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The biggest heat dome on the planet! Anything from long range models on a major pattern change coming up in the US that breaks this heat dome apart?

Too aggressive bringing in HP. Would have been a good cast for earlier this past week, tho, when HP moved in, and cooled things off pretty good.

Temps in the mid/upper 70's again yesterday. Stms petered out as they moved E. They did get decent rain to the N & W tho. As the heat builds this weekend. Looks like the Lake will help keep things a little cooler. Point has upper 80's for me, but that cast hasn't been reliable. Inland areas may get there.

The -PDO 500 mb index has been more impressive than the SST index. Notice the near record high pressure north of Hawaii. This has displaced the Aleutian low into Alaska with the local cool there and warmth everywhere else in North America. This is a first during the month of July for such a strong El Niño. The Aleutian low is usually closer to East Asia with a developing super El Niño. The seasonal models as recently as around May 1st were going with this super El Niño composite especially on the Pacific side. So another case of seasonal models just defaulting to past El Niño climatology rather than seeing the actual pattern. The run around July 1st once the period was actually starting did a little better. But still missed the magnitude of the pattern. July composite strongest El Ninos Verification July 1-20th with the 500 mb -PDO index one of the strongest on record for the period

July 25 2000: An F4 tornado hits the town of Granite Falls. One person is killed and there is 20 million dollars in damage. 1915: Frost hits northeastern Minnesota. For Saturday, July 25, 2026 1891 - The mercury hit 109 degrees at Los Angeles, CA, marking the peak of a torrid heat wave. (David Ludlum) 1956 - The Andrea Doria sank in dense fog near Nantucket Lightship, MA. The ship was rammed by the Swedish-American liner, Stockholm, forty-five miles off the coast of Massachusetts. Fifty-two persons drowned, or were killed by the impact. (David Ludlum) (The Weather Channel) 1986 - Tremendous hailstones pounded parts of South Dakota damaging crops, buildings and vehicles. Hail piled two feet deep at Black Hawk and northern Rapid City. Hail an inch and a quarter in diameter fell for 85 minutes near Miller and Huron, piling up to depths of two feet. (The Weather Channel) 1987 - Sixteen cities in the eastern U.S. reported record high temperatures for the date. Beckley, WV, equalled their all-time record high of 91 degrees, established just the previous day. It marked their fourth day in a row of 90 degree heat, after hitting 90 degrees just twice in the previous 25 years of records. The water temperature of Lake Erie at Buffalo, NY, reached 79 degrees, the warmest reading in 52 years of records. (The National Weather Summary) 1988 - Thunderstorms produced severe weather from central Kansas to western Kentucky and southern Illinois during the day. Thunderstorms produced tennis ball size hail at Union, MO, and winds gusts to 65 mph at Sedalia, MO. Five cities in Washington and Oregon reported record high temperatures for the date. Medford, OR, hit 107 degrees. (The National Weather Summary) (Storm Data) 1989 - Early afternoon thunderstorms over west central Missouri drenched the town of Ferguson with four inches of rain. Early evening thunderstorms in Pennsylvania produced more than two inches of rain north of Avella in one hour. (The National Weather Summary) Observances: 25 Sat National Hire A Veteran Day 25 Sat Christmas In July 25 Sat Carousel Day 25 Sat Culinarians Day 25 Sat Health and Happiness with Hypnosis Day 25 Sat International Red Shoe Day 25 Sat National Drowning Prevention Day 25 Sat National Merry Go Round Day 25 Sat National Thread the Needle Day 25 Sat National Wine and Cheese Day 25 Sat St James TG 25 Sat World Drowning Prevention Day 25 Sat Houston Day 25 Sat National Hot Fudge Sundae Day

To compare to the prior Nino, July was similarly strongly -PDO and it hit most neg ~Oct 1st. Then it rose to a more moderate -PDO:

Beautiful weather we're having. I don't want to rain on anyone's parade, but my area needs beneficial rain soon.

