Aikyam-Lab/Synoptic-Bench huggingface dataset:
KEEPING CLOUDS IN THE WEST AND SOUTH WHILE HIGH PRESSURE BUILDS IN THE NORTHEAST. AREAS NORTHEAST OF THE BOUNDARY WILL MOST LIKELY DROP TO OR BELOW FREEZING. A DRY DAY ON TAP FOR SUNDAY AS HIGH PRESSURE BUILDS EAST TO WEST.
SOUTHERLY WINDS WILL INCREASE ON SUNDAY AS A COLD FRONT APPROACHES. TEMPERATURES SHOULD BE 5 TO 10 DEGREES WARMER. IT WILL BE ANOTHER WARM SPRING DAY SUNDAY WITH HIGHS IN THE UPPER 70S NORTHEAST TO NEAR 90 DEGREES ACROSS THE NORMALLY WARMER SPOTS ACROSS THE WEST.
A COLD FRONT ASSOCIATED WITH THAT H5 UPPER WAVE WILL MOVE THROUGH EASTERN OK / NORTHWEST ARKANSAS SUNDAY.
710 PM EDT SAT MAR 28 2015 HIGH PRESSURE OVER INDIANA WILL MOVE TO THE SOUTHEAST STATES BY SUNDAY NIGHT.
Main concern continues to be the strong winds near the surface and clear air turbulence aloft as a cold front move across the area today.
IN WAKE OF LAST NIGHTS COLD FRONT THAT SWEPT THROUGH THE KEYS. COOLER AND DRIER AIR CONTINUE TO FILTER DOWN INTO THE KEYS ON FRESHENING NORTHERLIES. WITH DEW POINTS IN THE LOWER 50S. HIGH PRESSURE MOVING INTO THE SOUTHEASTERN UNITED STATES.
HIGH PRESSURE IS FORECAST TO BE POSITIONED OVER THE MID ATLANTIC BY SUNDAY AFTERNOON.
THIS WILL BE ESPECIALLY TRUE FOR OUR CUMBERLAND PLATEAU COUNTIES AS MANY SPOTS WILL SEE LOWS IN THE LOW 20S. THESE FREEZING TEMPERATURES WILL VERY HAZARDOUS FOR ANY SPRING VEGETATION THAT MAY BE EXPOSED TONIGHT. PLENTY OF SUNSHINE AND BREEZY WINDS VEERING AROUND TO THE SOUTH BUT RAIN IS ON DECK AGAIN FOR TOMORROW NIGHT AS A COLD FRONT DIGS INTO THE SOUTHEAST. CONDITIONS SHOULD BE QUIET TONIGHT AS HIGH PRESSURE CONTINUES TO BUILD INTO THE REGION.
540 PM MDT SAT MAR 28 2015 SHORT TERM FORECAST CONCERNS ARE THE TIMING OF THE COLD FRONT ACROSS THE FORECAST AREA TONIGHT AND THE WIND SPEEDS DURING THE DAY ON SUNDAY BEHIND THE FRONT. THIS IS IN ADVANCE OF THE COLD FRONT THAT MOVES ACROSS THE FORECAST AREA BETWEEN 06-12Z OVERNIGHT AND ACROSS THE PLAINS STATES THROUGH THE DAY ON SUNDAY AS THE UPPER SHORT WAVE MOVES THROUGH THE UPPER FLOW TOWARDS THE GREAT LAKES AND UPPER MISSISSIPPI VALLEY REGION.
1122 PM EDT SAT MAR 28 2015 LOW PRESSURE WILL TRACK SOUTH OF THE GULF OF MAINE INTO THE OPEN ATLANTIC THIS EVENING. CANADIAN HIGH PRESSURE WILL APPROACH OVERNIGHT AND CROSS THE REGION SUNDAY.
An associated cold front will move towards the forecast area tonight, and with the approaching wave, increasing ascent will overspread the region. With warmer air moving aloft, all precipitation will be in the form of liquid.
936 PM EDT SAT MAR 28 2015 UPPER LEVEL LOW PRESSURE WILL MOVE EAST OF THE AREA TONIGHT. A RIDGE OF HIGH PRESSURE WILL SLIDE EAST ACROSS THE STATE SUNDAY MORNING.
thus the high wind warning has been allowed to expire. Main concern continues to be the strong winds near the surface and clear air turbulence aloft as a cold front move across the area today.
AM REAL CONCERNED ABOUT THE WIND SHIFT BEHIND AN APPROACHING COLD FRONT AND THE GUSTY WINDS IMMEDIATELY BEHIND THIS FEATURE. GUSTY NORTHWEST WINDS WILL CONTINUE INTO SUNDAY AS PRESSURE RISES CONTINUE IN THE WAKE OF TONIGHT/S COLD FRONT.
