Area Forecast Discussion
Issued by NWS Grand Junction, CO

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090
FXUS65 KGJT 302147
AFDGJT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
347 PM MDT SAT APR 30 2016

.SHORT TERM...(THIS EVENING THROUGH SUNDAY NIGHT)
ISSUED AT 255 PM MDT SAT APR 30 2016

A LARGE AMPLITUDE PATTERN ACROSS NORTH AMERICA WILL MEAN VERY
SLOW MOVING SYSTEMS FOR THE NEXT SEVERAL DAYS. AS ONE OLD LOW
GRADUALLY MOVES EAST OVER THE PLAINS INTO THE OHIO RIVER VALLEY
TONIGHT THROUGH SUNDAY NIGHT...ANOTHER PACIFIC LOW...NOW CENTERED
OVER WESTERN AZ...WITH FILL AND MOVE EAST AND OVER THE FOUR
CORNERS. THIS IS A WEAKER SOLUTION THAN SEEN IN THE PAST FEW DAYS
AND MEANS THE PRECIPITATION FROM THIS SYSTEM WILL BE CONFINED
FURTHER SOUTH. HAVE INCREASED THE CHANCE OF RAIN FOR AREAS SOUTH
OF ABOUT A LINE FROM MOAB TO ASPEN...AND DECREASED CHANCES TO THE
NORTH.

.LONG TERM...(MONDAY THROUGH SATURDAY)
ISSUED AT 255 PM MDT SAT APR 30 2016

PRECIPITATION FROM THE SOUTHERN SYSTEM WILL LINGER OVER THE SAN
JUANS AND FOUR CORNERS INTO TUESDAY...THOUGH IT WILL BE STEADILY
DECREASING AND SLIDING EAST. WED AND THU RESIDUAL MOISTURE WILL
ALLOW ISOLATED AFTERNOON THUNDERSTORMS FORM OVER THE MOUNTAINS THE
MIDWEEK SHOULD BE RELATIVELY DRY AND HIGH PRESSURE DROPS IN FROM
THE NORTH. THU AFTERNOON THE RIDGELINE WILL PASS EAST OF THE AREA
AND SOUTHWEST WINDS AHEAD OF THE NEXT PACIFIC SYSTEM WILL INCREASE
OVER THE AREA. FRIDAY COULD BE QUITE WINDY AS THIS STRONG CLOSED
LOW MOVES INTO THE GREAT BASIN AND ENCOMPASSES MOST OF THE WESTERN
U.S. ON SAT THE LOW CENTER WILL BE OVER EASTERN UT WITH RELATIVELY
WET CONDITIONS OVER THE AREA FOR ANOTHER WEEKEND.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z SUNDAY AFTERNOON)
ISSUED AT 255 PM MDT SAT APR 30 2016

CLOUDS AND SHOWERS FROM TWO STORMS...ONE TO THE NORTHEAST AND THE
OTHER TO THE SOUTHWEST...WILL KEEP OCCASIONAL ILS CIGS OVER MOST
TAF SITES TONIGHT. MTS WILL BE MOSTLY OBSCURED. CONDITIONS WILL
BEGIN TO DETERIORATE ACROSS THE FOUR CORNERS REGION AFTER 06Z
TONIGHT WITH LOWERING CIGS AND MORE WIDESPREAD PRECIPITATION WITH
LITTLE CHANGE ELSEWHERE.

&&

.GJT WATCHES/WARNINGS/ADVISORIES...
CO...NONE.
UT...NONE.
&&

$$

SHORT TERM...CC
LONG TERM...CC
AVIATION...CC



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