Alert archive / Michigan / Special Weather Statements in 2017
Special Weather Statement, NWS Detroit, MI
NWS Detroit, MI issued this special weather statement at Aug 3, 2017, 6:08 PM EDT for Genesee County, Saginaw County, Shiawassee County, Michigan. It was in force for 67 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 3, 2017, 6:08 PM EDT (22:08 UTC)
- Expired
- Aug 3, 2017, 7:15 PM EDT
- In force
- 67 min
- Issued by
- NWS Detroit, MI
Counties Genesee County, MI, Saginaw County, MI, Shiawassee County, MI
The radar
The Detroit radar (KDTX), 75 km from the middle of the area, began a volume at 22:08 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, 10.1 hours before the alert went out and 76 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
- 588 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 944 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 43 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 3, 4:00 PM EDT, 2 hours 8 minutes earlier.
Area forecast discussion, Aug 3, 4:00 PM EDT, 2 hours 8 minutes before
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</html>Hazardous weather outlook, Aug 3, 4:23 PM EDT, 1 hour 45 minutes before
Hazardous Weather Outlook National Weather Service Detroit/Pontiac MI 423 PM EDT Thu Aug 3 2017 MIZ047>049-053>055-060>063-068>070-075-076-082-083-040815- Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer- St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe- 423 PM EDT Thu Aug 3 2017 This hazardous weather outlook is for southeast Michigan. .DAY ONE...Tonight Scattered to numerous thunderstorms will continue to develop overhead and move into the region from the western Great Lakes. A few severe storms are possible through the evening with damaging winds to 60 mph, one inch hail, and flooding rain all possible. In addition, a tornado is possible in the vicinity of the warm front mainly along and north of the I-69 corridor through the Tri Cities and northern Thumb. Storm motion will be southwest to northeast at 25 mph. A second round of storms is expected overnight as a cold front approaches and moves through lower Michigan. These storms are not expected to be severe but may be capable of half inch hail and 40 mph wind gusts. .DAYS TWO THROUGH SEVEN...Friday through Wednesday There is a chance of thunderstorms Friday morning into early Friday afternoon as a cold front clears the State. .SPOTTER INFORMATION STATEMENT... Dispatchers please notify your emergency managers immediately. Spotter activation may be need this evening. LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-040815- 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- 423 PM EDT Thu Aug 3 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 to develop overhead and move into the region from the western Great Lakes. The strongest storms will be capable of damaging winds to 50 knots and one inch hail. In addition, a waterspout is possible in the vicinity of the warm front mainly north of Port Huron through Saginaw Bay. Storm motion will be southwest to northeast at 20 knots. A second round of storms is expected overnight as a cold front approaches and moves through Lake Huron and lower Michigan. These storms may be capable of half inch hail and 35 knot wind gusts. .DAYS TWO THROUGH SEVEN...Friday through Wednesday There is a chance of thunderstorms Friday morning into early Friday afternoon as a cold front clears the State. .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. BT
In the hours before
Special weather statement, Aug 3, 3:06 PM EDT, 3 hours 2 minutes before
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</html>Local storm report, Aug 3, 3:12 PM EDT, 2 hours 56 minutes before
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</html>Special weather statement, Aug 3, 4:27 PM EDT, 1 hour 41 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
427 PM EDT THU AUG 3 2017
MIZ069-032100-
Oakland MI-
427 PM EDT THU AUG 3 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN OAKLAND COUNTY UNTIL
500 PM EDT...
At 427 PM EDT, Doppler radar indicated a strong thunderstorm near
Milford, moving northeast at 20 mph.
Nickel size hail and winds in excess of 30 mph will be possible with
this storm.
This strong thunderstorm will be near...
West Bloomfield around 445 PM EDT.
Other locations impacted by this storm include Keego Harbor, Orchard
Lake, Commerce, New Hudson, Walled Lake, Bloomfield Township, White
Lake, Wolverine Lake, Wixom and Bloomfield Hills.
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 4243 8350 4244 8352 4252 8367 4269 8355
4257 8325
TIME...MOT...LOC 2027Z 219DEG 18KT 4254 8355
SCSpecial weather statement, Aug 3, 5:12 PM EDT, 56 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
512 PM EDT THU AUG 3 2017
MIZ062-063-069-070-032215-
Macomb-Lapeer-Oakland-St. Clair-
512 PM EDT THU AUG 3 2017
...STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN LAPEER...
NORTHEASTERN OAKLAND...MACOMB AND ST. CLAIR COUNTIES...
At 512 PM EDT, a strong thunderstorm was located near Romeo, moving
northeast at 25 mph.
Winds in excess of 40 mph and half inch hail are possible with this
storm.
Locations impacted include...
