Alert archive / Missouri / Flash Flood Warnings in 1998

Flash Flood Warning 42, NWS Kansas City, MO

October 4, 1998Jackson County, Missouri

NWS Kansas City, MO issued this flash flood warning at Oct 4, 1998, 2:58 PM CDT for Jackson County, Missouri. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 4, 1998, 2:58 PM CDT (19:58 UTC)
Expired: Oct 4, 1998, 7:00 PM CDT
In force: 4 hr
Issued by: NWS Kansas City, MO
Area: Whole counties

County Jackson County, MO

The radar

The Pleasant Hill radar (KEAX), 23 km from the middle of the area, began a volume at 20:01 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.

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 8.0 hours before the alert went out and 112 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 565 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 310 m²/s²
0-3 km storm-relative helicity: 306 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMCI 042001
FFWMCI
MOC095-050000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY-PLEASANT HILL MO
258 PM CDT SUN OCT 4 1998

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

   * FLASH FLOOD WARNING FOR...
     JACKSON COUNTY IN MISSOURI

   * UNTIL 700 PM CDT

   * AT 256 PM CDT SPOTTERS REPORTED FLOODING OF 150 HIGHWAY      
     IN SOUTHERN JACKSON COUNTY.

   * OTHER LOCATIONS IN THE WARNING INCLUDE SIBLEY...RAYTOWN...LONE
     JACK...LEES SUMMIT...LAKE LOTAWANA...INDEPENDENCE...GREENWOOD...
     GRANDVIEW...GRAIN VALLEY...BUCKNER AND BLUE SPRINGS

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
PLEASANT HILL.

LAT...LON 3909 9460 3886 9\457 3884 9415 3920 9420

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.

NWS Kansas City, MO wrote its last area forecast discussion before this flash flood warning went out at Oct 4, 2:58 AM CDT, 12 hours earlier.

Area forecast discussion, Oct 4, 2:58 AM CDT, 12 hours before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
258 AM CDT SUN OCT 4 1998

MAIN FORECAST CONCERNS THIS PACKAGE ARE WITH RISK OF SEVERE TODAY
AND CHANCES OF PRECIPITATION ON MONDAY.

REGARDING TODAY...PREFER ETA WHEN COMPARING SATELLITE TO 06Z
DEPICTION OF UPPER JET AND TROUGH.  THE ETA IS ODD MODEL OUT WITH
THE FASTEST MOVEMENT OF SHORTWAVE...BUT SEEMS REASONABLE GIVEN
STRENGTH OF JET CURRENTLY ROUNDING BOTTOM OF UPPER TROUGH. EXIT
REGION OF JET POINTED AT WESTERN MISSOURI BY 00Z WITH GOOD DIFLUENCE
ALOFT SETTING UP ACROSS FORECAST AREA. SURFACE LOW IN SOUTHEAST
COLORADO SHOULD QUICKLY EJECT NORTHEAST TODAY INTO NEBRASKA BY 00Z
WITH 50 KT LOW LEVEL JET ACROSS EASTERN KANSAS AND WEST MISSOURI.
SURFACE WARM FRONT LIFTING NORTH WILL BE PULLED UP INTO FORECAST
AREA WITH PRECIPITATION EXPECTED ALONG AND TO ITS NORTH. THEN DRY
LINE RAPIDLY PUSHING THROUGH CENTRAL KANSAS SHOULD HAVE THUNDERSTORM
DEVELOPING ALONG IT THIS AFTERNOON WHICH WOULD ARRIVE INTO WESTERN
PORTIONS OF FORECAST AREA BY EARLY THIS EVENING. BETTER RISK OF
SEVERE WILL BE WITH THESE STORMS AS WIND PROFILE BECOMES MORE
FAVORABLE. BIG QUESTION OF HOW FAR NORTH THE WARM FRONT TRAVELS
TODAY...HOW MUCH CLEARING AND HEATING CAN TAKE PLACE THIS
AFTERNOON...AND HOW UNSTABLE WE WILL BE BY EARLY EVENING AS COOLING
ALOFT IS LAGGING.  WILL MENTION THE POSSIBILITY OF SEVERE IN AREA
SPC OUTLINES A MODERATE RISK. ONE THING FOR SURE...ANY STORMS THIS
AFTERNOON AND EVENING WILL BE MOVING PRETTY FAST.

