Alert archive / Missouri / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 185, NWS Kansas City, MO

June 9, 2011Adair County, Linn County, Macon County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 9, 2011, 10:28 PM CDT for Adair County, Linn County, Macon County, Missouri. It was in force for 62 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 9, 2011, 10:28 PM CDT (03:28 UTC)
Expired: Jun 9, 2011, 11:30 PM CDT
In force: 62 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Adair County, MO, Linn County, MO, Macon County, MO

The radar

The Pleasant Hill radar (KEAX), 188 km from the middle of the area, began a volume at 03:29 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.

What was reported inside it

Time	Report	Where	Remark
Jun 9, 10:43 PM CDT	HAIL 1.75	2 Nw New Cambria, MO
Jun 9, 10:56 PM CDT	TSTM WND GST 60	4 W Ethel, MO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 15 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 9, 9:48 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 3.5 hours before the alert went out and 259 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: 696 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

205 
WUUS53 KEAX 100328
SVREAX
MOC001-115-121-100430-
/O.NEW.KEAX.SV.W.0185.110610T0328Z-110610T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1028 PM CDT THU JUN 9 2011

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN ADAIR COUNTY IN NORTHEAST MISSOURI...
  EASTERN LINN COUNTY IN NORTH CENTRAL MISSOURI...
  MACON COUNTY IN NORTH CENTRAL MISSOURI...

* UNTIL 1130 PM CDT

* AT 1025 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH...AND GOLF BALL SIZE HAIL.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 13 MILES EAST OF BROWNING TO 9
  MILES NORTH OF BUCKLIN TO BUCKLIN...AND MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LA PLATA...MACON...BUCKLIN...CALLAO...BEVIER...ATLANTA...NEW
  BOSTON...ETHEL...NEW CAMBRIA...SOUTH GIFFORD...ELMER AND GIBBS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE TO A
SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3973 9230 3976 9300 3990 9301 4003 9302
      4004 9293 4004 9287 4004 9285 4005 9285
      4012 9235 3996 9234 3996 9229 3995 9228
TIME...MOT...LOC 0327Z 264DEG 24KT 3998 9291 3991 9288
          3981 9294
WIND...HAIL 60MPH 1.75IN

$$

CDB

5 follow-up statements

121 
WWUS53 KEAX 100344
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1044 PM CDT THU JUN 9 2011

MOC115-100354-
/O.CAN.KEAX.SV.W.0185.000000T0000Z-110610T0430Z/
LINN MO-
1044 PM CDT THU JUN 9 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN LINN COUNTY IN NORTH
CENTRAL MISSOURI IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3973 9230 3980 9285 4005 9285 4012 9235
      3996 9234 3996 9229 3995 9228
TIME...MOT...LOC 0344Z 268DEG 21KT 3989 9278

$$

MOC001-121-100430-
/O.CON.KEAX.SV.W.0185.000000T0000Z-110610T0430Z/
MACON MO-ADAIR MO-
1044 PM CDT THU JUN 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN ADAIR
AND NORTHERN MACON COUNTIES UNTIL 1130 PM CDT...

AT 1039 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH...AND DESTRUCTIVE HAIL UP TO TWO INCHES IN DIAMETER.  THIS
STORM WAS LOCATED 9 MILES NORTHEAST OF BUCKLIN...OR 14 MILES
NORTHEAST OF MARCELINE...MOVING EAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  LA PLATA...ATLANTA...ETHEL...SOUTH GIFFORD...ELMER AND GIBBS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING
SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3973 9230 3980 9285 4005 9285 4012 9235
      3996 9234 3996 9229 3995 9228
TIME...MOT...LOC 0344Z 268DEG 21KT 3989 9278
WIND...HAIL 60MPH 2.00IN

$$

CDB

916 
WWUS53 KEAX 100359
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1059 PM CDT THU JUN 9 2011

MOC001-121-100430-
/O.CON.KEAX.SV.W.0185.000000T0000Z-110610T0430Z/
MACON MO-ADAIR MO-
1059 PM CDT THU JUN 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
ADAIR AND NORTHERN MACON COUNTIES UNTIL 1130 PM CDT...

