Alert archive / Nevada / Flash Flood Watches in 2013

Flash Flood Watch 3, NWS Elko, NV

August 31, 2013Nye County, White Pine County, Nevada

NWS Elko, NV issued this flash flood watch at Aug 31, 2013, 9:12 AM PDT for Nye County, White Pine County, Nevada. It took effect at Aug 31, 2013, 11:00 AM PDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Aug 31, 2013, 9:12 AM PDT (16:12 UTC)
In effect from
Aug 31, 2013, 11:00 AM PDT
Expired
Aug 31, 2013, 7:12 PM PDT
In force
8 hr
Issued by
NWS Elko, NV
Flood severity
None

Counties Nye County, NV, White Pine County, NV

The radar

The Elko radar (KLRX), 242 km from the middle of the area, began a volume at 16:14 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

Las Vegas, NV (KVEF), launched 12:00Z, 4.2 hours before the alert went out and 263 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 12:00Z on 2013-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 844 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 12:00Z on 2013-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 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
844 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
1425 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Elko, NV wrote its last area forecast discussion before this flash flood watch went out at Aug 31, 3:38 AM PDT, 5 hours 34 minutes earlier.

Area forecast discussion, Aug 31, 3:38 AM PDT, 5 hours 34 minutes before
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Hazardous weather outlook, Aug 31, 2:52 AM PDT, 6 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ELKO NV
252 AM PDT SAT AUG 31 2013

NVZ030-031-033>041-011000-
HUMBOLDT COUNTY-NORTHERN ELKO COUNTY-SOUTHEASTERN ELKO COUNTY-
RUBY MOUNTAINS/EAST HUMBOLDT RANGE-WHITE PINE COUNTY-
NORTHERN LANDER COUNTY AND NORTHERN EUREKA COUNTY-
SOUTHERN LANDER COUNTY AND SOUTHERN EUREKA COUNTY-
SOUTHWESTERN ELKO COUNTY-SOUTH CENTRAL ELKO COUNTY-
NORTHWESTERN NYE COUNTY-NORTHEASTERN NYE COUNTY-
252 AM PDT SAT AUG 31 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
NEVADA AND SOUTH CENTRAL NEVADA.

.DAY ONE...TODAY AND TONIGHT.

LEFTOVER TROPICAL MOISTURE WILL KEEP CENTRAL NEVADA POTENTIALLY WET
TODAY AND TONIGHT. SOME OF THE STORMS WILL PRODUCE HEAVY RAINS AND
BRIEF STRONG GUSTY WINDS...ALONG WITH FREQUENT DEADLY AND
DESTRUCTIVE LIGHTNING. MOST LIKELY AREAS WILL BE WHITE PINE
COUNTY...AND NORTHEAST NYE COUNTY...BUT AREAS OUTSIDE THIS COULD
ALSO HAVE ISOLATED HEAVY RAINS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

A FLASH FLOOD WATCH IS IN EFFECT FOR WHITE PINE COUNTY AND
NORTHEAST NYE COUNTY FOR SUNDAY AND SUNDAY EVENING. THIS AREA WILL
BE SWAMPED BY TROPICAL MOISTURE WHICH WILL CONTRIBUTE TO VERY
HEAVY RAINS. VERY SLOW MOVING THUNDERSTORMS WILL DEVELOP WHICH
MEANS THAT SUPER HEAVY RAINS WILL FALL IN ONE LOCATION. SOME
LOCATIONS WILL RECEIVE REPEAT STORMS OVER A LONG PERIOD...WHILE
OTHERS WILL JUST GET HAMMERED BY STORMS THAT MOVE NO WHERE. RECENT
STORMS HAVE A HISTORY OF PRODUCING BETWEEN ONE HALF INCH AND TWO
INCHES OF RAIN IN ABOUT AN HOUR. THIS WILL LEAD TO FLOODING OF
ROADS...DRY WASHES...AND CAUSE EXISTING STREAMS TO EXCEED THEIR
BANKS...AND LANDSLIDES.

OTHER AREAS IN CENTRAL AND NORTHERN NEVADA WILL NOT BE AS LIKELY
TO RECEIVE WIDESPREAD HEAVY RAINS...BUT ISOLATED SLOW MOVING
STORMS WILL STILL OCCUR OVER FLOOD PRONE AREAS.

MONDAY THROUGH FRIDAY A SLOW DRYING TREND WILL TAKE PLACE.

AS ALWAYS...IF YOU COME TO A FLOODED OR CLOSED ROAD...TURN AROUND.
DON'T DROWN. MOST FLOOD DEATHS OCCUR BECAUSE PEOPLE DRIVE RIGHT
INTO THE WATER.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ASKED TO REPORT WEATHER PHENOMENA ACCORDING TO
STANDARD OPERATING PROCEDURE. DO NOT...REPEAT NOT...PUT YOURSELF
IN DANGER TO REPORT TO US.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 2:38 AM PDTFlash Flood WatchLKNElko, Eureka, Lander, Nye, White Pine6 days
Aug 31, 1:47 PM PDTSpecial Weather StatementLKNNye28 min
Aug 31, 1:58 PM PDTSevere Thunderstorm WarningLKNNye32 min
Aug 31, 2:46 PM PDTSpecial Weather StatementLKN29 min
Aug 31, 2:57 PM PDTFlash Flood WarningLKNNye3 hr
Aug 31, 3:01 PM PDTSpecial Weather StatementLKNEureka44 min
Aug 31, 3:41 PM PDTSpecial Weather StatementLKNEureka49 min
Aug 31, 3:43 PM PDTAreal Flood AdvisoryLKNNye, White Pine5 hr

Nearby

Flash Flood Watches in Nevada, 2013Every flash flood watch in 2013

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.