Local 5/27/2026, 2:45:02 PM
UTC 2026-05-27T14:45:02.823Z
Space Weather Message Code: SUMPX1Serial Number: 131Issue Time: 2026 May 27 1445 UTCCANCELLED SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu Cancel Serial Number: 130 Original Issued Time: 2026-05-27T02:28:00 Cancelled 2026-05-27 14:44 by Forecaster User duplicateCancelled 2026-05-27 14:44 by Forecaster User duplicateNOAA Scale: S1 - Minor
Local 5/27/2026, 5:47:17 AM
UTC 2026-05-27T05:47:17.563Z
Space Weather Message Code: WARK04Serial Number: 5348Issue Time: 2026 May 27 0547 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 5347 Valid From: 2026-05-26T21:37:00 Now Valid Until: 2026-05-27 12:00 Warning Condition: Persistence Extended 2026-05-27 05:47 by Forecaster UserExtended 2026-05-27 05:47 by Forecaster UserNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.Induced Currents - Weak power grid fluctuations can occur.Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Local 5/27/2026, 2:28:51 AM
UTC 2026-05-27T02:28:51.080Z
Space Weather Message Code: SUMPX1Serial Number: 130Issue Time: 2026 May 27 0228 UTCSUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu Begin Time: 2026 May 27 0015 UTC Maximum Time: 2026 May 26 0110 UTC End Time: 2026 May 26 0425 UTC Maximum 10MeV Flux: 23 pfu Noaa Scale: S1 - Minor Comment:NOAA Scale: S1 - Minor
Local 5/27/2026, 2:27:49 AM
UTC 2026-05-27T02:27:49.300Z
Space Weather Message Code: SUMPX1Serial Number: 129Issue Time: 2026 May 27 0227 UTCSUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu Begin Time: 2026 May 26 0015 UTC Maximum Time: 2026 May 26 0110 UTC End Time: 2026 May 26 0425 UTC Maximum 10MeV Flux: 23 pfu Noaa Scale: S1 - Minor Comment:NOAA Scale: S1 - Minor
Local 5/27/2026, 12:01:34 AM
UTC 2026-05-27T00:01:34.010Z
Space Weather Message Code: ALTK04Serial Number: 2658Issue Time: 2026 May 27 0001 UTCALERT: Geomagnetic K-index of 4 Threshold Reached: 2026 May 26 2359 UTC Synoptic Period: 2100-2400 Active Warning: YES Comment:NOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.Induced Currents - Weak power grid fluctuations can occur.Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Local 5/26/2026, 9:38:28 PM
UTC 2026-05-26T21:38:28.160Z
Space Weather Message Code: WARK04Serial Number: 5347Issue Time: 2026 May 26 2138 UTCWARNING: Geomagnetic K-index of 4 expected Valid From: 2026 May 26 2137 UTC Valid To: 2026 May 27 0600 UTC Warning Conditions: Onset Comment:NOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.Induced Currents - Weak power grid fluctuations can occur.Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Local 5/26/2026, 2:22:06 PM
UTC 2026-05-26T14:22:06.270Z
Space Weather Message Code: ALTTP2Serial Number: 1494Issue Time: 2026 May 26 1422 UTCALERT: Type II Radio Emission Begin Time: 2026 May 26 1244 UTC Estimate Velocity: 650 km/s Comment: SVI; updated with correct start timeSVI; updated with correct start time
Local 5/26/2026, 2:20:21 PM
UTC 2026-05-26T14:20:21.537Z
Space Weather Message Code: ALTTP2Serial Number: 1494Issue Time: 2026 May 26 1420 UTCALERT: Type II Radio Emission Begin Time: 2026 May 26 1420 UTC Estimate Velocity: 650 km/s Comment: SVISVI
Local 5/26/2026, 2:19:50 PM
UTC 2026-05-26T14:19:50.663Z
Space Weather Message Code: ALTTP2Serial Number: 1493Issue Time: 2026 May 26 1419 UTCCANCELLED ALERT: Type II Radio Emission Cancel Serial Number: 1490 Original Issued Time: 2026-05-26T14:19:00 Cancelled 2026-05-26 14:19 by Forecaster User Duplicate.Cancelled 2026-05-26 14:19 by Forecaster User Duplicate.
