Weather Alert in New Jersey
Extreme Cold Warning issued February 6 at 1:34AM EST until February 8 at 10:00AM EST by NWS Mount Holly NJ
AREAS AFFECTED: Sussex; Warren; Morris; Berks; Lehigh; Northampton
DESCRIPTION: * WHAT...For the Wind Advisory, northwest winds 15 to 25 mph with gusts up to 50 mph expected. For the Extreme Cold Warning, dangerously cold wind chills as low as 21 below expected. * WHERE...In New Jersey, Morris, Sussex, and Warren Counties. In Pennsylvania, Berks, Lehigh, and Northampton Counties. * WHEN...For the Wind Advisory, from 8 AM to 9 PM EST Saturday. For the Extreme Cold Warning, from 3 PM Saturday to 10 AM EST Sunday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. The dangerously cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes.
INSTRUCTION: Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Dress in layers including a hat, face mask, and gloves if you must go outside.
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Weather Topic: What are Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds
Weather Topic: What are Cumulus Clouds?
Home - Education - Cloud Types - Cumulus Clouds
Next Topic: Drizzle
Cumulus clouds are fluffy and textured with rounded tops, and
may have flat bottoms. The border of a cumulus cloud
is clearly defined, and can have the appearance of cotton or cauliflower.
Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall,
becoming cumulus congestus and possibly the even taller cumulonimbus clouds.
When cumulus clouds become taller, they have a greater chance of producing precipitation.
Next Topic: Drizzle
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