Gale Warning 135, NWS Juneau, AK

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
536 AM AKDT Wed Apr 8 2020

.SHORT TERM...The surface low is moving east-northeast over the
northern Gulf of Alaska while slowly weakening. The low is
expected to move onshore just south of Yakutat and then reform in
northwest Canada. The associated front to move through the
panhandle today was just offshore Yakutat early Wednesday morning.
Heavy snow started falling before midnight at Yakutat and started
every early Wednesday over northern Lynn Canal. Winter storm
warnings presently in effect are still looking good at the moment.

Rain and snow is falling across the rest of the northern and
central panhandle as expected. Visibilities to 3 miles or less in
snow and or heavy rain and ceilings vary between 700 ft and 2500
ft for much of the panhandle are being reported for the start of
Wednesday.

The atmospheric river which is supplying the moisture for the
precipitation is expected to move southeast to exit the southern
panhandle late Wednesday evening. The feature is quick moving so
QPF values will be limited with 1 to 2 inches of rain possible.
Should be some lingering showers over the central panhandle from
flow about the low near Yakuatat late Wednesday into Thursday and
then those showers will end as well with clearing from the
development of the surface ridge over the western and central gulf
into the southern central portion of the state. Continue to see
decreasing clouds through Thursday night.

.LONG TERM.../Friday through Wednesday/...As of 10 PM
Tuesday...Mid level blocking ridge that becomes established over
the AK Gulf Thursday night into Friday expected to remain in place
through at least the weekend and possibly into the start of next
week. Still fair amount of model differences as they do not handle
the timing of ridge break downs and impact of up stream waves
well. Expect the panhandle to remain dry due to surface high over
the gulf. Any waves for the weekend look to remain to the west of
the region. Northerly and weak outflow winds expected to shift
southerly Sunday into Sunday night. This flow pattern change will
usher in warmer air mass to the region. 850 mb Temp standard
deviation of +2-3 C for the weekend. Large diurnal temperature
swings for the start of the long range due to relatively clear
skies with additional day time heating and nocturnal radiational
cooling with temps. Highs low 40s to possible low 50s with lows
initially in the low 20s and possibly lower for higher elevations
and far northern areas then warming into the upper 20s to mid
30s. Break down of the ridge possible Monday into Tuesday with
next chance of precipitation moving into the Gulf followed by more
active weather pattern. Kept with ensemble solutions for the long
range with forecast confidence being low due to models having
issues with timing of ridge break down.

&&

.AJK Watches/Warnings/Advisories...
PUBLIC...Strong Wind from 10 AM this morning to 4 PM AKDT this afternoon
     for AKZ027.
     Strong Wind until 4 PM AKDT this afternoon for AKZ025.
     Strong Wind until 1 PM AKDT this afternoon for AKZ023.
     Winter Storm Warning until 4 PM AKDT this afternoon for AKZ018-
     019.
     Winter Storm Warning until 10 AM AKDT this morning for AKZ017.
MARINE...Gale Warning for PKZ036-041>043-051-052.
     Small Craft Advisory for PKZ011>013-021-022-031>035-053.

&&

Bezenek/PRB

Visit us at http://www.weather.gov/Juneau

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JUNEAU AK
849 AM AKDT WED APR 8 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0730 AM     HEAVY SNOW       YAKUTAT                 59.55N 139.73W
04/08/2020  M7.5 INCH                           AK   NWS EMPLOYEE

            STORM TOTAL SNOW FALL AS OF 730 AM AT YAKUTAT.

&&

EAL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JUNEAU AK
949 AM AKDT WED APR 8 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     SNOW             HAINES CUSTOMS          0.00N 59.45E
04/08/2020  M3.5 INCH        XXX                XX   CO-OP OBSERVER

            3.5 INCHES OF NEW SNOW AT HAINES CUSTOMS STATION AT 7 AM.

0800 AM     HEAVY SNOW       HAINES                  59.24N 135.45W
04/08/2020  M7.1 INCH                           AK   CO-OP OBSERVER

            SNOW TOTAL AT HAINES COOP SITE ENDING AT 8 AM.

0830 AM     NON-TSTM WND DMG TEE HARBOR              58.41N 134.76W
04/08/2020                                      AK   UTILITY COMPANY

            TREE TOOK OUT POWER POLE AT TEE HARBOR. IT CAUSED POWER
            OUTAGE FROM LENA POINT NORTHWARD.

0900 AM     SNOW             GUSTAVUS                58.41N 135.74W
04/08/2020  E3.5 INCH                           AK   TRAINED SPOTTER

            ESTIMATE OF AROUND 3.5 TO 4 INCHES OF SLUSHLY SNOW.

0920 AM     HEAVY SNOW       MUD BAY                 59.16N 135.36W
04/08/2020  M7.0 INCH                           AK   TRAINED SPOTTER

            TOTAL SNOWFALL IN THE LAST 7 HOURS FROM MUD BAY.

&&

EAL

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE JUNEAU AK
1012 AM AKDT WED APR 8 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0920 AM     HEAVY SNOW       MUD BAY                 59.16N 135.36W
04/08/2020  M7.5 INCH                           AK   TRAINED SPOTTER

            TOTAL SNOWFALL IN THE LAST 7 HOURS FROM MUD BAY.

&&

EAL

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