Alert archive / Texas / Tornado Warnings in 2017
Tornado Warning 8, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Jan 16, 2017, 8:10 AM CST for Harris County, Liberty County, Montgomery County, Texas. It was in force for 35 min. 2 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
- Jan 16, 2017, 8:10 AM CST (14:10 UTC)
- Expired
- Jan 16, 2017, 8:45 AM CST
- 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, Montgomery County, TX
The radar
The Houston radar (KHGX), 80 km from the middle of the area, began a volume at 14:10 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 |
|---|---|---|---|
| Jan 16, 8:35 AM CST | TORNADO | 4 Wnw Spring, TX | VIDEO SHOWED TORNADO CROSSING SH 99 NEAR INTERSTATE 45. SURVEY SHOWED ONLY TWIGS AND PINE NEEDLES IN THE AREA. RATED EF0. |
| Jan 16, 8:40 AM CST | TORNADO | 2 Sse Oak Ridge North, TX | MINOR DAMAGE FROM EF0 TORNADO 6 NNW SPRING. DOOR WINDOW SHATTERED AT STORE... LARGE LIMB STRIPPED OFF PINE. |
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 |
|---|---|---|---|
| Jan 2, 1:39 AM CST | Severe Thunderstorm Watch | SPC | 59 days |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 2.2 hours before the alert went out and 208 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
- 423 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 553 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 226 m²/s²
- 0-3 km storm-relative helicity
- 290 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.0
The text
As transmitted.
588 WFUS54 KHGX 161410 TORHGX TXC201-291-339-161445- /O.NEW.KHGX.TO.W.0008.170116T1410Z-170116T1445Z/ BULLETIN - EAS ACTIVATION REQUESTED Tornado Warning National Weather Service Houston/Galveston TX 810 AM CST MON JAN 16 2017 The National Weather Service in League City has issued a * Tornado Warning for... Northwestern Liberty County in southeastern Texas... Southeastern Montgomery County in southeastern Texas... North central Harris County in southeastern Texas... * Until 845 AM CST. * At 810 AM CST, a severe thunderstorm capable of producing a tornado was located over Splashtown, or over Spring, moving northeast at 20 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Expect damage to mobile homes, roofs, and vehicles. * Locations impacted include... Spring, The Woodlands, Oak Ridge North, Shenandoah, Splendora, Patton Village, Woodloch, Porter Heights, Splashtown and Chateau Woods. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW! Move to 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. Motorists should not take shelter under highway overpasses. If you cannot safely drive away from the tornado, as a last resort, either park your vehicle and stay put, or abandon your vehicle and lie down in a low lying area and protect yourself from flying debris. && LAT...LON 3003 9543 3010 9551 3037 9530 3024 9512 TIME...MOT...LOC 1410Z 223DEG 18KT 3010 9541 TORNADO...RADAR INDICATED HAIL...0.00IN $$ 40
2 follow-up statements
757
WWUS54 KHGX 161424
SVSHGX
Severe Weather Statement
National Weather Service Houston/Galveston TX
824 AM CST MON JAN 16 2017
TXC201-291-161432-
/O.CAN.KHGX.TO.W.0008.000000T0000Z-170116T1445Z/
Liberty TX-Harris TX-
824 AM CST MON JAN 16 2017
...THE TORNADO WARNING FOR NORTHWESTERN LIBERTY AND NORTH CENTRAL
HARRIS COUNTIES IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
LAT...LON 3010 9538 3015 9547 3037 9530 3028 9518
TIME...MOT...LOC 1422Z 216DEG 22KT 3017 9536
$$
TXC339-161445-
/O.CON.KHGX.TO.W.0008.000000T0000Z-170116T1445Z/
Montgomery TX-
824 AM CST MON JAN 16 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 AM CST FOR
SOUTHEASTERN MONTGOMERY COUNTY...
At 822 AM CST, a severe thunderstorm capable of producing a tornado
was located over Porter Heights, or 7 miles east of The Woodlands,
moving northeast at 25 mph.
HAZARD...TORNADO.
SOURCE...Radar indicated rotation.
