The Mississippi River rose to major flood levels along the border of Lewis County. The river crested on April 21st, but remained in flood into May.
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.
The Mississippi River rose to major flood levels along the border of Lewis County. The river crested on April 21st, but remained in flood into May. Damage was limited to a few closed roads and agricultural lowlands.
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 Apr 18, 8:41 PM CST, 1 hour 21 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE ST LOUIS MO 941 PM CDT THU APR 18 2013 .UPDATE... ISSUED AT 917 PM CDT THU APR 18 2013 THE COLD FRONT HAS MOVED WELL E OF OUR FORECAST AREA THIS EVNG. THERE WAS STILL POST FRONTAL RAIN OCCURRING ACROSS PORTIONS OF SWRN IL...WITH A FEW PATCHES OF LIGHT RAIN OR SPRINKLES OCCURRING ACROSS PORTIONS OF W CNTRL IL AND E CNTRL MO. MOST OF THE PRECIPITATION SHOULD SHIFT E OF OUR AREA BY MIDNIGHT AS THE UPPER LEVEL DIVERGENCE AHEAD OF THE APPROACHING UPPER LEVEL TROUGH SHIFTS FURTHER E...AND THE LOW-MID LEVEL FRONTOGENESIS ALSO SHIFTS FURTHER E. A CLOUDY SKY SHOULD REMAIN FOR THE REST OF THE NIGHT AS LOW LEVEL MOISTURE AND CLOUDINESS CONTINUES TO ROTATE THROUGH OUR AREA S OF THE UPPER LEVEL/SFC LOW. RELATIVELY STRONG AND GUSTY WLY SFC WINDS WILL CONTINUE FOR THE REST OF THE NIGHT DUE TO THE TIGHT SFC PRESSURE GRADIENT BETWEEN THE SFC LOW OVER WI AND THE LARGE SFC RIDGE BUILDING SEWD INTO THE SRN PLAINS. UNSEASONABLY COLD CONDITIONS CAN BE EXPECTED TGT AS STRONG LOW LEVEL CAA CONTINUES BEHIND THE 850 MB TROUGH/SFC COLD FRONT WITH THE LATEST NAM MODEL FORECASTING THE 850 MB TEMPERATURES TO FALL TO AROUND -6 TO -7 DEGREES C ACROSS OUR FORECAST AREA BY 12Z FRI. GKS && .SHORT TERM...(THROUGH LATE TONIGHT) ISSUED AT 317 PM CDT THU APR 18 2013 AT 19Z/2PM...THE SFC CDFNT WAS LOCATED FROM NEAR KPPQ-ENTERING THE WRN SUBURBS OF STL METRO-NEAR KFYG-REYNOLDS COUNTY MO. THIS CDFNT HAS BEEN ACCOMPANIED BY A SUDDEN WIND SHIFT OUT OF THE W AND AN INCREASE IN WINDS TO GUSTS TO 30-35 MPH AS WELL AS A SHARP TEMP DROP INTO THE 40S WITHIN A HOUR OR TWO. A NARROW LINE OF CONVECTION HAS DEVELOPED ALONG THE FRONT BUT THE AIR IT IS MOVING THRU IS VERY WELL WORKED OVER AND DO NOT ANTICIPATE MUCH STRENGTH TO DEVELOP IN THE CONVECTION ALTHOUGH A BRIEF HEAVY DOWNPOUR IS LIKELY. AT THE UPPER LEVELS...A DEEP TROF EXISTS OVER THE PLAINS AND HAS BEEN PROGRESSING SLOWLY NEWD...WITH THE CENTER OF THIS POWERFUL STORM SYSTEM OVER ERN NEBRASKA. ANOTHER SHORTWAVE EXISTS OVER ERN ALBERTA PROVINCE CANADA AND COULD PLAY A ROLE IN OUR WX FOR FRIDAY. THE CENTER OF THE STORM SYSTEM WILL CONTINUE TO PUSH NEWD AND INTO THE UPR MS VALLEY BY LATE THIS EVENING WITH THE TROF AXIS EXTENDING TO THE S NOT MOVING THRU OUR FA UNTIL FRIDAY MORNING. THIS WILL PROMOTE MORE CLOUDS THAN NOT THRU THAT TIME AND WILL GO WITH A MOSTLY CLOUDY FCST ALTHOUGH LOSS OF HEATING THIS EVENING COULD DEVELOP A FEW MORE HOLES IN THE SC CLOUD DECK TO OUR W IN ERN KS. MODELS SEEM TO HAVE A GOOD HANDLE ON EWD PUSH OF RAIN AND TSRA... WITH THE HEAVIER RAIN AND TSRA TO EXIT THE FAR ERN FA...AROUND MARION AND WASHINGTON COUNTIES IN IL...BY THE MIDDLE PART OF THIS EVENING OR AROUND 9PM. WHAT WILL BE IN ITS WAKE WILL BE A PERIOD OF LIGHT RAIN OR DRIZZLE WHICH IN ITSELF SHOULD BE SHORT-LIVED. THIS AREA OF DRIZZLE SHOULD FOLLOW CD FROPA OR WITHIN AN HOUR OR SO. WITH THE EXIT OF THE