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New Jersey & Delaware & and SE Pennsylvania Warnings, Watches, And Advisories Winter Weather Advisory
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Winter Weather Advisory
In effect:
Tuesday, Apr 21 2026 3:06 AM PDT – Tuesday, Apr 21 2026 11:00 AM PDT
Issued by NWS Medford OR
WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING
What:
Snow. Additional snow accumulations 2 to 4 inches.
Snow. Additional snow accumulations 2 to 4 inches.
Where:
The higher terrain of southern Siskiyou County near the
Trinity Alps. This includes Highway 3 south of Callahan.
The higher terrain of southern Siskiyou County near the
Trinity Alps. This includes Highway 3 south of Callahan.
When:
Until 11 AM PDT this morning.
Until 11 AM PDT this morning.
Impacts:
Travel may be very difficult. The hazardous conditions
could impact the Monday evening and Tuesday morning commutes.
Gusty winds could bring down tree branches.
Travel may be very difficult. The hazardous conditions
could impact the Monday evening and Tuesday morning commutes.
Gusty winds could bring down tree branches.
Additional Details:
Visit weather.gov/mfr/winter for snow
probabilities.
Visit weather.gov/mfr/winter for snow
probabilities.
Instructions:
Slow down and use caution while traveling. Call 511 or visit
quickmap.dot.ca.gov for road information.
Slow down and use caution while traveling. Call 511 or visit
quickmap.dot.ca.gov for road information.
Areas Impacted:
Western Siskiyou County
Central Siskiyou County
South Central Siskiyou County
Winter Weather Advisory
In effect:
Wednesday, Apr 22 2026 12:00 PM MDT – Thursday, Apr 23 2026 11:00 PM MDT
Issued by NWS Riverton WY
WINTER WEATHER ADVISORY IN EFFECT FROM NOON WEDNESDAY TO 11 PM MDT THURSDAY
What:
Snow expected. Total snow accumulations between 6 and 12
inches with the highest amounts across southwestern portions of
the Park. Winds gusting as high as 40 mph.
Snow expected. Total snow accumulations between 6 and 12
inches with the highest amounts across southwestern portions of
the Park. Winds gusting as high as 40 mph.
Where:
Yellowstone National Park.
Yellowstone National Park.
When:
From noon Wednesday to 11 PM MDT Thursday.
From noon Wednesday to 11 PM MDT Thursday.
Impacts:
Travel could be very difficult.
Travel could be very difficult.
Instructions:
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For current road conditions across Yellowstone National Park, visit
https://nps.gov/yellowstone .
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For current road conditions across Yellowstone National Park, visit
https://nps.gov/yellowstone .
Areas Impacted:
Yellowstone National Park
Winter Weather Advisory
In effect:
Wednesday, Apr 22 2026 12:00 PM MDT – Thursday, Apr 23 2026 11:00 PM MDT
Issued by NWS Riverton WY
WINTER WEATHER ADVISORY IN EFFECT FROM NOON WEDNESDAY TO 11 PM MDT THURSDAY
What:
Snow expected. Total snow accumulations generally between 6
and 12 inches with locally higher amounts to 18 inches across the
Tetons. Winds gusting as high as 45 mph.
Snow expected. Total snow accumulations generally between 6
and 12 inches with locally higher amounts to 18 inches across the
Tetons. Winds gusting as high as 45 mph.
Where:
Teton and Gros Ventre Mountains.
Teton and Gros Ventre Mountains.
When:
From noon Wednesday to 11 PM MDT Thursday.
From noon Wednesday to 11 PM MDT Thursday.
Impacts:
Travel could be very difficult, including over Teton
Pass and Togwotee Pass.
Travel could be very difficult, including over Teton
Pass and Togwotee Pass.
Instructions:
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
Areas Impacted:
Teton and Gros Ventre Mountains
Winter Weather Advisory
In effect:
Wednesday, Apr 22 2026 12:00 PM MDT – Thursday, Apr 23 2026 11:00 PM MDT
Issued by NWS Riverton WY
WINTER WEATHER ADVISORY IN EFFECT FROM NOON WEDNESDAY TO 11 PM MDT THURSDAY
What:
Snow expected. Total snow accumulations of 5 to 10 inches.
Winds gusting as high as 50 mph.
Snow expected. Total snow accumulations of 5 to 10 inches.
Winds gusting as high as 50 mph.
Where:
Salt River and Wyoming Ranges.
Salt River and Wyoming Ranges.
