581
FXUS63 KDTX 301648
AFDDTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1248 PM EDT SAT MAY 30 2026
KEY MESSAGES
- DRY CONDITIONS THROUGH MONDAY, AND LIKELY REMAINING DRY THROUGH
THURSDAY.
- TEMPERATURES BRIEFLY DROP BELOW NORMAL TODAY, FOLLOWED BY A GRADUAL
WARMING TREND FOR THE LATTER HALF OF NEXT WEEK.
AVIATION
THE CENTER OF BROAD SURFACE HIGH PRESSURE BUILDS FROM NORTHERN
ONTARIO TODAY INTO THE CENTRAL GREAT LAKES TONIGHT. THE SYSTEM
PRODUCES A 10 TO 15 KNOT NE WIND TO REINFORCE COOL AND DRY AIR
ACROSS SE MI RESULTING IS MORE CLEAR SKY FOR THE REST OF TODAY
THROUGH TONIGHT. EVEN PROSPECTS FOR HIGH CLOUDS ARE LIMITED BY THE
BLOCKING MID LEVEL RIDGE POSITIONED FROM CENTRAL CANADA INTO THE
MIDWEST. THE SURFACE HIGH CENTER NEARBY TO THE NORTH LEADS TO LIGHT
AND VARIABLE WIND LATE TONIGHT AND SUNDAY MORNING BECOMING LAKE
BREEZE DOMINATED SUNDAY AFTERNOON.
D21/DTW CONVECTION...NO THUNDERSTORMS TODAY THROUGH SUNDAY.
DTW THRESHOLD PROBABILITIES
* NONE.
PREV DISCUSSION
ISSUED AT 338 AM EDT SAT MAY 30 2026
DISCUSSION...
MODEL CONSENSUS CONTINUES TO SUPPORT DRY CONDITIONS THROUGH MONDAY
AND LIKELY THROUGH THURSDAY. TEMPERATURES BRIEFLY DROP BELOW NORMAL
TODAY, FOLLOWED BY A GRADUAL WARMING TREND FOR THE LATTER HALF OF
NEXT WEEK WITH HIGHS RISING +1 SIGMA ABOVE NORMAL.
THE WELL ADVERTISED OMEGA BLOCK REMAINS INTACT TODAY AS THE
SHORTWAVE FEATURE WITHIN THE EASTERN TROUGH EXITS INTO THE ATLANTIC.
MEANWHILE, A LOW-LEVEL ANTICYCLONE MOVES IN FROM THE NORTH,
REINFORCING THE POST-FRONTAL COOL AND STABLE AIRMASS ASSOCIATED WITH
ENE FLOW. IN ADDITION TO VEERED WINDS, SURFACE DEWPOINTS HAVE
DROPPED SIGNIFICANTLY IN THE WAKE OF THE FRONT, FROM THE UPPER 40S
TO UPPER 20S/LOWER 30S. GUSTINESS SHOULD WANE DURING THE COURSE OF
THE MORNING, WITH JUST A SLIGHT UPTICK AGAIN THIS AFTERNOON DOWNWIND
OF LAKE HURON WHERE LOWER COLUMN FLOW WILL BE SLIGHTLY MORE
ELEVATED, ALONG WITH STEEPER LOW-LEVEL LAPSE RATES. ACTIVE
SUBSIDENCE AIDS IN THE DEVELOPMENT OF 1025 MB SURFACE HIGH PRESSURE
CENTERING OVER THE STRAITS WITH INFLUENCE EXTENDING ACROSS MOST OF
THE STATE INTO SUNDAY. THERMODYNAMICALLY, THE LAKE-MODIFIED AIRMASS
LIMITS HIGHS TO A FEW DEGREES BELOW NORMAL, MAINLY IN THE LOW 70S.
THE LONGWAVE RIDGE WILL TAKE PRECEDENCE OVER SOUTHEAST MICHIGAN ON
SUNDAY AS A SPLIT-FLOW CONFIGURATION EMERGES ALOFT. THE SURFACE
RIDGE WILL DRIFT SLIGHTLY SOUTH AND BECOME MORE DIFFUSE DURING THE
AFTERNOON, AS REFLECTED IN THE RELAXATION SURFACE PRESSURE GRADIENT.
TEMPERATURES RETURN TO NEAR-NORMAL WITH STRONG INSOLATION POTENTIAL.
THE NEXT EMBEDDED SPEED MAX WITHIN THE EASTERN TROUGH DROPS IN FROM
HUDSON BAY LATE SUNDAY INTO MONDAY. AS DISCUSSED PREVIOUSLY,
INSIGNIFICANT MOISTURE ADVECTION PRECLUDES PRECIPITATION CONCERNS
ONCE THE ARC OF CVA CROSSES THROUGH. INCREASING CONFLUENCE ALOFT AND
THE REDEVELOPMENT/AMPLIFICATION OF THE LONGWAVE RIDGE AXIS THROUGH
THE FIRST HALF OF THE WEEK SHOULD MAINTAIN RAIN-FREE CONDITIONS WITH
A STEADY WARMING TREND. HIGHS COULD BREAK INTO THE 80S AGAIN BY THE
LATTER HALF OF THE WEEK.
MARINE...
POST-FRONTAL NORTHEAST FLOW HAS LED TO A BREEZY OVERNIGHT PERIOD,
BUT WINDS WILL GRADUALLY SUBSIDE THROUGH THE MORNING. THIS ALLOWS
WINDS AND WAVES TO SUBSIDE BELOW SMALL CRAFT ADVISORY THRESHOLDS BY
MID-MORNING. WIND GUSTS MAY BRIEFLY TOUCH 25 KNOTS AGAIN THIS
AFTERNOON OVER INNER SAGINAW BAY WHERE WATER TEMPERATURES ARE WARMER
AND FLOW ALIGNS WITH THE LONG AXIS OF THE BAY. OTHERWISE, HIGH
PRESSURE BUILDS IN FROM CANADA AFFORDING AN EXTENDED STRETCH OF
QUIET AND DRY MARINE WEATHER WELL INTO NEXT WEEK.
DTX WATCHES/WARNINGS/ADVISORIES
MI...NONE.
LAKE HURON...NONE.
LAKE ST CLAIR...NONE.
MICHIGAN WATERS OF LAKE ERIE...NONE.
AVIATION.....BT
DISCUSSION...KGK
MARINE.......MV
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