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Technically speaking, this is not a tropical storm, but visually, it's very similar. You can see the center of circulation just south of New England. Why not tropical? This nor'easter does not have a warm core fueled by warm seas, but is fueled by clashing air masses over an old frontal boundary.

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As the nor'easter inches closer, we should see these bands build & slide north, putting Greater Boston into heavier rain within the next several hours and lasting into the night. Expect some water ponding on roadways and in low-lying areas.

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The heaviest rain for this nor'easter comes Saturday mid-afternoon/evening and into Sunday. Wide range in rain totals by Monday, depending on where bands & the heavier clusters set up. Winds remain strong through Saturday night, a touch better on Sunday. #noreaster #mawx #nhwx #riwx #boston

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The sun rises to reveal the deepening nor'easter as it approaches New England on Saturday morning. #noreaster #mawx #riwx #boston @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 25/09/2026

Night nor'easter — wind gusts are reported to reach 50-70 mph across the Cape, with a 70 mph gust in Wellfleet. Bands of heavy rain rotate in throughout Saturday; expect rain totals of 1-3" today, similar for Sunday—heaviest by the coast. Winds to 55 mph continue. #mawx #riwx #boston #noreaster

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Full rainbow on display in Central Mass!

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Ken Mahan @weatherken.bsky.social · 25/09/2026

Look at the budding nor'easter with a clear center of circulation! #mawx #riwx #ctwx #nhwx #mewx #noreaster #boston @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 25/09/2026

#Nor'easter arrives on the southern #NewEngland coast around 1- 3 p.m., #Boston ~ 5. Friday night, things deteriorate. Saturday is the worst day — rounds of heavy rain, strong winds, flooding in spots & along the coast. Sunday will be about 60-70% as intense as Saturday, with more breaks.

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Ken Mahan @weatherken.bsky.social · 23/09/2026

High wind & coastal flooding watches are popping up across Southern New England — Friday evening through Saturday night, renewed for Sunday. Timing: Friday night — Sunday night Impacts: 4-7" of rain, 10-foot breaking waves, winds up to 55 mph. Scattered flooding & power outages. #boston #mawx

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Ken Mahan @weatherken.bsky.social · 22/09/2026

Coastal storm/nor'easter update: Timing is Friday through Sunday, with multi-day totals of 4-5" for some. Minor coastal flooding & beach erosion for south-facing beaches. Storm track still messy; likely stalls just south of New England. Wind gusts of 50 mph. #mawx #riwx #noreaster #ctwx #mewx

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Ken Mahan @weatherken.bsky.social · 21/09/2026

Tracking a coastal storm that might turn into a nor'easter late Thursday/early Friday. Models are split on a classic nor'easter with gusty winds, heavy rain, & coastal flooding to a complete miss. I'm thinking we see more of a clip than a miss here. www.bostonglobe.com/2026/09/21/m... #mawx

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Ken Mahan @weatherken.bsky.social · 20/09/2026

Patriots vs. Steelers will see steady light rain, with cool temperatures in the 50s. Light winds under 10 mph. Hopefully the #Patriots hold on to the ball! #mawx #nfl @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 20/09/2026

Some confidence in a potential tropical disturbance in the North Atlantic by next weekend — New England should see coastal showers and some heavy rain. Still very early — we'll see how much juice is left in a front that breaks down over the region and what emerges; models are all over the place.

Ken Mahan @weatherken.bsky.social · 20/09/2026

The best spots with the best timing! 🍁

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Ken Mahan @weatherken.bsky.social · 13/09/2026

As steady to heavy rain advances northeast across Southern New England, expect a few minor flooding incidents as between 2-3" is possible for areas along the Mass Pike & south. Sun might come out an hour or two before sunset @bostonglobe.com #mawx #riwx #ctx #boston

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Ken Mahan @weatherken.bsky.social · 10/09/2026

A new record for the 1st hurricane of the season in the Atlantic sets tomorrow (9/11). It's been over 100 years since we've seen a hurricane-free season, so could that record be next? Of the 5 tropical storms this year, we've seen a record-low ACE too. www.bostonglobe.com/2026/09/09/m...

