Alert archive / Texas / Tornado Warnings in 2018
Tornado Warning 9, NWS Shreveport, LA
NWS Shreveport, LA issued this tornado warning at Jan 21, 2018, 10:54 PM CST for Sabine County, San Augustine County, Shelby County, Texas; Sabine Parish, Louisiana. It was in force for 33 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
- Jan 21, 2018, 10:54 PM CST (04:54 UTC)
- Expired
- Jan 21, 2018, 11:27 PM CST
- In force
- 33 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Sabine Parish, LA, Sabine County, TX, San Augustine County, TX, Shelby County, TX
The radar
The Ft Polk radar (KPOE), 102 km from the middle of the area, began a volume at 04:56 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 21, 9:59 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Shreveport, LA (KBAD), launched 00:00Z, 4.9 hours before the alert went out and 116 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
- 39 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 970 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 221 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
635
WFUS54 KSHV 220454
TORSHV
LAC085-TXC403-405-419-220545-
/O.NEW.KSHV.TO.W.0009.180122T0454Z-180122T0545Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
1054 PM CST SUN JAN 21 2018
The National Weather Service in Shreveport has issued a
* Tornado Warning for...
West central Sabine Parish in northwestern Louisiana...
Southeastern Shelby County in eastern Texas...
East central San Augustine County in eastern Texas...
Northwestern Sabine County in eastern Texas...
* Until 1145 PM CST
* At 1054 PM CST, a severe thunderstorm capable of producing a
tornado was located near Macune, or 22 miles north of Ebenezer,
moving northeast at 45 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Rosevine around 1105 PM CST.
Milam around 1120 PM CST.
Other locations impacted by this tornadic thunderstorm include
Sexton, Chinaquapin and Toledo Bend Reservoir North.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3129 9413 3138 9423 3174 9385 3158 9361
TIME...MOT...LOC 0454Z 228DEG 41KT 3136 9414
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
132 follow-up statements
087
WWUS54 KSHV 220505
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
1105 PM CST SUN JAN 21 2018
LAC085-TXC403-405-419-220545-
/O.CON.KSHV.TO.W.0009.000000T0000Z-180122T0545Z/
Sabine LA-Shelby TX-San Augustine TX-Sabine TX-
1105 PM CST SUN JAN 21 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 PM CST FOR WEST
CENTRAL SABINE PARISH...SOUTHEASTERN SHELBY...EAST CENTRAL SAN
AUGUSTINE AND NORTHWESTERN SABINE COUNTIES...
At 1105 PM CST, a severe thunderstorm capable of producing a tornado
was located near Rosevine, or 25 miles south of Center, moving
northeast at 45 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Rosevine around 1110 PM CST.
Milam around 1125 PM CST.
Other locations impacted by this tornadic thunderstorm include
Sexton, Chinaquapin and Toledo Bend Reservoir North.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 3138 9408 3144 9416 3174 9385 3158 9361
TIME...MOT...LOC 0505Z 225DEG 37KT 3143 9408
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
13028
WWUS54 KSHV 220527 RRA
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
1127 PM CST SUN JAN 21 2018
LAC085-TXC403-405-419-220536-
/O.CAN.KSHV.TO.W.0009.000000T0000Z-180122T0545Z/
Sabine LA-Shelby TX-San Augustine TX-Sabine TX-
1127 PM CST SUN JAN 21 2018
...THE TORNADO WARNING FOR WEST CENTRAL SABINE PARISH...SOUTHEASTERN
SHELBY...EAST CENTRAL SAN AUGUSTINE AND NORTHWESTERN SABINE COUNTIES
IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.
A tornado watch remains in effect until 400 AM CST for northwestern
Louisiana...and eastern Texas.
LAT...LON 3138 9408 3144 9416 3174 9385 3158 9361
TIME...MOT...LOC 0524Z 228DEG 41KT 3160 9386
$$
13The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 7:45 PM CST | Tornado Warning | SHV | Wood | 30 min |
| Jan 21, 8:06 PM CST | Severe Thunderstorm Warning | SHV | Red River | 24 min |
| Jan 21, 8:13 PM CST | Tornado Warning | SHV | Wood | 32 min |
| Jan 21, 8:24 PM CST | Tornado Warning | SHV | Franklin, Titus, Wood | 36 min |
| Jan 21, 8:47 PM CST | Tornado Warning | SHV | Franklin, Morris, Red River, Titus | 43 min |
| Jan 21, 9:17 PM CST | Tornado Warning | SHV | Bowie, Red River | 43 min |
| Jan 21, 9:44 PM CST | Tornado Warning | SHV | Bowie | 46 min |
| Jan 21, 9:56 PM CST | Special Weather Statement | SHV | Red River, Titus | 49 min |
| Jan 21, 10:00 PM CST | Special Weather Statement | SHV | Gregg | 30 min |
| Jan 21, 10:41 PM CST | Special Weather Statement | SHV | Bowie | 49 min |
| Jan 21, 10:43 PM CST | Severe Thunderstorm Warning | SHV | Sabine, San Augustine | 47 min |
| Jan 21, 11:09 PM CST | Tornado Warning | SHV | Cherokee, Rusk, Smith | 51 min |
| Jan 21, 11:44 PM CST | Tornado Warning | SHV | Gregg, Harrison, Panola, Rusk | 28 min |
| Jan 22, 3:25 AM CST | Lake Wind Advisory | SHV | Bowie, Camp, Cass, Cherokee, Franklin, Gregg and 12 more | 15 hr |
| Jan 22, 12:24 AM CST | Severe Thunderstorm Warning | SHV | De Soto, Natchitoches, Red River, Sabine | 66 min |
| Jan 22, 12:28 AM CST | Severe Thunderstorm Warning | SHV | De Soto, Natchitoches, Red River, Sabine | 47 min |
| Jan 22, 12:52 AM CST | Tornado Warning | SHV | Bienville, Jackson, Natchitoches, Red River | 40 min |
| Jan 22, 1:37 AM CST | Special Weather Statement | SHV | Bienville | 23 min |
| Jan 22, 2:21 AM CST | Severe Thunderstorm Warning | SHV | Lincoln, Ouachita, Union | 24 min |
| Jan 22, 2:55 AM CST | Tornado Warning | SHV | Grant, Natchitoches | 35 min |
| Jan 22, 4:12 AM CST | Special Weather Statement | SHV | LaSalle | 48 min |
Nearby
Tornado Warnings in Texas, 2018Tornado Warnings in Louisiana, 2018Every tornado warning in 2018Tornadoes in 2018
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.