Alert archive / Missouri / Flash Flood Warnings in 1989
Flash Flood Warning 10, NWS Kansas City, MO
NWS Kansas City, MO issued this flash flood warning at Sep 8, 1989, 11:15 PM CDT for Clay County, Platte County, Missouri; Leavenworth County, Kansas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Sep 8, 1989, 11:15 PM CDT (04:15 UTC)
- Expired
- Sep 9, 1989, 2:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS Kansas City, MO
- Area
- Whole counties
Counties Leavenworth County, KS, Clay County, MO, Platte County, MO
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 4.3 hours before the alert went out and 84 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
- 794 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 964 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 457 m²/s²
- 0-3 km storm-relative helicity
- 592 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 19.7
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Sep 8, 6:37 PM CDT, 4 hours 38 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE KANSAS CITY MO INTERNATIONAL AIRPORT 635 PM CDT SEP 8 1989 ...FLASH FLOOD WARNINGS IN EFFECT FOR SOUTHERN PLATTE...CLAY AND WYANDOTTE COUNTIES IN THE KANSAS CITY AREA UNTIL 645 PM... ...FLASH FLOOD WATCH IS IN EFFECT FOR NORTHWEST MISSOURI TONIGHT INCLUDING THE KANSAS CITY AND ST. JOSEPH AREAS... AT 630 PM CDT...SCATTERED SHOWERS AND THUNDERSTORMS...A FEW WITH VERY HEAVY RAIN...WERE OCCURRING OVER NORTHEAST KANSAS...SOUTHEAST NEBRASKA...SOUTHWEST IOWA AND THE NORTHERN HALF OF MISSOURI. THE STRONGEST AND MOST NUMEROUS STORMS WERE OVER NORTHEAST KANSAS... BETWEEN TOPEKA AND KANSAS CITY. THE STRONGEST STORM WAS 10 MILES EAST NORTHEAST OF TOPEKA KANSAS. THE SHOWERS AND THUNDERSTORMS WERE MOVING TOWARD THE NORTHEAST AT 25 MPH.
Special weather statement, Sep 8, 7:40 PM CDT, 3 hours 35 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE KANSAS CITY MO INTERNATIONAL AIRPORT 735 PM CDT SEP 8 1989 ...SEVERE THUNDERSTORM WARNING UNTIL 815 PM CDT FOR EASTERN LEAVENWORTH COUNTY KANSAS AND ALL OF PLATTE COUNTY MISSOURI... ...FLASH FLOOD WATCH IS IN EFFECT FOR NORTHWEST MISSOURI TONIGHT INCLUDING THE KANSAS CITY AND ST. JOSEPH AREAS... AT 730 PM CDT...SCATTERED SHOWERS AND THUNDERSTORMS...A FEW WITH VERY HEAVY RAIN AND HAIL...WERE OCCURRING OVER NORTHEAST KANSAS... SOUTHEAST NEBRASKA...SOUTHWEST IOWA AND THE NORTHERN HALF OF MISSOURI. AT 715 PM ONE AND ONE-HALF INCH HAIL WAS REPORTED ABOUT 10 MILES SOUTH OF LEAVENWORTH KANSAS AND STREET FLOODING WAS OCCURRING IN LANSING KANSAS. THESE STORMS WERE MOVING NORTHEAST AT 25 MPH AND PASSING OVER GROUND NEARLY SATURATED FROM HEAVY RAINFALL EARLIER IN THE DAY. SOME FLOODING IN FLOOD PRONE AREAS CAN BE EXPECTED AS THESE STORMS PASS.
Special weather statement, Sep 8, 8:39 PM CDT, 2 hours 36 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE KANSAS CITY MO INTERNATIONAL AIRPORT 835 PM CDT SEP 8 1989 ...A FLASH FLOOD WARNING IS IN EFFECT FOR LEAVENWORTH COUNTY KANSAS AND PLATTE AND CLAY COUNTY MISSOURI UNTIL 1115 PM CDT... ...FLASH FLOOD WATCH IS IN EFFECT FOR NORTHWEST MISSOURI TONIGHT INCLUDING THE KANSAS CITY AND ST. JOSEPH AREAS... AT 830 PM CDT...SCATTERED SHOWERS AND THUNDERSTORMS...A FEW WITH VERY HEAVY RAIN POSSIBLE HAIL...WERE OCCURRING OVER NORTHEAST KANSAS... SOUTHEAST NEBRASKA...SOUTHWEST IOWA AND THE NORTHERN HALF OF MISSOURI. STRONGEST AND MOST NUMEROUS STORMS WERE SCATTERED FROM EXTREME NORTHWEST MISSOURI TO NEAR TOPEKA KANSAS. ANOTHER STRONG STORM WAS OVER NORTHERN CLAY COUNTY. THESE STORMS WERE MOVING EAST...NORTHEAST AT 25 MPH AND PASSING OVER GROUND NEARLY SATURATED FROM HEAVY RAINFALL EARLIER IN THE DAY. SOME FLOODING OF LOW LYING AREAS CAN BE EXPECTED AS THESE STORMS PASS.
Special weather statement, Sep 8, 9:31 PM CDT, 1 hour 44 minutes before
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</html>Special weather statement, Sep 8, 10:32 PM CDT, 43 minutes before
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</html>Special weather statement, Sep 8, 10:35 PM CDT, 40 minutes before
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</html>The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 7:24 PM CDT | Severe Thunderstorm Warning | EAX | Platte | 51 min |
| Sep 8, 8:15 PM CDT | Flash Flood Warning | EAX | Clay, Platte | 3 hr |
| Sep 8, 9:11 PM CDT | Flash Flood Warning | EAX | Andrew, Nodaway | 5 hr |
| Sep 9, 4:13 AM CDT | Flash Flood Warning | EAX | Platte | 57 min |
| Sep 9, 4:13 AM CDT | Flash Flood Warning | EAX | Clay, Clinton | 57 min |
Nearby
Flash Flood Warnings in Missouri, 1989Flash Flood Warnings in Kansas, 1989Every flash flood warning in 1989
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.