Nevada, 2021

Heat in Nevada, September 1, 2021

September 1, 2021 · NWS VEF · 1 event in 1 county or zone

One person died in Las Vegas of heat related causes.

Where it happened

Every event with a place to put it; 1 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
1
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

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.

One person died in Las Vegas of heat related causes.

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 Sep 1, 12:48 AM PST, 11 hours 12 minutes earlier.

Area forecast discussion, Sep 1, 12:48 AM PST, 11 hours 12 minutes before
Area Forecast Discussion
National Weather Service Las Vegas NV
148 AM PDT Wed Sep 1 2021

.SYNOPSIS...Moisture from the remnants of Nora will lead to a risk
of heavy rain across northwest Arizona through Wednesday. Deep
moisture exits to the east later this week for decreasing chances
for thunderstorms. However, that may be brief as moisture and storm
chances could return by the end of the holiday weekend.
&&

.SHORT TERM...through Friday night.

Latest focus for heavy rain/flash flooding has been across
northwestern Mohave County; from the Virgin Mountains then south
along the Shivwits Plateau. The pockets of heavy rain that lead to
flash flooding that occurred across southern Mohave County have
diminished.

Broad trough across the area progged to slowly shift east across
Mohave County today, before continuing east into the Four Corner
tonight. Mohave County, especially the northern half of the county
will remain quite active through at least mid-day before dynamics
start to wane. As for the Flash Flood Watches. Will keep the watch
going for the Lake Mead NRA and Mohave County. Will allow the watch
to expire as scheduled at 2 am for our California zones. Will cancel
the watch for southern Clark County as remaining threat for heavy
rain exists across northwest Arizona. Elsewhere today, isolated to
scattered showers and thunderstorms will be possible across Lincoln,
Clark and northeast San Bernardino Counties. Further west, it will
remain dry with pockets of smoke and haze from the California
wildfires.

With drier and more stable air spreading in from the west tonight we
probably will be able to cancel the Flash Flood Watch for Mohave
County before Thursday morning. But will allow the day or evening
shift to make the call based on active it is later this afternoon.

That drier air will lead to lower chances for showers and
thunderstorms Thursday and Friday. Meanwhile, temperatures will rise
back to early September seasonable normals. Of course, smoke/haze
will stay a concern.

.LONG TERM...Saturday through Wednesday.

Both the GFS and ECMWF ensembles show a broad area of high pressure
extending from southern Nevada back towards New Mexico remaining in
place through the weekend maintaining dry conditions across the
region.  As the high becomes more centered over Southern Nevada/
Arizona late Sunday and early next week, temperatures will warm to a
few degrees above normal. By mid-week, the center of the high should
retrograde back east towards the four corners region. This will
cause upper levels winds to turn more southeasterly and allow a
modest increase in moisture levels. The latest model runs have
backed off some on the moisture return and precipitation now looks
to be more isolated than in previous runs, with Mohave and
southeastern San Bernardino counties seeing the best chances of
thunderstorms.

&&

.AVIATION...For McCarran...East-northeast wind favored through
the morning and afternoon. Wind speeds should be 10 kts or less; but
could rise to around 12 kts at times. There may also be a VCSH
through about 15Z with ceiling around 10-12 kft. Ceilings will
scatter out through morning with the lowest clouds around 8-10 kft
this afternoon. Most guidance supports a shift to a southeast wind
around 00Z. Speeds will range between 8-12 kts with gusts into the
upper teens possible.

For the rest of southern Nevada, northwest Arizona and southeast
California...Scattered to widespread showers and thunderstorms will
cover Lincoln County and northwest Arizona today. Lower ceilings
will obscure mountain tops while heavy rain will lower visibility's.
Elsewhere, storms will be isolated across Clark and northeast San
Bernardino Counties. Showers and thunderstorms will dissipate this
evening as an area of low pressure moves east toward the Four
Corners.

Further northwest, haze from distant wildfire smoke will reduce
slant range visibility at times, especially across the Sierra and
parts of the southern Great Basin. Not anticipating smoke/haze to
impact KBIH surface visibility during this forecast period.

&&

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

SHORT TERM/AVIATION...Pierce
LONG TERM...Planz

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

1 heat. Local standard time, as filed.

Heat, Las Vegas Valley

When
September 1, 12:00 PM PST
Where
Las Vegas Valley forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
36.215, -115.014 (the zone’s center; the record gives no point)

One person died in Las Vegas of heat related causes.

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
Heat, Las Vegas Valley2021-09-0168MaleOutside/Open AreasDirect

What these are

Heat
Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

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

The same day elsewhere

More

Every storm in Nevada in 2021Every state in 2021This day in weather historyWarnings in Nevada, September 2021

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: 984957.