Alert archive / Missouri / Mesoscale Discussions in 2020
Mesoscale Discussion 135
The Storm Prediction Center issued this mesoscale discussion at Mar 2, 2020, 3:54 PM CST for 5 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 2, 2020, 3:54 PM CST (21:54 UTC)
- Expired
- Mar 2, 2020, 6:00 PM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 50 counties
Baxter County, AR, Clay County, AR, Fulton County, AR, Greene County, AR, Izard County, AR, Lawrence County, AR, Marion County, AR, Randolph County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Alexander County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Union County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Trigg County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dunklin County, MO, Howell County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Ozark County, MO, Pemiscot County, MO, Reynolds County, MO, Ripley County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Wayne County, MO, Lake County, TN, Obion County, TN
The radar
The Paducah radar (KPAH), 141 km from the middle of the area, began a volume at 21:55 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
Little Rock, AR (KLZK), launched 12:00Z, 9.9 hours before the alert went out and 235 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
- 334 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 668 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 185 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 3.0
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 2, 5:21 PM CST | Tornado Watch | SPC | Baxter, Boone, Clay, Cleburne, Craighead, Fulton and 14 more | 8 hr |
| Mar 1, 10:16 PM CST | Mesoscale Discussion | SPC | Barry, Christian, Dade, Dallas, Dent, Douglas and 15 more | 2 hr |
Nearby
Mesoscale Discussions in Missouri, 2020Mesoscale Discussions in Kentucky, 2020Mesoscale Discussions in Arkansas, 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.