Alert archive / Florida / Flash Flood Warnings in 2015

Flash Flood Warning 21, NWS Tallahassee, FL

September 28, 2015Holmes County, Florida

NWS Tallahassee, FL issued this flash flood warning at Sep 28, 2015, 10:14 PM CDT for Holmes County, Florida. It was in force for 3 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
Sep 28, 2015, 10:14 PM CDT (03:14 UTC)
Expired
Sep 29, 2015, 1:15 AM CDT
In force
3 hr
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Flood severity
None

County Holmes County, FL

The radar

The Eglin Afb radar (KEVX), 28 km from the middle of the area, began a volume at 03:17 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, 3.2 hours before the alert went out and 158 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 2015-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 538 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 2015-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.193958Sfc1 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
538 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
810 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
118 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.9

Open this sounding in Storm Lab

The text

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

343 
WGUS52 KTAE 290314
FFWTAE
FLC059-290615-
/O.NEW.KTAE.FF.W.0021.150929T0314Z-150929T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1014 PM CDT MON SEP 28 2015

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN HOLMES COUNTY IN THE PANHANDLE OF FLORIDA...

* UNTIL 115 AM CDT
    
* AT 1012 PM CDT...DOPPLER RADAR INDICATED VERY HEAVY RAIN MOVING 
  INTO WESTERN HOLMES COUNTY. RADAR ESTIMATES THAT AROUND 4 INCHES 
  OF RAIN HAS ALREADY FALLEN TODAY IN WESTERN HOLMES COUNTY AND THE 
  GROUND IS ALREADY SATURATED. FLASH FLOODING IS EXPECTED TO BEGIN 
  SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PONCE DE LEON...CARYVILLE...WESTVILLE...CERROGORDO...ROYALS
  CROSSROADS...BARKER STORE...BAKER SETTLEMENT...HICKORY HILL...NEW
  HOPE...PROSPERITY...GRITNEY...SWEETGUM HEAD...ARRANT SETTLEMENT...
  IZAGORA AND LEONIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3099 8603 3099 8579 3079 8581 3079 8582
      3078 8582 3078 8583 3074 8583 3071 8584
      3070 8585 3071 8604

$$

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 7:55 PM CDTSpecial Marine WarningTAE65 min
Sep 28, 8:14 PM CDTFlash Flood WarningTAEBay, Walton, Washington3 hr
Sep 28, 8:54 PM CDTSpecial Marine WarningTAE2 hr
Sep 28, 9:08 PM CDTFlash Flood WarningTAEWalton2 hr
Sep 28, 11:42 PM CDTFlash Flood WarningTAEHolmes, Washington93 min
Sep 29, 12:45 AM CDTFlash Flood WarningTAEJackson90 min
Sep 29, 2:12 AM CDTFlash Flood WarningTAEJackson93 min
Sep 29, 5:28 AM CDTRiver Flood WarningTAEWalton30 hr
Sep 29, 9:09 AM CDTAreal Flood WarningTAEWalton12 hr
Sep 29, 10:54 AM CDTAreal Flood WarningTAEWalton12 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.