My 24th Year Delivering Weather to New Englanders
Weather for New England and the World
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Light Showers, Fog, Drizzle Tonight
Coastal Hazards Are Active
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Your Daily Forecast
Three Days at a time
Updates twice per day, weekdays, by 7:30AM and again by 7:30PM.
9AM and 7PM on Weekends.
Forecasts are for Southern NH (Nashua) to Keene NH with other locations noted.
(PB = Peterborough, NH) - (KE = Keene, NH)
The Weekend Outlooks are added every Thursday morning. (Forecasts through Sunday)
Warnings and/or Advisories
If the banner above is flashing, then advisories or warnings are active
Coastal Hazards Are Active from MA to Maine
Coastal Flood Advisory
Coastal Hazard Message
National Weather Service Gray ME
306 PM EDT Fri Sep 20 2024
MEZ023-024-NHZ014-210800- /O.EXP.KGYX.CF.Y.0017.000000T0000Z-240920T1900Z/ /O.NEW.KGYX.CF.Y.0018.240921T0500Z-240921T0800Z/ /O.NEW.KGYX.SU.Y.0005.240921T1200Z-240921T2300Z/ /O.CON.KGYX.SU.Y.0004.000000T0000Z-240920T2300Z/ Coastal York-Coastal Cumberland-Coastal Rockingham-
306 PM EDT Fri Sep 20 2024
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 1 AM TO 4 AM EDT SATURDAY... ...HIGH SURF ADVISORY IN EFFECT FROM 8 AM TO 7 PM EDT SATURDAY...
* WHAT...For the first High Surf Advisory, large breaking waves of 4 to 7 feet, for the Coastal Flood Advisory, minor coastal flooding and splash-over expected around the time of high tide. Several consecutive high tides may lead to minor coastal flooding into Monday.
* WHERE...In Maine, Coastal York and Coastal Cumberland Counties. In New Hampshire, Coastal Rockingham County.
* WHEN...For the first High Surf Advisory, until 7 PM EDT this evening. For the Coastal Flood Advisory, from 1 AM to 4 AM EDT Saturday. For the second High Surf Advisory, from 8 AM to 7 PM EDT Saturday.
* IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Inexperienced swimmers should remain out of the water due to dangerous surf conditions.
============================================================
Coastal Flood Advisory
Coastal Hazard Message
National Weather Service Boston/Norton MA
231 PM EDT Fri Sep 20 2024
MAZ007-019-022-024-210745- /O.NEW.KBOX.CF.Y.0011.240922T1600Z-240922T2200Z/ /O.EXT.KBOX.SU.Y.0006.000000T0000Z-240921T2300Z/ /O.CON.KBOX.CF.Y.0008.000000T0000Z-240920T2200Z/ /O.CON.KBOX.CF.Y.0009.240921T0300Z-240921T0900Z/ /O.CON.KBOX.CF.Y.0010.240921T1500Z-240921T2100Z/ Eastern Essex MA-Eastern Plymouth MA-Barnstable MA-Nantucket MA-
231 PM EDT Fri Sep 20 2024
...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 7 PM EDT SATURDAY... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT THIS EVENING... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 5 AM EDT SATURDAY... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 11 AM TO 5 PM EDT SATURDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM NOON TO 6 PM EDT SUNDAY...
* WHAT...For the High Surf Advisory, large breaking waves of 10 to 14 feet in the surf zone. For the first Coastal Flood Advisory, up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways (1.4 to
13.7 feet Mean Lower Low Water). For the second Coastal Flood Advisory, up to one foot of inundation above ground level expected in low- lying areas near shorelines and tidal waterways (3.9 to 13.3 feet Mean Lower Low Water). For the third Coastal Flood Advisory, one to two feet of inundation above ground level expected in low- lying areas near shorelines and tidal waterways (4.3 to 13.9 feet Mean Lower Low Water). For the additional Coastal Flood Advisory, one to two feet of inundation above ground level expected in low- lying areas near shorelines and tidal waterways (4.4 to 13.7 feet Mean Lower Low Water).
* WHERE...Eastern Essex MA, Eastern Plymouth MA, Barnstable MA and Nantucket MA Counties.
* WHEN...For the High Surf Advisory, until 7 PM EDT Saturday. For the first Coastal Flood Advisory, until 6 PM EDT this evening. For the second Coastal Flood Advisory, from 11 PM this evening to 5 AM EDT Saturday. For the third Coastal Flood Advisory, from 11 AM to 5 PM EDT Saturday. For the additional Coastal Flood Advisory, from noon to 6 PM EDT Sunday.
