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SEATTLE TRACON
| UPPER AIR PATTERN AT APPROXIMATELY FL180 |
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SYNOPSIS...THE NEXT FRONT OFFSHORE APPROACHING THE COAST THIS
MORNING THEN WEAKENS AS IT MOVES ASHORE IN THE AFTERNOON.
THE LEFT OVER FRONTAL BOUNDARY WILL LIKELY STALL OVER THE AREA
TONIGHT WITH CLOUDS AND SOME SPOTTY LIGHT PRECIPITATION.
THEN THE NEXT MUCH STRONGER LOW PRESSURE SYSTEM WILL PUSH A STRONG
COLD FRONT THROUGH THE AREA DURING THE DAY FRIDAY AND EARLY FRIDAY
NIGHT FOR LOCALLY BREEZY CONDITIONS AND A GOOD SHOT OF RAIN...THEN
FOLLOWED BY THE ASSOCIATED COLD UPPER LOW LATER FRIDAY NIGHT AND
SATURDAY FOR PLENTY OF SHOWERS AND QUITE LOW SNOW LEVELS DOWN INTO AT
LEAST THE HIGHER HILLS AND FOOTHILLS.
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