With the exception of south central MO (south of the higher terrain. Much warmer temperatures will occur ahead of the front.
GUSTY NORTHWEST WINDS WILL CONTINUE INTO SUNDAY AS PRESSURE RISES CONTINUE IN THE WAKE OF TONIGHT/S COLD FRONT.
HAVE ALSO DROPPED THE HIGH RISK OF RIP CURRENTS FOR THE GULF. OTHERWISE, QUIET WEATHER THROUGH THE DAY TOMORROW WITH HIGH PRESSURE BUILDING IN. HIGH PRESSURE BUILDING IN WILL KEEP VFR CONDITIONS FOR SOUTH FLORIDA THROUGH THE TAF PERIOD. TODAY IS ABOUT 20F DEGREES COOLER AS NORTHERLY WINDS CONTINUE TO SEND COOL AIR STRAIGHT DOWN THE PENINSULA. TEMPS HAVE BEEN RUNNING A FEW DEGREES COOLER THAN FORECAST. HIGH PRESSURE OVER THE EASTERN U. THE TROUGH OVER THE EASTERN CONUS WILL LIFT OUT WITH A MORE QUASI-ZONAL FLOW TAKING OVER.
HIGH PRESSURE IS OVER THE AREA THIS MORNING WITH HIGH CLOUDS STREAMING INTO THE AREA. DENSE FOG AND STRATUS HAS DEVELOPED BELOW 1000 FT MSL IN THE LOWER COLUMBIA BASIN WITH A DENSE FOG ADVISORY ACTIVE THROUGH 10 AM PST. IT IS EXPECTED THAT THIS FOG SHOULD BURN OFF GIVEN THE HIGHER SUN ANGLE BY MIDDAY.
TODAY THROUGH SATURDAY NIGHT STRONG UPPER RIDGING CONTINUES ACROSS THE WRN CONUS TODAY. BUT SOME LOCATIONS MAY EVEN REACH INTO THE LOW 60S. ARCTIC HIGH PRESSURE WILL DROP FROM CNTRL CNDA TO THE NRN PLAINS/UPPER MIDWEST TONIGHT INTO EARLY SAT MRNG. SREF/NAM SOUNDINGS SUGGEST UPSLOPE FORCING ALONG WITH MOIST INVERSION/SHEAR COULD LEAD TO A PERIOD OF FREEZING DRIZZLE ALONG THE FOOTHILLS AND ADJACENT PLAINS ALONG THE ERN BLACK HILLS.
Benign weather will then prevail through Friday night with another opportunity to see light precip overnight Friday into Saturday behind a cold front passing through.
TEMPERATURES WILL WARM A LITTLE MORE INTO THE LOW TO MIDDLE 30S.
Also seen on satellite is an upper level low pressure system which has retrograded westward over northern Mexico to near the Gulf of California.
FAST MOVING BUT COMPACT LOW PRESSURE SYSTEM WILL DROP THROUGH THE GREAT LAKES LATE TONIGHT THROUGH SATURDAY. FOLLOWED BY AN ARCTIC HIGH PRESSURE SYSTEM. BROAD TROUGHING WILL REMAIN THE RULE ACROSS THE EASTERN HALF OF THE COUNTRY.
925 AM MST FRI FEB 13 2015 A HIGH PRESSURE SYSTEM WILL SLOWLY BUILD OVER THE REGION THROUGH THE WEEKEND.
MEANWHILE A PUSH OF COOLER AIR WILL BEGIN TO MOVE SOUTH OUT OF CENTRAL CANADA TODAY AND ACROSS THE NORTHERN AND CENTRAL PLAINS TONIGHT.
1245 PM MST FRI FEB 13 2015 A HIGH PRESSURE SYSTEM WILL SLOWLY BUILD OVER THE REGION THROUGH THE WEEKEND.
AS AN AREA OF LOW PRESSURE MOVES OUT OF THE GREAT LAKES AND ACROSS THE CENTRAL AND EASTERN OHIO VALLEY. AFTER THE TROUGH AXIS MOVES THROUGH AND NORTHWEST FLOW KICKS IN. WITH ISOLATED HIGHER AMOUNTS ALONG THE TALLEST RIDGES. SOME OF OUR NORTHEASTERN COUNTIES COULD SEE THE HIGHER SNOWFALL TOTALS AS WELL. TEMPERATURES WILL START OUT GENERALLY IN THE LOWER 20S SATURDAY MORNING. AFTER THE TROUGH AXIS MOVES THROUGH.
