Alert archive / Florida / Tornado Watches in 2013

Tornado Watch 106

April 14, 201329 counties in Florida; 5 counties in Georgia

The Storm Prediction Center issued this tornado watch at Apr 14, 2013, 1:52 PM EDT for 29 counties in Florida; 5 counties in Georgia. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Apr 14, 2013, 1:52 PM EDT (17:52 UTC)
Expired
Apr 14, 2013, 11:00 PM EDT
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 34 counties

Alachua County, FL, Baker County, FL, Bradford County, FL, Brevard County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hamilton County, FL, Hernando County, FL, Hillsborough County, FL, Indian River County, FL, Lake County, FL, Levy County, FL, Marion County, FL, Nassau County, FL, Orange County, FL, Osceola County, FL, Pasco County, FL, Polk County, FL, Putnam County, FL, Saint Johns County, FL, Seminole County, FL, Sumter County, FL, Suwannee County, FL, Union County, FL, Volusia County, FL, Camden County, GA, Charlton County, GA, Clinch County, GA, Echols County, GA, Ware County, GA

The radar

The Jacksonville radar (KJAX), 113 km from the middle of the area, began a volume at 17:52 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
30%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 14, 5:30 PM EDTTornado WarningMLBLake45 min
Apr 14, 5:41 PM EDTSevere Thunderstorm WarningJAXClay, Marion, Putnam49 min
Apr 14, 5:53 PM EDTSevere Thunderstorm WarningMLBLake, Orange, Seminole, Volusia52 min
Apr 14, 6:01 PM EDTSevere Thunderstorm WarningJAXMarion44 min
Apr 14, 6:38 PM EDTSevere Thunderstorm WarningMLBOrange, Seminole, Volusia67 min
Apr 14, 6:43 PM EDTTornado WarningMLBBrevard, Orange, Seminole, Volusia62 min
Apr 14, 7:20 PM EDTSevere Thunderstorm WarningJAXColumbia, Hamilton, Suwannee40 min
Apr 14, 7:25 PM EDTSevere Thunderstorm WarningJAXFlagler, Saint Johns50 min
Apr 14, 8:05 PM EDTTornado WarningMLBBrevard, Orange, Osceola40 min
Apr 14, 8:31 PM EDTTornado WarningMLBBrevard59 min
Apr 14, 8:36 PM EDTSevere Thunderstorm WarningJAXBrantley, Charlton, Pierce, Ware39 min
Apr 14, 8:53 PM EDTSevere Thunderstorm WarningMLBBrevard, Orange, Osceola82 min
Apr 14, 9:02 PM EDTTornado WarningMLBBrevard58 min
Apr 14, 9:16 PM EDTSevere Thunderstorm WarningJAXBrantley, Camden, Glynn, Wayne59 min
Apr 14, 9:21 PM EDTSevere Thunderstorm WarningMLBBrevard, Osceola54 min
Apr 14, 9:45 PM EDTSevere Thunderstorm WarningMLBIndian River, Osceola60 min
Apr 14, 10:33 PM EDTSevere Thunderstorm WarningMLBBrevard42 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, 5.9 hours before the alert went out and 209 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 2013-04-14Temperature 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, Tallahassee Rgnl, FL at 12:00Z on 2013-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.19395878Sfc1 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
1960 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
196 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
Apr 14, 10:24 AM EDTMesoscale DiscussionSPCBay, Calhoun, Escambia, Gulf, Liberty, Okaloosa and 3 more96 min
Apr 14, 10:57 AM EDTTornado WatchSPCBay, Calhoun, Dixie, Escambia, Franklin, Gadsden and 14 more8 hr
Apr 14, 1:03 PM EDTMesoscale DiscussionSPCGlades, Hardee, Highlands, Lake, Marion, Okeechobee and 5 more87 min
Apr 14, 2:05 PM EDTMesoscale DiscussionSPCBay, Calhoun, Gadsden, Gulf, Jefferson, Leon and 3 more85 min
Apr 14, 4:17 PM EDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 17 more88 min
Apr 14, 6:44 PM EDTMesoscale DiscussionSPCAlachua, Dixie, Gilchrist, Lafayette, Lake, Marion and 4 more91 min

Nearby

Tornado Watches in Florida, 2013Tornado Watches in Georgia, 2013Every tornado watch in 2013

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.