Alert archive / Arkansas / Mesoscale Discussions in 2019
Mesoscale Discussion 89
The Storm Prediction Center issued this mesoscale discussion at Feb 7, 2019, 7:11 AM CST for 6 states. It was in force for 64 min.
The area
The outline as issued.
The facts
- Issued
- Feb 7, 2019, 7:11 AM CST (13:11 UTC)
- Expired
- Feb 7, 2019, 8:15 AM CST
- In force
- 64 min
- Issued by
- the Storm Prediction Center
All 68 counties
Clay County, AR, Cleburne County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Greene County, AR, Independence County, AR, Jackson County, AR, Lawrence County, AR, Lee County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Sharp County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, Alexander County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, White County, IL, Williamson County, IL, Posey County, IN, Vanderburgh County, IN, Ballard County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Livingston County, KY, Marshall County, KY, McCracken County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, Dyer County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN
The radar
The Memphis radar (KNQA), 93 km from the middle of the area, began a volume at 13:12 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
Nashville Metro, TN (KBNA), launched 12:00Z, 1.2 hours before the alert went out and 327 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
- 206 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 689 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 352 m²/s²
- 0-3 km storm-relative helicity
- 351 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.6
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 |
|---|---|---|---|---|
| Feb 7, 1:55 AM CST | Mesoscale Discussion | SPC | Baxter, Crawford, Franklin, Izard, Johnson, Logan and 9 more | 65 min |
| Feb 7, 2:21 AM CST | Severe Thunderstorm Watch | SPC | Baxter, Boone, Carroll, Cleburne, Conway, Crawford and 20 more | 6 hr |
| Feb 7, 3:36 AM CST | Mesoscale Discussion | SPC | Howard, Little River, Montgomery, Pike, Polk, Sevier | 54 min |
| Feb 7, 5:23 AM CST | Mesoscale Discussion | SPC | Baxter, Clay, Cleburne, Conway, Franklin, Fulton and 18 more | 67 min |
| Feb 7, 6:26 AM CST | Mesoscale Discussion | SPC | Carroll, Henry, Jo Daviess, Mercer, Ogle, Rock Island and 3 more | 4 hr |
| Feb 7, 9:26 AM CST | Mesoscale Discussion | SPC | Alexander, Edwards, Gallatin, Hamilton, Hardin, Johnson and 7 more | 94 min |
| Feb 6, 7:51 PM CST | Mesoscale Discussion | SPC | Bates, Buchanan, Cass, Clay, Clinton, Henry and 8 more | 6 hr |
| Feb 6, 9:06 PM CST | Mesoscale Discussion | SPC | Barry, Barton, Cedar, Dade, Greene, Jasper and 6 more | 114 min |
| Feb 6, 9:33 PM CST | Mesoscale Discussion | SPC | Adair, Andrew, Atchison, Boone, Carroll, Chariton and 26 more | 6 hr |
| Feb 6, 11:33 PM CST | Mesoscale Discussion | SPC | Barry, Christian, Douglas, Greene, Howell, Lawrence and 5 more | 87 min |
| Feb 7, 12:50 AM CST | Mesoscale Discussion | SPC | Carter, Dent, Douglas, Howell, Reynolds, Shannon and 1 more | 55 min |
Nearby
Mesoscale Discussions in Arkansas, 2019Mesoscale Discussions in Illinois, 2019Mesoscale Discussions in Kentucky, 2019Every mesoscale discussion in 2019
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.