Alert archive / California / High Wind Watches in 2017
High Wind Watch 8, NWS Los Angeles, CA
NWS Los Angeles, CA issued this high wind watch at Dec 2, 2017, 7:41 PM PST for Los Angeles County, California. It took effect at Dec 4, 2017, 3:00 AM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 2, 2017, 7:41 PM PST (03:41 UTC)
- In effect from
- Dec 4, 2017, 3:00 AM PST
- Expired
- Dec 3, 2017, 2:36 PM PST
- In force
- Issued by
- NWS Los Angeles, CA
County Los Angeles County, CA
The radar
The Santa Ana Mts radar (KSOX), 71 km from the middle of the area, began a volume at 03:44 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
San Diego, CA (KNKX), launched 00:00Z, 3.7 hours before the alert went out and 184 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
- 2155 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 8 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 Los Angeles, CA wrote its last area forecast discussion before this high wind watch went out at Dec 2, 4:18 PM PST, 3 hours 23 minutes earlier.
Area forecast discussion, Dec 2, 4:18 PM PST, 3 hours 23 minutes before
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</html>The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 2, 7:41 PM PST | Freeze Watch | LOX | Santa Barbara | 42 hr |
| Dec 2, 7:41 PM PST | Hard Freeze Watch | LOX | 42 hr | |
| Dec 2, 8:18 PM PST | Gale Watch | LOX | 6 hr | |
| Dec 3, 2:21 AM PST | Beach Hazards Statement | LOX | 9 hr | |
| Dec 3, 4:12 AM PST | Wind Advisory | LOX | Los Angeles | 5 days |
| Dec 3, 2:36 PM PST | Frost Advisory | LOX | 17 hr | |
| Dec 3, 2:36 PM PST | Freeze Warning | LOX | Santa Barbara | 17 hr |
| Dec 3, 2:36 PM PST | High Wind Warning | LOX | Los Angeles | 4 days |
Nearby
High Wind Watches in California, 2017Every high wind 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.