Alert archive / Ohio / Frost Advisories in 2009

Frost Advisory 8, NWS Wilmington, OH

October 10, 2009Auglaize County, Darke County, Mercer County, Ohio; Wayne County, Indiana

NWS Wilmington, OH issued this frost advisory at Oct 10, 2009, 3:45 PM EDT for Auglaize County, Darke County, Mercer County, Ohio; Wayne County, Indiana. It took effect at Oct 11, 2009, 4:00 AM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Oct 10, 2009, 3:45 PM EDT (19:45 UTC)
In effect from: Oct 11, 2009, 4:00 AM EDT
Expired: Oct 11, 2009, 8:53 AM EDT
In force: 5 hr
Issued by: NWS Wilmington, OH

Counties Wayne County, IN, Auglaize County, OH, Darke County, OH, Mercer County, OH

The radar

The Cincinnati radar (KILN), 117 km from the middle of the area, began a volume at 19:46 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

Lincoln, IL (KILX), launched 12:00Z, 7.8 hours before the alert went out and 338 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: 1079 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: -74 m²/s²
0-3 km storm-relative helicity: -12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Wilmington, OH wrote its last area forecast discussion before this frost advisory went out at Oct 9, 5:56 PM EDT, 21 hours 49 minutes earlier.

Area forecast discussion, Oct 9, 5:56 PM EDT, 21 hours 49 minutes before

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Nearby

Frost Advisories in Ohio, 2009 Frost Advisories in Indiana, 2009 Every 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.