Alert archive / Florida / Tornado Watches in 2019
Tornado Watch 87
The Storm Prediction Center issued this tornado watch at Apr 19, 2019, 10:13 AM EDT for 27 counties in Florida; 14 counties in Georgia. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2019, 10:13 AM EDT (14:13 UTC)
- Expired
- Apr 19, 2019, 4:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 41 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, DeSoto County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hamilton County, FL, Hardee County, FL, Hernando County, FL, Hillsborough County, FL, Levy County, FL, Manatee County, FL, Marion County, FL, Nassau County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Putnam County, FL, Saint Johns County, FL, Sarasota County, FL, Sumter County, FL, Suwannee County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Glynn County, GA, Jeff Davis County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA
The radar
The Jacksonville radar (KJAX), 84 km from the middle of the area, began a volume at 14:15 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
- 60%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 10:15 AM EDT | Severe Thunderstorm Warning | JAX | Columbia, Hamilton | 45 min |
| Apr 19, 10:19 AM EDT | Severe Thunderstorm Warning | JAX | Columbia, Gilchrist, Hamilton, Suwannee | 41 min |
| Apr 19, 10:35 AM EDT | Severe Thunderstorm Warning | JAX | Appling, Bacon, Charlton, Clinch, Jeff Davis, Pierce and 1 more | 55 min |
| Apr 19, 10:36 AM EDT | Severe Thunderstorm Warning | TBW | Levy | 39 min |
| Apr 19, 10:45 AM EDT | Severe Thunderstorm Warning | JAX | Atkinson, Coffee | 16 min |
| Apr 19, 10:51 AM EDT | Tornado Warning | JAX | Appling, Jeff Davis | 24 min |
| Apr 19, 10:56 AM EDT | Tornado Warning | JAX | Baker, Columbia | 19 min |
| Apr 19, 11:00 AM EDT | Severe Thunderstorm Warning | JAX | Alachua, Baker, Bradford, Columbia, Gilchrist, Union | 60 min |
| Apr 19, 11:12 AM EDT | Severe Thunderstorm Warning | JAX | Appling, Brantley, Charlton, Pierce, Ware, Wayne | 48 min |
| Apr 19, 11:22 AM EDT | Severe Thunderstorm Warning | TBW | Levy | 38 min |
| Apr 19, 11:33 AM EDT | Severe Thunderstorm Warning | JAX | Clay, Duval, Nassau, Saint Johns | 57 min |
| Apr 19, 11:42 AM EDT | Severe Thunderstorm Warning | TBW | Citrus, Levy | 33 min |
| Apr 19, 11:49 AM EDT | Tornado Warning | JAX | Nassau | 26 min |
| Apr 19, 11:54 AM EDT | Severe Thunderstorm Warning | JAX | Alachua, Clay, Marion, Putnam | 66 min |
| Apr 19, 12:01 PM EDT | Severe Thunderstorm Warning | JAX | Brantley, Charlton, Wayne | 29 min |
| Apr 19, 12:10 PM EDT | Tornado Warning | JAX | Camden, Glynn | 29 min |
| Apr 19, 12:12 PM EDT | Severe Thunderstorm Warning | TBW | Citrus, Hernando, Pasco, Sumter | 33 min |
| Apr 19, 12:26 PM EDT | Severe Thunderstorm Warning | JAX | Clay, Duval, Nassau, Saint Johns | 49 min |
| Apr 19, 12:31 PM EDT | Severe Thunderstorm Warning | TBW | Hernando, Hillsborough, Pasco, Pinellas | 44 min |
| Apr 19, 12:45 PM EDT | Severe Thunderstorm Warning | JAX | Clay, Marion, Putnam, Saint Johns | 45 min |
| Apr 19, 12:50 PM EDT | Severe Thunderstorm Warning | TBW | Citrus, Hernando, Sumter | 40 min |
| Apr 19, 1:18 PM EDT | Severe Thunderstorm Warning | TBW | Citrus, Hernando, Hillsborough, Manatee, Pasco, Pinellas and 1 more | 72 min |
| Apr 19, 1:25 PM EDT | Severe Thunderstorm Warning | JAX | Flagler, Marion, Putnam, Saint Johns | 65 min |
| Apr 19, 2:13 PM EDT | Severe Thunderstorm Warning | TBW | Hardee, Hillsborough, Manatee, Polk, Sarasota | 77 min |
| Apr 19, 2:27 PM EDT | Severe Thunderstorm Warning | JAX | Flagler | 33 min |
| Apr 19, 3:29 PM EDT | Severe Thunderstorm Warning | TBW | Charlotte, DeSoto, Hardee, Highlands, Manatee, Polk and 1 more | 61 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, 2.2 hours before the alert went out and 86 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
- 822 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 632 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 303 m²/s²
- 0-3 km storm-relative helicity
- 279 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 7.3
The text
As transmitted.
