A prolonged and record heat wave builds over the West this week

[Spartan]

Some of the hottest temperatures of the year are on the way for the West Coast and possibly staying dangerously hot through Labor Day as a mega heat wave builds in for the long term.

More than 55 million people are currently under heat alerts from Southern California through the San Joaquin Valley and into portions of the Northwest, including 20 of the most populated cities up and down the West Coast.

"Temperatures could exceed 110F in parts of the Southwest, where an excessive heat warning is currently in effect," the Weather Prediction Center wrote.

The most dire areas will be in the Southwest, where the heat will be the most intense.

 

"Some records may be broken but record max temps are very high at this time of the year," said the NWS office in Los Angeles. "Record breaking or not, this prolonged heat wave is going to be very dangerous."

More than 100 records could fall in the West.

Sign up for weekly forecasts from CNN meteorologists

Prolonged heat wave for the Southwest 

Thanks to our partners at @ReadyLACounty for getting the Heat Risk graphics out.

To find out more about Heat Risk, check out the website:https://t.co/5YfBnhG3CY

This will be a prolonged heat event for the entire area. Be prepared. #CAwx #LAHeat https://t.co/kOKwD7u5gU

— NWS Los Angeles (@NWSLosAngeles) August 30, 2022

The kind of heat that will be felt from San Diego to Los Angeles to even Phoenix will be difficult to endure even for the locals.

"This heat may be record breaking and will produce a very high risk of heat illness," said the NWS office in Los Angeles. "Triple digit heat is expected for many valley and mountain locations. Even hotter conditions are expected over the Labor Day weekend into early next week."

The heat will begin Tuesday, with a gradual warm-up each day through the week, and it will peak by the end of the week.

The reason for the extreme conditions is a stubborn area of high pressure sitting over the region, creating what meteorologists call a "heat dome."

This intense heat dome causes high pressure to act as a lid on the atmosphere. As hot air attempts to escape, the lid forces it back down, warming even more as it sinks.

The result will be intense summer heat, running 10-15 degrees above normal.

 

"Excessive Heat warnings are in effect for almost the entire forecast area starting Wednesday and continuing all the way through next Monday," noted the NWS office in Los Angeles.

The forecast shows temperatures of 110-115 degrees in the deserts and San Fernando Valley, with temperatures running 90-100 along the coast. That's hot enough to potentially break records there as well.

 

In Phoenix, the "dry heat" will give way to more humid conditions by Thursday and Friday.

 

This will cause the actual temperature to fall slightly, but the NWS in Phoenix warns that the humidity could actually make it feel hotter.

 

In Southern California, a few morning clouds Friday morning could edge in, giving a brief reprieve from the heat -- but it will be short-lived.

"There will be renewed warming leading to a kiln-like day on Sunday," said the NWS office in Los Angeles.

 

Even downtown Los Angeles could hit 100 degrees on Sunday with Death Valley potentially hitting 125.

 

This heat extends all the way into the San Joaquin Valley, where record-breaking temperatures are possible.

Temperatures are going to be very hot this Labor Day weekend with near record temperatures on Sunday and Monday. Here are the temperature forecasts as of 4:45 PM. #CAWx #Fresno #Bakersfield #LaborDayWeekend pic.twitter.com/og0ToDCKcg

— NWS Hanford (@NWSHanford) August 29, 2022

"Confidence is increasing in this being the hottest temperatures so far this year," said the NWS office in Hanford, California.

 

"Record high temperatures are possible beginning Thursday with the best chances for record highs on Sunday and Monday when the peak of the heat is expected."

 

The Labor Day holiday will be one of the hottest days of the event, with the heat potentially lasting through much of next week -- making heat-related illness a huge concern amidst the oppressive heat.

Record heat for the Pacific Northwest

Maximum heat for interior portions of the Pacific Northwest will be felt through much of this week, as high temperatures soar, including in Seattle, Portland and Boise.

"Daytime highs between 10-20F above normal and nighttime lows between 15-20F above normal are likely," said the Weather Prediction Center.

The heat is expected to peak on Wednesday with highs in the 90s and potentially hitting the triple digits for portions of the Western Basin, near Spokane, Washington -- even breaking records.

 

"Highs are slated to top out upwards of 10-15 degrees above average as several locations could test daily records for max temperatures," said the National Weather Service in Seattle.

#Hoquiam tied record high today with 84°, which was last set in 2007. Record highs are possible on Tuesday.

Record highs for 8/30
Sea-Tac Airport: 88° in 1987
Olympia: 93° in 1944
Bellingham: 85° in 1987
Quillayute: 89° in 1987
Hoquiam: 83° in 1993,1968#wawx pic.twitter.com/xGBvKUGynv

— NWS Seattle (@NWSSeattle) August 30, 2022

Near Boise, Idaho, temperatures could reach 20 degrees above normal, with record heat expected through Tuesday.

 

And in Seattle, high temperatures are expected to top out in the upper 80s to low 90s.

 

The extreme heat should break by the end of the week, resulting in temperatures back in the 70s for Labor Day weekend.

 

@csrcsr @Vaampire

[Spartan]

@BeerBob123 @ARYA

[Spartan]

Bay Area lo 110 kotte chance undanta... Saturday or Sunday.

[ARYA]

1 hour ago, Spartan said:

@BeerBob123 @ARYA

Escaping to big sur vuncle

[Picheshwar]

2 hours ago, Spartan said:

@BeerBob123 @ARYA

K

[Spartan]

51 minutes ago, ARYA said:

Escaping to big sur vuncle

akkada kuda ante undi 

heat wave mottam west coast all the way to Phoenix

[ARYA]

1 minute ago, Spartan said:

akkada kuda ante undi 

heat wave mottam west coast all the way to Phoenix

beach deggara vanikistundi uncle..

manaki elago sunset ite high 50s e kada everyday..

