Alert archive / Alabama / Flash Flood Warnings in 2003

Flash Flood Warning 2, NWS Mobile, AL

April 7, 2003Baldwin County, Alabama

NWS Mobile, AL issued this flash flood warning at Apr 7, 2003, 5:23 PM CDT for Baldwin 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: Apr 7, 2003, 5:23 PM CDT (22:23 UTC)
Expired: Apr 7, 2003, 8:15 PM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Counties, with a storm outline in the text

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 56 km from the middle of the area, began a volume at 22:23 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.4 hours before the alert went out and 200 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: 1394 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 592 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 8.4

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMOB 072224
FFWMOB
ALC003-080115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
523 PM CDT MON APR 7 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL BALDWIN COUNTY IN SOUTHWEST ALABAMA

* UNTIL 815 PM CDT

* AT 520 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED NUMEROUS
  SHOWERS AND THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER NORTH
  CENTRAL BALDWIN COUNTY INCLUDING RABUN...BAY MINETTE AND
  INTERSTATE 65. RADAR RAINFALL ESTIMATES INDICATES THAT 3 TO 4
  INCHES OF RAIN HAS FALLEN OVER THE AREA SINCE 2PM AND UP TO 2 TO 3
  INCHES OF RAIN MAY FALL AS ADDITIONAL SHOWERS AND THUNDERSTORMS
  TRAIN OVER THE AREA.

EXCESSIVE RUNOFF FROM THESE STORMS 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.

LAT...LON 3085 8793 3094 8762 3124 8762 3117 8792

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 6, 10:25 PM CDT	Tornado Warning	MOB	Choctaw	65 min
Apr 6, 11:19 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	56 min
Apr 7, 12:29 AM CDT	Severe Thunderstorm Warning	MOB	Wilcox	46 min
Apr 7, 12:37 AM CDT	Tornado Warning	MOB	Wilcox	23 min
Apr 7, 1:03 AM CDT	Tornado Warning	MOB	Wilcox	42 min
Apr 7, 6:46 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw	44 min
Apr 7, 7:52 AM CDT	Severe Thunderstorm Warning	MOB	Wilcox	53 min
Apr 7, 1:17 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	28 min
Apr 7, 3:42 PM CDT	Severe Thunderstorm Warning	MOB	Covington	48 min

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; radar from the NEXRAD Level II archive.