Alert archive / Indiana / Special Weather Statements in 2012

Special Weather Statement, NWS Northern Indiana

April 15, 2012Saint Joseph County, Indiana

NWS Northern Indiana issued this special weather statement at Apr 15, 2012, 9:48 AM EDT for Saint Joseph County, Indiana. It was in force for 27 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: Apr 15, 2012, 9:48 AM EDT (13:48 UTC)
Expired: Apr 15, 2012, 10:15 AM EDT
In force: 27 min
Issued by: NWS Northern Indiana

County Saint Joseph County, IN

The radar

The Northern Indiana radar (KIWX), 37 km from the middle of the area, began a volume at 13:48 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

Lincoln, IL (KILX), launched 12:00Z, 1.8 hours before the alert went out and 261 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: 17 J/kg
Mixed-layer CIN: -265 J/kg
Mixed-layer LCL: 1124 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 404 m²/s²
0-3 km storm-relative helicity: 425 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 Northern Indiana wrote its last area forecast discussion before this special weather statement went out at Apr 15, 8:07 AM EDT, 1 hour 41 minutes earlier.

Area forecast discussion, Apr 15, 8:07 AM EDT, 1 hour 41 minutes before

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Hazardous weather outlook, Apr 15, 8:08 AM EDT, 1 hour 40 minutes before

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In the hours before

Special weather statement, Apr 15, 8:54 AM EDT, 54 minutes before

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Special weather statement, Apr 15, 9:18 AM EDT, 30 minutes before

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Special weather statement, Apr 15, 9:48 AM EDT, 0 minutes before

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The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 15, 7:28 AM EDT	Gale Warning	IWX		36 hr
Apr 15, 8:54 AM EDT	Special Weather Statement	IWX	Elkhart, Saint Joseph	21 min
Apr 15, 9:18 AM EDT	Special Weather Statement	IWX	Starke	27 min
Apr 15, 10:26 AM EDT	Special Weather Statement	IWX	LaGrange	34 min
Apr 15, 12:30 PM EDT	Wind Advisory	IWX	Adams, Allen, Blackford, Cass, DeKalb, Elkhart and 14 more	7 hr
Apr 15, 10:58 AM EDT	Special Weather Statement	IWX	Hillsdale	32 min

Nearby

Special Weather Statements in Indiana, 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.