Alert archive / Michigan / Special Weather Statements in 2021
Special Weather Statement, NWS Detroit, MI
NWS Detroit, MI issued this special weather statement at Aug 29, 2021, 4:07 PM EDT for Saginaw County, Shiawassee County, Michigan. It was in force for 83 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 29, 2021, 4:07 PM EDT (20:07 UTC)
- Expired
- Aug 29, 2021, 5:30 PM EDT
- In force
- 83 min
- Issued by
- NWS Detroit, MI
- Hail
- 0.00 in
- Wind
- 50
Counties Saginaw County, MI, Shiawassee County, MI
The radar
The Detroit radar (KDTX), 83 km from the middle of the area, began a volume at 20:11 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.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 8.1 hours before the alert went out and 83 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.
- Mixed-layer CAPE
- 1500 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 915 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -80 m²/s²
- 0-3 km storm-relative helicity
- -70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 weather statement went out at Aug 29, 1:41 PM EDT, 2 hours 26 minutes earlier.
Area forecast discussion, Aug 29, 1:41 PM EDT, 2 hours 26 minutes before
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</html>Hazardous weather outlook, Aug 29, 10:53 AM EDT, 5 hours 14 minutes before
Hazardous Weather Outlook National Weather Service Detroit/Pontiac MI 1053 AM EDT Sun Aug 29 2021 MIZ047>049-053>055-060>063-068>070-075-076-082-083-301500- Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer- St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe- 1053 AM EDT Sun Aug 29 2021 This hazardous weather outlook is for portions of southeast Michigan. .DAY ONE...Today and Tonight Scattered to numerous thunderstorms develop this afternoon as a cold front moves in from the Midwest. There is a SLIGHT risk for severe storm intensity mainly in the 2 PM to 10 PM time window with damaging wind gusts of 60 mph or greater being the primary hazard. Hail to around 1 inch and localized flooding are also possible as storms move west to east at 35 mph. .DAYS TWO THROUGH SEVEN...Monday through Saturday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today and tonight. LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-301500- 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- 1053 AM EDT Sun Aug 29 2021 This hazardous weather outlook is for portions of Lake Erie, Lake Huron and Lake St Clair. .DAY ONE...Today and Tonight Scattered to numerous thunderstorms develop this afternoon as a cold front moves in from the Midwest. There is a SLIGHT risk for severe storm intensity mainly in the 2 PM to 10 PM time window with damaging wind gusts of 60 mph or greater being the primary hazard. Hail to around 1 inch and localized flooding are also possible as storms move west to east at 35 mph. .DAYS TWO THROUGH SEVEN...Monday through Saturday No hazardous weather is expected at this time. .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. CB
In the hours before
Local storm report, Aug 29, 10:42 AM EDT, 5 hours 25 minutes before
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</html>Local storm report, Aug 29, 11:14 AM EDT, 4 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1114 AM EDT SUN AUG 29 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1153 PM HEAVY RAIN 5 SW FLINT 42.97N 83.75W
08/28/2021 M1.14 INCH GENESEE MI ASOS
3 HOUR TOTAL RAINFALL AT KFNT FLINT BISHOP AIRPORT.
0600 AM HEAVY RAIN 2 NNE MIDLAND 43.65N 84.21W
08/29/2021 M2.21 INCH MIDLAND MI COCORAHS
24 HOUR TOTAL RAINFALL.
0634 AM HEAVY RAIN 3 SW MIDLAND 43.59N 84.27W
08/29/2021 M1.67 INCH MIDLAND MI COCORAHS
24 HOUR TOTAL RAINFALL.
0700 AM HEAVY RAIN 2 SW OWOSSO 42.97N 84.20W
08/29/2021 M1.31 INCH SHIAWASSEE MI CO-OP OBSERVER
24 HOUR TOTAL RAINFALL.
0700 AM HEAVY RAIN 1 N SWARTZ CREEK 42.98N 83.83W
08/29/2021 M2.15 INCH GENESEE MI COCORAHS
24 HOUR TOTAL RAINFALL.
0730 AM HEAVY RAIN 2 NE CHESANING 43.21N 84.09W
08/29/2021 M2.42 INCH SAGINAW MI CO-OP OBSERVER
24 HOUR TOTAL RAINFALL.
0800 AM HEAVY RAIN 2 SSW NELSON 43.31N 84.24W
08/29/2021 M2.32 INCH SAGINAW MI COCORAHS
24 HOUR TOTAL RAINFALL.
0838 AM HEAVY RAIN 4 W MIDLAND 43.62N 84.31W
08/29/2021 M2.42 INCH MIDLAND MI COCORAHS
24 HOUR TOTAL RAINFALL.
0900 AM HEAVY RAIN 2 NE MIDLAND 43.64N 84.20W
08/29/2021 M1.72 INCH MIDLAND MI COCORAHS
24 HOUR TOTAL RAINFALL.
&&
KKLocal storm report, Aug 29, 12:49 PM EDT, 3 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1249 PM EDT SUN AUG 29 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY RAIN ELKTON 43.82N 83.18W
08/29/2021 M1.43 INCH HURON MI TRAINED SPOTTER
24 HOUR TOTAL RAINFALL.
0900 AM HEAVY RAIN 2 W PORT HURON 42.99N 82.47W
08/29/2021 M1.54 INCH ST. CLAIR MI COCORAHS
24 HOUR TOTAL RAINFALL.
&&
KKSpecial weather statement, Aug 29, 3:40 PM EDT, 27 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
340 PM EDT Sun Aug 29 2021
MIZ047-048-292045-
Bay MI-Midland MI-
340 PM EDT Sun Aug 29 2021
...A strong thunderstorm will impact portions of Bay and Midland
Counties through 445 PM EDT...
