Alert archive / Missouri / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 41, NWS Kansas City, MO

May 4, 1996Johnson County, Kansas; Cass County, Jackson County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 4, 1996, 4:20 AM CDT for Johnson County, Kansas; Cass County, Jackson County, Missouri. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 4, 1996, 4:20 AM CDT (09:20 UTC)
Expired: May 4, 1996, 5:15 AM CDT
In force: 55 min
Issued by: NWS Kansas City, MO
Area: Whole counties

Counties Johnson County, KS, Cass County, MO, Jackson County, MO

The radar

The Pleasant Hill radar (KEAX), 21 km from the middle of the area, began a volume at 09:19 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 00:00Z, 9.3 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.

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: 181 J/kg
Mixed-layer CIN: -292 J/kg
Mixed-layer LCL: 754 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 336 m²/s²
0-3 km storm-relative helicity: 432 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMCI 040920
SVRMCI
KSC091-107-121-MOC013-037-095-041015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
420 AM CDT SAT MAY 4 1996

* SEVERE THUNDERSTORM WARNING FOR
  JOHNSON COUNTY - EAST CENTRAL KANSAS
  LINN COUNTY - EAST CENTRAL KANSAS
  MIAMI COUNTY - EAST CENTRAL KANSAS
  BATES COUNTY - WEST CENTRAL MISSOURI
  CASS COUNTY - WEST CENTRAL MISSOURI
  JACKSON COUNTY - NORTHWEST MISSOURI

* UNTIL 515 AM CDT
 
* SOME LOCATIONS AFFECTED
    OLATHE
    PAOLA
    MOUND CITY
    BUTLER
    HARRISONVILLE
    INDEPENDANCE

* AT 413 AM LOCAL LAW ENFORCEMENT REPORTED A SEVERE THUNDERSTORM JUST
  EAST OF GARDNER IN JOHNSON COUNTY KANSAS MOVING EAST AT 40 MPH.  60
  MPH WINDS WERE REPORTED IN GARDNER IN SOUTHWEST JOHNSON COUNTY AT 410
  AM.

* THE STORM WILL MOVE ACROSS THESE COUNTIES BETWEEN 425 AM AND
  515AM.   WINDS IN EXCESS OF 60 MPH...AND GOLF BALL SIZE HAIL
  POSSIBLE.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER INSIDE A STRONG BUILDING.



SMITH
 

&

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 4, 2:06 AM CDT, 2 hours 14 minutes earlier.

Area forecast discussion, May 4, 2:06 AM CDT, 2 hours 14 minutes before

NORTHWEST MISSOURI FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
205 AM CDT SAT MAY 4 1996

WILL ISSUE FCST THOUGHTS ERLY THIS AM AS WE GET READY FOR NEXT ROUND OF
SVR WX DURING THE NEXT FEW HRS...
TSTM COMPLEX OVR CNTL KS ALG AND JUST N OF FNTL BNDRY BEING FUELED BY
SHRT WV AT H7 AND H5...STG LO LVL JET AND THETA-E ADVT. 06Z PROFILERS
AT H8 SHOWING 50 KT WNDS OVR NRN OK AND SE KS. MODELS APPR TO HAVE
DECENT HANDLE ON SHRT WV MVNG ACR KS. 88-D DATA SHWS TSTMS DVLP N OF
STJ AREA BUT MAIN SHOW LKS LIKE IT WILL MOVE INTO CWA BET 0800Z-0830Z.
AS TSTMS TRACK ALG 850-300 MB THICKNESS GRADIENT FAVORED AREA OF CWA
FOR POTENTIALLY SVR WX THIS APPR TO BE S OF MO RVR. WITH FLASH FLOOD
GUIDANCE SHOWING RAINFALL THRESHOLDS IN 1-2 INCH RANGE AGN WOULD LIKE
TO XTND FFW ACR SRN CWA. COULD BE SOME INTENSE R+ AS +15 DEW PTS AT H8
GET INJECTED INTO TSTMS. FOR FCST LIKE SIMILAR IDEA AS FRI AM...FM KC
METRO EWRD TO MOBERLY AND POINTS S...LIKE SHWRS/TSTMS LIKELY THIS
AM...SOME CONTAINING R+...THEN MAYBE 30 PCT POP THIS PM...POINTS TO N
WOULD LIKE TO GO WITH 50 PCT CHC SHWRS TSTMS TDY.

AS SHRT WV MVS EWRD TDY...LO LVL JET GETS PUSHED EWRD WITH IT TAKING
FUEL SUPPLY FOR TSTMS AND R+. HOWEVER DO NOT WANT TO REMOVE POPS FOR
TNT ATTM WITH STG W TO NW FLOW ALF. FOR SUN...MODELS ADVERTISING ENOUGH
SFC RIDGING TO GET RID OF POPS. SUN SHOULD TURN OUT TO BE A DECENT DAY.
AS FAR AS TEMPS GO PREFER COOLER FAN NUMBERS AGN TDYh WITH CLDS...PCPN
AND ERLY FLOW. ALSO LIKE COOLER FAN FOR SUN AS GRIDDED DATA SHOWING LO
LVL CAA.

MCI 66/52 62

BODNER

In the hours before

Special weather statement, May 3, 10:25 PM CDT, 5 hours 55 minutes before

KSZ057-060-MOZ039-040-043>046-053-054-041100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1030 PM CDT FRI MAY 3 1996

...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR EXTREME EAST CENTRAL
KANSAS AND CENTRAL MISSOURI TONIGHT...

RECENT HEAVY RAIN THAT FELL OVER THE PAST WEEK HAS SATURATED THE SOIL
ACROSS MUCH OF THE REGION.  WITH THE THREAT OF THUNDERSTORMS TONIGHT
...ADDITIONAL HEAVY RAINFALL WILL AGGRAVATE THE SITUATION AND MAY
CAUSE SERIOUS FLOODING.

PEOPLE WHO LIVE IN OR CLOSE TO FLOOD PRONE LOCATIONS SHOULD CONTINUE
TO MONITOR WEATHER DEVELOPMENTS THROUGH THE NIGHT.  BE READY FOR
QUICK ACTION IF FLOODING IS OBSERVED OR A WARNING IS ISSUED.

DJV

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 2:38 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Linn, Miami	57 min
May 4, 2:38 AM CDT	Severe Thunderstorm Warning	EAX	Leavenworth	57 min
May 4, 4:20 AM CDT	Severe Thunderstorm Warning	EAX	Linn, Miami	55 min
May 4, 3:18 AM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass	42 min
May 4, 3:44 AM CDT	Severe Thunderstorm Warning	EAX	Henry	41 min
May 4, 4:07 AM CDT	Severe Thunderstorm Warning	EAX	Johnson	63 min
May 4, 5:03 AM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson, Lafayette	62 min
May 4, 5:24 AM CDT	Severe Thunderstorm Warning	EAX	Pettis	46 min
May 4, 5:40 AM CDT	Severe Thunderstorm Warning	EAX	Ray	55 min
May 4, 5:47 AM CDT	Severe Thunderstorm Warning	EAX	Cooper	78 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1996 Severe Thunderstorm Warnings in Kansas, 1996 Every severe thunderstorm warning in 1996

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.