Alert archive / Alabama / Flash Flood Warnings in 2003

Flash Flood Warning 49, NWS Huntsville, AL

August 3, 2003Jackson County, Alabama

NWS Huntsville, AL issued this flash flood warning at Aug 3, 2003, 5:15 AM CDT for Jackson County, Alabama. It was in force for 3 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: Aug 3, 2003, 5:15 AM CDT (10:15 UTC)
Expired: Aug 3, 2003, 8:00 AM CDT
In force: 3 hr
Issued by: NWS Huntsville, AL
Area: Counties, with a storm outline in the text

County Jackson County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 10.3 hours before the alert went out and 166 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: 149 J/kg
Mixed-layer CIN: -211 J/kg
Mixed-layer LCL: 1010 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 93 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 
WGUS54 KHUN 031014
FFWHUN
ALC071-031300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
515 AM CDT SUN AUG 3 2003

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JACKSON COUNTY IN NORTHEAST ALABAMA

* UNTIL 8 AM CDT

* AT 512 AM CDT...WEATHER SERVICE RADAR DETECTED THUNDERSTORMS
  PRODUCING VERY HEAVY RAINFALL FROM 7 MILES SOUTHWEST OF SKYLINE...
  TO SCOTTSBORO...AND PISGAH...MOVING NORTHEAST AT 25 MPH. DOPPLER 
  RADAR HAS ESTIMATED 1-3 INCHES OF RAIN HAS FALLEN OVER JACKSON  
  COUNTY...FROM HYTOP AND SKYLINE...AND OVER SAND MOUNTAIN. OTHER
  THUNDERSTORMS WITH HEAVY RAINS HAVE AFFECTED THE COUNTY SINCE 2 AM.

* SOME COMMUNITIES AFFECTED INCLUDE...
  BRIDGEPORT...HOLLYWOOD...PISGAH...SCOTTSBORO...SECTION...SKYLINE...
  STEVENSON AND WOODVILLE.

DURING FLASH FLOODING...WATER LEVELS IN AREA STREAMS AND RIVERS CAN 
RAPIDLY INCREASE...TRANSFORMING THEM INTO RAGING CURRENTS. NEVER 
ATTEMPT TO CROSS FLOOD WATERS BY VEHICLE OR ON FOOT. 

MOVE TO HIGHER GROUND TO ESCAPE FLOOD WATERS

LAT...LON 3460 8617 3460 8633 3500 8633 3500 8561
          3486 8558 3458 8584 3450 8603

$$ 
RSB

2 follow-up statements

000 
WGUS74 KHUN 031158
FFSHUN
ALC071-031300-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
653 AM CDT SUN AUG 3 2003

...A FLASH FLOOD WARNING CONTINUES FOR JACKSON COUNTY UNTIL 
8 AM CDT...

AT 650 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH HEAVY RAINS WERE ENDING ACROSS JACKSON COUNTY. 
HOWEVER...ADDITIONAL DEVELOPMENT POSSIBLE OVER THE NEXT HOUR. 

ALTHOUGH THE HEAVY RAINFALL HAS COME TO AN END...FLOODING OF LOW 
LYING AND POOR DRAINAGE AREAS WILL CONTINUE DUE TO RUNOFF FROM THE 
RECENT RAINS.

SOME CITIES AFFECTED THROUGH 815 AM CDT INCLUDE...
BRIDGEPORT...HOLLYWOOD...PISGAH...SCOTTSBORO...SECTION...SKYLINE...  
STEVENSON AND WOODVILLE.

OVER THREE INCHES OF RAIN HAS FALLEN OVER JACKSON COUNTY.

FLOODING IN MOUNTAINOUS AREAS IS ESPECIALLY DANGEROUS. HEAVY 
RAINFALL...EVEN IN THE DISTANT...CAN CREATE SUDDEN FLOWS CAPABLE OF 
OVERTAKING CAMPERS AND HIKERS. 

MOVE TO HIGHER GROUND TO ESCAPE FLOOD WATERS.

REPORT INCIDENTS OF FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY. 
THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST 
OFFICE IN HUNTSVILLE.

LAT...LON 3460 8616 3461 8632 3501 8631 3500 8561
          3486 8558 3459 8584 3451 8606

$$ 
RSB

000 
WGUS74 KHUN 031302
FFSHUN
ALC071-031330-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
800 AM CDT SUN AUG 3 2003

...FLASH FLOOD WARNING FOR JACKSON COUNTY HAS BEEN ALLOWED TO 
EXPIRE...

AT 800 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT SHOWERS AND THUNDERSTORMS THAT PROMPTED THE FLASH FLOOD WARNING 
FOR JACKSON COUNTY HAVE MOVED EAST OF THE AREA INTO GEORGIA.  SOME 
MINOR FLOODING MAY CONTINUE...BUT THE SERIOUS THREAT OF FLOODING HAS 
ENDED. THUS THE FLASH FLOOD WARNING IS BEING ALLOWED TO EXPIRE.

SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA 
THIS AFTERNOON.

STAY TUNED TO NOAA WEATHER...OR TO YOUR FAVORITE LOCAL MEDIA FOR THE
LATEST WEATHER INFORMATION.

LAT...LON 3499 8560 3460 8585 3450 8604 3463 8631
          3501 8632

$$

Nearby

Flash Flood Warnings in Alabama, 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.