Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 73, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at May 30, 1998, 8:08 PM CDT for Burnett County, Wisconsin. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 30, 1998, 8:08 PM CDT (01:08 UTC)
- Expired
- May 30, 1998, 9:10 PM CDT
- In force
- 62 min
- Issued by
- NWS Duluth, MN
- Area
- Whole counties
County Burnett County, WI
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.1 hours before the alert went out and 148 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
- 1397 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1452 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 349 m²/s²
- 0-3 km storm-relative helicity
- 357 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 4.6
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Duluth, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at May 30, 2:30 PM CDT, 5 hours 38 minutes earlier.
Area forecast discussion, May 30, 2:30 PM CDT, 5 hours 38 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DULUTH MN 230 PM CDT SAT MAY 30 1998 MAIN CHALLENGE TONIGHT IS RESOLVING PRECIPITATION ACROSS THE AREA. ETA/NGM AND AVN ALL REASONABLY CONSISTENT IN REDEVELOPING SHOWERS AND THUNDERSTORMS ACROSS MUCH OF OUR CWA TONIGHT. THE MAIN EVENT SHOULD BE FURTHER SOUTH IN THE VICINITY OF THE WARM FRONT IN SOUTHERN MINNESOTA...BUT AS SPC JUST INDICATED IN A MESOSCALE DISCUSSION...THERE IS INCREASING POTENTIAL FOR ELEVATED SEVERE THUNDERSTORMS WITH SEVERE HAIL FROM CENTRAL MINNESOTA INTO NORTHERN WISCONSIN INTO THIS EVENING. STORMS HAVE INTENSIFIED CONSIDERABLY WITHIN THE LAST HALF HOUR FROM PARK RAPIDS INTO NW WI. ETA SEEMS TO HAVE THE BEST HANDLE ON FEATURES AND BASICALLY FAVOR THAT MODEL FOR TONIGHT. STRENGTHENING JET MOVING ACROSS NORTHWEST ONTARIO...AND JET SEGMENT APPROACHING THE UPPER MIDWEST WILL COMBINE TO GENERATE STRONG UPWARD VERTICAL MOTION ACROSS CNTRL/EC MINNESOTA INTO NORTHERN WISCONSIN THROUGH MIDNIGHT OR SHORTLY AFTER. ETA ALSO SHOWS QUITE A BIT OF DIVERGENCE ACROSS THIS AREA THROUGH THIS EVENING...AND SOME LOW LEVEL THETA-E ADVECTION. WITH PRECIPITABLE WATER OF 1.30 INCHES...COULD BE SOME HEAVY RAIN TOO...WITH TRAINING ECHOS ALREADY DROPPING BETWEEN 2 AND 3 INCHES TODAY IN OUR FURTHER SOUTH COUNTIES IN WISCONSIN. NEXT PROBLEM IS COLD FRONT DROPPING SOUTHWARD THROUGH SOUTH CENTRAL CANADA. WINDS WILL CRANK UP OVERNIGHT AS CAA MAXIMIZES LATER IN THE NIGHT. AS WINDS BECOME NORTHWEST...THEY SHOULD INCREASE TO 15 TO 25 MPH AS THE NIGHT WEARS ON. FOR TONIGHT...WOULD RECOMMEND OCCASIONAL SHOWERS AND THUNDERSTORMS FROM THE IRON RANGE SOUTHWARD...WITH SCATTERED POPS FURTHER NORTH. ALSO NEED TO KEEP THE POSSIBLY SEVERE WORDING WITH LARGE HAIL AND DAMAGING WINDS STILL A THREAT THIS EVENING. RAIN SHOULD END LATER IN THE NIGHT...BUT IT WILL REMAIN MOSTLY CLOUDY. LOWS SHOULD RANGE FROM THE LOWER 40S NORTH TO THE LOWER 50S FURTHER SOUTH INTO NW WI. DAP
In the hours before
Local storm report, May 30, 4:52 PM CDT, 3 hours 16 minutes before
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</html>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; the sounding from the Mesonet's radiosonde archive.