Alert archive / Alaska / Ice Storm Warnings in 2016

Ice Storm Warning 1, NWS Anchorage, AK

March 31, 2016

NWS Anchorage, AK issued this ice storm warning at Mar 31, 2016, 2:06 AM AKDT. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 31, 2016, 2:06 AM AKDT (10:06 UTC)
Expired
Mar 31, 2016, 12:00 PM AKDT
In force
10 hr
Issued by
NWS Anchorage, AK

The text

As transmitted.

778 
WWAK42 PAFC 311006
WSWALU

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
206 AM AKDT THU MAR 31 2016

AKZ155-312000-
/O.UPG.PAFC.ZR.Y.0008.000000T0000Z-160331T1800Z/
/O.NEW.PAFC.IS.W.0001.160331T1006Z-160331T2000Z/
KUSKOKWIM DELTA-
INCLUDING THE CITIES OF...BETHEL...HOOPER BAY...NUNIVAK ISLAND
206 AM AKDT THU MAR 31 2016

...ICE STORM WARNING IN EFFECT UNTIL NOON AKDT TODAY FROM BETHEL
EAST...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED AN ICE STORM
WARNING...WHICH IS IN EFFECT UNTIL NOON AKDT TODAY. THE FREEZING
RAIN ADVISORY IS NO LONGER IN EFFECT. 

* LOCATION...MAINLY FROM BETHEL EAST.

* ICE ACCUMULATION...TWO TO FOUR TENTHS OF AN INCH.

* TIMING...FREEZING RAIN IS EXPECTED TO CONTINUE WHILE AMOUNTS
  INCREASE THROUGH LATE MORNING. PRECIPITATION WILL BECOME LIGHTER
  AND SURFACE TEMPERATURES WILL WARM ABOVE FREEZING IN THE
  AFTERNOON.

* IMPACTS...TRAVEL WILL BE DANGEROUS. ICE ACCUMULATION MAY CAUSE
  DOWNED POWER LINES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL VERY DIFFICULT. TRAVEL IS STRONGLY DISCOURAGED.
COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU MUST TRAVEL...
KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN
CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL LIKELY
LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT ADD TO
THE DANGER.

&&

$$

AKZ152-311200-
/O.CON.PAFC.WW.Y.0012.000000T0000Z-160331T1200Z/
LOWER KUSKOKWIM VALLEY-
INCLUDING THE CITIES OF...ANIAK...SLEETMUTE
206 AM AKDT THU MAR 31 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM AKDT
EARLY THIS MORNING...

* LOCATION...FROM SLEETMUTE WEST

* SNOW...3 TO 7 INCHES.

* ICE ACCUMULATION...UP TO ONE TENTH OF AN INCH.

* TIMING...SNOW WILL CONTINUE FROM SLEETMUTE WEST THROUGH EARLY
  MORNING...WITH TEMPERATURES SLOWLY WARMING ABOVE FREEZING FROM
  SLEETMUTE WESTWARD INTO MORNING. THIS WILL BRING A PROLONGED
  PERIOD OF LIGHT TO MODERATE SNOWFALL THAT WILL BRING SOME DECENT
  ACCUMULATION. BY MORNING TEMPERATURES ARE EXPECTED TO WARM
  ABOVE FREEZING AND SNOW WILL HAVE A HARDER TIME ACCUMULATING
  BEFORE ULTIMATELY TRANSITIONING TO RAIN BY THE AFTERNOON.

* IMPACTS...TRAVEL MAY BE DIFFICULT. VISIBILITIES WILL BE 
  LIMITED IN HEAVY SNOWFALL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
5 follow-up statements
619 
WWAK42 PAFC 311154
WSWALU

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
354 AM AKDT THU MAR 31 2016

AKZ152-311800-
/O.CAN.PAFC.WW.Y.0012.000000T0000Z-160331T1200Z/
/O.NEW.PAFC.ZR.Y.0009.160331T1154Z-160331T1800Z/
LOWER KUSKOKWIM VALLEY-
INCLUDING THE CITIES OF...ANIAK...SLEETMUTE
354 AM AKDT THU MAR 31 2016

...FREEZING RAIN ADVISORY IN EFFECT UNTIL 10 AM AKDT THIS MORNING
WEST OF SLEETMUTE...
...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED A FREEZING
RAIN ADVISORY...WHICH IS IN EFFECT UNTIL 10 AM AKDT THIS MORNING.
THE WINTER WEATHER ADVISORY HAS BEEN CANCELLED. 


