Weather Alert in Minnesota
Red Flag Warning issued May 10 at 2:35AM CDT until May 10 at 9:00PM CDT by NWS Grand Forks ND
AREAS AFFECTED: West Polk; Kittson; Roseau; Lake Of The Woods; West Marshall; East Marshall; North Beltrami; Pennington; Red Lake; East Polk; North Clearwater; Towner; Cavalier; Pembina; Benson; Ramsey; Eastern Walsh County; Eddy; Nelson; Grand Forks; Western Walsh County
DESCRIPTION: The National Weather Service in Grand Forks has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM this morning to 9 PM CDT this evening. * AFFECTED AREA...In Minnesota, West Polk, Kittson, Roseau, Lake Of The Woods, West Marshall, East Marshall, North Beltrami, Pennington, Red Lake, East Polk and North Clearwater. In North Dakota, Towner, Cavalier, Pembina, Benson, Ramsey, Eastern Walsh, Eddy, Nelson, Grand Forks and Western Walsh. * WINDS...South 15 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control. Outdoor burning is not recommended. * ADDITIONAL DETAILS...Southerly winds will continue to increase over the weekend, with extremely warm temperatures arriving by Sunday. The hot temperatures, low relative humidity values, and strong southerly winds bring critical fire weather conditions today as well as Sunday afternoon. Focus for worst fire weather conditions is on Sunday as this is the day with the lowest RH, strongest winds and highest temperatures.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
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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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