Aikyam-Lab/Synoptic-Bench huggingface dataset:
DRIER AIR WILL TRY TO WORK ITS WAY INTO SOUTHERN WI OVERNIGHT AND SHOULD SCOUR OUT THE LOW CLOUDS BY TUESDAY AFTERNOON. ENOUGH WEAK WAA AND SOME ADDED LIFT WITH PASSAGE OF SUBTLE 700 MB TROUGH TO GENERATE SCATTERED POCKETS OF VERY LIGHT SHOWERS/DRIZZLE ALONG A LINE FROM SOUTH OF LUDINGTON MI THOUGH MILWAUKEE AND WAUKESHA TO JANESVILLE. WITH GUIDANCE A BIT TOO WARM AS FORECAST SOUNDINGS SHOW LITTLE CHANCE OF MIXING UP TO 925 MB TEMPERATURES THAT ARE 3C TO 5C WARMER THAN YESTERDAY.
323 PM CDT MON OCT 5 2015 CURRENT SATELLITE IMAGERY ACROSS THE CONUS INDICATES ONE UPPER LOW PRESSURE CENTER LOCATED JUST OFF THE SOUTH CAROLINA COAST. AND A BLOCKING RIDGE OVER THE SOUTHERN STATES. PACIFIC MOISTURE CONTINUES TO STREAM NORTHEASTWARD ACROSS WEST AND CENTRAL TEXAS IN THE DEEP SOUTHWEST FETCH ALOFT BETWEEN THE UPPER RIDGE AND THE SOUTHWEST U.
350 PM EDT MON OCT 5 2015 A LARGE AREA OF HIGH PRESSURE TO OUR NORTH WILL WEAKEN AND DROP SOUTH ON TUESDAY. A MAINLY DRY COLD FRONT SHOULD PASS IN THE MIDDLE OF THE WEEK.
1225 PM CDT MON OCT 5 2015 FOR 18Z TAFS /ISSUED 1039 AM CDT MON OCT 5 2015/ AN AREA OF LOW PRESSURE CONTINUES TO SPIN OFF THE COAST OF GEORGIA AND SOUTH CAROLINA TODAY. A WEAK CONVERGENCE BOUNDARY EXTENDS SOUTHWEST FROM THIS LOW AND THEN TURNS NORTH RUNNING THROUGH THE CENTER OF ALABAMA IN A NORTH TO SOUTH LINE. EXPECT SLIGHTLY COOLER TEMPERATURES TOPPING OUT IN THE UPPER 70S.
The vertically stacked cut-off low off the Southeast GA coast continues to make slow eastward progress. However, with isentropic ascent weakening, there should be less in the way of light rain and drizzle which should allow temps to get warmer than yesterday. Still, it will be cooler than normal. Overnight lows will generally be in the lower to mid 60s which is slightly above normal.
309 PM MDT MON OCT 5 2015 A STRONG UPPER LEVEL LOW OVER SOUTHERN CALIFORNIA HAS PUT DEEP SOUTH-SOUTHWESTERLY FLOW OVER THE STATE WITH MOISTURE PUSHING UP AS WELL. THIS LOW WILL BE PUSHING EAST INTO ARIZONA TUESDAY TO KEEP THE FORECAST AREA IN THE MOIST SOUTHERLY FLOW WITH GOOD UPPER LEVEL DIVERGENCE. SHOWERS AND A FEW THUNDERSTORMS WILL RETREAT BACK INTO JUST THE HIGH COUNTRY AND PERHAPS THE FAR NORTHERN URBAN CORRIDOR BY TUESDAY MORNING. MAX TEMPERATURES TUESDAY WILL BE SLIGHTLY COOLER OVER THE MOUNTAINS AND SLIGHTLY WARMER OVER THE PLAINS COMPARED TO TODAYS READINGS.
