Alert archive / California / Special Weather Statements in 2015

Special Weather Statement, NWS Eureka, CA

December 24, 2015Humboldt County, California

NWS Eureka, CA issued this special weather statement at Dec 24, 2015, 4:28 PM PST for Humboldt County, California. It was in force for 47 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: Dec 24, 2015, 4:28 PM PST (00:28 UTC)
Expired: Dec 24, 2015, 5:15 PM PST
In force: 47 min
Issued by: NWS Eureka, CA

County Humboldt County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 39 km from the middle of the area, began a volume at 00:27 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

Oakland, CA (KOAK), launched 00:00Z, 0.5 hours before the alert went out and 384 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1407 m above ground
0-6 km bulk shear: 98 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Dec 24, 4:06 PM PST, 22 minutes earlier.

Area forecast discussion, Dec 24, 4:06 PM PST, 22 minutes before

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Hazardous weather outlook, Dec 24, 3:36 PM PST, 52 minutes before

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In the hours before

Special weather statement, Dec 24, 3:38 PM PST, 50 minutes before

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Local storm report, Dec 24, 3:40 PM PST, 48 minutes before

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Local storm report, Dec 24, 3:41 PM PST, 47 minutes before

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Local storm report, Dec 24, 3:54 PM PST, 34 minutes before

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Local storm report, Dec 24, 4:04 PM PST, 24 minutes before

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Special weather statement, Dec 24, 4:28 PM PST, 0 minutes before

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The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 24, 4:44 PM PST	Special Marine Warning	EKA		16 min
Dec 24, 5:16 PM PST	Special Weather Statement	EKA	Humboldt	29 min
Dec 24, 6:21 PM PST	Coastal Flood Advisory	EKA		19 hr
Dec 24, 8:01 PM PST	Special Weather Statement	EKA	Del Norte	14 min
Dec 24, 9:26 PM PST	Special Weather Statement	EKA	Humboldt	49 min
Dec 25, 2:31 AM PST	Hazardous Seas Warning	EKA		12 hr
Dec 25, 4:23 AM PST	Hard Freeze Warning	EKA		29 hr

Nearby

Special Weather Statements in California, 2015 Every special weather statement in 2015

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.