:Product: Solar Region Summary
:Issued: 2026 May 21 0030 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Weather Prediction Center and the U.S. Air Force.
#
Joint USAF/NOAA Solar Region Summary
SRS Number 141 Issued at 0030Z on 21 May 2026
Report compiled from data received at SWO on 20 May
I. Regions with Sunspots. Locations Valid at 20/2400Z
Nmbr Location Lo Area Z LL NN Mag Type
4436 N18W78 331 0100 Csi 04 07 Beta
4439 N06E15 238 0020 Hrx 07 05 Alpha
4441 N07W30 283 0120 Eai 11 14 Beta
4443 S16E23 230 0010 Axx 01 01 Alpha
IA. H-alpha Plages without Spots. Locations Valid at 20/2400Z May
Nmbr Location Lo
4440 N17E15 238
4442 S15W00 253
II. Regions Due to Return 21 May to 23 May
Nmbr Lat Lo
None
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