Alert archive / Florida / Tornado Watches in 2019

Tornado Watch 58

April 14, 201910 counties in Alabama; 12 counties in Florida

The Storm Prediction Center issued this tornado watch at Apr 14, 2019, 2:45 AM CDT for 10 counties in Alabama; 12 counties in Florida. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Apr 14, 2019, 2:45 AM CDT (07:45 UTC)
Expired: Apr 14, 2019, 9:40 AM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1 in
Strongest gust expected: 60 kt

All 22 counties

Butler County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Franklin County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Liberty County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 95 km from the middle of the area, began a volume at 07:46 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: 30%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 30%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 10%
One or more hailstones of 2 inches or more: 5%
Six or more combined severe hail and wind reports: 40%

Warnings issued inside it

10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Apr 14, 4:48 AM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Crenshaw	42 min
Apr 14, 5:16 AM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Escambia	44 min
Apr 14, 5:26 AM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	49 min
Apr 14, 5:37 AM CDT	Severe Thunderstorm Warning	MOB	Covington	53 min
Apr 14, 6:11 AM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	49 min
Apr 14, 6:24 AM CDT	Severe Thunderstorm Warning	MOB	Covington	36 min
Apr 14, 6:30 AM CDT	Severe Thunderstorm Warning	TAE	Coffee	45 min
Apr 14, 6:43 AM CDT	Tornado Warning	MOB	Crenshaw	17 min
Apr 14, 7:21 AM CDT	Severe Thunderstorm Warning	TAE	Bay, Holmes, Walton, Washington	39 min
Apr 14, 9:12 AM CDT	Tornado Warning	TAE	Dale, Geneva, Henry, Houston	33 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

Birmingham, AL (KBMX), launched 00:00Z, 7.8 hours before the alert went out and 221 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 506 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1458 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 240 m²/s²
0-3 km storm-relative helicity: 428 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 13, 7:11 PM CDT	Tornado Watch	SPC	Bibb, Blount, Colbert, Cullman, Fayette, Franklin and 19 more	11 hr
Apr 13, 8:25 PM CDT	Mesoscale Discussion	SPC	Choctaw, Washington	95 min
Apr 13, 9:13 PM CDT	Mesoscale Discussion	SPC	Bibb, Blount, Chilton, Choctaw, Colbert, Cullman and 19 more	92 min
Apr 13, 9:33 PM CDT	Tornado Watch	SPC	Baldwin, Choctaw, Clarke, Mobile, Monroe, Washington and 1 more	8 hr
Apr 13, 11:01 PM CDT	Mesoscale Discussion	SPC	Bibb, Choctaw, Clarke, Dallas, Fayette, Franklin and 15 more	119 min
Apr 14, 12:39 AM CDT	Mesoscale Discussion	SPC	Calhoun, Cherokee, Clay, Cleburne, DeKalb, Etowah and 2 more	66 min
Apr 14, 1:04 AM CDT	Tornado Watch	SPC	Autauga, Barbour, Bullock, Calhoun, Chambers, Cherokee and 19 more	9 hr
Apr 14, 2:15 AM CDT	Mesoscale Discussion	SPC	Baldwin, Butler, Choctaw, Clarke, Coffee, Conecuh and 10 more	60 min
Apr 14, 4:20 AM CDT	Mesoscale Discussion	SPC	Autauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 18 more	115 min
Apr 14, 5:36 AM CDT	Mesoscale Discussion	SPC	Autauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 18 more	54 min
Apr 14, 7:28 AM CDT	Mesoscale Discussion	SPC	Henry, Houston	3 hr
Apr 14, 9:40 AM CDT	Tornado Watch	SPC	Henry, Houston	6 hr
Apr 14, 10:07 AM CDT	Mesoscale Discussion	SPC	Barbour, Henry, Houston, Russell	83 min
Apr 14, 1:07 PM CDT	Mesoscale Discussion	SPC	Baker, Columbia, Dixie, Hamilton, Jefferson, Lafayette and 3 more	83 min

Nearby

Tornado Watches in Florida, 2019 Tornado Watches in Alabama, 2019 Every 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.