356
FXUS63 KMPX 271042 AAA
AFDMPX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
542 AM CDT TUE OCT 27 2020
SHORT TERM
(TODAY THROUGH WEDNESDAY)
ISSUED AT 359 AM CDT TUE OCT 27 2020
THE AXIS OF A SURFACE HIGH PRESSURE RIDGE EXTENDS FROM WESTERN KANSAS
TO WISCONSIN EARLY THIS MORNING. IT WILL SETTLE FARTHER SOUTH TODAY
AS LOW PRESSURE OVER ALBERTA DRAGS A CHUNK OF WARMER, DOWNSLOPED
AIRMASS EASTWARD WITH IT. THE COMBINATION OF THE TWO SYSTEMS WILL
RESULT IN INCREASING SOUTHWESTERLY SURFACE FLOW TODAY. TEMPERATURES
WILL ONLY BE SLIGHTLY MILDER THAN YESTERDAY SINCE THE SOURCE REGION
OF THE AIRMASS IS FROM THE HIGH PRESSURE RIDGE. HOWEVER, THE
CANADIAN CLIPPER WILL TRACK TO THE NORTHERN GREAT LAKES TONIGHT AND
THE MILDER AIRMASS ACCOMPANYING IT WILL WORK IN FROM THE NORTHWEST.
TEMPERATURES WILL REMAIN STEADY FOR TONIGHT. A NICE REBOUND CAN BE
EXPECTED WEDNESDAY WITH HIGHS IN THE 40S HEAD OF THE TRAILING COLD
FRONT.
LONG TERM
(WEDNESDAY NIGHT THROUGH MONDAY)
ISSUED AT 359 AM CDT TUE OCT 27 2020
THE EXTENDED FORECAST WILL REMAIN QUIET WITH A WARMING TREND INTO
NOVEMBER. IT'LL BE SLIGHTLY COOLER ON THURSDAY WITH A SURFACE HIGH
PRESSURE MOVING EAST THROUGH THE REGION. THERE IS INCREASING
CONFIDENCE THAT SATURDAY'S HIGH TEMPERATURES WILL BE IN THE LOWER TO
MID 50S WITH BROAD WARM AIR ADVECTION AND SOUTHERLY FLOW AHEAD OF
COLD FRONT. A DRY FRONTAL PASSAGE IS LIKELY SATURDAY NIGHT WITH A
SURFACE HIGH BUILDING IN FOR SUNDAY. THE 00Z MODEL SUITE CONTINUED
THE TREND WITH A DEEPER MID-LEVEL TROUGH AND COLDER H850
TEMPERATURES. HIGHS COULD STRUGGLE TO HIT 40 WITH NORTHWESTERLY
WINDS MAKING IT FEEL COLDER THAN IT IS. TEMPERATURES WILL REBOUND
INTO THE LOWER 50S AS THE HIGH PRESSURE SLIDES EAST WITH A WARMER
RETURN FLOW DEVELOPING OVER THE UPPER MIDWEST.
AVIATION
(FOR THE 12Z TAFS THROUGH 12Z WEDNESDAY MORNING)
ISSUED AT 542 AM CDT TUE OCT 27 2020
VFR THROUGH THE PERIOD. CLOUDS WILL INCREASE ACROSS CENTRAL MN THIS
AFTERNOON, BUT DRY CONDITIONS ARE EXPECTED. SOUTH SOUTHWEST WINDS
WILL BECOME A BIT GUSTY THIS AFTERNOON.
KMSP...NO CONCERNS.
/OUTLOOK FOR KMSP/
WED...VFR. WIND WSW 10 KTS.
THU...VFR WITH MVFR CEILINGS POSSIBLE. WIND N AT 10-15 KTS.
FRI...VFR. WIND S AT 10-15 KTS.
MPX WATCHES/WARNINGS/ADVISORIES
MN...NONE.
WI...NONE.
SHORT TERM...BORGHOFF
LONG TERM...BPH
AVIATION...BORGHOFF
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