Local 5/26/2026, 2:19:46 PM
UTC 2026-05-26T14:19:46.627Z
Space Weather Message Code: ALTTP2Serial Number: 1492Issue Time: 2026 May 26 1419 UTCCANCELLED ALERT: Type II Radio Emission Cancel Serial Number: 1491 Original Issued Time: 2026-05-26T14:19:00 Cancelled 2026-05-26 14:19 by Forecaster User Duplicate.Cancelled 2026-05-26 14:19 by Forecaster User Duplicate.
Local 5/26/2026, 2:19:17 PM
UTC 2026-05-26T14:19:17.593Z
Space Weather Message Code: ALTTP2Serial Number: 1491Issue Time: 2026 May 26 1419 UTCALERT: Type II Radio Emission Begin Time: 2026 May 26 1244 UTC Estimate Velocity: 650 km/s Comment: SVISVI
Local 5/26/2026, 2:19:17 PM
UTC 2026-05-26T14:19:17.563Z
Space Weather Message Code: ALTTP2Serial Number: 1490Issue Time: 2026 May 26 1419 UTCALERT: Type II Radio Emission Begin Time: 2026 May 26 1244 UTC Estimate Velocity: 650 km/s Comment: SVISVI
Local 5/26/2026, 2:19:17 PM
UTC 2026-05-26T14:19:17.460Z
Space Weather Message Code: ALTTP2Serial Number: 1490Issue Time: 2026 May 26 1418 UTCALERT: Type II Radio Emission Begin Time: 2026 May 26 1244 UTC Estimate Velocity: 650 km/s Comment: SVISVI
Local 5/26/2026, 2:19:17 PM
UTC 2026-05-26T14:19:17.453Z
Space Weather Message Code: ALTTP2Serial Number: 1490Issue Time: 2026 May 26 1419 UTCALERT: Type II Radio Emission Begin Time: 2026 May 26 1244 UTC Estimate Velocity: 650 km/s Comment: SVISVI
Local 5/26/2026, 2:19:17 PM
UTC 2026-05-26T14:19:17.440Z
Space Weather Message Code: ALTTP2Serial Number: 1490Issue Time: 2026 May 26 1419 UTCALERT: Type II Radio Emission Begin Time: 2026 May 26 1244 UTC Estimate Velocity: 650 km/s Comment: SVISVI
Local 5/26/2026, 2:19:17 PM
UTC 2026-05-26T14:19:17.437Z
Space Weather Message Code: ALTTP2Serial Number: 1490Issue Time: 2026 May 26 1419 UTCALERT: Type II Radio Emission Begin Time: 2026 May 26 1244 UTC Estimate Velocity: 650 km/s Comment: SVISVI
Local 5/26/2026, 2:19:17 PM
UTC 2026-05-26T14:19:17.417Z
Space Weather Message Code: ALTTP2Serial Number: 1490Issue Time: 2026 May 26 1419 UTCALERT: Type II Radio Emission Begin Time: 2026 May 26 1244 UTC Estimate Velocity: 650 km/s Comment: SVISVI
Local 5/26/2026, 12:35:09 AM
UTC 2026-05-26T00:35:09.697Z
Space Weather Message Code: ALTPX1Serial Number: 365Issue Time: 2026 May 26 0035 UTCALERT: Proton Event 10meV Integral Flux exceeded 10pfu Begin Time: 2026 May 26 0010 UTC Noaa Scale: S1 - Minor Comment:NOAA Scale: S1 - Minor
Local 5/26/2026, 12:16:17 AM
UTC 2026-05-26T00:16:17.667Z
Space Weather Message Code: WARPX1Serial Number: 625Issue Time: 2026 May 26 0016 UTCWARNING: Proton 10MeV Integral Flux above 10pfu expected Valid From: 2026 May 26 0015 UTC Valid To: 2026 May 26 2359 UTC Warning Conditions: Onset Noaa Scale: S1 - Minor Comment:NOAA Scale: S1 - Minor