An MCS moved through the region during the morning hours of June 2nd. Some of the storms produced damaging winds.
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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.
An MCS moved through the region during the morning hours of June 2nd. Some of the storms produced damaging winds. By the afternoon hours, a cold front began to move through region, triggering additional showers and thunderstorms with some areas of damaging winds.
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 2, 5:38 AM CST, 1 hour 34 minutes earlier.
Area Forecast Discussion...Updated Aviation National Weather Service Saint Louis MO 638 AM CDT Sat Jun 2 2018 .SHORT TERM... (Through Late Tonight) Issued at 317 AM CDT Sat Jun 2 2018 (Today - Tonight) Ongoing MCS is just entering NW MO as of 0700 UTC. Expectation is for complex to continue southeastward roughly following forward- propagating Corfidi vectors. Complex should gradually weaken with eastward extent however as it heads into a less unstable airmass. Marginally severe winds may be possible for portions of central and northeast Missouri early this morning as thunderstorms enter the CWA. Combination of low-level moisture convergence weakening this morning and MCS continuing to move into a less unstable environment should lead to complete decay by late morning. Attention then will turn to redevelopment of convection this afternoon. Based on the expectation that activity from the decaying MCS makes as far southeast as portions of east-central Missouri, thinking is that an outflow boundary this afternoon will be located somewhere across south-central into southeast Missouri as well as southwest Illinois. Believe this is where highest threat for severe thunderstorms will be late this afternoon into early this evening. Environment will liklely be characterized by at least moderate instability and deep- layer shear in the 25-30 knot range. Multicellular clusters of storms will likely be the favored storm mode, with large hail and damaging winds the primary hazards. Further to the north, convective coverage and severity is more uncertain as this morning's MCS probably will stabilize the atmosphere substantially. Isolated- scattered storms still may try and fire along the trailing synoptic boundary, but these storms may struggle to become strong to severe given the modest expected instability. Scattered thunderstorms are expected to continue into the evening hours across mainly southeast Missouri and southwest Illinois. Storms could be strong to severe through the evening hours before they gradually weaken as they head southeast. Synoptic cold front should exit the CWA by around midnight, with cooler and drier air filtering into the bi-state region the rest of the night. Lows tonight should dip into the upper 50s to low 60s behind the front beneath a clearing sky from west to east. Gosselin .LONG TERM... (Sunday through Friday) Issued at 317 AM CDT Sat Jun 2 2018 Focus thru the forecast period will be temps. The front and upper trof currently across ern NEB/KS shud be east of the CWA by 12z Sun. Behind this front, a rather strong, cool and dry sfc ridge will build into the region. While the ridge will be building into the region, ample insolation shud help keep temps near seasonal average. Temps Sun night are expected to drop into the lower 50s, especially in low lying areas with light winds and a clear sky. Going forecast may still be too warm. Otherwise, this pattern remains in place thru Tues as the sfc ridge gradually builds east thru the region. Upper ridge builds into the area by Wed, bringing temps back above seasonal average. This warm pattern is expected to continue thru the end of the forecast period. However, mdls do agree on a weak cdfnt pushing thru the region late Thurs that shud allow Fri to be slightly cooler. There are a number of questions regarding PoPs for Wed thru Fri. The ECMWF keeps the region dry until Fri. This soln seems unlikely given relatively cooler 700mb temps across the area. Believe the GEM/GFS solns are on the right track with some form of a ridge runner or at the very least convection associated with the sfc fnt. Given the uncertainty in timing as well as differences among mdls, have kept PoPs in the lower chance range for now. Tilly && .AVIATION... (For the 12z TAFs through 12z Sunday Morning) Issued at 626 AM CDT Sat Jun 2 2018 Watching thunderstorm activity slowly move into