Alert archive / California / Snow Advisories in 2008
Snow Advisory 11, NWS Medford, OR
NWS Medford, OR issued this snow advisory at Feb 22, 2008, 3:27 PM PST for Modoc County, Siskiyou County, California. It took effect at Feb 23, 2008, 4:00 PM PST. It was in force for 29 hr.
The area
The counties it named.
The facts
- Issued
- Feb 22, 2008, 3:27 PM PST (23:27 UTC)
- In effect from
- Feb 23, 2008, 4:00 PM PST
- Expired
- Feb 24, 2008, 8:48 PM PST
- In force
- 29 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Siskiyou County, CA
The radar
The Medford radar (KMAX), 105 km from the middle of the area, began a volume at 23:24 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
Reno, NV (KREV), launched 12:00Z, 11.5 hours before the alert went out and 367 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
- 4 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 528 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this snow advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Medford, OR wrote its last area forecast discussion before this snow advisory went out at Feb 22, 8:39 AM PST, 6 hours 48 minutes earlier.
Area forecast discussion, Feb 22, 8:39 AM PST, 6 hours 48 minutes before
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</html>Hazardous weather outlook, Feb 22, 12:11 AM PST, 15 hours 16 minutes before
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Local storm report, Feb 22, 2:18 PM PST, 1 hour 9 minutes before
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</html>The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 3:27 PM PST | Winter Storm Warning | MFR | Siskiyou | 47 hr |
Nearby
Snow Advisories in California, 2008Every snow advisory in 2008
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.