Alert archive / California / Flash Flood Warnings in 1986
Flash Flood Warning 2, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this flash flood warning at Feb 14, 1986, 11:30 PM PST for Napa County, California. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Feb 14, 1986, 11:30 PM PST (07:30 UTC)
- Expired
- Feb 15, 1986, 8:00 AM PST
- In force
- 9 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Whole counties
County Napa County, CA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Oakland, CA (KOAK), launched 00:00Z, 7.5 hours before the alert went out and 87 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
- 209 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 794 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 14, 11:30 PM PST | Flash Flood Warning | MTR | Marin, Sonoma | 9 hr |
Nearby
Flash Flood Warnings in California, 1986Every flash flood warning in 1986
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.