Alert archive / Delaware / Flash Flood Warnings in 1990
Flash Flood Warning 1, NWS Wilmington, NC
NWS Wilmington, NC issued this flash flood warning at May 29, 1990, 1:25 PM EDT for New Castle County, Delaware. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- May 29, 1990, 1:25 PM EDT (17:25 UTC)
- Expired
- May 29, 1990, 5:00 PM EDT
- In force
- 4 hr
- Issued by
- NWS Wilmington, NC
- Area
- Whole counties
County New Castle County, DE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 12:00Z, 5.4 hours before the alert went out and 99 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 555 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 272 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KILG 291739 COR FFWILG DEC003-292100- BULLETIN - EBS ACTIVATION REQUESTED SMALL STREAM AND URBAN FLOOD WARNING NATIONAL WEATHER SERVICE WILMINGTON DE 135 PM EDT TUE MAY 29 1990 THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL 500 PM EDT FOR NORTHERN DELAWARE. ALL RIVERS ARE INCLUDE EXCEPT THE BRANDYWINE RIVER. THE CURRENT READING AT COOCHS BRIDGE ON THE CHRISTINA RIVER IS AT 9.94 FT. WATER LEVELS ARE ABOVE FLOOD STAGE AT THIS TIME. FLOODING REPORTS HAVE BEEN RECEIVED AT THE NATIONAL WEATHER SERVICE IN WILMINGTON FROM THE NATIONAL GEOLOGICAL SERVICES REPORTING THE CHRISTINA RIVER IS WELL OVER ITS BANKS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. AN URBAN AND SMALL STREAM WARNING MEANS THAT FLOODING IS OCCURRING. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. LOMBARDY
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, May 29, 9:00 AM EDT, 4 hours 25 minutes before
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
Special weather statement, May 29, 9:01 AM EDT, 4 hours 24 minutes before
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
Nearby
Flash Flood Warnings in Delaware, 1990Every flash flood warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.