Alert archive / Florida / Flash Flood Warnings in 2017

Flash Flood Warning 24, NWS Mobile, AL

June 7, 2017Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this flash flood warning at Jun 7, 2017, 12:20 AM 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
Jun 7, 2017, 12:20 AM CDT (05:20 UTC)
Expired
Jun 7, 2017, 6:15 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), 73 km from the middle of the area, began a volume at 05:22 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, 5.3 hours before the alert went out and 228 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 2017-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 48 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 2017-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.19395878Sfc1 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
48 J/kg
Mixed-layer CIN
-254 J/kg
Mixed-layer LCL
963 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

204 
WGUS54 KMOB 070520
FFWMOB
FLC091-113-071115-
/O.NEW.KMOB.FF.W.0024.170607T0520Z-170607T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
1220 AM CDT WED JUN 7 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Southern Okaloosa County in northwestern Florida...
  Southeastern Santa Rosa County in northwestern Florida...

* Until 615 AM CDT

* At 1220 AM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Wright, Fort Walton Beach, Crestview, Niceville, Destin, Eglin AFB,
  Valparaiso, Mary Esther, Ocean City, Lake Lorraine, Navarre,
  Shalimar, Cinco Bayou and Navarre Beach.

Additional rainfall amounts of 2 to 3 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3037 8693 3071 8693 3072 8639 3038 8640
      3038 8650

$$
1 follow-up statement
686 
WGUS74 KMOB 071029
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
529 AM CDT WED JUN 7 2017

FLC091-113-071039-
/O.CAN.KMOB.FF.W.0024.000000T0000Z-170607T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Okaloosa FL-Santa Rosa FL-
529 AM CDT WED JUN 7 2017

...THE FLASH FLOOD WARNING FOR SOUTHERN OKALOOSA AND SOUTHEASTERN
SANTA ROSA COUNTIES IS CANCELLED...

The heavy rain has ended. Flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed any
remaining road closures.

LAT...LON 3037 8693 3071 8693 3072 8639 3038 8640
      3038 8650

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 8:20 PM CDTFlash Flood WarningMOBEscambia, Santa Rosa6 hr
Jun 6, 8:21 PM CDTAreal Flood AdvisoryMOBEscambia, Santa Rosa3 hr
Jun 6, 8:44 PM CDTFlash Flood WarningMOBEscambia, Santa Rosa6 hr
Jun 7, 2:07 AM CDTAreal Flood WarningMOBEscambia, Santa Rosa3 hr
Jun 7, 6:15 AM CDTAreal Flood WarningMOBSanta Rosa6 hr

Nearby

Flash Flood Warnings in Florida, 2017Every flash flood warning in 2017

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.