Aikyam-Lab/Synoptic-Bench huggingface dataset:
THIS RELATIVELY WARMER AIR WILL HELP TEMPERATURES RISE TO AROUND 70 AGAIN TODAY OVER MUCH OF THE AREA AS IT MIXES DOWN TO THE SURFACE.
HIGH PRESSURE OVER THE AREA WILL SHIFT EAST TODAY AND TONIGHT AS AN UPPER LEVEL LOW MOVES INTO THE LOWER GREAT LAKES AND OHIO VALLEY.
KPNC HAS THE HIGHEST CHANCE OF THESE CEILINGS. A COLD FRONT WILL BRING A WIND SHIFT TO THE NORTH AND NORTHWEST AT ALL SITES. WEAK COLD FRONT WILL PASS THROUGH THIS EVENING AND OVERNIGHT WITH LITTLE MORE THAN SHIFT TO NORTH/NORTHWEST WIND DIRECTION FOR ABOUT 24 HOURS AND ONLY SLIGHT DECREASE IN TEMPS.
A LOT OF SNOW MELT WILL ALLOW TEMPERATURES TO BE A FEW DEGREES WARMER THAN YESTERDAY.
336 AM CST SUN DEC 6 2015 YESTERDAY/S COLD FRONT WILL NOT BE TOUGH ENOUGH TO BREAK OUR STRING OF ABOVE-NORMAL DECEMBER HIGH TEMPERATURES.
MORE SUN WITH SLIGHTLY COOLER TEMPERATURES EXPECTED ON MONDAY. HAVE AGAIN FOLLOWED THE WARMER SIDE OF TEMPERATURE GUIDANCE (TOWARDS MAVMOS) OVER THE MET/ECSMOS GIVEN THE CONTINUED SUPPORT FROM RAW MODEL SOUNDING OUTPUT AND THE WARM TEMPERATURE TREND FROM YESTERDAY'S OBSERVED VALUES.
400 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL REMAIN IN CONTROL THROUGH MONDAY.
HIGH PRESSURE IS BACK IN PLACE SUNDAY FOR A SHORT TIME IN BETWEEN PASSING TROUGHS. ENERGETIC FLOW ALOFT DUE TO AN ELEVATED TROUGH WILL ALLOW FOR STRONG MIXING ACROSS NE UTAH AND NW COLORADO AND WILL REFLECT ITSELF IN WINDS GUSTING TO 30 MPH OR SO SUNDAY AFTERNOON.
THIS EVENING THROUGH SUNDAY NIGHT UPPER TROUGH IS CROSSING THE CENTRAL CONUS. WHILE A RIDGE BUILDS OVER THE WEST. FOLLOWING THE COLD FRONT PASSAGE. TRANSIENT UPPER RIDGE WILL BEGIN MOVING OVER THE NORTHERN PLAINS TONIGHT.
SURFACE ANALYSIS THIS AFTERNOON PLACES A 1038 MB RIDGE OF HIGH PRESSURE OVER THE OHIO VALLEY/MID ATLANTIC STATES. BEHIND A MIDLEVEL TROF PASSAGE.
1156 PM CST SAT DEC 5 2015 EARLY AFTERNOON SATELLITE IMAGERY IDENTIFIED THE UPPER LEVEL TROUGH ACROSS THE CENTRAL CONUS. ANY PRECIPITATION THAT DEVELOPS WILL COME FROM THE LOW LEVEL MOISTURE WITH A STRATUS DECK THAT IS FORECAST TO DEVELOP LATER THIS EVENING AND OVERNIGHT. HIGHS ON SUNDAY WILL BE A FEW DEGREES COOLER THAN TODAY WITH LIGHT WINDS AND LITTLE MIXING. WITH WEAK UPPER LEVEL FLOW AND BROAD RIDGING PERSISTING THROUGH MUCH OF THE PERIOD.
In the Methow Valley, Twisp spotter reported 10 inches in 10 hrs with trees down, blocking the road.
A WEAK S/W TROUGH CURRENTLY MOVING ACROSS THE AREA IS PARTIALLY RESPONSIBLE FOR THIS MORNING/S CLOUD COVER WITH CLOUD COVER LIKELY TO PERSIST THROUGH A GOOD PORTION OF THE DAY /PRIMARILY MID/UPPER LEVEL CLOUD COVER/.
ENOUGH LIFT FROM RIGHT ENTRANCE REGION OF 300MB JET NORTH OF THE STATE IS EXPECTED TO PRODUCE SOME PATCHY DRIZZLE OR FREEZING DRIZZLE AS TEMPERATURES ARE EXPECTED TO OR JUST BELOW FREEZING IN MOST SPOTS. PATCHY DRIZZLE OR FREEZING DRIZZLE SHOULD END BY LATE SUNDAY MORNING ACROSS THE REGION. CLOUDY SKIES SHOULD KEEP TEMPERATURES LOWER THAN THE LAST FEW DAYS WITH HIGHS IN THE LOWER TO MIDDLE 40S.
