Severe Storm Outlook Narrative (AC)
Issued by NWS

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000
ACUS11 KWNS 270844
SWOMCD
SPC MCD 270844
UTZ000-AZZ000-NVZ000-CAZ000-271045-

MESOSCALE DISCUSSION 1768
NWS STORM PREDICTION CENTER NORMAN OK
0344 AM CDT SAT SEP 27 2014

AREAS AFFECTED...PARTS OF SERN AND ERN NV...SWRN UT...NWRN AZ...AND
ADJACENT SERN CA

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 270844Z - 271045Z

PROBABILITY OF WATCH ISSUANCE...60 PERCENT

SUMMARY...STORMS INCREASING ACROSS THE DESERT SW THIS MORNING WILL
INCREASINGLY BECOME CAPABLE OF LOCAL HAIL AND GUSTY/DAMAGING WINDS
ALONG WITH ISOLATED TORNADOES.  WW MAY BE REQUIRED IN THE NEXT HOUR
OR SO.

DISCUSSION...LATEST WV IMAGERY SHOWS INCREASING LARGE-SCALE ASCENT
SPREADING EWD ACROSS ERN NV AND SERN CA INTO ADJACENT UT/AZ
ATTM....AHEAD OF THE UPPER LOW NOW CENTERED OVER THE CA CENTRAL
VALLEY E OF SFO.  A MOIST AIRMASS /SURFACE DEWPOINTS RANGING FROM
THE MID 50S TO MID 60S AND BLENDED TPW IN EXCESS OF 1"/ REMAINS IN
PLACE AHEAD OF THE CENTRAL NV TO SERN CA COLD FRONT...CONTRIBUTING
TO MIXED-LAYER CAPE IN THE 500 TO 1000 J/KG RANGE PER OBJECTIVE
ANALYSES.

WITH THE STRONGER ASCENT NOW BEGINNING TO SPREAD ATOP THE AXIS OF
GREATEST MOISTURE/INSTABILITY...ONGOING SHOWERS AND STORMS ACROSS
THE DISCUSSION AREA HAVE SHOWN A NOTED INCREASE OVER THE PAST HOUR.
WITH THIS TREND TO CONTINUE -- WITHIN A BACKGROUND KINEMATIC
ENVIRONMENT FEATURING FAVORABLY STRONG/INCREASING FLOW WITH
HEIGHT...A FEW ROTATING STORMS/SMALL-SCALE BOWS WILL LIKELY EVOLVE
OVER THE NEXT FEW HOURS...WITH ASSOCIATED SEVERE RISK POSSIBLY
REQUIRING WW ISSUANCE WITHIN THE NEXT HOUR.

..GOSS/CORFIDI.. 09/27/2014

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...FGZ...SLC...VEF...LKN...

LAT...LON   39601408 39571271 38411250 35741275 34361301 34371520
            36151482 38421582 39521530 39601408




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