Alert archive / Florida / Tornado Watches in 2007
Tornado Watch 14
The Storm Prediction Center issued this tornado watch at Feb 1, 2007, 4:17 PM EST for 16 counties in Florida; 10 counties in Georgia. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 1, 2007, 4:17 PM EST (21:17 UTC)
- Expired
- Feb 2, 2007, 1:00 AM EST
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 26 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hamilton County, FL, Levy County, FL, Marion County, FL, Nassau County, FL, Putnam County, FL, Saint Johns County, FL, Suwannee County, FL, Union County, FL, Atkinson County, GA, Brantley County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Echols County, GA, Glynn County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- 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
- 50%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 1, 6:34 PM EST | Severe Thunderstorm Warning | JAX | Marion | 26 min |
| Feb 1, 6:48 PM EST | Severe Thunderstorm Warning | TBW | Levy | 27 min |
| Feb 1, 11:26 PM EST | Tornado Warning | JAX | Marion | 49 min |
| Feb 1, 11:45 PM EST | Tornado Warning | JAX | Flagler, Putnam | 45 min |
| Feb 2, 12:15 AM EST | Tornado Warning | JAX | Marion, Putnam | 30 min |
| Feb 2, 12:27 AM EST | Tornado Warning | JAX | Marion | 48 min |
| Feb 2, 12:54 AM EST | Tornado Warning | JAX | Flagler | 21 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, 9.3 hours before the alert went out and 73 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 770 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 313 m²/s²
- 0-3 km storm-relative helicity
- 428 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 012120
SEL4
SPC WW 012120
FLZ000-GAZ000-CWZ000-020600-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 14
NWS STORM PREDICTION CENTER NORMAN OK
420 PM EST THU FEB 1 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN FLORIDA
SOUTHEASTERN GEORGIA
COASTAL WATERS
EFFECTIVE THIS THURSDAY AFTERNOON AND FRIDAY MORNING FROM 420 PM
UNTIL 100 AM EST.
TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 10 MILES NORTH OF WAYCROSS
GEORGIA TO 35 MILES SOUTH SOUTHEAST OF GAINESVILLE FLORIDA. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU4).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 13...
DISCUSSION...THUNDERSTORMS WILL INTENSIFY AND SPREAD ENEWD ACROSS
THE REGION THIS EVENING AHEAD OF POTENT MID LEVEL JET. SHEAR WILL
BECOME VERY STRONG THROUGH THE EVENING...ESPECIALLY INVOF SURFACE
LOW FORECAST TO TRACK ACROSS NRN FL AND INTO FAR SERN GA. THREATS
OF DAMAGING WINDS AND ISOLATED TORNADOES ARE EXPECTED TO INCREASE
THIS EVENING AS POSSIBLE MCS TRACKS ENEWD ACROSS WW.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 350.
MEAN STORM MOTION VECTOR 25035.
...EVANSSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 1, 8:56 AM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Escambia, Gulf, Holmes, Jackson and 4 more | 2 hr |
| Feb 1, 1:18 PM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Holmes and 8 more | 57 min |
| Feb 1, 1:52 PM EST | Tornado Watch | SPC | Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 11 more | 8 hr |
| Feb 1, 3:44 PM EST | Mesoscale Discussion | SPC | Alachua, Baker, Bay, Bradford, Calhoun, Columbia and 19 more | 91 min |
| Feb 1, 6:52 PM EST | Mesoscale Discussion | SPC | Alachua, Baker, Bay, Bradford, Calhoun, Citrus and 27 more | 83 min |
| Feb 1, 12:43 AM EST | Mesoscale Discussion | SPC | Banks, Barrow, Bartow, Catoosa, Chattooga, Cherokee and 33 more | 6 hr |
| Feb 1, 7:02 AM EST | Mesoscale Discussion | SPC | Banks, Dawson, Elbert, Fannin, Franklin, Gilmer and 11 more | 6 hr |
Nearby
Tornado Watches in Florida, 2007Tornado Watches in Georgia, 2007Every tornado watch in 2007
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.