Alert archive / Missouri / Mesoscale Discussions in 2015
Mesoscale Discussion 1496
The Storm Prediction Center issued this mesoscale discussion at Jul 20, 2015, 3:50 PM CDT for 48 counties in Missouri. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- Jul 20, 2015, 3:50 PM CDT (20:50 UTC)
- Expired
- Jul 20, 2015, 5:45 PM CDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 48 counties
Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Bollinger County, MO, Butler County, MO, Camden County, MO, Cape Girardeau County, MO, Carter County, MO, Cass County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howell County, MO, Iron County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Madison County, MO, McDonald County, MO, Miller County, MO, Morgan County, MO, New Madrid County, MO, Newton County, MO, Oregon County, MO, Ozark County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Ripley County, MO, Scott County, MO, Shannon County, MO, St. Clair County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Wayne County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 87 km from the middle of the area, began a volume at 20:51 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
Springfield, MO (KSGF), launched 12:00Z, 8.8 hours before the alert went out and 132 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.
- Mixed-layer CAPE
- 868 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 1243 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 7:47 PM CDT | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Crawford, Dent, Franklin, Gasconade and 15 more | 118 min |
| Jul 20, 6:23 PM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Howell, Madison and 11 more | 97 min |
| Jul 20, 6:42 PM CDT | Severe Thunderstorm Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Iron and 10 more | 5 hr |
Nearby
Mesoscale Discussions in Missouri, 2015Every mesoscale discussion in 2015
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.