Alert archive / Michigan / Special Weather Statements in 2017

Special Weather Statement, NWS Grand Rapids, MI

March 7, 201711 counties in Michigan

NWS Grand Rapids, MI issued this special weather statement at Mar 7, 2017, 1:22 AM EST for 11 counties in Michigan. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 7, 2017, 1:22 AM EST (06:22 UTC)
Expired: Mar 7, 2017, 4:15 AM EST
In force: 3 hr
Issued by: NWS Grand Rapids, MI

Counties Allegan County, MI, Barry County, MI, Kalamazoo County, MI, Kent County, MI, Lake County, MI, Mason County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Ottawa County, MI, Van Buren County, MI

The radar

The Grand Rapids radar (KGRR), 30 km from the middle of the area, began a volume at 06:21 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 00:00Z, 6.4 hours before the alert went out and 204 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: 1 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 476 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 225 m²/s²
0-3 km storm-relative helicity: 248 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 Mar 6, 11:50 PM EST, 1 hour 32 minutes earlier.

Area forecast discussion, Mar 6, 11:50 PM EST, 1 hour 32 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.
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      <p id="message2">
        Please try again in a few minutes.
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Hazardous weather outlook, Mar 6, 3:43 AM EST, 21 hours 39 minutes before

HAZARDOUS WEATHER OUTLOOK
National Weather Service Grand Rapids MI
343 AM EST Mon Mar 6 2017

MIZ037>040-043>046-050>052-056>059-064>067-071>074-070845-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
343 AM EST Mon Mar 6 2017

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...Today and Tonight

Locally heavy rain and a few thunderstorms are possible tonight.
Cloud to ground lightning strikes and ponding of the water on the
roadways are the main hazards. Any stronger storm could cause the
winds to gust over 40 mph.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Very windy conditions look likely for Wednesday. Power outages
are possible.

Over the weekend there may be some slick roads as a result of
possible light snow.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

LMZ844>849-070845-
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-Pentwater to Manistee MI-
343 AM EST Mon Mar 6 2017

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...Today and Tonight

The wind is forecasted to increase to gale force this afternoon
and persist into tonight.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Hazardous boating conditions will continue into the end of the
week.  Gales look likely for Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

In the hours before

Special weather statement, Mar 7, 1:22 AM EST, 0 minutes before

Special Weather Statement
National Weather Service Grand Rapids MI
122 AM EST TUE MAR 7 2017

MIZ037-038-043-044-050-056-057-064-065-071-072-070915-
Oceana-Kalamazoo-Muskegon-Lake-Allegan-Van
Buren-Ottawa-Barry-Newaygo-Mason-Kent-
122 AM EST TUE MAR 7 2017

...SHOWERS AND THUNDERSTORMS WILL BRING STRONG GUSTY WINDS ...

Winds will gust over 40 mph at times tonight. Wind gusts of 50 to 55
mph are possible between 3 and 4 AM as a line of showers and
thunderstorms moves through.

LAT...LON 4207 8622 4224 8622 4224 8636 4245 8626
      4272 8621 4309 8625 4362 8654 4382 8643
      4406 8651 4416 8640 4416 8558 4329 8556
      4329 8546 4277 8539 4277 8507 4242 8507
      4242 8534 4207 8529
TIME...MOT...LOC 0616Z 113DEG 38KT 4377 8567

OSTUNO

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 7, 3:30 AM EST	High Wind Watch	GRR	Allegan, Barry, Calhoun, Clare, Clinton, Eaton and 17 more	11 hr
Mar 7, 3:30 AM EST	Wind Advisory	GRR	Allegan, Mason, Muskegon, Oceana, Ottawa, Van Buren	11 hr
Mar 7, 3:38 AM EST	Special Weather Statement	GRR	Calhoun, Clare, Clinton, Eaton, Gratiot, Ingham and 6 more	3 hr
Mar 7, 4:01 AM EST	Special Weather Statement	GRR	Allegan, Barry, Kalamazoo, Kent, Lake, Mason and 5 more	3 hr
Mar 7, 2:51 PM EST	High Wind Warning	GRR	Allegan, Barry, Calhoun, Clinton, Eaton, Gratiot and 13 more	28 hr
Mar 7, 2:51 PM EST	Wind Advisory	GRR	Clare, Lake, Mason, Osceola	28 hr

Nearby

Special Weather Statements in Michigan, 2017 Every special weather statement in 2017

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.