Alert archive / Louisiana / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 37

January 27, 199720 parishes in Louisiana; 10 counties in Mississippi; 7 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jan 27, 1997, 1:45 PM CST for 20 parishes in Louisiana; 10 counties in Mississippi; 7 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jan 27, 1997, 1:45 PM CST (19:45 UTC)
Expired
Jan 27, 1997, 7:00 PM CST
In force
5 hr
Issued by
the Storm Prediction Center
All 37 counties

Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Grant Parish, LA, Jefferson Davis Parish, LA, LaSalle Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Saint Helena Parish, LA, Saint Landry Parish, LA, Vernon Parish, LA, Washington Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Claiborne County, MS, Copiah County, MS, Franklin County, MS, Jefferson County, MS, Lincoln County, MS, Pike County, MS, Walthall County, MS, Wilkinson County, MS, Hardin County, TX, Jasper County, TX, Jefferson County, TX, Newton County, TX, Orange County, TX, Sabine County, TX, Tyler County, TX

The radar

The Ft Polk radar (KPOE), 20 km from the middle of the area, began a volume at 19:47 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

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

IssuedProductOfficeCountiesLasted
Jan 27, 2:50 PM CSTSevere Thunderstorm WarningLIXAmite, Wilkinson25 min
Jan 27, 3:24 PM CSTSevere Thunderstorm WarningLIXAmite36 min
Jan 27, 3:28 PM CSTSevere Thunderstorm WarningLCHBeauregard62 min
Jan 27, 3:31 PM CSTSevere Thunderstorm WarningLCHNewton59 min
Jan 27, 3:46 PM CSTTornado WarningLCHAllen, Beauregard59 min
Jan 27, 4:33 PM CSTSevere Thunderstorm WarningLIXAmite42 min
Jan 27, 4:42 PM CSTSevere Thunderstorm WarningLIXPike48 min
Jan 27, 5:30 PM CSTSevere Thunderstorm WarningLIXPike, Walthall30 min
Jan 27, 6:02 PM CSTSevere Thunderstorm WarningLIXWalthall28 min

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.8 hours before the alert went out and 105 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, Lake Charles Mun, LA at 12:00Z on 1997-01-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 531 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, Lake Charles Mun, LA at 12:00Z on 1997-01-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.193958Sfc1 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
531 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
480 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
208 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Jan 27, 2:45 PM CSTSevere Thunderstorm WatchSPCBienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 16 more5 hr
Jan 27, 5:15 PM CSTSevere Thunderstorm WatchSPCEast Carroll, Madison, Tensas7 hr
Jan 27, 4:00 PM CSTSevere Thunderstorm WatchSPCAngelina, Aransas, Austin, Brazoria, Brazos, Burleson and 28 more6 hr

Nearby

Severe Thunderstorm Watches in Louisiana, 1997Severe Thunderstorm Watches in Mississippi, 1997Severe Thunderstorm Watches in Texas, 1997Every 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; radar from the NEXRAD Level II archive.