:Product: Solar Region Summary

:Issued: 2026 May 31 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 151 Issued at 0030Z on 31 May 2026
Report compiled from data received at SWO on 30 May

I.  Regions with Sunspots.  Locations Valid at 30/2400Z 

Nmbr Location  Lo  Area  Z   LL   NN Mag Type

4444 S21W48   169  0070 Hsx  02   01 Alpha

4446 S15W21   142  0250 Cho  05   08 Beta

4447 S17W55   176  0080 Hsx  02   01 Alpha

4449 S09W16   137  0040 Cso  06   05 Beta

4452 N10W61   182  0070 Dai  07   09 Beta-Gamma

4454 S15E20   101  0010 Hrx  01   01 Alpha

4455 N15E38   083  0300 Dho  10   10 Beta

4456 N14E56   065  0010 Bxo  07   03 Beta

4457 S10W00   121  0020 Cro  08   05 Beta

IA. H-alpha Plages without Spots.  Locations Valid at 30/2400Z May

Nmbr  Location  Lo

4445  N07W43   164

4448  S05W12   133

4450  N10W20   141

4451  S17W01   122

II. Regions Due to Return 31 May to 02 Jun

Nmbr Lat    Lo

4438 N20    031

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