Posted at: 07/25/2013 8:26 PM
Updated at: 07/25/2013 8:28 PM
Late July Cool Blast
Tonight's storms on the leading edge of a much cooler weather pattern that will see temperatures dip to levels that are well below normal for late July standards... some might call it 'cold'. A potent cold front plus a weather pattern that is oriented from northwest to southeast is to blame.
The Jet Stream is taking a dip over the upper midwest on Friday, allowing cool Canadian air to infiltrate into the US. The dip in the jet doesn't show urgency to head out either, holding the pattern through the weekend as well.
Our in-house computer model Storm Tracker is pumping out temperatures that are more fit for football weather than getting out on the boat. Storm Tracker Temps is suggesting upper 60s to 70° on Friday afternoon at 2.
On Saturday afternoon at the same time... more of the same.
During the overnights, temperatures look to take the biggest hit, dropping into the upper 40s Saturday morning and Sunday morning. Taking a look at 126 years of record data for Rochester (the official climate station for SE Minnesota) we will be getting close to those records. As for daytime highs, it looks like there's enough sunshine to keep us out of the basement when it comes to the coldest high temperature.
By next week, some more typical July weather will be back, as those temperatures float back up into the 80s. So fear not, it's not the start of fall yet!
Storm Tracker 6 Chief Meteorologist