395 WWUS20 KWNS 191411 SEL7 SPC WW 191411 FLZ000-GAZ000-CWZ000-192000- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 87 NWS Storm Prediction Center Norman OK 1015 AM EDT Fri Apr 19 2019 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Parts of northern and west central Florida Peninsula Southeastern Georgia Coastal Waters * Effective this Friday morning and afternoon from 1015 AM until 400 PM EDT. * Primary threats include... A couple tornadoes possible Scattered damaging wind gusts to 70 mph likely Isolated large hail events to 1 inch in diameter possible SUMMARY...A broken squall line will likely persist into the afternoon while moving eastward. Bowing segments and embedded supercells will pose a threat for a couple of tornadoes and damaging gusts, along with isolated large hail. The tornado watch area is approximately along and 50 statute miles east and west of a line from 40 miles north northeast of Waycross GA to 30 miles southwest of Sarasota FL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). 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. && 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 25040. ...Thompson
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 9:54 PM EDT | Mesoscale Discussion | SPC | Calhoun, Holmes, Jackson, Walton, Washington | 96 min |
| Apr 19, 12:44 AM EDT | Mesoscale Discussion | SPC | Escambia, Holmes, Okaloosa, Santa Rosa, Walton, Washington | 2 hr |
| Apr 19, 1:33 AM EDT | Tornado Watch | SPC | Bay, Calhoun, Dixie, Escambia, Franklin, Gadsden and 14 more | 9 hr |
| Apr 19, 3:42 AM EDT | Mesoscale Discussion | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Holmes and 7 more | 2 hr |
| Apr 19, 6:28 AM EDT | Mesoscale Discussion | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 4 more | 2 hr |
| Apr 19, 9:09 AM EDT | Mesoscale Discussion | SPC | Columbia, Dixie, Gadsden, Gilchrist, Hamilton, Jefferson and 6 more | 2 hr |
| Apr 19, 1:20 PM EDT | Mesoscale Discussion | SPC | Brevard, Charlotte, Citrus, Clay, Collier, DeSoto and 25 more | 85 min |
| Apr 19, 1:36 PM EDT | Severe Thunderstorm Watch | SPC | Brevard, Charlotte, Collier, DeSoto, Glades, Hardee and 16 more | 8 hr |
| Apr 19, 3:40 PM EDT | Mesoscale Discussion | SPC | Brevard, Charlotte, DeSoto, Glades, Hardee, Hendry and 12 more | 95 min |
| Apr 19, 7:11 PM EDT | Mesoscale Discussion | SPC | Broward, Martin, Miami-Dade, Monroe, Palm Beach, Saint Lucie | 94 min |
| Apr 18, 8:22 PM EDT | Severe Thunderstorm Watch | SPC | Bartow, Butts, Carroll, Chattahoochee, Chattooga, Cherokee and 34 more | 7 hr |
| Apr 18, 10:29 PM EDT | Mesoscale Discussion | SPC | Bartow, Carroll, Chattahoochee, Cobb, Coweta, Douglas and 10 more | 91 min |
| Apr 19, 10:06 AM EDT | Mesoscale Discussion | SPC | Baldwin, Bibb, Bleckley, Columbia, Elbert, Glascock and 21 more | 84 min |
| Apr 19, 10:31 AM EDT | Tornado Watch | SPC | Elbert, Hart | 9 hr |
| Apr 19, 10:44 AM EDT | Tornado Watch | SPC | Baldwin, Bryan, Bulloch, Burke, Candler, Chatham and 29 more | 5 hr |
| Apr 19, 1:19 PM EDT | Mesoscale Discussion | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 22 more | 86 min |
Nearby
Tornado Watches in Florida, 2019Tornado Watches in Georgia, 2019Every tornado watch in 2019
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.