Alert archive / Florida / Flash Flood Warnings in 2014

Flash Flood Warning 29, NWS Mobile, AL

April 29, 2014Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this flash flood warning at Apr 29, 2014, 10:28 PM CDT for Okaloosa County, Santa Rosa County, Florida. It was in force for 6 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 29, 2014, 10:28 PM CDT (03:28 UTC)
Expired
Apr 30, 2014, 4:30 AM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 90 km from the middle of the area, began a volume at 03:29 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 3.5 hours before the alert went out and 245 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, Tallahassee Rgnl, FL at 00:00Z on 2014-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 124 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2014-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.193958Sfc1 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
124 J/kg
Mixed-layer CIN
-255 J/kg
Mixed-layer LCL
1698 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
229 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.

287 
WGUS54 KMOB 300328
FFWMOB
FLC091-113-300930-
/O.NEW.KMOB.FF.W.0029.140430T0328Z-140430T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
ISSUED BY NATIONAL WEATHER SERVICE NEW ORLEANS LA
1028 PM CDT TUE APR 29 2014

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  OKALOOSA COUNTY IN NORTHWEST FLORIDA...
  THIS INCLUDES THE CITY OF CRESTVIEW...
  SANTA ROSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 430 AM CDT WEDNESDAY

* AT 1024 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CRESTVIEW
  AIRPORT...SVEA...PEADEN...MUNSON...MCLELLAN...LAUREL HILL...GOOD
  HOPE...ESCAMBIA FARMS...DORCAS...CANNON TOWN...BLACKMAN...BERRYDALE
  AND BAKER

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES WITH HIGHER AMOUNTS 
POSSIBLE IN THE WARNED AREA.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

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.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MOBILE.

&&

LAT...LON 3070 8710 3100 8710 3099 8638 3070 8639

$$

MJH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 8:07 PM CDTFlash Flood Warning EmergencyMOBEscambia, Okaloosa, Santa Rosa18 hr
Apr 29, 8:15 PM CDTSevere Thunderstorm WarningMOBEscambia, Santa Rosa45 min
Apr 29, 8:26 PM CDTTornado WarningMOBEscambia, Santa Rosa34 min
Apr 29, 8:34 PM CDTTornado WarningMOBOkaloosa26 min
Apr 29, 8:53 PM CDTRiver Flood WarningMOBEscambia, Okaloosa, Santa Rosa57 hr
Apr 29, 8:59 PM CDTTornado WarningMOBOkaloosa, Santa Rosa31 min
Apr 29, 9:24 PM CDTTornado WarningMOBOkaloosa, Santa Rosa36 min
Apr 29, 9:49 PM CDTTornado WarningMOBOkaloosa26 min
Apr 29, 9:59 PM CDTTornado WarningMOBOkaloosa61 min
Apr 29, 10:23 PM CDTRiver Flood WarningMOBOkaloosa, Santa Rosa40 hr
Apr 29, 11:23 PM CDTRiver Flood WarningMOBEscambia, Okaloosa, Santa Rosa49 hr
Apr 29, 11:34 PM CDTRiver Flood WarningMOBOkaloosa, Santa Rosa69 hr
Apr 29, 11:39 PM CDTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa66 min
Apr 30, 1:43 AM CDTRiver Flood WarningMOBEscambia50 hr
Apr 30, 7:06 AM CDTCoastal Flood StatementMOB8 hr
Apr 30, 10:35 AM CDTRiver Flood WarningMOBEscambia71 hr
Apr 30, 2:06 PM CDTAreal Flood WarningMOBEscambia, Okaloosa, Santa Rosa24 hr

Nearby

Flash Flood Warnings in Florida, 2014Every flash flood warning in 2014

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.