Alert archive / Florida / Flash Flood Warnings in 2012

Flash Flood Warning 15, NWS Tallahassee, FL

June 25, 2012Jefferson County, Madison County, Florida

NWS Tallahassee, FL issued this flash flood warning at Jun 25, 2012, 4:56 PM EDT for Jefferson County, Madison County, Florida. It was in force for 3 hr. 2 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
Jun 25, 2012, 4:56 PM EDT (20:56 UTC)
Expired
Jun 25, 2012, 8:00 PM EDT
In force
3 hr
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Flood severity
None

Counties Jefferson County, FL, Madison County, FL

The radar

The Tallahassee radar (KTLH), 72 km from the middle of the area, began a volume at 20:59 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
Jun 25, 6:00 PM EDTHEAVY RAIN 4.99Madison, FLSINCE MIDNIGHT.
Jun 25, 7:36 PM EDTFLASH FLOODE Wacissa Springs, FLSEVERAL FEET OF WATER IN HOMEOWNERS YARD.

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, 8.9 hours before the alert went out and 69 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 2012-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 81 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2012-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
81 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
600 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
47 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.

539 
WGUS52 KTAE 252056
FFWTAE
FLC065-079-260000-
/O.NEW.KTAE.FF.W.0015.120625T2056Z-120626T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
456 PM EDT MON JUN 25 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL JEFFERSON COUNTY IN FLORIDA...
  SOUTHERN MADISON COUNTY IN FLORIDA...

* UNTIL 800 PM EDT

* AT 448 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED FLASH    
  FLOODING FROM INTENSE RAIN BANDS OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO            
  MADISON...GREENVILLE...AUCILLA...AND WAUKEENAH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

RADAR ESTIMATES RAINFALL AMOUNTS OF 3 TO 5 INCHES OVER THE PAST 
SEVERAL HOURS.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN THE 
WARNED AREA THROUGH THE EARLY EVENING HOURS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...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 OR YOUR COUNTY EMERGENCY MANAGEMENT. 
THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3025 8324 3026 8346 3030 8347 3030 8382
      3025 8391 3022 8392 3022 8408 3043 8408
      3046 8404 3050 8403 3049 8324 3047 8322
      3043 8322 3042 8319 3039 8317

$$

25-CAMP

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 4:21 AM EDTTornado WarningTAETaylor24 min
Jun 25, 11:31 AM EDTRiver Flood WarningTAEWakulla9 days
Jun 25, 11:37 AM EDTFlash Flood WarningTAELiberty, Wakulla6 hr
Jun 25, 1:45 PM EDTFlash Flood WarningTAELeon3 hr
Jun 25, 4:42 PM EDTFlash Flood WarningTAELeon3 hr
Jun 25, 5:22 PM EDTFlash Flood Warning EmergencyTAEFranklin, Liberty, Wakulla12 hr
Jun 25, 6:18 PM EDTRiver Flood WarningTAEWakulla4 days
Jun 25, 7:37 PM EDTFlash Flood WarningTAELeon6 hr
Jun 25, 7:49 PM EDTFlash Flood WarningTAEJefferson, Madison5 hr
Jun 25, 7:55 PM EDTFlash Flood WarningTAEJefferson, Madison, Taylor6 hr

Nearby

Flash Flood Warnings in Florida, 2012Every flash flood warning in 2012

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.