Alert archive / Michigan / Winter Storm Warnings in 2018
Winter Storm Warning 4, NWS Detroit, MI
NWS Detroit, MI issued this winter storm warning at Mar 1, 2018, 3:40 AM EST for 6 counties in Michigan. It took effect at Mar 1, 2018, 10:00 AM EST. It was in force for 13 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
- Mar 1, 2018, 3:40 AM EST (08:40 UTC)
- In effect from
- Mar 1, 2018, 10:00 AM EST
- Expired
- Mar 1, 2018, 11:27 PM EST
- In force
- 13 hr
- Issued by
- NWS Detroit, MI
Counties Livingston County, MI, Macomb County, MI, Oakland County, MI, Saint Clair County, MI, Washtenaw County, MI, Wayne County, MI
The radar
The Detroit radar (KDTX), 19 km from the middle of the area, began a volume at 08:42 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
Cncnati-Daytn, OH (KILN), launched 00:00Z, 8.7 hours before the alert went out and 351 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 547 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm 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 winter storm warning went out at Feb 28, 11:49 PM EST, 3 hours 51 minutes earlier.
Area forecast discussion, Feb 28, 11:49 PM EST, 3 hours 51 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 |
|---|---|---|---|---|
| Mar 1, 3:40 AM EST | Winter Weather Advisory | DTX | Genesee, Lapeer, Lenawee, Macomb, Monroe, Saginaw and 6 more | 20 hr |
| Mar 1, 3:42 AM EST | Gale Warning | DTX | 24 hr | |
| Mar 1, 3:42 AM EST | Small Craft Advisory | DTX | 60 hr | |
| Mar 1, 11:37 AM EST | Lakeshore Flood Advisory | DTX | Monroe | 4 hr |
Nearby
Winter Storm Warnings in Michigan, 2018Every winter storm warning 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.