Blizzard Warning 19, NWS Fairbanks, AK

613 
WWAK42 PAFG 070139
WSWWCZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
539 PM AKDT SAT APR 6 2013

AKZ207-070800-
/X.CON.PAFG.BZ.W.0019.000000T0000Z-130407T0800Z/
CHUKCHI SEA COAST-
INCLUDING...POINT HOPE...SHISHMAREF...KIVALINA...ESPENBERG
539 PM AKDT SAT APR 6 2013

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT AKDT
TONIGHT...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT AKDT TONIGHT.

* LOCATION...CHUKCHI SEA COAST NORTHWEST OF CAPE KRUSENSTERN.

* WINDS...NORTH GUSTING TO 45 MPH.

* VISIBILITY...LOCALLY REDUCED TO ONE QUARTER MILE OR LESS BY 
  BLOWING SNOW. 

* WIND CHILL...TO 40 BELOW.

* TIMING...BLIZZARD CONDITIONS ARE EXPECTED TO END BY MIDNIGHT 
  TONIGHT AS WIND SPEEDS DECREASE AND VISIBILITY IMPROVES. WIND 
  CHILL WILL EASE SOME AS THE WIND SPEEDS BEGIN TO DECREASE THIS 
  EVENING. 

* IMPACTS...EXPOSED FLESH CAN FREEZE IN A SHORT TIME RESULTING 
  IN FROSTBITE. TRAVEL AND OUTDOOR ACTIVITY WILL BE DIFFICULT IN 
  AREAS WITH POOR VISIBILITY IN BLOWING SNOW. WHITEOUT 
  CONDITIONS MAY OCCUR. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS IN
BLOWING SNOW WITH STRONG WINDS AND VERY POOR VISIBILITIES ARE
OCCURRING OR EXPECTED.

&&

$$

AKZ213-070945-
/X.EXB.PAFG.WW.Y.0057.000000T0000Z-130407T1400Z/
ST LAWRENCE ISLAND AND BERING STRAIT COAST-
INCLUDING...GAMBELL...SAVOONGA...BREVIG MISSION...TELLER...
WALES...DIOMEDE
539 PM AKDT SAT APR 6 2013

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM AKDT SUNDAY 
   IN THE BERING STRAIT...

THE NATIONAL WEATHER SERVICE IN FAIRBANKS HAS ISSUED A WINTER
WEATHER ADVISORY FOR BLOWING SNOW AND WIND CHILLS...WHICH IS IN
EFFECT UNTIL 6 AM AKDT SUNDAY.

* LOCATION...BERING STRAIT

* WINDS...NORTH GUSTING TO 45 MPH.

* WIND CHILL...WIND CHILL TO 35 BELOW.

* VISIBILITY...ONE HALF MILE OR LESS IN BLOWING SNOW.

* TIMING...STRONG WINDS WILL DECREASE EARLY SUNDAY MORNING AND
  CONDITIONS WILL IMPROVE THEN.

* IMPACTS...TRAVEL AND OUTDOOR ACTIVITY WILL BE DIFFICULT IN 
  AREAS WITH BLOWING SNOW AND DRIFTING SNOW. EXPOSED FLESH CAN 
  FREEZE IN A SHORT TIME RESULTING IN FROSTBITE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT ONE OR MORE WINTER WEATHER
HAZARDS ARE EXPECTED TO CAUSE TRAVEL DIFFICULTIES.

&&

$$

AKZ217-070800-
/X.CON.PAFG.WW.Y.0057.000000T0000Z-130407T0800Z/
UPPER KOBUK AND NOATAK VALLEYS-
INCLUDING...AMBLER...SHUNGNAK...KOBUK
539 PM AKDT SAT APR 6 2013

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT AKDT
TONIGHT...

A WINTER WEATHER ADVISORY FOR WIND CHILL AND STRONG WINDS REMAINS
IN EFFECT UNTIL MIDNIGHT AKDT TONIGHT. 

* LOCATION...UPPER NOATAK VALLEY.

* WINDS...NORTH GUSTING TO 45 MPH.

