Alert archive / Kentucky / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 68

March 31, 20164 states

The Storm Prediction Center issued this severe thunderstorm watch at Mar 31, 2016, 10:58 AM CDT for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Mar 31, 2016, 10:58 AM CDT (15:58 UTC)
Expired
Mar 31, 2016, 4:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 57 counties

Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Jackson County, AR, Lee County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Poinsett County, AR, Prairie County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, Ballard 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, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Webster County, KY, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 80 km from the middle of the area, began a volume at 15:58 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
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 31, 10:59 AM CDTSevere Thunderstorm WarningMEGClay, Greene46 min
Mar 31, 11:02 AM CDTSevere Thunderstorm WarningLZKJackson, White, Woodruff43 min
Mar 31, 11:13 AM CDTSevere Thunderstorm WarningLZKLonoke, White32 min
Mar 31, 11:18 AM CDTSevere Thunderstorm WarningMEGCraighead, Mississippi, Poinsett42 min
Mar 31, 11:24 AM CDTSevere Thunderstorm WarningPAHNew Madrid25 min
Mar 31, 11:30 AM CDTSevere Thunderstorm WarningMEGCross, Poinsett45 min
Mar 31, 11:55 AM CDTSevere Thunderstorm WarningMEGMississippi50 min
Mar 31, 11:56 AM CDTSevere Thunderstorm WarningPAHFulton22 min
Mar 31, 12:12 PM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Mississippi, Poinsett48 min
Mar 31, 12:40 PM CDTSevere Thunderstorm WarningMEGCrockett, Dyer, Gibson, Lauderdale34 min
Mar 31, 12:50 PM CDTSevere Thunderstorm WarningMEGMississippi40 min
Mar 31, 1:22 PM CDTSevere Thunderstorm WarningPAHCaldwell, Crittenden, Hopkins, Webster27 min
Mar 31, 1:26 PM CDTSevere Thunderstorm WarningMEGFayette, Haywood, Shelby, Tipton49 min
Mar 31, 1:53 PM CDTSevere Thunderstorm WarningMEGFayette, Shelby37 min
Mar 31, 2:11 PM CDTSevere Thunderstorm WarningMEGFayette, Hardeman, Haywood, Madison49 min
Mar 31, 2:17 PM CDTSevere Thunderstorm WarningLZKJefferson, Lonoke43 min
Mar 31, 2:28 PM CDTSevere Thunderstorm WarningMEGFayette, Hardeman47 min
Mar 31, 2:44 PM CDTSevere Thunderstorm WarningLZKArkansas, Jefferson, Lonoke, Monroe, Prairie46 min
Mar 31, 2:46 PM CDTSevere Thunderstorm WarningMEGChester, Henderson, Madison44 min
Mar 31, 3:07 PM CDTSevere Thunderstorm WarningLZKArkansas, Monroe, Prairie38 min
Mar 31, 3:24 PM CDTSevere Thunderstorm WarningPAHChristian, Todd36 min
Mar 31, 3:25 PM CDTSevere Thunderstorm WarningMEGChester, Decatur, Hardin, Henderson, McNairy50 min
Mar 31, 3:33 PM CDTSevere Thunderstorm WarningMEGChester, Hardeman, McNairy42 min
Mar 31, 3:38 PM CDTTornado WarningMEGDecatur, Hardin, Henderson32 min
Mar 31, 3:39 PM CDTSevere Thunderstorm WarningMEGCross, Lee, Phillips, St. Francis51 min
Mar 31, 3:39 PM CDTTornado WarningMEGDecatur, Hardin, Henderson36 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, 4.0 hours before the alert went out and 138 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 2016-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 866 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 2016-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 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
866 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
556 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
125 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 30, 7:44 PM CDTSevere Thunderstorm WatchSPCBenton4 hr
Mar 30, 8:37 PM CDTMesoscale DiscussionSPCBenton53 min
Mar 30, 8:39 PM CDTMesoscale DiscussionSPCAshley, Bradley, Chicot, Desha, Drew, Lincoln and 1 more96 min
Mar 30, 10:00 PM CDTTornado WatchSPCAshley, Bradley, Chicot, Desha, Drew, Union6 hr
Mar 30, 11:30 PM CDTMesoscale DiscussionSPCChicot, Desha60 min
Mar 31, 10:26 AM CDTMesoscale DiscussionSPCArkansas, Cleveland, Craighead, Crittenden, Cross, Dallas and 14 more3 hr
Mar 31, 1:30 PM CDTMesoscale DiscussionSPCChicot2 hr
Mar 31, 2:05 PM CDTSevere Thunderstorm WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 7 more8 hr
Mar 31, 2:14 PM CDTMesoscale DiscussionSPCCrittenden, Cross91 min
Mar 31, 2:35 PM CDTTornado WatchSPCLee, Phillips7 hr
Mar 31, 3:48 PM CDTMesoscale DiscussionSPCLogan, Simpson, Warren87 min
Mar 31, 3:59 PM CDTSevere Thunderstorm WatchSPCAdair, Allen, Barren, Casey, Clinton, Cumberland and 9 more5 hr
Mar 31, 5:09 PM CDTMesoscale DiscussionSPCBallard, Caldwell, Carlisle, Crittenden, Daviess, Graves and 10 more96 min
Mar 31, 5:49 PM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Boyle, Breathitt, Casey and 28 more56 min
Mar 31, 3:04 AM CDTMesoscale DiscussionSPCAmite, Clarke, Copiah, Covington, Forrest, Franklin and 19 more86 min
Mar 31, 3:20 AM CDTTornado WatchSPCAmite, Covington, Forrest, Jasper, Jefferson Davis, Jones and 10 more6 hr
Mar 31, 7:47 AM CDTMesoscale DiscussionSPCCovington, Forrest, Greene, Jefferson Davis, Jones, Lamar and 3 more58 min
Mar 31, 8:43 AM CDTTornado WatchSPCGeorge, Greene, Perry, Stone5 hr
Mar 31, 3:30 PM CDTMesoscale DiscussionSPCAmite, Covington, Forrest, Franklin, George, Greene and 13 more2 hr
Mar 31, 4:47 PM CDTMesoscale DiscussionSPCAlcorn, Attala, Benton, Bolivar, Calhoun, Carroll and 55 more58 min
Mar 31, 5:58 PM CDTTornado WatchSPCWayne7 hr
Mar 31, 6:52 PM CDTMesoscale DiscussionSPCAlcorn, Calhoun, Chickasaw, Choctaw, Clarke, Clay and 29 more53 min
Mar 30, 10:48 PM CDTMesoscale DiscussionSPCDallas, Greene, Laclede, Lawrence, Newton, Polk and 1 more57 min
Mar 31, 12:36 PM CDTMesoscale DiscussionSPCSaint Louis, City of Saint Louis84 min

Nearby

Severe Thunderstorm Watches in Kentucky, 2016Severe Thunderstorm Watches in Tennessee, 2016Severe Thunderstorm Watches in Arkansas, 2016Every severe thunderstorm watch in 2016

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.