Alert archive / Georgia / Flash Flood Watches in 2013

Flash Flood Watch 1, NWS Tallahassee, FL

February 11, 20134 counties in Florida; 16 counties in Georgia; 5 counties in Alabama

NWS Tallahassee, FL issued this flash flood watch at Feb 11, 2013, 5:16 AM CST for 4 counties in Florida; 16 counties in Georgia; 5 counties in Alabama. It took effect at Feb 11, 2013, 6:00 AM CST. It was in force for 47 hr.

The area

The counties it named.

The facts

Issued
Feb 11, 2013, 5:16 AM CST (11:16 UTC)
In effect from
Feb 11, 2013, 6:00 AM CST
Expired
Feb 13, 2013, 5:14 AM CST
In force
47 hr
Issued by
NWS Tallahassee, FL
Flood severity
None
All 25 counties

Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Holmes County, FL, Jackson County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Ben Hill County, GA, Calhoun County, GA, Clay County, GA, Dougherty County, GA, Early County, GA, Irwin County, GA, Lee County, GA, Miller County, GA, Quitman County, GA, Randolph County, GA, Seminole County, GA, Terrell County, GA, Tift County, GA, Turner County, GA, Worth County, GA

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.3 hours before the alert went out and 117 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 2013-02-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2013-02-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 186 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1066 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
186 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tallahassee, FL wrote its last area forecast discussion before this flash flood watch went out at Feb 11, 3:51 AM CST, 1 hour 25 minutes earlier.

Area forecast discussion, Feb 11, 3:51 AM CST, 1 hour 25 minutes before
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Hazardous weather outlook, Feb 11, 3:13 AM CST, 2 hours 3 minutes before
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In the hours before

Special weather statement, Feb 11, 12:23 AM CST, 4 hours 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
123 AM EST MON FEB 11 2013

ALZ068-069-110700-
GENEVA AL-HOUSTON AL-
1223 AM CST MON FEB 11 2013

...SIGNIFICANT WEATHER ADVISORY IN EFFECT FOR GENEVA AND HOUSTON
COUNTIES...

* UNTIL 100 AM CST

AT 1218 AM CST...THE NATIONAL WEATHER SERVICE HAS DETECTED STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES NORTH OF HARTFORD
TO HARTFORD TO 6 MILES SOUTHWEST OF HARTFORD...OR ALONG A LINE
EXTENDING FROM HIGH BLUFF TO HARTFORD TO KELLYS CROSSROADS...MOVING
EAST AT 45 MPH.

THESE STORMS WILL BE NEAR...
  TAYLOR BY 1235 AM CST.
  DOTHAN BY 1240 AM CST.
  WEBB BY 1250 AM CST.
  ASHFORD BY 1255 AM CST.

WINDS AROUND 50 MPH ARE EXPECTED WITH THESE STORMS.

THIS STORM IS ALSO PRODUCING TORRENTIAL DOWNPOURS WHICH MAY REDUCE
VISIBILITY AND CAUSE PONDING OF WATER ON ROADWAYS.

LAT...LON 3103 8578 3109 8572 3120 8572 3129 8513
      3121 8510 3117 8510 3116 8508 3101 8506
TIME...MOT...LOC 0622Z 262DEG 40KT 3120 8566 3110 8566
          3105 8570

18-WOOL
Local storm report, Feb 11, 3:58 AM CST, 1 hour 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
458 AM EST MON FEB 11 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0113 AM     TSTM WND DMG     GENEVA                  31.04N 85.88W
02/11/2013                   GENEVA             AL   911 CALL CENTER

            TREES REPORTED DOWN ACROSS THE COUNTY. TIME ESTIMATED BY
            RADAR.

&&

BLOCK

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 11, 6:50 AM CSTAreal Flood AdvisoryTAELeon, Liberty, Wakulla40 days
Feb 11, 11:46 AM CSTRiver Flood WarningTAEHolmes, Washington9 days
Feb 11, 11:48 AM CSTRiver Flood WarningTAEWalton11 days
Feb 11, 12:50 PM CSTSevere Thunderstorm WarningTAEJackson40 min
Feb 11, 5:32 PM CSTSevere Thunderstorm WarningTAEBay, Calhoun, Gulf43 min
Feb 10, 8:37 PM CSTSevere Thunderstorm WarningTAEClay, Early38 min
Feb 10, 9:03 PM CSTSevere Thunderstorm WarningTAEBaker, Calhoun, Clay, Early27 min
Feb 10, 9:30 PM CSTSpecial Weather StatementTAEBaker, Calhoun30 min
Feb 11, 1:02 AM CSTTornado WarningTAEEarly, Seminole28 min
Feb 11, 9:52 AM CSTAreal Flood AdvisoryTAEBaker, Calhoun, Dougherty, Early, Miller, Seminole3 hr
Feb 11, 10:52 AM CSTAreal Flood AdvisoryTAEBen Hill, Irwin, Tift, Turner, Worth3 hr
Feb 11, 10:56 AM CSTAreal Flood AdvisoryTAEClay, Lee, Randolph, Terrell3 hr
Feb 11, 11:37 AM CSTFlash Flood WarningTAEEarly, Miller113 min
Feb 11, 12:00 PM CSTRiver Flood WarningTAELee69 hr
Feb 11, 12:39 PM CSTAreal Flood AdvisoryTAEBaker, Dougherty111 min
Feb 11, 1:36 PM CSTAreal Flood AdvisoryTAEDecatur, Miller, Seminole114 min
Feb 10, 7:22 PM CSTTornado WarningTAECoffee23 min
Feb 10, 7:43 PM CSTTornado WarningTAECoffee, Dale32 min
Feb 10, 8:09 PM CSTSevere Thunderstorm WarningTAECoffee, Dale, Henry, Houston51 min
Feb 10, 9:19 PM CSTAreal Flood WarningTAECoffee, Dale, Geneva, Houston3 hr
Feb 10, 9:46 PM CSTAreal Flood WarningTAEDale, Houston3 hr
Feb 11, 12:23 AM CSTSpecial Weather StatementTAEHouston37 min
Feb 11, 12:44 AM CSTSevere Thunderstorm WarningTAEHouston31 min
Feb 11, 1:48 AM CSTAreal Flood WarningTAEGeneva117 min
Feb 11, 7:49 AM CSTFlash Flood WarningTAEGeneva, Houston116 min
Feb 11, 9:39 AM CSTFlash Flood WarningTAEGeneva, Houston6 hr
Feb 11, 12:14 PM CSTRiver Flood AdvisoryTAEDale36 hr
Feb 11, 12:14 PM CSTRiver Flood AdvisoryTAEGeneva36 hr
Feb 11, 3:33 PM CSTAreal Flood WarningTAEGeneva, Houston6 hr

Nearby

Flash Flood Watches in Georgia, 2013Flash Flood Watches in Alabama, 2013Flash Flood Watches in Florida, 2013Every flash flood watch in 2013

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.