Return of humidity will bring storms and heavy rain to Minnesota

Bring Me The News

Watch Return of humidity will bring storms and heavy rain to Minnesota - Bring Me The News on Dailymotion

Transcript

00:00Well, air quality is improving through the day today, and we're going to see humidity move in

00:04back to a steamy air mass, warmer air mass, and that means thunderstorms with the potential for

00:08heavy rainfall. So air quality, not too bad, mostly in the moderate yellow. There are some

00:24pockets of orange up around Duluth, which is unhealthy for sensitive groups, but largely

00:28this latest round of smoke kind of dispersed more through the atmosphere rather than confined to the

00:33surface. So we'll continue to see that surface level smoke, kind of a narrow band of it, disperse

00:38across the state. Southerly winds really get kicking in today, and that's going to help to really kind

00:43of push out that smoke for the time being. So while it will be warmer and more humid the next few days,

00:47that also means no smoke pushed to the north. So that's the good news. Dew points will increase

00:53tomorrow. You'll notice at 60s to near 70 degree dew points, and by the time we head into Friday and

00:56the weekend, those dew points are going to be pretty soupy, tropical again in the low 70s.

01:01Plenty of moisture for thunderstorms to work with. But we are in this late summer pattern where

01:06we're dependent on all these little upper level disturbances combined with those low level jet

01:11streams that get going at night above the ground, because during the day, we're basically capped

01:16because late in the summer, there's a lot of hot air blowing off the southwest. That hits us at about

01:2110,000, 15,000 feet above the ground. The cap Friday will be across southern Minnesota,

01:25extending into the central and southern plains. Same thing on Saturday. So storm chances during

01:30the day will happen mainly north of that cap, but it's the overnight hours that we're able to get

01:35break through that layer with these low level jet stream winds. Four to five thousand feet above the

01:41ground. They really roar at night, anywhere from 40 to 60 miles an hour. It's a conveyor belt of

01:46moisture and heat, and that spawns those late night, early morning storms. Morning clouds and

01:52showers kind of left over. We're seeing some of that already. These are two disturbances we're

01:56watching in the upper levels. These are pockets of cool air loft, basically upper level cool fronts,

02:00you can think of them as. And they are able to kind of break through some of that mid-level warm air

02:06combining with these overnight low level jet streams. So we're going to see some showers tonight

02:10into mainly the eastern Dakotas, western Minnesota. How much of that drips east tomorrow is a question mark.

02:15This seems a little aggressive, the high resolution rapid refresh model, but some spotty showers

02:20probably tomorrow, maybe late morning, midday, more clouds around. That means probably cooler

02:24temperatures. But then the best chances come overnight here. Friday night, and then again

02:29Saturday night, and then probably Sunday night too. And each of these rounds of late night storms

02:34could produce some pretty heavy rainfall. So where this all sets up is going to be a really critical

02:38factor. Timing these things out and placing them past 36 hours is really difficult. But this is the

02:44European model as an example. It is painting two to four inches of rainfall through Monday across

02:49central, east central Minnesota into western Wisconsin. We're going to have to watch for

02:52a heavy rainfall potential. That looks to be more the issue for us than severe storms. There is a

02:58slight risk for severe weather in northwestern Minnesota tomorrow into tomorrow night. But I think

03:02we're really going to be looking at the potential for more heavy rainfall versus severe threat.

03:0783 today though, still pleasant. Dew points in the 50s, but tomorrow it will be stickier,

03:11especially by later in the day. And we could have some of those spotty showers or a thunderstorm

03:15in the morning midday. That might knock those temperatures down a bit. So 83 might be a bit

03:20optimistic tomorrow if those showers drift further east. But Friday and Saturday look pretty steamy

03:24during the day. Again, the possibility of some early morning showers or clouds, but the better chances

03:29come in the overnight hours and early morning hours. Upper 80s, it will feel like it's in the 90s

03:34though, with those dew points in the low 70s, Friday and Saturday. And then heading into early next

03:39week, it remains unsettled right through Sunday, Monday. So that's why over the course of several

03:43days, those rainfall totals could add up here. So tropical air and tropical rainfall headed back

03:49into the region.

Category

Transcript

Be the first to comment

Recommended