Monday, August 24, 2026

Weekly Propagation Forecast Bulletins, August 24, 2026

 Product: Weekly Highlights and Forecasts
:Issued: 2026 Aug 24 0259 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact www.swpc.noaa.gov/content/subscription-services
#
#                Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity 17 - 23 August 2026



Solar activity reached moderate levels on 19, 20 and 21 Aug and was
at low levels on 17, 18, 22, and 23 Aug. Region 4513 (N04, L=50,
class/area Ekc/260 on 22 Aug) was the main contributor of M-class
flares, producing four out of the five M-flares observed. The
largest, an M8.1/Sf flare that peaked at 20/1142 UTC, had an
associated Type II radio sweep (estimated speed of 1201 km/s) and a
non-Earth-directed CME. Region 4513 also produced an M1.0 flare at
19/1824 UTC, an M1.8/Sf flare at 20/0805 UTC, and an M2.9/Sf flare
at 20/1611 UTC, as well as multiple C-class flares. Region 4507
(N04, L=197, class/area Ehi/300 on 18 Aug) added an M1.6 flare at
21/1017 UTC and multiple C-class flares as well.<o:p></o:p></span> 

Although proton levels never reached the S1 (Minor) storm threshold,
the greater than 10 MeV flux levels at geosynchronous orbit were
slightly enhanced between 3-6 pfu on 17-23 Aug. This enhancement was
likely associated with an energetic event from at or just beyond the
western limb on 21 Aug.<o:p></o:p></span> 

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal to moderate levels on 17-20 and 23 Aug, and reached high
levels on 21-22 Aug. <o:p></o:p></span> 

Geomagnetic field activity was at quiet to active levels on 17 Aug,
reached G1 (Minor) storm levels on 18-19 Aug, quiet to unsettled on
20-21 Aug, and returned to quiet levels on 22-23 Aug. The elevated
conditions on 17-19 Aug were attributed to the flanking influence
from a CME that left the Sun on 14 Aug, combined with the onset of a
CIR ahead of a negative polarity CH HSS. The slightly elevated
activity continued on 20-21 Aug as influence from the negative
polarity CH HSS persisted, and then decreased by 22-23
Aug.<o:p></o:p></span> 

Forecast of Solar and Geomagnetic Activity 24 August - 19 September 2026

Solar activity is expected to be at low levels, with a chance for
M-class flares (R1/R2-Minor/Moderate) and a slight chance for
X-class (R3-Strong) flares on 24 Aug - 03 Sep, mainly attributed to
the flare activity and magnetic complexity of Region 4513. Activity
is then likely to decrease to just a slight chance for M-class
flares (R1/R2-Minor/Moderate) from 04 Sep - 19 Sep. 

There is a slight chance for a greater than 10 MeV proton event on
24 Aug - 03 Sep, mainly attributed to the magnetic complexity of
Region 4513. No proton events are expected from 04 Sep - 19 Sep. 

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at high levels on 24-27 and 30 Aug, and then again on
16-18 Sep. Normal to moderate levels are expected on 28-29 and 31
Aug, and then from 31 Aug- 15 Sep and 19 Sep, 

Geomagnetic field activity is expected to be quiet to unsettled
throughout the entire period, with a chance for active conditions on 28
Aug, and 13-14 Sep, all attributed to coronal hole high-speed stream
influence. 

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2026 Aug 24 0259 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact www.swpc.noaa.gov/content/subscription-services
#
#      27-day Space Weather Outlook Table
#                Issued 2026-08-24
#
#   UTC      Radio Flux   Planetary   Largest
#  Date       10.7 cm      A Index    Kp Index
2026 Aug 24     125           5          2
2026 Aug 25     120           5          2
2026 Aug 26     120           5          2
2026 Aug 27     120           5          2
2026 Aug 28     120          10          3
2026 Aug 29     120           8          3
2026 Aug 30     120           5          2
2026 Aug 31     120           5          2
2026 Sep 01    1151           5          2
2026 Sep 02     100           5          2
2026 Sep 03      95           5          2
2026 Sep 04      95           8          3
2026 Sep 05      90           8          3
2026 Sep 06      90           5          2
2026 Sep 07      95           5          2
2026 Sep 08      95           5          2
2026 Sep 09     100           5          2
2026 Sep 10     105           5          2
2026 Sep 11     105           5          2
2026 Sep 12     105           8          3
2026 Sep 13     105          15          3
2026 Sep 14     105          12          3
2026 Sep 15     110           8          3
2026 Sep 16     115           8          3
2026 Sep 17     115           5          2
2026 Sep 18     115           5          2
2026 Sep 19     115           5          2
(NOAA)

