National Weather Service: Areal Flood Warning , Special Weather Statement
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Airway Heights Current Conditions

Overcast

Airway Heights, WA: 43°

Overcast

Wind: 28 mph from the SSW
Dew Point: 43 °F
Pressure: 29.67 in
Windchill: 33 °F
Humidity: 100%
Visibility: 10.0 miles
Updated: 7:58 PM PST on January 07, 2009
Observed at: Spokane Fairchild, Washington(KSKA)

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5-Day Forecast for ZIP Code 99001

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32° | 25°

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Current: Good PM2.5
   
Wednesday: Good CO
Thursday: Good CO
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Weather History

The lowest temperature reading for North America of -81 degrees was set at Snag, Yukon Territory on February 2, 1947. This value was in jeopardy on this date in 1982 when a reading of -96 degrees was recorded along an Alaskan highway west of Ft. Nelson, British Columbia. While this reading is considered accurate, it was not made official.

Airway Heights Almanac

January 7, 2009
Normal high:32° Record high:54° (1945)
Normal low:21° Record low:-13° (1979)
Sunrise:7:37 AM Moon Rise: 12:30 PM
Sunset:4:16 PM Moon Set: 4:10 AM
Complete weather almanac

Statement as of 5:02 PM PST on January 7, 2009

Areal Flood Warning


... The Flood Warning remains in effect until 300 PM PST Friday for
Spokane and Kootenai counties...

Rain is expected to redevelop Wednesday evening and continue through
Thursday morning. Additional rain amounts up to a half inch are
expected in the Spokane area by late morning. Amounts as high as
three quarters of an inch will be possible for the Coeur D'Alene
area.

The rain combined with water from melting snow has the potential to
cause street flooding for the morning commute. Street flooding could
be enhanced in areas where storm drains are clogged or where snow
berms channel water through the street.

Do not drive your vehicle into areas where the water covers the
roadway. The water depth may be too great to allow your car to cross
safely. Move to higher ground.

To report flooding... have the nearest law enforcement agency relay
your report to the National Weather Service forecast office.

Lat... Lon 4741 11658 4737 11663 4736 11703 4726 11705
      4726 11783 4781 11782 4783 11773 4788 11768
      4779 11759 4780 11753 4804 11753 4804 11704
      4797 11703 4799 11651 4788 11649 4788 11633
      4742 11633


Gkoch



Statement as of 3:35 PM PST on January 7, 2009

Special Weather Statement


... More rain and wind on the way tonight into Thursday...

The critical period for increasing snow Load has passed... peaking
sometime early Wednesday morning... and should stabilize or more
likely decrease for most locations below 4000 feet msl as above
freezing temperatures... brisk southwest winds and rainfall allow
melting and shedding to occur. Most roofs with any degree of pitch
should continue to shed snow-melt into Thursday... further
decreasing the snow Load. Liquid rainfall amounts expected tonight
into Thursday afternoon will range from one half inch over
northeast Washington to one inch near Pullman and much of the
Idaho Panhandle.

It is important to note that that flat and low sloped roofs will
continue to be susceptible to snow loads due to the accumulation
of melt water and possible blockage hindering drainage.






700 am PST Wed Jan 7 2009

... Snow loading on roof tops a major concern today...

Snow loading on flat and low sloped roofs will continue to intensify
today and into tonight as rainfall continues to soak into heavy snow
pack. Over the next 24 hours an additional half to three quarters of
an inch of rain will fall over extreme eastern Washington including
the Spokane area and onto the Palouse. An additional 1 to 2 inches
is possible over north Idaho... with the heaviest amounts expected
over the mountains and into the Silver Valley. The rainfall will
continue into Thursday.

The deep... heavy snow cover has caused numerous roof failures in the
Spokane Metro area... and the problem of snow loading could get worse
during the 24 hours. Outside the Spokane Metro... deep snow-pack is
also prevalent near Cheney... Deer Park... Davenport... Bonners
Ferry... Sandpoint... and Kellogg areas.

According to the city of Spokane... structures with flat roofs
will be the most prone to heavy snow loading. The roof drains on
flat or low-slope buildings are easily blocked by ice... and may
not drain properly. The addition of rain onto snow can be
especially problematic for flat roofs because snow can absorb the
rain... increasing the Load on the structure. Snow loads on sloped
roofs will begin to improve as rapid runoff develops during the day.
For more information on snow loading in Spokane visit
www.Spokanecity.Org and click on "prevent roof
collapse"... and... "more plowing... ice scraping set for tuesday".










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