Flash Flood Warning 1, NWS Fairbanks, AK

000 
WGAK79 PAFG 010223
FFSAFG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FAIRBANKS AK
622 PM ADT THU JUN 30 2005

AKZ220-221-010232-
YUKON FLATS AND SURROUNDING UPLANDS AK-CENTRAL INTERIOR AK-
622 PM ADT THU JUN 30 2005

...THE FLASH FLOOD WARNING FOR CENTRAL INTERIOR AND YUKON FLATS AND 
SURROUNDING UPLANDS IS CANCELLED...

LAT...LON 6547 14993 6541 14971 6558 14924 6564 14940

$$

JHD

NORTH ALASKA FORECAST DISCUSSION
230 PM ADT THU JUN 30 2005

.DISCUSSION...
UPPER AIR...NOT MUCH CHANGE FROM PREVIOUS DISCISSION...MODELS
STILL IN AGREEMENT WITH FALLING HEIGHTS ACROSS NORTHERN ALASKA
TODAY THROUGH SAT AS TROUGH MOVES SOUTH OVER THE ARCTIC AND LOW
MOVES EAST ACROSS BRISTOL BAY AND INTO THE GULF OF ALASKA. ARCTIC
TROUGH AXIS WILL EXTEND SOUTHWEST ACROSS BARROW TO KIVALINA AND
SAINT LAWRENCE ISLAND FRI MORNING AND BY SAT MORNING THE AXIS WILL
EXTEND FROM DEADHORSE TO AMBLER AND TO NUNIVAK ISLAND. TROUGH WILL
BECOME NEARLY STATIONARY AFTER THAT TIME AS CLOSED LOW ROTATES
OVER THE ARCTIC OCEAN. FOR THE BERING SEA...LOW NORTHEAST OF THE
PRIBILOFS WILL MOVE SOUTHEAST ACROSS KODIAK AND INTO THE GULF ON
FRI. ANOTHER LOW WILL FOLLOW ACROSS THE SOUTHERN BERING SEA SAT
AND REACH THE SOUTHWESTERN GULF OF ALASKA SUN MORNING.

SURFACE...THERMAL LOW OVER THE UPPER YUKON VALLEY WILL PERSIST AND
DEEPEN OVER THE EASTERN INTERIOR THROUGH THE WEEKEND WITH THE
THERMAL TROUGH EXTENDING WEST INTO THE LOWER KOBUK AND NOATAK
VALLEYS. THE RIDGE ACROSS ARCTIC COAST WILL GRADUALLY WEAKEN
THROUGH FRI AS LOW PRESSURE MOVES SOUTHEAST OVER THE ARCTIC OCEAN.
THE LOW WILL DISSIPATE OVER THE BEAUFORT SEA COAST SAT AFTERNOON.
OVER THE SOUTHWESTERN BERING SEA...LOW PRESSURE WILL BE OVER THE
WESTERN ALEUTIANS FRI EVENING AND MOVE EAST OF THE ALEUTIANS NEAR
COLD BAY SUN.

NORTH SLOPE...COOLER TEMPERATURES WILL CONTINUE INTO EARLY NEXT
WEEK. SHOWERS MAY OCCUR OVER THE BEAUFORT SEA COAST FRI NIGHT AND
SAT AS LOW PRESSURE DISSIPATES OVER THAT AREA. FOG IN ONSHORE FLOW
SAT THROUGH SUN NIGHT SHOULD BE PATCHY.

WEST COAST...NORTH WINDS WILL BEGIN CRANKING FRI AS PRESSURE
GRADIENT TIGHTENS BETWEEN RUSSIAN HIGH PRESSURE AND NORTHERN
ALASKA LOW PRESSURE. WINDS MAY APPROACH OR REACH ADVISORY LEVELS
OVER SAINT LAWRENCE ISLAND...THE BERING STRAIT...AND OVER THE
CHUKCHI SEA DURING THE WEEKEND. WINDS...DRY CONDITIONS...AND
SOMEWHAT COOLER TEMPERATURES WILL CONTINUE INTO EARLY NEXT WEEK.
LOW OVER SOUTHERN BERING SEA TRACKING EASTWARD SAT AND SAT NIGHT
WILL BE TOO FAR AWAY TO CAUSE PRECIPITATION FOR THE FORECAST AREA.

INTERIOR...AN INFLUX OF MOISTURE FROM THE SOUTHWEST COMBINED WITH
COOLER AIR MOVING IN FROM THE NORTH WILL GIVE A GOOD CHANCE OF
SHOWERS AND THUNDERSTORMS OVER THE CENTRAL TO EASTERN INTERIOR
DURING THE NEXT FEW DAYS. SMOKE TO THE WEST OF FIRES WILL BE
PUSHED EAST OF FIRES OVER THE NEXT DAY AS WINDS BECOME SOUTHWEST
TO WEST.

.HYDRO...NO SIGNIFICANT ISSUES.

.FIRE WEATHER...MOISTURE IS ON THE INCREASE. MOST OF ALASKA IS
CONVECTIVELY UNSTABLE TODAY WITH MOST ACTIVE THUNDERSTORM ACTIVITY
ALONG THE WEST CENTRAL AND EASTERN BROOKS RANGE AND THE ALASKA
RANGE NEAR DENALI. CONVECTION IS GETTING STARTED IN THE SOUTHERN
SMOKE FREE PORTIONS OF FOURTYMILE COUNTRY AND INTO THE CANADIAN
YUKON...YES WE NOW HAVE LIGHTNING DATA FROM ACROSS THE BORDER ONCE
AGAIN...WITH A COUPLE OF THUNDERSTORMS DEVELOPING.

.AFG WATCH/WARNING/ADVISORIES...
PUBLIC...DENSE SMOKE ADVISORY:
            ZONE 219 UPPER KOYUKUK VALLEY
            ZONE 220 YUKON FLATS AND SURROUNDING UPLANDS
MARINE...NONE

JHD/DA JUN 05