Alert archive / Michigan / Winter Storm Watches in 2016

Winter Storm Watch 4, NWS Northern Indiana

December 7, 2016Cass County, Saint Joseph County, Michigan

NWS Northern Indiana issued this winter storm watch at Dec 7, 2016, 2:55 AM EST for Cass County, Saint Joseph County, Michigan. It took effect at Dec 8, 2016, 3:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Dec 7, 2016, 2:55 AM EST (07:55 UTC)
In effect from
Dec 8, 2016, 3:00 AM EST
Expired
Dec 7, 2016, 11:53 AM EST
In force
Issued by
NWS Northern Indiana

Counties Cass County, MI, Saint Joseph County, MI

The radar

The Northern Indiana radar (KIWX), 62 km from the middle of the area, began a volume at 07:55 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

Detroit, MI (KDTX), launched 00:00Z, 7.9 hours before the alert went out and 212 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-pSkew-T log-p diagram, Detroit, MI at 00:00Z on 2016-12-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 00:00Z on 2016-12-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
456 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
160 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 storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Northern Indiana wrote its last area forecast discussion before this winter storm watch went out at Dec 6, 6:54 PM EST, 8 hours 1 minute earlier.

Area forecast discussion, Dec 6, 6:54 PM EST, 8 hours 1 minute before
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Hazardous weather outlook, Dec 6, 5:32 AM EST, 21 hours 23 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>
      <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.
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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 Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 7, 2:55 AM ESTWinter Weather AdvisoryIWXElkhart, LaGrange, Steuben60 hr
Dec 7, 11:53 AM ESTWinter Storm WarningIWXCass, Saint Joseph47 hr

Nearby

Winter Storm Watches in Michigan, 2016Every winter storm watch in 2016

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.