After exceptionally heavy snow during the winter, warming temperatures led to significant snowmelt runoff in the Eastern Sierra and the Owens Valley. The episode began in June, and the total estimated damage from the episode was reported in June.
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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 VEF wrote it up.
After exceptionally heavy snow during the winter, warming temperatures led to significant snowmelt runoff in the Eastern Sierra and the Owens Valley. The episode began in June, and the total estimated damage from the episode was reported in June.
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 Las Vegas, NV wrote its last area forecast discussion before the first event at Jun 30, 7:42 PM PST, 4 hours 18 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 842 PM PDT Fri Jun 30 2017 .SYNOPSIS...Temperatures will remain slightly above normal through the weekend with continued dry weather. Lighter winds are expected across the area today before the next weather disturbance brings breezy, southerly winds for the weekend. First potential chance for monsoon moisture will come late next week after the fourth of July holiday. && .UPDATE...Small cumulus field over the White Mtns and Fish Lake Valley of Esmeralda County this evening. Elsewhere, skies are clear with temperatures some 5-10 degrees off their highs of the day. Las Vegas topped 105 degrees today making it the 16th straight day with a high temperature of 105 or better. The record is 21 consecutive days. Weak trough moving into northern California/western Nevada Saturday will bring back the south/southwest breezes. Hi=res models showing strongest belt will be across parts of Inyo/Esmeralda and Nye counties. On Sunday, trough weakens but much of the area can still expect some afternoon and evening breezes. Above normal temperatures on Saturday will lower and be closer to normal Sunday. No update necessary. && .PREV DISCUSSION...224 PM PDT Fri Jun 30 2017 .SHORT TERM...tonight through Monday. Tranquil conditions expected to continue through this evening as an upper level ridge moves across the area. Behind the ridge, a weak upper disturbance will track overhead on Saturday before lifting to the NE on Sunday. Conditions will remain dry and warm as the trough passes, however, a breezy south wind will setup across the Mojave Desert and southern Great Basin zones. Wind speeds are will range from 15-20 MPH for most areas. Areas of central Nye County will see slightly higher wind speeds compared to the surrounding areas, with winds around 20-25 MPH and gusts up to 30 MPH. A south/southwest wind will linger Monday but should remain less than 15 MPH. Along with the wind, some high clouds across the northern areas will accompany the shortwave trough this weekend. Elsewhere, clear skies are expected through Monday. Temperatures will remain 5-8 degrees above normal tomorrow, before a slight decrease to afternoon temperatures Sunday and Monday, where highs will only be 2-5 degrees above normal. .LONG TERM...Tuesday through Friday. Dry and warm conditions will continue through at least the Fourth of July across the forecast area. Little wind or significant sensible weather is expected through that time. There is fairly decent agreement that by Wednesday, high pressure will be set up over the Four Corners region. This will at least open the door for monsoon moisture to seep into the region. Early indications show some low- grade moisture moving over SE California (including the Sierra) in the Wednesday/Thursday time frame. By Friday, the high pressure may begin to slide toward SW Utah. This would likely bring warmer temperatures back to the region. It also could bring trapped low- grade moisture to more of the forecast area. However, capping due to subsidence may limit convective activity in this set-up. As we move into Monsoon 2017, it's important to remember that confidence in the long-term forecast is usually lower than the rest of the year. This is due to how sensitive monsoon convection is to small-scale features that are poorly resolved at longer time scales. && .FIRE WEATHER...Lighter winds are expected this evening as high pressure builds over the area with dry conditions continuing into early next week. Breezy winds are likely this weekend as a weak shortwave moves through the region, with slightly higher winds expected on Saturday. Speeds will remain primarily between 15-20 mph gusting near 25 mph from the south to southwest each afternoon. Potentially critical fire weather conditions will be possible on Saturday afternoon across central and southern Nye County but look to be very marginal at this time. Elsewhere, winds should remain slightly under 20 mph. && .HYDROLOGY...Slight drop in temperatures over the past week along with a shrinking snowpack has lead to a lowering of flows in unregulated creeks, specifically Independence Creek, Big Pine Creek and Rock Creek from their peak flows observed on June 22. Even with this lowering, creeks, streams and rivers will be flowing higher than normal during the extended holiday weekend. Minor flooding could occur near creeks as well as a few low water crossings on some roadways. Remember, never drive through flooded roadways or around barricades. Also, pastureland or farmland adjacent to creeks, streams or rivers could experience areas of standing water. && .AVIATION...For McCarran...Southerly breezes below 8 kts will become light and variable after 12Z overnight. Southerly wind will increase Saturday afternoon as a disturbance approaches from the west. Wind speeds of 15-20 kts will be common with gusts exceeding 25 kts at times. For the rest of southern Nevada, northwest Arizona and southeast California...Winds will follow a general diurnal trend today and tonight as high pressure remains over the area with winds around 10 knots or less. The exception will be across the western Mojave Desert where speeds could reach 15-20 knots tonight from the west southwest. Southerly wind will increase from the south to north on Saturday beginning after 17Z along the Colorado River at KEED and KIFP. Wind speeds of 15-20 kts will be common with gusts of 25-30 kts at times. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && Update/Hydrology...Pierce SHORT TERM.....Boothe LONG TERM......Wolcott AVIATION.......Berc FIRE WEATHER...Guillet For more forecast information...see us on our webpage: http://weather.gov/lasvegas or follow us on Facebook and Twitter
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Widespread flooding occurred in western Inyo County due to melting of exceptionally heavy winter snowpack in the Sierra. Numerous roads, bridges, culverts, and other structures were damaged. The event began in June. The damage estimate for the entire event was reported in June.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2017Every state in 2017This day in weather historyWarnings in California, July 2017
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: 709594.