Alert archive / Michigan / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 528

June 30, 200418 counties in Michigan; 11 counties in Minnesota; 16 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Jun 30, 2004, 2:55 PM EDT for 18 counties in Michigan; 11 counties in Minnesota; 16 counties in Wisconsin. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jun 30, 2004, 2:55 PM EDT (18:55 UTC)
Expired: Jun 30, 2004, 10:00 PM EDT
In force: 7 hr
Issued by: the Storm Prediction Center

All 45 counties

Alger County, MI, Baraga County, MI, Charlevoix County, MI, Cheboygan County, MI, Chippewa County, MI, Delta County, MI, Dickinson County, MI, Emmet County, MI, Gogebic County, MI, Houghton County, MI, Iron County, MI, Keweenaw County, MI, Luce County, MI, Mackinac County, MI, Marquette County, MI, Menominee County, MI, Ontonagon County, MI, Schoolcraft County, MI, Aitkin County, MN, Benton County, MN, Carlton County, MN, Chisago County, MN, Isanti County, MN, Itasca County, MN, Kanabec County, MN, Lake County, MN, Mille Lacs County, MN, Pine County, MN, Saint Louis County, MN, Ashland County, WI, Barron County, WI, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Florence County, WI, Forest County, WI, Iron County, WI, Marinette County, WI, Oneida County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Sawyer County, WI, Vilas County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 177 km from the middle of the area, began a volume at 18:56 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.

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 30, 4:54 PM EDT	Severe Thunderstorm Warning	APX	Chippewa	81 min
Jun 30, 5:20 PM EDT	Severe Thunderstorm Warning	MQT	Baraga	25 min
Jun 30, 5:47 PM EDT	Severe Thunderstorm Warning	MQT	Houghton	43 min
Jun 30, 6:06 PM EDT	Severe Thunderstorm Warning	DLH	Carlton	54 min
Jun 30, 6:21 PM EDT	Severe Thunderstorm Warning	MQT	Schoolcraft	24 min
Jun 30, 6:28 PM EDT	Severe Thunderstorm Warning	MQT	Luce	62 min
Jun 30, 6:48 PM EDT	Severe Thunderstorm Warning	MQT	Marquette	57 min
Jun 30, 7:22 PM EDT	Severe Thunderstorm Warning	MQT	Alger	38 min
Jun 30, 7:45 PM EDT	Severe Thunderstorm Warning	MQT	Delta	45 min
Jun 30, 8:30 PM EDT	Severe Thunderstorm Warning	MQT	Delta	45 min
Jun 30, 8:36 PM EDT	Severe Thunderstorm Warning	MQT	Schoolcraft	24 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

Minneapolis, MN (KMPX), launched 12:00Z, 6.9 hours before the alert went out and 351 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1785 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 15 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.

Issued	Product	Office	Counties	Lasted
Jun 30, 2:15 PM EDT	Mesoscale Discussion	SPC	Alger, Baraga, Chippewa, Dickinson, Gogebic, Houghton and 7 more	90 min
Jun 30, 5:52 PM EDT	Mesoscale Discussion	SPC	Alger, Baraga, Charlevoix, Cheboygan, Chippewa, Delta and 11 more	83 min
Jun 30, 3:57 PM EDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Carver, Cottonwood, Dakota, Dodge and 19 more	2 hr

Nearby

Severe Thunderstorm Watches in Michigan, 2004 Severe Thunderstorm Watches in Wisconsin, 2004 Severe Thunderstorm Watches in Minnesota, 2004 Every severe thunderstorm watch in 2004

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.