Alert archive / Michigan / Severe Thunderstorm Watches in 2008
Severe Thunderstorm Watch 652
The Storm Prediction Center issued this severe thunderstorm watch at Jul 2, 2008, 1:18 PM EDT for 32 counties in Michigan. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 2008, 1:18 PM EDT (17:18 UTC)
- Expired
- Jul 2, 2008, 7:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 70 kt
All 32 counties
Alcona County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Bay County, MI, Benzie County, MI, Charlevoix County, MI, Cheboygan County, MI, Crawford County, MI, Emmet County, MI, Genesee County, MI, Gladwin County, MI, Grand Traverse County, MI, Huron County, MI, Iosco County, MI, Kalkaska County, MI, Lapeer County, MI, Leelanau County, MI, Manistee 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, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Wexford County, MI
The radar
The NCL Michigan radar (KAPX), 53 km from the middle of the area, began a volume at 17:21 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 40%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 3:40 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 62 min |
| Jul 2, 4:24 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Grand Traverse, Leelanau | 38 min |
| Jul 2, 5:33 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 29 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 5.3 hours before the alert went out and 214 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1681 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 12:04 AM EDT | Mesoscale Discussion | SPC | Gogebic, Houghton, Keweenaw, Ontonagon | 86 min |
| Jul 2, 10:42 AM EDT | Mesoscale Discussion | SPC | Allegan, Benzie, Berrien, Grand Traverse, Kent, Lake and 11 more | 2 hr |
| Jul 2, 11:09 AM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 22 more | 5 hr |
| Jul 2, 2:55 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Cass, Eaton, Ionia and 13 more | 95 min |
| Jul 2, 4:08 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 30 more | 7 hr |
| Jul 2, 4:50 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Clare and 16 more | 85 min |
| Jul 2, 6:42 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Cheboygan and 20 more | 63 min |
Nearby
Severe Thunderstorm Watches in Michigan, 2008Every severe thunderstorm watch in 2008
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.