Small Craft Advisory 437, NWS Anchorage, AK

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
500 PM ADT TUE MAY 9 2006

.DISCUSSION...
THE MODELS ARE IN GOOD AGREEMENT THIS MORNING.

...UPPER AIR...
THE AREAS OF LOW PRESSURE OVER THE WESTERN GULF OF ALASKA WILL REMAIN
OVER THE GULF THROUGH FRIDAY AFTERNOON. AN UPPER RIDGE OF HIGH
PRESSURE OVER THE WESTERN BERING SEA WILL MOVE INTO THE EASTERN
BERING SEA FRIDAY.

...AT THE SURFACE...
THE SURFACE FEATURE WILL MIRROR THE UPPER AIR FEATURES. A WEAK LOW
SOUTH OF KODIAK ISLAND WILL SLOWLY WEAKEN AS IT MOVES INTO THE
CENTRAL GULF THURSDAY AFTERNOON THEN WILL DISSIPATE FRIDAY. RAIN
SHOWERS ALONG THE GULF COAST WILL CONTINUE THROUGH WED NIGHT THEN
DIMINISH THURSDAY.

A WEAK THERMAL TROUGH OVER THE TANANA VALLEY AND THE LOWER YUKON
VALLEY WILL SPREAD INTO THE SOUTHERN INTERIOR THURSDAY. THE SHOWER
ACTIVITY OVER THE INLAND PORTIONS OF SOUTHCENTRAL ALASKA AND THE
KUSKOKWIM VALLEY WILL INCREASE THROUGH THURSDAY.

RIDGE OF HIGH PRESSURE OVER THE WESTERN BERING SEA WILL MOVE INTO THE
EASTERN BERING SEA THURSDAY AND INTO WESTERN ALASKA FRIDAY.

A DEVELOPING LOW PRESSURE CENTER OVER THE NORTHWEST PACIFIC WILL
DEEPEN TO 980 MB OVER EASTERN SEA OF OHKOTSK FRIDAY. GALE FORCE WINDS
WILL MOVE INTO THE WESTERN ALEUTIANS THURSDAY.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALES WESTERN ALEUTIANS.
FIRE WEATHER...RED FLAG WARNING FOR THE MATANUSKA VALLEY TODAY.

NM MAY 06