Alert archive / Massachusetts / Winter Weather Advisories in 2012

Winter Weather Advisory 1, NWS Boston/Norton, MA

January 11, 20126 counties in Massachusetts; Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this winter weather advisory at Jan 11, 2012, 4:48 AM EST for 6 counties in Massachusetts; Capitol Planning Region, Connecticut. It took effect at Jan 12, 2012, 1:00 AM EST. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Jan 11, 2012, 4:48 AM EST (09:48 UTC)
In effect from: Jan 12, 2012, 1:00 AM EST
Expired: Jan 12, 2012, 3:13 PM EST
In force: 14 hr
Issued by: NWS Boston/Norton, MA

Counties Capitol Planning Region, CT, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 9.8 hours before the alert went out and 148 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: 1315 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 86 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 Boston/Norton, MA wrote its last area forecast discussion before this winter weather advisory went out at Jan 11, 4:26 AM EST, 22 minutes earlier.

Area forecast discussion, Jan 11, 4:26 AM EST, 22 minutes before

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Hazardous weather outlook, Jan 10, 4:48 PM EST, 12 hours 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>
      <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>
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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 Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 11, 4:19 AM EST	Gale Warning	BOX		35 hr
Jan 11, 4:29 AM EST	Wind Advisory	BOX	Barnstable, Bristol, Dukes, Essex, Nantucket, Norfolk and 2 more	35 hr
Jan 11, 4:23 PM EST	Coastal Flood Advisory	BOX	Barnstable, Essex, Norfolk, Plymouth, Suffolk	23 hr

Nearby

Winter Weather Advisories in Massachusetts, 2012 Winter Weather Advisories in Connecticut, 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.