Snow, Sleet, Freezing Rain

 To make snow, the temperature must be below freezing the entire path until at the surface.  Once snow melts as it is falling, it will not turn back into snow again, no matter the temperature.  Melted snow that drops below freezing will stay liquid, called "supercooled". This is freezing rain.  If freezing rain completely refreezes, it will become sleet.

SNOW T < 32 °F

SNOW T < 32 °F T > 32 °F RAIN SLEET

SNOW T < 32 °F T > 32 °F RAIN FREEZING RAIN

5 °C (40 °F) at 6000 ft -5 °C (23 °F) at 1000 ft

7 °C (44 °F) at 3000 ft -4 °C (25 °F) at 1500 ft

SNOW T < 32 °F T > 32 °F RAIN

SNOW T < 32 °F

 Tuesday January 20 th (7 days in advance)  Outlook: Large winter system will affect area on Monday and Tuesday.  Forecast Tuesday: 50% chance of snow.  Wednesday January 21 st  Outlook: Significant weather system will impact area early next week...accumulations of snow, sleet, and freezing rain late Monday Night and Tuesday.  Forecast Tuesday: 60% chance of light snow. Light snow accumulations.  Thursday January 22 nd  Outlook: Storm system will impact area late Monday and Tuesday...wintery mix  Forecast Tuesday: 60% chance of light snow. Light snow accumulations.

 Friday January 23 rd  Outlook: Storm system will likely spread wintery precipitation Late Monday through Early Wednesday...significant accumulations possible.  Forecast Monday Night & Tuesday: 60% chance of snow. significant snow accumulations possible.  Saturday January 24 th  Outlook: Big winter storm will impact area Late Monday through Wednesday...significant snow and ice accumulation are expected Late Monday Night through Tuesday Night.  Forecast Tuesday: 7 0% chance of snow and slight chance of sleet. Light snow accumulations.  Sunday January 25 th  Preliminary Conference Call  Winter Storm Watch: Two waves...first wave, 3 to 6 inches of snow...second wave, quarter inch of ice.  Forecast  Monday Night: 3 to 6 inches of snow.  Tuesday & Tuesday Night: Freezing rain, sleet & snow.

 Monday January 26 th  Conference Calls  Winter Storm Warning: Snow, sleet, and ice...3 to 4 inches of snow by Tuesday Morning with an additional 1 to 2 inches of snow and sleet Tuesday Night.  Forecast  Monday Night: 3 to 5 inches of snow.  Tuesday: Sleet and snow until midday then sleet, freezing rain and snow in the afternoon. Snow and sleet accumulation of 1 to 2 inches...tenth of an inch ice.  Tuesday Night: Freezing rain and sleet in the evening, snow after midnight. Snow and sleet accumulation of 1 to 2 inches...quarter of an inch of ice.