625
FXUS65 KSLC 160228 CCA
AFDSLC
AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
827 PM MDT THU MAY 15 2008
SYNOPSIS
A COOL NORTHERLY FLOW TONIGHT WILL GIVE WAY TO A
WARMER AIRMASS AS A STRONG RIDGE ALOFT MOVES OVER THE AREA THIS
WEEKEND.
DISCUSSION
CLOUDS CONTINUE TO DISSIPATE THIS EVENING AS THE
UPPER LEVEL TROUGH PUSHES AWAY FROM THE REGION. WINDS WILL REMAIN
GUSTY AROUND CANYONS IN SOUTHWEST UTAH THIS EVENING INTO TONIGHT
BUT ARE EXPECTED TO REMAIN SUB-ADVISORY.
HIGH PRESSURE WILL BUILD INTO THE REGION FRIDAY AND REMAIN
ENTRENCHED ACROSS THE INTERIOR WEST THROUGH TUESDAY. BOTH THE GFS
AND THE EC BRING SOME SEMBLANCE OF A TROUGH THROUGH THE CWA
MIDWEEK...HOWEVER THE TIMING AND STRENGTH OF THE FEATURE IS VERY
DIFFERENT BETWEEN THE TWO. CONFIDENCE IN THE FORECAST AFTER
TUESDAY REMAINS LOW. THE FORECAST WAS ADJUSTED ON THE DAY SHIFT
TO NUDGE TOWARDS A COOLER AND MOISTER SOLUTION. THIS CONTINUES TO
BE THE BEST APPROACH UNTIL MORE INTER-MODEL AND RUN TO RUN
CONSISTENCY DEVELOPS.
HYDROLOGY
WARM WEATHER WILL BRING ON RISES IN THE RIVERS AND THIS
IS DESCRIBED IN DETAIL IN THE HYDROLOGIC OUTLOOK ISSUED TODAY. IF
MIDWEEK TROUGH PRODUCES SIGNIFICANT RAINFALL ON STREAMS ALREADY
SWOLLEN WITH SNOWMELT SOME FLOODING POSSIBLE....BUT THINGS WOULD
HAVE TO COME TOGETHER JUST RIGHT AND THIS IS NOT THE MOST PROBABLE
SOLUTION AT THIS TIME. BUT STAY TUNED.
AVIATION
NORTH TO NORTHWESTERLY WINDS WILL CONTINUE AT THE KSLC
TERMINAL THROUGH 04Z. WINDS WILL SHIFT TO THE SOUTH TO SOUTHEAST
BETWEEN 04-06Z TONIGHT. THERE IS A 20 PERCENT CHANCE WINDS WILL
NOT SHIFT UNTIL 08Z TONIGHT.
FIRE WEATHER
A TIGHTENING SURFACE GRADIENT AND MODERATE TO STRONG
WINDS ALOFT HAVE KEPT BREEZY NORTH WINDS ACROSS THE FORECAST AREA
THIS EVENING. HUMIDITIES WILL CONTINUE TO RISE THIS EVENING INTO
TONIGHT.
HIGH PRESSURE WILL MOVE OVER THE AREA FRIDAY INTO TUESDAY WITH A
STRONG WARMING AND DRYING TREND. ISOLATED MOUNTAIN THUNDERSTORMS
COULD DEVELOP IN THE AFTERNOONS STARTING SUNDAY AND CONTINUING
MONDAY AND TUESDAY.
SLC WATCHES/WARNINGS/ADVISORIES
UT...NONE.
WY...NONE.
KRUSE
FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
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