Alert archive / Texas / Tornado Warnings in 2016

Tornado Warning 13, NWS Houston/Galveston, TX

April 27, 2016Liberty County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Apr 27, 2016, 5:54 AM CDT for Liberty County, Texas. It was in force for 21 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
Apr 27, 2016, 5:54 AM CDT (10:54 UTC)
Expired
Apr 27, 2016, 6:15 AM CDT
In force
21 min
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Liberty County, TX

The radar

The Houston radar (KHGX), 83 km from the middle of the area, began a volume at 10:54 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
Apr 26, 10:21 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 10.9 hours before the alert went out and 132 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, Lake Charles Mun, LA at 00:00Z on 2016-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1519 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 2016-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -62 square meters per square second.193958Sfc1 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
1519 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
858 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-62 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
-0.2
Supercell composite
-2.7

Open this sounding in Storm Lab

The text

As transmitted.

047 
WFUS54 KHGX 271054
TORHGX
TXC291-271115-
/O.NEW.KHGX.TO.W.0013.160427T1054Z-160427T1115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
554 AM CDT WED APR 27 2016

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN LIBERTY COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 615 AM CDT
    
* AT 554 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
  WAS LOCATED NEAR DEVERS...OR 8 MILES WEST OF NOME...MOVING EAST AT 45
  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. 

* LOCATIONS IMPACTED INCLUDE...
  DAISETTA AND DEVERS. 

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.

&&

LAT...LON 2999 9464 3017 9463 3017 9462 3011 9460
      3011 9444 2997 9445
TIME...MOT...LOC 1054Z 273DEG 38KT 3008 9454 

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

$$
1 follow-up statement
817 
WWUS54 KHGX 271113
SVSHGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
613 AM CDT WED APR 27 2016

TXC291-271122-
/O.EXP.KHGX.TO.W.0013.000000T0000Z-160427T1115Z/
LIBERTY TX-
613 AM CDT WED APR 27 2016

...THE TORNADO WARNING FOR SOUTHEASTERN LIBERTY COUNTY WILL EXPIRE AT
615 AM CDT...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT
OF THE WARNED AREA. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 AM CDT FOR
SOUTHEASTERN TEXAS.

LAT...LON 2999 9464 3017 9463 3017 9462 3011 9460
      3011 9444 2997 9445
TIME...MOT...LOC 1110Z 273DEG 38KT 3008 9454 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 1:49 AM CDTSpecial Weather StatementHGXHouston56 min
Apr 27, 2:40 AM CDTSpecial Weather StatementHGXHouston, Madison65 min
Apr 27, 3:09 AM CDTSpecial Weather StatementHGXHouston36 min
Apr 27, 3:18 AM CDTSpecial Weather StatementHGXBrazos, Burleson, Grimes, Madison57 min
Apr 27, 3:35 AM CDTSpecial Weather StatementHGXHouston25 min
Apr 27, 3:42 AM CDTSevere Thunderstorm WarningHGXHouston, Trinity, Walker33 min
Apr 27, 3:51 AM CDTSevere Thunderstorm WarningHGXBrazos, Grimes, Houston, Madison, Walker39 min
Apr 27, 4:08 AM CDTSpecial Weather StatementHGXAustin, Grimes, Waller52 min
Apr 27, 4:12 AM CDTSpecial Weather StatementHGXTrinity48 min
Apr 27, 4:25 AM CDTSevere Thunderstorm WarningHGXAustin, Brazoria, Fort Bend, Harris, Liberty, Montgomery and 4 more65 min
Apr 27, 4:26 AM CDTSevere Thunderstorm WarningHGXHouston, Madison, Polk, San Jacinto, Trinity, Walker49 min
Apr 27, 4:29 AM CDTSevere Thunderstorm WarningHGXHouston, Polk, Trinity46 min
Apr 27, 4:36 AM CDTTornado WarningHGXHarris, Montgomery24 min
Apr 27, 4:50 AM CDTTornado WarningHGXLiberty, Montgomery, San Jacinto25 min
Apr 27, 5:03 AM CDTSpecial Marine WarningHGX117 min
Apr 27, 5:12 AM CDTSevere Thunderstorm WarningHGXChambers, Harris, Liberty, Montgomery, Polk, San Jacinto and 1 more48 min
Apr 27, 5:17 AM CDTCoastal Flood AdvisoryHGXGalveston9 hr
Apr 27, 5:18 AM CDTSevere Thunderstorm WarningHGXBrazoria, Chambers, Fort Bend, Galveston, Harris, Liberty57 min
Apr 27, 5:20 AM CDTTornado WarningHGXPolk, San Jacinto25 min
Apr 27, 5:33 AM CDTSpecial Weather StatementHGXHarris, Montgomery, San Jacinto42 min
Apr 27, 5:51 AM CDTSevere Thunderstorm WarningHGXChambers, Galveston, Liberty54 min
Apr 27, 6:08 AM CDTSevere Thunderstorm WarningHGXBrazoria, Galveston37 min
Apr 27, 6:12 AM CDTSpecial Weather StatementHGXLiberty, Polk, San Jacinto, Trinity63 min
Apr 27, 6:50 AM CDTSpecial Marine WarningHGX115 min
Apr 27, 8:36 AM CDTSpecial Marine WarningHGX54 min

Nearby

Tornado Warnings in Texas, 2016Every tornado warning in 2016Tornadoes in 2016

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.