* LOCATION...WEST OF SLEETMUTE

* ICE ACCUMULATION...ADDITIONAL ACCUMULATION LESS THAN ONE TENTH
  OF AN INCH.

* TIMING...LIGHT FREEZING RAIN WILL CONTINUE THROUGH THE MID TO
  LATE MORNING HOURS. TEMPERATURES WILL SLOWLY RISE TOWARD
  FREEZING AND WARM ABOVE FREEZING BY LATE MORNING. ANY
  PRECIPITATION THAT FALLS ONCE TEMPERATURES WARM ABOVE FREEZING
  WILL FALL AS RAIN.

* IMPACTS...TRAVEL MAY BE DIFFICULT. BE PREPARED FOR SLIPPERY
  ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

AKZ155-312000-
/O.CON.PAFC.IS.W.0001.000000T0000Z-160331T2000Z/
KUSKOKWIM DELTA-
INCLUDING THE CITIES OF...BETHEL...HOOPER BAY...NUNIVAK ISLAND
354 AM AKDT THU MAR 31 2016

...ICE STORM WARNING REMAINS IN EFFECT UNTIL NOON AKDT TODAY...

* LOCATION...MAINLY FROM BETHEL EAST.

* ICE ACCUMULATION...TWO TO FOUR TENTHS OF AN INCH.

* TIMING...FREEZING RAIN IS EXPECTED TO CONTINUE WHILE AMOUNTS 
  INCREASE THROUGH LATE MORNING. PRECIPITATION WILL BECOME 
  LIGHTER AND SURFACE TEMPERATURES WILL WARM ABOVE FREEZING IN 
  THE AFTERNOON. 

* IMPACTS...TRAVEL WILL BE DANGEROUS. ICE ACCUMULATION MAY CAUSE 
  DOWNED POWER LINES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL VERY DIFFICULT. TRAVEL IS STRONGLY DISCOURAGED.
COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU MUST TRAVEL...
KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN
CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL LIKELY
LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT ADD TO
THE DANGER.

&&

$$
904 
WWAK42 PAFC 311254
WSWALU

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
454 AM AKDT THU MAR 31 2016


AKZ155-312000-
/O.CON.PAFC.IS.W.0001.000000T0000Z-160331T2000Z/
KUSKOKWIM DELTA-
INCLUDING THE CITIES OF...BETHEL...HOOPER BAY...NUNIVAK ISLAND
454 AM AKDT THU MAR 31 2016

...ICE STORM WARNING REMAINS IN EFFECT UNTIL NOON AKDT TODAY...

* LOCATION...MAINLY FROM BETHEL EAST.

* ICE ACCUMULATION...UP TO AN ADDITIONAL TWO TENTHS OF AN INCH.
  STORM TOTAL APPROACHING FOUR TENTHS OF AN INCH.

* TIMING...FREEZING RAIN IS EXPECTED TO CONTINUE WHILE AMOUNTS 
  INCREASE THROUGH LATE MORNING. PRECIPITATION WILL BECOME 
  LIGHTER AND SURFACE TEMPERATURES WILL WARM ABOVE FREEZING IN 
  THE AFTERNOON. 

* IMPACTS...TRAVEL WILL BE DANGEROUS. ICE ACCUMULATION MAY CAUSE 
  DOWNED POWER LINES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL VERY DIFFICULT. TRAVEL IS STRONGLY DISCOURAGED.
COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU MUST TRAVEL...
KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN
CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL LIKELY
LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT ADD TO
THE DANGER.

&&

$$

AKZ152-311800-
/O.CON.PAFC.ZR.Y.0009.000000T0000Z-160331T1800Z/
LOWER KUSKOKWIM VALLEY-
INCLUDING THE CITIES OF...ANIAK...SLEETMUTE
454 AM AKDT THU MAR 31 2016

...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 10 AM AKDT THIS
MORNING WEST OF SLEETMUTE...

* LOCATION...WEST OF SLEETMUTE

* ICE ACCUMULATION...ADDITIONAL ACCUMULATION LESS THAN ONE TENTH 
  OF AN INCH. 

