Alert archive / Missouri / Mesoscale Discussions in 2020
Mesoscale Discussion 239
The Storm Prediction Center issued this mesoscale discussion at Mar 27, 2020, 5:15 PM CDT for Monroe County, Randolph County, Illinois; 28 counties in Missouri. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Mar 27, 2020, 5:15 PM CDT (22:15 UTC)
- Expired
- Mar 27, 2020, 6:45 PM CDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 30 counties
Monroe County, IL, Randolph County, IL, Barry County, MO, Christian County, MO, City of Saint Louis, MO, Crawford County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Greene County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Lawrence County, MO, Madison County, MO, Maries County, MO, Perry County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Shannon County, MO, Stone County, MO, Texas County, MO, Washington County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 130 km from the middle of the area, began a volume at 22:15 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, 10.3 hours before the alert went out and 176 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
- 1014 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 754 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 292 m²/s²
- 0-3 km storm-relative helicity
- 325 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 26, 9:51 PM CDT | Mesoscale Discussion | SPC | Calhoun, Greene, Jersey, Macoupin, Madison, Monroe and 5 more | 84 min |
| Mar 26, 10:27 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more | 7 hr |
| Mar 27, 1:20 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Jersey, Madison, Monroe, Saint Clair | 85 min |
| Mar 27, 3:43 AM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Crawford, Edwards, Effingham and 10 more | 92 min |
| Mar 27, 5:46 PM CDT | Severe Thunderstorm Watch | SPC | Randolph | 3 hr |
| Mar 27, 3:45 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Camden, Cedar, Christian, Dade and 24 more | 2 hr |
| Mar 27, 4:06 PM CDT | Severe Thunderstorm Watch | SPC | Barry, Camden, Christian, Dade, Dallas, Dent and 19 more | 5 hr |
Nearby
Mesoscale Discussions in Missouri, 2020Mesoscale Discussions in Illinois, 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.