1044 PM MST SAT DEC 5 2015 UPPER TROUGH IS CURRENTLY MOVING INTO NEBRASKA WITH SOME BREEZY CONDITIONS ACROSS THE PLAINS. TEMPS WILL BE 10-15 DEGREES WARMER ON SUNDAY.
Temperatures will be slightly cooler tomorrow with the added high cloudiness and passage of a weak cold front.
WIDESPREAD RIDGING WILL MOVE ACROSS THE FORECAST FOR SUN THRU THE BEGINNING OF THE WEEK. THIS IS REFLECTED IN THE COOLER MAX/MIN TEMPS FOR NEXT SAT. RIDGE AXIS MOVING ACROSS BY LATE AFTERNOON WILL RESULT IN LIGHT AND VARIABLE WINDS AFTER SUNSET.
Clouds have increase across the area overnight ahead of the short wave trough. Clouds will clear from west to east this afternoon after the trough axis passes over the area. Highs will still be able to warm into the low to middle 50s this afternoon. Lows tonight will drop into the lower 30s.
THERE WAS A BIT MORE STRATUS SURROUNDING THE COLD FRONT IN MN AND NW WISCONSIN. CONTINUING TO THROW THE HIGH LEVEL CLOUDS ACROSS NRN MICHIGAN. THE ACTUAL TROUGH AXIS AND SFC COLD FRONT ARRIVE LATE THIS AFTERNOON. THE TROUGH/WEAK FRONT CONTINUE TO MOVE OFF TO OUR EAST MONDAY.
HIGH PRESSURE WILL EXTEND ACROSS OUR REGION TODAY. LOW PRESSURE WILL DEVELOP OFF THE NC COAST ON MONDAY.
WITH CLOUD COVER INCREASING IN THE EVENING AS AN UPPER LOW APPROACHES FROM THE WEST. AN UPPER LOW MOVES THROUGH THE AREA TONIGHT. COULD SEE SOME POTENTIAL FOR PATCHY FOG WITH SOME SUBSIDENCE BEHIND THE UPPER LOW AND THIS COULD PERSIST INTO MONDAY MORNING.
TROUGH MOVING THROUGH THE AREA WITH FAIRLY DENSE AND WIDESPREAD FOG AHEAD OF THE TROUGH. BEHIND THE TROUGH. HAVE SIDED WITH COOLER GUIDANCE FOR TODAY WITH LOWER SUN ANGLE. EXPECT TEMPERATURES TO RISE AFTER MIDNIGHT AS STOUT SOUTH/SOUTHWEST FLOW INCREASES AHEAD OF A WEAK TROUGH PASSING THROUGH THE REGION MONDAY MORNING.
322 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL PROVIDE DRY. UPPER LOW MOVES SOUTHEAST ACROSS MID ATLANTIC STATES MONDAY. THIS PLACES FORECAST AREA IN WEAK TROUGHINESS WHILE WEAK SURFACE BOUNDARY SLIDES ACROSS THE AREA. TEMPS A LITTLE COOLER BUT STILL ABOVE NORMAL WITH HIGHS IN THE LOWER TO MID 40S. UPPER LOW MOVES TO MID ATLANTIC COAST MONDAY NIGHT.
High pressure is sliding off to the east this afternoon, with south/southeasterly winds across Central Illinois. High pressure and light winds setting up quite the inversion over the region yet again today, effectively trapping llvl moisture and setting up for foggy nights. Temps dropping into the lower 30s, just below freezing before dawn. Not much of a difference across the surface obs this afternoon, but the dense fog has been more likely in the east, closer to the ridge axis.
FCST SOUNDINGS HINT A FEW025 THROUGH SUNDAY AS A WEAK COLD FRONT CROSSES THE REGION.
COURTESY OF HIGH PRESSURE EXTENDING SW FROM THE MID ATLANTIC REGION. THE LIGHT SOUTHERLY FLOW AND THE CLOUDS ARRIVING SHOULD MAKE FOR A SOMEWHAT WARMER OVERNIGHT THAN HAS BEEN THE CASE THE PAST FEW NIGHTS.
309 AM CST SUN DEC 6 2015 08Z water vapor imagery shows an upper level trough over the mid MO river valley steadily moving east. For today and tonight, the weather should be fairly quite as the upper trough and associated forcing moves east of the forecast area. There could be a stray sprinkle through dawn as the trough axis passes overhead, but there remains a fair amount of dry air to overcome. There should be good insolation today and with models showing no cold air advection and even some modest warm air advection, think highs will again be in the lower to middle 50s.
