Alert archive / Indiana / Mesoscale Discussions in 2020

Mesoscale Discussion 208

March 19, 20209 counties in Indiana

The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2020, 6:16 PM EDT for 9 counties in Indiana. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
Mar 19, 2020, 6:16 PM EDT (22:16 UTC)
Expired
Mar 19, 2020, 7:45 PM EDT
In force
89 min
Issued by
the Storm Prediction Center

Counties Daviess County, IN, Dubois County, IN, Gibson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Orange County, IN, Pike County, IN, Posey County, IN

The radar

The Evansville,IN radar (KVWX), 61 km from the middle of the area, began a volume at 22:17 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, 10.3 hours before the alert went out and 212 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, Lincoln, IL at 12:00Z on 2020-03-19Temperature 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, Lincoln, IL at 12:00Z on 2020-03-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
538 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
240 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 19, 4:40 PM EDTMesoscale DiscussionSPCClark, Crawford, Daviess, Dearborn, Dubois, Floyd and 20 more65 min
Mar 19, 5:06 PM EDTTornado WatchSPCClark, Crawford, Dubois, Floyd, Gibson, Harrison and 10 more7 hr

Nearby

Mesoscale Discussions in Indiana, 2020Every mesoscale discussion in 2020

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.