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Area Forecast Discussion
Issued by NWS Elko, NV
Issued by NWS Elko, NV
227 FXUS65 KLKN 202037 AFDLKN Area Forecast Discussion National Weather Service Elko NV 137 PM PDT Sat Jul 20 2024 .SYNOPSIS...Above normal temperatures, relatively light winds, and afternoon thunderstorms are expected across the region through next Wednesday. Cooler temperatures Thursday and Friday with diminishing thunderstorm activity. Dry next weekend with near to slightly below normal temperatures along with gusty southwesterly winds. && .SHORT TERM...Today through Sunday night. High pressure remains anchored over NV through the weekend keeping temperatures 5 to 10 degrees above normal. Weak to moderate instability in combination with mid-level moisture trapped under the ridge will produce isolated to scattered afternoon and early evening thunderstorms across most of the CWA both today and on Sunday. Winds remain light this weekend which will result in slow moving storms. Precipitable water values this afternoon range from around 0.65" over Humboldt county and northern Elko county, up to around 0.90" over most of central NV. Any storms that may develop today across central NV (including most of Lander and Eureka counties) could produce a tenth to a quarter inch or more of rain. Any storms north of I-80 today would likely have lighter rain amounts. Higher precipitable water values on Sunday with most locations at 0.80" to 1.00", which may result in moderate rains of a quarter inch or more in any strong thunderstorms activity. Best chances for thunderstorms capable of producing moderate rainfall on Sunday would be across Lander and Eureka counties, along with the western half of Elko county and into western White Pine county. .LONG TERM...Monday through next Saturday An upper level ridge will continue to bring warm temperatures across the CWA for much of next week. Heat risk continues to be an issue for Humboldt County, and portions of Lander, Eureka and Elko Counties as well. Current heat products remain in effect given the significant heat anticipated over the next few days. Meanwhile, monsoonal moisture advects into and over the state, bringing afternoon chances of showers and thunderstorms. Probability starts out 10% to 30% Monday through Wednesday, increasing up to 40% to 70% Thursday. A Pacific Northwest trough pushes the persistent ridge east by the end of the week. Friday afternoon highs will cool back into the upper 80s and lower 90s. Winds for the extended will be generally out of the southwest at 5 to 15 MPH with the occasional gust up to 30 MPH possible by next Saturday. && .AVIATION...VFR conditions are expected today. Mid level monsoonal moisture will allow for a 10% to 30% chance for showers and thunderstorms across all terminals. A higher probability of 30% to 60% exist this afternoon and evening at KELY and along the US-50 corridor. Gusty outflow winds up to 40+ knots, blowing dust, lightning, and heavy rainfall will be the primary threats. Should a storm impact a terminal a brief reduction to MVFR to even IFR levels may be possible. Outside of storms, light to breezy winds from the N to NE at speeds 5-15 knots with gusts to 20-25 knots. Storms are expected to weaken by the late evening hours. && .FIRE WEATHER...Today through next Wednesday, high pressure centered over Nevada will keep temperatures above normal and winds relatively light, while instability and mid-level moisture will produce afternoon and early evening showers and thunderstorms. The light winds will result in slower moving storms. Isolated showers and thunderstorms are developing across portions of central NV early this afternoon, and are expected to expand northward later this afternoon and early evening. The thunderstorm activity across central NV will likely increase to scattered later this afternoon. Most thunderstorm activity across central NV today is expected to wet, with the potential for heavier storms to produce a tenth to a quarter inch or more of rain. Northern NV zones this afternoon will be drier, likely beginning as dry and transitioning to wet by early evening. Storms will taper off later this evening with dry and stable conditions overnight. On Sunday storms across both northern and central NV will have more available moisture. Northern NV zones should see a little more thunderstorms activity on Sunday compared to this afternoon. && .LKN Watches/Warnings/Advisories... Excessive Heat Warning until 11 PM PDT Wednesday Humboldt County. Heat Advisory until 11 PM PDT Wednesday Northern Elko County... Northern Lander County and Northern Eureka County...Southeastern Elko County...Southwest Elko County. && $$ 96/90/90/96