A couple of severe thunderstorms moved across parts of Lincoln and Northern St. Louis counties.
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 couple of severe thunderstorms moved across parts of Lincoln and Northern St. Louis counties.
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 17, 6:19 AM CST, 4 hours 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 719 AM CDT TUE JUL 17 2007 .DISCUSSION... ONE MCS MOVG SEWD THRU IL JUST NE OF THE CWA...WITH A SECOND MCS MOVG SEWD THRU SERN MN NERN IA ATTM. BOTH OF THESE CONVECTIVE SYSTEMS APR TO BE JUST AHD OF RELATIVELY WK NW FLOW SHRTWVS AND ALSO ALONG OR N OF A NRLY STNRY BNDRY EXTDG FM A SFC LOW OVR SD SE THRU EXTRM NERN MO TO SWRN IN. ALTHOUGH THIS SYNOPTIC BNDRY WILL TRY TO PUSH FURTHER NE OF THE CWA TDA AND TGT...OUTFLOW BNDRYS FM MCS ACTIVITY MAY PUSH INTO THE NRN OR ERN PTN OF THE CWA PROVIDING A FOCUSING MECHANISM FOR FURTHER CONVECTIVE DEVELOPMENT IN THE MOIST AND UNSTABLE ATMOSPHERE OVR THE CWA. MDLS ALSO CONT TO INDICATE FAIRLY WK NW FLOW SHRTWVS CONTG TO DROP SEWD THRU THE REGION. IT APRS THAT MOST OF THE MORE ORGANIZED...WIDESPREAD AND HEAVIER PCPN WILL REMAIN N AND NE OF THE CWA TDA AND TGT...THOUGH PLAN TO INCLUDE AT LEAST LOW POPS OVR THE NRN AND ERN PTN OF THE CWA. NAM MDL IN PARTICULAR CONTS TO DEPICT THE BEST LOW-MID LVL WAA ACRS MAINLY IA AND NRN IL TDA THRU WED ALONG WITH THE HIGHEST K INDICES OF ARND 35 TO 40. WILL KEEP THE FCST DRY FOR WED AND WED NGT AS IT APRS THE SYNOPTIC SFC BNDRY WILL PUSH A LTL FURTHER N-NE OF THE REGION. WED APRS TO BE THE HOTTEST DAY THIS FCST PD WITH CONTD LOW LVL SWLY FLOW AND THE LEAST AMOUNT OF CONVECTION AND CONVECTIVE DEBRIS CLOUDS EXPECTED. LTR SHIFTS MAY NEED TO CONSIDER ISSUING A HT ADVSRY FOR AT LEAST A PTN OF THE CWA ON WED WITH HIGH TEMPS FCST IN THE MID 90S AND DWPTS ARND 70 DEGREES OVR A PTN OF THE CWA. THE BEST CHC OF TSRA SHOULD OCCUR THU AFTN AND THU NGT AS MID-UPR LVL TROF DPNS OVR THE GRT LKS REGION SENDING A CDFNT SWD THRU THE CWA. THIS FRONT WILL PROVIDE A GOOD CONVERGENT FOCUS FOR CONVECTION IN THE WARM...UNSTABLE AND HUMID ENVIRONMENT ALNG AND S OF THIS FRONT. SLIGHTLY COOLER AND LESS HUMID AIR SHOULD FILTER SWD INTO THE CWA ON FRI AND FRI NGT BHND THE CDFNT AS A RDG OF HI PRES BLDS SWD INTO THE REGION. GKS && .AVIATION... FOR THE 12Z TAFS...THE SECOND OF TWO BOWING CONVECTIVE SYSTEMS IS RAPIDLY MOVING SSEWRD AND MAY AFFECT THE UIN TERMINAL BETWEEN 13 - 15 UTC. SURFACE WINDS WITH THE SECOND SYSTEM RANGED FROM 25 TO 35 KTS. THE WEAK TO MODERATE SURFACE WINDS IS LIKELY DUE TO THE LOW- LEVEL STABLE LAYER PRODUCED BY THE FIRST BOWING SYSTEM WHICH IS MOVING ACROSS PARTS OF NORTH-CENTRAL THROUGH WEST CENTRAL INDIAMA. SPC MESOSCALE ANALYSIS SHOW SURFACE-BASED CIN VALUES OVER 650 J/KG FROM EAST CENTRAL IOWA THROUGH WEST CENTRAL ILLINOIS. EXPECT THE SECOND BOWING CONVECTIVE SYSTEM TO MOVE WITH THE 700 MB CORFIDI VECTORS WHICH WILL RESULT IN THE SYSTEM MOVING OVER MUCH OF WEST CENTRAL ILLINOIS AND THEN INTO SOUTH CENTRAL ILLINOIS. LATEST SURFACE ANALYSIS SHOWS A WARM FRONTAL BOUNDARY EXTENDING FROM SOUTHEAST SOUTH DAKOTA THROUGH SOUTH-CENTRAL ILLINOIS AND THEN SOUTHEAST INTO CENTRAL KENTUCKY. EXPECT THE WARM FRONT TO SLOWLY WOKR ITS WAY NORTHEASTWARD DURING THE NEXT 12 TO 18 HOURS. WL KEEP TSTMS OUT OF THE TERMINALS FOR STL AND SUS AT THIS TIME. HOWEVER WE WILL CONTINUE A CLOSE EYE FOR ANY DEVIATION OF THE CONVECTIVE BOWING SYSTEM. RP && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && WFO LSX
