Alert archive / Georgia / Tornado Watches in 2020

Tornado Watch 77

March 31, 202032 counties in Alabama; 13 counties in Florida; 73 counties in Georgia

The Storm Prediction Center issued this tornado watch at Mar 31, 2020, 8:51 AM CDT for 32 counties in Alabama; 13 counties in Florida; 73 counties in Georgia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 31, 2020, 8:51 AM CDT (13:51 UTC)
Expired
Mar 31, 2020, 3:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
0.5 in
Strongest gust expected
60 kt
All 118 counties

Autauga County, AL, Baldwin County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Clarke County, AL, Clay County, AL, Coffee County, AL, Conecuh County, AL, Coosa County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Dallas County, AL, Elmore County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Mobile County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Tallapoosa County, AL, Washington County, AL, Wilcox County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Leon County, FL, Liberty County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Baldwin County, GA, Ben Hill County, GA, Bibb County, GA, Bleckley County, GA, Butts County, GA, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Clayton County, GA, Colquitt County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Fayette County, GA, Glascock County, GA, Grady County, GA, Greene County, GA, Hancock County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Irwin County, GA, Jasper County, GA, Jefferson County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Laurens County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Morgan County, GA, Muscogee County, GA, Newton County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Putnam 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, Taliaferro County, GA, Taylor County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Troup County, GA, Turner County, GA, Twiggs County, GA, Upson County, GA, Warren County, GA, Washington County, GA, Webster County, GA, Wilcox County, GA, Wilkinson County, GA, Worth County, GA

The radar

The Ft Rucker radar (KEOX), 86 km from the middle of the area, began a volume at 13:54 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
20%
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
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 31, 9:06 AM CDTSevere Thunderstorm WarningBMXChambers, Randolph, Tallapoosa54 min
Mar 31, 9:08 AM CDTSevere Thunderstorm WarningMOBMobile37 min
Mar 31, 9:11 AM CDTTornado WarningMOBButler, Wilcox34 min
Mar 31, 9:20 AM CDTSevere Thunderstorm WarningMOBBaldwin, Butler, Clarke, Conecuh, Crenshaw, Escambia and 4 more55 min
Mar 31, 9:22 AM CDTSevere Thunderstorm WarningBMXLowndes38 min
Mar 31, 9:31 AM CDTSevere Thunderstorm WarningFFCCarroll, Coweta, Heard, Meriwether, Troup59 min
Mar 31, 9:46 AM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile, Washington44 min
Mar 31, 9:54 AM CDTTornado Warning Tornado observedMOBMobile35 min
Mar 31, 10:00 AM CDTTornado WarningMOBBaldwin, Escambia45 min
Mar 31, 10:01 AM CDTTornado WarningMOBConecuh, Escambia44 min
Mar 31, 10:03 AM CDTSevere Thunderstorm WarningBMXBullock, Pike57 min
Mar 31, 10:07 AM CDTSevere Thunderstorm WarningMOBBaldwin, Butler, Conecuh, Covington, Crenshaw, Escambia and 2 more53 min
Mar 31, 10:16 AM CDTSevere Thunderstorm WarningFFCButts, Clayton, Coweta, DeKalb, Fayette, Fulton and 3 more44 min
Mar 31, 10:18 AM CDTTornado WarningTAEGeneva27 min
Mar 31, 10:25 AM CDTTornado WarningMOBConecuh, Escambia40 min
Mar 31, 10:26 AM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile39 min
Mar 31, 10:28 AM CDTSevere Thunderstorm WarningTAECoffee, Dale62 min
Mar 31, 10:32 AM CDTTornado WarningBMXPike23 min
Mar 31, 10:32 AM CDTSevere Thunderstorm WarningFFCHarris, Lamar, Meriwether, Pike, Talbot, Troup and 1 more58 min
Mar 31, 10:47 AM CDTTornado WarningBMXBarbour, Bullock43 min
Mar 31, 10:50 AM CDTSevere Thunderstorm WarningBMXBarbour40 min
Mar 31, 10:52 AM CDTSevere Thunderstorm WarningFFCButts, Henry, Jasper, Morgan, Newton, Rockdale and 1 more38 min
Mar 31, 10:54 AM CDTSevere Thunderstorm WarningMOBBaldwin51 min
Mar 31, 10:58 AM CDTSevere Thunderstorm WarningMOBConecuh, Covington, Escambia47 min
Mar 31, 11:01 AM CDTTornado WarningMOBBaldwin27 min
Mar 31, 11:08 AM CDTSevere Thunderstorm WarningTAECoffee, Dale, Geneva, Henry, Houston67 min
Mar 31, 11:15 AM CDTTornado WarningMOBEscambia, Santa Rosa45 min
Mar 31, 11:27 AM CDTSevere Thunderstorm WarningBMXBarbour33 min
Mar 31, 11:27 AM CDTSevere Thunderstorm WarningFFCClarke, Greene, Morgan, Oconee, Oglethorpe, Putnam33 min
Mar 31, 11:33 AM CDTTornado WarningBMXBarbour17 min
Mar 31, 11:34 AM CDTSevere Thunderstorm WarningMOBBaldwin41 min
Mar 31, 11:35 AM CDTTornado WarningTAEHenry40 min
Mar 31, 11:40 AM CDTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa65 min
Mar 31, 11:42 AM CDTSevere Thunderstorm WarningMOBCovington48 min
Mar 31, 11:50 AM CDTSevere Thunderstorm WarningTAEHenry, Houston25 min
Mar 31, 11:59 AM CDTTornado WarningMOBBaldwin14 min
Mar 31, 12:02 PM CDTTornado WarningMOBOkaloosa, Santa Rosa43 min
Mar 31, 12:04 PM CDTSevere Thunderstorm WarningFFCChattahoochee, Marion, Muscogee, Schley, Taylor41 min
Mar 31, 12:05 PM CDTSevere Thunderstorm WarningTAEDale, Geneva, Henry, Houston55 min
Mar 31, 12:09 PM CDTSevere Thunderstorm WarningFFCBaldwin, Bibb, Jones, Twiggs, Wilkinson25 min
Mar 31, 12:10 PM CDTTornado Warning Tornado observedTAEQuitman, Randolph, Terrell35 min
Mar 31, 12:11 PM CDTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa49 min
Mar 31, 12:14 PM CDTSevere Thunderstorm WarningTAEGeneva, Houston61 min
Mar 31, 12:14 PM CDTTornado WarningFFCChattahoochee, Marion46 min
Mar 31, 12:19 PM CDTTornado WarningMOBOkaloosa26 min
Mar 31, 12:23 PM CDTTornado WarningFFCStewart, Sumter, Webster23 min
Mar 31, 12:33 PM CDTSevere Thunderstorm WarningFFCCrisp, Dooly, Houston, Pulaski, Sumter, Wilcox42 min
Mar 31, 12:43 PM CDTSevere Thunderstorm WarningTAEBaker, Calhoun, Colquitt, Decatur, Dougherty, Grady and 6 more62 min
Mar 31, 12:53 PM CDTSevere Thunderstorm WarningFFCCrisp, Wilcox52 min
Mar 31, 1:09 PM CDTSevere Thunderstorm WarningTAEColquitt, Tift, Worth36 min
Mar 31, 1:12 PM CDTSevere Thunderstorm WarningTAEHouston63 min
Mar 31, 1:31 PM CDTSevere Thunderstorm WarningTAEBen Hill, Berrien, Colquitt, Cook, Irwin, Tift44 min
Mar 31, 1:40 PM CDTSevere Thunderstorm WarningFFCDodge, Telfair, Wheeler, Wilcox50 min
Mar 31, 2:59 PM CDTTornado WarningTAEFranklin, Gulf31 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, 1.9 hours before the alert went out and 162 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 2020-03-31Temperature 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, Birmingham, AL at 12:00Z on 2020-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 734 square meters per square second.1939587897117Sfc1 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
1788 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
734 m²/s²
0-3 km storm-relative helicity
929 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

