A strong shortwave was moving through the region, which helped to trigger showers and thunderstorms. A few of the storms produced severe weather.
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.
A strong shortwave was moving through the region, which helped to trigger showers and thunderstorms. A few of the storms produced severe weather.
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 26, 2:32 PM CST, 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 332 PM CDT WED JUN 26 2013 .SHORT TERM...(THROUGH LATE TONIGHT) ISSUED AT 316 PM CDT WED JUN 26 2013 ISO-SCT TSRA HAVE DVLPD THIS AFTN ACROSS PARTS OF MO/IL ALONG AN OLD OUTFLOW BDRY WITH ADDITIONAL CONVECTION NOTED FARTHER NORTH IN IA WHICH WAS DVLPG ALONG A WIND SHIFT LINE AHEAD OF A WEAK CDFNT. SPC MESOANALYSIS GRAPHICS DEPICTED 1500-3000 J/KG OF MLCAPE AND ZERO MLCINH IN MO/IL NEAR THE OUTFLOW BDRY ALONG WITH A BROAD POCKET OF LOCALLY HIGHER SHEAR VALUES. ALTHOUGH THUNDERSTORMS ACROSS THE LSX CWA ARE GENERALLY EXPECTED TO DECREASE IN COVERAGE AFTER SUNSET...A FEW OF THE STORMS COULD STRENGTHEN AND PRODUCE GUSTY WINDS OR SMALL HAIL BEFORE CONVECTION BEGINS TO WANE LATER THIS EVENING. KANOFSKY .LONG TERM...(THURSDAY THROUGH NEXT WEDNESDAY) ISSUED AT 316 PM CDT WED JUN 26 2013 THU/THU NIGHT...A BDRY EXTENDING INTO MO FM A SFC LOW IN OK/KS WILL SERVE AS THE FOCUS FOR ADDITIONAL TSRA DVLPMT ON THU NIGHT. LOCAL WRF AND SREF DEPICT INCREASING H85 MCONV IN ERN KS/NWRN MO ALONG WITH SUFFICIENT INSTABILITY AND AROUND 40 KTS OF 0-6 KM BULK SHEAR WHICH WOULD BE SUFFICIENT FOR ORGANIZED CONVECTION. ONCE A COLD POOL DVLPS THEN THE MCS SHOULD MOVE SEWD BASED ON FCST CORFIDI VECTORS. THE MAIN QUESTION REGARDING PCPN CHCS FOR LATE THU NIGHT/EARLY FRI MORNING IS HOW FAR EAST THE MCS WILL EXTEND AND THIS WILL PROBABLY DEPEND ON WHERE THE STORMS INITIATE. FOR NOW WILL KEEP THE HIGHEST POPS OVER THE SWRN HALF OF THE CWA. FRI THROUGH TUE...UPPER AIR PATTN OVER MO/IL WILL TRANSITION TO NW FLOW ALOFT BETWEEN A RIDGE OVER THE WRN CONUS AND A TROF OVER THE ERN CONUS. THIS PATTN SHIFT WILL BRING A PD OF COOLER AND DRIER WX TO THE AREA OVER THE WEEKEND...ESPECIALLY AFTER A SFC HIGH SETTLES INTO THE UPPER MIDWEST/WRN GRTLKS AND INDUCES SFC WINDS WITH A NLY COMPONENT. IN TERMS OF PCPN CHCS...MODELS AGREE ON THE PRESENCE OF A STRONG VORT MAX ZIPPING THROUGH THE LARGE SCALE FLOW ON SAT/SAT NIGHT. THIS FEATURE COULD SUPPORT SHRA/TSRA SOMEWHERE IN THE CENTRAL CONUS HOWEVER TIMING AND PLACEMENT DIFFERENCES PRECLUDE MORE THAN CHC POPS ATTM. THE NW FLOW PATTN IS EXPECTED TO PERSIST UNTIL A STRONG LOW PRESSURE SYSTEM MOVES ONSHORE OVER THE PACIFIC NW NEXT WEEK AND BEGINS TO BREAK DOWN THE WRN CONUS RIDGE. KANOFSKY && .AVIATION...(FOR THE 18Z TAFS THROUGH 18Z THURSDAY AFTERNOON) ISSUED AT 102 PM CDT WED JUN 26 2013 AN OUTFLOW BNDRY EXTENDING FROM A CONVECTIVE CLUSTER ALONG THE IL/IN BORDER TO JUST NORTH OF THE STL METRO AREA WILL BE THE FOCUS FOR ADDNTL SHRA/TSTM DVLPMNT THIS AFTN. CURRENT THINKING IS THAT MOST OF THE ACTIVITY SHOULD STAY EAST OF THE METRO AREA TERMINALS. OTHERWISE...EXPECT MORNING STRATUS TO LIFT AND BREAK UP WITH SKIES BECOMING CLEAR THIS EVENING. WINDS WILL REMAIN WESTERLY THRU THE PERIOD. ANOTHER CLUSTER OF CONVECTION MAY DVLP TONIGHT ACROSS ERN NEB AND WRN IA AND DROP SE WHICH MAY CAUSE AN INCREASE IN MID/HIGH LEVEL CLOUDINESS FOR KCOU AND POSSIBLE KUIN...DEPENDING HOW FAR EAST IT FORMS...TOWARDS THE END OF THE PERIOD. SPECIFICS FOR KSTL... DVLPNG SHRA/TSTMS ALONG AN OUTFLOW BNDRY TO THE EAST OF THE TERMINAL SHOULD REMAIN EAST THIS AFTN. OTHERWISE A VFR FCST WITH SKIES CLEARING OVERNIGHT AND WRLY WINDS AOB 10 KTS. 2% && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && WFO LSX
