Hello readers!
I recently was asked our first forecasting question! Ah, Alice... is one of my dear friends and she wants to see some serious winter weather; She lives in St. Louis, MO and that really isn’t really the place for serious winter weather. She specifically asked about thunder snow, and how likely it would be for her to see it this year… this is what I said:
For those who may not now, thunder snow is a winter thunderstorm with the precipitation being snow as opposed to rain. Variations could be sleet as opposed to rain.
Thunder snow usually takes place in regions with extremely intense cold fronts causing huge vertical development right at the frontal boundary.
During my research, which you must do to understand and forecast any type of weather, I went back through the last 10 years of November to February periods and retrieved hourly weather data. Here is what I found: St. Louis has not one occurrence of thunder snow in the last decade. Not one in over 29,000 hours of data!
The chance of you seeing thunder snow is highly unlikely. You may want to move to a more mountainous region where cold fronts with large vertical extent are more common place, then you may see some thunder snow. Living in St. Louis with its mild temperatures that can drop quickly to winter weather… you can definitely count on having an icy winter.
Thanks for reading! I’m looking forward to answering more of your questions!
Note:
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Friday, November 13, 2009
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Thanks for my "shout out" weathergirl. Although I would really like to see some thunder snow, I'm not going to hold my breath :)
ReplyDelete-Alice
Actually, I live in St. Louis too, and tend to follow local weather. In am 28 years old, and I've witnessed thundersnow four times in my life of living here. Thundersnow has occurred more times than that in the St. Louis area. But they tend to be rather localized. Thundersnow is more common than most people think.
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