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      Snow!: September 22, 1995

      A deep upper-air trough provided the right ingredients for heavy snow over the western U.P. September 22, 1995.
      A heavy snowstorm brought out the plows around Ironwood on September 22, 1995. Around six inches piled up with lighter, but still significant amounts over other western areas. The Houghton County Airport near Calumet measured three inches, while Ontonagon had two inches of wet snow.

      An upper level low with its attendant cold pool brought just the right ingredients together over the far western end of the peninsula (Image 1 above). Farther east, a drizzly rain fell, mixed with only a few snowflakes at the National Weather Service (NWS) near Negaunee.

      The unusual snow was followed by a hard freeze over much of the U.P. However, winter wasnâ??t about to set in quite yet. The weather pattern flipped in October bringing one last glimmer of summer. During the second week of the month warm air pushed into the Upper Great Lakes culminating in a record-high of 85 degrees at the NWS on October 12, 1995. This is the warmest temperature so late in the season.

      Itâ??s turning colder now. However, it will not get cold enough for snow, but some lake-effect rain is likely off Lake Superior. Surface water temperatures are in the mid to upper 50s, while air temperatures a mile or so above the lake are forecast to fall to about the freezing mark. This differential in temperature is enough to generate precipitation. The best chances of rain off the lake will occur from late tonight into early Saturday night mainly over central and eastern portions of the U.P. Then building high pressure should disrupt the lake-effect process and lead to quiet but cool weather for the latter portion of the weekend.