Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 47, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at Apr 18, 1998, 8:38 AM EDT for Richland County, Sumter County, South Carolina. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 18, 1998, 8:38 AM EDT (12:38 UTC)
- Expired
- Apr 18, 1998, 9:15 AM EDT
- In force
- 37 min
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
Counties Richland County, SC, Sumter County, SC
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 0.6 hours before the alert went out and 133 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
- 315 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 780 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 110 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
398 WUUS1 KCAE 181239 RRA SVRCAE SCC079-085-181315- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE COLUMBIA SC 838 AM EDT SAT APR 18 1998 THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN RICHLAND COUNTY IN SOUTH CAROLINA NORTHERN SUMTER COUNTY IN SOUTH CAROLINA * UNTIL 915 AM EDT * AT 840 AM RADAR INDICATED A SEVERE THUNDERSTORM JUST NORTHEAST OF FORT JACKSON MOVING EAST-NORTHEAST AT 45 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... REMBERT AT 850 AM THIS IS A DANGEROUS STORM...TAKE COVER IMMEDIATELY IF YOU ARE IN ITS PATH. INTENSE SEVERE THUNDERSTORMS CAN CAUSE AS MUCH DAMAGE AS SOME TORNADOES. CDL
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, Apr 18, 5:42 AM EDT, 2 hours 56 minutes before
SCZ015-016-018-020-021-022-025-026-027-028-029-030-031-035- 036-037-038-041-GAZ040-063-064-065-077-181742- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE COLUMBIA SC 542 AM EDT SAT APR 18 1998 THE OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN SOUTH CAROLINA: AIKEN BAMBERG BARNWELL CALHOUN CHESTERFIELD CLARENDON EDGEFIELD FAIRFIELD KERSHAW LANCASTER LEE LEXINGTON MCCORMICK NEWBERRY ORANGEBURG RICHLAND SALUDA SUMTER THE OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN GEORGIA: BURKE COLUMBIA LINCOLN MCDUFFIE RICHMOND ...ISOLATED SEVERE THUNDERSTORMS POSSIBLE TODAY ACROSS THE MIDLANDS AND CENTRAL SAVANNAH RIVER AREA... A FRONTAL BOUNDARY WILL STALL OUT TODAY ACROSS THE REGION TODAY. THE FRONT WILL BE LOCATED FROM NEAR FLORENCE WESTWARD TO NEAR ANDERSON. THE AREA TO THE SOUTH OF THE FRONT INCLUDING THE COLUMBIA AND AUGUSTA METRO AREAS WILL REMAIN IN A WARM...MOIST AND UNSTABLE AIRMASS. SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS THE CENTRAL SAVANNAH RIVER AREA AROUND NOON. THESE STORMS WILL THEN LIFT NORTHWARD INTO THE MIDLANDS. THE MAIN THREAT FROM THE STORMS WILL BE LARGE HAIL. A FEW STORMS COULD ALSO PRODUCE WIND GUSTS TO 58 MPH. EMERGENCY PREPAREDNESS OFFICIALS ARE REQUESTED TO REMAIN ALERT AND MAKE PRELIMINARY PLANS TO DEAL WITH SEVERE WEATHER SHOULD IT OCCUR. SEVERE WEATHER SPOTTERS...INCLUDING AMATEUR RADIO OPERATORS... SHOULD MONITOR THIS WEATHER SITUATION AND RELAY REPORTS PROMPTLY TO THE NEAREST NATIONAL WEATHER SERVICE OFFICE. VAUGHAN
Special weather statement, Apr 18, 5:42 AM EDT, 2 hours 56 minutes before
