Alert archive / Kansas / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 121
The Storm Prediction Center issued this severe thunderstorm watch at Apr 19, 2002, 1:45 AM CDT for 29 counties in Kansas. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2002, 1:45 AM CDT (06:45 UTC)
- Expired
- Apr 19, 2002, 6:00 AM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 29 counties
Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Ellsworth County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Shawnee County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS
The radar
The Topeka radar (KTWX), 58 km from the middle of the area, began a volume at 06:48 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 2:10 AM CDT | Tornado Warning | TOP | Clay, Dickinson | 40 min |
| Apr 19, 2:39 AM CDT | Severe Thunderstorm Warning | TOP | Geary, Riley | 56 min |
| Apr 19, 3:13 AM CDT | Severe Thunderstorm Warning | TOP | Pottawatomie, Wabaunsee | 62 min |
| Apr 19, 3:15 AM CDT | Severe Thunderstorm Warning | TOP | Pottawatomie, Wabaunsee | 60 min |
| Apr 19, 3:19 AM CDT | Severe Thunderstorm Warning | TOP | Jackson | 31 min |
| Apr 19, 3:48 AM CDT | Severe Thunderstorm Warning | TOP | Osage, Wabaunsee | 117 min |
| Apr 19, 3:48 AM CDT | Severe Thunderstorm Warning | TOP | Anderson, Brown, Clay, Cloud, Coffey, Dickinson and 17 more | 170 days |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 6.8 hours before the alert went out and 99 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
- 159 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 2584 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Barton, Butler, Chase, Dickinson, Edwards, Ellsworth and 13 more | 5 hr |
| Apr 19, 5:00 AM CDT | Severe Thunderstorm Watch | SPC | Johnson, Leavenworth, Linn, Miami, Wyandotte | 5 hr |
| Apr 19, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Bourbon, Cherokee, Crawford, Johnson, Linn, Miami | 6 hr |
Nearby
Severe 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.