A very potent upper level trough entered the Southern Plains late on October 26th and ejected eastward into the Four-State Region on October 27th, accompanied by a strong cold front. A line of severe thunderstorms developed ahead of the cold front as the upper trough pivoted directly across the area.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS SHV wrote it up.
A very potent upper level trough entered the Southern Plains late on October 26th and ejected eastward into the Four-State Region on October 27th, accompanied by a strong cold front. A line of severe thunderstorms developed ahead of the cold front as the upper trough pivoted directly across the area. These storms resulted in numerous wind damage reports across parts of East and Deep East Texas throughout the morning hours before the line pushed east of the state line into western Louisiana by around midday.
The local office's own words before the first event, 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 the first event at Oct 27, 5:08 AM CST, 3 hours 7 minutes earlier.
Area Forecast Discussion National Weather Service Shreveport LA 608 AM CDT Wed Oct 27 2021 .AVIATION... Patchy MVFR cigs to continue ahead of a cold front and associated tstms presently ongoing across N TX and ern OK. Line of storms to move into the area right at the start of the pd, continuing ewd across our region through 00Z Thursday, with some very strong winds and low flight categories possible invof convection. Although more uncertain, a secondary line of storms may develop shortly behind the first, which would primarily impact our S AR terminals. Improvement to VFR conditions will begin from w to e around 18Z and conclude prior to 06Z tonight. Otherwise, gusty sely winds ahead of the front will become wly to nwly after fropa. /12/ && .PREV DISCUSSION... /issued 325 AM CDT Wed Oct 27 2021/ SHORT TERM.../Today through Thursday/ Potent longwave trof movg into the Plains this morning already fueling a line of strong to severe storms roughly along the I-35 corridor of OK/TX. This line of storms, according to the latest model guidance, will arrive at our wrn edge right around sunrise. Very strong deep-layer and low-level wind shear will intersect with a moist and at least moderately unstable airmass present across the srn half of the region. As such, see no reason why this line of storms won't continue its ewd march with the threat for wind damage and isold tornadoes firmly taking shape during daytime heating along the associated dryline/Pacific front. Shortly on the heels of the dryline/Pac front, the main cold push along a secondary push of energy around the base of the upper low will tap into lingering weak instability across the nrn half of the region, resulting in perhaps another line of convection later this morning. There does appear to be a non-zero threat for these storms to also reach severe limits, with damaging winds/isold tornadoes the primary concerns. Convection should be e of the region by the middle part of the evening. Some additional shwrs in wrap-around moisture along the swrn flank of the upper low will be possible, mainly n of I-20 through the overnight and morning hours of Thursday. However, the bigger story for Thursday will be the gradient winds. Latest model guidance pins portions of our region with sustained winds in the 25-30 mph range with gusts of around 40 mph. Fully expect wind headlines to be needed, but will defer those to later shifts to decide exactly what headline will be needed and to allow for the severe threat to remain the primary story for this cycle. Strong CAA will bring below normal max temps in the 60s at most sites for Thursday. /12/ LONG TERM.../Thursday Night through Tuesday Night/ A very active weather pattern in the short-term will transition into much quieter weather for this long-term forecast period. Behind the front, the region will remain under NW flow for some time, allowing for both afternoon highs and overnight lows to remain well below average. However, look for the 500mb flow to finally take a more zonal shift to start the next workweek. This will allow for temperatures to begin warming, albeit only back up to a seasonal feel. The most notable item in the long term will be the winds through Saturday. The pressure gradient behind the front will remain incredibly tight for some time, allowing for very strong winds across the region. Wind headlines will likely be needed into the weekend, with the extended of the headlines to follow in subsequent forecasts. /44/ && .PRELIMINARY POINT TEMPS/POPS... SHV 78 56 67 52 / 100 10 10 0 MLU 78 55 65 52 / 100 40 20 10 DEQ 73 51 62 47 / 100 30 30 0 TXK 75 55 64 51 / 100 20 20 0 ELD 73 52 61 48 / 100 40 20 10 TYR 78 56 70 51 / 100 20 0 0 GGG 78 54 69 50 / 100 10 0 0 LFK 80 55 74 51 / 100 0 0 0 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...None. LA...None. OK...None. TX...None. && 12/44
Hazardous Weather Outlook National Weather Service Shreveport LA 356 AM CDT Wed Oct 27 2021 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-280900- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn- Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp- Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk- Panola-Nacogdoches-Shelby-Angelina-San Augustine- 356 AM CDT Wed Oct 27 2021 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, southeast Oklahoma, east Texas and northeast Texas. .DAY ONE...Today and Tonight... Strong to severe thunderstorms will be possible areawide today, as a strong cold front moves east across the region. The threat looks to begin as early as daybreak in our western zones of east Texas, with the greatest chance of severe weather along and south of the I-20 corridor. The primary threats associated with this line look to be damaging winds, and an isolated tornado or two cannot be ruled out. After the threat diminishes Wednesday evening as the cold front departs to the east, gusty west/northwest winds can be expected overnight and into the day Thursday, with some gusts reaching as high as 40 mph. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... Strong gusty winds will remain possible under a tight pressure gradient through Saturday. Wind headlines will likely be issued in the wake of the severe weather today. At times, winds my be sustained over 20mph, with gusts over 40mph possible. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel, amateur radio operators and storm spotters may be needed throughout the day Wednesday. 44
Special Weather Statement
National Weather Service Shreveport LA
719 AM CDT Wed Oct 27 2021
TXZ124-136-149-271245-
Cherokee TX-Smith TX-Wood TX-
719 AM CDT Wed Oct 27 2021
...Strong thunderstorms will impact portions of Smith, Wood and
northwestern Cherokee Counties through 745 AM CDT...
