Alert archive / South Carolina / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 4, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at Feb 21, 2005, 5:11 PM EST for Barnwell County, South Carolina. It was in force for 34 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
- Feb 21, 2005, 5:11 PM EST (22:11 UTC)
- Expired
- Feb 21, 2005, 5:45 PM EST
- In force
- 34 min
- Issued by
- NWS Columbia, SC
- Area
- Counties, with a storm outline in the text
County Barnwell County, SC
The radar
The Charleston,SC radar (KCLX), 77 km from the middle of the area, began a volume at 22:13 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 10.2 hours before the alert went out and 140 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 671 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
NWS Columbia, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 21, 2:35 PM EST, 2 hours 36 minutes earlier.
Area forecast discussion, Feb 21, 2:35 PM EST, 2 hours 36 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE COLUMBIA SC 235 PM EST MON FEB 21 2005 .SHORT TERM (TONIGHT THROUGH WEDNESDAY)... ELEVATED CONVECTION MOVING INTO THE AREA THIS AFTERNOON. BEST CHANCE FOR CONVECTION STILL LOOKS LIKE BEFORE 7 PM. CURRENTLY SEEING A GOOD BIT OF LIGHTNING WITH LINE OF STORMS CROSSING INTO OUR CWA. WILL LEAVE CHANCE POPS FOR THE OVERNIGHT. WAVE DEVELOPING ON FRONT, SO WILL CROSS THE AREA SLOWLY TUESDAY INTO TUESDAY NIGHT. MILD TEMPS TONIGHT AND TUESDAY MODERATING TO NEAR NORMAL BY WEDNESDAY. SURFACE FRONT PUSHES SOUTH OF THE AREA BY WEDNESDAY. PLAN TO KEEP A CHANCE OF SHOWERS INTO TUESDAY MORNING. DRY WEDNESDAY AS HIGH PRESSURE BUILDS IN FROM THE NORTH. UPPER FLOW REMAIN ZONAL THROUGH WEDNESDAY WITH SIGNIFICANT SHORT WAVES REMAINING TO THE NORTH AND SOUTH OF THE AREA. && .LONG TERM (WEDNESDAY NIGHT THROUGH MONDAY)... ZONAL UPPER FLOW BECOMES MORE AMPLIFIED BY THE WEEKS END AS A RIDGE BUILDS ACROSS THE ROCKIES AND A TROUGH CROSSES THE GREAT LAKES TO THE NORTHEAST. TIMING DIFFERENCES BETWEEN GFS AND NAM IN BRINGING SOUTHERN SYSTEM INTO THE AREA. GFS FASTER WITH PRECIP MOVING IN WEDNESDAY NIGHT WHILE NAM SPREADS RAIN BACK INTO THE AREA DURING THE DAY THURSDAY. WILL KEEP POPS FOR THURSDAY INTO THURSDAY NIGHT THEN DRY FRIDAY AND SATURDAY. TEMPS SLIGHTLY BELOW NORMAL. MAY SEE A WEDGE SCENARIO DEVELOPING SUNDAY AND MONDAY WITH OVERRUNNING RAIN RETURNING. WILL INTRODUCE LOW CHANCE POPS FOR SUNDAY THROUGH MONDAY. && .AVIATION... LOW LEVEL BOUNDARY RECENTLY SLIPPED SOUTH THROUGH CAE...RESULTING IN LOWER VISIBILITIES AND CEILINGS. WILL CONCENTRATE ON SHORT TERM THREAT INVOLVING TWO AREAS OF CONVECTION TO OUR NORTHWEST...MOVING TO THE EAST SOUTHEAST. FIRST BAND OF THUNDERSTORMS STRETCHING ACROSS NORTHERN GA...AND INTO UPSTATE SC ALONG A SURFACE BOUNDARY. OTHER BAND OF THUNDERSTORMS STARTED IN OK/AR EARLY THIS MORNING...TRAVELLED ACROSS TN THIS MORNING...AND IS NOW ACROSS WESTERN NC INTO NORTHERN GA. WILL USE RADAR LOOP EXTRAPOLATION TO PROVIDE A TIMING OF TSRA INTO CAE AND AGS VCNTY LATER THIS AFTERNOON INTO THIS EVENING...USING A 20 TO 24Z TEMPO GROUP. SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 700 PM...THAT INCLUDES CAE AND AGS. && .CAE WATCHES/WARNINGS/ADVISORIES... SC...NONE. GA...NONE. && PUBLIC: LM AVIATION: DM
Hazardous weather outlook, Feb 21, 4:57 AM EST, 12 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE COLUMBIA SC 457 AM EST MON FEB 21 2005 GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-221000- AIKEN SC-BAMBERG SC-BARNWELL SC-BURKE GA-CALHOUN SC-CHESTERFIELD SC- CLARENDON SC-COLUMBIA GA-EDGEFIELD SC-FAIRFIELD SC-KERSHAW SC- LANCASTER SC-LEE SC-LEXINGTON SC-LINCOLN GA-MCCORMICK SC-MCDUFFIE GA- NEWBERRY SC-ORANGEBURG SC-RICHLAND SC-RICHMOND GA-SALUDA SC- SUMTER SC- 457 AM EST MON FEB 21 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MIDLANDS OF SOUTH CAROLINA AND THE CENTRAL SAVANNAH RIVER AREA OF GEORGIA. .DAY ONE... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
