Heavy rain from Tropical Storm Rachel's remnants hit the Las Vegas valley Sunday morning, October 11, 2026, with more than an inch falling on the west side before dawn and about half an inch on the east side, according to KTNV.

Harry Reid International Airport recorded 1.08 inches of rain, breaking the previous daily record of 0.78 inches set in 2012. The Review-Journal, citing the National Weather Service's Las Vegas office, reports the total also tied the all-time October daily record from Oct.

12, 1947. The rain prompted flash flood warnings across the west valley, with cameras capturing cars stranded in floodwaters near Koval Lane and Winnick Avenue, flooding behind The LINQ on the Strip, and heavy runoff near Hotel Rio.

The striking detail for weather watchers is that the 1.08-inch total tied an October record that had stood since 1947 — a mark set when the valley's climate record was still young.

The storm's arrival was also uncharacteristic of the season: the Review-Journal noted Las Vegas had received just 1.1 inches of rain all year before Sunday, 2.1 inches below normal to date.

Rachel had slammed Southern California over the weekend first, battering the coast with high surf, before its remnants swung inland.

Rainfall on Sunday concentrated in the west and northwest valley — Review-Journal-reported NWS data showed Summerlin areas topping 1.5 inches and Floyd Lamb State Park averaging 2.7 inches, while Kyle and Lee Canyons in the Spring Mountains netted more than two inches.

The flooding had immediate, tangible consequences across Southern Nevada. According to the Review-Journal, storms led to roughly 10 water rescues in Las Vegas by early Sunday afternoon.

All lanes on Primm Boulevard at Interstate 15 near the Nevada-California state line were closed due to flooding, per RTC information reported by KTNV.

Harry Reid International Airport saw 48 flights canceled and 618 delayed as of early Sunday evening, with weather contributing to delays averaging about 50 minutes, per the Review-Journal's citations of FlightAware and the FAA.

The Age of Chivalry Renaissance Festival at Sunset Park canceled its entire Sunday schedule over dangerous wind conditions, with Clark County Parks and Recreation director Patrick Almeido calling the risks ones the county 'simply cannot take.'

The wet pattern is not over. A Flood Watch and Wind Advisory remained in effect through 5 a.m.

Monday, with south winds of 15 to 25 mph and gusts to 40 mph expected, capable of downing tree limbs and causing power outages, per the Review-Journal's account of National Weather Service advisories.

Forecasters expect showers to linger into the week as a cold front from the Pacific Northwest interacts with Rachel's remnants: a 50 percent chance of rain Monday and 30 percent Tuesday, with Tuesday's high of 71 degrees more than 10 degrees below normal and cooler-than-normal lows in the 50s persisting through next week.

KTNV's meteorologists added a chance of afternoon showers and thundershowers Sunday, tapering to an outside chance of rain in the evening.