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: 30 Jan 2025 6:37 PM

• Current Temperature: 19.9°F (0.1)

• High Temperature for today: 22.8 at 3:00 PM.

• Low Temperature for Today: 12.1 at 2:46 AM.

• Rainfall Today: 0.00 inches

• Current Dewpoint Temperature: 6.4°F (0.9)

• Hours of Daylight Tomorrow: 9:55

• Lowest Windchill Reading Today: 6.1 at 9:42 AM 

  Find ALL of my instrument readings here

  Last Complete Site Update: 1/30 - 6:02 PM

  

  The Spring Outlook will be available sometime in the weeks ahead.

  Rich`s Weather Discussion

  It was quite chilly today and that cold air tonight will slowly start to warm towards daybreak Friday.
  On the heels of a very cold air mass a low pressure system will pass to our south on Friday. To the north of the track an area of light precipitation is forecast to move through the region. Most of this should fall as snow with light accumulations, but some light freezing rain or rain may be possible across parts of southern New Hampshire. Temperatures will then begin to yo-yo as another cold high pressure descends on the area.
  There is a Hazardous Weather Outlook for southern NH and a Winter Weather Advisory active for NE NY State. Snowfall estimates are alos available.
  Find them in the Advisory Section.
  
  On this day in 1965, Sir Winston Churchill was laid to rest at St. Martin's Church. The funeral was attended by representatives from 120 countries, including 6,000 people, and witnessed by over 350 million viewers. It was the largest state funeral in British history.
  
  

  **NEAR TERM UNTIL 6 AM FRIDAY MORNING**
  
  A weak clipper system will move quickly north of the forecast area overnight, bringing light snow or snow showers from the mountains to central Maine. Expected precipitation amounts are low, and the system will move through quickly, so impacts will be minimal. A dusting of snow is expected from northern New Hampshire to the Kennebec Valley region, with slightly higher amounts possible in elevated areas along the Quebec border.
  
  Temperatures will drop after sunset and through the mid-evening but may reach their lowest point early. Lows will range from the teens to around 20 degrees along the coast and inland areas, with single digits in the mountains. Winds will shift to the southwest overnight, causing temperatures to level out and then rise slightly. Increasing cloud cover will lead to overcast skies by Friday morning.
  
  **SHORT TERM 6 AM FRIDAY MORNING THROUGH FRIDAY NIGHT**
  
  Another round of precipitation will move into New Hampshire and Maine on Friday, but there is still uncertainty regarding amounts and precipitation types.
  
  **Potential Impacts:**
  
  - Snow accumulations will begin late Friday afternoon and evening, first across central and southern New Hampshire, then southern Maine. Many areas will receive one to three inches of snow, with the higher end of that range likely in central New Hampshire and the Lakes Region of southern Maine. The highest snowfall rates are expected shortly after the afternoon commute in southern and central New Hampshire.
  
  - A brief period of light freezing rain is possible Friday afternoon from the foothills of New Hampshire into the Lakes Region of Maine, transitioning to snow later in the afternoon and evening. Confidence in this scenario is low and depends on cold pavement temperatures and whether precipitation starts as light rain in the afternoon.
  
  **Details:**
  
  Although forecast models are starting to align on the system moving in Friday afternoon and evening, uncertainty remains. The most certain part of the forecast is that Friday will start dry, with increasing chances for precipitation in the afternoon and evening.
  
  For the northern edge of measurable precipitation, dry air in place combined with strong westerly winds in the mid-to-upper atmosphere will slow the northward spread of moisture. The amount of moisture moving northward is limited, which can be seen in the variation of humidity levels in the atmosphere. Forecast models show a significant difference in humidity at about ten thousand feet between New Hampshire and southern Maine, which impacts precipitation amounts and timing.
  
  The forecast takes a conservative approach on precipitation amounts, especially for northern and central Maine, as well as the expected warming at the surface Friday afternoon. The highest precipitation amounts will likely be in southern and central New Hampshire and far southern Maine, where snow will be the primary precipitation type. Snow ratios may be lower in southern New Hampshire due to a slightly warmer atmosphere, and some rain may mix in briefly during the early afternoon in southern New Hampshire and coastal Maine. However, if upward motion strengthens and localized heavier snowfall bands form, amounts could increase. Most of the region should switch back to all snow by evening, with snowfall becoming lighter overnight.
  
  Regarding the chance of light freezing rain Friday, it is a low-probability but notable possibility given recent cold conditions. As the system moves in, some isolated light showers may develop ahead of the main precipitation band. Some models suggest a shallow warm layer near the surface that could melt snowflakes before they reach the ground. If this occurs, the melted precipitation could refreeze on surfaces that have remained below freezing for several days. However, this warm layer is dry and may cool quickly once heavier precipitation begins, reducing the chance of freezing rain.
  
  **LONG TERM SATURDAY THROUGH THURSDAY**
  
  **Key Message:** Temperatures will fluctuate between above and below normal over the next several days, with multiple chances for precipitation.
  
  **Impacts:** The primary hazard will be wintry precipitation. With warmer air nearby, precipitation may not be all snow. Some areas may see freezing rain or sleet in addition to accumulating snow.
  
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  Forcaster`s Discussion
  

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  Regional Synopsis

  New Hampshire and Maine

  SYNOPSIS...
  On the heels of a very cold air mass a low pressure system will pass to our south on Friday. To the north of the track an area of light precipitation is forecast to move through the region. Most of this should fall as snow with light accumulations, but some light freezing rain or rain may be possible across parts of southern New Hampshire. Temperatures will then begin to yo-yo as another cold high pressure descends on the area. Then another warm front will lift towards the area Sunday night into Monday with another round of light precipitation. Once again snow and a mix is possible.
  

  Massachusetts

  SYNOPSIS...
  A frontal system Friday into Friday night spreads rain for most of Southern New England, although some mixed wintry precipitation is expected for areas north of the Massachusetts Turnpike. Drying out for the weekend. A quick moving clipper system may bring minor snow accumulations to northern MA Sunday night into Monday while areas south will more likely get a light rain/snow mix or rain. Temperatures trend more seasonable through mid-week.
  
  SHORT TERM /6 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/...
  
  Key messages...
  
  * Rain moves in late morning/early afternoon, flipping to snow 7-10pm.
  
  LONG TERM /SATURDAY THROUGH THURSDAY/...
  
  Key Messages:
  
  * Cool and dry for the weekend.
  
  * Quick clipper system moves through Sunday night - Monday light snow mainly in northern MA.
  
  * Dry with seasonable temperatures Tuesday.
  

See the current readings from my weather instruments here in Peterborough, NH by clicking on the Weather Vane Below.

Weather History for Today