:Product: Solar Region Summary

:Issued: 2026 May 28 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 148 Issued at 0030Z on 28 May 2026
Report compiled from data received at SWO on 27 May

I.  Regions with Sunspots.  Locations Valid at 27/2400Z 

Nmbr Location  Lo  Area  Z   LL   NN Mag Type

4443 S17W67   227  0020 Hsx  02   01 Alpha

4444 S21W09   169  0090 Hsx  02   01 Alpha

4445 N07W02   162  0005 Axx  01   01 Alpha

4446 S16E30   131  0400 Fko  24   17 Beta-Gamma

4447 S17W14   175  0145 Dsi  07   13 Beta

4448 S07E28   132  0070 Cao  08   06 Beta

4449 S10E23   138  0065 Hax  02   02 Alpha

4452 N09W21   181  0060 Cai  05   09 Beta

4453 N11W63   224  0010 Bxo  04   02 Beta

4454 S15E61   099  0010 Axx  01   01 Alpha

4455 N14E78   082  0450 Hax  05   02 Alpha

IA. H-alpha Plages without Spots.  Locations Valid at 27/2400Z May

Nmbr  Location  Lo

4439  N06W87   247

4440  N17W83   243

4450  N10E21   140

II. Regions Due to Return 28 May to 30 May

Nmbr Lat    Lo

4433 S17    068

4435 N22    053

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