Alert archive / Alabama / Flash Flood Warnings in 2005

Flash Flood Warning 24, NWS Mobile, AL

April 6, 2005Baldwin County, Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Apr 6, 2005, 8:00 PM CDT for Baldwin County, Mobile County, Alabama. It was in force for 4 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 6, 2005, 8:00 PM CDT (01:00 UTC)
Expired
Apr 7, 2005, 12:00 AM CDT
In force
4 hr
Issued by
NWS Mobile, AL
Area
Counties, with a storm outline in the text

Counties Baldwin County, AL, Mobile County, AL

The radar

The Mobile radar (KMOB), 34 km from the middle of the area, began a volume at 00:59 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 00:00Z, 1.0 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, Slidell Radar S, LA at 00:00Z on 2005-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1611 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, Slidell Radar S, LA at 00:00Z on 2005-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 square meters per square second.19395878Sfc1 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
1611 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
667 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.8
Supercell composite
3.0

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMOB 070103
FFWMOB
ALC003-097-070500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
800 PM CDT WED APR 6 2005

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  BALDWIN COUNTY IN SOUTHWEST ALABAMA
  MOBILE COUNTY IN SOUTHWEST ALABAMA

* UNTIL 1200 AM CDT

* AT 800 PM CDT...LOCAL LAW ENFORCEMENT AND EMERGENCY MANAGEMENT     
  OFFICIALS HAVE REPORTED NUMEROUS AREAS OF FLASH FLOODING ACROSS    
  MAINLY THE CENTRAL AND SOUTHERN PORTIONS OF MOBILE AND BALDWIN     
  COUNTIES THIS EVENING. HOURLY RAINFALL RATES OF 2 TO 3 INCHES HAVE 
  BEEN OCCURRING OVER THE WARNED AREA FOR THE PAST SEVERAL HOURS...  
  AND ALTHOUGH A WEAKENING TREND HAS BEEN NOTED ON RADAR...AN        
  ADDITIONAL 2 TO 3 INCHES WILL LIKELY OCCUR THROUGH MIDNIGHT        
  TONIGHT AS SHOWERS AND THUNDERSTORMS CONTINUE TO TRAIN FROM WEST   
  TO EAST ACROSS THE AREA. 

EXCESSIVE RUNOFF FROM HEAVY RAINFALL HAS CAUSED MUCH FLOODING OF 
SMALL CREEKS AND STREAMS...HIGHWAYS...STREETS AND UNDERPASSES...AS 
WELL AS OTHER POUR DRAINAGE AND LOW LYING AREAS ACROSS THE WARNED 
AREA.

RESIDENTS LIVING IN FLOOD PRONE AREAS SHOULD CONTINUE TAKE IMMEDIATE 
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. MOST FLOOD RELATED DEATHS 
OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED 
BRIDGES...DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A 
FLOWING STREAM...EVEN A SMALL ONE...BY FOOT OR BY AUTOMOBILE. 
REMEMBER...IT ONLY TAKES A FEW INCHES OF SWIFTLY FLOWING WATER TO 
CARRY VEHICLES AWAY. TURN AROUND...DONT DROWN.

LAT...LON 3120 8765 3086 8765 3062 8745 3044 8743
      3029 8754 3028 8776 3034 8782 3027 8782
      3025 8797 3056 8791 3068 8802 3033 8814
      3025 8808 3022 8831 3024 8832 3028 8812
      3040 8835 3108 8837 3114 8791 3127 8774

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 6, 7:01 PM CDTSpecial Marine WarningMOB89 min
Apr 6, 7:04 PM CDTSevere Thunderstorm WarningMOBChoctaw41 min
Apr 6, 9:58 PM CDTSpecial Marine WarningMOB62 min
Apr 6, 11:18 PM CDTSpecial Marine WarningMOB57 min
Apr 7, 12:41 AM CDTSpecial Marine WarningMOB64 min

Nearby

Flash Flood Warnings in Alabama, 2005Every flash flood warning in 2005

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.