An upper level disturbance moved through the region, triggering isolated showers and thunderstorms. Some of the storms produced damaging winds.
Every event with a place to put it. Tap one for its entry below.
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.
The episode as NWS LSX wrote it up.
An upper level disturbance moved through the region, triggering isolated showers and thunderstorms. Some of the storms produced damaging winds.
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 St. Louis, MO wrote its last area forecast discussion before the first event at Jun 16, 5:34 PM CST, 47 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED AVIATION NATIONAL WEATHER SERVICE ST LOUIS MO 634 PM CDT SAT JUN 16 2012 .SHORT TERM... ISSUED AT 338 PM CDT SAT JUN 16 2012 (TONIGHT) MAIN FOCUS TONIGHT WILL BE ON THE THREAT OF THUNDERSTORMS. THE COMBINATION OF GOOD HEATING TODAY AND DEEPER MOISTURE RESULTED IN VERY UNSTABLE CONDITIONS ACROSS MUCH OF THE CWA BY NOON. ISOLATED SHOWERS AND THUNDERSTORMS DEVELOPED ACROSS PARTS OF EASTERN MO INTO SOUTHWEST ILLINOIS AS AN EASTWARD PROPAGATING GRAVITY WAVE INTERACTED WITH THIS AIR MASS PROVIDING WEAK ASCENT. COVERAGE OF THESE STORMS HAS LARGELY DIMINISHED AS THE ASCENT HAS WEAKENED WITH THE PASSAGE OF THE WAVE AND ALSO IN RESPONSE TO LESSER INSTABILITY RESULTING FROM A MIXING IN THE DEEPENING BOUNDARY LAYER. THE ATTENTION FOR THE REMAINDER OF THE AFTERNOON AND TONIGHT WILL TURN TO THE REMNANT MCV NOW CENTERED IN NW MO AND APPROACHING COLD FRONT. ENHANCED MESOSCALE LIFT ASSOCIATED WITH THE MCV HAS PRODUCED A GOOD THUNDERSTORM CLUSTER ALONG THE SW IA/NW MO BORDER WITH MORE ISOLATED COVERAGE SOUTHWARD. THIS FEATURE IS FORECAST TO TRACK EASTWARD THIS EVENING AHEAD OF THE ENCROACHING COLD FRONT AND INTO NRN IL BY MIDNIGHT. LIFT ASSOCIATED WITH IT AND A VEERING SWLY LLJ OF 25-35 KTS IS EXPECTED TO PROVIDE CONTINUED SUPPORT FOR THUNDERSTORMS ACROSS NORTHERN MO INTO WEST CENTRAL IL THIS EVENING. THE MAIN QUESTION IS HOW FAR SOUTH THE THUNDERSTORMS WILL MOVE. VIRTUALLY ALL THE MODEL QPFS HAVE A GOOD SWATH OF MEASURABLE PRECIPITATION TRANSLATING SOUTHWARD THROUGH THE NIGHT TO AT LEAST I-70. THE CONVECTION ALLOWING MODELS AND ESPECIALLY RECENT RUNS OF THE HRRR SUGGEST THERE WILL BE ADDITIONAL CONVECTION DEVELOPING FROM THE AGITATED CU FIELD NOW EXTENDING FROM CHILLICOTHE TOWARDS EMPORIA KS AND THIS ALONG WITH THE CLUSTER FURTHER NORTH WILL ORGANIZE INTO A MCS THAT TRACKS SEWD. WHETHER IT IS A COMBINATION OF CONVECTION ASSOCIATED WITH THE MCV AND CONVECTIVE OUTFLOWS OR LIFT AHEAD OF THE FRONT ITSELF...IT IS HARD TO ARGUE AGAINST BRINGING LIKELY POPS DOWN TO AROUND I-70. GLASS && .LONG TERM... ISSUED AT 306 PM CDT SAT JUN 16 2012 (SUNDAY THROUGH SATURDAY) SUNDAY'S WEATHER WILL DEPEND HEAVILY ON HOW CONVECTION DEVELOPS AND MOVES TONIGHT AND HOW FAR SOUTH THE FRONT GETS ON SUNDAY. CURRENT THINKING IS THAT THE FRONT WILL WASH OUT NEAR OR JUST NORTH OF THE I-70 CORRIDOR. NAM/GFS/LOCAL WRF/SREF HAVE SOME EXTENT OF LINGERING PRECIP DURING THE MORNING HOURS DOWN ACROSS SOUTHEAST MISSOURI AND SOUTHERN ILLINOIS. THIS DOESN'T SEEM UNREASONABLE GIVEN THE REMAINING SHORTWAVE ENERGY RIPPLING ALONG ALOFT DURING THE MORNING AND THE RESIDUAL MOISTURE CONVERGENCE ON THE LOW LEVEL JET. HOWEVER DISCRETE CONVECTIVE MODELS SUCH AS THE HRRR AND 4KM NCEP WRF LOOK PRETTY DRY AFTER THE MCS LOSES STEAM LATE TONIGHT...THEN THE 4KM WRF FIRES PRECIP DOWN OVER THE OZARKS DURING THE LATE AFTERNOON. REGARDLESS...THINK THE BEST I CAN DO IS CHANCE POPS FOR SUNDAY...UNSURE OF TIMING OR COVERAGE...BUT THERE IS CERTAINLY THE POTENTIAL FOR PRECIP. SUNDAY NIGHT THE LOW LEVEL JET RAMPS UP AND THE FRONT MOVES BACK NORTH. MODELS ARE SHOWING LIGHT QPF ON THE NOSE OF THE WARM AIR ON AN AREA OF DECENT 850MB MOISTURE CONVERGENCE OVER NORTHEAST MO/WEST CENTRAL IL DURING THE