Alert archive / California / Special Weather Statements in 2017
Special Weather Statement, NWS Eureka, CA
NWS Eureka, CA issued this special weather statement at Mar 5, 2017, 9:40 AM PST for Humboldt County, California. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 5, 2017, 9:40 AM PST (17:40 UTC)
- Expired
- Mar 5, 2017, 10:15 AM PST
- In force
- 35 min
- Issued by
- NWS Eureka, CA
County Humboldt County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 62 km from the middle of the area, began a volume at 17:40 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 12:00Z, 5.7 hours before the alert went out and 181 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 838 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, 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 this special weather statement went out at Mar 5, 3:48 AM PST, 5 hours 52 minutes earlier.
Area forecast discussion, Mar 5, 3:48 AM PST, 5 hours 52 minutes before
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</html>Hazardous weather outlook, Mar 5, 3:19 AM PST, 6 hours 21 minutes before
Hazardous Weather Outlook National Weather Service Eureka CA 319 AM PST Sun Mar 5 2017 CAZ101-103-061130- Coastal Del Norte-Northern Humboldt Coast- 319 AM PST Sun Mar 5 2017 This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. Small hail is possible today and tonight. Hail accumulating on roadways may result in potentially hazardous driving conditions. Occasional bursts of snow will also be possible to as low as 500 to 1000 feet early this morning and again late this evening and overnight, but is not likely to accumulate at these elevations. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Small hail is possible through early Monday as well. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ102-104>108-061130- Del Norte Interior-Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior-Northern Trinity-Southern Trinity- 319 AM PST Sun Mar 5 2017 ...WINTER STORM WARNING IN EFFECT UNTIL 10 AM PST MONDAY... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. Several inches of snow can be expected at elevations above 1500 feet through the day and into early tomorrow. Snow will be highly variable and periodic as waves of showers move in and out of the region. Snowfall accumulations of 2 to 6 inches are expected for elevations from 1000 to 2000 feet, while 7 to 10 inches are expected above 2000 feet. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Showers will continue through late Monday, with gradually rising snow levels and diminishing coverage through the day and overnight. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ110-111-061130- Northwestern Mendocino Interior-Northeastern Mendocino Interior- 319 AM PST Sun Mar 5 2017 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 AM PST MONDAY... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. Light to moderate snow can be expected at elevations above 1000 feet through the day and into early tomorrow. Snow will be highly variable and periodic as waves of showers move in and out of the region. Snowfall accumulations of 2 to 5 inches are expected for elevations above 1000 feet. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Showers will continue through late Monday, with gradually rising snow levels and diminishing coverage through the day and overnight. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ109-112-113-061130- Mendocino Coast-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 319 AM PST Sun Mar 5 2017 This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. Small hail is possible today and tonight. Hail accumulating on roadways may result in potentially hazardous driving conditions. Bursts of snow can be expected at elevations primarily above 1500 feet today and tonight, with light accumulations possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Small hail and periods of light snow can be expected through at least early Monday, with rising snow levels and diminishing shower coverage and intensity. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Mar 5, 8:51 AM PST, 49 minutes before
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</html>Local storm report, Mar 5, 9:08 AM PST, 32 minutes before
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</html>Local storm report, Mar 5, 9:12 AM PST, 28 minutes before
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</html>Local storm report, Mar 5, 9:18 AM PST, 22 minutes before
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</html>Local storm report, Mar 5, 9:22 AM PST, 18 minutes before
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</html>Special weather statement, Mar 5, 9:40 AM PST, 0 minutes before
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</html>The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 5, 9:34 AM PST | Winter Weather Advisory | EKA | Humboldt, Mendocino | 24 hr |
| Mar 5, 9:56 AM PST | Special Weather Statement | EKA | Humboldt | 34 min |
| Mar 5, 10:49 AM PST | Special Weather Statement | EKA | Humboldt | 26 min |
| Mar 5, 10:55 AM PST | Special Weather Statement | EKA | Humboldt | 35 min |
| Mar 5, 11:09 AM PST | Special Weather Statement | EKA | Humboldt | 36 min |
| Mar 5, 11:23 AM PST | Special Weather Statement | EKA | Humboldt | 37 min |
| Mar 5, 12:07 PM PST | Special Weather Statement | EKA | Del Norte | 23 min |
| Mar 5, 12:21 PM PST | Special Marine Warning | EKA | 24 min | |
| Mar 5, 1:00 PM PST | Special Weather Statement | EKA | Humboldt | 30 min |
| Mar 5, 1:23 PM PST | Special Weather Statement | EKA | Del Norte | 22 min |
| Mar 5, 1:27 PM PST | Special Weather Statement | EKA | 18 min | |
| Mar 5, 1:42 PM PST | Special Weather Statement | EKA | Mendocino | 18 min |
| Mar 5, 1:47 PM PST | Special Weather Statement | EKA | Del Norte | 13 min |
| Mar 5, 2:52 PM PST | Special Weather Statement | EKA | Del Norte | 23 min |
Nearby
Special Weather Statements in California, 2017Every special weather statement in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.