Alert archive / Mississippi / Tornado Watches in 1999

Tornado Watch 213

May 5, 199910 counties in Arkansas; 37 counties in Mississippi

The Storm Prediction Center issued this tornado watch at May 5, 1999, 7:45 AM CDT for 10 counties in Arkansas; 37 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 5, 1999, 7:45 AM CDT (12:45 UTC)
Expired
May 5, 1999, 2:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 47 counties

Arkansas County, AR, Ashley County, AR, Chicot County, AR, Desha County, AR, Drew County, AR, Lee County, AR, Lincoln County, AR, Monroe County, AR, Phillips County, AR, St. Francis County, AR, Alcorn County, MS, Attala County, MS, Benton County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Leflore County, MS, Marshall County, MS, Monroe County, MS, Montgomery County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 5, 7:56 AM CDTSevere Thunderstorm WarningJANAshley49 min
May 5, 8:20 AM CDTSevere Thunderstorm WarningJANChicot35 min
May 5, 8:43 AM CDTSevere Thunderstorm WarningJANWashington32 min
May 5, 9:11 AM CDTSevere Thunderstorm WarningJANBolivar, Sunflower49 min
May 5, 10:25 AM CDTSevere Thunderstorm WarningMEGCalhoun, Yalobusha50 min
May 5, 1:52 PM CDTSevere Thunderstorm WarningLZKCleveland, Lincoln48 min

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 0.8 hours before the alert went out and 131 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 1999-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 72 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 1999-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
72 J/kg
Mixed-layer CIN
-256 J/kg
Mixed-layer LCL
1942 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 5, 2:00 PM CDTTornado WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clay and 29 more7 hr
May 5, 5:00 PM CDTTornado WatchSPCLee, Phillips4 hr

Nearby

Tornado Watches in Mississippi, 1999Tornado Watches in Arkansas, 1999Every tornado watch in 1999

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.