066
FXUS63 KMKX 311835
AFDMKX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
135 PM CDT TUE MAR 31 2026
KEY MESSAGES
- SCATTERED THUNDERSTORMS, POSSIBLY PRODUCING LARGE HAIL, WILL
CONTINUE THROUGH THE AFTERNOON.
- THERE IS A TREND NORTHWARD WITH THE WINTRY MIX OF SNOW, SLEET
AND FREEZING RAIN FOR WEDNESDAY NIGHT INTO EARLY THURSDAY
AFTERNOON. AREAS MAINLY NORTH OF THE HIGHWAY 18 AND INTERSTATE
94 CORRIDOR MAY BE AFFECTED. IMPACTS TO THE WEDNESDAY EVENING
AND THURSDAY MORNING COMMUTES ARE POSSIBLE IN THESE AREAS.
- THUNDERSTORMS ARE POSSIBLE THURSDAY AFTERNOON AND EVENING.
- ADDITIONAL CHANCES FOR RAIN AND A FEW THUNDERSTORMS FRIDAY
AFTERNOON INTO SATURDAY.
SHORT TERM
ISSUED 134 PM CDT TUE MAR 31 2026
THIS AFTERNOON THROUGH WEDNESDAY:
THE SLOW MOVING COLD FRONT IS NOW LOCATED OVER FAR SRN WI BUT
THE NEW AREAS OF CONVECTION FROM GREEN COUNTY TO OZAUKEE COUNTY
ARE ALONG THE 925-850 MB FRONT. SFC-850 MB FRONTOGENESIS ALONG
AND EAST OF THE 925-850 MB FRONT WILL CONTINUE TO GENERATE
SHOWERS AND THUNDERSTORMS THIS AFTERNOON AS ELEVATED CAPE OF
1000 J/KG REMAINS. THE ELEVATED FRONT DOES LINGER A BIT INTO THE
EVENING OVER FAR SE WI SO CHANCES FOR SHOWERS AND STORMS WILL
CONTINUE THERE. THE ACTUAL SFC COLD FRONT WILL SHIFT ENTIRELY
INTO NRN IL BY 20-21Z WITH CHILLY TEMPS TO FOLLOW. FARTHER TO
THE NORTH AND WEST OF MADISON, THE RAIN THREAT IS MOSTLY OVER
AND SOME SUNSHINE IS EXPECTED THIS AFTERNOON ALONG WITH WARMING
TEMPS NEAR 50F.
NNELY WINDS AND COLD ADVECTION WILL PREVAIL TNT INTO WED AS
POLAR HIGH PRESSURE MOVES ACROSS ONTARIO, REACHING JAMES BAY BY
00Z THU. LOW TEMPS IN THE LOWER TO MIDDLE 30S TNT THEN ONLY
WARMING INTO THE MIDDLE TO UPPER 40S OVER SOUTH CENTRAL WI ON
WED, WITH LOWER 40S IN THE EAST.
GEHRING
LONG TERM
ISSUED 134 PM CDT TUE MAR 31 2026
WEDNESDAY NIGHT THROUGH TUESDAY:
COMING SOON.
AVIATION
ISSUED 134 PM CDT TUE MAR 31 2026
A LINE OF STRONG THUNDERSTORMS WILL MOVE EAST TO SEWD ACROSS ERN
WI THIS AFTERNOON. VSBYS WILL DROP AS LOW AS 3/4-1SM WITH THE
HEAVY RAIN AND POSSIBLY SMALL HAIL. OTHERWISE CIGS OF 600-1900
FEET WILL PREVAIL OVER MUCH OF SRN WI WITH THE EXCEPTION OF
LOCATIONS WELL NORTH AND WEST OF MADISON WHERE SOME SUNSHINE IS
EXPECTED. THE LOW STRATUS WILL GRADUALLY CLEAR FROM WEST TO EAST
THROUGH THE LATE AFTERNOON AND EARLY EVENING, BUT AREAS OF MVFR
CIGS MAY LINGER OVER SE WI THROUGH THE NIGHT INTO THU AM.
GEHRING
MARINE
ISSUED 134 PM CDT TUE MAR 31 2026
A SLOW MOVING COLD FRONT OVER SOUTHERN LAKE MICHIGAN WILL REACH
THE SOUTHERN TIP OF THE LAKE LATE THIS AFTERNOON. MODEST
SOUTHERLY WINDS SOUTH OF THE FRONT WILL SHIFT NORTHERLY AND BECOME
BRISK INTO WEDNESDAY. NUMEROUS THUNDERSTORMS WILL CONTINUE OVER
THE SOUTHERN PORTION OF THE LAKE INTO EARLY THIS EVENING.
BREEZY EASTERLY WINDS ARE THEN EXPECTED WEDNESDAY NIGHT INTO
THURSDAY BETWEEN HIGH PRESSURE OF 30.7 INCHES EAST OF JAMES BAY IN
CANADA, AND LOW PRESSURE OF 29.4 INCHES LIFTING FROM THE CENTRAL
PLAINS INTO WISCONSIN. GUSTS COULD APPROACH GALE FORCE OVER FAR
NORTHERN LAKE MICHIGAN ON THURSDAY. THE BREEZY EASTERLY WINDS WILL
SHIFT SOUTHERLY FROM SOUTH TO NORTH ACROSS THE LAKE THURSDAY
AFTERNOON AND EVENING WITH THE PASSAGE OF A WARM FRONT, THEN
FOLLOWED BY THE COLD FRONT WITH WINDS SHIFTING WESTERLY LATE
THURSDAY NIGHT.
A SMALL CRAFT ADVISORY WILL REMAIN IN EFFECT FROM SHEBOYGAN TO
WINTHROP HARBOR FOR LATE THIS EVENING INTO LATE THU NT FOR
BRISK WINDS AND HIGH WAVES.
GEHRING
MKX WATCHES/WARNINGS/ADVISORIES
WI...NONE.
LM...SMALL CRAFT ADVISORY...LMZ643-LMZ644-LMZ645-LMZ646...10 PM
TUESDAY TO 4 AM FRIDAY.
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