Alert archive / Florida / Flash Flood Warnings in 2014

Flash Flood Warning 39, NWS Tallahassee, FL

September 16, 2014Holmes County, Jackson County, Washington County, Florida

NWS Tallahassee, FL issued this flash flood warning at Sep 16, 2014, 2:46 PM CDT for Holmes County, Jackson County, Washington County, Florida. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 16, 2014, 2:46 PM CDT (19:46 UTC)
Expired
Sep 16, 2014, 3:45 PM CDT
In force
59 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Flood severity
None

Counties Holmes County, FL, Jackson County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 47 km from the middle of the area, began a volume at 19:49 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, 7.8 hours before the alert went out and 140 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 2014-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1438 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 12:00Z on 2014-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
1438 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
545 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
26 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.

846 
WGUS52 KTAE 161946
FFWTAE
FLC059-063-133-162045-
/O.NEW.KTAE.FF.W.0039.140916T1946Z-140916T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
246 PM CDT TUE SEP 16 2014

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN HOLMES COUNTY IN THE PANHANDLE OF FLORIDA...
  NORTHWESTERN JACKSON COUNTY IN THE PANHANDLE OF FLORIDA...
  EXTREME NORTHEASTERN WASHINGTON COUNTY IN THE PANHANDLE OF
  FLORIDA...

* UNTIL 345 PM CDT

* AT 243 PM CDT...THE NATIONAL WEATHER SERVICE HAS DETERMINED FLASH  
  FLOODING FROM THUNDERSTORMS IS IMMINENT OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BETHLEHEM...SILLS...ELLAVILLE...TENDIL CROSSING...PITTMAN...NOMA
  JUNCTION...MILLER CROSSROADS...JACOBS...HOLLAND CROSSROADS...
  GRACEVILLE...CAMPBELLTON AND ARDS CROSSROADS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE AWAY FROM RISING WATER TO HIGHER GROUND! MOST FLOOD DEATHS OCCUR
IN VEHICLES. DO NOT ATTEMPT TO DRIVE THROUGH FLOODED ROADS.
REMEMBER...TURN AROUND...DON'T DROWN.

&&

LAT...LON 3098 8583 3097 8526 3076 8531 3085 8595

$$

1-WESTON

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 16, 9:00 AM CDTRip Current StatementTAEBay, Franklin, Gulf, Walton13 hr
Sep 16, 2:22 PM CDTAreal Flood AdvisoryTAEBay, Holmes, Jackson, Washington113 min
Sep 16, 2:42 PM CDTFlash Flood WarningTAEBay, Calhoun, Holmes, Jackson, Washington3 hr
Sep 16, 4:01 PM CDTFlash Flood WarningTAEHolmes, Washington119 min

Nearby

Flash Flood Warnings in Florida, 2014Every flash flood warning in 2014

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.