At 339 PM EDT, Doppler radar was tracking a strong thunderstorm near
Sanford, moving northeast at 40 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
This strong thunderstorm will be near...
Midland around 355 PM EDT.
Auburn around 400 PM EDT.
Bay City, Kawkawlin and Linwood around 410 PM EDT.
Other locations impacted by this storm include Laporte, Mount Forest,
Averill, Gordonville, Bombay, Porter Township, Crump, Poseyville,
Willard and Hope.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
southeastern Michigan.
&&
LAT...LON 4381 8461 4381 8437 4383 8436 4383 8417
4400 8417 4400 8405 4391 8404 4391 8391
4392 8390 4374 8393 4368 8390 4360 8369
4348 8370 4348 8382 4352 8382 4352 8405
4357 8405 4357 8417 4348 8417 4347 8461
TIME...MOT...LOC 1939Z 243DEG 36KT 4358 8435
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
KKSpecial weather statement, Aug 29, 4:07 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
407 PM EDT Sun Aug 29 2021
MIZ053-060-061-292130-
Shiawassee MI-Genesee MI-Saginaw MI-
407 PM EDT Sun Aug 29 2021
...Strong thunderstorms will impact portions of Saginaw, Shiawassee
and western Genesee Counties through 530 PM EDT...
At 406 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Ithaca to near Carson City to near Lake Odessa.
Movement was east at 35 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Strong thunderstorms will be near...
Merrill around 430 PM EDT.
St. Charles around 445 PM EDT.
Marion Springs around 455 PM EDT.
Oakley around 505 PM EDT.
Saginaw, Zilwaukee and Bridgeport around 510 PM EDT.
Chesaning and Laingsburg around 515 PM EDT.
Owosso and Corunna around 530 PM EDT.
Other locations impacted by these storms include Brant, Nelson,
Carrollton, Garfield, Arthur, Fenmore, Burt, Gera, Buena Vista
Township and Layton Corners.
People attending Huntington Event Park should seek safe shelter
immediately!
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
southeastern Michigan.
&&
LAT...LON 4348 8437 4348 8417 4357 8417 4357 8405
4352 8405 4352 8382 4348 8382 4348 8370
4322 8370 4321 8368 4321 8392 4278 8391
4277 8436
TIME...MOT...LOC 2006Z 256DEG 28KT 4331 8458 4310 8483 4280 8505
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
KKThe office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 8:18 PM EDT | Special Weather Statement | DTX | Saginaw | 72 min |
| Aug 28, 8:22 PM EDT | Special Weather Statement | DTX | Saint Clair, Sanilac | 68 min |
| Aug 28, 10:00 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 20 min |
| Aug 28, 10:17 PM EDT | Special Weather Statement | DTX | Genesee | 28 min |
| Aug 29, 1:53 AM EDT | Special Weather Statement | DTX | Bay, Midland | 67 min |
| Aug 29, 2:16 AM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 44 min |
| Aug 29, 2:32 AM EDT | Special Marine Warning | DTX | 42 min | |
| Aug 29, 3:40 PM EDT | Special Weather Statement | DTX | Bay, Midland | 65 min |
| Aug 29, 3:54 PM EDT | Special Marine Warning | DTX | 108 min | |
| Aug 29, 4:30 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 75 min |
| Aug 29, 4:38 PM EDT | Special Weather Statement | DTX | Huron | 67 min |
| Aug 29, 4:58 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 62 min |
| Aug 29, 5:11 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Genesee, Tuscola | 79 min |
| Aug 29, 5:25 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 65 min |
| Aug 29, 5:32 PM EDT | Special Marine Warning | DTX | 118 min | |
| Aug 29, 5:56 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 64 min |
| Aug 29, 5:58 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 62 min |
| Aug 29, 6:00 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 59 min |
| Aug 29, 6:13 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 77 min |
| Aug 29, 6:37 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 83 min |
| Aug 29, 6:45 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 75 min |
| Aug 29, 6:51 PM EDT | Special Marine Warning | DTX | 114 min | |
| Aug 29, 7:00 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 57 min |
| Aug 29, 7:23 PM EDT | Special Weather Statement | DTX | Monroe | 67 min |
| Aug 29, 7:29 PM EDT | Special Weather Statement | DTX | Wayne | 61 min |
| Aug 29, 7:30 PM EDT | Special Marine Warning | DTX | 68 min |
Nearby
Special Weather Statements in Michigan, 2021Every special weather statement in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.