Showers and Cooler Temperatures in the East; Multi-Day Rain Event in the Southwest

A cold front in the East will bring showers and thunderstorms and much cooler temperatures from the Northeast into the Southeast. The Southwest, centered around New Mexico, will continue to see showers and thunderstorms, where there maybe isolated flash flooding. Tropical moisture will bring a multi-day period of thunderstorms and locally heavy rainfall across the Southwest beginning Thursday. Read More >

Prior to the seasonal green-up, land management agencies engage in a lot of prescribed burning to help promote a healthy and sometimes safer ecology. The Horicon Marsh area up in northern Dodge county is an active place for prescribed, or controlled burns. One fire on, Thursday, April 23, was generating a large smoke plume that was clearly visible from our tower camera and was picked up by our WSR-88D doppler radar.

Here's the view looking north from the tower camera:

Here's the view from the radar:

We can use this example as a training exercise to run the NOAA HYSPIT model. If this were a hazardous materials release that generated a potentially dangerous plume, the HYSPLIT model could give us a good idea where the plume is headed and what the dispersion concentrations would be. We would be working closely with state and local emergency management to help inform the public of any possible dangers. So, with that in mind, here an animation of the smoke plume using the HYSPLIT model. It looks like a reasonable approximation!

Davis

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Showers and Cooler Temperatures in the East; Multi-Day Rain Event in the Southwest

Large Smoke Plume From Horicon Marsh Area