Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 152, NWS Duluth, MN

August 16, 1998Aitkin County, Itasca County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Aug 16, 1998, 9:19 PM CDT for Aitkin County, Itasca County, Minnesota. It was in force for 61 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
Aug 16, 1998, 9:19 PM CDT (02:19 UTC)
Expired
Aug 16, 1998, 10:20 PM CDT
In force
61 min
Issued by
NWS Duluth, MN
Area
Whole counties

Counties Aitkin County, MN, Itasca County, MN

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 16, 4:15 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 16, 9:15 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.3 hours before the alert went out and 246 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 00:00Z on 1998-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2752 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 1998-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 square meters per square second.193958Sfc1 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
2752 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1075 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
256 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 Duluth, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 16, 7:11 PM CDTSevere Thunderstorm WarningDLHCass64 min
Aug 16, 7:41 PM CDTSevere Thunderstorm WarningDLHSaint Louis59 min
Aug 16, 8:02 PM CDTSevere Thunderstorm WarningDLHCass58 min
Aug 16, 8:36 PM CDTSevere Thunderstorm WarningDLHLake, Saint Louis64 min
Aug 16, 8:40 PM CDTSevere Thunderstorm WarningDLHLake, Saint Louis60 min
Aug 16, 9:05 PM CDTSevere Thunderstorm WarningDLHCass45 min
Aug 16, 9:55 PM CDTSevere Thunderstorm WarningDLHCass, Crow Wing55 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; the sounding from the Mesonet's radiosonde archive.