Alert archive / Missouri / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 109, NWS Kansas City, MO

May 10, 2001Jackson County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 10, 2001, 8:59 AM CDT for Jackson County, Missouri. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: May 10, 2001, 8:59 AM CDT (13:59 UTC)
Expired: May 10, 2001, 9:45 AM CDT
In force: 46 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Jackson County, MO

The radar

The Pleasant Hill radar (KEAX), 23 km from the middle of the area, began a volume at 14:01 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, 2.0 hours before the alert went out and 115 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: 153 J/kg
Mixed-layer CIN: -301 J/kg
Mixed-layer LCL: 1170 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 397 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KEAX 101359
SVRMCI
MOC095-101445-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
859 AM CDT THU MAY 10 2001

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN JACKSON COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 945 AM CDT

* AT 859 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM JUST WEST OF LEES SUMMIT...OR ABOUT 14 MILES 
  SOUTHEAST OF KANSAS CITY...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  INDEPENDENCE AT 905 AM CDT
  LAKE LOTAWANA AT 910 AM CDT
  GRAIN VALLEY AT 920 AM CDT
  OAK GROVE AT 930 AM CDT

THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE HAIL UP TO 1 INCH IN
DIAMETER...AND WINDS IN EXCESS OF 60 MPH. FOR YOUR SAFETY...MOVE
INDOORS AND STAY AWAY FROM WINDOWS. REMEMBER...LIGHTNING IS A THREAT
FROM ALL THUNDERSTORMS. HEAVY RAINS CAN CAUSE LOCALIZED FLOODING OF
LOW LYING AREAS.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG
BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY
LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY
FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 3912 9447 3884 9438 3884 9414 3915 9411

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 10, 2:26 AM CDT, 6 hours 33 minutes earlier.

Area forecast discussion, May 10, 2:26 AM CDT, 6 hours 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
226 AM CDT THU MAY 10 2001

LATEST RADAR TRENDS SHOW THE PCPN ALONG THE IA/MO BORDER MOVING ESE
WHILE THE PCPN IN KANSAS TAKING A MORE SERLY PATH. SVR POTENTIAL
THIS MORNING MINIMAL...ALTHO CONVECTION ITSELF SHUD SUSTAIN ITSELF
THRU CWA THANKS IN PART TO LLVL JET.

BOUNDARY TO THE NORTH IS PROGGED TO COME THRU OVERNITE...WHICH DOES
NOT LEAVE A LOT OF FOCUS FOR TSRA DEVELPMNT THIS AFTN. WHILE
INSTABILITY IS DECENT...ETA SOUNDINGS DO SHOW A BIT OF A CAP AFT
18Z. HOWEVER...OUTFLOW BOUNDARIES SHOULD ABOUND AFT MORNING
CONVECTION CLEARS. FOR THIS REASON...CATEGORICAL POPS THIS MORNING
WILL BE FOLLOWED BY LOW CHC POP THIS AFTN IN I-70 CORRIDOR AND
NORTH. CLOUDS THIS MORNING WILL HINDER HIGHS TDY SOMEWHAT. WILL GO
SOMEWHERE BETWEEN MAV/FWC.

AS SFC BOUNDARY MOVES SOUTH THURS NIGHT...LIKELY POPS LOOK LIKE A
GOOD BET. 0/6 SHEAR AND INSTABILITY POINT TO SVR WX IN NRN ZONES IN
THE EVENING HOURS. OTHER CONCERN IS WITH HEAVY RAIN POTENTIAL.
PRECIP WATER AMOUNTS ARE 1.3 ...BUT NRN MO FFG HAS GONE UP TO
ABOUT 1.7 FOR 3HRLY RAINFALL. FOR NOW WILL JUST MENTION HEAVY RAIN
IN NRN ZONES AND DEFER ANY POSSIBLE FFA ISSUANCE TO DAY CREW.

AVN/ETA BOTH HAVE SFC FRONT NEAR SRN BORDER OF CWA BY 18Z FRI...
WHICH WOULD POINT TO EARLY ENDING PCPN TIME WHICH GOING FCST HAS
WELL IN HAND. FRIDAY TEMPS ARE A CHALLENGE WITH COOLER AIR SURGE AND
CLOUD COVER. WILL GO CLOSER TO MAV GUID.

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

LVQ

In the hours before

Special weather statement, May 10, 6:00 AM CDT, 2 hours 59 minutes before

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-111100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
600 AM CDT THU MAY 10 2001

...RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT...

