Alert archive / Georgia / Tornado Watches in 2019

Tornado Watch 9

March 3, 201924 counties in Georgia; 18 counties in South Carolina

The Storm Prediction Center issued this tornado watch at Mar 3, 2019, 3:35 PM EST for 24 counties in Georgia; 18 counties in South Carolina. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Mar 3, 2019, 3:35 PM EST (20:35 UTC)
Expired
Mar 3, 2019, 11:00 PM EST
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 42 counties

Appling County, GA, Atkinson County, GA, Bacon County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Chatham County, GA, Clinch County, GA, Coffee County, GA, Columbia County, GA, Echols County, GA, Effingham County, GA, Evans County, GA, Jeff Davis County, GA, Jenkins County, GA, Liberty County, GA, Long County, GA, McDuffie County, GA, McIntosh County, GA, Richmond County, GA, Screven County, GA, Tattnall County, GA, Wayne County, GA, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Clarendon County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC, Lee County, SC, Lexington County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC

The radar

The Charleston,SC radar (KCLX), 46 km from the middle of the area, began a volume at 20:39 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
60%
One or more EF2 to EF5 tornadoes
30%
Ten or more severe wind reports
80%
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
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 3, 4:11 PM ESTTornado WarningJAXAppling, Jeff Davis49 min
Mar 3, 4:16 PM ESTSevere Thunderstorm WarningCAEBurke44 min
Mar 3, 4:25 PM ESTSevere Thunderstorm WarningCHSScreven50 min
Mar 3, 4:29 PM ESTTornado WarningCAEBurke19 min
Mar 3, 4:32 PM ESTSevere Thunderstorm WarningJAXCoffee28 min
Mar 3, 4:41 PM ESTTornado WarningJAXAppling, Bacon, Coffee, Jeff Davis49 min
Mar 3, 4:47 PM ESTSevere Thunderstorm WarningCHSScreven41 min
Mar 3, 4:49 PM ESTSevere Thunderstorm WarningJAXAtkinson, Bacon, Coffee26 min
Mar 3, 4:57 PM ESTSevere Thunderstorm WarningCHSEvans, Tattnall48 min
Mar 3, 5:01 PM ESTTornado WarningJAXAtkinson, Bacon, Coffee, Jeff Davis44 min
Mar 3, 5:05 PM ESTSevere Thunderstorm WarningCAEBamberg, Barnwell55 min
Mar 3, 5:17 PM ESTTornado WarningCAEBurke43 min
Mar 3, 5:30 PM ESTTornado WarningJAXAppling, Bacon, Coffee, Pierce, Wayne45 min
Mar 3, 5:34 PM ESTTornado WarningCAEBamberg, Orangeburg41 min
Mar 3, 5:36 PM ESTTornado WarningJAXAppling, Coffee, Jeff Davis39 min
Mar 3, 5:39 PM ESTSevere Thunderstorm WarningCHSBryan, Bulloch, Evans, Liberty51 min
Mar 3, 5:56 PM ESTTornado WarningCAEAiken, Edgefield16 min
Mar 3, 6:00 PM ESTTornado WarningCAEBurke26 min
Mar 3, 6:10 PM ESTTornado WarningCAECalhoun, Orangeburg35 min
Mar 3, 6:11 PM ESTSevere Thunderstorm WarningJAXAppling, Bacon, Jeff Davis34 min
Mar 3, 6:14 PM ESTTornado WarningJAXWayne16 min
Mar 3, 6:21 PM ESTSevere Thunderstorm WarningCHSLiberty, Long, McIntosh54 min
Mar 3, 6:33 PM ESTTornado WarningCHSBerkeley, Colleton, Dorchester27 min
Mar 3, 6:40 PM ESTTornado WarningCAELexington35 min
Mar 3, 6:45 PM ESTSevere Thunderstorm WarningCAEChesterfield, Kershaw, Lee45 min
Mar 3, 6:48 PM ESTSevere Thunderstorm WarningJAXAppling, Wayne27 min
Mar 3, 6:53 PM ESTTornado WarningCAELee9 min
Mar 3, 7:04 PM ESTSevere Thunderstorm WarningCHSBryan, Chatham, Liberty41 min
Mar 3, 7:07 PM ESTTornado WarningCAELexington, Richland22 min
Mar 3, 7:33 PM ESTSevere Thunderstorm WarningCAEKershaw, Richland, Sumter15 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

Charleston AFB, SC (KCHS), launched 12:00Z, 8.6 hours before the alert went out and 67 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, Charleston AFB, SC at 12:00Z on 2019-03-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 86 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, Charleston AFB, SC at 12:00Z on 2019-03-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
86 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
719 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

351 
WWUS20 KWNS 032031
SEL9  
SPC WW 032031
GAZ000-SCZ000-CWZ000-040400-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 9
NWS Storm Prediction Center Norman OK
335 PM EST Sun Mar 3 2019

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Eastern Georgia
  Central and Southern South Carolina
  Coastal Waters

* Effective this Sunday afternoon and evening from 335 PM until
  1100 PM EST.

* Primary threats include...
  A few tornadoes likely with a couple intense tornadoes possible
  Widespread damaging wind gusts to 70 mph likely

SUMMARY...Numerous strong to severe thunderstorms over Georgia will
spread eastward this afternoon and evening, posing a risk of
damaging winds and a few tornadoes.

The tornado watch area is approximately along and 85 statute miles
east and west of a line from 50 miles east northeast of Columbia SC
to 20 miles east southeast of Waycross GA. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU9).

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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 7...WW 8...

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 450. Mean
storm motion vector 26035.

...Hart

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 3, 10:59 AM ESTMesoscale DiscussionSPCBaker, Calhoun, Chattahoochee, Clay, Early, Harris and 19 more2 hr
Mar 3, 12:24 PM ESTTornado WatchSPCBaker, Baldwin, Ben Hill, Berrien, Bibb, Bleckley and 83 more10 hr
Mar 3, 1:02 PM ESTMesoscale DiscussionSPCClay58 min
Mar 3, 1:28 PM ESTMesoscale DiscussionSPCHarris, Muscogee32 min
Mar 3, 3:06 PM ESTMesoscale DiscussionSPCChattahoochee, Houston, Macon, Marion, Muscogee, Peach and 1 more54 min
Mar 3, 3:19 PM ESTMesoscale DiscussionSPCMuscogee26 min
Mar 3, 3:19 PM ESTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Baldwin, Ben Hill, Berrien and 41 more116 min
Mar 3, 3:51 PM ESTMesoscale DiscussionSPCTwiggs, Wilkinson24 min
Mar 3, 4:22 PM ESTMesoscale DiscussionSPCDecatur, Early, Miller, Seminole113 min
Mar 3, 4:28 PM ESTMesoscale DiscussionSPCBaldwin, Bibb, Bleckley, Burke, Crawford, Emanuel and 15 more62 min
Mar 3, 6:15 PM ESTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 56 more2 hr

Nearby

Tornado Watches in Georgia, 2019Tornado Watches in South Carolina, 2019Every tornado watch in 2019

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.