Alert archive / California / Areal Flood Warnings in 2017
Areal Flood Warning 21, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this areal flood warning at Jan 21, 2017, 8:46 AM PST for Monterey County, California. It was in force for 16 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jan 21, 2017, 8:46 AM PST (16:46 UTC)
- Expired
- Jan 22, 2017, 12:45 AM PST
- In force
- 16 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), 47 km from the middle of the area, began a volume at 16:47 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, 4.8 hours before the alert went out and 116 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
- 655 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
965 WGUS46 KMTR 211646 FLWMTR BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service San Francisco CA 846 AM PST SAT JAN 21 2017 CAC053-211845- /O.NEW.KMTR.FA.W.0021.170121T1646Z-170121T1845Z/ /00000.0.MC.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Monterey CA- 846 AM PST SAT JAN 21 2017 The National Weather Service in The San Francisco Bay Area has issued a * Flood Warning for Small Streams in... Northwestern Monterey County in central California... * Until 1045 AM PST * At 843 AM PST, the real-time stream gage in the Salinas River lagoon is reporting continued rise in water level, and is now above 6.0 feet. Active flooding begins at 6.0 feet. * Flooding will remain over mainly rural areas of northwestern Monterey County. * Flooding will continue for the next couple of hours until the tide recedes. * The City of Marina WILL NOT be flooded, but local farmland and rural and primitive roads on the lower floodplain west of Highway 1 should be avoided. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3675 12177 3672 12180 3676 12180 $$
2 follow-up statements
727 WGUS46 KMTR 211840 FLWMTR BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service San Francisco CA 1040 AM PST SAT JAN 21 2017 CAC053-212045- /O.EXT.KMTR.FA.W.0021.000000T0000Z-170121T2045Z/ /00000.0.MC.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Monterey CA- 1040 AM PST SAT JAN 21 2017 The National Weather Service in The San Francisco Bay Area has extended the * Flood Warning for Small Streams in... Northwestern Monterey County in central California... * Until 1245 PM PST * At 1037 AM PST, reporting gauges indicate the real-time stream gage in the Salinas River lagoon is reporting water level above flood stage. The current stage is 6.31 feet and active flooding begins at 6.0 feet. * Flooding will remain over mainly rural areas of northwestern Monterey County. * Flooding will continue for the next couple of hours until the tide recedes. * The City of Marina WILL NOT be flooded, but local farmland and rural and primitive roads on the lower floodplain west of Highway 1 should be avoided. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3675 12177 3672 12180 3676 12180 $$
896 WGUS46 KMTR 212039 FLWMTR BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service San Francisco CA 1239 PM PST SAT JAN 21 2017 CAC053-220845- /O.EXT.KMTR.FA.W.0021.000000T0000Z-170122T0845Z/ /00000.0.MC.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Monterey CA- 1239 PM PST SAT JAN 21 2017 The National Weather Service in The San Francisco Bay Area has extended the * Flood Warning for Small Streams in... Northwestern Monterey County in central California... * Until 1245 AM PST Sunday * At 1236 PM PST, the real-time stream gage in the Salinas River lagoon continues to report water level above flood stage. The current stage is 6.43 feet and active flooding begins at 6.0 feet. * Flooding will remain over mainly rural areas of northwestern Monterey County. * Flooding is due to surge from very high surf, and will continue through the evening and into early Sunday morning when the swell starts to decrease. There will also be fluctuations due to tidal influence. * The City of Marina WILL NOT be flooded, but local farmland and rural and primitive roads on the lower floodplain west of Highway 1 should be avoided. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3675 12177 3672 12180 3676 12180 $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 4:12 AM PST | High Wind Warning | MTR | Marin, Monterey, San Benito, City and County of San Francisco, San Mateo, Santa Clara and 2 more | 29 hr |
| Jan 21, 4:12 AM PST | Wind Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Mateo and 2 more | 29 hr |
| Jan 21, 4:53 AM PST | Gale Warning | MTR | 28 hr | |
| Jan 21, 4:53 AM PST | Storm Warning | MTR | 24 hr | |
| Jan 21, 2:27 PM PST | Small Craft Advisory | MTR | 7 hr | |
| Jan 21, 2:27 PM PST | Small Craft Advisory | MTR | 3 days |
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.