166 FXUS65 KLKN 110852 AFDLKNArea Forecast Discussion National Weather Service Elko NV 152 AM PDT Thu Sep 11 2025
.KEY MESSAGES...
Updated at 1257 AM PDT Thu Sep 11 2025
* A strong upper trough with Pacific moisture will push in from the NW bringing a return of showers and thunderstorms, as well as cooler temperatures through Saturday.
* A quiet weather pattern sets up over the Silver State beyond the weekend.
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.DISCUSSION... (Today through next Thursday)
WEATHER PATTERN OVERVIEW: The LPC of an upper level system will meander over the state Thursday and maintain position over the area through Friday afternoon before a slow migration out of the Great Basin to the east. This will keep southwesterly flow in place over NV. Strongest wind speeds continue to reside over White Pine County though increased RH over the state will keep fire weather criteria from being met. Showers and convective activity will initiate along a corridor from northwestern Nye County up through northeastern Elko County on Thursday. While CAPE values of 50-300 J/kg exist over a region enhanced by good frontogenesis Thursday afternoon PW values that struggle to reach 0.65 will keep activity mainly dry. If PW numbers can increase closer to 0.7 a changeover to a mix of more dry than wet convection is possible later in the day.
Friday the setup is similar though the focus of convective activity will shift slightly eastward as the system begins to migrate out of the state. PFR conditions are in place by Saturday ahead of a ridge that will help temperatures rebound slightly by the start of next week. Current model guidance has a trough and associated LPC eject towards the Great Basin from the parent trough further to the northwest. The current run, however, keeps the storm track for this system to the north over the northern Rockies. The low will deepen and expand Tuesday pushing perhaps some vorticity and increased forcing closer to the Silver State. This may increase precipitation chances along the northern border though much of the region will remain dry. Zonal flow aloft with building ridging over the SW CONUS take position by late week.
FORECAST CONFIDENCE & DEVIATIONS: Some dry thunder was added to grids for Thursday and Friday afternoon as NBM failed to match areal coverage of dry convection where reliable model guidance held sufficient ingredients for development and migration of dry storm activity.
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.AVIATION...
VFR conditions will be the predominant flight rule through Thursday night. A weather system spinning over the region will create shower and thunderstorm activity that will affect KBAM, KEKO, and KENV terminals Thursday afternoon. Falling precipitation in and near this activity may cause momentary MVFR or even IFR conditions. Afternoon gusty winds at the KELY terminal will gust near 20KTs before subsiding after sunset Thursday evening.
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.FIRE WEATHER...
Thursday afternoon thunderstorm activity over all fire weather zones will initiate around midday and start out as mostly dry thunderstorm activity as the associated weather system carries with it insufficient moisture. A changeover to a mix of more dry than wet will occur by late afternoon but the bulk of storm activity will remain dry. Eastern portions of fire weather zone 425 will see gusty winds near 30 mph Thursday afternoon but RH values stay above fire weather criteria as the system pushes through the region.
Friday a similar setup exists as the system slowly meanders to the east though the focus of shower and storm activity will shift to more east-central and eastern NV omitting for the most part fire weather zones 424 and 437 by Friday afternoon.
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.LKN Watches/Warnings/Advisories... None. &&
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DISCUSSION...99 AVIATION...99 FIRE WEATHER...99
NWS LKN Office Area Forecast Discussion