EXPECT TEMPS IN THE 60S ACROSS THE PLAINS TODAY WITH GENERALLY MID 60S OVER THE LOWER ARKANSAS RIVER VALLEY AND AT OR ABOVE 60 IN THE COS AREA.
HIGH PRESSURE OVER THE AREA WILL ALLOW FOR MAINLY LIGHT WINDS AND VFR CIGS.
1118 AM MST Fri Feb 13 2015 Dry and unseasonably warm conditions are expected today as a ridge of high pressure moves over the area. High pressure aloft will provide stable and dry conditions early in period. as cold front approaches from the north/northeast.
1259 PM EST FRI FEB 13 2015 A PRESSURE RIDGE EXTENDING THROUGH THE FORECAST AREA TODAY WILL BE SOUTH OF THE AREA TONIGHT. A REINFORCING COLD FRONT WILL APPROACH FROM THE NORTHWEST SATURDAY AND MOVE THROUGH THE AREA SATURDAY EVENING.
Surface winds will gradually veer to west and northwest tonight as a pre-frontal surface trof moves across Missouri and Illinois, while weak warm advection above the boundary layer persists. The anticipated strong Arctic cold front won't come into play until the predawn hours. Strong cold front to continue sinking south across forecast area Saturday morning.
204 PM MST FRI FEB 13 2015 UPPER LEVEL RIDGE REMAINS IN PLACE THROUGH THE REMAINDER OF TODAY AND TONIGHT. WEAK NORTHWEST FLOW WILL SWITCH TO MORE WESTERLY BY TOMORROW AFTERNOON AS THE RIDGE FLATTENS OUT AHEAD OF THE NEXT FEATURE. WARMER AIRMASS AND PARTLY CLOUDY SKIES TOMORROW WILL AID IN KEEPING TEMPERATURES MILD WITH HIGHS IN THE LOWER 60S FOR DENVER AND UPPER 30S TO LOW 40S FOR THE MOUNTAINS.
123 PM EST FRI FEB 13 2015 LOW PRESSURE WILL TRACK EAST OF NOVA SCOTIA TODAY WHILE HIGH PRESSURE BUILDS TOWARD THE REGION. HIGH PRESSURE WILL CROSS THE REGION TONIGHT THROUGH EARLY SATURDAY.
A MODEST LEE TROUGH WILL DEVELOP ON THE EASTERN PLAINS SATURDAY INTRODUCING SOME DOWNSLOPE WIND GUSTS EAST OF THE CENTRAL MT CHAIN AND ALONG AND N OF HIGHWAY 60 BY AFTERNOON. AS A HIGH PRESSURE RIDGE BUILDS IN FROM THE WEST.
THE BATTLE BETWEEN COLDER AIR TO OUR EAST AND WARMER DOWNSLOPE WINDS OFF THE ROCKIES WILL RESULT IN LARGE TEMPERATURE DIFFERENCES WEST TO EAST ACROSS OUR CWA AT TIMES.
With high pressure off to our east and a cold front approaching from the west, we'll have southwest breezes tonight that will help to keep temperatures up. Sheltered eastern valleys will likely drop into the lower 20s. The cold front will pass through around mid day Saturday.
THE LAST OF THE CLOUDS AND FLURRIES FROM THE PREVIOUS SYSTEM ARE NOW DISSIPATING AS HIGH PRESSURE BUILDS OVERHEAD. MID LEVEL ISENTROPIC ASCENT WILL OVERSPREAD THE AREA THIS EVENING AND TONIGHT AS A SEMI-WARM FRONT PUSHES EAST. MAIN WEATHER CONCERNS WILL COME SATURDAY AS AN EVEN SHARPER ARCTIC COLD FRONT PLUNGES SOUTHWARD. WHILE TEMPERATURES MAY GET TO OR JUST ABOVE FREEZING IN SOME SPOTS EARLY SATURDAY.
935 AM MST FRI FEB 13 2015 CONTINUED DRY AND MILD WEATHER WILL LEAD INTO THE WEEKEND AS HIGH PRESSURE REMAINS DOMINANT OVER THE GREAT BASIN FOR ANOTHER DAY. A LARGE OFFSHORE PACIFIC TROUGH CONTINUES TO PUMP MOISTURE INTO THE PACIFIC NORTHWEST AND INTO THE WESTERN RIDGE. HIGH CLOUDS WILL BEGIN TO INCREASE FROM THE NORTHWEST LATE TONIGHT AND SATURDAY AS THE RIDGE BEGINS TO GIVE WAY AS A WEAK TROUGH WORKS INTO AND OVER THE RIDGE. NAM12 AND GFS STILL IN FAIRLY GOOD AGREEMENT WITH EC BEING THE OUTLIER AS FAR AS PRECIP IS CONCERNED FOR THE NEXT COLD FRONT MOVING THROUGH.
