Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 131, NWS Shreveport, LA

April 18, 2019Angelina County, Nacogdoches County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 18, 2019, 3:25 AM CDT for Angelina County, Nacogdoches County, Texas. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 18, 2019, 3:25 AM CDT (08:25 UTC)
Expired
Apr 18, 2019, 4:30 AM CDT
In force
65 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Angelina County, TX, Nacogdoches County, TX

The radar

The Shreveport radar (KSHV), 134 km from the middle of the area, began a volume at 08:27 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 18, 1:09 AM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 8.4 hours before the alert went out and 199 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 00:00Z on 2019-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 553 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 00:00Z on 2019-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 195 square meters per square second.19395878Sfc1 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
553 J/kg
Mixed-layer CIN
-209 J/kg
Mixed-layer LCL
597 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
195 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 18, 3:25 AM CDT, 0 minutes earlier.

Area forecast discussion, Apr 18, 3:25 AM CDT, 0 minutes before
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Hazardous weather outlook, Apr 17, 11:56 AM CDT, 15 hours 29 minutes before
Hazardous Weather Outlook
National Weather Service Shreveport LA
1156 AM CDT Wed Apr 17 2019

ARZ050-051-059-060-070-OKZ077-TXZ096-097-108>112-124-125-136-149-
165>167-181700-
Sevier-Howard-Little River-Hempstead-Miller-McCurtain-Red River-
Bowie-Franklin-Titus-Camp-Morris-Cass-Wood-Upshur-Smith-Cherokee-
Angelina-San Augustine-Sabine-
1156 AM CDT Wed Apr 17 2019

This Hazardous Weather Outlook is for portions of southwest
Arkansas, southeast Oklahoma, east Texas, and northeast Texas.

.DAY ONE...This Afternoon and Tonight...

Strong to severe thunderstorms remain possible during tonight and
into Thursday morning. Large hail, damaging winds, and even a
tornado or two remain possible. Locally heavy rainfall may lead
to isolated flash flooding.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

Strong to severe thunderstorms will continue into Thursday. Large
hail, damaging winds, and a tornado or two will be possible. In
addition, locally heavy rainfall may lead to isolated flash
flooding. The severe weather threat should end from west to east
by Thursday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight and into Thursday.

ARZ061-071>073-LAZ001>006-010>014-TXZ126-137-138-150>153-181700-
Nevada-Lafayette-Columbia-Union-Caddo-Bossier-Webster-Claiborne-
Lincoln-De Soto-Red River-Bienville-Jackson-Ouachita-Marion-Gregg-
Harrison-Rusk-Panola-Nacogdoches-Shelby-
1156 AM CDT Wed Apr 17 2019

This Hazardous Weather Outlook is for portions of south central
Arkansas, southwest Arkansas, north central Louisiana, northwest
Louisiana, east Texas, and northeast Texas.

.DAY ONE...This Afternoon and Tonight...

A Flash Flood Watch is in effect 7 PM CDT this Wednesday evening
until 7 PM CDT Thursday evening.

Strong to severe thunderstorms are possible tonight and into
Thursday. Large hail, damaging winds, and a tornado or two remain
possible. Locally heavy rainfall may lead to flash flooding,
especially where soils remain very wet from recent heavy rains in
southern Arkansas and northern Louisiana.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

A Flash Flood Watch is in effect 7 PM CDT this Wednesday evening
until 7 PM CDT Thursday evening.

Strong to severe thunderstorms will continue into Thursday. Large
hail, damaging winds, and a tornado or two remain possible. In
addition, locally heavy rainfall may lead to flash flooding,
especially where soils remain very wet from recent heavy rains in
southern Arkansas and northern Louisiana. The severe weather
threat should end from west to east during Thursday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight and into Thursday.

LAZ017>022-181700-
Sabine-Natchitoches-Winn-Grant-Caldwell-La Salle-
1156 AM CDT Wed Apr 17 2019

This Hazardous Weather Outlook is for portions of north central
Louisiana and northwest Louisiana.

