Today's (and Yesterday's) Weather at Sutton Mills, NH 4/19 05:43

Temperature 39.9°F       Frostpoint N/A °F       Dewpoint 38.9°F	Barometer 30.173 in Hg & Steady

Wind --- at 0 mph       Wind Chill 40°F	Recent rainfall (melted snow?) 0.00 in       Current rate 0.00 in/hour       Storm total 0.07 in

PM2.5 Air Quality Index 10	VOC Bosch Static IAQ 119

Notes:

• The first four plots above are familiar weather data recorded by a Davis Vantage Pro 2 weather station. The last two plots are a couple of indexes from a new PurpleAir Zen air quality monitor. Index values below 100 are okay, above can get the EPA bent out of shape.

  One displays an index for "PM2.5" which includes small particulate matter like wood smoke. Sutton Mills is at the base of a hill and in a small river valley. This is an ideal location for nighttime air inversions and the graphs will show high PM2.5 values thanks to the wood stoves in the village.

  The other plot displays an experimental volatile organic chemical (VOC) measurement. I see some sensors elsewhere with huge VOC values, e.g. one tagged "Brew Shed Pizza" may be a clue.

• I like displaying 48 hours of past data. This lets us compare today with yesterday.

• During subfreezing conditions, the rain information is bogus because I don't have a heated tipping bucket. I'm a member of CoCoRaHS, and post data from the more accurate gauge members use. There are two other observers from Sutton, it's interesting seeing how different our data can be due to small storms like thunderstorms.

Other presentations. However, one never got beyond the startup stage, and the second just plain doesn't work and won't for a while. Sorry!:

• Historical data and other whatnot,
  currently just plots of High/Low temperatures during recent months.

• Historical data from an interactive form.
  My weather data lives in a database. This tool lets you say what you want to look at and then gives it to you graphically.

Originally I had to run Davis's WeatherLink while I was working on a Linux interface and working on getting away from Windows altogether. The graphs in the Linux presentation are now in pretty good shape I think are better than what I can play with from WeatherLink. In particular, I can put multiple variables on a single graph, very useful for things like air temperature and dew point. I've also forced some vertical scales to meet minimums, so you can glance at the barometer graph and tell if the barometer is low or high. The vertical scale runs from 29.40" to 30.60" instead of WeatherLink's stretch to fit graph.

Other of my weather-related pages you might want to check are:

• Snow Depth Days: definition and multi-season New England summary and Snow Depth Days in Sutton Mills for 2020-2021.

• The Blizzard of '78 in Marlboro, MA: My account, written 20 years later. And The Blizzard of '78 Addendum, a collection of related storm stuff that needs a home.
• 1816: The Year without a Summer: My summaries, one more technical than the other, of a weather event that helped change New England history.
• 2016: The [Next] Year without a Summer: My critique of the movie The Day after Tomorrow and notes on the real science about the risk of abrupt climate change.
• The Equation of Time is the difference between sundial time and clock time. Why don't these tell the same time, anyway?
• Technical stuff about my weather station: The software that produces this page, notes on using and calibrating the Vantage Pro station, and notes on the protocol and specification the software implements.

Non-weather local links: Sutton New Hampshire has three small villages, North Sutton, South Sutton (both have post offices and ZIP codes!) and Sutton Mills which is the town center and has town hall, the library, but neither post office nor Dunkin Donuts. Sutton Mills is named for the several water powered mills along our Lane River. All but one were destroyed in the All New England Flood of 1936, a catastrophe that the town still hasn't recovered from. Hannah Dustin was from Penacook, I need a local personality. There are several! My home page. Nearby Geocaches.

Text last updated 2023 Dec 10