Weather Alert in Pennsylvania
Blizzard Warning issued February 22 at 2:56AM EST until February 23 at 6:00PM EST by NWS Mount Holly NJ
AREAS AFFECTED: Delaware; Philadelphia; Eastern Montgomery; Upper Bucks; Lower Bucks
DESCRIPTION: ...POTENTIALLY HISTORIC WINTER STORM WILL IMPACT THE REGION THROUGH MONDAY... .A major winter storm is expected to develop today, impacting the region with very heavy, crippling snowfall and areas of blizzard conditions. Precipitation will develop today, changing to all snow this afternoon and evening. The most severe conditions and heaviest snowfall will occur tonight, with snow gradually tapering off during the daytime Monday. Record breaking snowfall totals are possible. * WHAT...Blizzard conditions expected. Total snow accumulations between 16 and 22 inches. Winds gusting as high as 45 mph. * WHERE...Delaware, Eastern Montgomery, Lower Bucks, Philadelphia, and Upper Bucks Counties. * WHEN...From 10 AM this morning to 6 PM EST Monday. * IMPACTS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The hazardous conditions will impact the Monday morning and evening commutes. Gusty winds could bring down tree branches and result in isolated power outages. * ADDITIONAL DETAILS...Snowfall rates could exceed 2 inches per hour. Locally higher snowfall amounts and significant drifting of snow possible.
INSTRUCTION: Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
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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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