Alert archive / Missouri / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 41, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at May 3, 1999, 11:36 PM CDT for Clay County, Platte County, Missouri. It was in force for 39 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 3, 1999, 11:36 PM CDT (04:36 UTC)
- Expired
- May 4, 1999, 12:15 AM CDT
- In force
- 39 min
- Issued by
- NWS Kansas City, MO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Clay County, MO, Platte County, MO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 3, 11:50 PM CDT | Thunderstorm Wind 60 | Weston, MO | A 3-ft diameter, 60-foot tall tree was downed in Weston. Numerous smaller tree limbs and power lines were also downed by thunderstorm winds. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 4.6 hours before the alert went out and 98 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
- 969 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1208 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 193 m²/s²
- 0-3 km storm-relative helicity
- 294 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 13.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 11:36 PM CDT | Severe Thunderstorm Warning | EAX | Jackson | 39 min |
| May 4, 12:12 AM CDT | Severe Thunderstorm Warning | EAX | Cass, Jackson | 48 min |
| May 4, 3:34 PM CDT | Severe Thunderstorm Warning | EAX | Cooper | 26 min |
| May 3, 11:08 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Leavenworth, Wyandotte | 52 min |
| May 3, 11:50 PM CDT | Severe Thunderstorm Warning | EAX | Miami | 40 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.