Alert archive / Georgia / Tornado Watches in 2009

Tornado Watch 108

April 2, 20095 counties in Alabama; 29 counties in Florida; 40 counties in Georgia

The Storm Prediction Center issued this tornado watch at Apr 2, 2009, 2:00 PM CDT for 5 counties in Alabama; 29 counties in Florida; 40 counties in Georgia. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Apr 2, 2009, 2:00 PM CDT (19:00 UTC)
Expired: Apr 2, 2009, 9:00 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 74 counties

Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Alachua County, FL, Baker County, FL, Bay County, FL, Bradford County, FL, Calhoun County, FL, Clay County, FL, Columbia County, FL, Dixie County, FL, Duval County, FL, Franklin County, FL, Gadsden County, FL, Gilchrist County, FL, Gulf County, FL, Hamilton County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Nassau County, FL, Saint Johns County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Calhoun County, GA, Camden County, GA, Charlton County, GA, Clay County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Lee County, GA, Lowndes County, GA, Miller County, GA, Mitchell County, GA, Pierce County, GA, Quitman County, GA, Randolph County, GA, Seminole County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Worth County, GA

The radar

The Tallahassee radar (KTLH), 40 km from the middle of the area, began a volume at 19:01 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 50%
One or more EF2 to EF5 tornadoes: 30%
Ten or more severe wind reports: 60%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 60%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

30 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Apr 2, 2:28 PM CDT	Severe Thunderstorm Warning	TAE	Holmes, Walton	47 min
Apr 2, 2:56 PM CDT	Severe Thunderstorm Warning	TAE	Geneva	49 min
Apr 2, 3:38 PM CDT	Tornado Warning	TAE	Bay, Calhoun, Jackson, Washington	22 min
Apr 2, 3:41 PM CDT	Severe Thunderstorm Warning	TAE	Houston	49 min
Apr 2, 3:54 PM CDT	Tornado Warning	TAE	Calhoun, Gadsden, Jackson, Liberty	51 min
Apr 2, 4:20 PM CDT	Flash Flood Warning	TAE	Bay, Calhoun, Franklin, Gulf, Liberty, Walton and 1 more	115 min
Apr 2, 4:20 PM CDT	Severe Thunderstorm Warning	TAE	Gadsden, Liberty	55 min
Apr 2, 4:21 PM CDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Franklin, Gulf, Liberty, Washington	24 min
Apr 2, 4:26 PM CDT	Tornado Warning	TAE	Gadsden	49 min
Apr 2, 4:42 PM CDT	Severe Thunderstorm Warning	TAE	Calhoun, Liberty	33 min
Apr 2, 5:01 PM CDT	Severe Thunderstorm Warning	TAE	Franklin, Gulf, Liberty, Wakulla	44 min
Apr 2, 5:05 PM CDT	Severe Thunderstorm Warning	TAE	Gadsden, Leon	40 min
Apr 2, 5:09 PM CDT	Severe Thunderstorm Warning	TAE	Gadsden, Leon, Liberty	51 min
Apr 2, 5:35 PM CDT	Severe Thunderstorm Warning	TAE	Jefferson, Leon, Madison	55 min
Apr 2, 5:38 PM CDT	Severe Thunderstorm Warning	TAE	Franklin, Jefferson, Liberty, Wakulla	37 min
Apr 2, 6:00 PM CDT	Severe Thunderstorm Warning	TAE	Franklin, Jefferson, Taylor, Wakulla	45 min
Apr 2, 6:23 PM CDT	Severe Thunderstorm Warning	TAE	Jefferson, Madison	37 min
Apr 2, 6:29 PM CDT	Severe Thunderstorm Warning	TAE	Berrien, Cook, Lanier, Lowndes	46 min
Apr 2, 6:35 PM CDT	Severe Thunderstorm Warning	JAX	Columbia, Hamilton, Suwannee	55 min
Apr 2, 6:43 PM CDT	Severe Thunderstorm Warning	TAE	Lafayette, Taylor	32 min
Apr 2, 6:58 PM CDT	Severe Thunderstorm Warning	TAE	Madison	32 min
Apr 2, 7:05 PM CDT	Tornado Warning	TAE	Madison	25 min
Apr 2, 7:14 PM CDT	Tornado Warning	JAX	Hamilton	18 min
Apr 2, 7:15 PM CDT	Severe Thunderstorm Warning	JAX	Baker, Columbia, Hamilton, Suwannee	60 min
Apr 2, 7:23 PM CDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	29 min
Apr 2, 7:44 PM CDT	Severe Thunderstorm Warning	JAX	Clay, Duval, Nassau, Saint Johns	46 min
Apr 2, 7:44 PM CDT	Tornado Warning	JAX	Columbia, Hamilton	18 min
Apr 2, 7:56 PM CDT	Severe Thunderstorm Warning	JAX	Baker, Duval, Nassau	49 min
Apr 2, 8:15 PM CDT	Severe Thunderstorm Warning	JAX	Baker, Columbia, Hamilton, Suwannee	45 min
Apr 2, 8:28 PM CDT	Severe Thunderstorm Warning	JAX	Bradford, Clay, Duval, Saint Johns	47 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 7.0 hours before the alert went out and 40 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1561 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 484 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 297 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 6.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 2, 3:12 AM CDT	Mesoscale Discussion	SPC	Chambers, Clay, Cleburne, Lee, Randolph, Tallapoosa	63 min
Apr 2, 5:57 AM CDT	Mesoscale Discussion	SPC	Baldwin, Barbour, Bullock, Butler, Coffee, Conecuh and 9 more	63 min
Apr 2, 6:29 AM CDT	Tornado Watch	SPC	Baldwin, Barbour, Bullock, Butler, Choctaw, Clarke and 19 more	8 hr
Apr 2, 10:06 AM CDT	Mesoscale Discussion	SPC	Dale, Geneva, Henry, Houston	54 min
Apr 2, 1:09 PM CDT	Mesoscale Discussion	SPC	Autauga, Baldwin, Bibb, Blount, Butler, Calhoun and 45 more	66 min
Apr 2, 1:33 PM CDT	Tornado Watch	SPC	Autauga, Baldwin, Bibb, Blount, Butler, Chilton and 36 more	5 hr
Apr 2, 3:42 PM CDT	Mesoscale Discussion	SPC	Autauga, Bibb, Blount, Butler, Chilton, Coffee and 29 more	63 min
Apr 2, 5:25 PM CDT	Mesoscale Discussion	SPC	Calhoun, Cherokee, Cleburne, DeKalb	95 min
Apr 2, 6:02 PM CDT	Tornado Watch	SPC	Autauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 38 more	7 hr
Apr 1, 11:52 PM CDT	Mesoscale Discussion	SPC	Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 7 more	113 min
Apr 2, 7:31 AM CDT	Tornado Watch	SPC	Alachua, Baker, Bradford, Clay, Columbia, Duval and 6 more	6 hr
Apr 2, 12:17 PM CDT	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Clay, Columbia, Dixie and 13 more	58 min
Apr 2, 6:28 PM CDT	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Clay, Columbia, Duval and 8 more	92 min

Nearby

Tornado Watches in Georgia, 2009 Tornado Watches in Florida, 2009 Tornado Watches in Alabama, 2009 Every tornado watch in 2009

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.