Alert archive / Iowa

Weather alerts in Polk County, Iowa

3,819 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Polk County and its neighbors

Each county as a circle sized by its count since 1986. Tap one for its archive.

Alerts
3,819
Warnings
1,324
Watches
753
Advisories
725
Busiest year
2008305 alerts
Average year
93over 41 years on file

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The latest warnings

The most recent on file, newest first.

IssuedProductOfficeLasted
Sep 17, 9:35 PM CDTRiver Flood WarningDMX13 hr
Sep 15, 2:13 PM CDTRiver Flood WarningDMX4 hr
Sep 15, 1:45 PM CDTRiver Flood WarningDMX28 hr
Sep 9, 4:59 AM CDTRiver Flood WarningDMX16 hr
Sep 9, 2:08 AM CDTRiver Flood WarningDMX17 hr
Sep 9, 1:49 AM CDTFlash Flood WarningDMX5 hr
Sep 9, 1:29 AM CDTRiver Flood WarningDMX15 hr
Sep 8, 6:55 PM CDTSevere Thunderstorm Warning Considerable damage threatDMX50 min
Sep 8, 6:29 PM CDTFlash Flood WarningDMX6 hr
Sep 8, 6:21 PM CDTSevere Thunderstorm Warning Considerable damage threatDMX39 min
Sep 8, 5:50 PM CDTSevere Thunderstorm WarningDMX40 min
Aug 16, 10:54 AM CDTRiver Flood WarningDMX23 hr

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive

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.