Lexington, Massachusetts, USA
Issued by the National Weather Service
Areas Affected: Clatsop County Coast; Tillamook County Coast; Central Coast of Oregon; North Oregon Coast Range Lowlands; Central Oregon Coast Range Lowlands; North Oregon Coast Range; Central Oregon Coast Range; Lower Columbia River; Tualatin Valley; West Hills and Chehalem Mountains; Inner Portland Metro; East Portland Metro; Outer Southeast Portland Metro; West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands; West Columbia River Gorge of Oregon above 500 ft; West Columbia River Gorge I-84 Corridor; Upper Hood River Valley; Central Columbia River Gorge I-84 Corridor; Clackamas County Cascade Foothills; Cascade Foothills of Marion and Linn Counties; Lane County Cascade Foothills; North Oregon Cascades; Cascades of Marion and Linn Counties; Cascades of Lane County; South Washington Coast; Willapa and Wahkiakum Lowlands; Willapa Hills; Cowlitz County Lowlands; North Clark County Lowlands; Inner Vancouver Metro; East Clark County Lowlands; South Washington Cascade Foothills; West Columbia River Gorge - SR 14; Central Columbia River Gorge - SR 14; South Washington Cascades
Urgency: Expected
Severity: Moderate
Certainty: Observed
Alert Sent: Saturday 2:01pm PDT
Alert Effective: Saturday 2:01pm PDT
Alert Expires: Sunday 5:45am PDT
Event Onset: Saturday 2:01pm PDT
Issued by: NWS Portland OR
...EXTREME GEOMAGNETIC CONDITIONS OBSERVED AND CONTINUED SEVERE GEOMAGNETIC STORM EXPECTED TO CONTINUE THROUGH THE WEEKEND... The NOAA Space Weather Prediction Center has observed extreme (G5) geomagnetic conditions Saturday morning and expect 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:2.49.0.1.840.0.242c9863120eb1fb25373ecca3d2989117e583bd.001.1 Codes: ORZ101, ORZ102, ORZ103, ORZ104, ORZ105, ORZ106, ORZ107, ORZ108, ORZ109, ORZ110, ORZ111, ORZ112, ORZ113, ORZ114, ORZ115, ORZ116, ORZ117, ORZ118, ORZ119, ORZ120, ORZ121, ORZ122, ORZ123, ORZ124, ORZ125, ORZ126, ORZ127, ORZ128, WAZ201, WAZ202, WAZ203, WAZ204, WAZ205, WAZ206, WAZ207, WAZ208, WAZ209, WAZ210, WAZ211 Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.242c9863120eb1fb25373ecca3d2989117e583bd.001.1