Early Week Rumblings (July 8, 2013)

A weakening cold front will bring rain and embedded thunderstorms today. Near time of posting, the swath of rain was fairly impressive and is sure to bring a relief to a recent slowdown in rain amounts. Nothing like a nice rainy day now and then. Some storms do seem to be popping up ahead and in the complex. These should be brief with a few rumbles of thunder here and there.

Swath of showers and thunderstorms will move through Michigan this afternoon and early evening.

Swath of showers and thunderstorms will move through Michigan this afternoon and early evening.

Meanwhile, a stronger front with much cooler air will develop in the Midwest and track eastward on Tuesday. With this stronger front come stronger thunderstorm parameters. The usual players will be there. Lift will be provided by the cold front, moisture is already in place with high dew-points into the 60-70 range, and the atmosphere will have instability as CAPE values approach 3000 J/KG. Additional parameters to look at include wind shear; which is how the wind changes(speed/direction/both) from the Earth’s surface to 6 or so kilometers in the atmosphere, and occasionally the LI or Lifted Index(another indicator of instability); comparing a theoretical air parcel’s temperature to the environment temperature surrounding it.

The Storm Prediction Center is calling for a few solutions to this event, mainly around a few Mesoscale Convective Systems. These will birth in the Midwest and track eastward with the front. Main threat will be some strong winds and large hail with these systems. Tornadoes can be a threat as well, generally during initial discrete development, but not limited to.

Temperatures will be in the mid to upper 80s through Wednesday. Once these fronts pass early week, Thursday and Friday will be cooler before temperatures rebound into the 80s for the weekend.

Stay tuned to the Facebook page for tiny updates and cool weather stuff from the social media world.

Thanks for the read, feel free to comment/ask questions!

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About gweatherc
Live in Michigan and enjoy observing the weather. Want to pursue it as a career! Currently taking classes at Central Michigan University.

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