Sunday, August 23, 2026

NASB announces pending FEBC closure

 

FEBC SW Philippines to close

I just wanted to let you know that FEBC Philippines is planning to close our facilities in Bocaue and Iba in March 2027. As a result, the following transmitters and related equipment will be for sale at that time:

Continental Model 418F - 2 units (new in 2001)

 Continental Model 418F - 2 units updated from 418D (from FEBC Saipan)

Continental Model 418F - 1 unit  updated from 418D or E1 (Updated Iba unit)

Continental Model 418D one unit (original edition Iba unit)

 The 418F model is supposed to be able to be updated to DRM-capable use by updating the digital modulator cabinet.  Back in the day (2005-ish), that was expected to be about a $50,000 job.  Of course, that price may be different now.

By the way, these transmitters have been well maintained and are in great condition. I can send photos to anyone who is interested.

Also for sale are spare parts and all the accessories, modulation monitors, audio processors, etc.  Please let your member stations know about this sale, and feel free to pass along my contact information to anyone who might be interested.

David Creel, CPBE

Broadcast Engineer

Far East Broadcasting Company/Voice of Love Cambodia

Email:  dcreel@febcintl.org

8D Street 355

Toul Sangke, Russey Keo

Phnom Penh, Cambodia 120706

Telephone: +855-087-693-522 

(NASB/Facebook)

Audio now available for Jen's Eclectic Views & Real Deal, AUgust 23, 2026

 


Friday, August 21, 2026

KNLS-Anchor Point, Alaska

 
Classic KNLS QSL

Jeff: One North American shortwave broadcasting station that I don’t think we’ve ever covered in Wavescan is World Christian Broadcasting’s KNLS at Homer, Alaska, just outside the town of Anchor Point.  World Christian Broadcasting is an active member of the National Association of Shortwave Broadcasters (NASB), and operates two shortwave stations – KNLS, the ‘New Life Station’ in Alaska, and Madagascar World Voice, MWV, in Madagascar.  This year, World Christian Broadcasting is celebrating 50 years since it was originally incorporated in 1976, so here’s Ray Robinson to tell us something about those early years.

Summertime at KNLS

Ray:Thanks, Jeff.  In the early 1970’s during the depths of the Cold War, a small group of American Christians began to dream of using shortwave radio to share the peace of God with a troubled world.  Other Christian organizations were already doing that, of course, such as HCJB from Ecuador and Trans World Radio from Monte Carlo and Bonaire, but these folks felt there were gaps that needed to be filled, particularly in the closed communist countries of Asia, and they started to form their own vision for how those people groups could best be reached.


That vision began to take shape in July 1976 when World Christian Broadcasting was formed.  Although it is a legally independent organization, it is closely associated with the Church of Christ denomination, and the Articles of Incorporation were signed on July 30, 1976.  They particularly wanted to reach people in the Siberian region of Russia, in China, and in North Korea – areas where the Bible was not welcome and where traditional missionaries could not go.  For this purpose, they figured a transmission site in southern Alaska would be optimal, and set about finding a suitable location.

However, things don’t always go smoothly in the Arctic, and just eight months after World Christian was formed, two founding members of the Board of Directors perished in a plane crash while surveying potential sites.  They were Dr. Lowell Perry, of Abilene, Texas, and Ken Ferguson, a Californian businessman, and their deaths came as a terrible shock to the fledgling organization.

