Geomagnetic Storm WATCH Upgraded to Warning

Iowa Climate Science Education

Yesterday, the National Weather Service’s Space Weather Prediction Center (SWPC) upgraded the Geomagnetic Storm Watch then in effect to a Geomagnetic Storm Warning after detecting the early arrival of a strong solar wind.

Coronal Loops are one feature in the solar corona scientists hope to learn more about during the upcoming solar eclipse. Image: NASA/TRACE

The SWPC said minor to moderate geomagnetic storm levels were being observed which indicated the early arrival of an anticipated coronal mass ejection that left the Sun on Sunday, April 22. The enhancement in solar wind parameters were first observed by the DSCOVR spacecraft.

The GOES Solar Ultraviolet imager shows a large Coronal Mass Ejection (CME) exploding off the Sun. Image: NOAA

The strong solar wind was expected to cause auroral enhancements that might be visible at night in higher latitudes under favorable sky conditions. Due to the strength of this disturbance , aurora could…

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