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, 12:17 PM CST, 2 hours 12 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE ST LOUIS MO 117 PM CDT WED JUN 26 2013 .UPDATE... ISSUED AT 102 PM CDT WED JUN 26 2013 THE SHORT WAVE IS ALIGNED FROM NEAR MILWAUKEE TO THE MO BOOTHEEL. THAT PUTS MOST OF THE CWA IN SUBSIDENCE WITH THE EXCEPTION OF AREAS EAST AND SOUTH OF THE THE STL METRO. AN MCV FROM OVERNIGHT CONVECTION CONTINUES TO SLIDE SE FROM ERN IL TO WRN IN. AN OUTFLOW BNDRY EXTENDS WEST OF THIS COMPLEX FROM FAYETTE COUNTY NW INTO SE IA. SHRA/TSTMS ARE BEGINNING TO DVLP ALONG THIS BNDRY AS OF 18Z. THIS ACTIVITY SHOULD CONTINUE SE THRU THE AFTN AND SHOULD BE OUT OF THE CWA BY 22Z OR 23Z. HAVE TRIED TO REFINE POPS TO REFLECT GOING TRENDS. HIGH TEMPS STILL LOOK REASONABLE FOR MOST AREAS EXCEPT ALONG THE BORDER WITH ILX WHERE MORNING CLOUDS AND PRECIP HAVE KEPT TEMPS IN CHECK. CLOUDS SHOULD BEGIN TO THIN IN THESE AREAS SO WILL GIVE THEM ANOTHER HOUR BEFORE MAKING THE DECISION TO CUT BACK. 2% && .SHORT TERM...(THROUGH TONIGHT) ISSUED AT 311 AM CDT WED JUN 26 2013 FOCUS FOR THIS PERIOD WILL BE TSRA/SVR CHANCES. POPS FOR TODAY AND SVR THREAT WILL LARGELY BE DETERMINED BY WHAT ONGOING TSRA DOES THRU SUNRISE. CURRENT THINKING IS THAT CLUSTER OF TSRA OVER N CENTRAL MO WILL BEGIN TO BOW OVER ERN MO INTO W CENTRAL AND SW IL THIS MORNING AND CONTINUE TO MOVE ESE ALONG RESIDUAL OUTFLOW. LATER THIS MORNING...SFC LOW CURRENTLY OVER FAR NWRN MO WILL MOVE EWD AND TRAVEL SEWD IN CENTRAL IL LATER TODAY. WITH THE CWA REMAINING IN THE WARM SECTOR TODAY...WUD EXPECT ANOTHER ROUND OF TSRA DURING THE LATE MORNING OR AFTERNOON HOURS AS THE SFC LOW MOVES THRU THE REGION. AS FOR IF THE SECOND ROUND WILL BE SVR...IF IT DEVELOPS...IS STILL UNCERTAIN. BEST CHANCES FOR TSRA WILL BE ALONG/NEAR WHATEVER OUTFLOW BOUNDARY THE ONGOING CONVECTION LEAVES BEHIND. ATTM...IS DIFFICULT TO TELL WHERE EXACTLY THAT WILL BE. REGARDLESS...BELIEVE THE UPPER TROF WILL BE MOVING INTO THE OHIO VALLEY BY 00Z THIS EVENING AND SHUD LIMIT ANY TSRA OVER THE CWA. BOTTOM LINE FOR POPS TODAY...STAY TUNED FOR FURTHER UPDATES. AS FOR TEMPS...HAVE BEEN FORECASTING TEMPS TOO WARM BY A COUPLE OF DEGREES FOR THE PAST COUPLE OF DAYS AND HAVE FINALLY GIVEN IN TO THE MOS GUIDANCE AND COOLED TEMPS A BIT FOR TODAY. TRENDED COOLER ACROSS THE ERN COUNTIES WHERE CLOUD COVER SHUD LINGER LONGER TODAY. TILLY .LONG TERM...(THURSDAY THROUGH TUESDAY) ISSUED AT 401 AM CDT WED JUN 26 2013 MDLS SUGGEST TSRA DEVELOPING OVER ERN NEB DURING THE DAY THURS WITH A S/W EMBEDDED WITHIN NW FLOW. THIS S/W MAY GENERATE TSRA AS FAR E AS NRN PORTIONS OF THE CWA BY LATE THURS AFTERNOON. THIS ACTIVITY SHUD CONTINUE INTO THURS NIGHT AS THE SYSTEM DROPS SSEWD. SOME UNCERTAINTY REMAINS WITH THIS SYSTEM AND HOW FAR E TSRA WILL DEVELOP AND HAVE THEREFORE KEPT POPS SOMEWHAT LOW ATTM. NOT MANY CHANGES TO TEMPS FROM THE PREV FORECAST...BUT TEMPS SHUD SLOWLY COOL INTO THE WEEKEND. FOR THE EXTD...MDLS CONTINUE TO DISAGREE WITH DEVELOPMENT OF UPPER LOW THIS WEEKEND AND INTO NEXT WEEK. OVERALL...HAVE KEPT TEMPS TRENDING COOLER AND KEPT POPS LOW EXCEPT WHERE MDLS ARE IN GENERALLY GOOD AGREEMENT. TILLY && .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 718 AM 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- 718 AM 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...TODAY AND TONIGHT THUNDERSTORMS ARE EXPECTED THIS AFTERNOON IN AN ARC FROM NORTHEAST MISSOURI INTO SOUTHWEST ILLINOIS. THESE STORMS MAY LAST A COUPLE OF HOURS INTO THIS EVENING BEFORE DISSIPATING. THE GREATEST THREAT WILL BE HAIL AND GUSTY WINDS. HEAT INDEX VALUES WILL BE AROUND 100 DEGREES THIS AFTERNOON ACROSS PORTIONS OF THE AREA. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS ALSO A CHANCE OF THUNDERSTORMS THURSDAY NIGHT AND FRIDAY...AND AGAIN ON SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT ANY SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE. TILLY
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
The Evansville,IN radar (KVWX), 124 km away, was scanning. The volume nearest the first event began at 20:28 UTC.
3 thunderstorm wind, 1 hail. Local standard time, as filed.
Thunderstorm winds blew over a large tree. It landed on an unoccupied car causing major damage.
Thunderstorm winds blew down a couple of large trees and a few power lines.
Thunderstorm winds snapped off a three foot diameter tree at its base along Bluff Road north of Valmeyer.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2013Every state in 2013This day in weather historyWarnings in Illinois, 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: 466489, 466488, 466490, 466493.