When:
From noon Wednesday to 11 PM MDT Thursday.
From noon Wednesday to 11 PM MDT Thursday.
Impacts:
Travel could be difficult, including over Salt River
Pass.
Travel could be difficult, including over Salt River
Pass.
Instructions:
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
Areas Impacted:
Salt River and Wyoming Ranges
Winter Weather Advisory
In effect:
Wednesday, Apr 22 2026 12:00 AM MDT – Thursday, Apr 23 2026 6:00 AM MDT
Issued by NWS Pocatello ID
WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM MDT THURSDAY ABOVE 6500 FEET ELEVATION
What:
Snow expected ABOVE 6500 FEET ELEVATION. Total snow
accumulations between 1 and 10 inches. Winds gusting as high as 40
mph.
Snow expected ABOVE 6500 FEET ELEVATION. Total snow
accumulations between 1 and 10 inches. Winds gusting as high as 40
mph.
Where:
Big Lost Highlands/Copper Basin, Frank Church Wilderness,
Lost River Range, Sawtooth/Stanley Basin, and Sun Valley Region.
Big Lost Highlands/Copper Basin, Frank Church Wilderness,
Lost River Range, Sawtooth/Stanley Basin, and Sun Valley Region.
When:
From midnight tonight to 6 AM MDT Thursday.
From midnight tonight to 6 AM MDT Thursday.
Impacts:
Plan on slippery road conditions. The hazardous
conditions could impact the travel Wednesday.
Plan on slippery road conditions. The hazardous
conditions could impact the travel Wednesday.
Instructions:
Slow down and use caution while traveling. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.
Slow down and use caution while traveling. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.
Areas Impacted:
Lost River Range
Frank Church Wilderness
Sawtooth/Stanley Basin
Sun Valley Region
Big Lost Highlands/Copper Basin
Winter Weather Advisory
In effect:
Wednesday, Apr 22 2026 12:00 PM MDT – Friday, Apr 24 2026 12:00 AM MDT
Issued by NWS Pocatello ID
WINTER WEATHER ADVISORY IN EFFECT FROM NOON WEDNESDAY TO MIDNIGHT MDT THURSDAY NIGHT ABOVE 6500 FEET ELEVATION
What:
Snow expected ABOVE 6500 FEET ELEVATION. Total snow
accumulations between 2 and 14 inches. Winds gusting as high as 40
mph.
Snow expected ABOVE 6500 FEET ELEVATION. Total snow
accumulations between 2 and 14 inches. Winds gusting as high as 40
mph.
Where:
Big Hole Mountains, Centennial Mountains - Island Park,
Bear River Range, and Caribou Range.
Big Hole Mountains, Centennial Mountains - Island Park,
Bear River Range, and Caribou Range.
When:
From noon Wednesday to midnight MDT Thursday Night.
From noon Wednesday to midnight MDT Thursday Night.
Impacts:
Travel could be very difficult. The hazardous conditions
could impact travel from Wednesday afternoon through Thursday
evening.
Travel could be very difficult. The hazardous conditions
could impact travel from Wednesday afternoon through Thursday
evening.
Instructions:
Slow down and use caution while traveling. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.
Slow down and use caution while traveling. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.
Areas Impacted:
Bear River Range
Caribou Range
Big Hole Mountains
Centennial Mountains/Island Park
Winter Weather Advisory
In effect:
Tuesday, Apr 21 2026 5:00 AM PDT – Wednesday, Apr 22 2026 5:00 PM PDT
Issued by NWS Reno NV
WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM PDT WEDNESDAY
What:
Heavy snow above 6500 feet. Snow accumulations of 4 to 10
inches above 6500 feet with 12 to 18 inches along highest mountain
peaks. 1 to 4 inches of snow possible at lake level, highest on
the western shores. Wind gusts of 30 to 35 mph across lower
elevations, including Lake Tahoe where wave heights reach 1 to 3
feet. Ridgetop winds gusting up to 90 mph at times.
Heavy snow above 6500 feet. Snow accumulations of 4 to 10
inches above 6500 feet with 12 to 18 inches along highest mountain
peaks. 1 to 4 inches of snow possible at lake level, highest on
the western shores. Wind gusts of 30 to 35 mph across lower
elevations, including Lake Tahoe where wave heights reach 1 to 3
feet. Ridgetop winds gusting up to 90 mph at times.
Where:
Greater Lake Tahoe Area.
Greater Lake Tahoe Area.
