In the case of snowfall, the total precipitation is given in centimetres. If the precipitation falls as water or sleet, the total precipitation is given in millimetres. The total precipitation is given in inches. For example in temperatures just above freezing, snowfall with the water content of 10 millimetres of water forms a snow layer 10 centimetres thick on the ground, but in temperatures around -20 degrees Celsius the layer formed by same amount of water is 20 centimetres thick. If the water content of the rain is kept constant, the colder the weather, the thicker a layer the falling snow forms on the ground.įor example in temperatures just above freezing, snowfall with the content of a quarter of an inch of water forms a 2,5 inches thick layer of snow on the ground, but in temperatures around -5 degrees Fahrenheit the same amount of water forms a layer of snow 5 inches thick. Temperatures also affect how much a given amount of snowfall grows the amount of snow on the ground. These factors cause the amount of snow on the ground to grow less than the snowfall amount. ![]() Record: 108 (1998) Tomorrow night - Near-record warm. Wednesday High: 100F Low: 79F Tomorrow - Partly cloudy, very hot. The total snowfall refers to the snowfall from the cloud and does not take into account local melting, packing or drifting of snow. High: F Low: 78F Today - Tonight - Near-record warmth. The total precipitation forecast gives the expected total precipitation for the whole 24-hour day. Please note that especially in inland locations wind gusts can be up to 1,5 to 2,5 times stronger than the 10-minute average wind speed. ![]() The wind forecast shows the strongest expected 10-minute average wind speed of the day. Unlike the daily weather symbol, the temperatures, wind information and total precipitation take into account the whole 24-hour day. If temperatures stay locked near freezing Thursday (as opposed to slightly above in the mid & upper 30s), it’s very possible that our bridges and overpasses may be cold enough to support light. Daily temperatures, wind information and total precipitation The cloudiness on the daily weather symbol is calculated as a weighted average of the predicted cloudiness of that day, with most weight assigned to the afternoon hours. ![]() You can see the more precise timing and intensity of the rain in the hourly forecast. The rain can be light rain that falls for a longer time period, or a heavy rain of short duration. The amount of rain drops on the daily weather symbol represent the total precipitation amount of that day. The weather in the evening or night time do not show on the symbol. Again, we are forecasting a relatively small window of time where temperatures will be near or below freezing, allowing any frozen precipitation to melt by Friday afternoon.The daily weather symbol gives an overview of the weather between 7 a.m. Temperatures– last February we spent days below freezing, preventing all the snow and ice from melting until almost a week after the first snowflakes fell.Most roads will still be passable for power crews to tend to any power outages that my occur. Are they possible? Yes, but not to the extent of what we saw last year. We are not forecasting heavy amounts of ice and snow that will cause widespread power outages. Severity– it’s possible to see ice on the roads Thursday and Friday, but that will likely be the extent of the major impacts.NOT days of subfreezing temperatures and multiple storms of wintry weather like last year. Roughly about 24 to 36 hours for icy conditions to exist. Timing– this week will be a relatively small window of potential wintry weather. ![]() Every winter storm is different, but the one in the forecast this week will be more in line with what we usually see in a winter storm.
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