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 337 PM CDT WED JUN 26 2013 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-271200- 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- 337 PM CDT WED JUN 26 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT THUNDERSTORMS HAVE DEVELOPED THIS AFTERNOON ACROSS PARTS OF MISSOURI AND ILLINOIS. A FEW OF THE STORMS MAY BE STRONG ENOUGH TO PRODUCE GUSTY WINDS AND SMALL HAIL. THUNDERSTORMS WILL DISSIPATE THIS EVENING. HEAT INDEX VALUES WILL BE AROUND 100 DEGREES ACROSS PORTIONS OF THE AREA DURING THE LATE AFTERNOON AND EARLY EVENING HOURS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS A CHANCE OF THUNDERSTORMS ON THURSDAY NIGHT AND FRIDAY. THERE IS ALSO A CHANCE OF THUNDERSTORMS ON SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT ANY SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE. KANOFSKY
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1050 AM CDT WED JUN 26 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1048 AM HEAVY RAIN 7 ESE CLARENCE 39.70N 92.14W
06/26/2013 M5.50 INCH SHELBY MO PUBLIC
OVERNIGHT TOTAL FROM LENTNER...RELAYED VIA WGEM
&&
MILLERSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 312 PM CDT WED JUN 26 2013 ILZ069-070-262100- CLINTON IL-MARION IL- 312 PM CDT WED JUN 26 2013 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN CLINTON AND SOUTHERN MARION COUNTIES UNTIL 400 PM CDT... AT 309 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR SANDOVAL...OR 6 MILES NORTH OF CENTRALIA... MOVING EAST AT 25 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... SALEM... ODIN... OMEGA... HELM... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. IN ADDITION...THIS STORM 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. CARNEY
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
337 PM CDT WED JUN 26 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0337 PM HAIL SALEM 38.63N 88.95W
06/26/2013 E1.75 INCH MARION IL TRAINED SPOTTER
HAIL WAS MOSTLY HALF DOLLAR SIZED...WITH SOME AS LARGE
AS GOLFBALL
&&
JPPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
344 PM CDT WED JUN 26 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0342 PM FUNNEL CLOUD 2 SE ODIN 38.60N 89.03W
06/26/2013 MARION IL TRAINED SPOTTER
SPOTTER REPORTS STRONGLY ROTATING FUNNEL CLOUD. SPOTTER
IS SOUTHEAST OF ODIN LOOKING TOWARDS 161 AND INTERSTATE
57.
&&
KANOFSKYThe St Louis radar (KLSX), 10 km away, was scanning. The volume nearest the first event began at 20:58 UTC.
3 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds blew down numerous tree limbs and a couple of Bradford pear trees near Highway K and Winding Woods Drive. Also, a couple of fences sustained minor damage.
Thunderstorms winds caused a wide swath of wind damage across St. Peters. There were several large trees blown down as well as numerous large tree limbs. Also, several power lines were blown down. One large tree fell onto a house causing major damage. Another large tree fell onto the house causing minor damage. No injuries were reported.
Thunderstorm winds blew over a tree in House Springs.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2013Every state in 2013This day in weather historyWarnings in Missouri, June 2013
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: 466497, 466500, 466494.