Weather Alert in Florida
Special Weather Statement issued July 4 at 3:20AM EDT by NWS Jacksonville FL
AREAS AFFECTED: Suwannee; Baker; Inland Nassau; Union; Bradford; Gilchrist; Inland Flagler; Eastern Hamilton; Coastal Nassau; Coastal Duval; Eastern Clay; Eastern Alachua; Eastern Putnam; Eastern Marion; Western Hamilton; Trout River; Western Clay; Western Alachua; Western Putnam; Central Marion; Northern Columbia; South Central Duval; Western Marion; Southeastern Columbia; Western Duval; Northern Inland St. Johns; Southwestern Columbia; Southern Inland St. Johns; Western St. Johns; Wayne; Brantley; Inland Glynn; Coastal Glynn; Inland Camden; Coastal Camden; Northeastern Charlton; Southern Ware; Western Charlton
DESCRIPTION: Areas of fog with localized visibility less than 1 mile will continue to develop through sunrise and impact northeast Florida and portions of southeast Georgia from Waycross to the coast. Visibility may drop suddenly over short distances. Motorists should slow down, allow extra drive time and give space between vehicles where visibility is reduced. The fog will lift after 9 am Friday morning.
INSTRUCTION: N/A
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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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