Alert archive / Texas / Special Weather Statements in 2021
Special Weather Statement, NWS Shreveport, LA
NWS Shreveport, LA issued this special weather statement at Oct 11, 2021, 2:43 AM CDT for Nacogdoches County, Panola County, Shelby County, Texas; Bossier Parish, Caddo Parish, Louisiana. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 11, 2021, 2:43 AM CDT (07:43 UTC)
- Expired
- Oct 11, 2021, 3:30 AM CDT
- In force
- 47 min
- Issued by
- NWS Shreveport, LA
- Hail
- 0.00 in
- Wind
- 50
Counties Bossier Parish, LA, Caddo Parish, LA, Nacogdoches County, TX, Panola County, TX, Shelby County, TX
The radar
The Shreveport radar (KSHV), 67 km from the middle of the area, began a volume at 07:46 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 (KSHV), launched 00:00Z, 7.7 hours before the alert went out and 75 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.
- Mixed-layer CAPE
- 193 J/kg
- Mixed-layer CIN
- -245 J/kg
- Mixed-layer LCL
- 1467 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Oct 11, 1:54 AM CDT, 49 minutes earlier.
Area forecast discussion, Oct 11, 1:54 AM CDT, 49 minutes before
Area Forecast Discussion National Weather Service Shreveport LA 154 AM CDT Mon Oct 11 2021 .SHORT TERM.../Today through Tuesday/ A line of storms along a cool front, currently located from near DeQueen Arkansas southwestward to near Jacksonville TX, will continue to push eastward across the region overnight through about mid morning today. These storms remain strong at the current hour, but expect gradual weakening in intensity as the line progresses eastward. The primary threat remains damaging winds, but can't rule out an isolated tornado, especially across East Texas and SW Arkansas. Current short-term progs has this activity greatly diminishing as it moves into Louisiana and South-Central Arkansas, with dry conditions across most the area by noon as the front continues to push eastward. The exception would be across Grant and LaSalle parishes, as the front won't get through those areas until the early afternoon hours. However, it appears that any convection in those areas would be very isolated. Behind the front, look for clearing skies and winds becoming southwesterly to northwesterly around 10 mph. Temps on today will also be much cooler in most locations, with highs ranging from the upper 70s north of Interstate 30 to the mid 80s across Deep East Texas/Central Louisiana. Dry conditions to continue overnight into Tuesday morning, with cooler conditions moving into the region. Overnight lows will range from the mid 50s north of Interstate 30 to upper 60s across Deep East/Central Louisiana. However, the front looks to return northward as a warm front on Tuesday, with rain chances returning areawide by the afternoon. Should also see a return in southerly winds along with warm and humid conditions, as the warm front lifts through the region. /20/ .LONG TERM.../Wednesday Night through Sunday/ Southwesterly flow aloft will be the main influence of our weather conditions for the first half of the long-term period before zonal flow returns in the latter half early next week. As a robust upper- level low exits the Rocky Mountains, upper-level ridging will hold its position over Mexico and the Western Gulf of Mexico, with the Ark-La-Tex region sitting in the flow between the air masses. This southwesterly flow becomes more consequential through Wednesday and Thursday as newly-developed Tropical Storm Pamela off of the southern coast of Mexico is expected to develop into a hurricane before turning northeast. In the process of intensifying and making landfall in Mexico, it will inject Pacific moisture across Texas into our area ahead of frontal passage by the end of the week, delivering the best chances for precipitation in the long term period on Wednesday through Friday. After frontal passage by the end of the week, pleasant conditions return to the Ark-La-Tex with dew points in the 40s, and cooler than average temperatures with highs in the mid-70s and lows in the low 50s (with 40s likely in northern zones). Until then, above average temperatures will persist with highs in the mid-to-upper 80s and lows in the low 70s. Southerly surface flow will maintain Gulf moisture for convection ahead of the frontal boundary, with dew points likely in the upper 60s keeping conditions muggy for any outdoor activities during this week. /16/ && .PREV DISCUSSION... /issued 1251 AM CDT Mon Oct 11 2021/ AVIATION... A mix bag of conditions during the TAF period. Expect reduced flight categories as a line of storms will continue to move through the area along a cool front. Behind the front, expect a return in VFR conditions. Winds after fropa will become wly with speeds around 10-12 kts. /20/ && .PRELIMINARY POINT TEMPS/POPS... SHV 84 64 86 71 / 30 10 40 10 MLU 87 65 87 69 / 50 20 40 0 DEQ 80 55 81 68 / 10 0 40 30 TXK 81 59 85 71 / 10 0 40 20 ELD 81 58 82 67 / 40 0 30 10 TYR 82 63 86 72 / 0 10 40 10 GGG 82 61 86 69 / 10 10 30 10 LFK 86 67 89 71 / 10 10 30 10 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...None. LA...None. OK...None. TX...None. && 20/16
