Alert archive / Missouri / Winter Weather Advisories in 2014

Winter Weather Advisory 7, NWS St. Louis, MO

March 2, 201421 counties in Missouri; 15 counties in Illinois

NWS St. Louis, MO issued this winter weather advisory at Mar 2, 2014, 6:32 AM CST for 21 counties in Missouri; 15 counties in Illinois. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: Mar 2, 2014, 6:32 AM CST (12:32 UTC)
Expired: Mar 3, 2014, 3:45 AM CST
In force: 21 hr
Issued by: NWS St. Louis, MO

All 36 counties

Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Montgomery County, IL, Pike County, IL, Saint Clair County, IL, Washington County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Franklin County, MO, Gasconade County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Shelby County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 46 km from the middle of the area, began a volume at 12:31 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

Lincoln, IL (KILX), launched 12:00Z, 0.5 hours before the alert went out and 230 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: 665 m above ground
0-6 km bulk shear: 89 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 214 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 St. Louis, MO wrote its last area forecast discussion before this winter weather advisory went out at Mar 2, 4:02 AM CST, 2 hours 30 minutes earlier.

Area forecast discussion, Mar 2, 4:02 AM CST, 2 hours 30 minutes before

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Hazardous weather outlook, Mar 2, 4:59 AM CST, 1 hour 33 minutes before

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In the hours before

Local storm report, Mar 2, 5:39 AM CST, 53 minutes before

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Local storm report, Mar 2, 5:41 AM CST, 51 minutes before

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Local storm report, Mar 2, 5:43 AM CST, 49 minutes before

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      <p id="message2">
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Local storm report, Mar 2, 5:46 AM CST, 46 minutes before

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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, Mar 2, 5:51 AM CST, 41 minutes before

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      <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, Mar 2, 5:53 AM CST, 39 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>
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The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 2, 3:46 AM CST	Wind Chill Advisory	LSX	Audrain, Boone, Callaway, Cole, Knox, Lewis and 9 more	30 hr

Nearby

Winter Weather Advisories in Missouri, 2014 Winter Weather Advisories in Illinois, 2014 Every winter weather advisory in 2014

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.