Alert archive / Michigan / Frost Advisories in 2018

Frost Advisory 2, NWS Marquette, MI

September 28, 20186 counties in Michigan

NWS Marquette, MI issued this frost advisory at Sep 28, 2018, 3:04 AM EDT for 6 counties in Michigan. It took effect at Sep 28, 2018, 11:00 PM EDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Sep 28, 2018, 3:04 AM EDT (07:04 UTC)
In effect from: Sep 28, 2018, 11:00 PM EDT
Expired: Sep 29, 2018, 10:00 AM EDT
In force: 11 hr
Issued by: NWS Marquette, MI

Counties Alger County, MI, Delta County, MI, Dickinson County, MI, Marquette County, MI, Menominee County, MI, Schoolcraft County, MI

The radar

The Marquette radar (KMQT), 61 km from the middle of the area, began a volume at 07:08 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 7.1 hours before the alert went out and 195 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: 4 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1016 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 165 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 frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Marquette, MI wrote its last area forecast discussion before this frost advisory went out at Sep 27, 4:20 PM EDT, 10 hours 44 minutes earlier.

Area forecast discussion, Sep 27, 4:20 PM EDT, 10 hours 44 minutes before

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Hazardous weather outlook, Sep 27, 3:52 PM EDT, 11 hours 12 minutes before

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</head>
<body>
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    <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.
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        Please try again in a few minutes.
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The office that day

Everything else NWS Marquette, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 28, 3:04 AM EDT	Freeze Warning	MQT	Baraga, Dickinson, Gogebic, Houghton, Iron, Menominee and 1 more	31 hr
Sep 28, 3:58 AM EDT	Small Craft Advisory	MQT		39 hr
Sep 28, 5:10 PM EDT	Special Weather Statement	MQT	Alger, Delta, Dickinson, Marquette, Menominee, Schoolcraft	65 min

Nearby

Frost Advisories in Michigan, 2018 Every frost advisory in 2018

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.