Alert archive / Florida / Flash Flood Warnings in 2017

Flash Flood Warning 25, NWS Mobile, AL

June 13, 2017Escambia County, Santa Rosa County, Florida

NWS Mobile, AL issued this flash flood warning at Jun 13, 2017, 8:54 AM CDT for Escambia 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 13, 2017, 8:54 AM CDT (13:54 UTC)
Expired
Jun 13, 2017, 3:00 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 104 km from the middle of the area, began a volume at 13:54 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.9 hours before the alert went out and 243 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, Slidell Radar S, LA at 12:00Z on 2017-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1172 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, Slidell Radar S, LA at 12:00Z on 2017-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
1172 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
623 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

071 
WGUS54 KMOB 131354
FFWMOB
FLC033-113-132000-
/O.NEW.KMOB.FF.W.0025.170613T1354Z-170613T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
854 AM CDT TUE JUN 13 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  South central Santa Rosa County in northwestern Florida...
  South central Escambia County in northwestern Florida...

* Until 300 PM CDT Tuesday

* At 853 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...
  Pensacola, Brent, West Pensacola, Warrington, Goulding and Myrtle
  Grove.

Additional rainfall amounts of 2 to 4 are possible in the warned 
area this morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3054 8710 3045 8704 3032 8730 3040 8737

$$
1 follow-up statement
744 
WGUS74 KMOB 131853
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
153 PM CDT TUE JUN 13 2017

FLC033-113-131903-
/O.CAN.KMOB.FF.W.0025.000000T0000Z-170613T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Santa Rosa FL-Escambia FL-
153 PM CDT TUE JUN 13 2017

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL SANTA ROSA AND SOUTH
CENTRAL ESCAMBIA COUNTIES IS CANCELLED...

Flood waters are receding. Flooding is no longer expected to pose a 
threat. Please continue to heed any remaining road closures.

LAT...LON 3054 8710 3045 8704 3032 8730 3040 8737

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 8:24 AM CDTAreal Flood AdvisoryMOBEscambia3 hr
Jun 13, 9:21 AM CDTAreal Flood AdvisoryMOBSanta Rosa3 hr
Jun 13, 10:02 AM CDTAreal Flood AdvisoryMOBEscambia, Santa Rosa3 hr
Jun 13, 10:11 AM CDTAreal Flood AdvisoryMOBSanta Rosa3 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.