A mix of wet and dry thunderstorms caused heavy rain and flooding, as well as strong outflow wind gusts.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LKN wrote it up.
A mix of wet and dry thunderstorms caused heavy rain and flooding, as well as strong outflow wind gusts.
The local office's own words before the first event, 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 the first event at Jun 30, 12:02 PM PST, 3 hours 43 minutes earlier.
Area Forecast Discussion National Weather Service Elko NV 102 PM PDT Wed Jun 30 2021 .SYNOPSIS...Scattered showers and thunderstorms this afternoon and evening and again on tomorrow. More isolated showers and storms possible for Friday. Slightly cooler temps expected before heating back up for the weekend. && .SHORT TERM...This afternoon through Friday evening...Showers and thunderstorms have developed and expected to increase in coverage through the afternoon as weak upper level low and monsoonal continued slowly lift north into Nevada. Two areas of localized vort maxes moving through the upper flow are focal points for convection firing off early this afternoon. One in White Pine and NE Nye counties and another near Humboldt and western Elko counties. Expecting a mix of wet and dry storms as low-levels are still dry, but mid-level moisture is increasing and PWAT values 0.75-1.00", with best moisture values across central NV. Storm motions are also generally less than 10kts. Strong downdraft/outflow winds will be biggest concerns, possibly leading to some blowing dust. Slight chance for isolated flash flooding across central NV as conditions are more moist across that region. More generally wet showers and storms tomorrow across most of northern/central NV with PWAT values again 0.75-1.00" and slow storm motions. Moisture and forcing continues to lift north on Friday and drier air begins to creep into central NV. Still expecting isolated showers and storms, mainly north of US 50. The slightly cooler, but still warm temps continue. Expect highs generally in the upper 80s to 90s, but the increase in clouds and precip could keep these a bit lower in some locales. .LONG TERM...Friday night through next Wednesday. On Saturday, expect another round of showers and thunderstorms but far less coverage as some drier air advects into the CWA from the south. This places the best chances in NE Nevada. By late afternoon, moisture once again surges northward into far southern parts of central NV. Too late for much convection, but does set the stage for increasing convection chances on Sunday. On Sunday, the four corners high shifts into SE AZ, which allows a small area of lower 1.5PV to lift NE into far NW Nevada late. This does turn the overall upper level flow to the SW. All together, moisture remains sufficient and with some instability to generate thunderstorms in northern Nevada, while drier air advecting into central minimize the convection threat. With several days on convection prior to Sunday, lean towards more wet given the .75 to 1.00 PWAT...which is running 100 to 150% of normal; however, storm motion will be slightly higher than previous days. By Monday, a 500mb trof has established itself off the Pacific NW coast, with a closed off circulation at the base of the this trof. A shortwave from this trof does lift NE and clip northern NV by the afternoon hours. It turns the winds more westerly and advect drier air into western Nevada; however, fails to reach eastern or central NV, where precipitable water values remain high enough (but less than on Sunday) for afternoon buildups and possible convection. By Tuesday, the main 500mb trof axis pushes near/or onshore. Although the stronger dynamics and the upper level low associated with the trof stay to the north, it does push the dry line further east...now mainly east of a Jackpot to Tonopah line. However, with the added weak jet dynamics, could see a better shot of convection, along with stronger storm motions. This could lead to increasing dry thunderstorm chances, especially near the ID/NV border. By next Wednesday, finally, the dry line pushes into far western UT or southern NV as the 500mb trof axis lifts into western WY. Still, some issues on how deep the this trof is, which lead to some questions on temperature and wind forecasts. Although some afternoon buildups are possible along the UT/NV border, no convection is anticipated as precipitable water values near or below .50 inches. As for temperatures, still above average with some of the hotspot hitting near 100; however, do not expect any heat headlines at this time. In fact, some guidance indicates a slight cool down by Tuesday and Wednesday...maybe some of the coolest locations staying in the 80s. && .AVIATION...Looks thunderstorms are station at KTPH and KELY with some brief heavy rainfall or gusty winds. As for the northern sites, less chance for thunderstorms on station but still good odds for gusty outflow winds from nearby storms. All activity should wind down after sunset with period of gusty winds at times due to decaying showers or thunderstorms. Expect more of the same tomorrow. && .FIRE WEATHER...Thunderstorm activity expands to include all zones today. Across FW Zones 425 426 and 427 in central NV, mid-level moisture and surface dew points favor the majority of storms today being wet. Across northern NV, in zones 437 438 469 470 and 424, any early afternoon storms will likely lean toward dry, however by late afternoon and early evening, storms are expected to changeover to wet. On Thursday, the majority of thunderstorms in all zones are expected to be wet as mid-level moisture and surface dew points trend higher. Storms today and Thursday are expected to be relatively slow moving, which also favors wetter storms. Thunderstorms possible again on Friday, mainly along and north of US 50, but drier in working in the from the south will generally lead to more isolated coverage. Drier and very warm for the weekend. && .LKN WATCHES/WARNINGS/ADVISORIES... Heat Advisory until 8 PM PDT this evening for Humboldt County- Northern Lander County and Northern Eureka County. && 87/85/85/87
Special Weather Statement National Weather Service Elko NV 1218 PM PDT Wed Jun 30 2021 NVZ030-031-033>041-010030- Humboldt County-Northern Elko County-Southeastern Elko County- Ruby Mountains and East Humboldt Range-White Pine County- Northern Lander County and Northern Eureka County- Southern Lander County and Southern Eureka County- Southwest Elko County-South Central Elko County- Northwestern Nye County-Northeastern Nye County- Including the cities of Golconda, Winnemucca, Valmy, Dufferena, Midas, Gibbs Ranch, Charleston, Jarbidge, Mountain City, Owyhee, Tuscarora, West Wendover, Ely, Ely Airport, Lund, Preston, Ruth, Cherry Creek, McGill, Argenta, Battle Mountain, Crescent Valley, Beowawe, Dunphy, Emigrant Pass, Palisade, Eureka, Pinto Summit, Grass Valley, Hickison Summit, Diamond Valley, Eureka Airport, Garden Pass, Elko, Ryndon, Jiggs, Lamoille, Lee, South Fork, Spring Creek, Ruby Lake, Oasis, Manhattan, Round Mountain, Tonopah, Blue Eagle Ranch, and Duckwater 1218 PM PDT Wed Jun 30 2021 ...SHOWERS AND THUNDERSTORMS MAY LEAD TO STRONG GUSTY WINDS... Showers and thunderstorms will continue to develop this afternoon across much of central and northern Nevada. Strong downdraft and outflow winds will be the biggest threat. Small hail, dangerous cloud to ground lightning, and heavy downpours could also occur. An outside shot for localized flash flooding is also possible, mainly across central Nevada. Visit www.weather.gov/elko for the latest weather information.
Special Weather Statement
National Weather Service Elko NV
417 PM PDT Wed Jun 30 2021
NVZ041-010000-
Northeastern Nye County NV-
417 PM PDT Wed Jun 30 2021
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN NYE AND SOUTHWESTERN
WHITE PINE COUNTIES UNTIL 500 PM PDT...
At 416 PM PDT, Doppler radar was tracking a strong thunderstorm 13
miles west of Duckwater, moving east at 20 mph.
Half inch hail and wind gusts 40 to 50 mph will be possible with this
storm.
Locations impacted include...
Duckwater.
LAT...LON 3882 11613 3901 11610 3904 11568 3899 11558
3876 11557
TIME...MOT...LOC 2316Z 269DEG 17KT 3892 11597
SSThe Elko radar (KLRX), 226 km away, was scanning. The volume nearest the first event began at 23:43 UTC.
1 flood, 1 thunderstorm wind. Local standard time, as filed.
Heavy rain and runoff caused minor flooding. Two inches of mud had to be removed from US Highway 93 north of McGill. This lasted about an hour. The mud flow occurred around mile marker 67 and was about 0.3 miles in length.
Station (COMN2) Combs Canyon Raws, Elevation 6589 feet.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2021Every state in 2021This day in weather historyWarnings in Nevada, June 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 958867, 958868.