440 AM EST SUN DEC 6 2015 SOUTHERLY FLOW WILL OCCUR TODAY ON THE BACK SIDE OF A HIGH PRESSURE SYSTEM TO THE EAST OF THE AREA. WEAK LOW PRESSURE WILL MOVE THROUGH THE REGION SUNDAY NIGHT INTO MONDAY.
A WEAK COLD FRONT WILL MOVE THROUGH THE AREA TODAY AND OFF THE COAST THIS EVENING.
SO DESPITE CURRENT READINGS LOWS IN THE LOW TO MID 30S ARE STILL ANTICIPATED. TROUGH WILL SWING EAST ON SUNDAY INCREASING CLOUDS ACROSS THE AREA BY AFTERNOON.
AND DEWPOINTS ARE IN THE LOW/MID 30S OVER THE SNOW FIELD THIS AFTERNOON. TEMPS WILL BE WELL ABOVE NORMAL GENERALLY IN THE LOW/MID 20S. TEMPERATURES WILL BE VERY SIMILAR TO TODAY AND PERHAPS A FEW DEGREES WARMER WITH 925MB TEMPS NEAR +10C BY AFTERNOON. THERE COULD BE A BRIEF WINDOW EARLY TUE MORNING FOR SOME FREEZING RAIN.
WITH 30S ACROSS N EL PASO COUNTY TO 50S ALONG THE LOWER ARK RIVER VALLEY AND 40S ALONG THE RATON MESA. ONE MINOR DISTURBANCE CROSSING THE NORTHERN ROCKIES OVERNIGHT SUNDAY INTO MONDAY MAY PRODUCE SOME STRONGER WINDS ACROSS THE HIGHER ELEVATIONS THROUGH MONDAY AFTERNOON.
A weak cold front moving into the area will reach KABI by around 08Z and slide south through the southern sites by mid morning. Models are still indicating a chance of MVFR ceilings spreading northward into the area before sunrise, but with the high clouds streaming across the area, this is looking a little harder to accomplish.
INITIAL WAVE WILL BE SUFFICIENT TO SEND A WEAK AND DRY COLD FRONT ACROSS THE AREA LATE SUNDAY. THIS BETWEEN LOW LEVEL HIGH PRESSURE BECOMING BETTER ORGANIZED OVER THE SOUTHEAST CONUS. AND THE APPROACH OF LOW PRESSURE AND ATTENDANT FRONT OVER THE PLAINS.
330 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL RIDGE INTO THE FORECAST AREA FROM THE NORTH TODAY WITH DRY CONDITIONS EXPECTED. LOW PRESSURE WILL DEVELOP OFF THE SOUTHEAST COAST MONDAY AND LIFT NORTHEASTWARD.
WARM AIR ADVECTION WILL ONCE AGAIN KICK IN AS A TROUGH DEVELOPS ACROSS EASTERN MONTANA AND SOUTHWEST SURFACE FLOW REMAINS ACROSS THE AREA. HIGH TEMPERATURES TODAY SHOULD BE A FEW DEGREES WARMER THAN YESTERDAY WITH CLEAR SKIES AND +10 C H850 TEMPS ADVECTING IN.
A TRANSITORY RIDGE WILL MOVE ACROSS THE NRN AND CNTRL HIGH PLAINS TODAY BRINGING A WARMUP TO THE REGION. A WEAK UPPER LEVEL TROUGH WILL TRAVERSE THE NRN PLAINS AND PUSH A WEAK COLD FRONT INTO WRN NEBR OVERNIGHT.
Latest water vapor imagery depicts an upper trough with a small closed circulation sliding eastward across the Great Plains.
A WEAK AREA OF LOW PRESSURE WILL MOVE THROUGH THE AREA SUNDAY NIGHT INTO MONDAY. AND A VERY SLIGHTLY WARMER/DRIER AIR MASS OVERALL COMPARED TO THIS MORNING. A WELL-DEFINED UPPER LOW WILL MOVE EAST THROUGH THE SOUTHERN GREAT LAKES / NORTHERN OHIO VALLEY. THIS LOW IS NOT PARTICULARLY STRONG. SOME WEAK COLD ADVECTION BEHIND THE UPPER LOW WILL KEEP TEMPERATURES IN THE MID 40S ON MONDAY.
105 AM MST SUN DEC 6 2015 ABOVE NORMAL TEMPERATURES WILL PERSIST ACROSS THE REGION THROUGH MUCH OF THE WEEK AS HIGH PRESSURE REMAINS IN CONTROL OF THE WEATHER.
