Alert archive / Arkansas / Mesoscale Discussions in 2019
Mesoscale Discussion 2157
The Storm Prediction Center issued this mesoscale discussion at Nov 26, 2019, 4:27 PM CST for 31 counties in Arkansas; 11 counties in Missouri. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- Nov 26, 2019, 4:27 PM CST (22:27 UTC)
- Expired
- Nov 26, 2019, 5:30 PM CST
- In force
- 63 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 42 counties
Arkansas County, AR, 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, Monroe 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, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Bollinger County, MO, Butler County, MO, Carter County, MO, Dunklin County, MO, Howell County, MO, Oregon County, MO, Reynolds County, MO, Ripley County, MO, Shannon County, MO, Stoddard County, MO, Wayne County, MO
The radar
The Little Rock radar (KLZK), 104 km from the middle of the area, began a volume at 22:30 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, 10.5 hours before the alert went out and 183 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 689 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 256 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Nov 26, 3:04 PM CST | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 26 more | 116 min |
| Nov 26, 3:42 PM CST | Tornado Watch | SPC | Ashley, Bradley, Calhoun, Chicot, Cleveland, Desha and 3 more | 6 hr |
| Nov 26, 4:41 PM CST | Tornado Watch | SPC | Arkansas, Baxter, Clay, Cleburne, Conway, Craighead and 29 more | 5 hr |
Nearby
Mesoscale Discussions in Arkansas, 2019Mesoscale Discussions in Missouri, 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.