Weather Alert in Oklahoma
Fire Weather Watch issued February 18 at 12:56AM CST until February 19 at 7:00PM CST by NWS Norman OK
AREAS AFFECTED: Harper; Woods; Alfalfa; Grant; Kay; Ellis; Woodward; Major; Garfield; Noble; Roger Mills; Dewey; Custer; Blaine; Kingfisher; Logan; Beckham; Washita; Caddo; Canadian; Oklahoma; Grady; McClain; Cleveland; Harmon; Greer; Kiowa; Jackson; Tillman; Comanche; Hardeman; Foard; Wilbarger; Knox; Baylor
DESCRIPTION: ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... * WINDS...For today, southwest 15 to 25 mph with gusts up to 40 mph. For Thursday, west to northwest winds 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...For today, as low as 10 to 15 percent. For Thursday, as low as 7 to 12 percent. * TEMPERATURES...Up to 75 degrees today. 60 to 70 degrees on Thursday. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * SEVERITY... FUELS (ERC)...70th-89th percentile...4 (out of 5). WEATHER...Near-Critical to Critical...2 to 3 (out of 5). FIRE ENVIRONMENT...6 to 7 (out of 10).
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 will contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
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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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