Alert archive / Indiana / Mesoscale Discussions in 2014

Mesoscale Discussion 1826

October 7, 201423 counties in Indiana; 4 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Oct 7, 2014, 4:25 PM EDT for 23 counties in Indiana; 4 counties in Ohio. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Oct 7, 2014, 4:25 PM EDT (20:25 UTC)
Expired
Oct 7, 2014, 6:30 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
5%
All 27 counties

Adams County, IN, Allen County, IN, Blackford County, IN, DeKalb County, IN, Delaware County, IN, Grant County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jay County, IN, Kosciusko County, IN, Madison County, IN, Marion County, IN, Miami County, IN, Noble County, IN, Randolph County, IN, Tipton County, IN, Wabash County, IN, Wells County, IN, Whitley County, IN, Defiance County, OH, Mercer County, OH, Paulding County, OH, Van Wert County, OH

The radar

The Indianapolis radar (KIND), 100 km from the middle of the area, began a volume at 20:24 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.4 hours before the alert went out and 181 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 12:00Z on 2014-10-07Temperature 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, Cncnati-Daytn, OH at 12:00Z on 2014-10-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 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
1440 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
269 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Oct 7, 1:20 PM EDTMesoscale DiscussionSPCClark, Dearborn, Floyd, Harrison, Jackson, Jefferson and 6 more115 min
Oct 7, 2:02 PM EDTTornado WatchSPCClark, Crawford, Dearborn, Floyd, Franklin, Harrison and 7 more9 hr
Oct 7, 2:44 PM EDTMesoscale DiscussionSPCBenton, Carroll, Cass, Clay, Clinton, Fountain and 13 more2 hr
Oct 7, 4:54 PM EDTMesoscale DiscussionSPCClark, Crawford, Dearborn, Floyd, Harrison, Jefferson and 6 more96 min
Oct 7, 7:59 PM EDTMesoscale DiscussionSPCClark, Floyd, Harrison61 min

Nearby

Mesoscale Discussions in Indiana, 2014Mesoscale Discussions in Ohio, 2014Every mesoscale discussion in 2014

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.