Alert archive / Nevada / High Wind Watches in 2009
High Wind Watch 14, NWS Las Vegas, NV
NWS Las Vegas, NV issued this high wind watch at Dec 21, 2009, 4:12 AM PST for Clark County, Esmeralda County, Nye County, Nevada; Inyo County, San Bernardino County, California. It took effect at Dec 22, 2009, 12:00 AM PST. It was in force for 53 min.
The area
The counties it named.
The facts
- Issued
- Dec 21, 2009, 4:12 AM PST (12:12 UTC)
- In effect from
- Dec 22, 2009, 12:00 AM PST
- Expired
- Dec 22, 2009, 12:53 AM PST
- In force
- 53 min
- Issued by
- NWS Las Vegas, NV
Counties Inyo County, CA, San Bernardino County, CA, Clark County, NV, Esmeralda County, NV, Nye County, NV
The radar
The Las Vegas radar (KESX), 184 km from the middle of the area, began a volume at 12:16 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
Mercury/Desert R, NV (KDRA), launched 12:00Z, 0.2 hours before the alert went out and 49 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
- 1872 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high wind 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 high wind watch went out at Dec 20, 9:00 PM PST, 7 hours 12 minutes earlier.
Area forecast discussion, Dec 20, 9:00 PM PST, 7 hours 12 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 21, 2:59 PM PST | Wind Advisory | VEF | Clark, Esmeralda, Nye | 33 hr |
Nearby
High Wind Watches in Nevada, 2009High Wind Watches in California, 2009Every high wind watch in 2009
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.