Weather Alert in New Hampshire
Blizzard Warning issued February 22 at 1:37AM EST until February 23 at 10:00PM EST by NWS Gray ME
AREAS AFFECTED: Coastal Rockingham
DESCRIPTION: * WHAT...Blizzard conditions expected. Total snow accumulations between 10 and 14 inches. Winds gusting as high as 50 mph. * WHERE...Coastal Rockingham County. * WHEN...From 7 PM this evening to 10 PM EST Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. The potential exists for snowbands that will bring periods of locally heavy snowfall, which will lead to rapid snow accumulations and extremely dangerous travel conditions. Heavy wet snow will cause weighted tree limbs, leading to snapped branches, downed trees, and an elevated power outage threat. Significant snowfall and periods of heavy snowfall rates will combine with low visibility to create very dangerous driving conditions. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds will blow around unsecured objects and break some tree limbs. The power outage threat is elevated.
INSTRUCTION: Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions can be obtained by going to newengland511.org Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary.
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Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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