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 are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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