1023 AM CST FRI FEB 13 2015 NO CHANGES WITH THE CURRENT FCST AS HIGH PRESSURE REMAINS LARGE AND IN CHARGE.
THE INITIAL COLD FRONT IS NOW ENTERING THE SOUTHERN VALLEY. THE FIRST COLD FRONT DURING THE DAY WILL BE RELATIVELY WEAK. THE GENERAL WEATHER WILL BE CLOUDS AND MAX TEMPERATURES ONLY 5F-10F WARMER THAN CURRENT VALUES. HIGH PRESSURE OVERHEAD ON SATURDAY.
HIGH PRESSURE OVER THE AREA WILL SLIDE EAST AND A COLD FRONT WILL APPROACH LATE.
321 PM CST Fri Feb 13 2015 A strong northwest flow pattern continued to dominate the central CONUS today, although slight height increases led to a temporary period of warmer temperatures as highs have ranged from the middle 40s in the eastern forecast area to mid 50s in north central KS. On Saturday morning, a strong cold front will move quickly through the forecast area with winds turning out of the north and gusting up to 30 mph at times.
A WEAK TROUGH IS ON TRACK TO MOVE ACROSS NW OREGON. COOS AND DOUGLAS COUNTIES WILL BE IN THE SOUTHERN END OF THIS TROUGH AND A FEW SPRINKLES ARE POSSIBLE THERE OVERNIGHT TONIGHT. WITH THE RIDGE STILL IN PLACE AIR MASS WILL CONTINUE TO BE STAGNANT WITH PERSISTENT VALLEY INVERSIONS AT NIGHT THROUGH MORNING HOURS. OFFSHORE HIGH PRESSURE WILL WEAKEN THIS AFTERNOON AND A DISSIPATING FRONT WILL MOVE THROUGH TONIGHT. HIGH PRESSURE WILL REBUILD THIS WEEKEND.
SOUTHERLY WINDS WILL BECOME NORTHWESTERLY BEHIND THE TROUGH PASSAGE. AN UPPER TROUGH OVER THE NORTHWESTERN TERRITORIES OF CANADA EARLY THIS MORNING. THE COLD FRONT WILL PUSH RAPIDLY SOUTHWARD THROUGH THE FORECAST AREA SATURDAY MORNING WITH BRISK NORTHERLY WINDS OF 15-30 MPH AND FALLING TEMPERATURES BEHIND IT.
339 PM CST FRI FEB 13 2015 WARM FRONT HAS PUSHED EAST OF THE AREA. COLD FRONT IS FAST APPROACHING FROM THE NORTH. MAIN FOCUS WILL BE PASSAGE OF THE COLD FRONT OVERNIGHT. THE EXCEPTION IS THE HIGHER TERRAIN OF THE WEST/SOUTHWEST WHERE CLOSER TO -5C IS EXPECTED. AS THE COLD FRONT SLIDES SOUTH EXPECT AN INCREASE OF LOWER CLOUDS AND INCREASING NORTHERLY/NORTHEASTERLY WINDS. SOME CONCERN INITIALLY COULD SEE SOME FREEZING DRIZZLE AS SATURATION OCCURS ABOVE WIDESPREAD ICE CRYSTAL DEVELOPMENT. HOWEVER LATER ARRIVE OF CLOUDS AND SLIGHTLY WARMER TEMPS ALOFT ACROSS FAR SW SHOULD HELP TO PUSH TEMPS TO AROUND 40.
/ISSUED 456 AM CST Fri Feb 13 2015/ (Today and Tonight) Pretty quiet in the short term, with much much warmer temperatures this afternoon. With much warmer near surface temperatures, light downslope winds, and more sunshine, guidance forecast highs from the mid 60s to near 70 don't look unreasonable for later today. Loss of the cloudcover will actually set the stage for a little cooler conditions tonight, as a better radiational cooling set up develops. A few of the normal low lying spots will drop into the upper 30s while more areas remain in the lower 40s.
THE WEATHER WILL GET DAYTIME HIGH TEMPERATURES THIS AFTERNOON ARE APPROACHING NEAR RECORD VALUES DUE TO STRONG MIXING IN THE LOWER PORTIONS OF THE ATMOSPHERE. MODELS ARE IN GOOD AGREEMENT IN BRINGING A BACK DOOR COLD FRONT WITH THE AIR BEHIND IT ORIGINATING FROM SOUTHERN SASKATCHEWAN AND MANITOBA. THERE IS NOT ANY DOUBT IT WILL GET COOLER IN THE OUR FAR EASTERN ZONES.
