Alert archive / Louisiana / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 137, NWS Shreveport, LA

April 18, 2019Grant Parish, Natchitoches Parish, Winn Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 18, 2019, 9:28 AM CDT for Grant Parish, Natchitoches Parish, Winn Parish, Louisiana. It was in force for 62 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, 9:28 AM CDT (14:28 UTC)
Expired: Apr 18, 2019, 10:30 AM CDT
In force: 62 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Grant Parish, LA, Natchitoches Parish, LA, Winn Parish, LA

The radar

The Ft Polk radar (KPOE), 70 km from the middle of the area, began a volume at 14:27 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 nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 2.5 hours before the alert went out and 123 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 645 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -199 m²/s²
0-3 km storm-relative helicity: -108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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, 8:49 AM CDT, 39 minutes earlier.

Area forecast discussion, Apr 18, 8:49 AM CDT, 39 minutes before

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Hazardous weather outlook, Apr 18, 6:03 AM CDT, 3 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service Shreveport LA
603 AM CDT Thu Apr 18 2019

ARZ050-051-059-060-070-OKZ077-TXZ096-097-108>112-124-125-136-149-
165-191115-
Sevier-Howard-Little River-Hempstead-Miller-McCurtain-Red River-
Bowie-Franklin-Titus-Camp-Morris-Cass-Wood-Upshur-Smith-Cherokee-
Angelina-
603 AM CDT Thu Apr 18 2019

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

.DAY ONE...Today and Tonight...

Heavy rain with embedded thunderstorms will move through the area
this morning as low pressure and its associated cold front move
across the area.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

The possibility of thunderstorms will return Monday into the mid-
week as the next upper level disturbance approaches from the
northwest.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ARZ061-071-072-LAZ001>003-010-017-TXZ126-137-138-150>153-166-167-
191115-
Nevada-Lafayette-Columbia-Caddo-Bossier-Webster-De Soto-Sabine-
Marion-Gregg-Harrison-Rusk-Panola-Nacogdoches-Shelby-
San Augustine-
603 AM CDT Thu Apr 18 2019

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

.DAY ONE...Today and Tonight...

Strong thunderstorms will move through the area this morning as
low pressure and its associated cold front move across the area.
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...Friday through Wednesday...

The possibility of thunderstorms will return Monday into the mid-
week as the next upper level disturbance approaches from the
northwest.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will no longer be needed after the mid-morning
hours today.

ARZ073-LAZ004>006-011>014-018>022-191115-
Union-Claiborne-Lincoln-Red River-Bienville-Jackson-Ouachita-
Natchitoches-Winn-Grant-Caldwell-La Salle-
603 AM CDT Thu Apr 18 2019

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

.DAY ONE...Today and Tonight...

Strong to severe thunderstorms will move through the area during
the mid to late morning hours as low pressure and its associated
cold front move across the area. The primary threat will be
damaging winds with thunderstorms, although large hail and an
isolated tornado cannot be ruled out. 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...Friday through Wednesday...

The possibility of thunderstorms will return Monday into the mid-
week as the next upper level disturbance approaches from the
northwest.

.SPOTTER INFORMATION STATEMENT...

Spotters will be needed until this afternoon.

04

In the hours before

Local storm report, Apr 18, 4:17 AM CDT, 5 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
417 AM CDT THU APR 18 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0341 AM     TSTM WND DMG     HENDERSON               32.15N 94.80W
04/18/2019                   RUSK               TX   LAW ENFORCEMENT

            TREES AND POWER LINES DOWN IN THE CITY OF
            HENDERSON.

&&

ABD

Special weather statement, Apr 18, 4:28 AM CDT, 5 hours before

Special Weather Statement
National Weather Service Shreveport LA
428 AM CDT Thu Apr 18 2019

ARZ060-061-070>073-181000-
Hempstead AR-Union AR-Lafayette AR-Miller AR-Nevada AR-Columbia AR-
428 AM CDT Thu Apr 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HEMPSTEAD...CENTRAL
MILLER...LAFAYETTE...NORTHWESTERN UNION...NEVADA AND COLUMBIA
COUNTIES UNTIL 500 AM CDT...

