Alert archive / South Carolina / Flash Flood Warnings in 1990
Flash Flood Warning 4, NWS Columbia, SC
NWS Columbia, SC issued this flash flood warning at Oct 10, 1990, 9:45 PM EDT for Bamberg County, Orangeburg County, South Carolina. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Oct 10, 1990, 9:45 PM EDT (01:45 UTC)
- Expired
- Oct 11, 1990, 3:45 AM EDT
- In force
- 6 hr
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
Counties Bamberg County, SC, 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, 1.8 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
- 1733 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 550 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 254 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 8.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCAE 110207 COR FFWCAE SCC009-017-055-057-075-079-085-110745- BULLETIN - EBS ACTIVATION REQUESTED .... CORRECTION FLASH FLOOD WARNING NATIONAL WEATHER SERVICE COLUMBIA SC 1005 PM EDT WED OCT 10 1990 THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 345 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CAROLINA ...BAMBERG COUNTY...CALHOUN COUNTY...KERSHAW COUNTY...LANCASTER COU ...ORANGEBURG COUNTY...RICHLAND COUNTY...SUMTER COUNTY AT 930 PM EDT THUNDERSTORMS...MANY PRODUCING VERY HEAVY RAIN...CONTINUE TO REDEVELOP AND MOVE NORTH ACROSS THE WARNING AREA. A ANOTHER AREA OF STRONG THUNDERSTORMS AND VERY HEAVY RAINFALL WAS LOCATED ALONG THE SAVANNAH RIVER AND WILL BE MOVING INTO BAMBERG AND ORANGEBURG COUNTIES DURING THE FEW HOURS...THEN THE STROMS WILL CONTINUE MOVING NORTHWARD ACROSS THE WARNING AREA. THE STRONG THUNDERSTORMS WILL PRODUCE RAINFALL AMOUNTS OF 4 TO 6 ADDITIONAL INCHES DURING THE NEXT 6 HOURS. AT 940 PM EDT ORANGEBURG COUNTY EPD REPORTED THAT 12 HOUSES HAVE BEEN EVACUATED. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. 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. CDL
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, Oct 10, 5:52 PM EDT, 3 hours 53 minutes before
SCZ003-004-005-006-102200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 545 PM EDT THU OCT 4 1990 ...STRONG THUNDERSTORMS CONTINUE OVER THE MIDLANDS OF SOUTH CAROLINA... AT 530 PM EDT RADAR INDICATED AN AREA OF THUNDERSTORMS...SOME PRODUCING VERY HEAVY RAIN OVER THE SOUTH MIDLANDS. THE STRONGEST THUNDERSTORMS WERE LOCATED IN BAMBERG...ORANGEBURG...CALHOUN AND SUMTER COUNTIES. THESE THUNDERSTORMS WERE MOVING TO THE NORTH AT 20 MPH. THESE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN...FREQUENT LIGHTNING AND GUSTY WINDS AS THEY PASS. RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN 3 HOURS ARE POSSIBLE AND WILL CAUSE FLOODING OF ROADS ...UNDERPASSES AND LOW LYING AREAS. Y THESE THUNDERSTORMS WILL BE MOVING INTO EASTERN RICHLAND...SUMTER...LEE ...KERSHAW AND LANCASTER COUNTIES DURING THE NEXT FEW HOURS. ELSEWHERE ACROSS THE PIEDMONTS AND MIDLANDS OF SOUTH CAROLINA LIGHT RAIN WAS OCCURRING. CDL
Special weather statement, Oct 10, 5:55 PM EDT, 3 hours 50 minutes before
