Alert archive / Michigan / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 39, NWS Detroit, MI

June 20, 2024Wayne County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jun 20, 2024, 3:58 PM EDT for Wayne County, Michigan. It was in force for 35 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
Jun 20, 2024, 3:58 PM EDT (19:58 UTC)
Expired
Jun 20, 2024, 4:33 PM EDT
In force
35 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Wayne County, MI

The radar

The Detroit radar (KDTX), 49 km from the middle of the area, began a volume at 20:01 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, 8.0 hours before the alert went out and 50 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.

Skew-T log-pSkew-T log-p diagram, Detroit, MI at 12:00Z on 2024-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 666 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2024-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
666 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
732 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

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 Jun 20, 3:53 PM EDT, 5 minutes earlier.

Area forecast discussion, Jun 20, 3:53 PM EDT, 5 minutes before
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Hazardous weather outlook, Jun 20, 4:48 AM EDT, 11 hours 10 minutes before
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
448 AM EDT Thu Jun 20 2024

MIZ047>049-053>055-060>063-210830-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-
448 AM EDT Thu Jun 20 2024

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...Today and Tonight

Isolated to scattered thunderstorms are possible today and again this
evening. The strongest storms will be capable of producing wind
gusts up to 60 mph. Storms will move toward the northeast at around
25 mph. Any storm will be capable of producing torrential rainfall.
Some localized flooding is possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Additional showers and thunderstorms are possible Friday, Saturday,
and Sunday. The strongest storms will be capable of producing wind
gusts up to 60 mph. Any storm will be capable of producing torrential
rainfall. Some localized flooding is possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-210830-
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-
448 AM EDT Thu Jun 20 2024

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

.DAY ONE...Today and Tonight

A Heat Advisory remains in effect through 10 PM today. Refer to the
latest Urgent Weather Message (NPW) for additional details.

Isolated to scattered thunderstorms are possible today and again this
evening. The strongest storms will be capable of producing wind
gusts up to 60 mph. Storms will move toward the northeast at around
25 mph. Any storm will be capable of producing torrential rainfall.
Some localized flooding is possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Additional showers and thunderstorms are possible Friday, Saturday,
and Sunday. The strongest storms will be capable of producing wind
gusts up to 60 mph. Any storm will be capable of producing torrential
rainfall. Some localized flooding is possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

MIZ068>070-075-076-082-083-210830-
Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
448 AM EDT Thu Jun 20 2024

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...Today and Tonight

Isolated to scattered thunderstorms are possible today and again this
evening. The strongest storms will be capable of producing wind
gusts up to 50 knots. Storms will move toward the northeast at
around 20 knots. Any storm will be capable of producing torrential
rainfall.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Additional showers and thunderstorms are possible Friday, Saturday,
and Sunday. The strongest storms will be capable of producing wind
gusts up to 50 knots. Any storm will be capable of producing torrential
rainfall.

.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.

KGK

In the hours before

Special weather statement, Jun 20, 2:33 PM EDT, 1 hour 25 minutes before
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Special weather statement, Jun 20, 3:02 PM EDT, 56 minutes before
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Special weather statement, Jun 20, 3:28 PM EDT, 30 minutes before
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Local storm report, Jun 20, 3:39 PM EDT, 19 minutes before
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Special weather statement, Jun 20, 3:49 PM EDT, 9 minutes before
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Local storm report, Jun 20, 3:56 PM EDT, 2 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 8:00 PM EDTSpecial Weather StatementDTXWashtenaw60 min
Jun 19, 8:26 PM EDTSevere Thunderstorm WarningDTXMacomb, Saint Clair64 min
Jun 19, 8:31 PM EDTAreal Flood AdvisoryDTXMacomb, Saint Clair4 hr
Jun 19, 8:34 PM EDTSpecial Weather StatementDTXWashtenaw56 min
Jun 19, 8:42 PM EDTSevere Thunderstorm WarningDTXWashtenaw47 min
Jun 19, 9:02 PM EDTSevere Thunderstorm WarningDTXOakland, Wayne45 min
Jun 19, 9:32 PM EDTSpecial Weather StatementDTXHuron58 min
Jun 19, 9:42 PM EDTSpecial Weather StatementDTXOakland63 min
Jun 19, 10:08 PM EDTSpecial Weather StatementDTXMacomb52 min
Jun 19, 10:11 PM EDTSpecial Marine WarningDTX59 min
Jun 19, 10:30 PM EDTSevere Thunderstorm WarningDTXMacomb, Saint Clair36 min
Jun 20, 1:26 AM EDTSpecial Weather StatementDTXWashtenaw34 min
Jun 20, 2:57 AM EDTSpecial Weather StatementDTXWayne33 min
Jun 20, 5:38 AM EDTSpecial Weather StatementDTXSaint Clair37 min
Jun 20, 1:28 PM EDTSpecial Weather StatementDTXOakland62 min
Jun 20, 2:00 PM EDTSpecial Weather StatementDTXMacomb60 min
Jun 20, 2:02 PM EDTAreal Flood AdvisoryDTXWayne5 hr
Jun 20, 2:30 PM EDTSevere Thunderstorm WarningDTXMacomb, Oakland60 min
Jun 20, 2:48 PM EDTAreal Flood AdvisoryDTXMacomb, Oakland3 hr
Jun 20, 3:02 PM EDTSpecial Weather StatementDTXMacomb58 min
Jun 20, 3:04 PM EDTSpecial Marine WarningDTX86 min
Jun 20, 3:15 PM EDTSevere Thunderstorm WarningDTXMacomb, Oakland, Wayne60 min
Jun 20, 3:28 PM EDTSpecial Weather StatementDTXMacomb62 min
Jun 20, 3:35 PM EDTAreal Flood AdvisoryDTXMacomb, Oakland3 hr
Jun 20, 3:49 PM EDTSpecial Weather StatementDTXWayne56 min
Jun 20, 4:05 PM EDTFlash Flood WarningDTXMacomb, Oakland, Wayne4 hr
Jun 20, 4:21 PM EDTSpecial Marine WarningDTX25 min
Jun 20, 4:31 PM EDTSpecial Weather StatementDTXWayne44 min
Jun 20, 4:49 PM EDTSpecial Weather StatementDTXWayne56 min
Jun 20, 5:15 PM EDTAreal Flood AdvisoryDTXWayne3 hr
Jun 20, 5:40 PM EDTSpecial Weather StatementDTXLivingston65 min
Jun 20, 5:51 PM EDTSpecial Weather StatementDTXMonroe39 min
Jun 20, 5:57 PM EDTSpecial Marine WarningDTX45 min
Jun 20, 6:11 PM EDTSevere Thunderstorm WarningDTXMonroe28 min
Jun 20, 6:17 PM EDTSpecial Weather StatementDTXWashtenaw58 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2024Every severe thunderstorm warning in 2024

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.