Alert archive / Texas / Tornado Warnings in 2021
Tornado Warning 21, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Jun 5, 2021, 9:24 PM CDT for Austin County, Colorado County, Waller County, Texas. It was in force for 36 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
- Jun 5, 2021, 9:24 PM CDT (02:24 UTC)
- Expired
- Jun 5, 2021, 10:00 PM CDT
- In force
- 36 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Austin County, TX, Colorado County, TX, Waller County, TX
The radar
The Houston radar (KHGX), 111 km from the middle of the area, began a volume at 02:27 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
Corpus Christi, TX (KCRP), launched 00:00Z, 2.4 hours before the alert went out and 254 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
- 1246 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1083 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.1
The text
As transmitted.
722
WFUS54 KHGX 060224
TORHGX
TXC015-089-473-060300-
/O.NEW.KHGX.TO.W.0021.210606T0224Z-210606T0300Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Houston/Galveston TX
924 PM CDT Sat Jun 5 2021
The National Weather Service in League City has issued a
* Tornado Warning for...
Northeastern Colorado County in southeastern Texas...
Southeastern Austin County in southeastern Texas...
Southwestern Waller County in southeastern Texas...
* Until 1000 PM CDT.
* At 924 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Sealy, moving east at 25 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...
Sealy around 935 PM CDT.
San Felipe around 940 PM 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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 2971 9626 2979 9632 2991 9605 2975 9597
TIME...MOT...LOC 0224Z 254DEG 24KT 2976 9622
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$1 follow-up statement
495
WWUS54 KHGX 060253
SVSHGX
Severe Weather Statement
National Weather Service Houston/Galveston TX
953 PM CDT Sat Jun 5 2021
TXC015-089-473-060302-
/O.EXP.KHGX.TO.W.0021.000000T0000Z-210606T0300Z/
Colorado TX-Austin TX-Waller TX-
953 PM CDT Sat Jun 5 2021
...THE TORNADO WARNING FOR NORTHEASTERN COLORADO...SOUTHEASTERN
AUSTIN AND SOUTHWESTERN WALLER COUNTIES WILL EXPIRE AT 1000 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
LAT...LON 2971 9626 2979 9632 2991 9605 2975 9597
TIME...MOT...LOC 0252Z 254DEG 24KT 2981 9601
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 7:58 PM CDT | Areal Flood Advisory | HGX | Harris, Montgomery | 2 hr |
| Jun 5, 8:36 PM CDT | Special Weather Statement | HGX | Austin | 39 min |
| Jun 5, 8:48 PM CDT | Tornado Warning | HGX | Austin, Colorado | 27 min |
| Jun 5, 9:11 PM CDT | Tornado Warning | HGX | Austin, Colorado | 16 min |
| Jun 5, 9:51 PM CDT | Special Weather Statement | HGX | Waller | 39 min |
| Jun 5, 10:30 PM CDT | Special Weather Statement | HGX | Fort Bend | 30 min |
| Jun 5, 11:07 PM CDT | Areal Flood Advisory | HGX | Austin, Colorado, Fort Bend, Waller | 3 hr |
| Jun 6, 5:30 PM CDT | Special Weather Statement | HGX | Liberty | 45 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.