Wisconsin, 2017

Rip Current in Wisconsin, August 7, 2017

August 7, 2017 · NWS MKX · 1 event in 1 county or zone

An 18 year old man drowned in Kenosha harbor after jumping into Lake Michigan from North Pier. Structural currents likely contributed to the man being pulled underwater.

Where it happened

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The toll

Deaths
1
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS MKX wrote it up.

An 18 year old man drowned in Kenosha harbor after jumping into Lake Michigan from North Pier. Structural currents likely contributed to the man being pulled underwater.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Milwaukee, WI wrote its last area forecast discussion before the first event at Aug 7, 2:04 PM CST, 3 hours 26 minutes earlier.

Area forecast discussion, Aug 7, 2:04 PM CST, 3 hours 26 minutes before
Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
304 PM CDT Mon Aug 7 2017

.TONIGHT AND TUESDAY...Forecast Confidence Is High.

High pressure will dominate this period. A much drier airmass has
moved in from the northeast as noted by isodrosotherm analysis
and area and less cu coverage in the northeast cwa. Core of the
high slides to our south on Tuesday with a light westerly flow
noted. Mid level ridging and the dry airmass prevails with some
bump in 925 temps.

.TUESDAY NIGHT THROUGH THURSDAY...Forecast Confidence Is Medium.

Models are in general agreement with bringing one 500 mb vorticity
maximum through the area Wednesday, with another Wednesday night,
and the main shortwave trough moving toward the area Thursday. At
the surface, high pressure is expected to slowly slide to the east
southeast Tuesday night and Wednesday. Weak low pressure
associated with the approaching shortwave trough will then slide
across central Minnesota into northwest Wisconsin.

Area forecast soundings are showing a few hundred J/kg of mean
layer CAPE developing Wednesday afternoon. This may combine with
the passing 500 mb vorticity maximum to bring a few showers. For
now, kept things dry Wednesday afternoon, but some low PoPs may be
needed in later forecasts. Temperatures look to remain near
seasonal normals Tuesday night and Wednesday. Lake breeze should
develop near Lake Michigan Wednesday afternoon.

There should be modest increases in column moisture later
Wednesday night into Thursday across the area. Forecast
soundings, after adjusting dew points, continue to show a few
hundred J/kg of mean layer CAPE for Thursday. It seems that the
low level jet will keep most of the activity during this time to
the west and north. The models have trended a bit drier during
this time.

For now, continued PoPs for showers and thunderstorms during this
period, highest in the western portions of the area. Temperatures
will remain near seasonal normals, with onshore winds near the
lake.

.THURSDAY NIGHT THROUGH MONDAY...Forecast Confidence Is Medium.

Models are in general agreement with the main 500 mb shortwave
trough sliding eastward across the region Thursday night. A weak
cold front also slides east through the region. Continued PoPs for
showers and thunderstorms during this time.

The GFS and Canadian models are showing the 500 mb low slowly
deepening Friday into early next week, as it slowly moves to the
east across the Great Lakes region. The ECMWF is keeping more of
an elongated shortwave trough over the region during this time.

Despite the differences between the models, there would likely be
several vorticity maxima rotating through the area during this
period. This should continue periodic chances for showers and
thunderstorms during this time. Temperatures still look to remain
near seasonal normals.

&&

.AVIATION(18Z TAFS)...

Drier air working in from the northeast as indicated via GOES 16
visible imagery nicely showing the cu/no cu demarcation. Overall
high pressure taking hold which will result in VFR mostly SKC into
Tuesday.

&&

.MARINE...

With high pressure settling across, northeast winds will ease
overnight. No small craft headlines in the foreseeable future.

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...None.
&&

Tonight/Tuesday and Aviation/Marine...Collar
Tuesday Night through Monday...Wood
Hazardous weather outlook, Aug 7, 2:38 PM CST, 2 hours 52 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Milwaukee/Sullivan WI
338 PM CDT Mon Aug 7 2017

WIZ046-047-051-052-056>060-062>072-082045-
Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
338 PM CDT Mon Aug 7 2017

This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin, and southeast Wisconsin.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Monday

There are chances for thunderstorms at times Wednesday night into
Monday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

LMZ643>646-082045-
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
338 PM CDT Mon Aug 7 2017

This Hazardous Weather Outlook is for portions of Lake Michigan.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Monday

There are chances for thunderstorms at times Thursday into
Sunday.

Wood
www.weather.gov/mkx

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 rip current. Local standard time, as filed.

Rip Current, Kenosha

When
August 7, 5:30 PM CST
Where
Kenosha forecast zone
Deaths
1 direct, 0 indirect
Reported by
Broadcast Media
Coordinates
42.573, -87.840 (the zone’s center; the record gives no point)

An 18 year old male drowned after jumping from North Pier into Kenosha Harbor. Structural currents below the surface of Lake Michigan likely contributed to the drowning.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Rip Current, Kenosha2017-08-0718MaleIn WaterDirect

What these are

Rip Current
A narrow, fast current flowing away from the beach that caused a drowning or rescue.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Wisconsin in 2017Every state in 2017This day in weather historyWarnings in Wisconsin, August 2017

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 706359.