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Was watching a video of mine of the most intense storm I ever witnessed in the area as well as old timers in the area too. It happened August 12, 2005. On the video I took of the constant lightning for almost an hour straight I mentioned it was a dry 3 weeks prior to it and that it was a hot and muggy summer.
Now finally I can check things easily...
Went to check the Avg Summer dewpoint..... Sure enough..... 2005. Crazy to see this and interesting the most intense storm ever happened.
Lightning was blinding and thunder was constant. It was truly out of this world. Wind gust reached 70mph! Trees down and power was out for days. An EF1 Tornado touched down in Long Island after the storm passed CT. I was in Stamford at the time.
High Dew points = more intense storms
You should put it on YouTube.
There were a few good storms in July 2011, but nothing like 2013. So no real correlation here. 2013 had significantly more CG lightning than other summers, but I can't figure out why.
Be careful, there is some misinformation with the link. I tried Winston salem nc and what I got was multiple years with dews in the upper 30s for july average. Hah. The entire decade of the 70s was missing data. So yeah there are some errors. But for the larger cities and stations the information is accurate. This is Greensboro piedmont which is used for Winston salem and Greensboro and is accurate unlike the Winston salem station.
There were a few good storms in July 2011, but nothing like 2013. So no real correlation here. 2013 had significantly more CG lightning than other summers, but I can't figure out why.
Maybe is coincidental but Im thinking the pattern was ripe for it for us here in 2005 and add the fuel and boom.
It also confirms in a way from your Lightning voltage thread showing the south gets more CG then Northeast. I bet DPs are correlated in a big way with that. Like a higher Octane gasoline.
Be careful, there is some misinformation with the link. I tried Winston salem nc and what I got was multiple years with dews in the upper 30s for july average. Hah. The entire decade of the 70s was missing data. So yeah there are some errors. But for the larger cities and stations the information is accurate.
The Louisville station had a glitch in the early 70s where every day reported a dewpoint of 32F.
Quote:
Originally Posted by Cambium
Maybe is coincidental but Im thinking the pattern was ripe for it for us here in 2005 and add the fuel and boom.
It also confirms in a way from your Lightning voltage thread showing the south gets more CG then Northeast. I bet DPs are correlated in a big way with that. Like a higher Octane gasoline.
Yeah, it's probably multiple things coming together.
Awesome link, thanks Cam! Not as many years of data available here it seems. The most humid summer in recent years was 2003, with an average dew point of 67.2°F. Nearby cape Mele averaged 69.9°F last July, unfortunately records only go back to 2011.
Anyway, the dew point is currently 67°F at Nice airport.
Western US (graphic from Twin Falls) perception of dew point comfort
Washington DC (and all the eastern 2/3rds)
The Western US actually makes sense for Fall, Winter and Spring around here because we rarely go above 55 so would make sense that 45+ would be muggy when temps are under 60° I guess..... but for Summer I don't agree with them.
Washington Post is closer but as for my own perception for May to September .... I just tweaked WPs image.
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