Alert archive / Michigan / Mesoscale Discussions in 2007

Mesoscale Discussion 1399

July 5, 20075 counties in Indiana; 61 counties in Michigan; 6 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2007, 6:37 PM EDT for 5 counties in Indiana; 61 counties in Michigan; 6 counties in Ohio. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued
Jul 5, 2007, 6:37 PM EDT (22:37 UTC)
Expired
Jul 5, 2007, 7:30 PM EDT
In force
53 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 488
All 72 counties

DeKalb County, IN, Elkhart County, IN, LaGrange County, IN, Noble County, IN, Steuben County, IN, Alcona County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Barry County, MI, Bay County, MI, Benzie County, MI, Branch County, MI, Calhoun County, MI, Cheboygan County, MI, Clare County, MI, Clinton County, MI, Crawford County, MI, Eaton County, MI, Genesee County, MI, Gladwin County, MI, Grand Traverse County, MI, Gratiot County, MI, Hillsdale County, MI, Huron County, MI, Ingham County, MI, Ionia County, MI, Iosco County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kalkaska County, MI, Kent County, MI, Lake County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Manistee County, MI, Mason County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Monroe County, MI, Montcalm County, MI, Montmorency County, MI, Muskegon County, MI, Newaygo County, MI, Oakland County, MI, Oceana County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Otsego County, MI, Ottawa County, MI, Presque Isle County, MI, Roscommon County, MI, Saginaw County, MI, Saint Clair County, MI, Saint Joseph County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Wayne County, MI, Wexford County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Paulding County, OH, Williams County, OH

The radar

The NCL Michigan radar (KAPX), 126 km from the middle of the area, began a volume at 22:37 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 12:00Z, 10.6 hours before the alert went out and 146 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, Detroit, MI at 12:00Z on 2007-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 118 joules per kilogram.LCLLFCEL10008507005003002001001 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, Detroit, MI at 12:00Z on 2007-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.1939587897Sfc1 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
118 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
1149 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.1

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
Jul 4, 8:10 PM EDTMesoscale DiscussionSPCDearborn, Franklin, Ohio, Ripley, Switzerland65 min
Jul 5, 1:59 PM EDTMesoscale DiscussionSPCAdams, Allen, Blackford, Decatur, DeKalb, Delaware and 20 more2 hr
Jul 5, 2:09 PM EDTSevere Thunderstorm WatchSPCDeKalb, LaGrange, Noble, Steuben7 hr
Jul 5, 1:28 PM EDTMesoscale DiscussionSPCAntrim, Barry, Branch, Calhoun, Charlevoix, Cheboygan and 40 more2 hr
Jul 5, 11:40 AM EDTMesoscale DiscussionSPCBelmont, Guernsey, Harrison, Jefferson, Tuscarawas2 hr

Nearby

Mesoscale Discussions in Michigan, 2007Mesoscale Discussions in Ohio, 2007Mesoscale Discussions in Indiana, 2007Every mesoscale discussion in 2007

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.