Alert archive / Nevada / Flash Flood Watches in 2018

Flash Flood Watch 9, NWS Elko, NV

September 29, 2018Elko County, Nye County, White Pine County, Nevada

NWS Elko, NV issued this flash flood watch at Sep 29, 2018, 2:04 PM PDT for Elko County, Nye County, White Pine County, Nevada. It took effect at Oct 2, 2018, 11:00 AM PDT. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
Sep 29, 2018, 2:04 PM PDT (21:04 UTC)
In effect from
Oct 2, 2018, 11:00 AM PDT
Expired
Oct 3, 2018, 2:49 AM PDT
In force
16 hr
Issued by
NWS Elko, NV
Flood severity
None

Counties Elko County, NV, Nye County, NV, White Pine County, NV

The radar

The Elko radar (KLRX), 169 km from the middle of the area, began a volume at 21:09 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

Salt Lake City I, UT (KSLC), launched 12:00Z, 9.1 hours before the alert went out and 341 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, Salt Lake City I, UT at 12:00Z on 2018-09-29Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 12:00Z on 2018-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 200 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
3923 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
200 m²/s²
0-3 km storm-relative helicity
216 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 Sep 29, 1:51 AM PDT, 12 hours 13 minutes earlier.

Area forecast discussion, Sep 29, 1:51 AM PDT, 12 hours 13 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 29, 4:58 PM PDTSpecial Weather StatementLKN92 min

Nearby

Flash Flood Watches in Nevada, 2018Every flash flood watch in 2018

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.