Area Forecast Discussion
Issued by NWS Cleveland, OH

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FXUS61 KCLE 271749
AFDCLE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CLEVELAND OH
1249 PM EST THU NOV 27 2014

.SYNOPSIS...
A TROUGH WILL LINGER OVER THE EASTERN GREAT LAKES INTO TONIGHT.
MEANWHILE HIGH PRESSURE OVER THE MIDWEST WILL BUILD EAST ACROSS THE
OHIO VALLEY ON FRIDAY...REACHING THE EAST COAST FRIDAY NIGHT. A WARM
FRONT WILL LIFT ACROSS THE AREA ON SATURDAY WITH A COLD FRONT
PUSHING BACK SOUTH LATE SUNDAY.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
COLD FRONT IS SLIDING SOUTH AT THIS TIME AND IS JUST NORTHWEST OF
THE LAKE. SURFACE TROUGH REMAINS JUST NORTH OF THE FRONT. STILL
LOOKING AT SNOW SHOWERS WITH THE TROUGH LATE THIS AFTERNOON INTO
THE EVENING HOURS. OTHERWISE...NO OTHER MAJOR CHANGES TO THE FORECAST.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH SATURDAY NIGHT/...
UPPER LEVEL TROUGH SEEN ON WATER VAPOR OVER WISCONSIN WILL SWING
ACROSS THE AREA LATE THIS AFTERNOON INTO THIS EVENING. A
CONSIDERABLE INCREASE IN MID-LEVEL MOISTURE ARRIVES WITH THE 700MB
FRONT. IN FACT AS TEMPERATURES NEAR 700MB COOL BY 4C WE SEE A VERY
UNSTABLE LAYER DEVELOP FROM THE SURFACE TO 650MB. THERE WILL BE A
WINDOW OF GOOD LIFT IN THE DENDRITIC GROWTH ZONE AND EXPECT WE WILL
SEE A GOOD BURST OF SNOW SHOWERS THROUGH THE EVENING. SNOW RATES AND
ACCUMULATION SHOULD BE EFFICIENT DURING THIS WINDOW. THIS WINDOW
WILL BE FAIRLY SHORT LIVED AS MOISTURE IN THE 850-700MB LAYER REALLY
STRIPS AWAY BETWEEN 03-06Z. SNOW SHOWERS WILL BE ENHANCED BY THE
SURFACE TROUGH SWINGING THROUGH AND IT APPEARS THAT MOISTURE FROM
LAKE MICHIGAN WILL GET PULLED EAST ACROSS THE AREA AHEAD OF THE
TROUGH. RAISED POPS THROUGH ABOUT 04Z WITH ACCUMULATIONS OF 1 TO 3
INCHES ACROSS THE OHIO SNOW BELT AND 2 TO 4 INCHES INTO
PENNSYLVANIA. SNOW WILL HAVE AN EASIER TIME ACCUMULATING AS WE HEAD
INTO THIS EVENING. WE MAY END UP NEED A LAKE EFFECT SNOW
ADVISORY...WITH THE BEST CHANCE BEING FOR ERIE COUNTY PENNSYLVANIA.