1037 PM MST SAT DEC 5 2015 LATEST SATELLITE AND UPPER AIR DATA SHOW AN UPPER LEVEL SHORT WAVE TROUGH MOVING ONTO THE PLAINS. AHEAD OF THE TROUGH WAS A PLUME OF AMBLE WATER VAPOR. TO THE WEST DRIER AIR WAS ACCOMPANYING A SHORT WAVE RIDGE. AT THE SURFACE A PRE-FRONTAL TROUGH WAS MOVING ACROSS THE TRI-STATE AREA WITH A COLD FRONT LIKELY LOCATED OVER THE NEBRASKA PANHANDLE. BEHIND THE TROUGH NORTHERLY WINDS WERE GUSTY. LOWS WILL BE COOLER THAN LAST NIGHT AS A COOLER AIR MASS MOVES IN BEHIND THE FRONT. SUNDAY WARMER AIR RETURNS AS AN UPPER LEVEL SHORT WAVE RIDGE BUILDS INTO THE AREA.
May be enough sun across southeast Illinois this afternoon for temperatures to warm into the lower 50s, while further west and north where cloud cover will be thicker and more persistent, highs will range from the mid to upper 40s. Tonight's forecast will see an upper low departing to the east of Illinois.
LIGHT EAST WINDS PREVAIL THROUGH THE NIGHT BEFORE SHIFTING NORTH AFTER MIDNIGHT AS REINFORCING HIGH PRESSURE MOVES INTO PLACE. WEAK H5 RIDGE BEGIN TO GET PUSHED EWD BY THE TROUGH CURRENTLY ACROSS THE ROCKIES. THIS TROUGH WILL PROGRESS QUICKLY ACROSS THE US. A WEAK COLD FRONT WILL GET DRAGGED ACROSS TEXAS TONIGHT AND TOMORROW.
1159 PM EST SAT DEC 5 2015 AVIATION A QUIET WEATHER PATTERN WILL CONTINUE FOR SOUTHWEST LOWER MICHIGAN WITH NO MAJOR LOW PRESSURE SYSTEMS EXPECTED OR COLD INTRUSIONS OF AIR IN THE NEAR FUTURE.
41 DRY AND PLEASANT CONDITIONS LOOK TO PERSIST THRU FCST PERIOD AS REGIME STAYS DOMINATED BY EAST CONUS RIDGE. OTHERWISE TEMPS SHOULD BE NEAR TO SLIGHTLY BELOW CLIMO NORMS TONIGHT THEN WARMER MORE SO ACROSS NORTH GA SUNDAY NIGHT WITH AFOREMENTIONED CLOUD COVER.
1124 PM CST SAT DEC 5 2015 WEAK COLD FRONT HAS MOVED PAST ALL THREE TERMINALS. A COLD FRONT WILL MOVE THROUGH THE FCST AREA THIS EVENING WITH WINDS SWITCHING TO NORTH 03Z GIVE OR TAKE AN HOUR. /ISSUED 259 PM CST SAT DEC 5 2015/ UPPER TROUGH WILL PUSH EAST ACROSS THE TEXAS PANHANDLE AND OKLAHOMA THIS EVENING. WHILE LOCALES IN THE SOUTHEASTERN SOUTH PLAINS INTO THE ROLLING PLAINS REMAIN IN THE LOW-MID 30S.
SOME CLOUDS WILL DEVELOP AROUND THE PERIPHERY OF THE RIDGE.
As an upper level trough passed eastward out of the Southern Plains last night, a weak dry cold front pushed south through the forecast area. Expect north winds 5 to 15 mph today in the wake of the cold front with winds becoming light and variable tonight. Temperatures today will be seasonal with afternoon highs in the lower 60s.
AN UPPER LOW WILL TRACK THROUGH THE MID MISSISSIPPI VALLEY TODAY AND INTO THE OHIO VALLEY TONIGHT. THERE IS A WEAK TROF REFLECTED AT THE SURFACE THAT WILL MOVE THROUGH THE MIDSOUTH LATE THIS AFTERNOON INTO THIS EVENING SHIFTING WINDS FROM LIGHT SOUTH TO LIGHT WEST/NORTHWEST. A BATCH OF STRATOCU WILL MOVE THROUGH NE MISSISSIPPI THIS MORNING WHILE ANOTHER MOVES ACROSS THE NORTHERN TIER OF COUNTIES WITH THE UPPER TROF ITSELF LATER THIS AFTERNOON AND THIS EVENING. MOS TEMPS CAME IN A BIT WARMER AND GIVEN HIGHS YESTERDAY AND PARTIAL SUNSHINE DECIDED TO BUMP TEMPS UP A FEW DEGREES. WEAK HIGH PRESSURE WILL BUILD IN AFTER THE SYSTEM DEPARTS THIS EVENING.
