Weekly Highlights and Forecasts
:Issued: 2025 Jul 21 0208 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 14 - 20 July 2025
Solar activity was at low levels. The largest flare was a C7.6 from Region 4136 (N20, L=17, class/area=Cao/210 on 20 Jul) at 20/0741 UTC. C-class activity was also observed from several other regiond during the highlight period. No Earth-directed CME activity was observed.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at high levels on 14-20 Jul in response to persistent positive polarity CH HSS influence.
Geomagnetic field activity reached G1 (Minor) storm levels on 14, 15, and 17 Jul due to positive polarity CH HSS influence. Solar wind speeds were elevated to as high as 700 km/s on 15 and 17 Jul. The remaining days were at quiet to active levels despite enhanced solar wind parameters.
Forecast of Solar and Geomagnetic Activity 21 July - 16 August 2025
Solar activity is expected to be at mostly low levels with a chance for M-class (R1-R2, Minor to Moderate) flares for the outlook period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at high levels on 21-22 Jul, 24-30 Jul, 5-6 Aug, and 10-16 Aug all due to recurrent CH HSS influences. Low to moderate levels are expected on the remaining days.
Geomagnetic field activity is expected to be at active to G1 (Minor) storm levels on 23 Jul, 1-4 Aug and, 7-14 Aug due to recurrent CH HSS effects. Quiet to unsettled levels are expected on the remaining days of the outlook peirod.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2025 Jul 21 0208 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 2025-07-21
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2025 Jul 21 145 5 2
2025 Jul 22 140 5 2
2025 Jul 23 140 15 4
2025 Jul 24 142 10 3
2025 Jul 25 138 5 2
2025 Jul 26 135 5 2
2025 Jul 27 135 5 2
2025 Jul 28 130 5 2
2025 Jul 29 130 5 2
2025 Jul 30 130 5 2
2025 Jul 31 130 5 2
2025 Aug 01 130 15 4
2025 Aug 02 130 20 5
2025 Aug 03 125 18 4
2025 Aug 04 128 12 4
2025 Aug 05 130 5 2
2025 Aug 06 132 5 2
2025 Aug 07 138 20 4
2025 Aug 08 140 15 4
2025 Aug 09 138 25 5
2025 Aug 10 135 18 4
2025 Aug 11 135 25 5
2025 Aug 12 130 18 4
2025 Aug 13 130 20 5
2025 Aug 14 130 12 4
2025 Aug 15 125 8 3
2025 Aug 16 130 5 2
(NOAA)
