Heavy Rain, Mendocino
- When
- January 16, 3:00 AM PST to January 21, 8:08 AM PST
- Where
- Mendocino County, 4.38 mi SE of Boonville
- Reported by
- Trained Spotter
- Coordinates
- 38.950, -123.320
Storm total rainfall of 6.04 inches since January 16, 2019.
Flooding and Heavy Rain in California, January 16 to 21, 2019
Moist onshore flow from the Pacific aided in heavy rainfall over northwest California during January 19th and 20th. A cold upper trough finally moved onshore during the 21st resulting in a period of mountain snow.
Where it happened
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 7
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS EKA wrote it up.
Moist onshore flow from the Pacific aided in heavy rainfall over northwest California during January 19th and 20th. A cold upper trough finally moved onshore during the 21st resulting in a period of mountain snow.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Eureka, CA wrote its last area forecast discussion before the first event at Jan 15, 3:08 PM PST, 11 hours 52 minutes earlier.
Area forecast discussion, Jan 15, 3:08 PM PST, 11 hours 52 minutes before
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</html>Hazardous weather outlook, Jan 15, 9:26 AM PST, 17 hours 34 minutes before
Hazardous Weather Outlook National Weather Service Eureka CA 926 AM PST Tue Jan 15 2019 CAZ106>108-110>113-161730- Southern Humboldt Interior-Northern Trinity-Southern Trinity- Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 926 AM PST Tue Jan 15 2019 ...WIND ADVISORY IN EFFECT FROM 1 PM TO 10 PM PST WEDNESDAY... ...FLOOD WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY AFTERNOON... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected through tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A Wind Advisory is currently in effect. A Flood Watch is currently in effect. A Wind Advisory is in effect for exposed high terrain of northeast Mendocino and Trinity county above 2,500 feet, and for the remainder of inland northwest California above 1,500 feet. Snow levels around 4,000 feet over Trinity County with showery precipitation may result in locally heavy snowfall over Scott Mountain Summit on Highway 3 today and tonight. A large, powerful storm system will bring strong winds and heavy rain Wednesday afternoon into Wednesday night. Snow levels will fall to around 4,000 feet on Thursday with more snowfall for Scott Mountain summit, and perhaps some of the higher passes on Highway 36. Heavy rain Wednesday night will result in sharp rises on main stem rivers as well as smaller streams and creeks through Thursday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. For further details please refer to NOAA Weather Radio or weather.gov/eureka. CAZ101-103-161730- Coastal Del Norte-Northern Humboldt Coast- 926 AM PST Tue Jan 15 2019 This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected through tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A large, powerful storm system will bring gusty winds and heavy rain Wednesday afternoon into Wednesday night. High surf will likely result in hazardous beach conditions and possibly minor coastal flooding by Thursday. A slight chance of thunderstorms will be possible from Wednesday evening through Thursday afternoon. Small hail will also be possible from Wednesday night through Thursday afternoon, with at least heavy downpours likely with stronger showers. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. For further details please refer to NOAA Weather Radio or weather.gov/eureka. CAZ102-105-161730- Del Norte Interior-Northern Humboldt Interior- 926 AM PST Tue Jan 15 2019 ...WIND ADVISORY IN EFFECT FROM 1 PM TO 10 PM PST WEDNESDAY... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A Wind Advisory is currently in effect. A Wind Advisory is in effect for exposed high terrain of northeast Mendocino and Trinity county above 2,500 feet, and for the remainder of inland northwest California above 1,500 feet. Snow levels around 4,000 feet over Trinity County with showery precipitation may result in locally heavy snowfall over Scott Mountain Summit on Highway 3 today and tonight. A large, powerful storm system will bring strong winds and heavy rain Wednesday afternoon into Wednesday night. Snow levels will fall to around 4,000 feet on Thursday with more snowfall for Scott Mountain summit, and perhaps some of the higher passes on Highway 36. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. For further details please refer to NOAA Weather Radio or weather.gov/eureka. CAZ104-109-161730- Southwestern Humboldt-Mendocino Coast- 926 AM PST Tue Jan 15 2019 ...FLOOD WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY AFTERNOON... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A Flood Watch is currently in effect. A large, powerful storm system will bring gusty winds and heavy rain Wednesday afternoon into Wednesday night. High surf will likely result in hazardous beach conditions and possibly minor coastal flooding by Thursday. A slight chance of thunderstorms will be possible from Wednesday evening through Thursday afternoon. Small hail will also be possible from Wednesday night through Thursday afternoon, with at least heavy downpours likely with stronger showers. Heavy rain Wednesday night will result in sharp rises on main stem rivers as well as smaller streams and creeks through Thursday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. For further details please refer to NOAA Weather Radio or weather.gov/eureka.
