Weather Alert in Alaska
Hydrologic Outlook issued August 28 at 2:02PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Anchorage; Anchorage Hillside / Eagle River; East Turnagain Arm; Portage; Lower Matanuska Valley; Hatcher Pass; Sutton / Upper Matanuska Valley; Eureka / Tahneta Pass; Southern Kachemak Bay; SW Kenai Peninsula; NW Kenai Peninsula; Skilak Lake; Southern Kenai Mtns; Interior Kenai Peninsula; Turnagain Pass; West Prince William Sound & Whittier; Tyonek; Valdez; Thompson Pass; Cordova; Western Susitna Valley; Southern Susitna Valley; Central Susitna Valley; Northern Susitna Valley
DESCRIPTION: ESFAFC Rainfall * Eastern Kenai Peninsula and Prince William Sound: 1 to 3 inches of rain has already fallen as of Thursday afternoon with another 1 to 2 inches possible through Friday. Locally higher amounts are possible in higher terrain. * Mat-Su: 1 to 3 inches of rain have fallen as of Thursday afternoon with another 1 to 2 inches of rain expected through Friday. The highest amounts will be across the northern Susitna Valley and across the higher terrain of the Talkeetnas. The Matanuska Valley will generally receive 1 to 2 inches of total rainfall by the end of the event, with the higher totals occuring towards Sutton and Chickaloon. * Western Kenai Peninsula and Anchorage: Half an inch to 1.5 inches has already fallen across much of this area as of Thursday afternoon, with upwards of 3 inches in Anchor Point. Another half to 1 inch is possible through Friday. Hydrologic Concerns * Sharp rises have already been noted on many area streams and rivers. Many smaller streams will crest Thursday night into Friday while larger rivers or downstream points may crest Friday and Saturday. Higher than normal water levels may continue through Labor Day Weekend into next week. * Many lower locations along rivers such as gravel bars and other spots popular for camping and recreating are likely to become inundated with water. * Heavy rain may result in localized ponding in low-lying areas and locations with poor drainage. Next Steps * Residents along area streams as well as river users and recreationists should anticipate higher than normal water levels and are advised to monitor weather and river forecasts. * Reports on river conditions may be sent to the river forecast center by calling 1-800-847-1739.
INSTRUCTION: N/A
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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
Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
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