Weather Alert in Idaho
Air Stagnation Advisory issued February 7 at 12:22PM MST until February 8 at 10:00AM MST by NWS Boise ID
AREAS AFFECTED: Lower Treasure Valley; Upper Treasure Valley; Western Magic Valley; Upper Weiser River; Oregon Lower Treasure Valley
DESCRIPTION: * WHAT...High pressure aloft with light surface winds and little vertical mixing will continue the period of stagnant air through tomorrow morning. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of south central and southwest Idaho and southeast Oregon. * WHEN...Until 10 AM MST /9 AM PST/ Sunday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
INSTRUCTION: Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air.
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Weather Topic: What is Fog?
Home - Education - Cloud Types - Fog
Next Topic: Fractus Clouds
Fog is technically a type of stratus cloud, which lies along the
ground and obscures visibility.
It is usually created when humidity in the air condenses into tiny water droplets.
Because of this, some places are more prone to foggy weather, such as regions
close to a body of water.
Fog is similar to mist; both are the appearance of water droplets suspended in
the air, but fog is the term applied to the condition when visibility is less than 1 km.
Next Topic: Fractus Clouds
Weather Topic: What is Freezing Rain?
Home - Education - Precipitation - Freezing Rain
Next Topic: Graupel
Freezing rain is a condition where precipitation which has fallen in the form of
water droplets reaches temperatures which are below freezing and freezes upon
coming into contact
with surface objects. The result of this precipitation is a glaze of ice which
can be damaging to plants and man-made structures. A severe onset of freezing
rain which results in a very thick glaze of ice is known as an ice storm.
Next Topic: Graupel
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