By December 1979, though, 7½ acres of land had been secured about 100 miles south of Anchorage on the Kenai Peninsula, just outside the small town of Anchor Point.

A mile of road had to be cut through the rugged Alaskan landscape just to reach the construction site.  Wells were dug, rustic housing was built for the operators and engineers, and two antenna masts were erected.

Then, when the transmitter hall was nearly completed, tragedy struck once again.  Kevin Chamber, who had been appointed as the station manager, arrived one cold morning to see smoke coming out of both ends of the building.  The fire had been set deliberately by locals in an act of arson, apparently to force the station to go elsewhere.  Half the transmitter building was destroyed by the fire.

But fortunately, the transmitter and other major electronic components had not yet been installed, and insurance did cover most of the loss.  Chambers and his crew went to work, reconstructing the building before the winter came, and the transmitter, a Harris SW100A 100 kW unit, was successfully installed without further drama.

A giant curtain antenna was then installed, measuring about 400 feet square, suspended between the two masts.  The curtain actually consisted of sixteen separate dipole antennas, strung together in a wire mesh.  A second wire screen hanging just behind the antenna acted as a reflector to push the radio frequency radiation more efficiently towards the desired target areas.  Using huge switches at the base of the curtain, operators could electrically slew the beam of the antenna towards different parts of Asia or the Pacific Basin.

A special counterweight system was designed and installed to allow the antenna to survive Alaska’s bitter winds, ice and snow.  If high winds or heavy icing put an abnormally high load on the wires between the masts that support the antenna, the concrete counterweights, which are as large as a small car, would actually be lifted off the ground by as much as six inches, allowing the antenna to sag.  It was a protective measure to prevent the masts from being damaged by the elements.  World Christian Broadcasting obtained the FCC callsign KNLS, which stands for King’s New Life Station, and it finally went on air for the first time on July 23, 1983.

Tune in to the Audio Clip – KNLS Alaska Calling at: 

Initially, KNLS broadcast for four hours per day in Chinese, six hours per day in Russian, and an hour and a half in Ukrainian, all on frequencies in the 49-meter band.  The opening broadcast was especially memorable for those involved, because it represented the sacrifice of thousands of individuals who had donated their time, energy and financial support to bring the dream to fruition.  Dozens of people had battled Alaska’s unforgiving climate and difficult terrain to build KNLS, and founding board members Perry and Ferguson had given their very lives.

In 1989, an operations center was constructed in Franklin, Tennessee, just south of Nashville.  The administrative staff and all international programming and production staff are located there.  Unlike other missionary radio stations, World Christian Broadcasting does not sell airtime to other Christian ministries, but produces 100% of the content they broadcast themselves.  Financially, they are supported primarily by donations from individuals and local Church of Christ congregations across North America.  Their programs are produced in a magazine-style format, with current affairs, commentary on the news from a Christian perspective, entertainment and business news, music, sports, interviews, health tips, and the latest developments in medicine, science and technology, as well as the Christian message and lessons from the Bible.

In 2003, a third antenna mast was erected at KNLS allowing a second curtain antenna to be installed similar to the first.  A second 100 kW transmitter was also added, a Continental 418F.  Then in 2014, the original Harris transmitter was removed and shipped to station WTWW in Lebanon, Tennessee, to be replaced in 2015 by a second Continental 100 kW unit, model 418G.

Because it is illegal even to own a Bible in 13 countries, and illegal to evangelize or proselytize in another 15 countries, World Christian Broadcasting sees it as their purpose to reach people by broadcast media, primarily shortwave, in those countries where it is not safe for traditional missionaries to go.  To this end, a second station was built in Madagascar in the early 20teens, mainly to target Asian and African countries that are hostile to Christianity.  That station went on the air on Easter Sunday, 2016 with two more 100 kW Continental 418G transmitters, and it too has also been celebrating because this year’s its 10th birthday

So, today in 2026, KNLS and Madagascar World Voice are each still operating with two 100 kW Continental transmitters.  KNLS currently broadcasts:
in Chinese for eight hours per day, 
in Russian for five hours per day,
in Korean for two hours per day, and
in English for four hours per day,
using frequencies in the 49, 41 and 31 meter bands.    The programming produced in Franklin in English, Chinese and Russian is used on both stations.  A full A26 schedule for both stations can be found online at worldchristian.org/how-to-listen.  KNLS doesn’t have a live stream as such, but some of the languages have mobile apps, and each day’s English program is available online at knls.org/home.

