Apologies I will not be able to respond to everyone's request for an aurora forecast for their city tonight, but please locate yourself on this map! You want to be north of the red line and in the blue for the best chance at seeing aurora tonight, so long as the geomagnetic storm holds in intensity!
(UPDATED) TONIGHT'S AURORA FORECAST:
Based on current data, we've moved our possible Northern Lights viewing farther south. A moderate, strong, or severe geomagnetic storm is possible.
Aurora viewing is likely in the United States tonight as Earth is impacted by a strong solar storm. The most favorable cloud conditions look to be over the Midwest, Plains and parts of the Great Lakes and less favorable conditions in the Northeast and Northwest.
Remarkably, the eastern equatorial Niño1+2 SST anomaly is already approaching +3°C, a degree of warmth only seen in the strongest El Niño episodes of recent decades.
On a monthly basis, Niño1+2 exceeded +2.5°C in 1982-83, 1997-98, and July 2015.
(OISSTv2.1, ERSSTv5 data)