Minnesota Meso

Just posted on the Minnesota forecaster site that chances of a tornado seems to be increasing for the Twin Cities metro area.

Next Friday and Saturday are looking interesting for the 5 state area of North and South Dakota, MN,WI or Iowa. Way to early to figure out where and what day. Something to keep an eye on.

Although this isn't Feb '36 it is in Jan of that year. What is the coldest windchill ever seen in the Twin Cities or Minnesota? The answer can be a little tricky because on November 2001 the formula on how to calculate the windchill was changed. Perhaps the coldest windchill the Twin Cities has ever seen was -67 degrees F with the new formula (-87 degrees F with the old formula) back on January 22nd 1936. The temperature was -34 degrees F with a wind speed of 20mph. All traffic in the Twin Cities was severely hampered and a number of fatalities were caused by the cold. Without a lengthy state-wide wind record, it is difficult to say when was the coldest statewide windchill. There are some candidate dates though besides January 22, 1936. On January 9th and 10th, 1982 temperatures of -30 degrees F and winds of around 40mph were reported in Northern Minnesota. This would translate to -71 degrees F by the new formula (-100 degrees F by the old formula.) Link to site I got this from http://climate.umn.edu/doc/journal/historic_windchills.htm