Alert archive / South Carolina / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 231, NWS Columbia, SC

October 25, 2010Bamberg County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Oct 25, 2010, 2:29 PM EDT for Bamberg County, South Carolina. It was in force for 46 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
Oct 25, 2010, 2:29 PM EDT (18:29 UTC)
Expired
Oct 25, 2010, 3:15 PM EDT
In force
46 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon

County Bamberg County, SC

The radar

The Charleston,SC radar (KCLX), 62 km from the middle of the area, began a volume at 18:32 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 25, 8:23 AM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 6.5 hours before the alert went out and 104 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.

Skew-T log-pSkew-T log-p diagram, Charleston AFB, SC at 12:00Z on 2010-10-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1764 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2010-10-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1764 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
1.0
Supercell composite
6.9

Open this sounding in Storm Lab

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 Oct 25, 1:27 PM EDT, 1 hour 2 minutes earlier.

Area forecast discussion, Oct 25, 1:27 PM EDT, 1 hour 2 minutes before
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Hazardous weather outlook, Oct 25, 12:58 PM EDT, 1 hour 31 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE COLUMBIA SC
1258 PM EDT MON OCT 25 2010

GAZ040-063>065-077-SCZ015-016-018-020>022-025>028-030-261700-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-AIKEN-
1258 PM EDT MON OCT 25 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL GEORGIA AND
CENTRAL SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SLIGHT RISK OF SEVERE THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATHER EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

SCZ029-031-035>038-041-261700-
LEE-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-BAMBERG-
1258 PM EDT MON OCT 25 2010

...SEVERE THUNDERSTORM WATCH 714 IN EFFECT UNTIL 3 PM EDT THIS
AFTERNOON...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATEHR EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED.

In the hours before

Special weather statement, Oct 25, 9:17 AM EDT, 5 hours 12 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
917 AM EDT MON OCT 25 2010

GAZ040-063>065-077-SCZ018-025-026-030-035-251430-
AIKEN-BARNWELL-BURKE-COLUMBIA-EDGEFIELD-LINCOLN-MCCORMICK-MCDUFFIE-
RICHMOND-SALUDA-
917 AM EDT MON OCT 25 2010

...STRONG THUNDERSTORMS APPROACHING THE CENTRAL SAVANNAH RIVER
AREA...

AT 915 AM NATIONAL WEATHER SERVICE RADAR SHOWED AN AREA OF SHOWERS
AND THUNDERSTORMS APPROACHING THE CENTRAL SAVANNAH RIVER AREA FROM
THE WEST. THE STORMS SHOULD REACH MUCH OF THE CENTRAL SAVANNAH RIVER
AREA BETWEEN 1000 AM AND NOON. THE LAKE THURMOND AREA WILL LIKELY BE
AFFECTED AROUND 1000 AM...AND THE AUGUSTA AREA BETWEEN 1100 AM AND
NOON.

THE THUNDERSTORMS WILL LIKELY CONTAIN FREQUENT LIGHTNING...WIND GUSTS
NEAR 40 MPH...AND HEAVY DOWNPOURS.

STRONGER THUNDERSTORMS COULD POSSIBLY OCCUR.

LISTEN FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
Special weather statement, Oct 25, 10:12 AM EDT, 4 hours 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
1012 AM EDT MON OCT 25 2010

GAZ040-063>065-077-SCZ018-025-030-035-251545-
AIKEN-BARNWELL-BURKE-COLUMBIA-EDGEFIELD-LINCOLN-MCCORMICK-MCDUFFIE-
RICHMOND-
1012 AM EDT MON OCT 25 2010

...STRONG THUNDERSTORMS MOVING INTO PARTS OF THE CENTRAL SAVANNAH
RIVER AREA...

