Chad Thackeray

Climate scientist @UCLA. @UWaterloo/@Laurier Alum. Raptors, Eagles, LFC fan

[Chad Thackeray @ChadThackeray]

In a new report, we (@peedublya @ProfAlexHall @GavinDayanga) explore the weather and climate factors that allowed the Los Angeles fires to become so large and destructive.
@UCLA @UCLAIoES @UCLASustainLA
Full report: https://t.co/pRklMHTd0b
Summary: https://t.co/FBL1zGpvwY

[Dr. Robert Rohde @RARohde]

900 instruments in multiple arrays providing continuous monitoring of shallow to deep ocean conditions, set to be pulled off their moorings and dismantled by the Trump administration.

[Met Office @metoffice]

Today is now the hottest day in May on record with Heathrow and Kew Gardens provisionally reaching 35.0°C

Until yesterday the highest temperature in May was 32.8°C, but we've now exceeded that record on consecutive days by a full two degrees Celsius 🌡️

[NWS Los Angeles @NWSLosAngeles]

#SandyFire rapidly growing near Simi Valley. Obey any advice and orders from local officials.

Current Evacuations:
https://t.co/u3KQ4nK0Be

Current Weather Conditions:
https://t.co/clQqZ3SyEO

Current Weather Forecast:
https://t.co/F29ef359Td

[NWS Los Angeles @NWSLosAngeles]

Windy with elevated to brief critical #FireWx conditions this weekend:

* W-NW winds gusting 35-50 MPH interior sections and western Santa Ynez Mountains
* Min RH 8-15% interior sections except 20-30% SW #SantaBarbara county
* High risk of fast-moving grass/shrub fires.

#CAwx

[Ben Noll @BenNollWeather]

Strongest El Niño on record this year?!

New ECMWF guidance shows a *75% chance of a super El Niño* by October, with some scenarios suggesting the most intense event in more than a century.

It will bring wide-reaching weather impacts that last into 2027 🧵

[Ben Noll @BenNollWeather]

March 2026 will probably become the warmest March on record for the United States and the *warmest month compared to average* overall, pending final data.

It was a remarkable 7 degrees above-average across the country as a whole.

[Ian James @ByIanJames]

Most of the snow in California’s Sierra Nevada has melted after a record-breaking heat wave.

“Climate change is influencing California’s water system quickly and severely.”
https://t.co/yMpEeA5CpI

[NWS Bay Area 🌉 @NWSBayArea]

🌡️Every single weather station we have recorded the warmest March on record. Most would have been the warmest April too. More sites below🧵

[Jeff Berardelli @WeatherProf]

Here’s another way of looking at March 2026 from climatologist Brian Brettschneider. The dark red is where the region experienced its warmest March on record. A big portion of the West concurrent with the extreme #heatwave
Much of that area was 12-16°F above normal!!

[NWS Las Vegas @NWSVegas]

March 2026 finished with an average temperature of 73.0°F here in Las Vegas.

Not only does this demolish the old March record of 66.7°F (2015), it is also warmer than any April on record here... #nvwx #VegasWeather

[Nahel Belgherze @WxNB_]

As the first reanalysis data become available, I think I can say with a fairly high degree of confidence that the March 2026 heatwave will go down as the most anomalously extreme heat event ever observed at any time of year in the southwestern U.S.

[Jeff Berardelli @WeatherProf]

Never seen anything like this. 200+ monthly records set today alone! Every pink dot means a city set its new all-time highest March temperature! That’s around 570 new monthly records in the last 4 days. Some set multiple times. By far the most rogue #heatwave the US has experienced in memory.

[Brody Cowing @Brody_wx]

At this hour, every station in Arizona and Nevada is recording a new *ALL-TIME* monthly record highs.

Numerous other states have a majority of stations also recording new all-time high temperatures.

Historic is, in my opinion, an understatement.

[NWS Los Angeles @NWSLosAngeles]

It was a record kind of day today. This is just the start of a LONG DURATION HEAT WAVE, with no relief expected the rest of the week - especially inland of the beaches. Take heat risks seriously. Make a plan now on how you will stay cool the rest of the week. #cawx

[Barack Obama @BarackObama]

Today, the Trump administration repealed the endangerment finding: the ruling that served as the basis for limits on tailpipe emissions and power plant rules. Without it, we’ll be less safe, less healthy and less able to fight climate change — all so the fossil fuel industry can make even more money.

[Geoff Bennett @GeoffRBennett]

WSJ: In the biggest rollback of climate policy yet, the Trump administration will repeal the finding that greenhouse-gas emissions endanger public health https://t.co/rEEmuHp1ZL

[The New York Times @nytimes]

Breaking News: The EPA will stop considering lives saved when setting pollution limits and instead calculate only the cost to businesses. https://t.co/uYom4BthnT

[The New York Times @nytimes]

Breaking News: President Trump said the U.S. would withdraw from the U.N.’s bedrock climate treaty, and 65 other treaties and agreements. https://t.co/dFEPbAxaDw

[NWS Los Angeles @NWSLosAngeles]

Strong northerly winds will develop tonight, transitioning into a Santa Ana wind event Fri into at least Sat. High Wind Warnings and Wind Advisories have been issued.

There is a HIGH risk for downed trees and power outages due to softened soils from recent soaking rains.

#CAwx

[NWS Los Angeles @NWSLosAngeles]

Here are some impressive 14 day rainfall totals across Southwest California! The transverse ranges across Los Angeles, Ventura, and Santa Barbara co. are the winners here.

Data courtesy of @VCPublicWorks. Disclaimer: Some points (i.e Morro Bay) may be inaccurate.

#CAwx #LARain