Update: First Storms of the Season

Update Sunday PM:
The post mortem on Friday's storms shows that we did indeed have thunderstorms racing through the area.  I was predicting them moving at speeds of 40-50 mph, while in reality some were clocked at 60-70 mph.  In addition, I was thinking damaging winds would be the main threats in our area with maybe some hail.  The result here was indeed focused on damaging winds that reached 70 mph in Medford and caused downed trees there and perhaps in a couple other of spots in the region.  More so, there was some hail that got up to .50" in size, but that was very limited.  Otherwise, garden variety type storms in North Central Wisconsin generally.

Meantime, Marquette and Green Lake Counties were the targets for the first 3 tornado touchdowns of the season.  The storms streaked through between 7-7:15pm on Friday, with 2 EF0 twisters and 1 EF1 tornado.  The strongest tornadic storm was just to the southeast of Berlin in Green Lake County, which caused damaged to some structures in that area, but fortunately with all the tornadoes, no injuries or deaths were reported.  If you were watching us on 24/7 Weather Friday evening as that storm was rolling through, we were monitoring far SE Waushara County to be impacted.  Fortunately, the worst of the storms stayed just to the south, but not by much.  For more on the tornadoes, check out the NWS Milwaukee Summary.

More unsettled weather is anticipated Tuesday night into Wednesday morning as a cold front shifts through the state.  There is the potential for strong storms, so be sure to keep it tuned to our weathercasts and 24/7 Weather for updates and live storm coverage.  If you want to read my original forecast, look below.


So is the last day of April going to go out with a bang?  There is the potential of some strong to perhaps severe thunderstorms on Friday in North Central Wisconsin as low pressure and a cold front surge through the region.  I don't think this is going to be the most widespread severe weather event locally, but the ingredients are there for storms that could produce damaging winds, heavy downpours and perhaps frequent lightning.  To a lesser extent there may be isolated storms that produce hail, however it is more likely we will see storms in our area that are racing east or northeast at speeds on order of 40 to 50 mph.  Check out the graphic below which I not only broke down what we may expect, but also include the time frame along with where the storm system will be coming from heading through the afternoon.

It appears this same storm system could produce more widespread severe weather in parts of Iowa, southwest Wisconsin, Illinois and southbound into the middle and lower Mississippi River Valley.  In those locales to the south, the odds are a bit more favorable for supercell storms that may produce large hail and possible tornadoes.  Be sure to check back for updates in the wake of this storm system to see how my prediction turned out.

Meantime, the brisk winds will continue to be an issue right into the first half of the weekend.  South to southwest winds at 15-30 mph are likely, with some gusts of 35-40 mph during the daytime hours.  I do think the weekend will feature some sunshine, although there is a chance on Sunday morning of showers from low pressure tracking northeast from the central Plains into the central Great Lakes.  The way the weather pattern shapes up right now, we will not be seeing any big warm up in the next week or so, but there could be additional opportunities for showers.

Enjoy those April showers and the forthcoming May flowers!

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