Alert archive / Michigan / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 562
The Storm Prediction Center issued this severe thunderstorm watch at Aug 1, 2002, 5:45 AM EDT for 10 counties in Michigan; Florence County, Wisconsin. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 1, 2002, 5:45 AM EDT (09:45 UTC)
- Expired
- Aug 1, 2002, 10:00 AM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
Counties Alger County, MI, Baraga County, MI, Delta County, MI, Dickinson County, MI, Houghton County, MI, Iron County, MI, Marquette County, MI, Menominee County, MI, Ontonagon County, MI, Schoolcraft County, MI, Florence County, WI
The radar
The Marquette radar (KMQT), 31 km from the middle of the area, began a volume at 09:48 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
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 6:08 AM EDT | Severe Thunderstorm Warning | MQT | Baraga | 67 min |
| Aug 1, 6:15 AM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Houghton | 45 min |
| Aug 1, 6:15 AM EDT | Severe Thunderstorm Warning | MQT | Iron | 60 min |
| Aug 1, 6:25 AM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Marquette | 80 min |
| Aug 1, 6:35 AM EDT | Severe Thunderstorm Warning | GRB | Florence, Forest | 55 min |
| Aug 1, 7:05 AM EDT | Severe Thunderstorm Warning | MQT | Alger, Delta | 70 min |
| Aug 1, 7:15 AM EDT | Severe Thunderstorm Warning | MQT | Iron | 45 min |
| Aug 1, 7:41 AM EDT | Severe Thunderstorm Warning | MQT | Schoolcraft | 79 min |
| Aug 1, 7:44 AM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Marquette, Menominee | 61 min |
| Aug 1, 7:45 AM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Marquette, Menominee | 60 min |
| Aug 1, 8:16 AM EDT | Severe Thunderstorm Warning | MQT | Delta | 59 min |
| Aug 1, 9:00 AM EDT | Flash Flood Warning | MQT | Delta | 2 hr |
| Aug 1, 9:14 AM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 61 min |
| Aug 1, 9:17 AM EDT | Severe Thunderstorm Warning | MQT | Marquette | 58 min |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 9.8 hours before the alert went out and 222 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
- 2905 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 1201 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 15.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 11:20 AM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Benzie and 35 more | 5 hr |
| Aug 1, 3:25 PM EDT | Severe Thunderstorm Watch | SPC | Alger, Alpena, Antrim, Baraga, Benzie, Charlevoix and 24 more | 6 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.