Alert archive / Arkansas / Tornado Watches in 2006
Tornado Watch 323
The Storm Prediction Center issued this tornado watch at May 9, 2006, 9:18 PM CDT for 13 counties in Arkansas; McCurtain County, Oklahoma; Bowie County, Red River County, Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2006, 9:18 PM CDT (02:18 UTC)
- Expired
- May 10, 2006, 3:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
Counties Hempstead County, AR, Howard County, AR, Johnson County, AR, Little River County, AR, Logan County, AR, Miller County, AR, Montgomery County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Sevier County, AR, Yell County, AR, McCurtain County, OK, Bowie County, TX, Red River County, TX
The radar
The Western Arkansas radar (KSRX), 69 km from the middle of the area, began a volume at 02:21 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- 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
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
19 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 9:23 PM CDT | Severe Thunderstorm Warning | SHV | McCurtain | 97 min |
| May 9, 9:44 PM CDT | Severe Thunderstorm Warning | LZK | Logan | 46 min |
| May 9, 10:07 PM CDT | Severe Thunderstorm Warning | SHV | Red River | 53 min |
| May 9, 10:22 PM CDT | Severe Thunderstorm Warning | LZK | Polk | 53 min |
| May 9, 10:29 PM CDT | Severe Thunderstorm Warning | LZK | Logan, Yell | 61 min |
| May 9, 10:29 PM CDT | Severe Thunderstorm Warning | SHV | Sevier | 61 min |
| May 9, 10:40 PM CDT | Tornado Warning | SHV | Red River | 65 min |
| May 9, 10:48 PM CDT | Severe Thunderstorm Warning | SHV | Howard | 57 min |
| May 9, 10:52 PM CDT | Severe Thunderstorm Warning | SHV | Little River | 68 min |
| May 9, 10:54 PM CDT | Severe Thunderstorm Warning | LZK | Montgomery, Pike | 66 min |
| May 9, 11:09 PM CDT | Severe Thunderstorm Warning | SHV | McCurtain | 66 min |
| May 9, 11:18 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Perry, Pope | 57 min |
| May 9, 11:19 PM CDT | Tornado Warning | SHV | Howard, Sevier | 41 min |
| May 9, 11:32 PM CDT | Severe Thunderstorm Warning | SHV | Bowie | 58 min |
| May 9, 11:38 PM CDT | Severe Thunderstorm Warning | SHV | Hempstead | 67 min |
| May 9, 11:41 PM CDT | Tornado Warning | SHV | Red River | 34 min |
| May 10, 12:01 AM CDT | Severe Thunderstorm Warning | SHV | Little River | 44 min |
| May 10, 12:23 AM CDT | Severe Thunderstorm Warning | SHV | Red River | 50 min |
| May 10, 12:29 AM CDT | Severe Thunderstorm Warning | SHV | Miller | 61 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, 2.3 hours before the alert went out and 242 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
- 680 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1161 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 11:14 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 22 more | 5 hr |
| May 10, 12:41 AM CDT | Severe Thunderstorm Watch | SPC | Ashley, Chicot, Craighead, Crittenden, Cross, Lee and 4 more | 7 hr |
| May 10, 4:01 AM CDT | Mesoscale Discussion | SPC | Clark, Crawford, Franklin, Garland, Hempstead, Hot Spring and 14 more | 89 min |
| May 10, 4:24 AM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 42 more | 8 hr |
| May 10, 6:27 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 39 more | 93 min |
| May 10, 10:57 AM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Chicot, Union | 2 hr |
| May 10, 11:09 AM CDT | Severe Thunderstorm Watch | SPC | Ashley, Chicot, Phillips | 3 hr |
| May 9, 8:06 PM CDT | Mesoscale Discussion | SPC | Beckham, Caddo, Canadian, Comanche, Cotton, Custer and 9 more | 84 min |
| May 9, 9:38 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Caddo, Carter, Choctaw, Cleveland and 25 more | 97 min |
| May 9, 10:46 PM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Caddo, Canadian, Carter, Choctaw and 22 more | 7 hr |
| May 10, 5:18 AM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Cotton, Jefferson and 6 more | 87 min |
| May 10, 12:50 PM CDT | Mesoscale Discussion | SPC | Angelina, Nacogdoches, Panola, Sabine, San Augustine, Shelby and 1 more | 115 min |
| May 10, 1:13 PM CDT | Tornado Watch | SPC | Angelina, Cherokee, Hardin, Jasper, Nacogdoches, Newton and 6 more | 8 hr |
| May 10, 2:34 PM CDT | Mesoscale Discussion | SPC | Aransas, Austin, Bee, Brazoria, Brooks, Calhoun and 26 more | 116 min |
| May 10, 2:59 PM CDT | Severe Thunderstorm Watch | SPC | Austin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 11 more | 5 hr |
| May 10, 3:20 PM CDT | Severe Thunderstorm Watch | SPC | Aransas, Bee, Brooks, Calhoun, Cameron, DeWitt and 15 more | 7 hr |
| May 10, 5:04 PM CDT | Mesoscale Discussion | SPC | Brazoria, Calhoun, Chambers, Colorado, Fort Bend, Galveston and 5 more | 116 min |
| May 10, 6:06 PM CDT | Mesoscale Discussion | SPC | Aransas, Brooks, Hidalgo, Jim Hogg, Jim Wells, Kenedy and 6 more | 114 min |
Nearby
Tornado Watches in Arkansas, 2006Tornado Watches in Texas, 2006Tornado Watches in Oklahoma, 2006Every tornado watch in 2006
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.