Alert archive / California / High Wind Watches in 2024
High Wind Watch 1, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this high wind watch at Dec 12, 2024, 1:07 AM PST for 7 counties in California. It took effect at Dec 13, 2024, 7:00 PM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 12, 2024, 1:07 AM PST (09:07 UTC)
- In effect from
- Dec 13, 2024, 7:00 PM PST
- Expired
- Dec 13, 2024, 12:59 AM PST
- In force
- 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 Clara County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 45 km from the middle of the area, began a volume at 09:05 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
Vandenberg AFB, CA (KVBG), launched 00:00Z, 9.1 hours before the alert went out and 341 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3666 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high wind watch 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 wind watch went out at Dec 11, 9:32 PM PST, 3 hours 35 minutes earlier.
Area forecast discussion, Dec 11, 9:32 PM PST, 3 hours 35 minutes before
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</html>The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 12, 2:27 AM PST | Gale Warning | MTR | 55 hr | |
| Dec 12, 3:59 AM PST | Flood Watch | MTR | Marin, Monterey, Napa, Sonoma | 3 days |
| Dec 12, 2:32 PM PST | Small Craft Advisory | MTR | 13 hr |
Nearby
High Wind Watches in California, 2024Every high wind watch in 2024
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.