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 617 AM CDT TUE JUL 17 2007 ILZ058>060-064-065-069-070-074-095>101-MOZ018-019-026-027-034>036- 042-051-052-060-061-063-064-181130- GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL- MARION IL-WASHINGTON IL-ADAMS IL-BROWN IL-PIKE IL-CALHOUN IL- JERSEY IL-MADISON IL-ST. CLAIR IL-KNOX-LEWIS-SHELBY-MARION-MONROE- RALLS-PIKE-AUDRAIN-MONTGOMERY-LINCOLN-WARREN-ST. CHARLES- ST. LOUIS-ST. LOUIS CITY- 617 AM CDT TUE JUL 17 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL ILLINOIS...SOUTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...CENTRAL MISSOURI...EAST CENTRAL MISSOURI AND NORTHEAST MISSOURI. .DAY ONE...TODAY AND TONIGHT THERE IS A CHANCE OF THUNDERSTORMS TODAY AND TONIGHT. A FEW STORMS MAY PRODUCE VERY HEAVY RAINFALL...STRONG WIND GUSTS AND SMALL HAIL. HIGH TEMPERATURES IN THE LOWER TO MIDDLE 90S WILL COMBINE WITH THE HIGH HUMIDITY TO PRODUCE DAYTIME HEAT INDEX VALUES CLOSE TO 100 DEGREES THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY HIGH TEMPERATURES IN THE LOWER TO MIDDLE 90S WILL COMBINE WITH THE HIGH HUMIDITY TO PRODUCE DAYTIME HEAT INDEX VALUES CLOSE TO 100 DEGREES BOTH WEDNESDAY AFTERNOON AND THURSDAY AFTERNOON. THERE IS A CHANCE OF THUNDERSTORMS THURSDAY AND THURSDAY NIGHT AS A COLD FRONT MOVES SOUTHWARD THROUGH THE REGION. SOME OF THESE STORMS COULD BE QUITE STRONG. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. && FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1 ILZ079-102-MOZ041-047>050-059-062-065-072>075-084-085-099-181130- RANDOLPH IL-MONROE IL-BOONE-MONITEAU-COLE-OSAGE-CALLAWAY- GASCONADE-FRANKLIN-JEFFERSON-CRAWFORD-WASHINGTON-ST. FRANCOIS- STE. GENEVIEVE-IRON-MADISON-REYNOLDS- 617 AM CDT TUE JUL 17 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST ILLINOIS...CENTRAL MISSOURI...EAST CENTRAL MISSOURI AND SOUTHEAST MISSOURI. .DAY ONE...TODAY AND TONIGHT HIGH TEMPERATURES IN THE LOWER TO MIDDLE 90S WILL COMBINE WITH THE HIGH HUMIDITY TO PRODUCE DAYTIME HEAT INDEX VALUES CLOSE TO 100 DEGREES THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY HIGH TEMPERATURES IN THE LOWER TO MIDDLE 90S WILL COMBINE WITH THE HIGH HUMIDITY TO PRODUCE DAYTIME HEAT INDEX VALUES CLOSE TO 100 DEGREES BOTH WEDNESDAY AFTERNOON AND THURSDAY AFTERNOON. THERE IS A CHANCE OF THUNDERSTORMS THURSDAY AFTERNOON THROUGH FRIDAY AS A COLD FRONT MOVES SOUTHWARD THROUGH THE REGION. SOME OF THESE STORMS COULD BE QUITE STRONG. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. && FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1 GKS
The St Louis radar (KLSX), 39 km away, was scanning. The volume nearest the first event began at 16:26 UTC.
4 thunderstorm wind. Local standard time, as filed.
Amateur radio spotters reported power lines down in Foley.
Storm spotters reported a large tree and large limbs down.
A building on Romiss Court lost a small part of its roof and had one wall pushed inward.
Amateur radio spotters reported a couple of power lines down near Spirit of St. Louis Airport.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2007Every state in 2007This day in weather historyWarnings in Missouri, July 2007
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: 46998, 46999, 47003, 47002.