HEAVIEST RAINFALL RATES ASSOCIATED WITH TSRA BY 23Z/6PM...DO NOT ANTICIPATE EXTENDING THE FFA IN TIME AND WILL LIKELY TAKE A DEEP CUT TO IT BY THE 4PM PACKAGE ISSUANCE. TEMPS ARE QUITE CHILLY BEHIND THE CDFNT...AND COUPLED WITH WIND GUSTS OUT OF THE W AT 25-30MPH...IT WILL FEEL MUCH COLDER IN AREAS COMPARED TO WHAT WE HAD DEALT WITHIN 24HRS PRIOR. MOS MIN TEMPS FOR TONIGHT LOOK REASONABLE DESPITE HIGH LEVELS OF MIXING AND CLOUDS WITH KMCI ALREADY AT 38F EARLY IN THE AFTN! DO NOT SEE THE NEED FOR ANY FROST OR FREEZE HEADLINES WITH MINS AT OR ABOVE 32F EXPECTED AND WINDS TOO HIGH FOR FROST DEVELOPMENT. TES .LONG TERM...(FRIDAY THROUGH NEXT THURSDAY) ISSUED AT 317 PM CDT THU APR 18 2013 FRIDAY AND FRIDAY NIGHT...A NORTHWEST FLOW SHORTWAVE /CURRENTLY OVER ERN ALBERTA AND WRN SASKATCHEWAN/ WILL DIVE SEWD INTO THE MIDWEST IN THE WAKE OF A DEPARTING LOW PRESSURE SYSTEM. THIS FEATURE WILL PROVIDE FORCING FOR SCT SHRA ON FRIDAY ACROSS PARTS OF MO/IL/IA. DESPITE SOME MODEL DISAGREEMENT REGARDING HOW FAR SOUTH AND WEST THIS FEATURE WILL BE LOCATED BY FRIDAY AFTN...THERE IS GENERAL AGREEMENT REGARDING AN AREA OF DIVERGENCE ALOFT ACCOMPANIED BY FAVORABLE H7-H5 LAPSE RATES FOR ISO-SCT SHRA ACROSS EXTREME NERN MO AND WEST CENTRAL IL. RIDGE AXIS THEN BUILDS INTO THE REGION ON FRI NIGHT LEADING TO DECREASING WINDS. SKIES ALSO BEGIN CLEARING ON FRI NIGHT WHICH SHOULD LEAD TO FAIR RADIATIONAL COOLING CONDITIONS CONSIDERING THE DRIER AIR MASS THAT WILL BE IN PLACE BY THAT TIME. HOWEVER...THE VERY MOIST GROUND AND LARGE AREAS OF STANDING WATER FROM RECENT HEAVY RAINFALL WILL PROBABLY MODIFY THAT AIR MASS BY MOISTENING IT AT THE LOWEST LEVELS. DEPENDING ON HOW MUCH MOISTENING OCCURS AND OVER WHAT DEPTH...IT IS POSSIBLE THAT FOG COULD DVLP TOMORROW NIGHT AND INTERFERE WITH THE EXPECTED TEMPERATURE DROP. SATURDAY THROUGH SUNDAY NIGHT...SFC HIGH SHIFTS EWD ALLOWING A RETURN OF SLY TO SWLY WINDS. THE COMBINATION OF WINDS AROUND THE BACK SIDE OF THE HIGH PRESSURE CENTER ALONG WITH WINDS INDUCED BY A DVLPG SFC LOW ON THE LEE SIDE OF THE ROCKIES WILL PULL A WMFNT NEWD INTO MO ON SAT. IT LOOKS LIKE THE WARMEST TEMPERATURES WILL BE ACROSS CENTRAL MO AND THE ERN OZARKS. A BROAD BUT WEAK TROF WILL PASS ACROSS THE AREA ON SUNDAY AND COULD PROVIDE SUPPORT FOR ISO- SCT SHRA HOWEVER THERE IS LOW CONFIDENCE IN PCPN ATTM. MONDAY THROUGH WEDNESDAY...A STRONG LOW PRESSURE SYSTEM IS FCST TO DVLP INVOF THE FOUR CORNERS REGION EARLY NEXT WEEK AND PRODUCE WIDESPREAD PCPN ACROSS MO/IL. THIS SYSTEM WILL ALSO SEND ANOTHER CDFNT ACROSS THE AREA LEADING TO COOLER TEMPERATURES FOR THE MIDDLE OF NEXT WEEK. THERE ARE STILL SOME TIMING AND PLACEMENT DIFFERENCES BETWEEN THE GFS AND THE ECMWF HOWEVER BOTH MODELS ARE IN GENERAL AGREEMENT ON THE LARGE SCALE PATTN. ATTM TUESDAY LOOKS LIKE THE MOST FAVORABLE TIME PD FOR WIDESPREAD PCPN. KANOFSKY && .AVIATION...(FOR THE 00Z TAFS THROUGH 00Z FRIDAY EVENING) ISSUED AT 740 PM CDT THU APR 18 2013 POTENT COLD FRONT MOVED THRU EARLIER TODAY SWITCHING WINDS TO THE WEST. IT IS CURRENTLY ALIGNED FROM N CNTRL IL THRU SE IL THEN ALONG THE MS RIVER INTO LA. PRECIP ALONG THE FRONT IS SLOWLY MOVING EAST AND SHOULD EXIT S CNTRL IL THIS EVENING. THERE IS PLENTY OF LOW LEVEL MOISTURE ON THE BACKSIDE OF THIS SYSTEM THAT WILL CONTINUE TO MOVE IN FROM THE NW THRU THE FCST. SOME PATCHES OF VERY LIGHT RAIN AND/OR DRIZZLE EXIST ACROSS NE MO AND W CNTRL IL. THIS ACTIVITY