Areal Flood Warning 2, NWS Anchorage, AK

629 
WGAK88 PAFC 150627
FLSAFC

FLOOD STATEMENT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1027 PM AKDT MON MAY 14 2012

AKZ155-170600-
/O.CON.PAFC.FA.W.0002.000000T0000Z-120517T0600Z/
/00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KUSKOKWIM DELTA AK-
1027 PM AKDT MON MAY 14 2012

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM AKDT WEDNESDAY 
FOR THE KUSKOKWIM RIVER AT KWETHLUK...

WATER LEVELS CONTINUED TO RISE MONDAY AT KWETHLUK. NUMEROUS ROADS 
REMAINED INUNDATED INCLUDING PORTIONS OF THE ROAD TO THE AIRPORT. 
THE ICE HAS MOVED OUT OF THE KUSKOKUAK CHANNEL TO THE KUSKOKWIM 
RIVER BELOW THE VILLAGE. AN ICE JAM FORMED MONDAY AFTERNOON ABOUT 5 
RIVER MILES BELOW THE VILLAGE. WATER LEVELS REMAIN ABOVE FLOOD 
LEVELS AT KWETHLUK DUE TO A COMBINATION OF THE KUSKOKWIM BREAKUP AND 
SNOWMELT IN THE KWETHLUK RIVER. FLOODING IS EXPECTED TO CONTINUE FOR 
SEVERAL DAYS.

PRECAUTIONARY/PREPARENESS ACTIONS...

IF YOU LIVE NEAR OR ALONG THE KUSKOKWIM RIVER NEAR KWETHLUK STAY 
ALERT AND BE PREPARED TO TAKE ACTION.

A FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT.  TO 
ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

&&

LAT...LON 6084 16144 6080 16140 6076 16152 6083 16153

$$

DS/BB

737 
WGAK88 PAFC 161913
FLSAFC

FLOOD STATEMENT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1113 AM AKDT WED MAY 16 2012

AKZ155-170600-
/O.CON.PAFC.FA.W.0002.000000T0000Z-120517T0600Z/
/00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KUSKOKWIM DELTA AK-
1113 AM AKDT WED MAY 16 2012

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM AKDT WEDNESDAY 
FOR THE KUSKOKWIM RIVER NEAR KWETHLUK...

HIGH WATER LEVELS IN THE LOWER KUSKOKWIM RIVER COMBINED WITH ICE 
JAMS DOWNSTREAM OF KWETHLUK CAUSED WATER LEVELS TO RISE MONDAY. THE 
BREAKUP FRONT HAS MOVED AND IS NOW BETWEEN NAPASKIAK AND NAPAKIAK. 
WATER LEVELS ARE DROPPING IN KWETHLUK BUT SOME FLOODING OF ROADWAYS 
AND LOW LYING AREAS IS STILL PRESENT.

PRECAUTIONARY/PREPARENESS ACTIONS...

A FLOOD WARNING MEANS THAT FLOODING IS OCCURING OR IMINENT. 
RESIDENTS NEAR THE RIVER SHOULD TAKE PRECAUTIONS TO PROTECT LIFE 
AND PROPERTY. RESIDENTS ARE ADVISED TO MONITOR THE SITUATION. 

&&

LAT...LON 6084 16144 6080 16140 6076 16152 6083 16153

$$

SEB

689 
WGAK88 PAFC 162100
FLSAFC

FLOOD STATEMENT
NATIONAL WEATHER SERVICE ANCHORAGE AK
100 PM AKDT WED MAY 16 2012

AKZ155-162107-
/O.CAN.PAFC.FA.W.0002.000000T0000Z-120517T0600Z/
/00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KUSKOKWIM DELTA AK-
100 PM AKDT WED MAY 16 2012

...THE FLOOD WARNING HAS BEEN CANCELLED FOR THE KUSKOKWIM RIVER NEAR 
KWETHLUK...

WATER LEVELS ALONG THE KUSKOKWIM RIVER NEAR KWETHLUK REMAIN 
HIGH...BUT HAVE STARTED TO RECED AND WILL CONTINUE TO FALL OVER  
THE NEXT COUPLE DAYS. FLOODING IN KWETHLUK IS NO LONGER EXPECTED.

LAT...LON 6084 16144 6080 16140 6076 16152 6083 16153

$$

SEB

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKDT SUN MAY 13 2012

.MODEL DISCUSSION...MODELS ARE IN FAIR AGREEMENT THROUGH THE NEXT 48
HRS. THE ECMWF MODEL OVERALL HANDLES THE LOW OVER THE NORTHERN GULF
AND COMPLEX OUT WEST THE BEST AND WILL BE USED FOR THE FORECAST
PACKAGE.

