Alert archive / California / Areal Flood Warnings in 2017
Areal Flood Warning 45, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this areal flood warning at Feb 23, 2017, 1:20 PM PST for Monterey County, California. It was in force for 9 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 23, 2017, 1:20 PM PST (21:20 UTC)
- Expired
- Feb 23, 2017, 10:15 PM PST
- In force
- 9 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Storm-based polygon
- Flood severity
- None
County Monterey County, CA
The radar
The San Francisco radar (KMUX), 115 km from the middle of the area, began a volume at 21:26 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, 9.3 hours before the alert went out and 184 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
- 1618 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood 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 areal flood warning went out at Feb 23, 9:40 AM PST, 3 hours 40 minutes earlier.
Area forecast discussion, Feb 23, 9:40 AM PST, 3 hours 40 minutes before
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</html>Hazardous weather outlook, Feb 23, 12:10 PM PST, 1 hour 10 minutes before
Hazardous Weather Outlook National Weather Service San Francisco CA 1210 PM PST Thu Feb 23 2017 CAZ006-505>513-516>518-528>530-242015- San Francisco- Coastal North Bay Including Point Reyes National Seashore- North Bay Interior Valleys-North Bay Mountains- San Francisco Bay Shoreline-San Francisco Peninsula Coast- East Bay Interior Valleys-East Bay Hills and the Diablo Range- Santa Cruz Mountains-Santa Clara Valley Including San Jose- Southern Salinas Valley/Arroyo Seco and Lake San Antonio- Santa Lucia Mountains and Los Padres National Forest- Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park- Northern Salinas Valley/Hollister Valley and Carmel Valley- Northern Monterey Bay-Southern Monterey Bay and Big Sur Coast- 1210 PM PST Thu Feb 23 2017 This Hazardous Weather Outlook is for portions of western California. .DAY ONE...This Afternoon and Tonight Chilly overnight temperatures can be expected tonight along with patchy frost. .DAYS TWO THROUGH SEVEN...Friday through Wednesday A system will bring showers to our region Saturday into Monday, although amounts should generally be light. Snow levels will be low, so locations above 3000 feet could see several inches of accumulation.
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 8:16 PM PST | Areal Flood Warning | MTR | Sonoma | 12 hr |
| Feb 23, 3:39 PM PST | Flood Watch | MTR | Monterey, San Benito | 18 hr |
Nearby
Areal Flood Warnings in California, 2017Every areal flood warning in 2017
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.