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Thursday December 6, 2018

Assignment: Predict the 24 hr minimum temperature (deg F) for Sioux Falls, SD (KFSD)

After the Idaho Falls forecast yesterday, let's move to Sioux Falls, South Dakota today. The two MOS forecasts differ in the minimum temperature forecast by about 10 F. So let's forecast Thursday's Tmin in Sioux Falls and see which model is more correct.

Question: The NWS discussion says "Winds diminishing by later Thursday and into the evening should let the bottom drop out to temps, and likely an evening or early overnight low for many locations." As the NAM MOS is predicting windier conditions in the afternoon and evening, why would that tend to prevent temperatures from falling as much?

Forecasts for Sioux Falls, SD (KFSD)
Forecaster Tmin, deg F (error) Comment Day Score