Alert archive / Ohio / Tornado Watches in 2006

Tornado Watch 532

June 21, 20068 counties in Michigan; 17 counties in Ohio

The Storm Prediction Center issued this tornado watch at Jun 21, 2006, 5:43 PM EDT for 8 counties in Michigan; 17 counties in Ohio. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 21, 2006, 5:43 PM EDT (21:43 UTC)
Expired
Jun 22, 2006, 12:00 AM EDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 25 counties

Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Clair County, MI, Washtenaw County, MI, Wayne County, MI, Ashland County, OH, Crawford County, OH, Erie County, OH, Hancock County, OH, Hardin County, OH, Huron County, OH, Knox County, OH, Logan County, OH, Lucas County, OH, Marion County, OH, Morrow County, OH, Ottawa County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Wood County, OH, Wyandot County, OH

The radar

The Detroit radar (KDTX), 97 km from the middle of the area, began a volume at 21:45 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
40%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 21, 6:27 PM EDTTornado WarningDTXMonroe63 min
Jun 21, 6:42 PM EDTSevere Thunderstorm WarningCLELucas48 min
Jun 21, 6:46 PM EDTTornado WarningDTXLenawee59 min
Jun 21, 6:57 PM EDTSevere Thunderstorm WarningDTXLivingston27 min
Jun 21, 7:19 PM EDTTornado WarningCLELucas56 min
Jun 21, 7:28 PM EDTFlash Flood WarningCLELucas3 hr
Jun 21, 7:31 PM EDTSevere Thunderstorm WarningCLEOttawa59 min
Jun 21, 7:32 PM EDTSevere Thunderstorm WarningCLEWood43 min
Jun 21, 7:56 PM EDTFlash Flood WarningDTXLenawee3 hr
Jun 21, 8:14 PM EDTSevere Thunderstorm WarningCLEWood61 min
Jun 21, 8:20 PM EDTSevere Thunderstorm WarningCLEErie55 min
Jun 21, 8:36 PM EDTSevere Thunderstorm WarningDTXLenawee40 min
Jun 21, 8:44 PM EDTFlash Flood WarningDTXMonroe3 hr
Jun 21, 8:46 PM EDTTornado WarningCLEWood44 min
Jun 21, 8:51 PM EDTFlash Flood WarningCLEErie3 hr
Jun 21, 8:57 PM EDTSevere Thunderstorm WarningCLESandusky63 min
Jun 21, 9:00 PM EDTSevere Thunderstorm WarningCLELucas60 min
Jun 21, 9:10 PM EDTSevere Thunderstorm WarningDTXWashtenaw48 min
Jun 21, 9:19 PM EDTTornado WarningCLESeneca56 min
Jun 21, 9:40 PM EDTSevere Thunderstorm WarningCLEOttawa65 min
Jun 21, 9:52 PM EDTFlash Flood WarningCLEOttawa, Wood4 hr
Jun 21, 9:55 PM EDTSevere Thunderstorm WarningDTXMacomb35 min
Jun 21, 10:00 PM EDTSevere Thunderstorm WarningDTXWayne34 min
Jun 21, 10:21 PM EDTFlash Flood WarningCLELucas4 hr
Jun 21, 10:24 PM EDTTornado WarningCLEHuron51 min
Jun 21, 10:51 PM EDTSevere Thunderstorm WarningCLESeneca39 min
Jun 21, 11:00 PM EDTSevere Thunderstorm WarningCLEHancock30 min
Jun 21, 11:10 PM EDTFlash Flood WarningCLESeneca4 hr
Jun 21, 11:11 PM EDTSevere Thunderstorm WarningCLEHuron49 min
Jun 21, 11:12 PM EDTSevere Thunderstorm WarningCLECrawford48 min
Jun 21, 11:19 PM EDTSevere Thunderstorm WarningCLEAshland41 min
Jun 21, 11:28 PM EDTSevere Thunderstorm WarningCLERichland47 min
Jun 21, 11:33 PM EDTFlash Flood WarningCLEHuron3 hr
Jun 21, 11:36 PM EDTFlash Flood WarningCLECrawford3 hr
Jun 21, 11:44 PM EDTFlash Flood WarningCLEErie3 hr

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, 9.7 hours before the alert went out and 99 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 2006-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 574 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 2006-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.19395878Sfc1 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
574 J/kg
Mixed-layer CIN
-167 J/kg
Mixed-layer LCL
950 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.1
Supercell composite
3.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 21, 2:06 PM EDTMesoscale DiscussionSPCAlger, Baraga, Dickinson, Gogebic, Houghton, Iron and 4 more84 min
Jun 21, 2:28 PM EDTSevere Thunderstorm WatchSPCAlger, Baraga, Delta, Dickinson, Gogebic, Houghton and 5 more7 hr
Jun 21, 3:28 PM EDTMesoscale DiscussionSPCBerrien, Branch, Cass, Hillsdale, Lenawee, Saint Joseph92 min
Jun 21, 4:06 PM EDTTornado WatchSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 7 more7 hr
Jun 21, 4:19 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Arenac, Bay, Benzie and 21 more86 min
Jun 21, 5:25 PM EDTMesoscale DiscussionSPCLenawee, Livingston, Monroe, Washtenaw, Wayne35 min
Jun 21, 5:38 PM EDTMesoscale DiscussionSPCAlcona, Alger, Alpena, Antrim, Baraga, Benzie and 21 more97 min
Jun 21, 2:38 AM EDTMesoscale DiscussionSPCAllen, Auglaize, Butler, Clermont, Darke, Hamilton and 7 more2 hr

Nearby

Tornado Watches in Ohio, 2006Tornado 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.