Weather Alert in Alaska
Hydrologic Outlook issued August 29 at 12:50PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Northern Bristol Bay Coast
DESCRIPTION: ESFAFC Prolonged moderate to heavy rain from Togiak to Dillingham is expected Saturday afternoon through Monday morning. Lighter rain showers will begin as early as Saturday morning and will continue into Monday evening. Expect water levels along small streams and rivers to rise, especially in steeper terrain. Expected Rainfall: Saturday Morning through Monday afternoon * Togiak/Twin Hills: 3.5 inches. * Dillingham: 2.2 inches. * Manokotak: 2.7 inches. * Clarks Point: 2.1 inches. Hydrologic Concerns: * Higher than normal river and stream levels have already been noted. Higher than normal water levels may continue into Tuesday. * Many lower locations along rivers such as gravel bars 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 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.
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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
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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