:Product: Solar Region Summary :Issued: 2026 Apr 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 110 Issued at 0030Z on 20 Apr 2026 Report compiled from data received at SWO on 19 Apr I. Regions with Sunspots. Locations Valid at 19/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4415 S18W74 017 0030 Hsx 02 01 Alpha 4419 N14W12 315 0240 Eao ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3679 Issue Time: 2026 Apr 19 1947 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2026 Apr 19 1920 UTC Station: GOES19 Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.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 ...Continue Reading

:Product: Solar Region Summary :Issued: 2026 Apr 19 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 109 Issued at 0030Z on 19 Apr 2026 Report compiled from data received at SWO on 18 Apr I. Regions with Sunspots. Locations Valid at 18/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4415 S18W61 017 0060 Hsx 02 01 Alpha 4416 N22W91 047 0090 Hax ...Continue Reading

: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 ...Continue Reading

Super Typhoon Sinlaku; Spring Rains Saturate Michigan   April 17, 2026 Natural Events   This Week's Natural Event Images View the natural events archive Spring Rains Saturate Michigan Above-normal precipitation has swollen rivers and damaged infrastructure statewide. Super Typhoon Sinlaku The violent storm aimed at the U.S. Northern Mariana Islands and Guam in mid-April 2026.     NASA Earth Observatory Where every da ...Continue Reading

Spring Rains Saturate Michigan   April 17, 2026 Natural Events   Latest Natural Event Images View the natural events archive Spring Rains Saturate Michigan Above-normal precipitation has swollen rivers and damaged infrastructure statewide.     NASA Earth Observatory Where every day is Earth day Visit science.nasa.gov/earth/earth-observatory Follow NASAEarth       NASA Earth Science ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3678 Issue Time: 2026 Apr 17 0731 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3677 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 2407 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading

:Product: Solar Region Summary :Issued: 2026 Apr 17 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 107 Issued at 0030Z on 17 Apr 2026 Report compiled from data received at SWO on 16 Apr I. Regions with Sunspots. Locations Valid at 16/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4415 S18W33 015 0060 Hsx 02 01 Alpha 4416 N20W64 046 0100 Dso ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3677 Issue Time: 2026 Apr 16 1323 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3676 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 3248 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading

:Product: Solar Region Summary :Issued: 2026 Apr 16 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 106 Issued at 0030Z on 16 Apr 2026 Report compiled from data received at SWO on 15 Apr I. Regions with Sunspots. Locations Valid at 15/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4415 S18W19 015 0090 Hsx 03 03 Alpha 4416 N20W50 046 0110 Dso ...Continue Reading