Alert archive / Michigan / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 564
The Storm Prediction Center issued this severe thunderstorm watch at Aug 1, 2002, 3:25 PM EDT for 30 counties in Michigan; 19 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 1, 2002, 3:25 PM EDT (19:25 UTC)
- Expired
- Aug 1, 2002, 9:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 49 counties
Alger County, MI, Alpena County, MI, Antrim County, MI, Baraga County, MI, Benzie County, MI, Charlevoix County, MI, Cheboygan County, MI, Chippewa County, MI, Crawford County, MI, Delta County, MI, Dickinson County, MI, Emmet County, MI, Grand Traverse County, MI, Iron County, MI, Kalkaska County, MI, Leelanau County, MI, Luce County, MI, Mackinac County, MI, Manistee County, MI, Marquette County, MI, Menominee County, MI, Missaukee County, MI, Montmorency County, MI, Ogemaw County, MI, Oscoda County, MI, Otsego County, MI, Presque Isle County, MI, Roscommon County, MI, Schoolcraft County, MI, Wexford County, MI, Brown County, WI, Calumet County, WI, Door County, WI, Florence County, WI, Forest County, WI, Kewaunee County, WI, Langlade County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Oconto County, WI, Outagamie County, WI, Portage County, WI, Shawano County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI
The radar
The Green Bay radar (KGRB), 118 km from the middle of the area, began a volume at 19:26 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.
Warnings issued inside it
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 3:32 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Schoolcraft | 58 min |
| Aug 1, 4:05 PM EDT | Severe Thunderstorm Warning | MQT | Luce | 55 min |
| Aug 1, 4:09 PM EDT | Severe Thunderstorm Warning | APX | Mackinac | 96 min |
| Aug 1, 4:17 PM EDT | Severe Thunderstorm Warning | APX | Chippewa | 88 min |
| Aug 1, 4:27 PM EDT | Severe Thunderstorm Warning | MQT | Schoolcraft | 33 min |
| Aug 1, 5:34 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Charlevoix, Emmet, Leelanau | 56 min |
| Aug 1, 5:43 PM EDT | Severe Thunderstorm Warning | APX | Mackinac | 47 min |
| Aug 1, 6:13 PM EDT | Severe Thunderstorm Warning | APX | Manistee | 47 min |
| Aug 1, 6:25 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau | 50 min |
| Aug 1, 6:32 PM EDT | Tornado Warning | APX | Cheboygan | 28 min |
| Aug 1, 6:50 PM EDT | Tornado Warning | APX | Presque Isle | 40 min |
| Aug 1, 6:58 PM EDT | Severe Thunderstorm Warning | APX | Manistee | 47 min |
| Aug 1, 7:13 PM EDT | Severe Thunderstorm Warning | APX | Grand Traverse | 47 min |
| Aug 1, 7:51 PM EDT | Tornado Warning | APX | Presque Isle | 39 min |
| Aug 1, 8:22 PM EDT | Severe Thunderstorm Warning | APX | Montmorency | 38 min |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.4 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.
- Mixed-layer CAPE
- 2319 J/kg
- Mixed-layer CIN
- -189 J/kg
- Mixed-layer LCL
- 922 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 5:45 AM EDT | Severe Thunderstorm Watch | SPC | Alger, Baraga, Delta, Dickinson, Houghton, Iron and 4 more | 4 hr |
| Aug 1, 11:20 AM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Benzie and 35 more | 5 hr |
| Aug 1, 6:30 PM EDT | Tornado Watch | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Cheboygan and 34 more | 6 hr |
| Aug 1, 7:10 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Berrien, Van Buren | 6 hr |
| Jul 31, 11:00 PM EDT | Severe Thunderstorm Watch | SPC | Douglas | 6 hr |
Nearby
Severe Thunderstorm Watches in Michigan, 2002Severe Thunderstorm Watches in Wisconsin, 2002Every severe thunderstorm watch in 2002
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.