Farther east in Texas, the temperature was 64 in Dallas – a 42-degree temperature difference over about 300 miles (480 km). At 6 am CST, the temperature in the western Texas city of Amarillo had dropped to 22 ☏ (−6 ☌) with a strong northerly breeze. The contrast between the two air masses was stark, and by the morning of October 29 the cold front was about halfway through Texas. Meanwhile, high temperatures remained below 20 ☏ (−7 ☌) Fahrenheit across most of Montana and Wyoming. High temperatures reached into the 70s from the middle Mississippi River Valley south into northern Texas, and into the 80s across much of central and southern Texas. On October 28, temperatures to the east of the cold front were above normal. The 1991 Halloween Blizzard developed from a strong arctic cold front that pushed south and east through the central United States several days prior. The extratropical low off the East Coast can be seen, and would later develop into the 1991 Perfect Storm. A cold front stretched from the Hudson Bay to the Gulf of Mexico. ![]() Meteorological synopsis Surface map from October 30, 1991. Between the blizzard and the ice storm, 22 people were killed and over 100 were injured. Arctic air that was pulled southward behind the storm had combined with the heavy snow pack to produce many record low temperatures. ![]() By the time the precipitation stopped falling, many cities in the eastern half of Minnesota and northwestern Wisconsin had witnessed record early-season snowfall accumulations, while parts of southern Minnesota and northern Iowa were crippled by a large ice storm. Over the last week of October 1991, a large storm system over the Atlantic Ocean ( 1991 Perfect Storm) blocked most of the weather patterns over the eastern half of the United States, and in turn, moisture from the Gulf of Mexico was funneled straight northward over the affected region. The 1991 Halloween blizzard was a powerful storm that caused a period of heavy snowfall and ice accumulation, which affected parts of the Upper Midwest of the United States, from October 31 to November 3, 1991. The 1991 Perfect Storm can be seen at the far right.Ĭentral United States, Great Lakes region, Eastern Canada If you are planning travel into Iowa and northern Illinois, west and south of Chicago, moderate to heavy snowfall is expected beginning tonight and lasting into Saturday.The blizzard developing over the Central U.S on October 31, 1991. Stay tuned to the latest forecasts and possible Winter Weather Advisories for the area around Darlington and Benton. Slippery conditions from falling snow are expected over a part of south central Wisconsin later tonight into Saturday morning. Also review our Winter Weather page for more information. These probabilities show considerable uncertainty regarding the amount of snow that will fall during this period. Here is the latest snowfall estimate across southern Wisconsin for Friday Night into Saturday.Ĭheck out our experimental snowfall probabilities for tonight into Saturday here. The area from Janesville to Lone Rock and southwest of that line has the best chance of receiving between one and four inches of snow, with locally higher amounts possible in Lafayette county. The below image depicts the chance for snowfall greater than 1" occurring later tonight into Saturday morning. The below graphic depicts the estimated start times for the snow: The snow is expected to begin later in the evening into the overnight, with the main period of snow expected from midnight through 6 or 7 am. ![]() There remains some uncertainty regarding snow amounts due to the potential of drier air than expected in the low levels of the atmosphere possibly decreasing snowfall totals. Low pressure passing by well to the south of Wisconsin across northern Missouri will be the cause of the return of the wintry weather. A few inches of snow are expected, especially southwest to south of Madison, favoring the Darlington, Monroe, Benton and Dodgeville areas. ![]() Accumulating snow continues to look likely over parts of south central and southwest Wisconsin Friday night into Saturday morning.
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