FORECAST: THUNDERSTORMS WILL EXIT THE AREA THIS MORNING...AND ARE
NOT EXPECTED TO BECOME SEVERE. SCATTERED THUNDERSTORMS ARE POSSIBLE
AGAIN THIS AFTERNOON ACROSS THE ENTIRE OUTLOOK AREA. HOWEVER...THE
BEST CHANCE FOR SEVERE THUNDERSTORMS IS LATE THIS AFTERNOON AND
EARLY EVENING NORTH OF A LINE FROM ST JOSEPH TO PRINCETON...SINKING
SOUTH TO AN I-70 LINE BY MID EVENING. THE MAIN THREAT FROM THESE
STORMS WILL BE LARGE HAIL AND DAMAGING WIND...WITH AN ISOLATED
TORNADO POSSIBLE ALONG THE IOWA MISSOURI BORDER.  AN ADDITIONAL
THREAT ESPECIALLY ACROSS NORTHERN MISSOURI AND EXTREME NORTHEAST
KANSAS WILL BE HEAVY RAINFALL AND LOCALIZED FLOODING.

DISCUSSION: THE THUNDERSTORMS MOVING ACROSS THE OUTLOOK AREA THIS
MORNING WILL LEAVE SURFACE BOUNDARIES THAT MAY CAUSE REGENERATION OF
ADDITIONAL THUNDERSTORMS THIS AFTERNOON. HOWEVER...A COLD FRONT
MOVING INTO NORTHERN MISSOURI LATER TONIGHT WILL BE THE MAIN FOCUS
FOR DEVELOPMENT LATE THIS AFTERNOON AND TONIGHT.

OUTLOOK:  THUNDERSTORMS ARE EXPECTED AGAIN AS EARLY AS SUNDAY NIGHT
OVER FAR NORTHERN MISSOURI...AND THEN OVER THE ENTIRE REGION ON
MONDAY AND TUESDAY OF NEXT WEEK.

LVQ

Local storm report, May 10, 8:28 AM CDT, 31 minutes before

ZCZC STLLSRMCI ALL

TTAA00 KMCI DDHHMM

PRELIMINARY LOCAL STORM REPORT

NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO

828 AM CDT THU MAY 10 2001

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

           ....COUNTY LOCATION....

0750 AM    BONNER SPGS               KS    .75 INCH HAIL

05/10/01   WYANDOTTE

0805 AM    4 NE BONNER SPGS          KS    1.75 INCH HAIL

05/*10/01   WYANDOTTE

0820 AM    KANSAS CITY               KS    .75 INCH HAIL

05/10/01   WYANDOTTE                       59TH ST AND PARALLEL

NNNN

Local storm report, May 10, 8:37 AM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
837 AM CDT THU MAY 10 2001

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

0831 AM    3 W PARKVILLE             MO   .88 INCH HAIL
05/10/01   PLATTE                         DIME TO NICKEL SIZE
                                          HAIL. REPORTED BY
                                          OFF-DUTSY NWS EMPLOYEE.

0834 AM    PARKVILLE                 MO   1 INCH HAIL
05/10/01   PLATTE                         REPORTED BY STORM
                                          SPOTTER.

Local storm report, May 10, 8:42 AM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
842 AM CDT THU MAY 10 2001

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

0840 AM    PARKVILLE                 MO   .75 INCH HAIL
05/10/01   PLATTE                         REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0840 AM    PARKVILLE                 MO   70 MAPH TSTM GUST
05/10/01   PLATTE                         REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Local storm report, May 10, 8:59 AM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
859 AM CDT THU MAY 10 2001

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

0846 AM    2 NE PARKVILLE            MO   .75 INCH HAIL
05/10/01   PLATTE                         REPORTED BY OFF-DUTY
                                          NWS EMPLOYEE. DIME SIZE
                                          HAIL REPORTED AT THE
                                          INTERSECTION OF 64TH
                                          STREET AND INTERSTATE 29.

0847 AM    4 SE KANSAS CITY INTL ARP MO   1.5 INCH HAIL
05/10/01   PLATTE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 8:32 AM CDT	Severe Thunderstorm Warning	EAX	Platte	43 min
May 10, 8:48 AM CDT	Severe Thunderstorm Warning	EAX	Clay	57 min
May 10, 6:49 PM CDT	Severe Thunderstorm Warning	EAX	Atchison	56 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2001 Every severe thunderstorm warning in 2001

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.