Weather Alert in Oregon
Heat Advisory issued August 22 at 1:15AM PDT until August 26 at 5:00AM PDT by NWS Portland OR
AREAS AFFECTED: North Oregon Coast Range Lowlands; Central Oregon Coast Range Lowlands; North Oregon Cascades; Cascades of Marion and Linn Counties; Cascades of Lane County; Willapa and Wahkiakum Lowlands; South Washington Cascades
DESCRIPTION: * WHAT...Dangerously hot conditions with high temperatures up to 93-98F and overnight low temperatures of 60-68F possible. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon, North and Central Coast Range Valleys of Oregon, and Willapa and Wahkiakum Lowlands. * WHEN...From 11 AM this morning to 5 AM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, especially for those spending time outdoors or without access to adequate cooling. * ADDITIONAL DETAILS...Friday and Saturday will be the hottest days. Overnight lows as warm as the lower 70s are possible on the mid slopes of the Cascades.
INSTRUCTION: Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
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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
Weather Topic: What are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
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