Alert archive / Mississippi / Severe Thunderstorm Watches in 2013

Severe Thunderstorm Watch 384

June 28, 20134 counties in Arkansas; 22 counties in Mississippi; 14 counties in Tennessee

The Storm Prediction Center issued this severe thunderstorm watch at Jun 28, 2013, 5:18 AM CDT for 4 counties in Arkansas; 22 counties in Mississippi; 14 counties in Tennessee. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Jun 28, 2013, 5:18 AM CDT (10:18 UTC)
Expired
Jun 28, 2013, 12:48 PM CDT
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 40 counties

Crittenden County, AR, Lee County, AR, Phillips County, AR, St. Francis County, AR, Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Coahoma County, MS, DeSoto County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Monroe County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Shelby County, TN, Tipton County, TN

The radar

The Memphis radar (KNQA), 26 km from the middle of the area, began a volume at 10:21 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
20%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 28, 5:24 AM CDTSevere Thunderstorm WarningMEGCrockett, Dyer, Fayette, Haywood, Lauderdale, Madison and 2 more51 min
Jun 28, 6:07 AM CDTSevere Thunderstorm WarningMEGCrittenden, Mississippi38 min
Jun 28, 9:48 AM CDTSevere Thunderstorm WarningMEGLee, St. Francis42 min
Jun 28, 10:31 AM CDTSevere Thunderstorm WarningMEGLee, Phillips44 min
Jun 28, 11:15 AM CDTSevere Thunderstorm WarningMEGLee45 min
Jun 28, 11:24 AM CDTSevere Thunderstorm WarningMEGLafayette, Marshall51 min
Jun 28, 11:37 AM CDTSevere Thunderstorm WarningMEGPontotoc, Union53 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 (KLZK), launched 00:00Z, 10.3 hours before the alert went out and 31 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 00:00Z on 2013-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4660 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2013-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.1939Sfc1 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
4660 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1631 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
81 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
Jun 28, 1:31 AM CDTMesoscale DiscussionSPCBaxter, Boone, Cleburne, Conway, Craighead, Crittenden and 30 more59 min
Jun 28, 2:13 AM CDTSevere Thunderstorm WatchSPCBaxter, Boone, Clay, Cleburne, Conway, Craighead and 20 more5 hr
Jun 28, 4:17 AM CDTMesoscale DiscussionSPCBaxter, Clay, Cleburne, Conway, Craighead, Crittenden and 22 more58 min
Jun 28, 9:42 AM CDTMesoscale DiscussionSPCChicot, Desha, Lee, Phillips2 hr
Jun 28, 12:34 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 19 more2 hr
Jun 28, 4:41 PM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Drew, Union94 min
Jun 28, 5:25 PM CDTSevere Thunderstorm WatchSPCAshley, Chicot7 hr
Jun 28, 6:16 AM CDTMesoscale DiscussionSPCAlcorn, Attala, Benton, Calhoun, Carroll, Chickasaw and 26 more89 min
Jun 28, 11:26 AM CDTSevere Thunderstorm WatchSPCClarke, George, Greene, Jasper, Jones, Kemper and 5 more9 hr
Jun 28, 1:11 PM CDTMesoscale DiscussionSPCClarke, George, Greene, Kemper, Lauderdale, Perry and 1 more94 min
Jun 28, 3:23 PM CDTMesoscale DiscussionSPCClarke, George, Greene, Jackson, Jasper, Jones and 6 more97 min

Nearby

Severe Thunderstorm Watches in Mississippi, 2013Severe Thunderstorm Watches in Tennessee, 2013Severe Thunderstorm Watches in Arkansas, 2013Every severe thunderstorm watch in 2013

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.