In the hours before
Special weather statement, Feb 21, 2:19 PM EST, 2 hours 52 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 219 PM EST MON FEB 21 2005 GAZ040-063>065-SCZ015-018-020>022-025>028-030-212100- AIKEN SC-COLUMBIA GA-EDGEFIELD SC-FAIRFIELD SC-KERSHAW SC- LANCASTER SC-LEXINGTON SC-LINCOLN GA-MCCORMICK SC-MCDUFFIE GA- NEWBERRY SC-RICHLAND SC-RICHMOND GA-SALUDA SC- INCLUDING THE CITIES OF...AIKEN...AUGUSTA...BATESBURG...BELVEDERE... CAMDEN...CAYCE...CLEARWATER...COLUMBIA...DENTSVILLE...EVANS... FOREST ACRES...FORT GORDON...GROVETOWN...IRMO...LANCASTER... LEXINGTON...MARTINEZ...NEWBERRY...NORTH AUGUSTA...OAK GROVE... RED BANK...SPRINGDALE...ST. ANDREWS...THOMSON...WEST COLUMBIA... WINNSBORO AND WOODFIELDS 219 PM EST MON FEB 21 2005 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 700 PM FOR NORTHERN AND CENTRAL PORTIONS OF GEORGIA AND SOUTH CAROLINA. BY 300 PM...A BAND OF STRONG THUNDERSTORMS WILL MOVE TO THE SOUTHEAST INTO THE VICINITIES OF NEWBERRY...LAKE MURRAY...SALUDA... EDGEFIELD...MCCORMICK...CLARKS HILL LAKE...AND LINCOLNTON. THESE THUNDERSTORMS WILL PRODUCE FREQUENT LIGHTNING...HEAVY DOWNPOURS...WIND GUSTS UP TO 50 MPH...AND POSSIBLY SMALL HAIL. BETWEEN 400 AND 500 PM...THE ACTIVITY WILL REACH THE GREATER COLUMBIA AND LEXINGTON METROPOLITAN AREA...AS WELL AS THE AUGUSTA AND AIKEN VICINITY. BOATERS SHOULD SEEK SAFE HARBOR. RESIDENTS SHOULD TAKE COVER INDOORS TO AVOID LIGHTNING. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES.
Special weather statement, Feb 21, 3:20 PM EST, 1 hour 51 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 320 PM EST MON FEB 21 2005 GAZ040-063>065-SCZ015-018-020>022-025>028-030-212130- AIKEN SC-COLUMBIA GA-EDGEFIELD SC-FAIRFIELD SC-KERSHAW SC- LANCASTER SC-LEXINGTON SC-LINCOLN GA-MCCORMICK SC-MCDUFFIE GA- NEWBERRY SC-RICHLAND SC-RICHMOND GA-SALUDA SC- INCLUDING THE CITIES OF...AIKEN...AUGUSTA...BATESBURG...BELVEDERE... CAMDEN...CAYCE...CLEARWATER...COLUMBIA...DENTSVILLE...EVANS... FOREST ACRES...FORT GORDON...GROVETOWN...IRMO...LANCASTER... LEXINGTON...MARTINEZ...NEWBERRY...NORTH AUGUSTA...OAK GROVE... RED BANK...SPRINGDALE...ST. ANDREWS...THOMSON...WEST COLUMBIA... WINNSBORO AND WOODFIELDS 320 PM EST MON FEB 21 2005 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 700 PM FOR NORTHERN AND CENTRAL PORTIONS OF GEORGIA AND SOUTH CAROLINA. BETWEEN 330 AND 430 PM...A BAND OF STRONG THUNDERSTORMS WILL MOVE TO THE SOUTHEAST ACROSS THE VICINITIES OF LAKE MURRAY AND THE GREATER COLUMBIA AND LEXINGTON METROPOLITAN AREA. OTHER THUNDERSTORMS WILL AFFECT THE VICINITIES OF THOMPSON... APPLING...CLARKS HILL LAKE...AND EDGEFIELD...AS WELL AS NORTHERN PORTIONS OF THE GREATER AUGUSTA AND AIKEN METROPOLITAN AREA. THESE THUNDERSTORMS WILL PRODUCE FREQUENT LIGHTNING...HEAVY DOWNPOURS... WIND GUSTS UP TO 50 MPH...AND POSSIBLY SMALL HAIL. BOATERS SHOULD SEEK SAFE HARBOR. RESIDENTS SHOULD TAKE COVER INDOORS TO AVOID LIGHTNING. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES.
Special weather statement, Feb 21, 4:15 PM EST, 56 minutes before
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</html>Special weather statement, Feb 21, 5:09 PM EST, 2 minutes before
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Severe Thunderstorm Warnings in South Carolina, 2005Every severe thunderstorm warning in 2005
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; radar from the NEXRAD Level II archive.