This may have been factor for the reason for Wheat to soar higher by double digits.....though it all took place after 9:40am and the weather was there before then.

This is a "frozen image" below.

Damage from this freeze may not be great.

Go to this link for the latest:

https://www.weather.gov/     

The main reason for this threat is the mild weather recently that has caused plants to come out of dormancy a couple weeks early!

Look how warm it's been compared to average the last month on this map below!!

The color bars only go up to +8 Deg. F and parts of the Upper Midwest were +10 Deg. F with a couple spots in MN at +11 Deg. F!!!!

80%+ of this was caused by natural variation, related to the strong but fast fading El Nino in the tropical Pacific.

We can make a strong case, however for up to 20% (2 deg. F) of this to be from global warming with the +2 deg. F of warming superimposed on the mid latitudes globally. This is based on the indisputable physics of greenhouse gas warming caused by increasing CO2 which is well mixed in the global atmosphere.

More than that in the higher latitudes, less in the lower latitudes.