Alert archive / Delaware / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 36, NWS Wilmington, NC
NWS Wilmington, NC issued this severe thunderstorm warning at Jul 5, 1990, 7:21 PM EDT for Sussex County, Delaware. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jul 5, 1990, 7:21 PM EDT (23:21 UTC)
- Expired
- Jul 5, 1990, 9:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS Wilmington, NC
- Area
- Whole counties
County 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.4 hours before the alert went out and 84 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
- 1310 J/kg
- Mixed-layer CIN
- -346 J/kg
- Mixed-layer LCL
- 1501 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KILG 052322 RRA SVRILG DEC005-060130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE WILMINGTON DE 721 PM EDT THU JUL 5 1990 THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 930 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...... IN SOUTH DELAWARE ...SOUTHERN SUSSEX COUNTY AND FOR MARINE INTERESTS FROM ...FENWICK ISLAND TO INDIAN RIVER INLET NATIONAL WEATHER SERVICE RADAR SHOWS A THUNDERSTORM NEAR SHARPTOWN MARYLAND MOVING EAST TOWARD SUSSEX COUNTY DELAWARE...THIS STORM WILL CROSS THE SOUTH THIRD OF SUSSEX DURING THE NEXT HOUR TO HOUR AND A HALF AND REACH THE ATLANTIC COAST NEAR FENWICK ISLAND. PERSON IN THE PATH OF THIS STORM SHOULD BE ALERT AND BE PREPARED TO SEEK A SAFE SHELTER AS THE STORM MOVES INTO YOUR AREA. THIS STORM WILL CONTAIN DANGEROUS LIGHTNING...EXTREMELY HEAVY RAIN AND POSSIBLE WIND GUST TO OVER 50 MPH ALSO HAIL IS POSSIBLE. SOME LOCAL STREET AND HIGHWAY FLOODING IS LIKELY WITH THIS STORM. MOTORIST SHOULD USE EXTREME CAUTION. BOATERS ALONG THE ATLANTIC COAST SOUTH OF INDIAN RIVER INLET SHOULD BE ALERT FOR AND AVOID THIS STORM. 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. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUIL<DING BUT STAY AWAY FROM WINDOWS. CKD
The office that day
Everything else NWS Wilmington, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 4:42 PM EDT | Severe Thunderstorm Warning | ILM | Kent, New Castle | 2 hr |
| Jul 5, 5:07 PM EDT | Flash Flood Warning | ILM | New Castle | 2 hr |
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.