Alert archive / Michigan / Frost Advisories in 2009

Frost Advisory 2, NWS Marquette, MI

May 30, 2009Menominee County, Michigan

NWS Marquette, MI issued this frost advisory at May 30, 2009, 3:26 PM CDT for Menominee County, Michigan. It took effect at May 31, 2009, 12:00 AM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
May 30, 2009, 3:26 PM CDT (20:26 UTC)
In effect from
May 31, 2009, 12:00 AM CDT
Expired
May 31, 2009, 6:00 AM CDT
In force
6 hr
Issued by
NWS Marquette, MI

County Menominee County, MI

The radar

The Marquette radar (KMQT), 112 km from the middle of the area, began a volume at 20:30 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, 8.4 hours before the alert went out and 403 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-pSkew-T log-p diagram, Alpena, MI at 12:00Z on 2009-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Alpena, MI at 12:00Z on 2009-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1009 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 2:59 AM CDTFreeze WatchMQTAlger, Delta, Keweenaw, Luce, Menominee, Schoolcraft12 hr
May 30, 2:59 AM CDTFreeze WarningMQTAlger, Baraga, Delta, Dickinson, Gogebic, Houghton and 5 more27 hr

Nearby

Frost Advisories in Michigan, 2009Every frost advisory in 2009

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.