Area Forecast Discussion
Issued by NWS Cleveland, OH

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000
FXUS61 KCLE 252043
AFDCLE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CLEVELAND OH
343 PM EST WED FEB 25 2015

.SYNOPSIS...
A COLD FRONT WILL CONTINUE TO MOVE SOUTH AND AWAY FROM THE AREA
OVERNIGHT. A WEAK AREA OF LOW PRESSURE WILL MOVE EAST ACROSS THE
OHIO VALLEY ON THURSDAY. HIGH PRESSURE WILL BUILD EAST ACROSS THE
REGION BY FRIDAY NIGHT AND OFF THE EAST COAST ON SUNDAY. AN UPPER
LEVEL DISTURBANCE WILL MOVE NORTHEAST ACROSS THE REGION SPREADING
MORE SNOW INTO THE AREA ON SUNDAY INTO MONDAY MORNING.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
CLOUDS WILL BEGIN TO THICKEN OVERNIGHT AS THE NEXT STORM SYSTEM
APPROACHES FROM THE WEST. DUE TO THE COLD AIR ADVECTION FROM THE
COLD FRONT THAT SLIPPED SOUTH ACROSS THE REGION THIS
MORNING...TEMPERATURES WILL LIKELY DROP INTO THE SINGLE DIGITS ONCE
AGAIN OVERNIGHT. AS THE STORM SYSTEM APPROACHES...MOISTURE
ASSOCIATED WITH THE LOW WILL SPREAD INTO THE REGION AND BRING WITH
IT A CHANCE FOR SOME LIGHT SNOW BY MORNING. THE BEST CHANCE WILL
HOLD OFF UNTIL THURSDAY. WINDS OVERNIGHT SHOULD BE LIGHT OUT OF THE
NORTHEAST AND GRADUALLY INCREASE TO AROUND 10 KNOTS BY SUNRISE.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH SATURDAY NIGHT/...
DEEP POSITIVELY TILTED TROUGH WILL SETTLE SOUTH OVER THE REGION ON
THURSDAY INTO FRIDAY. IN THE TROUGH WILL BE A VIGOROUS POSITIVE
VORTICITY MAXIMUM THAT WILL SLIDE SOUTH ACROSS THE AREA. COPIOUS
AMOUNTS OF MOISTURE WILL STREAM NORTHEAST ALONG THE UPPER LEVEL
TROUGH INTO THE FORECAST AREA. A VERY WEAK SURFACE LOW IS PROGGED TO
MOVE EAST ACROSS THE OHIO VALLEY REGION. THIS LOW WILL CAUSE A BRIEF
SWATH OF SNOW TO SPREAD ACROSS THE FORECAST AREA DURING THE DAY
THURSDAY. LOW PRESSURE SYSTEM AND ASSOCIATED SNOW WILL PULL OUT TO
THE EAST FAIRLY QUICKLY BY FRIDAY AS HIGH PRESSURE APPROACHES FROM
THE WEST. THE HIGH WILL SETTLE IN THROUGH SATURDAY BRINGING FAIR
WEATHER TO THE REGION ONCE AGAIN. ANOTHER UPPER LEVEL DISTURBANCE
WILL APPROACH THE AREA SATURDAY NIGHT AND FORCE MORE CLOUDS AND
EVENTUALLY SOME MORE SNOW INTO THE FORECAST AREA.

MODELS CONTINUE TO TREND TOWARD A COLDER SOLUTION BY SATURDAY NIGHT
AND THIS SHOULD KEEP ANY EARLY PRECIPITATION IN THE FORM OF SNOW.

