snow storms

Where:  (1)
-anywhere temps get below freezing.Mostly in Northeast U.S.A.

Why:(1)
-dominant varieties of precipitation are formed at very low temps, ground temps have to be low enough for ice to form.
Impact: (2)
-schools close, cars cant drive safely, people get snowed it, stores and businesses close,most plants freeze and die.
Technology:(2),(3)
-announced over the tv, radio, email, text messages and it is announced before, during and after the storm. Some technology used to predict snow storms are rain gauge (which shows how much rain or snow), barometer (which measures air pressure, it decreases when wet and increases when dry), thermometer(which tells temp).

 sites:
1. http://en.wikipedia.org/wiki/winter_storm
2.www.ussartf.org/predicting_weather.htm
3. www.rcn27.dial.pipex.com/clouds/instruments.html