Alert archive / Florida / Flash Flood Warnings in 2013

Flash Flood Warning 34, NWS Mobile, AL

July 11, 2013Okaloosa County, Florida

NWS Mobile, AL issued this flash flood warning at Jul 11, 2013, 11:13 AM CDT for Okaloosa County, Florida. It was in force for 2 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
Jul 11, 2013, 11:13 AM CDT (16:13 UTC)
Expired
Jul 11, 2013, 1:15 PM CDT
In force
2 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 73 km from the middle of the area, began a volume at 16:15 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 12:00Z, 4.2 hours before the alert went out and 230 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 12:00Z on 2013-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 114 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 12:00Z on 2013-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939Sfc1 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
114 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
996 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
20 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.

781 
WGUS54 KMOB 111613
FFWMOB
FLC091-111815-
/O.NEW.KMOB.FF.W.0034.130711T1613Z-130711T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1113 AM CDT THU JUL 11 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL OKALOOSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 115 PM CDT

* AT 1106 AM CDT...VERY HEAVY RAINFALL WAS INDICATED OVER THE WARNED
  AREA AND RADAR ESTIMATES SHOW 2 TO 3 INCHES OF RAINFALL HAS
  OCCURRED OVER THE PAST HOUR AND NEARLY 5 INCHES OF RAIN HAS FALLEN
  IN THE PAST TWO HOURS. THIS WILL LIKELY CAUSE FLASH FLOODING IN
  THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  RURAL WEST CENTRAL OKALOOSA COUNTY

LAT...LON 3061 8661 3061 8679 3074 8679 3073 8667
      3068 8661

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 9:23 AM CDTAreal Flood AdvisoryMOBEscambia, Okaloosa, Santa Rosa3 hr
Jul 11, 10:52 AM CDTFlash Flood WarningMOBOkaloosa3 hr
Jul 11, 11:58 AM CDTAreal Flood AdvisoryMOBEscambia, Okaloosa, Santa Rosa2 hr
Jul 11, 1:13 PM CDTAreal Flood AdvisoryMOBEscambia, Santa Rosa2 hr
Jul 11, 3:31 PM CDTRiver Flood WarningMOBOkaloosa7 days
Jul 11, 5:04 PM CDTRiver Flood WarningMOBEscambia25 hr

Nearby

Flash Flood Warnings in Florida, 2013Every flash flood warning in 2013

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.