Flash Flood and Hail in Missouri, June 27, 2010

Name: Flash Flood and Hail in Missouri, June 27, 2010
Start: 2010-06-27T14:51
End: 2010-06-27T22:19
Location: Missouri

June 27, 2010 · NWS EAX · 4 events in 3 counties and zones

Several reports of severe weather were reported across the area, during the afternoon hours of June 27, 2010.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 4

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS EAX wrote it up.

Several reports of severe weather were reported across the area, during the afternoon hours of June 27, 2010.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Jun 27, 1:01 PM CST, 1 hour 50 minutes earlier.

Area forecast discussion, Jun 27, 1:01 PM CST, 1 hour 50 minutes before

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
201 PM CDT SUN JUN 27 2010

.DISCUSSION...

NEAR TERM (THROUGH TONIGHT)...

UPPER LEVEL SHORT WAVE TROUGH DIVING INTO THE NORTHERN TIER OF THE
COUNTRY THIS AFTERNOON WITH ASSOCIATED SFC COLD FRONT NOW BISECTING
THE CWA. EMBEDDED SHORT WAVE TROUGH WITHIN OVERALL WESTERLIES
CURRENTLY SLIDING ACROSS CENTRAL INTO EASTERN KANSAS. MID LEVEL CLOUD
COVER ALONG WITH SCATTERED LIGHT SHOWERS DEVELOPING AHEAD OF
AFOREMENTIONED SHORT WAVE TROUGH IN RESPONSE TO ASSOCIATED LARGER
SCALE ASCENT. AS SLIGHT COOLING ALOFT OVERSPREADS THE SFC
BOUNDARY...EXPECT MORE SFC BASED CONVECTION TO INITIATE THIS
AFTERNOON. WITH SFC BOUNDARY ALREADY THROUGH A UNIONVILLE TO KANSAS
CITY LINE...EXPECT BULK OF AFTERNOON CONVECTION TO REMAIN ACROSS THE
SOUTHERN AND EASTERN COUNTIES.

AHEAD OF THE BOUNDARY...SOUTHWESTERLY LLVL FLOW COUPLED WITH DEEP
BOUNDARY LAYER MIXING TO ABOUT H825 HAS ALLOWED TEMPERATURES TO WARM
INTO THE UPPER 80S TO NEAR 90 DEGREES THIS AFTERNOON. THIS COUPLED
WITH RICH LLVL MOISTURE...IE TDS IN THE LOWER TO MID 70S...HAS
RESULTED IN MLCAPE VALUES ON THE ORDER OF 2000-4000 J/KG.
HOWEVER...THE AREA REMAINS TO THE SOUTH OF STRONGER MID/UPPER LEVEL
WESTERLIES AND EVEN EMBEDDED SHORT WAVE TROUGH ACROSS KANSAS HAS ONLY
CONTRIBUTED TO ABOUT 20-30 KTS OF 0-6KM BULK SHEAR.
THEREFORE...EXPECTING ANY CONVECTION THAT DEVELOPS TO EXHIBIT PULSE
TO MULTICELL CHARACTERISTICS THROUGH THE AFTERNOON. IN
ADDITION...ROBUST UPDRAFT POTENTIAL WILL BE SOMEWHAT LIMITED DESPITE
AMPLE INSTABILITY GIVEN WEAK MID LEVEL LAPSE RATES. THEREFORE...THE
MAIN THREAT THROUGH THE AFTERNOON WILL BE LOCALIZED GUSTY WINDS WITH
THE STRONGER CONVECTION. PROBABILITIES FOR LARGE HAIL SHOULD ALSO
REMAIN FAIRLY LOW GIVEN FREEZING LEVELS OF 14-15KFT.

LATEST SHORT RANGE GUIDANCE SUGGESTS THE BULK OF ACTIVITY WILL MOVE
SOUTH AND EAST OF THE CWA SHORTLY AFTER 00Z. HAVE TAILORED POPS TO
REFLECT THIS TREND WITH DRYING CONDITIONS THROUGH THE REMAINDER OF
THE NIGHT.

DEROCHE

SHORT/MEDIUM RANGE (MON-SUN)...

