Weather Alerts for Alaska
1. Coastal Flood Advisory for: Kuskokwim Delta Coast and Nunivak Island
2. Flood Watch for: Kuskokwim Valley West; Kuskokwim Valley East; Interior Kuskokwim Delta; Northern Bristol Bay Coast; Inland Bristol Bay
3. Flood Watch for: South Slopes Of The Central Brooks Range; South Slopes of the Western Brooks Range; Upper Kobuk Valleys
4. Heat Advisory for: City of Hyder
5. Hydrologic Outlook for: Howard Pass and the Delong Mountains; Central Brooks Range; Noatak Valley; Lower Kobuk Valley; Northern Seward Peninsula; Southern Seward Peninsula Coast; Interior Seward Peninsula; Eastern Norton Sound and Nulato Hills; Lower Yukon River; Lower Koyukuk Valley; Middle Yukon Valley; Lower Yukon and Innoko Valleys; Upper Koyukuk Valley; Dalton Highway Summits; Central Interior
6. Hydrologic Outlook for: Howard Pass and the Delong Mountains; Central Brooks Range; South Slopes Of The Central Brooks Range; South Slopes of the Western Brooks Range; Noatak Valley; Lower Kobuk Valley; Northern Seward Peninsula; Upper Kobuk Valleys; Southern Seward Peninsula Coast; Interior Seward Peninsula; Eastern Norton Sound and Nulato Hills; Lower Yukon River; Lower Koyukuk Valley; Middle Yukon Valley; Lower Yukon and Innoko Valleys; Upper Koyukuk Valley; Dalton Highway Summits; Central Interior
7. Hydrologic Outlook for: Kuskokwim Valley West; Kuskokwim Valley East; Interior Kuskokwim Delta; Western Capes; Northern Bristol Bay Coast; Inland Bristol Bay
8. Hydrologic Outlook for: White Mountains and High Terrain South of the Yukon River; Upper Chena River Valley; Chatanika River Valley; Two Rivers
9. Wind Advisory for: Delta Junction
10. Wind Advisory for: Eastern Alaska Range North of Trims Camp
11. Wind Advisory for: Lower Koyukuk Valley; Middle Yukon Valley; Lower Yukon and Innoko Valleys; Upper Kuskokwim Valley
12. Wind Advisory for: Northern Denali Borough
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North America Water Vapor (Moisture)
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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