Metro Detroit weather forecast: Stormy pattern setting up

Not good news for NASCAR fans this weekend at M.I.S.

DETROIT – I know that a lot of you (myself included) are not happy with the very wet start to our summer season, but you'd better get used to it.

It's entirely possible that we'll have only one or two dry days in the next week-and-a-half. If you need to get the lawn cut, I suggest you do it either tomorrow or Thursday, because we get into a very stormy pattern after that.

As for you NASCAR fans heading to Michigan International Speedway this weekend, I strongly recommend that you download our FREE Local4Casters weather app from the app store (just search under WDIV). It has a great radar display on a map that you can easily zoom in or out, so you can watch the weather as it approaches from the west and plan accordingly.

Tonight will be mostly dry, but a scattered shower or thunderstorm is possible later at night. Lows in the low to mid 60s (17° Celsius for you Canadians). Wind becoming south-southwest at 3 to 7 mph.

Aside from a scattered shower or thunderstorm first thing Wednesday morning (my gut feeling is that coverage will be very sparse), I think the bulk of the daylight hours will be dry. It'll become very windy and very warm, with highs in the mid to upper 80s (30° Celsius), and a southwest wind at 20 to 25 mph. A cold front crossing the area toward evening MIGHT produce some scattered thunderstorms, but this afternoon's computer models suggest that the storms won't fire up until the front is just south of the state line. If that materializes, then most of us stay dry the rest of the day, with only those of you in southern Lenawee and Monroe Counties having the chance for a late afternoon or early evening thunderstorm. Obviously, if the front slows a bit, then that thunderstorm chance increases proportionally northward.

IMPORTANT: If the storms develop in our area and exist long enough before moving into Ohio, then severe storms would be possible. There is a razor thin margin of error on this -- pretty close to an "all or nothing" scenario -- but, again, the models suggest that this activity should stay mostly south of the border.

Wednesday's sunrise is at 5:57 AM, and Wednesday's sunset is at 9:09 PM.

Mostly clear Wednesday night, with lows near 60°.

Partly cloudy and pleasant on Thursday, with highs in the low 80s, and wind should be light. As I mentioned above, if you have some outdoor yard work that you have to get done, I strongly suggest trying to do it Thursday, because things really go downhill after that.

Rain develops after midnight Thursday night. Lows in the low to mid 60s.

Showers and thunderstorms will develop on Friday, with highs in the upper 70s.

Showers and thunderstorms continue Friday night, with lows in the mid 60s. Something to monitor is that we could see yet another batch of heavy rainfall amounts late Friday into Saturday morning.

We'll probably start our day on Saturday with some lingering showers but, right now, I think the rain will taper off by afternoon. Highs in the upper 70s.

Hopefully we get a break from the rain Saturday night, with lows in the mid 60s.

Sunday is a tricky one but, even if we manage to start the day dry, it appears that showers and possibly a stray thunderstorm could develop sometime during the afternoon. Highs near 80°.

There's still a chance of showers and thunderstorms Sunday night, with lows in the upper 60s.

More batches of showers and thunderstorms are possible Monday through Wednesday, although highs should warm into the mid 80s.

Finally, I'll be off the next three days attending the American Meteorological Society's annual conference for broadcast meteorologists. For those of you who follow me on Twitter (@PGLocal4 and @Local4Casters), I won't have the ability to tweet as often as normal, but I will stay on top of things and update you whenever I can.


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