Weather Alert in Maryland
Special Weather Statement issued February 7 at 12:53AM EST by NWS Baltimore MD/Washington DC
AREAS AFFECTED: Washington; Frederick; Central and Eastern Allegany; Frederick; Clarke; Western Loudoun; Hampshire; Morgan; Berkeley; Jefferson; Eastern Mineral
DESCRIPTION: At 1248 AM EST, snow showers were located along a line extending from near Berkeley Springs to Romney. Movement was southeast at 35 mph. Winds in excess of 30 mph are possible with these snow showers along with a quick coating to locally half inch or snow. Locations impacted include... Frederick, Hagerstown, Winchester, Martinsburg, Thurmont, Charles Town, Emmitsburg, Romney, Shepherdstown, Hancock, Paw Paw, Municipal Stadium, Harry Grove Stadium, Millwood Pike, Ballenger Creek, Robinwood, Brunswick, Walkersville, Fountainhead-Orchard Hills, and Ranson. This includes the following highways... Interstate 68 in Maryland between mile markers 72 and 80. Interstate 70 in Maryland between mile markers 1 and 56. Interstate 81 in Maryland between mile markers 1 and 12. Interstate 270 in Maryland between mile markers 29 and 32. Use extra caution if you must travel into or through these snow showers. Rapid changes in visibility and potentially slick roads are likely to lead to accidents. Consider delaying travel until the snow showers pass your location. Conditions can deteriorate rapidly in winter weather situations. Be prepared for snow or ice covered roads. Slow down and allow extra time when traveling.
INSTRUCTION: N/A
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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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