Cancelled Alert!

Space Weather Message Code: ALTTP4 Serial Number: 558 Issue Time: 2021 Dec 21 0713 UTC CANCEL ALERT: Type IV Radio Emission Cancel Serial Number: 557 Original Issue Time: 2021 Dec 21 0640 UTC Comment: Incorrect radio sweep type issued by observatory. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Description: Type IV emissions … Read moreCancelled Alert!

Another CME Happening Now?

Space Weather Message Code: ALTTP4 Serial Number: 557 Issue Time: 2021 Dec 21 0640 UTC ALERT: Type IV Radio Emission Begin Time: 2021 Dec 21 0508 UTC NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with … Read moreAnother CME Happening Now?

KP4, Geomagnetic Unrest

Space Weather Message Code: WARK04Serial Number: 3987Issue Time: 2021 Dec 21 0437 UTCEXTENDED WARNING: Geomagnetic K-index of 4 expectedExtension to Serial Number: 3986Valid From: 2021 Dec 21 0206 UTCNow Valid Until: 2021 Dec 21 0900 UTCWarning Condition: OnsetNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential Impacts: Area of impact primarily poleward of 65 degrees … Read moreKP4, Geomagnetic Unrest

M-Class Flare Likely Generated a CME

Peak flux (for x-ray flare of M-class) was ~11:35 UT. Space Weather Message Code: ALTTP2 Serial Number: 1107 Issue Time: 2021 Dec 20 1205 UTC ALERT: Type II Radio Emission Begin Time: 2021 Dec 20 1122 UTC Estimated Velocity: 350 km/s NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Description: Type II emissions … Read moreM-Class Flare Likely Generated a CME