Snow criteria changes for winter storm watches & warnings

Map information courtesy of National Weather Service in Indianapolis

By RYAN MORSE
WISH-TV |
wishtv.com

The National Weather Service has changed its heavy snow criteria for winter storm watches and warnings.

Previously, the heavy snowfall criteria were sectioned off, ranging from at least 6-8 inches of snow in 12- or 24-hour spans in central Indiana. The new heavy snow criteria in central Indiana will be at least 5 inches of snowfall during a winter storm event.

By changing the criteria, the National Weather Service is hoping to align Indiana climatology better with watches and warnings.

Not being tied to a timeframe will also allow for an improved approach to any event.

The heavy snow thresholds will differ depending on location. In northern Indiana, winter storm watches and warnings may be prompted for snowfall amounts six inches or more.

Meanwhile, in southern Indiana, the threshold will be four inches.

The threshold for other locations outside of Indiana have been posted online.

It is important to note that the criteria for a winter weather advisory remain untouched. Winter weather advisories for snow are usually issued when three to five inches of snow is possible.

Other hazards can still impact whether or not a winter storm watches and warnings are issued. Any combination of hazards, or the increased impact of a specific system can reduce the criteria for a winter storm watch or warning.

2 Comments on "Snow criteria changes for winter storm watches & warnings"

  1. I love this!! It seems like I get northeast andeverywhere else but here when looking at weathermon computer.

  2. I love it and want a lot of snow and more below zero temperatures

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