At 426 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Whelen Springs to near Bodcaw to near
Lewisville to near Bradley. Movement was east at 70 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Magnolia, Hope, Prescott, Smackover, Stamps, Waldo, Lewisville,
McNeil, Fouke, Emmet, Buckner, Perrytown, Rosston, Garland,
Willisville, Bodcaw, Bluff City, Smithland, Village and Lisbon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

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

These storms 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 3390 9330 3384 9329 3383 9323 3380 9318
      3382 9314 3378 9310 3338 9312 3337 9279
      3339 9276 3336 9268 3313 9279 3312 9403
      3344 9377 3372 9359 3394 9334
TIME...MOT...LOC 0926Z 257DEG 62KT 3388 9311 3361 9346 3341 9356 3315
9374

09

Special weather statement, Apr 18, 4:35 AM CDT, 4 hours 53 minutes before

Special Weather Statement
National Weather Service Shreveport LA
435 AM CDT Thu Apr 18 2019

TXZ152-153-165-166-181015-
Angelina TX-Nacogdoches TX-San Augustine TX-Shelby TX-
435 AM CDT Thu Apr 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN NACOGDOCHES...SOUTHERN
SHELBY...ANGELINA AND SAN AUGUSTINE COUNTIES UNTIL 515 AM CDT...

At 434 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles southeast of Timpson to near Woden to 8
miles north of Chester. Movement was northeast at 35 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Lufkin, Center, Huntington, San Augustine, Melrose, Patroon,
Martinsville, Bland Lake, Neuville, Woden, Macune, Etoile,
Shelbyville, Zavalla, Chireno, Huxley, Broaddus, Jericho, Chinaquapin
and Hurstown.

A Severe Thunderstorm Watch remains in effect until 900 AM CDT for
northwestern Louisiana...and eastern Texas.

LAT...LON 3110 9465 3109 9467 3112 9477 3146 9471
      3176 9444 3187 9389 3158 9395 3157 9398
      3146 9399 3141 9404 3136 9402 3134 9404
      3127 9404 3111 9408 3103 9447
TIME...MOT...LOC 0934Z 244DEG 30KT 3181 9432 3145 9453 3104 9461

09

Special weather statement, Apr 18, 5:19 AM CDT, 4 hours 9 minutes before

Special Weather Statement
National Weather Service Shreveport LA
519 AM CDT Thu Apr 18 2019

ARZ072-073-LAZ004-006-181100-
Union AR-Columbia AR-Union LA-Claiborne LA-
519 AM CDT Thu Apr 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN UNION AND
SOUTHEASTERN COLUMBIA COUNTIES...NORTHWESTERN UNION AND NORTHEASTERN
CLAIBORNE PARISHES UNTIL 600 AM CDT...

At 519 AM CDT, Doppler radar was tracking a strong thunderstorm near
Atlanta, or 15 miles southeast of Magnolia, moving east at 55 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
El Dorado, Junction City, Haynesville, Strong, Urbana, Lawson,
Atlanta, Wesson, Spearsville, Lillie, Hew Hope, Newell, New London,
Aurelle, Oakland, Taylorville, Cairo, Hillsboro, Noxobe and Three
Creeks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

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

LAT...LON 3298 9316 3321 9313 3326 9231 3285 9229
TIME...MOT...LOC 1019Z 267DEG 49KT 3311 9304

09

Special weather statement, Apr 18, 5:27 AM CDT, 4 hours 1 minute before

Special Weather Statement
National Weather Service Shreveport LA
527 AM CDT Thu Apr 18 2019

LAZ001>003-012-181115-
Bossier LA-Bienville LA-Caddo LA-Webster LA-
527 AM CDT Thu Apr 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WEBSTER...SOUTHEASTERN
CADDO...WEST CENTRAL BIENVILLE AND SOUTHERN BOSSIER PARISHES UNTIL
615 AM CDT...

At 526 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northwest of Fosters to near Shreveport
to 6 miles north of Stonewall. Movement was east at 30 mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Shreveport, Bossier City, Minden, Haughton, Sibley, Doyline,
Dubberly, Dixie Inn, Heflin, Eastwood, Fosters, Ferguson, Curtis,
Fillmore, Bodcau, Plum Orchard Landing, Koran, Gilark, Noles Landing
and Lake Bistineau North.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms 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.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Shreveport.

&&

LAT...LON 3253 9321 3234 9336 3231 9366 3232 9369
      3233 9370 3232 9371 3235 9377 3233 9384
      3238 9382 3249 9380 3259 9382 3275 9329
      3262 9322
TIME...MOT...LOC 1026Z 252DEG 25KT 3259 9376 3248 9374 3241 9374 3235
9379

09

Special weather statement, Apr 18, 6:08 AM CDT, 3 hours 20 minutes before

Special Weather Statement
National Weather Service Shreveport LA
608 AM CDT Thu Apr 18 2019

LAZ010-017-TXZ153-166-167-181200-
De Soto LA-Sabine LA-Sabine TX-San Augustine TX-Shelby TX-
608 AM CDT Thu Apr 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DE SOTO AND SABINE
PARISHES...SOUTHEASTERN SHELBY...EASTERN SAN AUGUSTINE AND SABINE
COUNTIES UNTIL 700 AM CDT...

