000
ACUS11 KWNS 240027
SWOMCD
SPC MCD 240026
MSZ000-ARZ000-LAZ000-TXZ000-OKZ000-240230-

Mesoscale Discussion 1143
NWS Storm Prediction Center Norman OK
0726 PM CDT Fri Jun 23 2017

Areas affected...Southern AR...Far northeast TX...Far northern LA

Concerning...Severe Thunderstorm Watch 367...

Valid 240026Z - 240230Z

The severe weather threat for Severe Thunderstorm Watch 367
continues.

SUMMARY...Some isolated damaging wind gusts are possible for the
next few hours across southern AR and adjacent far northeast TX and
far northern LA . Anticipated limited and marginal nature of the
severe threat is expected to preclude the need for a downstream
watch.

DISCUSSION...Mesoscale convective system which has moved through AR
over the last several hours continues southward/southeastward into
southern AR and far northwest MS. Eastern portion of the system has
weakened considerably over the past hour as encountered the cloudy
and less unstable airmass over western TN and northwest MS. Western
portion of the system continues to forward propagate
southward/southwestward into the warm and unstable airmass of
south-central/southwest AR. Weak shear has prevent much organization
along this portion of the MCS with radar and satellite confirming
the outflow-dominant storm structures. This weakly organized,
outflow-dominant forward-propagation is expected to continue for at
least the next few hours as the downstream airmass remains
supportive of surface-based convection. Some isolated damaging wind
gusts are possible with these storms but the limited and marginal
nature of any severe threat precludes the need for a downstream
watch.

..Mosier.. 06/24/2017

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

ATTN...WFO...JAN...LZK...SHV...

LAT...LON   33879451 34129386 33809254 33569096 32709203 32979427
            33879451