SWOMCD
SPC MCD 142302
UTZ000-150000-
MESOSCALE DISCUSSION 2016
NWS STORM PREDICTION CENTER NORMAN OK
0602 PM CDT MON SEP 14 2009
AREAS AFFECTED...UT
CONCERNING...SEVERE THUNDERSTORM WATCH 741...
VALID 142302Z - 150000Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 741
CONTINUES.
SVR TSTM WATCH 741 IS SET TO EXPIRE AT 00Z. LOCAL WFO EXTENSION OF
THE WW MAY BE POSSIBLE.
WATER VAPOR IMAGERY SHOWS A POTENT PV-ANOMALY ROTATING NEWD ACROSS
THE SALT FLATS/DESERTS OF NWRN UT AND IS AIDING IN THE RECENT
INTENSIFICATION OF TSTMS OVER THE GREAT SALT LAKE. THIS NARROW LINE
OF STRONG CONVECTION WILL TRANSLATE ENE ACROSS THE I-15 CORRIDOR AND
INTO THE NRN WASATCH FRONT/MOUNTAINS AND THE CACHE VLY THROUGH 00Z.
SOME WEAKENING IS LIKELY AS THE ACTIVITY BECOMES REMOVED FROM THE
SLIGHTLY STRONGER BUOYANCY NOTED INVOF THE GREAT SALT LAKE.
BUT...STRONG/SVR WINDS COULD OCCUR.
MEANWHILE...WARM CONVEYOR ASSOCD WITH THE NV UPR SYSTEM CONTINUES TO
SPREAD SLOWLY EWD ACROSS THE ERN UINTA BASIN...SAN RAFAEL SWELL AND
CNTRL MOUNTAINS. EMBEDDED WITHIN THIS ENHANCED SLY MID-LVL FLOW
WERE SEVERAL SUSTAINED ROTATING CELLS CAPABLE OF LARGE HAIL AND DMGG
WIND GUSTS. THIS ACTIVITY WILL PROBABLY WEAKEN GRADUALLY THROUGH
EARLY THIS EVE BEFORE REACHING THE CO/WY BORDERS AS THE PRIMARY
FORCING FOR ASCENT ROTATES NWD TOWARD WRN WY/ERN ID.
..RACY.. 09/14/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...SLC...
LAT...LON 38521323 40221255 41811322 41771134 40921121 40671030
39701019 38581042 37961065 37691118 37781306 38521323
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