A cold front moved south through the area, triggering showers and thunderstorms. A few of the storms produced severe weather and flash flooding.
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 cold front moved south through the area, triggering showers and thunderstorms. A few of the storms produced severe weather and flash flooding.
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 Jul 28, 11:44 AM CST, 3 hours 31 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED AVIATION NATIONAL WEATHER SERVICE ST LOUIS MO 1244 PM CDT TUE JUL 28 2009 .DISCUSSION... /431 AM CDT TUE JUL 28 2009/ SCT CONVECTION CONTS TO MOVE EWD THRU THE NRN PTN OF THE CWA EARLY THIS MRNG. THIS ACTIVITY IS JUST S OF A CDFNT EXTDG FM WI SW THRU SERN NEBRASKA. THE OTHER AREA OF CONVECTION IS ACRS AR AHD OF SLOW MOVG VORT MAX OF MCV. THE CONVECTION ACRS NRN MO SHOULD SHIFT SEWD TDA AS THE CDFNT MOVES SLOWLY SEWD THRU THE CWA. WILL FCST MAX TEMPS BLW PERSISTENCE TDA DUE TO FCSTD CLOUD CVR AND RAINFALL. THE BEST THREAT OF TSRA WILL SHIFT INTO THE SRN AND ERN PTNS OF THE CWA TGT AS THE CDFNT WILL EXTD FM SERN MI SW THRU SERN MO BY 12Z WED...AS A SFC RDG BLDS INTO NWRN MO WITH SLIGHTLY COOLER AND LESS HUMID AIR. WED APRS TO BE MAINLY DRY WITH CONVECTION RETURNING TO AT LEAST THE WRN AND SRN PTN OF THE CWA WED NGT AS THE NAM MDL BRINGS A WK SHRTWV EWD INTO NRN MO...WITH INCRSG 850 MB WAA...THETA E ADVCTN AND MOISTURE CNVG ON THE NOSE OF A SWLY LLJ WHICH WILL BE AIMED AT THE STL AREA BY 12Z THU. PREFER THE NAM AND ECMWF MDLS ON WED NGT AND THU AS THE GFS MDL HAS FEEDBACK PROBLEMS DURING THIS TIME PD. INCRSD POPS ON THU AS THE MDLS BRING A MID-UPR LVL TROF EWD THRU THE NRN PLAINS WHICH SENDS A RELATIVELY STG CDFNT FOR LT JULY SEWD THRU THE CWA. THE NAM MDL INCRS UPR LVL DIVERGENCE ACRS THE CWA THU MRNG AHD OF THE UPR LVL TROF AND INTENSIFYING ULJ STREAK MOVG THRU THE BASE OF THE TROF. THERE ALSO MAY BE A SFC WV OR LOW OVER THE CWA ALONG THIS CDFNT WHICH WILL ENHANCE LOW LVL CNVG. THERE SHOULD BE SOME LINGERING SHRA/TSRA OVER THE SERN PTN OF THE CWA THU EVNG BUT THIS SHOULD SHIFT WELL SE OF THE CWA BY LT THU NGT WITH LOW LVL CAA OVER THE ENTR CWA ALONG WITH LESS HUMID AIR WHICH SHOULD LEAD TO UNSEASONABLY COOL MIN TEMPS FRI MRNG. FRI AND FRI NGT WILL BE DRY WITH A SFC RDG OVER THE AREA. GKS && .AVIATION... /1240 PM CDT TUE JUL 28 2009/ FOR THE 18Z TAFS...SHORTWAVE TROF OVER KS/NE WILL INTERACT WITH SEWD MOVING CDFNT AND ADDITIONAL BDRY OVER SWRN MO TO PRODUCE NUMEROUS SCT SHRA/TSRA THIS AFTN AND EVENING. USED SREF GUIDANCE TO TIME WIND SHIFT AT TAF SITES AS IT SEEMS TO HAVE A REASONABLE HANDLE ON FROPA. WINDS WILL SHIFT TO THE NW BEHIND THE FRONT BUT GENERALLY STAY LIGHT THROUGH THE PD. KANOFSKY && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && WFO LSX
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 402 PM CDT TUE JUL 28 2009 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-291200- 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-LEWIS- SHELBY-MARION-MONROE-RALLS-PIKE-BOONE-AUDRAIN-MONITEAU-COLE-OSAGE- CALLAWAY-MONTGOMERY-LINCOLN-GASCONADE-WARREN-ST. CHARLES-FRANKLIN- ST. LOUIS-ST. LOUIS CITY-JEFFERSON-CRAWFORD-WASHINGTON- ST. FRANCOIS-STE. GENEVIEVE-IRON-MADISON-REYNOLDS- 402 PM CDT TUE JUL 28 2009 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 TONIGHT. WHILE ORGANIZED OR WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...THERE MAY BE ISOLATED STRONG OR SEVERE THUNDERSTORMS. SOME OF THESE THUNDERSTORMS MAY ALSO PRODUCE LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE CHANCE OF THUNDERSTORMS WILL CONTINUE WEDNESDAY AND WEDNESDAY NIGHT...MAINLY ACROSS SOUTHEASTERN MISSOURI AND SOUTHWESTERN ILLINOIS. THUNDERSTORMS ARE LIKELY ACROSS THE REGION THURSDAY AS ANOTHER COLD FRONT MOVES THROUGH THE AREA. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT OBSERVED HAIL...WIND DAMAGE OR FLOODING. && FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1 TILLY
