Alert archive / Nevada / Flash Flood Warnings in 2017

Flash Flood Warning 34, NWS Las Vegas, NV

July 24, 2017Lincoln County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Jul 24, 2017, 7:13 PM PDT for Lincoln County, Nevada. It was in force for 3 hr. 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 24, 2017, 7:13 PM PDT (02:13 UTC)
Expired
Jul 24, 2017, 10:15 PM PDT
In force
3 hr
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

County Lincoln County, NV

The radar

The Cedar City radar (KICX), 131 km from the middle of the area, began a volume at 02:13 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
Jul 24, 7:20 PM PDTFLASH FLOODPioche, NVEMERGENCY MGNR REPORTED 2-3 OF FLOWING WATER WITH ROCKS & DEBRIS ALONG MANY RDWYS & PORTIONS OF HWY-93.
Jul 24, 7:30 PM PDTFLASH FLOOD2 Sw Pioche, NVLINCOLN COUNTY EM REPORTS ROAD DAMAGE DUE TO FLOODING IN CASELTON. FLOODING BEGAN AROUND 7:30 PM AND ENDED BY 10 PM.

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 00:00Z, 2.2 hours before the alert went out and 208 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 00:00Z on 2017-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 183 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Las Vegas, NV at 00:00Z on 2017-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
183 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
2329 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

075 
WGUS55 KVEF 250213
FFWVEF
NVC017-250515-
/O.NEW.KVEF.FF.W.0034.170725T0213Z-170725T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
713 PM PDT MON JUL 24 2017

The National Weather Service in Las Vegas has issued a

* Flash Flood Warning for...
  East central Lincoln County in south central Nevada...

* Until 1015 PM PDT

* At 711 PM PDT, Doppler radar indicated thunderstorms producing 
  very heavy rain in and around Pioche. Flash flooding is expected 
  to begin shortly.

* Some locations that will experience flooding include...
  Ursine, Pioche, Ranch Campground, Horsethief Gulch Campground,
  Eagle Valley, Meadow Valley Campground, Panaca, Echo Canyon State
  Park and Cathedral Gorge State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report flooding to your local law enforcement agency when you
can do so safely.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3777 11405 3767 11463 3825 11461 3831 11405

$$

JS
2 follow-up statements
703 
WGUS75 KVEF 250352
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
852 PM PDT MON JUL 24 2017

NVC017-250515-
/O.CON.KVEF.FF.W.0034.000000T0000Z-170725T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lincoln NV-
852 PM PDT MON JUL 24 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM PDT FOR
EAST CENTRAL LINCOLN COUNTY...

At 848 PM PDT, Doppler radar indicated thunderstorms producing heavy 
rain are redeveloping and moving into the warned area. Earlier... 
local law enforcement reported flash flooding in Pioche and 
addtional flooding is possible in other areas due to the heavy rain.

Some locations that could still experience flooding include...
Ursine, Pioche, Ranch Campground, Horsethief Gulch Campground, Eagle
Valley, Meadow Valley Campground, Panaca, Echo Canyon State Park and
Cathedral Gorge State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3777 11405 3767 11463 3825 11461 3831 11405

$$

JS
240 
WGUS75 KVEF 250508
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
1008 PM PDT MON JUL 24 2017

NVC017-250517-
/O.EXP.KVEF.FF.W.0034.000000T0000Z-170725T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lincoln NV-
1008 PM PDT MON JUL 24 2017

...THE FLASH FLOOD WARNING FOR EAST CENTRAL LINCOLN COUNTY WILL
EXPIRE AT 1015 PM PDT...

Heavy rain had ended in the Golden Valley area, and flooding is no 
longer expected to pose a threat. Please continue to heed any 
remaining road closures.

LAT...LON 3777 11405 3767 11463 3825 11461 3831 11405

$$

Morgan

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 5:39 PM PDTAreal Flood AdvisoryVEFLincoln3 hr
Jul 24, 9:34 PM PDTFlash Flood WarningVEFClark3 hr
Jul 24, 11:59 PM PDTFlash Flood WatchVEFClark, Nye20 hr
Jul 25, 12:43 AM PDTAreal Flood AdvisoryVEFLincoln4 hr
Jul 25, 2:15 AM PDTFlash Flood WarningVEFClark3 hr
Jul 25, 4:54 AM PDTFlash Flood WarningVEFClark6 hr
Jul 25, 5:42 AM PDTFlash Flood WarningVEFLincoln10 hr
Jul 25, 6:55 AM PDTFlash Flood WarningVEFClark5 hr
Jul 25, 8:06 AM PDTFlash Flood WarningVEFClark8 hr
Jul 25, 10:28 AM PDTAreal Flood AdvisoryVEFClark3 hr
Jul 25, 10:47 AM PDTAreal Flood AdvisoryVEFClark6 hr
Jul 25, 11:06 AM PDTFlash Flood WarningVEFClark6 hr
Jul 25, 1:57 PM PDTAreal Flood AdvisoryVEFEsmeralda4 hr
Jul 25, 2:57 PM PDTFlash Flood WarningVEFLincoln, Nye3 hr
Jul 25, 4:23 PM PDTFlash Flood WarningVEFLincoln, Nye3 hr

Nearby

Flash Flood Warnings in Nevada, 2017Every flash flood warning in 2017

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.