Alert archive / Texas / Tornado Warnings in 2017

Tornado Warning 9, NWS Houston/Galveston, TX

January 16, 2017Fort Bend County, Harris County, Waller County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Jan 16, 2017, 8:25 AM CST for Fort Bend County, Harris County, Waller County, Texas. It was in force for 35 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
Jan 16, 2017, 8:25 AM CST (14:25 UTC)
Expired
Jan 16, 2017, 9:00 AM CST
In force
35 min
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Fort Bend County, TX, Harris County, TX, Waller County, TX

The radar

The Houston radar (KHGX), 93 km from the middle of the area, began a volume at 14:25 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.

IssuedProductOfficeLasted
Jan 2, 1:39 AM CSTSevere Thunderstorm WatchSPC59 days

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 2.4 hours before the alert went out and 256 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.

Skew-T log-pSkew-T log-p diagram, Corpus Christi, TX at 12:00Z on 2017-01-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 365 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2017-01-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
365 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
639 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
219 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.0

Open this sounding in Storm Lab

The text

As transmitted.

012 
WFUS54 KHGX 161425
TORHGX
TXC157-201-473-161500-
/O.NEW.KHGX.TO.W.0009.170116T1425Z-170116T1500Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Houston/Galveston TX
825 AM CST MON JAN 16 2017

The National Weather Service in League City has issued a

* Tornado Warning for...
  Southeastern Waller County in southeastern Texas...
  West central Harris County in southeastern Texas...
  Northwestern Fort Bend County in southeastern Texas...

* Until 900 AM CST.

* At 825 AM CST, a severe thunderstorm capable of producing a tornado
  was located over Simonton, or 8 miles south of Brookshire, moving
  northeast at 30 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Expect damage to mobile homes, roofs, and vehicles. 

* Locations impacted include...
  Katy, Brookshire, Fulshear, Simonton, Pattison, Orchard, Weston
  Lakes and Cinco Ranch.

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 2969 9604 2968 9601 2970 9602 2971 9601
      2972 9603 2977 9603 3004 9590 2990 9566
      2960 9598 2962 9602 2965 9602 2966 9603
      2967 9602 2968 9603 2967 9605 2968 9606
TIME...MOT...LOC 1425Z 215DEG 26KT 2967 9600 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$
2 follow-up statements
871 
WWUS54 KHGX 161444
SVSHGX

Severe Weather Statement
National Weather Service Houston/Galveston TX
844 AM CST MON JAN 16 2017

TXC157-201-473-161500-
/O.CON.KHGX.TO.W.0009.000000T0000Z-170116T1500Z/
Waller TX-Harris TX-Fort Bend TX-
844 AM CST MON JAN 16 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 AM CST FOR
SOUTHEASTERN WALLER...WEST CENTRAL HARRIS AND NORTH CENTRAL FORT BEND
COUNTIES...
    
At 843 AM CST, a severe thunderstorm capable of producing a tornado
was located over Brookshire, moving northeast at 25 mph.

HAZARD...TORNADO. 

SOURCE...Radar indicated rotation. 

IMPACT...Expect damage to mobile homes, roofs, and vehicles. 

Locations impacted include...
Katy, Brookshire and Pattison. 

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 2974 9599 3004 9590 2990 9566 2970 9591
TIME...MOT...LOC 1443Z 215DEG 23KT 2976 9592 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
914 
WWUS54 KHGX 161456
SVSHGX

Severe Weather Statement
National Weather Service Houston/Galveston TX
856 AM CST MON JAN 16 2017

TXC157-201-473-161506-
/O.EXP.KHGX.TO.W.0009.000000T0000Z-170116T1500Z/
Waller TX-Harris TX-Fort Bend TX-
856 AM CST MON JAN 16 2017

...THE TORNADO WARNING FOR SOUTHEASTERN WALLER...WEST CENTRAL HARRIS
AND NORTH CENTRAL FORT BEND COUNTIES WILL EXPIRE AT 900 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.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
League City.

LAT...LON 2974 9599 3004 9590 2990 9566 2970 9591
TIME...MOT...LOC 1456Z 215DEG 26KT 2983 9586 

$$

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 16, 3:41 AM CSTSpecial Weather StatementHGXMadison49 min
Jan 16, 3:51 AM CSTSpecial Weather StatementHGXGrimes54 min
Jan 16, 3:56 AM CSTSpecial Weather StatementHGXHouston34 min
Jan 16, 4:16 AM CSTSpecial Weather StatementHGXWharton44 min
Jan 16, 4:42 AM CSTTornado WarningHGXAustin, Colorado, Fort Bend, Wharton33 min
Jan 16, 4:44 AM CSTSpecial Weather StatementHGXGrimes46 min
Jan 16, 4:51 AM CSTAreal Flood AdvisoryHGXAustin, Colorado, Fort Bend, Wharton54 min
Jan 16, 5:16 AM CSTTornado WarningHGXAustin, Colorado, Fort Bend, Wharton29 min
Jan 16, 5:47 AM CSTTornado WarningHGXAustin, Fort Bend, Waller, Wharton28 min
Jan 16, 5:48 AM CSTAreal Flood AdvisoryHGXAustin, Colorado, Fort Bend, Waller, Wharton57 min
Jan 16, 6:12 AM CSTTornado WarningHGXAustin, Fort Bend, Harris, Waller33 min
Jan 16, 6:46 AM CSTTornado WarningHGXHarris29 min
Jan 16, 6:58 AM CSTAreal Flood AdvisoryHGXAustin, Fort Bend, Harris, Waller62 min
Jan 16, 7:14 AM CSTTornado WarningHGXHarris31 min
Jan 16, 7:40 AM CSTTornado WarningHGXHarris, Montgomery35 min
Jan 16, 8:10 AM CSTTornado WarningHGXHarris, Liberty, Montgomery35 min
Jan 16, 8:39 AM CSTSpecial Weather StatementHGXMontgomery36 min
Jan 16, 8:52 AM CSTSpecial Weather StatementHGXSan Jacinto23 min
Jan 16, 8:55 AM CSTSpecial Weather StatementHGXWaller50 min
Jan 16, 9:02 AM CSTTornado WarningHGXMontgomery28 min
Jan 16, 9:24 AM CSTSpecial Weather StatementHGXSan Jacinto36 min
Jan 16, 9:42 AM CSTSpecial Weather StatementHGXMontgomery33 min
Jan 16, 10:06 AM CSTSpecial Weather StatementHGXSan Jacinto39 min
Jan 16, 11:04 AM CSTSpecial Weather StatementHGXPolk26 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.