Alert archive / Michigan / Special Weather Statements in 2012

Special Weather Statement, NWS Grand Rapids, MI

March 15, 2012Calhoun County, Jackson County, Michigan

NWS Grand Rapids, MI issued this special weather statement at Mar 15, 2012, 1:28 AM EDT for Calhoun County, Jackson County, Michigan. It was in force for 62 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 15, 2012, 1:28 AM EDT (05:28 UTC)
Expired: Mar 15, 2012, 2:30 AM EDT
In force: 62 min
Issued by: NWS Grand Rapids, MI

Counties Calhoun County, MI, Jackson County, MI

The radar

The Detroit radar (KDTX), 92 km from the middle of the area, began a volume at 05:30 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 5.5 hours before the alert went out and 314 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: 13 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 2195 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 106 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 14, 8:33 PM EDT, 4 hours 55 minutes earlier.

Area forecast discussion, Mar 14, 8:33 PM EDT, 4 hours 55 minutes before

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Hazardous weather outlook, Mar 14, 3:50 PM EDT, 9 hours 38 minutes before

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In the hours before

Special weather statement, Mar 15, 1:24 AM EDT, 4 minutes before

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Special weather statement, Mar 15, 1:28 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 15, 1:24 AM EDT	Special Weather Statement	GRR	Barry	66 min
Mar 15, 1:46 AM EDT	Special Weather Statement	GRR	Barry	59 min
Mar 15, 5:42 AM EDT	Special Weather Statement	GRR	Kalamazoo	63 min
Mar 15, 7:01 AM EDT	Special Weather Statement	GRR	Calhoun, Kalamazoo	59 min
Mar 15, 3:25 PM EDT	Special Weather Statement	GRR	Calhoun, Ingham, Jackson	65 min
Mar 15, 3:45 PM EDT	Special Weather Statement	GRR	Ingham	60 min
Mar 15, 4:08 PM EDT	Severe Thunderstorm Warning	GRR	Jackson	33 min
Mar 15, 4:23 PM EDT	Special Weather Statement	GRR	Ingham	22 min
Mar 15, 5:02 PM EDT	Marine Dense Fog Advisory	GRR		18 hr
Mar 15, 5:03 PM EDT	Special Weather Statement	GRR	Calhoun	57 min
Mar 15, 5:05 PM EDT	Special Weather Statement	GRR	Clare	55 min
Mar 15, 5:16 PM EDT	Special Weather Statement	GRR	Jackson	59 min
Mar 15, 5:58 PM EDT	Special Weather Statement	GRR	Calhoun, Ingham, Jackson	62 min
Mar 15, 6:33 PM EDT	Special Weather Statement	GRR	Clare	57 min
Mar 15, 7:23 PM EDT	Special Weather Statement	GRR	Isabella	52 min
Mar 15, 7:29 PM EDT	Severe Thunderstorm Warning	GRR	Clare, Isabella	46 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.