* WIND CHILL...WIND CHILL TO 45 BELOW.

* VISIBILITY...LOCALLY ONE HALF MILE OR LESS IN BLOWING SNOW.

* TIMING...WINDS WILL DECREASE AFTER MIDNIGHT 
  TONIGHT...AND CONDITIONS WILL IMPROVE THEN.

* IMPACTS...TRAVEL AND OUTDOOR ACTIVITY WILL BE DIFFICULT IN 
  AREAS WITH BLOWING SNOW AND DRIFTING SNOW. EXPOSED FLESH CAN 
  FREEZE IN A SHORT TIME RESULTING IN FROSTBITE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT ONE OR MORE WINTER WEATHER
HAZARDS ARE EXPECTED TO CAUSE TRAVEL DIFFICULTIES.

&&

$$

471 
WWAK42 PAFG 070735
WSWWCZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
1135 PM AKDT SAT APR 6 2013

AKZ207-070845-
/X.CAN.PAFG.BZ.W.0019.000000T0000Z-130407T0800Z/
CHUKCHI SEA COAST-
INCLUDING...POINT HOPE...SHISHMAREF...KIVALINA...ESPENBERG
1135 PM AKDT SAT APR 6 2013

...BLIZZARD WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN FAIRBANKS HAS CANCELLED THE
BLIZZARD WARNING. 


$$

AKZ217-071400-
/X.EXT.PAFG.WW.Y.0057.000000T0000Z-130407T1800Z/
UPPER KOBUK AND NOATAK VALLEYS-
INCLUDING...AMBLER...SHUNGNAK...KOBUK
1135 PM AKDT SAT APR 6 2013

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 10 AM AKDT
SUNDAY...

THE WINTER WEATHER ADVISORY FOR WIND CHILL AND STRONG WINDS IS
NOW IN EFFECT UNTIL 10 AM AKDT SUNDAY. 

* LOCATION...UPPER NOATAK VALLEY.

* WINDS...NORTH GUSTING TO 45 MPH.

* WIND CHILL...WIND CHILL TO 45 BELOW.

* VISIBILITY...LOCALLY ONE HALF MILE OR LESS IN BLOWING SNOW.

* TIMING...WINDS WILL DECREASE SUNDAY MORNING...AND CONDITIONS WILL
  IMPROVE THEN.

* IMPACTS...TRAVEL AND OUTDOOR ACTIVITY WILL BE DIFFICULT IN 
  AREAS WITH BLOWING SNOW AND DRIFTING SNOW. EXPOSED FLESH CAN 
  FREEZE IN A SHORT TIME RESULTING IN FROSTBITE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT ONE OR MORE WINTER WEATHER
HAZARDS ARE EXPECTED TO CAUSE TRAVEL DIFFICULTIES.

&&

$$

AKZ213-071400-
/X.CON.PAFG.WW.Y.0057.000000T0000Z-130407T1400Z/
ST LAWRENCE ISLAND AND BERING STRAIT COAST-
INCLUDING...GAMBELL...SAVOONGA...BREVIG MISSION...TELLER...
WALES...DIOMEDE
1135 PM AKDT SAT APR 6 2013

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM AKDT
SUNDAY IN THE BERING STRAIT...

A WINTER WEATHER ADVISORY FOR BLOWING SNOW AND WIND CHILLS
REMAINS IN EFFECT UNTIL 6 AM AKDT SUNDAY. 

* LOCATION...BERING STRAIT

* WINDS...NORTH GUSTING TO 45 MPH.

* WIND CHILL...WIND CHILL TO 35 BELOW.

* VISIBILITY...ONE HALF MILE OR LESS IN BLOWING SNOW.

* TIMING...STRONG WINDS WILL DECREASE EARLY SUNDAY MORNING AND 
  CONDITIONS WILL IMPROVE THEN. 

* IMPACTS...TRAVEL AND OUTDOOR ACTIVITY WILL BE DIFFICULT IN 
  AREAS WITH BLOWING SNOW AND DRIFTING SNOW. EXPOSED FLESH CAN 
  FREEZE IN A SHORT TIME RESULTING IN FROSTBITE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT ONE OR MORE WINTER WEATHER
HAZARDS ARE EXPECTED TO CAUSE TRAVEL DIFFICULTIES.

