(EXTRACTED FROM FXUS63 KARX 171057)
National Weather Service La Crosse WI
557 AM CDT Sun May 17 2026

Issued at 532 AM CDT Sun May 17 2026

Periodic storm chances bring off/on MVFR-LIFR probabilities
through the 17.12Z TAF period. Initial chances through the early
morning hours accompanying system shifting northeast through
central Iowa on radar imagery. Current confidence keeps thunder
chances primarily for eastern 2/3 of the forecast area, grazing
KRST TAF site. Overall storm system strength remains low-medium
confidence as it progresses northeast as it is expected to
weaken slightly.

A temporary reprieve in precipitation chances through the late
morning/afternoon shows highest probability for IFR ceilings
across northern half of the forecast area, affecting both KLSE
and KRST TAF sites. Temporary lifting of ceiling impacts before
additional storm chances progress from west to east this evening
and tonight. Initial line of storms weakens as it moves east
towards the area, lowering confidence in local impacts
especially along and east of the Mississippi River Valley.
Aviation impacts linger along western peripheral counties in
southeast Minnesota through Monday at the current forecast hour,
potentially farther southeast affecting locally smaller airports
and KRST TAF site.

Additional storm chances primarily Monday evening through the
nighttime hours with lower confidence during the afternoon as
storms are expected to form southwest of the local area and move
northeast.

JAR
HYDROLOGY...Baumgardt