* IMPACTS...Most roads remain passable. Flooding up to one foot deep affects coastal roads on the North Shore from Salem to Gloucester and Newburyport. Rough surf will cause flooding on some coastal roads around the time of high tide due to splashover. Roads remain passable. Low lying areas and roads near Nantucket Harbor, including Easy Street, may experience pockets of shallow flooding less than one foot deep. Dangerous swimming and surfing conditions and localized beach erosion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Inexperienced swimmers should remain out of the water due to dangerous surf conditions.
Direct Advisory Links:
Currently: None
The button below will be wobbling if there is a single advisory type. Click on the button and you will be taken to that page. If there are mutiple advisoies active, use the direct links above instead.
Click on this button if it is active (Wobbling)
Monday
Peterborough/Keene:
Monday Night
Peterborough/Keene:
Tuesday
Peterborough/Keene:
Tuesday Night
Peterborough/Keene:
Wednesday
Peterborough/Keene:
Wednesday Night
Peterborough/Keene:
Thursday
Peterborough/Keene:
Thursday Night
Peterborough/Keene:
Friday
Peterborough/Keene:
Friday Night
A chance of showers before 8pm, then patchy drizzle with a chance of showers after 8pm. Cloudy, with a low around 56. North wind around 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Peterborough/Keene:
A 30 percent chance of showers, mainly after 10pm. Patchy fog between 8pm and midnight. Otherwise, mostly cloudy, with a low around 54. Northeast wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 40 percent chance of showers. Cloudy, with a high near 63. Northeast wind 5 to 10 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Peterborough/Keene:
A 30 percent chance of showers, mainly before 11am. Cloudy, with a high near 62. Northeast wind around 5 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
A 20 percent chance of showers before 11pm. Mostly cloudy, with a low around 52. North wind around 5 mph.
Peterborough/Keene:
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 49. East wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 67. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Peterborough/Keene:
Mostly sunny, with a high near 63. East wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 46. North wind around 5 mph.
Peterborough/Keene:
Mostly clear, with a low around 43.
More weather information, local and around the world
New England Weather Discussion
(With thanks to the surrounding National Weather Service Offices)
Current Weather Readings:
(FYI: The number in parenthesis below is the change in the last hour)
-
Time of the readings below: 20 Sep 2024 8:59 PM
-
Current Temperature: 61.5°F (-0.1)
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High Temperature for today: 65.3 at 2:17 PM.
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Low Temperature for Today: 59.4 at 1:16 AM.
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Rainfall Today: 0.04 inches
-
Current Dewpoint Temperature: 59.2°F (-0.1)
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Hours of Daylight Tomorrow: 12:12
-
Highest Heat Index Reading Today: 65.3 at 2:17 PM
Last Complete Site Update: 9/20 - 6:08 PM
Rich`s Weather Discussion
After the morning light showers and fog, skies turned dark with a heavy overcast and temperatures were cool. I expect a chance of light showers to continue through Saturday.
A large band of precipitation over the Gulf of Maine will continue to attempt to retrograde westward as the moisture interacts with dry air over land. This attempt at the pivoting of precipitation remains in association with a nearly stationary surface low southeast of Cape Cod along with an upper level low stacked over the system. Most available guidance keeps much of the region dry, but also brings some measurable rainfall to the southwest coast of Maine and the Seacoast of New Hampshire. The latest Namnest solution brings over a quarter inch of precipitation to this region showing somewhat of a Norlun looking inverted trough overnight. Will monitor the development of this boundary this evening, however, considering how dry it has been, and dry level in place across the interior, this precipitation may be overforecast and in more agreement with other model solutions which keep limited precipitation over the region.
Along portions of the southwest coast of Maine and the Seacoast of New Hampshire, dangerous surf will continue with rip currents.
Elsewhere, mainly dry conditions can be expected outside an isolated shower. Patchy drizzle can be expected over southeast New Hampshire and southern Maine with patchy fog as well once again tonight.
Temperatures will be slightly cooler tonight, mainly in the upper 40s and 50s.
Any precipitation will be limited to far southern areas once again on Saturday. Low pressure will remain southeast of Nantucket before beginning its exit out to sea Saturday night. Drier air will then enter all areas at that time setting the stage with a sunny end to the weekend for all areas.
Highest temperatures will be over northern areas on Saturday where the most sunshine will occur, mainly in the 60s.
A backdoor high pressure system will enter the region from the Canadian Maritimes Saturday night. This will allow for temperatures to be a little cooler, mainly in the 40s to lower 50s.
Long Range Forecast:
Overview: Uncertain weather pattern evolving in the extended after the breakdown of a block. After upper low lifts out of the Gulf of ME...the blocky nature of the pattern will remain. Guidance attempts to set up another rex block but the location remains low confidence.
Impacts: Pretty wide range of potential impacts...from continued dry weather and increasing fire weather risk...to a more changeable pattern with rain chances.