I tend to agree, to a certain point, that this December will not be like last December. BammWx thinks a warm December so litle snow. Time will tell.

This has to be confirmed but I think RDU just broke the record for wettest July in its history

Some wildfire smoke up there today from the PAC NW fires.

and why is that

Sept and October possibly both near to below average.

I didn’t get below 67 last night.

There's probably going to be an incredibly powerful sub tropical jet this season too. A byproduct of the WQBO is further enhancement to that jet. QBO and ENSO Effects on the Mean Meridional Circulation, Polar Vortex, Subtropical Westerly Jets, and Wave Patterns During Boreal Winter https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022JD036691

The Euro is a legit severe solution for Tuesday. The GFS screams "dying MCS moves through at 9AM and kills off the afternoon threat".

Pray for the West

I think the -PDO stays solidly negative until the early Fall when the pacific jet starts to climatologically strengthen for the season. At that point it will open the door for disruptions to it. The warming waters off the Western US does work against the -PDO but it’s obviously just one component of it.

Exciting times ahead.

Yeah, this sure is a -PDO. Fairly textbook looking actually in the North Pacific. Here's what makes that feature really interesting to me, especially in the face of this burgeoning super nino. Battle of heavyweights here. The interplay between these 2 should be fascinating. A deeply entrenched -PDO state vs potentially a record breaking el nino. When the PDO is out of phase with enso there is evidence it can act against it. Whether that is el nino or la nina. To the point of cancelling it out completely in the extratropics. Now, I am not sitting here thinking this event will be cancelled out by the PDO. That's not the point of this post. Nor do I think that will be the case. I do think there will be some sort of modulation though and think it will be interesting to watch how that goes and evolves. Additionally, could this be the event finally signaling a longer term change for the north pacific? I feel like that could be plausible given the magnitude and timing of it but who knows. Sometimes I see people dismissive of the PDO, however research suggests it's probably not a great idea to do that. Modulation of the Northern Winter Stratospheric El Niño–Southern Oscillation Teleconnection by the PDO https://journals.ametsoc.org/view/journals/clim/32/18/jcli-d-19-0087.1.xml

At this time last year it was -3, so not as extreme as recent years. It will be interesting to see if we break into positive territory by December.

Now at 2.75

Maybe, but the 30-year norms of 50 years ago were about 2F lower than the 1991-2020s.

Agreed ... but aren't they almost mutually exclusive? 50 years ago ( personal conjecture) this on-setting NINO and it's weird 'ominous' portends that seems almost metaphysically prescient ... whatever it is and all of it probably can't happen. Why? Because this has a non-linear force - not readily observable - coming from 'unrealized' climate change. An aspect that is quite plausibly constructively interfering. The oceans have absorbed 90% of the warming that "should have" been atmospherically kinetic and or stored in WV, since the Industrial Revolution. How much absorption can happen before something is forcibly given back..? Realization forcibly occurring, incrementally. Like what happen in the 2023. That global pan-systemic temperature burst that spring is give back. As an aside... maybe that synergy is sensible, like collectively in a subconscious awareness, which is why-for ( probably ) the prescient portends. It doesn't hurt that the models are actually jacking the historical this and that, either. But it's like watching a comeback in sports. The team may still be down 10 points with time a factor, but you know somehow some way they're winning that game. In this case tho, we're the losing side... It seems this NINO is catapulting off a background that is "elastically" under tension. It trying to restore to equilibrium at all times. That restorative force is in the upward ( climate change ) direction ... 2023, this NINO, they become like leaks in the damn, and that tension is squeezing through. Seriously though, I speculate that the this NINO is in a sort of synergistic/constructive feedback with the background state. A state that could not have been the case 50 years ago, because obviously the background was significantly enough different. Less donuts in the doughnut stuffing machine's cartridge that Homer Simpson experienced in Hell.

Low of 61. @Blizzard of 93 I’ll do the calculation Monday morning, have a busy weekend. Enjoy it y’all!