Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 042143
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
343 PM MDT MON MAY 4 2015

.SYNOPSIS...A LOW PRESSURE SYSTEM TO THE SOUTH OF UTAH WILL
CONTINUE TO PUMP MOISTURE INTO THE GREAT BASIN THROUGH TUESDAY.
A WEATHER DISTURBANCE WILL MOVE SOUTH OUT OF THE PACIFIC NORTHWEST
AND IMPACT MUCH OF UTAH LATE THIS WEEK.


&&

.DISCUSSION...MADE VERY FEW CHANGES TO THE FORECAST FOR TODAY.
MOIST AND UNSTABLE AIR MASS WILL REMAIN IN PLACE OVER MUCH OF UTAH
THROUGH THE WEEK. LOW PRESSURE SYSTEM OVER THE PACIFIC NORTHWEST
WILL SLOWLY DIVE SOUTH ALONG THE WEST COAST KEEPING SOUTHWEST FLOW
OVER THE REGION WITH SEVERAL DISTURBANCES MOVING THROUGH. AS A
RESULT...SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE MAINLY
DURING THE AFTERNOON AND EVENING HOURS.

BY FRIDAY...THE LOW PRESSURE SYSTEM WILL BE CENTERED OVER SOUTHERN
CALIFORNIA AND UTAH AND WILL START TO SLOWLY SHIFT OFF TO THE
EAST. BY SATURDAY...THE LOW PRESSURE SYSTEM WILL BE SOUTH OF UTAH
AND CENTERED OVER NORTHERN ARIZONA. DURING THESE
PERIODS...THUNDERSTORMS WILL BE MORE ON THE ISOLATED SIDE AS
TEMPERATURES WILL BE A BIT COOLER THAN EARLIER IN THE WEEK.

BY SUNDAY AND MONDAY...THE LOW PRESSURE SYSTEM WILL MOVE EAST OF
THE AREA BRINGING MUCH DRIER CONDITIONS. TEMPERATURES WILL ALSO
START TO SLOWLY WARM AS A WEAK RIDGE OF HIGH PRESSURE MOVES ACROSS
THE AREA.

&&

.AVIATION...THUNDERSTORMS WILL IMPACT THE SLC TERMINAL THROUGH ABOUT
23Z WITH GUSTY ERRATIC OUTFLOW WINDS. CIGS WILL GENERALLY STAY ABV
6000 FT BUT COULD BRIEFLY LOWER BELOW THAT LEVEL IN RAIN SHOWERS
THROUGH 23Z. WINDS WILL REMAIN EASTERLY AFTER THE THUNDERSTORMS PASS
WITH SOUTHEAST WINDS PREVAILING OVERNIGHT. THERE IS A 20 PERCENT
CHANCE THAT ADDITIONAL PASSING SHOWERS WILL PRODUCE GUSTY ERRATIC
WINDS BETWEEN ABOUT 01Z AND 14Z.

&&

.FIRE WEATHER...THIS WEEK WILL GENERALLY BE WET...WITH MOIST RH AND
SEASONAL TO COOL TEMPERATURES.

THE WEATHER INTO WEDNESDAY WILL BE DOMINATED BY A SLOW MOVING
DISTURBANCE ACROSS ARIZONA. EXPECT SCATTERED SHOWERS AND
THUNDERSTORMS EACH DAY. DEWPOINTS HAVE RISEN INTO THE 40S AND 50S
INCREASING THE CHANCE OF WETTING RAIN. PRIMARY THREATS INCLUDE CLOUD
TO GROUND LIGHTNING ALONG WITH GUSTY/ERRATIC WINDS NEAR SHOWERS.
SNOW LEVELS SHOULD BE 9-10KFT.

THURSDAY LOOKS TO BE THE DRIEST DAY WITH AN INCREASING GUSTY
SOUTHWESTERLY FLOW AHEAD OF A LARGE STORM SYSTEM DROPPING SOUTH
ALONG THE WEST COAST. THIS STORM WILL MOVE THROUGH THE GREAT BASIN
INTO THE WEEKEND...BRINGING COOLER AND WETTER CONDITIONS ONCE AGAIN.
SNOW LEVELS LOOK TO LOWER BELOW 8KFT BY THE END OF THE WEEK.

&&

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

$$

PUBLIC...SOLUM
AVIATION...WILENSKY
FIRE WEATHER...ROGOWSKI

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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