NOAA Issues G2 Geomagnetic Storm Watch for July 3 After X1.1 Flare
Updated
Updated · Space.com · Jul 1
NOAA Issues G2 Geomagnetic Storm Watch for July 3 After X1.1 Flare
2 articles · Updated · Space.com · Jul 1
Summary
July 3 is now under a Moderate G2 geomagnetic storm watch after NOAA said further analysis showed part of a June 30 coronal mass ejection could strike Earth.
The CME followed an X1.1 solar flare from sunspot AR4479 that peaked at 2050 GMT and triggered strong R3 radio blackouts across the daylight side of Earth, affecting high-frequency radio users in parts of North America.
A G2 storm can push auroras farther south than usual, with NOAA saying northern lights may be visible from New York to Idaho if skies are dark and clear.
The display will depend on the CME's strength and magnetic-field orientation when it arrives; such particle clouds typically take one to three days to reach Earth.