Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 9, NWS Duluth, MN

May 18, 1996Bayfield County, Sawyer County, Washburn County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at May 18, 1996, 12:30 AM CDT for Bayfield County, Sawyer County, Washburn County, Wisconsin. It was in force for 60 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 18, 1996, 12:30 AM CDT (05:30 UTC)
Expired
May 18, 1996, 1:30 AM CDT
In force
60 min
Issued by
NWS Duluth, MN
Area
Whole counties

Counties Bayfield County, WI, Sawyer County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 101 km from the middle of the area, began a volume at 05:34 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

TimeReportWhereRemark
May 18, 1:15 AM CDTHail 0.88Stone Lake, 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, 5.5 hours before the alert went out and 225 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 1996-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3047 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 1996-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 square meters per square second.19395878Sfc1 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
3047 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
1569 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
270 m²/s²
Significant tornado parameter
1.0
Supercell composite
12.1

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
May 17, 8:10 PM CDTSevere Thunderstorm WarningDLHCass, Crow Wing60 min
May 17, 9:03 PM CDTSevere Thunderstorm WarningDLHAitkin, Itasca62 min
May 17, 9:59 PM CDTSevere Thunderstorm WarningDLHCarlton, Pine, Saint Louis61 min
May 17, 9:59 PM CDTSevere Thunderstorm WarningDLHKoochiching61 min
May 17, 10:47 PM CDTSevere Thunderstorm WarningDLHPine58 min
May 17, 11:05 PM CDTSevere Thunderstorm WarningDLHCarlton, Pine55 min
May 17, 11:05 PM CDTSevere Thunderstorm WarningDLHSaint Louis55 min
May 17, 11:48 PM CDTSevere Thunderstorm WarningDLHBurnett, Douglas, Washburn42 min
May 18, 1:33 AM CDTSevere Thunderstorm WarningDLHAshland, Price42 min
May 18, 1:33 AM CDTSevere Thunderstorm WarningDLHBayfield42 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1996Every severe thunderstorm warning in 1996

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.