AT 1056 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 
60 MPH...AND DESTRUCTIVE HAIL UP TO TWO INCHES IN DIAMETER.  THIS 
STORM WAS LOCATED 9 MILES WEST OF ATLANTA...OR 12 MILES SOUTHWEST OF 
LA PLATA...MOVING EAST AT 30 MPH.

AT 1043 PM...TRAINED WEATHER SPOTTERS REPORTED GOLF BALL SIZE HAIL 2 
MILES NORTHWEST OF NEW CAMBRIA.

LOCATIONS IMPACTED INCLUDE...
  LA PLATA...ATLANTA AND GIBBS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING
SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3973 9230 3984 9272 4003 9273 4012 9235
      3996 9234 3996 9229 3995 9228
TIME...MOT...LOC 0358Z 266DEG 28KT 3990 9263
WIND...HAIL 60MPH 2.00IN

$$

CDB

457 
WWUS53 KEAX 100408
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1108 PM CDT THU JUN 9 2011

MOC001-121-100430-
/O.CON.KEAX.SV.W.0185.000000T0000Z-110610T0430Z/
MACON MO-ADAIR MO-
1108 PM CDT THU JUN 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
ADAIR AND NORTHEASTERN MACON COUNTIES UNTIL 1130 PM CDT...

AT 1104 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 
60 MPH...AND GOLF BALL SIZE HAIL.  THIS STORM WAS LOCATED NEAR 
ATLANTA...OR 10 MILES SOUTHWEST OF LA PLATA...MOVING EAST AT 30 MPH.

AT 1043 PM...TRAINED WEATHER SPOTTERS REPORTED GOLF BALL SIZE HAIL 2 
MILES NORTHWEST OF NEW CAMBRIA.

LOCATIONS IMPACTED INCLUDE...
  LA PLATA...ATLANTA AND GIBBS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3975 9230 3986 9268 4004 9265 4012 9235
      3996 9234 3996 9229 3995 9228
TIME...MOT...LOC 0408Z 266DEG 28KT 3990 9253
WIND...HAIL 60MPH 1.75IN

$$

CDB

598 
WWUS53 KEAX 100415
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1115 PM CDT THU JUN 9 2011

MOC001-121-100430-
/O.CON.KEAX.SV.W.0185.000000T0000Z-110610T0430Z/
MACON MO-ADAIR MO-
1115 PM CDT THU JUN 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
ADAIR AND NORTHEASTERN MACON COUNTIES UNTIL 1130 PM CDT...

AT 1113 PM CDT...A SEVERE THUNDERSTORM WAS REPORTED...PRODUCING 
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH...AND PING PONG BALL SIZE HAIL.
THIS STORM WAS LOCATED NEAR ATLANTA...OR 9 MILES SOUTH OF LA 
PLATA...MOVING EAST AT 30 MPH.

AT 1043 PM...TRAINED WEATHER SPOTTERS REPORTED GOLF BALL SIZE HAIL 2 
MILES NORTHWEST OF NEW CAMBRIA.
AT 1056 PM...LOCAL EMERGENCY MANAGEMENT REPORTED A 60 MPH WIND GUST 4
MILES WEST OF ETHEL.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EASTERN MACON AND SOUTHEASTERN ADAIR
  COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS IF YOU ARE IN
THE PATH OF THIS STORM. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3978 9230 3988 9262 4003 9258 4010 9235
      3996 9234 3996 9229 3995 9228
TIME...MOT...LOC 0415Z 266DEG 28KT 3990 9246
WIND...HAIL 70MPH 1.50IN

$$

CDB

557 
WWUS53 KEAX 100430
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1130 PM CDT THU JUN 9 2011

MOC001-121-100439-
/O.EXP.KEAX.SV.W.0185.000000T0000Z-110610T0430Z/
MACON MO-ADAIR MO-
1130 PM CDT THU JUN 9 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ADAIR AND 
NORTHEASTERN MACON COUNTIES WILL EXPIRE AT 1130 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.  HOWEVER SMALL HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH 
THIS THUNDERSTORM OVER THE NEXT 5 TO 10 MINUTES.

