Alert archive / Michigan / Special Weather Statements in 2011

Special Weather Statement, NWS Grand Rapids, MI

March 23, 20115 counties in Michigan

NWS Grand Rapids, MI issued this special weather statement at Mar 23, 2011, 12:29 AM EDT for 5 counties in Michigan. It was in force for 76 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: Mar 23, 2011, 12:29 AM EDT (04:29 UTC)
Expired: Mar 23, 2011, 1:45 AM EDT
In force: 76 min
Issued by: NWS Grand Rapids, MI

Counties Clinton County, MI, Gratiot County, MI, Ionia County, MI, Kent County, MI, Montcalm County, MI

The radar

The Grand Rapids radar (KGRR), 74 km from the middle of the area, began a volume at 04:30 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, 4.5 hours before the alert went out and 318 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: 482 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 212 m²/s²
0-3 km storm-relative helicity: 527 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 Mar 22, 11:53 PM EDT, 36 minutes earlier.

Area forecast discussion, Mar 22, 11:53 PM EDT, 36 minutes before

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Hazardous weather outlook, Mar 22, 11:55 PM EDT, 34 minutes before

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In the hours before

Local storm report, Mar 22, 10:05 PM EDT, 2 hours 24 minutes before

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Local storm report, Mar 22, 10:41 PM EDT, 1 hour 48 minutes before

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Local storm report, Mar 22, 10:43 PM EDT, 1 hour 46 minutes before

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Local storm report, Mar 23, 12:16 AM EDT, 13 minutes before

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Local storm report, Mar 23, 12:29 AM EDT, 0 minutes before

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Special weather statement, Mar 23, 12:29 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
Mar 22, 10:24 PM EDT	River Flood Advisory	GRR	Eaton	37 hr
Mar 22, 10:24 PM EDT	River Flood Advisory	GRR	Kent	5 days
Mar 23, 4:10 AM EDT	Special Weather Statement	GRR	Allegan, Barry, Calhoun, Clinton, Eaton, Gratiot and 8 more	2 hr
Mar 23, 11:39 AM EDT	River Flood Advisory	GRR	Kent	5 days
Mar 23, 11:39 AM EDT	River Flood Advisory	GRR	Allegan	22 hr

Nearby

Special Weather Statements in Michigan, 2011 Every special weather statement in 2011

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.