Alert archive / Alabama / Flash Flood Warnings in 2001

Flash Flood Warning 16, NWS Mobile, AL

July 12, 2001Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Jul 12, 2001, 5:48 PM CDT for Mobile County, Alabama. It was in force for 87 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jul 12, 2001, 5:48 PM CDT (22:48 UTC)
Expired: Jul 12, 2001, 7:15 PM CDT
In force: 87 min
Issued by: NWS Mobile, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Mobile County, AL

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.8 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: 493 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1027 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 63 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 KMOB 122248
FFWMOB
ALC097-130015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
548 PM CDT THU JUL 12 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL MOBILE COUNTY IN SOUTHWEST ALABAMA

* UNTIL 715 PM CDT

* AT 546 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN OVER LANGAN PARK...OR ABOUT 7 MILES WEST OF DOWNTOWN MOBILE...
  MOVING SOUTH AT 15 MPH.  RADAR ESTIMATES INDICATE THAT STORMS IN 
THIS
  GENERAL AREA HAVE ALREADY PRODUCED OVER 3 INCHES OF RAINFALL SINCE
  445 PM THIS AFTERNOON.  THE ADDITIONAL HEAVY RAINFALL FROM THESE
  APPROACHING STORMS WILL RESULT IN FLASH FLOODING...INCLUDING THE
  MOBILE METRO AREA.

* THE THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL BE NEAR...
  COTTAGE HILL PARK BY 550 PM CDT
  KNOLLWOOD HOSPITAL...BROOKLEY FIELD AIRPORT BY 555 PM CDT
  I10 AND I65 INTERSECTION BY 600 PM CDT
  TILLMANS CORNER...MOBILE GREYHOUND PARK BY 605 PM CDT

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

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 IN
MOBILE.

LAT...LON 3079 8808 3074 8828 3036 8817 3043 8799

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 4:57 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	63 min

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.