Alert archive / Oklahoma / Winter Weather Advisories in 2011

Winter Weather Advisory 4, NWS Tulsa, OK

January 31, 2011Choctaw County, Pushmataha County, Oklahoma

NWS Tulsa, OK issued this winter weather advisory at Jan 31, 2011, 3:45 AM CST for Choctaw County, Pushmataha County, Oklahoma. It took effect at Jan 31, 2011, 6:00 PM CST. It was in force for 25 hr.

The area

The counties it named.

The facts

Issued: Jan 31, 2011, 3:45 AM CST (09:45 UTC)
In effect from: Jan 31, 2011, 6:00 PM CST
Expired: Feb 1, 2011, 6:43 PM CST
In force: 25 hr
Issued by: NWS Tulsa, OK

Counties Choctaw County, OK, Pushmataha County, OK

The radar

The Western Arkansas radar (KSRX), 156 km from the middle of the area, began a volume at 09:48 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

Shreveport, LA (KSHV), launched 00:00Z, 9.8 hours before the alert went out and 251 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: 58 J/kg
Mixed-layer CIN: -145 J/kg
Mixed-layer LCL: 1150 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 36 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 Tulsa, OK wrote its last area forecast discussion before this winter weather advisory went out at Jan 30, 5:53 PM CST, 9 hours 52 minutes earlier.

Area forecast discussion, Jan 30, 5:53 PM CST, 9 hours 52 minutes before

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Hazardous weather outlook, Jan 30, 5:04 PM CST, 10 hours 41 minutes before

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  <link rel="stylesheet" href="index.css">
</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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        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 Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 31, 3:15 PM CST	Blizzard Warning	TSA	Craig, Creek, Delaware, Mayes, Nowata, Ottawa and 4 more	27 hr

Nearby

Winter Weather Advisories in Oklahoma, 2011 Every winter weather advisory in 2011

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.