Weather Alert in Oregon
Flood Warning issued March 12 at 1:38AM PDT until March 12 at 2:04PM PDT by NWS Portland OR
AREAS AFFECTED: Tillamook, OR
DESCRIPTION: ...The National Weather Service in Portland OR has issued a Flood Warning for the following rivers in Oregon... Wilson River near Tillamook affecting Tillamook County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Wilson River near Tillamook. * WHEN...From early this morning to this afternoon. * IMPACTS...Above 14.0 feet, widespread lowland and dairy land flooding begins along the Wilson River downstream of the river gage at Highway 6 mile post 6. Flooding also begins along sloughs, mainly Dougherty, north of Tillamook from Wilson River Loop Road west to Hwy 101 and along Makinster Road west of Hwy 101. Minor flooding begins in the north Tillamook business district along Hwy 101, particularly during high tide. * ADDITIONAL DETAILS... - At 12:30 AM PDT Thursday the stage was 12.2 feet. - Bankfull stage is 10.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 12:30 AM PDT Thursday was 12.2 feet. - Forecast...The river will rise to 13.9 feet early this morning. It will then fall below flood stage this morning to 8.2 feet late tomorrow morning. It will rise to 10.9 feet late tomorrow evening. It will then fall again and remain below flood stage. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive through flooded areas. Be especially cautious at night when it is harder to recognize the dangers of flooding. Additional information is available at www.weather.gov. The next statement will be issued this afternoon at 145 PM PDT.
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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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