Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 15, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this flash flood warning at Oct 16, 2016, 10:05 AM PDT for Santa Clara County, Santa Cruz County, California. 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 outline as issued.
The facts
- Issued
- Oct 16, 2016, 10:05 AM PDT (17:05 UTC)
- Expired
- Oct 16, 2016, 6:00 PM PDT
- In force
- 8 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Santa Clara County, CA, Santa Cruz County, CA
The radar
The San Francisco radar (KMUX), 9 km from the middle of the area, began a volume at 17:06 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, 5.1 hours before the alert went out and 76 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
- 3 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 592 m above ground
- 0-6 km bulk shear
- 87 kt
- 0-1 km storm-relative helicity
- 226 m²/s²
- 0-3 km storm-relative helicity
- 347 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
451
WGUS56 KMTR 161705
FFWMTR
CAC085-087-170100-
/O.NEW.KMTR.FF.W.0015.161016T1705Z-161017T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1005 AM PDT SUN OCT 16 2016
THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS ISSUED
A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN SANTA CLARA COUNTY IN NORTHERN CALIFORNIA...
NORTHEASTERN SANTA CRUZ COUNTY IN NORTHERN CALIFORNIA...
SPECIFICALLY THE LOMA BURN AREA...
* UNTIL 600 PM PDT SUNDAY
* AT 1002 AM PDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
MODERATE TO HEAVY RAIN CONTINUE TO FALL ACROSS THE WARNED AREA.
FLASH FLOODING IS POSSIBLE OVER THE WARNED AREA.
EXCESSIVE RAINFALL OVER THE BURN SCAR WILL LIKELY RESULT IN DEBRIS
FLOWS. DEBRIS FLOWS CAN CONSIST OF ROCK...MUD...VEGETATION AND OTHER
LOOSE MATERIALS.
ADDITIONAL RAINFALL AMOUNTS OF UP TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE AWAY FROM RECENTLY BURNED AREAS. LIFE-THREATENING FLOODING OF
CREEKS...ROADS AND NORMALLY DRY ARROYOS IS LIKELY. THE HEAVY RAINS
WILL LIKELY TRIGGER ROCKSLIDES...MUDSLIDES AND DEBRIS FLOWS IN STEEP
TERRAIN...ESPECIALLY IN AND AROUND THESE AREAS.
&&
LAT...LON 3716 12177 3711 12176 3706 12178 3710 12189
3717 12184
$$The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 16, 7:48 AM PDT | Areal Flood Advisory | MTR | Santa Clara, Santa Cruz | 6 hr |
| Oct 16, 9:58 AM PDT | Flash Flood Warning | MTR | Monterey | 8 hr |
Nearby
Flash Flood Warnings in California, 2016Every flash flood warning in 2016
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.