335 
WWUS20 KWNS 311348
SEL7  
SPC WW 311348
ALZ000-FLZ000-GAZ000-MSZ000-312000-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 77
NWS Storm Prediction Center Norman OK
850 AM CDT Tue Mar 31 2020

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southern and Eastern Alabama
  Florida Panhandle
  Central and Southwest Georgia
  Southern Mississippi

* Effective this Tuesday morning and afternoon from 850 AM until
  300 PM CDT.

* Primary threats include...
  A couple tornadoes possible
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...A line of thunderstorms over Alabama will track rapidly
eastward today, posing a risk of damaging wind gusts and a few
tornadoes.

The tornado watch area is approximately along and 95 statute miles
east and west of a line from 35 miles west southwest of Crestview FL
to 60 miles northeast of La Grange GA. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU7).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 0.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 27040.

...Hart

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 31, 7:53 AM CDTMesoscale DiscussionSPCAutauga, Butler, Choctaw, Clarke, Conecuh, Crenshaw and 9 more2 hr
Mar 31, 10:42 AM CDTMesoscale DiscussionSPCBaldwin, Coffee, Covington, Dale, Geneva, Henry and 1 more93 min
Mar 31, 12:09 PM CDTMesoscale DiscussionSPCGeneva, Henry, Houston96 min
Mar 31, 1:22 PM CDTTornado WatchSPCBaker, Bradford, Clay, Columbia, Dixie, Duval and 14 more6 hr
Mar 31, 3:40 PM CDTMesoscale DiscussionSPCBaker, Columbia, Hamilton, Lafayette, Madison, Suwannee and 1 more65 min
Mar 31, 5:38 PM CDTMesoscale DiscussionSPCAlachua, Clay, Putnam, Saint Johns67 min
Mar 31, 11:20 AM CDTMesoscale DiscussionSPCBurke, Columbia, Glascock, Jefferson, Lincoln, McDuffie and 4 more85 min

Nearby

Tornado Watches in Georgia, 2020Tornado Watches in Alabama, 2020Tornado Watches in Florida, 2020Every tornado watch in 2020

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.