Alert archive / California / Frost Advisories in 2024
Frost Advisory 5, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this frost advisory at Jan 9, 2024, 11:01 AM PST for Monterey County, San Benito County, California. It took effect at Jan 10, 2024, 2:00 AM PST. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jan 9, 2024, 11:01 AM PST (19:01 UTC)
- In effect from
- Jan 10, 2024, 2:00 AM PST
- Expired
- Jan 10, 2024, 10:00 AM PST
- In force
- 8 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Monterey County, CA, San Benito County, CA
The radar
The San Francisco radar (KMUX), 103 km from the middle of the area, began a volume at 19:05 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 12:00Z, 7.0 hours before the alert went out and 198 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
- 2110 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -57 m²/s²
- 0-3 km storm-relative helicity
- -41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this frost 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 frost advisory went out at Jan 9, 9:43 AM PST, 1 hour 18 minutes earlier.
Area forecast discussion, Jan 9, 9:43 AM PST, 1 hour 18 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 |
|---|---|---|---|---|
| Jan 9, 2:43 AM PST | Gale Watch | MTR | 18 hr | |
| Jan 9, 2:43 AM PST | Small Craft Advisory | MTR | 66 hr | |
| Jan 9, 11:08 AM PST | Coastal Flood Advisory | MTR | Alameda, Contra Costa, Marin, Napa, City and County of San Francisco, San Mateo and 2 more | 24 hr |
Nearby
Frost Advisories in California, 2024Every frost advisory 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.