Weather Alert in Maine
Severe Thunderstorm Warning issued July 17 at 4:31PM EDT until July 17 at 5:15PM EDT by NWS Caribou ME
AREAS AFFECTED: Aroostook, ME; Piscataquis, ME
DESCRIPTION: SVRCAR The National Weather Service in Caribou Maine has issued a * Severe Thunderstorm Warning for... Northeastern Piscataquis County in north central Maine... Northeastern Aroostook County in northern Maine... * Until 515 PM EDT. * At 430 PM EDT, severe thunderstorms were located along a line extending from near Eagle Lake to Big Machias Lake to 10 miles east of Churchill Dam, moving east at 30 mph. The line is approaching the route 11 corridor from Eagle Lake to Portage to Masardis. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. * Locations impacted include... Eagle Lake, Portage, Mapleton, Washburn, Ashland, Woodland, Portage Lake, New Canada, Masardis, Oxbow, Russel Crossing, Big Machias Lake, Madawaska Lake, Fish River Lake, Nashville Plantation, Cross Lake, New Sweden, Castle Hill, Perham, and Wade. This includes State Highway 11 between Ashland and Eagle Lake.
INSTRUCTION: Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building.
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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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