Alert archive / Florida / Flash Flood Warnings in 2008

Flash Flood Warning 5, NWS Mobile, AL

April 5, 2008Escambia County, Santa Rosa County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this flash flood warning at Apr 5, 2008, 8:45 AM CDT for Escambia County, Santa Rosa County, Florida; Baldwin County, Alabama. It was in force for 2 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 5, 2008, 8:45 AM CDT (13:45 UTC)
Expired
Apr 5, 2008, 10:45 AM CDT
In force
2 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Baldwin County, AL, Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 94 km from the middle of the area, began a volume at 13:45 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.

What was reported inside it

TimeReportWhereRemark
Apr 5, 8:50 AM CDTFLASH FLOODNe Pace, FLWATER WAS REPORTED OVER US HIGHWAY 90 NEAR MAJORS STREET IN PACE
Apr 5, 9:35 AM CDTFLASH FLOODPace, FLMULTIPLE ROADS IN THE PACE AREA WERE BEING BARRICADED DUE TO FLOOD WATERS
Apr 5, 9:45 AM CDTFLASH FLOODMilton, FLDAM ON LOCKLIN LAKE IN MILTON THAT WAS UNDER CONSTRUCTION FAILED. TWO RESIDENCES WERE DAMAGED. LARGE DEBRIS FIELD WENT DOWN COLLINS CREEK INTO THE BLACKWATER RIVER CAUSING THE CLOSURE OF 2 BRIDGES IN THE CITY OF MILTON. NO INJURIES ARE BEING REPORTED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.8 hours before the alert went out and 239 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 12:00Z on 2008-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 46 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 12:00Z on 2008-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 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
46 J/kg
Mixed-layer CIN
-137 J/kg
Mixed-layer LCL
460 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMOB 051347
FFWMOB
ALC003-FLC033-113-051545-
/O.NEW.KMOB.FF.W.0005.080405T1345Z-080405T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
845 AM CDT SAT APR 5 2008

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
  SANTA ROSA COUNTY IN NORTHWEST FLORIDA...
  SOUTHERN BALDWIN COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 1045 AM CDT

* AT 845 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
PERSISTENT HEAVY RAINS MOVING ACROSS SOUTHERN BALDWIN 
COUNTY...MOVING ACROSS SOUTHERN ESCAMBIA COUNTY FLORIDA AND ACROSS 
MUCH OF SANTA ROSA COUNTY IN NORTHWEST FLORIDA.  

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HAROLD...BERRYDALE...MUNSON AND MCLELLAN

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.

LAT...LON 3099 8677 3057 8679 3036 8743 3028 8777
      3041 8793 3071 8732 3100 8728
TIME...MOT...LOC 1345Z 237DEG 29KT 3075 8698

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 4, 11:41 PM CDTSevere Thunderstorm WarningMOBEscambia24 min
Apr 5, 5:48 AM CDTFlash Flood WarningMOBEscambia3 hr
Apr 5, 7:51 AM CDTTornado WarningMOBEscambia, Santa Rosa39 min
Apr 5, 9:43 AM CDTFlash Flood WatchMOB4 hr
Apr 5, 10:42 AM CDTFlash Flood WarningMOBEscambia, Okaloosa, Santa Rosa2 hr
Apr 5, 11:14 AM CDTRiver Flood WarningMOBEscambia, Okaloosa11 hr
Apr 5, 11:14 AM CDTRiver Flood WarningMOBEscambia11 hr
Apr 5, 11:14 AM CDTRiver Flood WarningMOBOkaloosa, Santa Rosa22 hr
Apr 5, 1:11 PM CDTRiver Flood WarningMOBOkaloosa, Santa Rosa9 hr
Apr 5, 1:11 PM CDTRiver Flood WarningMOBEscambia37 hr
Apr 5, 6:12 PM CDTRiver Flood WarningMOBOkaloosa4 days
Apr 4, 7:40 PM CDTTornado WarningMOBMobile, Washington50 min
Apr 4, 8:00 PM CDTSevere Thunderstorm WarningMOBMobile45 min
Apr 4, 8:37 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile38 min
Apr 4, 8:41 PM CDTSpecial Marine WarningMOB51 min
Apr 4, 10:40 PM CDTSevere Thunderstorm WarningMOBConecuh, Escambia50 min
Apr 5, 12:10 AM CDTFlash Flood WarningMOBBaldwin, Mobile8 hr
Apr 5, 5:34 AM CDTSpecial Marine WarningMOB56 min
Apr 5, 8:42 AM CDTSpecial Marine WarningMOB93 min
Apr 5, 10:13 AM CDTSpecial Marine WarningMOB32 min
Apr 5, 10:22 AM CDTSpecial Marine WarningMOB83 min
Apr 5, 11:14 AM CDTRiver Flood WarningMOBBaldwin26 hr
Apr 5, 11:41 AM CDTSpecial Marine WarningMOB36 min

Nearby

Flash Flood Warnings in Florida, 2008Flash Flood Warnings in Alabama, 2008Every flash flood warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.