Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 239, NWS Lubbock, TX

November 16, 2015Swisher County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Nov 16, 2015, 4:35 PM CST for Swisher County, Texas. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Nov 16, 2015, 4:35 PM CST (22:35 UTC)
Expired
Nov 16, 2015, 5:00 PM CST
In force
25 min
Issued by
NWS Lubbock, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Swisher County, TX

The radar

The Amarillo radar (KAMA), 78 km from the middle of the area, began a volume at 22:38 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
Nov 16, 1:00 PM CSTTornado WatchSPC8 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.6 hours before the alert went out and 78 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, Amarillo Airport, TX at 12:00Z on 2015-11-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Amarillo Airport, TX at 12:00Z on 2015-11-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
867 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lubbock, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 16, 2:48 PM CST, 1 hour 47 minutes earlier.

Area forecast discussion, Nov 16, 2:48 PM CST, 1 hour 47 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
248 PM CST MON NOV 16 2015

.SHORT TERM...
EARLY ISOLATED TO SCATTERED CONVECTION WRN NM...WRN SOUTH
PLAINS...AND WRN PANHANDLE GENERALLY HAVING DIFFICULTY
STRENGTHENING. EVOLUTION PER RADAR SUGGESTS SHEAR OVERCOMING
MODEST INSTABILITY RESULTING IN STORMS UNABLE TO MAINTAIN THEIR
UPDRAFTS. THIS MAY CHANGE OVER THE NEXT SEVERAL HOURS AS LIFT
MOVES OVER AREA OF RICHER LOW LEVEL MOISTURE. DEW POINT TEMPS IN
THE MIDDLE 50S TO LOWER 60S ALONG AND EAST OF I-27. THIS WILL KEEP
A WINDOW OPEN NOT JUST FOR CONVECTION TO BECOME MORE NUMEROUS BUT
THE POTENTIAL FOR SEVERE WEATHER TO DEVELOP. HOWEVER...THAT WINDOW
WILL BEGIN TO SHUT WITH SUNSET AS INSTABILITY DECREASES WITH
COOLER TEMPERATURES. PERSISTENT LOW LEVEL MOISTURE ADVECTION ON
STIFF SOUTH WINDS AS WELL AS INCREASING DEEP LAYER ASCENT FROM
APPROACH OF THE VERY STRONG SYSTEM WILL KEEP CHANCES FOR
CONVECTION ONGOING UNTIL PACIFIC FRONT SWEEPS EAST OF THE FCST
AREA...LIKELY AROUND MIDNIGHT. PREVIOUS FCST HANDLES WELL WITH
ONLY SOME MINOR ADJUSTMENTS NEEDED ATTM.

FOCUS THEN SHIFTS TO WIND POTENTIAL ON TUESDAY. MID LEVEL CLOSED
LOW WILL MOVE FROM THE NWRN PANHANDLE AT 12Z TO NWRN OKLA AND
SCNTL/SWRN KS BY END OF DAY. HEIGHT GRADIENT SOUTH OF THE LOW AND
MAGNITUDE OF PROGGED MID LEVEL JET STREAK ROUNDING THE BASE OF THE
700 MB TROUGH SUPPORT WARNING CRITERIA. HOWEVER WITH LOW TO MID
LEVEL COLD ADVECTION DO NOT EXPECT MIXING TO BE TERRIBLY
EFFICIENT. THIS SETUP IS NOT TOO DIFFERENT FROM LAST WEEK. MOST
LIKELY OUTCOME IS SUSTAINED WIND SPEEDS OF 25 TO 30 MPH WITH SOME
PERIODS UP TO 35 MPH...PARTICULARLY ACROSS THE NRN HALF OF THE
FCST AREA.

FINALLY...WINDS WILL REMAIN GUSTY THROUGH THE EVENING...ALTHOUGH
LIKELY DECREASING A BIT WITH SUNSET. WINDS HAVE CONSISTENTLY BEEN
JUST OVER THE 30 MPH MARK ACROSS THE NWRN ZONES WHERE A WIND
ADVISORY IS IN EFFECT UNTIL 5 PM. WILL CONTINUE WITH THE ADVISORY
ATTM WITH THE LIKELIHOOD THAT IT WILL BE ALLOW TO EXPIRE ON TIME.

.LONG TERM...
AFTER AN EVENTFUL START TO THE WEEK...QUIET WEATHER WILL BE IN
STORE IN THE LONG TERM. NORTH TO NORTHWESTERLY FLOW WILL BE IN PLACE
AT THE SURFACE BY TUES NIGHT AS AN UPPER AND SURFACE LOW PASS TO OUR
NORTHEAST. THIS WILL BE THE FIRST OF A GRADUAL COOL DOWN AS HIGHS
TREND NEAR TO BELOW SEASONAL AVERAGE. A SECOND AND MORE STOUT COLD
FRONT WILL PUSH THROUGH THE REGION FRI EVENING/SAT MORNING WHICH
WILL MAKE WAY FOR A COLD SUNDAY. MOST AREAS AS OF NOW ARE EXPECTED
TO SEE TEMPS AT OR BELOW FREEZING BY SUNDAY MORNING THANKS TO A
SURFACE HIGH HELPING TO COOL DOWN ALREADY COLD TEMPS.

BY NEXT WEEK A DEEP UPPER LOW WILL BEGIN TO TAKE SHAPE ACROSS THE
PACIFIC NORTHWEST WHILE A SURFACE LEE TROF DEVELOPS TO OUR NORTHWEST
HELPING TO KEEP WINDS OUT OF THE SOUTH TO SOUTHWEST. THIS WILL ALLOW
A SLIGHT WARMING TREND IN TEMPS...THOUGH TEMPS SHOULD STILL REMAIN
CLOSE TO SEASONAL AVERAGE.

&&

.LUB WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY UNTIL 5 PM CST THIS AFTERNOON FOR TXZ021-022-027.

&&

07/51
Hazardous weather outlook, Nov 16, 11:12 AM CST, 5 hours 23 minutes before
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The office that day

Everything else NWS Lubbock, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 16, 4:18 AM CSTWind AdvisoryLUBBailey, Castro, Parmer13 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2015Every severe thunderstorm warning 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.