When:
From 5 AM early this morning to 5 PM PDT Wednesday.
From 5 AM early this morning to 5 PM PDT Wednesday.
Impacts:
Travel could be very difficult through Sierra passes.
The hazardous conditions could impact the Tuesday and Wednesday
commutes. Strong winds could cause damage to trees and power lines.
Travel could be very difficult through Sierra passes.
The hazardous conditions could impact the Tuesday and Wednesday
commutes. Strong winds could cause damage to trees and power lines.
Additional Details:
Heaviest snowfall expected late today morning
through this afternoon. Heavier snow showers could result in
locally greater snow totals. Isolated lightning is also possible
along the Sierra crest today and Wednesday afternoons.
Heaviest snowfall expected late today morning
through this afternoon. Heavier snow showers could result in
locally greater snow totals. Isolated lightning is also possible
along the Sierra crest today and Wednesday afternoons.
Instructions:
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
Areas Impacted:
Greater Lake Tahoe Area
Greater Lake Tahoe Area
Winter Weather Advisory
In effect:
Tuesday, Apr 21 2026 5:00 AM PDT – Wednesday, Apr 22 2026 5:00 PM PDT
Issued by NWS Reno NV
WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM PDT WEDNESDAY
What:
Heavy snow above 7000 feet. Snow accumulations of 6 to 12
inches above 7000 feet with up to 18 inches on highest mountain
peaks. 1 to 5 inches of snow possible for communities along
Highway 395. Southerly wind gusts of 40 to 50 mph across lower
elevations with gusts up to 60 mph in wind prone locations. Wind
gusts up to 90 mph along ridges.
Heavy snow above 7000 feet. Snow accumulations of 6 to 12
inches above 7000 feet with up to 18 inches on highest mountain
peaks. 1 to 5 inches of snow possible for communities along
Highway 395. Southerly wind gusts of 40 to 50 mph across lower
elevations with gusts up to 60 mph in wind prone locations. Wind
gusts up to 90 mph along ridges.
Where:
Mono County.
Mono County.
When:
From 5 AM early this morning to 5 PM PDT Wednesday.
From 5 AM early this morning to 5 PM PDT Wednesday.
Impacts:
Travel could be very difficult through Sierra passes.
The hazardous conditions could impact today and Wednesday
commutes. Strong winds could cause damage to trees and power lines.
Travel could be very difficult through Sierra passes.
The hazardous conditions could impact today and Wednesday
commutes. Strong winds could cause damage to trees and power lines.
Additional Details:
Strong and gusty winds are anticipated today
with potentially damaging winds this afternoon. Heaviest snowfall
expected late this morning through this afternoon. Locally greater
snow totals are possible with heavier snow showers. Isolated
lightning is also possible along the Sierra crest today and
Wednesday afternoons.
Strong and gusty winds are anticipated today
with potentially damaging winds this afternoon. Heaviest snowfall
expected late this morning through this afternoon. Locally greater
snow totals are possible with heavier snow showers. Isolated
lightning is also possible along the Sierra crest today and
Wednesday afternoons.
Instructions:
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
Areas Impacted:
Mono
Winter Weather Advisory
In effect:
Monday, Apr 20 2026 8:51 PM PDT – Tuesday, Apr 21 2026 11:00 AM PDT
Issued by NWS Eureka CA
WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY
What:
Snow expected. Total snow accumulations between 4 and 6
inches.
Snow expected. Total snow accumulations between 4 and 6
inches.
Where:
Northeastern Trinity.
Northeastern Trinity.
When:
Until 11 AM PDT Tuesday.
Until 11 AM PDT Tuesday.
Impacts:
Plan on slippery road conditions. The hazardous
conditions will impact the Tuesday morning commute.
Plan on slippery road conditions. The hazardous
conditions will impact the Tuesday morning commute.
Instructions:
Slow down and use caution while traveling. The latest road conditions
for the state you are calling from can be obtained by calling 5 1 1.
Slow down and use caution while traveling. The latest road conditions
for the state you are calling from can be obtained by calling 5 1 1.
Areas Impacted:
Northeastern Trinity
Winter Weather Advisory
In effect:
Tuesday, Apr 21 2026 4:00 PM AKDT – Wednesday, Apr 22 2026 10:00 AM AKDT
Issued by NWS Anchorage AK
WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM TUESDAY TO 10 AM AKDT WEDNESDAY
What:
Snow and blowing snow expected. Total snow accumulations up
to 7 inches. Winds gusting as high as 40 mph. Visibility reduced
to 1/2 mile or less at times.
