Weekly Propagation Forecast Bulletins

Product: Weekly Highlights and Forecasts
:Issued: 2019 Dec 02 0130 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 25 November - 01 December 2019

Solar activity was very low. No sunspots were observed on the visible disk. No Earth-directed CMEs were observed in available coronagraph imagery.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 25-28 Nov and decreased to moderate levels on 29 Nov - 01 Dec.

Geomagnetic field activity was mostly quiet. A single isolated period of unsettled was observed late on 29 Nov in response to a prolonged period of southward Bz.

Forecast of Solar and Geomagnetic Activity 02 December - 28 December 2019

Solar activity is expected to be at very low levels throughout the outlook period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to range from moderate to high levels. High levels are expected to be reached on 20-25 Dec in response to CH HSS influence; moderate levels are expected for the remainder of the outlook period. 

Geomagnetic field activity is expected to be at quiet to active levels. Active levels are expected on 18-19 Dec due to interaction with a positive polarity CH HSS; unsettled levels are expected on 03 Dec and 20-21 Dec; quiet levels are expected for the remainder of
the outlook period. 

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2019 Dec 02 0130 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
#
#      27-day Space Weather Outlook Table
#                Issued 2019-12-02
#
#   UTC      Radio Flux   Planetary   Largest
#  Date       10.7 cm      A Index    Kp Index
2019 Dec 02      70           5          2
2019 Dec 03      70           8          3
2019 Dec 04      70           8          3
2019 Dec 05      70           5          2
2019 Dec 06      70           5          2
2019 Dec 07      70           5          2
2019 Dec 08      70           5          2
2019 Dec 09      70           5          2
2019 Dec 10      70           5          2
2019 Dec 11      70           5          2
2019 Dec 12      70           5          2
2019 Dec 13      70           5          2
2019 Dec 14      70           5          2
2019 Dec 15      70           5          2
2019 Dec 16      70           5          2
2019 Dec 17      70           5          2
2019 Dec 18      70          12          4
2019 Dec 19      70          10          4
2019 Dec 20      70           8          3
2019 Dec 21      70           8          3
2019 Dec 22      70           5          2
2019 Dec 23      70           5          2
2019 Dec 24      70           5          2
2019 Dec 25      70           5          2
2019 Dec 26      70           5          2
2019 Dec 27      70           5          2
2019 Dec 28      70           5          2
(NOAA)

Weekly Radio Propagation Forecast Bulletins

Product: Weekly Highlights and Forecasts
:Issued: 2008 Jan 08 2024 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/weekly.html
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
31 December 2007 - 06 January 2008

Solar activity was very low to low. The period began at low levels due to a C8.3 flare observed at 31/0110 UTC off the east limb from Region 980 (S08, L=236, class/area, Cso/030 on 02 January). Accompanying this flare were Type II and Type IV radio sweeps (estimated shock velocity of 682 km/s). An associated CME was observed on the east limb near S09. At 02/1000 UTC, Region 980 produced a long duration C1.2 flare with an associated CME observed on LASCO C3 imagery at 02/1006 UTC. The region slowly decayed to spotless plage by 05 January. The first sunspot region with Solar Cycle 24 polarity was numbered as Region 981 (N30, L=246, class/area, Cso/020 on 04 January). Since emerging on the disk on 04 January, this region has been quiet and stable.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached high levels 31 December, 02 January, and 06 January.

The geomagnetic field was at quiet levels through 04 January. For the remainder of the summary period (05 - 06 January), quiet to active levels were observed at middle latitudes, while high latitudes experienced unsettled to minor storm levels with an isolated major storm period. ACE solar wind measurements indicated a recurrent co-rotating interaction region (CIR) late on 04 January followed by the onset of a recurrent high speed stream. The CIR was
associated with increased densities, velocities, and interplanetary magnetic field. Densities increased to a peak of 31 p/cc at 05/0610 UTC. CIR-associated IMF changes included increased Bt (peak 18 nT at 05/0645 UTC) and intermittent periods of increased southward Bz
(minimum -14 nT at 05/0712 UTC). Velocities increased during 05 - 06 January. and reached a peak of 705 km/sec at 06/0007 UTC.

Forecast of Solar and Geomagnetic Activity
09 January - 04 February 2008

Solar activity is expected to be very low.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach high levels during 09 - 11 January, 14 - 27 January, and 02 - 04 February.

The geomagnetic field is expected to be at quiet levels during 09 - 12 January. Activity is expected to increase to unsettled to active levels during 13 - 18 January due to a recurrent coronal hole high speed stream. Activity is expected to decrease to mostly quiet levels during 19 January - 01 February. Activity is expected to increase to unsettled to active levels during 02 - 04 February due to a recurrent coronal hole high-speed stream.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2008 Jan 08 2024 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html

# 27-day Space Weather Outlook Table
# Issued 2008 Jan 08
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2008 Jan 09 80 5 2
2008 Jan 10 75 5 2
2008 Jan 11 75 5 2
2008 Jan 12 70 5 2
2008 Jan 13 70 15 4
2008 Jan 14 70 15 4
2008 Jan 15 70 10 3
2008 Jan 16 70 10 3
2008 Jan 17 70 10 3
2008 Jan 18 70 10 3
2008 Jan 19 70 8 3
2008 Jan 20 70 5 2
2008 Jan 21 70 5 2
2008 Jan 22 70 5 2
2008 Jan 23 70 5 2
2008 Jan 24 70 5 2
2008 Jan 25 70 5 2
2008 Jan 26 75 5 2
2008 Jan 27 75 5 2
2008 Jan 28 80 5 2
2008 Jan 29 80 5 2
2008 Jan 30 80 5 2
2008 Jan 31 80 5 2
2008 Feb 01 80 5 2
2008 Feb 02 80 10 4
2008 Feb 03 80 10 3
2008 Feb 04 80 10 3
(NOAA)