Brisk Wind Advisory 11, NWS Anchorage, AK

AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
500 PM AST TUE JAN 17 2006

.DISCUSSION...

STILL TRACKING THE VOLCANIC ASH CLOUD FROM THE 800AM AST ERUPTION.

LONG WAVE PATTERN CONTINUES TO SHIFT ACROSS ALASKA WITH THE LONG WAVE
RIDGE ESTABLISHING ITSELF FROM THE EASTERN ALEUTIANS ACROSS THE
BERING SEE INTO EASTERN SIBERIA. THE DOMINANT STORM TRACK IN THE
SOUTHERLY BRANCH OF THE POLAR JETSTREAM. HOWEVER AN UPPER LEVEL
TROUGH SLIDING ACROSS SOUTHWESTERN ALASKA WILL INTENSIFY AND A DEEP
UPPER LOW WILL ESTABLISH ACROSS CENTRAL ALASKA BY THURSDAY.

SNOW AREA ASSOCIATED WITH TROUGH DEVELOPING IN SOUTHWEST ALASKA WILL
SPREAD TO SOUTH CENTRAL ALASKA ON WEDNESDAY. DRYING AIR WILL MOVE
INTO THE BERING BEHIND THE TROUGH LEAVING ONLY A SMALL AREA OF
PRECIPITATION ALONG THE CENTRAL AND WESTERN ALEUTIANS. HOWEVER STRONG
WINDS WILL CONTINUE ACROSS THE WESTERN SECTIONS SOUTH OF THE STRONG
RIDGE.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...VOLCANIC ASH ADVIOSRY 121 171.
MARINE...MARINE WEATHER STATEMENT FOR VOLCANIC ASH 130 140 141. HEAVY
FREEZING SPRAY 160 179. GALES WARNING 170 171 172 175 176.
FIRE WEATHER...NONE.

CAS JAN 06