Isolated severe storms moved through southern Illinois.
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.
Isolated severe storms moved through southern Illinois.
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 16, 3:06 PM CST, 14 minutes earlier.
Area Forecast Discussion National Weather Service Saint Louis MO 406 PM CDT Fri Jun 16 2017 .SHORT TERM... (Through Late Saturday Afternoon) Issued at 342 PM CDT Fri Jun 16 2017 Ongoing convection shud dissipate with sunset. Main focus for tonight will be an MCS expecting to develop across wrn IA into ern NEB that is expected to move sewd into central MO late tonight. This MCS shud weaken thru Sat morning as it moves swd out of the CWA. Timing is still uncertain, however, latest thoughts are that the MCS shud enter the nwrn portions of the CWA shortly after Midnight and primarily impact the wrn third to half of the CWA overnight. This MCS activity generates some questions regarding temps with a modified airmass, as well as dewpoints as dewpoints will likely pool along any outflow boundary. Have therefore made only slight modifications to the prev temps and held off issuing any headlines due to heat. That said, expect Heat Index values between 100 and 105 degrees Sat afternoon for portions of central MO. This area is most likely to see convection overnight and therefore wud expected heating to be at least delayed, but shud also be somewhat suppressed. However, if clouds clear out quickly enuf, this may lead to even higher dewpoints. With these higher dewpoints in place Sat afternoon, mdls suggest CAPE values in excess of 5000 J/kg across wrn and nrn portions of the CWA. Appears two areas of storms are possible late Sat afternoon, one across central MO and another further north along the cdfnt. Either of these has the potential to produce severe storms. Tilly .LONG TERM... (Saturday Night through Next Friday) Issued at 342 PM CDT Fri Jun 16 2017 The cold front and associated trough responsible for the morning MCS will slowly move eastward into north central and central Missouri. The front will encounter an environment of forecast CAPE values in the range of 4500 J/kg, mid level lapse rates of 7C/KM. The forecast bulk shear in the range initially of up to 50 knots by mid evening increases to over 70 knots through the late night hours. This will likely lead to another MCS which will primarily be a damaging wind threat with some hail also possible. The cold front will likely clear the area by mid morning on Sunday with high pressure building in from the great plains. The entire area will see cool and drier air with temperatures just below climatological norms. This will be short lived as high pressure will slowly push east to the Ohio Valley by Wednesday evening. The flow will turn to the south by early Tuesday allowing warm moist air to return to the area. A storm system in the great plains will begin to push east Wednesday afternoon. This will likely set the stage for another MCS to impact the area toward the end of next week. Kelly && .AVIATION... (For the 18z TAFs through 18z Saturday Afternoon) Issued at 1240 PM CDT Fri Jun 16 2017 An MCV over srn MO will be a focus for TSRA this afternoon, tho can not completely rule out storm further north across ern MO/SW IL. Otherwise, expect VFR conditions thru this evening with winds becoming sly to sswly. Expect another MCS to develop and impact KUIN/KCOU terminals just after Midnight tonight into Sat morning. Severe wind gusts will be possible. However, these details will be added with future updates as confidence in timing/location increase. SPECIFICS FOR KSTL/KSUS/KCPS: MCS mentioned above shud impact terminals around sunrise Sat. These storms shud be weaker and do not anticipate severe gusts. Storms shud diminish thru the morning hours leaving the rest of Sat dry and VFR. Tilly && .LSX WATCHES/WARNINGS/ADVISORIES... MO...None. IL...None. && WFO LSX
Hazardous Weather Outlook National Weather Service Saint Louis MO 406 PM CDT Fri Jun 16 2017 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-171200- 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- 406 PM CDT Fri Jun 16 2017 This hazardous weather outlook is for portions of eastern and central Missouri as well as west central and southwest Illinois. .DAY ONE...Tonight Severe thunderstorms are possible late tonight into the overnight hours for parts of central and northeast Missouri. The primary threats are large hail and damaging wind gusts. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Severe thunderstorms are possible from late Saturday afternoon into Saturday night. The primary threat is damaging wind gusts. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed late tonight. Kanofsky
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
346 PM CDT FRI JUN 16 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0346 PM HAIL DUTZOW 38.61N 90.99W
06/16/2017 E0.25 INCH WARREN MO TRAINED SPOTTER
&&
EVENT NUMBER LSX1700493
KANOFSKYThe St Louis radar (KLSX), 115 km away, was scanning. The volume nearest the first event began at 21:18 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds blew down several large tree limbs at a farm and the side of a metal shed was blown outward.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2017Every state in 2017This day in weather historyWarnings in Illinois, June 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: 717705.