Alert archive / Arkansas / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 367
The Storm Prediction Center issued this severe thunderstorm watch at Jun 23, 2017, 2:04 PM CDT for 57 counties in Arkansas; 15 counties in Mississippi. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2017, 2:04 PM CDT (19:04 UTC)
- Expired
- Jun 23, 2017, 8:27 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 72 counties
Arkansas County, AR, Baxter County, AR, Boone County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Clay County, AR, Cleburne County, AR, Cleveland County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Greene County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Logan County, AR, Lonoke County, AR, Marion County, AR, Mississippi County, AR, Monroe County, AR, Montgomery County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Poinsett County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Scott 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, Benton County, MS, Calhoun County, MS, Coahoma County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Pontotoc County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS
The radar
The Little Rock radar (KLZK), 78 km from the middle of the area, began a volume at 19:04 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
27 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 2:11 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Fulton, Izard | 49 min |
| Jun 23, 2:16 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Izard, Marion | 29 min |
| Jun 23, 2:23 PM CDT | Severe Thunderstorm Warning | LZK | Newton | 37 min |
| Jun 23, 2:24 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Marion, Searcy | 36 min |
| Jun 23, 2:41 PM CDT | Severe Thunderstorm Warning | LZK | Independence, Izard, Sharp, Stone | 49 min |
| Jun 23, 2:50 PM CDT | Severe Thunderstorm Warning | LZK | Johnson, Newton, Pope | 40 min |
| Jun 23, 3:00 PM CDT | Severe Thunderstorm Warning | LZK | Fulton, Sharp | 45 min |
| Jun 23, 3:14 PM CDT | Severe Thunderstorm Warning | MEG | Lawrence, Randolph | 61 min |
| Jun 23, 3:17 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Independence, Jackson, Stone, White | 43 min |
| Jun 23, 3:22 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Conway, Faulkner, Van Buren, White | 38 min |
| Jun 23, 3:31 PM CDT | Severe Thunderstorm Warning | LZK | Independence, Jackson, Sharp | 29 min |
| Jun 23, 3:33 PM CDT | Severe Thunderstorm Warning | LZK | Johnson | 27 min |
| Jun 23, 3:34 PM CDT | Severe Thunderstorm Warning | MEG | Randolph | 41 min |
| Jun 23, 4:08 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Greene, Lawrence, Randolph | 52 min |
| Jun 23, 4:37 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Poinsett | 38 min |
| Jun 23, 4:39 PM CDT | Severe Thunderstorm Warning | LZK | Faulkner, Perry, Pulaski, Saline | 51 min |
| Jun 23, 4:42 PM CDT | Flash Flood Warning | MEG | Lawrence, Randolph | 3 hr |
| Jun 23, 4:51 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Crittenden, Cross, Mississippi, Poinsett | 39 min |
| Jun 23, 4:54 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Greene, Mississippi | 34 min |
| Jun 23, 5:04 PM CDT | Severe Thunderstorm Warning | LZK | Garland, Hot Spring, Saline | 41 min |
| Jun 23, 5:04 PM CDT | Severe Thunderstorm Warning | LZK | Logan, Scott | 26 min |
| Jun 23, 5:20 PM CDT | Flash Flood Warning | MEG | Craighead, Greene | 3 hr |
| Jun 23, 5:21 PM CDT | Severe Thunderstorm Warning | MEG | Crittenden, Mississippi | 54 min |
| Jun 23, 5:26 PM CDT | Severe Thunderstorm Warning | LZK | Grant, Saline | 37 min |
| Jun 23, 5:48 PM CDT | Severe Thunderstorm Warning | LZK | Scott | 27 min |
| Jun 23, 6:43 PM CDT | Flash Flood Warning | LZK | Garland, Grant, Hot Spring | 3 hr |
| Jun 23, 7:17 PM CDT | Severe Thunderstorm Warning | LZK | Montgomery, Pike | 25 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 12:00Z, 7.1 hours before the alert went out and 208 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
- 1414 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 794 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
455 WWUS20 KWNS 231901 SEL7 SPC WW 231901 ARZ000-MOZ000-240200- URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 367 NWS Storm Prediction Center Norman OK 205 PM CDT Fri Jun 23 2017 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Arkansas Far southern Missouri * Effective this Friday afternoon and evening from 205 PM until 900 PM CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...A cluster of storms will continue to move southeastward across the region into an increasing warm and unstable air mass this afternoon. Bouts of damaging winds will the most common hazard aside from some hail. The severe thunderstorm watch area is approximately along and 75 statute miles north and south of a line from 30 miles west southwest of Russellville AR to 30 miles east southeast of Jonesboro AR. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 365...WW 366... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 31035. ...Guyer
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 8:57 PM CDT | Mesoscale Discussion | SPC | Chicot | 63 min |
| Jun 23, 12:22 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Clark, Cleburne and 37 more | 2 hr |
| Jun 23, 3:32 PM CDT | Mesoscale Discussion | SPC | Crawford, Sebastian | 118 min |
| Jun 23, 4:35 PM CDT | Mesoscale Discussion | SPC | Arkansas, Conway, Craighead, Crittenden, Cross, Faulkner and 20 more | 85 min |
| Jun 23, 10:54 AM CDT | Mesoscale Discussion | SPC | Chickasaw, Choctaw, Clay, Itawamba, Kemper, Leake and 9 more | 96 min |
| Jun 23, 12:16 PM CDT | Tornado Watch | SPC | Lowndes, Noxubee, Oktibbeha, Winston | 6 hr |
| Jun 23, 3:17 PM CDT | Mesoscale Discussion | SPC | Lauderdale | 118 min |
Nearby
Severe Thunderstorm Watches in Arkansas, 2017Severe Thunderstorm Watches in Mississippi, 2017Every severe thunderstorm watch in 2017
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.