Alert archive / Arkansas / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 77
The Storm Prediction Center issued this severe thunderstorm watch at Apr 13, 2014, 7:14 PM CDT for 22 counties in Arkansas; 6 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 13, 2014, 7:14 PM CDT (00:14 UTC)
- Expired
- Apr 14, 2014, 1:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 65 kt
All 28 counties
Clark County, AR, Cleburne County, AR, Conway County, AR, Crawford County, AR, Faulkner County, AR, Franklin County, AR, Garland County, AR, Hot Spring County, AR, Johnson County, AR, Logan County, AR, Montgomery County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Sebastian County, AR, Stone County, AR, Van Buren County, AR, Yell County, AR, Choctaw County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Pushmataha County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 72 km from the middle of the area, began a volume at 00:16 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
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 7:27 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Muskogee, Sequoyah | 48 min |
| Apr 13, 7:54 PM CDT | Flash Flood Warning | LZK | Lonoke, Prairie, Pulaski, White | 3 hr |
| Apr 13, 8:02 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Madison, Washington | 58 min |
| Apr 13, 8:10 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Sebastian | 50 min |
| Apr 13, 8:18 PM CDT | Severe Thunderstorm Warning | TSA | Sebastian | 42 min |
| Apr 13, 8:28 PM CDT | Tornado Warning | TSA | Crawford, Franklin, Sebastian | 47 min |
| Apr 13, 8:51 PM CDT | Severe Thunderstorm Warning | LZK | Johnson, Logan, Newton, Pope, Scott, Yell | 39 min |
| Apr 13, 8:54 PM CDT | Severe Thunderstorm Warning | TSA | Sebastian | 51 min |
| Apr 13, 8:55 PM CDT | Severe Thunderstorm Warning | LZK | Logan, Montgomery, Polk, Scott, Yell | 50 min |
| Apr 13, 8:57 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Latimer, LeFlore, Pushmataha | 63 min |
| Apr 13, 9:01 PM CDT | Severe Thunderstorm Warning | TSA | Franklin, Madison | 14 min |
| Apr 13, 9:27 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Garland, Johnson, Logan, Montgomery, Perry and 4 more | 48 min |
| Apr 13, 9:43 PM CDT | Severe Thunderstorm Warning | LZK | Garland, Montgomery, Pike, Polk, Scott, Yell | 47 min |
| Apr 13, 9:50 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Faulkner, Johnson, Newton, Perry, Pope and 4 more | 40 min |
| Apr 13, 10:08 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Faulkner, Garland, Hot Spring, Montgomery, Perry and 4 more | 37 min |
| Apr 13, 10:23 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Conway, Faulkner, Perry, Stone, Van Buren and 1 more | 37 min |
| Apr 13, 10:28 PM CDT | Severe Thunderstorm Warning | LZK | Garland, Montgomery, Pike, Polk, Scott, Yell | 47 min |
| Apr 13, 10:41 PM CDT | Severe Thunderstorm Warning | LZK | Faulkner, Garland, Hot Spring, Lonoke, Montgomery, Perry and 3 more | 49 min |
| Apr 13, 10:48 PM CDT | Flash Flood Warning | LZK | Hot Spring | 3 hr |
| Apr 13, 10:57 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Faulkner, Independence, Jackson, Lonoke, Prairie and 2 more | 48 min |
| Apr 13, 11:00 PM CDT | Severe Thunderstorm Warning | LZK | Clark, Garland, Hot Spring, Montgomery, Pike | 30 min |
| Apr 13, 11:25 PM CDT | Flash Flood Warning | LZK | Faulkner, Garland, Grant, Hot Spring, Lonoke, Pulaski and 1 more | 3 hr |
| Apr 14, 12:11 AM CDT | Flash Flood Warning | LZK | Hot Spring | 3 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Shreveport, LA (KBAD), launched 00:00Z, 0.2 hours before the alert went out and 251 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
- 244 J/kg
- Mixed-layer CIN
- -117 J/kg
- Mixed-layer LCL
- 826 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 544 m²/s²
- 0-3 km storm-relative helicity
- 713 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 5.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 7:54 PM CDT | Mesoscale Discussion | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more | 66 min |
| Apr 13, 9:12 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Cross, Fulton, Greene, Independence and 8 more | 63 min |
| Apr 13, 10:33 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 49 more | 57 min |
| Apr 13, 11:06 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Bradley, Calhoun, Cleveland, Columbia, Crittenden and 28 more | 6 hr |
| Apr 14, 1:22 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 6 more | 53 min |
| Apr 14, 1:50 AM CDT | Tornado Watch | SPC | Ashley, Chicot | 5 hr |
| Apr 14, 2:05 AM CDT | Mesoscale Discussion | SPC | Bradley, Calhoun, Columbia, Desha, Drew, Hempstead and 5 more | 85 min |
Nearby
Severe Thunderstorm Watches in Arkansas, 2014Severe Thunderstorm Watches in Oklahoma, 2014Every severe thunderstorm watch in 2014
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.