Alert archive / Mississippi / Tornado Watches in 1998

Tornado Watch 323

May 9, 19984 states

The Storm Prediction Center issued this tornado watch at May 9, 1998, 7:30 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 9, 1998, 7:30 PM CDT (00:30 UTC)
Expired
May 10, 1998, 1:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 80 counties

Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Lee County, AR, Mississippi County, AR, Phillips County, AR, Poinsett County, AR, St. Francis County, AR, Dunklin County, MO, Pemiscot County, MO, 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, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Kemper County, MS, Lafayette County, MS, Lauderdale County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Marshall County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Union County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Yazoo County, MS, 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, McNairy County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 9, 7:31 PM CDTTornado WarningMEGCraighead, Poinsett49 min
May 9, 7:36 PM CDTTornado WarningJANKemper, Lauderdale44 min
May 9, 8:04 PM CDTSevere Thunderstorm WarningMEGMississippi51 min
May 9, 8:29 PM CDTTornado WarningMEGMississippi, Poinsett46 min
May 9, 8:57 PM CDTSevere Thunderstorm WarningMEGMississippi48 min
May 9, 9:04 PM CDTSevere Thunderstorm WarningMEGTipton51 min
May 9, 9:12 PM CDTTornado WarningJANWashington48 min
May 9, 9:30 PM CDTSevere Thunderstorm WarningMEGCarroll, Gibson50 min
May 9, 9:41 PM CDTSevere Thunderstorm WarningJANHumphreys, Sharkey49 min
May 9, 9:52 PM CDTSevere Thunderstorm WarningMEGMadison48 min
May 9, 10:00 PM CDTSevere Thunderstorm WarningJANNeshoba50 min
May 9, 10:18 PM CDTSevere Thunderstorm WarningMEGFayette47 min
May 9, 10:26 PM CDTSevere Thunderstorm WarningMEGCarroll, Henderson44 min
May 9, 10:38 PM CDTSevere Thunderstorm WarningMEGHardeman47 min
May 9, 11:07 PM CDTSevere Thunderstorm WarningMEGChester, McNairy48 min
May 9, 11:11 PM CDTSevere Thunderstorm WarningMEGHenderson29 min
May 9, 11:39 PM CDTSevere Thunderstorm WarningMEGHardin, Henderson46 min

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 0.5 hours before the alert went out and 112 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 1998-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 832 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 00:00Z on 1998-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
832 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
804 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.8

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 9, 10:30 PM CDTSevere Thunderstorm WatchSPCBedford, Benton, Cannon, Cheatham, Clay, Coffee and 38 more6 hr

Nearby

Tornado Watches in Mississippi, 1998Tornado Watches in Tennessee, 1998Tornado Watches in Arkansas, 1998Every tornado watch in 1998

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.