Alert archive / Florida / Flash Flood Warnings in 2015

Flash Flood Warning 9, NWS Tallahassee, FL

July 19, 2015Leon County, Florida

NWS Tallahassee, FL issued this flash flood warning at Jul 19, 2015, 7:01 PM EDT for Leon County, Florida. It was in force for 119 min. 1 report 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
Jul 19, 2015, 7:01 PM EDT (23:01 UTC)
Expired
Jul 19, 2015, 9:00 PM EDT
In force
119 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Flood severity
None

County Leon County, FL

The radar

The Tallahassee radar (KTLH), 13 km from the middle of the area, began a volume at 23:03 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

TimeReportWhereRemark
Jul 19, 7:15 PM EDTHEAVY RAIN 2.65Southwood, FLSOUTHWOOD GOLF COURSE MEASURED 2.65 INCHES OF RAIN IN AN HOUR.

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 12:00Z, 11.0 hours before the alert went out and 11 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 2015-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 808 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 2015-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
808 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
1252 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
20 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.

642 
WGUS52 KTAE 192301
FFWTAE
FLC073-200100-
/O.NEW.KTAE.FF.W.0009.150719T2301Z-150720T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
701 PM EDT SUN JUL 19 2015

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN LEON COUNTY IN THE BIG BEND OF FLORIDA...

* UNTIL 900 PM EDT
    
* AT 657 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  THUNDERSTORM PRODUCING HEAVY RAIN ABOUT 3 MILES EAST OF 
  TALLAHASSEE...OR NEAR SOUTHWOOD. UP TO THREE INCHES OF RAIN HAS 
  ALREADY FALLEN WITH AN ADDITIONAL TWO INCHES POSSIBLE OVER THE 
  NEXT HOUR. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...  
  CHAIRES...CAPITOLA...APALACHEE REGIONAL PARK...CHAIRES 
  CROSSROADS...RALFORD GREENWAY AND SOUTHWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD 
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3030 8424 3037 8431 3048 8417 3045 8408
      3034 8412

$$

38-GODSEY
2 follow-up statements
457 
WGUS72 KTAE 192338
FFSTAE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
738 PM EDT SUN JUL 19 2015

FLC073-200100-
/O.CON.KTAE.FF.W.0009.000000T0000Z-150720T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LEON FL-
738 PM EDT SUN JUL 19 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM EDT FOR
SOUTHEASTERN LEON COUNTY...

AT 736 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS ACROSS EASTERN LEON COUNTY WERE SLOWLY WEAKENING. 
HOWEVER...THESE STORMS HAVE ALREADY PRODUCED OVER 4 INCHES OF RAIN 
SINCE 6 PM. AN ADDITIONAL INCH OF RAINFALL IS EXPECTED OVER THE NEXT 
HOUR. FLASH FLOODING IS EXPECTED TO BEGIN SOON ACROSS THE WARNING 
AREA. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
CHAIRES...CAPITOLA...APALACHEE REGIONAL PARK...RALFORD GREENWAY... 
AND SOUTHWOOD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD 
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3030 8424 3037 8431 3048 8417 3045 8408
      3034 8412

$$

38-GODSEY
709 
WGUS72 KTAE 200019
FFSTAE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
819 PM EDT SUN JUL 19 2015

FLC073-200028-
/O.CAN.KTAE.FF.W.0009.000000T0000Z-150720T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LEON FL-
819 PM EDT SUN JUL 19 2015

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN LEON COUNTY IS
CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO 
POSE A SIGNIFICANT THREAT. TO REPORT FLOODING...CONTACT YOUR NEAREST 
LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL 
WEATHER SERVICE OFFICE IN TALLAHASSEE.

&&

LAT...LON 3030 8424 3037 8431 3048 8417 3045 8408
      3034 8412

$$

38-GODSEY

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 2:48 AM EDTHeat AdvisoryTAEBay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more17 hr
Jul 19, 10:55 AM EDTRip Current StatementTAEFranklin13 hr
Jul 19, 2:16 PM EDTSevere Thunderstorm WarningTAEBay, Walton, Washington44 min
Jul 19, 3:22 PM EDTSevere Thunderstorm WarningTAEJackson53 min
Jul 19, 4:00 PM EDTSevere Thunderstorm WarningTAECalhoun, Holmes, Jackson, Washington60 min
Jul 19, 4:48 PM EDTSevere Thunderstorm WarningTAEBay, Calhoun42 min
Jul 19, 5:13 PM EDTSevere Thunderstorm WarningTAELafayette32 min
Jul 19, 5:22 PM EDTSevere Thunderstorm WarningTAEBay, Calhoun, Franklin, Gulf, Liberty54 min
Jul 19, 5:30 PM EDTSpecial Marine WarningTAE90 min
Jul 19, 6:46 PM EDTAreal Flood AdvisoryTAELeon119 min
Jul 19, 6:58 PM EDTSevere Thunderstorm WarningTAEJefferson, Leon, Wakulla32 min

Nearby

Flash Flood Warnings in Florida, 2015Every flash flood warning in 2015

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.