A WARM FRONT STRETCHES ACROSS NEBRASKA AND KANSAS. A COLD FRONT WILL BACK ACROSS THE SANDHILLS REGION OF NEBRASKA EARLY ON SATURDAY. ACROSS THE HIGHER TERRAIN OF OUR FAR WESTERN ZONES.
WILL INCLUDE A HAZARDOUS WEATHER OUTLOOK MENTION FOR AREAS NORTH OF PIT AND THE RIDGES.
400 PM CST FRI FEB 13 2015 ARCTIC HIGH PRESSURE WILL BUILD ACROSS THE WESTERN GREAT LAKES THIS EVENING AND SATURDAY. WITH THE HIGHEST ACCUMULATION MAINLY DURING THE MORNING HOURS. SATURDAY NIGHT WILL BE COLDEST OF THE CURRENT ARCTIC PUSH WITH TEMPS IN THE -15 TO -25 RANGE AS THE CENTER OF THE RIDGE MOVES OVER THE FORECAST AREA. AS THE RIDGE MOVES EAST OF THE REGION.
A COLD FRONT WAS MOVING THROUGH CENTRAL FLORIDA EARLY THIS MORNING. DEWPOINTS WERE GENERALLY IN THE LOW 20S ACROSS NORTH FLORIDA AND STILL AROUND 50 TO THE LOW 50S ACROSS CENTRAL FLORIDA SOUTHWARD. HIGHS WILL ONLY REACH THE MID 60S TO THE LOW 70S THIS AFTERNOON UNDER FULL SUNSHINE. WIND CHILLS MAY REACH THE LOWER 30S FOR A COUPLE HOURS ACROSS THE LAKE REGION. AND THE LOW TO MID 40S FOR THE EAST COAST METRO AREAS AS WINDS REMAIN SOMEWHAT ELEVATED OVERNIGHT.
MINIMUM WIND CHILLS ARE FORECAST TO REACH THE LOWER TO MID 30S ACROSS GLADES. WIND CHILLS COULD REACH AROUND 40 TO THE LOWER 40S IN THE WESTERN SUBURBS.
A WEAK LEE-SIDE TROUGH DEVELOPS OVER THE FRONT RANGE. THE REMNANTS OF THE LEE-SIDE TROUGH LINGER OVER THE CENTRAL PLAINS. COINCIDING WITH WINDS SHIFTING TO MORE ENE THROUGH THE DAY AS CANADIAN HIGH PRESSURE WORKS INTO AREA.
/ISSUED 457 AM CST FRI FEB 13 2015/ WITH THE EXCEPTION OF A DRY COLD FRONTAL PASSAGE SATURDAY AFTERNOON AND NIGHT. WARMER TEMPERATURES ANTICIPATED TODAY. AND ACROSS MOST OF THE AREA SATURDAY EXCEPT THE CNTRL AND ERN OK PNHDL AND THE NERN TX PNHDL AS THE AFOREMENTIONED COLD FRONT SHOULD MAKE IT INTO THAT PART OF OUR FCST AREA SATURDAY AFTERNOON.
THE GUNNISON AREAS IS EVEN AROUND 5 DEGREES 'WARMER'. CONTINUED DRY AND MILD WEATHER WILL LEAD INTO THE WEEKEND AS HIGH PRESSURE REMAINS DOMINANT OVER THE GREAT BASIN FOR ANOTHER DAY. A LARGE OFFSHORE PACIFIC TROUGH CONTINUES TO PUMP MOISTURE INTO THE PACIFIC NORTHWEST AND INTO THE WESTERN RIDGE. HIGH CLOUDS WILL BEGIN TO INCREASE FROM THE NORTHWEST LATE TONIGHT AND SATURDAY AS THE RIDGE BEGINS TO GIVE WAY AS A WEAK TROUGH WORKS INTO AND OVER THE RIDGE. NAM12 AND GFS STILL IN FAIRLY GOOD AGREEMENT WITH EC BEING THE OUTLIER AS FAR AS PRECIP IS CONCERNED FOR THE NEXT COLD FRONT MOVING THROUGH.
WITH CYCLONES OFF EITHER COAST. HIGHS WILL ONLY BE IN THE LOW SINGLE DIGITS ABOVE AND BELOW ZERO AS A MASSIVE 1045 MB HIGHS BUILDS IN.
