Alert archive / Arkansas / Severe Thunderstorm Watches in 2011
Severe Thunderstorm Watch 569
The Storm Prediction Center issued this severe thunderstorm watch at Jun 28, 2011, 7:06 AM CDT for 28 counties in Arkansas; 26 counties in Mississippi. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 28, 2011, 7:06 AM CDT (12:06 UTC)
- Expired
- Jun 28, 2011, 12:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 54 counties
Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Conway County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Montgomery County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Polk County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, St. Francis County, AR, Alcorn County, MS, Benton County, MS, Bolivar County, MS, Calhoun County, MS, Chickasaw County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Leflore County, MS, Marshall County, MS, Monroe County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS
The radar
The Memphis radar (KNQA), 118 km from the middle of the area, began a volume at 12:08 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
- 5%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- 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 28, 7:16 AM CDT | Severe Thunderstorm Warning | MEG | Craighead, Crittenden, Cross, Mississippi, Poinsett, St. Francis | 29 min |
| Jun 28, 7:26 AM CDT | Severe Thunderstorm Warning | LZK | Monroe, Prairie, White, Woodruff | 34 min |
| Jun 28, 7:36 AM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Faulkner, Van Buren, White | 24 min |
| Jun 28, 7:48 AM CDT | Severe Thunderstorm Warning | MEG | Crittenden, Cross, Lee, Mississippi, Poinsett, St. Francis | 42 min |
| Jun 28, 7:50 AM CDT | Severe Thunderstorm Warning | LZK | Lonoke, Prairie | 25 min |
| Jun 28, 8:02 AM CDT | Severe Thunderstorm Warning | LZK | Conway, Pope | 28 min |
| Jun 28, 8:24 AM CDT | Severe Thunderstorm Warning | LZK | Arkansas, Prairie | 26 min |
| Jun 28, 8:26 AM CDT | Severe Thunderstorm Warning | LZK | Conway, Perry, Pope, Pulaski, Yell | 34 min |
| Jun 28, 8:30 AM CDT | Severe Thunderstorm Warning | MEG | Crittenden, Lee, St. Francis | 45 min |
| Jun 28, 8:47 AM CDT | Severe Thunderstorm Warning | LZK | Garland, Perry, Saline | 28 min |
| Jun 28, 8:57 AM CDT | Severe Thunderstorm Warning | LZK | Faulkner, Perry, Pulaski, Saline | 33 min |
| Jun 28, 8:57 AM CDT | Severe Thunderstorm Warning | MEG | Benton, Lafayette, Marshall, Panola, Tate, Tippah | 48 min |
| Jun 28, 9:13 AM CDT | Severe Thunderstorm Warning | LZK | Faulkner, Pulaski, Saline | 32 min |
| Jun 28, 9:34 AM CDT | Severe Thunderstorm Warning | MEG | Alcorn, Benton, Lafayette, Marshall, Prentiss, Tippah and 1 more | 41 min |
| Jun 28, 10:08 AM CDT | Severe Thunderstorm Warning | LZK | Garland, Montgomery, Perry, Saline, Yell | 26 min |
| Jun 28, 10:10 AM CDT | Severe Thunderstorm Warning | MEG | Alcorn, Itawamba, Lee, Prentiss, Tippah, Tishomingo and 1 more | 50 min |
| Jun 28, 10:11 AM CDT | Flash Flood Warning | MEG | Alcorn | 3 hr |
| Jun 28, 10:16 AM CDT | Flash Flood Warning | MEG | Tishomingo | 3 hr |
| Jun 28, 10:23 AM CDT | Severe Thunderstorm Warning | LZK | Garland, Saline | 37 min |
| Jun 28, 10:31 AM CDT | Severe Thunderstorm Warning | LZK | Garland, Hot Spring, Saline | 44 min |
| Jun 28, 10:54 AM CDT | Severe Thunderstorm Warning | LZK | Garland, Montgomery, Scott | 51 min |
| Jun 28, 11:09 AM CDT | Flash Flood Warning | MEG | Lee | 3 hr |
| Jun 28, 11:11 AM CDT | Severe Thunderstorm Warning | LZK | Garland, Hot Spring, Saline | 34 min |
| Jun 28, 11:22 AM CDT | Severe Thunderstorm Warning | LZK | Garland, Hot Spring, Montgomery | 38 min |
| Jun 28, 11:35 AM CDT | Severe Thunderstorm Warning | LZK | Clark, Garland, Hot Spring | 25 min |
| Jun 28, 11:56 AM CDT | Severe Thunderstorm Warning | LZK | Clark, Hot Spring | 34 min |
| Jun 28, 11:56 AM CDT | Severe Thunderstorm Warning | LZK | Clark, Hot Spring, Montgomery, Pike | 49 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
Little Rock, AR (KLZK), launched 12:00Z, 0.1 hours before the alert went out and 88 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
- 2921 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1168 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 7:05 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Clay, Fulton and 9 more | 115 min |
| Jun 28, 4:08 AM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Clay, Cleburne and 25 more | 82 min |
| Jun 28, 4:17 AM CDT | Severe Thunderstorm Watch | SPC | Baxter, Boone, Carroll, Clay, Cleburne, Craighead and 20 more | 8 hr |
| Jun 28, 6:34 AM CDT | Mesoscale Discussion | SPC | Arkansas, Clay, Cleburne, Conway, Craighead, Crittenden and 28 more | 86 min |
| Jun 28, 9:52 AM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Chicot, Dallas, Drew and 1 more | 113 min |
| Jun 28, 10:26 AM CDT | Severe Thunderstorm Watch | SPC | Ashley, Chicot | 8 hr |
| Jun 28, 11:42 AM CDT | Mesoscale Discussion | SPC | Bradley, Calhoun, Clark, Columbia, Dallas, Garland and 13 more | 93 min |
| Jun 28, 11:51 AM CDT | Severe Thunderstorm Watch | SPC | Bradley, Calhoun, Clark, Cleveland, Columbia, Conway and 28 more | 7 hr |
| Jun 28, 3:09 PM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Clark, Cleveland, Columbia and 27 more | 96 min |
| Jun 28, 6:09 PM CDT | Mesoscale Discussion | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more | 96 min |
| Jun 28, 6:08 AM CDT | Mesoscale Discussion | SPC | Alcorn, Prentiss, Tippah, Tishomingo | 97 min |
| Jun 28, 3:19 PM CDT | Mesoscale Discussion | SPC | Adams, Claiborne, Clarke, Copiah, Covington, Franklin and 6 more | 116 min |
| Jun 28, 1:44 PM CDT | Mesoscale Discussion | SPC | Carter, Cocke, Greene, Johnson, Sullivan, Unicoi and 1 more | 91 min |
Nearby
Severe Thunderstorm Watches in Arkansas, 2011Severe Thunderstorm Watches in Mississippi, 2011Every severe thunderstorm watch in 2011
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.