Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS Houston/Galveston, TX

February 14, 20177 counties in Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Feb 14, 2017, 7:25 AM CST for 7 counties in Texas. It was in force for 65 min. 17 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: Feb 14, 2017, 7:25 AM CST (13:25 UTC)
Expired: Feb 14, 2017, 8:30 AM CST
In force: 65 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Austin County, TX, Brazoria County, TX, Colorado County, TX, Fort Bend County, TX, Jackson County, TX, Matagorda County, TX, Wharton County, TX

The radar

The Houston radar (KHGX), 144 km from the middle of the area, began a volume at 13:25 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.

What was reported inside it

Time	Report	Where	Remark
Feb 14, 7:35 AM CST	TSTM WND DMG	1 Wnw El Campo, TX	TRAINED SPOTTER REPORTS POWER LINES DOWN ON W NORRIS AT W LOOP IN EL CAMPO
Feb 14, 7:40 AM CST	TORNADO	1 Ene Wharton, TX	EF-0 FROM 740 AM TO 745 AM. ESTIMATED PEAK WIND 75 MPH. PATH LENGTH APPROXIMATELY 1 MILE AND PATH WIDTH APPROXIMATELY 200 YARDS FROM NEAR NORTH RICHMOND ROAD TO COUNTY ROAD 135 IN WHARTON.
Feb 14, 8:00 AM CST	TSTM WND DMG	1 Ene Wharton, TX	PUBLIC REPORTS DEBRIS AT BUSINESS 59 AT E BOLING HWY IN WHARTON
Feb 14, 8:00 AM CST	TORNADO	1 Ene Wharton, TX	DEBRIS AT BUSINESS 59 AT E BOLING HWY IN WHARTON. NWS STORM SURVEY DETERMINED EF-0 DAMAGE MIXED WITH MICROBURST WINDS.
Feb 14, 8:00 AM CST	TORNADO	1 Ene Wharton, TX	DEBRIS AT BUSINESS 59 AT E BOLING HWY IN WHARTON. NWS STORM SURVEY DETERMINED EF-0 DAMAGE MIXED WITH MICROBURTS WINDS.
Feb 14, 8:13 AM CST	TORNADO	6 Ssw Rosenberg, TX	TRAINED SPOTTER REPORTS BRIEF TORNADO TOUCHDOWN SSW OF ROSENBURG
Feb 14, 8:15 AM CST	TORNADO	Van Vleck, TX	* 6 INJ * EF-1 FROM 815 AM TO 820 AM. ESTIMATED PEAK WIND 100 MPH. PATH LENGTH APPROXIMATELY 1.5 MILES AND PATH WIDTH APPROXIMATELY 150 YARDS IN VAN VLECK.
Feb 14, 8:15 AM CST	TORNADO	Van Vleck, TX	* 6 INJ * EF-1 FROM 815 AM TO 820 AM. ESTIMATED PEAK WIND 100 MPH. PATH LENGTH APPROXIMATELY 1.7 MILES AND PATH WIDTH APPROXIMATELY 300 YARDS IN VAN VLECK.
Feb 14, 8:20 AM CST	TSTM WND DMG	Van Vleck, TX	* 2 INJ * TREES DAMAGE... RVS FLIPPED OVER... DAMAGE TO MULTIPLE HOMES IN VAN VLECK. DAMAGE PATH ABOUT 1 MILE LONG. INJURIES TO 1 MAN IN A HOME... 1 WOMAN IN FLIPPED MOBILE HOME.
Feb 14, 8:20 AM CST	TSTM WND DMG	Van Vleck, TX	TREES DAMAGE... RVS FLIPPED OVER... DAMAGE TO AT LEAST 1 HOME IN VAN VLECK. DAMAGE PATH ABOUT 1 MILE LONG.
Feb 14, 8:20 AM CST	TORNADO	Van Vleck, TX	* 6 INJ * EF1 TORNADO. TREES DAMAGE... RVS FLIPPED OVER... DAMAGE TO MULTIPLE HOMES IN VAN VLECK. DAMAGE PATH ABOUT 1 MILE LONG. 6 MINOR INJURIES. NONE SERIOUS.
Feb 14, 8:20 AM CST	TORNADO	Van Vleck, TX	* 6 INJ * EF1 TORNADO. TREES DAMAGE... RVS FLIPPED OVER... DAMAGE TO MULTIPLE HOMES IN VAN VLECK. DAMAGE PATH ABOUT 1 MILE LONG. 6 MINOR INJURIES. NONE SERIOUS.
Feb 14, 8:21 AM CST	TORNADO	5 Wsw First Colony, TX	EF-2 FROM 821 AM TO 825 AM. ESTIMATED PEAK WIND 115 MPH. PATH LENGTH APPROXIMATELY 0.7 MILES AND PATH WIDTH APPROXIMATELY 300 YARDS FROM 4 MILES SOUTHEAST OF RICHMOND TO 5 MILES SOUTHEAST OF RICHMOND.
Feb 14, 8:25 AM CST	TORNADO	5 Wsw First Colony, TX	TREE... FENCE... STRUCTURAL DAMAGE IN TARA SUBDIVISION... BRIDLEWOOD ESTATES AND GREATWOOD. CONFIRMED EF2 TORNADO DAMAGE IN BRIDLEWOOD ESTATES.
Feb 14, 8:25 AM CST	TORNADO	5 Wsw First Colony, TX	TREE... FENCE... STRUCTURAL DAMAGE IN TARA SUBDIVISION NEAR BRIDLEWOOD ESTATES AND GREATWOOD. PRELIMINARY TORNADO CLASSIFICATION.
Feb 14, 8:27 AM CST	TORNADO	5 Se Richmond, TX	EF-0 FROM 827 AM TO 830 AM. ESTIMATED PEAK WIND 80 MPH. PATH LENGTH APPROXIMATELY 0.6 MILES AND PATH WIDTH APPROXIMATELY 30 YARDS FROM 5 MILES SOUTHEAST OF RICHMOND TO 6 MILES WEST SOUTHWEST OF FIRST COLONY.
Feb 14, 8:40 AM CST	TORNADO	Sweeny, TX	EF-0 FROM 840 AM TO 845 AM. ESTIMATED PEAK WIND 75 MPH. PATH LENGTH APPROXIMATELY 1.5 MILES AND PATH WIDTH APPROXIMATELY 150 YARDS FROM ALONG COUNTY ROAD 321 TO NEAR THE INTERSECTION OF FM 524 AND COUNTY ROAD 321.

