vortex95

A co-worker of mine lives in Pasadena MD. Over 20 years at this location w/ detailed daily obs, and he notes his dew point hits 80 often every summer due to the proximity of the bay. Does not matter if it is a near normal high temp for the day or a big heatwave.

The "NITE" is still young... Scott looking forward to "heat lightning," which he still think is a thing! LOL.

I smell derecho! Of note, the definition of derecho was modified last year and it's requirements are more specific and somewhat more restrictive. WxWiz and CoastalWx were proby not aware! https://journals.ametsoc.org/view/journals/bams/106/1/BAMS-D-24-0015.1.xml

Yah but no tstms anywhere near Weymouth!

Scott mad. Highest measured total was 21" at Darkhorse Lake MT elevation 8700 ft.

WxWiz AM PT?

Clouds a sig problem today w/ AM convection and dirty ridge clouds, so temps held back despite 1000-500 thk getting to 580 by 00z. GFS has 98-102 across SNE Thu-Fri. That appears reasonable. The MCS is of concern. CAPE up to 4600 in VT late in the day, and still near 3000 in SNE 2-3am Thu just ahead of it, which is outstanding for this area at this time of day (WxWiz EML!). HRRR shows the MCS quite strong. RRFS/NAM/ECMWF oddly do not have it, but the GFS does.

I've wanted to use torrid, but it implies dry or parched, so that matches desert-type heat better.

Idiot AI. 1.3 mi from the summit as if that is a fair comparison when dealing w/ sharp elevation. I've played w/ AI query for historical wx, and it messes up a lot. Conflates events and overlooks obvious details that make all the difference.

No discernible impact from slightly less sun angle July is the warmest month climatologically even though the days are getting shorter. This has to do w/ the Earth's heat balance, and the lag that exists in the atmosphere and ocean. 1 month lag for the atmosphere and 3 months lag for the oceans as to max avg temps.

Good ring of fire/NW flow/derecho set ups occur about every 5-8 yr in the NEUS. Looks like we will have to deal w/ this every day in some form June 30-July 4. One of better persistent setups I have seen in a while. This stuff can get nasty. Noted that Wed aftn, HRRR sfc-based CAPEs as high as 4800 in VT! EML present as well (WxWiz is happy!). The HRRR valid 00z Thu suggests derecho possible overnight parts of New England. Don't let all the capping present concern you. It is not much of factor for overnight convection when an EML is present. One of most sig features of EML convection is crazy overnight LTG shows. Par for course in the Plains, and it works the same when we get it here.

I think much of the general public is wise to all the hype, but it's always the few that yell and screen the loudest, cry foul "WE GOT NOT WARNING!" and worry about everything, and that gets all the attention and skews overall perception. Then you get knee-jerk reactions from politicians and authorities w/ silly changes and waste of resources. Cases in point, Matthew floods in NC/SC in 2016 and Ida floods in NYC in 2021. Warnings and strongly worded high flood risk statements out days in advance up the wazoo, and still politicians and authorities cried foul. It just goes to show even when fcsts are spot on, you still get nonsense. That makes me question this notion that more warnings are better from a social/political standpoint b/c you still get whiners regardless.

Yes, starting on Sat, it looks quite good for tstms in the Mid-Atlantic! Give us some good training soakers as we need the rain badly.

And on Aug 3, BOS was something like 93 at 9am, but a BDF ruined what probably would have been their all-time highest temp!

Devil's advocate? Good! Promotes more discussion and is a valid discussion position, and I take this position every so often as well! Yes, from a sensible wx POV, 100 vs. 104 is trivial. It's like last year when TPA hit 100 for the first time, when they had 99 many times. Is that *really* a big deal? The MSM sure made so it was! However, nothing is scaled properly anymore. You look at the MSM and so many on social media, slicing and dicing down everything to the smallest minutiae they can find to hype. So 100 and 104 in a social or psychological sense *is* a big deal. It really shouldn't be, but that's society for you. We have a very bad tendency to make mountains out of molehills and find issues where there is none. And yes, it will be hot and impact and the public knows that, but to embellish it w/ all these stupid bells and whistles and prophecies of doom? That is counterproductive and self-serving to those who promote senseless fear-mongering.

And where is the MSM on that? Crickets. You can't have both ways. Selective reporting is rife.

Storm #3 Aug 1924 tracked is so very close Nantucket (look at the track attached), it is essentially a landfall. Splitting hairs here I know, but the RMW and core would be over land so practical purposes, this I think it can count. As for 1930s extremes? You want to talk about "wx whiplash?" (cheesy made-up term by the media, but sometimes you have to fight fire w/ fire!). How about this? In ND during 1936, only 5 months apart, all-time record hot and cold temps for the state were set. 121 F occurred at Steele on 7/6 and -60 F at Parshall on 2/15. The 1930s was a lot more than just the Dust Bowl for U.S. wx extremes, and for the globe as well.

