Nevada, 2019

Excessive Heat in Nevada, August 14 to 16, 2019

August 14 to 16, 2019 · NWS VEF · 5 events in 5 counties and zones

Excessive Heat Warning criteria were reached in much of Clark County and southern Nye County.

Where it happened

Every event with a place to put it; 4 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
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
5

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.

Excessive Heat Warning criteria were reached in much of Clark County and southern Nye County.

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 Aug 14, 3:24 AM PST, 7 hours 36 minutes earlier.

Area forecast discussion, Aug 14, 3:24 AM PST, 7 hours 36 minutes before
Area Forecast Discussion
National Weather Service Las Vegas NV
424 AM PDT Wed Aug 14 2019

.SYNOPSIS...Dry conditions, sunny skies, and above normal
temperatures can be expected through Friday. Heat will reach
dangerous levels across portions of the lower elevations in
southeast California, southern Nevada, and northwest Arizona today
through Friday. Temperatures will come back down closer to normal
this weekend as a trough approaches the area. This will also lead to
widespread breezy conditions Friday through Sunday.&&

.DISCUSSION...Today through next Wednesday.

Ridge of high pressure will be overhead today increasing
temperatures to dangerous levels. Heat remains the primary concern
through Friday before troughiness across the western CONUS suppresses
the ridge through the weekend and into early next week.

Over the next few days, temperatures will be 8-12 degrees above
seasonal normals. As a result, an Excessive Heat Warning will be in
effect from 8AM today through 8PM Friday for the lower elevations
of Clark and Mohave County, southeastern San Bernardino, the lower
Colorado River Valley, and Death Valley. Peak heating is expected
Thursday across the region, and even across portions of Lincoln
County where a Heat Advisory will be in effect 8AM Thursday through
8PM Friday, where abnormally warm temperatures will be possible. As
a trough begins to dive across the northern Great Basin region
Friday, breezy to gusty winds will increase in response to the
increased pressure gradients. Additional weak shortwaves will dig
across the region through the weekend keeping breezy afternoon winds
around and further suppressing the expansive ridge to the southeast,
allowing temperatures to dip to slightly above normals. Through
Monday and into Tuesday, the ridge will begin to shift back across
Arizona increasing temperatures again by the middle of next week.

As far as monsoon moisture goes, no clear signals point to the
return of moisture over the next 7 days. Though, medium range
ensembles indicate possible increase in moisture across northwest
AZ by late next week, but details are unclear this far out. &&

.AVIATION...For McCarran...Another day of light winds expected
with minimal impacts to the terminal other than easterly winds
during the afternoon hours. Winds stayed southeasterly yesterday
until about 05Z and expect similar timing again today per latest
models. After 05Z tonight, a shift to a southwest orientation but
remaining generally below 10 kts. Skies will remain SKC throughout
the TAF period.

For the rest of southern Nevada, northwest Arizona and southeast
California...Minimal impacts expected again today as high
pressure dominates the region resulting in light winds for the
majority of the region. KDAG will follow this trend with the
exception of an surge in southwest wind gusts late tonight for a
few hours. Otherwise, no other significant weather impacts to
terminals expected. Skies to remain SKC throughout the TAF period.
&&

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

DISCUSSION...Kryston
AVIATION...TB3

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

5 excessive heat. Local standard time, as filed.

Excessive Heat, Northeast Clark

When
August 14, 11:00 AM PST to August 16, 9:00 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 in northeast Clark County.

Excessive Heat, Western Clark/Southern Nye

When
August 14, 11:00 AM PST to August 16, 9:00 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 in western Clark and southern Nye counties.

Excessive Heat, Las Vegas Valley

When
August 14, 11:00 AM PST to August 16, 9:00 PM PST
Where
Las Vegas Valley 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 in the Las Vegas Valley.

Excessive Heat, Lake Mead/Lake Mohave National Recreation Area

When
August 14, 11:00 AM PST to August 16, 9:00 PM PST
Where
Lake Mead/Lake Mohave National Recreation Area forecast zone
Reported by
Official NWS Observations

Excessive Heat Warning criteria were reached in the Lake Mead National Recreation Area.

Excessive Heat, Southern Clark

When
August 14, 11:00 AM PST to August 16, 9:00 PM PST
Where
Southern 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 in southern Clark County.

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 2019Every state in 2019This day in weather historyWarnings in Nevada, August 2019

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: 840020, 840021, 840022, 840023, 840024.