Severe Storm Outlook Narrative (AC)
Issued by NWS

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000
ACUS01 KWNS 091559
SWODY1
SPC AC 091558

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0958 AM CST Fri Dec 09 2016

Valid 091630Z - 101200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
The risk for severe storms appears negligible across the U.S. today
through tonight.

...SYNOPSIS...
Although cold surface ridging will remain prominent across most
areas east of the Rockies through this period, mid/upper flow has
trended more zonal within a belt from the mid-latitude eastern
Pacific through the Mid Atlantic Coast and western Atlantic. One
significant, but increasingly deformed/sheared impulse within this
regime will begin developing inland across the Pacific Northwest
coast later today.  Associated pockets of colder air aloft and
large-scale forcing for ascent, in conjunction with relatively moist
low-level onshore flow, are expected to contribute to convective
development occasionally capable of generating lightning, mainly
west of the Washington Cascades.  Otherwise, thunderstorm
probabilities elsewhere across the U.S. appear negligible.

..Kerr/Mosier.. 12/09/2016

$$



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