Alert archive / Ashfall Advisories / 2009
Ashfall Advisories in the United States, March 2009
10 ashfall advisories in March 2009. Each alert counts once, however many counties it covered. The archive of ashfall advisories reaches back to 2005.
Ashfall Advisories by state
Each state shaded by its count. Tap a state for its own archive.
- Ashfall Advisories
- 10
- Busiest day
- March 23, 20092 ashfall advisories
Over time
By day
Days in UTC, the clock the archive keeps.
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
Nearby
Alerts in force nowThe tornado archiveThe radar archive20082010
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.