Alert archive / Michigan / Special Weather Statements in 2018

Special Weather Statement, NWS Detroit, MI

October 6, 2018Lapeer County, Livingston County, Oakland County, Michigan

NWS Detroit, MI issued this special weather statement at Oct 6, 2018, 9:24 AM EDT for Lapeer County, Livingston County, Oakland County, Michigan. It was in force for 66 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: Oct 6, 2018, 9:24 AM EDT (13:24 UTC)
Expired: Oct 6, 2018, 10:30 AM EDT
In force: 66 min
Issued by: NWS Detroit, MI

Counties Lapeer County, MI, Livingston County, MI, Oakland County, MI

The radar

The Detroit radar (KDTX), 8 km from the middle of the area, began a volume at 13:28 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, 1.4 hours before the alert went out and 5 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 964 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Oct 6, 6:57 AM EDT, 2 hours 27 minutes earlier.

Area forecast discussion, Oct 6, 6:57 AM EDT, 2 hours 27 minutes before

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Hazardous weather outlook, Oct 6, 3:49 AM EDT, 5 hours 35 minutes before

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In the hours before

Local storm report, Oct 6, 8:08 AM EDT, 1 hour 16 minutes before

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Special weather statement, Oct 6, 9:24 AM EDT, 0 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
Oct 6, 2:19 AM EDT	Special Weather Statement	DTX	Lenawee, Monroe, Washtenaw	56 min
Oct 6, 3:08 AM EDT	Special Weather Statement	DTX	Macomb, Oakland, Wayne	67 min
Oct 6, 10:47 AM EDT	Special Weather Statement	DTX	Lenawee, Monroe, Washtenaw	58 min
Oct 6, 11:44 AM EDT	Special Weather Statement	DTX	Monroe, Wayne	61 min
Oct 6, 3:39 PM EDT	Small Craft Advisory	DTX		24 hr
Oct 6, 5:30 PM EDT	Special Weather Statement	DTX	Lenawee	60 min
Oct 6, 6:04 PM EDT	Severe Thunderstorm Warning	DTX	Lenawee, Monroe	56 min
Oct 6, 6:39 PM EDT	Severe Thunderstorm Warning	DTX	Monroe, Wayne	27 min
Oct 6, 6:40 PM EDT	Special Marine Warning	DTX		30 min
Oct 6, 7:02 PM EDT	Areal Flood Advisory	DTX	Lenawee	3 hr

Nearby

Special Weather Statements in Michigan, 2018 Every special weather statement in 2018

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.