Alert archive / Tennessee / Tornado Watches in 2019

Tornado Watch 122

May 2, 20198 counties in Kentucky; 4 counties in Missouri; 10 counties in Tennessee

The Storm Prediction Center issued this tornado watch at May 2, 2019, 4:49 PM CDT for 8 counties in Kentucky; 4 counties in Missouri; 10 counties in Tennessee. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 2, 2019, 4:49 PM CDT (21:49 UTC)
Expired
May 2, 2019, 9:40 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
50 kt
All 22 counties

Ballard County, KY, Calloway County, KY, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Marshall County, KY, McCracken County, KY, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Stoddard County, MO, Benton County, TN, Carroll County, TN, Crockett County, TN, Dyer County, TN, Gibson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Weakley County, TN

The radar

The Paducah radar (KPAH), 99 km from the middle of the area, began a volume at 21:51 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
20%
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
10%
Six or more combined severe hail and wind reports
30%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 2, 5:06 PM CDTTornado WarningMEGPemiscot24 min
May 2, 5:26 PM CDTSevere Thunderstorm WarningMEGPemiscot49 min
May 2, 6:02 PM CDTSevere Thunderstorm WarningMEGPemiscot43 min
May 2, 6:15 PM CDTSevere Thunderstorm WarningMEGPemiscot15 min
May 2, 6:26 PM CDTTornado Warning Tornado observedMEGPemiscot34 min
May 2, 6:56 PM CDTTornado WarningMEGLake, Obion49 min
May 2, 7:20 PM CDTSevere Thunderstorm WarningPAHFulton, Hickman25 min
May 2, 7:43 PM CDTSevere Thunderstorm WarningPAHFulton, Hickman32 min
May 2, 7:43 PM CDTTornado WarningMEGObion, Weakley25 min
May 2, 8:00 PM CDTSevere Thunderstorm WarningPAHFulton, Hickman45 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

Little Rock, AR (KBYH), launched 12:00Z, 9.8 hours before the alert went out and 173 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, Little Rock, AR at 12:00Z on 2019-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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, Little Rock, AR at 12:00Z on 2019-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.193958Sfc1 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
18 J/kg
Mixed-layer CIN
-199 J/kg
Mixed-layer LCL
888 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
10 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.

IssuedProductOfficeCountiesLasted
May 2, 12:22 PM CDTMesoscale DiscussionSPCAdair, Allen, Anderson, Barren, Bath, Boone and 73 more113 min
May 2, 4:36 PM CDTMesoscale DiscussionSPCBallard, Carlisle, Fulton, Graves, Hickman, McCracken54 min
May 2, 6:37 PM CDTMesoscale DiscussionSPCBallard, Calloway, Carlisle, Fulton, Graves, Hickman and 2 more83 min
May 2, 1:47 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot118 min
May 2, 2:13 PM CDTTornado WatchSPCDunklin5 hr

Nearby

Tornado Watches in Tennessee, 2019Tornado Watches in Kentucky, 2019Tornado Watches in Missouri, 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.