EVENING...SO HAVE BUMPED UP TO CHANCE IN THOSE AREAS. CONTINUING HOT AND DRY FORECAST FOR MONDAY AT LEAST THROUGH WEDNESDAY. STRONG UPPER LEVEL HIGH BUILDS BACK INTO THE TENNESSEE VALLEY WHICH SHOULD KEEP US STUCK IN SOUTHWEST FLOW. LOW TO MID 90S DURING THE DAY AND LOW TO MID 70S AT NIGHT. SHOULD FEEL LIKE SUMMER. MEDIUM RANGE MODELS ARE ADVERTISING A PATTERN SHIFT TOWARD THE END OF THE WEEK WITH THE RIDGE TO OUR EAST BREAKING DOWN AND A FROPA LATE THURSDAY OR FRIDAY. SHOULD BRING US COOLER TEMPERATURES INTO NEXT WEEKEND AND A CHANCE FOR RAIN THURSDAY NIGHT AND FRIDAY. CARNEY && .AVIATION... ISSUED AT 635 PM CDT SAT JUN 16 2012 A SWATH OF LOOSELY ORGANIZED THUNDERSTORMS HAS DEVELOPED THROUGH THE AFTERNOON AND STRETCHED FROM NORTHEAST MISSOURI TO JUST WEST OF COLUMBIA TO SEDALIA AT TAF ISSUANCE TIME. OVERALL THE CONSENSUS OF THE GUIDANCE IS THAT THIS SYSTEM WILL MOVE EAST THROUGH THE EVENING CONTAINING EMBEDDED STRONGER CELLS. THE MOST INTENSE STORMS SHOULD DROP VSBYS BLO 3SM WITH CIGS BLO 3000 FT AND WILL HAVE SOME GUSTY WINDS. SHOWERS AND THUNDERSTORMS WILL POTENTIALLY IMPACT KUIN THROUGH 02-03Z AND KCOU THROUGH 03-04Z. IF THIS ACTIVITY CAN MAINTAIN ITS CURRENT STATUS IT SHOULD MOVE INTO THE ST LOUIS AREA IN THE 03-04Z TIME FRAME BUT THERE IS SOME UNCERTAINTY IN THE TIMING...COVERAGE AND INTENSITY BY THIS TIME. THE NEW TAF HAS THE POTENTIAL FOR STORMS IN THE ST LOUIS AREA EARLIER THAN PREVIOUSLY BUT IS CONSERVATIVE ON THE INTENSITY. ALL OF THIS ACTIVITY COULD DROP SOUTH/SOUTHEAST OF ST LOUIS BY 06-07Z WITH DRY CONDITIONS AND VFR THEREAFTER. WINDS ARE SOMEWHAT PROBLEMATIC WITH A GENERAL SHIFT TO MORE WESTERLY AFTER THE PASSAGE OF THE STORMS AND THEIR BOUNDARY. A COLD FRONT WELL TO THE NORTH IS EXPECTED TO MOVE THROUGH KUIN OVERNIGHT AND STALL THEN LIFT BACK NORTHWARD ON SUNDAY MORNING. A MIX OF SCATTERED-BROKEN CU AND SOME MID/HI CLOUDS ARE EXPECTED ON SUNDAY...WHILE PRECIPITATION PROBABILITY AT ANY TAF SITE IS TOO LOW TO MENTION. SPECIFICS FOR KSTL... WATCHING LOOSELY ORGANIZED SWATH OF THUNDERSTORMS EXTENDING FROM NORTHEAST MISSOURI INTO WEST CENTRAL MO. IF THIS ACTIVITY CAN MAINTAIN ITS CURRENT STATUS IT SHOULD COULD IMPACT THE TERMINAL IN THE 03-04Z TIME FRAME BUT THERE IS SOME UNCERTAINTY IN THE TIMING...COVERAGE AND INTENSITY BY THIS TIME. THE NEW TAF HAS THE POTENTIAL FOR STORMS EARLIER THAN PREVIOUSLY BUT IS CONSERVATIVE ON THE INTENSITY. ALL OF THIS ACTIVITY COULD DROP SOUTH/SOUTHEAST OF ST LOUIS BY 06-07Z WITH DRY CONDITIONS AND VFR THEREAFTER. WINDS ARE SOMEWHAT PROBLEMATIC WITH A GENERAL SHIFT TO MORE WESTERLY AFTER THE PASSAGE OF THE STORMS AND THEIR BOUNDARY. A MIX OF SCATTERED-BROKEN CU AND SOME MID/HI CLOUDS ARE EXPECTED ON SUNDAY...WHILE PRECIPITATION PROBABILITY AT ANY TAF SITE IS TOO LOW TO MENTION. GLASS && .PRELIMINARY POINT TEMPS/POPS... ST LOUIS 72 88 73 95 / 60 40 30 5 QUINCY 68 87 70 93 / 70 30 30 5 COLUMBIA 69 89 70 93 / 70 40 20 5 JEFFERSON CITY 70 90 71 93 / 60 40 10 5 SALEM 71 86 71 92 / 50 50 20 5 FARMINGTON 70 88 68 91 / 40 40 10 5 && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && WFO LSX
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 334 PM CDT SAT JUN 16 2012 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-171200- GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL- MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL- CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX MO- LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-ST. CHARLES MO-FRANKLIN MO- ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO- WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO- MADISON MO-REYNOLDS MO- 334 PM CDT SAT JUN 16 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT THUNDERSTORMS ARE LIKELY ACROSS PARTS OF THE AREA TONIGHT. SOME STORMS MAY BE SEVERE WITH DAMAGING WINDS BEING THE PRIMARY THREAT. SOME LARGE HAIL MAY ALSO BE POSSIBLE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE CHANCE FOR THUNDERSTORMS WILL CONTINUE INTO SUNDAY...WITH STRONG STORMS POSSIBLE...CAPABLE OF SMALL HAIL AND STRONG GUSTY WINDS. THE CHANCE FOR THUNDERSTORMS WILL RETURN FOR THE PERIOD FROM THURSDAY THROUGH FRIDAY AS A COLD FRONT SLOWLY MOVES THROUGH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TONIGHT. CARNEY
