Alert archive / Florida / Tornado Watches in 2024
Tornado Watch 596
The Storm Prediction Center issued this tornado watch at Aug 5, 2024, 5:57 AM EDT for 29 counties in Florida; 14 counties in Georgia. It was in force for 12 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 5, 2024, 5:57 AM EDT (09:57 UTC)
- Expired
- Aug 5, 2024, 6:00 PM EDT
- In force
- 12 hr
- Issued by
- the Storm Prediction Center
- Strongest gust expected
- 60 kt
All 43 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hardee County, FL, Hernando County, FL, Hillsborough County, FL, Lake County, FL, Levy County, FL, Manatee County, FL, Marion County, FL, Nassau County, FL, Orange County, FL, Osceola County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Putnam County, FL, Saint Johns County, FL, Sarasota County, FL, Seminole County, FL, Sumter County, FL, Union County, FL, Volusia County, FL, Brantley County, GA, Bryan County, GA, Camden County, GA, Charlton County, GA, Chatham County, GA, Evans County, GA, Glynn County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Pierce County, GA, Tattnall County, GA, Ware County, GA, Wayne County, GA
The radar
The Jacksonville radar (KJAX), 130 km from the middle of the area, began a volume at 10:00 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
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 5%
- 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%
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 6:01 AM EDT | Tornado Warning | TBW | Polk | 14 min |
| Aug 5, 7:08 AM EDT | Flash Flood Warning | JAX | Columbia, Gilchrist, Suwannee | 5 hr |
| Aug 5, 7:43 AM EDT | Flash Flood Warning | JAX | Alachua, Bradford, Columbia, Gilchrist, Hamilton, Union | 5 hr |
| Aug 5, 8:03 AM EDT | Tornado Warning | TBW | Polk | 27 min |
| Aug 5, 8:55 AM EDT | Tornado Warning | MLB | Orange | 20 min |
| Aug 5, 9:51 AM EDT | Flash Flood Warning | JAX | Baker, Columbia, Hamilton, Suwannee | 6 hr |
| Aug 5, 12:21 PM EDT | Flash Flood Warning | JAX | Columbia, Gilchrist, Hamilton, Suwannee | 6 hr |
| Aug 5, 3:42 PM EDT | Flash Flood Warning | JAX | Baker, Columbia, Hamilton, Union | 6 hr |
| Aug 5, 3:55 PM EDT | Tornado Warning | JAX | Duval, Saint Johns | 20 min |
| Aug 5, 4:11 PM EDT | Tornado Warning | CHS | Bryan, Chatham | 34 min |
| Aug 5, 4:34 PM EDT | Flash Flood Warning | JAX | Baker, Columbia, Hamilton, Suwannee | 3 hr |
| Aug 5, 5:28 PM EDT | Tornado Warning | JAX | Duval, Saint Johns | 32 min |
| Aug 5, 5:32 PM EDT | Flash Flood Warning | CHS | Bryan, Bulloch, Chatham, Effingham, Evans, Liberty and 3 more | 8 hr |
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 00:00Z, 10.0 hours before the alert went out and 131 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
- 590 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 733 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 162 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.1
The text
As transmitted.
391 WWUS20 KWNS 050955 SEL6 SPC WW 050955 FLZ000-GAZ000-CWZ000-052000- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 596 NWS Storm Prediction Center Norman OK 555 AM EDT Mon Aug 5 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Central and northern Florida Southeastern Georgia Coastal Waters * Effective this Monday morning and afternoon from 555 AM until 400 PM EDT. * Primary threats include... A few tornadoes possible SUMMARY...Per NHC forecasts, Hurricane Debby should move slowly northeastward/inland after landfall, to near the FL/GA line during the duration of this watch. Associated tornado potential -- mainly northeast through southeast of center -- should spread over the watch area and across more of northern FL and southeastern GA through early/mid afternoon. The tornado watch area is approximately along and 50 statute miles east and west of a line from 50 miles east southeast of Saint Petersburg FL to 50 miles north of Brunswick GA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU6). PRECAUTIONARY/PREPAREDNESS ACTIONS... 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...This tornado watch replaces tornado watch number 595. Watch number 595 will not be in effect after 555 AM EDT. AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 18035. ...Edwards
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 10:11 PM EDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 22 more | 2 hr |
| Aug 5, 12:31 AM EDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 17 more | 119 min |
| Aug 5, 5:09 AM EDT | Mesoscale Discussion | SPC | Alachua, Citrus, Gilchrist, Hardee, Hernando, Hillsborough and 8 more | 96 min |
| Aug 5, 12:08 PM EDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Charlotte, Citrus, Clay and 23 more | 52 min |
| Aug 5, 7:13 AM EDT | Mesoscale Discussion | SPC | Bryan, Camden, Chatham, Glynn, Liberty, McIntosh | 2 hr |
| Aug 5, 2:49 PM EDT | Mesoscale Discussion | SPC | Bryan, Camden, Chatham, Effingham, Glynn, Liberty and 1 more | 86 min |
| Aug 5, 3:40 PM EDT | Tornado Watch | SPC | Bryan, Chatham, Effingham, Liberty, Long, McIntosh | 9 hr |
Nearby
Tornado Watches in Florida, 2024Tornado Watches in Georgia, 2024Every tornado watch in 2024
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.