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Document Date
September 23, 2024
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Quarterly Climate Impacts and Outlook for the Western Region for June–August 2024. Dated September 2024.

Summer temperatures were above normal for most of the West except for isolated areas along the California, Oregon, and Washington coasts. California and Arizona saw their warmest summers on record with Nevada, Utah, and New Mexico having their second warmest on record. Precipitation was below normal for most of California, Nevada, Oregon, and Idaho.

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Document Date
June 24, 2024
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Quarterly Climate Impacts and Outlook for the Western Region for March–May 2024. Dated June 2024.

Spring temperatures were generally near normal or below normal for most of the West. Precipitation was near-to-above normal for most of the West with north-central Arizona and southeast Montana much above normal.

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March 22, 2024
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Quarterly Climate Impacts and Outlook for the Western Region for December 2023–February 2024. Dated March 2024.

Winter temperatures were above normal throughout the West with much of the region in the top 10% warmest winters since 1895. Precipitation anomalies were mixed for the winter season. Much of Oregon, northern Nevada, northern Utah, and eastern Colorado saw much above normal precipitation while northern Wyoming and parts of northern Idaho and Western Montana had much below normal precipitation.

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Document Date
December 22, 2023
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Quarterly Climate Impacts and Outlook for the Western Region for September–November 2023. Dated December 2023.

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Document Date
September 22, 2023
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Quarterly Climate Impacts and Outlook for the Western Region for June–August 2023. Dated September 2023.

Temperatures were above normal across the Pacific Northwest and much of the Southwest. New Mexico, Washington, and Oregon had their third, fifth, and seventh warmest summer on record, respectively. Remnants of Hurricane Hilary brought heavy rainfall to southern California and the Great Basin in mid-August and contributed to much-above-normal total summer precipitation across the region.

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Document Date
June 20, 2023
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Quarterly Climate Impacts and Outlook for the Western Region for March–May 2023. Dated June 2023.

Temperatures were generally cool to cold west-wide, with notable cold anomalies along the California coast and in the interior Intermountain West. With few exceptions, spring was wetter than normal in the western U.S., largely owing to a wet March.

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Document Date
March 20, 2023
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Quarterly Climate Impacts and Outlook for the Western Region for December 2022–February 2023. Dated March 2023.

Temperatures were below normal across nearly the entire West with the exception of parts of southeast New Mexico. A series of atmospheric rivers from late December through mid-January brought heavy precipitation to California, the Great Basin, and parts of the northern Rockies where total winter precipitation was record high in some instances.

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Document Date
December 19, 2022
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Quarterly Climate Impacts and Outlook for the Western Region for September–November 2022. Dated December 2022.

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Document Date
September 22, 2022
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Quarterly Climate Impacts and Outlook for the Western Region for June–August 2022. Dated September 2022.

Temperatures were above normal across the entire West with many long-term stations in the top five warmest summers on record. Most of the West saw near-normal or above-normal precipitation this summer.

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Document Date
June 21, 2022
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Quarterly Climate Impacts and Outlook for the Western Region for March–May 2022. Dated June 2022.

Temperatures were below average across the Pacific Northwest, northern California, and the northern Great Basin. Dry conditions persisted across the Southwest with record low spring precipitation in parts of Nevada, California, Utah, Arizona, and New Mexico.