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I am based in Peterborough, NH, but the main forecasts (for now) are for Nashua, NH and the region. I send out an e-mail every Thursday that covers the upcoming weekend forecast. I also send out advisories when issued by the NWS to this list. You will NEVER get SPAM or e-mail from anyone else. I don't share my mail list with anyone. If you'd like to be a part of that mailing, send your e-mail address to: Mail List

What is a "ShortWave"?

Also known as Shortwave Trough; a disturbance in the mid or upper part of the atmosphere which induces upward motion ahead of it. If other conditions are favorable, the upward motion can contribute to thunderstorm development ahead of a shortwave.

MCS = Mesoscale Convective System (Bunch of thunderstorms)

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I've been a weather hobbyist all of my life. As a child, I used to stand outside in the rain during thunderstorms just to watch the lightning. Back in the '70s getting weather information was a chore. I remember listening to NWS broadcasts during hurricane season and plotting these on a piece of paper. After moving to New England I finally bought my first real weather station made by Davis Instruments. I began to record daily weather data in a journal. I had a few people, where I work, who knew I was a weather nut, ask me to send them an e-mail on the weekend forecast. So two grew to five then 15, then 40, and now my Thursday weekend mail list reaches over 200+ people. I took some web programming classes in the late '90s and a few years after that was born. I wanted to share my hobby with anyone who was interested, and I am quite overwhelmed with how many people seem to be interested. I've gotten so many "thank you's" for a variety of reasons..."saved my party", "saved my wedding", "saved my life." It's been fun and rewarding all at the same time.
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Breaking Weather Headlines:

Mostly cloudy tonight - Mostly cloudy Saturday, mild - Much cooler on Sunday

More snowfall in the West, Hurricane Epsilon stirs up conditions in the East

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Cold front crosses the region

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Patterns this week and beyond - Other News

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See the Local Weather Discussion below...


Welcome to Fall in New England

Winter arrives on Monday, December 21, 2020 at 5:02 AM EST

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Rich's Local Weather Discussion
Regional Weather Discussion

Your Daily Forecast 3 Days at a Time

Updates twice per day, weekdays, by 7:00AM and again by 7:30PM- 9AM/7PM on Weekend
Forecasts are for Southern NH (Nashua) with other locations noted.
(PB = Peterborough, NH) - (KE = Keene, NH)

Last Updated: Friday, October 23, 2020 5:17 PM

If the Advisory logo above is flashing, go to the Advisories link in the navigation menu,
which can be found on left side of the page. Or click on the links below.


New Hampshire and Maine




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Monday Night











Tuesday Night









Wednesday Night












Thursday Night











Friday Night

Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 53. Southeast wind around 5 mph.

PB/KE: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54. South wind around 5 mph.




Mostly cloudy, with a high near 68. South wind 5 to 10 mph becoming west in the afternoon.

PB/KE: Cloudy, then gradually becoming mostly sunny, with a high near 63. Southwest wind 5 to 10 mph becoming west in the afternoon.


Saturday Night

Mostly clear, with a low around 34. Northwest wind 5 to 10 mph.

PB/KE: Mostly clear, with a low around 31. Northwest wind 5 to 10 mph.



Sunny, with a high near 54. North wind around 5 mph.

PB/KE: Sunny, with a high near 49. North wind around 5 mph.


Sunday Night

Partly cloudy, with a low around 36. Calm wind.




PB/KE: Mostly cloudy, with a low around 33. Calm wind.


Your weekend forecast is always posted on the Thursday morning before the weekend
To see an extended forecast for your zone, look at the Extended Forecast page. 

Links of Interest

How to Survive 5 Extreme Weather Scenarios - Outside
See the current monthly Rainfall & Snowfall data -
Polish divers to defuse WWII 'earthquake bomb' on German border - DW.Com
NASA is getting ready to land on an asteroid that may hold the building blocks of life - Fox Science
Hairy caterpillar with 'venomous spines' found in Virginia, prompting warning - Fox Science
Florida hunters capture record breaking 18-foot Burmese python - Fox News
Tasmanian devils are coming back to Australia for first time in 3,000 years - Fox Science
See the October 2020 Almanac - Link

Areas of NH now in Severe Drought Stage - Drought Monitor
Death Valley reports world's hottest temperature on record in 89 years
18 Things You Should Never Do at Home During Severe Weather - Family Handyman

81 Severe Weather Survival Tips Every Homeowner Must Know - Family Handyman
TOXIC LEGACY Poisonous dust from 9/11 attack has given almost 10,000 New Yorkers cancer - The Sun
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Rich's Local Weather Discussion:

