Alert archive / Louisiana / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 461

June 17, 19974 counties in Arkansas; 19 parishes in Louisiana; 18 counties in Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Jun 17, 1997, 6:00 AM CDT for 4 counties in Arkansas; 19 parishes in Louisiana; 18 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jun 17, 1997, 6:00 AM CDT (11:00 UTC)
Expired: Jun 17, 1997, 12:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 41 counties

Ashley County, AR, Chicot County, AR, Desha County, AR, Drew County, AR, Caldwell Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Richland Parish, LA, Sabine Parish, LA, Tensas Parish, LA, Union Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Adams County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Claiborne County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Leflore County, MS, Montgomery County, MS, Sharkey County, MS, Sunflower County, MS, Tallahatchie County, MS, Warren County, MS, Washington County, MS, Yazoo County, MS

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 17, 6:11 AM CDT	Severe Thunderstorm Warning	SHV	Ouachita	49 min
Jun 17, 6:27 AM CDT	Severe Thunderstorm Warning	SHV	Caldwell	63 min
Jun 17, 8:28 AM CDT	Severe Thunderstorm Warning	JAN	Yazoo	47 min
Jun 17, 8:29 AM CDT	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Winn	61 min

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 11.0 hours before the alert went out and 173 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: 2912 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1044 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 5.4

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
Jun 16, 7:30 PM CDT	Tornado Watch	SPC	Bradley, Calhoun, Clark, Cleburne, Cleveland, Conway and 22 more	6 hr
Jun 16, 10:00 PM CDT	Tornado Watch	SPC	Crawford, Franklin, Howard, Little River, Polk, Scott and 2 more	6 hr
Jun 16, 11:30 PM CDT	Tornado Watch	SPC	Bradley, Columbia, Lafayette, Miller, Union	7 hr
Jun 17, 1:30 AM CDT	Severe Thunderstorm Watch	SPC	Crittenden, Desha, Phillips	5 hr
Jun 17, 6:30 AM CDT	Tornado Watch	SPC	Allen, Avoyelles, Beauregard, Evangeline, Rapides, Saint Landry and 1 more	6 hr

Nearby

Severe Thunderstorm Watches in Louisiana, 1997 Severe Thunderstorm Watches in Mississippi, 1997 Severe Thunderstorm Watches in Arkansas, 1997 Every severe thunderstorm watch in 1997

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.