Local 3/18/2026, 9:03:34 AM
UTC 2026-03-18T09:03:34.557Z
Space Weather Message Code: SUM10RSerial Number: 902Issue Time: 2026 Mar 18 0903 UTCSUMMARY: 10cm Radio BurstBegin Time: 2026 Mar 18 0833 UTCMaximum Time: 2026 Mar 18 0835 UTCEnd Time: 2026 Mar 18 0839 UTCDuration: 6 minutesPeak Flux: 229 sfuLatest Penticton Noon Flux: 111 sfuDescription: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Local 3/18/2026, 8:59:48 AM
UTC 2026-03-18T08:59:48.527Z
Space Weather Message Code: ALTTP2Serial Number: 1470Issue Time: 2026 Mar 18 0859 UTCALERT: Type II Radio EmissionBegin Time: 2026 Mar 18 0840 UTCEstimated Velocity: 866 km/sDescription: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Local 3/18/2026, 4:59:44 AM
UTC 2026-03-18T04:59:44.273Z
Space Weather Message Code: ALTEF3Serial Number: 3650Issue Time: 2026 Mar 18 0459 UTCCONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfuContinuation of Serial Number: 3649Begin Time: 2026 Mar 15 1630 UTCYesterday Maximum 2MeV Flux: 2233 pfuPotential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Local 3/17/2026, 6:36:37 PM
UTC 2026-03-17T18:36:37.167Z
Space Weather Message Code: WATA30Serial Number: 264Issue Time: 2026 Mar 17 1836 UTCWATCH: Geomagnetic Storm Category G2 PredictedHighest Storm Level Predicted by Day:Mar 18: None (Below G1) Mar 19: G2 (Moderate) Mar 20: G1 (Minor)THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECTComment: CME influences are likely on 19 Mar with any effects continuing, but weakening, into 20 Mar.NOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.Radio - HF (high frequency) radio propagation can fade at higher latitudes.Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Local 3/17/2026, 2:03:49 PM
UTC 2026-03-17T14:03:49.470Z
Space Weather Message Code: ALTEF3Serial Number: 3649Issue Time: 2026 Mar 17 1403 UTCCONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfuContinuation of Serial Number: 3648Begin Time: 2026 Mar 15 1630 UTCYesterday Maximum 2MeV Flux: 2213 pfuPotential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Local 3/16/2026, 9:08:59 PM
UTC 2026-03-16T21:08:59.560Z
Space Weather Message Code: WATA30Serial Number: 264Issue Time: 2026 Mar 16 2108 UTCWATCH: Geomagnetic Storm Category G2 PredictedHighest Storm Level Predicted by Day:Mar 17: None (Below G1) Mar 18: None (Below G1) Mar 19: G2 (Moderate)THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECTComment: G2 (Moderate) geomagnetic storming is likely on 19 Mar with the arrival of a CME that left the Sun on 16 Mar. This is a reissue of the previous watch to correct an internal system error.NOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.Radio - HF (high frequency) radio propagation can fade at higher latitudes.Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Local 3/16/2026, 8:25:18 PM
UTC 2026-03-16T20:25:18.200Z
Space Weather Message Code: WATA30Serial Number: 264Issue Time: 2026 Mar 16 2025 UTCWATCH: Geomagnetic Storm Category G2 PredictedHighest Storm Level Predicted by Day:Mar 17: None (Below G1) Mar 18: None (Below G1) Mar 19: G2 (Moderate)THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECTComment: G2 (Moderate) geomagnetic storming is likely on 19 Mar with the arrival of the 16 Mar CME event. This event was associated with an M2.7 flare from AR 4392.NOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.Radio - HF (high frequency) radio propagation can fade at higher latitudes.Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.