List of Storm Prediction Center extremely critical days
An extremely critical fire weather event is the greatest threat level issued by the NWS Storm Prediction Center (SPC) for wildfire events in the United States. On the scale from one to three, an extremely critical is a level three; thus, these outlooks are issued only when forecasters at the SPC are confident of extremely dangerous wildfire conditions on a given day, and are typically reserved for the most extreme events. They are only issued for either Day 2 (with the event occurring the following day) or for Day 1 (on the day of the event). In contrast with high risk outlooks for severe weather outbreaks, extremely critical outlooks are commonly issued for Day 2. This is due to the fact that the conditions required for volatile wildfire spread are easier to predict well in advance than the conditions required for a major tornado outbreak or derecho. Similar to high risk outlooks, extremely critical outlooks also cannot be issued for Day 3 of the outlook period.

Extremely critical days

2000–2009

2010–2019

2020–present

See also
 List of deadliest Storm Prediction Center days by outlook risk level
 List of Storm Prediction Center high risk days

Notes

References 

National Weather Service
United States environment-related lists
Weather-related lists
Weather warnings and advisories
Wildfires in the United States