Freeze Risk

Sorghum-sudan cover crop plant damaged by a light frost last week.

Forage Hazards Following a Freeze Event

September 30, 2020
Freezing temperatures cause metabolic and cellular changes to our forage crops, specifically prussic acid formation and nitrate poisoning are the biggest concerns. Learn more about these issues and how to avoid them.

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forecast low temperatures for September 9, 2020

Cold Air Event Expected Next Week, Frost Possible

September 2, 2020
The front is projected to begin its move through the state September 8 and produce widespread cold rains and strong winds statewide, with snow or a mix of snow and rain across the Nebraska Panhandle.

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Nebraska map showing locations and dates of first hard freezes.

Forecast Offers Harvest Hope if Snows Stay North

October 8, 2019
With extended wet conditions this season, every precipitation event going forward has the potential to bring harvest activity to a grinding halt. The big question is how extensive will the delays be. Climatologist Al Dutcher offers good and bad news for some.

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Freeze Risk Shifts from August Report

September 12, 2019
Climatologist Al Dutcher looks at freeze risks for various sites, maturities and planting dates for corn. In some areas slightly warmer-than-normal August temperatures reduced freeze risk while in others, conditions were cooler than normal.

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Fall Freeze Risk as of early September (Table 1)

September 10, 2019
Table 1. The odds (%) of an early fall hard freeze (28°F or less), calculated using 2019 GDD accumulations from emergence to August 31 and applying 1981-2010 GDD accumulations from September 1 to the average first hard freeze date. The table (stacked in two parts) shows the odds for four emergence dates.

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2019 Freeze Risk as of July 31 for Multiple Nebraska Sites

August 8, 2019
Table 2. Fall hard freeze probabilities based on the current 1981-2010 normals comparison period. (Data source: National Centers for Environmental Information Normals, Means, and Extremes Database)
LOCATION

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Fall Freeze Risk, August 2019 (Table 1)

August 8, 2019
Table 1. The odds (%) of an early fall hard freeze (28°F or less), calculated using 2019 GDD accumulations from emergence to July 31 and applying 1981-2010 GDD average accumulations for August 1 to the average first hard freeze date. The table (stacked in two parts) shows the odds for four emergence dates.

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Calculating the Odds of a Hard Freeze

August 7, 2019
How likely are you to see a hard freeze (28°F or less) before your corn reaches maturity? Check these tables based on current and historical conditions to see whether you're in an area of concern.

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