KORSHERW28

...DRY THUNDERSTORMS EXPECTED TODAY AND WEDNESDAY OVER CENTRAL
AND EASTERN OREGON, WITH DRY AND WINDY CONDITIONS ACROSS THE
COLUMBIA BASIN WEDNESDAY...

.The ridge of high pressure currently in place over the Pacific
Northwest will break down tonight through Wednesday as a pair of
upper-level low-pressure systems pass over the region. This will
lead to thunderstorm development across central and eastern
Oregon Tuesday afternoon and evening, and across eastern Oregon
Wednesday afternoon and evening. Widespread breezy to windy
conditions will persist this evening through Wednesday, strongest
through the Cascade gaps and Columbia Basin on Wednesday with a
frontal passage.

* AFFECTED AREA...Fire Weather Zones 696 John Day Valley, 700
Central Mountains of Oregon and 705 Southern Deschutes
National Forest.

* TIMING...Until 11 PM PDT this evening.

* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.

* THUNDERSTORMS...Storms are mostly expected to be dry with
rainfall amounts less than a tenth of an inch, though a few
storms could produce rainfall amounts in excess of a tenth of
an inch.

* OUTFLOW WINDS...As high as 60 mph.

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

...DRY THUNDERSTORMS EXPECTED TODAY AND WEDNESDAY OVER CENTRAL
AND EASTERN OREGON, WITH DRY AND WINDY CONDITIONS ACROSS THE
COLUMBIA BASIN WEDNESDAY...

.The ridge of high pressure currently in place over the Pacific
Northwest will break down tonight through Wednesday as a pair of
upper-level low-pressure systems pass over the region. This will
lead to thunderstorm development across central and eastern
Oregon Tuesday afternoon and evening, and across eastern Oregon
Wednesday afternoon and evening. Widespread breezy to windy
conditions will persist this evening through Wednesday, strongest
through the Cascade gaps and Columbia Basin on Wednesday with a
frontal passage.

* AFFECTED AREA...Fire Weather Zones 691 Lower Columbia Basin of
Oregon and 691 Lower Columbia Basin of Washington.

* TIMING...From 11 AM to 10 PM PDT Wednesday.

* WINDS...West 20 to 30 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low 18 to 23 percent.

* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

The National Weather Service in Medford has cancelled the Red
Flag Warning for this evening. The thunderstorms that developed
earlier across the north have moved away from the area. So, the
Red Flag Warning for this evening is cancelled.

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 9 PM PDT
WEDNESDAY FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER
ZONES 624 AND 625...

* AFFECTED AREA...In Oregon...eastern portions of fire zone 624
and fire zone 625. This includes the Fremont National Forest,
including from Silver Lake southward to Bly, as well as most of
Lake County.

* THUNDERSTORMS...Isolated to scattered thunderstorms. Lightning
strikes outside of precipitation cores are possible, and cause
for concern for new fire starts. Isolated dry thunderstorms (10-
15% chance) are also possible.

* OUTFLOW WINDS...Gusts of 35 to 55 mph could travel outward up
to 25 miles from thunderstorm cores.

* DETAILED URL...View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr

Follow all fire restrictions. You can find your county's
emergency sign up form as well as links to fire restrictions at
weather.gov/medford/wildfire. One less spark, one less wildfire.

Be sure you're signed up for your county's emergency alert
system. Familiarize yourself with your emergency plan and make
sure you listen to emergency services. Visit ready.gov/plan for
more information.

A Red Flag Warning is issued when we identify weather conditions
that promote rapid spread of fire which may become life-
threatening. This does not mean there is a fire. These conditions
are either occurring now or will begin soon. It is important to
have multiple ways to receive information from authorities.

...DRY THUNDERSTORMS EXPECTED TODAY AND WEDNESDAY OVER CENTRAL
AND EASTERN OREGON, WITH DRY AND WINDY CONDITIONS ACROSS THE
COLUMBIA BASIN WEDNESDAY...

.The ridge of high pressure currently in place over the Pacific
Northwest will break down tonight through Wednesday as a pair of
upper-level low-pressure systems pass over the region. This will
lead to thunderstorm development across central and eastern
Oregon Tuesday afternoon and evening, and across eastern Oregon
Wednesday afternoon and evening. Widespread breezy to windy
conditions will persist this evening through Wednesday, strongest
through the Cascade gaps and Columbia Basin on Wednesday with a
frontal passage.

* AFFECTED AREA...Fire Weather Zone 698 Southern Blue Mountains.

* TIMING...From 2 PM to 11 PM PDT Wednesday.

* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.

* THUNDERSTORMS...Storms are mostly expected to be dry with
rainfall amounts less than a tenth of an inch, though a few
storms could produce rainfall amounts in excess of a tenth of
an inch.

* OUTFLOW WINDS...As high as 55 mph.

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

...SCATTERED THUNDERSTORMS OVER SOUTHEAST OREGON WITH GUSTY WINDS
ON WEDNESDAY EVENING...

A frontal passage will bring isolated to scattered thunderstorms
with minimal precipitation over the BLM districts of Southwest
Idaho and Southeast Oregon. Strong outflow winds up to 55 MPH
is possible.

The National Weather Service in Boise has issued a Red Flag
Warning for lightning, which is in effect from 3 PM MDT /2 PM
PDT/ Wednesday to midnight MDT /11 PM PDT/ Wednesday night. The
Fire Weather Watch is no longer in effect.

* AFFECTED AREA...In Oregon, Fire Weather Zones 670 Burns BLM,
672 Southern Grasslands, 673 Central Canyonlands and 674
Northwestern Vale BLM.

* TIMING...From 3 PM MDT /2 PM PDT/ Wednesday to midnight MDT
/11 PM PDT/ Wednesday night.

* THUNDERSTORMS...Scattered.

* OUTFLOW WINDS...Gusty and erratic winds up to 55 mph.

* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will occur shortly.

* WHAT...Hot conditions with temperatures up to 105 degrees
expected. This will pose a major risk of heat-related illness.

* WHERE...Lower Columbia Basin of Oregon and Washington, Foothills
of the Northern Blue Mountains of Oregon, Yakima Valley, and
Foothills of the Blue Mountains of Washington.

* WHEN...From 11 AM to 9 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses. Extreme 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.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when possible.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

For sheltering information and other human services in your area,
dial 2 1 1 during business hours or visit 211info.org for Oregon or
wa211.org for Washington anytime.