Alert archive / California / Flash Flood Warnings in 2016

Flash Flood Warning 4, NWS Los Angeles, CA

January 6, 2016Ventura County, California

NWS Los Angeles, CA issued this flash flood warning at Jan 6, 2016, 10:19 AM PST for Ventura County, California. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jan 6, 2016, 10:19 AM PST (18:19 UTC)
Expired
Jan 6, 2016, 1:15 PM PST
In force
3 hr
Issued by
NWS Los Angeles, CA
Area
Storm-based polygon
Flood severity
None

County Ventura County, CA

The radar

The Los Angeles radar (KVTX), 12 km from the middle of the area, began a volume at 18:22 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.

What was reported inside it

TimeReportWhereRemark
Jan 6, 12:30 PM PSTFLASH FLOODSanta Paula, CACARL DOG RESCUE FLOODED FROM HEAVY RAIN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Vandenberg AFB, CA (KVBG), launched 12:00Z, 6.3 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.

Skew-T log-pSkew-T log-p diagram, Vandenberg AFB, CA at 12:00Z on 2016-01-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Vandenberg AFB, CA at 12:00Z on 2016-01-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
4 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
757 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
333 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

374 
WGUS56 KLOX 061819
FFWLOX
CAC111-062115-
/O.NEW.KLOX.FF.W.0004.160106T1819Z-160106T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OXNARD CA
1019 AM PST WED JAN 6 2016

THE NATIONAL WEATHER SERVICE IN OXNARD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL VENTURA COUNTY IN SOUTHWESTERN CALIFORNIA...

* UNTIL 115 PM PST

* AT 1017 AM PST...HEAVY RAIN FALLING ACROSS THE WARNED AREA...WITH
  RAINFALL RATES EXCEED ONE INCH PER HOUR. FLASH FLOODING IS LIKELY.

* SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE... WESTERN
  VENTURA...FILLMORE...OJAI... SANTA PAULA...RINCON POINT... LAKE
  CASITAS...PIRU.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT ENTER OR CROSS FLOWING WATER OR WATER OF UNKNOWN DEPTH. 

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3427 11928 3428 11931 3432 11937 3432 11939
      3436 11943 3438 11947 3437 11948 3438 11948
      3440 11945 3442 11946 3444 11944 3450 11923
      3450 11878 3443 11874

$$

KITTELL
3 follow-up statements
183 
WGUS76 KLOX 061846
FFSLOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OXNARD CA
1046 AM PST WED JAN 6 2016

CAC111-062115-
/O.CON.KLOX.FF.W.0004.000000T0000Z-160106T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VENTURA CA-
1046 AM PST WED JAN 6 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 PM PST FOR
CENTRAL VENTURA COUNTY...

AT 1037 AM PST...HEAVY RAIN IS OCCURRING...WITH RAINFALL RATES OF
0.75 TO 1.50 INCHES PER HOUR. RAIN THIS HEAVY CAN LEAD TO DANGEROUS
FLASH FLOODING OF ANY AREA...INCLUDING BUT NOT LIMITED TO THE
SOLIMAR BURN AREA. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...SOLIMAR BURN
AREA...HIGHWAY 101...WESTERN VENTURA...FILLMORE...OJAI...SANTA
PAULA...RINCON...CASITAS...AND PIRU.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF DRIVING ON HIGHWAY 101 BETWEEN VENTURA COUNTY LINE AND HIGHWAY 33
BE PREPARED FOR THE POTENTIAL OF FAST MOVING WATER WITH MUD AND
DEBRIS MOVING ACROSS THE HIGHWAY. 

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 3427 11928 3428 11931 3432 11937 3432 11939
      3436 11943 3438 11947 3437 11948 3438 11948
      3440 11945 3442 11946 3444 11944 3450 11923
      3450 11878 3443 11874

$$

KITTELL
139 
WGUS76 KLOX 062015
FFSLOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OXNARD CA
1206 PM PST WED JAN 6 2016

CAC111-062115-
/O.CON.KLOX.FF.W.0004.000000T0000Z-160106T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VENTURA CA-
1206 PM PST WED JAN 6 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 PM PST FOR
CENTRAL VENTURA COUNTY...

