Alert archive / Delaware / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 52, NWS Wilmington, NC
NWS Wilmington, NC issued this severe thunderstorm warning at Oct 18, 1990, 7:18 PM EDT for Kent County, Sussex County, Delaware. It was in force for 117 min.
The area
The counties it named.
The facts
- Issued
- Oct 18, 1990, 7:18 PM EDT (23:18 UTC)
- Expired
- Oct 18, 1990, 9:15 PM EDT
- In force
- 117 min
- Issued by
- NWS Wilmington, NC
- Area
- Whole counties
Counties Kent County, DE, Sussex 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, 11.3 hours before the alert went out and 101 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
- 732 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 92 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 182319 SVRILG DEC001-005-190115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WILMINGTON DE 718 PM EDT THU OCT 18 1990 THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...S... IN CENTRAL DELAWARE ...SOUTHERN KENT COUNTY FOR THE DELAWARE BAY FROM ALONG THE DELAWARE COAST FROM IN SOUTH DELAWARE ...NORTHERN SUSSEX COUNTY FOR THE DELAWARE BAY FROM ALONG THE DELAWARE COAST FROM NATIONAL WEATHER SERVICE RADAR SHOWS A THUNDERSSTORM WITH VERY HEAVY RAIN...POSSIBLE HAIL AND TORNADOES...DANGEROUS LIGHTNING AND DAMAGIKNG WINDS HAS JUST ENTERED SOUTH DELAWARE ALONG THE KENT SUSSEX COUNTY LINE. THIS STORM WILL MOVE EAST OVER PORTIONS OF SOUTH KENT COUNTY AND NORTH SUSSEX COUNTY DURING THE NEXT HOUR OR HOUR AND A HALF BEFORE MOVING ONTO THE LOWER DELAWARE BAY NEAR SLAUGHTER BEACH. OTHER STORMS OF LESS SEVERE NATURE WILL CONTINUE TO OCCUR OVER THE AREA FOR THE NEXT 3 TO 4 HOURS. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
What forecasters said that day
The local office's own words before this severe thunderstorm 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, Oct 18, 6:57 PM EDT, 21 minutes before
SPECIAL WEATHER STATEMENT AND WEATHER RADAR SUMMARY NATIONAL WEATHER SERVICE WILMINGTON NC 657 PM EDT THU OCT 18 1990 AT 630 THIS THURSDAY EVENING...THUNDERSTORMS WITH VERY HEAVY PRECIPITATION WERE LINING UP RAPIDLY AND INTENSIFYING FROM THE SOUTHWEST END OF PAMLICO SOUND THROUGH CAPE LOOKOUT ALONG THE ATLANTIC GULF STREAM EAST THROUGH SOUTH OF FYINGPAN SHOALS LIGHT TOWER. THE STORMS WERE MOVING RAPIDLY EAST AND NORTHEAST ABOUT 52 MILES AN HOUR. BOATERS ESPECIALLY SHOULD BE ALERT FOR STRONG GUSTY WINDS AROUND PAMLICO SOUND...CARTERET COUNTY AND ADJOINING ATLANTIC COASTAL WATERS FOR THE NEXT HOUR OR SO UNTIL THESE STORMS PASS. OTHER SHOWERS AND RAIN PATCHES WERE SCATTERED OVER EASTERN NORTH CAROLINA. THUNDERSTORMS EXTENDED FROM THE NORTHEAST PIEDMONT OF NORTH CAROLINA NEAR DURHAM NORTHEAST INTO VIRGINIA NEAR RICHMOND. ALL PRECIPITAITON WAS MOVING EAST AROUND 50 MILES AN HOUR. COVERAGE CONTINUED TO DECREASE OVER EASTERN NORTH CAROLINA.
Nearby
Severe Thunderstorm Warnings in Delaware, 1990Every severe thunderstorm 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.