SCZ003-004-005-006-102200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 545 PM EDT THU OCT 4 1990 ...STRONG THUNDERSTORMS CONTINUE OVER THE MIDLANDS OF SOUTH CAROLINA... AT 530 PM EDT RADAR INDICATED AN AREA OF THUNDERSTORMS...SOME PRODUCING VERY HEAVY RAIN OVER THE SOUTH MIDLANDS. THE STRONGEST THUNDERSTORMS WERE LOCATED IN BAMBERG...ORANGEBURG...CALHOUN AND SUMTER COUNTIES. THESE THUNDERSTORMS WERE MOVING TO THE NORTH AT 20 MPH. THESE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN...FREQUENT LIGHTNING AND GUSTY WINDS AS THEY PASS. RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN 3 HOURS AND WILL CAUSE FLOODING OF ROADS...UNDERPASSES AND LOW LYING AREAS. THESE THUNDERST\ORMS WILL BE MOVING INTO EASTERN RICHLAND...SUMTER...LEE ...KERSHAW AND LANCASTER COUNTIES DURING THE NEXT FEW HOURS. ELSEWHERE ACROSS THE PIEDMONTS AND MIDLANDS OF SOUTH CAROLINA LIGHT RAIN WAS OCCURRING. CDL
Special weather statement, Oct 10, 6:04 PM EDT, 3 hours 41 minutes before
SCZ003-004-005-006-102200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 602 PM EDT WED OCT 10 1990 ...STRONG THUNDERSTORMS CONTINUE OVER THE MIDLANDS OF SOUTH CAROLINA... AT 530 PM EDT RADAR INDICATED AN AREA OF THUNDERSTORMS...SOME PRODUCING VERY HEAVY RAIN OVER THE SOUTH MIDLANDS. THE STRONGEST THUNDERSTORMS WERE LOCATED IN BAMBERG...ORANGEBURG...CALHOUN AND SUMTER COUNTIES. THESE THUNDERSTORMS WERE MOVING TO THE NORTH AT 20 MPH. THESE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN...FREQUENT LIGHTNING AND GUSTY WINDS AS THEY PASS. RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN 3 HOURS AND WILL CAUSE FLOODING OF ROADS...UNDERPASSES AND LOW LYING AREAS. THESE THUNbDERSTORMS WILL BE MOVING INTO EASTERN RICHLAND...SUMTER...LEE ...KERSHAW AND LANCASTER COUNTIES DURING THE NEXT FEW HOURS. ELSEWHERE ACROSS THE PIEDMONTS AND MIDLANDS OF SOUTH CAROLINA LIGHT RAIN WAS OCCURRING. CDL
Special weather statement, Oct 10, 8:48 PM EDT, 57 minutes before
GAZ007-SCZ004-006-110200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUGUSTA GA 845 PM EDT WED OCT 10 1990 ...RAIN HEAVY AT TIMES CONTINUES OVER CENTRAL SAVANNAH RIVER AREA... AT 830 PM EDT NATIONAL WEATHER SERVICE RADARS SHOW RAIN WITH EMBEDDED HEAVIER THUNDERSTORMS OVER EASTERN GEORGIA AND WESTERN SOUTH CAROLINA. A THUNDERSTORM WITH HEAVY RAINFALL IS LOCATED SOUTH OF MILLEN GEORGIA MOVING TO THE NORTH AT 25 MPH. RAINFALL IN THE PAST SIX HOURS AT BUSH FIELD IN AUGUSTA HAS MEASURED JUST OVER TWO INCHES. LOCALLY HEAVY RAINFALL IS INDICATED TO CONTINUE ACROSS THE CENTRAL SAVANNAH RIVER AREA TONIGHT AND THURSDAY. RESIDENTS SHOULD REMAIN ALERT AND SEEK SHELTER SHOULD FLOODING OCCUR IN YOUR LOCALITY. LISTEN TO NOAA WEATHER RADIO FOR LATER STATEMENTS.
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 10, 9:45 PM EDT | Flash Flood Warning | CAE | Kershaw, Lancaster, Richland, Sumter | 6 hr |
| Oct 10, 9:45 PM EDT | Flash Flood Warning | CAE | Calhoun | 6 hr |
| Oct 11, 11:41 AM EDT | Flash Flood Warning | CAE | Kershaw, Lee, Sumter | 3 hr |
| Oct 11, 11:41 AM EDT | Flash Flood Warning | CAE | Clarendon | 3 hr |
| Oct 11, 1:07 PM EDT | Flash Flood Warning | CAE | Calhoun, Richland | 3 hr |
| Oct 11, 2:22 PM EDT | Flash Flood Warning | CAE | Clarendon, Kershaw, Lee, Sumter | 4 hr |
| Oct 11, 2:22 PM EDT | Flash Flood Warning | CAE | Lancaster | 4 hr |
| Oct 11, 3:43 PM EDT | Flash Flood Warning | CAE | Calhoun, Richland | 3 hr |
Nearby
Flash Flood Warnings in South Carolina, 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.