Alert archive / South Carolina / Flash Flood Warnings in 2003

Flash Flood Warning 8, NWS Columbia, SC

July 1, 2003Barnwell County, Orangeburg County, South Carolina

NWS Columbia, SC issued this flash flood warning at Jul 1, 2003, 10:38 PM EDT for Barnwell County, Orangeburg 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 outline as issued.

The facts

Issued: Jul 1, 2003, 10:38 PM EDT (02:38 UTC)
Expired: Jul 2, 2003, 12:45 AM EDT
In force: 2 hr
Issued by: NWS Columbia, SC
Area: Counties, with a storm outline in the text

Counties Barnwell County, SC, Orangeburg County, SC

The radar

The Charleston,SC radar (KCLX), 78 km from the middle of the area, began a volume at 02:38 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 00:00Z, 2.6 hours before the alert went out and 141 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: 257 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 769 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 287 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KCAE 020239
FFWCAE
SCC011-075-020445-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
1038 PM EDT TUE JUL 1 2003

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
    NORTHWESTERN ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA
    BARNWELL COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 1245 AM EDT.

* AT 1030 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH VERY HEAVY RAINFALL 21 MILES NORTHWEST OF
  ALLENDALE....MOVING NORTHEAST AT 20 MPH.

* THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE NEAR THE FOLLOWING
LOCATIONS...
    BARNWELL.
    WILLISTON.
    BLACKVILLE.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. 
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE 
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE TO
HIGHER GROUND.

REPORT ANY HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY SHERIFF

LAT...LON 3326 8165 3313 8151 3310 8119 3363 8120

LM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 10:59 PM EDT	Tornado Warning	CAE	Barnwell	31 min
Jul 2, 12:49 AM EDT	Severe Thunderstorm Warning	CAE	Richland	41 min
Jul 2, 12:52 AM EDT	Tornado Warning	CAE	Orangeburg	38 min
Jul 2, 1:40 AM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Sumter	50 min
Jul 2, 1:47 AM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Orangeburg	43 min
Jul 2, 2:36 AM EDT	Severe Thunderstorm Warning	CAE	Clarendon	39 min
Jul 2, 2:43 AM EDT	Tornado Warning	CAE	Clarendon	47 min
Jul 2, 7:10 AM EDT	Flash Flood Warning	CAE	Lee	3 hr

Nearby

Flash Flood Warnings in South Carolina, 2003 Every flash flood warning in 2003

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.