Why is it so sizzling in Los Angeles proper now? – NBC Los Angeles
This week’s Excessive Warmth Warning throughout Southern California has shattered data — however why is it so sizzling in March? Nicely, there’s a motive it feels extra like summer time.
In accordance with NBC Los Angeles meteorologist Belen De Leon, a high-pressure system paired with a number of different elements are the culprits.
A ‘very tall’ high-pressure system
“Throughout March, normally we see high-pressure programs, however they’re weaker they usually don’t final very lengthy,” De Leon defined. “However proper now, now we have a large, record-strong, high-pressure system over the Southwest, and it’s not simply affecting us right here in Southern California.”
De Leon mentioned the present high-pressure system is extending very excessive into the ambiance, “extra like one thing you’d see in the midst of the summer time.”
“[The high-pressure system] may be very tall. So, the taller and the stronger that prime stress system is, the extra air it pushes down,” she mentioned. “And, when air sinks, it warms and it compresses. When that air compresses, it heats up. Plus, we’ve bought clear skies, wall-to-wall sunshine — that’s what causes the temperatures to climb so shortly in the course of the day.”
De Leon mentioned the most important problem with this method is that it’s not budging.
“It’s not shifting; there’s nothing to push it out of the way in which,” she defined. “That’s why now we have this prolonged warmth wave. The warmth is constructing, data are falling, and even our nights are unusually heat.”
SoCal warmth data, smashed
NBCLA meteorologist David Biggar mentioned many Southern California warmth data have been damaged on Wednesday — and extra warmth data, together with all-time March data, are doubtless Thursday and Friday.
“Palm Springs might strategy the document for the ‘Hottest March Day’ within the US,” he added.
Listed here are a few of Wednesday’s record-breaking stats:
- 82 levels at LAX: Broke the 79-degree document from 1988
- 87 levels at UCLA: Broke the 84-degree document from 1978
- 87 levels in Idyllwild: Broke the 75-degree document from 2004
- 91 levels in Lengthy Seashore: Broke the 86-degree document from 1960
- 92 levels in Palmdale: Broke the 84-degree document from 1997
- 93 levels in Lancaster: Broke the 85-degree document from 2004
- 95 levels in Anaheim: Broke the 88-degree document from 2010
- 95 levels in Santa Ana: Broke the 88-degree document from 1978
- 95 levels in Downtown Los Angeles: Broke the 87-degree document from 1997
- 97 levels in Burbank: Broke the 89-degree document from 1978
- 98 levels in Riverside: Broke the 93-degree document from 1914
- 100 levels in Woodland Hills: Broke the 92-degree document from 1997
Biggar mentioned the record-temp in Idyllwild additionally broke that group’s document for the all-time hottest day in March.
As Southern Californians battle the extreme warmth, the rise in temperatures is placing a stress on energy grids. Macy Jenkins stories for the NBC4 Information at 11 p.m. on Wednesday, March 18, 2026.
Thursday and Friday: ‘The highest of the curler coaster’
De Leon mentioned Thursday’s temps will even attain document highs. Listed here are some temps from NBCLA’s First Alert Forecast:
- 97 levels in Los Angeles
- 99 levels in Van Nuys
- 100 levels in West Covina
- 101 levels in San Bernardino
- 102 levels in Riverside
- 102 levels in Lake Elsinore
The excessive temps will stick round via Friday; the Excessive Warmth Warning expires at 8 p.m. Friday.
“At the moment and tomorrow, we’re on the high of the curler coaster,” De Leon mentioned. “After which, some aid this weekend.”
The prolonged warmth wave brings a better threat for warmth sickness. Lauren Coronado stories for the NBC4 Information at 6 a.m. on March 17, 2026.
What’s subsequent?
In accordance with De Leon, the high-pressure system will shift considerably east this weekend. That can carry barely cooler temperatures to the area, however not by a lot.
“In order that’s going to maintain our temperatures working method above the place they need to be for this time of yr,” she mentioned. “Subsequent week, it stays sizzling and it’s nonetheless going to really feel like summer time.”
The high-pressure system will linger via subsequent week.
De Leon mentioned subsequent week’s temps can be within the upper-80s and low-90s — however at the very least there gained’t be triple-digits.
