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C.O.R.N. Newsletter

  1. Author(s): Aaron Wilson

    Much of Ohio experienced frost or freeze conditions this past Friday and/or Saturday night. In fact, many locations dropped below 30°F (Table 1), with unofficial observations as cold as 26°F! How does this compare to typical first freeze dates?

    Issue: 2020-36
  2. Author(s): Jim Noel

    Areas of frost have occurred in parts of Ohio in late September to early October but the pattern is about to switch again toward a warmer and drier pattern for a decent part of October.

    October Outlook

    Issue: 2020-34
  3. Author(s): Jim Noel

    The cooler than normal blob of water in the eastern Pacific Ocean near the equator tends to push the first autumn freeze later than normal in our region. Therefore, there is no indication of an early freeze in September this year. It appears the first freeze for Ohio will not come until October either on schedule or a bit later than normal.

    Issue: 2020-29
  4. Author(s): Aaron Wilson

    Midwest Derecho

    Issue: 2020-27
  5. Author(s): Aaron Wilson

    As of the Thursday July 30, 2020 release of the U.S. Drought Monitor, 37% of the state is covered by D1- moderate drought conditions (Figure 1). Hot and mostly dry conditions continued through much of June and July, with only scattered areas of heavy rain throughout the state. This has depleted soil moisture and lowered stream flows. If you are seeing drought impacts in your area, consider submitting a report to the Drought Impact Reporter.

    Issue: 2020-25
  6. 16-day Mean Precipitation
    Author(s): Jim Noel

    The overall drier pattern in many but not all places in Ohio this summer appears like it will relax closer to normal in August. The greatest uncertainty with the outlook will center around how the tropical moisture impacts the eastern United States.

    Issue: 2020-24
  7. Figure 1: U.S. Drought Monitor for Ohio as reported on Thursday July 16, 2020.
    Author(s): Aaron Wilson

    Hot and mostly dry conditions have continued across Ohio. As of July 20, Columbus has reach at least 90°F on 16 out of 20 days in the month, with many locations around the state recording at least double-digit days at that mark. Temperatures this past week averaged 2-8°F above normal, with the warmest conditions compared to average across northern Ohio.

    Issue: 2020-23
  8. 16-day rainfall outlook
    Author(s): Jim Noel

    After a cool spring, we are playing catch up fast with a warm June. June will end up being 1-3 degrees above normal with rainfall 50-100% of normal. The warm weather will continue for the rest of the summer. Maximum temperatures will likely be 1-3 degrees above normal in July. However, overnight temperatures will be even warmer, some 3-6 degrees above normal. Expect high temperatures in July to commonly be in the 85-95 range with overnight temperatures in the 65-75 degree range. 

    Issue: 2020-20
  9. Figure 1: Multi-sensor observed month-to-date precipitation ending on June 22, 2020. Figure from the Midwestern Regional Climate Center (https://mrcc.illinois.edu).
    Author(s): Aaron Wilson

    Things change quickly when it comes to weather and climate. Recall 2019, a record wet start to the year for many across Ohio, only to see 26% of the state enveloped in moderate drought conditions by October. Though not nearly as wet as last year, it has been wetter than average through the first five months of 2020.

    Issue: 2020-19
  10. Author(s): Aaron Wilson

    After a long period of cold spring temperatures, the last couple of weeks have generally been above average by a degree or two in southeast Ohio to more than four degrees above average in north-central and northeast Ohio. Precipitation has usually been light during this time as well (less than 2 inches) except in a few heavier pockets across southern and eastern Ohio (Figure 1).

    Issue: 2020-17

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