Tropical Moisture From The South To Up Shower or Thunderstorm Chances Los Angeles Eastward On Tuesday; June 22, 2021; Details


Southern California Weather Force has issued a Special Weather Statement effective Tuesday as the outflow from a disturbance over Central Baja, Mexico will reach Southern California overnight on Monday, morning early Tuesday morning, and going through the day, upping the chance of showers or thunderstorms for Los Angeles eastward, westward is out so read on for details …

We are having yet another break from tropical moisture in what were ‘surprise’ events within the last week, but another one looks to be brewing.  A disturbance currently in Mexico will cross Central Baja, Mexico tonight into Monday.  Powerful thunderstorms will develop within it and the outflow from them will be sent northward towards Southern California and Arizona.  The last event came from Arizona, but this one will come from Baja, Mexico, which means that San Diego and Imperial County will be within the chance of showers or thunderstorms.

There is an upper-level low west of California that will keep a dry southwest flow west of Los Angeles, so if you are in Ventura, Kern, Santa Barbara, or San Luis Obispo County you are not in this forecast.  There will be a fine line from dry air to moist air … the dividing line is Los Angeles County.  So Los Angeles is the border of no activity vs activity, with most of it happening east into Orange, Inland Empire, San Diego, Imperial, Coachella Valley, San Bernardino Mountains, High Desert/Morongo Valley, CO River, and Las Vegas, just as the embedded article graphic says.

Depending on mid-level moisture, this could harbor a better chance of rainfall, not flooding type, however.  It also does give the risk of fires due to lightning strikes under little rainfall in some of the cells.  This will move off by Thursday – so this is a one to two-day event.  Stay tuned to Southern California Weather Force on social media, your member e-mail alert service system, or however you follow for further updates.


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