Alert archive / Michigan / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 378
The Storm Prediction Center issued this severe thunderstorm watch at Jun 30, 2014, 8:23 PM EDT for 31 counties in Michigan. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 30, 2014, 8:23 PM EDT (00:23 UTC)
- Expired
- Jul 1, 2014, 3:07 AM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 31 counties
Allegan County, MI, Arenac County, MI, Barry County, MI, Calhoun County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Gladwin County, MI, Gratiot County, MI, Ingham County, MI, Ionia County, MI, Iosco County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lake County, MI, Manistee County, MI, Mason County, MI, Mecosta County, MI, Missaukee County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Ogemaw County, MI, Osceola County, MI, Ottawa County, MI, Roscommon County, MI, Van Buren County, MI, Wexford County, MI
The radar
The Grand Rapids radar (KGRR), 73 km from the middle of the area, began a volume at 00:26 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
- 20%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 50%
- 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
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 9:06 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Newaygo | 40 min |
| Jun 30, 9:23 PM EDT | Severe Thunderstorm Warning | APX | Manistee, Wexford | 52 min |
| Jun 30, 9:36 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 43 min |
| Jun 30, 10:30 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo | 46 min |
| Jul 1, 12:37 AM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 53 min |
| Jul 1, 12:56 AM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 61 min |
| Jul 1, 1:23 AM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 60 min |
| Jul 1, 1:53 AM EDT | Tornado Warning | GRR | Calhoun | 22 min |
| Jul 1, 1:59 AM EDT | Severe Thunderstorm Warning | GRR | Eaton, Ingham, Jackson | 61 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 00:00Z, 0.4 hours before the alert went out and 181 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
- 1381 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1064 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 70 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 |
|---|---|---|---|---|
| Jun 30, 8:47 PM EDT | Mesoscale Discussion | SPC | Berrien | 88 min |
| Jun 30, 9:44 PM EDT | Mesoscale Discussion | SPC | Berrien | 31 min |
| Jun 30, 10:06 PM EDT | Mesoscale Discussion | SPC | Barry, Calhoun, Cass, Clare, Clinton, Eaton and 10 more | 84 min |
| Jun 30, 11:35 PM EDT | Severe Thunderstorm Watch | SPC | Berrien, Branch, Cass, Saint Joseph | 4 hr |
| Jul 1, 12:31 AM EDT | Mesoscale Discussion | SPC | Branch, Cass, Kalamazoo, Saint Joseph | 89 min |
| Jul 1, 1:24 AM EDT | Mesoscale Discussion | SPC | Branch, Calhoun, Eaton, Hillsdale, Ingham, Jackson and 7 more | 66 min |
| Jul 1, 1:44 AM EDT | Severe Thunderstorm Watch | SPC | Hillsdale, Lenawee, Livingston, Macomb, Monroe, Oakland and 3 more | 4 hr |
| Jul 1, 4:05 AM EDT | Mesoscale Discussion | SPC | Macomb, Saint Clair | 55 min |
Nearby
Severe Thunderstorm Watches in Michigan, 2014Every severe thunderstorm watch in 2014
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.