Alert archive / South Carolina / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 13, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at May 27, 1990, 8:17 PM EDT for Orangeburg County, South Carolina. It was in force for 58 min.
The area
The counties it named.
The facts
- Issued
- May 27, 1990, 8:17 PM EDT (00:17 UTC)
- Expired
- May 27, 1990, 9:15 PM EDT
- In force
- 58 min
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
County Orangeburg 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 00:00Z, 0.3 hours before the alert went out and 96 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
- 581 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 960 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- -2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCAE 280016 SVRCAE SCC075-280115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE COLUMBIA SC 817 PM EDT SUN MAY 27 1990 THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CAROLINA ...ORANGEBURG COUNTY AT 817 PM EDT RADAR INDICATED A SEVERE THUNDERSTORM 15 MILES WEST OF ORANGEBURG. THIS THUNDERSTORM WAS MOVING EAST AT 25 MPH. 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. ZIMMERMAN
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 27, 5:41 PM EDT, 2 hours 36 minutes before
SCZ005>008-272300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 542 PM EDT SUN MAY 27 1990 ...STRONG THUNDERSTORMS MOVING ACROSS SOUTH CAROLINA MIDLANDS... AT 538 PM EDT AN AREA OF STRONG THUNDERSTORMS EXTENDED FROM 15 MILES EAST OF SUMTER TO 10 MILES SOUTHEAST OF ORANGEBURG TO NEAR ALLENDALE. THIS AREA OF THUNDERSTORMS WAS MOVING EAST AT 30 MPH. THESE THUNDERSTORMS WILL PRODUCE BRIEF HEAVY RAIN AND DANGEROUS LIGHTNING AS THEY MOVE OUT OF THE MIDLANDS AND INTO THE COASTAL AREA. STRONG GUSTY WINDS AND SOME HAIL IS ALSO POSSIBLE WITH THESE THUNDERSTORMS. BY 615 PM EDT THIS AREA OF THUNDERSTORMS WILL EXTEND FROM NEAR LAKE CITY THROUGH ST. GEORGE TO NEAR HAMPTON. ZIMMERMAN
Special weather statement, May 27, 8:06 PM EDT, 11 minutes before
SCZ006-280100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 807 PM EDT SUN MAY 27 1990 ...STRONG THUNDERSTORM MOVING ACROSS SOUTH MIDLANDS OF SOUTH CAROLINA... AT 804 PM EDT A STRONG THUNDERSTORM WAS LOCATED 20 MILES WEST OF ORANGEBURG IN WESTERN ORANGEBURG COUNTY. THIS THUNDERSTORM WAS MOVING EAST AT 25 MPH. THIS THUNDERSTORM WILL PRODUCE BRIEF HEAVY RAIN AND DANGEROUS LIGHTNING AS IT MOVES ACROSS ORANGEBURG COUNTY. STRONG GUSTY WINDS AND SMALL HAIL ARE ALSO POSSIBLE WITH THIS THUNDERSTORM. BY 900 PM EDT THIS THUNDERSTORM WILL BE JUST EAST OF THE CITY OF ORANGEBURG. ZIMMERMAN
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 2:31 PM EDT | Severe Thunderstorm Warning | CAE | Orangeburg | 59 min |
| May 28, 2:42 PM EDT | Severe Thunderstorm Warning | CAE | Sumter | 63 min |
| May 28, 3:06 PM EDT | Severe Thunderstorm Warning | CAE | Clarendon | 69 min |
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.