...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and Wednesday.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon, 690 Kittitas Valley, 691 Lower Columbia Basin, 694
Yakama Alpine District and 695 East Washington South Central
Cascade Mountains.
* TIMING...11 PM through 5 PM.
* WINDS...North 5 to 10 mph.
* RELATIVE HUMIDITY...As low as 13 percent.
* TEMPERATURES...Up to 101.
* IMPACTS...Any new fire starts will exhibit extreme fire
behavior. Current fire on landscape will also exhibit extreme
fire behavior.
* HAINES...As high as 6.
* THUNDERSTORMS...Isolated to scattered thunderstorms are
possible.
* OUTFLOW WINDS...35 to 40 mph.
...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and Wednesday.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon, 690 Kittitas Valley, 691 Lower Columbia Basin, 694
Yakama Alpine District and 695 East Washington South Central
Cascade Mountains.
* TIMING...11 PM through 5 PM.
* WINDS...North 5 to 10 mph.
* RELATIVE HUMIDITY...As low as 13 percent.
* TEMPERATURES...Up to 101.
* IMPACTS...Any new fire starts will exhibit extreme fire
behavior. Current fire on landscape will also exhibit extreme
fire behavior.
* HAINES...As high as 6.
* THUNDERSTORMS...Isolated to scattered thunderstorms are
possible.
* OUTFLOW WINDS...35 to 40 mph.
...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and Wednesday.
* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central
Oregon Cascades, 611 Deschutes National Forest -minus Sisters
Ranger District, 639 East Slopes of the Northern Oregon
Cascades and 640 Central Mountains of Oregon.
* IMPACTS...Any lightning strikes combined with hot and dry
conditions could cause new fire starts.
* THUNDERSTORMS...Isolated to scattered dry thunderstorms are
possible.
* OUTFLOW WINDS...35 to 40 mph.
...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and Wednesday.
* AFFECTED AREA...Fire Weather Zone 642 Southern Blue and
Strawberry Mountains.
* TIMING...Until 11 PM.
* WINDS...South 5 mph or less.
* RELATIVE HUMIDITY...As low as 11 percent.
* TEMPERATURES...Up to 93.
* IMPACTS...Any new fire starts will exhibit extreme fire
behavior. Current fire on landscape will also exhibit extreme
fire behavior.
* HAINES...As high as 6.
* WHAT...Daytime temperatures between 95 to 100 expected. Overnight
lows between 65 to 70 will limit chances to recover from the heat
Tuesday night.
* WHERE...In Oregon, Central Columbia River Gorge I-84 Corridor,
East Portland Metro, Inner Portland Metro, and West Columbia River
Gorge I-84 Corridor. In Washington, Central Columbia River Gorge
SR 14 Corridor, East Clark County Lowlands, Inner Vancouver Metro,
and West Columbia River Gorge SR 14 Corridor.
* WHEN...Until 8 AM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* WHAT...Daytime temperatures between 95 to 100 expected. Overnight
lows between 65 to 70 will limit chances to recover from the heat
Tuesday night.
* WHERE...In Oregon, Central Columbia River Gorge I-84 Corridor,
East Portland Metro, Inner Portland Metro, and West Columbia River
Gorge I-84 Corridor. In Washington, Central Columbia River Gorge
SR 14 Corridor, East Clark County Lowlands, Inner Vancouver Metro,
and West Columbia River Gorge SR 14 Corridor.
* WHEN...Until 8 AM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and Wednesday.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon, 690 Kittitas Valley, 691 Lower Columbia Basin, 694
Yakama Alpine District and 695 East Washington South Central
Cascade Mountains.
* TIMING...2 PM through 11 PM.
* WINDS...North 5 to 10 mph.
* RELATIVE HUMIDITY...As low as 13 percent.
* TEMPERATURES...Up to 101.
* IMPACTS...Any new fire starts will exhibit extreme fire
behavior. Current fire on landscape will also exhibit extreme
fire behavior.
* HAINES...As high as 6.
* THUNDERSTORMS...Isolated to scattered thunderstorms are
possible.
* OUTFLOW WINDS...35 to 40 mph.
...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and Wednesday.
* AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of
Oregon, 690 Kittitas Valley, 691 Lower Columbia Basin, 694
Yakama Alpine District and 695 East Washington South Central
Cascade Mountains.
* TIMING...2 PM through 11 PM.
* WINDS...North 5 to 10 mph.
* RELATIVE HUMIDITY...As low as 13 percent.
* TEMPERATURES...Up to 101.
* IMPACTS...Any new fire starts will exhibit extreme fire
behavior. Current fire on landscape will also exhibit extreme
fire behavior.
* HAINES...As high as 6.
* THUNDERSTORMS...Isolated to scattered thunderstorms are
possible.
* OUTFLOW WINDS...35 to 40 mph.
...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and Wednesday.
* AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central
Oregon Cascades, 611 Deschutes National Forest -minus Sisters
Ranger District, 639 East Slopes of the Northern Oregon
Cascades and 640 Central Mountains of Oregon.
* IMPACTS...Any lightning strikes combined with hot and dry
conditions could cause new fire starts.
* THUNDERSTORMS...Isolated to scattered dry thunderstorms are
possible.
* OUTFLOW WINDS...35 to 40 mph.
...ISOLATED THUNDERSTORMS AND DRY, UNSTABLE CONDITIONS THIS
AFTERNOON, OVERNIGHT, AND WEDNESDAY...
A low pressure system will move north-northeastward into the
Pacific Northwest late today through Wednesday night. This system
will provide enough moisture and elevated instability for high-
based showers and isolated thunderstorms to develop late this
afternoon, overnight, and Wednesday.
* AFFECTED AREA...Fire Weather Zone 642 Southern Blue and
Strawberry Mountains.
* TIMING...2 PM through 11 PM.
* WINDS...South 5 mph or less.
* RELATIVE HUMIDITY...As low as 11 percent.
* TEMPERATURES...Up to 93.
* IMPACTS...Any new fire starts will exhibit extreme fire
behavior. Current fire on landscape will also exhibit extreme
fire behavior.
* HAINES...As high as 6.
...SCATTERED THUNDERSTORMS THROUGH THIS EVENING FOR ZONE 636, AND
WEDNESDAY AFTERNOON AND EARLY EVENING FOR ZONE 426...
* Thunderstorms...Scattered coverage with little to no rainfall
expected.
* Outflow Winds...Up to 60 mph possible.
* Timing...Until 11 PM PDT this evening.
The National Weather Service in Seattle has issued a Red Flag
Warning for dry thunderstorms and gusty outflow winds, which is
in effect from 8 AM to 11 PM PDT Wednesday. The Fire Weather
Watch is no longer in effect.
* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North
Cascades Generally above 1500 Feet.
* THUNDERSTORMS...Scattered thunderstorms with LAL 3 are expected
to develop along and near the crest of the Cascades as early as
late morning and most likely during the afternoon and evening
hours.
* OUTFLOW WINDS...Gusty and erratic winds are possible in the
vicinity of any thunderstorms that develop.
* IMPACTS...Scattered lightning in dry fuels can cause multiple
fire starts. Thunderstorms can also bring sudden sharp wind
shifts on existing fires, causing rapid changes in a fire's
rate of spread and direction of spread. Thunderstorm outflow
winds can be a threat for several hours following the start of
a new lightning-caused fire. If a fire were to begin, air
quality may diminish in the surrounding area.
The National Weather Service in Seattle has issued a Red Flag
Warning for dry thunderstorms and gusty outflow winds, which is
in effect from 8 AM to 11 PM PDT Wednesday. The Fire Weather
Watch is no longer in effect.
* AFFECTED AREA...Fire Weather Zone 659 West Slopes of the
Central Cascades Generally above 1500 Feet.
* THUNDERSTORMS...Scattered thunderstorms with LAL 3 are expected
to develop along and near the crest of the Cascades as early as
late morning and most likely during the afternoon and evening
hours.
* OUTFLOW WINDS...Gusty and erratic winds are
possible in the vicinity of any thunderstorms that develop.
* IMPACTS...Scattered lightning in dry fuels can cause multiple
fire starts. Thunderstorms can also bring sudden sharp wind
shifts on existing fires, causing rapid changes in a fire's
rate of spread and direction of spread. Thunderstorm outflow
winds can be a threat for several hours following the start of
a new lightning-caused fire. If a fire were to begin, air
quality may diminish in the surrounding area.
The National Weather Service in Seattle has issued a Red Flag
Warning for dry thunderstorms and gusty outflow winds, which is
in effect from 8 AM to 11 PM PDT Wednesday.
* AFFECTED AREA...Fire Weather Zone 652 West Portion of the
Olympic Mountains and Fire Weather Zone 661 East Portion of
the Olympic Mountains.
* THUNDERSTORMS...Scattered thunderstorms with LAL 3 are expected
to develop early as late morning and most likely during the
afternoon and evening hours.
* OUTFLOW WINDS...Gusty and erratic winds are
possible in the vicinity of any thunderstorms that develop.
* IMPACTS...Scattered lightning in dry fuels can cause multiple
fire starts. Thunderstorms can also bring sudden sharp wind
shifts on existing fires, causing rapid changes in a fire's
rate of spread and direction of spread. Thunderstorm outflow
winds can be a threat for several hours following the start of
a new lightning-caused fire. If a fire were to begin, air
quality may diminish in the surrounding area.
Scattered thunderstorms containing little to no rainfall will be
possible over much of North Central Washington Wednesday
afternoon and evening. Any thunderstorms have the potential to
produce gusty outflow winds that could travel quite a distance
from the thunderstorm source. Isolated thunderstorms are possible
elsewhere across Eastern Washington and North Idaho.