* TIMING...LIGHT FREEZING RAIN WILL CONTINUE THROUGH THE MID TO 
  LATE MORNING HOURS. TEMPERATURES WILL SLOWLY RISE TOWARD 
  FREEZING AND WARM ABOVE FREEZING BY LATE MORNING. ANY 
  PRECIPITATION THAT FALLS ONCE TEMPERATURES WARM ABOVE FREEZING 
  WILL FALL AS RAIN. 

* IMPACTS...TRAVEL MAY BE DIFFICULT. BE PREPARED FOR SLIPPERY 
  ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$
425 
WWAK42 PAFC 311511 AAA
WSWALU

URGENT - WINTER WEATHER MESSAGE...UPDATED
NATIONAL WEATHER SERVICE ANCHORAGE AK
711 AM AKDT THU MAR 31 2016



AKZ155-312000-
/O.CON.PAFC.IS.W.0001.000000T0000Z-160331T2000Z/
KUSKOKWIM DELTA-
INCLUDING THE CITIES OF...BETHEL...HOOPER BAY...NUNIVAK ISLAND
711 AM AKDT THU MAR 31 2016

...ICE STORM WARNING REMAINS IN EFFECT UNTIL NOON AKDT TODAY...

* LOCATION...MAINLY FROM BETHEL EAST.

* ICE ACCUMULATION...UP TO AN ADDITIONAL TWO TENTHS OF AN INCH.
  STORM TOTAL ACCUMULATION UP TO FOUR TENTHS OF AN INCH.

* TIMING...FREEZING RAIN IS EXPECTED TO CONTINUE THROUGH LATE
  MORNING. PRECIPITATION WILL BECOME LIGHTER AND SURFACE
  TEMPERATURES WILL WARM ABOVE FREEZING IN THE AFTERNOON.

* IMPACTS...TRAVEL WILL BE DANGEROUS. ICE ACCUMULATION MAY CAUSE 
  DOWNED POWER LINES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL VERY DIFFICULT. TRAVEL IS STRONGLY DISCOURAGED.
COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU MUST TRAVEL...
KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN
CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL LIKELY
LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT ADD TO
THE DANGER.

&&

$$

AKZ152-311800-
/O.CON.PAFC.ZR.Y.0009.000000T0000Z-160331T1800Z/
LOWER KUSKOKWIM VALLEY-
INCLUDING THE CITIES OF...ANIAK...SLEETMUTE
711 AM AKDT THU MAR 31 2016

...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 10 AM AKDT THIS
MORNING...

* LOCATION...WEST OF SLEETMUTE.

* ICE ACCUMULATION...ADDITIONAL ACCUMULATION LESS THAN ONE TENTH 
  OF AN INCH. 

* TIMING...LIGHT FREEZING RAIN WILL CONTINUE THROUGH THE MID
  MORNING HOURS. TEMPERATURES WILL SLOWLY RISE ABOVE FREEZING BY
  LATE MORNING. ANY PRECIPITATION THAT FALLS ONCE TEMPERATURES
  WARM ABOVE FREEZING WILL FALL AS RAIN.

* IMPACTS...TRAVEL MAY BE DIFFICULT. BE PREPARED FOR SLIPPERY 
  ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$
273 
WWAK42 PAFC 311806
WSWALU

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
1006 AM AKDT THU MAR 31 2016

AKZ152-311915-
/O.EXP.PAFC.ZR.Y.0009.000000T0000Z-160331T1800Z/
LOWER KUSKOKWIM VALLEY-
INCLUDING THE CITIES OF...ANIAK...SLEETMUTE
1006 AM AKDT THU MAR 31 2016

...FREEZING RAIN ADVISORY HAS EXPIRED...

$$

AKZ155-312000-
/O.CON.PAFC.IS.W.0001.000000T0000Z-160331T2000Z/
KUSKOKWIM DELTA-
INCLUDING THE CITIES OF...BETHEL...HOOPER BAY...NUNIVAK ISLAND
1006 AM AKDT THU MAR 31 2016

...ICE STORM WARNING REMAINS IN EFFECT UNTIL NOON AKDT TODAY...

* LOCATION...MAINLY FROM BETHEL EAST.

* ICE ACCUMULATION...UP TO AN ADDITIONAL TWO TENTHS OF AN INCH. 
  STORM TOTAL ACCUMULATION UP TO FOUR TENTHS OF AN INCH. 

