Aurora possible tonight: Geomagnetic Storm Watch issued

Tomer’s Take:

  • The Space Weather Prediction Center (SWPC) issued a Geomagnetic Storm Watch for a “G3” level storm intensity late 8/17 into 8/18.
  • A G3 is categorized as “strong”.
  • This generates a KP Index of 7. Generally, this brings the Aurora Borealis viewing line south to about 50° latitude. Sometimes locations a little further south of 50° might catch some low horizon viewing.
  • Seeing the Aurora Borealis in Colorado is not a lock.
  • If it happens, best viewing occurs in Northeast Colorado.
  • Colorado Timing: 11pm 8/17 through 5am 8/18.
Aurora Borealis forecast.

Forecast overnight 8/17 into 8/18:

  • Denver: Clear Skies
  • Greeley: Clear Skies
  • Sterling: Clear Skies
  • Fort Collins: Clear Skies
  • Fort Morgan: Clear Skies
  • Stoneham: Clear Skies
  • Holyoke: Clear Skies
  • Limon: Clear Skies

This is a photo from June 2015 in Northeastern Colorado taken by photographer Dusting Price.

Photo by Dustin Price.

4 thoughts on “Aurora possible tonight: Geomagnetic Storm Watch issued

  1. George Dunham

    This spring and summer i have photographed the aurora 3 times here in Crawford 38.7 N. Very dim and picked up with my all sky camera on 45 sec exposures. I am afraid the monsoon clouds will make spotting aurora difficult. Perhaps we will have enough drying to clear the night sky.

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