Alert archive / Texas / Tornado Warnings in 2021
Tornado Warning 11, NWS Shreveport, LA
NWS Shreveport, LA issued this tornado warning at Mar 27, 2021, 7:31 PM CDT for Harrison County, Marion County, Texas. It was in force for 44 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
- Mar 27, 2021, 7:31 PM CDT (00:31 UTC)
- Expired
- Mar 27, 2021, 8:15 PM CDT
- In force
- 44 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Harrison County, TX, Marion County, TX
The radar
The Shreveport radar (KSHV), 45 km from the middle of the area, began a volume at 00:33 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 |
|---|---|---|---|
| Mar 27, 3:25 PM CDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 0.5 hours before the alert went out and 49 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.
292
WFUS54 KSHV 280031
TORSHV
TXC203-315-280115-
/O.NEW.KSHV.TO.W.0011.210328T0031Z-210328T0115Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
731 PM CDT Sat Mar 27 2021
The National Weather Service in Shreveport has issued a
* Tornado Warning for...
Southeastern Marion County in northeastern Texas...
Northeastern Harrison County in northeastern Texas...
* Until 815 PM CDT.
* At 731 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Woodlawn, or 9 miles north of Marshall, moving
east at 30 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...
Woodlawn around 740 PM CDT.
Karnack around 755 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Uncertain, Gray, Leigh and Nesbitt.
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.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 3282 9405 3277 9404 3259 9405 3259 9447
3276 9447
TIME...MOT...LOC 0031Z 260DEG 27KT 3267 9440
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
151 follow-up statement
402
WWUS54 KSHV 280053
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
753 PM CDT Sat Mar 27 2021
TXC203-315-280115-
/O.CON.KSHV.TO.W.0011.000000T0000Z-210328T0115Z/
Marion TX-Harrison TX-
753 PM CDT Sat Mar 27 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
SOUTHEASTERN MARION AND NORTHEASTERN HARRISON COUNTIES...
At 753 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Karnack, or 14 miles northeast of Marshall, moving
east at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
southeastern Marion and northeastern Harrison Counties, including the
following locations... Uncertain, Gray and Leigh.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 3282 9405 3277 9404 3259 9405 3260 9432
3278 9432
TIME...MOT...LOC 0053Z 257DEG 26KT 3271 9422
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
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, 7:39 PM CDT | Tornado Warning | SHV | Panola | 51 min |
| Mar 27, 8:04 PM CDT | Tornado Warning | SHV | Harrison, Marion | 41 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 |
Nearby
Tornado Warnings in Texas, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.