Alert archive / Missouri / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 780
The Storm Prediction Center issued this severe thunderstorm watch at Dec 18, 2002, 2:15 AM CST for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 18, 2002, 2:15 AM CST (08:15 UTC)
- Expired
- Dec 18, 2002, 8:00 AM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 51 counties
Davis County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Louisa County, IA, Muscatine County, IA, Van Buren County, IA, Adams County, IL, Hancock County, IL, Henderson County, IL, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Adair County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clark County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Grundy County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Monroe County, MO, Pettis County, MO, Platte County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO
The radar
The Pleasant Hill radar (KEAX), 125 km from the middle of the area, began a volume at 08:15 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.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 8.3 hours before the alert went out and 314 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
- 39 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1087 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 267 m²/s²
- 0-3 km storm-relative helicity
- 432 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 17, 10:40 PM CST | Tornado Watch | SPC | Calhoun, Cass, Greene, Jersey, Macoupin, Madison and 7 more | 5 hr |
| Dec 18, 3:30 AM CST | Tornado Watch | SPC | Calhoun, Greene, Jersey, Macoupin, Madison, Monroe and 3 more | 5 hr |
| Dec 18, 9:30 AM CST | Tornado Watch | SPC | Adams | 6 hr |
| Dec 18, 4:35 PM CST | Tornado Watch | SPC | Calhoun, Cass, Christian, DeWitt, Greene, Jersey and 8 more | 5 hr |
| Dec 17, 7:35 PM CST | Tornado Watch | SPC | Cherokee | 5 hr |
| Dec 18, 7:20 AM CST | Tornado Watch | SPC | Christian, Dent, Douglas, Howell, Iron, Laclede and 12 more | 6 hr |
| Dec 18, 2:30 PM CST | Tornado Watch | SPC | Butler, Carter, Dunklin, Howell, Mississippi, New Madrid and 4 more | 7 hr |
| Dec 18, 5:50 PM CST | Tornado Watch | SPC | Dunklin, Pemiscot | 3 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2002Severe Thunderstorm Watches in Iowa, 2002Severe Thunderstorm Watches in Kansas, 2002Every severe thunderstorm watch in 2002
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.