Space Weather Message Code: ALTEF3 Serial Number: 3691 Issue Time: 2026 May 21 0509 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3690 Begin Time: 2026-05-16 17:40 Yesterday Maximum 2MeV Flux: 1717 pfu Continued 2026-05-21 05:07 by Forecaster User Continued 2026-05-21 05:07 by Forecaster User Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your a ...Continue Reading

:Product: Solar Region Summary :Issued: 2026 May 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 138 Issued at 0030Z on 18 May 2026 Report compiled from data received at SWO on 17 May I. Regions with Sunspots. Locations Valid at 17/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4436 N19W39 332 0100 Dso 03 04 Beta 4438 N20W84 017 0060 Dao 0 ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3689 Issue Time: 2026 May 19 0514 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2026 May 16 1740 UTC Station: GOES-19 Comment: Yesterday's max: 6667 pfu Yesterday's max: 6667 pfu Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product Subscription Site. Please do not use the from address for co ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3692 Issue Time: 2026 May 22 0507 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3691 Begin Time: 2026-05-16 17:40 Yesterday Maximum 2MeV Flux: 2842 pfu Continued 2026-05-22 05:06 by Forecaster User Continued 2026-05-22 05:06 by Forecaster User Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your a ...Continue Reading

:Product: Solar Region Summary :Issued: 2026 May 22 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 142 Issued at 0030Z on 22 May 2026 Report compiled from data received at SWO on 21 May I. Regions with Sunspots. Locations Valid at 21/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4436 N18W90 330 0100 Csi 06 03 Beta 4439 N07W02 241 0030 Cao 0 ...Continue Reading

New Eruption in the Bismarck Sea   May 21, 2026 Natural Events   Latest Natural Event Images View the natural events archive New Eruption in the Bismarck Sea Satellite imagery shows a surge of new volcanic activity in the ocean near Papua New Guinea.     NASA Earth Observatory Where every day is Earth day Visit science.nasa.gov/earth/earth-observatory Follow NASAEarth       NASA Ea ...Continue Reading

: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 0 ...Continue Reading

Fire Chars Santa Rosa Island   May 20, 2026 Natural Events   Latest Natural Event Images View the natural events archive Fire Chars Santa Rosa Island The blaze spread across the southern side of the second-largest island in California’s Channel Islands National Park.     NASA Earth Observatory Where every day is Earth day Visit science.nasa.gov/earth/earth-observatory Follow NASAEarth       ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3690 Issue Time: 2026 May 20 1006 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3689 Begin Time: 2026-05-16 17:40 Yesterday Maximum 2MeV Flux: 2860 pfu Continued 2026-05-20 10:06 by Forecaster User Continued 2026-05-20 10:06 by Forecaster User Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your a ...Continue Reading

:Product: Solar Region Summary :Issued: 2026 May 20 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 140 Issued at 0030Z on 20 May 2026 Report compiled from data received at SWO on 19 May I. Regions with Sunspots. Locations Valid at 19/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4436 N18W64 330 0085 Cso 05 06 Beta 4439 N06E30 236 0050 Cao 0 ...Continue Reading