• November 2020 National Weather Summary

    From James Munley@21:1/5 to All on Wed Dec 9 15:45:09 2020
    NOVEMBER 2020
    1-7: Dry weather occurred throughout the nation’s mid-section, including the Plains, Midwest, and much of the South. Warm and dry Western weather yielded to cooler, wetter conditions. Precipitation, initially heaviest in the Northwest, later spread to
    other areas of the western U.S., boosting topsoil moisture and aiding wildfire mop-up efforts. Late-week snow developed at many locations across the interior West. Meanwhile, late-season warmth pushed weekly temperatures 10 to 20°F above normal across
    the northwestern half of the Plains and upper Midwest. A larger area of warm weather encompassed most areas along and northwest of a line from the southern Plains into the lower Great Lakes region.

    Temperatures soared to 80°F or higher as far north as Minnesota and South Dakota, tying or breaking monthly records in multiple locations. On November 3, monthly record-high temperatures included 80°F in Scottsbluff, NE, and 68°F in Stanley, ID.
    Scottsbluff attained 80°F again on November 4, followed by a high of 81°F on November 5. Incredibly, Scottsbluff had reported a monthly record low of -10°F on October 27. Elsewhere in Nebraska, a high of 85°F on the 3rd in Grand Island represented
    the second-highest November temperatures on record in that location, behind only 88°F on November 8, 1915. In the Great Lakes States, monthly record highs established on November 4 included 77°F in Alpena, MI, and 75°F in Brainerd, MN. Brainerd again
    reached 75°F on November 6. On November 4 in Wyoming, Sheridan tied a monthly record originally set with a high of 81°F on November 12, 1999. In Arizona, Tucson, tied a monthly record (from November 24, 1924) with a high of 94°F on the 5th. Tucson
    reported a low temperature of 72°F on the 6th—the first time on record in that city there was a minimum reading in November at or above the 70-degree mark. The parade of monthly record highs continued through November 6, with temperatures reaching 87°
    F in North Platte, NE; 84°F in Mitchell, SD; 78°F in Ashland, WI; 76°F in St. Cloud, MN; and 75°F in Marquette, MI. Late in the week, warmth continued in the central and eastern U.S., while chilly air settled across the West. On November 7,
    Quillayute, WA, registered a daily-record low of 28°F, while daily-record highs included 79°F in Hartford, CT, and Mitchell, SD.

    8-14: As the week progressed, historic and record-breaking November warmth shifted eastward, boosting weekly temperatures at least 10 to 15°F above normal in much of the South and East. During the mid- to late week period, markedly cooler air arrived
    across the Plains and Midwest, while chilly weather prevailed in the West. Readings averaged 5 to 15°F below normal in most of the western U.S., with some of the coldest weather—relative to normal—occurring in Montana. Record-setting warmth ended by
    mid-week across the Plains and Midwest but continued for several days in the South and East. On November 8, the week began with monthly record highs in locations such as Dayton, OH (80°F), and Green Bay, WI (75°F). In Michigan locations such as Lansing
    and Kalamazoo, November 9 highs of 77°F were the latest readings on record of 75°F or greater. Elsewhere in Michigan, monthly records from November 1938 were broken on the 9th in Traverse City (78°F) and Sault Sainte Marie (75°F). With a high of 80°
    F on November 9, Toledo, OH, tied a monthly record and experienced its latest reading of 80°F or higher (previously, November 4, 2003). In Wisconsin, La Crosse posted five consecutive daily-record highs (73, 75, 74, 74, and 75°F) from November 5-9. By
    November 10, record warmth in the East resulted in monthly record highs of 84°F in Jackson, KY, and 75°F in Caribou, ME. Caribou had never experienced a high above 70°F in November; prior to this year the monthly record had been 68°F on November 1,
    1956 and 2019. From November 4-10, high temperatures in Chicago, IL, reached 70°F or greater on 7 consecutive days. Previously, Chicago’s longest November streak of 70-degree warmth occurred from November 15-19, 1953. Chicago also set a record with 7
    days of 70-degree warmth for the entire month of November (previously, 6 days in 1953 and 1975). Rockford, IL, attained 70°F or greater each day from November 3-10, a record for so late in the season. Rockford’s previous latest 8-day streak of 70-
    degree warmth had occurred from October 19-26, 1963. In addition, Rockford doubled its November record for total number of 70-degree days; the previous standard of 4 days had been set in 1924, 1938, 1978, 1999, and 2008. By week’s end, lingering warmth
    was largely confined to the Deep South, where Harlingen, TX, notched consecutive daily-record highs (91 and 92°F, respectively) on November 13-14. In contrast, chilly conditions gripped the West. In California, three consecutive daily-record lows were
    observed in locations such as South Lake Tahoe (5, -1, and 8°F from November 8-10) and Redding (29, 26, and 25°F from November 10-12).

    22-28: In the West, patchy precipitation was confined to the Four Corners region and the Northwest. By November 24, drought covered 75.6 percent of the 11-state Western region and 48.6 percent of the Lower 48 States, according to the U.S. Drought Monitor.
    National drought coverage was the highest in more than 7 years, since September 2013. Farther east, however, precipitation fell across portions of the central and southern Plains.

    Near-or above-normal temperatures prevailed across the central and eastern U.S., while cooler-than normal conditions covered the Intermountain West. Weekly temperatures averaged at least 10°F above normal in parts of the Dakotas and the Deep South—but
    ranged from 5 to 10°F below normal across portions of the Great Basin and Intermountain West. Temperatures rarely strayed into record-setting territory, although coastal Texas was notably warm. Brownsville, TX, twice posted consecutive daily-record
    highs—87 and 89°F, respectively, on November 24-25, followed by readings of 88°F on November 27-28. Galveston logged a daily-record high of 81°F on November 27; the only later readings above the 80-degree mark in that location occurred on December
    13, 2016, and November 29, 2016. Farther east, Thanksgiving Day featured daily-record highs for November 26 in locations such as Tallahassee, FL (83°F); Charleston, SC (82°F); and Lynchburg, VA (73°F). Late in the week, unusual warmth in the north-
    central U.S. led to daily-record highs for November 28 in Aberdeen, SD (60°F), and Jamestown, ND (58°F). In contrast, lows of 36°F (on November 27) in Alpine, CA, and -3°F (on November 28) at Utah’s Kodachrome Basin State Park were daily-record
    lows. Near- or above-normal temperatures dominated Alaska, with weekly readings averaging more than 10°F above normal at some interior and western locations. On November 23, Saint Paul Island posted a daily record-tying high of 44°F.

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