New All-time Record Low Temperature in Illinois

Re-Blogged From WUWT

Mt. Carroll reclaims the title for the record minimum temperature in Illinois

From the Illinois State Climatologist:

Champaign, Ill., 3/6/19: An Arctic outbreak in late January 2019 led to widespread bitterly cold temperatures across much of the Upper Midwest, including Illinois. On the morning of Jan. 31, the cooperative weather observer at Mt. Carroll, located in Carroll County, reported a temperature of -38 degrees.

After a comprehensive review, the State Climate Extremes Committee (SCEC) unanimously voted to validate the -38 degrees reading as the new official state record minimum temperature. This committee ensures that the observation is meteorologically plausible, is within a range that the reporting instrument can detect, and that the instrument is in proper working order.

Brian Kerschner at the Illinois State Water Survey represented the Illinois State Climatologist Office as a member of the SCEC, along with delegates from the National Weather Service (NWS), the Midwest Regional Climate Center (MRCC), and the National Center for Environment Information (NCEI).

The previous minimum temperature record for Illinois was -36 degrees set in Congerville, located in Woodford County, on Jan. 5, 1999. The coldest temperature prior to the Congerville record, -35 degrees, was also set at Mt. Carroll in January 1930, and was later tied with Elizabeth in February 1996.

The Mt. Carroll station is a traditional daily observing station located in northwestern Illinois. It has been in service, with minor interruptions, since 1895, and has been observing temperatures since 1897. It is operated by the City of Mt. Carroll and attended by staff at the city’s water treatment plant.

You can view the final report on the NCEI website here: https://www.ncdc.noaa.gov/extremes/scec/reports

A complete list of current state records can be found here:
https://www.ncdc.noaa.gov/extremes/scec/records/IL

Mt. Carroll coop weather observation site
Feb. 1, 2019.
Photo: NWS Quad Cities WFO

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