Alert archive / Nevada / Excessive Heat Watches in 2021
Excessive Heat Watch 5, NWS Las Vegas, NV
NWS Las Vegas, NV issued this excessive heat watch at Aug 2, 2021, 1:52 AM PDT for Clark County, Nye County, Nevada; San Bernardino County, California; Mohave County, Arizona. It took effect at Aug 3, 2021, 10:00 AM PDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Aug 2, 2021, 1:52 AM PDT (08:52 UTC)
- In effect from
- Aug 3, 2021, 10:00 AM PDT
- Expired
- Aug 2, 2021, 12:48 PM PDT
- In force
- Issued by
- NWS Las Vegas, NV
Counties Mohave County, AZ, San Bernardino County, CA, Clark County, NV, Nye County, NV
The radar
The Las Vegas radar (KESX), 69 km from the middle of the area, began a volume at 08:53 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 8.9 hours before the alert went out and 339 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 916 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1422 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
What forecasters said that day
The local office's own words before this excessive heat watch went out, 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 this excessive heat watch went out at Aug 2, 1:32 AM PDT, 20 minutes earlier.
Area forecast discussion, Aug 2, 1:32 AM PDT, 20 minutes before
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</html>The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 12:48 PM PDT | Excessive Heat Warning | VEF | Clark, Nye | 3 days |
Nearby
Excessive Heat Watches in Nevada, 2021Excessive Heat Watches in California, 2021Excessive Heat Watches in Arizona, 2021Every excessive heat watch in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.