OTHERWISE...TEMPERATURES WILL REMAIN IN THE SINGLE DIGITS OR COLDER
FOR LOWS DURING THE NIGHT AS COLD AIR ADVECTION TAKES PLACE. I AM
GOING TO KEEP THE DAY TIME HIGHS IN THE SINGLE DIGITS THURSDAY AND
FRIDAY BUT SOME WARMING WILL TAKE PLACE BY SATURDAY. EXPECTING HIGHS
BY SATURDAY IN THE MIDDLE TEENS TO LOWER 20S.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
THE FIRST ITEM OF INTEREST IS THE SYSTEM ON SUNDAY. THE MODELS HAVE
BEEN PERSISTENT WITH INCREASING FRONTOGENESIS IN A SPLIT FLOW WITH
SOME GULF MOISTURE BEING DRAWN NORTH AND AN INCREASING JET
ALOFT...ALMOST A COUPLED JET. NO BIG SURFACE LOW AND NO BIG TROUGH
ALOFT BUT THE MODELS HAVE BEEN POSTING ENOUGH QPF THAT AN ADVISORY
OR PERHAPS A LOWER END WINTER STORM WARNING MAY BE NECESSARY. THE
EVENT MAY DRAG OUT OVER 36 HOURS OR SO. ALSO WILL HAVE TO WATCH THE
THREAT OF A LITTLE SLEET (SOUTH) OR FREEZING DRIZZLE IF THE PRECIP
TAPERS FOR A WHILE. WITH THE DECENT JET ALOFT INTO MONDAY I WILL
KEEP A SMALL CHANCE FOR SNOW ACROSS NORTHEAST OHIO AND NORTHWEST
PENNSYLVANIA AS SOMETIMES THESE EVENTS CAN HAVE A LAST GASP TO THEM.
PLENTY TO CONSIDER BUT WAY TOO EARLY TO PIN DOWN ACTUAL VALUES IN
THE FORECAST AND WILL WATCH THE MODEL TRENDS AS WE APPROACH THE
WEEKEND.

NOT MUCH OF A BREAK IN THE ACTION AS A WAVE IS PROGGED TO DEVELOP ON
THE FRONT ON TUESDAY. THE MODELS ARE ALL OVER THE PLACE WITH THE
TRACK AND INTENSITY OF THE LOW. I SUSPECT THAT GIVEN THE LACK OF A
SIGNIFICANT SHORT WAVE THAT IT WILL NOT BE A MAJOR STORM WHICH MAY
FAVOR A WEAKER AND COLDER SOLUTION BUT ONCE AGAIN...WAY TO EARLY TO
TRY AND PIN DOWN. WILL MENTION A CHANCE OF MIXED PRECIP ACROSS THE
SOUTHEAST STATES JUST IN CASE. A TRAILING SHORT WAVE COULD PROLONG
THE CHANCE OF SNOW SHOWERS WEDNESDAY INTO THURSDAY NEXT WEEK.
TEMPERATURES STILL WELL BELOW NORMAL.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
RIDGING AND VFR CONDITIONS WILL PERSIST INTO THE EVENING
ALTHOUGH HIGH AND MID CLOUDS WILL INCREASE THIS AFTERNOON AND
ESPECIALLY TOWARD EVENING. LOW PRESSURE OVER THE PLAINS STATES WILL
DRIFT SOUTHEAST AND WEAKEN BUT A SWATH OF SNOW WILL SPREAD ACROSS
THE MIDWEST AND LOWER GREAT LAKES BY THURSDAY MORNING...THEN
GRADUALLY DISSIPATE AND MOVE SOUTHEAST THURSDAY AFTERNOON. MVFR
CEILINGS AND IFR VISIBILITY EXPECTED WITH THE STEADIER SNOW
THURSDAY MORNING.

.OUTLOOK...CONDITIONS IMPROVING TO VFR THURSDAY NIGHT. NON-VFR
DEVELOPING SUNDAY.

&&

.MARINE...
NO SIGNIFICANT WINDS ARE EXPECTED DURING THE FORECAST PERIOD ON LAKE
ERIE. WINDS WILL BECOME RATHER LIGHT AND MAINLY NORTH TO NORTHEAST
THE NEXT FEW DAYS AS YET ANOTHER ARCTIC HIGH PRESSURE AREA BUILDS
ACROSS THE GREAT LAKES. WINDS WILL BACK TO THE SOUTH AND SOUTHWEST
BY THE WEEKEND AHEAD OF THE NEXT COLD FRONT...THEN BACK TO THE
NORTHWEST AND THEN NORTH EARLY NEXT WEEK BEHIND THE FRONT.

&&

.CLE WATCHES/WARNINGS/ADVISORIES...
OH...NONE.
PA...NONE.
MARINE...NONE.

&&

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






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