Alert archive / Louisiana / Tornado Watches in 2023

Tornado Watch 87

March 26, 202317 parishes in Louisiana; 10 counties in Texas

The Storm Prediction Center issued this tornado watch at Mar 26, 2023, 12:44 PM CDT for 17 parishes in Louisiana; 10 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 26, 2023, 12:44 PM CDT (17:44 UTC)
Expired
Mar 26, 2023, 7:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt
All 27 counties

Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Grant Parish, LA, LaSalle Parish, LA, Natchitoches Parish, LA, Rapides Parish, LA, Sabine Parish, LA, Saint Landry Parish, LA, Tensas Parish, LA, Vernon Parish, LA, Winn Parish, LA, Angelina County, TX, Hardin County, TX, Jasper County, TX, Liberty County, TX, Newton County, TX, Polk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Tyler County, TX

The radar

The Ft Polk radar (KPOE), 16 km from the middle of the area, began a volume at 17:47 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
50%
One or more EF2 to EF5 tornadoes
30%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
70%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 26, 1:05 PM CDTSevere Thunderstorm WarningSHVAngelina, Nacogdoches, San Augustine55 min
Mar 26, 1:16 PM CDTSevere Thunderstorm WarningLCHTyler14 min
Mar 26, 1:35 PM CDTSevere Thunderstorm WarningLCHTyler25 min
Mar 26, 2:00 PM CDTSevere Thunderstorm WarningLCHJasper, Tyler15 min
Mar 26, 2:07 PM CDTSevere Thunderstorm WarningSHVSabine68 min
Mar 26, 2:14 PM CDTSevere Thunderstorm WarningLCHJasper, Newton, Tyler31 min
Mar 26, 2:36 PM CDTSevere Thunderstorm WarningLCHBeauregard, Vernon24 min
Mar 26, 2:47 PM CDTSevere Thunderstorm WarningLCHVernon28 min
Mar 26, 2:48 PM CDTSevere Thunderstorm WarningJANFranklin, Madison, Tensas57 min
Mar 26, 2:53 PM CDTSevere Thunderstorm WarningSHVNatchitoches, Sabine67 min
Mar 26, 2:59 PM CDTSevere Thunderstorm Warning Considerable damage threatLCHBeauregard, Vernon31 min
Mar 26, 3:15 PM CDTSevere Thunderstorm WarningLCHVernon18 min
Mar 26, 3:23 PM CDTSevere Thunderstorm WarningSHVCaldwell, Grant, LaSalle, Winn67 min
Mar 26, 3:29 PM CDTSevere Thunderstorm WarningJANFranklin, Richland40 min
Mar 26, 3:31 PM CDTTornado WarningLCHBeauregard, Vernon18 min
Mar 26, 3:36 PM CDTSevere Thunderstorm WarningSHVGrant, LaSalle, Natchitoches, Winn54 min
Mar 26, 3:38 PM CDTSevere Thunderstorm Warning Considerable damage threatJANMadison, Tensas67 min
Mar 26, 3:48 PM CDTSevere Thunderstorm Warning Considerable damage threatLCHAllen, Beauregard, Vernon27 min
Mar 26, 3:50 PM CDTSevere Thunderstorm WarningJANFranklin40 min
Mar 26, 4:11 PM CDTSevere Thunderstorm WarningLCHAllen, Evangeline, Rapides, Vernon34 min
Mar 26, 4:21 PM CDTTornado WarningLCHAllen, Evangeline, Rapides13 min
Mar 26, 4:21 PM CDTSevere Thunderstorm WarningSHVCaldwell, Grant, LaSalle, Winn30 min
Mar 26, 4:26 PM CDTSevere Thunderstorm WarningSHVNatchitoches, Sabine49 min
Mar 26, 4:28 PM CDTSevere Thunderstorm WarningJANCatahoula, Franklin, Tensas62 min
Mar 26, 4:28 PM CDTSevere Thunderstorm WarningLCHAvoyelles, Rapides24 min
Mar 26, 4:32 PM CDTSevere Thunderstorm WarningLCHAvoyelles, Evangeline, Rapides28 min
Mar 26, 4:56 PM CDTSevere Thunderstorm Warning Considerable damage threatLCHAvoyelles, Evangeline, Rapides43 min
Mar 26, 5:11 PM CDTSevere Thunderstorm WarningJANTensas48 min
Mar 26, 5:13 PM CDTSevere Thunderstorm WarningSHVGrant, Natchitoches, Winn62 min
Mar 26, 5:18 PM CDTTornado WarningLCHAvoyelles27 min
Mar 26, 5:27 PM CDTSevere Thunderstorm WarningJANConcordia50 min
Mar 26, 5:38 PM CDTSevere Thunderstorm WarningLCHAvoyelles22 min
Mar 26, 6:08 PM CDTSevere Thunderstorm WarningSHVCaldwell, Grant, LaSalle, Winn52 min
Mar 26, 6:19 PM CDTSevere Thunderstorm Warning Considerable damage threatJANEast Carroll, Franklin, Madison, Richland, West Carroll56 min
Mar 26, 6:37 PM CDTSevere Thunderstorm Warning Considerable damage threatJANCatahoula, Franklin, Tensas68 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 5.7 hours before the alert went out and 102 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 2023-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 766 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 2023-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 152 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
766 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
584 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
152 m²/s²
0-3 km storm-relative helicity
245 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 26, 1:55 AM CDTMesoscale DiscussionSPCAscension, East Baton Rouge, East Feliciana, Livingston, Saint Helena, Saint Tammany and 4 more2 hr
Mar 26, 10:45 AM CDTMesoscale DiscussionSPCBeauregard, Sabine, Vernon2 hr
Mar 26, 1:58 PM CDTMesoscale DiscussionSPCBeauregard, De Soto, Grant, Jackson, Natchitoches, Rapides and 4 more92 min
Mar 26, 3:06 PM CDTMesoscale DiscussionSPCCatahoula, Concordia, East Feliciana, Franklin, Madison, Pointe Coupee and 5 more114 min
Mar 26, 3:57 PM CDTTornado WatchSPCCatahoula, Concordia, East Feliciana, Franklin, Madison, Pointe Coupee and 5 more7 hr

Nearby

Tornado Watches in Louisiana, 2023Tornado Watches in Texas, 2023Every tornado watch in 2023

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.