Additional audio clip of KNLS English intro at: 
https://www.podomatic.com/podcasts/wavescan/episodes/2026-08-15T17_00_00-07_00

Back to you, Jeff ...





U.K. Propagation Update

 
RSGB
RadCom Assistant Editor | August 21, 2026
Compiled by G0KYA, G3YLA and G4BAO on 20 August, 2026
Last week was characterised by geomagnetic disturbances, due to high-speed solar wind streams from coronal holes and a slightly increasing solar flux index.
The Kp index hit 5 on 18-19 August, reducing maximum useable frequencies, or MUFs, and generally being detrimental to HF propagation.
We also had more than 50 C-class solar flares and one M-class event this past week, so nothing too severe. It was coronal holes that did the damage with two large areas on the Sun. A coronal hole is an area of the Sun with open magnetic field lines that allows solar plasma to escape.
HF conditions were relatively poor during International Lighthouse and Lightship Weekend on Sunday, 16 August, with little DX and heavy QSB or fading. The MUF struggled to get to 21MHz, and most activity was on the 40 and 20m bands.
Some transatlantic signals were logged but they were weak and watery. That didn’t stop people from enjoying the event, though!
DX to be worked this week includes 3B8/SQ9UM from Mauritius; RI8KR from Asiatic Russia; RI1FJL operating from Franz Josef Land; V47JA on St Kitts; and V51WH and V55Y active in Namibia.
Good news this week as Propquest is back online, showing near real-time MUFs over various distances. Jim, G3YLA says this is a temporary fix pending further work.
NOAA predicts that we will see a solar flux index around 100 to 120 next week, with relatively poor geomagnetic conditions forecast for today, 23 August. The Kp index is predicted to be around 2 during the coming week.
At the time of writing, there are no coronal holes threatening HF propagation but keep an eye on solarham.com for updates.
We are still analysing the eclipse experiment data, but a video of the 80m WSPR contacts has been produced and can be found at tinyurl.com/80mWSPR
 
VHF and up propagation news:
Compiled by G3YLA and G4BAO
The return of unsettled weather last week pauses over this weekend, ending today, 23 August as a new high moves across the country from the Atlantic.
This gives a good chance for some tropo and, if the land temperatures pick up again and drift offshore, it could produce some good conditions across sea paths like the North and Irish Seas.
Before midweek, probably during Tuesday, low pressure will return and push a frontal system across the country followed by further fronts and showery periods for the rest of the week.
This could be very good for rain scatter on the GHz bands, especially if the showers turn thundery.
Meteor scatter will be largely random activity for most of the coming week. We will also see the end of the Delta Aquarids today, 23 August and the final trailing off from the Perseids, which end tomorrow, 24 August.
The solar conditions are worth monitoring after recent activity saw the Kp index reach 5 on Tuesday and Wednesday last week. Ideally, we require something a little higher to start considering auroral propagation from the southern UK.
Sporadic-E can last into the first week of September but tends to become harder to find and shorter in duration. There is no reason to stop checking, though – anytime from mid-morning to late afternoon should cover it.
For EME operators, the Moon was at apogee and at minimum declination yesterday, 22 August. With minimum peak elevation and maximum path losses, it’s a good excuse to check out the mechanics of your antenna.
144MHz sky noise is very high today, 23 August, falling back to low as the week progresses.
(Mike Terry, UK/BDXC)

Thursday, August 20, 2026

Encore classical music from Radio Tumbrill

 


Regular Broadcast times of Encore By WRMI and Channel 292 are:
02:00 - 03:00 UTC Friday 5850 kHz WRMI to US
20:00 - 21:00 UTC Friday 15770 kHz WRMI to Europe
10:00 - 11:00 UTC Saturday 9670 kHz Channel 292 to Europe
01:00 - 02:00 UTC Sunday 5850 kHz WRMI to US and Canada
19:00 - 20:00 UTC Sunday 3955 kHz Channel 292 to Europe
02:00 - 03:00 UTC Monday 5950 kHz WRMI to the US and Canada
13:00 - 14:00 UTC Tuesday 15770 kHz WRMI to Europe, east coast of US and Iceland. (Sometimes RTTY on the lower sideband. Suggest notch out or use USB.)
 
