Alert archive / Texas / Tornado Warnings in 2021
Tornado Warning 13, NWS Shreveport, LA
NWS Shreveport, LA issued this tornado warning at Mar 27, 2021, 8:04 PM CDT for Harrison County, Marion County, Texas; Bossier Parish, Caddo Parish, Louisiana. It was in force for 41 min. 3 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
- Mar 27, 2021, 8:04 PM CDT (01:04 UTC)
- Expired
- Mar 27, 2021, 8:45 PM CDT
- In force
- 41 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Bossier Parish, LA, Caddo Parish, LA, Harrison County, TX, Marion County, TX
The radar
The Shreveport radar (KSHV), 37 km from the middle of the area, began a volume at 01:04 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 |
|---|---|---|---|
| Mar 27, 8:15 PM CDT | TSTM WND DMG | 1 N Oil City, LA | POWER LINES WERE DOWNED JUST NORTH OF OIL CITY. |
| Mar 27, 8:16 PM CDT | TSTM WND DMG | 2 Ne Oil City, LA | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 WNW BELCHER. TREES DOWN ON BELCHER OIL CITY ROAD. |
| Mar 27, 8:33 PM CDT | TSTM WND DMG | 1 Wnw Belcher, LA | TREES DOWN ON BELCHER OIL CITY ROAD. |
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 |
|---|---|---|---|
| Mar 27, 3:25 PM CDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 1.1 hours before the alert went out and 38 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
- 1297 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 953 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 163 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 8.1
The text
As transmitted.
634
WFUS54 KSHV 280104
TORSHV
LAC015-017-TXC203-315-280145-
/O.NEW.KSHV.TO.W.0013.210328T0104Z-210328T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
804 PM CDT Sat Mar 27 2021
The National Weather Service in Shreveport has issued a
* Tornado Warning for...
Northwestern Caddo Parish in northwestern Louisiana...
Northwestern Bossier Parish in northwestern Louisiana...
Eastern Marion County in northeastern Texas...
Northeastern Harrison County in northeastern Texas...
* Until 845 PM CDT.
* At 804 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Karnack, or 20 miles northeast of Marshall, moving
east at 35 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...
Oil City and Mooringsport around 815 PM CDT.
Hosston and Belcher around 830 PM CDT.
Gilliam around 835 PM CDT.
Plain Dealing around 845 PM CDT.
Other locations impacted by this tornadic thunderstorm include Dixie,
Uncertain, Alden Bridge, Caddo Lake, Gray and Cavett.
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 3264 9418 3285 9419 3295 9369 3273 9365
TIME...MOT...LOC 0104Z 249DEG 28KT 3274 9409
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
152 follow-up statements
198
WWUS54 KSHV 280124
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
824 PM CDT Sat Mar 27 2021
TXC203-315-280133-
/O.CAN.KSHV.TO.W.0013.000000T0000Z-210328T0145Z/
Marion TX-Harrison TX-
824 PM CDT Sat Mar 27 2021
...THE TORNADO WARNING FOR EASTERN MARION AND NORTHEASTERN HARRISON
COUNTIES IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1100 PM CDT for northwestern
Louisiana.
LAT...LON 3268 9399 3288 9403 3295 9369 3273 9365
TIME...MOT...LOC 0123Z 251DEG 27KT 3278 9392
$$
LAC015-017-280145-
/O.CON.KSHV.TO.W.0013.000000T0000Z-210328T0145Z/
Caddo LA-Bossier LA-
824 PM CDT Sat Mar 27 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
NORTHWESTERN CADDO AND NORTHWESTERN BOSSIER PARISHES...
At 824 PM CDT, a severe thunderstorm capable of producing a tornado
was located just northeast of Oil City, or 22 miles north of
Shreveport, moving east at 30 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...
Hosston and Belcher around 830 PM CDT.
Gilliam around 835 PM CDT.
Plain Dealing around 850 PM CDT.
Other locations impacted by this tornadic thunderstorm include Alden
Bridge, Caddo Lake and Cavett.
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 3268 9399 3288 9403 3295 9369 3273 9365
TIME...MOT...LOC 0123Z 251DEG 27KT 3278 9392
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
15263
WWUS54 KSHV 280141
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
841 PM CDT Sat Mar 27 2021
LAC015-017-280151-
/O.EXP.KSHV.TO.W.0013.000000T0000Z-210328T0145Z/
Caddo LA-Bossier LA-
841 PM CDT Sat Mar 27 2021
...THE TORNADO WARNING FOR NORTHWESTERN CADDO AND NORTHWESTERN
BOSSIER PARISHES WILL EXPIRE AT 845 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
A Tornado Watch remains in effect until 1100 PM CDT for northwestern
Louisiana.
LAT...LON 3268 9399 3288 9403 3295 9369 3273 9365
TIME...MOT...LOC 0141Z 249DEG 28KT 3283 9377
$$
15The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 7:03 PM CDT | Special Weather Statement | SHV | Cass | 42 min |
| Mar 27, 7:20 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Cass | 40 min |
| Mar 27, 7:31 PM CDT | Tornado Warning | SHV | Harrison, Marion | 44 min |
| Mar 27, 7:39 PM CDT | Tornado Warning | SHV | Panola | 51 min |
| Mar 27, 9:45 PM CDT | Special Weather Statement | SHV | Rusk | 45 min |
| Mar 27, 9:52 PM CDT | Severe Thunderstorm Warning | SHV | Harrison, Panola, Rusk | 53 min |
| Mar 27, 10:39 PM CDT | Severe Thunderstorm Warning | SHV | Harrison, Panola | 51 min |
| Mar 28, 1:33 AM CDT | Special Weather Statement | SHV | Shelby | 42 min |
| Mar 27, 8:11 PM CDT | Tornado Warning | SHV | Caddo, De Soto | 49 min |
| Mar 27, 8:46 PM CDT | Tornado Warning | SHV | Bienville, Bossier, Caddo, Webster | 19 min |
| Mar 27, 10:23 PM CDT | Severe Thunderstorm Warning | SHV | Claiborne, Union | 67 min |
| Mar 27, 11:30 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Bossier, Claiborne, Webster | 45 min |
Nearby
Tornado Warnings in Texas, 2021Tornado Warnings in Louisiana, 2021Every tornado warning in 2021Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.