Alert archive / Texas / Tornado Warnings in 2021
Tornado Warning 29, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Oct 27, 2021, 8:55 AM CDT for Harris County, Liberty County, Texas. It was in force for 35 min. 1 report 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
- Oct 27, 2021, 8:55 AM CDT (13:55 UTC)
- Expired
- Oct 27, 2021, 9:30 AM CDT
- In force
- 35 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Harris County, TX, Liberty County, TX
The radar
The Houston radar (KHGX), 49 km from the middle of the area, began a volume at 13:58 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 |
|---|---|---|---|
| Oct 27, 9:00 AM CDT | TSTM WND DMG | 5 Ese Aldine, TX | TREES DOWN ROSEMARY LANE. |
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 |
|---|---|---|---|
| Oct 27, 7:55 AM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 1.9 hours before the alert went out and 195 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
- 1422 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 604 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 255 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 7.1
The text
As transmitted.
046
WFUS54 KHGX 271355
TORHGX
TXC201-291-271430-
/O.NEW.KHGX.TO.W.0029.211027T1355Z-211027T1430Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Houston/Galveston TX
855 AM CDT Wed Oct 27 2021
The National Weather Service in League City has issued a
* Tornado Warning for...
Southwestern Liberty County in southeastern Texas...
East central Harris County in southeastern Texas...
* Until 930 AM CDT.
* At 855 AM CDT, a severe thunderstorm capable of producing a tornado
was located over East Little York / Homestead, or near Aldine,
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...
East Houston around 905 AM CDT.
Lake Houston Dam, Sheldon and southern Atascocita around 920 AM
CDT.
Barrett and Crosby around 930 AM CDT.
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 2985 9533 2992 9539 3002 9502 2984 9499
TIME...MOT...LOC 1355Z 260DEG 25KT 2990 9532
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$2 follow-up statements
615
WWUS54 KHGX 271401
SVSHGX
Severe Weather Statement
National Weather Service Houston/Galveston TX
901 AM CDT Wed Oct 27 2021
TXC201-291-271430-
/O.CON.KHGX.TO.W.0029.000000T0000Z-211027T1430Z/
Liberty TX-Harris TX-
901 AM CDT Wed Oct 27 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 AM CDT FOR
SOUTHWESTERN LIBERTY AND EAST CENTRAL HARRIS COUNTIES...
At 901 AM CDT, a severe thunderstorm capable of producing a tornado
was located over East Little York / Homestead, or near Humble, moving
east at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Lake Houston Dam, Sheldon and southern Atascocita around 920 AM
CDT.
Barrett and Crosby around 930 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 2985 9528 2994 9532 3002 9502 2984 9499
TIME...MOT...LOC 1401Z 260DEG 25KT 2991 9527
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$195
WWUS54 KHGX 271412
SVSHGX
Severe Weather Statement
National Weather Service Houston/Galveston TX
912 AM CDT Wed Oct 27 2021
TXC201-291-271430-
/O.CON.KHGX.TO.W.0029.000000T0000Z-211027T1430Z/
Liberty TX-Harris TX-
912 AM CDT Wed Oct 27 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 AM CDT FOR
SOUTHWESTERN LIBERTY AND EAST CENTRAL HARRIS COUNTIES...
At 912 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Lake Houston Dam, or near Barrett, 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...
Barrett and Crosby around 925 AM CDT.
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 2985 9520 2997 9521 3002 9502 2984 9499
TIME...MOT...LOC 1412Z 259DEG 28KT 2991 9514
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 26, 10:39 PM CDT | Rip Current Statement | HGX | Brazoria, Galveston, Matagorda | 21 hr |
| Oct 27, 6:10 AM CDT | Special Marine Warning | HGX | 50 min | |
| Oct 27, 6:44 AM CDT | Special Weather Statement | HGX | Austin, Brazos, Grimes, Madison, Washington | 46 min |
| Oct 27, 6:56 AM CDT | Special Marine Warning | HGX | 34 min | |
| Oct 27, 6:58 AM CDT | Special Marine Warning | HGX | 32 min | |
| Oct 27, 7:23 AM CDT | Special Marine Warning | HGX | 37 min | |
| Oct 27, 7:31 AM CDT | Special Weather Statement | HGX | Austin, Colorado, Grimes, Jackson, Montgomery, Walker and 3 more | 44 min |
| Oct 27, 8:06 AM CDT | Tornado Warning | HGX | Harris, Montgomery | 24 min |
| Oct 27, 8:09 AM CDT | Special Marine Warning | HGX | 66 min | |
| Oct 27, 8:09 AM CDT | Special Marine Warning | HGX | 66 min | |
| Oct 27, 8:16 AM CDT | Tornado Warning | HGX | Harris | 29 min |
| Oct 27, 8:28 AM CDT | Special Weather Statement | HGX | Brazoria, Fort Bend, Harris, Liberty, Matagorda, Montgomery and 4 more | 92 min |
| Oct 27, 8:38 AM CDT | Severe Thunderstorm Warning | HGX | Harris | 37 min |
| Oct 27, 8:48 AM CDT | Tornado Warning | HGX | Harris, Liberty, Montgomery | 27 min |
| Oct 27, 8:57 AM CDT | Special Marine Warning | HGX | 93 min | |
| Oct 27, 9:16 AM CDT | Severe Thunderstorm Warning | HGX | Harris | 29 min |
| Oct 27, 9:23 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Harris, Liberty | 37 min |
| Oct 27, 9:31 AM CDT | Special Marine Warning | HGX | 119 min | |
| Oct 27, 9:52 AM CDT | Special Weather Statement | HGX | Chambers, Galveston | 53 min |
| Oct 27, 9:58 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 32 min |
| Oct 27, 11:31 AM CDT | Special Marine Warning | HGX | 29 min | |
| Oct 27, 11:51 AM CDT | Special Marine Warning | HGX | 84 min | |
| Oct 27, 3:05 PM CDT | Wind Advisory | HGX | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more | 28 hr |
| Oct 27, 3:26 PM CDT | Gale Warning | HGX | 36 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.