Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 144, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 15, 1998, 7:46 PM CDT for Saint Croix County, Wisconsin. It was in force for 34 min. 2 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
- Jun 15, 1998, 7:46 PM CDT (00:46 UTC)
- Expired
- Jun 15, 1998, 8:20 PM CDT
- In force
- 34 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 90 km from the middle of the area, began a volume at 00:47 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 15, 7:48 PM CDT | Hail 1.75 | Roberts, WI | Quarter to golfball size hail pummeled Badlands Golf course |
| Jun 15, 8:10 PM CDT | Hail 1.75 | Hudson, 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 nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.8 hours before the alert went out and 93 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
- 320 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1557 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 160046 RRA
SVRMSP
WIC109-160120-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
746 PM CDT MON JUN 15 1998
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN
* UNTIL 820 PM CDT
* AT AT 745 PM...SEVERE WEATHER SPOTTERS REPORTED A SEVERE STORM
WITH GOLF BALL SIZE HAIL NEAR ROBERTS OR 25 MILES WEST OF
MENOMONIE OR 25 MILES EAST OF ST PAUL. THE STORM WAS MOVING
WEST AT 15 MPH.
* SOME LOCATIONS AFFECTED
HUDSON
WILLOW STATE PARK
THIS IS A DANGEROUS STORM...WITH LARGE HAIL. STAY INDOORS AWAY
FROM WINDOWS.
JTIPTONThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 7:34 PM CDT | Severe Thunderstorm Warning | MPX | Barron | 36 min |
| Jun 15, 8:00 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 50 min |
| Jun 15, 8:05 PM CDT | Severe Thunderstorm Warning | MPX | Barron | 35 min |
| Jun 15, 8:16 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 34 min |
| Jun 15, 8:20 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 60 min |
| Jun 16, 3:25 PM CDT | Severe Thunderstorm Warning | MPX | Rusk | 30 min |
| Jun 16, 6:15 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 35 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 1998Every severe thunderstorm warning in 1998
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; radar from the NEXRAD Level II archive.