Alert archive / Florida / Flash Flood Warnings in 2014

Flash Flood Warning 7, NWS Tallahassee, FL

April 15, 2014Walton County, Washington County, Florida

NWS Tallahassee, FL issued this flash flood warning at Apr 15, 2014, 1:39 AM CDT for Walton County, Washington County, Florida. It was in force for 3 hr. 7 reports 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: Apr 15, 2014, 1:39 AM CDT (06:39 UTC)
Expired: Apr 15, 2014, 4:45 AM CDT
In force: 3 hr
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Flood severity: None

Counties Walton County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 4 km from the middle of the area, began a volume at 06:40 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

Time	Report	Where	Remark
Apr 15, 1:45 AM CDT	FLASH FLOOD	1 E Five Points, FL	FLOODING REPORTED ON DOUGLAS FERRY ROAD.
Apr 15, 1:45 AM CDT	FLASH FLOOD	2 Ese Vernon, FL	SYLVANIA ROAD CLOSED NEAR PIPPIN MILL CREEK DUE TO OVERNIGHT FLOODING AS OF 11 AM CDT. TIME OF INITIAL FLOODING APPROXIMATED.
Apr 15, 1:45 AM CDT	FLASH FLOOD	3 Wsw Vernon, FL	TWO CREEK ROAD CLOSED DUE TO OVERNIGHT FLOODING AS OF 11 AM CDT. TIME OF INITIAL FLOODING APPROXIMATED.
Apr 15, 1:45 AM CDT	FLASH FLOOD	5 Nnw Vernon, FL	A PORTION OF PATE POND ROAD HAS WASHED OUT.
Apr 15, 1:45 AM CDT	FLASH FLOOD	Freeport, FL	WAITS LANE IN FREEPORT IMPASSIBLE DUE TO FLOODING
Apr 15, 2:06 AM CDT	FLASH FLOOD	2 Sw Knox Hill, FL	ROAD ERODED AWAY NEAR WHITE CREEK.
Apr 15, 2:08 AM CDT	FLASH FLOOD	2 Sse Eucheeanna, FL	WATER OVER MCKINNON BRIDGE.

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, 6.7 hours before the alert went out and 156 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 127 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 840 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

595 
WGUS52 KTAE 150639
FFWTAE
FLC131-133-150945-
/O.NEW.KTAE.FF.W.0007.140415T0639Z-140415T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
139 AM CDT TUE APR 15 2014

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL WALTON COUNTY IN THE PANHANDLE OF FLORIDA...
  WESTERN WASHINGTON COUNTY IN THE PANHANDLE OF FLORIDA...
  THIS INCLUDES THE CITY OF VERNON...

* UNTIL 445 AM CDT

* AT 134 AM CDT...RADAR CONTINUES TO SHOW VERY HEAVY RAIN MOVING     
  REPEATEDLY OVER THE SAME AREAS. RADAR ESTIMATES THAT 4 TO 6 INCHES 
  OF RAIN HAS OCCURRED IN THE LAST FEW HOURS...AND AN ADDITIONAL 2   
  TO 4 INCHES IS POSSIBLE OVER THE NEXT FEW HOURS. FLASH FLOODING IS 
  LIKELY IN THIS AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW HOPE...
  MILLERS FERRY...HOLMES VALLEY...SYLVANIA...SMYRNA...SPRING
  HOLLOW...WHITEHEAD CROSSROADS...BROCK CROSSROAD...JOHNSON
  CROSSROADS...RIVERSIDE...RED HEAD...RED BAY...PORTLAND...POPLAR
  HEAD...KNOX HILL...HINSONS CROSSROADS...GREENHEAD...FREEPORT...FIVE
  POINTS...BRUCE AND LIVE OAK.

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.

REPORT FLOODING OR FLOOD DAMAGE TO THE NATIONAL WEATHER SERVICE IN
TALLAHASSEE AT (8 5 0) 9 4 2 8 8 3 3...OR YOU MAY CONTACT THE NEAREST
LAW ENFORCEMENT AGENCY.

&&

LAT...LON 3047 8625 3059 8610 3069 8593 3075 8565
      3075 8562 3077 8559 3044 8560 3044 8586
      3041 8588 3042 8593 3040 8597 3039 8610
      3047 8621

$$

42-DVD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 9:00 PM CDT	Severe Thunderstorm Warning	TAE	Walton	30 min
Apr 14, 10:50 PM CDT	Flash Flood Warning	TAE	Holmes, Walton, Washington	3 hr
Apr 14, 11:48 PM CDT	Flash Flood Warning	TAE	Jackson, Washington	4 hr
Apr 15, 1:01 AM CDT	Special Marine Warning	TAE		89 min
Apr 15, 2:12 AM CDT	Rip Current Statement	TAE	Bay, Franklin, Gulf, Walton	25 hr
Apr 15, 2:22 AM CDT	Special Marine Warning	TAE		83 min
Apr 15, 2:50 AM CDT	Flash Flood Warning	TAE	Bay, Calhoun, Gadsden, Jackson, Liberty, Washington	4 hr
Apr 15, 2:59 AM CDT	Freeze Watch	TAE	Walton	11 hr
Apr 15, 3:46 AM CDT	Tornado Warning	TAE	Calhoun, Liberty	44 min
Apr 15, 4:39 AM CDT	Areal Flood Advisory	TAE	Leon	2 hr
Apr 15, 5:02 AM CDT	Flash Flood Warning	TAE	Gadsden, Jefferson, Leon, Liberty, Wakulla	3 hr
Apr 15, 7:00 AM CDT	Special Marine Warning	TAE		2 hr
Apr 15, 8:57 AM CDT	River Flood Warning	TAE	Wakulla	10 days
Apr 15, 9:24 AM CDT	Special Marine Warning	TAE		96 min
Apr 15, 9:54 AM CDT	River Flood Warning	TAE	Calhoun	11 days

Nearby

Flash Flood Warnings in Florida, 2014 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.