107 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL PROVIDE DRY.
EVEN THOUGH A TROUGH AXIS AND FRONTAL BOUNDARY WILL SHIFT THROUGH THE REGION TODAY. AN UPPER LEVEL TROUGH AXIS IS SET TO SLIDE SOUTHEAST ACROSS THE REGION OVERNIGHT. TEMPERATURES THIS EVENING WILL LIKELY BE ABOVE FREEZING DURING THE BEST CHANCE FOR PRECIPITATION WHICH WILL RESULT IN RAIN. WEAK RIDGING WILL BUILD BACK ACROSS THE PLAINS FOR TOMORROW. WHICH WILL RESULT IN 10 TO 15 DEGREES OR MORE WARMER THAN NORMAL.
1130 PM EST SAT DEC 5 2015 HIGH PRESSURE CENTERED SOUTH OF NEW ENGLAND WILL REMAIN STATIONARY THROUGH SUNDAY. A WEAK COLD FRONT WILL DROP SOUTH THROUGH THE REGION SUNDAY NIGHT AND MONDAY FOLLOWED BY ANOTHER AREA OF HIGH PRESSURE.
THIS WILL HAPPEN AS A WEAK COLD FRONT CROSSES THE REGION. THIS WILL HAPPEN AS A WEAK COLD FRONT CROSSES THE REGION.
Briefly cooler temperatures and northwest winds will follow behind the system, but warmer temperatures will return quickly as flow returns to the southwest.
309 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL HOLD SOUTH OF NEW ENGLAND TODAY. A WEAK COLD FRONT WILL SAG SOUTH FROM CANADA INTO NORTHERN NEW ENGLAND TONIGHT AND EARLY MONDAY. HIGH PRESSURE BUILD IN FROM THE WEST MONDAY AFTERNOON THROUGH MONDAY NIGHT.
A WEAK UPPER RIDGE FROM THE SOUTHERN MISSISSIPPI RIVER VALLEY NORTHWARD TO THE OHIO RIVER VALLEY WILL SHIFT EAST OVER THE EASTERN U. AN UPPER TROUGH OVER THE NATIONS MIDSECTION WILL MOVE EAST OVER THE MISSISSIPPI RIVER VALLEY.
SOME CLOUDS WILL DEVELOP AROUND THE PERIPHERY OF THE RIDGE. /ISSUED 152 PM CST SAT DEC 5 2015/ A FAIRLY ZONAL UPPER LEVEL FLOW PATTERN THROUGH THE FORECAST PERIOD WITH SEVERAL FAST MOVING SHORT WAVE TROFS TO PASS NORTH OF ALABAMA. THE STRONGEST OF THE SHORT WAVE TROFS WILL PASS TO THE NORTH OF ALABAMA SUNDAY NIGHT AND PUSH A WEAK COLD FRONT THROUGH CENTRAL ALABAMA ON MONDAY.
A THIN BAND OF MOISTURE ACCOMPANIES THIS TROUGH RESULTING IN A SCATTERED TO BROKEN DECK OF CIRRUS CLOUDS ACROSS PARTS OF NORTH TEXAS. THIS THIN CLOUD COVER IS HELPING TO KEEP TEMPERATURES A LITTLE WARMER THIS MORNING BUT SKIES ARE EXPECTED TO CLEAR OVER THE NEXT SEVERAL HOURS AND A WEAK COLD FRONT WILL MOVE THROUGH THE AREA. HIGHS TODAY WILL ONCE AGAIN BE NEAR SEASONAL NORMS IN THE LOW 60S WITH MOSTLY SUNNY SKIES.
1238 AM EST SUN DEC 6 2015 HIGH PRESSURE DOMINATES THE WEATHER PATTERN THROUGH MONDAY.
1015 PM CST SAT DEC 5 2015 THE EVENING WATER VAPOR IMAGERY REVEALS A PROGRESSIVE UPPER TROUGH SHIFTING E ACROSS THE CNTRL PLAINS S INTO NW TX THIS EVENING. WITH THE CIRRUS SHIELD BEGINNING TO THICKEN AHEAD OF THE TROUGH OVER N TX/ERN OK/MUCH OF AR. SFC RIDGING THAT HAS BEEN IN PLACE ACROSS THE REGION THE LAST FEW DAYS HAS BEGUN TO WEAKEN. AND SHOULD COMPLETELY DIMINISH BY DAYBREAK SUNDAY AS A WEAK COLD FRONT BEGINS TO SHIFT SE ACROSS N TX/ERN OK/WRN AR. THIS CIRRUS IS MARKEDLY THINNER FARTHER E OF THE TROUGH OVER DEEP E TX/N LA.