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 539 PM CDT SAT JUN 16 2012 MOZ041-042-050-162330- AUDRAIN MO-BOONE MO-CALLAWAY MO- 539 PM CDT SAT JUN 16 2012 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL AUDRAIN...NORTHERN CALLAWAY AND NORTHERN BOONE COUNTIES UNTIL 630 PM CDT... AT 537 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES NORTH OF COLUMBIA...MOVING EAST AT 50 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... CENTRALIA... HALLSVILLE... MURRY... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. IN ADDITION...THIS STORM 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. 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. PHILLIPSON
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 606 PM CDT SAT JUN 16 2012 MOZ041-042-162345- AUDRAIN MO-BOONE MO- 606 PM CDT SAT JUN 16 2012 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN AUDRAIN AND NORTHERN BOONE COUNTIES UNTIL 645 PM CDT... AT 603 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10 MILES SOUTHWEST OF STURGEON...OR 13 MILES EAST OF FAYETTE...MOVING EAST AT 40 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... CENTRALIA... STURGEON... HALLSVILLE... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. IN ADDITION...THIS STORM 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. 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. PHILLIPSON
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
612 PM CDT SAT JUN 16 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0605 PM HAIL HARRISBURG 39.14N 92.46W
06/16/2012 E0.25 INCH BOONE MO TRAINED SPOTTER
&&
MILLERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
631 PM CDT SAT JUN 16 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0629 PM HAIL 6 E HARRISBURG 39.14N 92.35W
06/16/2012 E0.70 INCH BOONE MO TRAINED SPOTTER
&&
MILLERSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 631 PM CDT SAT JUN 16 2012 ILZ097-098-MOZ036-170015- CALHOUN IL-PIKE MO-PIKE IL- 631 PM CDT SAT JUN 16 2012 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CALHOUN COUNTY IN SOUTHWEST ILLINOIS...AND SOUTHERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...AND EASTERN PIKE COUNTY IN NORTHEAST MISSOURI UNTIL 715 PM CDT... AT 629 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR EOLIA...OR 11 MILES SOUTH OF LOUISIANA... MOVING NORTHEAST AT 45 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... CLARKSVILLE... PLEASANT HILL... BELLEVIEW... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. IN ADDITION...THIS STORM 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. 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. PHILLIPSON
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
634 PM CDT SAT JUN 16 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0620 PM HAIL 4 SE HARRISBURG 39.10N 92.41W
06/16/2012 E0.25 INCH BOONE MO TRAINED SPOTTER
EST 40 TO 45 MPH GUST
&&
MILLERThe St Louis radar (KLSX), 149 km away, was scanning. The volume nearest the first event began at 00:20 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds caused isolated damage on the west side of Columbia. A large tree fell onto a house causing roof damage. Also, a retractable awning on a nearby house was snapped in half.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2012Every state in 2012This day in weather historyWarnings in Missouri, June 2012
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: 395202.