Alert archive / California / Freeze Watches in 2017
Freeze Watch 2, NWS Las Vegas, NV
NWS Las Vegas, NV issued this freeze watch at Dec 3, 2017, 2:27 AM PST for Clark County, Nevada; Inyo County, San Bernardino County, California. It took effect at Dec 5, 2017, 12:00 AM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 3, 2017, 2:27 AM PST (10:27 UTC)
- In effect from
- Dec 5, 2017, 12:00 AM PST
- Expired
- Dec 4, 2017, 9:08 AM PST
- In force
- Issued by
- NWS Las Vegas, NV
Counties Inyo County, CA, San Bernardino County, CA, Clark County, NV
The radar
The Las Vegas radar (KESX), 119 km from the middle of the area, began a volume at 10:32 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
Las Vegas, NV (KVEF), launched 00:00Z, 10.5 hours before the alert went out and 83 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
- 2829 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 204 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this freeze 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 freeze watch went out at Dec 2, 6:38 PM PST, 7 hours 49 minutes earlier.
Area forecast discussion, Dec 2, 6:38 PM PST, 7 hours 49 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 |
|---|---|---|---|---|
| Dec 3, 2:27 AM PST | Wind Advisory | VEF | 4 days | |
| Dec 3, 1:46 PM PST | Hard Freeze Watch | VEF | Esmeralda, Lincoln, Nye | 19 hr |
| Dec 3, 1:46 PM PST | Hard Freeze Warning | VEF | Esmeralda, Lincoln, Nye | 19 hr |
Nearby
Freeze Watches in California, 2017Freeze Watches in Nevada, 2017Every freeze watch in 2017
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.