Nevada, 2024

Excessive Heat in Nevada, June 11 to 12, 2024

June 11 to 12, 2024 · NWS VEF · 4 events in 4 counties and zones

High pressure developed over the Desert Southwest, bringing excessive heat to the area.

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
10
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
4

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.

What happened

The episode as NWS VEF wrote it up.

High pressure developed over the Desert Southwest, bringing excessive heat to the area.

What forecasters said that day

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 11, 12:52 AM PST, 8 hours 8 minutes earlier.

Area forecast discussion, Jun 11, 12:52 AM PST, 8 hours 8 minutes before
Area Forecast Discussion
National Weather Service Las Vegas NV
152 AM PDT Tue Jun 11 2024

.SYNOPSIS...Areas of excessive heat will be the main weather concern
through Wednesday as a ridge builds over the region. A weak weather
system moving through Thursday and Friday will allow for slight
cooling and an increase in surface winds...but temperatures will
remain above normal through the weekend. Uncertainty increases next
week with potential for breezy conditions and possibly a more
noteworthy cool down.
&&

.SHORT TERM...through Friday.

A spike in temperatures will occur today through Wednesday under a
ridge amplifying over the Desert Southwest while a large cutoff low
circulates southwest of San Diego. Highs will increase 4-5 degrees
across our region today then another 1-2 degrees Wednesday leading
to major HeatRisk across portions of Mohave, Clark, southern Nye and
Inyo counties. Temperatures will approach 110 degrees again in Las
Vegas Wednesday. The Excessive Heat Warning for these areas remains
in effect from 10 am today through 9 pm Wednesday evening.

The cutoff low will eventually reconnect with increasing southwest
flow aloft and slowly lift inland Thursday. The center of the low
will traverse the area between Las Vegas and Yuma Thursday night
before moving over Arizona and the Four Corners on Friday. The
circulation will manage to bring limited moisture up through western
Arizona Thursday leading to a 15-20 percent chance of thunderstorms
over northeast Mohave County late in the afternoon and evening. The
rest of the region will remain dry with high temperatures pulling
back a few degrees, but holding several degrees above normal. South
winds 10-15 mph gusting 20-30 mph will develop across most of the
region Thursday as the upper low moves inland.

.LONG TERM...This Weekend and Early Next Week.

The weather pattern is expected to transition late this weekend and
early next week as we lose the influence of the ridge. Low
confidence in how everything sets up synoptically though as there
are significant differences in long range model camps on how an
incoming trough will interact with the weakening ridge. Many models
have some flavor of the trough digging south into the region from
the Pacific Northwest, however there are differences in how deep the
trough digs and how quickly it will continue its eastward
progression. Increasing confidence there will be some type of
cooling trend but unsure what temperatures will look like. NBM
ensemble high temperature spread for that time period is very large
with anything from near normal to well below normal, especially
early next week.

Depending on the exact setup of the trough, winds could increase as
well. Currently, there are some ensemble members of 40 MPH or higher
gusts on area meteograms for Sunday into early next week, so the
chance for impactful winds is non-zero. More notable, with dry
conditions and the potential for increasing winds, fire danger would
increase. SPC fire weather outlooks highlight a 40% potential for
increased fire danger on Saturday and Sunday in portions of southern
Nevada into western Arizona. Will need to monitor wind and fuel
trends in case fire danger rapidly increases.
&&

.AVIATION...For Harry Reid...Expecting a predominantly light and
diurnal wind pattern through the TAF period, with east/southeast
winds during the day and south/southwest at night. Speeds generally
in the 5-8 knot range, with a 20% chance of 10+ knots at times this
afternoon and evening. Clear skies.

For the rest of southern Nevada, northwest Arizona and southeast
California...Light and diurnal winds anticipated at all of the area
TAF sites today and tonight. Sustained winds should peak around 8-12
knots this afternoon and evening, with occasional gusts up to 16
knots possible. Mostly clear skies as just a few mid-level and high
clouds linger over the lower Colorado River Valley and KBIH.
&&

.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather or impacts according to standard operating
procedures.

&&

SHORT TERM...Adair
LONG TERM...Nickerson
AVIATION...Woods

For more forecast information...see us on our webpage:
https://weather.gov/lasvegas or follow us on Facebook and Twitter

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

4 excessive heat. Local standard time, as filed.

Excessive Heat, Northeast Clark

When
June 11, 9:00 AM PST to June 12, 8:00 PM PST
Where
Northeast Clark forecast zone
Reported by
Official NWS Observations
Coordinates
36.215, -115.014 (the zone’s center; the record gives no point)

Excessive Heat Warning criteria were reached on two straight days.

Excessive Heat, Western Clark/Southern Nye

When
June 11, 9:00 AM PST to June 12, 8:00 PM PST
Where
Western Clark/Southern Nye forecast zone
Reported by
Official NWS Observations
Coordinates
37.129, -115.743 (the zone’s center; the record gives no point)

Excessive Heat Warning criteria were reached on two straight days.

Excessive Heat, Las Vegas Valley

When
June 11, 9:00 AM PST to June 12, 8:00 PM PST
Where
Las Vegas Valley forecast zone
Deaths
2 direct, 8 indirect
Reported by
Official NWS Observations
Coordinates
36.215, -115.014 (the zone’s center; the record gives no point)

Excessive Heat Warning criteria were reached on two straight days. During and after the excessive heat, ten people died in Las Vegas of heat-related causes.

Excessive Heat, Lake Mead/Lake Mohave National Recreation Area

When
June 11, 9:00 AM PST to June 12, 8:00 PM PST
Where
Lake Mead/Lake Mohave National Recreation Area forecast zone
Reported by
Official NWS Observations

Excessive Heat Warning criteria were reached on two straight days.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Excessive Heat, Las Vegas Valley2024-06-1252FemaleUnknownIndirect
Excessive Heat, Las Vegas Valley2024-06-1354MaleUnknownDirect
Excessive Heat, Las Vegas Valley2024-06-1425MaleUnknownIndirect
Excessive Heat, Las Vegas Valley2024-06-1484MaleUnknownIndirect
Excessive Heat, Las Vegas Valley2024-06-1564MaleUnknownDirect
Excessive Heat, Las Vegas Valley2024-06-1548MaleUnknownIndirect
Excessive Heat, Las Vegas Valley2024-06-1538MaleUnknownIndirect
Excessive Heat, Las Vegas Valley2024-06-1648MaleUnknownIndirect
Excessive Heat, Las Vegas Valley2024-06-1635MaleUnknownIndirect
Excessive Heat, Las Vegas Valley2024-06-1765MaleUnknownIndirect

What these are

Excessive Heat
Heat at or above the local excessive heat warning criteria, or heat that caused deaths.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Nevada in 2024Every state in 2024This day in weather historyWarnings in Nevada, June 2024

Sources

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: 1182316, 1182317, 1182318, 1182319.