Troy, Port Huron, New Baltimore, Richmond, St. Clair, Imlay City,
Romeo, Almont, Yale, Capac, Lakeport, Sterling Heights, Rochester,
Marysville, Marine City, Armada, Memphis, Dryden, Emmett and Macomb
Township.
Torrential rainfall is also occurring and may cause localized
flooding. Move indoors while these storms move through the region.
LAT...LON 4297 8238 4296 8242 4294 8245 4289 8247
4285 8247 4281 8248 4278 8247 4276 8247
4271 8249 4257 8320 4288 8319 4316 8300
4316 8291 4317 8250
TIME...MOT...LOC 2111Z 221DEG 23KT 4280 8311
BTSpecial weather statement, Aug 3, 5:17 PM EDT, 51 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
517 PM EDT THU AUG 3 2017
MIZ068-069-075-076-032215-
Livingston-Oakland-Washtenaw-Wayne-
517 PM EDT THU AUG 3 2017
...STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN WAYNE...OAKLAND...
LIVINGSTON AND WASHTENAW COUNTIES...
At 517 PM EDT, a strong thunderstorm was located near Chelsea and
near Novi, moving northeast at 25 mph.
Winds in excess of 40 mph and half inch hail are possible with
these storms.
Locations impacted include...
Ann Arbor, Livonia, Troy, Southfield, Pontiac, Novi, Hartland,
Howell, Brighton, Milford, Holly, Chelsea, Dexter, Oxford,
Fowlerville, Pinckney, Manchester, Canton, Royal Oak and Hamburg.
The storms 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.
LAT...LON 4278 8369 4283 8368 4288 8319 4247 8320
4207 8413 4277 8416
TIME...MOT...LOC 2116Z 227DEG 18KT 4238 8404
BTSpecial weather statement, Aug 3, 6:08 PM EDT, 0 minutes before
Special Weather Statement National Weather Service Detroit/Pontiac MI 608 PM EDT THU AUG 3 2017 MIZ053-060-061-032315- Shiawassee-Genesee-Saginaw- 608 PM EDT THU AUG 3 2017 ...STRONG THUNDERSTORMS WILL AFFECT SAGINAW...SHIAWASSEE AND WESTERN GENESEE COUNTIES... At 607 PM EDT, radar indicated strong thunderstorms along a line extending from Owosso to Waverly. Movement was northeast at 25 mph. Winds in excess of 40 mph and half inch hail are possible with these storms. Locations impacted include... Flint, Saginaw, Owosso, Fenton, Flushing, Frankenmuth, Durand, Clio, Chesaning, Perry, St. Charles, Birch Run, Laingsburg, New Lothrop, Swartz Creek, Linden, Corunna, Mount Morris, Zilwaukee and Montrose. Torrential rainfall is also occurring with these storms, and may cause localized flooding. Do not drive your vehicle through flooded roadways. These storms 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. LAT...LON 4348 8437 4348 8370 4278 8369 4278 8436 TIME...MOT...LOC 2207Z 209DEG 22KT 4300 8419 4275 8465 BT
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 8:21 PM EDT | Special Weather Statement | DTX | Genesee | 39 min |
| Aug 2, 8:53 PM EDT | Areal Flood Advisory | DTX | Genesee | 112 min |
| Aug 3, 12:52 PM EDT | Special Weather Statement | DTX | Macomb | 38 min |
| Aug 3, 1:28 PM EDT | Special Weather Statement | DTX | Lapeer | 47 min |
| Aug 3, 1:36 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Macomb, Oakland | 58 min |
| Aug 3, 2:29 PM EDT | Areal Flood Advisory | DTX | Macomb | 3 hr |
| Aug 3, 2:32 PM EDT | Special Weather Statement | DTX | Oakland | 28 min |
| Aug 3, 3:06 PM EDT | Special Weather Statement | DTX | Sanilac | 24 min |
| Aug 3, 4:05 PM EDT | Gale Watch | DTX | 12 hr | |
| Aug 3, 4:05 PM EDT | Small Craft Advisory | DTX | 54 hr | |
| Aug 3, 4:27 PM EDT | Special Weather Statement | DTX | Oakland | 33 min |
| Aug 3, 5:12 PM EDT | Special Weather Statement | DTX | Macomb, Saint Clair | 63 min |
| Aug 3, 5:17 PM EDT | Special Weather Statement | DTX | Livingston, Oakland, Washtenaw | 58 min |
| Aug 3, 6:17 PM EDT | Areal Flood Advisory | DTX | Macomb, Oakland | 3 hr |
| Aug 3, 6:28 PM EDT | Special Weather Statement | DTX | Oakland | 62 min |
| Aug 3, 7:13 PM EDT | Special Weather Statement | DTX | Bay, Midland | 62 min |
| Aug 3, 7:31 PM EDT | Special Weather Statement | DTX | Wayne | 29 min |
Nearby
Special Weather Statements in Michigan, 2017Every special weather statement in 2017
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.