Alert archive / Michigan / Mesoscale Discussions in 2003

Mesoscale Discussion 127

February 22, 20036 counties in Indiana; 8 counties in Michigan; 6 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Feb 22, 2003, 10:34 AM EST for 6 counties in Indiana; 8 counties in Michigan; 6 counties in Ohio. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Feb 22, 2003, 10:34 AM EST (15:34 UTC)
Expired: Feb 22, 2003, 3:30 PM EST
In force: 5 hr
Issued by: the Storm Prediction Center

Counties Adams County, IN, Allen County, IN, Blackford County, IN, Grant County, IN, Huntington County, IN, Wells County, IN, Branch County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Saint Clair County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Paulding County, OH, Van Wert County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 124 km from the middle of the area, began a volume at 15:36 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 12:00Z, 3.6 hours before the alert went out and 258 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: 510 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 161 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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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 22, 3:31 PM EST	Mesoscale Discussion	SPC	Adams, Athens, Gallia, Jackson, Lawrence, Meigs and 4 more	119 min
Feb 22, 4:35 PM EST	Severe Thunderstorm Watch	SPC	Gallia, Lawrence, Meigs	4 hr

Nearby

Mesoscale Discussions in Michigan, 2003 Mesoscale Discussions in Indiana, 2003 Mesoscale Discussions in Ohio, 2003 Every mesoscale discussion in 2003

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.