Severe downslope winds affected the Fish Lake Valley ahead of a cold front.
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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.
Severe downslope winds affected the Fish Lake Valley ahead of a cold front.
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 Oct 20, 2:14 AM PST, 1 hour 46 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 314 AM PDT Fri Oct 20 2017 .SYNOPSIS... Windy conditions are expected today as a storm system and associated cold front pass over the region. Most areas will see lighter winds on Saturday, except down the Colorado River Valley where gusty, north winds will continue through the weekend. Cooler temperatures are expected today and tomorrow before a warming trend begins Sunday into next week. && .SHORT TERM...Today through Sunday. Low pressure system will make its way across the Western US today accompanied by a dry, sfc cold front. Local effects with this system have already begun as a strong upper level jet rounds the bottom of the trough bringing strong westerlies to the higher elevations of the Sierra. A few gusts over 40 mph have made it down into the Owens Valley with a gust of 41 mph recorded at Bishop Airport. This morning the focus area for winds will shift to San Bernardino and Mohave counties ahead of the approaching cold front as aforementioned jet shifts south and eastward. Gusts in these areas are expected to remain between 40-50 mph, with isolated gusts up to 55 mph possible across the western Mojave Desert. Winds will shift to the north as cold front moves through today with some stronger post-frontal winds expected across Esmeralda and central Nye counties. Moisture associated with this system will remain to the north of the area with any chances for rain/snow limited to the higher elevations of the Sierra this morning. By late tonight front will have pushed south of the area and cooler temps will filter in as winds slowly diminish on the backside of the exiting trough. Temps today and tonight will be 5-10 degrees cooler than yesterday; dropping another few degrees on Saturday. Lighter winds are expected on Saturday with the exception being down the Colorado River Valley where gusty, northerly winds continue. Sustained winds in this area will be around 20-25 mph gusting near 30 mph and a Lake Wind Advisory may be needed for a portion of the day Saturday. This cool down will not last long as ridge builds in quickly behind exiting trough on Sunday bringing temps back up to near seasonal normals. .LONG TERM...Monday through Thursday. Dry and warm fall weather is expected to begin the work week with high pressure forecast over the area Monday and Tuesday sending high temperatures back to 6-8 degrees above normal. A few degrees of cooling is forecast by midweek with high pressure breaking down and the upper flow flattening as an upper level trough and associated cold front move into the Pacific NW. While this system if forecast to move east across the northern Rockies and Northern Plains on Thursday, models bring a shortwave south through the Great Basin, bringing a cold front and gusty north winds through the region. There are model differences in how strong the front will be when it passes through the forecast area and whether additional energy late Friday reinforces the northerly flow. && .AVIATION...For McCarran...Gusty, southwest winds will increase after sunrise this morning reaching speeds of 15-20 knots gusting 25-30 knots through early afternoon. This afternoon winds become more westerly, decreasing slightly as a result. Winds will shift to the northwest this evening and become gusty as a cold front passes between 02z-06z. These winds will not be as strong as Friday morning with gusts closer to 20 knots. Lighter north to northeast winds are expected on Saturday. For the rest of southern Nevada, northwest Arizona and southeast California...Strong, west winds across the southern Sierra and Owens Valley will decrease after sunrise. Strong, southwest winds will increase in a band from San Bernardino County to Mohave County ahead of an approaching cold front. As cold front pushes through the southern Great Basin today, winds will shift north and become gusty. Other areas will shift to the north this evening and tonight with lighter winds expected across much of the area Saturday. Exception will be down the Colorado River Valley where gusty, north winds will continue. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && SHORT TERM/AVIATION...Guillet LONG TERM....Salmen For more forecast information...see us on our webpage: http://weather.gov/lasvegas or follow us on Facebook and Twitter
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
420 AM PDT FRI OCT 20 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0242 AM NON-TSTM WND GST 5 NW INDEPENDENCE 36.84N 118.27W
10/20/2017 M70 MPH INYO CA MESONET
OAK CREEK RAWS MEASURED A PEAK WIND GUST OF
70 MPH.
&&
JSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
425 AM PDT FRI OCT 20 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0354 AM NON-TSTM WND GST 3 SE ROUND VALLEY 37.39N 118.55W
10/20/2017 M61 MPH INYO CA MESONET
OWENS VALLEY RAWS MEASURED A 61 MPH PEAK
WIND GUST.
&&
JSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
428 AM PDT FRI OCT 20 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0350 AM NON-TSTM WND GST 3 ENE MT. CHARLESTON 36.27N 115.60W
10/20/2017 M49 MPH CLARK NV MESONET
KYLE CANYON RAWS MEASURED A 49 MPH WIND
GUST.
&&
JSThe national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
High winds destroyed a mobile home in Dyer.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2017Every state in 2017This day in weather historyWarnings in Nevada, October 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: 721189.