Weather Alert in Massachusetts
High Surf Advisory issued August 21 at 1:03PM EDT until August 23 at 8:00PM EDT by NWS Boston/Norton MA
AREAS AFFECTED: Southern Bristol; Washington; Newport
DESCRIPTION: * WHAT...Large breaking waves of 10 to 15 feet. Flooding of up to one foot deep on vulnerable coastal roads and some debris on roadways around high tide Friday morning and Friday evening. * WHERE...Massachusetts and Rhode Island South Coast. * WHEN...For the High Surf Advisory, until 8 PM EDT Saturday. For the Coastal Flood Advisory, for high tides Friday morning and Friday evening. * IMPACTS...Flooding up to one foot deep occurs along the most vulnerable shoreline locales in Newport, Portsmouth and Middletown. This includes flooding at parking lots near beaches in Newport, and a portion of Hazard Road. Shallow flooding also occurs on several streets in the Common Fence Point area. Dangerous swimming and surfing conditions and significant beach erosion.
INSTRUCTION: Do not drive around barricades or through water of unknown depth during high tide. Take the necessary actions to protect flood- prone property. Many ocean beaches are closed. Stay out out of the water due to dangerous surf conditions. Only view surf at a safe distance, not from jetties or piers.
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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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