Alert archive / Arkansas / Severe Thunderstorm Watches in 2009
Severe Thunderstorm Watch 33
The Storm Prediction Center issued this severe thunderstorm watch at Feb 26, 2009, 6:12 PM CST for 46 counties in Arkansas; 8 counties in Oklahoma. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 26, 2009, 6:12 PM CST (00:12 UTC)
- Expired
- Feb 27, 2009, 1:51 AM CST
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 54 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Clark County, AR, Cleburne County, AR, Columbia County, AR, Conway County, AR, Crawford County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Johnson County, AR, Lafayette County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Madison County, AR, Marion County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Yell County, AR, Adair County, OK, Choctaw County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, McCurtain County, OK, Pushmataha County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 53 km from the middle of the area, began a volume at 00:12 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
- 20%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
33 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 26, 6:33 PM CST | Severe Thunderstorm Warning | TSA | Crawford, Washington | 42 min |
| Feb 26, 6:35 PM CST | Severe Thunderstorm Warning | TSA | Sebastian | 40 min |
| Feb 26, 6:38 PM CST | Severe Thunderstorm Warning | TSA | Sebastian | 52 min |
| Feb 26, 6:41 PM CST | Severe Thunderstorm Warning | TSA | Carroll, Madison, Washington | 64 min |
| Feb 26, 7:14 PM CST | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Sebastian | 61 min |
| Feb 26, 7:14 PM CST | Severe Thunderstorm Warning | TSA | Crawford, Franklin | 46 min |
| Feb 26, 7:42 PM CST | Severe Thunderstorm Warning | TSA | Latimer, LeFlore, Pushmataha | 63 min |
| Feb 26, 7:45 PM CST | Severe Thunderstorm Warning | LZK | Johnson | 45 min |
| Feb 26, 7:53 PM CST | Severe Thunderstorm Warning | LZK | Logan, Scott | 67 min |
| Feb 26, 8:06 PM CST | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 54 min |
| Feb 26, 8:17 PM CST | Severe Thunderstorm Warning | TSA | Sebastian | 28 min |
| Feb 26, 8:28 PM CST | Severe Thunderstorm Warning | LZK | Johnson, Logan, Pope, Yell | 62 min |
| Feb 26, 8:38 PM CST | Severe Thunderstorm Warning | SHV | McCurtain | 52 min |
| Feb 26, 8:40 PM CST | Severe Thunderstorm Warning | LZK | Garland, Logan, Perry, Scott, Yell | 65 min |
| Feb 26, 8:57 PM CST | Severe Thunderstorm Warning | TSA | Choctaw | 26 min |
| Feb 26, 9:06 PM CST | Severe Thunderstorm Warning | LZK | Conway, Faulkner, Perry, Pope | 39 min |
| Feb 26, 9:08 PM CST | Severe Thunderstorm Warning | SHV | McCurtain | 52 min |
| Feb 26, 9:38 PM CST | Severe Thunderstorm Warning | LZK | Faulkner, White | 52 min |
| Feb 26, 9:45 PM CST | Severe Thunderstorm Warning | LZK | Garland, Perry, Saline, Yell | 60 min |
| Feb 26, 9:47 PM CST | Severe Thunderstorm Warning | LZK | Conway, Faulkner | 43 min |
| Feb 26, 9:47 PM CST | Severe Thunderstorm Warning | SHV | Howard, Sevier | 43 min |
| Feb 26, 9:55 PM CST | Severe Thunderstorm Warning | SHV | McCurtain | 35 min |
| Feb 26, 10:02 PM CST | Severe Thunderstorm Warning | SHV | Little River, Sevier | 28 min |
| Feb 26, 10:10 PM CST | Severe Thunderstorm Warning | LZK | Pike | 43 min |
| Feb 26, 10:12 PM CST | Severe Thunderstorm Warning | SHV | Howard | 33 min |
| Feb 26, 10:26 PM CST | Severe Thunderstorm Warning | LZK | Grant, Pulaski, Saline | 64 min |
| Feb 26, 10:28 PM CST | Severe Thunderstorm Warning | LZK | Faulkner, Lonoke, Pulaski, White | 47 min |
| Feb 26, 10:40 PM CST | Severe Thunderstorm Warning | SHV | McCurtain | 50 min |
| Feb 26, 10:42 PM CST | Severe Thunderstorm Warning | SHV | Howard | 33 min |
| Feb 26, 11:17 PM CST | Severe Thunderstorm Warning | LZK | Jefferson, Lonoke, Pulaski | 58 min |
| Feb 26, 11:18 PM CST | Severe Thunderstorm Warning | LZK | Garland, Saline | 27 min |
| Feb 27, 12:06 AM CST | Severe Thunderstorm Warning | LZK | Arkansas, Lonoke, Monroe, Prairie | 39 min |
| Feb 27, 12:35 AM CST | Severe Thunderstorm Warning | LZK | Clark, Dallas, Hot Spring | 40 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, 0.2 hours before the alert went out and 223 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
- 935 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1189 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 214 m²/s²
- 0-3 km storm-relative helicity
- 275 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 6.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 26, 7:42 PM CST | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Clark, Clay, Cleburne and 41 more | 93 min |
| Feb 26, 8:29 PM CST | Mesoscale Discussion | SPC | Hempstead, Lafayette, Little River, Miller, Nevada | 2 hr |
| Feb 26, 9:09 PM CST | Mesoscale Discussion | SPC | Arkansas, Clay, Craighead, Crittenden, Cross, Grant and 12 more | 96 min |
| Feb 26, 9:40 PM CST | Severe Thunderstorm Watch | SPC | Arkansas, Bradley, Calhoun, Clay, Cleveland, Craighead and 20 more | 5 hr |
| Feb 26, 10:36 PM CST | Mesoscale Discussion | SPC | Arkansas, Baxter, Bradley, Calhoun, Clark, Clay and 46 more | 114 min |
| Feb 27, 1:45 AM CST | Mesoscale Discussion | SPC | Arkansas, Cleveland, Craighead, Crittenden, Cross, Dallas and 18 more | 30 min |
| Feb 27, 8:29 AM CST | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 10 more | 31 min |
| Feb 27, 8:40 AM CST | Severe Thunderstorm Watch | SPC | Ashley, Bradley, Calhoun, Chicot, Cleveland, Columbia and 7 more | 6 hr |
| Feb 27, 10:15 AM CST | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Chicot, Clark, Cleveland and 10 more | 90 min |
| Feb 27, 12:16 PM CST | Mesoscale Discussion | SPC | Chicot | 89 min |
| Feb 27, 12:38 PM CST | Tornado Watch | SPC | Ashley, Chicot | 7 hr |
| Feb 27, 2:40 PM CST | Mesoscale Discussion | SPC | Arkansas, Clark, Cleveland, Conway, Dallas, Desha and 21 more | 65 min |
Nearby
Severe Thunderstorm Watches in Arkansas, 2009Severe Thunderstorm Watches in Oklahoma, 2009Every severe thunderstorm watch in 2009
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.