Sizzlin’ West, Stormy East

This weekend through early next week, much of the western U.S. will be under searing heat while the East Coast will get a bit stormy.

Credit: WeatherBug - Earth Networks

Credit: WeatherBug – Earth Networks

A sprawling high pressure system will dominate the Southwest, forcing the jet stream, the fast upper-level winds, into Canada. As this occurs, hot and dry air will pump into the West, pushing the mercury to its hottest of the season from southern California to the Rockies.

Credit: andrusdevelopment via Flickr

Credit: andrusdevelopment via Flickr

  • Excessive Heat Warnings are in effect through the weekend for the Desert Southwest, southern Great Basin and inland desert locations of southern California. This includes Las Vegas, Phoenix and the inland locations of the greater Los Angeles area including Pasadena, Burbank, Universal City and Thousand Oaks. 
  • Excessive Heat Watches are in effect Saturday through Monday in the Sacramento and San Joaquin valleys. Sacramento, Modesto, Fresno and Bakersfield, Calif., as well as the Yosemite Valley are included.
  • Heat Advisories include the central California coast and parts of the San Francisco Bay area.


On the flip-side, a low pressure system in the upper atmosphere will create a dip in the jet stream, allowing cooler air to collide with the summer heat and humidity common to the East. This will cause scattered showers and storms to break out each day, making outdoor plans a bit difficult. Due to the high moisture content in the atmosphere along the Interstate 95 corridor, the major East Coast cities will see heavy enough rain to cause flash flooding.

 Video showing the power and speed of flash floods:

  • Flash Flood Watches stretch from New York to central Maine, including New York City, Albany and Buffalo, N.Y., Boston, Hartford, Conn., and Providence, R.I.

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For tips on how to stay safe from the heat, read Beat the Heat Before it Beats You!

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This entry was posted in General, Weather Stats.