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The Dexes / Heavy Rain / 793931

Eventdex · Heavy Rain

ORANGE

793931 · 33.676, -117.868

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The record

Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.

Event typeevent_typeHeavy Rain
NOAA NCEI event IDncei_event_id793,931
Episode IDepisode_id132,679
Begin UTCbegin_utc2018-12-06T18:00:00+00:00
End UTCend_utc2018-12-06T21:00:00+00:00
StatestateCALIFORNIA
County/zone typecz_typeC
County/zone namecz_nameORANGE
Latitudelat33.676
Longitudelon-117.868
End latitudeend_lat33.676
End longitudeend_lon-117.868
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property0.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourceASOS
Episode narrativeepisode_narrativeA moisture plume with a weak atmospheric river arrived on December 5th and brought rain to the region. On December 6th, a strong closed upper level low pressure brought an unstable air mass into Southern California with showers and thunderstorms, especially Orange and San Diego Counties. Rainfall of 1 inch per hour amounts occurred in Costa Mesa and downtown San Diego as well as adjacent cities. The main storm system on December 6th brought widespread rain to the entire region. All mountains and the coast and valleys areas received 1-3 inches and some spots receiving over 4 of rainfall over higher terrain. The most significant mud and debris flows occurred at recent Holy burn scar areas, and many reports of flash flooding across the region. Another strong cold front brought widespread rain on Christmas Day though the impacts were minimal. Snow fell as low as 4000 feet with mountains receiving 1 to 4 inches of snow including the San Diego mountains. Burns Canyon in the high deserts of San Bernardino County had a wind gust to 70 mph.
Event narrativeevent_narrativeJohn Wayne Airport reported 2.56 inches of rainfall in about 2 hours on December 6th. This is a 1 in 100 year return interval. Cars in nearby Costa Mesa were seen completely submerged completely or stalled in deep water up to the windows.
Yearyear2,018

Provenance

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Storage: spine