Alert archive / Tennessee / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 176

May 22, 20144 states

The Storm Prediction Center issued this severe thunderstorm watch at May 22, 2014, 2:33 PM CDT for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 22, 2014, 2:33 PM CDT (19:33 UTC)
Expired
May 22, 2014, 7:55 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 83 counties

Alexander County, IL, Massac County, IL, Pulaski County, IL, Adair County, KY, Allen County, KY, Ballard County, KY, Barren County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Clinton County, KY, Crittenden County, KY, Cumberland County, KY, Edmonson County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McCreary County, KY, Metcalfe County, KY, Monroe County, KY, Muhlenberg County, KY, Russell County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Wayne County, KY, Mississippi County, MO, New Madrid County, MO, Scott County, MO, Stoddard County, MO, Anderson County, TN, Benton County, TN, Bledsoe County, TN, Blount County, TN, Campbell County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Henry County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Knox County, TN, Loudon County, TN, Macon County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Montgomery County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Robertson County, TN, Rutherford County, TN, Scott County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, Weakley County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Ft Campbell radar (KHPX), 10 km from the middle of the area, began a volume at 19:36 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
10%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 22, 2:41 PM CDTSevere Thunderstorm WarningPAHCaldwell, Christian, Hopkins34 min
May 22, 2:56 PM CDTSevere Thunderstorm WarningLMKBarren, Edmonson, Warren29 min
May 22, 3:41 PM CDTSevere Thunderstorm WarningPAHChristian, Hopkins, Muhlenberg, Todd49 min
May 22, 4:05 PM CDTSevere Thunderstorm WarningLMKAllen, Barren30 min
May 22, 4:10 PM CDTSevere Thunderstorm WarningPAHTodd35 min
May 22, 4:18 PM CDTSevere Thunderstorm WarningLMKAllen, Barren, Monroe32 min
May 22, 4:19 PM CDTSevere Thunderstorm WarningOHXClay, Jackson, Macon41 min
May 22, 4:20 PM CDTSevere Thunderstorm WarningJKLMcCreary, Wayne40 min
May 22, 4:31 PM CDTSevere Thunderstorm WarningLMKLogan29 min
May 22, 4:58 PM CDTSevere Thunderstorm WarningOHXClay, Jackson, Macon, Overton, Smith32 min
May 22, 5:27 PM CDTSevere Thunderstorm WarningOHXJackson, Overton, Putnam33 min
May 22, 5:29 PM CDTSevere Thunderstorm WarningOHXJackson, Macon, Putnam, Smith, Trousdale46 min
May 22, 5:57 PM CDTSevere Thunderstorm WarningMRXAnderson, Campbell, Morgan, Roane, Scott33 min
May 22, 6:27 PM CDTSevere Thunderstorm WarningMRXAnderson, Knox48 min
May 22, 6:39 PM CDTSevere Thunderstorm WarningMRXLoudon, McMinn, Meigs, Monroe, Rhea, Roane36 min
May 22, 6:55 PM CDTSevere Thunderstorm WarningMRXBlount, Knox, Loudon, Monroe, Roane35 min
May 22, 7:29 PM CDTSevere Thunderstorm WarningMRXBlount, Monroe31 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 12:00Z, 7.6 hours before the alert went out and 98 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 12:00Z on 2014-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 650 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 12:00Z on 2014-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 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
650 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
820 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 21, 7:28 PM CDTSevere Thunderstorm WatchSPCChampaign, Christian, Clark, Clay, Coles, Crawford and 19 more7 hr
May 21, 11:39 PM CDTMesoscale DiscussionSPCClark, Coles, Crawford, Cumberland, Douglas, Edgar96 min
May 21, 8:27 PM CDTMesoscale DiscussionSPCAdair, Anderson, Barren, Bell, Boyle, Breathitt and 60 more93 min
May 22, 2:53 AM CDTMesoscale DiscussionSPCAdair, Anderson, Boyle, Breckinridge, Bullitt, Casey and 35 more97 min
May 22, 2:09 PM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Bell, Butler, Caldwell and 43 more2 hr
May 22, 6:47 PM CDTMesoscale DiscussionSPCCalloway, Carlisle, Christian, Graves, Logan, Lyon and 4 more88 min
May 22, 2:16 AM CDTMesoscale DiscussionSPCBuchanan, Holt, Platte119 min
May 22, 5:12 PM CDTMesoscale DiscussionSPCBarton, Camden, Cedar, Dade, Dallas, Greene and 8 more93 min

Nearby

Severe Thunderstorm Watches in Tennessee, 2014Severe Thunderstorm Watches in Kentucky, 2014Severe Thunderstorm Watches in Missouri, 2014Every severe thunderstorm watch in 2014

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.