At 608 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near San Augustine to near Rosevine to near
Pineland to Browndell. Movement was northeast at 35 mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Milam, Many, San Augustine, Zwolle, Hemphill, Pineland, Converse,
Patroon, Rosevine, Oak Grove, Pleasant Hill, Florien, Huxley, Noble,
Fisher, Belmont, Bronson, Pelican, McElroy and Yellowpine.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

These storms 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 3123 9405 3139 9407 3157 9413 3191 9358
      3166 9341 3152 9339 3128 9347 3128 9353
      3125 9354 3124 9356 3123 9354 3119 9355
      3117 9359 3118 9360 3118 9363 3116 9391
      3114 9404 3112 9405
TIME...MOT...LOC 1108Z 241DEG 30KT 3154 9404 3142 9396 3128 9393 3110
9399

09

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 10:49 PM CDT	Special Weather Statement	SHV	Red River	41 min
Apr 17, 11:19 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River	41 min
Apr 18, 1:58 AM CDT	Lake Wind Advisory	SHV	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more	17 hr
Apr 18, 2:37 AM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches, Rusk, Smith	53 min
Apr 18, 2:41 AM CDT	Special Weather Statement	SHV	Smith	64 min
Apr 18, 3:25 AM CDT	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches	65 min
Apr 18, 3:30 AM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Harrison, Nacogdoches, Panola, Rusk, Shelby	60 min
Apr 18, 3:35 AM CDT	Special Weather Statement	SHV	Gregg, Harrison, Upshur	40 min
Apr 18, 4:23 AM CDT	Severe Thunderstorm Warning	SHV	Harrison, Nacogdoches, Panola, Shelby	67 min
Apr 18, 4:35 AM CDT	Special Weather Statement	SHV	Angelina, San Augustine, Shelby	40 min
Apr 18, 6:08 AM CDT	Special Weather Statement	SHV	Sabine	52 min
Apr 18, 10:00 AM CDT	River Flood Warning	SHV	Angelina, Houston, Polk, Trinity, Tyler	49 days
Apr 18, 10:03 AM CDT	River Flood Warning	SHV	Franklin, Morris, Red River, Titus	70 hr
Apr 18, 10:04 AM CDT	River Flood Warning	SHV	Gregg, Smith, Upshur, Wood	55 days
Apr 18, 10:06 AM CDT	River Flood Warning	SHV	Wood	70 hr
Apr 18, 5:27 AM CDT	Special Weather Statement	SHV	Webster	48 min
Apr 18, 6:47 AM CDT	Severe Thunderstorm Warning	SHV	De Soto, Natchitoches, Red River, Sabine	43 min
Apr 18, 7:28 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Jackson, Natchitoches, Red River, Winn	29 min
Apr 18, 8:17 AM CDT	Tornado Warning	SHV	Grant, Natchitoches	29 min
Apr 18, 8:46 AM CDT	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Winn	44 min
Apr 18, 10:19 AM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Jackson, Ouachita, Winn	37 min
Apr 18, 4:46 PM CDT	Special Weather Statement	SHV	Bossier	44 min
Apr 17, 10:54 PM CDT	Special Weather Statement	SHV	Sevier	51 min
Apr 17, 11:03 PM CDT	Severe Thunderstorm Warning	SHV	Howard, Sevier	42 min
Apr 18, 12:00 AM CDT	Special Weather Statement	SHV	Sevier	45 min
Apr 18, 12:48 AM CDT	Special Weather Statement	SHV	Nevada	42 min
Apr 18, 1:06 AM CDT	Severe Thunderstorm Warning	SHV	Nevada	24 min
Apr 18, 1:12 AM CDT	Special Weather Statement	SHV	Nevada	33 min
Apr 18, 2:04 AM CDT	Special Weather Statement	SHV	Nevada	41 min
Apr 18, 3:46 AM CDT	Special Weather Statement	SHV	Lafayette, Miller	44 min
Apr 18, 4:28 AM CDT	Special Weather Statement	SHV	Columbia, Lafayette, Nevada	32 min
Apr 18, 4:46 AM CDT	Flash Flood Warning	SHV	Hempstead, Nevada	3 hr
Apr 18, 5:19 AM CDT	Special Weather Statement	SHV	Union	41 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2019 Every 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.