Your comprehensive race day forecasting
I'm going to update your forecast a bit here. We originally had winds from the NW, but now they appear to be mostly N and sometimes NNE. This still means that Central Park is going to be the best place to run in terms of wind (although those hills can be tough!), but the winds are going to be headwinds for most of the course, as it travels north for most of the 20 miles. The exception to that will be from miles 15-16 over the Queensboro bridge. For north/south facing streets, even with buildings around, the wind may be amplified. There are several caused of this, but one is the downdraft effect, where wind hits the side of a building and then travels down to street level. There is also the Venturi effect, where winds are channeled into narrow spaces between buildings. Even on a day with light winds, like you'll have on Saturday, an unexpected and high gust can occur.
https://globalnews.ca/news/1616454/city-planner-wants-to-stop-wind-tunnels-created-by-some-skyscrapers/ You may find these occurrences are more likely around taller buildings in Manhattan. That being said, the winds WILL be lighter, at 4 to 6 mph. However, if you're running at 6 minute pace or faster, that will add 10+ mph to the windspeed, so take advantage of taller runners until you hit Central Park. Temperatures will be mild from the mid 40s to the low 50s, so truly ideal conditions for race day. Good luck out there!
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Chris Rozoff and Jesse Sweeney, content contributors.Chris is the expert meteorologist and MVP. Jesse is someone who watched the weather channel a lot as a child and breaks it down for the masses. Chris runs ultras. Jesse runs road and ultras. Archives
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