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
Feb 14, 5:09 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 1.4 hours before the alert went out and 153 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1811 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 495 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 209 m²/s²
0-3 km storm-relative helicity: 308 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 16.1

Open this sounding in Storm Lab

The text

As transmitted.

016 
WUUS54 KHGX 141325
SVRHGX
TXC015-039-089-157-239-321-481-141430-
/O.NEW.KHGX.SV.W.0013.170214T1325Z-170214T1430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Houston/Galveston TX
725 AM CST TUE FEB 14 2017

The National Weather Service in League City has issued a

* Severe Thunderstorm Warning for...
  Wharton County in southeastern Texas...
  Southeastern Colorado County in southeastern Texas...
  Matagorda County in southeastern Texas...
  Western Brazoria County in southeastern Texas...
  Southeastern Austin County in southeastern Texas...
  Fort Bend County in southeastern Texas...
  Jackson County in south central Texas...

* Until 830 AM CST.

* At 724 AM CST, severe thunderstorms were located along a line
  extending from near Wallis to near Lolita, moving east at 30 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Southern Sugar Land, southern Missouri City, Matagorda, Rosenberg,
  Alvin, Bay City, Richmond, El Campo, Wharton, Edna, Manvel,
  Palacios, West Columbia, Sweeny, Eagle Lake, Fresno, First Colony,
  South Texas Nuclear Plant, Pecan Grove and Brazoria.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A tornado watch remains in effect until 100 PM CST for south central
and southeastern Texas.