Some Things to see on The Encore Website:
The Encore website is www.tumbril.co.uk where you will find:
Important information about funding of Encore - Radio Tumbril.
Up-to-date transmission times and frequencies.
The playlists for the most recent programmes.
An email link.
Informal reception reports as well as those requesting eQSL cards are welcome.
 
PLEASE MAKE A PAYPAL DONATION AND HELP KEEP ENCORE ON THE AIR - Go to - www.tumbril.co.uk
 
WRMI and Channel 292 are very generous with their air-time, but Encore still costs around 130 Dollars/Euros a month to broadcast.
If you can, please send a small contribution to help Encore keep going.
 
THE DONATION BUTTON is on the homepage of the website - www.tumbril.co.uk - which folks can use if they would like to support Encore.
 
(Please don't be put off by the POWR security wall when using the PAYPAL button - it is a harmless requirement of WIX the website hosting service.)
 
THIS FORTNIGHT'S PROGRAMME - First broadcast on FRIDAY 21st August by WRMI at 0200 UTC on 5850, and 2000 UTC on 15770 and then Channel 292 on SATURDAY 22nd August at 10:00 UTC on 9670 kHz:
Starts with a suite for viol consort and lute by William Lawes, a song from Franz Schubert, and the prelude from Lohengrin, Act 1, by Wagner.
After that the Shepherd's Song by Han Kun Sha, and some trumpet and organ from J S Bach.
To finish - the 2nd movement of Ravel's Piano Concerto arranged for piano and cor anglais.
 
Brice Avery - Encore - Radio Tumbril - www.tumbril.co.uk.
GMØTLY

Radio Prague International Celebrates 90 Years

 
QSL card from 2022

Radio Prague International will celebrate its 90th anniversary on August 31, marking nine decades of international broadcasting. As part of the celebration, the station plans to air a special program featuring comments and greetings from listeners around the world. Radio Prague International is part of Czech Radio, which celebrated its own 100th anniversary in 2023.

To commemorate the occasion, the station has released a new series of 10 special QSL cards, honoring its 90-year history. A look at the anniversary cards is available here:
https://english.radio.cz/radio-pragues-qsl-cards-8701722

Listeners can also enjoy an eight-part audio series exploring the history of Radio Prague and its role through the years in both Czechoslovakia and the Czech Republic. The series is available online and through most podcast platforms:
https://english.radio.cz/prague-calling-world-8890780

Over the years, Radio Prague's QSL cards have featured everything from transmitters and broadcasting equipment to scenic views of Czech cities and countryside, as well as notable Czech personalities. The station's 40th anniversary QSL card, issued in 1976, remains a favorite among many collectors.

While Radio Prague International no longer operates its own shortwave transmitters, listeners can still hear its broadcasts on shortwave via WRMI, as well as through the World Radio Network and online streaming services.

Throwback Thursday - Early Shortwave Broadcasting in Asia

 


This week's edition of Throwback Thursday originally aired on March 18, 2001

This year is an important year for Adventist World Radio. It is the 30th anniversary of our first broadcast from a 250 kw. Marconi shortwave transmitter located at Radio Trans Europe near Sines in Portugal. In this edition of Wavescan, we continue with another episode in the very interesting story of shortwave broadcasting by the Seventh-day Adventist denomination; and on this occasion, we are in Asia.

