Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 251031
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
431 AM MDT SAT JUL 25 2015

.SYNOPSIS...A DRY SOUTHWESTERLY FLOW ALOFT WILL PREVAIL ACROSS THE
REGION THROUGH THE WEEKEND. A DRY COLD FRONT WILL CROSS THE AREA ON
MONDAY...BRINGING MUCH COOLER TEMPERATURES TO NORTHERN AND CENTRAL
UTAH THROUGH TUESDAY.

&&

.DISCUSSION...SOUTHWEST FLOW REMAINS IN PLACE OVER THE FORECAST AREA
THIS MORNING. THE SHORTWAVE TROUGH THAT HAD BEEN THE CAUSE OF THE
SHOWERS ACROSS NORTHWEST UTAH THE PAST FEW DAYS HAS WEAKENED AND IS
MOVING EAST OF THE AREA. WITH LITTLE LEFT IN THE WAY OF FORCING AND
CONTINUED DRYING OF THE AIRMASS...EXPECT MOSTLY SUNNY SKIES WITH
TEMPERATURES REMAINING NEAR TO JUST SLIGHTLY BELOW NORMAL TODAY.

THE PATTERN WILL AMPLIFY TOMORROW AS THE NEXT TROUGH CARVES INTO THE
PACNW STATES. THIS WILL CAUSE THE FLOW TO TURN A BIT MORE SOUTHERLY
OVER ARIZONA...ALLOWING MOISTURE TO INCREASE OVER FAR SOUTHEAST
UTAH. THIS COUPLED WITH A WEAK DISTURBANCE CROSSING THE AREA COULD
LEAD TO A FEW SHOWERS NEAR THE FOUR CORNERS...BUT AT THIS TIME
SHOWERS ARE EXPECTED TO REMAIN OUTSIDE OF THE FORECAST AREA.
OTHERWISE...WITH SOUTHWEST FLOW INCREASING OVER UTAH...EXPECT
TEMPERATURES TO TREND UPWARD ACROSS MUCH OF THE AREA TOMORROW.

THE TROUGH WILL CROSS THE NORTHERN ROCKIES ON MONDAY...PUSHING A DRY
COLD FRONT INTO UTAH. THIS WILL BRING A NOTICEABLE COOLING TREND TO
MUCH OF NORTHERN AND CENTRAL UTAH. MAX TEMPERATURES ACROSS NORTHERN
UTAH ARE EXPECTED TO BE AROUND 15 DEGREES BELOW NORMAL ON TUESDAY
BEHIND THE FRONT.

A WESTERLY FLOW ALOFT IS EXPECTED TO DEVELOP ACROSS MUCH OF THE AREA
FOR MIDWEEK BEFORE HIGH PRESSURE STARTS TO AMPLIFY AGAIN OVER THE
GREAT BASIN. MOISTURE CROSSING THE SOUTHERN PERIPHERY OF THE RIDGE
WILL MOSTLY REMAIN OVER ARIZONA....BUT MAY START TO SPREAD INTO
SOUTHERN UTAH BY THE END OF THE WEEK. OTHERWISE...EXPECT
TEMPERATURES TO REBOUND DURING THIS TIME.

&&

.AVIATION...SOUTHERLY WINDS WILL CONTINUE AT THE SLC TERMINAL.
EXPECT A WIND SHIFT TO THE NORTHWEST BETWEEN 19-21Z TODAY.

&&

.FIRE WEATHER...HIGH PRESSURE WILL REMAIN IN PLACE THROUGH THE
WEEKEND. A PACIFIC SYSTEM WILL CROSS THE PACIFIC NORTHWEST INTO THE
NORTHERN ROCKIES MONDAY INTO TUESDAY. EXPECT GUSTY SOUTH WINDS AND
LOW HUMIDITIES AHEAD OF THIS SYSTEM SUNDAY AND MONDAY...WITH THE
POTENTIAL FOR CRITICAL FIRE WEATHER CONDITIONS WHERE FUELS ARE
CRITICAL.

THE ASSOCIATED COLD FRONT WILL CROSS THE STATE MONDAY INTO EARLY
TUESDAY. THIS COLD FRONT IS EXPECTED TO BE MAINLY DRY BUT WILL BRING
A SIGNIFICANT COOL DOWN TO THE STATE TUESDAY. TEMPERATURES WILL
QUICKLY REBOUND WEDNESDAY AND THURSDAY. THERE IS LITTLE CHANCE OF
PRECIPITATION OVER THE NEXT 7 DAYS.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...NONE.
WY...NONE.
&&

$$

CHENG/KRUSE

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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