Alert archive / Arkansas / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 959
The Storm Prediction Center issued this severe thunderstorm watch at Nov 18, 2003, 10:55 AM CST for 30 counties in Arkansas; 17 counties in Oklahoma. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 18, 2003, 10:55 AM CST (16:55 UTC)
- Expired
- Nov 18, 2003, 4:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 47 counties
Benton County, AR, Calhoun County, AR, Clark County, AR, Conway County, AR, Crawford County, AR, Dallas County, AR, Franklin County, AR, Garland County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Johnson County, AR, Logan County, AR, Madison 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, Saline County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Van Buren County, AR, Washington County, AR, Yell County, AR, Adair County, OK, Cherokee County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 18, 10:58 AM CST | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 47 min |
| Nov 18, 11:30 AM CST | Severe Thunderstorm Warning | TSA | Mayes, Rogers | 45 min |
| Nov 18, 11:56 AM CST | Severe Thunderstorm Warning | TSA | Wagoner | 49 min |
| Nov 18, 12:09 PM CST | Severe Thunderstorm Warning | TSA | Mayes | 51 min |
| Nov 18, 12:18 PM CST | Severe Thunderstorm Warning | TSA | Tulsa | 27 min |
| Nov 18, 12:35 PM CST | Severe Thunderstorm Warning | TSA | Muskogee | 40 min |
| Nov 18, 1:16 PM CST | Severe Thunderstorm Warning | TSA | Cherokee, Haskell, McIntosh, Muskogee, Sequoyah | 44 min |
| Nov 18, 2:55 PM CST | Severe Thunderstorm Warning | TSA | Franklin, Sebastian | 20 min |
| Nov 18, 3:02 PM CST | Severe Thunderstorm Warning | LZK | Scott | 53 min |
| Nov 18, 3:17 PM CST | Severe Thunderstorm Warning | TSA | Franklin | 28 min |
| Nov 18, 3:25 PM CST | Severe Thunderstorm Warning | LZK | Logan | 50 min |
| Nov 18, 3:56 PM CST | Severe Thunderstorm Warning | LZK | Grant, Saline | 59 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 12:00Z, 4.9 hours before the alert went out and 182 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
- 357 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 576 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 17, 7:48 PM CST | Mesoscale Discussion | SPC | Calhoun, Columbia, Hempstead, Lafayette, Little River, Miller and 3 more | 87 min |
| Nov 18, 1:29 AM CST | Mesoscale Discussion | SPC | Arkansas, Clay, Cleveland, Craighead, Crittenden, Cross and 21 more | 3 hr |
| Nov 18, 1:55 AM CST | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clay and 34 more | 6 hr |
| Nov 18, 9:55 AM CST | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Conway, Crawford and 22 more | 65 min |
| Nov 18, 1:11 PM CST | Mesoscale Discussion | SPC | Benton, Clark, Conway, Crawford, Dallas, Franklin and 22 more | 2 hr |
| Nov 18, 2:50 PM CST | Severe Thunderstorm Watch | SPC | Arkansas, Ashley, Baxter, Boone, Bradley, Calhoun and 38 more | 5 hr |
| Nov 18, 4:44 PM CST | Mesoscale Discussion | SPC | Arkansas, Ashley, Baxter, Boone, Bradley, Calhoun and 34 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Arkansas, 2003Severe Thunderstorm Watches in Oklahoma, 2003Every severe thunderstorm watch in 2003
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.