A frontal boundary moved through the region, triggering showers and thunderstorms. There were numerous reports of damaging winds and large hail with these storms.
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 frontal boundary moved through the region, triggering showers and thunderstorms. There were numerous reports of damaging winds and large hail with these storms.
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 7, 12:12 PM CST, 53 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED AVIATION NATIONAL WEATHER SERVICE ST LOUIS MO 112 PM CDT Mon Jul 7 2014 .SHORT TERM: (Through Late This Afternoon) Issued at 428 AM CDT Mon Jul 7 2014 Weak cold front near a KCID-KSTJ line at 08z is forecast to drift south and become stationary from northern Missouri into central IL during the day today. Potential convective trends are the main forecast problem today. Initially for early this morning, concern is for potential convection developing ahead of weak cold front, primarily from forcing of the low level jet in advance of the boundary. While there is almost no precip currently over the area, some of the explicit hi-res models suggest some development (albeit spotty) this morning and will keep low PoPs going due to this threat of "sunrise surprise", with slightly higher PoPs over southern IL where forcing of low level jet should be somewhat stronger. Given the warm moist airmass and the degree of instability that the AMS will attain almost any areas along and south of the front will have some potential for thunderstorms this afternoon. However, there is very good agreement in the explict solutions as well as the synoptic models that the threat of convection will be greatest over southeast sections of the CWA during the afternoon hours. Greater PoPs in this area seems reasonable since this part of the FA will be on the eastern fringes of the warmer mid-level temps, with low level warm advection providing the necessary lift of the very unstable airmass. Third area of concern is elevated convection now forming over se NE. Believe that main push of this activity will be to the southeast and it will likely remain west of our CWA, so have not pin-pointed any PoP threat associated with this feature in our CWA at this time. Although large scale shear is quite weak, given the degree of instability (MUCAPES 4000-5000 j/kg) a few of the storms this afternoon may poise a pulse-type severe weather threat. Certainly, the main severe weather concern will be tonight with the expected MCS. See the long-range discussion for more on this. Outside of the thunderstorm threat, today is going to be a steamy July day, with dewpoints pooling along the stalled frontal boundary teaming up with the very warm AMS...progged to be in the 20-22C range at 850 mb along and west of the Mississippi River. I've gone a bit higher than consensus guidance on dewpoints, which combined with afternoon highs in the mid 90s will place the heat index in the 100-105 range from mid MO into and just southeat of STL metro...just below advisory criteria. Truett .LONG TERM: (Tonight through Sunday) Issued at 428 AM CDT Mon Jul 7 2014 An MCS is expected to move east southeastward through the northern half of our forecast area late this evening and overnight due to strong low level warm air advection and moisture convergence on the nose of a w-swly low level jet ahead of a shortwave dropping southeastward into the region and over a cold front which will shift slowly southeastward into central MO late tonight. Plenty of low-mid level moisture and instability with the NAM model increasing tke K indices into the lower 40s over central MO by 06z Tuesday with surface LI values only down to -5 to -6 in this region by this time. Low-mid level wind shear will be increasing tonight as a 50-60 kt mid level wind max drops southeastward into northwest MO by 12z Tuesday. There will be the potential for damaging wind gusts, possibly large hail, and definitely heavy rainfall with this nocturnal MCS. The best chance of severe weather and heavy rainfall tonight should be along and north of Interstate 70. The MCS should gradually weaken and move east of our forecast area Tuesday morning with scattered convection likely developing across southeast MO and southwest IL Tuesday afternoon along the cold front. This convection should shift south southeast of the forecast area by late Tuesday night as the cold front continues to move southeastward with low level cold air advection and drying as a surface ridge builds southeastward into our area behind the cold front. Cooler and less humid weather is expected for Tuesday night through Wednesday night with 850 mb temperatures falling to around 12-15 degrees C across our forecast