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Mesoscale Discussion 0567
NWS Storm Prediction Center Norman OK
0531 PM CDT Mon May 11 2020
Areas affected...Parts of northeastern New Mexico...Texas Panhandle
and South Plains...adjacent western Oklahoma
Concerning...Severe potential...Watch possible
Valid 112231Z - 120030Z
Probability of Watch Issuance...60 percent
SUMMARY...A southeastward advancing line of storms may continue to
gradually intensify and organize while spreading into and across the
Texas Panhandle vicinity through 8-10 PM. A severe weather watch
seems probable at some point, although it remains uncertain how
soon.
DISCUSSION...An arcing line of thunderstorms continues to evolve and
spread southeastward away from the Sangre de Cristo Mountains. This
appears to be on the southern periphery of a mid-level short wave
trough now digging east of the Colorado/northern New Mexico Rockies.
Activity appears to be advancing through a narrow corridor of
stronger boundary layer heating, which has contributed to some
recent intensification, but low-level moisture and CAPE are fairly
modest.
Better low-level moisture return on southerly low-level flow across
the Texas South Plains is contributing to more substantive
mixed-layer CAPE as far north as a remnant stalled frontal zone/zone
of stronger differential surface heating, near/north of the Lubbock
area. The baroclinic zone extends northwestward toward the Raton
Mesa vicinitiy, and low-level warm advection along/above the cooler
boundary-layer air to the north of the front may contribute to a
continued gradual upscale convective growth and intensification of
the southeastward advancing ongoing line of storms into early
evening.
Although CAPE along/above the front north-northwest of Lubbock may
be more modest, strengthening southeasterly low-level flow beneath
northwesterly mid-level flow will contribute to strong deep-layer.
This will provide support for increasing convective organization
which may be accompanied by increasing potential for strong surface
gusts across at least southern portions of the Texas Panhandle
through 01-03Z, much as recently depicted by the High Resolution
Rapid Refresh.
..Kerr/Grams.. 05/11/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...OUN...LUB...AMA...ABQ...
LAT...LON 36180278 36960251 36590164 35680054 34589977 33729992
33170052 33040222 33610288 34270348 34800424 35250355
36180278
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