:Product: Solar Region Summary

:Issued: 2026 Apr 01 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 91 Issued at 0030Z on 01 Apr 2026
Report compiled from data received at SWO on 31 Mar

I.  Regions with Sunspots.  Locations Valid at 31/2400Z 

Nmbr Location  Lo  Area  Z   LL   NN Mag Type

4399 S16W52   245  0050 Hsx  02   01 Alpha

4401 N25W57   251  0110 Hax  04   05 Alpha

4402 N19W41   235  0025 Hrx  02   04 Alpha

4403 N15W12   206  0070 Hsx  04   02 Alpha

4404 N15E06   188  0050 Csi  03   03 Beta

4405 S27E18   175  0200 Esi  11   11 Beta-Gamma

4406 N08E12   182  0050 Hsx  02   01 Alpha

4407 N17E17   176  0010 Axx  01   01 Alpha

4408 N08E38   156  0040 Hsx  02   01 Alpha

4409 N02E39   154  0020 Dro  04   04 Beta

IA. H-alpha Plages without Spots.  Locations Valid at 31/2400Z Mar

Nmbr  Location  Lo

None

II. Regions Due to Return 01 Apr to 03 Apr

Nmbr Lat    Lo

4391 N07    085

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