SPC MD 1580

MD 1580 CONCERNING TORNADO WATCH 414… FOR PART OF CENTRAL AND EASTERN TX

MD 1580 Image


Mesoscale Discussion 1580
NWS Storm Prediction Center Norman OK
0741 PM CDT Sat Oct 13 2018

Areas affected...Part of central and eastern TX

Concerning...Tornado Watch 414...

Valid 140041Z - 140145Z

The severe weather threat for Tornado Watch 414 continues.

SUMMARY...Local extension (both spatial and temporal) may be needed
for the southwest part of WW 414 and extending southward several
counties, as a severe-weather threat persists beyond 01Z, including
the tornado potential.

DISCUSSION...Mosaic radar imagery showed storms continuing to
develop within the the southwest flank of a central and northeast TX
MCS, while GOES-16 IR imagery indicated ongoing cloud-top cooling
across this same area of the MCS.  Although the main band of storms
appears to be located along and near the primary southward-moving
outflow boundary, radar trends also indicated new storms developing
in the warm sector, immediately to the south, from Burleson to
Brazos to Madison Counties.  Objective analyses indicated
surface-based inhibition has been increasing, given time of day
across east TX into LA, though the environment in proximity to the
aforementioned storms remains unstable with surface-based storms.

Given the presence of a moisture-rich environment with moderate
instability and effective bulk shear of 40-45 kt, embedded bowing
structures and low-level rotation/tornado threat should persist
until the surface-based inhibition becomes too strong.

..Peters/Guyer.. 10/14/2018

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

ATTN...WFO...SHV...HGX...FWD...

LAT...LON   30769657 31099580 31579529 31779461 31809422 31299431
            31049470 30689489 30369556 30199614 30159656 30589670
            30769657 

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