Stronger thunderstorms that initiated along Sierra Front and eastern Sierra moved northwest and north across western Nevada and northeast California. Some storms produced strong, gusty outflow winds that lowered visibility in blowing dust in parts of the Basin and Range.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 REV wrote it up.
Stronger thunderstorms that initiated along Sierra Front and eastern Sierra moved northwest and north across western Nevada and northeast California. Some storms produced strong, gusty outflow winds that lowered visibility in blowing dust in parts of the Basin and Range.
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 Reno, NV wrote its last area forecast discussion before the first event at Aug 8, 10:22 AM PST, 4 hours 38 minutes earlier.
Area Forecast Discussion National Weather Service Reno NV 1122 AM PDT Mon Aug 8 2022 .SYNOPSIS... An active thunderstorm pattern is expected through mid-week as monsoon moisture returns to the eastern Sierra and western Nevada. This will result in an enhanced potential of heavy rainfall and flash flooding risk for area burn scars through Tuesday. Storm potential will decrease by Wednesday with isolated storms lingering across the western Nevada Basin and Range through Thursday. Seasonable temperatures and typical afternoon breezes will prevail into the weekend. && .SHORT TERM... * Monsoon moisture surges back into the eastern Sierra and western Nevada today which will result in another active thunderstorm pattern through Tuesday. * There will be a potential for a myriad of impacts this afternoon and evening including flash flooding for area burn scars, strong and gusty outflow winds, areas of blowing dust downwind of dry lake beds and desert sinks, and lightning impacts which could result in new fires starts (See Fire Discussion below for additional details). * Burn Scar Flash Flood Potential through Tuesday: A threat for flash flooding will be favored for areas of steep terrain and burn scars mainly south of I-80. This is where monsoon moisture has already arrived as evidenced by surface dewpoints near 50 degrees and PWATS approaching 0.90". While burn scars in Alpine and Mono county will straddle the edge of the moisture surge, they will still see an increased risk for flash flooding and debris flows particularly if storms begin to train and back- build through the afternoon. While storms will be much faster moving than our previous round of storms, they will still be efficient rainfall producers. Heavier storms will be capable of rain-rates of 1-2"/hr. Douglas County burn scars including the Numbers/Monarch scars could see a little more favorable set up for flash flooding as they are positioned a bit farther east in the moisture with an anchoring potential on the Pine Nut range. * Thunderstorm Outflow Impacts: Strong and gusty thunderstorm outflow winds look to be more of an impact across western Nevada roughly northward of US-50 as drier sub-cloud layers still support DCAPES greater than (1500-2000 J/KG). This will allow for a gust potential of 60+ mph this afternoon. Boaters, particularly across Pyramid Lake, should be alert for the potential of sudden changes in prevailing conditions due to abrupt increases in wind and wave heights due to thunderstorm outflow boundaries tracking northward through the afternoon into early evening. As additional moisture moves into the area, thunderstorm outflow strength will diminish some by Tuesday with gusts around 40-45 mph. * A few cells will be capable of being better organized due to modest increases in 0-6km shear roughly from the Tahoe Basin northward into Lassen County. Strong to severe storms are a possibility with some isolated dry strikes possible due to faster storm motions and drier low levels around Lassen County and extending into eastern Modoc and far northern Washoe County. As we head into Tuesday, additional monsoon moistures will transition most storms to the wetter variety with the potential for heavy rainfall extending northward to near the southern Oregon border. Fuentes .LONG TERM (Wednesday Onward)... At the start of the long-term period, the area of low pressure that has been pestering us for some time will finally begin pulling off to the north, paralleling the Pacific Coastline. While the main forcing that we have been experiencing in recent days will be subsiding as the low pulls away, upper level divergence on the southeastern side of the jet streak along with abundant daytime heating (highs in the mid-90s across western NV) will support at least isolated thunderstorms. Bulk shear of 25-30kt hanging around will support quicker storm motions and DCAPE of 1500-2000J/kg will support stronger downdrafts and gusty winds. With the drier air intruding into the area on the backside of the low, isolated to scattered storm chances will mainly be confined along and east of Alt US-95. By Thursday, Thunderstorm chances will shift farther east and taper off a bit as drier upper-level flow shifts more out of the southwest. It can't be completely ruled out that a stray shower or thunderstorm doesn't pop off elsewhere - but blended guidance is not high enough to support the mention of weather outside of eastern Mineral/Churchill/Pershing. A very similar situation looks to be on tap Friday (in therms of temperatures and PoP coverage) as the low temporarily stalls off the WA coast and the southwest upper-level flow prevails. The low looks to finally get kicked off to the east for good by Saturday. Strong surface high pressure over the Pacific will deflect a deep trough from making its way into CA. However, deterministic runs of the GFS and ECMWF both indicate a couple of smaller upper-level shortwaves may sneak their way through into the region which may enhance thunderstorm development from Saturday through Monday. These features are low predictability in timing and magnitude. Thus rain chances will stay minimal during this time period for now. Temperatures will remain seasonable for this time of year through the rest of the forecast period. -Dustin && .AVIATION... Showers and thunderstorms will continue to fire off across the Eastern Sierra Front this afternoon. 