HIGH PRESSURE WILL MAINTAIN PRECIPITATION FREE WEATHER WITH MODERATING TEMPERATURES. PERHAPS DUE TO A WEAKENING OF THE LOW LEVEL INVERSION.
149 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL RIDGE INTO THE FORECAST AREA FROM THE NORTH TODAY RESULTING IN DRY CONDITIONS. LOW PRESSURE WILL DEVELOP OFF THE SOUTHEAST COAST MONDAY AND LIFT NORTHEASTWARD.
/ISSUED 1015 PM CST SAT DEC 5 2015/ THE EVENING WATER VAPOR IMAGERY REVEALS A PROGRESSIVE UPPER TROUGH SHIFTING E ACROSS THE CNTRL PLAINS S INTO NW TX THIS EVENING. WITH THE CIRRUS SHIELD BEGINNING TO THICKEN AHEAD OF THE TROUGH OVER N TX/ERN OK/MUCH OF AR. SFC RIDGING THAT HAS BEEN IN PLACE ACROSS THE REGION THE LAST FEW DAYS HAS BEGUN TO WEAKEN. AND SHOULD COMPLETELY DIMINISH BY DAYBREAK SUNDAY AS A WEAK COLD FRONT BEGINS TO SHIFT SE ACROSS N TX/ERN OK/WRN AR. THIS CIRRUS IS MARKEDLY THINNER FARTHER E OF THE TROUGH OVER DEEP E TX/N LA.
BUT THAT APPEARS TO BE SHIFTING EAST AND DISSIPATING AS DRIER SURFACE AIR WORKS IN BEHIND A SURFACE TROFPA NOW LOCATED OVER MINNESOTA. DEW POINTS ARE IN THE LOWER 30S. SUNDAY WILL BE A RATHER WARM DAY ACROSS MUCH OF THE REGION AS UPPER LEVEL RIDGING SLIDES THROUGH.
FLAT UPPER LEVEL RIDGE BUILDS OVER NM SUNDAY. AN UPPER LEVEL TROUGH IS CURRENTLY RACING ACROSS THE ROCKIES. BUT THROUGH THE OVERNIGHT A COLD FRONT WILL SPILL THROUGH THE EASTERN PLAINS OF NEW MEXICO WHERE SOME LINGERING STRONG GUSTS WILL BE FOUND. WHILE SOME COOLER TEMPERATURES WILL BE FOUND IN EASTERN NEW MEXICO ON SUNDAY. A BUILDING RIDGE WILL KEEP CONDITIONS TRANQUIL AND DRY.
1117 PM CST SAT DEC 5 2015 COLD FRONT HAS WORKED THROUGH THE CWA WITH NORTHWEST BEHIND THE FRONT. AS HIGH PRESSURE BUILDS IN. ALTHOUGH POCKETS OF COOLER TEMPS. TOMORROW WINDS BECOME SOUTHWESTERLY AND UPPER LEVEL RIDGE BUILDS IN BEHIND DEPARTING TROUGH. TEMPS SHOULD SURGE INTO THE LOWER TO MID 50S FOR MOST AREAS. SUNDAY NIGHT SEES A WEAK UPPER TROUGH MOVING INTO THE NORTHERN PLAINS IN ZONAL FLOW.
THE CHALLENGES TODAY CONCERN ANY EXPANSION OF DENSE FREEZING FOG VERY EARLY THIS MORNING. AREAS OF DENSE FREEZING FOG WERE OVER NORTHWEST OHIO AND EXTENDED INTO NORTHEAST INDIANA EARLY THIS MORNING. KEPT THE ONGOING FREEZING FOG ADVISORY FOR ALL OF NORTHWEST OHIO AND ADJACENT AREA OVER LOWER MICHIGAN AND NORTHEAST INDIANA. THE WEAK FLOW AND MILD PACIFIC ORIGIN AIR HAS LED TO IMPRESSIVE INVERSIONS AND A DIRTY RIDGE FOR PAST SEVERAL DAYS. LOW LEVEL WIND FIELD BECOMES LIGHT AGAIN WITH HIGH PRESSURE BUILDING IN AND WEAK FLOW ALOFT COMBINED WITH LINGERING LOW LEVEL MOISTURE. TIMING SUGGEST WE MAY SEE AN UPSTREAM STRATUS DECK DEVELOP TONIGHT AND ADVECT IN BEHIND DEPARTING UPPER LOW AND REMAIN TRAPPED ONCE AGAIN.
STRONG HIGH PRESSURE CENTERED OVER THE AREA WILL WEAKEN AND DRIFT EAST THROUGH TONIGHT.
