Alert archive / South Carolina / Flash Flood Warnings in 2005

Flash Flood Warning 1, NWS Columbia, SC

May 10, 2005Lexington County, South Carolina

NWS Columbia, SC issued this flash flood warning at May 10, 2005, 5:14 PM EDT for Lexington County, South Carolina. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 10, 2005, 5:14 PM EDT (21:14 UTC)
Expired: May 10, 2005, 7:15 PM EDT
In force: 2 hr
Issued by: NWS Columbia, SC
Area: Counties, with a storm outline in the text

County Lexington County, SC

The radar

The Columbia radar (KCAE), 15 km from the middle of the area, began a volume at 21:15 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, 9.2 hours before the alert went out and 162 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 171 J/kg
Mixed-layer CIN: -156 J/kg
Mixed-layer LCL: 1414 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: 11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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.

NWS Columbia, SC wrote its last area forecast discussion before this flash flood warning went out at May 10, 2:40 PM EDT, 2 hours 34 minutes earlier.

Area forecast discussion, May 10, 2:40 PM EDT, 2 hours 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
240 PM EDT TUE MAY 10 2005

.SHORT TERM (TONIGHT THROUGH WEDNESDAY)...
WEAK UPPER TROUGH SWINGING ACROSS N GA THIS AFTERNOON WITH
CONVECTIVE ACTIVITY DEVELOPING ACROSS NE GA/WESTERN CAROLINAS
AHEAD OF TROUGH. LOW LEVEL SHEAR IS WEAK BUT WITH LOW WET BULB
ZERO AND 500MB TEMPS AROUND -15 C...LARGE HAIL IS A POSSIBILITY
THIS AFTERNOON INTO THIS EVENING. WILL KEEP CHANCE POPS INTO THIS
EVENING. UPPER TROUGH MOVES SOUTHEASTWARD TO NEAR GA COAST BY
WEDNESDAY MORNING. WITH SOME PVA STILL OVER THE CWA WEDNESDAY WILL
KEEP SLIGHT CHANCE POP.

&&

.LONG TERM (WEDNESDAY NIGHT THROUGH TUESDAY)...
UPPER RIDGE BUILDS OVER AREA WEDNESDAY NIGHT THROUGH THURSDAY.
HOWEVER QUESTION REMAINS HOW FAR SOUTH BACK DOOR FRONT WILL
VENTURE ON FRI. GFS KEEPS FRONT MAINLY NORTH OF CWA WHILE NAM PUSHES
FRONT WELL INTO SC. FOR NOW WILL COMPROMISE AND ADVERTISE SLIGHT
CHANCE POP. FRONT SHOULD WASH OUT BY EARLY SATURDAY AS HIGH
PRESSURE BUILDS IN FROM THE ATLANTIC. SATURDAY LOOKS DRY. SLOW
MOVING COLD FRONT WILL APPROACH FROM THE WEST SUNDAY INTO EARLY
MONDAY SO WILL GO WITH LOW CHANCE POPS. FRONT SHOULD MOVE OFFSHORE
TUESDAY.

&&

.AVIATION...
GENERALLY VFR CONDITIONS OVER THE AREA THROUGH THE AFTERNOON TO
MIDNIGHT...BUT STRONG SHORTWAVE AND UNSTABLE AIR WILL TRIGGER
SCATTERED CONVECTION THROUGH THE EARLY EVENING. EXPECT BRIEF MVFR
CONDITIONS IN THE SHOWERS/THUNDERSTORMS. DURING THE PREDAWN
HOURS...ETA FORECAST SOUNDING SHOW CONSIDERABLE LOW LEVEL MOISTURE
TO FAVOR IFR CEILINGS AND PATCHY FOG WITH VISIBILITIES 3 TO 5 MILES.
CONDITIONS SHOULD IMPROVE TO VFR BY LATE MORNING.
&&

.CAE WATCHES/WARNINGS/ADVISORIES...
SC...NONE.
GA...NONE.
&&

22/25

Hazardous weather outlook, May 10, 6:00 AM EDT, 11 hours 14 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
600 AM EDT TUE MAY 10 2005

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-
111015-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
600 AM EDT TUE MAY 10 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MIDLANDS OF SOUTH
CAROLINA AND THE CENTRAL SAVANNAH RIVER AREA..

.DAY ONE...TODAY AND TONIGHT
AN APPROACHING UPPER LEVEL DISTURBANCE WILL COMBINE WITH AFTERNOON
HEATING AND AN UNSTABLE AIRMASS TO PRODUCE SCATTERED SHOWERS AND
THUNDERSTORMS. A FEW STORMS COULD BECOME SEVERE THIS AFTERNOON WITH
HAIL THE PRIMARY THREAT. FOR ADDITIONAL INFORMATION PLEASE SEE
CAESPSCAE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

NO HAZARDOUS WEATHER EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON.