Snow and blowing snow expected. Total snow accumulations up
to 7 inches. Winds gusting as high as 40 mph. Visibility reduced
to 1/2 mile or less at times.
Where:
Nunivak Island and western Kuskokwim Delta coast including
Toksook Bay.
Nunivak Island and western Kuskokwim Delta coast including
Toksook Bay.
When:
From 4 PM Tuesday to 10 AM AKDT Wednesday.
From 4 PM Tuesday to 10 AM AKDT Wednesday.
Impacts:
Visibilities reduced to one half mile or less due to
blowing snow. Travel could be very difficult.
Visibilities reduced to one half mile or less due to
blowing snow. Travel could be very difficult.
Additional Details:
A frontal boundary moving northward across
the Bering will bring a light to moderate snowfall rates beginning
Tuesday afternoon. Snowfall will begin first over Mekoryuk, with
stronger winds and gusts moving in overnight into Wednesday
morning. Nunivak Island will see the most pronounced impacts from
snow and winds, however Toksook Bay will see similar conditions by
Tuesday evening. Areas further inland and south are expected to
remain outside the core of the winds and moisture.
A frontal boundary moving northward across
the Bering will bring a light to moderate snowfall rates beginning
Tuesday afternoon. Snowfall will begin first over Mekoryuk, with
stronger winds and gusts moving in overnight into Wednesday
morning. Nunivak Island will see the most pronounced impacts from
snow and winds, however Toksook Bay will see similar conditions by
Tuesday evening. Areas further inland and south are expected to
remain outside the core of the winds and moisture.
Instructions:
Slow down and use caution while traveling.
Slow down and use caution while traveling.
Areas Impacted:
Kuskokwim Delta Coast and Nunivak Island
Winter Weather Advisory
In effect:
Monday, Apr 20 2026 10:00 PM AKDT – Tuesday, Apr 21 2026 10:00 PM AKDT
Issued by NWS Fairbanks AK
WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 PM AKDT TUESDAY
What:
Snow and blowing snow expected. Total snow accumulations of
1 to 3 inches in the valleys and 3 to 6 inches across higher
elevations. Winds gusting as high as 30 mph.
Snow and blowing snow expected. Total snow accumulations of
1 to 3 inches in the valleys and 3 to 6 inches across higher
elevations. Winds gusting as high as 30 mph.
Where:
Central and Eastern Interior.
Central and Eastern Interior.
When:
From 10 PM this evening to 10 PM AKDT Tuesday.
From 10 PM this evening to 10 PM AKDT Tuesday.
Impacts:
Travel could be difficult at times. Areas of falling and
or blowing snow could significantly reduce visibility, with icy
surface conditions also possible. The hazardous conditions could
impact the Tuesday morning and evening commutes.
Travel could be difficult at times. Areas of falling and
or blowing snow could significantly reduce visibility, with icy
surface conditions also possible. The hazardous conditions could
impact the Tuesday morning and evening commutes.
Additional Details:
A cold front moving west to east across the
Interior tonight through Tuesday will support moderate to heavy
bands of snow and gusty winds. Conditions are expected to improve
west to east throughout the day Tuesday as a colder and drier
airmass moves in. Overnight lows Tuesday night into Wednesday
morning will be much colder than previous days, dropping for most
to the single digits above and below zero.
A cold front moving west to east across the
Interior tonight through Tuesday will support moderate to heavy
bands of snow and gusty winds. Conditions are expected to improve
west to east throughout the day Tuesday as a colder and drier
airmass moves in. Overnight lows Tuesday night into Wednesday
morning will be much colder than previous days, dropping for most
to the single digits above and below zero.
Instructions:
Slow down and use caution while traveling. Visit 511.alaska.gov or
call 5 1 1 for the latest road conditions.
Slow down and use caution while traveling. Visit 511.alaska.gov or
call 5 1 1 for the latest road conditions.
Areas Impacted:
White Mountains and High Terrain South of the Yukon River
Delta Junction
Upper Chena River Valley
Tanana Flats
Eielson AFB and Salcha
Goldstream Valley and Nenana Hills
Chatanika River Valley
Two Rivers
Fairbanks Metro Area
Nenana
Central Interior
Northern Denali Borough
Southern Denali Borough
Eastern Alaska Range North of Trims Camp
Eastern Alaska Range South of Trims Camp