Alert archive / Nevada / Flash Flood Warnings in 2011

Flash Flood Warning 13, NWS Elko, NV

September 11, 2011Elko County, Nevada

NWS Elko, NV issued this flash flood warning at Sep 11, 2011, 6:36 PM PDT for Elko County, Nevada. 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
Sep 11, 2011, 6:36 PM PDT (01:36 UTC)
Expired
Sep 11, 2011, 8:32 PM PDT
In force
116 min
Issued by
NWS Elko, NV
Area
Storm-based polygon
Flood severity
None

County Elko County, NV

The radar

The Elko radar (KLRX), 161 km from the middle of the area, began a volume at 01:35 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 00:00Z, 1.6 hours before the alert went out and 164 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 00:00Z on 2011-09-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL1000850700500300200100-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Elko, NV at 00:00Z on 2011-09-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.1939Sfc1 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
NaN m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
77 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.

602 
WGUS55 KLKN 120136
FFWLKN
NVC007-120430-
/O.NEW.KLKN.FF.W.0013.110912T0136Z-110912T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ELKO NV
636 PM PDT SUN SEP 11 2011

THE NATIONAL WEATHER SERVICE IN ELKO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL ELKO COUNTY IN NORTHEAST NEVADA...

* UNTIL 930 PM PDT

* AT 624 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. 1 TO 2    
  INCHES OF RAIN HAS ALREADY FALLEN OVER THE WARNING AREA...WITH AN  
  ADDITIONAL INCH POSSIBLE OVER THE NEXT HOUR. 

LOCATIONS NEAR THE PATH OF INCLUDE...MAINLY RURAL AREAS OF NORTHERN 
ELKO COUNTY...ALONG THE UPPER REACHES OF THE BRUNEAU RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...BRUNEAU 
RIVER...WEST FORK SEVENTYSIX CREEK...DEER CREEK...COPPER 
CREEK...MEADOW CREEK...COUGAR CREEK...DORSEY CREEK...LITTLE 
COTTONWOOD CREEK AND COTTONWOOD CREEK.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 4200 11573 4199 11559 4172 11548 4171 11559

$$

DD
1 follow-up statement
730 
WGUS75 KLKN 120332
FFSLKN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ELKO NV
832 PM PDT SUN SEP 11 2011

NVC007-120341-
/O.CAN.KLKN.FF.W.0013.000000T0000Z-110912T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ELKO NV-
832 PM PDT SUN SEP 11 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTH CENTRAL ELKO
COUNTY...

RAINFALL HAS ENDED OVER THE WARNING AREA...THUS ENDING THE THREAT OF 
SIGNIFICANT FLOODING.   

&&

LAT...LON 4200 11573 4199 11559 4172 11548 4171 11559

$$

DD

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 12, 1:30 PM PDTSpecial Weather StatementLKNElko30 min

Nearby

Flash Flood Warnings in Nevada, 2011Every flash flood warning in 2011

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.