Alert archive / Florida / Flash Flood Warnings in 2016

Flash Flood Warning 23, NWS Mobile, AL

May 17, 2016Escambia County, Okaloosa County, Santa Rosa County, Florida; Escambia County, Alabama

NWS Mobile, AL issued this flash flood warning at May 17, 2016, 6:40 PM CDT for Escambia County, Okaloosa County, Santa Rosa County, Florida; Escambia County, Alabama. 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
May 17, 2016, 6:40 PM CDT (23:40 UTC)
Expired
May 17, 2016, 9:45 PM CDT
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

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

The radar

The Eglin Afb radar (KEVX), 109 km from the middle of the area, began a volume at 23:42 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

Birmingham, AL (KBMX), launched 12:00Z, 11.7 hours before the alert went out and 248 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, Birmingham, AL at 12:00Z on 2016-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 30 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, Birmingham, AL at 12:00Z on 2016-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 224 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
30 J/kg
Mixed-layer CIN
-192 J/kg
Mixed-layer LCL
1257 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
224 m²/s²
0-3 km storm-relative helicity
319 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

321 
WGUS54 KMOB 172340
FFWMOB
ALC053-FLC033-091-113-180245-
/O.NEW.KMOB.FF.W.0023.160517T2340Z-160518T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
640 PM CDT TUE MAY 17 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTH CENTRAL ESCAMBIA COUNTY IN NORTHWESTERN FLORIDA...
  NORTHERN SANTA ROSA COUNTY IN NORTHWESTERN FLORIDA...
  NORTHWESTERN OKALOOSA COUNTY IN NORTHWESTERN FLORIDA...

* UNTIL 945 PM CDT

* AT 639 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BREWTON...CENTURY...FLOMATON...EAST BREWTON...JAY...POLLARD AND
  RIVERVIEW.

LAT...LON 3082 8682 3081 8741 3110 8732 3111 8670
      3109 8670

$$
1 follow-up statement
105 
WGUS74 KMOB 180102
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
802 PM CDT TUE MAY 17 2016

ALC053-FLC033-091-113-180112-
/O.CAN.KMOB.FF.W.0023.000000T0000Z-160518T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESCAMBIA AL-ESCAMBIA FL-SANTA ROSA FL-OKALOOSA FL-
802 PM CDT TUE MAY 17 2016

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN ESCAMBIA...NORTH CENTRAL
ESCAMBIA...NORTHERN SANTA ROSA AND NORTHWESTERN OKALOOSA COUNTIES IS
CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3082 8682 3081 8741 3110 8732 3111 8670
      3109 8670

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 5:07 PM CDTAreal Flood AdvisoryMOBEscambia, Okaloosa, Santa Rosa3 hr
May 17, 5:14 AM CDTSmall Craft AdvisoryMOB6 hr
May 17, 5:18 PM CDTSpecial Weather StatementMOBEscambia42 min

Nearby

Flash Flood Warnings in Florida, 2016Flash Flood Warnings in Alabama, 2016Every flash flood warning in 2016

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.