Alert archive / Michigan / Mesoscale Discussions in 2005

Mesoscale Discussion 2573

December 15, 200511 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Dec 15, 2005, 2:23 PM EST for 11 counties in Michigan. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Dec 15, 2005, 2:23 PM EST (19:23 UTC)
Expired
Dec 15, 2005, 6:00 PM EST
In force
4 hr
Issued by
the Storm Prediction Center

Counties Alcona County, MI, Alpena County, MI, Arenac County, MI, Bay County, MI, Gladwin County, MI, Iosco County, MI, Montmorency County, MI, Ogemaw County, MI, Oscoda County, MI, Presque Isle County, MI, Tuscola County, MI

The radar

The NCL Michigan radar (KAPX), 92 km from the middle of the area, began a volume at 19:20 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

Alpena, MI (KAPX), launched 12:00Z, 7.4 hours before the alert went out and 124 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-pSkew-T log-p diagram, Alpena, MI at 12:00Z on 2005-12-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Alpena, MI at 12:00Z on 2005-12-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
494 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
170 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.

IssuedProductOfficeCountiesLasted
Dec 14, 8:11 PM ESTMesoscale DiscussionSPCDelta, Dickinson, Menominee, Schoolcraft4 hr
Dec 15, 11:00 AM ESTMesoscale DiscussionSPCArenac, Bay, Branch, Calhoun, Clinton, Eaton and 19 more4 hr

Nearby

Mesoscale Discussions in Michigan, 2005Every 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.