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2026 Mid-Atlantic Severe Storm General Discussion
MN Transplant replied to Kmlwx's topic in Mid Atlantic
There's a version I used in my graduate studies called NCAPE (Normalized CAPE). Normalized CAPE (J/kg)The NCAPE (Normalized CAPE) is CAPE that is divided by the depth of the buoyancy layer (units of m s**-2). Values near or less than .1 suggest a "tall, skinny" CAPE profile with relatively weak parcel accelerations, while values closer to .3 to .4 suggest a "fat" CAPE profile with large parcel accelerations possible. Normalized CAPE and lifted indicies are similar measures of instability.- 1,469 replies
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2026-2027 Super El Nino
snowman19 replied to Stormchaserchuck1's topic in Weather Forecasting and Discussion
Rapid warming in the western IOD region and cooling in the eastern IOD region around Indonesia/Australia. The +IOD is coming on fast. Once it gets established, it’s going to project onto (constructively interfere) that huge El Niño standing wave signal you showed and it’s going to increase the Bjerknes feedback even more -
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Central PA Summer 2026 Discussion/Obs Thread
Blizzard of 93 replied to Voyager's topic in Upstate New York/Pennsylvania
These well below normal last few days have knocked down the monthly temperature departure at MDT to just +1.5 through yesterday. It’s hard to believe with the two heatwaves that we had earlier this month, but outside of that, it’s been a fairly pleasant July in terms of temperature. The severe weather has been the worst part for many of us. @Mount Joy Snowman it’s time for your back of the envelope calculation for MDT’s final monthly departure estimate. Do you think there’s a chance that a near normal month goes in the books when all is said and done? -
A cool 60 degrees after a light rain of about 0.15. I like seeing no heat wave in the forecast
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Gorgeous morning to play a softball tourney
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Messy setup.
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I'm down here just inland from Fenwick. Light shows and clouds here this morning. Hopefully it clears up this morning.
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Yep light rain just up the way from you in Lewes this morning.
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Models hinting at a rainy cutoff low this week. Details as to where the heaviest convection focuses will have to wait. Since the timing of how soon the upper low cuts off and captures the surface low vary from model to model.
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Was just about to post this. Don’t expect this, although NAM had this on and off the other day. My friend might be pissed since we left his boat out without the cover…
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Rain in OC this am. Short term models last night were too far south with the rain.
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Chester County PA - Analytical Battle of Actual vs. Altered Climate Data
chubbs replied to ChescoWx's topic in Climate Change
OK lets see what the raw data says. After all bias adjustments are based solely on raw data. If the the steel mill impacted the Coatesville station it would be reflected in the raw data and in the NCEI bias adjustment. Below is a plot of Coatesville 1SW minus West Chester and the Coatesville bias adjustment (right axis). A station change at either Coatesville or West Chester causes a sudden change in relative temperature of Coatesville and West Chester. While a growing steel mill or an urban heat island in one of the towns would cause a gradual change in the difference between the two stations. There are many large sharp changes in Coatesville's temperature relative to West Chester. These are all station changes. There is no indication of a gradual long-term trend so a large change in the steel mill impact can be ruled out. Station changes are the primary cause of Coatesville's (and West Chester's) cooling. The Coatesville bias adjustment (right axis) tracks the raw temperature data at Coatesville and West Chester closely, capturing the each wide swing due to station changes. The only exception to the close tracking is when West Chester had station changes: 1915, the 1920s, the 1960s and with the West Chester move in 1970. Both stations start out at about the same temperature in the 1890s. Between 1894 and the 1960s, most of the chart movement is due to Coatesville station changes as West Chester experienced relatively minor station changes. After 1920 Coatesville cools relative to West Chester. The change is anything but gradual with several large swings due to station changes. From the late 1940s to the late 1950s Coatesville is 2F cooler than West Chester. The rural Doe Run Road site is the coolest Coatesville station location. Coatesville warms by roughly 0.5F around 1960. After 1960 the main station changes are at West Chester, ending in the 1970 move which cools West Chester to down Coatesville's level. Note that station changes can be warming or cooling, but on balance both stations cooled significantly over the period due to station changes. This exercise is another feather in NCEI's cap. The Coatesville and West Chester raw data shows that bias adjustments are needed and accurate in Chester County. No surprise if you have been reading the thread. -
Central PA Summer 2026 Discussion/Obs Thread
pawatch replied to Voyager's topic in Upstate New York/Pennsylvania
54 degrees this morning. Enjoy the weekend! -
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The only thing I disagreed with was taking Rogers out at 88 pitches. But to be fair...Garcia didn't make a bad pitch; it landed way below the zone and the dude somehow golfed it. But that only tied the game; the blown opportunity in the 9th, stupid error in the 10th. Core issues once again that have been going on before this year, smh
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2026-2027 Super El Nino
TriPol replied to Stormchaserchuck1's topic in Weather Forecasting and Discussion
Warm how? Am I going to need an air conditioner?
