Alert archive / Oregon / Winter Weather Advisories in 2012

Winter Weather Advisory 3, NWS Medford, OR

January 17, 20126 counties in Oregon; Modoc County, Siskiyou County, California

NWS Medford, OR issued this winter weather advisory at Jan 17, 2012, 4:15 AM PST for 6 counties in Oregon; Modoc County, Siskiyou County, California. It took effect at Jan 17, 2012, 10:00 PM PST. It was in force for 48 hr.

The area

The counties it named.

The facts

Issued: Jan 17, 2012, 4:15 AM PST (12:15 UTC)
In effect from: Jan 17, 2012, 10:00 PM PST
Expired: Jan 19, 2012, 10:00 PM PST
In force: 48 hr
Issued by: NWS Medford, OR

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

The radar

The Medford radar (KMAX), 54 km from the middle of the area, began a volume at 12:16 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

Medford/Jackson, OR (KMFR), launched 12:00Z, 0.3 hours before the alert went out and 39 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: 1264 m above ground
0-6 km bulk shear: 81 kt
0-1 km storm-relative helicity: 225 m²/s²
0-3 km storm-relative helicity: 330 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 winter weather 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 winter weather advisory went out at Jan 16, 8:01 PM PST, 8 hours 14 minutes earlier.

Area forecast discussion, Jan 16, 8:01 PM PST, 8 hours 14 minutes before

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Hazardous weather outlook, Jan 16, 3:29 PM PST, 12 hours 46 minutes before

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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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 17, 4:15 AM PST	Winter Storm Warning	MFR	Curry, Douglas, Jackson, Josephine, Klamath, Lake	66 hr
Jan 17, 11:33 AM PST	River Flood Watch	MFR	Coos, Curry, Douglas	25 hr
Jan 17, 12:03 PM PST	Flood Watch	MFR	Coos, Curry, Douglas, Josephine	46 hr
Jan 17, 3:02 PM PST	High Wind Watch	MFR	Coos, Curry, Douglas, Lake	23 hr
Jan 17, 3:02 PM PST	Wind Advisory	MFR	Curry, Jackson, Josephine	47 hr
Jan 17, 3:05 PM PST	Hurricane Force Wind Warning	MFR		23 hr

Nearby

Winter Weather Advisories in Oregon, 2012 Winter Weather Advisories in California, 2012 Every winter weather advisory in 2012

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.