Crop & Pest Report


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May 4 through May 10, 2017 Weather Summary/Outlook (05/04/17)


May 4 through May 10, 2017 Weather Summary/Outlook

Most of the North Dakota Agricultural Weather Network (NDAWN) stations finish the month of April near average for temperatures, yet, most of the month the temperatures were either noticeably above or below average. The first half of the month was generally above normal and the second half of the month below normal.


The cold second half of April was also wet across the southern and eastern portions of North Dakota into northwestern Minnesota. Because some of that moisture fell as snow, many of the NDAWN stations likely recorded even more precipitation than was measured as frequently not all the snow melts through the rain gauges and underestimates the total precipitation. There were some scattered showers earlier this week but it was very light with a few isolated areas getting one or two tenths.wthr.ritchison.2

The cold pocket of air that was situated over the northern plains last week has shifted to the Ohio River Valley and Mid-Atlantic States. Also, another storm system will be moving into the west coast of the United States. This combination will mean a surge of warm air into the northern plains this weekend into next week. Temperatures should average 5° to 10° above normal in the next 7 days, with some days being even warmer than that. In fact, temperatures may reach as high as 80° or a bit warmer especially in western North Dakota on a day or two this weekend into early next week. Temperatures that warm will generally be localized and most of the region will experience maximums in the 65° to 75° range. The minimums are expected to be in the 40s and even 50s at times.

 Above average temperatures this time of year tend to be dry periods and that will be mostly true. The exceptions will be as a couple of upper-air disturbances moving through the region early next week. It appears that these disturbances will bring scattered rain to the area, which means the next 7 days will be warm with rainfall more than likely not be widespread nor heavy.

With the warmer than normal air temperatures and with limited moisture expected, the soil temperatures will be increasing quite a bit in the next 6 to 10 days. Currently morning soil temperatures are in the 40s, but should rise to the 50s or low 60s by the middle of next week. Of course, soil temperatures rise each sunny day quite a bit, but the mornings are the best time to analyze the day-to-day changes in soil temperature.


 Estimated Growing Degree Days for the period of May 4 through May 10 are given below for Base 32, 44 and 50 degrees.


Daryl Ritchison

Interim Director of the North Dakota Agricultural Weather Network

This site is supported in part by the Crop Protection and Pest Management Program [grant no. 2017-70006-27144/accession 1013592] from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed are those of the website author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

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