Alert archive / Texas / Tornado Warnings in 2021
Tornado Warning 30, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Dec 6, 2021, 6:20 AM CST for Liberty County, Texas. It was in force for 25 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
- Dec 6, 2021, 6:20 AM CST (12:20 UTC)
- Expired
- Dec 6, 2021, 6:45 AM CST
- In force
- 25 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Liberty County, TX
The radar
The Houston radar (KHGX), 80 km from the middle of the area, began a volume at 12:20 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
Lake Charles Mun, LA (KLCH), launched 12:00Z, 0.3 hours before the alert went out and 138 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
- 1185 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 725 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 7.2
The text
As transmitted.
969
WFUS54 KHGX 061220
TORHGX
TXC291-061245-
/O.NEW.KHGX.TO.W.0030.211206T1220Z-211206T1245Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Houston/Galveston TX
620 AM CST Mon Dec 6 2021
The National Weather Service in League City has issued a
* Tornado Warning for...
Southeastern Liberty County in southeastern Texas...
* Until 645 AM CST.
* At 620 AM CST, a severe thunderstorm capable of producing a tornado
was located over northeastern Liberty, moving northeast 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...
Hardin around 630 AM CST.
Devers around 635 AM CST.
Daisetta around 640 AM CST.
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 3006 9450 2995 9484 3003 9491 3022 9464
3011 9460 3011 9444
TIME...MOT...LOC 1220Z 238DEG 27KT 3005 9479
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$2 follow-up statements
530
WWUS54 KHGX 061233
SVSHGX
Severe Weather Statement
National Weather Service Houston/Galveston TX
633 AM CST Mon Dec 6 2021
TXC291-061245-
/O.CON.KHGX.TO.W.0030.000000T0000Z-211206T1245Z/
Liberty TX-
633 AM CST Mon Dec 6 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 AM CST FOR EAST
CENTRAL LIBERTY COUNTY...
At 632 AM CST, a severe thunderstorm capable of producing a tornado
was located near Daisetta, or 7 miles northeast of Liberty, moving
northeast at 30 mph.
HAZARD...TORNADO.
SOURCE...Radar indicated rotation.
IMPACT...Expect damage to mobile homes, roofs, and vehicles.
This dangerous storm will be near...
Daisetta around 640 AM CST.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 3007 9458 3002 9476 3006 9482 3022 9464
3011 9460 3011 9444
TIME...MOT...LOC 1232Z 238DEG 27KT 3010 9470
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$659
WWUS54 KHGX 061248
SVSHGX
Severe Weather Statement
National Weather Service Houston/Galveston TX
648 AM CST Mon Dec 6 2021
TXC291-061258-
/O.EXP.KHGX.TO.W.0030.000000T0000Z-211206T1245Z/
Liberty TX-
648 AM CST Mon Dec 6 2021
...THE TORNADO WARNING FOR EAST CENTRAL LIBERTY COUNTY HAS EXPIRED...
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 allowed to expire. However gusty
winds are still possible with this thunderstorm.
LAT...LON 3007 9458 3002 9476 3006 9482 3022 9464
3011 9460 3011 9444
TIME...MOT...LOC 1248Z 238DEG 27KT 3016 9460
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 6, 3:28 AM CST | Small Craft Advisory | HGX | 24 hr | |
| Dec 6, 6:09 AM CST | Special Weather Statement | HGX | Liberty | 36 min |
| Dec 6, 10:09 AM CST | Special Weather Statement | HGX | Brazos, Burleson, Washington | 21 min |
| Dec 6, 12:05 PM CST | Special Weather Statement | HGX | Fort Bend, Harris, Liberty, Wharton | 70 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.