10/23 -  5:05 PM:  It was a cloudy day and that will translate into a cloudy night. That will keep the temps from dropping very far. A trailing cold front extended southward through the Mississippi Valley. While we managed to break out into some sunshine near the international border...GOES imagery showed an extensive low cloud deck persisted across the remainder of the area. We may see a few glimpses of sunshine across extreme southeast New Hampshire through dusk as clouds have begun to thin there. However...there was an area of marine stratus lurking offshore that was moving westward towards the coast. Where we`ve seen sunshine today temperatures had warmed into the 60s with a few 70 degree readings over far northern New Hampshire. For tonight...low clouds and some patchy fog should be the rule in an increasingly moist southerly flow ahead of the approaching cold front. It`ll be an unseasonably mild night with lows in the upper 40s to lower 50s. On Saturday...a strong cold front will cross the area with clouds and scattered rain showers across interior sections. The best dynamics pass well to our north and we`ll be lucky to wring out a few showers across mainly the higher terrain with its passage. The southern half of New Hampshire as well as the coastal plain of Maine will warm into the lower and mid 60s ahead of the front. The remainder of the area will see highs only in the 50s given cloud cover...scattered showers...and a morning frontal passage. We`ll see afternoon clearing behind the departing cold front along with a developing westerly breeze. Mountain sections should hang on to a few clouds in the post- frontal upslope flow. Mainly clear and cold tomorrow night with winds become light. Lows will range from the mid and upper 20s in the mountains to lower and mid 30s elsewhere. Fast moving systems with a west to southwest flow aloft through the period. High pressure builds in Sunday with cold temperatures. This sets the stage for a cold Sunday night as high pressure crests overhead. temperatures will fall into the 20s and 30s. Clouds will increase late Sunday night and light precipitation will break out Monday morning in western New Hampshire. With cold temperatures the precipitation will likely start as snow but quickly change to rain. The precipitation spreads northeast with rain in southern areas and snow in the mountains for a time. Warmer air will gradually change precipitation to rain in the north but the higher elevations may see up to an inch of snow before the changeover. Tuesday the cold front will be slow to sink south and there might be some lingering precipitation in southern areas. Wednesday high pressure will build in making for a nice day but colder than normal. Wednesday night a cold front will approach and move off the coast Thursday morning. This front might produce a few light showers. Friday will see high pressure build overhead but temperatures will be cold with highs in the 30s and 40s. Stay tuned.

Low pressure passing to our west will drag a warm front north across
the area tonight. A trailing cold front will cross the area
Saturday bringing a chance for showers across interior sections. High
pressure follows the front for Saturday night and Sunday with
cooler temperatures and fair weather. An active weather pattern
is expected for the upcoming work week with chances for precipitation
Monday and Tuesday.

High pressure will maintain dry and mild weather tonight and
Saturday. A dry cold front will move across southern New
England Saturday afternoon and evening. In wake of the front
much colder is expected as a Canadian high builds in. The dry
weather continues but it will be much cooler on Sunday. A
couple waves of low pressure and a frontal boundary will result
in several chances of showers next week. Not a washout as there
will be many hours of dry weather especially around Wednesday.
Seasonably cool temperatures expected much of next week, with
highs in the 50s to near 60 and night time lows in the 30s and 40s.



* Cloudy with areas of fog. Could have some drizzle across the
eastern slopes of the Berkshires.



* Few light showers possible across the west, but generally a dry
cold frontal passage on Saturday. Skies clearing out during the

* Much cooler Saturday night into Sunday morning.

10/23 -  6:03 AM:  There are some pockets of drizzle around early this morning. Early morning satellite imagery reveals a somewhat complex weather pattern this morning. High pressure entering the Gulf of Saint Lawrence is getting shoved in between low pressure moving northeast out of the Great Lakes and the tropical system moving north through the North Atlantic. Mid level cloudiness exists across northern parts of the area in association with warm advection ahead of the low pressure system developing to our west. The warm front is gradually sharpening to our west and north, so will only provide a sprinkle at best this morning in the far north. Meanwhile low level clouds continue to curl in from the North Atlantic around the southern periphery of high pressure. Expect this cloud cover over southern and coastal areas to linger through most of the day today while northern areas, especially on the other side of the mountain ridges, clear out at least somewhat. With onshore flow spreading area wide today, expect temperatures to be relatively steady over the coastal plain in the upper 50s to near 60. Meanwhile on the other side of the mountains in western and northern New Hampshire the temperature will warm into the mid 60s with more sunshine. We continue to see an onshore flow tonight around the back side of the lingering high pressure axis between the approaching frontal system and the offshore tropical system. Indications are some greater low level moisture gets sucked in toward the coast this evening which should provide a fresh batch of low clouds and possibly some fog and drizzle tonight. This will be most likely to affect the coast of Maine but could spread westward into eastern New Hampshire as well. Temperatures will be relatively steady in the 50s given the very moist air mass in place. Favored the raw model guidance for lows tonight as MOS was too cool. Temperatures should be similar to this morning if not a few degrees warmer. As low pressure pulls northeast through Quebec a sharp cold front pushes in from the west across New England on Saturday. While much of the energy with this wave tracks to the north, we won`t see a whole lot of precipitation as the front moves through. The best chance for showers along the front will be in the north. The whole area will see a wind shift to the northwest with drier air moving in behind the front Saturday evening. Much cooler on Sunday with highs around 50°. Stay tuned.

Low pressure will pass to our west today lifting a warm front
through the area with mainly dry conditions and mostly cloudy
skies. A cold front will cross the area Saturday bringing a
chance of showers across the interior. High pressure builds in
behind the front Sunday with cooler temperatures. An active
weather pattern is expected for the upcoming work week with
chances for precipitation Monday and Tuesday.

High pressure near coastal New England will maintain dry and
unseasonably mild weather through tonight. A mainly dry cold
front will progress through Southern New England Saturday
afternoon, bringing a change in air mass toward more seasonable
temperatures by later Saturday. Canadian high pressure will
result in continued dry but much cooler temperatures Saturday
night and Sunday. A couple waves of low pressure and a frontal
boundary will likely result in a period or two of wet weather
sometime Monday into Tuesday. Seasonably cool temperatures are
expected into the second half of next week.


* Dry & becoming much cooler Saturday night & Sunday

* A period or two of wet weather likely Mon into Tue

* Seasonably cool Wed and Thu


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Regional Weather Discussion ...

Manchester NH:

Low clouds/fog Friday am will give way to some brightening by afternoon. It will be cooler but very close to normal for this time of year (upper 50s to low 60s for many).

Another front will move through Saturday with a passing shower possible (some partial sun too). Highs in the mid to upper 60s for many (upper 50s north).

A partly sunny and cooler Sunday follows as highs will be mainly back into the 50s (40s up north).

Showers likely on Monday that could begin as a wintry mix up north.


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