Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 10, NWS Midland/Odessa, TX

September 16, 2011Brewster County, Jeff Davis County, Pecos County, Texas

NWS Midland/Odessa, TX issued this tornado warning at Sep 16, 2011, 5:44 PM CDT for Brewster County, Jeff Davis County, Pecos County, Texas. It was in force for 61 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
Sep 16, 2011, 5:44 PM CDT (22:44 UTC)
Expired
Sep 16, 2011, 6:45 PM CDT
In force
61 min
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon

Counties Brewster County, TX, Jeff Davis County, TX, Pecos County, TX

The radar

The Midland/Odessa radar (KMAF), 171 km from the middle of the area, began a volume at 22:45 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

Midland Regional, TX (KMAF), launched 12:00Z, 10.7 hours before the alert went out and 172 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, Midland Regional, TX at 12:00Z on 2011-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 272 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, Midland Regional, TX at 12:00Z on 2011-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 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
272 J/kg
Mixed-layer CIN
-83 J/kg
Mixed-layer LCL
722 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
192 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

042 
WFUS54 KMAF 162244
TORMAF
TXC043-243-371-162345-
/O.NEW.KMAF.TO.W.0010.110916T2244Z-110916T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
544 PM CDT FRI SEP 16 2011

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL PECOS COUNTY IN SOUTHWEST TEXAS...
  NORTH CENTRAL BREWSTER COUNTY IN SOUTHWEST TEXAS...
  EXTREME EAST CENTRAL JEFF DAVIS COUNTY IN SOUTHWEST TEXAS...

* UNTIL 645 PM CDT

* AT 541 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR 
  HOVEY...OR 29 MILES NORTHEAST OF ALPINE...MOVING SOUTHEAST AT 20 
  MPH. LOCAL LAW ENFORCEMENT IS MONITORING THIS STORM FOR TORNADO 
  DEVELOPMENT.  BASEBALL SIZE HAIL IS POSSIBLE WITH THIS STORM.

* THE TORNADO WILL AFFECT THE FOLLOWING LOCATIONS...
  WESTERN PECOS COUNTY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO MAY FORM AT ANY TIME... TAKE COVER NOW. ABANDON MOBILE
HOMES AND VEHICLES FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS.

EVACUATE MOBILE HOMES AND SEEK SAFETY IN A STURDY REINFORCED BUILDING
OR AN UNDERGROUND SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN
THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR
HANDS.

&&

LAT...LON 3072 10298 3041 10316 3066 10348 3083 10342
TIME...MOT...LOC 2244Z 300DEG 16KT 3066 10333

$$
2 follow-up statements
599 
WWUS54 KMAF 162302
SVSMAF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
602 PM CDT FRI SEP 16 2011

TXC043-243-371-162345-
/O.CON.KMAF.TO.W.0010.000000T0000Z-110916T2345Z/
PECOS TX-BREWSTER TX-JEFF DAVIS TX-
602 PM CDT FRI SEP 16 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR EXTREME
EAST CENTRAL JEFF DAVIS...NORTH CENTRAL BREWSTER AND WEST CENTRAL
PECOS COUNTIES...

AT 559 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS 
STORM WAS LOCATED 9 MILES EAST OF HOVEY...OR ABOUT 26 MILES SOUTHWEST
OF FORT STOCKTON...MOVING SOUTHEAST AT 20 MPH.  HAIL UP TO BASEBALL 
SIZE IS ALSO POSSIBLE WITH THIS STORM.

SOME LOCATIONS AFFECTED BY THE TORNADO INCLUDE...WEST CENTRAL PECOS
COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO MAY FORM AT ANY TIME... TAKE COVER NOW. ABANDON MOBILE
HOMES AND VEHICLES FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS.

IF YOU ARE CAUGHT OUTSIDE... SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT... SEEK SHELTER IN A CULVERT... DITCH OR
LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3072 10298 3041 10316 3066 10348 3083 10342
TIME...MOT...LOC 2301Z 300DEG 16KT 3063 10319

$$
445 
WWUS54 KMAF 162333
SVSMAF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
633 PM CDT FRI SEP 16 2011

TXC043-243-371-162345-
/O.CON.KMAF.TO.W.0010.000000T0000Z-110916T2345Z/
PECOS TX-BREWSTER TX-JEFF DAVIS TX-
633 PM CDT FRI SEP 16 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR EXTREME
EAST CENTRAL JEFF DAVIS...NORTH CENTRAL BREWSTER AND WEST CENTRAL
PECOS COUNTIES...

AT 627 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
DETECT A THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS STORM WAS 
LOCATED 16 MILES EAST OF HOVEY...OR ABOUT 24 MILES SOUTHWEST OF FORT 
STOCKTON...MOVING SOUTHEAST AT 20 MPH.  GOLFBALL SIZE HAIL IS ALSO
POSSIBLE WITH THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO MAY FORM AT ANY TIME... TAKE COVER NOW. ABANDON MOBILE
HOMES AND VEHICLES FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS.

IF YOU ARE CAUGHT OUTSIDE... SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT... SEEK SHELTER IN A CULVERT... DITCH OR
LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3072 10298 3041 10316 3066 10348 3083 10342
TIME...MOT...LOC 2332Z 300DEG 16KT 3058 10305

$$

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 15, 9:18 PM CDTSevere Thunderstorm WarningMAFJeff Davis43 min
Sep 16, 4:50 PM CDTSevere Thunderstorm WarningMAFPecos55 min
Sep 16, 5:13 PM CDTTornado WarningMAFPecos32 min
Sep 16, 6:46 PM CDTSevere Thunderstorm WarningMAFBrewster, Pecos59 min

Nearby

Tornado Warnings in Texas, 2011Every tornado warning in 2011Tornadoes in 2011

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.