Alert archive / Michigan / Mesoscale Discussions in 2020
Mesoscale Discussion 897
The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2020, 12:17 PM EDT for 21 counties in Michigan. It was in force for 58 min.
The area
The outline as issued.
The facts
- Issued
- Jun 10, 2020, 12:17 PM EDT (16:17 UTC)
- Expired
- Jun 10, 2020, 1:15 PM EDT
- In force
- 58 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...severe thunderstorm watch likely
- Chance of a watch
- 95%
All 21 counties
Alcona County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Bay County, MI, Cheboygan County, MI, Crawford County, MI, Gladwin County, MI, Grand Traverse County, MI, Iosco County, MI, Kalkaska County, MI, Midland County, MI, Missaukee County, MI, Montmorency County, MI, Ogemaw County, MI, Oscoda County, MI, Otsego County, MI, Presque Isle County, MI, Roscommon County, MI, Saginaw County, MI, Wexford County, MI
The radar
The NCL Michigan radar (KAPX), 65 km from the middle of the area, began a volume at 16:20 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 4.3 hours before the alert went out and 162 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 664 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 246 m²/s²
- 0-3 km storm-relative helicity
- 336 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 9:44 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 14 more | 91 min |
| Jun 10, 10:59 AM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Calhoun, Clare, Clinton, Eaton and 14 more | 6 hr |
| Jun 10, 11:22 AM EDT | Mesoscale Discussion | SPC | Branch, Hillsdale, Lenawee | 83 min |
| Jun 10, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | Berrien, Branch, Cass, Hillsdale, Saint Joseph | 6 hr |
| Jun 10, 12:41 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Arenac, Bay, Genesee, Gladwin and 19 more | 7 hr |
| Jun 10, 3:03 PM EDT | Mesoscale Discussion | SPC | Branch, Calhoun, Eaton, Genesee, Hillsdale, Ingham and 13 more | 87 min |
Nearby
Mesoscale Discussions in Michigan, 2020Every mesoscale discussion in 2020
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.