Alert archive / Oregon / Snow Advisories in 2008

Snow Advisory 8, NWS Medford, OR

January 30, 20087 counties in Oregon; Modoc County, Siskiyou County, California

NWS Medford, OR issued this snow advisory at Jan 30, 2008, 2:57 PM PST for 7 counties in Oregon; Modoc County, Siskiyou County, California. It took effect at Jan 30, 2008, 10:00 PM PST. It was in force for 23 hr.

The area

The counties it named.

The facts

Issued: Jan 30, 2008, 2:57 PM PST (22:57 UTC)
In effect from: Jan 30, 2008, 10:00 PM PST
Expired: Jan 31, 2008, 8:55 PM PST
In force: 23 hr
Issued by: NWS Medford, OR

Counties Modoc County, CA, Siskiyou County, CA, Coos County, OR, Curry County, OR, Douglas County, OR, Jackson County, OR, Josephine County, OR, Klamath County, OR, Lake County, OR

The radar

The Medford radar (KMAX), 47 km from the middle of the area, began a volume at 22:56 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, 11.0 hours before the alert went out and 489 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 853 m above ground
0-6 km bulk shear: 105 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jan 30, 9:06 AM PST, 5 hours 51 minutes earlier.

Area forecast discussion, Jan 30, 9:06 AM PST, 5 hours 51 minutes before

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Hazardous weather outlook, Jan 30, 3:36 AM PST, 11 hours 21 minutes before

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In the hours before

Local storm report, Jan 30, 9:04 AM PST, 5 hours 53 minutes before

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Local storm report, Jan 30, 9:09 AM PST, 5 hours 48 minutes before

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Local storm report, Jan 30, 9:20 AM PST, 5 hours 37 minutes before

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Local storm report, Jan 30, 9:28 AM PST, 5 hours 29 minutes before

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Local storm report, Jan 30, 10:34 AM PST, 4 hours 23 minutes before

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Local storm report, Jan 30, 10:44 AM PST, 4 hours 13 minutes before

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The office that day

Everything else NWS Medford, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 30, 2:11 PM PST	High Surf Advisory	MFR	Coos, Curry, Douglas	6 hr
Jan 30, 2:20 AM PST	Heavy Snow Warning	MFR	Siskiyou	43 hr

Nearby

Snow Advisories in Oregon, 2008 Snow Advisories in California, 2008 Every 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.