Alert archive / Michigan / Tornado Watches in 2006

Tornado Watch 394

May 25, 200634 counties in Michigan

The Storm Prediction Center issued this tornado watch at May 25, 2006, 3:14 PM EDT for 34 counties in Michigan. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 25, 2006, 3:14 PM EDT (19:14 UTC)
Expired
May 25, 2006, 9:27 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 34 counties

Allegan County, MI, Barry County, MI, Bay County, MI, Calhoun County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gratiot County, MI, Huron County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Mecosta County, MI, Midland County, MI, Monroe County, MI, Montcalm County, MI, Newaygo County, MI, Oakland County, MI, Ottawa County, MI, Saginaw County, MI, Saint Clair County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI

The radar

The Grand Rapids radar (KGRR), 62 km from the middle of the area, began a volume at 19:14 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
30%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
60%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 25, 3:35 PM EDTSevere Thunderstorm WarningGRRIngham, Jackson40 min
May 25, 3:40 PM EDTSevere Thunderstorm WarningDTXSanilac24 min
May 25, 4:01 PM EDTSevere Thunderstorm WarningDTXMidland29 min
May 25, 4:35 PM EDTSevere Thunderstorm WarningDTXHuron40 min
May 25, 5:01 PM EDTSevere Thunderstorm WarningDTXMonroe59 min
May 25, 5:51 PM EDTSevere Thunderstorm WarningDTXWayne46 min
May 25, 5:51 PM EDTSevere Thunderstorm WarningGRRJackson39 min
May 25, 6:01 PM EDTSevere Thunderstorm WarningDTXWashtenaw74 min
May 25, 6:07 PM EDTSevere Thunderstorm WarningDTXGenesee38 min
May 25, 6:11 PM EDTSevere Thunderstorm WarningDTXLivingston64 min
May 25, 6:12 PM EDTSevere Thunderstorm WarningGRRIngham48 min
May 25, 6:14 PM EDTSevere Thunderstorm WarningDTXLenawee54 min
May 25, 6:16 PM EDTSevere Thunderstorm WarningDTXShiawassee47 min
May 25, 6:26 PM EDTSevere Thunderstorm WarningDTXLapeer94 min
May 25, 6:32 PM EDTSevere Thunderstorm WarningDTXOakland73 min
May 25, 6:36 PM EDTSevere Thunderstorm WarningDTXMonroe69 min
May 25, 6:46 PM EDTSevere Thunderstorm WarningDTXGenesee68 min
May 25, 6:49 PM EDTSevere Thunderstorm WarningDTXHuron41 min
May 25, 6:57 PM EDTSevere Thunderstorm WarningDTXWayne60 min
May 25, 7:05 PM EDTSevere Thunderstorm WarningDTXMacomb25 min
May 25, 8:01 PM EDTSevere Thunderstorm WarningDTXLapeer19 min
May 25, 8:10 PM EDTSevere Thunderstorm WarningDTXSanilac58 min
May 25, 8:41 PM EDTTornado WarningGRRGratiot34 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, 7.2 hours before the alert went out and 118 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 2006-05-25Temperature 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, Detroit, MI at 12:00Z on 2006-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.1939Sfc1 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
1108 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 25, 1:00 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Hillsdale, Jackson, Lenawee, Monroe and 2 more2 hr
May 25, 2:34 PM EDTTornado WatchSPCBerrien, Branch, Cass, Hillsdale, Saint Joseph7 hr

Nearby

Tornado Watches in Michigan, 2006Every tornado watch in 2006

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.