Alert archive / California / Flash Flood Warnings in 2015

Flash Flood Warning 85, NWS Las Vegas, NV

August 1, 2015Inyo County, California

NWS Las Vegas, NV issued this flash flood warning at Aug 1, 2015, 3:53 PM PDT for Inyo County, California. It was in force for 5 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
Aug 1, 2015, 3:53 PM PDT (22:53 UTC)
Expired
Aug 1, 2015, 8:45 PM PDT
In force
5 hr
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

County Inyo County, CA

The radar

The San Joaquin Valley radar (KHNX), 170 km from the middle of the area, began a volume at 22:55 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
Aug 1, 6:00 PM PDTFLASH FLOOD10 Ne Big Pine, CACHP REPORTED WATER OVER THE HIGHWAY IN THE NARROWS SECTION OF CA 168. FACEBOOK PHOTOS FROM THE PUBLIC CONFIRM WATER, MUD, AND ROCK OVER THE ROADWAY.

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

The nearest sounding before it

Las Vegas, NV (KVEF), launched 12:00Z, 10.9 hours before the alert went out and 249 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, Las Vegas, NV at 12:00Z on 2015-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 195 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, Las Vegas, NV at 12:00Z on 2015-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939Sfc1 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
195 J/kg
Mixed-layer CIN
-235 J/kg
Mixed-layer LCL
2766 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

239 
WGUS55 KVEF 012253
FFWVEF
CAC027-020145-
/O.NEW.KVEF.FF.W.0085.150801T2253Z-150802T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
353 PM PDT SAT AUG 1 2015

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN INYO COUNTY IN SOUTH CENTRAL CALIFORNIA...

* UNTIL 645 PM PDT
    
* AT 351 PM PDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING 
  HEAVY RAIN SOUTH OF WESTGARD PASS. THE RAIN IS MOVING NORTH AT 10 
  MPH. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...GRANDVIEW 
  CAMPGROUND....WAUCOBA ROAD...HIGHWAY 168 BETWEEN ZURICH AND 
  WESTGARD PASS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN! REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

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

&&

LAT...LON 3738 11808 3707 11792 3702 11818 3734 11833

$$

OUTLER
3 follow-up statements
206 
WGUS75 KVEF 020032
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
532 PM PDT SAT AUG 1 2015

CAC027-020145-
/O.CON.KVEF.FF.W.0085.000000T0000Z-150802T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
532 PM PDT SAT AUG 1 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM PDT FOR
NORTHWESTERN INYO COUNTY...

AT 529 PM PDT...THUNDERSTORMS CONTINUED TO REDEVELOP SOUTH OF 
WESTGARD PASS. HEAVY PRECIPITATION HAS BEEN OCCURRING OVER AN HOUR 
NOW AND RAPID FLASH FLOODING WILL CONTINUE. WAUCOBA ROAD IS LIKELY 
IMPASSABLE IN NUMEROUS LOCATIONS DUE TO FLOODING. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WAUCOBA ROAD....HIGHWAY 168 BETWEEN ZURICH AND WESTGARD PASS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN! REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

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

&&

LAT...LON 3738 11808 3707 11792 3702 11818 3734 11833

$$

OUTLER
097 
WGUS55 KVEF 020130
FFWVEF
CAC027-020345-
/O.EXT.KVEF.FF.W.0085.000000T0000Z-150802T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
630 PM PDT SAT AUG 1 2015

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN INYO COUNTY IN SOUTH CENTRAL CALIFORNIA...

* UNTIL 845 PM PDT
    
* AT 625 PM PDT...THUNDERSTORMS CONTINUED TO IMPACT THE WAUCOBA ROAD 
  AREA EAST OF BIG PINE...AND WATER HAS BEEN REPORTED FLOWING OVER 
  THE ROADWAY ALONG PARTS OF HIGHWAY 168. WITH ADDITIONAL 
  THUNDERSTORMS CONTINUING IN THE AREA...THE FLASH FLOOD WARNING HAS 
  BEEN EXTENDED. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WAUCOBA ROAD...WESTGARD PASS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN! REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

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

&&

LAT...LON 3738 11808 3707 11792 3702 11818 3734 11833

$$

OUTLER
014 
WGUS75 KVEF 020342
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
842 PM PDT SAT AUG 1 2015

CAC027-020348-
/O.EXP.KVEF.FF.W.0085.000000T0000Z-150802T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
842 PM PDT SAT AUG 1 2015

...THE FLASH FLOOD WARNING FOR NORTHWESTERN INYO COUNTY WILL EXPIRE
AT 845 PM PDT...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO 
POSE A THREAT. PLEASE REPORT ANY FLOODING OR FLOOD DAMAGE TO LOCAL 
LAW ENFORCEMENT. 

LAT...LON 3738 11808 3707 11792 3702 11818 3734 11833

$$

SC

Nearby

Flash Flood Warnings in California, 2015Every flash flood warning in 2015

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.