LAT...LON 3978 9230 3988 9262 4003 9258 4010 9235
      3996 9234 3996 9229 3995 9228
TIME...MOT...LOC 0429Z 266DEG 28KT 3991 9232

$$

CDB

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 Jun 9, 6:50 PM CDT, 3 hours 38 minutes earlier.

Area forecast discussion, Jun 9, 6:50 PM CDT, 3 hours 38 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
650 PM CDT THU JUN 9 2011

...UPDATED AVIATION DISCUSSION...

.DISCUSSION...

...MESOSCALE CONVECTIVE DISCUSSION...

POTENTIALLY VOLATILE SITUATION UNFOLDING THIS AFTERNOON ACROSS THE
FORECAST AREA WITH SEVERAL AREAS OF INTEREST. IN THE WAKE OF THE
MORNING ACTIVITY...SEVERAL OUTFLOW BOUNDARIES WERE NOTED ACROSS THE
AREA...ALONG WITH THE MAIN SYNOPTIC WARM FROM NOW DRAPED FROM NEAR
FALL CITY NEBRASKA TO KIRKSVILLE MISSOURI. SOUTH OF THE
FRONT...MLCAPE VALUES HAVE RISEN TO 2000-3000 J/KG THROUGH MOST OF
THE WARM SECTOR AS TEMPERATURES HAVE CLIMBED INTO THE UPPER 80S TO
LOWER 90S. ONE CELL OF INTEREST HAS ALREADY DEVELOPED SOUTH OF
KIRKSVILLE WITH PING PONG TO BASEBALL SIZED HAIL REPORTED. ADDITIONAL
DEVELOPMENT WILL BE POSSIBLE ALONG THE WARM FRONT/OUTFLOW BOUNDARIES
ACROSS PORTIONS OF CENTRAL/NORTHERN MISSOURI WHERE MID LEVEL
TEMPERATURES ARE A TAD COOLER. ANY STORMS THAT DEVELOP WILL HAVE THE
POTENTIAL OF PRODUCING VERY LARGE HAIL AND DAMAGING WINDS. SHOULD
THE STORMS RIDE ALONG EXISTING BOUNDARIES...ISOLATED TORNADOES WILL
ALSO BE POSSIBLE.

THE NEXT AREA OF INTEREST EXIST FURTHER WEST ACROSS PORTIONS OF
NORTHEAST KANSAS INTO NORTHWEST MISSOURI WHERE THE INTERSECTION OF
THE SURFACE WARM FRONT...COLD FRONT...AND REMNANT OUTFLOW BOUNDARY
EXISTS. 20Z TOP SOUNDING SHOWS A STOUT CAP REMAINS IN PLACE ACROSS
THIS AREA. HOWEVER...LARGE SCALE ASCENT WILL INCREASE THROUGH THE
REMAINDER OF THE AFTERNOON INTO THIS EVENING AS A POTENT UPPER SHORT
WAVE TROUGH PIVOTS INTO THE PLAINS WITH ASSOCIATED HEIGHT FALLS
OVERSPREADING THE REGION. LATEST SHORT RANGE HIGH RESOLUTION MODELS
INDICATE EXPLOSIVE CONVECTIVE DEVELOPMENT IS POSSIBLE THIS AFTERNOON
AND EVENING WITHIN THIS VICINITY. AS THE UPPER SHORT WAVE TROUGH
APPROACHES THE AREA...MID LEVEL JET STREAK OF 50+KTS WILL NOSE INTO
THE AREA...ENHANCING OVERALL DEEP LAYER SHEAR. THIS SHOULD SUPPORT
LONGER LIVED SUPERCELL STRUCTURES AS THE ACTIVITY MATURES. THE
AFOREMENTIONED SOUNDING ALSO INDICATES STEEP MID LEVEL LAPSE RATES
AND LARGE CAPE WITHIN THE PREFERRED HAIL GROWTH REGION SUGGESTING
THE POTENTIAL FOR VERY LARGE HAIL (GREATER THAN 3 INCHES) WITHIN THE
STRONGER STORMS. IN ADDITION...AS THE LOW LEVEL JET INCREASES THIS
EVENING...THE ASSOCIATED TORNADO POTENTIAL WILL ALSO
INCREASE...ESPECIALLY WITH ANY STORMS THAT CAN MOVE ALONG THE WARM
FRONT OR LATCH ONTO AN EXISTING OUTFLOW BOUNDARY. INITIAL
INDICATIONS FOR WARNING OPERATIONS SUGGESTS CORES OF 50 DBZ UP TO
40KFT AND 60 DBZ ABOVE 30KFT FOR SEVERE SIZED HAIL.

