Alert archive / Georgia / Flash Flood Warnings in 2004

Flash Flood Warning 1, NWS Charleston, SC

May 1, 2004McIntosh County, Georgia; Charleston County, South Carolina

NWS Charleston, SC issued this flash flood warning at May 1, 2004, 7:59 PM EDT for McIntosh County, Georgia; Charleston County, South Carolina. It was in force for 120 days. 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 1, 2004, 7:59 PM EDT (23:59 UTC)
Expired: Aug 29, 2004, 8:30 AM EDT
In force: 120 days
Issued by: NWS Charleston, SC
Area: Counties, with a storm outline in the text

Counties McIntosh County, GA, Charleston County, SC

The radar

The Jacksonville radar (KJAX), 118 km from the middle of the area, began a volume at 00:04 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

Jacksonville, FL (KJAX), launched 12:00Z, 12.0 hours before the alert went out and 116 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: 1018 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 612 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 120 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 020003
FFWCHS
GAC191-020130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
759 PM EDT SAT MAY 1 2004

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

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

* UNTIL 930 PM EDT

* AT 759 PM EDT...RADAR INDICATED VERY HEAVY RAIN OCCURRING ALONG A
  LINE EXTENDING FROM 3 MILES NORTHWEST OF PINE HARBOR TO 7 MILES
  NORTHWEST OF COX. THE THUNDERSTORMS PRODUCING THE HEAVY RAIN ARE   
  DRIFTING EAST.

* FLASH FLOODING WILL OCCUR IN AND AROUND...
  TOWNSEND...
  COX...
  SHELLMAN BLUFF...
  PINE HARBOR AND EULONIA...

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE RAPID FLOODING OF
ROADWAYS...SMALL CREEKS AND STREAMS...LOW-LYING AREAS AND DITCHES.

US-15...I-95 AND STATE ROAD 57 NEAR THE COMMUNITIES OF 
TOWNSEND...EULONIA...WARSAW AND HUXFORD WILL RECEIVE UP TO ANOTHER 1 
TO 3 INCHES OF RAIN THROUGH 9 PM...ON TOP OF THE 3 TO 4 INCHES THAT 
HAS ALREADY SOAKED THE GROUND.

TO REPORT SIGNIFICANT FLOODING...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON AT 843-747-5046.

BE ESPECIALLY CAUTIOUS NOW THAT IT IS NIGHT TIME...WHEN IT IS HARDER 
TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLOODING IS 
OBSERVED...ACT QUICKLY. MOVE TO HIGHER GROUND TO ESCAPE FLOOD 
WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS 
RISING.

LAT...LON 3163 8139 3153 8170 3137 8152 3142 8133
      3150 8118

$$

PM

1 follow-up statement

000 
WGUS52 KCHS 291034
FFWCHS
SCC019-291230-
/X.NEW.KCHS.FF.W.0001.040829T1031Z-040829T1230Z/
/0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
631 AM EDT SUN AUG 29 2004

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA...

* UNTIL 830 AM EDT

* AT 627 AM EDT...RADAR INDICATED VERY HEAVY RAIN OCCURRING FROM     
  THE RAINBANDS ASSOCIATED WITH TROPICAL STORM GASTON FROM 11        
  MILES EAST OF AWENDAW TO 8 MILES SOUTHWEST OF AWENDAW TO JAMES     
  ISLAND...MOVING NORTHWEST AT 15 MPH.

* FLASH FLOODING IS EXPECTED IN AND AROUND...
  SULLIVANS ISLAND AND ISLE OF PALMS...
  MOUNT PLEASANT...
  JAMES ISLAND AND FOLLY BEACH...
  AWENDAW...
  DOWNTOWN CHARLESTON...

RAINFALL RATES OF 1 INCH IN 30 MINUTES OR LESS WILL PRODUCE FLOODING 
ACROSS PARTS OF CHARLESTON COUNTY THIS MORNING...FURTHER COMPLICATED 
BY THE UPCOMING HIGH TIDE.

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.

TO REPORT FLOODING...PLEASE CONTACT THE NATIONAL WEATHER SERVICE IN 
CHARLESTON TOLL FREE AT 1-888-383-2024.

LAT...LON 3287 8004 3260 8003 3289 7947 3306 7936
      3311 7964 3287 7985

$$

33

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 3:20 PM EDT	Severe Thunderstorm Warning	CHS	Liberty	40 min
May 1, 3:33 PM EDT	Severe Thunderstorm Warning	CHS	Charleston, Colleton	42 min
May 1, 6:12 PM EDT	Special Marine Warning	CHS		63 min
May 1, 7:11 PM EDT	Special Marine Warning	CHS		64 min

Nearby

Flash Flood Warnings in Georgia, 2004 Flash Flood Warnings in South Carolina, 2004 Every flash flood warning in 2004

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.