Alert archive / Georgia / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 549

October 14, 201412 counties in Georgia; 8 counties in South Carolina

The Storm Prediction Center issued this severe thunderstorm watch at Oct 14, 2014, 3:07 PM EDT for 12 counties in Georgia; 8 counties in South Carolina. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Oct 14, 2014, 3:07 PM EDT (19:07 UTC)
Expired
Oct 14, 2014, 9:11 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
0.5 in
Strongest gust expected
60 kt

Counties Bryan County, GA, Bulloch County, GA, Candler County, GA, Chatham County, GA, Effingham County, GA, Evans County, GA, Jenkins County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Screven County, GA, Tattnall County, GA, Allendale County, SC, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 39 km from the middle of the area, began a volume at 19:09 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
10%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
5%
Ten or more severe hail reports
5%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Oct 14, 3:15 PM EDTSevere Thunderstorm WarningCHSEvans, Liberty, Long, Tattnall60 min
Oct 14, 4:57 PM EDTSevere Thunderstorm WarningCHSBryan, Chatham, Effingham, Liberty63 min
Oct 14, 6:40 PM EDTSevere Thunderstorm WarningCHSBeaufort, Charleston, Colleton, Dorchester50 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, 7.1 hours before the alert went out and 137 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 2014-10-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 871 joules per kilogram.LCLEL10008507005003002001001 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 2014-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 square meters per square second.193958Sfc1 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
871 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
738 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 13, 9:57 PM EDTMesoscale DiscussionSPCBartow, Carroll, Catoosa, Chattahoochee, Chattooga, Cherokee and 29 more2 hr
Oct 13, 11:44 PM EDTTornado WatchSPCBartow, Calhoun, Carroll, Catoosa, Chattahoochee, Chattooga and 32 more6 hr
Oct 14, 3:07 AM EDTMesoscale DiscussionSPCBaker, Bartow, Butts, Calhoun, Carroll, Chattahoochee and 54 more83 min
Oct 14, 4:06 AM EDTTornado WatchSPCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 59 more6 hr
Oct 14, 4:27 AM EDTTornado WatchSPCBaker, Ben Hill, Berrien, Brooks, Calhoun, Clay and 19 more8 hr
Oct 14, 6:22 AM EDTMesoscale DiscussionSPCBulloch, Burke, Candler, Columbia, Elbert, Emanuel and 9 more83 min
Oct 14, 6:57 AM EDTTornado WatchSPCBulloch, Burke, Candler, Columbia, Effingham, Elbert and 27 more7 hr
Oct 14, 7:23 AM EDTMesoscale DiscussionSPCDade2 hr
Oct 14, 8:35 AM EDTMesoscale DiscussionSPCBaker, Berrien, Brooks, Calhoun, Colquitt, Cook and 12 more85 min
Oct 14, 11:21 AM EDTMesoscale DiscussionSPCBrooks, Clinch, Cook, Echols, Lanier, Lowndes and 2 more114 min
Oct 14, 11:43 AM EDTSevere Thunderstorm WatchSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 20 more7 hr
Oct 14, 1:31 PM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bibb, Butts, Clarke and 45 more2 hr
Oct 14, 1:59 PM EDTTornado WatchSPCBaldwin, Banks, Barrow, Bibb, Burke, Butts and 53 more11 hr
Oct 14, 2:58 PM EDTMesoscale DiscussionSPCBryan, Bulloch, Candler, Chatham, Effingham, Evans and 7 more32 min
Oct 14, 6:29 PM EDTMesoscale DiscussionSPCColumbia, Elbert, Franklin, Glascock, Greene, Hancock and 9 more91 min

Nearby

Severe Thunderstorm Watches in Georgia, 2014Severe Thunderstorm Watches in South Carolina, 2014Every severe thunderstorm watch in 2014

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.