Weather Alert in California
Winter Storm Warning issued February 17 at 9:17PM PST until February 19 at 10:00PM PST by NWS San Diego CA
AREAS AFFECTED: San Bernardino County Mountains
DESCRIPTION: * WHAT...Heavy snow expected. Additional snowfall through Wednesday of 3 to 8 inches from 5000 to 6000 feet, 8 to 16 inches from 6000 to 7000 feet, locally exceeding 20 inches above 7500 feet. Snow levels around 5000-5500 feet will fall to 3500 to 4500 feet Wednesday morning. Southwest winds of 25 to 35 mph will gust to 65 mph with isolated gusts to 75 mph on the desert mountain slopes are expected. An additional 3 to 8 inches of snow Thursday. * WHERE...San Bernardino County Mountains. * WHEN...Until 10 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible due to snow covered roads and near zero visibility at times. The hazardous conditions could impact the Wednesday morning and evening commutes. Very strong winds could cause extensive tree damage. * ADDITIONAL DETAILS...Potentially damaging winds expected tonight into Wednesday, strongest on the desert slopes. For early Wednesday morning and again Thursday, there is a chance of light accumulating snow on I-15 at the summit of the Cajon Pass.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
Want more detail? Get the Complete 7 Day and Night Detailed Forecast!
Current U.S. National Radar--Current
The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).
National Weather Forecast--Current
The Current National Weather Forecast and National Weather Map are shown below.
National Weather Forecast for Tomorrow
Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.
North America Water Vapor (Moisture)
This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
Current conditions powered by WeatherAPI.com