* TIMING...FREEZING RAIN IS EXPECTED TO CONTINUE THROUGH LATE 
  MORNING. PRECIPITATION WILL BECOME LIGHTER AND SURFACE 
  TEMPERATURES WILL WARM ABOVE FREEZING IN THE AFTERNOON. 

* IMPACTS...TRAVEL WILL BE DANGEROUS. ICE ACCUMULATION MAY CAUSE 
  DOWNED POWER LINES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL VERY DIFFICULT. TRAVEL IS STRONGLY DISCOURAGED.
COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU MUST TRAVEL...
KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN
CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL LIKELY
LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT ADD TO
THE DANGER.

&&

$$
152 
WWAK42 PAFC 312003
WSWALU

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
1203 PM AKDT THU MAR 31 2016

AKZ155-312115-
/O.EXP.PAFC.IS.W.0001.000000T0000Z-160331T2000Z/
KUSKOKWIM DELTA-
INCLUDING THE CITIES OF...BETHEL...HOOPER BAY...NUNIVAK ISLAND
1203 PM AKDT THU MAR 31 2016

...ICE STORM WARNING HAS EXPIRED...

PRECIPITATION HAS SHIFTED WEST BRINGING AND END TO FREEZING RAIN
ALONG THE EASTERN PORTIONS OF THE KUSKOKWIM DELTA.

$$

What forecasters said that day

The local office's own words before this ice storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Anchorage, AK wrote its last area forecast discussion before this ice storm warning went out at Mar 30, 4:54 PM AKDT, 9 hours 12 minutes earlier.

Area forecast discussion, Mar 30, 4:54 PM AKDT, 9 hours 12 minutes before
SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
454 PM AKDT WED MAR 30 2016

.ANALYSIS AND UPPER LEVELS...

THE UPPER-LEVEL BLOCKING RIDGE REMAINS IN PLACE OVER THE EASTERN
PACIFIC WITH THE RIDGE AXIS EXTENDING NORTHWESTWARD FROM THE
EASTERN GULF THROUGH THE SEWARD PENINSULA. UNDERCUTTING THE RIDGE
TO THE WEST IS A VERTICALLY STACKED NORTH PACIFIC LOW CENTERED
SOUTH OF THE EASTERN ALEUTIANS. THESE TWO FEATURES ARE CREATING A
HIGHLY AMPLIFIED WEATHER PATTERN FOR SOUTHERN ALASKA WITH STRONG
SOUTHERLY FLOW UPSTREAM OF THE RIDGE AXIS. THIS DEEP LAYER
SOUTHERLY FLOW IS CONTINUING TO ADVECT SUBTROPICAL MOISTURE TO THE
SOUTHERN MAINLAND AROUND THE TOP OF THE RIDGE. AS A DIFFUSE
SURFACE WARM FRONT PUSHES NORTHWARD THROUGH THE INTERIOR BRISTOL
BAY REGION AND UP THE WESTERN GULF COAST...SURFACE TEMPERATURES
CONTINUE TO WARM BEHIND THE FRONT. THIS IS ALLOWING FOR A PRIMARY
PRECIPITATION TYPE OF RAIN EAST OF THE KUSKOKWIM MOUNTAINS AND
OVER THE WESTERN GULF COAST INTO THE SUSITNA VALLEY. MEANWHILE
FURTHER WEST NORTHEASTERLY SURFACE FLOW HOLDS ON THROUGH THE
KUSKOKWIM DELTA...KEEPING ENOUGH COLD AIR SOCKED IN AT THE SURFACE
TO KEEP THE PRECIPITATION THIS AFTERNOON AS SNOW NORTHWEST OF THE
KUSKOKWIM MOUNTAINS. THE AFOREMENTIONED SURFACE WARM FRONT EXTENDS
SOUTHWEST THROUGH THE EASTERN BERING SEA AND CENTRAL ALEUTIANS
BRINGING NORTHERLY GALE FORCE WINDS AND RAIN AND SNOW SHOWERS TO
THE ALEUTIANS AND PRIBILOF ISLANDS.

&&

.MODEL DISCUSSION...

