Alert archive / Kentucky / Tornado Watches in 2022

Tornado Watch 36

March 7, 20224 states

The Storm Prediction Center issued this tornado watch at Mar 7, 2022, 1:52 AM CST for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Mar 7, 2022, 1:52 AM CST (07:52 UTC)
Expired
Mar 7, 2022, 6:43 AM CST
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
0.5 in
Strongest gust expected
60 kt
All 38 counties

Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Perry County, IN, Spencer County, IN, Ballard County, KY, Breckinridge County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Grayson County, KY, Hancock County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Ohio County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Montgomery County, TN, Stewart County, TN

The radar

The Ft Campbell radar (KHPX), 63 km from the middle of the area, began a volume at 07:55 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
50%
One or more gusts of 65 knots or more
10%
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

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

IssuedProductOfficeCountiesLasted
Mar 7, 3:35 AM CSTTornado WarningPAHCalloway, Graves, Marshall14 min
Mar 7, 3:55 AM CSTSevere Thunderstorm WarningPAHCalloway, Marshall25 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

Nashville Metro, TN (KBNA), launched 00:00Z, 7.9 hours before the alert went out and 153 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2022-03-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 154 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2022-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
154 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
1322 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 6, 10:48 PM CSTMesoscale DiscussionSPCAlexander, Massac, Pulaski, Union117 min
Mar 7, 1:31 AM CSTMesoscale DiscussionSPCAlexander, Gallatin, Hardin, Johnson, Massac, Pope and 1 more89 min
Mar 7, 4:05 AM CSTMesoscale DiscussionSPCBreckinridge, Butler, Calloway, Christian, Grayson, Hopkins and 5 more85 min
Mar 7, 4:20 AM CSTMesoscale DiscussionSPCBracken, Campbell, Grant, Kenton, Owen, Pendleton115 min
Mar 7, 12:44 AM CSTMesoscale DiscussionSPCLauderdale, Shelby, Tipton91 min
Mar 7, 1:07 AM CSTTornado WatchSPCBenton, Carroll, Chester, Crockett, Dyer, Fayette and 12 more6 hr
Mar 7, 1:20 PM CSTMesoscale DiscussionSPCBlount, Cocke, Greene, Hamblen, Jefferson, Monroe and 4 more2 hr

Nearby

Tornado Watches in Kentucky, 2022Tornado Watches in Illinois, 2022Tornado Watches in Indiana, 2022Every tornado watch in 2022

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.