Weather Alert in Alaska
Special Weather Statement issued September 7 at 4:24PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Central Aleutians
DESCRIPTION: Ex-typhoon Peipah will lift to the Central Aleutians this evening. There will be two separate peaks of strong winds. One this evening with easterly gusts up to 60 mph at times and the last peak, stronger, Monday morning with northerly gusts around 65 mph at times. A few localized gusts up to 70 mph are possible late Monday morning. There will be a break in strong winds early Monday morning as the low pressure center moves by just to the south and east with northerly winds picking up in earnest on the backside of the system mid-Monday morning. Accompanying the strong winds will be moderate to heavy rain this evening through Monday with rainfall totals 2 inches this evening through Monday night. Winds will significantly decrease starting Monday night and into Tuesday. Residents should secure loose items that can easily be blown around or damaged. Prepare for possible power outages. Travel may be difficult.
INSTRUCTION: N/A
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Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
Weather Topic: What are Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds
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