Alert archive / Georgia / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 413

May 18, 200323 counties in Florida; 28 counties in Georgia

The Storm Prediction Center issued this severe thunderstorm watch at May 18, 2003, 1:40 PM EDT for 23 counties in Florida; 28 counties in Georgia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 18, 2003, 1:40 PM EDT (17:40 UTC)
Expired
May 18, 2003, 8:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 51 counties

Alachua County, FL, Baker County, FL, Bradford 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, Lake 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, Wakulla 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, Dodge County, GA, Echols County, GA, Glynn County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Lowndes County, GA, McIntosh County, GA, Pierce County, GA, Telfair County, GA, Thomas County, GA, Tift County, GA, Ware County, GA, Wayne County, GA, Wheeler County, GA

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 18, 2:44 PM EDTSevere Thunderstorm WarningJAXMarion31 min
May 18, 2:56 PM EDTSevere Thunderstorm WarningJAXWare34 min
May 18, 3:20 PM EDTSevere Thunderstorm WarningJAXAppling, Bacon, Pierce40 min
May 18, 3:30 PM EDTSevere Thunderstorm WarningJAXWayne30 min
May 18, 3:34 PM EDTSevere Thunderstorm WarningJAXMarion, Putnam41 min
May 18, 3:42 PM EDTSevere Thunderstorm WarningTAECook33 min
May 18, 3:43 PM EDTSevere Thunderstorm WarningJAXAlachua47 min
May 18, 3:53 PM EDTSevere Thunderstorm WarningJAXHamilton37 min
May 18, 3:58 PM EDTSevere Thunderstorm WarningFFCDodge32 min
May 18, 3:59 PM EDTSevere Thunderstorm WarningTAEMadison31 min
May 18, 4:18 PM EDTSevere Thunderstorm WarningFFCTelfair27 min
May 18, 4:20 PM EDTSevere Thunderstorm WarningJAXMarion, Putnam40 min
May 18, 4:26 PM EDTSevere Thunderstorm WarningJAXPierce, Wayne34 min
May 18, 4:31 PM EDTSevere Thunderstorm WarningJAXHamilton59 min
May 18, 4:34 PM EDTSevere Thunderstorm WarningJAXColumbia56 min
May 18, 4:50 PM EDTSevere Thunderstorm WarningJAXCharlton, Ware40 min
May 18, 4:55 PM EDTSevere Thunderstorm WarningJAXBaker, Union50 min
May 18, 4:55 PM EDTSevere Thunderstorm WarningJAXJeff Davis35 min
May 18, 4:58 PM EDTSevere Thunderstorm WarningJAXSuwannee62 min
May 18, 5:27 PM EDTSevere Thunderstorm WarningFFCTelfair33 min
May 18, 5:35 PM EDTSevere Thunderstorm WarningJAXCharlton, Ware55 min
May 18, 6:45 PM EDTSevere Thunderstorm WarningJAXBrantley60 min
May 18, 7:15 PM EDTSevere Thunderstorm WarningJAXGilchrist45 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

Jacksonville, FL (KJAX), launched 12:00Z, 5.7 hours before the alert went out and 108 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, Jacksonville, FL at 12:00Z on 2003-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2020 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, Jacksonville, FL at 12:00Z on 2003-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939Sfc1 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
2020 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
763 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 6:52 AM EDTMesoscale DiscussionSPCBay, Escambia, Holmes, Okaloosa, Santa Rosa, Walton and 1 more53 min
May 18, 11:18 AM EDTMesoscale DiscussionSPCCalhoun, Escambia, Gadsden, Holmes, Jackson, Leon and 5 more87 min
May 18, 12:00 PM EDTTornado WatchSPCBay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 8 more5 hr
May 18, 1:16 PM EDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Clay, Columbia, Gilchrist and 8 more119 min
May 18, 2:10 PM EDTMesoscale DiscussionSPCBay, Calhoun, Gadsden, Gulf, Holmes, Jackson and 3 more95 min
May 18, 6:22 PM EDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Clay, Columbia, Dixie and 15 more83 min
May 18, 1:10 PM EDTTornado WatchSPCBryan, Bulloch, Burke, Candler, Chatham, Effingham and 17 more6 hr
May 18, 5:57 PM EDTMesoscale DiscussionSPCBurke, Candler, Columbia, Emanuel, Jefferson, Jenkins and 6 more63 min

Nearby

Severe Thunderstorm Watches in Georgia, 2003Severe Thunderstorm Watches in Florida, 2003Every severe thunderstorm watch in 2003

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.