Alert archive / Texas / Tornado Warnings in 2015

Tornado Warning 13, NWS Houston/Galveston, TX

May 6, 2015Burleson County, Washington County, Texas

NWS Houston/Galveston, TX issued this tornado warning at May 6, 2015, 4:52 AM CDT for Burleson County, Washington County, Texas. It was in force for 23 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: May 6, 2015, 4:52 AM CDT (09:52 UTC)
Expired: May 6, 2015, 5:15 AM CDT
In force: 23 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon

Counties Burleson County, TX, Washington County, TX

The radar

The Ft Hood radar (KGRK), 96 km from the middle of the area, began a volume at 09:52 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

Fort Worth, TX (KFWD), launched 00:00Z, 9.9 hours before the alert went out and 290 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: 1109 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 942 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 7.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

296 
WFUS54 KHGX 060952
TORHGX
TXC051-477-061015-
/O.NEW.KHGX.TO.W.0013.150506T0952Z-150506T1015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
452 AM CDT WED MAY 6 2015

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY  HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN BURLESON COUNTY IN SOUTHEASTERN TEXAS...
  NORTH CENTRAL WASHINGTON COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 515 AM CDT
    
* AT 451 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  OVER LAKE SOMERVILLE DAM...OR 14 MILES NORTHWEST OF BRENHAM...AND
  MOVING EAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SOMERVILLE...LAKE SOMERVILLE DAM...INDEPENDENCE AND LYONS. 

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 IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3028 9661 3039 9659 3042 9633 3021 9636
TIME...MOT...LOC 0951Z 267DEG 15KT 3032 9656 

$$

LW

1 follow-up statement

904 
WWUS54 KHGX 061006
SVSHGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
506 AM CDT WED MAY 6 2015

TXC051-477-061015-
/O.CON.KHGX.TO.W.0013.000000T0000Z-150506T1015Z/
BURLESON TX-WASHINGTON TX-
506 AM CDT WED MAY 6 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 AM CDT FOR
SOUTHEASTERN BURLESON AND NORTH CENTRAL WASHINGTON COUNTIES...
    
AT 504 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED OVER LAKE
SOMERVILLE DAM...OR 11 MILES NORTHWEST OF BRENHAM...MOVING EAST AT 15
MPH. GOLFBALL SIZED HAIL AND WIND GUSTS AROUND 60 MPH ARE POSSIBLE WITH 
THIS STORM. 

LOCATIONS IMPACTED INCLUDE...
SOMERVILLE...LAKE SOMERVILLE DAM...INDEPENDENCE AND LYONS. 

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 IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3028 9661 3039 9659 3042 9633 3021 9636
TIME...MOT...LOC 1004Z 275DEG 14KT 3031 9650 

$$

LW

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 2:57 AM CDT	River Flood Warning	HGX	Burleson, Lee	4 days
May 6, 3:49 AM CDT	Special Weather Statement	HGX	Burleson	41 min
May 6, 4:18 AM CDT	Tornado Warning	HGX	Burleson	42 min
May 6, 5:14 AM CDT	Severe Thunderstorm Warning	HGX	Brazos, Burleson, Grimes, Waller, Washington	27 min
May 6, 5:28 AM CDT	Areal Flood Advisory	HGX	Burleson, Washington	2 hr
May 6, 6:21 AM CDT	Flash Flood Warning	HGX	Burleson	114 min
May 6, 7:07 AM CDT	Flash Flood Warning	HGX	Brazos, Burleson, Washington	83 min
May 6, 7:57 AM CDT	Areal Flood Advisory	HGX	Brazos, Burleson, Grimes, Waller, Washington	2 hr
May 6, 8:33 AM CDT	Areal Flood Advisory	HGX	Brazos, Burleson, Washington	117 min
May 6, 8:51 AM CDT	Areal Flood Advisory	HGX	Austin, Waller, Washington	114 min
May 6, 9:03 AM CDT	River Flood Warning	HGX	Burleson, Washington	32 hr
May 6, 10:37 AM CDT	Flash Flood Warning	HGX	Waller	113 min

Nearby

Tornado Warnings in Texas, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.