&&

$$

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
1220 PM AKDT SAT APR 6 2013

.DISCUSSION...
OUT THROUGH WEDNESDAY...THERE IS GOOD AGREEMENT BETWEEN THE
06/00Z ECMWF AND ITS ENSEMBLE MEAN...THE 06/00Z GFS ENSEMBLE
MEAN AND THE 06/12Z OPERATIONAL GFS RUN. AN EXPANSIVE DEEP AND
COLD UPPER LOW CENTERED OVER THE WESTERN INTERIOR WILL CONTINUE TO
WOBBLE AROUND OVER THE WESTERN INTERIOR THROUGH WEDNESDAY. 850 MB
AND SURFACE TEMPERATURES WILL CONTINUE TO BE WELL BELOW SEASONAL
NORMALS...WITH THE COLDEST AIR REMAINING OVER THE WESTERN TWO
THIRDS OF THE FORECAST AREA. BEYOND WEDNESDAY..THE OPERATIONAL
RUNS AND ENSEMBLE MEANS POINT TO A BUILDING RIDGE OVER THE BERING
SEA WITH THE UPPER LOW AND COLD AIR BEING PUSHED GRADUALLY
EASTWARD.

THE LATEST NCEP/CPC ENSEMBLE MEAN TEMPERATURE OUTLOOK INDICATES
TEMPERATURES CONTINUING TO AVERAGE MUCH BELOW NORMAL OVER MOST OF
THE NORTHERN ALASKA MAINLAND IN THE 6-10 DAY TIME FRAME...APRIL
12 THROUGH APRIL 16. OVER THE INTERIOR...TEMPERATURES ARE EXPECTED
TO AVERAGE 10 TO 20 DEGREES BELOW NORMAL DURING THIS PERIOD.

ON THE SURFACE...A WEAK SURFACE LOW IS EXPECTED TO DEVELOP
OVER THE COOK INLET/KENAI PENINSULA AREA THIS AFTERNOON
AND EVENING. THE LOW IS EXPECTED TO TRACK SLOWLY NORTHEASTWARD
TO BE CENTERED NEAR NORTHWAY BY SUNDAY EVENING. ANOTHER WEAK
LOW IS EXPECTED TO MOVE ACROSS THE SOUTHEAST INTERIOR EARLY NEXT
WEEK. THESE TWO SYSTEMS WILL PRODUCE SNOW OVER THE ALASKA
RANGE AND PERIODS OF SNOW AT TIMES OVER THE MUCH OF CENTRAL
AND EASTERN INTERIOR.

THE PRESSURE GRADIENT ALONG THE BROOKS RANGE AND OVER
PARTS OF NORTHWEST ALASKA SHOULD BEGIN TO WEAKEN THIS
EVENING. WILL RUN THE THE WIND CHILL ADVISORIES FOR
ZONES 205-206-217-218 AND THE BLIZZARD WARNING FOR
AKZ207 THROUGH MIDNIGHT TONIGHT. BLIZZARD CONDITIONS
IN ZONE 207 WILL BE LIMITED TO AREAS ALONG THE COAST
FROM CAPE KRUSENSTERN NORTHWEST.

&&

.FIRE WEATHER...
NIL.

&&

.HYDROLOGY...
SNOWMELT IN THE INTERIOR REMAINS IN HOLDING PATTERN...TEMPERATURES
ARE EXPECTED TO AVERAGE WELL BELOW FREEZING FOR THE NEXT WEEK. THE
LOW TEMPERATURES SHOULD KEEP RIVER ICE FIRM...AND A SMALL INCREASE
IN RIVER ICE THICKNESS IS POSSIBLE.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...

BLIZZARD WARNING FOR AKZ207.

WIND CHILL ADVISORY FOR AKZ205-AKZ206-AKZ217-AKZ218.

BRISK WIND ADVISORY FOR PKZ210-PKZ220

&&

RF APR 13