Alert archive / Michigan / Mesoscale Discussions in 2005

Mesoscale Discussion 1877

July 26, 20059 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2005, 2:31 AM EDT for 9 counties in Michigan. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Jul 26, 2005, 2:31 AM EDT (06:31 UTC)
Expired: Jul 26, 2005, 4:00 AM EDT
In force: 89 min
Issued by: the Storm Prediction Center

Counties Arenac County, MI, Bay County, MI, Genesee County, MI, Lapeer County, MI, Livingston County, MI, Oakland County, MI, Saginaw County, MI, Shiawassee County, MI, Tuscola County, MI

The radar

The Detroit radar (KDTX), 51 km from the middle of the area, began a volume at 06:31 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, 6.5 hours before the alert went out and 50 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: 2500 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 132 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
Jul 25, 9:10 PM EDT	Mesoscale Discussion	SPC	Berrien, Cass	65 min
Jul 26, 12:25 AM EDT	Severe Thunderstorm Watch	SPC	Allegan, Barry, Branch, Calhoun, Cass, Clinton and 17 more	5 hr
Jul 26, 4:33 AM EDT	Mesoscale Discussion	SPC	Arenac, Bay, Genesee, Lapeer, Macomb, Oakland and 2 more	87 min
Jul 26, 11:31 AM EDT	Mesoscale Discussion	SPC	Berrien, Branch, Calhoun, Cass, Hillsdale, Ingham and 11 more	89 min
Jul 26, 12:00 PM EDT	Severe Thunderstorm Watch	SPC	Branch, Calhoun, Hillsdale, Jackson, Lenawee, Livingston and 7 more	7 hr
Jul 26, 6:40 PM EDT	Severe Thunderstorm Watch	SPC	Monroe	6 hr

Nearby

Mesoscale Discussions in Michigan, 2005 Every mesoscale discussion in 2005

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.