Quarterly Climate Impacts and Outlook for Alaska and Northwestern Canada for September – November 2019; outlook for January – March 2020. Dated December 2019.
Autumn 2019 began with drought or abnormal dryness in southern Alaska, stretching from the Alaska Peninsula in the west to the Panhandle in the east. Repeated autumn storms brought a range of near normal to much above normal precipitation to southwest and south central Alaska.
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Quarterly Climate Impacts and Outlook for the Southern Region for September – November 2019. Dated December 2019.
Fall temperatures as a whole were near normal, but there were two distinct regimes. Record warmth was experienced from September through early October while the end of October through November were much cooler than normal. Precipitation behaved in a similar fashion, with several stations experiencing their driest September on record followed by their wettest October on record.
Quarterly Climate Impacts and Outlook for the Great Lakes Region for September – November 2019. Dated December 2019.
Autumn temperatures ranged from 2°C (4°F) below normal to 2°C (4°F) above normal. Autumn precipitation ranged from 88% to 125% of average, with the overall basin seeing 115% of average.
Quarterly Climate Impacts and Outlook for the Gulf of Maine Region for September – November 2019. Dated December 2019.
Autumn temperatures (averaged over September, October, and November) ranged from 2°C (4°F) below normal to near normal in most areas, with eastern Massachusetts up to 1°C (2°F) above normal. Autumn precipitation (accumulated from September to November) ranged from 50% of normal to 150% of normal.
Quarterly Climate Impacts and Outlook for the Western Region for September – November 2019. Dated December 2019.
Autumn temperatures were well below normal across the northern tier of the region while near to above normal temperatures were observed across California and the Southwest. Several areas of the West reported below normal autumn precipitation including northern California, eastern Utah, and western Colorado. Montana, northern Wyoming, northwestern Utah, and the Southwest reported above normal precipitation.
Quarterly Climate Impacts and Outlook for the Southeast Region for September – November 2019. Dated December 2019.
Above-average temperatures were recorded over most of the Southeast. Mean temperatures were in the top five warmest at 35 long-term stations. Autumn precipitation was below normal for most of the Southeast region. None of the long-term stations ranked within the top 10 wettest for the season.
Quarterly Climate Impacts and Outlook for the Chesapeake Bay Region for September – November 2019. Dated December 2019.
Quarterly Climate Impacts and Outlook for the Missouri River Basin September – November 2019. Dated December 2019.
Extreme temperature swings were masked by what was, overall, a largely near-normal autumn.The wet pattern continued across the northern tier of the Missouri River Basin. Overall, autumn 2019 was one of the wettest on record for North Dakota (wettest), South Dakota (5th), Iowa (6th), and Montana (11th).
Quarterly Climate Impacts and Outlook for the Northeast Region for September – November 2019. Dated December 2019.
The Northeast's autumn average temperature was 0.1°F above normal, ranking in the middle third of all years. The Northeast saw 95% of normal precipitation during autumn, ranking in the middle third of all years.