Alert archive / Nevada / Excessive Heat Warnings in 2020
Excessive Heat Warning 8, NWS Las Vegas, NV
NWS Las Vegas, NV issued this excessive heat warning at Aug 23, 2020, 2:42 AM PDT for Clark County, Nye County, Nevada; San Bernardino County, California; Mohave County, Arizona. It took effect at Aug 24, 2020, 10:00 AM PDT. It was in force for 3 days. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 23, 2020, 2:42 AM PDT (09:42 UTC)
- In effect from
- Aug 24, 2020, 10:00 AM PDT
- Expired
- Aug 27, 2020, 8:00 PM PDT
- In force
- 3 days
- 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 09:44 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, 9.7 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3008 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 200 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this excessive heat warning 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 warning went out at Aug 23, 2:16 AM PDT, 26 minutes earlier.
Area forecast discussion, Aug 23, 2:16 AM PDT, 26 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 23, 12:23 PM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Aug 23, 1:58 PM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Aug 23, 3:11 PM PDT | Flash Flood Warning | VEF | Nye | 3 hr |
| Aug 23, 3:46 PM PDT | Flash Flood Warning | VEF | Clark, Nye | 2 hr |
| Aug 22, 5:55 PM PDT | Flash Flood Warning | VEF | Mohave | 3 hr |
| Aug 23, 3:00 PM PDT | Severe Thunderstorm Warning | VEF | Mohave | 45 min |
| Aug 23, 4:26 PM PDT | Areal Flood Advisory | VEF | Mohave | 88 min |
Nearby
Excessive Heat Warnings in Nevada, 2020Excessive Heat Warnings in California, 2020Excessive Heat Warnings in Arizona, 2020Every excessive heat warning in 2020
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.