MOSTLY CLEAR SKIES AND DRY CONDITIONS WILL CONTINUE THROUGH MONDAY AS HIGH PRESSURE PERSISTS ALOFT. AN UPPER LEVEL RIDGE WILL BUILD OVERHEAD AND KEEP CONDITIONS WARM. A LARGE MEAN TROUGH WILL DEVELOP ACROSS THE NORTH PACIFIC THROUGH THE WEEK AND GRADUALLY DIG. HOWEVER BY THE WEEKEND THE UPPER RIDGE MAY WEAKEN ENOUGH TO ALLOW FOR LIGHT RAIN TO REACH THE REDWOOD COAST. AN UPPER LOW OVER SOUTHERN CALIFORNIA AND HIGH PRESSURE OFFSHORE HAVE WORKED IN TANDEM TO INDUCE A FLOW REVERSAL ALONG THE COAST TODAY. LIGHT TO MODERATE SOUTHERLY WINDS AND LOW SEAS ARE EXPECTED THROUGH THE MIDDLE OF THE WEEK WITH A BROAD AREA OF LOW PRESSURE OVER THE WATERS.
246 PM CST SUN JAN 10 2016 LEADING EDGE OF A WARM FRONT IS DRAPED VERY CLOSE TO GREGORY COUNTY AT THIS TIME. WITH MILD TEMPERATURES NEAR FREEZING NOTED IN NORTH CENTRAL NEBRASKA. IT IS EXPECTED THAT THE WARM FRONT WILL NOT MAKE ANY EASTWARD PROGRESS TONIGHT STAYING GENERALLY BOTTLED UP IN SOUTH CENTRAL SD. THE LEADING EDGE OF A SURFACE COLD FRONT WILL BEGIN TO NUDGE INTO OUR FAR NORTHERN ZONES BY VERY LATE AFTERNOON. INSTABILITY IS AVAILABLE IN THE LOWEST REACHES OF THE ATMOSPHERE THROUGH ABOUT 925-900MB.
LINGERING STRATUS ACROSS THE NORTHERN HALF OF THE FA HAS KEPT TEMPS MUCH COOLER THAN EXPECTED WITH MANY STATIONS HAVNING NOT YET WARMED OUT OF THE 20S. /ISSUED 414 AM CST SUN JAN 10 2016/ NORTH-TO-SOUTH SURFACE PRESSURE RIDGE WAS FOUND MAKING STEADY PROGRESS OFF THE CAPROCK EARLY THIS MORNING. WINDS ALOFT WILL UNDERGO BACKING FROM NW-SW IN ADVANCE OF A POSITIVE TILT TROUGH OVER YOSEMITE AT 3 AM. HEALTHY STREAM OF UPPER PACIFIC MOISTURE/CLOUDS WILL TAKE AIM ON THE LOCAL AREA BY SUNSET AND PROCEED TO DEEPEN OVERNIGHT AS THE TROUGH DRAWS CLOSER. WITH THE TROUGH AXIS ALMOST SOUTHEAST OF THE FORECAST AREA BY 18Z MONDAY.
SURFACE ANALYSIS THIS MORNING PLACES A 1030 MB ARCTIC RIDGE OF HIGH PRESSURE OVER PORTIONS OF THE CENTRAL/SOUTHERN PLAINS AND MIDDLE/LOWER MISSISSIPPI VALLEYS.
MODEL ENSEMBLE ANALYSIS AND GUIDANCE SUGGESTS THAT FREEZING TEMPERATURES COULD REACH AS FAR SOUTH AS OUR SOUTHERN BORDER WITH CRP. EXPECTING HIGHS PERHAPS 3-4 DEGREES WARMER THAN TODAY ACROSS THE AREA.