PRECIPITATION RAPIDLY PUSHED EAST TONIGHT...WITH DRIER AIR PUNCHING
IN TO NORTHWEST MISSOURI. FOR DAY ON MONDAY...ALL BUT SOUTHERN AND
EASTERN FRINGES ON FORECAST AREA SHOWING A PRETTY STRONG CAP WITH
DRYING BELOW 700 MB.  THUS WILL PULL POPS FROM MOST AREAS.

FWC APPEARS TO HAVE BETTER HANDLE ON TEMPS TODAY THAN THE FAN.

.EAX...
KS...NONE.
MO...NONE.

PC

In the hours before

Special weather statement, Oct 4, 1:00 PM CDT, 1 hour 58 minutes before

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-051200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
100 PM CDT SUN OCT 4 1998

...GOOD CHANCE FOR SEVERE WEATHER THIS AFTERNOON AND TONIGHT...

FORECAST: CLUSTERS OF THUNDERSTORMS WILL MOVE ACROSS EASTERN KANSAS
AND WESTERN MISSOURI THIS AFTERNOON...WITH ANOTHER ROUND OR TWO OF
POTENTIALLY SIGNIFICANT SEVERE WEATHER LATE THIS AFTERNOON AND THIS
EVENING. TORNADOES...LARGE HAIL...AND DAMAGING WINDS WILL ALL BE
POSSIBLE. IN ADDITION TO THE SEVERE WEATHER THREAT...THERE WILL
LIKELY BE HEAVY RAINS FROM THESE STORMS...WITH THE POTENTIAL FOR
FLOODING. EMERGENCY MANAGERS SHOULD MONITOR LATER STATEMENTS AND
PROBABLE WARNINGS LATER THIS AFTERNOON AND EVENING. SPOTTER
ACTIVATION WILL LIKELY BE REQUIRED.

DISCUSSION: AN IMPRESSIVE STORM SYSTEM CONTINUES TO GATHER STRENGTH
AT MID-DAY OVER THE CENTRAL PLAINS. A WARM FRONT AT NOON...LOCATED
FROM WEST CENTRAL MISSOURI INTO EAST CENTRAL KANSAS...WILL LIFT
SLOWLY NORTHWARD THIS AFTERNOON. THIS AREA ALONG THE WARM FRONT WILL
HAVE THE BEST THREAT FOR TORNADOES THIS AFTERNOON. FURTHER WEST...
SEVERAL LINES OF THUNDERSTORMS ARE BEGINNING TO DEVELOP OVER CENTRAL
AND EASTERN KANSAS. THESE LINES OF STORMS WILL MOVE RAPIDLY
NORTHEAST INTO THE AREA...KEEPING THE THREAT FOR SEVERE WEATHER
RATHER HIGH INTO TONIGHT. BECAUSE OF THE VERY STRONG WIND FIELDS AT
ALL LEVELS ...SOME OF THE STORMS WILL DEVELOP INTO SUPERCELLS
CAPABLE OF PRODUCING TORNADOES. OTHER STORMS WILL LIKELY PRODUCE
LARGE HAIL AND DAMAGING WINDS.

HEAVY RAIN IS ALSO A DISTINCT THREAT THIS AFTERNOON AND TONIGHT.
WITH THUNDERSTORMS EXPECTING TO REPEAT OVER THE AREA THIS AFTERNOON
AND TONIGHT...THE RISK OF FLASH FLOODING IS ON THE RISE.

POLSTON

Special weather statement, Oct 4, 1:00 PM CDT, 1 hour 58 minutes before

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-051200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
100 PM CDT SUN OCT 4 1998

...GOOD CHANCE FOR SEVERE WEATHER THIS AFTERNOON AND TONIGHT...

FORECAST: CLUSTERS OF THUNDERSTORMS WILL MOVE ACROSS EASTERN KANSAS
AND WESTERN MISSOURI THIS AFTERNOON...WITH ANOTHER ROUND OR TWO OF
POTENTIALLY SIGNIFICANT SEVERE WEATHER LATE THIS AFTERNOON AND THIS
EVENING. TORNADOES...LARGE HAIL...AND DAMAGING WINDS WILL ALL BE
POSSIBLE. IN ADDITION TO THE SEVERE WEATHER THREAT...THERE WILL
LIKELY BE HEAVY RAINS FROM THESE STORMS...WITH THE POTENTIAL FOR
FLOODING. EMERGENCY MANAGERS SHOULD MONITOR LATER STATEMENTS AND
PROBABLE WARNINGS LATER THIS AFTERNOON AND EVENING. SPOTTER
ACTIVATION WILL LIKELY BE REQUIRED.