SHORT-MEDIUM RANGE (FRIDAY-THURSDAY)...

BEYOND THIS AFTERNOON...THE POTENTIAL WILL EXISTS FOR ADDITIONAL
THUNDERSTORM ACTIVITY TOMORROW AFTERNOON AS A COLD FRONT MOVES
THROUGH THE AREA. HOWEVER...MUCH WILL DEPEND ON THIS AFTERNOONS
CONVECTION AND ITS EFFECT ON THE MESOSCALE ENVIRONMENT.
NEVERTHELESS...AN UPPER SHORT WAVE TROUGH WILL EJECT ACROSS THE
MIDWEST WHICH SHOULD PROVIDE SUPPORT FOR STRONG TO SEVERE
DEVELOPMENT ONCE AGAIN. ANY ACTIVITY WILL LIKELY PUSH SOUTH OF THE
FORECAST AREA BY FRIDAY NIGHT AS THE SYNOPTIC FRONTAL BOUNDARY SAGS
INTO SOUTHERN MISSOURI. A BRIEF REPRIEVE FROM THE ACTIVE WEATHER
WILL TAKE PLACE ON SATURDAY BEFORE THE NEXT UPPER SHORT WAVE MOVES
INTO THE PLAINS BY SUNDAY. THIS WILL ALLOW THE FRONT TO LIFT BACK
NORTH WITH SHOWERS/THUNDERSTORMS BECOMING LIKELY ONCE AGAIN.

REPEATED ROUNDS OF THUNDERSTORM ACTIVITY WILL BE POSSIBLE THROUGH
THE MIDWEEK TIME FRAME AS SEVERAL UPPER FEATURES TRANSLATES ACROSS
THE REGION. WENT WITH A BLENDED APPROACH FOR NOW GIVEN THE
DISCREPANCIES IN THE GUIDANCE OUTPUT.

DEROCHE

&&

.AVIATION...

FOR THE 00Z TAFS...A SURFACE LOW PRESSURE SYSTEM WAS LOCATED JUST
WEST OF MHT KANSAS WITH A WARM FRONT EXTENDING EAST TO NEAR KSTJ. A
COLD FRONT TRAILS THE LOW TO THE SOUTHWEST NEAR KICT KANSAS. THE LOW
PRESSURE SYSTEM WILL CONTINUE TO TRACK EAST EARLY TONIGHT...POSING A
THREAT FOR STRONG TO SEVERE THUNDERSTORMS...MAINLY BETWEEN 01Z-05Z.
THE COLD FRONT WILL MOVE THROUGH THE TERMINALS BETWEEN 07-09Z WITH
THE MVFR DECK IN NEBRASKA SETTLING INTO THE TERMINALS AFTER 14Z. THE
CEILINGS WILL GRADUALLY LIFT IN THE AFTERNOON. ANOTHER CONCERN IS
THAT ANOTHER WEAK UPPER LEVEL DISTURBANCE NORTH OF THE FRONT MAY
TRIGGER SHOWERS AND ISOLATED THUNDERSTORMS LATE FRIDAY MORNING. THE
PLACEMENT AND TIMING OF THIS ACTIVITY IS LOW.