WITH THE MID-LVL RIDGING AXIS BEGINNING TO ESTABLISH ITSELF OVER THE
HEART OF THE COUNTRY BY MONDAY...ITS HARD TO FIND MUCH REASON TO
MAKE CHANGES TO THE FCST THROUGH NEXT WEEKEND.  BY MONDAY...THE
PASSING COLD FRONT WILL HAVE PUSHED WELL SOUTH OF THE CWA...WITH
WEAK SFC HIGH PRESSURE DRIFTING SE.  TEMPS SHOULD CONTINUE TO WARM
NICELY GIVEN WARMER AIR REMAINING ALOFT AND FULL SUNSHINE.  THE MID
TO UPR 80S SHOULD BE PREVAILING.  BY MONDAY NIGHT A SECONDARY VERY
WEAK COLD FRONT WILL DRIFT THROUGH THE AREA FROM THE NORTH.  BEHIND
THIS COLD FRONT A MUCH LARGER AREA OF HIGH PRESSURE WILL SETTLE INTO
THE MID-SECTION OF THE UNITED STATES.  THIS WILL ALLOW NR NML TEMPS
AND COMFORTABLE DEW POINTS TO ADVECT INTO THE REGION THROUGH AT
LEAST FRIDAY.  ONLY POINT OF CONCERN WOULD BE THE POTENTIAL FOR A
BIT OF GROUND FOR EACH MORNING IN VALLEYS AS THE BOUNDARY LAYER
DECOUPLES AND SFC TEMPS FALL INTO THE LOWER 60S.

BY NEXT WEEKEND THE MID-LVL RIDGE SHOULD BEGIN TO SHIFT EWRD
SLIGHTLY...EXPOSING THE CWA TO A SLIGHTLY STRONGER FETCH OF SWLY
FLOW IN THE LOW-LVLS.  AS A RESULT...HAVE BUMPED READINGS INTO THE
LOWER 90S SAT/SUN.  MEDIUM RANGE FCST IS BASED HIGHLY ON THE
GEFS/ECMWF...WITH THE 06Z/12Z GFS/GEM A STRONG OUTLIER REGARDING THE
IMPACTS OF TS ALEX.  WILL DISREGARD THE GFS/GEM ATTM.

DUX

&&

.AVIATION...

SYNOPTIC COLD FRONT CURRENTLY NEARING THE KMKC TERMINAL...HAVING
ALREADY PASSED THROUGH KSTJ AND KMCI. SHORT WAVE TROUGH EMBEDDED
WITHIN OVERALL WESTERLIES MOVING ACROSS CENTRAL KANSAS ATTM. AS
FORCING FOR ASCENT INCREASES THIS AFTERNOON WITH THE ARRIVAL OF
AFOREMENTIONED TROUGH...SCATTERED SHOWERS AND THUNDERSTORMS ARE
EXPECTED TO DEVELOP ALONG THE SFC COLD FRONT. WITH FRONT CURRENTLY
MOVING THROUGH THE TERMINALS...LATEST THINKING IS THAT THUNDERSTORM
ACTIVITY WILL REMAIN SOUTH AND EAST OF THE TERMINALS THIS AFTERNOON.
OTHERWISE...WINDS WILL SHIFT AROUND TO THE NW AND PERSIST THROUGH
TONIGHT.

DEROCHE

&&

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

Hazardous weather outlook, Jun 27, 11:51 AM CST, 3 hours before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1251 PM CDT SUN JUN 27 2010

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-281800-
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-
1251 PM CDT SUN JUN 27 2010

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AS A FRONTAL
BOUNDARY SWEEPS SOUTHEAST THROUGH THE REGION. THE POTENTIAL FOR
SEVERE THUNDERSTORM ACTIVITY IS LOW AT THIS TIME...HOWEVER...CANNOT
RULE OUT A COUPLE OF STRONG STORMS CAPABLE OF PRODUCING LOCALIZED GUSTY
WINDS. THIS POTENTIAL WOULD BE MAINLY CONFINED TO AREAS ALONG AND
SOUTH OF A KIRKSVILLE MISSOURI TO PAOLA KANSAS LINE. THUNDERSTORM
ACTIVITY WILL LIKELY MOVE OUT OF THE OUTLOOK AREA BY THIS EVENING.

ADDITIONALLY...HEAVY RAIN WILL BE POSSIBLE WITH ANY OF OF TODAYS
ACTIVITY WHICH MIGHT LEAD TO SOME LOCAL FLOODING ISSUES.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

DEROCHE

In the hours before

Special weather statement, Jun 27, 1:21 PM CST, 1 hour 30 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
221 PM CDT SUN JUN 27 2010

MOZ016-017-024-025-272000-
ADAIR MO-LINN MO-MACON MO-SULLIVAN MO-
221 PM CDT SUN JUN 27 2010

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SULLIVAN...
NORTHWESTERN MACON AND LINN COUNTIES IN NORTH CENTRAL MISSOURI...AND
SOUTHWESTERN ADAIR COUNTY IN NORTHEAST MISSOURI UNTIL 300 PM CDT...

AT 218 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES EAST OF
BROWNING TO 8 MILES EAST OF LINNEUS TO LACLEDE...AND MOVING EAST AT
30 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  BROOKFIELD...BUCKLIN...WINIGAN...SAINT CATHERINE...NEW BOSTON...
  ETHEL...SOUTH GIFFORD AND ELMER.

