Ag Weather Forum

Lower Temps, Rain Return to Forecast

Bryce Anderson
By  Bryce Anderson , Ag Meteorologist Emeritus
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Moderate-to-heavy rain has a broad swath of coverage over the north-central U.S. in the seven-day period, with hints of this heavy band moving south into the southern and eastern Midwest over the 14-day period. (DTN graphic)

Summertime heat to get into the final days of June and early July may have only a brief stay before being replaced by cooler conditions. That's the message in forecast model presentations Friday afternoon.

The jet stream track over the U.S. is not likely to remain static, and will likely turn to one with more variable temperatures over the next week to 10 days. DTN Senior Ag Meteorologist Mike Palmerino summarized the trend as more variable Friday afternoon.

"The southern branch of the jet will feature a ridge in the Gulf of Alaska. A trough along the coast of southwest Canada and the western U.S. A trough over south-central and southeast Canada extending into the northwest Atlantic. And a low-amplitude flow across the north-central and northeast U.S.," Palmerino said. "Despite the west-to-east flow in the north-central U.S., the development of a more north/south temperature gradient across the Midwest could allow for an increase in rainfall next week."

The U.S. forecast model Friday afternoon, looking into the two-week time frame through mid-July, is also showing hints of a re-formation of the spring weather pattern. This features the central U.S. having only a brief round of very-warm-to-hot and dry conditions. The large-scale model suggestion is that the central U.S. has the possibility of returning to a mode of taking in heavy rainfall during the July 10-15 time frame. So, the cool-and-wet pattern that dominated the weather scene during the entire spring 2019 season does not look like it's over with.

These developments are likely to continue to bring on questions about whether crops that were late in getting planted will have enough of a growing season left to go through their development, pollination, filling, and maturity stages before the first freeze of the fall season.

Bryce Anderson
Twitter @BAndersonDTN



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