Product: Weekly Highlights and Forecasts
:Issued: 2026 Aug 10 0153 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 03 - 09 August 2026
Solar activity was at very low to low levels throughout the period,
with no R1 (Minor) or greater events observed. Other activity three
CMEs associated with DSFs on 03 Aug, which arrived on 07 Aug, as
well as two CMEs without clear source locations on 04 Aug, which
arrived at Earth on 08 Aug.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at
normal to moderate levels throughout the period.
Geomagnetic field activity reached G1-G2 (Minor-Moderate) storm
levels on 08 Aug following the arrival of CMEs that left the Sun on
04 Aug. Active conditions were observed on 03-04 Aug following the
arrival of a CME that left the Sun on 30 Jul. Quiet and quiet to
unsettled levels prevailed throughout the remainder of the period.
Forecast of Solar and Geomagnetic Activity 10 August - 05 September 2026
Solar activity is expected to range from very low to 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 reach high levels on 12-16 and 22-23 Aug. Normal to
moderate levels are expected to prevail throughout the remainder of
the period.
Geomagnetic field activity is likely to reach G1 (Minor) storm
levels on 11 Aug due to the anticipated arrival of a CME that left
the Sun on 08 Aug, and again on 19 Aug due to recurrent CH HSS
influences. Active conditions are likely on 10 and 17-18 Aug, while
quiet and quiet to unsettled conditions are likely to prevail
throughout the remainder of the outlook period.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2026 Aug 10 0153 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 2026-08-10
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2026 Aug 10 90 12 4
2026 Aug 11 90 20 5
2026 Aug 12 92 10 3
2026 Aug 13 92 5 2
2026 Aug 14 95 5 2
2026 Aug 15 95 5 2
2026 Aug 16 95 5 2
2026 Aug 17 100 15 4
2026 Aug 18 105 12 4
2026 Aug 19 105 20 5
2026 Aug 20 105 8 3
2026 Aug 21 110 5 2
2026 Aug 22 115 5 2
2026 Aug 23 115 5 2
2026 Aug 24 115 5 2
2026 Aug 25 115 5 2
2026 Aug 26 110 5 2
2026 Aug 27 105 5 2
2026 Aug 28 105 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 02 100 5 2
2026 Sep 03 100 5 2
2026 Sep 04 95 8 3
2026 Sep 05 95 8 3
(NOAA)