Alert archive / Florida / Tornado Watches in 2020

Tornado Watch 141

April 23, 202017 counties in Florida; 6 counties in Georgia

The Storm Prediction Center issued this tornado watch at Apr 23, 2020, 2:47 PM CDT for 17 counties in Florida; 6 counties in Georgia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 23, 2020, 2:47 PM CDT (19:47 UTC)
Expired: Apr 23, 2020, 8:50 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 23 counties

Bay County, FL, Calhoun County, FL, Dixie County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Taylor County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Brooks County, GA, Decatur County, GA, Grady County, GA, Lowndes County, GA, Seminole County, GA, Thomas County, GA

The radar

The Tallahassee radar (KTLH), 76 km from the middle of the area, began a volume at 19:48 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: 60%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 70%
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: 10%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 23, 2:50 PM CDT	Severe Thunderstorm Warning	TAE	Bay, Holmes, Walton, Washington	40 min
Apr 23, 3:04 PM CDT	Tornado Warning	TAE	Walton	26 min
Apr 23, 3:13 PM CDT	Tornado Warning	TAE	Holmes, Walton, Washington	32 min
Apr 23, 3:19 PM CDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Holmes, Jackson, Walton, Washington	56 min
Apr 23, 3:25 PM CDT	Tornado Warning	TAE	Bay, Walton, Washington	20 min
Apr 23, 3:42 PM CDT	Tornado Warning	TAE	Holmes, Jackson, Washington	33 min
Apr 23, 3:45 PM CDT	Tornado Warning	TAE	Bay, Walton, Washington	30 min
Apr 23, 3:46 PM CDT	Flash Flood Warning	TAE	Holmes, Jackson	3 hr
Apr 23, 3:55 PM CDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Gulf	35 min
Apr 23, 4:00 PM CDT	Tornado Warning Tornado observed	TAE	Bay, Calhoun, Gulf	30 min
Apr 23, 4:06 PM CDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Gadsden, Gulf, Jackson, Liberty	39 min
Apr 23, 4:44 PM CDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 3 more	61 min
Apr 23, 5:24 PM CDT	Severe Thunderstorm Warning	TAE	Franklin, Jefferson, Leon, Madison, Taylor, Wakulla	66 min
Apr 23, 5:25 PM CDT	Tornado Warning	TAE	Jefferson, Leon	35 min
Apr 23, 5:27 PM CDT	Tornado Warning	TAE	Franklin, Wakulla	33 min
Apr 23, 5:43 PM CDT	Tornado Warning	TAE	Franklin, Wakulla	32 min
Apr 23, 5:54 PM CDT	Tornado Warning	TAE	Jefferson, Leon, Taylor, Wakulla	21 min
Apr 23, 6:09 PM CDT	Severe Thunderstorm Warning	TAE	Jefferson, Lafayette, Madison, Taylor	66 min
Apr 23, 6:30 PM CDT	Tornado Warning	TAE	Taylor	60 min
Apr 23, 7:08 PM CDT	Severe Thunderstorm Warning	TAE	Dixie, Lafayette, Madison, Taylor	97 min
Apr 23, 7:21 PM CDT	Tornado Warning	TAE	Lafayette, Taylor	54 min
Apr 23, 7:51 PM CDT	Tornado Warning	TAE	Dixie, Lafayette	39 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 12:00Z, 7.8 hours before the alert went out and 79 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1318 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 455 m²/s²
0-3 km storm-relative helicity: 663 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 2:28 AM CDT	Mesoscale Discussion	SPC	Escambia, Santa Rosa	92 min
Apr 23, 4:05 AM CDT	Tornado Watch	SPC	Bay, Calhoun, Escambia, Holmes, Jackson, Okaloosa and 3 more	11 hr
Apr 23, 7:43 AM CDT	Mesoscale Discussion	SPC	Bay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 10 more	92 min
Apr 23, 9:29 AM CDT	Mesoscale Discussion	SPC	Baker, Columbia, Gadsden, Hamilton, Jackson, Jefferson and 5 more	61 min
Apr 23, 9:52 AM CDT	Tornado Watch	SPC	Franklin, Gadsden, Gulf, Hamilton, Jefferson, Leon and 4 more	6 hr
Apr 23, 12:05 PM CDT	Mesoscale Discussion	SPC	Bay, Escambia, Okaloosa, Santa Rosa, Walton, Washington	55 min
Apr 23, 2:28 PM CDT	Mesoscale Discussion	SPC	Bay, Calhoun, Franklin, Gulf, Jefferson, Leon and 6 more	62 min
Apr 23, 5:09 PM CDT	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Calhoun, Clay, Columbia and 17 more	96 min
Apr 23, 5:52 PM CDT	Tornado Watch	SPC	Alachua, Baker, Bradford, Clay, Columbia, Duval and 7 more	5 hr
Apr 23, 12:25 PM CDT	Mesoscale Discussion	SPC	Atkinson, Brantley, Clinch, Echols, Lanier, Lowndes and 3 more	95 min
Apr 23, 1:22 PM CDT	Mesoscale Discussion	SPC	Chatham, Effingham, Screven	83 min

Nearby

Tornado Watches in Florida, 2020 Tornado Watches in Georgia, 2020 Every tornado watch in 2020

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.