Alert archive / Missouri / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 837
The Storm Prediction Center issued this severe thunderstorm watch at Aug 4, 2003, 5:30 PM CDT for 11 counties in Arkansas; 15 counties in Missouri; Adair County, Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 4, 2003, 5:30 PM CDT (22:30 UTC)
- Expired
- Aug 4, 2003, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Benton County, AR, Boone County, AR, Carroll County, AR, Conway County, AR, Johnson County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Pope County, AR, Searcy County, AR, Washington County, AR, Barry County, MO, Barton County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Greene County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Polk County, MO, Stone County, MO, Taney County, MO, Vernon County, MO, Webster County, MO, Adair County, OK
The radar
The Springfield radar (KSGF), 52 km from the middle of the area, began a volume at 22:29 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.
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 6:44 PM CDT | Severe Thunderstorm Warning | SGF | Barry, Lawrence | 61 min |
| Aug 4, 8:01 PM CDT | Severe Thunderstorm Warning | SGF | Taney | 59 min |
| Aug 4, 8:13 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Marion | 57 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, 10.5 hours before the alert went out and 8 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
- 1111 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 938 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 1:43 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Greene, Mississippi | 2 hr |
| Aug 4, 1:48 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Johnson, Logan and 6 more | 2 hr |
| Aug 4, 2:40 PM CDT | Severe Thunderstorm Watch | SPC | Baxter, Clay, Cleburne, Craighead, Crittenden, Cross and 15 more | 6 hr |
| Aug 4, 5:11 PM CDT | Mesoscale Discussion | SPC | Barton, Bates, Benton, Camden, Cass, Cedar and 26 more | 94 min |
| Aug 4, 4:40 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 10 more | 2 hr |
| Aug 4, 5:05 PM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Custer and 14 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2003Severe 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; radar from the NEXRAD Level II archive.