IMPACT...Expect damage to mobile homes, roofs, and vehicles.
Locations impacted include...
The Woodlands, Oak Ridge North, Shenandoah, Woodloch, Chateau Woods
and Porter Heights.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to 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.
Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.
&&
LAT...LON 3010 9538 3015 9547 3037 9530 3028 9518
TIME...MOT...LOC 1422Z 216DEG 22KT 3017 9536
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
40623
WWUS54 KHGX 161437
SVSHGX
Severe Weather Statement
National Weather Service Houston/Galveston TX
837 AM CST MON JAN 16 2017
TXC339-161446-
/O.EXP.KHGX.TO.W.0008.000000T0000Z-170116T1445Z/
Montgomery TX-
837 AM CST MON JAN 16 2017
...THE TORNADO WARNING FOR SOUTHEASTERN MONTGOMERY COUNTY WILL EXPIRE
AT 845 AM CST...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire. However gusty
winds and heavy rainfall are still possible with this storm.
LAT...LON 3010 9538 3015 9547 3037 9530 3028 9518
TIME...MOT...LOC 1436Z 215DEG 18KT 3023 9533
$$
40The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 16, 3:41 AM CST | Special Weather Statement | HGX | Madison | 49 min |
| Jan 16, 3:51 AM CST | Special Weather Statement | HGX | Grimes | 54 min |
| Jan 16, 3:56 AM CST | Special Weather Statement | HGX | Houston | 34 min |
| Jan 16, 4:16 AM CST | Special Weather Statement | HGX | Wharton | 44 min |
| Jan 16, 4:42 AM CST | Tornado Warning | HGX | Austin, Colorado, Fort Bend, Wharton | 33 min |
| Jan 16, 4:44 AM CST | Special Weather Statement | HGX | Grimes | 46 min |
| Jan 16, 4:51 AM CST | Areal Flood Advisory | HGX | Austin, Colorado, Fort Bend, Wharton | 54 min |
| Jan 16, 5:16 AM CST | Tornado Warning | HGX | Austin, Colorado, Fort Bend, Wharton | 29 min |
| Jan 16, 5:47 AM CST | Tornado Warning | HGX | Austin, Fort Bend, Waller, Wharton | 28 min |
| Jan 16, 5:48 AM CST | Areal Flood Advisory | HGX | Austin, Colorado, Fort Bend, Waller, Wharton | 57 min |
| Jan 16, 6:12 AM CST | Tornado Warning | HGX | Austin, Fort Bend, Harris, Waller | 33 min |
| Jan 16, 6:46 AM CST | Tornado Warning | HGX | Harris | 29 min |
| Jan 16, 6:58 AM CST | Areal Flood Advisory | HGX | Austin, Fort Bend, Harris, Waller | 62 min |
| Jan 16, 7:14 AM CST | Tornado Warning | HGX | Harris | 31 min |
| Jan 16, 7:40 AM CST | Tornado Warning | HGX | Harris, Montgomery | 35 min |
| Jan 16, 8:25 AM CST | Tornado Warning | HGX | Fort Bend, Harris, Waller | 35 min |
| Jan 16, 8:39 AM CST | Special Weather Statement | HGX | Montgomery | 36 min |
| Jan 16, 8:52 AM CST | Special Weather Statement | HGX | San Jacinto | 23 min |
| Jan 16, 8:55 AM CST | Special Weather Statement | HGX | Waller | 50 min |
| Jan 16, 9:02 AM CST | Tornado Warning | HGX | Montgomery | 28 min |
| Jan 16, 9:24 AM CST | Special Weather Statement | HGX | San Jacinto | 36 min |
| Jan 16, 9:42 AM CST | Special Weather Statement | HGX | Montgomery | 33 min |
| Jan 16, 10:06 AM CST | Special Weather Statement | HGX | San Jacinto | 39 min |
| Jan 16, 11:04 AM CST | Special Weather Statement | HGX | Polk | 26 min |
Nearby
Tornado Warnings in Texas, 2017Every tornado warning in 2017Tornadoes in 2017
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.