IS NOT SIGNIFICANT ENOUGH TO CAUSE ANY ISSUES AT THE TERMINALS AND THEREFORE WAS NOT INCLUDED IN THE FCST. SATELLITE AND SFC OBS SHOW WIDESPREAD MVFR CIGS ACROSS THE ENTIRE MIDWEST. THE MVFR CIGS WILL BE THE RULE OVERNIGHT AND SHOULD GRADUALLY RISE THRU THE DAY FRIDAY. CIGS SHOULD BEGIN TO SCATTER OUT TOWARDS FRIDAY EVENING. AS THE MAIN STORM SYSTEM LIFTS INTO THE GRT LKS...THE PRESSURE GRADIENT WILL INCREASE KEEPING A GUSTY WRLY WIND THRU FRIDAY. SPECIFICS FOR KSTL... MVFR CIGS AND A GUSTY WRLY WIND WILL CONTINUE THRU TONIGHT AND INTO TOMORROW. CIGS AND WINDS SHOULD DIMINISH AFTER SUNSET. 2% && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && WFO LSX
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 842 PM CDT THU APR 18 2013 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-191200- 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- 842 PM CDT THU APR 18 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. SOME POINTS ALONG THE MISSISSIPPI AND LAMOINE RIVERS ARE IN MAJOR FLOOD. PLEASE SEE THE APPROPRIATE FLOOD STATEMENT FOR SPECIFIC DETAILS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A CHANCE OF THUNDERSTORMS ACROSS PARTS OF THE AREA MONDAY AND MONDAY NIGHT AND FOR THE ENTIRE AREA ON TUESDAY. SOME POINTS ALONG THE MISSISSIPPI...ILLINOIS...FABIUS...QUIVRE AND LAMOINE RIVERS WILL BE IN OR GO TO MAJOR FLOOD. PLEASE SEE THE APPROPRIATE FLOOD STATEMENT FOR SPECIFIC DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT. GKS
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
945 PM CDT THU APR 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0812 PM HEAVY RAIN BELLEVILLE 38.53N 90.00W
04/18/2013 M4.99 INCH ST. CLAIR IL TRAINED SPOTTER
RAIN TOTAL OF 4.99 INCHES
&&
GKSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
947 PM CDT THU APR 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0923 PM HEAVY RAIN FREEBURG 38.43N 89.91W
04/18/2013 M4.13 INCH ST. CLAIR IL TRAINED SPOTTER
STORM TOTAL RAINFALL OF 4.13 INCHES
&&
GKSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
950 PM CDT THU APR 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 PM HEAVY RAIN HECKER 38.30N 89.99W
04/18/2013 M4.77 INCH MONROE IL TRAINED SPOTTER
4.77 INCHES OF RAIN SINCE 7 AM
&&
GKSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
952 PM CDT THU APR 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0951 PM HEAVY RAIN 2 NE GREENVILLE 38.91N 89.38W
04/18/2013 M4.30 INCH BOND IL TRAINED SPOTTER
STORM TOTAL
&&
MILLERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1042 PM CDT THU APR 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1023 PM HEAVY RAIN TROY 38.73N 89.89W
04/18/2013 M3.39 INCH MADISON IL TRAINED SPOTTER
STORM TOTAL...3.39 INCHES OF RAIN
&&
GKSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1044 PM CDT THU APR 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1021 PM HEAVY RAIN DU BOIS 38.22N 89.21W
04/18/2013 M2.05 INCH WASHINGTON IL TRAINED SPOTTER
2.05 INCHES OF RAIN TODAY
&&
GKSThe national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
The Mississippi River rose to major flood levels along the border of Lewis County. The river crested on April 21st, but remained above flood stage into May. Damage was limited to a few roads closed and agricultural lowlands.
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, April 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: 455808.