SPC MD 1608



MD 1608 CONCERNING TORNADO WATCH 418… FOR LA…SOUTHEAST AR

MD 1608 Image

Mesoscale Discussion 1608
NWS Storm Prediction Center Norman OK
1152 PM CDT Wed Oct 31 2018

Areas affected...LA...Southeast AR

Concerning...Tornado Watch 418...

Valid 010452Z - 010545Z

The severe weather threat for Tornado Watch 418 continues.

SUMMARY...Tornado threat continues across the southeastern half of
ww418.

DISCUSSION...Mature squall line has evolved along the front as it
advances into the lower MS Valley. This band of frontal convection
is moving east at roughly 25-30kt and should progress across the
remainder of ww418 over the next few hours.

Ahead of the squall line, small cluster of supercells that formed
over the upper TX Coastal Plain has migrated into central LA and has
yet to be overtaken by the squall line. Long-lived tornadic
supercell is moving across Rapides Parish toward southeast
Grant/southern La Salle Parish. This storm appears to be influenced
by a corridor of focused low-level warm advection that should lift
into western MS over the next few hours along with an increasing
tornadic potential.

..Darrow.. 11/01/2018

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

ATTN...WFO...JAN...LIX...LZK...LCH...SHV...

LAT...LON   29819386 33439322 33459113 29829185 29819386 

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