Alert archive / Georgia / Flash Flood Watches in 2010

Flash Flood Watch 2, NWS Tallahassee, FL

May 3, 201016 counties in Florida; 26 counties in Georgia; 5 counties in Alabama

NWS Tallahassee, FL issued this flash flood watch at May 3, 2010, 4:25 AM CDT for 16 counties in Florida; 26 counties in Georgia; 5 counties in Alabama. It took effect at May 3, 2010, 7:00 AM CDT. It was in force for 34 hr.

The area

The counties it named.

The facts

Issued
May 3, 2010, 4:25 AM CDT (09:25 UTC)
In effect from
May 3, 2010, 7:00 AM CDT
Expired
May 4, 2010, 5:18 PM CDT
In force
34 hr
Issued by
NWS Tallahassee, FL
Flood severity
None
All 47 counties

Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Dixie County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Madison County, FL, Taylor County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Brooks County, GA, Calhoun County, GA, Clay County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Grady County, GA, Irwin County, GA, Lanier County, GA, Lee County, GA, Lowndes County, GA, Miller County, GA, Mitchell County, GA, Quitman County, GA, Randolph County, GA, Seminole County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Worth County, GA

The radar

The Tallahassee radar (KTLH), 66 km from the middle of the area, began a volume at 09:28 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 9.4 hours before the alert went out and 265 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, Peachtre/Fal Fld, GA at 00:00Z on 2010-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 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, Peachtre/Fal Fld, GA at 00:00Z on 2010-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 150 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
20 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
1598 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
150 m²/s²
0-3 km storm-relative helicity
250 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 May 3, 2:53 AM CDT, 1 hour 32 minutes earlier.

Area forecast discussion, May 3, 2:53 AM CDT, 1 hour 32 minutes before
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Hazardous weather outlook, May 2, 9:33 PM CDT, 6 hours 52 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1033 PM EDT SUN MAY 2 2010

ALZ065>069-FLZ007>019-026>029-034-108-112-114-115-118-127-128-134-
GAZ120>131-142>148-155>161-GMZ730-750-755-765-770-775-031000-
COFFEE-DALE-HENRY-GENEVA-HOUSTON-INLAND WALTON-CENTRAL WALTON-
HOLMES-WASHINGTON-JACKSON-INLAND BAY-CALHOUN-INLAND GULF-
INLAND FRANKLIN-GADSDEN-LEON-INLAND JEFFERSON-MADISON-LIBERTY-
INLAND WAKULLA-INLAND TAYLOR-LAFAYETTE-INLAND DIXIE-SOUTH WALTON-
COASTAL BAY-COASTAL GULF-COASTAL FRANKLIN-COASTAL JEFFERSON-
COASTAL WAKULLA-COASTAL TAYLOR-COASTAL DIXIE-QUITMAN-CLAY-
RANDOLPH-TERRELL-DOUGHERTY-LEE-WORTH-TURNER-TIFT-BEN HILL-IRWIN-
EARLY-MILLER-BAKER-MITCHELL-COLQUITT-COOK-BERRIEN-SEMINOLE-
DECATUR-GRADY-THOMAS-BROOKS-LOWNDES-LANIER-
APALACHEE BAY OR COASTAL WATERS FROM KEATON BEACH TO OCHLOCKONEE
RIVER FL OUT TO 20 NM-
COASTAL WATERS FROM APALACHICOLA TO DESTIN FL OUT 20 NM-
COASTAL WATERS FROM  OCHLOCKONEE RIVER TO APALACHICOLA FL OUT TO
20 NM-
COASTAL WATERS FROM  SUWANNEE RIVER TO KEATON BEACH OUT 20 NM-
WATERS FROM APALACHICOLA TO DESTIN FL FROM 20 TO 60 NM-
WATERS FROM  SUWANNEE RIVER TO APALACHICOLA FL FROM 20 TO 60 NM-
1033 PM EDT SUN MAY 2 2010 /933 PM CDT SUN MAY 2 2010/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST ALABAMA...
SOUTHWEST AND SOUTH CENTRAL GEORGIA...AND THE FLORIDA BIG BEND
AND PANHANDLE...AND ADJACENT COASTAL WATERS.

...A HIGH SURF ADVISORY IS IN EFFECT THROUGH MONDAY FOR THE
PANHANDLE BEACHES...

...THERE IS A HIGH RISK OF RIP CURRENTS THROUGH MONDAY ALONG THE
FLORIDA PANHANDLE AND BIG BEND BEACHES...

...A FLOOD WATCH IS IN EFFECT FOR SOUTHEAST ALABAMA...THE INLAND
FLORIDA PANHANDLE...AND PORTIONS OF SOUTH GEORGIA FROM MONDAY
MORNING THROUGH TUESDAY EVENING...

.DAY ONE...TONIGHT... SEVERAL DAYS OF MODERATELY STRONG ONSHORE
WINDS HAVE GENERATED LARGE SURF AND THAT SURF WILL CONTINUE
OVERNIGHT. BREAKERS OF 6 TO 8 FEET WILL BE COMMON ALONG THE
PANHANDLE COAST WITH OCCASIONAL 5 FOOT SURF EVEN AT SAINT GEORGE
ISLAND. ACCORDINGLY...THERE IS A HIGH RISK FOR RIP CURRENTS FOR
THROUGH MONDAY. A SMALL CRAFT ADVISORY IS IN EFFECT AND HAS BEEN
EXTENDED EASTWARD TO THE OCHLOCKONEE RIVER. SEAS WILL BE A BIT
LOWER FURTHER EAST...BUT MARINERS ARE STILL ENCOURAGED TO EXERCISE
CAUTION.

SHOWERS AND THUNDERSTORMS WILL BEGIN TO WORK THEIR WAY INTO THE
REGION FROM THE WEST OVERNIGHT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

AS A FRONTAL SYSTEM GRADUALLY APPROACHES FROM THE WEST...SHOWERS
AND THUNDERSTORMS WILL GRADUALLY INCREASE IN COVERAGE FROM WEST TO
EAST. IT IS POSSIBLE THAT ISOLATED STRONG TO SEVERE STORMS WILL
OCCUR MONDAY AND TUESDAY. HEAVY RAIN IS ALSO EXPECTED WITH THIS
SYSTEM GIVEN THE ABUNDANT DEEP MOISTURE AND SLOW MOVEMENT. SOME
AREAS ARE EXPECTED TO RECEIVE UP TO 6 INCHES OF RAINFALL THROUGH
LATE TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE
WEBSITE ON THE INTERNET AT WEATHER.GOV...THEN CLICK ON YOUR AREA
OF INTEREST ON THE NATIONAL MAP.

WOOL/CAMP

The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 8:45 AM CDTMarine Dense Fog AdvisoryTAE6 hr
May 3, 3:39 PM CDTAreal Flood AdvisoryTAEWalton2 hr
May 3, 4:55 PM CDTAreal Flood WarningTAEWalton2 hr
May 3, 5:13 PM CDTAreal Flood WarningTAEHolmes, Washington2 hr
May 3, 6:26 PM CDTMarine Dense Fog AdvisoryTAE15 hr

Nearby

Flash Flood Watches in Georgia, 2010Flash Flood Watches in Florida, 2010Flash Flood Watches in Alabama, 2010Every flash flood watch in 2010

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.