Small Craft Advisory 597, NWS Anchorage, AK

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
500 PM ADT SAT JUL 30 2005

.DISCUSSION...
AN UPPER LOW NEAR THE CENTRAL ALCAN BORDER WILL MOVE INTO THE CENTRAL
INTERIOR BY MONDAY AFTERNOON. A SHORT WAVE WILL ALONG THE WEST SIDE
OF THE LOW WILL SWING SOUTH INTO THE THE COPPER RIVER BASIN AND THE
SUSITNA VALLEY TONIGHT, INTO THE MATANUSKA VALLEY AND ANCHORAGE BOWL
SUNDAY AND WILL DISSIPATE OVER PRINCE WILLIAM SOUND SUNDAY NIGHT.

NUMEROUS SHOWERS WILL FORM ALONG AND JUST TO THE SOUTH OF THE MAIN
AXIS OF THE SHORT WAVE OVER THE SOUTHCENTRAL INTERIOR TONIGHT AND
INTO THE NORTHERN KENAI PENINSULA AND MATANUSKA VALLEY SUNDAY.

THERE APPEAR TO BE ENOUGH NEGATIVE VORTICITY ADVECTION BEHIND THE
UPPER WAVE TO ACTUALLY CLEAR SOME OF THE CLOUDS OUT OF SUSITNA VALLEY
FOR A SHORT PERIOD OF TIME SUNDAY.

THE SOUTHWEST INTERIOR, MAINLY THE SECTION BETWEEN THE ALEUTIAN RANGE
AND THE KUSKOKWIM MOUNTAINS. NUMEROUS THUNDERSTORMS ARE EXPECTED
MAINLY IN THE AFTERNOONS AND EVENING THROUGH MONDAY.

A 994 MB LOW 190 NM NORTHWEST OF ADAK WILL MOVE TO 400 NM SOUTHEAST
OF COLD BAY WILL LITTLE CHANGE IN PRESSURE.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALES AREAS 170 AND 172.
FIRE WEATHER...NONE.

NM JUL 05