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AREA FORECAST DISCUSSION

 
 FXUS65 KSLC 281546
AFDSLC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
946 AM MDT SAT MAR 28 2015

.SYNOPSIS...A WEATHER DISTURBANCE MOVING EAST THROUGH THE NORTHERN
ROCKIES WILL SEND A COLD FRONT SOUTH ACROSS UTAH THROUGH THIS
EVENING. A SECOND WEAK DISTURBANCE WILL FOLLOW LATE SUNDAY...WITH
HIGH PRESSURE ALOFT RETURNING TO THE GREAT BASIN EARLY IN THE
UPCOMING WEEK.

&&

.DISCUSSION...THE SHORTWAVE EXTENDING FROM WESTERN MONTANA SOUTH
INTO NORTH-CENTRAL NEVADA WILL CLIP THE NORTHERN HALF OF UTAH
TODAY. THE ASSOCIATED COLD FRONT WILL MOVE INTO NORTHWEST UTAH
LATER THIS MORNING...THEN SWEEP SOUTH INTO EXTREME SOUTHERN UTAH
THIS EVENING.

THE SURFACE FRONT IS WELL-DEFINED ACROSS SOUTHWEST IDAHO WITH
STRONG POST-FRONTAL PRESSURE RISES AND GUSTY WEST-NORTHWEST WINDS.
STRONG LOW-LEVEL COLD ADVECTION ACROSS SOUTHWEST IDAHO/NORTHERN
NEVADA WILL WEAKEN AS THIS FEATURE MOVES ACROSS NORTHERN UTAH.
STILL LOOKING AT A SOLID FRONTAL PASSAGE THROUGH NORTHERN AND
CENTRAL UTAH TODAY...THOUGH CONVECTIVE PRECIP MAY BE A BIT OF A
STRUGGLE CONSIDERING THE RATHER DRY AIR MASS ACROSS THE STATE AND
MARGINAL LIFT FROM WEAK DYNAMIC SUPPORT AND WEAKENING THERMAL
ADVECTION. GUSTY WIND WITH STEADY OR FALLING TEMPS BEHIND THE
FRONT WILL BE THE MAIN SENSIBLE WEATHER TODAY. CURRENT FORECAST
PACKAGE DOES MENTION A SLIGHT CHANCE OF CONVECTIVE PRECIP FOR THE
NORTHERN/CENTRAL MOUNTAINS...THOUGH THIS MAY BE A BIT OF A STRETCH
WITH THE UNFAVORABLE ATMOSPHERIC CONDITIONS.

A SECOND SHORTWAVE SCHEDULED TO ARRIVE LATE SUNDAY WILL ALSO COME
UP A LITTLE SHORT ON PRECIP FOR SUNDAY NIGHT/MONDAY. THIS SECOND
FEATURE WILL TRACK EAST THROUGH THE GREAT BASIN...BUT WILL BE
SPLITTING AND WEAKENING AS IT CROSSES UTAH LATE SUNDAY NIGHT
THROUGH MONDAY.

HIGH PRESSURE ALOFT WILL QUICKLY FOLLOW FOR MONDAY NIGHT/TUESDAY.
THIS HIGH PRESSURE WILL CONTINUE EAST AWAY FROM UTAH LATER ON
TUESDAY...ONLY TO BE REPLACED BY A SERIES OF PROGRESSIVELY
STRONGER WEATHER DISTURBANCES MOVING OFF THE PACIFIC DURING THE
MIDDLE AND LATTER PORTION OF THE UPCOMING WEEK.

&&

.AVIATION...SOUTHERLY WINDS WILL INCREASE AT THE SLC TERMINAL
BETWEEN 16 AND 18Z AHEAD OF AN APPROACHING COLD FRONT. WINDS ARE
EXPECTED TO TRANSITION TO WEST NORTHWEST ABOUT 18Z THEN INCREASE IN
STRENGTH WITH THE PASSAGE WHICH IS EXPECTED AT ABOUT 20Z. NO CIGS
BELOW 10K FT AGL ARE EXPECTED WITH THIS WEATHER SYSTEM.


&&

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




PUBLIC...CONGER
AVIATION...STRUTHWOLF

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VISIT...
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