Forecast Details: The higher confidence portion of the forecast this weekend will feature at least brief ridging as upper low departs the local waters and drifts east. Northeast flow should keep temps on the near normal side versus the mild weather of late. We will also have to keep an eye on lingering moisture and potential fog/stratus near the coast before westerly winds can sweep it away.
Beyond Monday a trough will approach from the west and that is where forecasts diverge. Some guidance favors the base of the trough cutting off and pinwheeling around for several days. Other guidance favors a more progressive trough. Some of this may be tied to potential tropical cyclone development in the Gulf of Mexico later in the period...and ridge building ahead of it. Examining clusters in the models...guidance is roughly split 50/50 between the two ideas...though the location of the cutoff will determine local sensible weather. As a result I will not stray too far from the multi-model consensus blend.
In general temps will gradually moderate thru the week. Rain shower chances will develop by midweek and may linger into the weekend.
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07/07/2024: Added Heat Index Temperature to the current readings above.
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Regional Synopsis
SYNOPSIS...
Low pressure south of Cape Cod meanders through tomorrow before slowly drifting southward by early next week. The low continues to bring cooler conditions, a few showers, and impacts along the coastline. High pressure builds in across New England by late this weekend and early next week, bringing seasonable temperatures and dry conditions.
SYNOPSIS...
Offshore low remains stagnant through Saturday and begins to move to the southeast Sunday and continue through Monday. While dry weather is expected Sunday through Tuesday, cloudier conditions and onshore breezes are expected, along with a risk for higher surf through Monday. Rain chances then increase again for midweek as a frontal system moves in from the Great Lakes. Near to slightly below normal temperatures are expected into midweek.
LONG TERM /SUNDAY THROUGH FRIDAY/...
Highlights:
* While dry, still a cloudier-than-not period with continued NE breezes thru Tue. High surf and/or elevated risk for rip currents as well thru at least early next week, and minor coastal flooding on east facing coasts again possible into Sun.
* Frontal system around Wed or Thurs offers the next chance for rains, although the timing is still uncertain.
* Temps near to slightly cooler than normal.
Live Weather Link
See the current readings from my weather instruments here in Peterborough, NH by clicking on the Weather Vane Below.
Weather History for Today
Patterns & Other Information
Weather Headlines
Autumn arrives on September 22, 2024, at 8:44 AM EDT
Unsettled to start. Dry much of the time.
Temperature Trend
Coastal Flooding into Saturday
Five Day Allergy Forecast for Southern New Hampshire
September Facts
Regional Weather Discussions
Updated once in the morning-These are provided by the NWS, WMUR-TV, or me...
Manchester, NH: Last update: 9/20 - 6:57 AM
The closer to the coast, the cooler and more clouds we'll see over the next few days. Showers are also more likely there, though they appear few and far between through early Saturday.
Everyone will experience cooler temperatures (60s) as we get into the weekend. Passing showers in southern areas today, then partly sunny skies in the afternoon. Highs will be warmer to the west where it will be brighter- 70s there, 60s everywhere else.
Clouds, fog and a few passing showers for southern areas later tonight. Lows will be in the 50s by morning.
Scattered showers may linger into early Saturday then clouds and some sun. Highs in the upper 60s. Sunday highs in the mid 60s with partial sun for the first day of autumn.
Picture of the week - New every Friday
MacDowell Dam - Peterborough, NH - Taken by me
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Current Boston Radar Loop - All Radars
Climate Information (Peterborough, NH)
This section is updated every morning.
Last Update: 9/20 - 6:58 AM
The current average temperature spread for this time of year:
High: 67 Degrees
Low: 45 Degrees
Record High: 1983: 87 Degrees
Record Low: 1964: 22 Degrees
Lake Winnipesaukee Water Temperature: 70 degrees
Ocean Water Temperature: 60 degrees
The Summits Forecast
THE FORECAST FOR MOUNT MONADNOCK, NH
Summits of Mount Monadnock and North Pack Monadnock Mountain
321 AM EDT Fri Sep 20 2024
...Recreation forecast for summits of Mount Monadnock and North Pack Monadnock mountain...
TODAY...Cloudy. A chance of showers this morning, then a slight chance of showers this afternoon. Highs around 60. Northeast winds up to 10 mph with gusts up to 20 mph. Chance of rain 30 percent.
TONIGHT...Mostly cloudy. A chance of showers after midnight. Lows in the lower 50s. Northeast winds up to 10 mph. Chance of rain 30 percent. SATURDAY...Cloudy. A chance of showers. Highs in the mid 50s. Northeast winds up to 10 mph with gusts up to 20 mph. Chance of rain 30 percent
The latest National Weather Map direct from the NWS.
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