Weather Alert in California
Wind Advisory issued May 4 at 12:48PM PDT until May 5 at 8:00PM PDT by NWS San Diego CA
AREAS AFFECTED: San Bernardino County Mountains; Apple and Lucerne Valleys
DESCRIPTION: * WHAT...Southwest winds 25 to 35 mph with gusts 55 to 65 mph. Isolated gusts to 70 mph on the desert foothills of the mountains tonight. * WHERE...San Bernardino County Mountains and Apple and Lucerne Valleys. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down. Reduced visibility in blowing dust in the deserts. * ADDITIONAL DETAILS...The strongest winds are expected tonight along the desert slopes of the mountains and Sunday afternoon for the Apple and Lucerne Valleys.
INSTRUCTION: Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects.
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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