Weather alerts in Delaware County, Iowa

3,353 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Delaware County and its neighbors

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

Alerts: 3,353
Warnings: 805
Watches: 616
Advisories: 779
Busiest year: 2008226 alerts
Average year: 84over 40 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.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	411
Tornado Warning	75
Severe Thunderstorm Watch	268
Tornado Watch	110
Mesoscale Discussion	757
Special Weather Statement	396
Flooding
Areal Flood Warning	15
Flash Flood Warning	77
River Flood Warning	31
Flash Flood Watch	88
Flood Watch	26
River Flood Watch	4
River Flood Advisory	2
Winter
Blizzard Warning	13
Ice Storm Warning	4
Snow Squall Warning	2
Winter Storm Warning	62
Blizzard Watch	4
Winter Storm Watch	72
Blowing Snow Advisory	6
Freezing Rain Advisory	13
Snow Advisory	14
Snow and Blowing Snow Advisory	4
Winter Weather Advisory	188
Heat
Excessive Heat Warning	8
Extreme Heat Warning	2
Excessive Heat Watch	8
Extreme Heat Watch	4
Heat Advisory	55
Cold
Extreme Cold Warning	3
Freeze Warning	50
Wind Chill Warning	20
Extreme Cold Watch	2
Freeze Watch	13
Wind Chill Watch	5
Cold Weather Advisory	11
Frost Advisory	54
Wind Chill Advisory	106
Wind and dust
High Wind Warning	12
High Wind Watch	7
Wind Advisory	123
Fire
Red Flag Warning	20
Fire Weather Watch	5
Fog and smoke
Air Stagnation Advisory	2
Dense Fog Advisory	199
Freezing Fog Advisory	2

The latest warnings

The most recent on file, newest first.

Issued	Product	Office	Lasted
Sep 20, 5:12 AM CDT	Flash Flood Warning	DVN	4 hr
Sep 4, 7:04 PM CDT	Severe Thunderstorm Warning	DVN	41 min
Aug 11, 7:36 AM CDT	Tornado Warning	DVN	39 min
Aug 11, 7:15 AM CDT	Tornado Warning	DVN	45 min
Aug 11, 7:11 AM CDT	Severe Thunderstorm Warning Destructive damage threat	DVN	49 min
Aug 11, 7:09 AM CDT	Severe Thunderstorm Warning	DVN	81 min
Aug 10, 9:02 PM CDT	Tornado Warning	DVN	43 min
Aug 7, 5:02 PM CDT	Tornado Warning	DVN	43 min
Aug 7, 4:48 PM CDT	Severe Thunderstorm Warning	DVN	57 min
Jul 25, 2:49 AM CDT	Extreme Heat Warning	DVN	67 hr
Jul 2, 3:57 PM CDT	Severe Thunderstorm Warning	DVN	63 min
Jul 2, 3:26 PM CDT	Severe Thunderstorm Warning	DVN	49 min

Nearby

Alerts in force now Tornadoes on record Forecast The 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.