Update: (2-1-2011, 12:43 p.m.):

A slight shift in the storm’s track and an increase in intensity has slightly increased the snowfall estimates for Ames.

The latest totals from the National Weather Service forecast indicate 3-7 inches of snow are possible for Ames today. The additional snowfall will bring the storm total to 6-9 inches.

The blizzard warning has been expanded to include counties north of the original area. The warning advises that travel will become dangerous and potentially life threatening.

Check back to iowastatedaily.net for updates throughtout the day.

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Following a day of fluctuating snowfall estimates, the two-part winter storm produced 3 inches of snow overnight.

More snow is heading toward Ames for Tuesday, Feb. 1 and Wednesday, Feb. 2. The National Weather Service estimates 3-6 more inches of snow are possible before noon Wednesday.

A winter weather advisory remains in effect until noon Tuesday and blizzard warning will in effect for Ames from noon Tuesday to noon Wednesday.

The forecast calls for winds out of the north at 25-35 mph. According to the blizzard warning, “wind chills will become bitterly cold by Wednesday morning with values hovering around 20 below zero.”