Alert archive / Mississippi / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 368

May 14, 2003Phillips County, Arkansas; 32 counties in Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at May 14, 2003, 11:10 AM CDT for Phillips County, Arkansas; 32 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 14, 2003, 11:10 AM CDT (16:10 UTC)
Expired
May 14, 2003, 5:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 33 counties

Phillips County, AR, Attala County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Coahoma County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Leflore County, MS, Madison County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Quitman County, MS, Scott County, MS, Sharkey County, MS, Sunflower County, MS, Tallahatchie County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Yazoo County, MS

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 12:00Z, 4.2 hours before the alert went out and 130 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 2003-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 869 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 2003-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 square meters per square second.1939587897Sfc1 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
869 J/kg
Mixed-layer CIN
-116 J/kg
Mixed-layer LCL
474 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 13, 8:05 PM CDTMesoscale DiscussionSPCColumbia, Hempstead, Lafayette, Miller, Nevada55 min
May 14, 5:50 AM CDTMesoscale DiscussionSPCHoward, Little River, Miller, Sevier115 min
May 14, 10:26 AM CDTMesoscale DiscussionSPCDesha, Phillips94 min
May 14, 10:55 AM CDTMesoscale DiscussionSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more2 hr
May 14, 2:30 PM CDTTornado WatchSPCBradley, Calhoun, Clark, Cleveland, Columbia, Dallas and 10 more6 hr
May 14, 5:17 PM CDTMesoscale DiscussionSPCColumbia, Hempstead, Lafayette, Little River, Miller, Nevada and 1 more118 min
May 14, 6:10 PM CDTSevere Thunderstorm WatchSPCAshley, Columbia, Lafayette, Nevada, Union6 hr
May 14, 2:28 PM CDTMesoscale DiscussionSPCAttala, Carroll, Chickasaw, Choctaw, Clay, Holmes and 18 more62 min

Nearby

Severe Thunderstorm Watches in Mississippi, 2003Severe Thunderstorm Watches in Arkansas, 2003Every severe thunderstorm watch in 2003

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.