The National Weather Service in Spokane has issued a Red Flag
Warning for abundant lightning, which is in effect from 11 AM
Wednesday to midnight PDT Wednesday night. The Fire Weather Watch
is no longer in effect.
* Affected Area: Fire Weather Zone 696 East Washington Central
Cascades, Fire Weather Zone 697 East Portion of North Cascades
National Park/Lake Chelan National Recreation Area, Fire Weather
Zone 698 East Washington North Cascades, Fire Weather Zone 699
Okanogan Highlands and Kettle Mountains, Fire Weather Zone 702
Colville Reservation, Fire Weather Zone 703 Okanogan Valley,
Fire Weather Zone 704 Methow Valley, Fire Weather Zone 705
Foothills of Central Washington Cascades and Fire Weather Zone
706 Waterville Plateau.
* Thunderstorms: Scattered thunderstorms with abundant lightning,
LAL 6.
* Outflow Winds: Gusty and erratic winds are possible with any
thunderstorms that develop. The outflow winds could travel quite
a distance from the core of the storm.
* Impacts: Thunderstorms containing little to no rain combined
with dry fuels will lead to the potential for new fire starts
that may overwhelm initial attack capabilities. Gusty winds with
thunderstorms will result in rapid fire spread with any new or
existing fires.
Scattered thunderstorms containing little to no rainfall will be
possible over much of North Central Washington Wednesday
afternoon and evening. Any thunderstorms have the potential to
produce gusty outflow winds that could travel quite a distance
from the thunderstorm source. Isolated thunderstorms are possible
elsewhere across Eastern Washington and North Idaho.
The National Weather Service in Spokane has issued a Red Flag
Warning for thunderstorms, which is in effect from noon Wednesday
to midnight Wednesday night.
* Affected Area: Fire Weather Zone 707 Western Columbia Basin
and Fire Weather Zone 708 Eastern Columbia Basin - Palouse
-Spokane Area.
* Haines: High level haines of 6, which is very high. This means
very dry and unstable conditions exist.
* Humidity: 12 to 19 percent.
* Outflow Winds: Gusty and erratic winds are possible with any
thunderstorms that develop. Gusty winds from thunderstorms that
develop over the Cascades and north central Washington could
send an outflow boundary across the Columbia Basin, Palouse and
Spokane area.
* Thunderstorms: Thunderstorm coverage at this time looks to be
isolated across the Basin, Palouse and Spokane area.
* Impacts: Unstable conditions could lead to plume dominated
fires. Rapid fire spread with any new or existing fires due to
the gusty wind potential. These conditions may overwhelm
initial attack capabilities.
The National Weather Service in Portland has issued a Red Flag
Warning for thunderstorms, which is in effect from 11 PM this
evening to 5 PM PDT Wednesday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...In Washington, Fire Weather Zone 634 Southern
Gifford Pinchot National Forest and Fire Weather Zone 635 Mt.
Adams Ranger District of the Gifford-Pinchot National Forest.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
* IMPACTS...Lightning and critically dry fuels may result in
numerous fire starts. Thunderstorm outflow winds may result in
erratic fire spread.
* IMPACTS...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.
The National Weather Service in Portland has issued a Red Flag
Warning for thunderstorms, which is in effect from 11 PM this
evening to 11 AM PDT Wednesday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...In Washington, Fire Weather Zone 633 Clark
County Lowlands and Swift Reservoir Region and Fire Weather
Zone 636 Western Columbia River Gorge in Oregon and Washington.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
* IMPACTS...Lightning and critically dry fuels may result in
numerous fire starts. Thunderstorm outflow winds may result in
erratic fire spread.
* IMPACTS...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.
The National Weather Service in Portland has issued a Red Flag
Warning for thunderstorms, which is in effect from 11 PM this
evening to 11 AM PDT Wednesday.
* AFFECTED AREA...In Washington, Fire Weather Zone 632 Cowlitz
County Foothills.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
* IMPACTS...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.
The National Weather Service in Portland has issued a Red Flag
Warning for thunderstorms, which is in effect from 5 PM this
afternoon to 8 AM PDT Wednesday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...In Oregon, Fire Weather Zone 684 Northern and
Central Willamette Valley, Fire Weather Zone 686 Northern
Oregon Cascade Foothills and Fire Weather Zone 688 Mt. Hood
National Forest Region.
* THUNDERSTORMS...Isolated to scattered thunderstorms.
* IMPACTS...Lightning and critically dry fuels may result in
numerous fire starts.
* OUTFLOW WINDS...There is a 10% chance for wind gusts in excess
of 50 mph from the strongest storms through this evening.
* IMPACTS...Frequent lightning and critically dry fuels may
result in numerous fire starts. Thunderstorm outflow winds may
result in erratic fire spread.