MODELS REMAIN IN GOOD AGREEMENT WITH REGARDS TO SYNOPTIC FEATURES.
RECENT OBS AND MODEL RUNS HAVE INDICATED A SLIGHTLY FASTER
NORTHWESTWARD ADVANCEMENT OF THE WARM FRONT THROUGH THE BERING SEA
THIS AFTERNOON INTO TONIGHT...SO HAVE MADE MINOR CHANGES TO SPEED
UP THE PRECIPITATION AND WINDS AS THE FRONT TRACKS WESTWARD
THROUGH THE ALEUTIANS. MINOR DIFFERENCES ARISE IN THE DEVELOPMENT
AND TRACK OF A TRIPLE POINT LOW TRACKING NORTHWARD OVER THE ALASKA
PENINSULA FRI MORNING HOWEVER THE IMPACTS TO THE FORECAST ARE
MINIMAL. A BLEND OF THE NAM AND GFS WAS USED FOR THE FORECAST IN
THE WEST. IN THE EAST...A NAM SOLUTION WAS PREFERRED AS THE NAM
APPEARS TO HAVE THE BEST HANDLE ON THE PRESSURE GRADIENTS LEADING
TO THE GAP WINDS THROUGH SOUTHCENTRAL...WHICH IS THE PRIMARY
FORECAST CHALLENGE OF THE DAY IN THE EAST DOMAIN.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (DAYS 1 AND 2)...

WITH THE FRONTAL SYSTEM CURRENTLY STRETCHED ACROSS THE WEST SIDE
OF COOK INLET AND INTO THE SUSITNA VALLEY...EAST TO SOUTHEASTERLY
GAP WINDS WILL CONTINUE STRONGLY THROUGH THIS EVENING BEFORE
GRADUALLY DIMINISHING OVERNIGHT. THE FRONT WILL CROSS THE
MOUNTAINS AND MOVE INTO SOUTHWEST ALASKA TONIGHT WITH SKIES
CLEARING OUT AS HIGH PRESSURE BUILDS IN ALONG THE NORTHERN GULF
COAST. WHEN AND WHERE FOG WILL FORM OVERNIGHT IS ONE OF THE MAIN
FORECAST CHALLENGES TODAY. THE RECENT RAINFALL...CLEARING SKIES
AND BUILDING UPPER LEVEL RIDGE ALL FAVOR THE FORMATION OF FOG
WHILE THE SOUTHEASTERLY WINDS WILL HELP PREVENT IT OVER ALL BUT
THE NORTHEASTERN GULF COAST WHERE THE SOUTHEAST FLOW BANKS MARINE
AIR UP AGAINST THE MOUNTAINS. THE BIG QUESTION HOWEVER REMAINS IF
THE SOUTHEASTERLY WINDS WILL REMAIN WIDESPREAD ENOUGH THROUGH THE
EARLY MORNING HOURS TO KEEP THINGS ADEQUATELY STIRRED UP AND FOG
PATCHY AND LIMITED UPSLOPE AND WIND SHELTERED AREAS.

