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FXUS65 KSLC 101059
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
359 AM MST WED FEB 10 2010
.SYNOPSIS...A LOW PRESSURE SYSTEM WILL MOVE EAST ACROSS SOUTHERN
ARIZONA TODAY...BRINGING CLOUDS AND LIGHT PRECIPITATION TO EXTREME
SOUTHERN UTAH. HIGH PRESSURE ALOFT WILL RETURN LATE IN THE WEEK...
AND REMAIN THE DOMINANT FEATURE ACROSS THE INTERIOR WEST THROUGH
THE WEEKEND.
&&
.DISCUSSION...THE WELL-DEFINED UPPER LOW CURRENTLY OFF THE EXTREME SRN
CA COAST WILL TRACK EAST INTO AND ACROSS SRN AZ THROUGH THIS EVENING.
DEFORMATION AXIS ASSOCIATED WITH THIS FEATURE WILL REMAIN NEAR THE
UT/AZ BORDER TODAY. PRECIP WILL REMAIN ALONG AND SOUTH OF THE
AXIS...LEAVING ONLY THE SRN TIER OF UTAH ZONES OPEN TO MEASURABLE
PRECIP. A SHORTWAVE RACING THROUGH THE NRN ROCKIES THIS EVENING
WILL CLIP FAR NRN UTAH. THIS FEATURE COULD PRODUCE LIGHT SNOW OVER
THE FAR NRN ZONES...THOUGH ANYTHING SUBSTANTIAL WILL LIKELY REMAIN
NORTH OF UTAH.
HIGH PRESSURE ALOFT WILL BECOME THE DOMINANT FEATURE ACROSS THE
INTERIOR WEST FOR THE BALANCE OF THE 7 DAY FORECAST BEGINNING
THURSDAY. A SERIES OF SHORTWAVES CRESTING THE RIDGE WILL FOCUS ON
THE PACIFIC NW/NRN ROCKIES...WITH THE SRN TAIL OF THESE FEATURES
CATCHING SW WY/NRN UTAH. LOOKING AT ENOUGH DYNAMIC LIFT AND MOISTURE
TO WARRANT A MENTION OF PRECIP WITH EACH AND ANY OF THESE SHORTWAVES
ACROSS THE FAR NRN ZONES FOR FRIDAY AND BEYOND. SHOULD RECEIVE
ENOUGH MIXING TO KEEP TEMPS AT OR ABOVE NORMAL FOR ALL BUT THE
EXTREME ERN VALLEYS DURING THE EXTENDED PERIOD. FOG NOT EXPECTED
TO BE MUCH A PROBLEM OUTSIDE OF THE EXTREME ERN VALLEYS AND A FEW
MOUNTAIN VALLEY LOCATIONS.
&&
.AVIATION...CEILINGS AT KSLC ARE EXPECTED TO GRADUALLY LOWER THIS
MORNING...FALLING BELOW 7000FT AGL BETWEEN 12-14Z. ANTICIPATE CIGS
WILL HOVER NEAR 6000FT AGL THROUGH THE REMAINDER OF THE DAY BEFORE
DISSIPATING LATE THIS EVENING. THAT SAID...NO VIS OR PRECIP CONCERNS
EXPECTED...AND WINDS ARE EXPECTED TO FOLLOW NORMAL DIURNAL PATTERNS.
&&
.SLC WATCHES/WARNINGS/ADVISORIES...
UT...NONE.
WY...NONE.
&&
PUBLIC...CONGER
AVIATION...MERRILL
FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
FOR FREQUENTLY ASKED QUESTIONS ABOUT THE AREA FORECAST DISCUSSION
VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY/GENERAL/AFD_FAQS.PHP (ALL LOWER CASE)
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