The very first Adventist broadcast on shortwave in Asia took place in October 1937 with a series of programs in the 49 metre band over station VU7MC in Mysore, India. These broadcasts were a short series of lectures on the care of poultry, presented by an American professor at the Adventist college in Bangalore.

Radio station VU7MC began as a 30-watt unit in the home of a university professor, though later a 250 kw transmitter was imported. The broadcasting station VU7MC began as an amateur operation, and it was on the air for a period of eight years before it was taken over by the state government of Mysore. The princely state of Mysore was later absorbed into the Union state of Karnataka, and the station VU7MC was ultimately replaced by local mediumwave stations as part of the network of All India Radio.

In April 1950, the shortwave station in the Portuguese colony of Goa began to carry the syndicated American program, "Voice of Prophecy." Broadcasts of this program ended on the last Sunday in December, though the station carried other Adventist programming for another couple of years. Radio Goa at the time was on the air with just the one transmitter, a 1 kw. unit on 9610 kHz under the colonial Portuguese callsign CR8A. This station left the air when Goa was absorbed into India as a Union territory.

Eight years later, two other stations in Southern Asia inserted Adventist programming into their shortwave schedules. One was the Burma Broadcasting Service in Rangoon, 50 kw. in the 25-metre band, with the American "Voice of Prophecy." Burma is today Myanmar, Rangoon is Yangon, and the shortwave service has been increased with the installation of several additional transmitters at 50 kw.

The other station in 1958 was Radio Nepal in Kathmandu, 5 kw. in the 41-metre band, with a new health program, "Your Radio Doctor." The transmitter base at Jawalarkel contained two Australian-made shortwave transmitters at 5 kw., though this facility was subsequently closed when a larger facility was constructed out beyond the edge of the capital city. For a short period of time each year, Jawarlekhel was re-activated to keep it air-worthy for use in an emergency.

Adventist radio programming on the Voice of the Maldives was introduced in 1967, when this station was on the air with a series of locally-made low-powered shortwave transmitters. One of these units carried an External Service for coverage into India and Sri Lanka, though it was always hard to hear. The shortwave transmitter on 4740 kHz was listed with 30 kw., though in reality it was operating at just 7.5 kW.

Beginning in 1969, Radio Afghanistan carried a local translation of the health program, "Your Radio Doctor," in the two national languages, Dari and Pushto. These broadcasts were part of the programming from Radio Afghanistan, which was on the air with two channels in the tropical shortwave bands, usually at 50 kW. and 100 kW. The main base at Jakatut was destroyed later in revolutionary fighting.

Radio Bangladesh also carried a locally produced program in the Garo language in 1979, and this was also heard on tropical shortwave. These programs were on the air at the time from two locations, both quite low-powered. The older transmitter was located in suburban Dacca, and the other was on the outer edge of Dacca.

Then finally the comparatively new station NYAB in Thimpu, Bhutan broadcast with low power on shortwave the translation of "Your Radio Doctor" in two local languages. In those days the radio station in Bhutan was operated as a volunteer service by the National Youth Association of Bhutan. These days, Bhutan is on the air with several transmitters, FM and shortwave, from a new building in the same locality.

Adventist Broadcasts on Shortwave - Southern Asia

1937 (Oct), VU7MC, Mysore, India (college program)

1950 (Apr 30), CR8A, Goa (American VOP)

1953, BBS, Rangoon, Burma (American VOP, one year)

1958, R. Nepal, Kathmandu, Nepal (Your Radio Doctor)

1967, MIBS, Male, Maldives

1969, R. Afghanistan, Kabul, Afghanistan (YRD in Dari and Pashtu)

1979, R. Bangladesh, Dhaka, Bangladesh (Bengali)

1983, NYAB, Thimpu, Bhutan (YRD 2 languages)
(Wavescan 325)

Wednesday, August 19, 2026

Texas Radio Shortwave, August 20


 

August 20, 2026
1900  3975 + 6160  Shortwave Radio Gold  Eur  The Music of Boz Scaggs    

Unless otherwise shown, programs are one hour long.
Programs for Europe (Eur) and beyond on 3975 and 6160 kHz over Shortwave Radio Gold in Winsen, Germany, are transmitted with 1 kW into crossed dipole antennas.
Programs for Europe (Eur) and beyond on 6070 and 9670 kHz over Channel 292 in Rohrbach, Germany, are transmitted with 10 kW into an inverted V antenna.
Programs for North America (NAm) and beyond on 9670 kHz over Channel 292 are transmitted with 10 kW into a 10.5 dB gain beam antenna.
Texas Radio Shortwave uses a version of The Yellow Rose of Texas as its Interval Signal/Signature Song.