OUT AHEAD OF A STRONG HIGH PRESSURE. H85 TEMPS WILL WARM ENOUGH TO PRODUCE HIGHS AT OR ABOVE FREEZING AT MOST LOCATIONS. WARMING WILL BE SHORT LIVED AS THE AFOREMENTIONED HIGH PUSHES A COLD FRONT THROUGH THE AREA TONIGHT.
ALONG WITH STRONG COLD ADVECTION TONIGHT BEHIND A COLD FRONT HIGHLIGHT THE SHORT TERM. A COLD FRONT WAS ALONG THE CANADIAN BORDER. THIS WILL ALLOW COOLER AIR TO CONTINUE TO DOMINATE THE NORTHEAST HALF OF THE STATE TODAY WHILE MILDER AIR DOMINATES THE SOUTHWESTERN HALF. TO THE LOW TO MID 30S ALONG THE MISSOURI RIVER. POSSIBLY MIXED WITH SOME FREEZING RAIN. WITH A CHANCE OF A MIX OF LIGHT SNOW AND LIGHT FREEZING RAIN IN THE WEST.
A weak cold front will move through the region tonight and into early Saturday bringing a chance of light precipitation.
Even modest mixing of the warmer air brings temps well into the 40s and have bumped values up slightly given latest trends. The fast upper flow brings a strong cold front south through the Northern Plains tonight, likely entering northern locations near sunrise. A strong cold front will move through quickly Saturday morning across the area with high temperatures occurring in the morning hours.
ALONG WITH POSSIBLE STRONGER OVERNIGHT MIXING HAS KEPT MORNING TEMPS A BIT WARMER FOR MUCH OF THE CWA EXCEPT FOR THE FAR NORTH HIGHER ELEVATIONS.
WE WILL RETAIN THE LEAN TOWARDS THE HIGH END OF OUR TEMPERATURE GUIDANCE.
257 PM CST Fri Feb 13 2015 Arctic cold front currently across the Upper Midwest will drop southward into north-central Illinois tonight, reaching the I-74 corridor by dawn Saturday. Overnight low temperatures will mainly be in the lower to middle 20s, but will drop into the teens north of a Canton to Bloomington-Normal line. The trailing cold front will dive across the area early Saturday, with temperatures falling through most of the day.
143 PM CST Fri Feb 13 2015 An upper ridge centered over the Western U.
Mid-level clouds will develop in the weak warm advection pattern, so partly to mostly cloudy will be the flavor of the day, with temps just barely cracking the freezing mark. By tonight a deep closed low will dive SSE off Hudson Bay into the Great Lakes, pushing an Arctic front into the Ohio Valley on Saturday. Ahead of the front, will lean on the high end of MOS guidance for temps, with an early drop this evening and steady or possibly rising temps toward Saturday morning. Temps will be just above freezing by late morning, but steady or falling through the afternoon under strong cold advection through a well mixed and windy (gusting 30-35 mph) boundary layer.
THIS TROUGH WILL CONT TO MOVE ACROSS PARTS OF THE FA THIS AFTN. EVEN WARMER ON SATURDAY AHEAD OF A STRONG COLD FRONT.
348 PM EST FRI FEB 13 2015 A BRIEF RIDGE OF HIGH PRESSURE WILL PROVIDE FOR CLEAR SKIES AND RELATIVELY LIGHT WINDS TO START TONIGHT.
THERE WILL BE A LIGHT DOWNSLOPE WIND THROUGH THE OVERNIGHT, WHICH COULD FAVOR WARMER LOWS. FORECAST SOUNDINGS ARE FAIRLY DRY WITH RELATIVELY LOW PWATS, SO AM A LITTLE CONCERNED THAT MINS COULD RADIATE COOLER THAN WHAT WARMER GUIDANCE SHOWS. OVERALL, SPLITTING HAIRS WITH THE MINIMUM TEMPERATURE GRID, BUT HAVE GONE IN THE MIDDLE OF THE ROAD BETWEEN THE WARMER AND COLDER SOLUTIONS - WITH VALUES IN THE THE LOW 30S. A COLD FRONT WILL MOVE SOUTH ACROSS WESTERN KANSAS SATURDAY AFTERNOON. FURTHER WEST AND SOUTH THE HIGHS SATURDAY AFTERNOON SHOULD CLIMB BACK AT LEAST INTO THE UPPER 50S TO LOWER 60S BASED ON BASED ON TIMING OF THE FRONTAL PASSAGE AND EXPECTED SKY COVER ALONG WITH THE 18Z AND 21Z SATURDAY NAM 850MB TEMPERATURES.