 

[BeerBob123]

2 hours ago, ARYA said:

Escaping to big sur vuncle

Congratulations uncle

[BeerBob123]

4 hours ago, Spartan said:

@BeerBob123 @ARYA

Fried piece Biryani long weekend

[futurekadost]

4 hours ago, Spartan said:

Some of the hottest temperatures of the year are on the way for the West Coast and possibly staying dangerously hot through Labor Day as a mega heat wave builds in for the long term.

More than 55 million people are currently under heat alerts from Southern California through the San Joaquin Valley and into portions of the Northwest, including 20 of the most populated cities up and down the West Coast.

"Temperatures could exceed 110F in parts of the Southwest, where an excessive heat warning is currently in effect," the Weather Prediction Center wrote.

The most dire areas will be in the Southwest, where the heat will be the most intense.

 

"Some records may be broken but record max temps are very high at this time of the year," said the NWS office in Los Angeles. "Record breaking or not, this prolonged heat wave is going to be very dangerous."

More than 100 records could fall in the West.

Sign up for weekly forecasts from CNN meteorologists

Prolonged heat wave for the Southwest 

Thanks to our partners at @ReadyLACounty for getting the Heat Risk graphics out.

To find out more about Heat Risk, check out the website:https://t.co/5YfBnhG3CY

This will be a prolonged heat event for the entire area. Be prepared. #CAwx #LAHeat https://t.co/kOKwD7u5gU

— NWS Los Angeles (@NWSLosAngeles) August 30, 2022

The kind of heat that will be felt from San Diego to Los Angeles to even Phoenix will be difficult to endure even for the locals.

"This heat may be record breaking and will produce a very high risk of heat illness," said the NWS office in Los Angeles. "Triple digit heat is expected for many valley and mountain locations. Even hotter conditions are expected over the Labor Day weekend into early next week."

The heat will begin Tuesday, with a gradual warm-up each day through the week, and it will peak by the end of the week.

The reason for the extreme conditions is a stubborn area of high pressure sitting over the region, creating what meteorologists call a "heat dome."

This intense heat dome causes high pressure to act as a lid on the atmosphere. As hot air attempts to escape, the lid forces it back down, warming even more as it sinks.

The result will be intense summer heat, running 10-15 degrees above normal.

 

"Excessive Heat warnings are in effect for almost the entire forecast area starting Wednesday and continuing all the way through next Monday," noted the NWS office in Los Angeles.

The forecast shows temperatures of 110-115 degrees in the deserts and San Fernando Valley, with temperatures running 90-100 along the coast. That's hot enough to potentially break records there as well.

 

In Phoenix, the "dry heat" will give way to more humid conditions by Thursday and Friday.

 

This will cause the actual temperature to fall slightly, but the NWS in Phoenix warns that the humidity could actually make it feel hotter.

 

In Southern California, a few morning clouds Friday morning could edge in, giving a brief reprieve from the heat -- but it will be short-lived.

"There will be renewed warming leading to a kiln-like day on Sunday," said the NWS office in Los Angeles.

 

Even downtown Los Angeles could hit 100 degrees on Sunday with Death Valley potentially hitting 125.

 

This heat extends all the way into the San Joaquin Valley, where record-breaking temperatures are possible.

Temperatures are going to be very hot this Labor Day weekend with near record temperatures on Sunday and Monday. Here are the temperature forecasts as of 4:45 PM. #CAWx #Fresno #Bakersfield #LaborDayWeekend pic.twitter.com/og0ToDCKcg

— NWS Hanford (@NWSHanford) August 29, 2022

"Confidence is increasing in this being the hottest temperatures so far this year," said the NWS office in Hanford, California.

 

"Record high temperatures are possible beginning Thursday with the best chances for record highs on Sunday and Monday when the peak of the heat is expected."

 

The Labor Day holiday will be one of the hottest days of the event, with the heat potentially lasting through much of next week -- making heat-related illness a huge concern amidst the oppressive heat.

Record heat for the Pacific Northwest

Maximum heat for interior portions of the Pacific Northwest will be felt through much of this week, as high temperatures soar, including in Seattle, Portland and Boise.

"Daytime highs between 10-20F above normal and nighttime lows between 15-20F above normal are likely," said the Weather Prediction Center.

The heat is expected to peak on Wednesday with highs in the 90s and potentially hitting the triple digits for portions of the Western Basin, near Spokane, Washington -- even breaking records.

 

"Highs are slated to top out upwards of 10-15 degrees above average as several locations could test daily records for max temperatures," said the National Weather Service in Seattle.

#Hoquiam tied record high today with 84°, which was last set in 2007. Record highs are possible on Tuesday.

Record highs for 8/30
Sea-Tac Airport: 88° in 1987
Olympia: 93° in 1944
Bellingham: 85° in 1987
Quillayute: 89° in 1987
Hoquiam: 83° in 1993,1968#wawx pic.twitter.com/xGBvKUGynv

— NWS Seattle (@NWSSeattle) August 30, 2022

Near Boise, Idaho, temperatures could reach 20 degrees above normal, with record heat expected through Tuesday.

 

And in Seattle, high temperatures are expected to top out in the upper 80s to low 90s.

 

The extreme heat should break by the end of the week, resulting in temperatures back in the 70s for Labor Day weekend.

 

@csrcsr @Vaampire