Alert archive / Arkansas / Wind Chill Advisories in 2011

Wind Chill Advisory 3, NWS Little Rock, AR

February 9, 20116 counties in Arkansas

NWS Little Rock, AR issued this wind chill advisory at Feb 9, 2011, 4:06 PM CST for 6 counties in Arkansas. It took effect at Feb 9, 2011, 9:00 PM CST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Feb 9, 2011, 4:06 PM CST (22:06 UTC)
In effect from: Feb 9, 2011, 9:00 PM CST
Expired: Feb 10, 2011, 9:00 AM CST
In force: 12 hr
Issued by: NWS Little Rock, AR

Counties Baxter County, AR, Fulton County, AR, Izard County, AR, Marion County, AR, Sharp County, AR, Stone County, AR

The radar

The Little Rock radar (KLZK), 150 km from the middle of the area, began a volume at 22:07 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

Springfield, MO (KSGF), launched 12:00Z, 10.1 hours before the alert went out and 175 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: 491 m above ground
0-6 km bulk shear: 83 kt
0-1 km storm-relative helicity: 226 m²/s²
0-3 km storm-relative helicity: 273 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 wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this wind chill advisory went out at Feb 9, 11:33 AM CST, 4 hours 33 minutes earlier.

Area forecast discussion, Feb 9, 11:33 AM CST, 4 hours 33 minutes before

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Hazardous weather outlook, Feb 9, 12:55 PM CST, 3 hours 11 minutes before

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In the hours before

Local storm report, Feb 9, 3:28 PM CST, 38 minutes before

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Local storm report, Feb 9, 3:33 PM CST, 33 minutes before

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Local storm report, Feb 9, 3:38 PM CST, 28 minutes before

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      <p id="message2">
        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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Local storm report, Feb 9, 3:55 PM CST, 11 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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      <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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Local storm report, Feb 9, 3:56 PM CST, 10 minutes before

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<body>
  <main class="wrap">
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      <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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Local storm report, Feb 9, 3:57 PM CST, 9 minutes before

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<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.
      </p>
    </section>
  </main>
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</body>
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The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 9, 4:06 PM CST	Winter Weather Advisory	LZK	Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 28 more	2 hr

Nearby

Wind Chill Advisories in Arkansas, 2011 Every wind chill 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.