So I saw the point fcst today for BOS, the NWS (NBM likely) had 104 for Thu. 12z GFS MOS has 96. I can see 100 at BOS, but 104? You really think going 8 deg above MOS at DY3 is reasonable? As I have said, this is not a classic Bermuda High set up, nor is it solid NW flow subsidence for big heat coastal SNE. So hardly a 1-2-3 fcst. There are many caveats. You have a dirty ridge for lots of clouds at times that can reduce peak heating potential. Waves of convection a wildcard as to mucking up the low levels across the NEUS. And why doesn't anyone talk about this, at least for coastal locations? A rule of thumb for sea breezes is looking at the sfc pressure difference between PWM and BOS. For the biggest heat period, it is 2 mb difference or less. That means local sea breezes likely, which again, reduce max heating potential. Sure, BOS likes to flip at 5-7 pm to an offshore wind and the temp spikes, but that often knocks off a few deg for the high temp compared to if there was no sea breeze. Oh, but NBM is "it" and to heck w/ human forecasting skill, knowledge, and subjectivity? This goes beyond just the met science. 104 would tie the all-time record temp for BOS. Psychologically, that is big, and makes the hype ever worse. This has real social and economic impacts, one big one in the form of cancelling and shutting so much down excessively. How is this a good thing overall? One should not fcst all-time anything w/o a darn good reason to. Models not all in agreement BOS will tie its all-time record high temp. That's one strike. Second strike, pattern recognition comes into play here, and for the biggest heat a solid Bermuda High or NW flow set up Like August 2, 1975 is historically needed to BOS to have something like a 104 max. We don't have these here.

Yes, there is a pithy saying "facts are meaningless without context!" This is why knowledge and understanding is history (wx or otherwise) is paramount, Things looks a lot different when you have this as part of your knowledge base. And I know this is cliche, but the longer you live, the more you see things better in this case. You realize that "this has happened before, and we did just fine overall, so it is really going to be that bad or are things that bad?" Don't get me wrong, there is impact and the negative, but what, do ppl really expect no impact or negative at all ever from wx? Geez, what planet are they living on? And you have to ask, how did we ever survive before the age of more advanced technology that makes us *far* safer and more resilient to wx?! This is the problem we face -- we have made great strides in improving things across the board for mitigating wx impacts, but you have this odd human tendency to just refocus on what bad or negative is left, and run w/ that, as if it way worse than before and the end is nigh.

I stand corrected. Thx! That makes the 1975 event even more insane. Since you had the all-time NE record temp of 107 set at EWB and 100s on Cape Cod, that still would suggest sig NW flow subsidence, and yet dews still that high? You wrote: "I just think that its kind of ironic how even with all this global warming that is happening, we still haven't been able to beat 1975" Ironic is an understatement. There is more to the story, as always the case when you have front and center heated debate/problem as to what is what. You could also say why something like the record heat/Dust Bowl of the 1930s has not occurred again, or why New England got 5 direct hurricane strikes from 1938 to 1960, and it has been almost 35 years since our last direct hurricane strike (all-time record gap). or why 31 of 50 U.S. states have recorded their all-time max temp from 1900-1937. There are numerous examples like the above all over the globe. How did such events in a cooler globe that match or exceed what has occurred in recent decades w/ the globe that much warmer? This is not rocket science or conjecture, it is basic logic. These past events are a matter of fact, and can't be discounted/ignored simply b/c it doesn't fit a narrative. What this proves is that the effects of a warmer globe are *not* linear and uniform. The MSM and alarmists act like *all* gets worse across the board everywhere b/c of warmer mean temps. That is an inane and vapid notion/mindset. The Earth's climate is a chaotic, non-linear, coupled system, yet you get too many treat is as 1-2-3. Example? Warmer ocean temps and that means bigger and more intense hurricanes. Yes, everything else being equal, that is true. What they conveniently ignore is changes to mean RH vertical depth in the tropics/subtropics, changes to vertical wind shear, and general circulation changes. Ocean temps are only one part of equation for hurricanes. Hurricanes, esp. intense ones, require very specific conditions, and everything has to line up properly. Throw one thing off (shear, moist environment, or SSTs), and that puts the breaks on this significantly. And I would argue that SSTs are the least important b/c you have more than warm enough SSTs in large areas across the globe to support intense TCs, or a TC at all, and how many occur per year? It is more of a delicate balance than one may think, and "more" (higher temps in this case) does not always work in a nice, neat linear fashion, esp. when it comes to complex systems.

Well said. That a major sticking point. Every wx event now is treated or pushed as if it is the "worst ever," "unprecedented," and "should not be happening," which is absolute nonsense. They completely ignore wx history and act like all that matters is what happens in the here and now. They prey on the cognitive shortcoming of "recency bias" to mold and brainwash the masses. Also, there is a lot of $$ and power to be gained when you have problems -- real, exaggerated, or imagined/concocted. Not to mention bad news sells -- the eternal constant.

"The US will endure one of its most expansive heatwaves in history this week." "One of the most...in history" Vague statement. Quantify it! Look for these weasel lines/statements/rhetoric. It reveals a lot. What does "one of the most" mean? Is it a top 5, 10, 20, 50 event? And the heat is just getting started. How can you know the true extent of it historically before it is has happened/finished? "In history" - which history (period)? Since the last ice age? Since the U.S. was founded? Since standardized temp records commenced (1870)? In the satellite era? I have often found "history" these days to much of MSM starts no more than a generation ago or the year 2000. I have no respect for people like this that push out relentless hype and alarmism and ignore context, perspective and balance. It is bad science. All they care about is their ego, monetization, and/or pushing a narrative.

August 1975 and April 1976 had the benefit of low dew points and solid W or NW subsidence. In the summer, it's very hard to have near record/record heat and low dew points just due to climo. Obviously, August 2, 1975 was exceptional. Nothing like that since. 100 even at ACK???? They struggle to even get to 80 in summer!

Hampton Beach ydy and tdy as well. Right on the beach scrapping!

Got it.