A landspout was photographed in open desert south of Interstate 40. No damage occurred.
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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.
A landspout was photographed in open desert south of Interstate 40. No damage occurred.
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 Jul 30, 11:11 AM PST, 6 hours 7 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 1211 PM PDT Sun Jul 30 2023 .SYNOPSIS...Showers and thunderstorms will bring areas of heavy rainfall and gusty winds across northwest Arizona, southern Nevada, and far eastern California this afternoon and evening as monsoonal moisture builds into the area. This increased moisture will spread north and west Monday and Tuesday resulting in greater storm coverage over southern Nevada and eastern California. Conditions will gradually dry out Wednesday and beyond, allowing temperatures to return to near-normal levels by the weekend. && .DISCUSSION...Active weather is expected through the first part of the week as an inverted trough passing to the south pushes abundant moisture northward into our region. Precipitable water levels will continue to climb during the period, with levels increasing to near 1.5" across southern Nevada and 1.75" in the Colorado River Valley. These values are 150-200 percent of average July values suggesting the possibility of heavy rainfall and flash flooding. For the remainder of today, most of the activity is expected to be mainly across Mohave, far eastern San Bernardino, and southern Clark counties. High-resolution models have struggled this morning with this activity, and current radar and satellite trends suggest that the ongoing convection will continue through the afternoon and into the evening before gradually weakening after sunset. As mentioned above, heavy rainfall is the primary concern across this area, and isolated rainfall amounts in excess of 2 inches are possible. Further north and west, moisture is still limited today. However, DCAPE across southern Nevada and eastern California is over 1000 J/kg today, and any updrafts that do become established in these areas will be capable of producing strong winds. Moisture levels will continue to increase tomorrow and peak on Tuesday, which also looks to be the best day for showers and thunderstorms as the inverted trough lifts across the area. The exact location of activity each day will largely depend on remnant cloud cover from the previous day's convection which will dictate where the best surface heating can occur, helping to uncap the lower atmosphere. Heavy rainfall and potential flash flooding will continue to be the primary concern with any storms through Tuesday. One good side effect of the increased moisture, cloud cover, and precipitation is cooler temperatures, with most areas seeing near to below-normal temperatures during the first half of the week. By Wednesday afternoon, convection should be more limited and confined to northern Mohave and Lincoln counties as the trough lifts out of the region. High pressure will rebuild over the area for the end of the week ending rain chances and allowing temperatures to climb back to near or slightly above normal levels once again. Areas of haze can also be expected across eastern California and southern Nevada over the next few days as smoke generated by the York Fire in the Mojave Preserve drifts across the area. && .AVIATION...For Harry Reid...Outside of any convective influence, south to southwest winds will gust to 15-20KT this the afternoon and evening before dropping off shortly after sunset. After sunset, low confidence in the wind forecast as convection may influence wind patterns and there is significant amount of unknowns in the overall forecast for tonight and Monday. Current forecast would support southeast winds at around 10KT developing between 09Z- 12Z, then breezy south to southeast winds with gusts 15-20KT possible expected Monday afternoon. Convection is expected to develop on the terrain southeast of the valley this afternoon and then continue through at least the early evening. Low risk (20%) for thunderstorms to move into the valley today and impact the terminals, especially after 00Z. Any nearby storm today could produce gusty outflow winds in excess of 30KT. While any direction is possible with these outflow winds, the most likely direction through the afternoon would be from the south or southeast, then from the southeast or east this evening. CIGs to 10kft and brief moderate to heavy rain would be possible if storms moved over the terminals. Convection should diminish tonight before another round of thunderstorms develops Monday afternoon. Monday's storms will be more widespread and further west than the past few days. Southwesterly winds will continue to transport smoke/haze from the York Fire, located in the Mojave National Preserve, into the Las Vegas Valley. Surface visibility impacts are not expected. However slant range visibility will be impacted. For the rest of southern Nevada, northwest Arizona and southeast California...Convection is expected this afternoon and evening through southern Nevada, eastern San Bernardino County, and western Arizona. Erratic gusty outflow winds from vicinity thunderstorms will be possible this afternoon and evening at all TAF sites except for BIH. Convection should wane after 06Z, however there is a low probability that showers and isolated thunderstorms continue through Monday morning in Clark and MOhave counties. Westerly/southwesterly winds across the Mojave Desert will continue to transport smoke/haze into the Las Vegas Valley; reducing slant range visibility at times through far Southern Nevada into the Colorado River Valley. Outside of any convective influence, south to southwest winds are expected today. Gusts are possible but should be slightly lower than yesterday. Winds will become diurnal for a period overnight before a push of south to southeast winds may move up the Colorado River Valley into western Arizona and southern Nevada tonight and Monday morning. Wind speeds to around 10KT and gusts 15-20KT will be possible with this push of winds. If this does not occur, diurnal wind trends are expected through Monday morning. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && DISCUSSION...Planz AVIATION...Nickerson For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
The national radar mosaic for the moment the first event began.
1 strong wind. Local standard time, as filed.
A landspout was photographed in open desert south of Interstate 40, near 34.6900 -116.3132. No damage occurred.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2023Every state in 2023This day in weather historyWarnings in California, July 2023
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: 1119339.