Weather Alert in Massachusetts
Flood Warning issued May 10 at 10:00PM EDT until May 12 at 2:00AM EDT by NWS Boston/Norton MA
AREAS AFFECTED: Middlesex, MA; Worcester, MA; Hillsborough, NH
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Massachusetts...Connecticut... Connecticut River At Northampton affecting Hampshire and Hampden Counties. Connecticut River At Thompsonville affecting Hampden and Hartford Counties. ...The Flood Warning continues for the following rivers in Connecticut...Massachusetts...New Hampshire... Connecticut River At Middle Haddam affecting Middlesex County. Connecticut River At Hartford affecting Middlesex and Hartford Counties. Merrimack River At Lowell affecting Middlesex and Essex Counties. Nashua River At East Pepperell affecting Middlesex, Worcester and Hillsborough Counties. For the Connecticut River...including Montague, Northampton, Holyoke Dam, Holyoke, Springfield, Thompsonville, Hartford, Middle Haddam... Minor flooding is forecast. For the Merrimack River...including Lowell, Lawrence, Groveland... Minor flooding is forecast. For the Nashua River...including East Pepperell...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Nashua River at East Pepperell. * WHEN...From late tonight to early Monday morning. * IMPACTS...At 8.0 feet, Minor lowland flooding is likely along the river from East Pepperell downstream through Hollis. * ADDITIONAL DETAILS... - At 9:45 PM EDT Saturday the stage was 7.7 feet. - Bankfull stage is 8.0 feet. - Forecast...The river is expected to rise above flood stage late tonight to a crest of 8.1 feet tomorrow morning. It will then fall below flood stage tomorrow evening. - Flood stage is 8.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: Caution is urged when walking near riverbanks. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued Sunday morning at 1000 AM EDT.
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Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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