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 141 PM CDT TUE JUL 28 2009 MOZ036-281930- PIKE MO- 141 PM CDT TUE JUL 28 2009 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN PIKE COUNTY IN NORTHEAST MISSOURI UNTIL 230 PM CDT... AT 139 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR EOLIA...OR 11 MILES NORTHWEST OF ELSBERRY... MOVING NORTHEAST AT 5 MPH. BRIEF HEAVY DOWNPOURS...PEA SIZE HAIL...AND WIND GUSTS UP TO 35 MPH ARE POSSIBLE WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... CLARKSVILLE... PAYNESVILLE... ANNADA... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. KANOFSKY
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 148 PM CDT TUE JUL 28 2009 ILZ098-MOZ061-281930- CALHOUN IL-ST. CHARLES MO- 148 PM CDT TUE JUL 28 2009 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ST. CHARLES AND SOUTHERN CALHOUN COUNTIES UNTIL 230 PM CDT... AT 147 PM CDT...NATIONAL WEATHER SERVICE PERSONNEL REPORTED A STRONG THUNDERSTORM NEAR OFALLON...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... ST. PETERS... ST. CHARLES... HARVESTER... ORCHARD FARMS... GOLDEN EAGLE... BRUSSELS... KAMPVILLE... DEER PLAIN... TILLY
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
152 PM CDT TUE JUL 28 2009
..TIME.. ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE.. ....MAG.... ..COUNTY LOCATION.. ST.. ...SOURCE....
..REMARKS..
0145 PM HAIL 1 S OFALLON 38.77N 90.71W
07/28/2009 E0.70 INCH ST. CHARLES MO NWS EMPLOYEE
&&
EVENT NUMBER LSX0902548
TILLYPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
238 PM CDT TUE JUL 28 2009
..TIME.. ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE.. ....MAG.... ..COUNTY LOCATION.. ST.. ...SOURCE....
..REMARKS..
0220 PM HAIL PAYNESVILLE 39.26N 90.90W
07/28/2009 M0.70 INCH PIKE MO PUBLIC
&&
EVENT NUMBER LSX0900037
PRZYBYLINSKIPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
239 PM CDT TUE JUL 28 2009
..TIME.. ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE.. ....MAG.... ..COUNTY LOCATION.. ST.. ...SOURCE....
..REMARKS..
0238 PM HAIL ANNADA 39.26N 90.83W
07/28/2009 M0.25 INCH PIKE MO PUBLIC
&&
EVENT NUMBER LSX0900038
PRZYBYLINSKIPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
338 PM CDT TUE JUL 28 2009
..TIME.. ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE.. ....MAG.... ..COUNTY LOCATION.. ST.. ...SOURCE....
..REMARKS..
0325 PM TSTM WND DMG FLORISSANT 38.80N 90.32W
07/28/2009 ST. LOUIS MO TRAINED SPOTTER
SMALL TREE BRANCHES DOWN NEAR SHACKELFORD RD AND
WIETHAUPT R
&&
EVENT NUMBER LSX0900039
SCHWEDLERThe Pleasant Hill radar (KEAX), 150 km away, was scanning. The volume nearest the first event began at 21:13 UTC.
2 flash flood, 1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds snapped off tops of a few large trees. Also, some siding was blown off of a house.
Up to 5 inches of rain fell in a short amount of time causing flash flooding on numerous roads. About 6 to 8 inches of water was flowing over Strawberry Road near Allee Road. Also, Highway C west of High Point was completely covered with water between the north and south branches of Highway CC. Several streams were flooded south southwest of McGirk.
Between 2 and 5 inches of rain has fallen in a short amount of time causing flash flooding. Highway 19 both north and south of Interstate 70 had water covering it. Also, Booneslick Road and Coal Chute Road near High Hill and Sunbeam Road north of New Florence were flooded for a time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2009Every state in 2009This day in weather historyWarnings in Missouri, July 2009
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: 188528, 188525, 188534.