Alert archive / California / Winter Storm Warnings in 2013
Winter Storm Warning 6, NWS San Diego, CA
NWS San Diego, CA issued this winter storm warning at Dec 6, 2013, 1:09 PM PST for Riverside County, San Bernardino County, San Diego County, California. It took effect at Dec 7, 2013, 10:00 AM PST. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 6, 2013, 1:09 PM PST (21:09 UTC)
- In effect from
- Dec 7, 2013, 10:00 AM PST
- Expired
- Dec 7, 2013, 8:57 PM PST
- In force
- 11 hr
- Issued by
- NWS San Diego, CA
Counties Riverside County, CA, San Bernardino County, CA, San Diego County, CA
The radar
The Santa Ana Mts radar (KSOX), 122 km from the middle of the area, began a volume at 21:22 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 12:00Z, 9.2 hours before the alert went out and 145 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
- 1 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1112 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Diego, CA wrote its last area forecast discussion before this winter storm warning went out at Dec 6, 9:23 AM PST, 3 hours 46 minutes earlier.
Area forecast discussion, Dec 6, 9:23 AM PST, 3 hours 46 minutes before
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</html>The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 5, 5:24 PM PST | Frost Advisory | SGX | Riverside, San Bernardino, San Diego | 16 hr |
| Dec 6, 2:16 AM PST | Small Craft Advisory | SGX | 57 hr | |
| Dec 6, 9:08 AM PST | High Wind Warning | SGX | Riverside, San Bernardino, San Diego | 40 hr |
Nearby
Winter Storm Warnings in California, 2013Every winter storm warning in 2013
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.