Mesoscale Discussion 356

Issued

Mar 28, 2017, 2:44 PM CDT (19:44 UTC)

Expired

Mar 28, 2017, 4:45 PM CDT

In force

2 hr

Issued by

the Storm Prediction Center

The Altus AFB radar (KFDR), 131 km from the middle of the area, began a volume at 19:44 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.

• Tornado Watch 95Mar 28, 3:35 PM CDT

916 
ACUS11 KWNS 281944
SWOMCD
SPC MCD 281944 
OKZ000-TXZ000-282145-

Mesoscale Discussion 0356
NWS Storm Prediction Center Norman OK
0244 PM CDT Tue Mar 28 2017

Areas affected...Northwest Texas...Eastern Texas Panhandle...Western
Oklahoma

Concerning...Severe Thunderstorm Watch 93...

Valid 281944Z - 282145Z

The severe weather threat for Severe Thunderstorm Watch 93
continues.

SUMMARY...The severe threat located across the central part of WW 93
is expected to continue late this afternoon and should spread
eastward across the remainder of the Texas Panhandle. A threat for
large hail and wind damage will exist with the stronger
thunderstorms with the threat affecting western Oklahoma later this
afternoon. A potential for tornadoes may also develop in the
southeastern part of WW 93. WW issuance may be needed across parts
of western Oklahoma by 21Z.

DISCUSSION...The latest radar imagery shows a line of strong
thunderstorms extending from south to north across the central Texas
Panhandle with another line to the east of Lubbock. This activity is
located along the western edge of a 30 to 45 kt low-level jet which
has increased in strength over the last few hours. This combined
with lift associated with a band of large-scale ascent moving
eastward across the southern high Plains should aide a gradual ramp
up in storm intensity late this afternoon. The environment ahead of
this convection is characterized by moderate instability, steep
mid-level lapse rates and strong deep-layer shear (as evidenced on
several regional WSR-88D VWPs). This should support supercell
development especially across the southeastern part of WW 93 near a
warm front in the vicinity of Childress and southeastward across
northwest Texas. As cells interact with the warm front later this
afternoon, a tornado threat and potential for isolated very large
hail will also be possible. This threat may extend eastward into
parts of far southwestern Oklahoma along the Red River. Further
north across much of west-central and northwestern Oklahoma, the
storms should remain elevated but isolated large hail and a few
damaging wind gusts will be possible.

..Broyles.. 03/28/2017

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...FWD...OUN...SJT...LUB...AMA...

LAT...LON   36839888 36940043 36500130 35660151 34590146 33960140
            33220111 32930046 32899971 33449887 35489868 36839888

Mesoscale Discussions in Texas, 2017Mesoscale Discussions in Oklahoma, 2017Every mesoscale discussion in 2017

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.