Alert archive / Winter Weather Advisories
Winter Weather Advisories in the United States, 2011
2,168 winter weather advisories in 2011. 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
- 2,168
- Busiest month
- January508 winter weather advisories
- Busiest day
- February 24, 201139 winter weather advisories
Over time
By month
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- Montana205
- California168
- Alaska163
- Colorado161
- Wyoming139
- Washington123
- Idaho109
- Minnesota98
- Oregon90
- Pennsylvania90
- New York89
- Michigan89
- Nebraska85
- Kansas79
- Wisconsin71
- Maine67
- Utah63
- West Virginia62
- North Dakota60
- Iowa57
- South Dakota57
- Missouri55
- Virginia55
- Texas54
- Nevada53
- Ohio52
- North Carolina50
- Maryland50
- Tennessee46
- Massachusetts46
- Kentucky45
- Indiana44
- Illinois43
- New Mexico42
- New Hampshire40
- Arizona39
- Arkansas37
- Vermont36
- Connecticut33
- New Jersey30
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowThe tornado archiveThe radar archive20102012
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.