Alert archive / Kentucky / Mesoscale Discussions in 2008

Mesoscale Discussion 36

January 8, 200820 counties in Indiana; 27 counties in Kentucky; 18 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jan 8, 2008, 9:01 PM EST for 20 counties in Indiana; 27 counties in Kentucky; 18 counties in Ohio. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
Jan 8, 2008, 9:01 PM EST (02:01 UTC)
Expired
Jan 8, 2008, 10:30 PM EST
In force
89 min
Issued by
the Storm Prediction Center
All 65 counties

Clark County, IN, Crawford County, IN, Dearborn County, IN, Decatur County, IN, Fayette County, IN, Floyd County, IN, Franklin County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Ohio County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Switzerland County, IN, Union County, IN, Washington County, IN, Wayne County, IN, Anderson County, KY, Boone County, KY, Bracken County, KY, Breckinridge County, KY, Bullitt County, KY, Campbell County, KY, Carroll County, KY, Franklin County, KY, Gallatin County, KY, Grant County, KY, Hardin County, KY, Harrison County, KY, Henry County, KY, Jefferson County, KY, Kenton County, KY, Meade County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Trimble County, KY, Washington County, KY, Woodford County, KY, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Fayette County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Madison County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Shelby County, OH, Union County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 82 km from the middle of the area, began a volume at 02:03 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.0 hours before the alert went out and 85 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, Cncnati-Daytn, OH at 00:00Z on 2008-01-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 63 joules per kilogram.LCLLFCEL10008507005003002001001 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, Cncnati-Daytn, OH at 00:00Z on 2008-01-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 428 square meters per square second.1939587897Sfc1 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
63 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1018 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
428 m²/s²
0-3 km storm-relative helicity
454 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 8, 10:07 PM ESTTornado WatchSPCDearborn, Franklin, Jefferson, Ohio, Ripley, Switzerland and 1 more4 hr
Jan 9, 12:26 AM ESTMesoscale DiscussionSPCBoyd, Carter, Fleming, Greenup, Lewis, Rowan94 min
Jan 9, 12:53 AM ESTSevere Thunderstorm WatchSPCBoyd, Carter, Greenup, Lawrence3 hr
Jan 8, 11:30 PM ESTMesoscale DiscussionSPCAshland, Crawford, Erie, Holmes, Huron, Medina and 8 more60 min

Nearby

Mesoscale Discussions in Kentucky, 2008Mesoscale Discussions in Indiana, 2008Mesoscale Discussions in Ohio, 2008Every mesoscale discussion in 2008

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.