New England Weather Discussion

(With thanks to the surrounding National Weather Service Offices)

Time of the readings below: 24 Apr 2024 10:26 PM
Current Temperature: 34.7°F (-2.1) 
High Temperature for the day: 60.3 at 1:21 PM.
Low Temperature for today: 34.7 at 10:23 PM.
Rainfall Today: 0.00 inches
Current Dewpoint: 23.0°F (-0.4)
Hours of Daylight Tomorrow: 13:51
Find all of my instrument readings here.

Last complete site update: 4/24 - 6:09 PM

Schedule News: There will be NO Thursday evening weekend outlook email this week. I will update the site through Thursday morning, then the next update will be Friday evening. I will post weather through Sunday in the dailies on Thursday morning as usual. Regular updates can be expected throughout the weekend.

A strange weather day. Early morning clouds were replaced by a mostly sunny sky. That was followed by a sudden uptick in wind during the mid afternoon, and then we had a downpour as the cold front came through, which did not even register in my rain gauge. That was followed by partly sunny skies and gusty winds.

A cold front will pass through the area through the evening, kicking up some winds as well as dropping temperatures overnight. There is a freeze warning in SE MA/RI/ and much of CT tonight.

After midday clearing, scattered showers have again developed over the area. This is associated with lift from the passing cold front, and should taper into the early evening. Some light snow is also expected through early evening along the US/CAD border. Mixing taps into some low level winds through late evening, creating gusts up to 35 mph. Winds should lose gust factor around midnight, with a breeze continuing. Temps fall due to this Cold Air Advection, with widespread values around freezing or off into the 20s across the mountains.

Wave that enhanced winds Wednesday evening will have moved out for Thursday, with just a few gusts early. As mixing kicks in amid a very dry airmass, will likely see Relative Humidity values fall into the 20s and teens through the afternoon. Limited moisture through the column should provide for a nearly full sun day. Temperatures will be cooler however, and struggle to warm outside of direct sun insolation. The High-Resolution Rapid Refresh Model is depicting a seabreeze beginning early afternoon, and this should bring a wind shift to coastal communities around 2pm along with a bit more humidity as temps fall off a couple degrees.

Long range:
We`ll start off the long term period 7AM on Friday with a strong high pressure center overhead. A cool crisp morning will give way to a sunny afternoon but with below normal temperatures.

Deep layer ridging builds Friday night allowing for the fair weather to continue. Radiational cooling is likely Friday night and therefore sided with model guidance for lows.

Deep layer ridging slowly moves eastward on Saturday but still should provide for a fair weather day with temperatures returning to the 60s. A warm front approaches from the west Saturday night with the chance of showers late. However, the ridge aloft will hold firm so capped the PoPs some as it`s entirely possible that any period of showers Saturday night and Sunday could be brief. It still should remain cloudy Sunday with low level onshore flow in place, but larger scale subsidence should keep chances of rain low.

The same general setup looks to be in the cards for Monday but there is more uncertainty in temperatures as onshore flow may penetrate deeper into Maine and portions of NH. The best chance of 70+ degree readings will be over southwestern NH while lower temperatures are expected as one moves eastward. There is also a chance that some showers will spill over the ridge axis.

The best chance of measurable rainfall will come Tuesday and/or Wednesday as the ridge finally breaks down and allows a trough to approach from the west. Showers and perhaps a few thunderstorms will be possible then.

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