Alert archive / Alaska / Winter Storm Warnings in 2024

Winter Storm Warning 13, NWS Juneau, AK

November 4, 2024Skagway Municipality, Alaska

NWS Juneau, AK issued this winter storm warning at Nov 4, 2024, 1:34 PM AKST for Skagway Municipality, Alaska. It took effect at Nov 5, 2024, 9:00 AM AKST. It was in force for 12 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
Nov 4, 2024, 1:34 PM AKST (22:34 UTC)
In effect from
Nov 5, 2024, 9:00 AM AKST
Expired
Nov 5, 2024, 9:00 PM AKST
In force
12 hr
Issued by
NWS Juneau, AK

County Skagway Municipality, AK

The nearest sounding before it

Yakutat, (PYAK), launched 12:00Z, 10.6 hours before the alert went out and 242 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Yakutat, at 12:00Z on 2024-11-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Yakutat, at 12:00Z on 2024-11-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
623 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

938 
WWAK47 PAJK 042234
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
134 PM AKST Mon Nov 4 2024

...SNOW FOR THE KLONDIKE HIGHWAY...

.Warm air aloft and southwesterly flow is expected to move over 
colder air at the surface. This overrunning is expected to bring 
accumulating snow to the northern panhandle, specifically the Klondike
highway. Warmer air close to the surface is expected to move in 
and allow for a switch to a mix of rain and snow.

AKZ318-050645-
/O.NEW.PAJK.WS.W.0013.241105T1800Z-241106T0600Z/
Municipality of Skagway-
Including the cities of Skagway and White Pass
134 PM AKST Mon Nov 4 2024

...WINTER STORM WARNING IN EFFECT FROM 9 AM TO 9 PM AKST
TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 9 
  inches. Winds gusting as high as 40 mph.

* WHERE...Klondike Highway.

* WHEN...From 9 AM to 9 PM AKST Tuesday.

* IMPACTS...Travel will be very difficult.

* ADDITIONAL DETAILS...Snow is expected to start out lighter and
  fluffier before becoming more wet and heavy Tuesday night into
  Wednesday. Only minor snow accumulations are expected in
  Skagway.
  


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water
with you in case of an emergency. 

People are urged to prepare their property before the onset of
winter weather.

For the latest road conditions, where available, call 5 1 1 or
visit 511.alaska.gov.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/juneau
4 follow-up statements
295 
WWAK47 PAJK 050622
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
922 PM AKST Mon Nov 4 2024

...SNOW FOR THE KLONDIKE HIGHWAY...

.Warm air aloft and southwesterly flow is expected to move over
colder air at the surface. This overrunning is expected to bring
accumulating snow to the northern panhandle, specifically the
Klondike highway. Warmer air close to the surface is expected to
move in and allow for a switch to a mix of rain and snow.

AKZ318-051430-
/O.CON.PAJK.WS.W.0013.241105T1800Z-241106T0600Z/
Municipality of Skagway-
Including the cities of Skagway and White Pass
922 PM AKST Mon Nov 4 2024

...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM TO 9 PM AKST
TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 9 
  inches. Winds gusting as high as 40 mph.

* WHERE...Klondike Highway.

* WHEN...From 9 AM to 9 PM AKST Tuesday.

* IMPACTS...Travel will be very difficult.

* ADDITIONAL DETAILS...Snow is expected to start out lighter and 
  fluffier before becoming more wet and heavy Tuesday night into 
  Wednesday. Only minor snow accumulations are expected in 
  Skagway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water
with you in case of an emergency.

People are urged to prepare their property before the onset of
winter weather.

For the latest road conditions, where available, call 5 1 1 or
visit 511.alaska.gov.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/juneau
091 
WWAK47 PAJK 051326
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
426 AM AKST Tue Nov 5 2024

...SNOW FOR THE KLONDIKE HIGHWAY...

.Warm air aloft and southwesterly flow is expected to move over
colder air at the surface. This overrunning is expected to bring
accumulating snow to the northern panhandle, specifically the
higher elevations of the Klondike Highway. Warmer air close to 
the surface is expected to move in and allow for a switch to a mix
of rain and snow near sea level.