MOSTLY CLOUDY AREA WIDE THIS MORNING WITH 9 AM TEMPERATURES MOSTLY IN THE 30S TO LOWER 40S AT THE LOWER ELEVATIONS WITH TEENS AND 20S IN THE MOUNTAINS. A WEAK UPPER LEVEL TROF OVER CNTRL NV THIS AM WILL MOVE INTO NW AZ EARLY THIS AFTERNOON AND THEN ACROSS THE STATE INTO EARLY MONDAY MORNING.
LEADING TO MOSTLY CLEAR SKIES AND FREEZING TEMPERATURES TONIGHT.
348 PM CST SUN JAN 10 2016 Cold high pressure overhead will be pushed to the south overnight. While the low levels will be starved of moisture there should be a fair amount of mid level cloud cover generated that will sweep through the CWA through the day.
At this hour, sunshine is most prevalent on the higher peaks in the Cascades and top of Mission Ridge which resides around 6800 feet. The only changes to temperatures were to lower Winchester a few degrees into the lower 30s with morning temps starting off around 11F. With the upper ridge strengthening inversions today, anticipate little change in Central WA arnd Wenatchee, Omak, and Moses Lake.
HIGH PRESSURE WILL CONTINUE TO BUILD INTO THE REGION. HIGH TEMPS WILL ONLY REACH THE LOW TO MID 40S TODAY. TEMPERATURES ACROSS THE ARKLATEX FORECAST TO CLIMB ONLY IN THE LOWER TO MIDDLE 40S THIS AFTERNOON. A FAIRLY BENIGN FORECAST EXPECTED THROUGH MOST OF THE WORK WEEK WITH NEAR FREEZING LOW TEMPERATURES AND HIGHS IN THE 40S AND 50S EACH DAY.
1122 AM CST SUN JAN 10 2016 VFR CONDITIONS WILL PREVAIL THROUGH THE PERIOD WITH HIGH PRESSURE DOMINATING THE CENTRAL PLAINS. THE WINDS WILL NOT BE QUITE AS STRONG TODAY BUT WHAT LITTLE BREEZE THERE WILL BE WILL STILL MAKE IT FEEL A LITTLE COOLER THAN THE ACTUAL TEMPERATURE. THEY DO AGREE THAT THE LOWER LEVELS NEAR THE SURFACE WILL REMAIN FAIRLY DRY MAKING IT DIFFICULT FOR ANY PRECIPITATION TO REACH THE GROUND.
A CHANGE IN AIRMASS HAS BROUGHT MUCH WARMER TEMPERATURES ACROSS MOST OF THE NORTH AND CENTRAL ZONES. NW TO N FLOW ALOFT WILL PERSIST OVER MONTANA AS A MID TO UPPER-LEVEL RIDGE CONTINUES TO BUILD EASTWARD FROM THE PACIFIC NORTHWEST. WHERE PATCHY FREEZING FOG AND OCCASIONAL MVFR/IFR LINGER.
A CHANGE IN AIRMASS HAS BROUGHT MUCH WARMER TEMPERATURES ACROSS MOST OF THE NORTH AND CENTRAL ZONES.
332 PM CST SUN JAN 10 2016 SURFACE ANALYSIS THIS AFTERNOON AT 3PM HAS HIGH PRESSURE OVER THE S PLAINS WITH GENERALLY MODERATE NORTHERLY WINDS OVER THE AREA. HIGH PRESSURE SHOULD MOVE OVER THE ARKLATEX AND EASTWARD TONIGHT. FREEZING TEMPS FOR PART OF THE AREA MON MORNING LOOK POSSIBLE BUT LARGELY DEPEND ON CLOUD COVER. SATELLITE IMAGERY PICKING UP ON SOME HIGH CLOUDS THAT COULD MOVE INTO THE AREA AND KEEP MIN TEMPS MORE IN THE LOW/MID 30S INSTEAD OF UPPER 20S/LOW 30S. BUMPED MIN TEMPS UP A DEGREE OR TWO WITH THE IDEA TEMPS WILL BE NEAR OR AT FREEZING ACROSS THE AREA. BROAD UPPER LEVEL TROUGH REMAINS OVER CANADA INTO THE GREAT LAKES. A FEW SHORT WAVE TROUGHS WILL BE ROTATING THROUGH THE MAIN FLOW.
