Weather Alert in Idaho
Red Flag Warning issued July 7 at 1:30PM MDT until July 9 at 9:00PM MDT by NWS Missoula MT
AREAS AFFECTED: Palouse/Nezperce Reservation/Hells Canyon Region
DESCRIPTION: The National Weather Service in Missoula has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 8 PM PDT Wednesday. * AFFECTED AREA...Fire Zone 102 Palouse/Hells Canyon. * TIMING...From 11 AM to 8 PM PDT Wednesday. * WINDS...West 10 to 20 mph with gusts around 30 mph. Stronger outflow gusts possible from thunderstorms. * RELATIVE HUMIDITY...15-20 percent. * IMPACTS...The combination of low humidity with west gusting up to 30 mph along with isolated thunderstorm outflow winds may result in critical fire weather conditions, increasing the risk for new and existing fires to spread quickly.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly.
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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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