Alert archive / Arkansas / Severe Thunderstorm Watches in 2019
Severe Thunderstorm Watch 4
The Storm Prediction Center issued this severe thunderstorm watch at Feb 7, 2019, 2:21 AM CST for 26 counties in Arkansas; 4 counties in Missouri; 8 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 7, 2019, 2:21 AM CST (08:21 UTC)
- Expired
- Feb 7, 2019, 8:00 AM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
All 38 counties
Baxter County, AR, Boone County, AR, Carroll County, AR, Cleburne County, AR, Conway County, AR, Crawford County, AR, Franklin County, AR, Fulton County, AR, Independence County, AR, Izard County, AR, Johnson County, AR, Lawrence County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Pope County, AR, Randolph County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, Yell County, AR, Howell County, MO, Oregon County, MO, Ozark County, MO, Shannon County, MO, Adair County, OK, Choctaw County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 95 km from the middle of the area, began a volume at 08:22 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 7, 2:29 AM CST | Severe Thunderstorm Warning | TSA | Benton, Crawford, Franklin, Madison, Sebastian, Washington | 46 min |
| Feb 7, 3:07 AM CST | Severe Thunderstorm Warning | LZK | Boone, Johnson, Newton | 53 min |
| Feb 7, 3:13 AM CST | Severe Thunderstorm Warning | TSA | Benton, Carroll, Franklin, Madison | 32 min |
| Feb 7, 3:58 AM CST | Severe Thunderstorm Warning | LZK | Baxter, Boone, Marion, Newton, Searcy | 47 min |
| Feb 7, 4:23 AM CST | Tornado Warning | LZK | Baxter, Marion, Searcy | 24 min |
| Feb 7, 4:48 AM CST | Severe Thunderstorm Warning | LZK | Baxter, Fulton | 27 min |
| Feb 7, 5:13 AM CST | Severe Thunderstorm Warning | SGF | Howell, Oregon | 17 min |
| Feb 7, 5:37 AM CST | Severe Thunderstorm Warning | SGF | Oregon, Shannon | 23 min |
| Feb 7, 6:05 AM CST | Severe Thunderstorm Warning | LZK | Johnson, Logan, Pope, Yell | 45 min |
| Feb 7, 6:32 AM CST | Severe Thunderstorm Warning | LZK | Conway, Pope, Searcy, Van Buren | 43 min |
| Feb 7, 7:01 AM CST | Severe Thunderstorm Warning | LZK | Cleburne, Conway, Independence, Izard, Searcy, Stone and 1 more | 44 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 8.4 hours before the alert went out and 122 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
- 425 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 399 m²/s²
- 0-3 km storm-relative helicity
- 372 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, 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, 7:11 AM CST | Mesoscale Discussion | SPC | Clay, Cleburne, Craighead, Crittenden, Cross, Faulkner and 16 more | 64 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 |
| Feb 7, 9:26 AM CST | Mesoscale Discussion | SPC | Mississippi, New Madrid, Pemiscot | 94 min |
| Feb 6, 10:16 PM CST | Mesoscale Discussion | SPC | Caddo, Canadian, Carter, Cleveland, Comanche, Cotton and 15 more | 119 min |
Nearby
Severe Thunderstorm Watches in Arkansas, 2019Severe Thunderstorm Watches in Oklahoma, 2019Severe Thunderstorm Watches in Missouri, 2019Every severe thunderstorm watch 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.