Alert archive / Georgia / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 547

October 14, 201422 counties in Florida; 26 counties in Georgia

The Storm Prediction Center issued this severe thunderstorm watch at Oct 14, 2014, 11:43 AM EDT for 22 counties in Florida; 26 counties in Georgia. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Oct 14, 2014, 11:43 AM EDT (15:43 UTC)
Expired
Oct 14, 2014, 7:00 PM EDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
0.5 in
Strongest gust expected
60 kt
All 48 counties

Alachua County, FL, Baker County, FL, Bradford County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, Dixie County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Levy County, FL, Madison County, FL, Marion County, FL, Nassau County, FL, Putnam County, FL, Saint Johns County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Echols County, GA, Glynn County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Lowndes County, GA, Pierce County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Worth County, GA

The radar

The Moody AFB radar (KVAX), 37 km from the middle of the area, began a volume at 15:43 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
20%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
40%
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

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

IssuedProductOfficeCountiesLasted
Oct 14, 11:44 AM EDTSevere Thunderstorm WarningTAEJefferson, Leon, Madison, Taylor, Wakulla61 min
Oct 14, 12:19 PM EDTSevere Thunderstorm WarningTAEJefferson, Lafayette, Madison, Taylor56 min
Oct 14, 1:31 PM EDTSevere Thunderstorm WarningJAXHamilton, Suwannee29 min
Oct 14, 1:52 PM EDTSevere Thunderstorm WarningJAXClinch, Echols, Ware38 min
Oct 14, 2:11 PM EDTSevere Thunderstorm WarningJAXBrantley, Pierce, Ware49 min
Oct 14, 2:42 PM EDTSevere Thunderstorm WarningJAXAppling, Bacon, Ware48 min
Oct 14, 2:50 PM EDTSevere Thunderstorm WarningJAXBaker28 min
Oct 14, 3:05 PM EDTSevere Thunderstorm WarningJAXNassau25 min
Oct 14, 3:09 PM EDTSevere Thunderstorm WarningJAXWayne21 min
Oct 14, 3:19 PM EDTSevere Thunderstorm WarningJAXClay, Duval, Nassau41 min
Oct 14, 3:26 PM EDTSevere Thunderstorm WarningJAXAppling, Brantley, Camden, Charlton, Glynn, Pierce and 1 more64 min
Oct 14, 3:28 PM EDTSevere Thunderstorm WarningJAXDuval, Nassau47 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, 3.7 hours before the alert went out and 106 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, Tallahassee Rgnl, FL at 12:00Z on 2014-10-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 502 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, Tallahassee Rgnl, FL at 12:00Z on 2014-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 217 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
502 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
601 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
217 m²/s²
0-3 km storm-relative helicity
276 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 13, 8:23 PM EDTTornado WatchSPCEscambia, Okaloosa, Santa Rosa7 hr
Oct 13, 11:44 PM EDTTornado WatchSPCBay, Calhoun, Franklin, Gulf, Holmes, Jackson and 3 more6 hr
Oct 14, 12:52 AM EDTMesoscale DiscussionSPCEscambia, Okaloosa, Santa Rosa53 min
Oct 14, 3:07 AM EDTMesoscale DiscussionSPCCalhoun, Holmes, Jackson, Liberty, Washington83 min
Oct 14, 4:27 AM EDTTornado WatchSPCBay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more8 hr
Oct 14, 8:35 AM EDTMesoscale DiscussionSPCCalhoun, Franklin, Gadsden, Gulf, Jackson, Jefferson and 5 more85 min
Oct 14, 11:21 AM EDTMesoscale DiscussionSPCBaker, Columbia, Dixie, Gilchrist, Hamilton, Jefferson and 8 more114 min
Oct 13, 9:57 PM EDTMesoscale DiscussionSPCBartow, Carroll, Catoosa, Chattahoochee, Chattooga, Cherokee and 29 more2 hr
Oct 14, 4:06 AM EDTTornado WatchSPCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 59 more6 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, 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, 3:07 PM EDTSevere Thunderstorm WatchSPCBryan, Bulloch, Candler, Chatham, Effingham, Evans and 6 more6 hr
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 Florida, 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.