Alert archive / Mississippi / Severe Thunderstorm Watches in 1998

Severe Thunderstorm Watch 261

April 27, 19984 states

The Storm Prediction Center issued this severe thunderstorm watch at Apr 27, 1998, 3:30 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 27, 1998, 3:30 PM CDT (20:30 UTC)
Expired: Apr 27, 1998, 9:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 63 counties

Arkansas County, AR, Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Cleveland County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Grant County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Ouachita County, AR, Phillips County, AR, Prairie County, AR, St. Francis County, AR, Union County, AR, Bienville Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Richland Parish, LA, Tensas Parish, LA, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Benton County, MS, Bolivar County, MS, Carroll County, MS, Claiborne County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Lafayette County, MS, Leflore County, MS, Marshall County, MS, Panola County, MS, Quitman County, MS, Sharkey County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tunica County, MS, Warren County, MS, Washington County, MS, Yalobusha County, MS, Yazoo County, MS, Shelby County, TN

The radar

The Little Rock radar (KLZK), 183 km from the middle of the area, began a volume at 20:31 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.

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 27, 3:32 PM CDT	Severe Thunderstorm Warning	SHV	Lincoln	48 min
Apr 27, 3:48 PM CDT	Severe Thunderstorm Warning	MEG	Phillips	32 min
Apr 27, 4:02 PM CDT	Severe Thunderstorm Warning	MEG	Lee	48 min
Apr 27, 4:36 PM CDT	Severe Thunderstorm Warning	SHV	De Soto	49 min
Apr 27, 4:50 PM CDT	Severe Thunderstorm Warning	MEG	DeSoto	50 min
Apr 27, 5:29 PM CDT	Severe Thunderstorm Warning	MEG	Shelby	51 min
Apr 27, 5:31 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	49 min
Apr 27, 5:31 PM CDT	Severe Thunderstorm Warning	SHV	Red River	34 min
Apr 27, 5:37 PM CDT	Severe Thunderstorm Warning	MEG	DeSoto	33 min
Apr 27, 5:43 PM CDT	Severe Thunderstorm Warning	MEG	Marshall	47 min
Apr 27, 5:55 PM CDT	Severe Thunderstorm Warning	MEG	Tate	35 min
Apr 27, 6:00 PM CDT	Severe Thunderstorm Warning	SHV	Bienville	45 min
Apr 27, 6:29 PM CDT	Tornado Warning	MEG	Marshall	36 min
Apr 27, 6:33 PM CDT	Tornado Warning	SHV	Bienville, Jackson	32 min
Apr 27, 6:43 PM CDT	Tornado Warning	MEG	Benton	47 min
Apr 27, 6:50 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar	45 min
Apr 27, 7:00 PM CDT	Flash Flood Warning	MEG	Benton, Marshall	3 hr
Apr 27, 7:07 PM CDT	Severe Thunderstorm Warning	MEG	Coahoma	33 min
Apr 27, 7:11 PM CDT	Severe Thunderstorm Warning	LZK	Drew	49 min
Apr 27, 7:11 PM CDT	Tornado Warning	SHV	Winn	49 min
Apr 27, 7:17 PM CDT	Severe Thunderstorm Warning	MEG	Tate	33 min
Apr 27, 7:18 PM CDT	Severe Thunderstorm Warning	MEG	Marshall	47 min
Apr 27, 7:23 PM CDT	Severe Thunderstorm Warning	JAN	Sunflower	47 min
Apr 27, 7:24 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	46 min
Apr 27, 7:44 PM CDT	Tornado Warning	MEG	Marshall	51 min
Apr 27, 7:47 PM CDT	Tornado Warning	JAN	Sunflower	33 min
Apr 27, 7:48 PM CDT	Tornado Warning	SHV	Ouachita	32 min
Apr 27, 7:48 PM CDT	Severe Thunderstorm Warning	MEG	Tunica	47 min
Apr 27, 8:02 PM CDT	Severe Thunderstorm Warning	SHV	Winn	48 min
Apr 27, 8:12 PM CDT	Severe Thunderstorm Warning	JAN	Leflore	48 min
Apr 27, 8:24 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	61 min
Apr 27, 8:30 PM CDT	Severe Thunderstorm Warning	MEG	Tallahatchie	30 min
Apr 27, 8:33 PM CDT	Tornado Warning	MEG	Benton, Marshall	47 min
Apr 27, 8:38 PM CDT	Flash Flood Warning	MEG	Benton, Marshall, Tippah	3 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 8.5 hours before the alert went out and 195 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 935 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 532 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 197 m²/s²
0-3 km storm-relative helicity: 225 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.8

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.

Issued	Product	Office	Counties	Lasted
Apr 27, 3:15 PM CDT	Tornado Watch	SPC	Baxter, Boone, Clay, Cleburne, Craighead, Crittenden and 17 more	6 hr

Nearby

Severe Thunderstorm Watches in Mississippi, 1998 Severe Thunderstorm Watches in Arkansas, 1998 Severe Thunderstorm Watches in Louisiana, 1998 Every severe thunderstorm 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; radar from the NEXRAD Level II archive.