Alert archive / Florida / Tornado Watches in 2023
Tornado Watch 720
The Storm Prediction Center issued this tornado watch at Dec 10, 2023, 11:16 AM EST for 18 counties in Florida. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 10, 2023, 11:16 AM EST (16:16 UTC)
- Expired
- Dec 10, 2023, 5:00 PM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 55 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, Hernando County, FL, Lafayette County, FL, Levy County, FL, Madison County, FL, Marion County, FL, Pasco County, FL, Sumter County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL
The radar
The Moody AFB radar (KVAX), 106 km from the middle of the area, began a volume at 16:17 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
- 10%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- 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%
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, 4.3 hours before the alert went out and 149 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
- 485 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 635 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 202 m²/s²
- 0-3 km storm-relative helicity
- 208 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 5.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 10, 1:58 AM EST | Tornado Watch | SPC | Bay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 10 more | 9 hr |
| Dec 10, 3:02 AM EST | Mesoscale Discussion | SPC | Escambia, Holmes, Okaloosa, Santa Rosa | 88 min |
| Dec 10, 5:00 AM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Gulf, Holmes, Jackson, Okaloosa and 2 more | 90 min |
| Dec 10, 7:02 AM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Gulf, Holmes, Jackson, Walton and 1 more | 88 min |
| Dec 10, 8:28 AM EST | Mesoscale Discussion | SPC | Gadsden, Jefferson, Leon, Liberty, Wakulla | 62 min |
| Dec 10, 10:40 AM EST | Mesoscale Discussion | SPC | Dixie, Gilchrist, Hamilton, Jefferson, Lafayette, Leon and 4 more | 2 hr |
| Dec 10, 1:44 PM EST | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Citrus, Columbia, Dixie and 7 more | 91 min |
| Dec 10, 4:51 PM EST | Mesoscale Discussion | SPC | Charlotte, Citrus, DeSoto, Hardee, Hernando, Hillsborough and 6 more | 84 min |
Nearby
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.