795
FXUS63 KILX 092315
AFDILX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
515 PM CST MON DEC 9 2019
SYNOPSIS
ISSUED AT 316 PM CST MON DEC 9 2019
PATCHY FOG AND DRIZZLE ALONG WITH A FEW BRIEF SHOWERS WILL
CONTINUE INTO THE EVENING FOLLOWED BY MUCH COLDER TEMPERATURES AND
CLEARING SKIES OVERNIGHT BEHIND A STRONG COLD FRONT. MUCH COLDER
TEMPERATURES WILL ARRIVE OVERNIGHT, WITH LOWS DROPPING INTO THE
TEENS TO LOW 20S AND WIND CHILLS DROPPING INTO THE SINGLE DIGITS
TO LOW TEENS. MOSTLY CLEAR SKIES, LIGHTER WINDS, AND HIGHS IN THE
UPPER 20S TO LOW 30S ARE EXPECTED FOR TUESDAY.
SHORT TERM
(THIS EVENING THROUGH TUESDAY)
ISSUED AT 316 PM CST MON DEC 9 2019
AS OF 3 P.M. A COLD FRONT WAS NEAR I-57 PUSHING RAPIDLY EASTWARD,
WITH TEMPERATURES BEGINNING TO DROP RAPIDLY BEHIND THE FRONT. A
WEAK UPPER LEVEL TROUGH WITH A HISTORY OF SNOW SHOWERS IS TRAILING
THE SURFACE FRONT, HOWEVER RECENT TRENDS HAVE GREATLY DIMINISHED
THE ACTIVITY ALONG THE UPPER TROUGH AS THE MAIN LIFT SHIFTS
NORTHWARD. STILL, COULD BE A FEW BRIEF SHOWERS WELL BEHIND THE
FRONT, POSSIBLY MIXED WITH SNOW NORTH OF I-74 EARLY THIS EVENING.
STRONG WINDS HAVE DEVELOPED BEHIND THE FRONT, WITH 20 MPH WNW
WINDS AND GUSTS TO 30 MPH NOTED WEST OF THE ILLINOIS RIVER THIS
AFTERNOON. THE COLD AIR MASS AND WEAK SURFACE HIGH PRESSURE WILL
RESULT IN LESS WIND, MOSTLY CLEAR SKIES, AND HIGHS NEAR TO
SEVERAL DEGREES BELOW FREEZING TUESDAY.
LONG TERM
(TUESDAY NIGHT THROUGH MONDAY)
ISSUED AT 316 PM CST MON DEC 9 2019
A WEAK CLIPPER-LIKE SYSTEM IS GENERALLY PROGGED BY MOST MODELS TO
MOVE INTO THE AREA BETWEEN I-80 AND I-74 EARLY WEDNESDAY MORNING
FOR PERHAPS A LIGHT DUSTING OF SNOW, BUT OTHERWISE ANY SIGNIFICANT
DISTURBANCES LOOK TO PASS TO THE NORTH OF CENTRAL IL THROUGH
FRIDAY. FRIDAY NIGHT, A TROUGH PROPAGATING OUT OF THE NORTHERN
ROCKIES BRINGS A SLIGHT CHANCE FOR A MIX OF RAIN AND SNOW INTO
SATURDAY, THEN A STRONGER DISTURBANCE PROPAGATING OUT OF THE
CENTRAL ROCKIES COULD ARRIVE SUNDAY OR MONDAY. NEVERTHELESS, RUN-
TO-RUN CONSISTENCY HAS BEEN POOR WITH THESE EXTENDED FORECAST
DISTURBANCES SO CHANCES REMAIN AROUND 30 PERCENT OR LESS AT THIS
TIME. AFTER THE MIDWEEK COLD TEMPERATURES, NEAR NORMAL
TEMPERATURES ARE EXPECTED THURSDAY THROUGH MONDAY.
AVIATION
(FOR THE 00Z TAFS THROUGH 00Z TUESDAY EVENING)
ISSUED AT 514 PM CST MON DEC 9 2019
A COLD FRONT HAS PUSHED ACROSS THE CENTRAL ILLINOIS TERMINALS
LEAVING GUSTY NORTHWEST WINDS. ANTICIPATE WINDS TO CONTINUE
GUSTING INTO THE 25-30 KT RANGE MUCH OF THE OVERNIGHT HOURS, THEN
SHOULD GRADUALLY DIMINISH TUESDAY. IFR CONDITIONS HAVE MOSTLY
ENDED BEHIND THE FRONT, EXCEPT FOR A FEW LINGERING PATCHES, BUT
THE TREND SHOULD BE UP TO MORE SOLID MVFR UNTIL SKIES EVENTUALLY
SCATTER LATE THIS EVENING AND OVERNIGHT BACK TO VFR.
ILX WATCHES/WARNINGS/ADVISORIES
NONE.
SYNOPSIS...37
SHORT TERM...37
LONG TERM...37
AVIATION...DEUBELBEISS
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