Freeze

Chart showing date of first snow of the season 1948-2018
Chart showing date of first snow of the season 1948-2018

Nebraska Weather: Variability is the Norm October 19, 2018

With much of the state's corn and soybeans still not harvested, it seemed too early for snow, but really how unusual is an Oct. 14 snow? UNL Climatologist Ken Dewey takes a closer look at the variability of Nebraska's weather.

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How Freezing Temperatures Affect Forages October 15, 2018

When plants freeze, changes occur in their metabolism and composition that can poison grazing livestock if not properly managed. Delayed grazing is often the best solution, but how long should grazing be delayed?

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Map of the Midwest showing average date ranges for first 28°F freeze. (Source: Midwest Regional Climate Center)
Figure 1. Map of the Midwest showing average date ranges for first 28°F freeze. (Source: Midwest Regional Climate Center)

Average First Freeze Dates for Nebraska September 21, 2018

Statistics indicate that first freeze (28°F) trends for southeast Nebraska are changing, moving slightly later into the fall while those for northwest Nebraska, at the other end of the scale, are not changing. See average first freeze date ranges here.

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Table of freeze dates and average freeze dates for 2017
Table of freeze dates and average freeze dates for 2017

Growing Season Officially Over for Nebraska October 31, 2017

On Oct. 28, the last of Nebraska's Mesonet weather stations recorded a hard freeze of 28°F, effectively bringing the state's growing season to an end. A table shows dates for 28°F and 32°F freezes as well as average dates for these thresholds for 63 sites.

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3-0-day temperature forecast from the National Weather Service Climate Prediction Center

Forecast of End-of-Season Weather and Freeze Risk September 5, 2017

What's the likelihood you'll see a hard freeze prior to corn maturity? Check out the end-of-season forecast and a table showing risk of a hard freeze for various emergence dates and locations in Nebraska.

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Wheat variety trials exhibiting difference levels of storm damage
Figure 1. Wheat variety test plot northwest of McCook illustrates the difference in amount of damage among varieties from heavy wet snow and rain. (Photos by Robert Klein)

Be Patient When Assessing Winter Wheat Damage May 5, 2017

Additional time is needed to properly access the injury and potential yield loss of Nebraska winter wheat, given the cold temperatures that followed last week's below freezing temperatures, heavy wet snow, and high winds. It takes at least a week to 10 days of warm temperatures to make a quality assessment.

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Freeze damage to corn seedlings
Figure 1. (left) Yellow corn displaying damage from last week’s frost. Eighty to ninety percent of plants in this area of the field will likely recover, thus replanting would not be justified. Figure 2. Plant displaying frost injury. Both in Lancaster County, May 4, 2017. (Photos by Roger Elmore)

Do I Need to Replant My Corn? May 5, 2017

Considering whether your corn should be replanted? The authors look at types of plant damage at early growth stages and the effect on potential yield. It includes a table of relative yield potential of corn by planting date and population.

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Assessing Freeze Injury to Alfalfa April 28, 2017

While several areas of the state experienced lows below 28°F this week, widespread alfalfa losses are not expected at this time.

If you're concerned about whether your alfalfa may have suffered frost injury, remember that frozen alfalfa usually needs some time to recover before damage can be estimated.

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