Alert archive / Florida / Tornado Watches in 2006

Tornado Watch 843

October 27, 200615 counties in Florida; Clinch County, Echols County, Georgia

The Storm Prediction Center issued this tornado watch at Oct 27, 2006, 8:20 PM EDT for 15 counties in Florida; Clinch County, Echols County, Georgia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Oct 27, 2006, 8:20 PM EDT (00:20 UTC)
Expired
Oct 28, 2006, 1:00 AM EDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt

Counties Alachua County, FL, Baker County, FL, Bradford County, FL, Citrus County, FL, Columbia County, FL, Dixie County, FL, Gilchrist County, FL, Hamilton County, FL, Lafayette County, FL, Levy County, FL, Madison County, FL, Marion County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Clinch County, GA, Echols County, GA

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
10%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
50%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Oct 27, 8:24 PM EDTSevere Thunderstorm WarningTAETaylor51 min
Oct 27, 8:58 PM EDTSevere Thunderstorm WarningTAELafayette47 min
Oct 27, 9:08 PM EDTSevere Thunderstorm WarningJAXSuwannee40 min
Oct 27, 9:18 PM EDTSevere Thunderstorm WarningTAEDixie57 min
Oct 27, 9:42 PM EDTSevere Thunderstorm WarningTAELafayette33 min
Oct 27, 9:43 PM EDTSevere Thunderstorm WarningJAXGilchrist, Suwannee62 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 00:00Z, 0.3 hours before the alert went out and 113 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 00:00Z on 2006-10-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 00:00Z on 2006-10-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 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
1 J/kg
Mixed-layer CIN
-313 J/kg
Mixed-layer LCL
1120 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
122 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
Oct 27, 10:17 PM EDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 18 more118 min
Oct 28, 12:10 AM EDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 18 more65 min

Nearby

Tornado Watches in Florida, 2006Tornado Watches in Georgia, 2006Every tornado watch in 2006

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.