Weather Alert in Maryland
Heat Advisory issued July 16 at 2:04PM EDT until July 17 at 8:00PM EDT by NWS Wakefield VA
AREAS AFFECTED: Dorchester; Wicomico; Somerset; Inland Worcester; Maryland Beaches; Caroline; Westmoreland; Richmond; Northumberland; Lancaster; Prince George; Charles City; New Kent; Gloucester; Middlesex; Mathews; Surry; James City; Isle of Wight; Norfolk/Portsmouth; Suffolk; Chesapeake; Virginia Beach; Accomack; Northampton; Eastern Hanover; Eastern Chesterfield (Including Col. Heights); Western Henrico (Including the City of Richmond); Eastern Henrico; Western King William; Eastern King William; Western King and Queen; Eastern King and Queen; Western Essex; Eastern Essex; York; Newport News; Hampton/Poquoson
DESCRIPTION: * WHAT...Heat index values up to 107 expected. * WHERE...Portions of southeast Maryland and central, east central, eastern, north central, south central, and southeast Virginia. * WHEN...From 11 AM to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
INSTRUCTION: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
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Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
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
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