18Z TAFS will carry TEMPO groups for all terminals with the exception of TRK and TVL which should remain west of the convection. MMH will have the greatest coverage with the highest likelihood of degraded flight categories and gusty outflow winds, followed by MEV, CXP, and RNO respectively. Sky cover will improve late this evening before additional cloud coverage rolls in overnight. Expect another day of convection tomorrow afternoon with Mono county and western Nevada favored to receive the most activity. -Dustin && .FIRE WEATHER... * Isolated dry thunderstorms will be possible this afternoon across portions of Lassen County and extending northward through Modoc and far northern Washoe counties. While storm motions will be fast moving (20-30kts), monsoon moisture will be on the increase through Tuesday which will transition hybrid type storms capable of isolated dry strikes to wetter storms by Tuesday. * There will also be an increased threat for strong and gusty thunderstorm outflow winds this afternoon particularly across western Nevada northward of US-50. Storm outflow winds could reach in excess of 60 mph this afternoon which could result in sudden changes in wind speed and direction. This could be impactful to any ongoing incidents across northwestern Nevada including the Granite and North Springs Fires. By Tuesday, the outflow gust potential will decrease to 40-45 mph as additional moisture moves into the area. * Burn scars from previous years could see an increased risk of flash flooding and debris flows including the Slink, Tamarack, Boot and Numbers Scars in Mono, Alpine, and Douglas Counties. Fuentes && .REV Watches/Warnings/Advisories... NV...None. CA...None. && For more information from the National Weather Service visit... http://weather.gov/reno
Special Weather Statement
National Weather Service Reno NV
1227 PM PDT Mon Aug 8 2022
NVZ003-004-082015-
Western Nevada Basin and Range including Pyramid Lake NV-
Greater Reno-Carson City-Minden Area NV-
1227 PM PDT Mon Aug 8 2022
...A strong thunderstorm will impact portions of Storey, southern
Washoe and central Lyon Counties through 115 PM PDT...
At 1226 PM PDT, Doppler radar was tracking a strong thunderstorm over
Virginia City, moving north at 25 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Reno, Virginia City, Sparks, Dayton, Lockwood, Wingfield Springs,
Spanish Springs, Lemmon Valley-Golden Valley, Golden Valley, Hidden
Valley, Stead, Damonte Ranch, Pleasant Valley, Lemmon Valley,
Reno-Tahoe International Airport, Nws Reno, Gold Hill, Spanish
Springs Airport, Six Mile Canyon and Nv 341 At Washoe-Storey Co Line.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3931 11946 3926 11973 3966 11992 3975 11976
3974 11945
TIME...MOT...LOC 1926Z 167DEG 23KT 3933 11964
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
DNSpecial Weather Statement
National Weather Service Reno NV
107 PM PDT Mon Aug 8 2022
NVZ003>005-082100-
Western Nevada Basin and Range including Pyramid Lake NV-
Northern Washoe County NV-Greater Reno-Carson City-Minden Area NV-
107 PM PDT Mon Aug 8 2022
...Strong thunderstorms will impact portions of southeastern Lassen
and southern Washoe Counties through 200 PM PDT...
At 105 PM PDT, Doppler radar was tracking strong thunderstorms along
a line extending from Verdi to near Sparks to 6 miles northwest of
Derby Dam. Movement was north at 25 mph. Outflow winds up to 50 mph
have been reported with these storms. These will be moving north
towards Pyramid Lake within the hour.
HAZARD...Wind gusts up to 50 mph and occasional cloud-to-ground
lightning.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Reno, Pyramid Lake, Sparks, Wingfield Springs, Northwest Reno,
Spanish Springs, Sutcliffe, Cold Springs, Cold Springs Valley, Lemmon
Valley-Golden Valley, Mogul, Golden Valley, Virginia Peak,
Verdi-Mogul, Somersett, Stead, Verdi, Lemmon Valley, Nws Reno and
Dogskin Mountain.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4019 12000 4021 11973 4021 11934 3967 11941
3948 12000
TIME...MOT...LOC 2005Z 194DEG 23KT 3951 11997 3957 11978 3966 11951
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
DNThe national radar mosaic for the moment the first event began.
1 dust storm, 1 high wind. Local standard time, as filed.
ASOS located at Lovelock Derby Field (KLOL) reported visibility less than 1/4 mile and heavy rain for 12 minutes. Alert-wildfire and NDOT cameras along I-80 from Trinity junction to Imlay showed a wall of dust and rain.
East Carson, NV Energy mesonet site, located 4.0 mi ENE Carson City recorded a 68 mph easterly wind gust.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2022Every state in 2022This day in weather historyWarnings in Nevada, August 2022
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: 1051259, 1051262.