Alert archive / Georgia / Flash Flood Warnings in 2003

Flash Flood Warning 2, NWS Charleston, SC

April 8, 2003Chatham County, Georgia

NWS Charleston, SC issued this flash flood warning at Apr 8, 2003, 3:53 PM EDT for Chatham County, Georgia. It was in force for 112 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
Apr 8, 2003, 3:53 PM EDT (19:53 UTC)
Expired
Apr 8, 2003, 5:45 PM EDT
In force
112 min
Issued by
NWS Charleston, SC
Area
Counties, with a storm outline in the text

County Chatham County, GA

The radar

The Charleston,SC radar (KCLX), 69 km from the middle of the area, began a volume at 19:52 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, 7.9 hours before the alert went out and 145 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 2003-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2003-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
124 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 KCHS 081954
FFWCHS
GAC051-082145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
353 PM EDT TUE APR 8 2003

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHATHAM COUNTY IN SOUTHEAST GEORGIA...

* UNTIL 545 PM EDT

* AT 346 PM EDT...RADAR INDICATED A LARGE AREA OF HEAVY RAIN FALLING
  ACROSS MUCH OF CHATHAM COUNTY. AS MUCH AS 4 INCHES OF RAIN FELL IN 
  THIS AREA ON MONDAY. AN ADDITIONAL 1 TO 2 INCHES WILL FALL ACROSS
  MUCH OF THE COUNTY THROUGH 545 PM WITH LOCALIZED HIGHER AMOUNTS. THIS 
  WILL LEAD TO FLASH FLOODING...ESPECIALLY IN URBANIZED AREAS.

* FLASH FLOODING WILL OCCUR IN AND AROUND...
  SAVANNAH...
  MONTGOMERY AND BEAULIEU...
  WINDSOR FOREST AND VERNONBURG...
  WHITE BLUFF AND ISLE OF HOPE...
  SANDFLY...
  WILMINGTON ISLAND...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY
FOR HIGHER GROUND. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES.

LAT...LON 3192 8127 3190 8104 3203 8095 3211 8112
          3222 8117 3218 8124 3211 8132

$$
1 follow-up statement
000 
WGUS72 KCHS 082031
FFSCHS
GAC051-082145-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
430 PM EDT TUE APR 8 2003

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CHATHAM COUNTY 
UNTIL 545 PM EDT...

AT 430 PM EDT...RADAR INDICATED MODERATE TO HEAVY RAIN FALLING OVER 
ACROSS MUCH OF CHATHAM COUNTY. THE HEAVIEST RAINS WERE AFFECTING 
SAVANNAH...THUNDERBOLT...WHITE BLUFF...ISLE OF HOPE AND FORT 
MCALLISTER WHERE RADAR ESTIMATES BETWEEN 1 AND 1.5 INCHES OF RAIN 
HAS FALLEN SINCE 330 PM. AN ADDITIONAL INCH OF RAIN IS POSSIBLE 
THROUGH 545 PM WITH LOCALLY HIGHER AMOUNTS AND THE THREAT FOR FLASH 
FLOODING CONTINUES.

REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY AND ASK THEM TO 
IMMEDIATELY RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE IN 
CHARLESTON.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 5:39 PM EDTFlash Flood WarningCHSBryan, Chatham111 min

Nearby

Flash Flood Warnings in Georgia, 2003Every 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.