AKZ318-060000-
/O.CON.PAJK.WS.W.0013.241105T1800Z-241106T0600Z/
Municipality of Skagway-
Including the cities of Skagway and White Pass
426 AM AKST Tue Nov 5 2024

...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 9 PM AKST THIS EVENING...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 9 
  inches. Winds gusting as high as 40 mph.

* WHERE...Klondike Highway above 1500 feet.

* WHEN...From 9 AM to 9 PM AKST Tuesday.

* IMPACTS...Travel will be very difficult.

* ADDITIONAL DETAILS...Snow is expected to start out lighter and
  fluffier on Tuesday before becoming more wet and heavy by
  Tuesday evening. Little or no snow accumulation is expected in 
  Skagway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water
with you in case of an emergency.

People are urged to prepare their property before the onset of
winter weather.

For the latest road conditions, where available, call 5 1 1 or
visit 511.alaska.gov.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/juneau
845 
WWAK47 PAJK 052334
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
234 PM AKST Tue Nov 5 2024

...SNOW FOR THE KLONDIKE HIGHWAY...

.Warm air aloft and southwesterly flow is expected to move over
colder air at the surface. This overrunning is expected to bring
accumulating snow to the northern panhandle, specifically the
higher elevations of the Klondike Highway. Warmer air close to
the surface is expected to move in and allow for a switch to a
mix of rain and snow near sea level.

AKZ318-060600-
/O.CON.PAJK.WS.W.0013.000000T0000Z-241106T0600Z/
Municipality of Skagway-
Including the cities of Skagway and White Pass
234 PM AKST Tue Nov 5 2024

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM AKST THIS
EVENING...

* WHAT...Heavy snow. Additional snow accumulations of up to 6 
  inches. Winds gusting as high as 40 mph.

* WHERE...Municipality of Skagway.

* WHEN...Until 9 PM AKST this evening.

* IMPACTS...Travel will be very difficult.

* ADDITIONAL DETAILS...Snow is expected to start out lighter and
  fluffier on Tuesday before becoming more wet and heavy by
  Tuesday evening. Little or no snow accumulation is expected in 
  Skagway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water
with you in case of an emergency. 

People are urged to prepare their property before the onset of
winter weather.

For the latest road conditions, where available, call 5 1 1 or
visit 511.alaska.gov.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/juneau
225 
WWAK47 PAJK 060537
WSWAJK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Juneau AK
837 PM AKST Tue Nov 5 2024


AKZ318-060645-
/O.EXP.PAJK.WS.W.0013.000000T0000Z-241106T0600Z/
Municipality of Skagway-
Including the cities of Skagway and White Pass
837 PM AKST Tue Nov 5 2024

...WINTER STORM WARNING WILL EXPIRE AT 9 PM AKST THIS EVENING...

Snow rates have slowed with snow density becoming increasingly 
wet. Rising snow levels with little to no additional accumulating
snow is expected over the next few hours. As snow levels begin to
drop early in the morning Wednesday, an additional 2 to 3 inches 
of dense, wet snow is expected.

$$

For more information from the National Weather Service visit
https://weather.gov/juneau

What forecasters said that day

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

NWS Juneau, AK wrote its last area forecast discussion before this winter storm warning went out at Nov 4, 5:27 AM AKST, 8 hours 7 minutes earlier.

Area forecast discussion, Nov 4, 5:27 AM AKST, 8 hours 7 minutes before
Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
527 AM AKST Mon Nov 4 2024

.SHORT TERM.../Through Monday night/ Quiet morning across the
panhandle as most of the area is caught between two systems. One
low is south of the panhandle over Hecate Strait and heading into
British Columbia. The other is the dieing low near Prince William
Sound. Between the two is onshore westerly flow and scattered
showers.

Generally the quiet weather is expected to last through Monday
night as a flatter ridge builds in from the west across the Gulf.
Showers across the panhandle are expected to linger today (with
a lingering slight chance of thunderstorm along the NE Gulf coast
this morning), but diminish in frequency and intensity Monday
night.