DB

&&

.EAX WATCHES/WARNINGS/ADVISORIES...
MO...NONE.
KS...NONE.
&&

Hazardous weather outlook, Jun 9, 6:33 PM CDT, 3 hours 55 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
633 PM CDT THU JUN 9 2011

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-101200-
ATCHISON KS-MIAMI-LINN KS-DONIPHAN-LEAVENWORTH-WYANDOTTE-JOHNSON KS-
ATCHISON MO-NODAWAY-WORTH-GENTRY-HARRISON-MERCER-PUTNAM-SCHUYLER-
HOLT-ANDREW-DE KALB-DAVIESS-GRUNDY-SULLIVAN-ADAIR-BUCHANAN-CLINTON-
CALDWELL-LIVINGSTON-LINN MO-MACON-PLATTE-CLAY-RAY-CARROLL-CHARITON-
RANDOLPH-JACKSON-LAFAYETTE-SALINE-HOWARD-CASS-JOHNSON MO-PETTIS-
COOPER-BATES-HENRY-
633 PM CDT THU JUN 9 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND
WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS.

.DAY ONE...TONIGHT

SCATTERED SEVERE THUNDERSTORMS WILL PERSIST ACROSS PORTIONS OF
NORTHERN MISSOURI EARLY THIS EVENING WITH ADDITIONAL DEVELOPMENT
FURTHER SOUTH ACROSS MUCH OF THE REMAINDER OF THE OUTLOOK AREA LATER
THIS EVENING. THE STORMS WILL GRADUALLY SPREAD EAST AND SLOWLY
DIMINISH AFTER MIDNIGHT.

DUE THE COMBINATION OF STRONG INSTABILITY AND FAVORABLE SHEAR...SUPERCELLS
ARE LIKELY WITH VERY LARGE HAIL...DAMAGING WINDS AND ISOLATED
TORNADOES. THE GREATEST THREAT OF SEVERE WEATHER IS MAINLY ALONG AND
NORTH OF INTERSTATE 70.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

ADDITIONAL THUNDERSTORMS ARE LIKELY FRIDAY AFTERNOON AS A COLD FRONT
FINALLY PUSHES THROUGH THE AREA. STRONG INSTABILITY AND FAVORABLE
SHEAR WILL ONCE AGAIN SUPPORT A FEW SEVERE THUNDERSTORMS WITH LARGE
HAIL AND DAMAGING WINDS POSSIBLE FOR AREAS GENERALLY ALONG AND SOUTHEAST
OF A PRINCETON TO KANSAS CITY LINE. THE SEVERE THREAT MAY BE PUSHED
FURTHER SOUTHEAST IF THE COLD FRONT MOVES QUICKER THAN CURRENTLY
ANTICIPATED

THUNDERSTORMS ARE POSSIBLE AGAIN FROM LATE SATURDAY THROUGH
WEDNESDAY. SEVERE THUNDERSTORMS ARE POSSIBLE THROUGH THIS PERIOD
ALTHOUGH THERE IS TOO MUCH UNCERTAINTY TO HIGHLIGHT A SPECIFIC
PERIOD.

DUE TO THE POTENTIAL FOR SEVERAL ROUNDS OF THUNDERSTORMS AND CELLS
MOVING REPEATEDLY OVER THE SAME LOCATIONS...HEAVY RAINFALL COULD
LEAD TO AREAS OF FLOODING...AND COULD EXACERBATE THE ONGOING
MISSOURI RIVER FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED THIS EVENING AND EARLY TONIGHT...MAINLY
ALONG AND NORTH OF INTERSTATE 70.

