Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 99, NWS Twin Cities, MN

May 30, 1998Benton County, Mille Lacs County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 30, 1998, 6:46 PM CDT for Benton County, Mille Lacs County, Minnesota. It was in force for 59 min. 1 report 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
May 30, 1998, 6:46 PM CDT (23:46 UTC)
Expired
May 30, 1998, 7:45 PM CDT
In force
59 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Benton County, MN, Mille Lacs County, MN

What was reported inside it

TimeReportWhereRemark
May 30, 7:10 PM CDTHail 0.75Princeton, MN

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.

IssuedProductOfficeLasted
May 30, 4:30 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.8 hours before the alert went out and 109 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 1998-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 1998-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 601 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1720 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
601 m²/s²
0-3 km storm-relative helicity
806 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 5:56 PM CDTSevere Thunderstorm WarningMPXBenton, Stearns54 min
May 30, 6:46 PM CDTSevere Thunderstorm WarningMPXIsanti59 min
May 30, 6:46 PM CDTSevere Thunderstorm WarningMPXIsanti, Mille Lacs49 min
May 30, 6:46 PM CDTSevere Thunderstorm WarningMPXBenton49 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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.