Alert archive / Arkansas / Mesoscale Discussions in 2022
Mesoscale Discussion 166
The Storm Prediction Center issued this mesoscale discussion at Feb 22, 2022, 3:00 AM CST for 5 states. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Feb 22, 2022, 3:00 AM CST (09:00 UTC)
- Expired
- Feb 22, 2022, 4:30 AM CST
- In force
- 90 min
- Issued by
- the Storm Prediction Center
- Concerning
- Tornado watch 24
All 71 counties
Baxter County, AR, Clay County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Cross County, AR, Faulkner County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Lawrence County, AR, Lonoke County, AR, Marion County, AR, Mississippi County, AR, Perry County, AR, Poinsett County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Alexander County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian 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, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Pemiscot County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, Crockett County, TN, Dyer County, TN, Gibson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Stewart County, TN, Weakley County, TN
The radar
The Memphis radar (KNQA), 113 km from the middle of the area, began a volume at 09:01 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 00:00Z, 9.0 hours before the alert went out and 157 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
- 764 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 446 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 445 m²/s²
- 0-3 km storm-relative helicity
- 549 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 12.0
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 |
|---|---|---|---|---|
| Feb 21, 6:41 PM CST | Mesoscale Discussion | SPC | Benton, Crawford, Franklin, Johnson, Madison, Sebastian and 1 more | 3 hr |
| Feb 21, 8:49 PM CST | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 32 more | 7 hr |
| Feb 21, 11:37 PM CST | Mesoscale Discussion | SPC | Conway, Franklin, Garland, Hot Spring, Howard, Johnson and 11 more | 113 min |
| Feb 22, 1:36 AM CST | Mesoscale Discussion | SPC | Cleburne, Conway, Faulkner, Franklin, Garland, Johnson and 13 more | 84 min |
| Feb 22, 3:52 AM CST | Tornado Watch | SPC | Clay, Cleburne, Craighead, Crittenden, Cross, Faulkner and 19 more | 6 hr |
| Feb 22, 5:46 AM CST | Mesoscale Discussion | SPC | Craighead, Crittenden, Cross, Lonoke, Mississippi, Monroe and 7 more | 89 min |
| Feb 22, 7:30 AM CST | Mesoscale Discussion | SPC | Crittenden, Cross, Lee, Monroe, St. Francis | 90 min |
| Feb 22, 9:26 AM CST | Mesoscale Discussion | SPC | Allen, Barren, Clinton, Cumberland, Metcalfe, Monroe and 2 more | 2 hr |
| Feb 22, 3:03 PM CST | Mesoscale Discussion | SPC | Chester, Decatur, Hardeman, Hardin, Lewis, McNairy and 2 more | 117 min |
Nearby
Mesoscale Discussions in Arkansas, 2022Mesoscale Discussions in Kentucky, 2022Mesoscale Discussions in Missouri, 2022Every mesoscale discussion in 2022
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.