Hot Tuesday – Monday Rain

September 9th, 2013 at 11:48 pm by under Bill's Blog, Weather

storm total rainfall  high temps Update:  Very warm night last night.  The S. Haven ASOS weather station had a low temperature of 79 last night.  Only Galveston TX, Boothville LA and Palm Beach Florida were warmer than that.  Holland’s Regional Airport stopped at 78 and G.R. had a low of 76.  Bright blue sky here in Chicago (Wilmette), not the soupy haze you can get on a hot, summer day.  We’re headed to Lake Geneva WI to take the boat ride around the lake.  This is storm total rainfall for Monday AM (from GRR NEWS radar and Plymouth St.).  The image on the right is high temperatures from Monday (from SUNY Albany difax page).  Click on the images to enlarge.  A rush-hour deluge across parts of the viewing area with next to nothing in other parts.  Here’s rainfall totals, including 5.63″ three miles SSW of Wyoming, 5.35″ Litchfield (NW Hillsdale Co.), 4.3″ in Caledonia, 3.76″ five miles ENE of Hudsonville, 3.16″ in Allendale, 2.44″ near hard, 2.5″ at Bellevue.  Officially, G.R. had 0.76″ (airport), 1.08 Kalamazoo, 0.99″ Battle Creek, 0.69″ Muskegon, 0.49″ Lansing and just 0.02″ in Holland.  Some street flooding was reported.   Warm weather covered most of the Lower 48 States with temperatures as high as 101 in Des Moines and 100 in Burlington IA and Quincy IL.  That was a whole lot warmer than high of 84 in Phoenix AZ.   Today will be the last day that gets this hot across much of the Great Lakes.   BTW, the 5.63″ of rain might have been the heaviest rain anywhere in the world on 9/9.  I don’t have time to check that.  Most of that came in 2 hours.  From GRR NWS – a better map of rainfall.

15 Responses to “Hot Tuesday – Monday Rain”

  1. Cort S. says:

    For any given location near Grand Rapids (e.g. your house), receiving 5.5 inches of rain in 3 hours has an average recurrence interval of 500 years!

    1. Skot says:

      Just how is that calculated using records that only go back 1 20 yrs?

      1. Cort S. says:


        Or magic.

        But probably statistics. By people who are way smarter than me at that kind of stuff.

        1. Skot says:

          120 vs 500…hmmm no s— statistics.

        2. Cort S. says:


          Even if we had records of 500 years, it still would take a fair amount of statistics (hypothesis testing and p-values, etc.) to figure out what actually is a 500-year rain event. I don’t think we could just look at the most-intense rain events of the record and label them as 500-year events. 500-year events have an average return frequency of 500 years, but you can have multiple 500-year events in any given 500 year period, or none at all. You may also have received a 1000-year event within the 500-year record period.

        3. Mark (East Lansing) says:

          I’m mad at numbers…

  2. TomKap (Michigan St. & Fuller) Grand Rapids says:

    That’s a crazy amount of rain.
    Small amount here – enough to make the weeds grow one more time.

  3. Travis (Oakland County) says:

    Heat Advisories up for SE Michigan.

    Chance at hottest day of the year for parts of Michigan with many daily records likely surpassed.

    1. Mark (East Lansing) says:

      59 Friday and 64 for Saturday for Detroit, as per NWS. Kinda averages everything out.

      1. yooper4021 says:

        Wait for it….wait for it…

        “NWS forecast is garbage….WXYZ has 63, 67, and 69 for Friday, Saturday, Sunday.”

  4. Dan says:

    I’m not sure if GR breaks the record. I believe I heard Kyle say that 94 is GR high temp record for this time of year. He did say we would probably have the warmest low. I think that occurred last night. Low of 79? I would love to have that temp as a high in November!

  5. Dan says:

    Yes, we had a large amount of rain. It was over 3 inches! Sump pump was going crazy. I hope it hangs in there!

  6. Looks like I was right over the read blob for 5″. Don’t need anymore rain anymore for a while!

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