Weather Alert in Alaska
High Wind Warning issued August 28 at 3:42PM AKDT until August 28 at 10:00PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Lower Matanuska Valley
DESCRIPTION: * WHAT...Southeast winds 15 to 25 mph with gusts up to 60 mph. * WHERE...Palmer and Butte. * WHEN...Until 10 PM AKDT this evening. * IMPACTS...High winds may move loose debris, damage property, and cause power outages. Trees are still fully leafed, and will be particularly vulnerable to damage in strong winds. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The strongest wind gusts have likely already peaked early this afternoon, but gusts as strong as 60 mph will remain possible over the next few hours near Palmer and Butte. Winds will then slowly diminish through late this evening.
INSTRUCTION: People are urged to secure loose objects that could be blown around or damaged by the wind. Prepare for the possibility of widespread power outages. Use caution if you must drive.
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Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
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