Texas Radio Shortwave verifies correct, detailed reception reports by electronic QSL. This includes reports from listeners using remote receivers (SDRs). Texas Radio
Many TRSW programs are archived at www.mixcloud.com/texasradiosw.
Texas Radio Shortwave's Facebook page is www.facebook.com/texasradiosw.
Texas Radio Shortwave's Listeners' Group Facebook page is www.facebook.com/groups/580199276066655/.
texasradioshortwave@protonmail.com
(TRSW)      

Sunday, August 16, 2026

Weekly Propagation Forecast Bulletins, August 17, 2026

 Product: Weekly Highlights and Forecasts
:Issued: 2026 Aug 17 0058 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact www.swpc.noaa.gov/content/subscription-services
#
#                Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity 10 - 16 August 2026



Solar activity ranged from very low to low levels throughout the
period. No R1 (Minor) or greater events were observed. The largest
flare was a C8.2/Sn at 16/1928 UTC from Region 4506 (N12, L=215,
class/area=Dao/100 on 16 Aug). An associated CME was observed in
LASCO C2 imagery following the C8.2 flare, but analysis is ongoing
in order to determine any Earth-directed component. Other activity
included the lift-off of a large filament near S16E22 at 14/0332 UTC
which produced a CME that is expected to arrive on 17-18 Aug. 

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was
normal to moderate levels throughout the period. 

Geomagnetic field activity was at quiet or quiet to unsettled levels
throughout the period. 

Forecast of Solar and Geomagnetic Activity 17 August - 12 September 2026

Solar activity is expected to range from very low to low levels
throughout the outlook period, with a slight chance for an R1-R2
(Minor-Moderate) event. 

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to reach high levels on 19-20, 23-24, and 28 Aug. Normal to
moderate levels are expected to prevail throughout the remainder of
the outlook period. 

Geomagnetic field activity is expected to reach active levels on
17-18 Aug due to the anticipated arrival of a CME that left the Sun
on 14 Aug. Active conditions are expected again on 21-22 Aug and 04
Sep due to the influences of a CH HSS. Quiet and quiet to unsettled
conditions are expected to prevail throughout the remainder of the
outlook period. 

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2026 Aug 17 0058 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact: www.swpc.noaa.gov/content/subscription-services
#
#      27-day Space Weather Outlook Table
#                Issued 2026-08-17
#
#   UTC      Radio Flux   Planetary   Largest
#  Date       10.7 cm      A Index    Kp Index
2026 Aug 17     130          15          4
2026 Aug 18     125          12          4
2026 Aug 19     130           5          2
2026 Aug 20     130           5          2
2026 Aug 21     125          12          4
2026 Aug 22     125          12          4
2026 Aug 23     120          10          3
2026 Aug 24     115           8          3
2026 Aug 25     115           5          2
2026 Aug 26     110           5          2
2026 Aug 27     110           5          2
2026 Aug 28     110           5          2
2026 Aug 29     110           5          2
2026 Aug 30     110           5          2
2026 Aug 31     105           5          2
2026 Sep 01     105           5          2
2026 Sep 02     105           5          2
2026 Sep 03     100           5          2
2026 Sep 04      95          15          3
2026 Sep 05      95           8          3
2026 Sep 06      90           5          2
2026 Sep 07      90           5          2
2026 Sep 08      95           5          2
2026 Sep 09      95           5          2
2026 Sep 10     100           5          2
2026 Sep 11     100           5          2
2026 Sep 12     105           5          2

(NOAA)