SNOW ENDS ACROSS MOST OF OHIO PRETTY QUICKLY ON FRIDAY
MORNING...LINGERING THE LONGEST TOWARDS ERIE PENNSYLVANIA. AFTER A
COOL NIGHT...HIGHS ON FRIDAY WILL ONLY GET TO AROUND 30 DEGREES.
WARM AIR ADVECTION RAMPS UP ON FRIDAY NIGHT WITH ANOTHER ROUND OF
LIGHT SNOW POSSIBLE. MODELS ARE STRUGGLING WITH HOW MUCH WILL REACH
THE GROUND AFTER HAVING TO OVERCOME SOME DRY LOW LEVEL AIR. LOOKS
LIKE A PRETTY LIGHT QPF. WARMING TRENDS GETS UNDERWAY ON SATURDAY
AND TEMPERATURES WILL RECOVER INTO THE LOW TO MID 40S...COOLEST IN
PENNSYLVANIA.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
NOT MANY CHANGES TO THE LONG TERM THIS MORNING.  THE MODELS REMAIN
IN FAIR AGREEMENT DURING PERIOD.  SUNDAY WILL BE A VERY WARM DAY.
SHOWERS ARE LIKELY AHEAD OF A COLD FRONT THAT MOVE THROUGH LATER IN
THE DAY.  NOT SURE HOW FAST THE PRECIP WILL WIND DOWN BEHIND THE
FRONT.  BEST GUESS NOW IS THAT SOME SHOWERS COULD LINGER INTO MONDAY
MORNING.  DO NOT THINK IT WILL GET COLD ENOUGH FOR SNOW BEFORE THE
PRECIP ENDS.  AN AREA OF HIGH PRESSURE WILL SLIDE EAST ACROSS THE
REGION MONDAY NIGHT.  WILL KEEP TUESDAY DRY BUT WARM AIR ADVECTION
PRECIP COULD OCCUR AS EARLY AS TUESDAY EVENING.  WILL GO WITH CHANCE
POPS FOR TUESDAY NIGHT AND WEDNESDAY ALL AREAS.  TOUGH TO TELL THIS
FAR OUT IF THE PRECIP WILL BE SNOW OR RAIN AS TEMPS AND CRITICAL
THICKNESSES ARE RIGHT ON THE EDGE.  HOPEFULLY LATER SHIFTS WILL BE
BETTER ABLE TO PINPOINT THE PRECIP TYPE.  SUNDAY WILL SEE ABOVE
AVERAGE TEMPERATURES BUT THE REMAINDER OF THE PERIOD WILL AVERAGE A
LITTLE BELOW NORMAL.

&&

.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
ONE MORE TROUGH OF LOW PRESSURE TO DROP ACROSS THE AREA THIS
EVENING WITH ANOTHER ROUND OF SNOW SHOWERS. NOT SURE HOW MUCH LAKE
ENHANCEMENT THERE WILL BE AT KCLE KERI KYNG AS DRIER AIR IS TRYING
TO FILTER IN QUICKLY BEHIND THE TROUGH. CONDITIONS SHOULD IMPROVE
TO VFR LATE TONIGHT INTO FRIDAY MORNING AS THE RIDGE MOVES ACROSS
THE AREA. MID AND HIGH CLOUDS WILL INCREASE QUICKLY ON FRIDAY BUT
IT SHOULD REMAIN VFR UNTIL PATCHY LIGHT SNOW IS POSSIBLE FRIDAY
EVENING.

.OUTLOOK...NON-VFR POSSIBLE FRIDAY NIGHT INTO SATURDAY NE OH/NW
PA. NON-VFR DEVELOPING AGAIN SUNDAY CONTINUING INTO MONDAY WITH
-SHRA WITH THE NEXT FRONT.

&&

.MARINE...
HAVE HELD OFF ON A SMALL CRAFT FOR THE TIME BEING BUT ONE WILL
LIKELY BE NEEDED FOR THIS EVENING.  THE SMALL CRAFT CONDITIONS
SHOULD BE SHORT LIVED AS A SURFACE RIDGE WILL SLIDE EAST ACROSS THE
LAKE ON FRIDAY.  THE FLOW WILL RETURN TO THE S OR SW BEHIND THE
RIDGE.  SLOWLY INCREASING TO S TO SW FLOW WILL THEN CONTINUE TILL A
COLD FRONT CROSSES THE LAKE ON SUNDAY AFTERNOON AND EVENING.  MORE
SMALL CRAFT CONDITIONS COULD OCCUR BEHIND THAT FEATURE.  HIGH
PRESSURE WILL BEGIN TO BUILD OVER THE REGION FROM THE WEST ON
MONDAY.

&&

.CLE WATCHES/WARNINGS/ADVISORIES...
OH...NONE.
PA...NONE.
MARINE...SMALL CRAFT ADVISORY FROM 4 PM THIS AFTERNOON TO 10 AM EST
     FRIDAY FOR LEZ142>149.

&&

$$
SYNOPSIS...KEC
NEAR TERM...LOMBARDY
SHORT TERM...KEC
LONG TERM...KUBINA
AVIATION...KOSARIK
MARINE...KUBINA








USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.