Marine Thunderstorm Winds in Lake St. Clair, June 3, 2020

Name: Marine Thunderstorm Winds in Lake St. Clair, June 3, 2020
Start: 2020-06-03T02:27
End: 2020-06-03T02:32
Location: Lake St. Clair

June 3, 2020 · NWS DTX · 2 events in 1 county or zone

Thunderstorms moving through Lake St. Clair produced wind gusts around 50 knots.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 2

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 DTX wrote it up.

Thunderstorms moving through Lake St. Clair produced wind gusts around 50 knots.

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 Detroit, MI wrote its last area forecast discussion before the first event at Jun 3, 1:44 AM EST, 43 minutes earlier.

Area forecast discussion, Jun 3, 1:44 AM EST, 43 minutes before

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Hazardous weather outlook, Jun 2, 3:27 AM EST, 23 hours before

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
427 AM EDT Tue Jun 2 2020

MIZ047>049-053>055-060>063-068>070-075-076-082-083-030830-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
427 AM EDT Tue Jun 2 2020

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...Today and Tonight

Thunderstorms are likely tonight in the primary time window of
midnight to 6 AM. There is a slight risk outlook for storms to
maintain severe levels while moving through southeast Michigan. The
primary hazard is damaging wind gusts of 60 mph or greater. Large
hail near 1 inch is also possible along with heavy rainfall that
could lead to localized flooding. Storms are projected to move west
to east at 45 mph.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

There is a chance of thunderstorms Wednesday morning mainly toward
the Ohio border. These storms are not expected to be severe but could
produce pea size hail and heavy rainfall capable of localized
flooding.

Thunderstorms are possible again Friday as a cold front moves through
the region. These storms could approach severe levels Friday
afternoon.

.SPOTTER INFORMATION STATEMENT...

Dispatchers please notify your emergency managers immediately. Spotter
activation may be needed tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-030830-
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM
off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw
Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
427 AM EDT Tue Jun 2 2020

This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.

.DAY ONE...Today and Tonight

Thunderstorms are likely tonight in the primary time window of
midnight to 6 AM and mainly from Saginaw Bay southward. There is a
slight risk outlook for storms to maintain severe levels while moving
through southeast Michigan marine areas. The primary hazard is
damaging wind gusts of 50 knots or greater. Large hail near 1 inch
is also possible along with heavy rainfall. Storms are projected to
move west to east at 40 knots.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

There is a chance of thunderstorms Wednesday morning mainly toward
Lake Erie. These storms could produce pea size hail, wind gusts near
35 knots, and heavy rainfall.

Thunderstorms are possible again Friday as a cold front moves through
the region. These storms could approach severe levels Friday
afternoon.

.SPOTTER INFORMATION STATEMENT...

Dispatchers please notify your emergency managers immediately. Spotter
activation may be needed tonight.

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

BT

In the hours before

Special weather statement, Jun 3, 1:26 AM EST, 1 hour 1 minute before

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Special weather statement, Jun 3, 1:36 AM EST, 51 minutes before

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Local storm report, Jun 3, 1:45 AM EST, 42 minutes before

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Local storm report, Jun 3, 1:57 AM EST, 30 minutes before

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Special weather statement, Jun 3, 2:09 AM EST, 18 minutes before

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Local storm report, Jun 3, 2:20 AM EST, 7 minutes before

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The radar

The Detroit radar (KDTX), 53 km away, was scanning. The volume nearest the first event began at 07:27 UTC.

Open the radar archive at this moment

Event by event

2 marine thunderstorm wind. Local standard time, as filed.

Marine Thunderstorm Wind, Lake St Clair (U.S. Portion)

When: June 3, 2:27 AM EST
Where: Lake St Clair (U.S. Portion) forecast zone, 2.76 mi NW of Metropolitan Beach
Measured: 51 kt (59 mph) measured gust
Reported by: ASOS
Coordinates: 42.611, -82.834

Marine Thunderstorm Wind, Lake St Clair (U.S. Portion)

When: June 3, 2:32 AM EST
Where: Lake St Clair (U.S. Portion) forecast zone, 0.53 mi SSE of Metropolitan Beach
Measured: 34 kt (39 mph) measured gust
Reported by: C-MAN Station
Coordinates: 42.573, -82.796

What these are

Marine Thunderstorm Wind: Thunderstorm winds of 34 knots or more over coastal or lake waters.

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

The same day elsewhere

Every storm in Lake St. Clair in 2020 Every state in 2020 This day in weather history

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 2026-09-30. Each event’s entry at NCEI: 891467, 891471.