157 PM EST SUN JAN 10 2016 HIGH PRESSURE OVER THE CENTRAL CONUS WILL GRADUALLY BUILD EAST INTO THE REGION THROUGH MONDAY.
WARMER AIR MOVING IN FROM THE WEST HAS PUSHED HIGH TEMPERATURES INTO LOWER 30S OVER NERN WY AND PARTS OF FAR WRN SD WITH TEMPS ONLY IN THE LOWER 20S OVER THE ERN PART OF THE FCST AREA AND IN THE SINGLE DIGITS ABOVE ZERO ALONG THE MO RIVER.
A COLD FRONT HAS MOVED SOUTH OF THE AREA WITH THE BOUNDARY NOW ENTERING SOUTH FLORIDA. WITH 2-4 HOURS OF FREEZING TEMPERATURES LIKELY. PORTIONS OF INLAND NE FL COULD TOUCH FREEZING BUT DURATION WILL BE VERY BRIEF IF IT OCCURS. DESPITE THE FULL SUNSHINE CONTINUE COLD ADVECTION WILL RESULT IN HIGHS IN THE LOWER/MID 50S FOR SE GA/NE FL AND UPPER 50S FOR NORTH-CENTRAL FL. HIGH PRESSURE WILL BE NORTHWEST OF THE AREA MONDAY NIGHT WITH A COLD ADVECTION PATTERN CONTINUING.
Lingering low clouds and patchy light fog this morning in portions of the Central Valley in wake of the short wave trof that moved through overnight. Decreasing cloudiness expected this morning as high amplitude short wave ridging moves through the area today. System is encountering high amplitude ridging and is being stretched with cloud top warming evident on IR.
WINDS WILL SUBSIDE AFT 00Z AS THE GRADIENT RELAXES AND HIGH PRESSURE BUILDS IN.
VFR THIS CYCLE WITH FRESH ARTIC HIGH PRESSURE OVER NE KN THAT WILL SINK INTO THE HEART OF THE CWA BY THIS TIME MONDAY. HIGH PRESSURE WILL CONTINUE TO BUILD INTO THE REGION. HIGH TEMPS WILL ONLY REACH THE LOW TO MID 40S TODAY. TEMPERATURES ACROSS THE ARKLATEX FORECAST TO CLIMB ONLY IN THE LOWER TO MIDDLE 40S THIS AFTERNOON. A FAIRLY BENIGN FORECAST EXPECTED THROUGH MOST OF THE WORK WEEK WITH NEAR FREEZING LOW TEMPERATURES AND HIGHS IN THE 40S AND 50S EACH DAY.
206 PM CST SUN JAN 10 2016 STRONG COLD ADVECTION HAS BEEN ONGOING THROUGH THE DAY BEHIND A COLD FRONT THAT IS NOW WELL TO THE SE OF THE AREA. TEMPS HAVE GENERALLY BEEN IN THE LOWER TO MID 30S AND HAVE WARMED A DEG OR TWO IN THE LAST HOUR THANKS TO THE CLOUDS FINALLY CLEARING OUT FROM WEST TO EAST.
THE COLD FRONT IS PUSHING THROUGH THE SOUTHERN ZONES THIS AFTERNOON. WITH HIGH PRESSURE BUILDING INTO THE NORTH BEHIND IT. COOLER AND DRIER AIR WILL MOVE IN ACROSS THE AREA OVERNIGHT AS SKIES GRADUALLY CLEAR OUT SOME. DRY HIGH PRESSURE WILL BE IN PLACE ACROSS THE AREA MONDAY WITH WINDS CONTINUING GENERALLY FROM THE NORTH. WITH SOME ISOLATED COOLER POCKETS POSSIBLY TOUCHING FREEZING IN SOME AREAS.
