Alert archive / Arkansas / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 36
The Storm Prediction Center issued this severe thunderstorm watch at Feb 18, 2013, 2:19 PM CST for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 18, 2013, 2:19 PM CST (20:19 UTC)
- Expired
- Feb 18, 2013, 9:00 PM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 79 counties
Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Carroll County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Crawford County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Franklin County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Jefferson County, AR, Johnson County, AR, Lafayette County, AR, Lincoln County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Madison County, AR, Miller County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Union County, AR, Washington County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Red River Parish, LA, Sabine Parish, LA, Webster Parish, LA, LeFlore County, OK, McCurtain County, OK, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX
The radar
The Western Arkansas radar (KSRX), 130 km from the middle of the area, began a volume at 20:22 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
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
53 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 2:32 PM CST | Severe Thunderstorm Warning | TSA | Carroll, Madison | 28 min |
| Feb 18, 2:42 PM CST | Severe Thunderstorm Warning | LZK | Montgomery, Polk | 33 min |
| Feb 18, 2:42 PM CST | Severe Thunderstorm Warning | TSA | Crawford, Franklin | 33 min |
| Feb 18, 2:43 PM CST | Tornado Warning | SHV | Bienville, De Soto, Red River | 47 min |
| Feb 18, 2:49 PM CST | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Madison | 26 min |
| Feb 18, 2:56 PM CST | Severe Thunderstorm Warning | LZK | Johnson | 49 min |
| Feb 18, 3:02 PM CST | Severe Thunderstorm Warning | SHV | Hempstead, Lafayette, Miller | 58 min |
| Feb 18, 3:13 PM CST | Severe Thunderstorm Warning | LZK | Garland, Montgomery | 32 min |
| Feb 18, 3:15 PM CST | Tornado Warning | SHV | Hempstead, Lafayette, Miller | 45 min |
| Feb 18, 3:34 PM CST | Severe Thunderstorm Warning | LZK | Johnson, Logan, Newton, Pope, Searcy, Van Buren and 1 more | 26 min |
| Feb 18, 3:39 PM CST | Severe Thunderstorm Warning | LZK | Montgomery, Polk, Scott, Yell | 36 min |
| Feb 18, 3:44 PM CST | Severe Thunderstorm Warning | LZK | Montgomery, Pike, Polk | 31 min |
| Feb 18, 3:50 PM CST | Tornado Warning | SHV | Columbia, Hempstead, Lafayette, Nevada | 25 min |
| Feb 18, 3:59 PM CST | Severe Thunderstorm Warning | LZK | Conway, Logan, Pope, Van Buren, Yell | 31 min |
| Feb 18, 4:03 PM CST | Tornado Warning | SHV | Columbia, Union | 27 min |
| Feb 18, 4:05 PM CST | Severe Thunderstorm Warning | LZK | Clark, Garland, Hot Spring, Montgomery, Pike | 25 min |
| Feb 18, 4:06 PM CST | Severe Thunderstorm Warning | SHV | Hempstead, Howard, Little River, Nevada, Sevier | 39 min |
| Feb 18, 4:22 PM CST | Severe Thunderstorm Warning | LZK | Garland, Saline | 23 min |
| Feb 18, 4:26 PM CST | Severe Thunderstorm Warning | SHV | Gregg, Rusk, Smith | 49 min |
| Feb 18, 4:29 PM CST | Severe Thunderstorm Warning | SHV | Miller | 46 min |
| Feb 18, 4:30 PM CST | Severe Thunderstorm Warning | LZK | Clark, Garland, Hot Spring, Pike | 30 min |
| Feb 18, 4:43 PM CST | Severe Thunderstorm Warning | LZK | Clark, Garland, Grant, Hot Spring, Saline | 47 min |
| Feb 18, 4:48 PM CST | Tornado Warning | SHV | Hempstead, Nevada | 27 min |
| Feb 18, 4:49 PM CST | Severe Thunderstorm Warning | LZK | Pulaski, Saline | 41 min |
| Feb 18, 5:01 PM CST | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 59 min |
| Feb 18, 5:03 PM CST | Severe Thunderstorm Warning | LZK | Clark, Dallas | 42 min |
