September 14th, 2013 at 9:28 am by under Bill's Blog, Weather

glerl   This is a grab from the Muskegon GLERL camera at the Channel Saturday around 9 AM.  There were already a few boats out.   Saturday was  the brighter half of the weekend, with clouds and some scattered showers developing today (Sun.).   Monday and part of Tuesday should be mostly sunny and pleasant.  Look for warmer temps. (low 80s perhaps) Weds. and Thurs. with scattered showers and a possible thunderstorm.  More cool fall-like air will move in for next weekend.

Low temps. Sat. AM:  27 Spincich Lake (U.P.) and Leota (Clare Co.), 28 Baldwin, 30 Leslie, Houghton Lake, 31 Cadillac, Wellston (Manistee Co.), 32 Kalamazoo Nature Center, Pellston, 33 Reed City, 34 Alma, Manistee, 35 Big Rapids, 36 Hart, Hopkins, Belding, 37 Fremont, Coldwater, Mt. Pleasant, Benton Harbor, Sturgis, 38 Holland, Jackson, Marshall, Ludington, Hastings, Albion, 39 Muskegon, Lansing, S. Haven, Ionia, Three Rivers, Hudsonville, Fennville, 40 Kalamazoo (airport), East Grand Rapids, Allendale, 41 Grand Rapids (airport), Battle Creek.

Note the difference between the low temperatures at the Kalamazoo Nature Center (32) and the Kalamazoo Airport (40).  There can be a significant difference in low temperatures on a calm, clear night over a short distance.  If you were planting a frost-sensitive crop, you might locate your farm by the airport instead of the Nature Center to get a longer growing season.  It might affect how you would landscape your yard.   The location of the weather station affects the climate record.  It used to be that weather stations were in more rural areas.  Weather stations were moved to airports, because pilots needed weather data.  The State Climatologist of Michigan said that Michigan is about one degree warmer than it was 100 years ago, and that much of the difference was on clear, calm nights.  You can see why moving an official weather station from a location like the Nature Center to the Airport would account for much of that difference.  Also, the National Weather Service changed their temperature reporting from liquid in glass (mercury, alcohol) thermometers to MMTS.  Read about it here (article from the Past President of the American Assn. of State Climatologists).  The MMTS thermometers required electricity.  So, quite a few weather stations were moved near buildings, because that’s where the electricity was available.  That change can also result in warmer temperatures both in the daytime and at night.  On a calm, clear night, cool air will settle to the lowest spot, so valleys will get a little colder than hilltops.  That’s why orchards aren’t planted in river valleys, but are on higher land, where  the coolest air can drain away.  The apple orchards of Kent Co. are on “The Ridge” and that is even the name of roads in the area (Fruit Ridge Rd., Peach Ridge Rd.).  Enjoy your weekend!

ADD:  Before and after pics. of the Big Thompson River flooding in Colorado.

8 Responses to “Weekend”

  1. snowsearch says:

    Another sunny, crisp morning. Enjoy!

  2. SlimJim NW GR (1) says:

    Bill mentioned about the difference between the Kalamazoo Nature Center and the Kalamazoo airport. I go for a walk almost ever day and at different times of the day. And when I walk in the evening or early morning there are “cool” spots where you can really feel the difference in the temp and the spots are the same ever time. Also when I had 3 temperature sensors around the yard there was one location that was colder on clear nights then the other two. BTW I did change the sensors to see if one was just reading colder (it was not) but I am now down to just two sensors as one keeps draining the battery down real fast.
    I had a low of 40° here and now with lots of sun its up to 57°. It looks like the next week should have a few ups and downs and maybe a lot of rain.

  3. Mark (East Lansing) says:

    Beautiful day! Go Green!

    1. Brian(Grandville) says:


  4. Thank goodness!! Michigan played like CRAP!!! Ugly win!! a win is a win!! GO BLUE!!!!!!! The yard sure was frosty this AM!!!!

  5. Hey,I saw on the Sports news segment at Spartan Stadium, someone with a Airplane flew over Spartan Stadium with letter making white smoke!! It Said GO BLUE !!!!!! HILARIOUS!!!! LOL LOL!!!!

    1. Cliff(Scotts) says:

      What’s hilarious is how michigan played today. Way to represent the big ten blue!!!

  6. Resourceful Nana says:

    Just curious about how one determines if their thermometer is accurate. I totally understand how different zones in communities and around hills can vary and how the exterior of the south side of buildings will be warmer than the north side. But I sure would like to know more about where that thermometer is at the Kalamazoo Nature Center! An eight degree temperature difference in Kalamazoo this morning seems huge.

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