At 717 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Golden to near Brownsboro to 7 miles north
of Palestine to 12 miles southwest of Elkhart. Movement was east at
20 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Tyler, Jacksonville, Whitehouse, Mineola, Winnsboro, Lindale,
Bullard, Quitman, Hawkins, Berryville, Pleasant Grove, Hainesville,
Golden, Mount Selman, Hoard, Mixon, Reese, Maydelle, Forest Hill and
Noonday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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.
If on or near a lake, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.
&&
LAT...LON 3296 9516 3230 9515 3181 9521 3163 9528
3168 9529 3176 9540 3182 9540 3185 9544
3193 9542 3199 9545 3205 9542 3215 9548
3218 9546 3223 9549 3230 9545 3236 9545
3248 9559 3269 9559 3272 9564 3296 9567
TIME...MOT...LOC 1217Z 277DEG 17KT 3265 9559 3233 9558 3186 9563 3153
9575
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
19Special Weather Statement
National Weather Service Shreveport LA
838 AM CDT Wed Oct 27 2021
TXZ149-152-165-166-271430-
Cherokee TX-Angelina TX-Nacogdoches TX-San Augustine TX-
838 AM CDT Wed Oct 27 2021
...Strong thunderstorms will impact portions of central Nacogdoches,
Angelina, southwestern San Augustine and southeastern Cherokee
Counties through 930 AM CDT...
At 837 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles west of Morrill to near Hudson to near
Chester. Movement was east at 30 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Lufkin, Nacogdoches, Diboll, Hudson, Huntington, Alto, Wells,
Morrill, Melrose, Woden, Pollok, Etoile, Forest, Douglass, Burke,
Zavalla, Broaddus, Shawnee, Clawson and Central.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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.
If on or near a lake, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.
A Tornado Watch remains in effect until 400 PM CDT for Deep East
Texas.
&&
LAT...LON 3110 9465 3109 9467 3113 9482 3115 9485
3132 9490 3134 9496 3138 9495 3144 9500
3147 9510 3152 9510 3159 9517 3158 9526
3164 9528 3170 9461 3131 9414 3111 9407
3103 9447
TIME...MOT...LOC 1337Z 271DEG 26KT 3162 9519 3133 9484 3093 9470
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
16The Shreveport radar (KSHV), 96 km away, was scanning. The volume nearest the first event began at 14:15 UTC.
4 thunderstorm wind. Local standard time, as filed.
Tree down on County Road 3397, FM 782 near County Road 2186, FM 225 2 miles north of Hwy 284, FM 2496 near County Road 3161 and State Hwy 42 northwest of Hwy 795.
A NWS Storm Survey determined that straight-line winds with estimated wind gusts up to 80 mph produced various wind damage in Downtown Lufkin. Sporadic damage was first observed near the Lufkin Police Station on East Shepherd Ave. where a small tree was toppled. As the wind pushed across South 4th Street, small and large branches were broken off of hardwood trees. A billboard on East Lufkin Ave. was destroyed and a few branches on trees were broken along K. Morgan Ave.
Surveillance footage and emergency officials observed a narrow circulation at the ground which was determined to be a turbulent eddy that developed as the damaging winds came to the surface. The damage was determined to be non-tornadic as there was no evidence of vertical motion with the damage pattern oriented in a northeasterly direction. In addition, there was no evident funnel cloud from the footage shared that would indicate the circulation was vertically attached to rotation from the parent storm.
Tree reported down on County Road 175.
Tree reported down in the northwest part of the county near State Hwy 43.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2021Every state in 2021This day in weather historyWarnings in Texas, October 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 983837, 983838, 983839, 983841.