114
FXUS63 KGRR 121051
AFDGRR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
651 AM EDT FRI JUN 12 2026
KEY MESSAGES
- DRY WEATHER TODAY THROUGH SATURDAY MORNING
- SHOWERS AND STORMS POSSIBLE SATURDAY AFTERNOON/NIGHT
- COOLER AND DRIER WEATHER EARLY NEXT WEEK
DISCUSSION
ISSUED AT 359 AM EDT FRI JUN 12 2026
- DRY WEATHER TODAY THROUGH SATURDAY MORNING
VERTICAL PROFILES ARE QUITE DRY TODAY, TONIGHT AND INTO SATURDAY.
MOISTURE IS BEING SWEPT TO THE EAST AND SOUTH WITH THE FRONTAL
PASSAGE CURRENTLY MOVING THROUGH THE AREA EARLY THIS MORNING. A
DRIER WESTERLY FLOW WILL PREVAIL INTO SATURDAY. SURFACE DEW POINTS
WILL HOLD IN THE MIDDLE TO UPPER 50S THROUGH MIDDAY ON SATURDAY
WHICH IS SIGNIFICANTLY DOWN FROM THE LOWER 70S OF THE PAST COUPLE
OF DAYS. IT WILL BE COOLER TODAY WITH HIGHS IN THE 70S.
- SHOWERS AND STORMS POSSIBLE SATURDAY AFTERNOON/NIGHT
A REINFORCING COLD FRONT WILL MOVE THROUGH THE AREA SATURDAY NIGHT
BRINGING WITH IT A CHANCE OF SHOWERS AND THUNDERSTORMS. THE DEEPER
MOISTURE WILL REMAIN SOUTH OF THE AREA, BUT ENOUGH OF A RETURN
HAPPENS TO AT LEAST GIVEN A CHANCE AT SOME THUNDER AGAIN. THERE IS
A MARGINAL CHANCE AT SEVERE WEATHER SATURDAY EVENING AND SATURDAY
NIGHT. THE FRONT WILL BE PUSHED BY A MID LEVEL UPPER WAVE SAGGING
INTO THE REGION FROM THE NORTH. SPC HAS US IN A MARGINAL THREAT
FOR SEVERE WEATHER. 850MB LOW LEVEL JET SPEEDS ARE 30-35 KNOTS AND
MUCAPE VALUES REACH NEAR 1,000 J/KG IN POCKETS. FAIRLY QUICK MID
LEVEL WINDS OF 40-50 KNOTS MAKE DAMAGING WINDS A THREAT BUT
THINKING THE OVERALL PROSPECTS FOR SEVERE WEATHER ARE ON THE LOW
SIDE FOR SATURDAY AFTERNOON THROUGH SATURDAY NIGHT. SOME OF THE
PRECIPITATION MAY LINGER ACROSS SOUTHERN LOWER MICHIGAN INTO
SUNDAY MORNING BEFORE ENDING.
- COOLER AND DRIER WEATHER EARLY NEXT WEEK
COOLER AND DRIER WEATHER WILL BEGIN THE WORK WEEK AS COOL RIDGING
BUILDS IN. 850MB TEMPERATURES ACTUALLY DROP INTO THE SINGLE DIGITS
ABOVE ZERO NEXT WEEK. THIS WILL KEEP HIGHS IN THE 70S AND LOWS IN
THE 50S. ANOTHER CHANCE FOR RAIN LOOKS TO COME TUESDAY INTO
WEDNESDAY WITH UPPER SHORTWAVES RIPPLING THROUGH THE TROUGHING
THAT WILL BE IN PLACE OVERHEAD.
AVIATION /12Z TAFS THROUGH 12Z SATURDAY/
ISSUED AT 650 AM EDT FRI JUN 12 2026
VFR WEATHER IS EXPECTED THE NEXT 24 HOURS WITH LITTLE IN THE WAY
OF CLOUD COVER. NO RESTRICTIONS TO VISIBILITY ARE ANTICIPATED.
WINDS WILL BE GUSTY FROM THE WEST TODAY AT 10-20 KNOTS WITH GUSTS
TOWARDS 25 KNOTS AT TIMES.
MARINE
ISSUED AT 359 AM EDT FRI JUN 12 2026
CURRENT HEADLINES, SMALL CRAFT ADVISORY AND BEACH HAZARDS
STATEMENT BOTH STILL LOOK GOOD WITH WESTERLY WINDS OF 10-20 KNOTS
WITH GUSTS OF 20+ KNOTS. WAVES ARE 4.3 FEET AT THE MID LAKE
SPOTTER BUOY AND 2-4 FEET AT OUR NEARSHORE BUOYS. CONDITIONS ARE
CLOSE TO CRITERIA AND CAN SEE THE WINDS AND WAVES STILL BOTH
COMING UP YET THIS MORNING. BEYOND THIS MORNING WE EXPECT
CONDITIONS TO DIP BELOW ADVISORY CRITERIA LEVELS FOR THIS
AFTERNOON THROUGH SATURDAY MORNING. WINDS AND WAVES WILL BE ON THE
INCREASE AGAIN FOR SATURDAY AFTERNOON/EVENING WHEN ANOTHER
ADVISORY/STATEMENT MAY BE NEEDED NORTH OF GRAND HAVEN.
GRR WATCHES/WARNINGS/ADVISORIES
MI...BEACH HAZARDS STATEMENT UNTIL NOON EDT TODAY FOR MIZ037-043-050-
056-064-071.
MARINE...SMALL CRAFT ADVISORY UNTIL NOON EDT TODAY FOR LMZ844>849.
DISCUSSION...DUKE
AVIATION...DUKE
MARINE...DUKE
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