NOAA SEC Space Weather Advisory Bulletin #10- 1: Strong Geomagnetic Storm in Progress

Status Report From: Space Weather Prediction Center (NOAA)

Posted: Monday, April 5, 2010

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center

Boulder, Colorado, USA



SPACE WEATHER ADVISORY BULLETIN #10- 1

2010 April 05 at 12:13 p.m. MST (2010 April 05 1213 UTC)



**** STRONG GEOMAGNETIC STORM IN PROGRESS ****



A geomagnetic storm began at 05:55 AM EST Monday, April 5, 2010. Space weather storm levels reached Strong (G3) levels on the Geomagnetic Storms Space Weather Scale. The source of the storming is an Earth-directed Coronal Mass Ejection associated with a weak solar flare that occurred in Active Region 1059 on April 3 at 05:54 AM EST. This is expected to be an isolated storm that should subside quickly. Other than the flare and CME erupting on April 3, this active region has not produced any significant activity. Systems that can be affected include electric power systems, spacecraft operations, high-frequency communications, GPS, and other navigation systems.



Data used to provide space weather services are contributed by NOAA, USAF, NASA, NSF, USGS, the International Space Environment Services and other observatories, universities, and institutions. More information is available at SWPC's Web site http://swpc.noaa.gov





ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu



Space Weather Message Code: ALTEF3

Serial Number: 1651

Issue Time: 2010 Apr 05 0949 UTC



ALERT: Electron 2MeV Integral Flux exceeded 1000pfu

Threshold Reached: 2010 Apr 05 0915 UTC

Station: GOES-11



NOAA Space Weather Scale descriptions can be found at

www.swpc.noaa.gov/NOAAscales





ALERT: Geomagnetic K-index of 7



Space Weather Message Code: ALTK07

Serial Number: 81

Issue Time: 2010 Apr 05 0956 UTC



ALERT: Geomagnetic K-index of 7

Threshold Reached: 2010 Apr 05 0955 UTC

Synoptic Period: 0900-1200 UTC

Station: Boulder

Active Warning: No

NOAA Scale: G3 - Strong



NOAA Space Weather Scale descriptions can be found at

www.swpc.noaa.gov/NOAAscales

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