Alert archive / Nevada / Flash Flood Warnings in 2015

Flash Flood Warning 49, NWS Las Vegas, NV

July 9, 2015Esmeralda County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Jul 9, 2015, 2:04 PM PDT for Esmeralda County, Nevada. It was in force for 116 min. 2 reports 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: Jul 9, 2015, 2:04 PM PDT (21:04 UTC)
Expired: Jul 9, 2015, 4:00 PM PDT
In force: 116 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Flood severity: None

County Esmeralda County, NV

The radar

The San Joaquin Valley radar (KHNX), 211 km from the middle of the area, began a volume at 21:04 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

Time	Report	Where	Remark
Jul 9, 3:38 PM PDT	FLASH FLOOD	10 N Dyer, NV	SAND AND DEBRIS ACROSS HIGHWAY 264 AT MILE MARKER 15
Jul 9, 3:38 PM PDT	FLASH FLOOD	4 Nnw Dyer, NV	WATER AND DEBRIS FLOWING ACROSS HIGHWAY 264 BETWEEN MILE MARKERS 12 AND 13.

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

The nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 9.1 hours before the alert went out and 204 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: -148 J/kg
Mixed-layer LCL: 1093 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 29 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.

663 
WGUS55 KVEF 092104
FFWVEF
NVC009-092300-
/O.NEW.KVEF.FF.W.0049.150709T2104Z-150709T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
204 PM PDT THU JUL 9 2015

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL ESMERALDA COUNTY IN SOUTH CENTRAL NEVADA...

* UNTIL 400 PM PDT
    
* AT 202 PM PDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING 
  HEAVY RAIN JUST NORTH OF DYER. THE STORM IS MOVING NORTHWEST AT 15 
  MPH.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  FISH LAKE VALLEY CAMPGROUND AND HIGHWAY 264. 

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.

&&

LAT...LON 3785 11823 3785 11787 3756 11787 3756 11797
      3775 11823

$$

MORGAN

2 follow-up statements

563 
WGUS75 KVEF 092148
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
248 PM PDT THU JUL 9 2015

NVC009-092300-
/O.CON.KVEF.FF.W.0049.000000T0000Z-150709T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESMERALDA NV-
248 PM PDT THU JUL 9 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM PDT FOR
WEST CENTRAL ESMERALDA COUNTY...

AT 240 PM PDT...A TRAINED SPOTTER REPORTED WATER AND DEBRIS WERE 
FLOWING ACROSS HIGHWAY 264 BETWEEN MILE MARKERS 12 AND 13 AS WELL AS 
NEAR MILE MARKER 20. DOPPLER RADAR INDICATED THAT HEAVY RAIN HAD 
ENDED...HOWEVER RUNOFF IS STILL FLOWING OUT OF THE MOUNTAINS...SO 
THE FLASH FLOOD WARNING REMAINS IN EFFECT.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FISH LAKE VALLEY CAMPGROUND AND HIGHWAY 264. 

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.

&&

LAT...LON 3785 11823 3785 11787 3756 11787 3756 11797
      3775 11823

$$

MORGAN

682 
WGUS75 KVEF 092252
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
352 PM PDT THU JUL 9 2015

NVC009-092301-
/O.EXP.KVEF.FF.W.0049.000000T0000Z-150709T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESMERALDA NV-
352 PM PDT THU JUL 9 2015

...THE FLASH FLOOD WARNING FOR WEST CENTRAL ESMERALDA COUNTY WILL
EXPIRE AT 400 PM PDT...

AT 350 PM PDT...A TRAINED SPOTTER REPORTED THAT FLOOD WATERS HAD 
RECEDED...AND ARE NO LONGER EXPECTED TO POSE A THREAT TO LIFE OR 
PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD CLOSURES.

LAT...LON 3785 11823 3785 11787 3756 11787 3756 11797
      3775 11823

$$

MORGAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 4:06 PM PDT	Flash Flood Warning	VEF	Lincoln	3 hr

Nearby

Flash Flood Warnings in Nevada, 2015 Every 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.