245 AM EST SUN DEC 6 2015 LATEST SURFACE ANALYSIS SHOWS A RIDGE OF HIGH PRESSURE ANCHORED ALONG THE MID AND UPPER ATLANTIC COAST. A WEAKENING RIDGE WAS NOTED OVER THE STATE WHILE A LONGWAVE TROUGH WAS DEEPENING OVER THE PLAINS AND DRIFTING EAST TOWARD THE MISSISSIPPI VALLEY. DRAGGING A WEAK/DRY COLD FRONT ACROSS THE FORECAST AREA BY MONDAY EVENING.
HIGH PRESSURE WILL MAINTAIN PRECIPITATION FREE WEATHER WITH MODERATING TEMPERATURES.
1120 PM EST SAT DEC 5 2015 HIGH PRESSURE WILL CROSS THE REGION OVERNIGHT THROUGH SUNDAY. A WEAK COLD FRONT WILL CROSS THE REGION MONDAY.
335 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL PROVIDE DRY AND MILD WEATHER THROUGH THE MIDDLE OF THE WEEK. EDGING INTO THE LOWER 50S IN THE WARMEST SPOTS OF OUR CWA. WEATHER REMAINS QUIET TONIGHT THOUGH RIDGE SLIDES EASTWARD AND RETURN FLOW INCREASES ENOUGH TO PRECLUDE ANY FOG FORMATION OVERNIGHT. UPPER LOW MOVES SOUTHEAST ACROSS MID ATLANTIC STATES MONDAY. THIS PLACES FORECAST AREA IN WEAK TROUGHINESS WHILE WEAK SURFACE BOUNDARY SLIDES ACROSS THE AREA. TEMPS A LITTLE COOLER BUT STILL ABOVE NORMAL WITH HIGHS IN THE LOWER TO MID 40S. UPPER LOW MOVES TO MID ATLANTIC COAST MONDAY NIGHT.
850 PM PST SAT DEC 5 2015 CONTINUED OFFSHORE FLOW AND A BUILDING RIDGE ALOFT WILL SUPPORT WARM AND DRY CONDITIONS THROUGH MID-WEEK.
SOME LOWER MVFR CLOUDS LINGERING OVER THE JACKSON VALLEY BEHIND THE TROUGH PASSAGE THROUGH 12Z SUNDAY. KCPR/KCOD/KLND/KRIW/KRIW ROUTES SOME PATCHY FOG MAY PARTIALLY OBSCURE TERRAIN ACROSS THE LOWER RIVER VALLEYS OF CENTRAL WYOMING THROUGH 18Z SUNDAY. AN UPPER TROUGH WILL PUSH ACROSS NORTHERN WYOMING SUNDAY NIGHT. WITH AREAS OF LLWS DEVELOPING SUNDAY AFTERNOON AHEAD OF THE TROUGH ALONG THE EAST SLOPES OF THE ABSAROKA RANGE. THE UPPER TROUGH PASSAGE WILL BRING OCNL/FQT MTN OBSCURATIONS FROM THE TOGWOTEE PASS AREA NORTHWARD AND ACROSS THE BIGHORN RANGE SUNDAY NIGHT. THE NORTHERN VALLEYS AND BASINS WILL MAINLY SEE SCT- BKN FL120-150 WITH THIS TROUGH PASSAGE.
Generally light winds will shift to the north and northwest behind a cold front moving through the area tonight. /issued 237 PM CST SAT DEC 5 2015/ Surface observations show a cold front moving into the Oklahoma Panhandle that will move south overnight and arrive in the area between midnight and sunrise. The supporting upper trough is well north of the area and embedded in zonal westerly flow so there will not be much cold air.
WATER VAPOR IMAGERY SHOWS A WEAK SHORT WAVE TROUGH SOUTHWEST OF LAREDO MOVING TO THE NORTHEAST.
HIGH PRESSURE OVER THE EASTERN GREAT LAKES AND OHIO WILL MOVE SLOWLY EASTWARD. ALTHOUGH A STRONG UPPER TROUGH WILL MOVE INTO THE CENTRAL U. SO WILL NUDGE THE LOWS DOWN A CATEGORY. MODELS INDICATE A LITTLE MORE WIND LATER TONIGHT AS HIGH PRESSURE MOVES ON TO THE EAST WHICH MAY LIMIT WIDE SPREAD DENSE FOG HOWEVER. PARTLY CLOUDY AND WARMER SUNDAY WITH HIGHS FROM THE UPPER 40S OVER NORTHERN SECTIONS TO THE LOWER 50S IN THE SOUTH.
