Alert archive / Michigan / Special Weather Statements in 2012

Special Weather Statement, NWS Grand Rapids, MI

May 2, 2012Ottawa County, Michigan

NWS Grand Rapids, MI issued this special weather statement at May 2, 2012, 6:39 AM EDT for Ottawa County, Michigan. It was in force for 36 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: May 2, 2012, 6:39 AM EDT (10:39 UTC)
Expired: May 2, 2012, 7:15 AM EDT
In force: 36 min
Issued by: NWS Grand Rapids, MI

County Ottawa County, MI

The radar

The Grand Rapids radar (KGRR), 42 km from the middle of the area, began a volume at 10:41 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, 10.7 hours before the alert went out and 211 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: 1042 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 May 2, 3:56 AM EDT, 2 hours 43 minutes earlier.

Area forecast discussion, May 2, 3:56 AM EDT, 2 hours 43 minutes before

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Hazardous weather outlook, May 2, 4:51 AM EDT, 1 hour 48 minutes before

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In the hours before

Special weather statement, May 2, 5:43 AM EDT, 56 minutes before

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Special weather statement, May 2, 6:17 AM EDT, 22 minutes before

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Special weather statement, May 2, 6:39 AM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 2, 5:43 AM EDT	Special Weather Statement	GRR	Kent, Muskegon, Newaygo, Oceana, Ottawa	92 min
May 2, 6:17 AM EDT	Special Weather Statement	GRR	Mason, Muskegon, Oceana, Ottawa	58 min
May 2, 7:23 AM EDT	Special Weather Statement	GRR	Kent	52 min
May 2, 7:59 AM EDT	Special Weather Statement	GRR	Gratiot	61 min
May 2, 9:08 AM EDT	Special Weather Statement	GRR	Mason, Muskegon, Oceana	67 min
May 2, 9:17 AM EDT	Special Weather Statement	GRR	Mecosta, Newaygo	58 min
May 2, 9:24 AM EDT	Special Weather Statement	GRR	Lake	66 min

Nearby

Special Weather Statements in Michigan, 2012 Every special weather statement 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; radar from the NEXRAD Level II archive.