Alert archive / Nevada / Flash Flood Warnings in 2017

Flash Flood Warning 13, NWS Elko, NV

August 7, 2017Elko County, Nevada

NWS Elko, NV issued this flash flood warning at Aug 7, 2017, 12:58 PM PDT for Elko County, Nevada. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 7, 2017, 12:58 PM PDT (19:58 UTC)
Expired
Aug 7, 2017, 4:00 PM PDT
In force
3 hr
Issued by
NWS Elko, NV
Area
Storm-based polygon
Flood severity
None

County Elko County, NV

The radar

The Elko radar (KLRX), 80 km from the middle of the area, began a volume at 19:59 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

Elko, NV (KLKN), launched 12:00Z, 8.0 hours before the alert went out and 218 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, Elko, NV at 12:00Z on 2017-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Elko, NV at 12:00Z on 2017-08-07The 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1857 m above ground
0-6 km bulk shear
12 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.

400 
WGUS55 KLKN 071958
FFWLKN
NVC007-072300-
/O.NEW.KLKN.FF.W.0013.170807T1958Z-170807T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Elko NV
1258 PM PDT MON AUG 7 2017

The National Weather Service in Elko Nevada has issued a

* Flash Flood Warning for...
  West central Elko County in northeastern Nevada...

* Until 400 PM PDT

* At 1256 PM PDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Flash flooding is expected to
  begin shortly.

* Flash flooding will remain over mainly rural areas of west central
  Elko County.
  Excessive rainfall over the Snowstorm burn scar will result in 
  debris flow. The debris flow can consist of rock, mud, vegetation 
  and other loose materials.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4154 11655 4134 11661 4133 11689 4153 11684

$$

SH
1 follow-up statement
223 
WGUS75 KLKN 072251
FFSLKN

Flash Flood Statement
National Weather Service Elko NV
351 PM PDT MON AUG 7 2017

NVC007-072301-
/O.EXP.KLKN.FF.W.0013.000000T0000Z-170807T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Elko NV-
351 PM PDT MON AUG 7 2017

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

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 4154 11655 4134 11661 4133 11689 4153 11684

$$

99

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 5:44 PM PDTFlash Flood WarningLKNLander, Nye3 hr
Aug 6, 5:48 PM PDTSpecial Weather StatementLKN27 min
Aug 6, 6:16 PM PDTSpecial Weather StatementLKN44 min
Aug 6, 7:34 PM PDTAreal Flood AdvisoryLKNLander3 hr
Aug 7, 12:37 PM PDTAreal Flood AdvisoryLKNElko3 hr
Aug 7, 12:41 PM PDTAreal Flood AdvisoryLKNEureka, Lander, Nye3 hr
Aug 7, 1:01 PM PDTSpecial Weather StatementLKN29 min
Aug 7, 1:17 PM PDTFlash Flood WarningLKNElko3 hr
Aug 7, 1:23 PM PDTSpecial Weather StatementLKNEureka37 min
Aug 7, 1:32 PM PDTSpecial Weather StatementLKNElko43 min
Aug 7, 1:37 PM PDTFlash Flood WarningLKNNye3 hr
Aug 7, 1:39 PM PDTSpecial Weather StatementLKNEureka36 min
Aug 7, 1:42 PM PDTSpecial Weather StatementLKNElko33 min
Aug 7, 2:25 PM PDTSpecial Weather StatementLKN50 min
Aug 7, 2:26 PM PDTFlash Flood WarningLKNHumboldt3 hr
Aug 7, 2:45 PM PDTSpecial Weather StatementLKN45 min
Aug 7, 3:04 PM PDTFlash Flood WarningLKNEureka, Nye, White Pine3 hr
Aug 7, 3:05 PM PDTAreal Flood AdvisoryLKNWhite Pine3 hr
Aug 7, 3:07 PM PDTSpecial Weather StatementLKNEureka38 min
Aug 7, 3:14 PM PDTSpecial Weather StatementLKN31 min
Aug 7, 3:24 PM PDTFlash Flood WarningLKNWhite Pine3 hr
Aug 7, 3:25 PM PDTFlash Flood WarningLKNWhite Pine3 hr
Aug 7, 3:34 PM PDTFlash Flood WarningLKNElko3 hr
Aug 7, 3:59 PM PDTFlash Flood WarningLKNWhite Pine3 hr
Aug 7, 4:06 PM PDTSpecial Weather StatementLKN24 min
Aug 7, 4:16 PM PDTFlash Flood WarningLKNNye3 hr
Aug 7, 4:28 PM PDTFlash Flood WarningLKNElko3 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.