: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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