A series of shortwave troughs rotated through a main upper level trough brought showers and thunderstorms to the region the afternoon and evening of the 16th. Several storms lingered in place over areas due to weak steering flow.
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The episode as NWS REV wrote it up.
A series of shortwave troughs rotated through a main upper level trough brought showers and thunderstorms to the region the afternoon and evening of the 16th. Several storms lingered in place over areas due to weak steering flow.
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 Jun 16, 1:09 PM PST, 1 hour 51 minutes earlier.
Area Forecast Discussion National Weather Service Reno NV 209 PM PDT Sun Jun 16 2019 .SYNOPSIS... Thunderstorms remain possible each day through Monday especially near high terrain. As the airmass dries out starting Tuesday with high pressure building overhead, temperatures trend upward and humidities drop. By Thursday, low pressure moving into the Pacific Northwest will result in cooling along with increased winds. && .DISCUSSION... * Changes: No meaningful changes to t-storm probabilities next couple days but have lowered temps a bit late week along with increasing winds Wednesday into Thursday. * Thunderstorms: With mix of instability and passing shortwaves, storms remain a good bet this afternoon/evening and again Monday before fading from view Tuesday onward as drier and more stable airmass moves in. Already some buildups over the high terrain and even some south of the Black Rock Desert. Latest SPC HREF guidance, which has performed decently, paints the typical areas for convection - Tahoe, Eastern Sierra, and high terrain of W Nevada plus some isolated cells downwind of Lassen Peak. Typical impacts anticipated: strong outflow winds to 50 mph, small hail, lightning, and localized flash flooding especially near burn scars. * Pattern Shift Late Week: Strong ridge works into the region Tuesday into Wednesday leading to hot temps but nothing excessive. Some heat health impacts are possible for sensitive groups and those outside for prolonged periods. Ensemble guidance continues to show fairly significant trough diving into the Pac NW starting Thursday leading to a breakdown of the ridge. Not enough moisture for storms but this will lead to an increase in winds Wednesday and Thursday. Localized fire weather concerns are possible for lower elevation areas where grasses have cured already. This trough will also swing a front through leading to a noticeable drop in temperatures. Latest MOS now showing mid-70s at RNO Friday. Wow! Not record low-max material but respectable. Troughiness hangs around much of the western US into early next week - remind you of May? March? February?? Ridges lately are having a tough time sustaining themselves for prolonged periods. So this pattern favors near to slightly below normal temps with periods of breezy conditions in our region into next week. -Chris && .AVIATION... Thunderstorms remain the primary aviation weather hazard through Monday. Terrain driven storms over the Sierra and nearby high terrain develop during the early afternoon hours each day the push off to the east/southeast into the evening. Typical hazards with strong outflow winds to 40 kts, small hail, lightning, and brief periods of MVFR conditions in heavy rain. SPC HREF guidance really hits the Eastern Sierra into Central Nevada today and again Monday with risks for storms. This seems reasonable and has been performing well recently. Rough probabilities of t-storm impacts including outflows at TAF sites look something like this: * RNO: Sunday 25%, Monday 5%, Tuesday 0% * CXP: Sunday 40%, Monday 10%, Tuesday 0% * TRK/TVL: Sunday 60%, Monday 15%, Tuesday 1% * MMH: Sunday 80%, Monday 65%, Tuesday 15% -Chris && .HYDROLOGY... * No big changes here. Latest river simulations are bringing Walker River to flood stage at Mason/Yerington a bit sooner than before. But those increased flows will be predicated on enough snowmelt. If t-storm coverage is dense enough clouds have inhibit melt enough to matter so the next couple days will be interesting to watch. * Peak flows on many rivers and streams are likely to occur Thursday- Friday, about a day or so after the hottest temps. Then flows will likely drop quite a bit if these cooler (or at least closer to normal) temperature scenarios pan out starting Friday. -Chris && .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 156 PM PDT Sun Jun 16 2019 CAZ071>073-NVZ002-003-170000- Lassen-Eastern Plumas-Eastern Sierra Counties- Greater Lake Tahoe Area-Mono County-Greater Reno-Carson City- Minden Area- Including the cities of Portola, Susanville, Westwood, Sierraville, Loyalton, South Lake Tahoe, Tahoe City, Truckee, Markleeville, Bridgeport, Coleville, Lee Vining, Mammoth Lakes, Stateline, Glenbrook, Incline Village, Sparks, Verdi, Gardnerville, and Virginia City 156 PM PDT Sun Jun 16 2019 ...Thunderstorms Developing Across the Sierra and Western Nevada... * Through 5 PM scattered thunderstorms will continue to develop across the Sierra and far Western Nevada. Some areas impacted include Lassen National Park, Portola, Truckee and Lake Tahoe, Mt Rose, Reno and Carson City, Minden, Bridgeport, Mono Lake, and Mammoth Lakes. Storms will be somewhat slow moving, generally to the east around 5 to 10 mph. * Impacts from storms will include: strong and erratic outflow winds to 50 mph, frequent lightning, small hail, periods of heavy rain, and rapid temperature drops. Localized flooding is possible if heavy rains persist enough, including mudslides near old burn scars. * With storms developing, NOW is the time to seek a safe sturdy shelter indoors or in a car, if you are outdoors hiking or on the lake. Lightning is a real safety hazard even if the storms are relatively weak, and can strike 5 to 10 miles away from the storm core. No place outdoors is completely safe from lightning. http://weather.gov/reno
The Reno radar (KRGX), 162 km away, was scanning. The volume nearest the first event began at 22:58 UTC.
1 hail. Local standard time, as filed.
California Highway Patrol reported that approximately 20 cars were stuck over Sonora Pass due to accumulating hail a few inches deep at approximately 16 June 1530PST. The pass was closed overnight due to the incident.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2019Every state in 2019This day in weather historyWarnings in California, June 2019
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: 832021.