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Geo-Space Environment | 2017-05-28



Sunday, May 28, 2017 04:49 UTC

UPDATE: A G3 (Strong) geomagnetic storm alert was issued at 28/0419 UTC due to activity associated with the 23 May CME.

Solar Wind Speed: 385 km/sec

Solar Wind Magnetic Fields: Bt 16 nT, Bz -12 nT

Noon 10.7cm Radio Flux: 82 sfu

Planetary K-index
Now: Kp= 7 strong
24-hr max: Kp= 7

Current Arctic Auroral Oval

Arctic Auroral Oval

Current Antarctic Auroral Oval

Antarctic Auroral Oval

Sunspot number: 21

CME HITS, SPARKS AURORAS: A CME hit Earth’s magnetic field on May 27th. At first, for several hours, the seemingly weak impact barely disturbed our planet’s magnetic environment. Then the storms began. As Earth passed through the CME’s wake, energetic particles poured through a crack in Earth’s magnetosphere, sparking strong G3-class geomagnetic storms and bright auroras. The show’s not over.  Earth is still inside the CME’s wake, and G1– to G3-class storms are underway on May 28th. High-latitude sky watchers should remain alert for auroras.

More Information:
Space Weather Conditions
USAF/NOAA  3-day Report of Solar and Geophysical Activity Report and Forecast  – Updates
WSA-Enlil Solar Wind Prediction
Recently Reported Solar Events
SolarSoft’s “latest events”

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