Stalled warm front was focus of activity that fired up during the late afternoon and evening hours on May 19th.
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.
Stalled warm front was focus of activity that fired up during the late afternoon and evening hours on May 19th.
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 May 19, 2:39 PM CST, 2 hours 48 minutes earlier.
Area Forecast Discussion National Weather Service Saint Louis MO 339 PM CDT Fri May 19 2017 .SHORT TERM... (Through Late Saturday Afternoon) Issued at 338 PM CDT Fri May 19 2017 New tornado watch has just been issued for much of central and parts of east central Missouri along the quasi-stationary front. Latest GOES-16 imagery is showing cloud streets ahead of a QLCS over southwest Missouri. This is south of the stationary front that extends front south of Kansas City and Columbia to north of St. Louis. The atmosphere has destabilized to the south of the warm front with MLCAPES now between 500-2000 J/kg. Deep layer shear is also sufficient for severe storms including supercells and organized multi-cells including the QLCS. Runs of the CAMS have been showing one QLCS moving across the CWA this evening and another moving across the CWA late tonight. There will the potential for all hazards with these storms. There could also be some locally heavy rainfall across the area. Showers and thunderstorms will begin to move out of the area on Saturday from west to east as a cold front begins to move across the area. Britt .LONG TERM... (Saturday Night through Next Friday) Issued at 338 PM CDT Fri May 19 2017 (Saturday Night - Wednesday Night) Cold front will exit the CWA early on Saturday night from west to east. Along and ahead of the front, there will exist at least a chance of showers and thunderstorms. Severity is highly unknown as atmosphere may be overworked and stabilized ahead of the actual cold front due to antecedent convection. Severe threat regardless would likely be confined to the evening hours. Story behind the front continues to be the much cooler airmass which will quickly filter into the mid-Mississippi Valley beginning after the frontal passage. Below to much below normal temperatures will likely be the rule through at least Wednesday night as longwave trough amplifies overhead, and pivots southeastward toward the area by Tuesday night/Wednesday. A prolonged chance of showers appears possible beginning Monday night through Wednesday, with a closed low forming at midlevels. Cannot rule out a few thunderstorms on Monday and Tuesday, particularly during peak heating. Coolest temperatures will likely be on Wednesday as 850-hPa temperatures drop below +5C. Look for highs in the low to mid 60s for most locations. Coldest night will likely be Wednesday Night with lows in the mid to upper 40s. (Thursday - Next Friday) A quick moderation in temperatures is likely to end the work week along with drier conditions as midlevel shortwave ridge moves toward the bi-state region. Highs by Friday look to be back to just below normal. Gosselin && .AVIATION... (For the 18z TAFs through 18z Saturday Afternoon) Issued at 1236 PM CDT Fri May 19 2017 Scattered thunderstorms are expected to redevelop along and south of a stationary front this afternoon that currently extends from south of KCOU to north of KSTL. MVFR and some IFR ceilings will slowly lift during the afternoon hours. There will be a better chance of thunderstorms toward 00Z when a more organized band of thunderstorms moves across the area. A second area of thunderstorms is expect to move across the area between 08-12Z affecting all of the terminals. Any thunderstorms will have the potential to produce MVFR/IFR conditionals and brief gusty winds. MVFR/some IFR conditions are expect late tonight and early on Saturday morning before they improve on during the day on Saturday. SPECIFICS FOR KSTL: There will be the threat for thunderstorms to redevelop late this afternoon and early this evening. The best chance for thunderstorms will be early this evening and again overnight. Any thunderstorms will have the potential to produce MVFR/IFR conditionals and brief gusty winds. MVFR/some IFR conditions are expect late tonight and early on Saturday morning before they improve on during the day on Saturday. Any thunderstorms will have the potential to produce MVFR/IFR conditionals and brief gusty winds. MVFR/some IFR conditions are expect late tonight and early on Saturday morning before they improve on during the day on Saturday. Current southwest winds is expected to turn to the north this afternoon. Britt && .LSX WATCHES/WARNINGS/ADVISORIES... MO...None. IL...None. && WFO LSX
Hazardous Weather Outlook National Weather Service Saint Louis MO 326 PM CDT Fri May 19 2017 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-201145- 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- 326 PM CDT Fri May 19 2017 This hazardous weather outlook is for portions of eastern and central Missouri as well as west central and southwest Illinois. .DAY ONE...Tonight Thunderstorms through tonight may be severe with large hail up to the size of golf balls, wind gusts to 70 mph and a few tornadoes also possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday A few severe thunderstorms are possible on Saturday, mainly across portions of southern Illinois. .SPOTTER INFORMATION STATEMENT... Spotter activation will be needed tonight. Spotters are encouraged to report any severe weather observed to the National Weather Service. Gosselin
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
202 PM CDT FRI MAY 19 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0348 AM TSTM WND DMG FREEBURG 38.32N 91.92W
05/19/2017 OSAGE MO EMERGENCY MNGR
METAL OUTBUILDING DESTROYED. TIME ESTIMATED FROM RADAR.
&&
EVENT NUMBER LSX1700419
GOSSELINPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
205 PM CDT FRI MAY 19 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0436 AM TSTM WND DMG WARRENTON 38.82N 91.14W
05/19/2017 WARREN MO FIRE DEPT/RESCUE
NUMEROUS TREES AND POWER LINES DOWN IN TOWN. SEVERAL
ROOFS DAMAGED DUE TO FALLING TREE LIMBS.
&&
EVENT NUMBER LSX1700420
GOSSELINPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
208 PM CDT FRI MAY 19 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0548 AM TSTM WND DMG TROY 38.73N 89.89W
05/19/2017 MADISON IL PUBLIC
SHED LIFT AND DEPOSITED IN WHEAT FIELD ON HWY 61 IN
SOUTTH TROY
&&
EVENT NUMBER LSX1700421
KELLYPRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE ST LOUIS MO
209 PM CDT FRI MAY 19 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0548 AM TSTM WND DMG TROY 38.98N 90.98W
05/19/2017 LINCOLN MO PUBLIC
SHED LIFT AND DEPOSITED IN WHEAT FIELD ON HWY 61 IN
SOUTTH TROY
&&
CORRECTED COUNTY/STATE...LOCATION
EVENT NUMBER LSX1700421
KELLYThe St Louis radar (KLSX), 136 km away, was scanning. The volume nearest the first event began at 23:27 UTC.
2 thunderstorm wind, 1 tornado, 1 hail. Local standard time, as filed.
Thunderstorm winds blew down several large trees, numerous tree limbs and power lines around town. A couple of power poles were snapped off and some shingles blown off of a few homes on the west side of town.
A weak tornado touched down briefly about one mile northwest of Wardsville, MO. The tornado was on the ground for approximately two minutes, and traveled about one mile. The tornado initially touched down in a small subdivision and caused minor damage to the roof of a single family home. The tornado then preceded northeast causing tree damage and striking another home where it caused significant damage to the roof. The estimated wind speed was 100 miles per hour at this residence. The tornado continued moving northeast uprooting and snapping trees. Two large trees fell on a home near the end of the tornado's path. The tornado finally dissipated on the southwest bank of the Moreau River where it broke the tops off of a few trees. Overall, the tornado was rated EF1 with a path length of 0.95 miles and a max path width of 75 yards. No deaths or injuries were reported.
Thunderstorm winds uprooted a large tree and blew down several large tree limbs.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2017Every state in 2017This day in weather historyThe tornado archive for Missouri, 2017Warnings in Missouri, May 2017
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: 715820, 715824, 715821, 715822.