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Pastimes : All Things Weather and Mother Nature -- Ignore unavailable to you. Want to Upgrade?


To: Don Green who wrote (130)10/5/2021 2:18:06 PM
From: Don Green  Read Replies (1) | Respond to of 942
 
Rainfall returns to Los Angeles as storms jolt Southern CaliforniaStorms caused a bizarre weather delay Monday night for an NFL game that was played indoors. Forecasters say more storms, as well as cooler air, are in the forecast for the Southwest.

By Ryan Adamson, AccuWeather meteorologist

Oct. 5, 2021



Why California got the storms last night

Bernie Rayno covers the rain and thunderstorms overnight in California and Arizona, which produced impressive lightning strike videos.

Parts of the Southwest endured a stormy start to the week as rare thunderstorms produced dazzling and disruptive lightning displays in Southern California. AccuWeather forecasters say that more wet weather is on way for the drought-plagued region.

The rainfall Monday only amounted to a drop in the bucket for many locations, but it was still notable. Los Angeles International Airport received 0.03 of an inch of rain, the first measurable rain at the airport since Aug. 18 when 0.02 of an inch fell, and only the third time that more than a trace fell since March.

In some locations, the rain was accompanied by thunder and lightning. AccuWeather detected over 43,000 lightning strikes in the southwest U.S. during the 24 hours preceding Tuesday morning.


Thousands of lightning strikes sweep across southern California and western Arizona on the morning of Oct. 5, 2021

"A consequence from this much-needed rain was that the Monday Night Football matchup between the Los Angeles Chargers and the Las Vegas Raiders was delayed by half an hour due to lightning," said AccuWeather Meteorologist Thomas Geiger.

Raiders head coach Jon Gruden expressed frustration about the weather delay following the game. Particularly because SoFi Stadium has a roof overhead.

ā€œI’m not an engineer, I have no idea. I have never heard that. I thought it was a joke, but it affected both teams,ā€ Gruden said, according to Pro Football Talk.



As the cold pocket of air in the upper atmosphere responsible for the rain and thunderstorms begins to move eastward Tuesday, cities such as Salt Lake City and Phoenix will run the risk of a spotty thunderstorm.

In the higher elevations of northern Arizona, some of the rain may be heavy. Locations such as Flagstaff, Sedona and Winslow will run the risk of flash flooding. This will be especially true in any burn scar areas.

The presence of clouds and precipitation will cause temperatures to lower as well. For example, in Flagstaff, a high of 60 degrees F is forecast for Tuesday following a high temperature of 70 degrees Monday. Normally, Flagstaff can expect a high of 67 degrees this time of year.

The Southwest will get a break Thursday, but more precipitation will be on the way after that.

A cold front extending from an area of low pressure moving from the Pacific Northwest into the Rocky Mountains, along with moisture arriving from the ocean, will bring the chance of rain back to Southern California Friday, according to Geiger.



The rain may slow efforts in containing the oil spill off the coast of Southern California. If lightning were to develop in the area, the cleanup efforts may need to be temporarily suspended altogether. Gusty winds in any thunderstorms may further complicate operations.

Although the rain at the end of the week does not look particularly heavy, it is expected to be more widespread than the rain that fell Monday night. In addition, the cooler air behind the front combined with the clouds will result in declining temperatures.

"After a high of 89 degrees on Monday, Las Vegas will only reach 74 degrees by Friday," said AccuWeather Senior Meteorologist Courtney Travis.



As the system moves farther inland into the weekend, the colder air combined with the precipitation may cause snow to fall.

"Some higher elevations in Utah, Wyoming and Colorado may receive a dusting of snow," said Geiger.

Following the system late this week, the next storm may arrive by next Monday or Tuesday. As of now, forecasters say the most likely areas for precipitation will be the Northwest and Rockies, but some rain could make it as far south and west as Southern California once again.