MEASURABLE SNOW FROM HERE ON OUT IS PRETTY MUCH OUT OF THE QUESTION AND WILL LIKELY TAKE OUT GRADUALLY OUT OF THE CWA AS FLURRIES TEMPS TODAY WILL MODERATE WITH THE SOUTHWEST HALF OF THE CWA MAKING IT JUST ABOVE FREEZING. BUT NOT STRONG ENOUGH TO REALLY MIX DOWN THE WARMER AIR. IN GENERAL THE PATTERN CHANGES LITTLE WITH A VERY AMPLIFIED UPPER RIDGE ACROSS THE WEST AND A TROUGH OVER THE GREAT LAKES AND THE EAST. AFTER TODAY WE ARE NOT GOING TO SEE TEMPS MUCH ABOVE FREEZING FOR A WHILE. TONIGHT INTO SATURDAY A TROUGH SWEEPS OUT OF ONTARIO ACROSS EASTERN MN AND WISCONSIN. FURTHER WEST A SUBTLE WAVE DRIFTS ACROSS THE REGION AHEAD OF THE TROUGH.
HIGH PRESSURE SHOULD LIMIT EASTWARD EXTENT -SN BAND WITH NEXT WEAK CLIPPER AND KEPT THE DAY DRY. HIGH PRESSURE SHIFTS EAST SATURDAY NIGHT.
333 PM EST FRI FEB 13 2015 LOW PRESSURE OVER THE GREAT LAKES WILL PUSH LIGHT SNOW INTO THE REGION TONIGHT AND SATURDAY. AN ARCTIC COLD FRONT WILL SWEEP THROUGH BRINGING SNOW SQUALLS. RESULT WILL BE WHITEOUT CONDS AND GUSTY WINDS AS THE HIGHER MID LVL WINDS MIX DOWN TO THE SFC. BHD THE FNT THE LOW BEGINS TO BOMB OFF THE NEW ENG CST WITH AN INV TROF BACK TO THE WEST OF THE FCST AREA.
1124 AM CST FRI FEB 13 2015 FOR 18Z TAFS /ISSUED 1019 AM CST FRI FEB 13 2015/ HIGH PRESSURE WILL CONTINUE TO SETTLE IN ACROSS THE FORECAST AREA TODAY. THE CENTER OF THE HIGH WILL MOVE SOUTH OF THE AREA BY LATE THIS EVENING.
HAVE MADE A MINOR UPDATE TO THE FORECAST FOR THIS MORNING TO INCLUDE DENSE FOG IN THE LOWER TREASURE VALLEY. UPPER RIDGE IN PLACE TODAY WILL WEAKEN TONIGHT AND SATURDAY AS AN UPPER LEVEL TROUGH PASSES BY TO THE NORTH. THE TROUGH WILL BRING SOME CLOUDS INTO THE AREA. MAINLY IN THE LOWER TREASURE VALLEY AND AROUND BAKER CITY AND MCCALL. MODEL CONSENSUS HAS A HIGH AMPLITUDE RIDGE AMPLIFYING OFFSHORE PUTTING SOUTHWEST IDAHO AND SOUTHEAST OREGON UNDER NORTH NORTHWEST FLOW ALOFT.
108 PM EST FRI FEB 13 2015 HIGH PRESSURE WILL SETTLE INTO THE REGION TODAY PROVIDING DRY WEATHER AND COLD TEMPERATURES. A REINFORCING SHOT OF COLD AIR WILL MOVE IN BEHIND A COLD FRONT SATURDAY. DIGGING S/W TROF TO DROP SE FROM CENTRAL CANADA THRU THE GREAT LAKES SATURDAY. EXPECT EARLY LOWS FROM THE UPPER TEENS NE TO THE LOWER 20S SW. ANOTHER ARCTIC COLD FRONT TO DROP SOUTH THRU ILN/S FA SAT MORNING/EARLY AFTN. MIXING TECHNIQUE SUGGESTS THAT WINDS MAY GUST UP TO 35 KTS WITH THE HIGHEST GUSTS OVER THE NORTH/NORTHEAST.
322 PM EST FRI FEB 13 2015 LOW PRESSURE WILL MOVE ACROSS THE CENTRAL LAKES SATURDAY DRAGGING ANOTHER ARCTIC COLD FRONT ACROSS THE AREA.
WINDS WILL START TO PICK UP LATE SATURDAY MORNING AHEAD OF AN APPROACHING COLD FRONT. TEMPERATURES WILL WARM A LITTLE MORE INTO THE LOW TO MIDDLE 30S.
In fact, the more noticeable feature may be breezy afternoon winds with the cold frontal passage Saturday afternoon/evening.
