The image to the left explains the whole issue with tonight's snow/sleet. Look at PA. The radar image is rather broken up. I expected it to be like this over western PA, but then it would fill in as it came east ... but it is not doing it as well as I thought.
Verdict: Precipitation is not steady enough to overcome minor warm layer in the atmosphere. Therefore we get light freezing rain, esp. in the valleys with some sleet mixing in at times.
Conclusion: Coating of sleet at the most. Minor accumulation of ice on cold surfaces.
Just a quick update for Sun-Sun night.
Clouds increase and thicken in the morning to early afternoon. Light snow develops after 5 or 6 pm. A mix of light snow/sleet or all sleet dominates through the late evening but tapers off after midnight.
Accumulations: ½” - 2” snow and sleet.
Note: Unusual accumulations due to uncertainty in whether sleet just mixes in or takes over. Total take over = ½”. Mixing = 2”.
We'll tackle Wed's storm on Monday. But it is looking fairly typical for this kind: Light accumulation snow, longer duration of sleet, then some freezing rain/rain.
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Pastor Terry. He received his bachelors degree in Meteorology from the State University of New York at Oneonta, in 1994. The education continued as a hobby by reading the blogs of some of the best forecasters in the business. Although forceasting the weather is an imperfect science, it is a pleasure to follow what the Creator has made.