:Product: Solar Region Summary :Issued: 2026 Jan 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 21 Issued at 0030Z on 21 Jan 2026 Report compiled from data received at SWO on 20 Jan I. Regions with Sunspots. Locations Valid at 20/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4341 S11W09 045 0300 Dko 07 13 Beta 4342 N14W04 040 0160 Dsi 07 ...Continue Reading

Discover the latest from NASA Earth Science   January 20, 2026 Weekly News   Latest Images of the Day View the Image of the Day archive North America’s Greenhouse Hub The expansion of greenhouses in southern Ontario is changing the appearance of the land surface—and the night sky. Read more How Long, Not Long After marching from Selma, Martin Luther King Jr. stood on the steps of the state capitol in Montgomery, Alabama, and called fo ...Continue Reading

:Product: Solar Region Summary :Issued: 2026 Jan 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 20 Issued at 0030Z on 20 Jan 2026 Report compiled from data received at SWO on 19 Jan I. Regions with Sunspots. Locations Valid at 19/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4341 S11E03 046 0290 Dkc 09 12 Beta-Gamma 4342 N14E10 039 0140 D ...Continue Reading

Space Weather Message Code: WATA99 Serial Number: 13 Issue Time: 2026 Jan 19 1203 UTC WATCH: Geomagnetic Storm Category G4 or Greater Predicted Highest Storm Level Predicted by Day: Jan 20: G4 (Severe) Jan 21: G1 (Minor) Jan 22: None (Below G1) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3605 Issue Time: 2026 Jan 19 0500 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3604 Begin Time: 2026 Jan 12 1040 UTC Yesterday Maximum 2MeV Flux: 4619 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 Jan 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 19 Issued at 0030Z on 19 Jan 2026 Report compiled from data received at SWO on 18 Jan I. Regions with Sunspots. Locations Valid at 18/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4341 S11E17 045 0360 Dkc 07 13 Beta-Gamma-Delta 4342 N16E22 040 ...Continue Reading

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #26-3 2026 January 18 at 5:24 p.m. MST (2026 January 19 0024 UTC) **** SPACE WEATHER OUTLOOK **** Summary For January 12-18 G1 (Minor) geomagnetic storms were observed on 16 and 17 January. R1 (Minor) radio blackouts were observed on 14 and 17 January. R3 (Strong) radio blaackouts were observed on 18 January. S1 (Minor) solar radiation storms were observed on ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3604 Issue Time: 2026 Jan 18 0602 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3603 Begin Time: 2026 Jan 12 1040 UTC Yesterday Maximum 2MeV Flux: 2763 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 Jan 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 18 Issued at 0030Z on 18 Jan 2026 Report compiled from data received at SWO on 17 Jan I. Regions with Sunspots. Locations Valid at 17/2400Z Nmbr Location Lo Area Z LL NN Mag Type 4341 S11E30 045 0500 Dkc 09 18 Beta-Gamma 4342 N17E35 040 0100 C ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3603 Issue Time: 2026 Jan 17 1343 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3602 Begin Time: 2026 Jan 12 1040 UTC Yesterday Maximum 2MeV Flux: 8698 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