Alert archive / Frost Advisories / 2025
Frost Advisories in the United States, September 2025
55 frost advisories in September 2025. Each alert counts once, however many counties it covered. The archive of frost advisories reaches back to 2005.
Frost Advisories by state
Each state shaded by its count. Tap a state for its own archive.
- Frost Advisories
- 55
- Busiest day
- September 8, 20258 frost 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.
- California100
- New York47
- Pennsylvania44
- West Virginia38
- Wisconsin37
- Michigan34
- Ohio32
- Florida29
- Virginia27
- Minnesota27
- North Carolina26
- Georgia23
- Kansas23
- Idaho23
- Maryland22
- Washington22
- Kentucky21
- Oregon20
- Indiana19
- Vermont18
- Maine18
- Nebraska18
- New Jersey16
- Illinois16
- Colorado13
- Missouri13
- South Dakota12
- Oklahoma12
- Arkansas12
- Alabama12
- Connecticut11
- North Dakota11
- Texas8
- New Hampshire8
- Iowa7
- Delaware6
- South Carolina6
- Massachusetts4
- Wyoming4
- Mississippi3
Nearby
Alerts in force nowThe tornado archiveThe radar archive20242026
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.