THESE STORMS MAY INTENSIFY...SO 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.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

LAT...LON 4009 9254 3991 9262 3974 9279 3974 9333
      3991 9315 4009 9308
TIME...MOT...LOC 1920Z 270DEG 25KT 4000 9299 3991 9303
          3981 9313

ADOLPHSON

Special weather statement, Jun 27, 1:54 PM CST, 57 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
254 PM CDT SUN JUN 27 2010

MOZ024-025-032-272045-
CHARITON MO-LINN MO-MACON MO-
254 PM CDT SUN JUN 27 2010

...SIGNIFICANT WEATHER ADVISORY FOR MACON...EASTERN LINN AND
NORTHEASTERN CHARITON COUNTIES IN NORTH CENTRAL MISSOURI UNTIL 345 PM
CDT...

AT 251 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 15 MILES NORTHEAST
OF BUCKLIN TO 5 MILES NORTH OF BUCKLIN TO BROOKFIELD...AND MOVING
EAST AT 20 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  MARCELINE...BUCKLIN...CALLAO...ATLANTA...BEVIER...ETHEL...ELMER...
  NEW CAMBRIA AND WIEN.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

LAT...LON 3976 9249 3961 9265 3961 9270 3960 9271
      3971 9320 4004 9287 4004 9275 3997 9234
      3995 9233
TIME...MOT...LOC 1954Z 287DEG 17KT 3997 9276 3986 9288
          3975 9299

ADOLPHSON

Special weather statement, Jun 27, 2:11 PM CST, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
311 PM CDT SUN JUN 27 2010

MOZ037>039-043-044-272100-
CASS MO-JACKSON MO-JOHNSON MO-LAFAYETTE MO-SALINE MO-
311 PM CDT SUN JUN 27 2010

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SALINE COUNTY IN
CENTRAL MISSOURI...AND LAFAYETTE...SOUTHEASTERN JACKSON...JOHNSON AND
NORTHEASTERN CASS COUNTIES IN WEST CENTRAL MISSOURI UNTIL 400 PM
CDT...

AT 309 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM HIGGINSVILLE TO
ODESSA TO LONE JACK...AND MOVING EAST AT 15 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  HIGGINSVILLE...CONCORDIA...CORDER...ALMA...BLACKBURN...LAKE
  LAFAYETTE...PITTSVILLE...AULLVILLE...FAYETTEVILLE...EMMA...
  CENTERVIEW AND MOUNT LEONARD.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

LAT...LON 3911 9326 3891 9355 3872 9386 3881 9436
      3900 9405 3921 9377
TIME...MOT...LOC 2011Z 283DEG 15KT 3912 9373 3898 9393
          3885 9415

ADOLPHSON

Special weather statement, Jun 27, 2:25 PM CST, 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
325 PM CDT SUN JUN 27 2010

MOZ031-032-039-272115-
CARROLL MO-CHARITON MO-SALINE MO-
325 PM CDT SUN JUN 27 2010

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN CHARITON...EASTERN
CARROLL AND NORTHERN SALINE COUNTIES UNTIL 415 PM CDT...

AT 323 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES SOUTHWEST OF BOSWORTH...OR 6 MILES
NORTHEAST OF CARROLLTON...MOVING EAST AT 20 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  BOSWORTH...BRUNSWICK...WAKENDA...MIAMI...DE WITT...TRIPLETT AND
  DALTON.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

LAT...LON 3955 9298 3930 9297 3932 9351 3950 9351
TIME...MOT...LOC 2025Z 268DEG 16KT 3941 9339

ADOLPHSON

The radar

The Pleasant Hill radar (KEAX), 160 km away, was scanning. The volume nearest the first event began at 20:51 UTC.

Open the radar archive at this moment

Event by event

2 hail, 1 thunderstorm wind, 1 flash flood. Local standard time, as filed.

Hail, Linn

When: June 27, 2:51 PM CST
Where: Linn County, 0.53 mi E of Bucklin
Measured: 1 in hail
Reported by: Law Enforcement
Coordinates: 39.780, -92.890

Hail, Chariton

When: June 27, 2:55 PM CST
Where: Chariton County, 0.53 mi E of Triplett
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 39.500, -93.190

Thunderstorm Wind, Chariton

When: June 27, 3:18 PM CST
Where: Chariton County, 3.19 mi W of Wien
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 39.670, -92.860

Thunderstorm winds were estimated up to 60 mph.

Flash Flood, Macon

When: June 27, 4:19 PM CST to 10:19 PM CST
Where: Macon County, 3.61 mi SSW of Lingo to 3.5 mi SSW of Lingo
Cause: Heavy Rain
Reported by: Trained Spotter
Coordinates: 39.720, -92.850

Highway 129 was blocked due to 6 to 12 inches of water flowing over the road.

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Missouri in 2010 Every state in 2010 This day in weather history Warnings in Missouri, June 2010

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 244368, 244369, 244370, 244367.