Monday, January 23, 2023

Weekly Propagation Forecast Bulletins

 


Product: Weekly Highlights and Forecasts
:Issued: 2023 Jan 23 0145 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 16 - 22 January 2023

Solar activity was high. Region 3190 (S15, L=119, class/area, Eki/950 on 18 Jan) produced dual M1.8 flares at 17/2329 UTC and 18/1035 UTC. These flares tied for the largest of the period. Region 3190 also produced an M1.1 flare at 22/1226 UTC. Region 3196 (N12, L=084, class/area, Dro/30 on 18 Jan) provided an M1.1/Sf flare at 19/0403 UTC; an M1.7 flare at 19/1012 UTC; and an M1.0/Sf flare at 19/1027 UTC. The only other M-class producing region was Region 3194 (S24, L=132, class/area, Dai/130 on 22 Jan) with an M1.6/1b flare at 22/1702 UTC. There was a combined total of seven M-class flares during the period, all at the R1 (Minor) level, and none with significant radio signatures. 

No reportable proton events were observed at geosynchronous orbit, however, 10 MeV proton flux became enhanced, reaching a peak flux of 1.01 pfu at 20/1425 UTC. The source of this slight flux increase was believed to be a C-class event from Region 3190. 

The greater than 2 MeV electron flux at geosynchronous orbit reached moderate levels throughout the reporting period. 

Geomagnetic field activity ranged between quiet and active levels. Active conditions were observed on 16-18 Jan, in response to the combined influence of the 11 Jan CME and a recurrent, positive-polarity CH HSS. Active conditions were also observed on 21 Jan in response to an additional positive-polarity CH HSS. Quiet to unsettled conditions were observed during the remainder of the period. 

Forecast of Solar and Geomagnetic Activity 23 January - 18 February 2023

Solar activity is likely to remain at moderate to high levels throughout the outlook period due to numerous, existing and returning M and X-class flare-producing regions. 

There is a slight chance for proton events at geosynchronous orbit, during the outlook period, due to the magnetic complexity and flare history of the abundant sunspot groups. 

The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at high levels on 24-30 Jan in response to recurrent CH HSS influence. The remainder of the outlook period is expected to be at moderate levels. 

Geomagnetic field activity is expected to range from quiet to active levels. Active conditions are likely on 23-25 Jan and 01, 07-10 Feb; unsettled levels are likely on 26-29 Jan, and 02, 12-13, 18 Feb. Increased geomagnetic activity is in response to multiple, recurrent CH HSSs. The remainder of the outlook period is expected to be mostly quiet. 

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2023 Jan 23 0145 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 2023-01-23
#
#   UTC      Radio Flux   Planetary   Largest
#  Date       10.7 cm      A Index    Kp Index
2023 Jan 23     195          10          4
2023 Jan 24     200          12          4
2023 Jan 25     190          15          4
2023 Jan 26     185          10          3
2023 Jan 27     185           8          3
2023 Jan 28     180           8          3
2023 Jan 29     180           8          3
2023 Jan 30     175           5          2
2023 Jan 31     175           5          2
2023 Feb 01     175          12          4
2023 Feb 02     175           8          3
2023 Feb 03     180           5          2
2023 Feb 04     185           5          2
2023 Feb 05     190           5          2
2023 Feb 06     190           5          2
2023 Feb 07     195          12          4
2023 Feb 08     195          12          4
2023 Feb 09     195          15          4
2023 Feb 10     195          12          4
2023 Feb 11     195           5          2
2023 Feb 12     195           8          3
2023 Feb 13     200           8          3
2023 Feb 14     205           5          2
2023 Feb 15     205           5          2
2023 Feb 16     200           5          2
2023 Feb 17     200           5          2
2023 Feb 18     200           8          3
(NOAA)