LAT...LON 2859 9643 2860 9643 2863 9637 2863 9647
      2868 9647 2864 9642 2872 9641 2871 9652
      2867 9652 2893 9679 2978 9630 2949 9526
      2853 9589 2841 9617
TIME...MOT...LOC 1324Z 287DEG 27KT 2958 9613 2887 9662 

HAIL...<.75IN
WIND...60MPH
 
$$

Huffman

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 13, 9:35 PM CST	Marine Dense Fog Advisory	HGX		6 hr
Feb 14, 3:47 AM CST	Small Craft Advisory	HGX		12 hr
Feb 14, 5:55 AM CST	Special Weather Statement	HGX	Austin, Colorado	50 min
Feb 14, 6:28 AM CST	Severe Thunderstorm Warning	HGX	Colorado, Jackson, Matagorda, Wharton	62 min
Feb 14, 6:42 AM CST	Severe Thunderstorm Warning	HGX	Austin, Brazos, Burleson, Colorado, Grimes, Waller and 1 more	48 min
Feb 14, 6:45 AM CST	Tornado Warning	HGX	Colorado, Jackson, Wharton	45 min
Feb 14, 6:56 AM CST	Areal Flood Advisory	HGX	Colorado, Jackson, Wharton	3 hr
Feb 14, 7:28 AM CST	Special Weather Statement	HGX	Grimes, Montgomery, Waller	62 min
Feb 14, 7:29 AM CST	Tornado Warning	HGX	Brazoria, Fort Bend, Matagorda, Wharton	31 min
Feb 14, 7:31 AM CST	Areal Flood Advisory	HGX	Austin, Colorado, Fort Bend, Jackson, Wharton	3 hr
Feb 14, 7:39 AM CST	Tornado Warning	HGX	Austin, Fort Bend, Wharton	36 min
Feb 14, 7:55 AM CST	Tornado Warning	HGX	Brazoria, Fort Bend, Harris, Wharton	50 min
Feb 14, 7:59 AM CST	Special Marine Warning	HGX		2 hr
Feb 14, 8:16 AM CST	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend, Harris, Montgomery, Walker	44 min
Feb 14, 8:21 AM CST	Severe Thunderstorm Warning	HGX	Harris, Houston, Liberty, Madison, Montgomery, Polk and 3 more	54 min
Feb 14, 8:30 AM CST	Areal Flood Advisory	HGX	Austin, Brazoria, Colorado, Fort Bend, Galveston, Harris and 3 more	2 hr
Feb 14, 8:35 AM CST	Special Marine Warning	HGX		115 min
Feb 14, 8:37 AM CST	Tornado Warning	HGX	Brazoria, Fort Bend, Galveston, Harris	38 min
Feb 14, 8:42 AM CST	Tornado Warning	HGX	Brazoria, Galveston, Matagorda	33 min
Feb 14, 8:45 AM CST	Severe Thunderstorm Warning	HGX	Brazoria, Galveston, Matagorda	30 min
Feb 14, 8:56 AM CST	Severe Thunderstorm Warning	HGX	Brazoria, Chambers, Galveston, Harris, Liberty, Montgomery and 1 more	64 min
Feb 14, 8:58 AM CST	Severe Thunderstorm Warning	HGX	Houston, Liberty, Montgomery, Polk, San Jacinto, Trinity	47 min
Feb 14, 9:09 AM CST	Tornado Warning	HGX	Chambers, Harris, Liberty	30 min
Feb 14, 9:13 AM CST	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend, Harris	32 min
Feb 14, 9:21 AM CST	Severe Thunderstorm Warning	HGX	Brazoria, Galveston, Matagorda	39 min
Feb 14, 9:24 AM CST	Tornado Warning	HGX	Brazoria	36 min
Feb 14, 9:35 AM CST	Areal Flood Advisory	HGX	Harris, Liberty	115 min
Feb 14, 9:43 AM CST	Severe Thunderstorm Warning	HGX	Liberty, Polk	47 min
Feb 14, 9:56 AM CST	Tornado Warning	HGX	Brazoria, Galveston	34 min
Feb 14, 9:57 AM CST	Severe Thunderstorm Warning	HGX	Chambers, Galveston, Harris, Liberty, Polk	63 min
Feb 14, 10:22 AM CST	Severe Thunderstorm Warning	HGX	Chambers, Galveston	53 min
Feb 14, 10:28 AM CST	Special Marine Warning	HGX		2 hr
Feb 14, 3:51 PM CST	Small Craft Advisory	HGX		20 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2017 Every severe thunderstorm warning 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.