Signs of change are coming late tonight across the gulf however,
as the initial effects of the next front start to make them selves
known. Winds will be increasing to gale force and the initial
rain bands will be moving in to the central gulf by late Monday
night. The current forecast has suggested a faster speed to the
next front by around 6 hours or so compared to the previous
forecast mainly due to the front being pushed east by a 120 kt 500
mb jet. Even with that increase in frontal speed the winds and
rain with it are still not expected to arrive in the panhandle
until Tuesday.

.LONG TERM.../Tuesday through next week/...The forecast for this
week remains largely unchanged. The big story will be the heavy
rain across parts of the panhandle Tuesday through Friday as a
series of systems move across through the area.

The first system - a storm force front - will weaken as it enters
the panhandle on Tuesday, though still anticipate strong winds for
many communities, especially those along the outer coast and in
the southern panhandle. A trailing atmospheric river in the wake
of the system will move across the southern panhandle Tuesday and
Wednesday, bringing with it widespread heavy rainfall. Amounts of
between 1 - 2 inches of rain are expected near sea level on
Tuesday across the southern half of the panhandle, with 2-5 inches
for Wednesday. Another system racing northward will bring with it
an additional 0.5 to 2 inches of rain for Thursday, and higher
rainfall totals in general are possible for areas of elevation.
Lower rainfall totals are expected for the northern half of the
panhandle. The primary concern with this event is primarily
rainfall duration as opposed to rainfall rate. River rises are
anticipated, but no flooding is expected at this time, although
the situation will be closely monitored in the event that updates
become necessary.

With regards to the potential for snowfall, anticipate that it
will be confined to the Haines and Klondike Highways for any snow
or snow dominant mix when precip from the first front arrives. Overall
expecting temperatures aloft to warm up enough to limit snow
accumulation aside from near the Canadian border, with substandard
lift and less favorable snow ratios likely to help cap snow
totals, though this will need to be monitored and evaluated
further over the next few days.

Winds in the outer coastal waters and across ocean entrances will
reach gale force intensity, with a few areas in the central gulf
and the northern gulf reaching storm force as the first system
arrives. Winds in the inner channels will pick up to small craft
on Tuesday, before diminishing across the northern and central
inner channels to some extent on Wednesday.

&&

.AVIATION...Conditions continue to improve as rain exits the
panhandle. We will continue to see times of MVFR through this
morning into early afternoon before all areas improve to VFR
ceilings and visibilities. With the departing rain there is a higher
chance of seeing areas of broken fog during the morning hours.
Decreasing winds and breaks in the clouds will also help to increase
fog chances. Locations with fog will most likely stay MVFR, but
could decrease to IFR ceilings or visibilities for short periods of
time.

&&

.MARINE...Quiet marine weather through Monday evening then the
effects of the next front will start making themselves known.
Winds across the gulf expected to increase to gale and even storm
force (northern gulf) late Monday night into Tuesday and those
winds will spread into the inner channels by Tuesday afternoon.
Expect widespread 25 to 30 kt winds in the inner channels with a
few areas likely seeing gale force winds as well. Seas in the gulf
will be on the increase with this front, likely reaching 20 ft
Tuesday afternoon. Initial front moves through rather quickly and
winds and seas are expected to diminish area wide by late Tuesday
night.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Gale Warning for PKZ652-672.
     Small Craft Advisory for PKZ022-053-641>644-651-661>664-671.

&&

SHORT TERM...EAL
LONG TERM....GFS/STJ
AVIATION...EAB

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

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 4, 3:27 AM AKSTGale WarningAJK24 hr
Nov 4, 3:27 AM AKSTSmall Craft AdvisoryAJK11 hr
Nov 4, 3:28 AM AKSTGale WarningAJK35 hr
Nov 4, 2:48 PM AKSTGale WarningAJK48 hr
Nov 4, 2:48 PM AKSTGale WarningAJK24 hr
Nov 4, 2:48 PM AKSTSmall Craft AdvisoryAJK5 days

Nearby

Winter Storm Warnings in Alaska, 2024Every winter storm warning in 2024

Sources

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