Friday PM

May 4th, 2012 at 12:02 pm by under Bill's Blog, Weather

    They tested the sirens now at noon in Kent County (first Friday of the month).  Three interesting pictures here from from ReportIt. the storms Thursday PM (5/3).  The first is (finishing thread later…Matt is on TV).   First, a picture of a hail-producing thunderstorm from Greg.  You can see the fuzzy, pileus cloud.  Click here to enlarge.  The second picture of a chaotic sky in Muskegon is from Jim.  Click here to enlarge.  The third picture from Brian is a shelf cloud associated with a thunderstorm.  Click here to enlarge.  Here’s storm reports from Thursday for W. Michigan, N. Michigan, E. Michigan (5.48″ of rain in Flint!) and N. Indiana (inc. the Michigan counties that border Indiana).   We are not in the Severe Weather Outlook Areas for the next several days.  There’s still a fair amount of cloud cover over the area early this PM, but clouds will thin late today and early tonight.  The last of the showers are clearing SE Michigan.  Saturday looks dry.  There could be patchy fog later tonight and early Saturday.

29 Responses to “Friday PM”

  1. Yup (Grandville) says:

    That looks like a legitimate “Morning Glory” cloud….. No way!

    1. Cort S. says:

      Definitely a shelf-like cloud caused by the gust front of the thunderstorm outflow. But in that picture it seems like the cloud is completely detached from the thunderstorm. Looks like more of a roll cloud to me.

  2. Me :-) says:

    The second picture is awesome. They should make a jigsaw puzzle out of that picture. I bet even my wife would have problems putting it back together. :-)
    Thank you for sharing the pictures, Bill!

    1. Jeff B. (Gowen) says:

      LMBO! I was thinking exacetly the same thing when I saw it. It sure would be a challenge.

  3. Pat says:

    The rain hasn’t left as it is pouring rain in Sparta right now at 2PM.

  4. fixxxerswrist says:

    ho hum. wake me up when there is sun. more clouds and i am seeing a cool month, it looks like the bubble will eat up all the storms again too.

    1. fixxxers elixxxer says:

      Hey Cuz… I totally agree.

  5. Travis (Oxford, MI) says:

    I had 5 or 6 separate storms roll through last night. Loud too. It was a great 12 hours!

    Flint had some major flooding this morning. 4-5″ of rain I heard.

  6. Steelie says:

    Good Day,

    Near Breton and 52nd… I have been watching the clouds build to my South and East. Skies are getting darker that way too…


  7. Barbara Egeler-Bailey says:

    Hardly anything from this whole system in SE GR–maybe a few tenths.

  8. Dan says:

    We are just south of GR. I bet we received over an inch of rain. It came down heavy for quite awhile last night and early this am! Hail and brilliant lightning accompanied the rain!
    Anybody know if we will stay dry in the am on Saturday?

  9. Brian(Grandville) says:

    There’s an incredible bow echo out in Iowa right now.
    I’m not to sure how to post a link though. Suggestions would be helpful.

    1. Cort S. says:

      I’ll cover it for you.
      Just gotta copy the web address of your favorite radar website and paste it here.

      1. Brian(Grandville) says:

        Thanx for the tip Cort.

  10. michael g (SE GR) says:

    Hey Bill, (or anyone else who might know) my sister’s smoke alarms went off for no apparent reason at 1:30 this morning. There was distant lightning at the time, but nothing close by. She wondered if it was lightning related. After reading about how smoke detectors work, I don’t see how it would be, but I thought you might have a more definitive answer.

    1. Brian(Grandville) says:

      If they are programed into a security system it may just have been an equipment test, if not I don’t know.

    2. fixxxerswrist says:

      just got warm in here thought it was lightning but master just turned up the heat,still waiting for 90s, 100s but all i see is cold air out west and maybe 50s coming here, BLAH

    3. Cort S. says:

      Assuming it’s spider-proof and all the other normal reasons have been dismissed, I’ve got a theory. But first a story.

      Last spring in Holland, it was a cool, rainy, and humid morning. But later in the morning clouds cleared, the sun came out strongly, temperatures rose rapidly and it became even more humid (dewpoints had risen since earlier). Over the course of a few peculiar hours, Holland Fire Dept responded to numerous fire alarms going off in houses for no reason.

      Theory: condensation (fogging up) on the alarm sensor.

      My guess is that after a cool and rainy morning, people in Holland opened up their windows to let the warm air in. But the higher-dewpoint air from outside came in contact with the still-cool smoke detector sensor. When the dewpoint of the air is higher than the temperature of the sensor, boom… it fogs up and the alarm trips.

      I’m guessing your sister’s alarm went off last night because the process happened in reverse. She might have had high-dewpoint air in her house from earlier in the day, then the temperature inside her house cooled down at night. If she had all her windows closed overnight and wasn’t bringing in lower-dewpoint air from outside, it’s possible that the smoke detector sensor cooled off down to the air’s dewpoint temperature, and it fogged up. But I’m not sure… seems like this process might not as easily trip an alarm as the process which occurred in Holland. Dewpoints in GR (does your sis live in GR?) yesterday were in the mid-60s, so she would have had to trap that humid air in her house, then cool down her house (and the smoke alarm sensor) without air conditioning to the mid-60s by 1:30. Hey, maybe she boiled spaghetti before bed. I dunno…

      Better idea… if she had her windows open… depending on how exactly all the thunderstorm outflow boundaries set up and battled against warm return flow, her house might have caught the cool outflow from a thunderstorm for a while. The air temperatures could have been in the mid-60s and dewpoints in the low-60s. Then if the thunderstorm-cooled air was swept away and replaced with warm environmental air, that air could have had temperatures in the upper-60s and dewpoints in the mid-60s. I’m basing these numbers off of the measurements taken at GRR airport last night. Seems like a somewhat plausible explanation.

    4. Kimoeagle says:

      If the alarms use household power with battery backup, it could have been a power surge, or a surge down a comm. line (like a phone line, for instance). Our smoke alarms are battery, period, but some – as Brian alluded to – tie in to ABT or Brink, etc., and are usually powered with a battery backup. —Just a thought.

    5. michael g (SE GR) says:

      Seem like some logical guesses. I’ll pass them along. Thanks!

  11. Randy M (Comstock Park says:

    Well, I hope the weather or something keeps everyone occupied, because there won’t be an International Space Station flyover for 2 weeks!

  12. Kimoeagle says:

    WHOA! One heck of a bow front coming across northern Iowa right now!! Keep your eyes on it, please!

    1. Kimoeagle says:

      The Decorah (bald)Eagle family is hunkered down right now, with Mom & Dad watching over their three eaglets….. it’s a bit soggy there right now.

    2. Swatz_Zoo(Cedar Springs) says:

      There is nothing forecasted for storms tonight or this weekend so I don’t think we’ll see them or anything left overs from it unless it’s one of those surprise storms, it’s happened before.

    3. Kimoeagle says:

      This storm has been interesting to watch. Right now the LaCrosse NWS radar is showing a clear CCW motion (almost like someone is watching a mini-hurricane.) Meanwhile the aforementioned bow is still there to the SW, but that front had straightened out and doesn’t appear as strong.

  13. Skot says:

    Loved watching them last year.

  14. Shmana says:

    Bill? Where the hell did you get that suit?

  15. Jeff says:

    Here’s a nice close up photo of the storm clouds viewed near Zeeland, Mi:
    and the afterglow of the sunset:

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