SCZ015-016-018-020-021-022-025-026-027-028-029-030-031-035- 036-037-038-041-GAZ040-063-064-065-077-181742- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE COLUMBIA SC 542 AM EDT SAT APR 18 1998 THE OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN SOUTH CAROLINA: AIKEN BAMBERG BARNWELL CALHOUN CHESTERFIELD CLARENDON EDGEFIELD FAIRFIELD KERSHAW LANCASTER LEE LEXINGTON MCCORMICK NEWBERRY ORANGEBURG RICHLAND SALUDA SUMTER THE OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN GEORGIA: BURKE COLUMBIA LINCOLN MCDUFFIE RICHMOND ...ISOLATED SEVERE THUNDERSTORMS POSSIBLE TODAY ACROSS THE MIDLANDS AND CENTRAL SAVANNAH RIVER AREA... A FRONTAL BOUNDARY WILL STALL OUT TODAY ACROSS THE REGION TODAY. THE FRONT WILL BE LOCATED FROM NEAR FLORENCE WESTWARD TO NEAR ANDERSON. THE AREA TO THE SOUTH OF THE FRONT INCLUDING THE COLUMBIA AND AUGUSTA METRO AREAS WILL REMAIN IN A WARM...MOIST AND UNSTABLE AIRMASS. SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS THE CENTRAL SAVANNAH RIVER AREA AROUND NOON. THESE STORMS WILL THEN LIFT NORTHWARD INTO THE MIDLANDS. THE MAIN THREAT FROM THE STORMS WILL BE LARGE HAIL. A FEW STORMS COULD ALSO PRODUCE WIND GUSTS TO 58 MPH. EMERGENCY PREPAREDNESS OFFICIALS ARE REQUESTED TO REMAIN ALERT AND MAKE PRELIMINARY PLANS TO DEAL WITH SEVERE WEATHER SHOULD IT OCCUR. SEVERE WEATHER SPOTTERS...INCLUDING AMATEUR RADIO OPERATORS... SHOULD MONITOR THIS WEATHER SITUATION AND RELAY REPORTS PROMPTLY TO THE NEAREST NATIONAL WEATHER SERVICE OFFICE. VAUGHAN
Special weather statement, Apr 18, 8:04 AM EDT, 34 minutes before
SCZ027-028-182004- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 804 AM EDT SAT APR 18 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A SPECIAL WEATHER STATEMENT FOR LEXINGTON AND RICHLAND COUNTIES IN SOUTH CAROLINA INCLUDING THE COLUMBIA METROPOLITAN AREA. A CLUSTER OF SHOWERS AND THUNDERSTORMS IS REMAINING NEARLY STATIONARY OVER CENTRAL PORTIONS OF LEXINGTON AND RICHLAND COUNTIES IN SOUTH CAROLINA. ONE TO TWO INCHES OF RAIN HAS FALLEN SINCE 630 AM OVER THIS REGION AND CONTINUED HEAVY RAINFALL IS ANTICIPATED THROUGH 900 AM. THIS HEAVY RAINFALL WILL RESULT IN THE PONDING OF WATER IN LOW LYING AREAS AND LOCALIZED STREET FLOODING...ESPECIALLY IN FLOOD PRONE AREAS OF DOWNTOWNF COLUMBIA. CAMMARATA
Special weather statement, Apr 18, 8:04 AM EDT, 34 minutes before
SCZ027-028-182004- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 804 AM EDT SAT APR 18 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A SPECIAL WEATHER STATEMENT FOR LEXINGTON AND RICHLAND COUNTIES IN SOUTH CAROLINA INCLUDING THE COLUMBIA METROPOLITAN AREA. A CLUSTER OF SHOWERS AND THUNDERSTORMS IS REMAINING NEARLY STATIONARY OVER CENTRAL PORTIONS OF LEXINGTON AND RICHLAND COUNTIES IN SOUTH CAROLINA. ONE TO TWO INCHES OF RAIN HAS FALLEN SINCE 630 AM OVER THIS REGION AND CONTINUED HEAVY RAINFALL IS ANTICIPATED THROUGH 900 AM. THIS HEAVY RAINFALL WILL RESULT IN THE PONDING OF WATER IN LOW LYING AREAS AND LOCALIZED STREET FLOODING...ESPECIALLY IN FLOOD PRONE AREAS OF DOWNTOWNF COLUMBIA. CAMMARATA
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 1:49 AM EDT | Severe Thunderstorm Warning | CAE | Bamberg | 41 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 1998Every severe thunderstorm warning in 1998
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.