Alert archive / Arkansas / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 646
The Storm Prediction Center issued this severe thunderstorm watch at Jul 16, 2004, 8:35 AM CDT for 49 counties in Arkansas; Bolivar County, Coahoma County, Sunflower County, Mississippi. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 16, 2004, 8:35 AM CDT (13:35 UTC)
- Expired
- Jul 16, 2004, 1:00 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 52 counties
Arkansas County, AR, Baxter County, AR, Boone County, AR, Calhoun County, AR, Carroll County, AR, Clark County, AR, Cleburne County, AR, Cleveland County, AR, Conway County, AR, Craighead County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Marion County, AR, Monroe County, AR, Nevada County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Poinsett County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Searcy County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Bolivar County, MS, Coahoma County, MS, Sunflower County, MS
The radar
The Little Rock radar (KLZK), 66 km from the middle of the area, began a volume at 13:35 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.
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 1.6 hours before the alert went out and 173 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
- 2689 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 935 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 7:34 PM CDT | Mesoscale Discussion | SPC | Ashley, Chicot, Drew | 86 min |
| Jul 15, 8:01 PM CDT | Mesoscale Discussion | SPC | Benton, Bradley, Calhoun, Carroll, Clark, Cleveland and 34 more | 119 min |
| Jul 16, 12:23 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Chicot, Desha, Drew, Jefferson and 4 more | 97 min |
| Jul 16, 12:45 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 12 more | 6 hr |
| Jul 16, 3:03 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Chicot, Cleveland, Desha and 5 more | 117 min |
| Jul 16, 3:37 PM CDT | Mesoscale Discussion | SPC | Arkansas, Bradley, Calhoun, Clark, Cleveland, Conway and 32 more | 113 min |
| Jul 16, 6:44 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 6 more | 61 min |
| Jul 16, 11:42 AM CDT | Mesoscale Discussion | SPC | Attala, Calhoun, Carroll, Choctaw, Clarke, Clay and 33 more | 3 hr |
Nearby
Severe Thunderstorm Watches in Arkansas, 2004Severe Thunderstorm Watches in Mississippi, 2004Every severe thunderstorm watch in 2004
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.