Did Minnesota experience a derecho during Monday night's storms?

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00:00Well, we recap last night's storms, who had a deratio, who maybe didn't, and a look at the

00:05much more comfortable weather moving in for the rest of the week.

00:17A lot of wind damage reports across southern Minnesota, Twin Cities included, and then a

00:23really destructive path from southeastern South Dakota through Iowa into Illinois, and we'll

00:28break down the two different paths. These merge into one system, but two separate storm systems

00:34initially creating those wind gusts. Highest wind gusts in Minnesota, 76 miles an hour in

00:38Stewartville, southeastern Minnesota, Kassan and Dodge County, 74 miles an hour, Owatonna,

00:4370 miles an hour, but even the Twin Cities, 65 miles an hour in Shakopee, the MSP Airport

00:47had a 60 mile an hour gust, but Sioux Center, Iowa, 99 miles an hour, and that system continued

00:54to produce 80 to 99 mile per hour wind gusts. So here's a look at what happened. We had

00:59two clusters, one that developed in southeastern South Dakota, one that developed in northeastern

01:03South Dakota. That northern cluster came through the Twin Cities in southeastern Minnesota, but

01:07that southern cluster moved across mostly northern Iowa, and that's the one that probably will

01:12go down as an official deratio just because of the path length. So you can see wind gusts

01:18over the last 24 hours kind of laying it out, that northern line that came through the Twin

01:22Cities, about 175 mile an hour long path of destructive winds. But across Iowa, that was

01:28about a 400 mile long path. So that would qualify as a deratio. It's got to be about 240 miles

01:34an hour or longer. The Minnesota side, though, not quite long enough and not quite severe enough

01:39probably for most of that path either. But we had a lot of rainfall too. West central Minnesota,

01:44when you add up the last few days, Chicago in west central Minnesota, eight inches of rain.

01:51Yeah, they had just over six inches Sunday night. They got another two inches yesterday. So a lot of rainfall

01:57for some of us. Mid to upper 80s still today, still muggy in southern Minnesota. We will see that

02:02more comfortable air eventually. But far southern Minnesota has more moisture to deal with. See these

02:06little X's? Those are more short waves aloft. Pools of cool air instability, upper level

02:11disturbances headed our way, or at least headed for southern Minnesota, over the next 12 hours or so.

02:16So a couple of lingering showers earlier this morning. But this next disturbance is going to

02:20work its way up into southern Minnesota and create more showers and thunderstorms tonight

02:24for those southernmost counties of the state. So here's 11 p.m. more thunderstorms, even a marginal

02:29severe risk for that southwestern corner of the state. And then maybe even clipping the metro with a few

02:34showers late tonight into early tomorrow. Most of it should stay just south of the Twin Cities. But

02:38we're talking another one to two inches of rain here along I-90 potentially. But yeah,

02:42south metro of the Twin Cities probably will be the northernmost extent of a few showers tonight into

02:47early tomorrow, generally south of that. We also have an air quality alert again. That northerly flow of

02:55air moving back in that'll drop the humidity also brings back that Canadian wildfire smoke. So central and

03:00northern Minnesota air quality alert through 11 p.m. tomorrow. Sensors are starting to turn orange to

03:05the north, which is unhealthy for sensitive groups. But you can see really bad air quality just on the other

03:09side of the border. And that's the air that'll be slowly drifting in here over the next 24 to 36

03:14hours. But drier dew points also. Still muggy today, though. Sixties to near 70 degree dew points

03:20in southern Minnesota. Fifties to the north. But that drier area is coming. By tomorrow, you'll notice

03:24the difference. Dew points in the fifties, even forties for northern Minnesota, especially Thursday,

03:28Friday. Could see some quite dry September-like air. And cooler tomorrow, too. Mostly seventies for highs to

03:34maybe near 80 in the Twin Cities. And that's where we're going to stay right through the weekend. So

03:38comfortable. A couple degrees below normal. We go from the last two days, which were hot, well above normal

03:43temperatures for the central and eastern U.S. to the next five days, we're looking at actually below normal

03:49temperatures in the central part of the continent, just by a few degrees. Upper seventies, low humidity,

03:55kind of ideal weather. Nice break from that hot, steamy air that we've had for the last few days.

04:01Eighty-five today. Could even slip into the upper eighties. It's still going to be warm and still muggy,

04:06just not as humid as the last few days. We'll see those showers mostly to the south tonight and

04:12to tomorrow. But don't be shocked if you're in the south metro and you have a sprinkle tonight or maybe

04:16a brief shower tomorrow morning. But sunny skies, high pressure moves in with that more comfortable

04:21air Thursday, Friday, Saturday. Next chance of maybe some isolated thunder Sunday. Looks like maybe

04:26the better chance could be Monday. Not looking like a big deal right now. Temperatures will still be

04:31not too bad. And we won't see that real muggy air yet. So probably not a whole lot of severe weather

04:36with those chances coming in for early next week.

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