Alert archive / Nevada / Flash Flood Warnings in 2012

Flash Flood Warning 4, NWS Elko, NV

July 16, 2012Elko County, Nevada

NWS Elko, NV issued this flash flood warning at Jul 16, 2012, 4:40 PM PDT for Elko County, Nevada. It was in force for 6 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: Jul 16, 2012, 4:40 PM PDT (23:40 UTC)
Expired: Jul 16, 2012, 10:45 PM PDT
In force: 6 hr
Issued by: NWS Elko, NV
Area: Storm-based polygon
Flood severity: None

County Elko County, NV

The radar

The Salt Lake City radar (KMTX), 150 km from the middle of the area, began a volume at 23:42 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, 11.7 hours before the alert went out and 45 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2207 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 64 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.

933 
WGUS55 KLKN 162340
FFWLKN
NVC007-170245-
/O.NEW.KLKN.FF.W.0004.120716T2340Z-120717T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ELKO NV
440 PM PDT MON JUL 16 2012

THE NATIONAL WEATHER SERVICE IN ELKO HAS ISSUED A

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

* UNTIL 745 PM PDT

* AT 435 PM PDT...THE PUBLIC REPORTED FLASH FLOODING FROM A
  THUNDERSTORM OVER THE WARNED AREA.

LOCATIONS NEAR THE PATH OF INCLUDE...MONTELLO AND STATE ROUTE 233.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
LORAY WASH...THOUSAND SPRINGS CREEK AND MONTELLO CREEK.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. 
ADDITIONALLY...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO 
FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

&&

LAT...LON 4123 11430 4135 11431 4136 11413 4131 11413
      4126 11418 4116 11431

$$

DD

2 follow-up statements

352 
WGUS55 KLKN 170239
FFWLKN
NVC007-170545-
/O.EXT.KLKN.FF.W.0004.000000T0000Z-120717T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ELKO NV
739 PM PDT MON JUL 16 2012

THE NATIONAL WEATHER SERVICE IN ELKO HAS EXTENDED THE

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

* UNTIL 1045 PM PDT

* AT 732 PM PDT...A TRAINED SPOTTER REPORTED FLASH FLOODING 
CONTINUING IN MONTELLO...WITH WATER STILL FLOWING THROUGH AREA 
ROADWAYS. THIS WATER FROM PREVIOUS THUNDERSTORMS WILL ONLY SLOWLY 
RECEDE THROUGH THIS EVENING. 

ADDITIONAL SHOWERS AND THUNDERSTORMS NEAR AND SOUTHWEST OF MONTELLO 
WILL PRODUCE ADDITIONAL MODEST RAINFALL AMOUNTS THROUGH 830 PM. 

LOCATIONS INCLUDED....MONTELLO AND STATE HIGHWAY 233 NEAR MONTELLO. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
LORAY WASH...THOUSAND SPRINGS CREEK AND MONTELLO CREEK.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ELKO.

&&

LAT...LON 4123 11430 4135 11431 4136 11413 4131 11413
      4126 11418 4116 11431

$$

TURNER

016 
WGUS75 KLKN 170539
FFSLKN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ELKO NV
1039 PM PDT MON JUL 16 2012

NVC007-170547-
/O.EXP.KLKN.FF.W.0004.000000T0000Z-120717T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ELKO NV-
1039 PM PDT MON JUL 16 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1045 PM PDT FOR EAST
CENTRAL ELKO COUNTY...

FLOOD WATERS FROM EARLIER THUNDERSTORMS HAVE RECEDED...AND ANY
ADDITIONAL SHOWERS AND THUNDERSTORMS HAVE DISSIPATED. THE FLASH
FLOOD WARNING NEAR MONTELLO IN EAST CENTRAL ELKO COUNTY WILL
BE ALLOWED TO EXPIRE AT 1045 PM PDT. 

&&

LAT...LON 4123 11430 4135 11431 4136 11413 4131 11413
      4126 11418 4116 11431

$$

TURNER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 11:12 AM PDT	Special Weather Statement	LKN	White Pine	48 min
Jul 16, 11:23 AM PDT	Special Weather Statement	LKN		37 min
Jul 16, 12:11 PM PDT	Special Weather Statement	LKN		34 min
Jul 16, 12:46 PM PDT	Special Weather Statement	LKN		44 min
Jul 16, 1:05 PM PDT	Special Weather Statement	LKN	Eureka	25 min
Jul 16, 1:44 PM PDT	Special Weather Statement	LKN		31 min
Jul 16, 2:09 PM PDT	Special Weather Statement	LKN		36 min
Jul 16, 2:21 PM PDT	Special Weather Statement	LKN		24 min
Jul 16, 2:31 PM PDT	Special Weather Statement	LKN		29 min
Jul 16, 2:33 PM PDT	Special Weather Statement	LKN		42 min
Jul 16, 2:51 PM PDT	Flash Flood Warning	LKN	Elko	71 min
Jul 16, 3:00 PM PDT	Special Weather Statement	LKN	White Pine	30 min
Jul 16, 3:03 PM PDT	Special Weather Statement	LKN		27 min
Jul 16, 3:09 PM PDT	Special Weather Statement	LKN	White Pine	36 min
Jul 16, 3:59 PM PDT	Special Weather Statement	LKN		31 min
Jul 16, 4:31 PM PDT	Special Weather Statement	LKN		29 min

Nearby

Flash Flood Warnings in Nevada, 2012 Every flash flood warning in 2012

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.