Alert archive / Michigan / Frost Advisories in 2018
Frost Advisory 1, NWS Detroit, MI
NWS Detroit, MI issued this frost advisory at Oct 12, 2018, 3:40 PM EDT for 17 counties in Michigan. It took effect at Oct 13, 2018, 2:00 AM EDT. It was in force for 117 min.
The area
The counties it named.
The facts
- Issued
- Oct 12, 2018, 3:40 PM EDT (19:40 UTC)
- In effect from
- Oct 13, 2018, 2:00 AM EDT
- Expired
- Oct 13, 2018, 3:57 AM EDT
- In force
- 117 min
- Issued by
- NWS Detroit, MI
Counties Bay County, MI, Genesee County, MI, Huron County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Midland County, MI, Monroe County, MI, Oakland County, MI, Saginaw County, MI, Saint Clair County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Wayne County, MI
The radar
The Detroit radar (KDTX), 26 km from the middle of the area, began a volume at 19:42 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
Detroit, MI (KDTX), launched 12:00Z, 7.7 hours before the alert went out and 25 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
- 835 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -66 m²/s²
- 0-3 km storm-relative helicity
- -12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this frost advisory 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 frost advisory went out at Oct 12, 2:24 PM EDT, 1 hour 16 minutes earlier.
Area forecast discussion, Oct 12, 2:24 PM EDT, 1 hour 16 minutes before
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</html>Hazardous weather outlook, Oct 12, 4:18 AM EDT, 11 hours 22 minutes before
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</html>Nearby
Frost Advisories in Michigan, 2018Every frost advisory 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.