area. A warming trend will begin Thursday night and Friday as the upper level trough over the Great Lakes region moves east with rising upper level heights over our region along with surface winds becoming southerly as the surface ridge shifts east of the area. Showers and storms may move across the northern half of our forecast area on Friday due to low-mid level warm air advection ahead of a shortwave moving east southeastward through the northern Plains. The GFS model builds an upper level ridge northeastward into our area by Saturday morning. The ECMWF model keeps the upper level ridge suppressed further south due to shortwave energy eventually digging an upper level trough over the Great Lakes region on Sunday. The ECMWF model would lead to a cooler and wetter pattern for the weekend compared to the GFS model. For now will keep pops low and temperatures close to normal values for early to mid July. GKS && .AVIATION: (For the 18z TAFs through 18z Tuesday Afternoon) Issued at 1235 PM CDT Mon Jul 7 2014 Focus will be TSRA this afternoon and tonight. A surface fnt remains across the region. TSRA are expected to develop along and just S of this fnt with SUS/CPS most likely to be impacted by storms. Large TSRA complex still expected to develop across NEB/KS region late this afternoon into the evening. This MCS is expected to track SE impacting all terminals late this evening into the early morning hours Tues. This MCS will be capable of producing severe wind gusts in excess of 60 kts. TSRA shud diminish by sunrise Tues with VFR conditions expected thru the morning. Specifics for KSTL: Chances for TSRA continue thru this afternoon. Still expect a large MCS to move thru the area during the early morning hours Tues. Severe wind gusts in excess of 60 kts will be possible with this MCS. TSRA shud diminish by sunrise leaving the remainder of the TAF period as VFR. Tilly && .LSX WATCHES/WARNINGS/ADVISORIES: MO...NONE. IL...NONE. && WFO LSX
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 508 AM CDT MON JUL 7 2014 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-081015- 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- 508 AM CDT MON JUL 7 2014 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 THERE IS A CHANCE OF THUNDERSTORMS TODAY AND TONIGHT. SOME OF THE STORMS MAY BE SEVERE...MAINLY THIS AFTERNOON AND TONIGHT. THESE SEVERE STORMS WILL BE CAPABLE OF PRODUCING DAMAGING WINDS AND LARGE HAIL. HEAVY RAINFALL IS POSSIBLE WITH THUNDERSTORMS TONIGHT. MAJOR RIVER FLOODING WILL BE TAKING PLACE AT SEVERAL LOCATIONS ON THE MISSISSIPPI RIVER NORTH OF GRAFTON. PLEASE SEE THE APPROPRIATE FLOOD WARNING OR STATEMENT FOR SPECIFIC DETAILS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THE CHANCE FOR THUNDERSTORMS WILL CONTINUE TUESDAY AND TUESDAY EVENING. SEVERE STORMS ARE POSSIBLE ACROSS SOUTHEAST MISSOURI. THE CHANCE OF THUNDERSTORMS WILL RETURN THURSDAY NIGHT AND CONTINUE THROUGH SUNDAY. MAJOR RIVER FLOODING WILL EXPAND TO MANY LOCATIONS ON THE MISSISSIPPI RIVER NORTH OF GRAFTON FOR MUCH OF THE WEEK. MAJOR FLOODING IS ALSO FORECAST ALONG ON THE CUIVRE RIVER AT OLD MONROE AND ALONG THE ILLINOIS RIVER AT HARDIN. PLEASE SEE THE APPROPRIATE FLOOD WARNING OR STATEMENT FOR SPECIFIC DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT. SPOTTERS ARE ENCOURAGED TO REPORT SEVERE WEATHER AND HEAVY RAINFALL TO THE NATIONAL WEATHER SERVICE. GKS
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
146 PM CDT MON JUL 07 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0130 PM HAIL ELSAH 38.95N 90.35W
07/07/2014 E0.25 INCH JERSEY IL TRAINED SPOTTER
ALSO ACCOMPANIED BY 30-40MPH WINDS. OBSERVER ALSO
EXPERIENCED VERY HEAVY RAINFALL OF A HALF OF AN INCH IN
LESS THAN TEN MINUTES.
&&
GOSSELINThe St Louis radar (KLSX), 57 km away, was scanning. The volume nearest the first event began at 19:06 UTC.
5 thunderstorm wind, 2 hail. Local standard time, as filed.
Thunderstorm winds blew down a large tree as well as large tree limbs in Godfrey.
Thunderstorm winds blew down several large tree limbs and power lines around town.
Thunderstorm winds blew down a large tree onto a power line. Also, numerous large tree limbs were blown down around town.
Lots of quarter sized hail was reported over Mascoutah.
Thunderstorm winds blew down a large tree blocking West North Street in Mt. Sterling.
Thunderstorm winds blew down numerous trees across Pittsfield. Also, a large tree was blown down across Illinois Route 107 just north of Interstate 72.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2014Every state in 2014This day in weather historyWarnings in Illinois, July 2014
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: 539675, 539676, 539677, 539678, 539683, 540253, 540258.