Alert archive / Florida / Tornado Watches in 2018
Tornado Watch 50
The Storm Prediction Center issued this tornado watch at Apr 14, 2018, 10:58 PM CDT for 5 counties in Alabama; 7 counties in Florida; 6 counties in Georgia. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 14, 2018, 10:58 PM CDT (03:58 UTC)
- Expired
- Apr 15, 2018, 7:00 AM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
Counties Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Walton County, FL, Washington County, FL, Clay County, GA, Early County, GA, Miller County, GA, Quitman County, GA, Randolph County, GA, Seminole County, GA
The radar
The Ft Rucker radar (KEOX), 58 km from the middle of the area, began a volume at 04:00 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- 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
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 2:28 AM CDT | Severe Thunderstorm Warning | TAE | Bay, Holmes, Walton, Washington | 48 min |
| Apr 15, 2:34 AM CDT | Severe Thunderstorm Warning | TAE | Dale, Geneva, Henry, Houston | 41 min |
| Apr 15, 6:09 AM CDT | Tornado Warning | TAE | Bay, Calhoun, Gulf | 36 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, 4.0 hours before the alert went out and 121 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
- 1537 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
133 WWUS20 KWNS 150355 SEL0 SPC WW 150355 ALZ000-FLZ000-GAZ000-CWZ000-151200- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 50 NWS Storm Prediction Center Norman OK 1055 PM CDT Sat Apr 14 2018 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Southeast Alabama Florida Panhandle Southwest Georgia Coastal Waters * Effective this Saturday night and Sunday morning from 1055 PM until 700 AM CDT. * Primary threats include... A couple tornadoes possible Scattered damaging wind gusts to 70 mph possible SUMMARY...A squall line across the western Florida Panhandle and south-central Alabama at late evening will continue east-northeastward with some additional forward acceleration likely overnight. A relatively moist environment and strong low-level shear will support the possibility of a couple of tornadoes and localized pockets of wind damage. The tornado watch area is approximately along and 40 statute miles east and west of a line from 30 miles north of Dothan AL to 40 miles west of Apalachicola FL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). 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...CONTINUE...WW 49... 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 500. Mean storm motion vector 24035. ...Guyer
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 9:27 PM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 10 more | 93 min |
| Apr 15, 1:45 AM CDT | Mesoscale Discussion | SPC | Coffee, Dale, Geneva, Henry, Houston | 2 hr |
| Apr 15, 5:42 AM CDT | Mesoscale Discussion | SPC | Bay, Calhoun, Gulf, Jackson | 93 min |
| Apr 15, 8:34 AM CDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Columbia, Gilchrist, Hamilton and 4 more | 86 min |
| Apr 15, 9:12 AM CDT | Tornado Watch | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 22 more | 8 hr |
| Apr 15, 11:18 AM CDT | Mesoscale Discussion | SPC | Hardee, Hillsborough, Manatee, Polk | 57 min |
| Apr 15, 1:30 PM CDT | Mesoscale Discussion | SPC | Clay, Duval, Lake, Manatee, Polk, Putnam and 1 more | 90 min |
| Apr 15, 3:42 PM CDT | Mesoscale Discussion | SPC | Broward, Collier, DeSoto, Glades, Hardee, Hendry and 4 more | 63 min |
| Apr 15, 11:13 AM CDT | Tornado Watch | SPC | Burke, Columbia, Lincoln, McDuffie, Richmond | 9 hr |
Nearby
Tornado Watches in Florida, 2018Tornado Watches in Georgia, 2018Tornado Watches in Alabama, 2018Every tornado watch in 2018
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.