Alert archive / Nevada / Flash Flood Warnings in 2014

Flash Flood Warning 39, NWS Elko, NV

September 21, 2014Eureka County, Lander County, Nevada

NWS Elko, NV issued this flash flood warning at Sep 21, 2014, 3:22 PM PDT for Eureka County, Lander 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
Sep 21, 2014, 3:22 PM PDT (22:22 UTC)
Expired
Sep 21, 2014, 6:15 PM PDT
In force
3 hr
Issued by
NWS Elko, NV
Area
Storm-based polygon
Flood severity
None

Counties Eureka County, NV, Lander County, NV

The radar

The Elko radar (KLRX), 98 km from the middle of the area, began a volume at 22:25 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

Reno, NV (KREV), launched 12:00Z, 10.4 hours before the alert went out and 124 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, Reno, NV at 12:00Z on 2014-09-21Temperature 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, Reno, NV at 12:00Z on 2014-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -42 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
1972 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-42 m²/s²
0-3 km storm-relative helicity
-14 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.

542 
WGUS55 KLKN 212222
FFWLKN
NVC011-015-220115-
/O.NEW.KLKN.FF.W.0039.140921T2222Z-140922T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ELKO NV
322 PM PDT SUN SEP 21 2014

THE NATIONAL WEATHER SERVICE IN ELKO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL EUREKA COUNTY IN NORTH CENTRAL NEVADA...
  THIS INCLUDES THE CITY OF GRASS VALLEY...
  EAST CENTRAL LANDER COUNTY IN NORTH CENTRAL NEVADA...

* UNTIL 615 PM PDT

* AT 315 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
STRONG THUNDERSTORMS WEST OF GRASS VALLEY NEAR MOUNT CALLAGHAN. 
RADAR ESTIMATES MORE THAN 2 INCHES OF RAIN HAS FALLEN FROM THIS 
STORM IN THE PAST HOUR. ADDITIONAL STORMS ARE RAINFALL ARE LIKELY 
AND WILL EXACERBATE RUNOFF AND FLOODING.

LOCATIONS NEAR THE PATH OF INCLUDE...GRASS VALLEY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 3990 11703 4009 11646 3979 11647 3959 11699

$$

TURNER
1 follow-up statement
867 
WGUS75 KLKN 220015
FFSLKN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ELKO NV
515 PM PDT SUN SEP 21 2014

NVC011-015-220024-
/O.CAN.KLKN.FF.W.0039.000000T0000Z-140922T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
EUREKA NV-LANDER NV-
515 PM PDT SUN SEP 21 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EAST CENTRAL LANDER
AND WEST CENTRAL EUREKA COUNTIES...

RAIN AND THUNDERSTORMS HAVE ENDED...AND RUNOFF HAS DIMINISHED. THE 
FLASH FLOOD WARNING IS CANCELLED.

&&

LAT...LON 3990 11703 4009 11646 3979 11647 3959 11699

$$

TURNER

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 5:13 PM PDTSpecial Weather StatementLKNEureka47 min
Sep 20, 5:21 PM PDTSevere Thunderstorm WarningLKNEureka, Lander, Nye28 min
Sep 20, 5:22 PM PDTSpecial Weather StatementLKN53 min
Sep 20, 5:30 PM PDTSpecial Weather StatementLKN45 min
Sep 20, 5:34 PM PDTSpecial Weather StatementLKN56 min
Sep 20, 6:06 PM PDTAreal Flood AdvisoryLKNElko3 hr
Sep 20, 6:37 PM PDTSpecial Weather StatementLKN23 min
Sep 20, 10:11 PM PDTAreal Flood AdvisoryLKNEureka, Lander6 hr
Sep 20, 10:20 PM PDTAreal Flood AdvisoryLKNNye6 hr
Sep 21, 2:43 AM PDTAreal Flood AdvisoryLKNWhite Pine6 hr
Sep 21, 4:16 AM PDTAreal Flood AdvisoryLKNEureka, Lander4 hr
Sep 21, 12:52 PM PDTAreal Flood AdvisoryLKNEureka, Lander, Nye3 hr
Sep 21, 1:47 PM PDTAreal Flood AdvisoryLKNEureka3 hr
Sep 21, 1:59 PM PDTSpecial Weather StatementLKNLander46 min
Sep 21, 2:10 PM PDTSevere Thunderstorm WarningLKNLander20 min
Sep 21, 2:19 PM PDTAreal Flood AdvisoryLKNEureka, Nye, White Pine3 hr
Sep 21, 2:32 PM PDTSpecial Weather StatementLKN43 min
Sep 21, 2:41 PM PDTSpecial Weather StatementLKNEureka49 min
Sep 21, 2:52 PM PDTSpecial Weather StatementLKNLander38 min
Sep 21, 2:58 PM PDTFlash Flood WarningLKNEureka3 hr
Sep 21, 3:13 PM PDTAreal Flood AdvisoryLKNEureka, Nye, White Pine3 hr
Sep 21, 3:37 PM PDTAreal Flood AdvisoryLKNNye, White Pine3 hr
Sep 21, 3:47 PM PDTFlash Flood WarningLKNElko, Eureka, White Pine3 hr
Sep 21, 3:52 PM PDTSpecial Weather StatementLKN38 min
Sep 21, 3:54 PM PDTSevere Thunderstorm WarningLKNEureka, Lander25 min
Sep 21, 4:23 PM PDTSpecial Weather StatementLKN37 min
Sep 21, 4:40 PM PDTAreal Flood AdvisoryLKNEureka, Lander3 hr
Sep 21, 4:58 PM PDTSpecial Weather StatementLKN32 min

Nearby

Flash Flood Warnings in Nevada, 2014Every flash flood warning in 2014

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.