DISCUSSION: AN IMPRESSIVE STORM SYSTEM CONTINUES TO GATHER STRENGTH
AT MID-DAY OVER THE CENTRAL PLAINS. A WARM FRONT AT NOON...LOCATED
FROM WEST CENTRAL MISSOURI INTO EAST CENTRAL KANSAS...WILL LIFT
SLOWLY NORTHWARD THIS AFTERNOON. THIS AREA ALONG THE WARM FRONT WILL
HAVE THE BEST THREAT FOR TORNADOES THIS AFTERNOON. FURTHER WEST...
SEVERAL LINES OF THUNDERSTORMS ARE BEGINNING TO DEVELOP OVER CENTRAL
AND EASTERN KANSAS. THESE LINES OF STORMS WILL MOVE RAPIDLY
NORTHEAST INTO THE AREA...KEEPING THE THREAT FOR SEVERE WEATHER
RATHER HIGH INTO TONIGHT. BECAUSE OF THE VERY STRONG WIND FIELDS AT
ALL LEVELS ...SOME OF THE STORMS WILL DEVELOP INTO SUPERCELLS
CAPABLE OF PRODUCING TORNADOES. OTHER STORMS WILL LIKELY PRODUCE
LARGE HAIL AND DAMAGING WINDS.

HEAVY RAIN IS ALSO A DISTINCT THREAT THIS AFTERNOON AND TONIGHT.
WITH THUNDERSTORMS EXPECTING TO REPEAT OVER THE AREA THIS AFTERNOON
AND TONIGHT...THE RISK OF FLASH FLOODING IS ON THE RISE.

POLSTON

Local storm report, Oct 4, 2:03 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
203 PM CDT SUN OCT 04 1998

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0153 PM    WARRENSBURG               MO    1 INCH HAIL
10/04/98   JOHNSON                         REPORT FROM SHERIFF/S
                                           OFFICE

Local storm report, Oct 4, 2:03 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
203 PM CDT SUN OCT 04 1998

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0153 PM    WARRENSBURG               MO    1 INCH HAIL
10/04/98   JOHNSON                         REPORT FROM SHERIFF/S
                                           OFFICE

Local storm report, Oct 4, 2:25 PM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
225 PM CDT SUN OCT 04 1998

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0205 PM    WARRENSBURG               MO    1 INCH HAIL
10/04/98   JOHNSON                         FROM SPOTTER 4 NORTH
                                           AND 1 EAST OF WARRENSBURG

Local storm report, Oct 4, 2:25 PM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
225 PM CDT SUN OCT 04 1998

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0205 PM    WARRENSBURG               MO    1 INCH HAIL
10/04/98   JOHNSON                         FROM SPOTTER 4 NORTH
                                           AND 1 EAST OF WARRENSBURG

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 4, 11:31 AM CDT	Severe Thunderstorm Warning	EAX	Bates	44 min
Oct 4, 11:55 AM CDT	Severe Thunderstorm Warning	EAX	Henry	50 min
Oct 4, 1:54 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Lafayette	36 min
Oct 4, 3:05 PM CDT	Flash Flood Warning	EAX	Cass	4 hr
Oct 4, 3:05 PM CDT	Flash Flood Warning	EAX	Lafayette	4 hr
Oct 4, 3:47 PM CDT	Flash Flood Warning	EAX	Carroll, Ray	4 hr
Oct 4, 4:48 PM CDT	Severe Thunderstorm Warning	EAX	Lafayette	27 min
Oct 4, 5:22 PM CDT	Severe Thunderstorm Warning	EAX	Carroll	23 min
Oct 4, 5:46 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Chariton	44 min
Oct 4, 6:02 PM CDT	Severe Thunderstorm Warning	EAX	Clinton	43 min

Nearby

Flash Flood Warnings in Missouri, 1998 Every flash flood warning in 1998

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.