Alert archive / Texas / Tornado Warnings in 2017
Tornado Warning 2, NWS Shreveport, LA
NWS Shreveport, LA issued this tornado warning at Jan 21, 2017, 4:44 PM CST for Bossier Parish, Caddo Parish, Louisiana; Miller County, Arkansas; Cass County, Harrison County, Marion County, Texas. It was in force for 61 min. 8 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jan 21, 2017, 4:44 PM CST (22:44 UTC)
- Expired
- Jan 21, 2017, 5:45 PM CST
- In force
- 61 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Miller County, AR, Bossier Parish, LA, Caddo Parish, LA, Cass County, TX, Harrison County, TX, Marion County, TX
The radar
The Shreveport radar (KSHV), 41 km from the middle of the area, began a volume at 22:47 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 21, 4:50 PM CST | HAIL 1.25 | 6 Nne Uncertain, TX | VIDEO OF LARGE HAIL IN THE GRAY COMMUNITY VIA KSLA FACEBOOK. |
| Jan 21, 4:50 PM CST | TORNADO | 13 Ene Jefferson, TX | AN EF2 TORNADO TOUCHED DOWN NEAR SMITHVILLE... TEXAS UPROOTING NUMEROUS TREES AND DOWNING POWERLINES. SEVERAL VEHICLES WERE MOVED AND A PARTY BARGE WAS DUMPED 200 YARDS INTO A GROVE OF TREES. TREES WERE DOWNED ON SEVERAL HOMES AND A TRAVEL TRAILER WAS FLIPPED. |
| Jan 21, 4:55 PM CST | HAIL 2 | 4 Nw Oil City, LA | PICTURE OF 2 INCH TWEETED TO THE OFFICE. |
| Jan 21, 4:55 PM CST | HAIL 2 | Oil City, LA | 2 INCH HAIL TWEETED FROM THE PUBLIC. |
| Jan 21, 5:10 PM CST | HAIL 1 | 1 Ne Hosston, LA | QUARTER SIZE HAIL IN HOSSTON AT I49 AND HWY 2. |
| Jan 21, 5:20 PM CST | HAIL 1 | 6 Wsw Rodessa, TX | QUARTER SIZE HAIL IN THE MCLEOD COMMUNITY. |
| Jan 21, 5:30 PM CST | HAIL 1.25 | 3 Ese Vivian, LA | HAIL CONLEY ROAD |
| Jan 21, 5:50 PM CST | HAIL 2 | Vivian, LA | . |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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, 3:41 PM CST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Shreveport, LA (KBAD), launched 12:00Z, 10.7 hours before the alert went out and 43 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
- 20 J/kg
- Mixed-layer CIN
- -323 J/kg
- Mixed-layer LCL
- 1223 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
029
WFUS54 KSHV 212244
TORSHV
ARC091-LAC015-017-TXC067-203-315-212345-
/O.NEW.KSHV.TO.W.0002.170121T2244Z-170121T2345Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
444 PM CST SAT JAN 21 2017
The National Weather Service in Shreveport has issued a
* Tornado Warning for...
Southern Miller County in southwestern Arkansas...
Northwestern Caddo Parish in northwestern Louisiana...
Northwestern Bossier Parish in northwestern Louisiana...
Southeastern Cass County in northeastern Texas...
Eastern Marion County in northeastern Texas...
Northeastern Harrison County in northeastern Texas...
* Until 545 PM CST
* At 444 PM CST, a severe thunderstorm capable of producing a tornado
was located near Karnack, or 18 miles northeast of Marshall, moving
northeast at 35 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...
Smithland around 450 PM CST.
Oil City around 455 PM CST.
Vivian and McLeod around 510 PM CST.
Hosston and Rodessa around 515 PM CST.
Ida around 525 PM CST.
Other locations impacted by this tornadic thunderstorm include
Uncertain, Gray and Caddo Lake.
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 3260 9408 3270 9425 3303 9403 3301 9367
TIME...MOT...LOC 2244Z 214DEG 30KT 3272 9412
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
061 follow-up statement
422
WWUS54 KSHV 212322
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
522 PM CST SAT JAN 21 2017
TXC203-212329-
/O.CAN.KSHV.TO.W.0002.000000T0000Z-170121T2345Z/
Harrison TX-
522 PM CST SAT JAN 21 2017
...THE TORNADO WARNING FOR South parts of NORTHEASTERN
HARRISON COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has over out of
the warned area. Therefore, the warning has been cancelled.
A tornado watch remains in effect until 900 PM CST for southwestern
Arkansas...northwestern Louisiana...and northeastern Texas.
LAT...LON 3273 9395 3288 9413 3303 9403 3301 9367
TIME...MOT...LOC 2319Z 217DEG 18KT 3291 9404
$$
ARC091-LAC015-017-TXC067-315-212345-
/O.CON.KSHV.TO.W.0002.000000T0000Z-170121T2345Z/
Miller AR-Caddo LA-Bossier LA-Cass TX-Marion TX-
522 PM CST SAT JAN 21 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CST FOR SOUTHERN
MILLER COUNTY...NORTHWESTERN CADDO AND NORTHWESTERN BOSSIER
PARISHES...SOUTHEASTERN CASS AND NORTHEASTERN MARION COUNTIES...
At 519 PM CST, a severe thunderstorm capable of producing a tornado
was located near McLeod, or 15 miles southeast of Atlanta, moving
northeast at 20 mph. Another signature was located Southwest of
Hosston Louisiana.
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.
Locations impacted include...
Vivian, Oil City, Hosston, Rodessa, Ida, Gilliam and McLeod.
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 3273 9395 3288 9413 3303 9403 3301 9367
TIME...MOT...LOC 2319Z 217DEG 18KT 3291 9404
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
06The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 9:44 AM CST | River Flood Warning | SHV | Caldwell, Grant, LaSalle, Winn | 4 days |
| Jan 21, 2:51 PM CST | Lake Wind Advisory | SHV | Bienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 11 more | 34 hr |
| Jan 21, 4:21 PM CST | Special Weather Statement | SHV | Caddo | 54 min |
| Jan 21, 4:49 PM CST | Severe Thunderstorm Warning | SHV | Bossier, Caddo, Webster | 56 min |
| Jan 21, 4:56 PM CST | Tornado Warning | SHV | Bossier, Caddo, Webster | 49 min |
| Jan 21, 5:03 PM CST | Severe Thunderstorm Warning | SHV | Caddo | 57 min |
| Jan 21, 5:30 PM CST | Tornado Warning | SHV | Bossier, Webster | 60 min |
| Jan 21, 5:33 PM CST | Tornado Warning | SHV | Bossier, Claiborne, Webster | 42 min |
| Jan 21, 5:37 PM CST | Tornado Warning | SHV | Grant, Natchitoches, Winn | 38 min |
| Jan 21, 5:41 PM CST | Tornado Warning | SHV | Bossier, Caddo | 49 min |
| Jan 21, 5:46 PM CST | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 44 min |
| Jan 21, 5:34 PM CST | Severe Thunderstorm Warning | SHV | Little River | 56 min |
| Jan 21, 4:10 PM CST | Tornado Warning | SHV | Cass, Harrison, Marion | 50 min |
Nearby
Tornado Warnings in Texas, 2017Tornado Warnings in Louisiana, 2017Tornado Warnings in Arkansas, 2017Every tornado warning in 2017Tornadoes in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.