Alert archive / Florida / Flash Flood Warnings in 2008

Flash Flood Warning 4, NWS Mobile, AL

April 5, 2008Escambia County, Florida

NWS Mobile, AL issued this flash flood warning at Apr 5, 2008, 5:48 AM CDT for Escambia County, Florida. 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 5, 2008, 5:48 AM CDT (10:48 UTC)
Expired: Apr 5, 2008, 8:45 AM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

County Escambia County, FL

The radar

The Mobile radar (KMOB), 81 km from the middle of the area, began a volume at 10:50 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, 10.8 hours before the alert went out and 227 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: 1152 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 931 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMOB 051050
FFWMOB
FLC033-051345-
/O.NEW.KMOB.FF.W.0004.080405T1048Z-080405T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ESCAMBIA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 845 AM CDT

* AT 545 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  FLASH FLOODING FROM THUNDERSTORMS OVER THE WARNED AREA. DOPPLER    
  RADAR INDICATES 2 TO 4 INCHES OF RAIN HAS FALLEN OVER THE LAST 3   
  HOURS BETWEEN WALNUT HILL AND BAY SPRINGS. ADDITIONAL HEAVY RAINS  
  WILL CONTINUE ACROSS ESCAMBIA COUNTY THROUGH 845 AM...PRODUCING    
  ANOTHER 2 TO 3 INCHES.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOLINO...
  MCDAVID...GONZALEZ...FERRY PASS...ENSLEY...COTTAGE HILL...
  CANTONMENT AND BEULAH

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 3074 8730 3057 8720 3046 8719 3048 8739
      3056 8743 3060 8740 3067 8739 3073 8751
      3080 8757 3087 8761 3099 8759 3100 8728
TIME...MOT...LOC 1048Z 325DEG 0KT 3098 8727 3083 8746

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 11:41 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	24 min
Apr 5, 7:51 AM CDT	Tornado Warning	MOB	Escambia, Santa Rosa	39 min
Apr 5, 8:45 AM CDT	Flash Flood Warning	MOB	Escambia, Santa Rosa	2 hr
Apr 5, 9:43 AM CDT	Flash Flood Watch	MOB		4 hr
Apr 5, 10:42 AM CDT	Flash Flood Warning	MOB	Escambia, Okaloosa, Santa Rosa	2 hr
Apr 5, 11:14 AM CDT	River Flood Warning	MOB	Escambia, Okaloosa	11 hr
Apr 5, 11:14 AM CDT	River Flood Warning	MOB	Escambia	11 hr
Apr 5, 11:14 AM CDT	River Flood Warning	MOB	Okaloosa, Santa Rosa	22 hr
Apr 5, 1:11 PM CDT	River Flood Warning	MOB	Okaloosa, Santa Rosa	9 hr
Apr 5, 1:11 PM CDT	River Flood Warning	MOB	Escambia	37 hr
Apr 5, 6:12 PM CDT	River Flood Warning	MOB	Okaloosa	4 days

Nearby

Flash Flood Warnings in Florida, 2008 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.