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Ken Mahan @weatherken.bsky.social · 08/09/2026

Increasing clouds on Tuesday, a few spotty showers north of Mass. Wednesday sees scattered showers enter later in the evening. Otherwise, it's feeling like fall is around the corner! #mawx #nhwx #riwx #boston #newengland @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 04/09/2026

Fall foliage outlook for New England! Best chance for a normal foliage season we've seen in a few years. Last winter's snow totals + some good precipitation in summer despite the heat should make the leaves pop better. www.bostonglobe.com/2026/09/04/m... #mawx #riwx #nhwx @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 01/09/2026

The latest date for the 1st hurricane of the Atlantic season in the satellite era (since 1966) sits at September 11. We're absolutely going to challenge that date! #tropics

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Ken Mahan @weatherken.bsky.social · 01/09/2026

Average temps compared to the seasonal norm for meteorological summer across Massachusetts. 90% of the state finished hotter than usual, including Boston, Worcester, and Springfield. #mawx #boston #summer @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 01/09/2026

Tropical Storm Edouard is expected to make landfall today near the TX/LA border. 6-8" of rain for most; scattered flooding likely through Wednesday. 5th named storm of the season, well behind the average pace. Still no hurricanes. Spin-up coastal storms remain the theme for this season. #tropics

Ken Mahan @weatherken.bsky.social · 31/08/2026

It's the last day of meteorological summer! New England as a whole will end much warmer than average & drier than average (except for SW CT). Likely the 3rd or 4th warmest summer on record across the region. #mawx #nhwx #riwx #vtwx #mewx #ctwx #boston @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 31/08/2026

Nepal natural disaster explained: excessive heat = thinning, unstable glacier. The mountainside glacier collapsed, releasing a massive pool of water that acted as a tsunami, once slamming the barrier lake. Water & debris flow then compressed (like putting your thumb over a hose = more power).

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Ken Mahan @weatherken.bsky.social · 28/08/2026

New England as a whole will likely end this meteorological summer with a 3rd-place finish for warmest on record. Many cities, including Boston, Manchester, Concord, & Portland, will be top-5. 9 straight years of above-avg summers for #NewEngland. #mawx #nhwx #riwx #ctwx #vtwx #mewx #boston #summer

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Ken Mahan @weatherken.bsky.social · 27/08/2026

Friday should see scattered showers and thunderstorms pop up over Central & Coastal New England during the late morning through the afternoon — this includes Greater Boston. But after Friday, we'll see a beautiful Saturday and Sunday across the region. #mawx #riwx #nhwx #boston @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 27/08/2026

Tropical Storm Dolly has formed! Wind speeds are 40 mph & tracking towards the Leeward Islands. Moderate shear will keep this storm at tropical storm strength, but still, potentially heavy rain is likely for the Northern Leeward Islands and Puerto Rico later this weekend. #tropics #dolly

Ken Mahan @weatherken.bsky.social · 27/08/2026

The disturbance in the Main Development Region continues to battle tough conditions — likely to emerge as Tropical Storm Dolly within the next 24-48 hours. Track sends the storm to the Northern Leeward Islands as a Tropical Storm with heavy rain by Sunday. #tropics #dolly @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 26/08/2026

Thursday: our pattern flips — humidity builds, breezy, scattered showers & thunderstorms during the afternoon & evening. Western New England may see an isolated severe t-storm. Highs to the upper 70s to low 80s with dew points around the mid-60s. #mawx #boston #riwx #nhwx @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 26/08/2026

Rip currents have been more problematic in recent years along Mass. & New England beaches. Check out the jump in rip current alerts issued by the NWS since 2019. More offshore weather volatility is responsible for the jump. #mawx #beach #ripcurrents #boston @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 25/08/2026

The tropics are booming across the Pacific with 7 storms & disturbances. The Atlantic currently has two areas of interest, with the Main Development Region trying to flare something up over the next couple of days. #tropics #atlantic #pacific #hurricane @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 24/08/2026

Temps & rain chances this week for Boston, really all of New England. Remaining seasonal, spotty showers rotate into Western & Northern New England each afternoon until a steadier system arrives later in the week. #mawx #riwx #nhwx #boston #newengland @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 19/08/2026

Hurricane Bob struck New England 35 years ago today & is the last time a landfalling hurricane reached the region. Bob formed during a Super El Nino season & is the strongest landfalling hurricane during such a season since 1950 (3 landfalling hurricanes total) www.bostonglobe.com/2026/08/19/m...

