Alert archive / Alabama / Flash Flood Warnings in 2001

Flash Flood Warning 33, NWS Birmingham, AL

August 10, 2001Madison County, Marshall County, Alabama

NWS Birmingham, AL issued this flash flood warning at Aug 10, 2001, 9:45 AM CDT for Madison County, Marshall County, Alabama. 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 counties it named.

The facts

Issued: Aug 10, 2001, 9:45 AM CDT (14:45 UTC)
Expired: Aug 10, 2001, 12:00 PM CDT
In force: 2 hr
Issued by: NWS Birmingham, AL
Area: Whole counties

Counties Madison County, AL, Marshall County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 2.8 hours before the alert went out and 157 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: 1330 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 825 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: -7 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 KBMX 101449
FFWBHM
ALC089-095-101700-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
945 AM CDT FRI AUG 10 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN MADISON COUNTY IN NORTH CENTRAL ALABAMA
  WESTERN MARSHALL COUNTY IN NORTHEAST ALABAMA

* UNTIL 1200 PM CDT

* AT 945 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY 
RAIN  FROM THE NEW HOPE AREA TO THE APPLE GROVE AND OLEANDER 
COMMUITIES. RADAR ESTIMATES OF 3 TO 4 INCHES DURING THE PAST THREE 
HOURS WERE COMMON THROUGH THE AREA WITH HIGHER TOTALS OF 6 TO 8 
INCHES IN MORE LOCAL AREAS. THE STORMS ARE EXPECTED TO CONTINUE TO 
DEVELOP AND MOVE ACROSS THE SAME LOCATIONS PRODUCING AN ADDITIONAL 1 
TO 2 INCHES...POSSIBLY 3 INCHES IN SOME LOCATIONS...OF RAINFALL 
THROUGH NOON. 

THIS EXTENDS THE PREVIOUS FLASH FLOOD WARNING FOR THESE AREAS. 

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. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

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

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 7:01 AM CDT	Flash Flood Warning	BMX	Madison, Marshall	3 hr
Aug 10, 8:30 AM CDT	Flash Flood Warning	BMX	Morgan	3 hr
Aug 10, 9:44 AM CDT	Flash Flood Warning	BMX	Jackson	3 hr
Aug 10, 11:29 AM CDT	Flash Flood Warning	BMX	Morgan	3 hr
Aug 10, 12:00 PM CDT	Flash Flood Warning	BMX	Madison, Marshall	3 hr

Nearby

Flash Flood Warnings in Alabama, 2001 Every flash flood warning in 2001

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.