ON THE BACKSIDE OF THE LOW. NW WINDS WILL INCREASE AND GUST NEAR 30- 35 MPH WITH ISOLATED HIGHER GUSTS POSSIBLE AS WELL-MIXED DRY ADIABATIC LAYER DEVELOPS IN THE LOWER TROPOSPHERE.
1048 AM MST SUN JAN 10 2016 A RIDGE OF HIGH PRESSURE WILL BUILD ONTO THE LEFT COAST THIS MORNING AND LOOKS TO BE THE DOMINANT WEATHER FEATURE. THIS MORNING THE FIRST OF THESE DISTURBANCES WAS DIGGING DOWN THE EAST SIDE OF THE RIDGE THROUGH THE GREAT BASIN. THE RIDGE BUILDS INTO THE GREAT BASIN. HIGH PRESSURE WILL CONTINUE TO DOMINATE THE REGION THROUGH MIDWEEK. UNDER THIS RIDGE TEMPERATURES WILL WARM SLIGHTLY IN THE HIGHER ELEVATIONS WHEREAS THE VALLEY LOCATIONS WILL NOT SEE MUCH VARIANCE FROM DAY TO DAY AS COLDER AIR REMAINS TRAPPED UNDER STRONG INVERSIONS.
244 PM CST SUN JAN 10 2016 POSITIVELY TILTED TROUGH WILL PASS OVER THE SOUTHERN PLAINS TONIGHT AND FIRST PART OF MONDAY.
319 PM CST SUN JAN 10 2016 An amplified upper level trough across central Canada will dig southeast into the northern plains and upper Midwest by Monday Afternoon. A weak lead upper level trough will dig southeast across central NE and across northeast KS and northwest MO through the mid and late morning hours of Monday. A southern stream upper level trough will move southeast across southern TX. Expect warmer temperatures with afternoon highs on Monday reaching the upper 30s to lower 40s.
127 PM EST SUN JAN 10 2016 LOW PRESSURE WILL BRING RAIN THIS MORNING BEFORE THE PASSAGE OF A STRONG COLD FRONT BRINGS SNOW CHANCES AND MUCH COLDER WEATHER LATER TODAY THROUGH MUCH OF THE UPCOMING WEEK. BASED ON LATEST SURFACE OBSERVATIONS THE COLD FRONT HAS NOW MADE ITS WAY THROUGH PITTSBURGH AND SHOULD BE EAST OF THE RIDGES SHORTLY. BY EARLY EVENING THE ONLY LOCATIONS STILL WITH POSSIBLE SNOW WILL BE ALONG AND NORTH OF INTERSTATE 80 AND SE ALONG THE RIDGES WHERE LAKE/TERRAIN ENHANCEMENT WILL COME INTO PLAY. RIDGING AND BACKING FLOW WILL EVENTUALLY END LIGHT SNOW SHOWER CHANCES ALONG AND NORTH OF INTERSTATE 80 AND SE ALONG THE RIDGES BYMIDNIGHT.
EXPECTING A LITTLE MORE WARMING BY 2 PM ALONG WITH DECREASING WINDS AS HIGH PRESSURE RIDGE AXIS MOVES MORE OVERHEAD TO ALLOW THE REST OF THE WIND CHILL TO DROP BY THEN. DEEPER UPPER TROUGHING HAS OVERTAKEN THE AREA WITH THE FIRST TRUE ARCTIC AIRMASS NOW WELL ENTRENCHED EARLY THIS MORNING. REACHING TO ADVISORY LEVELS FOR MUCH OF THE CWA COURTESY OF GUSTIER NORTHWEST WINDS WITHIN A DECENT GRADIENT BETWEEN LOW PRESSURE DEEPENING OVER THE EASTERN LAKES AND HIGH PRESSURE WORKING THROUGH THE PLAINS STATES. AS LOW LEVEL RIDGING CONTINUES TO FOLD EAST AND PUNT SOME EVEN DRIER AIR EAST AS IT DOES SO. WITH THE RIDGE AXIS ESSENTIALLY FOLDING OVERHEAD.
