Alert archive / Michigan / Special Marine Warnings in 2018

Special Marine Warning 21, NWS Detroit, MI

August 2, 2018

NWS Detroit, MI issued this special marine warning at Aug 2, 2018, 3:20 PM EDT. It was in force for 85 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 2, 2018, 3:20 PM EDT (19:20 UTC)
Expired
Aug 2, 2018, 4:45 PM EDT
In force
85 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Hail
0.0 in
Wind
40.0 mph

What forecasters said that day

The local office's own words before this special marine warning went out, 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 this special marine warning went out at Aug 2, 2:19 PM EDT, 1 hour 1 minute earlier.

Area forecast discussion, Aug 2, 2:19 PM EDT, 1 hour 1 minute before
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Hazardous weather outlook, Aug 2, 12:27 PM EDT, 2 hours 53 minutes before
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
1227 PM EDT Thu Aug 2 2018

MIZ060>063-068>070-075-076-082-083-031630-
Shiawassee-Genesee-Lapeer-St. Clair-Livingston-Oakland-Macomb-
Washtenaw-Wayne-Lenawee-Monroe-
1227 PM EDT Thu Aug 2 2018

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...This Afternoon and Tonight

There is a chance for thunderstorms late this evening. Severe
weather is not expected.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

There is a chance for thunderstorms Friday. Severe weather is not
expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-031630-
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-
1227 PM EDT Thu Aug 2 2018

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

.DAY ONE...This Afternoon and Tonight

There is a chance for thunderstorms, mainly this afternoon and
evening. Severe weather is not expected across Lake Erie and Lake St
Clair, however, a marginal risk for severe weather will be possible
across Saginaw Bay into northern Lake Huron. Main impacts with
stronger storms will be frequent lightning and heavy downpours,
however, the strongest thunderstorms could produce wind gusts up to
60 mph. Storm motion will be WSW at 30 mph.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

There is a chance for thunderstorms Friday. Severe weather is not
expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

MIZ047>049-053>055-031630-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-
1227 PM EDT Thu Aug 2 2018

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...This Afternoon and Tonight

There is a chance for thunderstorms this afternoon and evening. Main
impacts with stronger storms will be frequent lightning and heavy
downpours, however, the strongest thunderstorms could produce wind
gusts up to 60 mph. Storm motion will be WSW at 30 mph.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

There is a chance for thunderstorms Friday. Severe weather is not
expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

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

AM

In the hours before

Special weather statement, Aug 2, 12:37 PM EDT, 2 hours 43 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
1237 PM EDT THU AUG 2 2018

MIZ055-062-063-021730-
Lapeer MI-Sanilac MI-St. Clair MI-
1237 PM EDT THU AUG 2 2018

...SPECIAL WEATHER STATEMENT...

At 1235 PM EDT, Doppler radar indicated strong thunderstorms near
Peck, or 7 miles southwest of Sandusky, moving east at 30 mph.

Winds in excess of 40 mph and small hail will be possible with this
storm.

This strong thunderstorm will be near...
  Peck around 1240 PM EDT.
  Sandusky around 1250 PM EDT.
  Croswell, Carsonville and Applegate around 100 PM EDT.
  Port Sanilac around 115 PM EDT.

Other locations impacted by this storm include Goodland Township,
Burnside, Watertown, Jeddo, Lexington Heights, Lynn Township,
Roseburg, Forester, Amador and Juhl.

LAT...LON 4302 8308 4336 8309 4353 8258 4343 8254
      4326 8253 4315 8250
TIME...MOT...LOC 1635Z 249DEG 27KT 4332 8291

AA
Special weather statement, Aug 2, 2:02 PM EDT, 1 hour 18 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
202 PM EDT THU AUG 2 2018

MIZ047-021900-
Midland MI-
202 PM EDT THU AUG 2 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MIDLAND COUNTY UNTIL
300 PM EDT...

At 202 PM EDT, Doppler radar indicated a strong thunderstorm near Oil
City, or near Coleman, moving northeast at 20 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Coleman around 215 PM EDT.
  Edenville around 240 PM EDT.

Other locations impacted by this storm include Hope and North
Bradley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4382 8460 4381 8437 4383 8436 4383 8421
      4358 8454 4360 8461
TIME...MOT...LOC 1802Z 216DEG 19KT 4366 8459

MR
Special weather statement, Aug 2, 2:57 PM EDT, 23 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
257 PM EDT THU AUG 2 2018

MIZ047-048-022000-
Bay MI-Midland MI-
257 PM EDT THU AUG 2 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BAY AND NORTHEASTERN
MIDLAND COUNTIES UNTIL 400 PM EDT...

At 257 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from near Edenville to Sanford. Movement was east at
30 mph.

Half inch hail and wind gusts up to 50 mph will be possible with
these storms.

Strong thunderstorms will be near...
  Midland around 315 PM EDT.
  Pinconning around 330 PM EDT.
  Linwood around 335 PM EDT.

Other locations impacted by these storms include Mount Forest,
Averill, Crump, Bombay, Willard and Hope.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4391 8403 4391 8391 4387 8392 4381 8392
      4377 8395 4377 8396 4376 8394 4376 8395
      4375 8396 4369 8392 4363 8441 4370 8438
      4381 8440 4381 8437 4383 8436 4383 8417
      4391 8417 4393 8405
TIME...MOT...LOC 1857Z 253DEG 27KT 4382 8430 4373 8429 4366 8436

MR

The office that day

Everything else NWS Detroit, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 1, 8:44 PM EDTSpecial Weather StatementDTXHuron, Sanilac61 min
Aug 2, 12:37 PM EDTSpecial Weather StatementDTXSanilac53 min
Aug 2, 1:45 PM EDTSpecial Marine WarningDTX32 min
Aug 2, 2:02 PM EDTSpecial Weather StatementDTXMidland58 min
Aug 2, 2:57 PM EDTSpecial Weather StatementDTXBay, Midland63 min
Aug 2, 4:10 PM EDTSpecial Weather StatementDTXHuron65 min
Aug 2, 4:43 PM EDTSevere Thunderstorm WarningDTXHuron45 min
Aug 2, 4:45 PM EDTSpecial Marine WarningDTX39 min
Aug 2, 5:00 PM EDTSpecial Weather StatementDTXBay, Midland60 min
Aug 2, 5:10 PM EDTSpecial Marine WarningDTX50 min
Aug 2, 6:00 PM EDTSpecial Weather StatementDTXBay, Saginaw60 min
Aug 2, 6:28 PM EDTSpecial Weather StatementDTXHuron77 min
Aug 2, 6:40 PM EDTSpecial Marine WarningDTX35 min

Nearby

Special Marine Warnings in Michigan, 2018Every special marine warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.