Weather Alert in Alaska
Winter Storm Warning issued March 1 at 6:52AM AKST until March 2 at 9:00AM AKST by NWS Juneau AK
AREAS AFFECTED: Petersburg Borough
DESCRIPTION: ...ANOTHER ROUND OF SNOWFALL EXPECTED SUNDAY FOR CENTRAL PANHANDLE... The active weather pattern continues through Sunday as remnants of yesterday's storm continues to dissipate. Split flow will develop as an incoming front stalls across the central panhandle, with cold strong northerly outflow winds developing across the northern inner channels and warmer southerly winds across the southern panhandle. This sets the stage for portions of the central and southern panhandle to see moderate to heavy snowfall by Sunday afternoon through Sunday evening as another surge of moisture pushes into the area. A transition to a rain snow mix is expected through Monday morning with a transition to rain by Monday afternoon as temperatures increase. Main forecast challenge is potential for temperatures to warm up quicker than expected through Sunday night and into Monday morning with the front moving further north, limiting snowfall accumulations. * WHAT...Heavy snow expected. Total snow accumulations of 8 to 12 inches. * WHERE...Petersburg Borough. * WHEN...Until 9 AM AKST Monday. * IMPACTS...Travel will be very difficult. * ADDITIONAL DETAILS...An approaching system from the south will bring heavier snowfall through Sunday and persist into Monday morning. Snow will gradually transition to a rain snow mix through Monday morning, eventually all rain by Monday afternoon.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water with you in case of an emergency. People are urged to prepare their property before the onset of winter weather. For the latest road conditions, where available, call 5 1 1 or visit 511.alaska.gov.
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Weather Topic: What is Condensation?
Home - Education - Precipitation - Condensation
Next Topic: Contrails
Condensation is the process which creates clouds, and therefore
it is a crucial process in the water cycle.
Condensation is the change of matter from a state of gas into a state of liquid,
and it happens because water molecules release heat into the atmosphere and
become organized into a more closely packed structure, what we might see as
water droplets.
Water is always present in the air around us as a vapor, but it's too small for
us to see. When water undergoes the process of condensation it becomes organized
into visible water droplets. You've probably seen condensation happen before on the
surface of a cold drink!
Next Topic: Contrails
Weather Topic: What are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
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