Hazardous weather outlook, Oct 10, 5:15 AM CDT, 21 hours 28 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 515 AM CDT Sun Oct 10 2021 ARZ050-051-059-060-070-OKZ077-TXZ096-097-108>112-124>126-136>138- 149-150-111015- Sevier-Howard-Little River-Hempstead-Miller-McCurtain-Red River- Bowie-Franklin-Titus-Camp-Morris-Cass-Wood-Upshur-Marion-Smith- Gregg-Harrison-Cherokee-Rusk- 515 AM CDT Sun Oct 10 2021 This Hazardous Weather Outlook is for portions of southwest Arkansas, southeast Oklahoma and northeast Texas. .DAY ONE...Today and Tonight... Gusty southerly winds have prompted a Lake Wind Advisory across the area with hazardous boating conditions on waterways expected for any marine activity today and through tonight. Showers and thunderstorms will increase from the west and northwest as early as this evening across the region along and ahead of an approaching cold front. Strong to severe thunderstorms will be possible through tonight with the most severe thunderstorms capable of producing strong and damaging wind gusts, large hail and possibly an isolated tornado. .DAYS TWO THROUGH SEVEN...Monday through Saturday... Showers and thunderstorms will weaken below severe criterion by the early morning hours on Monday. After the frontal boundary clears the area, Pacific moisture will return from the southwest, maintaining an environment conducive for additional showers and thunderstorms especially from the middle of the week to the end of the week. Flash flooding in isolated areas remains possible, however, no additional hazards are expected. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters will be necessary in this area through tonight. ARZ061-072-073-LAZ003>006-011>014-017>022-TXZ166-167-111015- Nevada-Columbia-Union-Webster-Claiborne-Lincoln-Red River- Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-Grant- Caldwell-La Salle-San Augustine- 515 AM CDT Sun Oct 10 2021 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana and east Texas. .DAY ONE...Today and Tonight... Showers and thunderstorms will increase from the west and northwest this evening and through tonight across the region along and ahead of an approaching cold front. While strong thunderstorms cannot be ruled out across portions of the region, severe thunderstorms should remain just north and west of the I-30 corridor. .DAYS TWO THROUGH SEVEN...Monday through Saturday... Pacific moisture will return from the southwest after the frontal passage on Monday, maintaining an environment conducive for additional showers and thunderstorms, especially from the middle of the week to the end of the week. Flash flooding in isolated areas remains possible, however, no additional hazards are expected. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters will not be needed through tonight. ARZ071-LAZ001-002-010-TXZ151>153-165-111015- Lafayette-Caddo-Bossier-De Soto-Panola-Nacogdoches-Shelby- Angelina- 515 AM CDT Sun Oct 10 2021 This Hazardous Weather Outlook is for portions of southwest Arkansas, northwest Louisiana, east Texas and northeast Texas. .DAY ONE...Today and Tonight... Gusty southerly winds have prompted a Lake Wind Advisory across the area with hazardous boating conditions on waterways expected for any marine activity today and through tonight. Showers and thunderstorms will increase from the west and northwest this evening and through tonight across the region along and ahead of an approaching cold front. While strong to severe thunderstorms cannot be ruled out across portions of the region, the most severe thunderstorms should remain just north and west of the I-30 corridor. .DAYS TWO THROUGH SEVEN...Monday through Saturday... Pacific moisture will return from the southwest after the frontal passage on Monday, maintaining an environment conducive for additional showers and thunderstorms, especially from the middle of the week to the end of the week. Flash flooding in isolated areas remains possible, however, no additional hazards are expected. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters will not be needed through tonight.