AT 1000 AM...NATIONAL WEATHER SERVICE RADAR SHOWED AN AREA OF
SHOWERS AND THUNDERSTORMS APPROACHING THE CENTRAL SAVANNAH RIVER
AREA FROM THE WEST. THE STORMS SHOULD REACH MUCH OF THE CENTRAL
SAVANNAH RIVER AREA BEFORE 100 PM. THE LAKE THURMOND AREA WILL
LIKELY BE AFFECTED BY 1100 AM...AND THE AUGUSTA BEGINNING AROUND
NOON.

THE THUNDERSTORMS WILL LIKELY CONTAIN FREQUENT LIGHTNING...WIND GUSTS
NEAR 40 MPH...AND HEAVY DOWNPOURS.

STRONGER THUNDERSTORMS COULD POSSIBLY OCCUR.

LISTEN FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
Special weather statement, Oct 25, 10:47 AM EDT, 3 hours 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
1047 AM EDT MON OCT 25 2010

GAZ040-063>065-077-SCZ018-025-030-035-251600-
AIKEN-BARNWELL-BURKE-COLUMBIA-EDGEFIELD-LINCOLN-MCCORMICK-MCDUFFIE-
RICHMOND-
1047 AM EDT MON OCT 25 2010

...STRONG THUNDERSTORMS MOVING INTO THE CENTRAL SAVANNAH RIVER
AREA...

AT 1040 AM...NATIONAL WEATHER SERVICE RADAR SHOWED AN AREA OF
SHOWERS AND THUNDERSTORMS EXTENDING FROM THE LAKE THURMOND AREA
SOUTHWESTWARD THROUGH SPARTA. MOVEMENT WAS EASTWARD AND THESE
STORMS WILL OVERSPREAD ALL OF THE CENTRAL SAVANNAH RIVER AREA.

THE STORMS WILL LIKELY REACH THE THOMSON AREAS AROUND 1130 AM...
AND THE AUGUSTA AND WAYNESBORO AREAS AROUND NOON.

THE THUNDERSTORMS WILL LIKELY CONTAIN FREQUENT LIGHTNING...WIND GUSTS
NEAR 40 MPH...AND HEAVY DOWNPOURS.

STRONGER THUNDERSTORMS COULD POSSIBLY OCCUR.

LISTEN FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
Special weather statement, Oct 25, 11:56 AM EDT, 2 hours 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
1156 AM EDT MON OCT 25 2010

GAZ065-077-SCZ015-016-020>022-025>028-030-035>037-251645-
AIKEN-BARNWELL-BURKE-CALHOUN-CHESTERFIELD-EDGEFIELD-FAIRFIELD-
KERSHAW-LANCASTER-LEXINGTON-NEWBERRY-ORANGEBURG-RICHLAND-RICHMOND-
SALUDA-
1156 AM EDT MON OCT 25 2010

...STRONG THUNDERSTORMS AFFECTING PARTS OF CENTRAL SOUTH CAROLINA
AND THE CENTRAL SAVANNAH RIVER AREA OF GEORGIA...

AT 1150 AM WEATHER RADAR SHOWED A BAND OF SHOWERS AND THUNDERSTORMS
EXTENDING THROUGH LAKE WATEREE...LAKE MURRAY AND THE AUGUSTA AREA.
MOVEMENT WAS EASTWARD NEAR 40 MPH.

SOME OF THE THUNDERSTORMS WILL LIKELY CONTAIN WIND GUSTS NEAR 40
MPH...FREQUENT LIGHTNING...AND VERY HEAVY DOWNPOURS.

STRONGER THUNDERSTORMS MAY OCCUR. A SEVERE THUNDERSTORM WATCH IS
IN EFFECT UNTIL 100 PM.

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1...8 7
7...6 3 3...6 7 7 2.

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 25, 11:06 AM EDTSevere Thunderstorm WarningCAEColumbia, McDuffie, Richmond54 min
Oct 25, 3:01 PM EDTSevere Thunderstorm WarningCAEBurke, Richmond29 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2010Every severe thunderstorm warning in 2010

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.