Alert archive / Michigan / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 79, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jul 29, 2023, 1:25 AM EDT for Monroe County, Michigan. It was in force for 40 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
- Jul 29, 2023, 1:25 AM EDT (05:25 UTC)
- Expired
- Jul 29, 2023, 2:05 AM EDT
- In force
- 40 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Monroe County, MI
The radar
The Detroit radar (KDTX), 87 km from the middle of the area, began a volume at 05:26 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 00:00Z, 5.4 hours before the alert went out and 89 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
- 1131 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1189 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 28, 11:42 PM EDT, 1 hour 43 minutes earlier.
Area forecast discussion, Jul 28, 11:42 PM EDT, 1 hour 43 minutes before
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</html>Hazardous weather outlook, Jul 28, 3:45 PM EDT, 9 hours 40 minutes before
Hazardous Weather Outlook National Weather Service Detroit/Pontiac MI 345 PM EDT Fri Jul 28 2023 MIZ047>049-053>055-060>063-068>070-075-076-082-083-290900- Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer- St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe- 345 PM EDT Fri Jul 28 2023 This hazardous weather outlook is for southeast Michigan. .DAY ONE...Tonight There is a slight chance of thunderstorms through early evening before thunderstorms become likely late this evening and then slowly taper off after midnight from north to south. Thunderstorms may be severe between the hours of 8 PM and 3 AM. Damaging winds of 60 MPH or greater is the main hazard, with a much lower chance of large hail and an isolated tornado. Flooding rainfall may also occur with the severe thunderstorms, especially south of I-69 where a flood watch is in effect through late tonight. Storm motion is expected to be from the northwest to the southeast at 35 mph. .DAYS TWO THROUGH SEVEN...Saturday through Thursday There is a slight chance of a thunderstorm on Saturday morning. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed tonight. LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-290900- 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- 345 PM EDT Fri Jul 28 2023 This hazardous weather outlook is for portions of Lake Erie, Lake Huron and Lake St Clair. .DAY ONE...Tonight There is a slight chance of thunderstorms through early evening before thunderstorms become likely by late this evening and then slowly taper off after midnight from north to south. Thunderstorms may be severe between the hours of 8 PM and 3 AM. Damaging winds of 50 knots or greater is the main hazard, with a much lower chance of large hail and a waterspout. Storm motion is expected to be southeast at 30 knots. .DAYS TWO THROUGH SEVEN...Saturday through Thursday There is a slight chance of a thunderstorm on Saturday morning for Lake St. Clair and the Michigan waters of Lake Erie. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed tonight. You can obtain your latest National Weather Service forecasts online at www.weather.gov/detroit. SF/RBP
In the hours before
Special weather statement, Jul 28, 7:50 PM EDT, 5 hours 35 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
750 PM EDT Fri Jul 28 2023
MIZ048-053-054-062-290100-
Bay MI-Tuscola MI-Lapeer MI-Saginaw MI-
750 PM EDT Fri Jul 28 2023
...A strong thunderstorm will impact portions of southern Tuscola,
northwestern Lapeer, southeastern Bay and northeastern Saginaw
Counties through 900 PM EDT...
At 750 PM EDT, Doppler radar was tracking a strong thunderstorm near
Zilwaukee, or near Saginaw, moving southeast at 25 mph.
HAZARD...Winds in excess of 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
This strong thunderstorm will be near...
Munger around 755 PM EDT.
Reese around 810 PM EDT.
Frankenmuth around 820 PM EDT.
Vassar around 830 PM EDT.
Millington around 845 PM EDT.
Mayville around 855 PM EDT.
Other locations impacted by this storm include Carrollton, East
Dayton, Arthur, Tuscola, Buena Vista Township, Gera, Gilford,
Watrousville, Silverwood and Indiantown.
People attending Munger Potato Festival , and Jolt Credit Union Event
Park should seek safe shelter immediately!
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.
&&
LAT...LON 4361 8390 4344 8311 4333 8311 4333 8312
4330 8312 4323 8334 4322 8368 4346 8405
TIME...MOT...LOC 2350Z 297DEG 21KT 4349 8386
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
DGLocal storm report, Jul 28, 9:16 PM EDT, 4 hours 9 minutes before
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</html>Special weather statement, Jul 28, 9:42 PM EDT, 3 hours 43 minutes before
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</html>Local storm report, Jul 28, 9:54 PM EDT, 3 hours 31 minutes before
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</html>Special weather statement, Jul 29, 12:47 AM EDT, 38 minutes before
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</html>The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 8:44 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Lapeer | 61 min |
| Jul 28, 9:42 PM EDT | Special Weather Statement | DTX | Oakland | 63 min |
| Jul 29, 12:47 AM EDT | Special Weather Statement | DTX | Lenawee | 58 min |
| Jul 29, 12:53 AM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 55 min |
| Jul 29, 1:30 AM EDT | Special Marine Warning | DTX | 60 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2023Every severe thunderstorm warning in 2023
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.