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Ken Mahan @weatherken.bsky.social · 18/08/2026

Between two ferns? Great show/movie. But how about between two fronts? Wednesday is the hottest day of the week. Mid-80s for most, upper 70s along the immediate coast. Mostly dry with a mix of sun & clouds, but a spot shower chance is possible, especially across NW & SE #NewEngland. #boston #mawx

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Ken Mahan @weatherken.bsky.social · 17/08/2026

Super El Nino strengthens. The tropical Pacific (El Nino region) continues to set daily high records. Now over 2.7°C (4.9°F) above the average. July was the hottest ever recorded for the U.S. & East Coast storms are more likely. www.bostonglobe.com/2026/08/15/m... #mawx #elnino @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 14/08/2026

#Lala is likely to become a hurricane by Saturday morning. On track to hit the Big Island of #Hawaii. This would be the 1st ever hurricane landfall on the Big Island. Heavy rain, mudslides, and beach erosion all in play. #hiwx #tropics @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 14/08/2026

Those isolated severe storms had gusts to 60-100 mph & some hail. A cold pool aloft amplified downdrafts, likely micro & macrobursts for Portland, Vermont, and Coastal Connecticut. Some hail in Bourne. #mawx #nhwx #ctwx #mewx #vtwx #riwx @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 13/08/2026

A pop-up severe t-storm warning for Southeast Mass. with heavy downpours and gusty winds. Possible small hail. This includes Middleborough, Carver, Wareham, to Bourne. #mawx #boston

Ken Mahan @weatherken.bsky.social · 13/08/2026

Dusting off the Patriots Game weather graphic! Preseason game #1 should be a pleasant one. Temps in the 70s for the most part, a couple of clouds floating about. Dew points in the 50s — can't get much better. #mawx #patriots #colts #nfl @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 12/08/2026

The Atlantic has a flurry of tropical activity. TS Cristobal formed in the Northern Atlantic & will stay a fish storm. Likely Tropical Storm Dolly could bring heavy rain to the Leeward Islands & Puerto Rico by the end of the weekend. www.bostonglobe.com/2026/08/10/m... #tropics @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 11/08/2026

United States (Lower 48) saw its hottest month on record (July). New England ended 1.7 degrees above normal. Also, global sea surface temperatures were the warmest on record for July. This sets up an August that may see more extreme events. @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 11/08/2026

Tropics! There's a 70% chance of tropical development by the end of the week in the Main Development Region as a window of low shear opens. Consensus shows a northern pass of the Leeward Islands next week, but tropical storm to Cat 2 hurricane strength is in play. #tropics @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 10/08/2026

The NWS confirms a MACROBURST from Saturday afternoon for the #Springfield area. Peak winds ~70 mph. Macro & microbursts aren't uncommon in Western Mass. & Berkshires. A macroburst is straight-line wind damage over at least 2.5 miles. A microburst is more localized. #mawx @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 09/08/2026

Sunday weather notes! Boston clocked its 2nd heatwave of the summer, the 3rd for many west of the city. A likely microburst in #Springfield on Saturday. And the Atlantic has two areas of interest for the 1st time this season. Uphill climb through for formation. #boston #mawx @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 07/08/2026

Heat & humidity with an afternoon shower chance continues into the weekend across Boston and most of New England. Highs to the upper 80s and low 90s, with heat index values well into the mid-90s for both Saturday and Sunday. #mawx #boston @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 06/08/2026

The National Hurricane Center shaved their Atlantic hurricane season forecast a bit, dropping to 7 - 13 named storms, 2 - 6 hurricanes, and 0 - 2 major hurricanes. Last time there were no major hurricanes in a season? 1994. #mawx #tropics @bostonglobe.com

Ken Mahan @weatherken.bsky.social · 06/08/2026

Boooooo! I don't want to believe that we're now in the summer decline; see you later, sunlight. #mawx #riwx #nhwx #newengland @bostonglobe.com

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Ken Mahan @weatherken.bsky.social · 05/08/2026

Peak summer heat & humidity set to blanket Boston & New England Thursday through Sunday, peaking Friday. Temps hug the low 90s, dew points to the 70s, heat index values to near 100°. Daily pop-up showers & t-storms during this stretch. #mawx #nhwx #riwx #boston #newengland @bostonglobe.com