In the hours before
Special weather statement, Oct 11, 12:56 AM CDT, 1 hour 47 minutes before
Special Weather Statement
National Weather Service Shreveport LA
1256 AM CDT Mon Oct 11 2021
TXZ136-149-150-110645-
Cherokee TX-Smith TX-Rusk TX-
1256 AM CDT Mon Oct 11 2021
...Strong thunderstorms will impact portions of southeastern Smith,
southwestern Rusk and Cherokee Counties through 145 AM CDT...
At 1256 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Coffee City to 7 miles northeast of
Palestine to 15 miles east of Buffalo. Movement was east at 50 mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Jacksonville, Henderson, Rusk, Bullard, Troup, Alto, Mount Selman,
Ponta, Mixon, Turnertown, Reese, New Salem, Maydelle, New
Summerfield, Gallatin, Reklaw, Cuney, Concord and Brachfield.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
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.
A Tornado Watch remains in effect until 400 AM CDT for eastern and
northeastern Texas.
&&
LAT...LON 3199 9545 3201 9543 3207 9544 3219 9539
3219 9469 3184 9491 3179 9498 3178 9496
3154 9513 3159 9517 3158 9526 3168 9529
3172 9534 3174 9533 3173 9537 3175 9536
3176 9540 3182 9540 3185 9544 3193 9542
TIME...MOT...LOC 0556Z 261DEG 45KT 3213 9540 3181 9553 3147 9580
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
44Local storm report, Oct 11, 1:29 AM CDT, 1 hour 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
129 AM CDT MON OCT 11 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1220 AM TSTM WND DMG 3 WNW BROKEN BOW 34.05N 94.79W
10/11/2021 MCCURTAIN OK EMERGENCY MNGR
TREES DOWN ON VEHICLE 3 MILES WEST OF BROKEN
BOW ON HWY 3.
&&
SPSpecial weather statement, Oct 11, 1:31 AM CDT, 1 hour 12 minutes before
Special Weather Statement
National Weather Service Shreveport LA
131 AM CDT Mon Oct 11 2021
TXZ125-126-137-138-149>151-110715-
Upshur TX-Gregg TX-Cherokee TX-Panola TX-Harrison TX-Marion TX-
Rusk TX-
131 AM CDT Mon Oct 11 2021
...Strong thunderstorms will impact portions of central Marion,
Harrison, western Panola, Rusk, southeastern Upshur, Gregg and
northeastern Cherokee Counties through 215 AM CDT...
At 131 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near West Mountain to near Kilgore to near
Ponta. Movement was east at 35 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...
Longview, Marshall, Henderson, Kilgore, Carthage, White Oak,
Gladewater, Hallsville, Overton, Jefferson, Tatum, New London,
Clarksville City, Beckville, East Mountain, Pinehill, New Salem,
Berea, Harleton and Diana.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
A Tornado Watch remains in effect until 400 AM CDT for eastern and
northeastern Texas.
&&
LAT...LON 3214 9503 3214 9499 3227 9499 3271 9488
3288 9417 3248 9426 3197 9443 3197 9451
3194 9451 3190 9511
TIME...MOT...LOC 0631Z 258DEG 32KT 3265 9488 3237 9494 3198 9506
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
44Special weather statement, Oct 11, 2:11 AM CDT, 32 minutes before
Special Weather Statement
National Weather Service Shreveport LA
211 AM CDT Mon Oct 11 2021
TXZ138-150>153-110745-
Panola TX-Harrison TX-Nacogdoches TX-Rusk TX-Shelby TX-
211 AM CDT Mon Oct 11 2021
...Strong thunderstorms will impact portions of southeastern
Harrison, Panola, southeastern Rusk, northern Nacogdoches and
northwestern Shelby Counties through 245 AM CDT...
At 209 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles west of Beckville to near Pinehill to
near Douglass. Movement was east at 40 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Carthage, Tenaha, Timpson, Garrison, Beckville, Deberry, Elysian
Fields, Pinehill, Douglass, Trawick, Appleby, Mount Enterprise, Gary
City, Chapman, Front, Stockman, Lawsonville, Fairplay, Midyett and
Deadwood.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Tornado Watch remains in effect until 400 AM CDT for northwestern
Louisiana...and eastern and northeastern Texas.
&&
LAT...LON 3203 9465 3227 9461 3245 9404 3234 9404
3215 9408 3171 9442 3165 9495
TIME...MOT...LOC 0709Z 255DEG 36KT 3221 9456 3205 9459 3173 9484
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
16Special weather statement, Oct 11, 2:43 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service Shreveport LA
243 AM CDT Mon Oct 11 2021
LAZ001-002-010-TXZ138-151>153-110830-
De Soto LA-Bossier LA-Caddo LA-Panola TX-Harrison TX-Nacogdoches TX-
Shelby TX-
243 AM CDT Mon Oct 11 2021
...Strong thunderstorms will impact portions of western De Soto,
southwestern Caddo and southwestern Bossier Parishes, southeastern
Harrison, eastern Panola, northeastern Nacogdoches and Shelby
Counties through 330 AM CDT...
At 241 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Elysian Fields to 6 miles east of Carthage
to Timpson to near Nacogdoches. Movement was northeast at 45 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Shreveport, Bossier City, Nacogdoches, Carthage, Center, Greenwood,
Blanchard, Waskom, Benton, Stonewall, Logansport, Tenaha, Timpson,
Garrison, Joaquin, Deberry, Elysian Fields, Fosters, Shelbyville and
Appleby.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Tornado Watch remains in effect until 400 AM CDT for northwestern
Louisiana...and eastern and northeastern Texas.
&&
LAT...LON 3157 9477 3184 9454 3185 9445 3191 9449
3213 9432 3240 9433 3274 9361 3240 9359
3215 9379 3171 9406 3166 9440 3164 9440
TIME...MOT...LOC 0741Z 245DEG 37KT 3236 9423 3217 9423 3192 9442 3167
9464
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
16The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 10, 11:24 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Franklin, Morris, Red River, Titus | 66 min |
| Oct 10, 11:35 PM CDT | Severe Thunderstorm Warning | SHV | Camp, Franklin, Smith, Titus, Upshur, Wood | 55 min |
| Oct 11, 12:26 AM CDT | Severe Thunderstorm Warning | SHV | Bowie, Cass, Morris, Red River, Titus | 64 min |
| Oct 11, 12:33 AM CDT | Severe Thunderstorm Warning | SHV | Camp, Cass, Franklin, Gregg, Harrison, Marion and 6 more | 57 min |
| Oct 11, 12:56 AM CDT | Special Weather Statement | SHV | Cherokee, Rusk | 49 min |
| Oct 11, 1:31 AM CDT | Special Weather Statement | SHV | Gregg, Harrison, Marion, Rusk | 44 min |
| Oct 11, 1:35 AM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Rusk, Smith | 25 min |
| Oct 11, 2:11 AM CDT | Special Weather Statement | SHV | Panola | 34 min |
| Oct 11, 4:04 AM CDT | Special Weather Statement | SHV | Sabine, San Augustine | 41 min |
| Oct 11, 4:46 AM CDT | Special Weather Statement | SHV | Sabine | 44 min |
| Oct 11, 1:03 AM CDT | Severe Thunderstorm Warning | SHV | Howard | 27 min |
| Oct 11, 1:29 AM CDT | Severe Thunderstorm Warning | SHV | Howard, Sevier | 31 min |
| Oct 10, 11:50 PM CDT | Tornado Warning | SHV | McCurtain | 40 min |
Nearby
Special Weather Statements in Texas, 2021Special Weather Statements in Louisiana, 2021Every special weather statement in 2021
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.