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FNUS21 KWNS 231645

Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1145 AM CDT Fri Jun 23 2017

Valid 231700Z - 241200Z

A plume of midlevel tropical moisture, and associated elevated
buoyancy, will elongate northward near the Pacific Coast -- along
the western flank of a building ridge. Any impulses embedded within
the nebulously defined moisture stream should remain offshore, where
a few lightning strikes could occur. Also, a few sporadic lightning
strikes, accompanied by minimal precipitation, cannot be ruled out
onshore over coastal central/southern CA later today into tonight.
However, abundant capping and limited deep ascent should minimize
inland thunderstorm potential, such that dry-thunderstorm highlights
have not been included.

Otherwise, no changes have been made to the ongoing forecast.

..Cohen.. 06/23/2017

.PREV DISCUSSION... /ISSUED 0145 AM CDT Fri Jun 23 2017/

Cyclonic flow aloft currently in place across the northern third of
the CONUS will be maintained throughout the period as a series of
shortwave troughs -- one currently moving through the northern
Rockies and the other moving through the upper midwest -- progress
through its base. Upper ridge extending from the Southwest
northwestward to off the Pacific Northwest coast will remain largely
unchanged. At the surface, a cold front will sweep
southeastward/southward into the southern Plains and middle MS
valley. Remnant of Tropical Storm Cindy will move into the lower OH
river valley by the early afternoon before ejecting quickly
northeastward as it interacts with the frontal boundary. Farther
west, aforementioned cold front will move through eastern NM while
the remaining portion of the Southwest and Great Basin remain hot
and dry. Isolated thunderstorms are possible across the higher
terrain of central NM but slow storm motion and precipitable water
values greater than 0.90" should result in wetting rains.

...Mountains and western foothills of Kern, Los Angeles and San
Bernardino counties in Southern CA...
LAX-DAG gradient will likely be around 5 to 6 mb tomorrow afternoon,
helping to foster some breezy westerly winds throughout the higher
terrain and western foothills of Kern, Los Angeles, and San
Bernardino counties. Warm and dry conditions are also expected with
minimum RH values in the low teens. These windy and dry conditions
amidst dry fuels will result in elevated to locally critical fire
weather conditions.

...Please see for graphic product...

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