1236 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL BUILD IN OVER THE NORTHEAST OVERNIGHT THROUGH TOMORROW. LOW PRESSURE WILL PASS TO OUR SOUTH MONDAY. MAYBE SOME VERY LOCALIZED FREEZING FOG. ON SUNDAY EXPECT BRIGHT SUNSHINE WITH TEMPS SOME 10 TO 15 DEGREES ABOVE NORMAL AS HIGH PRESSURE BUILDS ALONG THE EASTERN SEABOARD. SUNDAY NIGHT AND MONDAY LOOK TO REMAIN CLEAR AS HIGH PRESSURE CONTINUES TO REMAIN OVER THE EAST COAST.
IT WILL BE SEASONABLY MILD AGAIN TODAY WITH MAX TEMPS IN THE LOWER TO MIDDLE 40S.
205 AM CST SUN DEC 6 2015 HIGH CIRRUS ACROSS NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA TO CONTINUE STREAMING EAST ACROSS THE FOUR STATE REGION THROUGH TODAY AS AN UPPER-TROUGH ACROSS THE MIDWEST SHIFTS EAST.
STRONG SOUTHWEST TO WEST FLOW ALOFT ALONG WITH HIGH PRESSURE WILL CONTINUE TO BRING DRY CONDITIONS TO THE PLAINS.
343 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL MOVE OFFSHORE TODAY. A WEAK COLD FRONT WILL CROSS THE REGION MONDAY.
MOISTURE IS NOT PARTICULARLY DEEP BUT IS OBVIOUSLY SUFFICIENT IN THE LOWEST 1 KFT AND STILL STRUGGLED TO MIX OUT TODAY DUE TO LOW DECEMBER SUN ANGLE AND VERY STRONG SUBSIDENCE INVERSION. THIS IS ESPECIALLY TRUE GIVEN SLOW/WEAK PBL MIXING TODAY THAT DID LITTLE TO SCOUR OUT RESIDUAL MOISTURE WITH SURFACE DEWPOINTS STILL IN THE LOW TO MID 30S. SLIGHT CHANCE OF A SHOWER LATE TOMORROW AFTERNOON AS UPPER LOW APPROACHES.
WITH THE HIGH CLOUDS DECREASING AND SOME WIND IN THE MOIST BOUNDARY LAYER. THE UPPER TROUGH OVER ERN NE AND ERN KS WILL TRACK ACROSS NRN AND CNTRL IL THIS AFTERNOON AND EVENING. FORECAST HIGHS FOR TODAY WILL RANGE FROM THE LOWER TO MIDDLE 40S.
WV imagery shows an upper trough over the central CONUS, with a weak, trailing cold front moving through West Texas into the Big Bend/Lwr Trans Pecos. Thus, we've stayed on the cooler side of the highs and warmer side of the lows.
WILL BE STARTING OUT ABOUT 10 DEGREES COOLER THIS MORNING. MIXING AND THERMAL RIDGE AXIS SHIFTING OVER THE FA BY MORNING WILL HOLD TEMPERATURES UP TONIGHT CLOSE TO AVERAGE DAY TIME HIGHS. SHORT WAVE AND ASSOCIATED WEAK COLD FRONT CROSSES THE FA MONDAY HOWEVER COLUMN REMAINS RELATIVELY WARM AND DRY BLO MID LEVELS.
However, still expect shower activity to increase a little bit through the morning hours, especially east of the I-35 corridor where increasing low-level isentropic ascent should help to saturate the low-levels and help rain to reach the surface. A brief period of northwesterly flow behind this morning's system will keep temperatures a few degrees cooler this afternoon, but clearing skies later in the afternoon may still allow some areas to reach the lower 50s especially near and south of the KC area.
925 PM MST SAT DEC 5 2015 SUBSIDENCE ON THE BACKSIDE OF TODAYS TROUGH BROUGHT BRIEF BREEZY WEST WINDS ACROSS THE AREA OVER THE LAST COUPLE HOURS. UPPER TROUGH OVER EASTERN CO THIS AFTERNOON WITH INCREASING MID LEVEL SUBSIDENCE DEVELOPING FM WEST TO EAST ACROSS THE CWA. CLEARING SKIES TONIGHT AS A RIDGE OF HIGH PRESSURE MOVES OVER THE STATE. DRY AND WARMER SUNDAY WITH AN INCREASING WESTERLY FLOW ALOFT. THE AMS WILL BE DRY AND WARMER.
330 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL CONTINUE TO SLIDE OFF THE COAST TODAY. A WEAK COLD FRONT FROM THE WEST IS FORECAST TO PASS THROUGH OUR REGION ON MONDAY. LOW PRESSURE IS EXPECTED TO DEVELOP ALONG THE BOUNDARY OFF THE MIDDLE ATLANTIC COAST ON MONDAY NIGHT BEFORE MOVING OUT TO SEA.