Alert archive / Michigan / Flash Flood Warnings in 2024

Flash Flood Warning 1, NWS Detroit, MI

June 20, 2024Macomb County, Oakland County, Wayne County, Michigan

NWS Detroit, MI issued this flash flood warning at Jun 20, 2024, 4:05 PM EDT for Macomb County, Oakland County, Wayne County, Michigan. It was in force for 4 hr. 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, 4:05 PM EDT (20:05 UTC)
Expired: Jun 20, 2024, 8:15 PM EDT
In force: 4 hr
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Flood severity: None

Counties Macomb County, MI, Oakland County, MI, Wayne County, MI

The radar

The Detroit radar (KDTX), 29 km from the middle of the area, began a volume at 20:05 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 28 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 flash flood 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 flash flood warning went out at Jun 20, 3:53 PM EDT, 12 minutes earlier.

Area forecast discussion, Jun 20, 3:53 PM EDT, 12 minutes before

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Hazardous weather outlook, Jun 20, 4:01 PM EDT, 4 minutes before

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In the hours before

Special weather statement, Jun 20, 2:33 PM EDT, 1 hour 32 minutes before

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Special weather statement, Jun 20, 3:02 PM EDT, 1 hour 3 minutes before

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Special weather statement, Jun 20, 3:28 PM EDT, 37 minutes before

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Local storm report, Jun 20, 3:39 PM EDT, 26 minutes before

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Special weather statement, Jun 20, 3:49 PM EDT, 16 minutes before

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Local storm report, Jun 20, 3:56 PM EDT, 9 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 8:00 PM EDT	Special Weather Statement	DTX	Washtenaw	60 min
Jun 19, 8:26 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Saint Clair	64 min
Jun 19, 8:31 PM EDT	Areal Flood Advisory	DTX	Macomb, Saint Clair	4 hr
Jun 19, 8:34 PM EDT	Special Weather Statement	DTX	Washtenaw	56 min
Jun 19, 8:42 PM EDT	Severe Thunderstorm Warning	DTX	Washtenaw	47 min
Jun 19, 9:02 PM EDT	Severe Thunderstorm Warning	DTX	Oakland, Wayne	45 min
Jun 19, 9:32 PM EDT	Special Weather Statement	DTX	Huron	58 min
Jun 19, 9:42 PM EDT	Special Weather Statement	DTX	Oakland	63 min
Jun 19, 10:08 PM EDT	Special Weather Statement	DTX	Macomb	52 min
Jun 19, 10:11 PM EDT	Special Marine Warning	DTX		59 min
Jun 19, 10:30 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Saint Clair	36 min
Jun 20, 1:26 AM EDT	Special Weather Statement	DTX	Washtenaw	34 min
Jun 20, 2:57 AM EDT	Special Weather Statement	DTX	Wayne	33 min
Jun 20, 5:38 AM EDT	Special Weather Statement	DTX	Saint Clair	37 min
Jun 20, 1:28 PM EDT	Special Weather Statement	DTX	Oakland	62 min
Jun 20, 2:00 PM EDT	Special Weather Statement	DTX	Macomb	60 min
Jun 20, 2:02 PM EDT	Areal Flood Advisory	DTX	Wayne	5 hr
Jun 20, 2:30 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Oakland	60 min
Jun 20, 2:48 PM EDT	Areal Flood Advisory	DTX	Macomb, Oakland	3 hr
Jun 20, 3:02 PM EDT	Special Weather Statement	DTX	Macomb	58 min
Jun 20, 3:04 PM EDT	Special Marine Warning	DTX		86 min
Jun 20, 3:15 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Oakland, Wayne	60 min
Jun 20, 3:28 PM EDT	Special Weather Statement	DTX	Macomb	62 min
Jun 20, 3:35 PM EDT	Areal Flood Advisory	DTX	Macomb, Oakland	3 hr
Jun 20, 3:49 PM EDT	Special Weather Statement	DTX	Wayne	56 min
Jun 20, 3:58 PM EDT	Severe Thunderstorm Warning	DTX	Wayne	35 min
Jun 20, 4:21 PM EDT	Special Marine Warning	DTX		25 min
Jun 20, 4:31 PM EDT	Special Weather Statement	DTX	Wayne	44 min
Jun 20, 4:49 PM EDT	Special Weather Statement	DTX	Wayne	56 min
Jun 20, 5:15 PM EDT	Areal Flood Advisory	DTX	Wayne	3 hr
Jun 20, 5:40 PM EDT	Special Weather Statement	DTX	Livingston	65 min
Jun 20, 5:51 PM EDT	Special Weather Statement	DTX	Monroe	39 min
Jun 20, 5:57 PM EDT	Special Marine Warning	DTX		45 min
Jun 20, 6:11 PM EDT	Severe Thunderstorm Warning	DTX	Monroe	28 min
Jun 20, 6:17 PM EDT	Special Weather Statement	DTX	Washtenaw	58 min

Nearby

Flash Flood Warnings in Michigan, 2024 Every flash flood 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.