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Product: Weekly Highlights and Forecasts
:Issued: 2023 May 01 0202 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 24 - 30 April 2023
Solar activity was at low to moderate levels during the period. Low levels were observed throughout the period from Regions 3282 (N11, L=024, class/area Eki/530 on 16 Apr), 3283 (S20, L=356, class/area Bxo/050 on 20 Apr), 3285 (S19, L=273, class/area Cao/240 on 27 Apr), 3288 (S23, L=267, class/area Ehc/420 on 30 Apr), 3289 (N20, L=213, class/area Dai/220 on 30 Apr) and 3293 (N13, L=141, class/area Cao/030 on 30 Apr).
Activity reached moderate levels due to an M1.8/Sn flare at 27/1114 UTC from Region 3288. New Region 3293 produced an M2.4/1f flare at 30/2028 UTC.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached normal to moderate levels on 24-25 April and 30 April. High levels were observed on 26-29 April with a high flux reading of 12,967 pfu at 29/1645 UTC.
Geomagnetic field activity ranged from quiet to G4 (Severe) storm conditions during the period. The period began with G2 (Moderate), G3 (Strong), and G4 (Severe) storm conditions due to response from the full-halo CME that left the Sun on 21 Apr. These storm conditions were observed midday on 27 April as the CME effects were beginning to wane. The latter half of 27 April through 28 April observed quiet to active levels due to waning CME effects. During 26-30 April, quiet to active levels were observed due to negative polarity CH HSS influence.
Forecast of Solar and Geomagnetic Activity 01 May - 27 May 2023
Solar activity is expected to remain at low levels with a chance for M-class (R1-R2, Minor-Moderate) flares on 01-13 May and 17-27 May.
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 01-06 May, with normal to moderate levels on 07-27 May.
Geomagnetic field activity is expected to be at unsettled to active levels on 01-04, 06,07, 11-12 and 23-27 May, with G1 (Minor) storm conditions on 24 May, all due to CH HSS effects. Some weak CME effects are possible on 02-03 May. Mostly quiet levels are expected on 05, 08-10 and 13-22 May
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2023 May 01 0202 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 2023-05-01
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2023 May 01 155 12 4
2023 May 02 150 15 4
2023 May 03 145 12 4
2023 May 04 145 8 3
2023 May 05 135 5 2
2023 May 06 135 12 4
2023 May 07 135 10 3
2023 May 08 140 5 2
2023 May 09 140 5 2
2023 May 10 145 5 2
2023 May 11 150 8 3
2023 May 12 160 8 3
2023 May 13 160 5 2
2023 May 14 160 5 2
2023 May 15 160 5 2
2023 May 16 155 5 2
2023 May 17 150 5 2
2023 May 18 150 5 2
2023 May 19 150 5 2
2023 May 20 145 5 2
2023 May 21 145 5 2
2023 May 22 140 5 2
2023 May 23 140 12 4
2023 May 24 140 20 4
2023 May 25 140 15 4
2023 May 26 145 15 4
2023 May 27 145 8 3
(NOAA)