portions of northeast and central Missouri early this morning. Morning storms have best chance of affecting KCOU and KUIN before storms weaken and dissipate eventually by late this morning. Additional storms may develop by mid afternoon and have VCTS mention for metro terminals. Cold front will move through the region from west to east late this afternoon through late evening, with winds veering to the northwest behind the front. SPECIFICS FOR KSTL: Storms pushing east/southeast into portions of central and northeast Missouri are expected to weaken and eventually dissipate by late this morning. Cannot totally rule out a stray storm from the remnants, but confidence too low to mention. Additional scattered storms should develop this afternoon and have a VCTS group into the early evening hours. Actual cold front moves through terminal before midnight with winds veering to the northwest. Northwest wind will likely become gusty by late Sunday morning. Gosselin && .LSX WATCHES/WARNINGS/ADVISORIES... MO...None. IL...None. && WFO LSX
Hazardous Weather Outlook National Weather Service Saint Louis MO 435 AM CDT Sat Jun 2 2018 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-031200- 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-Saint 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-Saint Charles MO-Franklin MO- Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO- Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO- Madison MO-Reynolds MO- 435 AM CDT Sat Jun 2 2018 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 likely this morning across portions of central and northeast Missouri. A chance for thunderstorms continues this afternoon and evening across southeast Missouri and southwest Illinois. Some thunderstorms may be severe, mainly this afternoon and evening, capable of producing large hail and damaging winds. .DAYS TWO THROUGH SEVEN...Sunday through Friday There is a chance for thunderstorms Wednesday through Friday. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report any severe weather to the National Weather Service. Tilly
Special Weather Statement
National Weather Service St Louis MO
630 AM CDT SAT JUN 2 2018
MOZ018-019-026-021215-
Knox MO-Lewis MO-Shelby MO-
630 AM CDT SAT JUN 2 2018
...SIGNIFICANT WEATHER ADVISORY FOR KNOX...SHELBY AND WESTERN LEWIS
COUNTIES UNTIL 715 AM CDT...
At 629 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Brashear to Clarence. Movement was
northeast at 35 mph.
Winds in excess of 40 mph will be possible with these storms.
Locations impacted include...
Shelbina, Edina, Clarence, La Belle, Shelbyville, Knox City,
Greensburg, Plevna, Maud, Steffenville, Colony, Emden, Hunnewell,
Hurdland, Novelty, Baring, Bethel, Newark and Leonard.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4030 9195 4026 9195 4026 9184 3966 9185
3966 9218 3961 9219 3961 9228 3967 9230
3995 9229 3996 9234 4030 9235
TIME...MOT...LOC 1129Z 223DEG 29KT 4016 9247 3975 9230
TillySpecial Weather Statement
National Weather Service St Louis MO
806 AM CDT SAT JUN 2 2018
MOZ034-035-042-050-051-021345-
Montgomery MO-Audrain MO-Monroe MO-Ralls MO-Callaway MO-
806 AM CDT SAT JUN 2 2018
...SIGNIFICANT WEATHER ADVISORY FOR RALLS...AUDRAIN...NORTHWESTERN
MONTGOMERY...NORTHEASTERN CALLAWAY AND EASTERN MONROE COUNTIES UNTIL
845 AM CDT...
At 806 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles south of Monroe City to near Auxvasse.
Movement was east at 30 mph.
Dime size hail and winds in excess of 40 mph will be possible with
these storms.
Locations impacted include...
Mexico, Vandalia, Montgomery City, Monroe City, Wellsville, Santa Fe,
Auxvasse, New London, Perry, Laddonia, Center, Farber, Martinsburg,
Rensselaer, Spaulding, Shamrock, Rush Hill, Benton City, Vandiver and
Stoutsville.
This also includes Mark Twain Lake Recreational Area.
LAT...LON 3968 9131 3945 9146 3923 9142 3897 9149
3898 9202 3964 9188
TIME...MOT...LOC 1306Z 270DEG 26KT 3955 9172 3905 9189
TillyThe St Louis radar (KLSX), 125 km away, was scanning. The volume nearest the first event began at 13:10 UTC.
2 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds blew down numerous tree limbs in Holts Summit.
Thunderstorm winds blew down several large tree limbs. One of the limbs blocked a roadway.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2018Every state in 2018This day in weather historyWarnings in Missouri, June 2018
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: 767343, 767344.