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Frost / freeze maps and storm spotter training

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by Mark Seeley, Extension Climatologist

Frost / freeze analyzed maps available

Last weekend (May 8-9) brought widespread overnight frosts and freezes to many parts of Minnesota. Reports indicate that some fruits and crops were damaged, especially in low-lying areas, but many may recover. Further, it appears this may be the last frost occurrence for the season over most of the state, as a significant warming trend is expected to start this weekend.

As is often the case many growers and crop advisors are concerned about assessing any damage due to these low temperatures (primarily 27-32 degrees F), but patience is required. It always takes a few days to sort out which areas might be permanently killed, as many plants, depending on stage of development are resilient and begin regrowth within a week.

The Minnesota Climatology Working Group offers daily analyzed maps to examine the spatial extent of frosts and freezes.

For those interested in storm spotter training

For Minnesota citizens who are interested in becoming storm spotters for the National Weather Service, SKYWARN spotter training classes will be offered free of charge during the month of May on eight different occasions. National Weather Service also encourages citizens to become involved in the eSpotter System which supplements information about storm location, intensity, and aftermath damage assessment. If you are interested in these programs or the free training sessions you can visit the web site.

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