Nevada, 2018

Heat in Nevada, September 7 to 9, 2018

September 7 to 9, 2018 · NWS VEF · 2 events in 2 counties and zones

Three people died in southern Nevada 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
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The toll

Deaths
3
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

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.

Three people died in southern Nevada 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 6, 8:13 PM PST, 3 hours 47 minutes earlier.

Area forecast discussion, Sep 6, 8:13 PM PST, 3 hours 47 minutes before
Area Forecast Discussion
National Weather Service Las Vegas NV
913 PM PDT Thu Sep 6 2018

.EVENING UPDATE...
Calm and benign pattern expected through the overnight. Not much
change to the forecast grids with the evening update, just removed
any higher terrain PoPs that still existed through 18Z tomorrow.
Winds should stay light and variable with skies clearing through
the overnight.

&&

.AVIATION UPDATE...For McCarran...Gusty winds have subsided for
the most part this evening. Expecting winds to stay light and
variable through the overnight period. A few lingering clouds at
12kft will persist through about midnight before becoming SKC.
Winds will eventually shift to light and generally out of the east
and southeast tomorrow afternoon but still stay below 8kts in
general. An occasional periodic gust to 15 kts can't be ruled out.

For the rest of southern Nevada, northwest Arizona and southeast
California...Benign weather pattern expected with high pressure
aloft. Typical diurnal wind pattern expected for all sites with
SKC or FEW at best expected.

&&

.PREV DISCUSSION... /issued at 203 PM PDT Thu Sep 6 2018/

.SYNOPSIS...An area of high pressure off the southern California
Coast will move inland and bring dry northwest flow aloft along with
above normal temperatures during the weekend. A dry weather pattern
over the region will persist through the middle of next week,
although it will become windy.
&&

.SHORT TERM...Tonight through Saturday night.

Quiet weather is expected through Saturday. Dry westerly flow with
building high pressure at the surface will result in dry weather
with no precipitation expected after this evening. Less cloud cover
is expected on Friday and Saturday than today as well dry out the
midlevels for the end of the week.

Temperatures will be main focus as high temperatures gradually
increase each day and then peaking on Saturday. A blend of the best
performing models for temperatures in the 48hour range made little
change to high or low temperatures. Temperatures will be borderline
higher impact as we will be running about 10 degrees above normal
and pushing record territories, however the heat looks to be short
lived and humidity will be low. WIll not be issuing any heat
warnings at this time.

&&

.LONG TERM...Sunday through Thursday.

No major changes to the long term forecast. Drier and warmer-than-
average conditions persist as a strong area of high pressure moves
inland off the southern coast of California, keeping PoPs from the
forecast. Late Sunday evening through the overnight hours, the high
pressure will begin to weaken as a trough develops from the Pacific
Northwest. As the trough deepens, temperatures will cool and
approach seasonal norms through next week. Meanwhile, beginning
Tuesday, the region will inherit a strong southwesterly flow with
sustained wind speeds hovering between 20-30 mph. Long-range models
suggest reentering PoPs for the far eastern portions of our CWA into
the forecast as a result of the digging trough for the latter half
of next week. Confidence is low at this time.
&&

.CLIMATE...Record high temperatures possible across parts of the
region Saturday.

Location           Fcst High       Record High/Year      Normal High

Las Vegas, NV        106               110/1979             97
Bishop, CA            99               100/1979             91
Death Valley, CA     118               118/2012            109
Barstow-Daggett, CA  108               107/1999             97
Needles, CA          113               113/1979            104
Kingman, AZ           99               105/1915             90
&&

.AVIATION....AVIATION...For McCarran...Tranquil weather is in
store through the weekend as an area of high pressure builds
over southern Nevada. Diurnal winds generally less than 8 knots
can be expected through Friday with only a few afternoon clouds
with bases near 12 kft.

For the rest of southern Nevada, northwest Arizona and southeast
California...Isolated light showers near the southwest Utah border
will dissipate early this evening. An area of high pressure building
over the region will provide tranquil weather conditions through the
weekend generally light winds and only few-sct clouds with bases
12-14 kft MSL.&&

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

EVENING UPDATE...TB3
SHORT TERM...Wolf
LONG TERM....Varian
AVIATION...Adair

&&

For more forecast information...see us on our webpage:

http://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

2 heat. Local standard time, as filed.

Heat, Las Vegas Valley

When
September 7, 12:00 AM PST to 11:59 PM PST
Where
Las Vegas Valley forecast zone
Deaths
2 direct, 0 indirect
Reported by
County Official
Coordinates
36.215, -115.014 (the zone’s center; the record gives no point)

Two people died in Las Vegas of heat related causes.

Heat, Lake Mead/Lake Mohave National Recreation Area

When
September 9, 12:00 AM PST to 11:59 PM PST
Where
Lake Mead/Lake Mohave National Recreation Area forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official

One person died 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 Valley2018-09-0785MalePermanent HomeDirect
Heat, Las Vegas Valley2018-09-0771MalePermanent HomeDirect
Heat, Lake Mead/Lake Mohave National Recreation Area2018-09-0941MaleOutside/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 2018Every state in 2018This day in weather historyWarnings in Nevada, September 2018

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: 783402, 783403.