Tropical Storm Henri – 8 AM Saturday 8.21.21 Update

Good morning! Tropical Storm Henri is headed right for the south coast of New England, although it will weaken very rapidly as it makes landfall, which will lead to limited impacts outside of far southern New England and southeast New York. Trends yesterday brought the landfall area all the way to western Long Island with a second landfall in southwest Connecticut. The NHC forecast as of 8 am (below) reflects an idea similar to this, although overnight guidance actually brought the track to the east, with a landfall over southeast Connecticut or Rhode Island now being more likely.

weather 2021-08-21.003
In any event, barring a dramatic shift in the landfall toward Cape Cod, we should remain east of the track, which leaves the Lowell/Dracut area (and surrounding areas of northeast MA and southern NH) out of the heaviest rainfall. Right now, it looks like a half-inch to 1.5 inches of rain is likely here, mostly Sunday afternoon into early Monday morning. Well to the west, over 4″ of rain is possible in portions of western CT, western MA, and southeast NY. However, given the amount of rain we have had recently, minor flooding issues are still possible. Always remember to avoid flooded roads. In the event there is a bigger track shift to the east, that could put us in play for 2″ or more of rain and I’ll have an update if that becomes more likely.

As for wind, the strongest winds will also stay away from our area. Tropical storm force sustained winds are likely for a portion of the CT/RI coasts, Long Island, and potentially southeast MA for a period of time Sunday evening. The system will dramatically weaken as soon as it makes landfall, so in our region, expect winds of 10-20 mph, with a period of gusts of 30-40 mph, Sunday afternoon and evening. While it won’t be a major issue locally, minor damage is possible. This shouldn’t be affected too much by any track shifts, as the storm would have to retain some strength as it approaches the Mass Pike and beyond for us to truly get into some stronger winds. It looks like that is not going to happen, as the storm looks to weaken dramatically upon landfall.

I will have an update this afternoon if changes to the forecast warrant. Have a good day!


Published by Nathan Coram

Hello! I'm Nathan Coram, a 20 year old meteorology student and weather geek, and am in my junior year at UMass Lowell as a meteorology major. I am the current Vice President of the UML American Meteorological Society Local Student Chapter. Prior to at UML, I attended the Dracut school system for my K-12 years, having graduated from Dracut High in 2018. I first got into weather with the December 2008 ice storm, which knocked out my electricity for 4 days. I had no idea how it could be raining and becoming ice immediately, and how rain can knock out power. (Now I do - warm layer aloft, cold air at surface). But I didn't really get into it until the heat of July 2010 and specifically a few severe weather events during that month, followed by the year 2011, which featured several high profile weather events. Since then I have had a growing interest, and am hoping to make it into the meteorology field, preferably with NOAA/NWS. But for now, I'm blogging here on Dracut Weather (also on Twitter and Facebook), helping with the UML Weather Center social media, and tweeting about the weather on my own account as well. Thanks for visiting!

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: