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Stuff to make using the site easier ..

I use abbreviations for many things:
PB = Peterborough
KE = Keene NH
Precip = Precipitation
SWS = Special Weather Statements
I will continue to add more to this list as I think of them.
I update the forecasts by 7AM and 7PM each day...more frequently if some weather thing is going on. On weekends by 9AM.
Make sure your browser is set to allow "pop-ups" from this site. I use them extensively and there is no danger of any viruses or anything like that.

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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How I started...

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 RichLefko.com 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:

Showers and storms tonight - Chance of showers Thursday

...Oppressive and Dangerous Heat Likely for the Weekend...

Hazardous Weather Outlooks

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the globe each day in the "Daily Extremes" panel below.)
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Weather Graphics  

Humid - Chance of showers - Cooler

Heating up

Hot and stormy

The heat builds back in - Humid

The heat builds east

Hot and Humid

Cooler Next Week

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See the Local Weather Discussion below...

 

Welcome to Summer in New England


Fall arrives on Sept. 23, 2019 at 3:50 AM EDT

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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 Weekends
Forecasts are for Southern NH (Nashua) with other locations noted.
(PB = Peterborough, NH) - (KE = Keene, NH)

Last Updated: Wednesday, July 17, 2019 6:54 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.

See any Hazardous Weather Outlooks below

Click on any links above to go to the warning pages

New Hampshire and Maine

Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Gray ME
352 AM EDT Wed Jul 17 2019

MEZ012>014-018>028-NHZ004>015-180800-
Southern Oxford-Southern Franklin-Southern Somerset-Interior York-
Interior Cumberland-Androscoggin-Kennebec-Interior Waldo-
Coastal York-Coastal Cumberland-Sagadahoc-Lincoln-Knox-Coastal Waldo-
Northern Carroll-Southern Grafton-Southern Carroll-Sullivan-
Merrimack-Belknap-Strafford-Cheshire-Eastern Hillsborough-
Interior Rockingham-Coastal Rockingham-
Western And Central Hillsborough-
352 AM EDT Wed Jul 17 2019

This Hazardous Weather Outlook is for Maine, south central Maine,
southwest Maine, western Maine, New Hampshire, central New
Hampshire, northern New Hampshire and southern New Hampshire.

Today and Tonight.

Scattered showers and thunderstorms this afternoon may contain gusty
winds as well as heavy rain, which could lead to localized flooding.

Thursday through Tuesday.

Scattered showers and thunderstorms may produce heavy rain, leading
to flash flooding early Thursday morning.

Hot and humid weather is expected to return to the northeast in the
coming week. Combined with increasing moisture across the region,
this could lead to heat indices in the mid to upper 90s by Friday
and reach 105F by the start of the weekend.

Massachusetts

Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Boston/Norton MA
357 AM EDT Wed Jul 17 2019

CTZ002>004-MAZ002>024-026-RIZ001>008-180800-
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA-
Western Essex MA-Eastern Essex MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA-
Suffolk MA-Eastern Norfolk MA-Northern Bristol MA-
Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA-
Southern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
Northern Middlesex MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-Bristol RI-
Washington RI-Newport RI-Block Island RI-
357 AM EDT Wed Jul 17 2019

This Hazardous Weather Outlook is for northern Connecticut, all of
Massachusetts east of Berkshire County, and Rhode Island.

Today and tonight.

Remnants of Hurricane Barry will move across Southern New England
bringing showers and scattered thunderstorms. Some of the
thunderstorms may produce locally damaging wind gusts, especially
from noon through this evening.

Heavy downpours can also be expected with 1 to 2 inch per hour rain-
fall rates which could lead to localized flooding of urban and poor
drainage areas. Heavy rainfall is forecast with showers from this
afternoon through tonight.

Thursday through Tuesday.

Thursday ... Remnants of Hurricane Barry will move across Southern
New England bringing showers and scattered thunderstorms. Heavy
downpours can be expected with 1 to 2 inch per hour rainfall rates
which could lead to localized flooding of urban and poor drainage areas.

Friday through Monday ...
Increasing heat and humidity with the hottest conditions on Saturday.
Much of the interior could have a heat index around 95F to 100F
Friday and Sunday, and a heat index of 100F up to 110F on Saturday.

A heat advisory would be issued for expected one-day heat indices of
100F to 104F, or two-day heat indices of 95F to 99F. Excessive heat
warnings for expected one-day heat indices of 105F or higher.

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Monday

 

 

 


 

Monday Night

 

 


 

Tuesday

 

 

 

 

 

Tuesday Night

 

 

 

 

 

Wednesday

 

 

 


 

Wednesday Night

Showers and thunderstorms likely before midnight, then a chance of showers. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a low around 67. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

 

 

PB/KE: A chance of showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a low around 65. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

 

 

 

Thursday

 

A 50 percent chance of showers. Cloudy, with a high near 71. East wind around 5 mph. New precipitation amounts between a tenth and quarter of an inch possible.

 

 

 

PB/KE: A 40 percent chance of showers. Mostly cloudy, with a high near 70. Calm wind becoming northeast around 5 mph. New precipitation amounts between a tenth and quarter of an inch possible.

 

 

 

 

Thursday Night

A 30 percent chance of showers before 4am. Mostly cloudy, with a low around 60. East wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

 

 

 

PB/KE: Mostly cloudy, with a low around 58. Calm wind.

 

 

Friday

Mostly sunny and hot, with a high near 92. Heat index values as high as 101. Calm wind becoming south around 5 mph.

 

 

 

PB/KE: Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph.

 


 

Friday Night

Partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm.

PB/KE: Partly cloudy, with a low around 72. Southwest wind around 5 mph.

 

 

Saturday

 

 

 


 

Saturday Night

 

 


 

Sunday

 

 

 


 

Sunday Night

 

 

 



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

See the July 2019 Almanac - RichLefko.com Link
See the current monthly Rainfall & Snowfall data - RichLefko.com
Mid-Summer to Early-Fall Temperatures Are Expected to be Mild in the Central U.S., Hot Near the Coasts - Weather Channel
Ants That Spill Out From Carry-On Bag Force United Plane Out Of Service - CBS Philly

15 Scariest Bridges in the World - Destinantion Tips
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
Interested in Apple stuff? iPhones, Macs, etc? See all of my articles at MyMac.com
Got a link to share? Send it to me - RichLefko

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Rich's Local Weather Discussion:

7/17 -  6:52 PM:  A cold front continues to drop southward out of northern VT at this hour. This front is accompanied by showers and thunderstorms. As this front drops south, showers and rain from the remnants of Hurricane Barry are pressing east. Tropical downpours may lead to some highway flooding. Eventually, the thunderstorms will transition to just plan rain showers that will slowly move east during Thursday. By Thursday night the clouds will break and a warm front will begin to pump very hot and humid air into the region. There are a variety of factors that will decide if we actually see the steam heat as advertised. Yes, there is a chance it won't be quite that hot, so stay tuned. Less humid and cooler next week. See the Hazardous Weather Outlooks.

SYNOPSIS...NH/ME
A cold front will slowly drop south through the region this
evening with showers and thunderstorms waning as the front
makes its way into southern New England. High pressure moves
across northern Maine on Thursday. A warm front will bring a hot
and humid air mass into New England Thursday night into Friday.
The heat will be most intense on Saturday. A cold front moves
in Saturday night into Sunday with showers and thunderstorms
possible as the front gradually pushes the hot and humid air
mass away. Expect more comfortable temperatures and humidity
next week.

SYNOPSIS...MA
The threat for thunderstorms and localized flash flooding this
evening was now located south of the MA turnpike. This activity
will push south through the evening and we may see a lull in the
activity. Additional showers are expected overnight into
Thursday, which may also result in localized flooding. Hot and
humid Friday through Sunday with heat- related headlines likely
but will be watching for possible surprise thunderstorm
activity. A sweeping cold front Monday with a scattered line of
showers and thunderstorm Monday behind which relief in the form
of seasonable temperatures, lower humidity is on tap into late-
July.

SHORT TERM /10 PM THIS EVENING THROUGH 6 PM THURSDAY/...
* Showers with localized heavy rainfall will continue to be a
concern overnight and into Thu especially south of the Pike

LONG TERM /THURSDAY NIGHT THROUGH WEDNESDAY/...
*/ Highlights ...

- Hot and humid Friday thru Sunday, likely heat-related headlines
- Sweeping cold front with possible showers, thunderstorms Monday
- Relief with lower humidity, comfortable conditions after Monday

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7/17 -  6:33 AM:  It is already 76° in the heat island of Boston this morning. Dew point here in Peterborough, NH is currently at 67°. That will rise into the low 70s today. I think, with the cloud cover, temperatures remain in the mid 80s, but turning very muggy. A cold front will drop south this afternoon and interact with the tropical air mass associated with the remnants of Hurricane Barry moving in from the west. That will touch off showers and thunderstorms, and some of those will include heavy downpours and gusty winds. While all of that is going on a warm front will move north into Massachusetts today. The heaviest rainfall will set up somewhere between all of these air masses, either in MA or Southern NH. There will be some street flooding wherever that line sets up. Hot weather moves in for Friday and the weekend. See the Hazardous Weather Outlooks here.

SYNOPSIS...NH/ME
A warm humid airmass develops today and tonight, with a cold
front moving slowly south across the area. The front will
produce widespread showers and thunderstorms along with heavy
rainfall and the potential for localized flooding. High pressure
and drier air will briefly build in from the north for
Thursday. The heat and humidity along with unsettled conditions
will return for Friday and the upcoming weekend.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
...Oppressive and Dangerous Heat Likely for the Weekend...

SYNOPSIS...MA
A cold front will approach the region later today, with the
threat of scattered showers and thunderstorms, along with the
potential of heavy rainfall. As the front pushes across tonight,
the remnants of Barry with bring more showers with locally
heavy rainfall, along with scattered thunderstorms which will
continue through most of Thursday. Hot and humid conditions
settle in for Friday through Sunday with heat related headlines
likely. A cold front sweeps through the region Monday with
scattered showers and thunderstorm. High pressure then builds
over New England Tuesday bringing seasonable temperatures and
much lower humidity.

* A few strong to severe thunderstorms and heavy rainfall with
localized urban & poor drainage flooding possible this afternoon

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/...

* A few strong to severe thunderstorms possible this evening
* Heavy rainfall with localized urban & poor drainage flooding
possible this evening through Thursday

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Regional Weather Discussion ...

Manchester NH —

After a comfortable start to the week, the humidity ramps up with better shower and storm chances today. More changes follow for the end of the week as extreme heat and high humidity move in for Friday and the weekend.

Today is expected to be warm (78-86°) and very humid (dew points in the 60s to lower 70s) with clouds and some partial hazy sun. Passing showers and thunderstorms with locally heavy downpours will be possible.

The best chance of showers on Thursday will be in southern areas where high temps may only be in the low 70s. With some partial sun, temps will top off near 80 in northern areas.

The hottest stretch of the summer, so far, looks like it starts Friday and lasts through the weekend. Temps could reach the mid to upper 90s in spots Saturday afternoon, and with the humidity in place heat indices could be over 100 at times! While an afternoon thundershower is possible Friday, Saturday and Sunday, most of the time will be rain-and storm-free.

These "discussions" are from the NWS, or WMUR Manchester NH, or me.

 

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