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Special Weather Statement issued May 11 at 4:14PM PDT by NWS Seattle WA

8 months ago
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 communications systems. Widespread voltage control problems may occur, and some power grid systems may experience component failures, disruption of service, and protective device trips. This could result in blackouts. GPS and other satellite navigation may be degraded for days. HF/VHF/UHF radio propagation may be impossible in many areas for one to 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
NWS

Special Weather Statement issued May 11 at 3:54PM PDT by NWS Spokane WA

8 months ago
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
NWS

Special Weather Statement issued May 11 at 2:38PM PDT by NWS Pendleton OR

8 months ago
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
NWS

Special Weather Statement issued May 11 at 2:38PM PDT by NWS Pendleton OR

8 months ago
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
NWS

Special Weather Statement issued May 11 at 2:01PM PDT by NWS Portland OR

8 months ago
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
NWS

Special Weather Statement issued May 11 at 2:01PM PDT by NWS Portland OR

8 months ago
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
NWS

Special Weather Statement issued May 11 at 5:14AM PDT by NWS Portland OR

8 months ago
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
NWS

Special Weather Statement issued May 11 at 5:14AM PDT by NWS Portland OR

8 months ago
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
NWS

Special Weather Statement issued May 11 at 5:12AM PDT by NWS Spokane WA

8 months ago
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
NWS

Special Weather Statement issued May 11 at 5:11AM PDT by NWS Pendleton OR

8 months ago
The NOAA Space Weather Prediction Center has observed extreme (G5) geomagnetic conditions this 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
NWS

Special Weather Statement issued May 11 at 5:11AM PDT by NWS Pendleton OR

8 months ago
The NOAA Space Weather Prediction Center has observed extreme (G5) geomagnetic conditions this 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
NWS

Special Weather Statement issued May 11 at 5:09AM PDT by NWS Seattle WA

8 months ago
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 and widespread issues with various power and communications systems. Widespread voltage control problems may occur, and some power grid systems may experience component failures, disruption of service, and protective device trips. This could result in blackouts. GPS and other satellite navigation may be degraded for days. HF/VHF/UHF radio propagation may be impossible in many areas for one to 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
NWS

Special Weather Statement issued May 10 at 8:46PM PDT by NWS Pendleton OR

8 months ago
The NOAA Space Weather Prediction Center has observed extreme (G5) geomagnetic conditions Friday afternoon 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
NWS

Special Weather Statement issued May 10 at 6:32PM PDT by NWS Spokane WA

8 months ago
The NOAA Space Weather Prediction Center has observed extreme (G5) geomagnetic conditions Friday afternoon 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
NWS

Special Weather Statement issued May 10 at 6:16PM PDT by NWS Pendleton OR

8 months ago
The NOAA Space Weather Prediction Center has observed extreme (G5) geomagnetic conditions Friday afternoon 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
NWS

Special Weather Statement issued May 10 at 6:16PM PDT by NWS Pendleton OR

8 months ago
The NOAA Space Weather Prediction Center has observed extreme (G5) geomagnetic conditions Friday afternoon 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
NWS

Special Weather Statement issued May 10 at 6:03PM PDT by NWS Seattle WA

8 months ago
The NOAA Space Weather Prediction Center has observed extreme (G5) geomagnetic conditions Friday afternoon and expects severe (G4) conditions to continue through the weekend. A geomagnetic storm of this strength can cause multiple and and widespread issues with various power and communications systems. Widespread voltage control problems may occur, and some power grid systems may experience component failures, disruption of service, and protective device trips. This could result in blackouts. GPS and other satellite navigation may be degraded for days. HF/VHF/UHF radio propagation may be impossible in many areas for one to 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
NWS

Special Weather Statement issued May 10 at 5:57PM PDT by NWS Portland OR

8 months ago
The NOAA Space Weather Prediction Center has observed extreme (G5) geomagnetic conditions Friday afternoon 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 my 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
NWS