Weather Alert in Oregon
Winter Storm Warning issued February 15 at 11:20AM PST until February 19 at 10:00AM PST by NWS Medford OR
AREAS AFFECTED: Eastern Curry County and Josephine County
DESCRIPTION: ...LOW SNOW LEVELS WITH MULTIPLE ROUNDS OF PRECIPITATION... .A sharp cold front will push through the region Monday night into Tuesday morning with a cold air mass to follow through at least Thursday. Snow levels will quickly lower from around 3000 ft during the day Monday to around 1000-1500 ft late Monday night into the early hours of Tuesday. Multiple waves of precipitation will move through the region while this cold air mass is in place, bringing multiple opportunities for low elevation snow. This will be a long duration event, and after the initial front Monday night, precipitation will become more showery, resulting in periods of spotty and quick accumulations. The values reflected below indicate totals over a 72 hour period from 10pm Monday through 10pm Thursday. Daytime heating will result in snow levels rising to around 2000-2500 ft during the daylight hours, then lower back down during the overnight periods. The best chances for accumulating snow down to valley floors will be during the overnight and early morning hours. * WHAT...For the Winter Weather Advisory below 1500 ft, wet snow expected. Total snow accumulations 2 to 4 inches. For the Winter Storm Warning above 1500 ft, heavy snow expected. Total snow accumulations 4 to 8 inches for the passes north of I-5, and 6 to 12 inches for the southern portions of the Illinois Valley. Up to 2 ft in the Kalmiopsis region. * WHERE...For the Winter Weather Advisory below 1500 ft, this includes the communities of Grants Pass, Wilderville, Merlin, Galice and Agness as well as portins of I-5 and Highway 199. For the Winter Storm Warning above 1500 ft, this includes the communities of Cave Junction, Obrien, Selma and Wolf Creek. This also includes portions of I-5 and Highway 199 and the Sexton Pass, Smith Hill and Stage Pass on I-5, Hayes Hill on Highway 199 and Bear Camp road in the Kalmiopsis Wilderness. * WHEN...From 10 PM Monday to 10 AM PST Thursday. * IMPACTS...Travel may be very difficult to impossible. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...The heaviest snow is expected Monday night into early Tuesday morning. Visit weather.gov/mfr/winter for snow probabilities.
INSTRUCTION: Slow down and use caution while traveling. Call 511 or visit tripcheck.com for road information. If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 511 or visit tripcheck.com for road information.
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Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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