Alert archive / Missouri / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 134
The Storm Prediction Center issued this severe thunderstorm watch at Apr 21, 2002, 2:00 AM CDT for 21 counties in Kansas; 44 counties in Missouri; Richardson County, Nebraska. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 21, 2002, 2:00 AM CDT (07:00 UTC)
- Expired
- Apr 21, 2002, 8:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 66 counties
Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Coffey County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Greenwood County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Miami County, KS, Osage County, KS, Shawnee County, KS, Woodson County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Atchison County, MO, Bates County, MO, Benton County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Henry County, MO, Hickory County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Morgan County, MO, Nodaway County, MO, Pettis County, MO, Platte County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, St. Clair County, MO, Sullivan County, MO, Vernon County, MO, Worth County, MO, Richardson County, NE
The radar
The Pleasant Hill radar (KEAX), 42 km from the middle of the area, began a volume at 07:01 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
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 2:57 AM CDT | Severe Thunderstorm Warning | EAX | Johnson, Leavenworth, Wyandotte | 48 min |
| Apr 21, 3:29 AM CDT | Severe Thunderstorm Warning | EAX | Linn | 31 min |
| Apr 21, 3:51 AM CDT | Severe Thunderstorm Warning | EAX | Jackson | 24 min |
| Apr 21, 3:59 AM CDT | Severe Thunderstorm Warning | EAX | Bates | 31 min |
| Apr 21, 4:34 AM CDT | Severe Thunderstorm Warning | EAX | Henry | 26 min |
| Apr 21, 4:38 AM CDT | Severe Thunderstorm Warning | EAX | Henry | 22 min |
| Apr 21, 5:06 AM CDT | Severe Thunderstorm Warning | SGF | Benton | 39 min |
| Apr 21, 5:32 AM CDT | Severe Thunderstorm Warning | SGF | Morgan | 43 min |
| Apr 21, 6:24 AM CDT | Flash Flood Warning | SGF | Benton, Morgan | 6 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 7.0 hours before the alert went out and 79 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
- 6 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 468 m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 374 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 |
|---|---|---|---|---|
| Apr 21, 5:30 AM CDT | Severe Thunderstorm Watch | SPC | Audrain, Boone, Callaway, Camden, Cole, Crawford and 24 more | 6 hr |
| Apr 21, 11:00 AM CDT | Severe Thunderstorm Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 23 more | 5 hr |
| Apr 21, 2:15 PM CDT | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Iron, Madison and 10 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2002Severe Thunderstorm Watches in Kansas, 2002Severe Thunderstorm Watches in Nebraska, 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.