Weather Alert in Oregon
Fire Weather Watch issued July 6 at 1:40PM PDT until July 8 at 11:00PM PDT by NWS Pendleton OR
AREAS AFFECTED: Central Mountains of Oregon; Southern Deschutes National Forest
DESCRIPTION: ...DRY THUNDERSTORMS EXPECTED FOR TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR ABUNDANT LIGHTNING FOR THE CENTRAL MOUNTAINS OF OREGON AND SOUTHERN DESCHUTES NATIONAL FOREST... .The ridge of high pressure is anticipated to break down Tuesday afternoon with a dry cold front making its way into the region. Ahead of the front, instability is expected to increase along with an influx of mid-level moisture. This will lead to convection along the central mountains of Oregon and through the southern Deschutes National Forest Tuesday afternoon. Dry thunderstorms will be isolated. The National Weather Service in Pendleton has issued a Fire Weather Watch for abundant lightning, which is in effect from Tuesday afternoon through Tuesday evening. * AFFECTED AREA...Fire Weather Zones 700 Central Mountains of Oregon and 705 Southern Deschutes National Forest. * TIMING...From Tuesday afternoon through Tuesday 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 45 mph.
INSTRUCTION: A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
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Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
Weather Topic: What is Condensation?
Home - Education - Precipitation - Condensation
Next Topic: Contrails
Condensation is the process which creates clouds, and therefore
it is a crucial process in the water cycle.
Condensation is the change of matter from a state of gas into a state of liquid,
and it happens because water molecules release heat into the atmosphere and
become organized into a more closely packed structure, what we might see as
water droplets.
Water is always present in the air around us as a vapor, but it's too small for
us to see. When water undergoes the process of condensation it becomes organized
into visible water droplets. You've probably seen condensation happen before on the
surface of a cold drink!
Next Topic: Contrails
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