Lake St. Clair, 2017

Marine Thunderstorm Winds in Lake St. Clair, July 1, 2017

July 1, 2017 · NWS DTX · 2 events in 1 county or zone

Thunderstorms moving through Lake St. Clair produced wind gusts to 46 mph.

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 to 46 mph.

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 30, 5:57 PM EST, 19 hours 31 minutes earlier.

Area forecast discussion, Jun 30, 5:57 PM EST, 19 hours 31 minutes before
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Hazardous weather outlook, Jun 30, 3:30 PM EST, 21 hours 58 minutes before
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
430 PM EDT Fri Jun 30 2017

MIZ047>049-053>055-060>063-068>070-075-076-082-083-011045-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
430 PM EDT Fri Jun 30 2017

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...Tonight

Scattered to numerous thunderstorms will continue over the region
mainly along and south of the I-69 corridor during late afternoon
and evening. The primary hazard will be heavy rainfall and potential
flooding, although there is a slight risk for severe wind gusts to
60 mph as storms move from southwest to northeast at 35 mph.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms will again be possible Saturday afternoon, but severe
weather is not anticipated at this time.

.SPOTTER INFORMATION STATEMENT...

Dispatchers...Please notify your emergency management. Spotter
activation may be needed during late afternoon or evening.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-011045-
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-
430 PM EDT Fri Jun 30 2017

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

.DAY ONE...Tonight

Scattered to numerous thunderstorms will continue over the region
mainly south of Lake Huron through Lake St Clair and western Lake
Erie during late afternoon and evening. There is a slight risk of
severe weather with the primary hazard being wind gusts to 50 knots
as storms move from southwest to northeast at 30 knots.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms will again be possible Saturday afternoon, but severe
weather is not anticipated at this time.

.SPOTTER INFORMATION STATEMENT...

Dispatchers...Please notify your emergency management. Spotter
activation may be needed during late afternoon or evening.

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

BT

The radar

The Detroit radar (KDTX), 53 km away, was scanning. The volume nearest the first event began at 18:27 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
July 1, 1:28 PM EST
Where
Lake St Clair (U.S. Portion) forecast zone, 2.57 mi NW of Metropolitan Beach
Measured
40 kt (46 mph) measured gust
Reported by
ASOS
Coordinates
42.610, -82.830

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

When
July 1, 1:49 PM EST
Where
Lake St Clair (U.S. Portion) forecast zone, 1.38 mi S of Grosse Pointe
Measured
34 kt (39 mph) measured gust
Reported by
C-MAN Station
Coordinates
42.360, -82.910

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

More

Every storm in Lake St. Clair in 2017Every state in 2017This 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 2026-10-01. Each event’s entry at NCEI: 714118, 714119.