| Feb 18, 5:05 PM CST | Severe Thunderstorm Warning | SHV | Hempstead, Little River, Miller, Nevada | 40 min |
| Feb 18, 5:11 PM CST | Severe Thunderstorm Warning | SHV | Cherokee, Rusk, Smith | 34 min |
| Feb 18, 5:13 PM CST | Tornado Warning | SHV | Gregg, Panola, Rusk | 32 min |
| Feb 18, 5:16 PM CST | Severe Thunderstorm Warning | SHV | Caddo | 29 min |
| Feb 18, 5:19 PM CST | Severe Thunderstorm Warning | SHV | Nevada | 26 min |
| Feb 18, 5:26 PM CST | Tornado Warning | SHV | Nacogdoches, Panola, Rusk, Shelby | 34 min |
| Feb 18, 5:27 PM CST | Severe Thunderstorm Warning | LZK | Lonoke, Pulaski, White | 33 min |
| Feb 18, 5:42 PM CST | Severe Thunderstorm Warning | LZK | Calhoun, Clark, Cleveland, Dallas, Grant, Ouachita | 33 min |
| Feb 18, 5:45 PM CST | Severe Thunderstorm Warning | SHV | Cherokee, Nacogdoches, Rusk | 45 min |
| Feb 18, 5:45 PM CST | Tornado Warning | SHV | Panola, Rusk | 45 min |
| Feb 18, 5:49 PM CST | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 26 min |
| Feb 18, 5:59 PM CST | Tornado Warning | SHV | Nacogdoches, Panola, Rusk, Shelby | 46 min |
| Feb 18, 6:01 PM CST | Severe Thunderstorm Warning | LZK | Arkansas, Grant, Jefferson, Lonoke, Prairie, Pulaski | 44 min |
| Feb 18, 6:03 PM CST | Severe Thunderstorm Warning | SHV | Columbia, Lafayette | 27 min |
| Feb 18, 6:04 PM CST | Tornado Warning | SHV | Bossier, Caddo | 41 min |
| Feb 18, 6:06 PM CST | Severe Thunderstorm Warning | LZK | Monroe, Prairie, White, Woodruff | 39 min |
| Feb 18, 6:14 PM CST | Severe Thunderstorm Warning | LZK | Cleveland, Dallas, Grant, Jefferson | 31 min |
| Feb 18, 6:15 PM CST | Severe Thunderstorm Warning | LZK | Arkansas, Lonoke, Prairie | 30 min |
| Feb 18, 6:15 PM CST | Tornado Warning | SHV | Columbia, Lafayette | 30 min |
| Feb 18, 6:29 PM CST | Tornado Warning | SHV | Caddo, De Soto | 46 min |
| Feb 18, 6:36 PM CST | Severe Thunderstorm Warning | LZK | Arkansas, Calhoun, Cleveland, Dallas, Drew, Jefferson and 2 more | 39 min |
| Feb 18, 6:39 PM CST | Severe Thunderstorm Warning | LZK | Arkansas, Jefferson, Monroe, Prairie | 51 min |
| Feb 18, 6:43 PM CST | Tornado Warning | SHV | De Soto | 47 min |
| Feb 18, 7:13 PM CST | Severe Thunderstorm Warning | LZK | Arkansas, Cleveland, Desha, Drew, Jefferson, Lincoln | 47 min |
| Feb 18, 7:29 PM CST | Severe Thunderstorm Warning | LZK | Arkansas, Monroe | 31 min |
| Feb 18, 7:29 PM CST | Severe Thunderstorm Warning | LZK | Bradley, Cleveland, Desha, Drew | 31 min |
| Feb 18, 7:47 PM CST | Severe Thunderstorm Warning | LZK | Arkansas, Desha, Drew | 43 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
Shreveport, LA (KSHV), launched 12:00Z, 8.3 hours before the alert went out and 191 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
- 668 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 510 m²/s²
- 0-3 km storm-relative helicity
- 670 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 18, 1:29 PM CST | Mesoscale Discussion | SPC | Clark, Columbia, Crawford, Franklin, Garland, Hempstead and 14 more | 2 hr |
| Feb 18, 3:52 PM CST | Mesoscale Discussion | SPC | Calhoun, Clark, Columbia, Conway, Dallas, Garland and 15 more | 83 min |
| Feb 18, 4:54 PM CST | Mesoscale Discussion | SPC | Arkansas, Desha, Drew, Independence, Jackson, Jefferson and 7 more | 66 min |
| Feb 18, 5:59 PM CST | Mesoscale Discussion | SPC | Bradley, Calhoun, Cleveland, Columbia, Dallas, Jefferson and 5 more | 91 min |
| Feb 18, 2:08 PM CST | Mesoscale Discussion | SPC | Beauregard, De Soto, Natchitoches, Red River, Sabine, Vernon | 67 min |
| Feb 18, 5:06 PM CST | Mesoscale Discussion | SPC | Sabine | 84 min |
Nearby
Severe Thunderstorm Watches in Arkansas, 2013Severe Thunderstorm Watches in Texas, 2013Severe Thunderstorm Watches in Louisiana, 2013Every severe thunderstorm watch in 2013
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.