Product: Weekly Highlights and Forecasts
:Issued: 2023 Aug 28 0230 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 21 - 27 August 2023
Solar activity ranged from low to moderate. Region 3415 (S09, L=79, class/area=Dko/350 on 24 Aug) produced the strongest flare of the period, a long-duration M1.4/1n at 25/0109 UTC. Lower M-class X-ray flares (R1 - Minor) were observed from Region 3405 (N10, L=183, class/area=Eso/180 on 16 Aug) and an area around the E limb. The remaining active regions were relatively simple.
Other activity included a Type II radio sweep on 26 Aug which was associated with activity just past the Sun's visible disk. None of the CMEs observed in available coronagraph imagery appeared to on the Sun-Earth line.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was low to moderate levels over the reporting period.
Geomagnetic field activity ranged from quiet to active conditions. A single period of active conditions were observed 27 Aug due to a period of sustained Bz south that reached -7 nT. Only quiet to unsettled conditions were observed for the remainder of the reporting period.
Forecast of Solar and Geomagnetic Activity 28 August - 23 September 2023
Solar activity is expected to be at low levels with a slight chance for M-class (R1-R2 Minor-Moderate) activity 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 07-10 Sep due to recurrent CH HSS influence. The remaining days are likely to be at background to moderate levels.
Geomagnetic field activity is expected to range from quiet to active levels. Active conditions are likely on 14 Sep, with unsettled conditions likely on 28-19 Aug, 06-08 Sep, 15-17 Sep and 23 Sep. All elevations in geomagnetic activity are anticipated due to recurrent CH HSS features. The remainder of the outlook period is expected to be at quiet levels.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2023 Aug 28 0230 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 2023-08-28
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2023 Aug 28 148 10 3
2023 Aug 29 150 8 3
2023 Aug 30 150 5 2
2023 Aug 31 152 5 2
2023 Sep 01 150 5 2
2023 Sep 02 145 5 2
2023 Sep 03 140 5 2
2023 Sep 04 145 5 2
2023 Sep 05 150 5 2
2023 Sep 06 150 10 3
2023 Sep 07 152 8 3
2023 Sep 08 156 8 3
2023 Sep 09 156 5 2
2023 Sep 10 150 5 2
2023 Sep 11 148 5 2
2023 Sep 12 148 5 2
2023 Sep 13 145 5 2
2023 Sep 14 145 12 4
2023 Sep 15 150 10 3
2023 Sep 16 155 10 3
2023 Sep 17 160 8 3
2023 Sep 18 168 5 2
2023 Sep 19 168 5 2
2023 Sep 20 168 5 2
2023 Sep 21 168 5 2
2023 Sep 22 165 5 2
2023 Sep 23 160 10 3
(NOAA)
