Weather alerts in Delaware

8,210 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

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

Alerts: 8,210
Warnings: 2,666
Watches: 843
Advisories: 2,068
Busiest year: 2011590 alerts
Average year: 200over 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.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	1,480
Tornado Warning	114
Severe Thunderstorm Watch	314
Tornado Watch	67
Mesoscale Discussion	1,001
Special Weather Statement	1,365
Flooding
Areal Flood Warning	125
Flash Flood Warning	413
River Flood Warning	178
Flash Flood Watch	98
Flood Watch	110
Areal Flood Advisory	725
Winter
Blizzard Warning	7
Ice Storm Warning	2
Snow Squall Warning	10
Winter Storm Warning	58
Blizzard Watch	1
Winter Storm Watch	49
Freezing Rain Advisory	9
Snow Advisory	8
Snow and Blowing Snow Advisory	1
Winter Weather Advisory	162
Heat
Excessive Heat Warning	48
Extreme Heat Warning	4
Excessive Heat Watch	47
Extreme Heat Watch	4
Heat Advisory	120
Cold
Extreme Cold Warning	1
Freeze Warning	44
Hard Freeze Warning	2
Extreme Cold Watch	1
Freeze Watch	31
Cold Weather Advisory	4
Frost Advisory	78
Wind Chill Advisory	11
Wind and dust
High Wind Warning	45
High Wind Watch	28
Wind Advisory	235
Fire
Red Flag Warning	40
Fire Weather Watch	22
Fog and smoke
Dense Fog Advisory	172
Freezing Fog Advisory	4
Tropical
Hurricane Warning	2
Tropical Storm Warning	11
Hurricane Watch	4
Tropical Storm Watch	6
Coast and beach
Coastal Flood Warning	82
Coastal Flood Watch	61
Coastal Flood Advisory	505
High Surf Advisory	34
Beach Hazards Statement	1
Coastal Flood Statement	157
Rip Current Statement	109

By county

Every county with at least one alert. A county page lists each alert that covered it.

The latest warnings

The most recent on file, newest first.

Issued	Product	Office	Counties	Lasted
Sep 22, 4:14 PM EDT	Coastal Flood Warning	PHI	Kent, Sussex	57 hr
Sep 4, 1:35 AM EDT	Severe Thunderstorm Warning	PHI	Sussex	25 min
Sep 4, 12:52 AM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	53 min
Sep 3, 5:26 AM EDT	Areal Flood Warning	PHI	New Castle	4 hr
Sep 3, 1:34 AM EDT	Flash Flood Warning	PHI	New Castle	4 hr
Sep 3, 12:02 AM EDT	Severe Thunderstorm Warning	PHI	Kent	43 min
Sep 2, 2:38 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	47 min
Sep 2, 2:05 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	40 min
Sep 2, 1:35 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	40 min
Sep 1, 9:40 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle, Sussex	65 min
Sep 1, 8:46 PM EDT	Severe Thunderstorm Warning Destructive damage threat	PHI	Kent, New Castle	59 min
Sep 1, 8:44 PM EDT	Flash Flood Warning	PHI	New Castle	3 hr

Nearby

Alerts in force now Tornadoes on record 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.