Alert archive / South Carolina / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 9, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at May 17, 1990, 3:00 PM EDT for Lexington County, South Carolina. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- May 17, 1990, 3:00 PM EDT (19:00 UTC)
- Expired
- May 17, 1990, 4:00 PM EDT
- In force
- 60 min
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
County Lexington County, SC
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
Charleston AFB, SC (KCHS), launched 12:00Z, 7.0 hours before the alert went out and 162 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
- 1008 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 932 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 62 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 KCAE 171900 SVRCAE SCC063-172000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE COLUMBIA SC 300 PM EDT THU MAY 17 1990 THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 400 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CAROLINA ...LEXINGTON COUNTY WEATHER RADAR AT 2:55 PM EDT INDICATED A SEVERE THUNDERSTORM ABOUT 20 MILES WEST SOUTHWEST OF COLUMBIA SOUTH CAROLINA MOVING EASTWARD AT 35 TO 40 MPH. 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, May 17, 1:13 PM EDT, 1 hour 47 minutes before
SCZ003>006-171800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 110 PM EDT THU MAY 17 1990 ..A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF SOUTH CAROLINA UNTIL 9 PM EDT.. NATIONAL WEATHER SERVICE RADAR AT 1 PM EDT SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS FROM JUST SOUTH OF CHARLOTTE NORTH CAROLINA TO ABBEVILLE COUNTY IN SOUTH CAROLINA. THESE STORMS WERE MOVING TOWARD THE SOUTHEAST AT ABOUT 25 MPH. THE STRONGEST OF THESE STORMS WERE MOVING TOWARD NEWBERRY..CHESTERFIELD..AND FAIRFIELD COUNTIES AND WILL LIKELY BE AFFECTING PORTIONS OF THE MIDLANDS AND EASTERN PIEDMONT OF SOUTH CAROLINA WITHIN THE NEXT COUPLE OF HOURS. THESE STORMS HAVE THE POTENTIAL TO BECOME TSEVERE WITH STRONG AND DAMAGING WINDS AND POSSIBLE HAIL. INTERESTS THROUGHOUT THE WATCH AREA SHOULD REMAIN ALERT AND BE PREPARED TO TAKE QUICK ACTION IF THREATENING WEATHER IS SIGHTED OR A WARNING IS ISSUED. BLP
Special weather statement, May 17, 2:16 PM EDT, 44 minutes before
SCZ003>006-171900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 210 PM EDT THU MAY 17 1990 ..A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF SOUTH CAROLINA UNTIL 9 PM EDT.. NATIONAL WEATHER SERVICE RADAR AT 2 PM EDT SHOWED SCATTERED THUNDERSTORMS OVER NORTHWEST NEWBERRY COUNTY AND NORTHERN FAIRFIELD COUNTY. THESE STORMS WERE GENERALLY MOVING TOWARD THE EAST AT 25 TO 30 MPH. A CHECK WITH LAW ENFORCEMENT OFFICIALS AND SEVERE WEATHER SPOTTERS IN THESE AREAS REVEALED NO KNOWN SEVERE WEATHER AT THIS TIME ALTHOUGH HEAVY RAIN WAS NOTED IN FAIRFIELD COUNTY. THESE STORMS STILL HAVE THE POTENTIAL TO BECOME SEVERE WITH STRONG AND DAMAGING WINDS AND POSSIBLE HAIL. INTERESTS THROUGHOUT THE WATCH AREA SHOULD REMAIN ALERT AND BE PREPARED TO TAKE QUICK ACTION IF A THREATENING WEATHER IS SIGHTED OR A WARNING IS ISSUED. IF YOU KNOW OF ANY SEVERE WEATHER IN YOUR AREA..CONTACT YOUR LOCAL LAW ENFORCEMENT OR EMERGENCY MANAGEMENT OFFICE AND ASK THEM TO RELAY THE INFORMATION TO THE NATIONAL WEATHER SERVICE. BLP
Nearby
Severe Thunderstorm Warnings in South Carolina, 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.