DB

In the hours before

Local storm report, Jun 9, 9:59 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
959 PM CDT THU JUN 09 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0956 PM     FLASH FLOOD      3 SW TRENTON            40.05N 93.64W
06/09/2011                   GRUNDY             MO   AMATEUR RADIO

            1-2 FEET OF WATER OVER THE ROAD ON ROUTE W SOUTHWEST OF
            TRENTON AT THE WOLF CREEK

&&

BAILEY

Local storm report, Jun 9, 10:02 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1002 PM CDT THU JUN 09 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0908 PM     HAIL             MARCELINE               39.74N 92.47W
06/09/2011  E0.75 INCH       MACON              MO   LAW ENFORCEMENT

&&

SFORTIN

Special weather statement, Jun 9, 10:02 PM CDT, 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1002 PM CDT THU JUN 9 2011

MOZ001>004-011-100345-
ATCHISON MO-GENTRY MO-HOLT MO-NODAWAY MO-WORTH MO-
1002 PM CDT THU JUN 9 2011

...SIGNIFICANT WEATHER ADVISORY FOR ATCHISON...WORTH...NODAWAY...
NORTHERN HOLT AND NORTHWESTERN GENTRY COUNTIES UNTIL 1045 PM CDT...

AT 959 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM TARKIO TO 8 MILES
EAST OF FAIRFAX TO MOUND CITY...AND MOVING NORTHEAST AT 55 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THESE STORMS.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  TARKIO...MARYVILLE...MAITLAND...SKIDMORE...BURLINGTON JUNCTION...
  RAVENWOOD...HOPKINS...GRANT CITY...GRAHAM...QUITMAN...WESTBORO...
  ELMO...ARKOE...CLEARMONT...PICKERING...PARNELL...SHERIDAN AND
  WORTH.

THIS WILL IMPACT

 I-29 BETWEEN MILE MARKERS 80 AND 117.

THESE STORMS MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4058 9432 4043 9427 4006 9524 4039 9565
      4045 9565 4046 9568 4059 9541
TIME...MOT...LOC 0302Z 245DEG 46KT 4043 9538 4036 9520
          4018 9512

21

Local storm report, Jun 9, 10:03 PM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1003 PM CDT THU JUN 09 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0931 PM     HAIL             MARCELINE               39.72N 92.95W
06/09/2011  E0.75 INCH       LINN               MO   AMATEUR RADIO

&&

SFORTIN

Local storm report, Jun 9, 10:11 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1011 PM CDT THU JUN 09 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0930 PM     HAIL             BUCKLIN                 39.78N 92.89W
06/09/2011  E2.75 INCH       LINN               MO   TRAINED SPOTTER

&&

21

Special weather statement, Jun 9, 10:25 PM CDT, 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1025 PM CDT THU JUN 9 2011

KSZ057-060-MOZ043-053-100415-
BATES MO-CASS MO-LINN KS-MIAMI KS-
1025 PM CDT THU JUN 9 2011

...SIGNIFICANT WEATHER ADVISORY FOR LINN AND MIAMI COUNTIES IN EAST
CENTRAL KANSAS...AND WESTERN CASS AND BATES COUNTIES IN WEST CENTRAL
MISSOURI UNTIL 1115 PM CDT...

AT 1021 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
AN OUTFLOW BOUNDARY AHEAD OF AN AREA OF THUNDERSTORMS. THE LEADING
EDGE OF THIS OUTFLOW WAS ALONG A LINE EXTENDING FROM 6 MILES
SOUTHWEST OF SPRING HILL TO 5 MILES NORTH OF PLEASANTON TO 14 MILES
SOUTHWEST OF FULTON...AND MOVING EAST AT 35 MPH.

WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS OUTFLOW BOUNDARY.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  LOUISBURG...ADRIAN...PECULIAR...BUTLER...RICH HILL...
  HARRISONVILLE...PRESCOTT...DREXEL...HUME...CLEVELAND...FREEMAN...
  ARCHIE...NEW LANCASTER...WAGSTAFF...CHILES...AMORET...AMSTERDAM...
  WORLAND...MERWIN AND BUCYRUS.

