Alert archive / Florida / Tornado Watches in 2006

Tornado Watch 469

June 12, 20069 counties in Florida

The Storm Prediction Center issued this tornado watch at Jun 12, 2006, 4:35 PM EDT for 9 counties in Florida. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 12, 2006, 4:35 PM EDT (20:35 UTC)
Expired
Jun 12, 2006, 9:35 PM EDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
0.5 in
Strongest gust expected
50 kt

Counties Charlotte County, FL, DeSoto County, FL, Hardee County, FL, Highlands County, FL, Hillsborough County, FL, Manatee County, FL, Pasco County, FL, Polk County, FL, Sarasota County, FL

The radar

The Tampa radar (KTBW), 24 km from the middle of the area, began a volume at 20:35 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
30%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
10%
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
20%

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 8.6 hours before the alert went out and 24 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, Tampa Bay, FL at 12:00Z on 2006-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 455 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, Tampa Bay, FL at 12:00Z on 2006-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 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
455 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
677 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
302 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 12, 5:38 AM EDTMesoscale DiscussionSPCCharlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota97 min
Jun 12, 8:45 AM EDTMesoscale DiscussionSPCBrevard, Broward, Charlotte, Collier, DeSoto, Glades and 16 more90 min
Jun 12, 9:07 AM EDTTornado WatchSPCBrevard, Charlotte, Citrus, Collier, DeSoto, Glades and 18 more8 hr
Jun 12, 12:36 PM EDTMesoscale DiscussionSPCBrevard, Charlotte, Citrus, Collier, DeSoto, Glades and 20 more114 min
Jun 12, 7:46 PM EDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 10 more119 min

Nearby

Tornado Watches in Florida, 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; radar from the NEXRAD Level II archive.