.ANALYSIS AND UPPER LEVELS...

.500 MB...A COLD LOW NEAR KODIAK MOVES EAST TO OVER SOUTHEAST ALASKA
TUE EVENING. A HIGH AMPLITUDE RIDGE OVER THE EASTERN BERING SEA MOVES

TO OVER THE WESTERN HALF OF THE MAINLAND TUESDAY. A COLD LOW OVER THE
KAMCHATKA PENINSULA INTENSIFIES AS IT DROPS SOUTH OF THE WESTERN
ALEUTIANS TUESDAY.

.SURFACE...

THE SNOWFALL OVER NORTHERN KODIAK ISLAND WILL CONTINUE TO DIMINISH
THROUGH THIS AFTERNOON AS THE SURFACE LOW WEAKENS. A SECONDARY LOW
DEVELOPS SOUTHEAST OF KODIAK THIS AFTERNOON AND MOVES TO THE NORTH
CENTRAL GULF OF ALASKA TONIGHT. THIS LOW WILL LIKELY BRING GALES TO
THE GULF AND POTENTIALLY STRONG WINDS TO THE NORTH GULF COAST
TONIGHT. THE HIGH PRESSURE RIDGE OVER THE EASTERN BERING SEA
PROGRESSES EAST TONIGHT TO OVER THE GULF AND CENTRAL MAINLAND BY TUE.
THE LOW CENTER SOUTH OF THE WESTERN ALEUTIANS MOVES TO THE NORTHEAST
BERING SEA TUE AND WEAKENS. A SECONDARY CENTER NEAR THE KAMCHATKA
PENINSULA TODAY MOVES SOUTH OF THE CENTRAL ALEUTIANS TUE.

.SHORT TERM FORECAST...

.SOUTHCENTRAL...SHOWERS WILL CONTINUE ACROSS MUCH OF THE GULF COAST
THROUGH TONIGHT AS THE UPPER TROUGH AND SURFACE CENTER PROCESS EAST.
SHOWERS ARE EXPECTED ACROSS MUCH OF THE GULF COAST. SHOWERS WILL BE
MIXED AT TIMES AS TEMPERATURES CONTINUE TO COOL ALOFT THROUGH MON.
COOLING TEMPS ALOFT MAY ALSO TRIGGER AFTERNOON AND EVENING
THUNDERSTORMS OVER THE COPPER RIVER BASIN AND THE TALKEETNA MOUNTAINS
TODAY AND MON. GALES ARE EXPECTED OVER THE NORTH GULF OF ALASKA
TONIGHT WITH THE DEVELOPING SURFACE LOW. A WEAK BARRIER JET WILL ALSO
BRING BRISK EASTERLY WINDS TO THE NORTH GULF GULF TONIGHT. DRIER AND
WARMER WEATHER IS ON THE WAY WITH THE RIDGE TUE AND WED.

BEARING SEA/ALEUTIANS...PERIODS OF GALES AND WARMING CONDITIONS ARE
EXPECTED OVER THE REGION OVER THE NEXT DAY OR SO AS A SERIES OF LOWS
IMPACT THE AREA. PRECIPITATION TYPE SHOULD CHANGE FROM MIXED TO
GENERALLY RAIN OR SHOWERS.

FOR SW AK...MIXED SHOWERS ARE EXPECTED INLAND AREAS AND BRISTOL BAY
TONIGHT...AND MAINLY INLAND ON MON. CONDITIONS OVER ALL WILL
STABILIZE AS HIGH PRESSURE BUILDS IN FROM THE WEST MON AND TUE.
EXPECT STRATUS AND FOG TO AFFECT THE COASTS WITH THE BUILDING RIDGE
AND IMPACT AVIATION OPERATIONS MON AND TUE.

.LONG TERM FORECAST...
THE WEST WILL CONTINUE TO HAVE RAIN UNTIL A RIDGE BUILDS IN AT THE
END OF THE WEEK. SW AK WILL REMAIN DRY UNTIL SOME SHOWERS ARRIVE ON
FRI. SE OF THE AK RANGE WILL REMAIN DRY UNTIL AFTERNOON AND EVENING
MOUNTAIN CONVECTION RETURN AT WEEKS END AS THE THERMAL TROUGH
REDEVELOPS ALONG THE AK RANGE.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...FLOOD WATCH 155.
MARINE...GALES 120 172 175 351 413
FIRE WEATHER...NONE.

RMC MAY 12