THURSDAY CONTINUES TO LOOK LIKE A WARM...DRY AND SUNNY DAY FOR
ALMOST ALL OF SOUTH CENTRAL ALASKA. THE EXCEPTION WILL BE KODIAK
ISLAND WHERE CLOUDS FROM THE NEXT APPROACHING FRONTAL SYSTEM
BEGIN SPREADING NORTH. THE FRONT WILL CROSS KODIAK ISLAND THURSDAY
NIGHT AND CONTINUE NORTH ACROSS THE KENAI PENINSULA EARLY FRIDAY
MORNING AND INTO MAINLAND SOUTHCENTRAL ALASKA DURING THE DAY
FRIDAY.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (DAYS 1 AND 2)...
WARM AND WET CONDITIONS WILL CONTINUE TO PUSH THROUGH THE
SOUTHWEST MAINLAND THIS EVENING AS A WARM FRONT TRAVERSES THE
REGION THROUGH THURSDAY AFTERNOON. RAIN OVER THE BRISTOL BAY AREA
WILL PERSIST THROUGH THURSDAY AFTERNOON...WHEREAS THE SNOW OVER
THE KUSKOKWIM VALLEY AND KUSKOKWIM DELTA WILL GRADUALLY START TO
MIX WITH RAIN LATER TONIGHT. AREAS THAT WILL STAY PREDOMINANTLY
SNOW THROUGH LATE THURSDAY MORNING WILL BE MOSTLY WEST OF
SLEETMUTE AND AREAS FROM BETHEL NORTH AND WEST...WHICH WILL ALSO
SEE THE HIGHEST ACCUMULATION AMOUNTS. ISOLATED POCKETS OF FREEZING
RAIN ARE ALSO EXPECTED THIS EVENING WEST OF SLEETMUTE...AS WARM
AIR CONTINUES TO PUSH NORTHWARD TONIGHT...BRIEFLY OVERRUNNING A
LINGERING COLDER AIRMASS AT THE SURFACE. GUSTY NORTHEASTERLY WINDS
ALONG THE KUSKOKWIM DELTA COAST WILL PERSIST THROUGH LATE
TONIGHT...BEFORE SHIFTING TO THE SOUTHEAST BY THURSDAY MORNING.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (DAYS 1 AND 2)...
NORTH TO NORTHEAST FLOW IS EXPECTED TO CONTINUE OVER MOST OF THE
BERING SEA THROUGH THE SHORT TERM AS THE LARGE RIDGE REMAINS
FIRMLY IN PLACE OVER THE NORTHEASTERN PACIFIC. A WARM FRONT MOVING
THROUGH THE EASTERN AND CENTRAL BERING/ALEUTIANS THIS EVENING
WILL BRING SNOW TO THE PRIBILOF ISLANDS THIS EVENING...AND SPREAD
RAIN WESTWARD ALONG THE EASTERN AND CENTRAL ALEUTIANS THROUGH
TOMORROW MORNING. WITH GALE FORCE GUSTS ALREADY BEING OBSERVED
OVER THE PRIBILOF ISLANDS AND EASTERN ALEUTIANS...AREAS OF
BLOWING SNOW ARE EXPECTED TO DEVELOP OVER THE PRIBILOF ISLANDS
LATER THIS EVENING. WINDS ARE EXPECTED TO DECREASE OVER THE
REGION BY FRIDAY...AS THE GRADIENT WEAKENS OVER MUCH OF THE
REGION.

&&

.LONG TERM FORECAST (DAYS 3 THROUGH 7)...
THE WEEKEND WILL BRING A SLIGHT COOLING TREND TO THE SOUTHERN
MAINLAND AS THE UPPER RIDGE OVERHEAD IS DISPLACED TO THE NORTH AND
EAST...HOWEVER TEMPERATURES WILL STILL REMAIN ABOVE SEASONAL
NORMAL VALUES AND SLOWLY REBOUND THROUGH THE FOLLOWING WEEK AS
BROAD SOUTHERLY FLOW CONTINUES ACROSS THE GULF AND THE RIDGE AXIS
RESIDES JUST NORTH OF THE AREA OVER THE CENTRAL INTERIOR. THE
ONSHORE FLOW WILL ALSO MAINTAIN HIGHER CHANCES FOR PRECIPITATION
ALONG THE GULF COAST...WITH MORE SPORADIC SHOWERY CONDITIONS
INLAND OWING TO DOWNSLOPE FLOW IN THE LEE OF THE COASTAL MOUNTAIN
RANGES. FARTHER WEST...A LONGWAVE TROUGH WILL ENCOMPASS THE BERING
REGION AND KEEP A CHANCE OF PRECIPITATION OVER THE BERING AND
PORTIONS OF THE SOUTHWEST MAINLAND FOR MUCH OF THE NEXT WEEK.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...WSW 152 155.
MARINE...GALES 131 132 173 174 175 176 177 179 180 181 185 352
411 412 413 414.

&&

SYNOPSIS AND MODEL DISCUSSION...KH
SOUTHCENTRAL ALASKA...JR
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...TP
LONG TERM...CB

The office that day

Everything else NWS Anchorage, AK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 31, 3:52 AM AKDTGale WarningAFC36 hr
Mar 31, 3:52 AM AKDTSmall Craft AdvisoryAFC5 days
Mar 31, 3:52 AM AKDTHeavy Freezing Spray WarningAFC23 hr
Mar 31, 3:54 AM AKDTFreezing Rain AdvisoryAFC6 hr
Mar 31, 11:26 AM AKDTSmall Craft AdvisoryAFC16 hr
Mar 31, 3:00 PM AKDTSmall Craft AdvisoryAFC3 days
Mar 31, 3:16 PM AKDTSmall Craft AdvisoryAFC5 days

Nearby

Ice Storm Warnings in Alaska, 2016Every ice storm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.