Weather Alert in Arizona
Red Flag Warning issued July 4 at 11:30AM PDT until July 4 at 8:00PM PDT by NWS Las Vegas NV
AREAS AFFECTED: Lake Mead NRA/Colorado River-AZ side; Northwest Deserts/Northwest Plateau; Lincoln County/Ely Dispatch; Nye County Deserts/Las Vegas Dispatch; Sheep Range; Spring Mountains; Clark and SW Lincoln County Deserts/Las Vegas Dispatch; Lake Mead NRA/Colorado River-NV side
DESCRIPTION: ...A RED FLAG WARNING NOW IN EFFECT TODAY THROUGH 8 PM FOR SOUTHERN NEVADA AND NORTHWESTERN ARIZONA FOR STRONG WINDS AND LOW HUMIDITY... * AFFECTED AREA...In Nevada...Fire weather zones 461, 462, 463, 465, and 466. In Arizona...Fire weather zones 101 and 102. * TIMING...Now through 8 PM PDT / MST. * WIND...Southwest winds 15 to 25 mph with gusts to 35 mph. * HUMIDITY...8 to 15 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.
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Weather Topic: What are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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