Alert archive / Michigan / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 44, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jul 9, 2020, 9:41 PM EDT for Livingston County, Washtenaw County, Michigan. It was in force for 48 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 9, 2020, 9:41 PM EDT (01:41 UTC)
- Expired
- Jul 9, 2020, 10:29 PM EDT
- In force
- 48 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Livingston County, MI, Washtenaw County, MI
The radar
The Detroit radar (KDTX), 45 km from the middle of the area, began a volume at 01:44 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, 1.7 hours before the alert went out and 49 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
- 1121 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1658 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 20 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 9, 7:33 PM EDT, 2 hours 8 minutes earlier.
Area forecast discussion, Jul 9, 7:33 PM EDT, 2 hours 8 minutes before
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</html>Hazardous weather outlook, Jul 9, 3:59 PM EDT, 5 hours 42 minutes before
Hazardous Weather Outlook National Weather Service Detroit/Pontiac MI 359 PM EDT Thu Jul 9 2020 MIZ047-048-053-060>062-068>070-075-076-082-083-102000- Midland-Bay-Saginaw-Shiawassee-Genesee-Lapeer-Livingston-Oakland- Macomb-Washtenaw-Wayne-Lenawee-Monroe- 359 PM EDT Thu Jul 9 2020 This hazardous weather outlook is for portions of southeast Michigan. .DAY ONE...This Afternoon and Tonight A Heat Advisory remains in effect today. Please see the latest urgent weather message for details. Scattered thunderstorms are possible through mid evening. The strongest storms are not expected to become severe but will be capable of brief heavy rainfall and wind gusts around 40 mph while moving northeast at 15 mph. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Scattered thunderstorms are again possible on Friday and Friday evening as a cold front moves in. The chance for severe thunderstorms remains low. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today and tonight. MIZ049-054-055-063-102000- Huron-Tuscola-Sanilac-St. Clair- 359 PM EDT Thu Jul 9 2020 This hazardous weather outlook is for portions of southeast Michigan. .DAY ONE...This Afternoon and Tonight Scattered thunderstorms are possible through mid evening. The strongest storms are not expected to become severe but will be capable of brief heavy rainfall and wind gusts around 40 mph while moving northeast at 15 mph. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Scattered thunderstorms are again possible on Friday and Friday evening as a cold front moves in. The chance for severe thunderstorms remains low. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today and tonight. LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-102000- 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- 359 PM EDT Thu Jul 9 2020 This hazardous weather outlook is for portions of Lake Erie, Lake Huron and Lake St Clair. .DAY ONE...This Afternoon and Tonight Isolated to scattered thunderstorms are possible from mid afternoon through mid evening for the nearshore waters. The strongest storms will be capable of brief heavy rainfall and wind gusts around 30 kt while moving northeast at 15 kt. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Scattered thunderstorms are again possible on Friday and Friday evening as a cold front moves in. The chance for severe thunderstorms remains low. .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. AA
In the hours before
Local storm report, Jul 9, 8:40 PM EDT, 1 hour 1 minute 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 9, 8:40 PM EDT | Special Weather Statement | DTX | Genesee | 65 min |
| Jul 9, 9:03 PM EDT | Special Weather Statement | DTX | Livingston | 57 min |
| Jul 9, 9:16 PM EDT | Special Weather Statement | DTX | Monroe | 44 min |
| Jul 9, 9:28 PM EDT | Special Weather Statement | DTX | Livingston | 62 min |
| Jul 9, 9:35 PM EDT | Special Weather Statement | DTX | Washtenaw | 40 min |
| Jul 9, 9:56 PM EDT | Special Weather Statement | DTX | Washtenaw | 49 min |
| Jul 9, 10:23 PM EDT | Special Weather Statement | DTX | Oakland | 52 min |
| Jul 9, 11:01 PM EDT | Special Weather Statement | DTX | Genesee, Oakland | 59 min |
| Jul 9, 11:42 PM EDT | Special Weather Statement | DTX | Lapeer | 63 min |
| Jul 10, 10:24 AM EDT | Special Weather Statement | DTX | Lenawee | 51 min |
| Jul 10, 10:53 AM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 52 min |
| Jul 10, 11:21 AM EDT | Special Weather Statement | DTX | Washtenaw | 39 min |
| Jul 10, 11:58 AM EDT | Severe Thunderstorm Warning | DTX | Monroe, Washtenaw, Wayne | 46 min |
| Jul 10, 1:06 PM EDT | Special Weather Statement | DTX | Macomb, Oakland, Wayne | 54 min |
| Jul 10, 1:23 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland | 52 min |
| Jul 10, 1:57 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 63 min |
| Jul 10, 2:44 PM EDT | Special Marine Warning | DTX | 61 min | |
| Jul 10, 2:45 PM EDT | Special Weather Statement | DTX | Saint Clair | 60 min |
| Jul 10, 2:51 PM EDT | Special Marine Warning | DTX | 39 min | |
| Jul 10, 3:06 PM EDT | Flash Flood Watch | DTX | Genesee, Huron, Lapeer, Macomb, Oakland, Saint Clair and 3 more | 10 hr |
| Jul 10, 7:51 PM EDT | Areal Flood Advisory | DTX | Bay, Saginaw, Tuscola | 3 hr |
Nearby
Severe Thunderstorm Warnings in Michigan, 2020Every severe thunderstorm warning in 2020
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.