Weather Alert in Michigan
Severe Thunderstorm Warning issued July 15 at 9:29PM CDT until July 15 at 10:30PM CDT by NWS Marquette MI
AREAS AFFECTED: Iron, MI
DESCRIPTION: SVRMQT The National Weather Service in Marquette has issued a * Severe Thunderstorm Warning for... Iron County in south central Upper Michigan... * Until 1030 PM CDT. * At 928 PM CDT, severe thunderstorms were located along a line extending from 7 miles southwest of Kenton to near Phelps, moving east at 40 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Iron River, Crystal Falls, Stambaugh, Amasa, U.S. 141 between Covington and Amasa, Caspian, Gaastra, Alpha, Way Dam, Stager, Hagerman Lake, and Golden 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. Persons in campgrounds should seek sturdy shelter until these storms pass.
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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