Alert archive / Georgia / Tornado Watches in 2010
Tornado Watch 101
The Storm Prediction Center issued this tornado watch at Apr 24, 2010, 10:46 PM CDT for 18 counties in Alabama; 10 counties in Florida; 56 counties in Georgia. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 24, 2010, 10:46 PM CDT (03:46 UTC)
- Expired
- Apr 25, 2010, 6:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 84 counties
Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Coffee County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Tallapoosa County, AL, Bay County, FL, Calhoun County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Liberty County, FL, Okaloosa County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Bibb County, GA, Brooks County, GA, Butts County, GA, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Clayton County, GA, Colquitt County, GA, Cook County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Fayette County, GA, Grady County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Irwin County, GA, Lamar County, GA, Lanier County, GA, Lee County, GA, Lowndes County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Muscogee County, GA, Peach County, GA, Pike County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Troup County, GA, Turner County, GA, Upson County, GA, Webster County, GA, Worth County, GA
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 30%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 10:54 PM CDT | Severe Thunderstorm Warning | BMX | Barbour | 26 min |
| Apr 24, 11:35 PM CDT | Severe Thunderstorm Warning | FFC | Crawford, Marion, Talbot, Taylor, Upson | 40 min |
| Apr 25, 12:00 AM CDT | Severe Thunderstorm Warning | FFC | Butts, Jasper, Jones, Lamar, Monroe | 30 min |
| Apr 25, 3:57 AM CDT | Severe Thunderstorm Warning | FFC | Crisp, Dooly, Pulaski, Wilcox | 23 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 3.8 hours before the alert went out and 147 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.
- Mixed-layer CAPE
- 92 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 587 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 604 m²/s²
- 0-3 km storm-relative helicity
- 815 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
988
WWUS20 KWNS 250347
SEL1
SPC WW 250347
ALZ000-FLZ000-GAZ000-251100-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 101
NWS STORM PREDICTION CENTER NORMAN OK
1045 PM CDT SAT APR 24 2010
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEASTERN ALABAMA
THE WESTERN AND CENTRAL FLORIDA PANHANDLE
WESTERN GEORGIA
EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1045 PM
UNTIL 600 AM CDT.
TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF MACON
GEORGIA TO 20 MILES SOUTH SOUTHWEST OF CRESTVIEW FLORIDA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU1).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 98...WW 99...WW 100...
DISCUSSION...TSTMS ARE FORMING ALONG SSW-NNE LOW LVL CONFLUENCE ZONE
ACROSS THE WRN FL PANHANDLE AND SE AL. THIS MAY REFLECT INCREASING
CONVERGENCE ALONG THE ZONE IN RESPONSE TO EWD SPREAD OF PRESSURE
FALLS ACROSS THE OH VLY WITH DEEPENING UPR TROUGH /REF MCD 385/.
STRENGTH OF LOW LVL SPEED/DIRECTIONAL SHEAR AND QUALITY OF MOISTURE
INFLOW SUGGEST A CONDITIONAL THREAT FOR TORNADOES WITH ANY UPDRAFTS
ABLE TO BECOME SUSTAINED AND ASSUME SUPERCELL CHARACTERISTICS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 24040.
...CORFIDISPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 7:11 PM CDT | Tornado Watch | SPC | Autauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 27 more | 7 hr |
| Apr 24, 7:19 PM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Clarke, Coffee, Conecuh, Covington and 11 more | 56 min |
| Apr 24, 9:58 PM CDT | Mesoscale Discussion | SPC | Baldwin, Barbour, Bullock, Butler, Chambers, Coffee and 13 more | 32 min |
| Apr 24, 11:27 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 25 more | 63 min |
| Apr 25, 3:01 AM CDT | Mesoscale Discussion | SPC | Henry, Houston | 89 min |
| Apr 25, 5:38 AM CDT | Mesoscale Discussion | SPC | Calhoun, Gadsden, Leon, Liberty | 67 min |
| Apr 25, 11:00 AM CDT | Mesoscale Discussion | SPC | Alachua, Bradford, Citrus, Dixie, Flagler, Gilchrist and 11 more | 60 min |
| Apr 25, 11:18 AM CDT | Tornado Watch | SPC | Alachua, Bradford, Citrus, Clay, Dixie, Flagler and 12 more | 8 hr |
| Apr 25, 1:25 PM CDT | Mesoscale Discussion | SPC | Flagler, Marion, Putnam, Volusia | 65 min |
| Apr 25, 3:17 PM CDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 11 more | 58 min |
| Apr 25, 5:25 PM CDT | Mesoscale Discussion | SPC | Brevard, Hardee, Hillsborough, Lake, Manatee, Orange and 8 more | 65 min |
| Apr 25, 5:56 PM CDT | Severe Thunderstorm Watch | SPC | Brevard, Charlotte, DeSoto, Hardee, Hernando, Highlands and 15 more | 5 hr |
| Apr 24, 11:55 PM CDT | Mesoscale Discussion | SPC | Banks, Barrow, Butts, Clarke, Columbia, Elbert and 25 more | 35 min |
| Apr 25, 12:17 AM CDT | Tornado Watch | SPC | Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 101 more | 8 hr |
Nearby
Tornado Watches in Georgia, 2010Tornado Watches in Alabama, 2010Tornado Watches in Florida, 2010Every tornado 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.