Alert archive / Wisconsin / Tornado Warnings in 2002
Tornado Warning 19, NWS Green Bay, WI
NWS Green Bay, WI issued this tornado warning at Sep 30, 2002, 7:15 PM CDT for Marathon County, Wood County, Wisconsin. It was in force for 45 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 30, 2002, 7:15 PM CDT (00:15 UTC)
- Expired
- Sep 30, 2002, 8:00 PM CDT
- In force
- 45 min
- Issued by
- NWS Green Bay, WI
- Area
- Counties, with a storm outline in the text
Counties Marathon County, WI, Wood County, WI
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 30, 7:18 PM CDT | Hail 0.75 | Spencer, WI | |
| Sep 30, 7:28 PM CDT | Thunderstorm Wind 52 E | Marshfield, WI | |
| Sep 30, 7:30 PM CDT | Thunderstorm Wind 50 E | Spencer, WI |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 30, 3:05 PM CDT | Tornado Watch | SPC | 5 hr |
| Sep 30, 6:25 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.3 hours before the alert went out and 144 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
- 322 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 1725 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 237 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 30, 7:29 PM CDT | Tornado Warning | GRB | Oneida | 61 min |
| Sep 30, 7:43 PM CDT | Tornado Warning | GRB | Lincoln | 32 min |
| Sep 30, 8:00 PM CDT | Tornado Warning | GRB | Wood | 30 min |
| Sep 30, 8:00 PM CDT | Tornado Warning | GRB | Wood | 30 min |
| Sep 30, 8:15 PM CDT | Severe Thunderstorm Warning | GRB | Lincoln | 45 min |
| Sep 30, 8:15 PM CDT | Severe Thunderstorm Warning | GRB | Lincoln | 45 min |
Nearby
Tornado Warnings in Wisconsin, 2002Every tornado warning in 2002Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.