Alert archive / Michigan / Frost Advisories in 2012
Frost Advisory 1, NWS Marquette, MI
NWS Marquette, MI issued this frost advisory at May 16, 2012, 3:41 PM EDT for 4 counties in Michigan. It took effect at May 17, 2012, 12:00 AM EDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- May 16, 2012, 3:41 PM EDT (19:41 UTC)
- In effect from
- May 17, 2012, 12:00 AM EDT
- Expired
- May 17, 2012, 8:00 AM EDT
- In force
- 8 hr
- Issued by
- NWS Marquette, MI
Counties Alger County, MI, Delta County, MI, Luce County, MI, Schoolcraft County, MI
The radar
The Marquette radar (KMQT), 106 km from the middle of the area, began a volume at 19:39 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
Alpena, MI (KAPX), launched 12:00Z, 7.7 hours before the alert went out and 325 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
- 1026 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -274 m²/s²
- 0-3 km storm-relative helicity
- -221 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 Marquette, MI wrote its last area forecast discussion before this frost advisory went out at May 15, 7:40 PM EDT, 20 hours 1 minute earlier.
Area forecast discussion, May 15, 7:40 PM EDT, 20 hours 1 minute before
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</html>Hazardous weather outlook, May 15, 4:17 PM EDT, 23 hours 24 minutes before
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</html>Nearby
Frost Advisories in Michigan, 2012Every frost advisory in 2012
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.