Alert archive / California / Frost Advisories in 2013
Frost Advisory 3, NWS San Diego, CA
NWS San Diego, CA issued this frost advisory at Jan 11, 2013, 4:29 AM PST for Riverside County, San Bernardino County, San Diego County, California. It took effect at Jan 12, 2013, 12:00 AM PST. It was in force for 33 hr.
The area
The counties it named.
The facts
- Issued
- Jan 11, 2013, 4:29 AM PST (12:29 UTC)
- In effect from
- Jan 12, 2013, 12:00 AM PST
- Expired
- Jan 13, 2013, 9:00 AM PST
- In force
- 33 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 12:28 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, 0.5 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1578 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this frost advisory 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 frost advisory went out at Jan 11, 3:30 AM PST, 59 minutes earlier.
Area forecast discussion, Jan 11, 3:30 AM PST, 59 minutes before
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</html>Hazardous weather outlook, Jan 11, 4:00 AM PST, 29 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 |
|---|---|---|---|---|
| Jan 11, 4:29 AM PST | Freeze Watch | SGX | Riverside, San Bernardino, San Diego | 13 hr |
| Jan 11, 1:40 PM PST | Freeze Warning | SGX | Riverside, San Bernardino, San Diego | 43 hr |
Nearby
Frost Advisories in California, 2013Every frost advisory 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.