Bellevue, WA Weather Alerts

* WHAT...Hot conditions with temperatures in the upper 80s and 90s
expected. This will pose a moderate to major risk of heat-related
illness.

* WHERE...Portions of northwest and west central Washington.

* WHEN...From noon Friday to 10 PM PDT Monday.

* IMPACTS...This level of heat will significantly increase the risk
of heat-related illnesses for much of the population, especially
those who are heat sensitive and those without effective cooling
or adequate hydration.

* ADDITIONAL DETAILS...Temperatures will remain well above normal
next week with only gradual cooling expected.

The NOAA Space Weather Prediction Center has observed extreme (G5)
geomagnetic conditions early Saturday morning and expects severe
(G4) conditions to continue through the weekend.

A geomagnetic storm of this strength can cause multiple and
widespread issues with various power and communications systems.
Widespread voltage control problems may occur, and some power grid
systems may experience component failures, disruption of service,
and protective device trips. This could result in blackouts.

GPS and other satellite navigation may be degraded for days.

HF/VHF/UHF radio propagation may be impossible in many areas for
one to two days.

Low-frequency radio navigation can be out for hours.

Aurora may be visible at much lower latitudes.

For space weather information...visit www.swpc.noaa.gov
For weather information...visit www.weather.gov

A strong frontal system moving across the area today will continue
to bring moderate to heavy rainfall to western Washington and
possible flooding.

* WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...Portions of northwest and west central Washington,
including the following counties, in northwest Washington, Grays
Harbor. In west central Washington, King, Lewis, Pierce and
Thurston.

* WHEN...Through Thursday afternoon.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
- A rising snow level, moderate to heavy rain, and to a lesser
degree low- to mid-elevation snowmelt will potentially
produce enough runoff to cause minor flooding of some streams
and rivers. The Olympics and Cascades could see an additional
2-4 inches of rain, with some locally higher amounts
possible. With the snow level having risen to above 4000
feet, expect rises on area rivers. However, there is still a
fair amount of uncertainty on which rivers will flood based
on snow level changes, precipitation type and amount, and
snowmelt.
- http://www.weather.gov/safety/flood

Rainfall of one to five inches over the past few days has increased
soil moisture to high levels across western Washington. Heavy
rainfall of up to 1 to 3 inches is expected through Wednesday,
especially in the higher elevations.

This amount of rain will put extra pressure on soil instability,
leading to an increased threat of landslides.

Two landslides have already been reported in various locations in
western Washington including the Leschi neighborhood in Seattle and
near Union. More landslides are possible.

For more information about current conditions, visit
www.weather.gov/seattle, select Hydrology, and then scroll down
for the links to the landslide information pages.

For more information on landslides, visit the website for the
Washington State Department of Natural Resources landslide
geologic hazards at: http://bit.ly/2mtA3wn

Rainfall of one to five inches over the past three days has
increased soil moisture to high levels across western Washington.
Heavy rainfall of one to three inches is expected over the next
several days.

This amount of rain will put extra pressure on soil instability,
leading to an increased threat of landslides.

Two landslides have already been reported in various locations in
western Washington including the Leschi neighborhood in Seattle and
near Union. More landslides are possible.

For more information about current conditions, visit
www.weather.gov/seattle, select Hydrology, and then scroll down
for the links to the landslide information pages.

For more information on landslides, visit the website for the
Washington State Department of Natural Resources landslide
geologic hazards at: http://bit.ly/2mtA3wn

* WHAT...Mixed precipitation, mostly freezing rain. Additional
ice accumulations of a light glaze.

* WHERE...Portions of northwest and west central Washington.

* WHEN...Until 6 AM PST early this morning.

* IMPACTS...Plan on slippery road conditions.

* WHAT...Southwest winds 25 to 35 mph with gusts up to 45 mph
expected.

* WHERE...Everett and Vicinity, Tacoma Area, Bellevue and
Vicinity and Seattle and Vicinity.

* WHEN...From 4 AM to 10 PM PST Tuesday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.

