Runoff from snowmelt caused some western Wisconsin river flooding to occur in late April along the Yellow River.
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The episode as NWS ARX wrote it up.
Runoff from snowmelt caused some western Wisconsin river flooding to occur in late April along the Yellow River.
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 Apr 24, 10:51 PM CST, 1 hour 19 minutes earlier.
Area Forecast Discussion National Weather Service La Crosse WI 1151 PM CDT Tue Apr 24 2018 .SHORT TERM...(Tonight through Friday) Issued at 220 PM CDT Tue Apr 24 2018 Ready for more springtime temperatures? You've got it. An overall quiet weather regime looks to continue for the remainder of the work week, with just a few items of interest, namely RH values tomorrow afternoon and some small shower chances toward Thursday and perhaps again Friday. A weak cold front cleared the area earlier today, tied to a pair of shortwaves just to our west - one expected to drop into the northern Great Lakes this evening, and another meandering through the Central Plains into tomorrow. Split forcing mechanisms around our area mean nothing more than maybe a sprinkle into the evening across the area as a batch of mid clouds work overhead, giving way to high pressure arriving Wednesday into Wednesday night. A touch cooler for Wednesday beneath transient thermal troughing, but modest mixing should give a boost into the 50s to probably lower 60s in some spots, but with sharp drying aloft, can envision dew points mixing out rather robustly for some continued lower end fire weather concerns. Otherwise, the focus will be on our next shortwave/cold front combo slated to arrive later Thursday. Forcing remains decent into central and northern Wisconsin though tapers with westward extent and honestly, moisture is pretty paltry given only weak return flow ahead of the boundary. Can't rule out a few showers, especially with the front coming through during "peak heating" of 21-00Z and some hints of maybe up to 100 J/kg surface-based CAPE (so nice to use that term again...and not "snow"). Current lower end chances for showers look pretty good at the moment, with temps likely rebounding nicely ahead of the boundary, before again dipping slightly behind into Friday. Have seen some hints of a stronger shortwave working through the northern Great Lakes into Friday afternoon, so will need to watch trends on that, but for now, any precip chances for Friday itself look to be well off to our east. .LONG TERM...(Friday Night through Tuesday) Issued at 220 PM CDT Tue Apr 24 2018 Let the quiet weather continue, with a downright beautiful weekend on tap across the entire region. Guidance trends the past few days continue to hint at building mid level ridging across much of the Plains, eventually spreading east in our direction by Sunday-Monday. End result should be plenty of sunshine and increasing warmer temperatures. In fact, it's not out of the question some spots could maybe push 80 degrees by Monday provided the current setup holds with 850mb temps spiking toward 12C, though we'll have to watch at least some small risk for some showers to develop within broader moisture return. Regardless, looking very spring-ish to wrap up the month of April. No complaints here. && .AVIATION...(For the 06Z TAFS through 06Z Wednesday evening) Issued at 1151 PM CDT Tue Apr 24 2018 Good VFR expected overnight thru Wed evening as high pressure and a deep, dry airmass build over the area. Any clouds thru 26.06z looking to be sct cirrus. Winds to be generally northerly at less than 10kts thru mid day Wed, becoming NW thru the afternoon, then light/variable into Wed night with the center of the night nearby/ overhead. && .ARX WATCHES/WARNINGS/ADVISORIES... WI...None. MN...None. IA...None. && SHORT TERM...Lawrence LONG TERM....Lawrence AVIATION.....RRS
Hazardous Weather Outlook National Weather Service La Crosse WI 515 AM CDT Tue Apr 24 2018 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029- 032>034-041>044-053>055-061-251200- 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- 515 AM CDT Tue Apr 24 2018 This Hazardous Weather Outlook is for portions of southeast Minnesota...northeast Iowa and southwest into central Wisconsin. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Snow melt runoff will lead to rises on area rivers and streams with minor flooding possible along some rivers over the next week. Those with river interests should pay close attention to water levels and forecasts. .SPOTTER INFORMATION STATEMENT... No action needed. .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 snowmelt pushed the Yellow River out of its banks in Necedah. The river crested almost two feet above the flood stage at 16.96 feet.
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, April 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: 749287.