Lexington, Massachusetts, USA
Issued by the National Weather Service
Areas Affected: Northern Panhandle; Coeur d'Alene Area; Idaho Palouse; Central Panhandle Mountains; Lewiston Area; Lewis and Southern Nez Perce Counties; Northeast Blue Mountains; Lower Garfield and Asotin Counties; Washington Palouse; Moses Lake Area; Upper Columbia Basin; Spokane Area; Northeast Mountains; Okanogan Highlands; Wenatchee Area; Okanogan Valley; Waterville Plateau; Central Chelan County; Western Chelan County; Western Okanogan County
Urgency: Expected
Severity: Moderate
Certainty: Observed
Alert Sent: Saturday 5:12am PDT
Alert Effective: Saturday 5:12am PDT
Alert Expires: Saturday 5:00pm PDT
Event Onset: Saturday 5:12am PDT
Issued by: NWS Spokane WA
...EXTREME GEOMAGNETIC CONDITIONS OBSERVED AND SEVERE GEOMAGNETIC STORMS EXPECTED TO CONTINUE THROUGH THE WEEKEND... The NOAA Space Weather Prediction Center has observed extreme (G5) geomagnetic conditions early Saturday morning and expects severe (G4) conditions to continue through the weekend. * A Geomagnetic Storm of this strength can cause multiple and widespread issues with various power and communication systems. * Widespread voltage control problems may occur; some power grid systems may experience component failures, disruption of service and protective device trips. This could result in blackouts. * Pipeline currents can reach hundreds of amps. * GPS and other satellite navigation may be degraded or unavailable for days. * High Frequency (HF) radio propagation may be impossible in many areas for one or two days. * Low-frequency radio navigation can be out for hours. * Aurora may be visible at much lower latitudes. For Space Weather Information visit...www.swpc.noaa.gov For Weather Information visit...www.weather.gov
ID: urn:oid:2.49.0.1.840.0.cac0eae96886ac45ba0a3182e067f0ec158dc9fc.001.1 Codes: IDZ001, IDZ002, IDZ003, IDZ004, IDZ026, IDZ027, WAZ031, WAZ032, WAZ033, WAZ034, WAZ035, WAZ036, WAZ037, WAZ038, WAZ041, WAZ043, WAZ044, WAZ047, WAZ048, WAZ049 Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.cac0eae96886ac45ba0a3182e067f0ec158dc9fc.001.1