HIGHLY AMPLIFIED FLOW ACROSS THE US CONTINUES THROUGH THE NEXT 36 HOURS WITH THE DEEP TROUGH ALONG THE EAST COAST COUNTERACTED BY THE LARGE RIDGE JUST OFF THE WEST COAST. CAUGHT UNDER THE RIDGE IS A POTENT CUTOFF LOW JUST OVER THE BAJA CALIFORNIA PENINSULA. THE FLOW LOCALLY WILL BE DOMINATED MORE BY THE NWLY FLOW OVER THE TOP OF THE RIDGE. HIGH PRESSURE WILL BEGIN TO SHIFT OFF TO THE EAST. EXCEPT FOR COOLER MID 60S ALONG THE IMMEDIATE COAST.
TEMPERATURES TOMORROW HAVE SOME VARIABILITY THANKS TO THE TIMING OF THE APPROACHING UPPER LOW AND ASSOCIATED COLD FRONT. THE WINDS SHOULD CALM DOWN LATER IN THE OVERNIGHT HOURS AS HIGH PRESSURE AND A RELAXED PRESSURE GRADIENT SLIDE IN FROM THE NORTHWEST.
THOUGH A FEW PASSING CUMULUS DECKS ARE FOUND ACROSS THE LOWER KEYS AND WESTERN WATERS. AFTER A DISSIPATING COLD FRONT ARRIVES. AND TEMPERATURES SHOULD HOVER NOT MUCH WARMER THAN THEY ARE RIGHT NOW BEFORE FALLING LATE IN THE AFTERNOON.
HIGH PRESSURE WILL CONTINUE TO SETTLE IN ACROSS THE FORECAST AREA TODAY. THE CENTER OF THE HIGH WILL MOVE SOUTH OF THE AREA BY LATE THIS EVENING. HIGH PRESSURE MOVING ACROSS THE AREA TODAY WILL KEEP US IN COOL NORTHERLY FLOW AND TEMPERATURES THIS AFTERNOON WILL STRUGGLE TO MAKE IT MUCH ABOVE 40 DEGREES. THE HIGH SHIFTS EAST FRIDAY NIGHT INTO SATURDAY AND WINDS BECOME MORE SOUTHERLY ON SATURDAY.
Quick northwest flow aloft remains in place over the region with high amplitude ridge over the western U. and trough over the eastern U. The next cold front was pushing through the upper Mississippi valley region this afternoon and will be the main focus in the short term with temperatures/light snow or flurries on Saturday.
938 AM MST Fri Feb 13 2015 Dry and unseasonably warm conditions are expected today as a ridge of high pressure moves over the area. High pressure aloft will provide stable and dry conditions.
1125 AM CST FRI FEB 13 2015 QUIET AND WARMER WEATHER TODAY WITH WEST NORTHWEST DOWNSLOPING FLOW WHICH SHOULD LEAD TO SIGNIFICANTLY MILDER TEMPS.
252 PM EST FRI FEB 13 2015 SKIES ARE MOSTLY CLEAR ACROSS THE ISLAND CHAIN EXCEPT ACROSS THE LOWER KEYS WHERE OCCASIONALLY DENSE CUMULUS DECKS ARE FOUND OVER THE ISLAND CHAIN AND SURROUNDING WATERS. A COLD FRONT ENTERED OUR AREA AND WILL CONTINUE TO HOVER OVER THE STRAITS OF FLORIDA THROUGH TONIGHT AS IS GRADUALLY DISSIPATES OVER THE WARMER WATERS. THE DISSIPATION OF A MAINLAND THERMAL TROUGH WILL REINVIGORATE WINDS TONIGHT AS A MAINLAND SURGE WILL SPREAD ACROSS THE KEYS AND SURROUNDING WATERS.
TONIGHT SHOULD BE DRY AND COLD WITH AN INCREASE IN CLOUD COVER WITH THE APPROACH OF A COLD FRONT. WITH THE LOWER TROPOSPHERE BEING SO COLD, PRECIPITATION SHOULD BE IN THE FORM OF SNOW WITH ONLY MINOR ACCUMULATIONS EXPECTED. HIGH PRESSURE IN THE WAKE OF THE FRONT WILL PRODUCE DRY AND VERY COLD CONDITIONS FOR SATURDAY NIGHT.
1131 AM EDT TUE MAR 17 2015 COLD FRONT WILL MOVE ACROSS NORTHERN OHIO AND NW PA THIS MORNING. HIGH PRESSURE WILL BEGIN TO BUILD INTO THE AREA THIS AFTERNOON.