Alert archive / Winter Weather Advisories / 2009
Winter Weather Advisories in the United States, August 2009
2 winter weather advisories in August 2009. Each alert counts once, however many counties it covered. The archive of winter weather advisories reaches back to 2005.
Winter Weather Advisories by state
Each state shaded by its count. Tap a state for its own archive.
- Winter Weather Advisories
- 2
- Busiest day
- August 13, 20091 winter weather 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.
- Alaska154
- Montana152
- Wyoming134
- Colorado127
- California126
- Washington116
- Michigan107
- Idaho100
- Oregon96
- Nebraska93
- Minnesota91
- Iowa89
- West Virginia89
- Wisconsin76
- Kansas76
- New York73
- Pennsylvania73
- Virginia72
- Texas68
- South Dakota67
- North Carolina66
- Utah56
- Indiana54
- Ohio54
- Maryland54
- Nevada51
- Maine50
- New Mexico48
- Illinois47
- North Dakota44
- Missouri37
- Kentucky33
- Massachusetts32
- Tennessee32
- Connecticut30
- New Hampshire30
- Oklahoma28
- Arkansas25
- Vermont24
- Arizona24
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. Warning verification from the Mesonet's Cow. Rebuilt daily.