Alert archive / California / High Surf Advisories in 2019

High Surf Advisory 2, NWS San Francisco Bay Area, CA

February 14, 20196 counties in California

NWS San Francisco Bay Area, CA issued this high surf advisory at Feb 14, 2019, 2:39 PM PST for 6 counties in California. It took effect at Feb 15, 2019, 10:00 AM PST. It was in force for 35 hr.

The area

The counties it named.

The facts

Issued: Feb 14, 2019, 2:39 PM PST (22:39 UTC)
In effect from: Feb 15, 2019, 10:00 AM PST
Expired: Feb 16, 2019, 9:00 PM PST
In force: 35 hr
Issued by: NWS San Francisco Bay Area, CA

Counties City and County of San Francisco, CA, Marin County, CA, Monterey County, CA, San Mateo County, CA, Santa Cruz County, CA, Sonoma County, CA

The radar

The San Francisco radar (KMUX), 53 km from the middle of the area, began a volume at 22:43 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 12:00Z, 10.7 hours before the alert went out and 26 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: 271 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 584 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 404 m²/s²
0-3 km storm-relative helicity: 495 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 6.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this high surf advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this high surf advisory went out at Feb 14, 1:09 PM PST, 1 hour 30 minutes earlier.

Area forecast discussion, Feb 14, 1:09 PM PST, 1 hour 30 minutes before

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In the hours before

Local storm report, Feb 14, 11:14 AM PST, 3 hours 25 minutes before

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Local storm report, Feb 14, 11:23 AM PST, 3 hours 16 minutes before

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Local storm report, Feb 14, 11:52 AM PST, 2 hours 47 minutes before

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Local storm report, Feb 14, 11:53 AM PST, 2 hours 46 minutes before

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Local storm report, Feb 14, 11:55 AM PST, 2 hours 44 minutes before

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Local storm report, Feb 14, 12:25 PM PST, 2 hours 14 minutes before

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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 13, 4:46 PM PST	Areal Flood Warning	MTR	Sonoma	27 hr
Feb 13, 5:46 PM PST	River Flood Warning	MTR	Sonoma	49 hr
Feb 13, 5:59 PM PST	Areal Flood Warning	MTR	Marin	3 hr
Feb 13, 6:56 PM PST	Areal Flood Advisory	MTR	City and County of San Francisco, San Mateo	3 hr
Feb 13, 8:46 PM PST	Areal Flood Warning	MTR	Marin	18 hr
Feb 13, 8:46 PM PST	River Flood Warning	MTR	Monterey	21 days
Feb 14, 2:15 AM PST	River Flood Warning	MTR	Santa Clara	14 hr
Feb 14, 3:55 AM PST	Small Craft Advisory for Rough Bar	MTR		14 hr
Feb 14, 4:58 AM PST	Areal Flood Advisory	MTR	Monterey	8 hr
Feb 14, 7:31 AM PST	Areal Flood Warning	MTR	Sonoma	6 hr
Feb 14, 10:37 AM PST	Areal Flood Advisory	MTR	Alameda, Contra Costa, Marin, Napa, City and County of San Francisco, San Mateo and 2 more	3 hr
Feb 14, 2:38 PM PST	Small Craft Advisory	MTR		8 days
Feb 14, 2:39 PM PST	Coastal Flood Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, City and County of San Francisco and 4 more	19 hr

Nearby

High Surf Advisories in California, 2019 Every high surf advisory in 2019

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.