AT 1205 PM PST...DOPPLER RADAR INDICATED ANOTHER AREA OF HEAVY
RAINFALL WITH EMBEDDED THUNDERSTORMS MOVING INTO WESTERN VENTURA
COUNTY AND EXTENDING OFFSHORE INTO THE SANTA BARBARA CHANNEL.
THESE STORMS WILL LIKELY PRODUCE HEAVY DOWNPOURS...WITH RAINFALL
RATES OF ONE HALF TO ONE INCH PER HOUR...CAPABLE OF PRODUCING
ADDITIONAL FLASH FLOODING AND DEBRIS FLOWS. THE SOLIMAR BURN
AREA SHOULD SEE HEAVY DOWNPOURS AT TIMES THROUGH 115 PM.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WESTERN VENTURA...FILLMORE...OJAI...SANTA PAULA...RINCON POINT...LAKE
CASITAS...MEINERS OAKS...SOLIMAR BEACH...SEACLIFF...PIRU AND LAKE
PIRU.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING FOR A RECENT BURN AREA MEANS THAT FLOODING AND
DEBRIS FLOWS ARE IMMINENT OR OCCURRING. RESIDENTS LIVING IN OR
IMMEDIATELY DOWNSTREAM SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT
LIFE AND PROPERTY. QUICKLY MOVE AWAY FROM THE BURN AREA ONLY IF IT
IS SAFE TO DO SO...OTHERWISE SHELTER IN PLACE AND MOVE TO A SECOND
STORY OR THE HIGHEST LOCATION IN YOUR HOME TO STAY OUT OF THE PATH
OF FAST-MOVING WATER AND DEBRIS FLOWS.

&&

LAT...LON 3427 11928 3428 11931 3432 11937 3432 11939
      3436 11943 3438 11947 3437 11948 3438 11948
      3440 11945 3442 11946 3444 11944 3450 11923
      3450 11878 3443 11874

$$

GOMBERG/LABER
657 
WGUS76 KLOX 062120
FFSLOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OXNARD CA
115 PM PST WED JAN 6 2016

CAC111-062125-
/O.EXP.KLOX.FF.W.0004.000000T0000Z-160106T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VENTURA CA-
115 PM PST WED JAN 6 2016

...THE FLASH FLOOD WARNING FOR CENTRAL VENTURA COUNTY HAS EXPIRED...

AS OF 115 PM...THE WIDESPREAD HEAVY RAIN HAS ENDED ACROSS THE
WARNING AREA...ALLOWING THE FLASH FLOOD WARNING TO EXPIRE. HOWEVER
THERE WILL STILL BE BRIEF HEAVY SHOWERS THROUGH THE AFTERNOON. A
FLOOD ADVISORY REMAINS IN EFFECT FOR VENTURA COUNTY FOR CONTINUED
ROADWAY FLOODING. ADDITIONAL HEAVY SHOWERS AND THUNDERSTORMS REMAIN
OFFSHORE...AND MAY REQUIRE ADDITIONAL FLASH FLOOD WARNINGS FOR
VENTURA COUNTY LATER THIS AFTERNOON AND EVENING.

LAT...LON 3427 11928 3428 11931 3432 11937 3432 11939
      3436 11943 3438 11947 3437 11948 3438 11948
      3440 11945 3442 11946 3444 11944 3450 11923
      3450 11878 3443 11874

$$

GOMBERG

The office that day

Everything else NWS Los Angeles, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 5, 6:05 PM PSTHigh Surf WarningLOXLos Angeles58 hr
Jan 5, 7:45 PM PSTWind AdvisoryLOXLos Angeles, Santa Barbara28 hr
Jan 6, 6:05 AM PSTSpecial Weather StatementLOXSan Luis Obispo55 min
Jan 6, 6:11 AM PSTSpecial Marine WarningLOX64 min
Jan 6, 7:08 AM PSTSpecial Weather StatementLOXSan Luis Obispo67 min
Jan 6, 7:35 AM PSTAreal Flood AdvisoryLOXSanta Barbara3 hr
Jan 6, 8:07 AM PSTFlash Flood WarningLOXVentura3 hr
Jan 6, 8:43 AM PSTSpecial Marine WarningLOX47 min
Jan 6, 8:57 AM PSTSpecial Weather StatementLOXSanta Barbara33 min
Jan 6, 9:16 AM PSTAreal Flood AdvisoryLOXVentura3 hr
Jan 6, 9:33 AM PSTSpecial Marine WarningLOX27 min
Jan 6, 10:31 AM PSTSevere Thunderstorm WarningLOXLos Angeles, Ventura29 min
Jan 6, 11:06 AM PSTFlash Flood WarningLOXLos Angeles3 hr
Jan 6, 11:18 AM PSTAreal Flood AdvisoryLOXLos Angeles8 hr
Jan 6, 11:35 AM PSTAreal Flood AdvisoryLOXSanta Barbara3 hr
Jan 6, 12:12 PM PSTSpecial Weather StatementLOXLos Angeles33 min
Jan 6, 12:23 PM PSTAreal Flood AdvisoryLOXVentura6 hr
Jan 6, 12:23 PM PSTSpecial Weather StatementLOX22 min
Jan 6, 12:38 PM PSTFlash Flood WarningLOXLos Angeles6 hr
Jan 6, 1:10 PM PSTSpecial Marine WarningLOX65 min
Jan 6, 2:08 PM PSTSpecial Marine WarningLOX22 min
Jan 6, 3:04 PM PSTSpecial Marine WarningLOX41 min
Jan 6, 3:28 PM PSTSpecial Weather StatementLOXVentura32 min
Jan 6, 3:35 PM PSTSpecial Weather StatementLOXVentura55 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.