The radar
The national radar mosaic for the moment the first event began.
Event by event
3 flood, 2 heavy rain, 2 winter weather. Local standard time, as filed.
Winter Weather, Northwestern Mendocino Interior
- When
- January 20, 2:00 AM PST to 3:50 PM PST
- Where
- Northwestern Mendocino Interior forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 39.434, -123.432 (the zone’s center; the record gives no point)
A half inch of snow at an elevation of 3,750 feet.
Flood, Humboldt
- When
- January 20, 2:00 AM PST to 2:00 PM PST
- Where
- Humboldt County, 2.09 mi E of Fields Lndg to 2.01 mi E of Fields Lndg
- Cause
- Heavy Rain
- Reported by
- Public
- Coordinates
- 40.720, -124.180
Over a foot of deep and rushing water at Berta Road near the Elk River.
Flood, Humboldt
- When
- January 20, 2:00 AM PST to 12:30 PM PST
- Where
- Humboldt County, Beatrice to 0.2 mi N of Beatrice
- Cause
- Heavy Rain
- Reported by
- Department of Highways
- Coordinates
- 40.670, -124.200
Southbound Highway 101 off ramp connecting to Hookton Road over-crossing was closed due to flooding.
Flood, Humboldt
- When
- January 20, 2:00 AM PST to 3:40 PM PST
- Where
- Humboldt County, 0.46 mi N of Bayside to 0.49 mi N of Bayside
- Cause
- Heavy Rain
- Reported by
- Law Enforcement
- Coordinates
- 40.837, -124.071
Old Arcata Road at Graham Road was flooded.
Winter Weather, Northwestern Mendocino Interior
- When
- January 20, 2:00 AM PST to 9:00 PM PST
- Where
- Northwestern Mendocino Interior forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 39.434, -123.432 (the zone’s center; the record gives no point)
Three inches of snow occurred at an elevation of 3,750 feet.
Heavy Rain, Trinity
- When
- January 20, 5:00 AM PST
- Where
- Trinity County, 2.51 mi NNW of Junction City to 2.2 mi NNW of Junction City
- Reported by
- Department of Highways
- Coordinates
- 40.762, -123.072
Highway 299 had one way traffic control in effect due to a rock slide occurring across the highway.
What these are
- Heavy Rain
- Rainfall totals unusual for the place and season that did not produce a flood.
- Winter Weather
- Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Flash Flooding and Debris Flows in California, January 16 to 17, 2019
- Tornado and Debris Flows in California, January 16 to 17, 2019
- Flooding and High Wind in California, January 16 to 18, 2019
- Heavy Snow and High Wind in California, January 16 to 18, 2019
- Heavy Snow and High Wind in Nevada, January 16 to 18, 2019
- Winter Storm and Heavy Snow in Utah, January 16 to 18, 2019
- Flooding and High Surf in California, January 16 to 19, 2019
- Winter Storm and Heavy Snow in Idaho, January 16 to 18, 2019
- High Wind in Wyoming, January 16, 2019
- High Wind in Oregon, January 16 to 17, 2019
- Winter Weather in West Virginia, January 16, 2019
- Dense Fog in Arizona, January 16, 2019
More
Every storm in California in 2019Every state in 2019This day in weather historyWarnings in California, January 2019
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 802203, 802194, 802195, 802196, 802199, 802204, 804177.