:Product: Solar Region Summary

:Issued: 2026 Apr 18 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 108 Issued at 0030Z on 18 Apr 2026
Report compiled from data received at SWO on 17 Apr

I.  Regions with Sunspots.  Locations Valid at 17/2400Z 

Nmbr Location  Lo  Area  Z   LL   NN Mag Type

4415 S18W46   015  0040 Hsx  02   01 Alpha

4416 N20W78   047  0090 Cso  03   03 Beta

4419 N14E15   314  0360 Eki  12   16 Beta-Gamma

IA. H-alpha Plages without Spots.  Locations Valid at 17/2400Z Apr

Nmbr  Location  Lo

4414  N15W59   028

4418  S11W49   018

II. Regions Due to Return 18 Apr to 20 Apr

Nmbr Lat    Lo

4403 N15    223

4404 N13    205

4406 N07    202

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