In the hours before

Local storm report, May 10, 3:51 PM EDT, 1 hour 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
351 PM EDT TUE MAY 10 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0335 PM     HAIL             LEESVILLE               33.92N 81.51W
05/10/2005  1.75 INCH        LEXINGTON          SC   TRAINED SPOTTER

            QUARTER TO GOLF BALL SIZE HAIL.

&&

BLP

Local storm report, May 10, 3:55 PM EDT, 1 hour 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
355 PM EDT TUE MAY 10 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 PM     HAIL             6 NW MCCORMICK          33.97N 82.37W
05/10/2005  1.00 INCH        MCCORMICK          SC   EMERGENCY MNGR

            PENNY TO QUARTER SIZE HAIL MCCORMICK TO 6 NW OF MCCORMICK

&&

BLP

Local storm report, May 10, 4:12 PM EDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
412 PM EDT TUE MAY 10 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0402 PM     HAIL             10 W AUGUSTA            33.46N 82.17W
05/10/2005  0.88 INCH        COLUMBIA           GA   EMERGENCY MNGR

            NICKEL SIZE HAIL REPORTED IN APPLING

&&

BC

Local storm report, May 10, 4:22 PM EDT, 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
422 PM EDT TUE MAY 10 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0415 PM     HAIL             EVANS                   33.51N 82.15W
05/10/2005  0.75 INCH        COLUMBIA           GA   EMERGENCY MNGR

            PENNY SIZE HAIL REPORTED NEAR EVANS

&&

BC

Local storm report, May 10, 4:44 PM EDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
444 PM EDT TUE MAY 10 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0439 PM     HAIL             MARTINEZ                33.52N 82.09W
05/10/2005  0.88 INCH        COLUMBIA           GA   PUBLIC

            NICKEL SIZE HAIL REPORTED IN MARTINEZ

&&

BC

Local storm report, May 10, 5:12 PM EDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
512 PM EDT TUE MAY 10 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0435 PM     HAIL             6 W PELION              33.78N 81.35W
05/10/2005  0.88 INCH        LEXINGTON          SC   UTILITY COMPANY

            NICKEL SIZE HAIL NEAR FAIR VIEW CROSSROADS.

0452 PM     HAIL             3 NE NORTH AUGUSTA      33.55N 81.92W
05/10/2005  0.88 INCH        AIKEN              SC   BROADCAST MEDIA

            NICKEL SIZE HAIL REPORTED BY LOCAL SPOTTER FOR LOCAL TV
            STATION NEAR BELVEDERE

&&

BC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 2:25 PM EDT	Severe Thunderstorm Warning	CAE	Newberry, Saluda	50 min
May 10, 3:15 PM EDT	Severe Thunderstorm Warning	CAE	Saluda	30 min
May 10, 3:22 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw	38 min
May 10, 3:25 PM EDT	Severe Thunderstorm Warning	CAE	Richland	35 min
May 10, 3:34 PM EDT	Severe Thunderstorm Warning	CAE	Lexington	41 min
May 10, 3:38 PM EDT	Severe Thunderstorm Warning	CAE	McCormick	52 min
May 10, 4:06 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield	39 min
May 10, 4:16 PM EDT	Severe Thunderstorm Warning	CAE	Lexington	44 min
May 10, 4:42 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Edgefield	48 min
May 10, 4:44 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw	46 min
May 10, 4:52 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield	23 min
May 10, 4:56 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lancaster	49 min
May 10, 5:17 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	43 min
May 10, 5:19 PM EDT	Severe Thunderstorm Warning	CAE	Saluda	41 min
May 10, 5:30 PM EDT	Flash Flood Warning	CAE	Chesterfield	90 min
May 10, 5:37 PM EDT	Severe Thunderstorm Warning	CAE	Orangeburg	38 min
May 10, 5:41 PM EDT	Severe Thunderstorm Warning	CAE	Aiken	64 min
May 10, 5:44 PM EDT	Severe Thunderstorm Warning	CAE	Lee	46 min
May 10, 5:47 PM EDT	Severe Thunderstorm Warning	CAE	Barnwell	43 min
May 10, 6:09 PM EDT	Severe Thunderstorm Warning	CAE	Orangeburg	51 min
May 10, 6:45 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg	30 min
May 10, 3:54 PM EDT	Severe Thunderstorm Warning	CAE	Columbia	36 min
May 10, 4:19 PM EDT	Severe Thunderstorm Warning	CAE	McDuffie	41 min
May 10, 4:31 PM EDT	Severe Thunderstorm Warning	CAE	Columbia	29 min
May 10, 4:37 PM EDT	Severe Thunderstorm Warning	CAE	Richmond	38 min

Nearby

Flash Flood Warnings in South Carolina, 2005 Every flash flood 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.