Alert archive / Florida / Flash Flood Warnings in 2013

Flash Flood Warning 38, NWS Mobile, AL

July 22, 2013Santa Rosa County, Florida

NWS Mobile, AL issued this flash flood warning at Jul 22, 2013, 8:10 PM CDT for Santa Rosa County, Florida. It was in force for 3 hr. 1 report 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
Jul 22, 2013, 8:10 PM CDT (01:10 UTC)
Expired
Jul 22, 2013, 11:15 PM CDT
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 96 km from the middle of the area, began a volume at 01:11 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
Jul 22, 8:21 PM CDTFLASH FLOODNavarre, FLWATER KNEE DEEP IN A HOUSE ON AURORA DR IN HOLLEY BY THE SEA.

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

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 1.2 hours before the alert went out and 250 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 2013-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 40 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, Tallahassee Rgnl, FL at 00:00Z on 2013-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 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
40 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
715 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
-22 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.

318 
WGUS54 KMOB 230110
FFWMOB
FLC113-230415-
/O.NEW.KMOB.FF.W.0038.130723T0110Z-130723T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
810 PM CDT MON JUL 22 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 1115 PM CDT

* AT 806 PM CDT...VERY HEAVY RAINFALL WAS INDICATED OVER THE WARNED
  AREA AND RADAR ESTIMATES SHOW 2 TO 4 INCHES OF RAINFALL HAS
  OCCURRED OVER THE PAST FEW HOURS WHICH HAS RESULTED IN PONDING OF
  WATER OVER ROADWAYS AND MINOR FLOODING OF POOR DRAINAGE AREAS.
  ADDITIONAL SHOWERS AND STORMS ARE MOVING INTO THE AREA WHICH WILL
  BRING HEAVY RAINS TO ALREADY SATURATED GROUNDS. THIS WILL LIKELY
  CAUSE FLASH FLOODING IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  NAVARRE BEACH...      HOLLEY...             NAVARRE...

LAT...LON 3038 8691 3039 8690 3039 8696 3039 8699
      3043 8698 3045 8695 3047 8697 3042 8680
      3040 8679 3038 8680 3037 8688

$$
2 follow-up statements
969 
WGUS74 KMOB 230309
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1009 PM CDT MON JUL 22 2013

FLC113-230415-
/O.CON.KMOB.FF.W.0038.000000T0000Z-130723T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SANTA ROSA FL-
1009 PM CDT MON JUL 22 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR
SOUTHEASTERN SANTA ROSA COUNTY...

AT 1002 PM CDT...WATER KNEE DEEP HAS BEEN REPORTED IN A HOUSE ON 
AURORA DRIVE IN HOLLEY BY THE SEA.  LIGHT TO OCCASIONALLY MODERATE 
RAIN OVER THE WARNED AREA WILL GRADUALLY DIMINISH DURING THE 
REMAINDER OF THE WARNING.  WHILE THE RISK FOR FLASH FLOODING IS 
DIMINISHING...AN EXTENSION TO THE WARNING MAY BE NECESSARY TO ALLOW 
FOR THE FLOOD WATERS TO FULLY RECEDE.

LOCATIONS IMPACTED INCLUDE...
  NAVARRE BEACH...      HOLLEY...        NAVARRE...

LAT...LON 3038 8691 3039 8690 3039 8696 3039 8699
      3043 8698 3045 8695 3047 8697 3042 8680
      3040 8679 3038 8680 3037 8688

$$
087 
WGUS74 KMOB 230416
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1116 PM CDT MON JUL 22 2013

FLC113-230422-
/O.EXP.KMOB.FF.W.0038.000000T0000Z-130723T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SANTA ROSA FL-
1116 PM CDT MON JUL 22 2013

...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 1115 PM CDT
FOR SOUTHEASTERN SANTA ROSA COUNTY...

AT 1114 PM CDT...THE HEAVY RAINFALL THAT PROMPTED THE WARNING FOR
SOUTHEASTERN SANTA ROSA COUNTY HAS ENDED...THUS THE FLASH FLOOD
WARNING WILL BE ALLOWED TO EXPIRE AT 1115 PM CDT. HOWEVER...PONDING 
OF WATER MAY STILL BE ENCOUNTERED OVER ROADWAYS...ESPECIALLY THE 
INTERSECTION OF ORTEGA STREET AND ONICH DRIVE IN NAVARRE.

LAT...LON 3038 8691 3039 8690 3039 8696 3039 8699
      3043 8698 3045 8695 3047 8697 3042 8680
      3040 8679 3038 8680 3037 8688

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 7:41 PM CDTAreal Flood AdvisoryMOBOkaloosa, Santa Rosa2 hr
Jul 23, 4:48 PM CDTSevere Thunderstorm WarningMOBEscambia, Okaloosa, Santa Rosa42 min
Jul 23, 5:27 PM CDTSevere Thunderstorm WarningMOBEscambia, Okaloosa, Santa Rosa63 min
Jul 23, 6:34 PM CDTAreal Flood AdvisoryMOBEscambia, Okaloosa, Santa Rosa116 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.