Alert archive / California / Freeze Warnings in 2025
Freeze Warning 7, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this freeze warning at Feb 7, 2025, 12:25 AM PST for 6 counties in California. It took effect at Feb 8, 2025, 1:00 AM PST. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 7, 2025, 12:25 AM PST (08:25 UTC)
- In effect from
- Feb 8, 2025, 1:00 AM PST
- Expired
- Feb 8, 2025, 9:00 AM PST
- In force
- 8 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Marin County, CA, Monterey County, CA, Napa County, CA, San Benito County, CA, Santa Clara County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 43 km from the middle of the area, began a volume at 08:24 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, 8.4 hours before the alert went out and 339 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
- 61 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 517 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this freeze warning 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 freeze warning went out at Feb 6, 2:44 PM PST, 9 hours 41 minutes earlier.
Area forecast discussion, Feb 6, 2:44 PM PST, 9 hours 41 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 |
|---|---|---|---|---|
| Feb 6, 4:40 PM PST | Areal Flood Advisory | MTR | Monterey | 5 hr |
| Feb 6, 8:37 PM PST | Small Craft Advisory | MTR | 5 days | |
| Feb 6, 9:55 PM PST | Areal Flood Advisory | MTR | Sonoma | 2 hr |
| Feb 6, 11:55 PM PST | Areal Flood Advisory | MTR | Sonoma | 36 hr |
| Feb 7, 12:25 AM PST | Frost Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 33 hr |
| Feb 7, 2:42 AM PST | Small Craft Advisory | MTR | 48 hr | |
| Feb 7, 11:51 AM PST | Areal Flood Advisory | MTR | San Mateo | 114 min |
Nearby
Freeze Warnings in California, 2025Every freeze warning in 2025
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.