Alert archive / Georgia / Tornado Watches in 2010

Tornado Watch 758

November 30, 201020 counties in Alabama; 10 counties in Florida; 74 counties in Georgia

The Storm Prediction Center issued this tornado watch at Nov 30, 2010, 7:43 AM CST for 20 counties in Alabama; 10 counties in Florida; 74 counties in Georgia. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Nov 30, 2010, 7:43 AM CST (13:43 UTC)
Expired
Nov 30, 2010, 4:00 PM CST
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 104 counties

Baldwin County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Macon County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Bartow County, GA, Bibb County, GA, Butts County, GA, Calhoun County, GA, Carroll County, GA, Catoosa County, GA, Chattahoochee County, GA, Chattooga County, GA, Cherokee County, GA, Clay County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Crawford County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Dooly County, GA, Dougherty County, GA, Douglas County, GA, Early County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Gwinnett County, GA, Hall County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Jasper County, GA, Jones County, GA, Lamar County, GA, Lee County, GA, Lumpkin County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Monroe County, GA, Murray County, GA, Muscogee County, GA, Newton County, GA, Paulding County, GA, Peach County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Quitman County, GA, Randolph County, GA, Rockdale 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, Towns County, GA, Troup County, GA, Twiggs County, GA, Union County, GA, Upson County, GA, Walker County, GA, Webster County, GA, White County, GA, Whitfield 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
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
10%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Nov 30, 10:08 AM CSTSevere Thunderstorm WarningBMXCoosa, Elmore, Lowndes, Montgomery, Tallapoosa52 min
Nov 30, 10:24 AM CSTSevere Thunderstorm WarningFFCFloyd18 min
Nov 30, 10:54 AM CSTSevere Thunderstorm WarningBMXChambers, Elmore, Lee, Tallapoosa51 min
Nov 30, 10:59 AM CSTSevere Thunderstorm WarningMOBCovington18 min
Nov 30, 11:09 AM CSTSevere Thunderstorm WarningFFCPolk36 min
Nov 30, 11:16 AM CSTSevere Thunderstorm WarningFFCFannin, Murray, Whitfield44 min
Nov 30, 11:31 AM CSTSevere Thunderstorm WarningFFCHaralson29 min
Nov 30, 11:46 AM CSTSevere Thunderstorm WarningBMXChambers29 min
Nov 30, 11:48 AM CSTSevere Thunderstorm WarningFFCBartow, Cherokee, Gordon, Pickens42 min
Nov 30, 11:54 AM CSTSevere Thunderstorm WarningMOBCovington22 min
Nov 30, 11:57 AM CSTSevere Thunderstorm WarningBMXBullock, Pike48 min
Nov 30, 11:59 AM CSTSevere Thunderstorm WarningFFCBartow, Cherokee, Cobb, Paulding, Polk46 min
Nov 30, 12:16 PM CSTTornado WarningBMXBullock, Pike44 min
Nov 30, 12:37 PM CSTSevere Thunderstorm WarningBMXLee, Russell38 min
Nov 30, 12:55 PM CSTSevere Thunderstorm WarningTAEBay35 min
Nov 30, 1:16 PM CSTSevere Thunderstorm WarningBMXLee, Russell14 min
Nov 30, 1:29 PM CSTSevere Thunderstorm WarningBMXBarbour, Russell46 min
Nov 30, 3:03 PM CSTSevere Thunderstorm WarningFFCButts, Henry, Lamar, Newton, Spalding42 min
Nov 30, 3:12 PM CSTTornado WarningFFCButts, Henry, Newton33 min
Nov 30, 3:22 PM CSTSevere Thunderstorm WarningFFCGwinnett, Newton, Walton23 min
Nov 30, 3:37 PM CSTSevere Thunderstorm WarningFFCMorgan, Newton, Walton38 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

Birmingham, AL (KBMX), launched 12:00Z, 1.7 hours before the alert went out and 130 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, Birmingham, AL at 12:00Z on 2010-11-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 444 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, Birmingham, AL at 12:00Z on 2010-11-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 385 square meters per square second.1939587897Sfc1 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
444 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
484 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
385 m²/s²
0-3 km storm-relative helicity
473 m²/s²
Significant tornado parameter
1.2
Supercell composite
4.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 29, 10:57 PM CSTMesoscale DiscussionSPCBlount, Cullman, DeKalb, Fayette, Franklin, Jackson and 11 more93 min
Nov 29, 11:41 PM CSTTornado WatchSPCBibb, Blount, Colbert, Cullman, DeKalb, Etowah and 23 more4 hr
Nov 30, 1:44 AM CSTMesoscale DiscussionSPCCullman, Fayette, Greene, Hale, Pickens, Sumter and 3 more91 min
Nov 30, 3:17 AM CSTMesoscale DiscussionSPCAutauga, Bibb, Blount, Butler, Calhoun, Chambers and 36 more58 min
Nov 30, 3:39 AM CSTMesoscale DiscussionSPCBlount, Cullman, Jefferson, Tuscaloosa, Walker96 min
Nov 30, 3:49 AM CSTTornado WatchSPCAutauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 34 more8 hr
Nov 30, 6:30 AM CSTMesoscale DiscussionSPCBibb, Blount, Calhoun, Chilton, Choctaw, Clarke and 14 more90 min
Nov 30, 7:00 AM CSTMesoscale DiscussionSPCBaldwin, Barbour, Bullock, Butler, Chambers, Coffee and 18 more60 min
Nov 30, 9:38 AM CSTMesoscale DiscussionSPCAutauga, Bullock, Butler, Calhoun, Chambers, Cherokee and 20 more97 min
Nov 30, 12:17 PM CSTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bibb, Bleckley, Butts and 65 more118 min
Nov 30, 1:15 PM CSTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Brantley, Bryan, Bulloch and 27 more2 hr
Nov 30, 1:34 PM CSTTornado WatchSPCBaldwin, Banks, Barrow, Bibb, Bleckley, Burke and 79 more7 hr
Nov 30, 3:24 PM CSTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bibb, Bleckley, Burke and 54 more96 min

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.