.DAY ONE...This Afternoon and Tonight...

Strong to severe thunderstorms are possible late tonight and more
likely during the daytime hours of Thursday. Large hail, damaging
winds, and a tornado or two will be possible. Locally heavy
rainfall may lead to isolated flash flooding.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

Strong to severe thunderstorms are possible during the daytime
hours of Thursday. Large hail, damaging winds, and a tornado or
two remain possible. In addition, locally heavy rainfall may lead
to isolated flash flooding. The severe weather threat should end
from west to east by late Thursday afternoon or early Thursday
evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed by Thursday morning.

In the hours before

Special weather statement, Apr 18, 12:00 AM CDT, 3 hours 25 minutes before
Special Weather Statement
National Weather Service Shreveport LA
1200 AM CDT Thu Apr 18 2019

ARZ050-059-OKZ077-TXZ096-097-180545-
Sevier AR-Little River AR-McCurtain OK-Bowie TX-Red River TX-
1200 AM CDT Thu Apr 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN LITTLE RIVER...
NORTHWESTERN SEVIER...SOUTHEASTERN MCCURTAIN...NORTHWESTERN BOWIE AND
EAST CENTRAL RED RIVER COUNTIES UNTIL 1245 AM CDT...

At 1200 AM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northwest of Arkinda, or 14 miles northwest of Foreman, moving
northeast at 35 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
De Queen, Horatio, Idabel, Gillham, Haworth, Bokhoma, Eagletown,
Moon, Cerrogordo, Beaverdams, Goodlake, Harris, Geneva, Goodwater,
Shinewell, Tom, America, West Line, Bryarly and West Otis.

LAT...LON 3419 9447 3419 9417 3414 9409 3414 9410
      3413 9410 3413 9408 3357 9472 3372 9495
      3426 9447
TIME...MOT...LOC 0500Z 218DEG 32KT 3384 9460

12
Special weather statement, Apr 18, 12:48 AM CDT, 2 hours 37 minutes before
Special Weather Statement
National Weather Service Shreveport LA
1248 AM CDT Thu Apr 18 2019

ARZ061-180630-
Nevada AR-
1248 AM CDT Thu Apr 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN NEVADA COUNTY UNTIL
130 AM CDT...

At 1248 AM CDT, Doppler radar was tracking a strong thunderstorm
near Willisville, or 13 miles north of Waldo, moving northeast at 60
mph.

Penny size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Rosston, Willisville, Bodcaw, Bluff City, White Oak Lake State Park,
Cale, Mount Moriah, Young, Morris, Waterloo and Reader.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3382 9320 3380 9318 3382 9314 3379 9313
      3378 9311 3378 9310 3359 9311 3345 9329
      3354 9340
TIME...MOT...LOC 0547Z 222DEG 53KT 3355 9329

15
Special weather statement, Apr 18, 1:12 AM CDT, 2 hours 13 minutes before
Special Weather Statement
National Weather Service Shreveport LA
112 AM CDT Thu Apr 18 2019

ARZ061-072-180645-
Nevada AR-Columbia AR-
112 AM CDT Thu Apr 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN NEVADA AND
NORTHWESTERN COLUMBIA COUNTIES UNTIL 145 AM CDT...

At 112 AM CDT, Doppler radar was tracking a strong thunderstorm just
west of Waldo, moving northeast at 60 mph.

Penny to nickel size hail and winds in excess of 40 mph will be
possible with this storm.

Locations impacted include...
Waldo, Willisville, White Oak Lake State Park, Young, College Hill,
Lamartine and Waterloo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 900 AM CDT for
southwestern Arkansas.