...AFTER A RELATIVELY MILD WINTER THUS FAR, THE POTENTIAL EXISTS FOR
THE COLDEST TEMPERATURES OF THE SEASON JANUARY 12-15, 2024...


An active weather pattern will continue to impact the region
through at least the next week as a series of strong frontal
systems bring additional rounds of lowland rain and mountain snow
to Western Washington. Heavy snow will slowly decrease in
intensity through the Olympics and Cascades this morning as snow
transitions into snow showers. After a brief break Sunday into
Sunday night, prolonged heavy snow is becoming increasingly likely
Monday through Thursday as a series of systems move across the
Pacific Northwest. Current forecast snowfall totals of 2 to 5
feet over 2000 feet will be possible through this timeframe.
Currently, there is a 50-80% chance for 48-hour snowfall totals in
excess of 30 inches over the Cascades above 2500 feet, including
Stevens and Snoqualmie passes. In addition, westerly winds will
increase during this time, with gusts to around 40 mph and even
higher over the high Cascades Tuesday with a 65% chance for peak
wind gusts over 50 mph. Anyone with travel plans over the Cascade
passes and/or through the rest of the Cascades and Olympic
mountains will need to be well prepared for dangerous travel
conditions due to a combination of heavy and blowing snow.

The potential also exists for much colder temperatures across
Western Washington by the second half of the week as a much colder
airmass settles into the Pacific Northwest. Uncertainty still
exists in how cold this airmass will be with disagreement in how
far south high pressure penetrates out of southern Canada.
Currently, there is a 50% chance for the low temperatures to drop
below 20F Thursday night through Saturday night across the
lowlands. After a relatively mild start to the winter season,
these temperatures will come as a drastic change to many. While
the details remain unclear, it is worth monitoring the forecast
for potential changes and additional information over the next
several days.

For more information about current conditions and forecasts,
visit www.weather.gov/seattle.

...AFTER A RELATIVELY MILD WINTER THUS FAR, THE POTENTIAL EXISTS FOR
THE COLDEST TEMPERATURES OF THE SEASON JANUARY 12-15, 2024...


An active weather pattern will continue to impact the region
through at least the next week as a series of strong frontal
systems bring additional rounds of lowland rain and mountain snow
to Western Washington. Heavy snow will slowly decrease in
intensity through the Olympics and Cascades this morning as snow
transitions into snow showers. After a brief break Sunday into
Sunday night, prolonged heavy snow is becoming increasingly likely
Monday through Thursday as a series of systems move across the
Pacific Northwest. Current forecast snowfall totals of 2 to 5
feet over 2000 feet will be possible through this timeframe.
Currently, there is a 50-80% chance for 48-hour snowfall totals in
excess of 30 inches over the Cascades above 2500 feet, including
Stevens and Snoqualmie passes. In addition, westerly winds will
increase during this time, with gusts to around 40 mph and even
higher over the high Cascades Tuesday with a 65% chance for peak
wind gusts over 50 mph. Anyone with travel plans over the Cascade
passes and/or through the rest of the Cascades and Olympic
mountains will need to be well prepared for dangerous travel
conditions due to a combination of heavy and blowing snow.

The potential also exists for much colder temperatures across
Western Washington by the second half of the week as a much colder
airmass settles into the Pacific Northwest. Uncertainty still
exists in how cold this airmass will be with disagreement in how
far south high pressure penetrates out of southern Canada.
Currently, there is a 50% chance for the low temperatures to drop
below 20F Thursday night through Saturday night across the
lowlands. After a relatively mild start to the winter season,
these temperatures will come as a drastic change to many. While
the details remain unclear, it is worth monitoring the forecast
for potential changes and additional information over the next
several days.

For more information about current conditions and forecasts,
visit www.weather.gov/seattle.

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...San Juan County, Southwest Interior, Everett and
Vicinity, Tacoma Area, Admiralty Inlet Area, Hood Canal Area,
Eastern Strait of Juan de Fuca, Bellevue and Vicinity, Seattle
and Vicinity and Bremerton and Vicinity.

* WHEN...Until noon PST today.

* IMPACTS...Hazardous driving conditions due to low visibility.