Alert archive / Alabama / Flash Flood Warnings in 2003

Flash Flood Warning 28, NWS Mobile, AL

July 19, 2003Choctaw County, Alabama

NWS Mobile, AL issued this flash flood warning at Jul 19, 2003, 6:16 PM CDT for Choctaw County, Alabama. It was in force for 89 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
Jul 19, 2003, 6:16 PM CDT (23:16 UTC)
Expired
Jul 19, 2003, 7:45 PM CDT
In force
89 min
Issued by
NWS Mobile, AL
Area
Counties, with a storm outline in the text

County Choctaw County, AL

The radar

The Mobile radar (KMOB), 135 km from the middle of the area, began a volume at 23:16 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

Jackson, MS (KJAN), launched 12:00Z, 11.3 hours before the alert went out and 176 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, Jackson, MS at 12:00Z on 2003-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1927 joules per kilogram.LCLLFCEL10008507005003002001001 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, Jackson, MS at 12:00Z on 2003-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 square meters per square second.1939Sfc1 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
1927 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1013 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
1 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.4

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMOB 192320
FFWMOB
ALC023-200045-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
616 PM CDT SAT JUL 19 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL CHOCTAW COUNTY IN SOUTHWEST ALABAMA

* UNTIL 745 PM CDT

* AT 615 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY 
RAIN BETWEEN TOXEY AND HINTON...THE THUNDERSTORM PRODUCING THE HEAVY 
RAIN WAS WEAKENING SLIGHTLY AS IT DRIFTS SOUTHEAST AT 5 MPH. RADAR 
ESTIMATED UP TO 4 INCHES OF RAIN IN AN HOURS TIME JUST SOUTH OF 
NEEDHAM BETWEEN 515 AND 615 PM.

* STORMS WITH HEAVY RAINFALL WILL AFFECT AREAS IN AND AROUND...  
CHAPPELL HILL AND BARRYTOWN BY 640 PM CDT...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES AND
ARROYOS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

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.
MOVE TO HIGHER GROUND.

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. 

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE.

LAT...LON 3199 8825 3192 8844 3177 8831 3179 8817

$$
1 follow-up statement
000 
WGUS74 KMOB 200024
FFSMOB
ALC023-200100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
723 PM CDT SAT JUL 19 2003

...A FLASH FLOOD WARNING CONTINUES IN EFFECT UNTIL 745 PM CDT FOR 
THE FOLLOWING COUNTY...

IN SOUTHWEST ALABAMA...CHOCTAW COUNTY.

AT 720 PM CDT...WEATHER SERVICE RADAR INDICATED THE THUNDERSTORMS 
THAT PROMPTED THE FLASH FLOOD WARNING HAVE WEAKEND AND MOVED SOUTH 
TO NEAR BLADON SPRINGS STATE PARK. HOWEVER...RUNOFF FROM THE EARLIER 
THUNDERSTORMS WILL CONTINUE TO CAUSE FLOODING OF SMALL CREEKS... 
STREAMS AND HIGHWAYS IN CENTRAL CHOCTAW COUNTY.  WEATHER RADAR 
ESTIMATED 3 TO 5 INCHES OF RAIN FELL THIS AFTERNOON OVER THE WARNED 
AREA. 

RADAR SHOWS SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP JUST WEST 
OF CHOCTAW COUNTY...THESE STORMS WERE MOVING EAST SOUTHEAST AND MAY 
POSE A PROBLEM LATER THIS EVENING. IF ADDITIONAL HEAVY RAIN FALLS 
OVER CENTRAL CHOCTAW COUNTY...ANOTHER FLASH FLOOD WARNING MAY BE 
REQUIRED.

REMEMBER...A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR
OCCURRING. RESIDENTS LIVING IN AREAS SUBJECT TO FLOODING SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. IF FLASH FLOODING
IS OBSERVED...MOVE QUICKLY TO HIGHER GROUND. 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. MOVE TO HIGHER 
GROUND.

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 19, 9:24 AM CDTSpecial Marine WarningMOB36 min
Jul 19, 2:15 PM CDTSpecial Marine WarningMOB60 min
Jul 19, 3:06 PM CDTSpecial Marine WarningMOB114 min
Jul 19, 3:06 PM CDTSpecial Marine WarningMOB114 min
Jul 19, 3:31 PM CDTSpecial Marine WarningMOB119 min

Nearby

Flash Flood Warnings in Alabama, 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.