LAT...LON 3342 9312 3330 9332 3335 9341 3344 9336
      3371 9311
TIME...MOT...LOC 0611Z 215DEG 50KT 3339 9331

15
Local storm report, Apr 18, 1:46 AM CDT, 1 hour 39 minutes before
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Special weather statement, Apr 18, 2:04 AM CDT, 1 hour 21 minutes before
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Special weather statement, Apr 18, 2:41 AM CDT, 44 minutes before
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The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 17, 10:49 PM CDTSpecial Weather StatementSHVRed River41 min
Apr 17, 11:19 PM CDTSevere Thunderstorm WarningSHVBowie, Red River41 min
Apr 18, 1:58 AM CDTLake Wind AdvisorySHVAngelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more17 hr
Apr 18, 2:37 AM CDTSevere Thunderstorm WarningSHVCherokee, Nacogdoches, Rusk, Smith53 min
Apr 18, 2:41 AM CDTSpecial Weather StatementSHVSmith64 min
Apr 18, 3:30 AM CDTSevere Thunderstorm WarningSHVCherokee, Harrison, Nacogdoches, Panola, Rusk, Shelby60 min
Apr 18, 3:35 AM CDTSpecial Weather StatementSHVGregg, Harrison, Upshur40 min
Apr 18, 4:23 AM CDTSevere Thunderstorm WarningSHVHarrison, Nacogdoches, Panola, Shelby67 min
Apr 18, 4:35 AM CDTSpecial Weather StatementSHVAngelina, San Augustine, Shelby40 min
Apr 18, 6:08 AM CDTSpecial Weather StatementSHVSabine52 min
Apr 18, 10:00 AM CDTRiver Flood WarningSHVAngelina, Houston, Polk, Trinity, Tyler49 days
Apr 18, 10:03 AM CDTRiver Flood WarningSHVFranklin, Morris, Red River, Titus70 hr
Apr 18, 10:04 AM CDTRiver Flood WarningSHVGregg, Smith, Upshur, Wood55 days
Apr 18, 10:06 AM CDTRiver Flood WarningSHVWood70 hr
Apr 18, 5:27 AM CDTSpecial Weather StatementSHVWebster48 min
Apr 18, 6:47 AM CDTSevere Thunderstorm WarningSHVDe Soto, Natchitoches, Red River, Sabine43 min
Apr 18, 7:28 AM CDTSevere Thunderstorm WarningSHVBienville, Jackson, Natchitoches, Red River, Winn29 min
Apr 18, 8:17 AM CDTTornado WarningSHVGrant, Natchitoches29 min
Apr 18, 8:46 AM CDTSevere Thunderstorm WarningSHVGrant, Natchitoches, Winn44 min
Apr 18, 9:28 AM CDTSevere Thunderstorm WarningSHVGrant, Natchitoches, Winn62 min
Apr 18, 10:19 AM CDTSevere Thunderstorm WarningSHVCaldwell, Jackson, Ouachita, Winn37 min
Apr 18, 4:46 PM CDTSpecial Weather StatementSHVBossier44 min
Apr 17, 10:54 PM CDTSpecial Weather StatementSHVSevier51 min
Apr 17, 11:03 PM CDTSevere Thunderstorm WarningSHVHoward, Sevier42 min
Apr 18, 12:00 AM CDTSpecial Weather StatementSHVSevier45 min
Apr 18, 12:48 AM CDTSpecial Weather StatementSHVNevada42 min
Apr 18, 1:06 AM CDTSevere Thunderstorm WarningSHVNevada24 min
Apr 18, 1:12 AM CDTSpecial Weather StatementSHVNevada33 min
Apr 18, 2:04 AM CDTSpecial Weather StatementSHVNevada41 min
Apr 18, 3:46 AM CDTSpecial Weather StatementSHVLafayette, Miller44 min
Apr 18, 4:28 AM CDTSpecial Weather StatementSHVColumbia, Lafayette, Nevada32 min
Apr 18, 4:46 AM CDTFlash Flood WarningSHVHempstead, Nevada3 hr
Apr 18, 5:19 AM CDTSpecial Weather StatementSHVUnion41 min

Nearby

Severe Thunderstorm Warnings in Texas, 2019Every severe thunderstorm warning in 2019

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.