After several heavy rain events in June across the Upper Midwest, floodwaters worked down the Mississippi River. Flooding occurred in late June at La Crosse (La Crosse County).
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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 ARX wrote it up.
After several heavy rain events in June across the Upper Midwest, floodwaters worked down the Mississippi River. Flooding occurred in late June at La Crosse (La Crosse County).
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 La Crosse, WI wrote its last area forecast discussion before the first event at Jun 24, 4:51 PM CST, 2 hours 19 minutes earlier.
Area Forecast Discussion National Weather Service La Crosse WI 551 PM CDT Sun Jun 24 2018 .SHORT TERM...(This evening through Monday) Issued at 248 PM CDT Sun Jun 24 2018 An upper level disturbance moving across the region this afternoon into this evening will bring a continued chance of thunderstorms. 700mb winds were only around 10 knots, thus any storms will be slow moving. The stronger storms will be capable of producing wind gust up to around 40 mph and brief heavy rain. The showers and storms will linger into evening, especially north of Interstate 90. Overnight, patchy valley fog is expected again, especially in the Wisconsin River valley. On Monday, the latest model trends are indicating a slower arrival of the rain. Will delay the onset of the chances of rain by at least a few, if not several hours. The latest GFS/WRF models would suggest the rain would not arrive until after 00z Tuesday. The Canadian model was quicker, thus want to see the 12z ECMWF before making final adjustment to the pops grids. Due to the slower arrival of the rain, will raise max temperatures a few degrees. .LONG TERM...(Monday night through Sunday) Issued at 248 PM CDT Sun Jun 24 2018 Upper level closed low/trough slowly moves into the Great Lakes Region Monday night into Tuesday night. The 24.12z GFS/NAM/ECMWF show increasing low level jet/moisture transport/convergence into the forecast area Monday evening/night. With decent vertical motion/forcing increasing over forecast area...showers and thunderstorms will overspread much of the forecast area. The deterministic models show 1.5 to 1.7 inches of precipitable water values over forecast area. slower movement of thunderstorms will have the potential for heavy rainfall. Severe threat looks to be across the far southern forecast area...where 0-3km shear is 20-25 knots and elevated instability in the 0-6km layer of around 1200 j/kg. Next concern is the severe thunderstorm potential for Tuesday...The 24.12z GFS/NAM suggest increasing instability along and ahead of surface front Tuesday afternoon/evening across the southern forecast area(northeast IA/southwest WI). However...with convective cloud debris potentially over forecast area from Monday night and ongoing storms...this may reduce the instability over the area. The 24.12z GFS/NAM indicate 0-3km shear of 20 to 30 knots over southern parts of the forecast area Tuesday afternoon/evening. With moisture convergence and vertical motion along surface cold front...expect showers/thunderstorms to redevelop along front and potentially become severe across parts of northeast Iowa and southwest Wisconsin Tuesday afternoon/evening. Surface ridge builds into southern Minnesota/central Iowa Wednesday and provide dry weather across the forecast area. Main forecast concerns Wednesday night through Sunday are precipitation chances Thursday night into the weekend and potential for hot conditions Thursday into the weekend. The 24.12z GFS/ECMWF/GEM are in decent agreement in digging upper level trough over the Pacific Northwest and amplifying upper level ridge over the central/eastern United States Thursday into next weekend. Main difference between the deterministic models is the strength of the upper level trough/ridge...as GFS is stronger than the ECMWF/GEM with the trough/ridge. This will have impacts on timing and chances of showers/thunderstorms...and the potential for hot conditions...Thursday night into the weekend. Confidence in forecast precipitation chances Thursday night into next weekend is low...based on the differences of strength of upper level trough/ridge. The GFS/ECMWF are showing 925mb temperatures climbing to around plus 25 degrees celsius Thursday into the weekend. High temperatures will climb into the upper 80s to lower 90s across the forecast area during this period. Depending on strength of upper level ridge there is potential temperatures could climb into the lower to middle 90s. && .AVIATION...(For the 00Z TAFS through 00Z Monday evening) Issued at 551 PM CDT Sun Jun 24 2018 Just some isolated showers across parts of the area late this afternoon and not close enough to either airport to warrant including a mention into the early evening. VFR conditions expected through the night with a scattered to broken high level ceiling. This, along with winds at or above 10 knots just above the surface, should preclude any fog formation in the valleys despite the 24.18Z NAM forecast soundings showing a deep enough saturated layer to support fog development. The upper level low over the Nebraska panhandle will move east toward the Missouri River through Monday afternoon. This will cause an increase in heights over the area for much of the period that will help to keep the area dry. A short wave trough rotating northward around the low across western Iowa into southern Minnesota could be enough to help some showers/storms to begin pushing into the the western parts of the area late Monday afternoon. For now will keep the KRST forecast dry, but may need to add a VCSH/VCTS with later forecast for late Monday afternoon. && .HYDROLOGY... Issued at 248 PM CDT Sun Jun 24 2018 Minor flooding continues along the Mississippi River through this week. See the latest flood statements for current river forecasts. The potential for flooding continues into early this week...as another slow moving storm system spread showers and storms into the forecast area Monday night into Tuesday night. Precipitable water values of 1.5-2 inches will allow for the potential of heavy rainfall from the thunderstorms. With the moist soils from recent rains...river rises are expected and the possibility of flooding. && .ARX WATCHES/WARNINGS/ADVISORIES... WI...None. MN...None. IA...None. && SHORT TERM...DTJ LONG TERM...DTJ AVIATION...04 HYDROLOGY...DTJ
Hazardous Weather Outlook National Weather Service La Crosse WI 404 AM CDT Sun Jun 24 2018 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029- 032>034-041>044-053>055-061-251000- Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston- Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau- Adams-Vernon-Crawford-Richland-Grant- 404 AM CDT Sun Jun 24 2018 This Hazardous Weather Outlook is for portions of northeast Iowa...southeast Minnesota and southwest into central Wisconsin. .DAY ONE...Today and Tonight Isolated thunderstorms are possible today. Severe weather is not expected. .DAYS TWO THROUGH SEVEN...Monday through Saturday Thunderstorms are likely Monday night through Tuesday night. A few strong to potentially severe storms are possible Monday evening, mostly across parts of northeast Iowa, and again Tuesday, generally south of Interstate 90. The main threats will be damaging winds, large hail, and heavy rain. There are additional storm chances for Thursday through Sunday. .SPOTTER INFORMATION STATEMENT... A few local spotter groups may be needed Monday night and Tuesday. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Runoff from heavy rain events pushed the Mississippi River out of its banks in La Crosse. The river crested around a quarter of a foot above the flood stage at 12.17 feet on the 25th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2018Every state in 2018This day in weather historyWarnings in Wisconsin, 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: 765520.