textproduct: La Crosse
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Low confidence in precipitation/storms this afternoon/evening and through the longer term forecast.
- Besides Thursday, above normal temperatures through the 7 day forecast.
DISCUSSION
Issued at 1248 AM CDT Wed May 27 2026
Staying Well Above Normal Outside Of Thursday:
An anomalous area of higher mid level heights (90+ percentile) and anticyclonic flow observed over the Missouri River Valley in 27.00Z RAOBs will be the main driver of the local weather pattern and impacts through the weekend. Warmer than normal temperatures, spanning the 80 degree range outside of Thursday, currently forecasted over the next 7 days.
Low Confidence In Precipitation Today & Saturday:
The anomalous mid level anticyclone exerts influence through the lower levels later in the week (90th percentile SPC Climatology at MPX) and through the weekend over the Upper Mississippi River Valley, solidifying a meridionally oriented moisture boundary across the forecast area. Higher moisture will lie west of the Mississippi River Valley as backdoor cold front(s) of drier air sink southwest through southern Canada and the Great Lakes.
Initial storm and precipitation chances expected this afternoon/evening, similar to Tuesday's storm activity exhibiting an overall lack of shear and potentially ample instability under the ridge's influence with weak skirting waves. Outside of higher probabilities tonight, potentially into Thursday morning, confidence is low with long term global ensemble probabilities only grazing less than 30% for 0.01"+ in 24 hours on Saturday evening in the northern half of the forecast area for the rest of the 7 day forecast.
AVIATION /12Z TAFS THROUGH 12Z THURSDAY/
Issued at 605 AM CDT Wed May 27 2026
VFR conditions through the TAF period. Storms may develop this afternoon (20 to 40%) and continue into the evening mainly for areas east of the Mississippi River. Light and variable winds continue through the afternoon before switching to northeast winds later this evening.
ARX WATCHES/WARNINGS/ADVISORIES
WI...None. MN...None. IA...None.
IMPORTANT This is an independent project and has no affiliation with the National Weather Service or any other agency. Do not rely on this website for emergency or critical information: please visit weather.gov for the most accurate and up-to-date information available.
textproduct.us is built and maintained by Joshua Thayer.