LAT...LON 3803 9508 3826 9508 3826 9507 3872 9506
      3874 9470 3874 9461 3875 9461 3876 9432
      3837 9418 3805 9429 3806 9461 3803 9462
TIME...MOT...LOC 0325Z 255DEG 30KT 3870 9488 3825 9470
          3786 9484

21

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:00 PM CDT	Severe Thunderstorm Warning	EAX	Macon	30 min
Jun 9, 7:05 PM CDT	Severe Thunderstorm Warning	EAX	Linn, Sullivan	25 min
Jun 9, 7:07 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Daviess, DeKalb	23 min
Jun 9, 7:20 PM CDT	Areal Flood Advisory	EAX	Sullivan	6 hr
Jun 9, 7:26 PM CDT	Severe Thunderstorm Warning	EAX	Linn	34 min
Jun 9, 7:28 PM CDT	Severe Thunderstorm Warning	EAX	Sullivan	32 min
Jun 9, 7:28 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Harrison	32 min
Jun 9, 7:42 PM CDT	Areal Flood Advisory	EAX	Daviess	6 hr
Jun 9, 7:55 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Livingston	35 min
Jun 9, 7:56 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Linn, Livingston	34 min
Jun 9, 8:04 PM CDT	Flash Flood Warning	EAX	Sullivan	6 hr
Jun 9, 8:12 PM CDT	Severe Thunderstorm Warning	EAX	Linn, Sullivan	33 min
Jun 9, 8:13 PM CDT	Flash Flood Warning	EAX	Daviess	4 hr
Jun 9, 8:20 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, Grundy, Livingston	25 min
Jun 9, 8:44 PM CDT	Severe Thunderstorm Warning	EAX	Grundy, Linn, Livingston	31 min
Jun 9, 8:47 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Linn, Macon	43 min
Jun 9, 9:14 PM CDT	Severe Thunderstorm Warning	EAX	Grundy, Linn, Livingston, Sullivan	46 min
Jun 9, 9:28 PM CDT	Severe Thunderstorm Warning	EAX	Linn, Macon	47 min
Jun 9, 9:29 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt	31 min
Jun 9, 9:37 PM CDT	Flash Flood Warning	EAX	Adair, Linn, Macon, Sullivan	6 hr
Jun 9, 9:43 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt	18 min
Jun 9, 9:58 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Linn, Macon, Sullivan	32 min
Jun 9, 10:02 PM CDT	Special Weather Statement	EAX	Atchison, Holt, Nodaway, Worth	43 min
Jun 9, 10:06 PM CDT	Flash Flood Warning	EAX	Grundy, Linn, Livingston	6 hr
Jun 9, 10:25 PM CDT	Special Weather Statement	EAX	Bates, Cass	50 min
Jun 9, 10:27 PM CDT	Severe Thunderstorm Warning	EAX	Nodaway	18 min
Jun 9, 11:24 PM CDT	High Wind Warning	EAX	Bates, Cass	3 hr
Jun 10, 12:31 AM CDT	Areal Flood Warning	EAX	Adair, Daviess, Grundy, Linn, Livingston, Macon and 1 more	10 hr
Jun 10, 8:20 AM CDT	Special Weather Statement	EAX	Buchanan	40 min
Jun 10, 8:43 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Linn, Livingston	17 hr
Jun 10, 8:43 AM CDT	River Flood Warning	EAX	Carroll, Chariton	36 hr
Jun 10, 6:13 PM CDT	Special Weather Statement	EAX	Pettis	47 min
Jun 10, 6:34 PM CDT	Severe Thunderstorm Warning	EAX	Pettis	41 min
Jun 10, 6:48 PM CDT	Special Weather Statement	EAX	Howard	42 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.