Alert archive / Texas / Tornado Watches in 1997

Tornado Watch 342

May 27, 199719 parishes in Louisiana; 26 counties in Texas

The Storm Prediction Center issued this tornado watch at May 27, 1997, 7:00 PM CDT for 19 parishes in Louisiana; 26 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 27, 1997, 7:00 PM CDT (00:00 UTC)
Expired: May 28, 1997, 1:00 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 45 counties

Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, East Carroll Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Anderson County, TX, Angelina County, TX, Brazos County, TX, Cherokee County, TX, Freestone County, TX, Gregg County, TX, Harrison County, TX, Houston County, TX, Jasper County, TX, Leon County, TX, Madison County, TX, Marion County, TX, Milam County, TX, Nacogdoches County, TX, Panola County, TX, Polk County, TX, Robertson County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Trinity County, TX, Tyler County, TX, Walker County, TX, Williamson County, TX

The radar

The Shreveport radar (KSHV), 147 km from the middle of the area, began a volume at 00:03 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

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

Issued	Product	Office	Counties	Lasted
May 27, 7:01 PM CDT	Severe Thunderstorm Warning	SHV	Sabine	59 min
May 27, 7:09 PM CDT	Flash Flood Warning	SHV	Harrison, Panola	4 hr
May 27, 7:14 PM CDT	Severe Thunderstorm Warning	SHV	Jackson, Lincoln	61 min
May 27, 7:16 PM CDT	Severe Thunderstorm Warning	HGX	Brazos, Madison	59 min
May 27, 7:22 PM CDT	Severe Thunderstorm Warning	FWD	Leon	53 min
May 27, 7:30 PM CDT	Severe Thunderstorm Warning	FWD	Robertson	30 min
May 27, 7:37 PM CDT	Severe Thunderstorm Warning	SHV	Panola	38 min
May 27, 7:50 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Ouachita	55 min
May 27, 7:57 PM CDT	Severe Thunderstorm Warning	HGX	Walker	63 min
May 27, 8:09 PM CDT	Severe Thunderstorm Warning	SHV	Natchitoches	51 min
May 27, 8:12 PM CDT	Tornado Warning	SHV	Ouachita	48 min
May 27, 8:14 PM CDT	Severe Thunderstorm Warning	SHV	De Soto	61 min
May 27, 8:20 PM CDT	Tornado Warning	JAN	Richland	40 min
May 27, 8:44 PM CDT	Severe Thunderstorm Warning	SHV	Panola	61 min
May 27, 8:56 PM CDT	Severe Thunderstorm Warning	JAN	Richland	34 min
May 27, 9:10 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Madison	50 min
May 27, 10:31 PM CDT	Severe Thunderstorm Warning	SHV	Angelina	59 min
May 27, 10:44 PM CDT	Tornado Warning	SHV	Angelina	46 min
May 27, 11:33 PM CDT	Tornado Warning	SHV	Angelina	27 min
May 27, 11:40 PM CDT	Flash Flood Warning	HGX	Grimes, Walker	2 hr
May 27, 11:50 PM CDT	Severe Thunderstorm Warning	LCH	Jasper	70 min
May 28, 12:23 AM CDT	Severe Thunderstorm Warning	HGX	Grimes, Montgomery, Walker	67 min
May 28, 12:43 AM CDT	Severe Thunderstorm Warning	HGX	Houston	62 min

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.0 hours before the alert went out and 235 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: 3458 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 843 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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
May 27, 8:00 PM CDT	Tornado Watch	SPC	Caldwell, Catahoula, East Carroll, Franklin, Grant, LaSalle and 4 more	5 hr
May 28, 1:30 PM CDT	Severe Thunderstorm Watch	SPC	Acadia, Ascension, Assumption, Avoyelles, East Baton Rouge, East Feliciana and 22 more	6 hr
May 27, 9:00 PM CDT	Tornado Watch	SPC	Aransas, Atascosa, Bee, Bexar, Calhoun, DeWitt and 25 more	6 hr
May 27, 10:45 PM CDT	Severe Thunderstorm Watch	SPC	Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Kleberg and 3 more	5 hr
May 28, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	Austin, Colorado, DeWitt, Fort Bend, Goliad, Jackson and 6 more	6 hr
May 28, 5:15 PM CDT	Tornado Watch	SPC	Andrews, Armstrong, Bailey, Briscoe, Carson, Castro and 29 more	5 hr

Nearby

Tornado Watches in Texas, 1997 Tornado Watches in Louisiana, 1997 Every tornado 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.