Alert archive / Michigan / Special Weather Statements in 2016

Special Weather Statement, NWS Grand Rapids, MI

October 12, 2016Gratiot County, Michigan

NWS Grand Rapids, MI issued this special weather statement at Oct 12, 2016, 4:22 PM EDT for Gratiot County, Michigan. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 12, 2016, 4:22 PM EDT (20:22 UTC)
Expired
Oct 12, 2016, 5:00 PM EDT
In force
38 min
Issued by
NWS Grand Rapids, MI

County Gratiot County, MI

The radar

The Grand Rapids radar (KGRR), 86 km from the middle of the area, began a volume at 20:21 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 12:00Z, 8.4 hours before the alert went out and 117 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 12:00Z on 2016-10-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2016-10-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1550 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Rapids, MI wrote its last area forecast discussion before this special weather statement went out at Oct 12, 3:25 PM EDT, 57 minutes earlier.

Area forecast discussion, Oct 12, 3:25 PM EDT, 57 minutes before
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Hazardous weather outlook, Oct 12, 3:44 AM EDT, 12 hours 38 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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In the hours before

Special weather statement, Oct 12, 4:22 PM EDT, 0 minutes before
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        Please try again in a few minutes.
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 12, 5:04 PM EDTSpecial Weather StatementGRRClinton, Gratiot56 min
Oct 12, 6:00 PM EDTSpecial Weather StatementGRRBarry, Calhoun, Eaton, Kalamazoo60 min
Oct 12, 6:23 PM EDTSpecial Weather StatementGRRJackson37 min
Oct 12, 7:11 PM EDTSpecial Weather StatementGRRCalhoun, Kalamazoo49 min

Nearby

Special Weather Statements in Michigan, 2016Every special weather statement 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.