Alert archive / South Carolina / Flash Flood Warnings in 2005

Flash Flood Warning 2, NWS Columbia, SC

May 10, 2005Chesterfield County, South Carolina

NWS Columbia, SC issued this flash flood warning at May 10, 2005, 5:30 PM EDT for Chesterfield County, South Carolina. It was in force for 90 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 10, 2005, 5:30 PM EDT (21:30 UTC)
Expired: May 10, 2005, 7:00 PM EDT
In force: 90 min
Issued by: NWS Columbia, SC
Area: Counties, with a storm outline in the text

County Chesterfield County, SC

The radar

The Columbia radar (KCAE), 113 km from the middle of the area, began a volume at 21:32 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.5 hours before the alert went out and 152 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1625 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS52 KCAE 102131
FFWCAE
SCC025-102300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
530 PM EDT TUE MAY 10 2005

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHESTERFIELD COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 700 PM EDT

* AT 526 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  FLASH FLOODING FROM A THUNDERSTORM OVER NORTHWEST CHESTERFIELD     
  COUNTY.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PAGELAND.

RAINFALL AMOUNTS OF 2 TO 4 INCHES HAVE OCCURRED.  EXCESSIVE RUNOFF 
FROM MORE HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND 
STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND 
FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING 
AREAS ARE SUBJECT TO FLOODING.

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 800 7 7
5 7 1 9 9.

LAT...LON 3481 8056 3465 8034 3481 8019 3482 8041

$$

SJN

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 50 minutes earlier.

Area forecast discussion, May 10, 2:40 PM EDT, 2 hours 50 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 30 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, 5:12 PM EDT, 18 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

Local storm report, May 10, 5:16 PM EDT, 14 minutes before

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

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

0440 PM     HAIL             EVANS                   33.51N 82.15W
05/10/2005  0.50 INCH        COLUMBIA           GA   EMERGENCY MNGR

            MARBLE SIZE HAIL COVERING THE GROUND IN EVANS

&&

BC

Local storm report, May 10, 5:18 PM EDT, 12 minutes before

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

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

0438 PM     HAIL             HEPHZIBAH               33.29N 82.11W
05/10/2005  0.75 INCH        RICHMOND           GA   PUBLIC

            PENNY SIZE HAIL REPORTED IN HEPZIBAH

&&

BC

Local storm report, May 10, 5:20 PM EDT, 10 minutes before

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

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

0506 PM     HAIL             CAMDEN                  34.26N 80.61W
05/10/2005  0.75 INCH        KERSHAW            SC   TRAINED SPOTTER

            PENNY SIZE HAIL REPORTED IN CAMDEN

&&

BC

Local storm report, May 10, 5:25 PM EDT, 5 minutes before

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

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

0505 PM     HAIL             NORTH AUGUSTA           33.52N 81.96W
05/10/2005  0.50 INCH        AIKEN              SC   NWS EMPLOYEE

            MARBLE SIZE HAIL REPORTED NEAR ALONG INTERSTATE 20 NEAR
            EXIT 5

&&

BC

Local storm report, May 10, 5:29 PM EDT, 1 minute before

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

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

0448 PM     HAIL             8 S LUGOFF              34.11N 80.68W
05/10/2005  0.88 INCH        KERSHAW            SC   PUBLIC

            NICKEL SIZE HAIL REPORTED AT COUNTY LINE BAR AND GRILLE

&&

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, 5:14 PM EDT	Flash Flood Warning	CAE	Lexington	2 hr
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, 5:37 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

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.