Alert archive / California / Flash Flood Warnings in 2015

Flash Flood Warning 21, NWS Las Vegas, NV

July 5, 2015Inyo County, California

NWS Las Vegas, NV issued this flash flood warning at Jul 5, 2015, 2:49 PM PDT for Inyo County, California. It was in force for 116 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 5, 2015, 2:49 PM PDT (21:49 UTC)
Expired
Jul 5, 2015, 4:45 PM PDT
In force
116 min
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), 165 km from the middle of the area, began a volume at 21:51 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

Las Vegas, NV (KVEF), launched 12:00Z, 9.8 hours before the alert went out and 235 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 2015-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 92 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 2015-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.193958Sfc1 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
92 J/kg
Mixed-layer CIN
-222 J/kg
Mixed-layer LCL
3048 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
31 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.

323 
WGUS55 KVEF 052149
FFWVEF
CAC027-052345-
/O.NEW.KVEF.FF.W.0021.150705T2149Z-150705T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
249 PM PDT SUN JUL 5 2015

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

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

* UNTIL 445 PM PDT

* AT 248 PM PDT...DOPPLER RADAR INDICATED HEAVY RAIN OVER MUCH OF 
  THE WHITE MOUNTAINS. THIS WILL INCLUDE WESTGARD PASS...HIGHWAY 
  168...AND DEATH VALLEY ROAD BETWEEN BIG PINE AND DEATH VALLEY. 
  FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WESTGARD PASS...GRANDVIEW CAMPGROUND AND ANCIENT BRISTLECONE
  VISITORS CENTER...DEATH VALLEY ROAD.

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 3676 11798 3746 11832 3746 11810 3686 11776

$$

ASG
2 follow-up statements
859 
WGUS75 KVEF 052309
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
409 PM PDT SUN JUL 5 2015

CAC027-052345-
/O.CON.KVEF.FF.W.0021.000000T0000Z-150705T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
409 PM PDT SUN JUL 5 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM PDT FOR
NORTHWESTERN INYO COUNTY...

AT 406 PM PDT...DOPPLER RADAR CONTINUED TO INDICATED THUNDERSTORMS 
PRODUCING MODERATE RAIN OVER PORTIONS OF THE WHITE MOUNTAINS. MUCH 
OF THE HEAVY RAIN HAS ENDED...BUT RUNOFF WILL LIKELY CONTINUE FOR A 
WHILE...ESPECIALLY OVER DEATH VALLEY ROAD BETWEEN BIG PINE AND DEATH 
VALLEY. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WESTGARD PASS...GRANDVIEW CAMPGROUND AND ANCIENT BRISTLECONE VISITORS
CENTER.

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 3676 11798 3746 11832 3746 11810 3686 11776

$$

ASG
111 
WGUS75 KVEF 052344
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
444 PM PDT SUN JUL 5 2015

CAC027-052353-
/O.EXP.KVEF.FF.W.0021.000000T0000Z-150705T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
444 PM PDT SUN JUL 5 2015

...THE FLASH FLOOD WARNING FOR NORTHWESTERN INYO COUNTY WILL EXPIRE
AT 445 PM PDT...

THE HEAVY RAIN HAS ENDED WITH JUST A FEW LIGHT SHOWERS IN THE AREA. 
SOME MINOR RUNOFF MAY STILL OCCUR THROUGH 600 PM...BUT THE THREAT OF 
FLASH FLOODING HAS ENDED. 

LAT...LON 3676 11798 3746 11832 3746 11810 3686 11776

$$

ASG

The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 5, 4:00 PM PDTAreal Flood AdvisoryVEFSan Bernardino3 hr
Jul 5, 4:22 PM PDTFlash Flood WarningVEFSan Bernardino113 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.