WARMEST AREAS ARE IN THE WESTERN HALF OF THE FORECAST AREA AS THIS PORTION OF THE REGION DID START OFF THE MORNING ON THE WEST SIDE OF THE RIDGE AXIS. AMPLIFIED RIDGING OVER THE WESTERN PORTION OF THE COUNTRY FROM THE SURFACE THRU 500 MB WILL KEEP THE CWA UNDER MAINLY A WNW FLOW. IN THE BEGINNING STRONG ZONAL FLOW SEEN NOW OVER THE PACIFIC BREAKS THROUGH/FLATTENS CURRENT UPPER RIDGE WITH WEST TO NORTHWEST FLOW ALOFT CONTINUING. OF COURSE DEPENDING ON WHICH MODEL YOU CHOOSE STRONGER RIDGING DEVELOPS OVER THE WEST FOR THE REST OF THE PERIOD AS A STRONG AND COLD UPPER LOW OVER CENTRAL CANADA STARTS MOVING SOUTH.
1012 AM PST SUN JAN 10 2016 A WEAK WARM FRONT APPROACHING FROM THE WEST LATE TODAY INTO MONDAY WILL BRING THE SLIGHT CHANCE OF LIGHT SHOWERS TO THE NORTH OF SANTA BARBARA.
312 PM CST SUN JAN 10 2016 Canadian high pressure will sink south of the region tonight.
1246 PM EST SUN JAN 10 2016 LOW PRESSURE WILL BRING RAIN THIS MORNING BEFORE THE PASSAGE OF A STRONG COLD FRONT BRINGS SNOW CHANCES AND MUCH COLDER WEATHER LATER TODAY THROUGH MUCH OF THE UPCOMING WEEK. LATEST RADAR/OBS/SAT SHOW THE APPROACHING COLD FRONT NOW INTO CENTRAL OHIO WITH STRONG WEST/NORTHWESTERLY WINDS BEHIND THE FRONT. THE LOW/S ASSOCIATED COLD FRONT IS PROGGED TO CROSS THE REGION FM W-E LT THIS MRNG/ERLY AFTN. WITH A COUPLE OF INCHES PSBL N OF I 80 AND IN THE RIDGES. ESP IN THE RIDGES. LAKE AND TERRAIN ENHANCED SNOW SHOWERS N OF I 80 AND IN THE RIDGES SHOULD CONTINUE TONIGHT. RIDGING AND BACKING FLOW SHOULD END PCPN BY MON MRNG.
LIGHT SNOW SHOWERS OR FLURRIES WILL PERSIST THROUGH THE EVENING IN THE NORTHERN HALF OF THE AREA AS A SECONDARY VORT MAX MOVES THROUGH ALONG WITH THE 850 MB THERMAL TROUGH. BUT WITH LITTLE TO NO ACCUMULATION OUTSIDE THE HIGHEST ELEVATIONS WHERE UPSLOPE WINDS MIGHT ENHANCE PRECIP SLIGHTLY. BUT HIGH CLOUDS WILL BEGIN TO INCREASE LATE IN THE DAY AS THE NEXT UPPER TROUGH APPROACHES. MONDAY NIGHT SKIES START OUT MOSTLY CLEAR AS COLD HIGH PRESSURE IS IN CONTROL.
A NARROW UPPER LEVEL RIDGE OVER THE REGION TODAY WILL ONLY STUBBORNLY GIVE WAY EARLY IN THE WEEK TO A SERIES OF TROUGHS IN A PROGRESSIVE PATTERN LASTING THROUGH THE REST OF THE WEEK. THE MAIN PART OF THE TROUGH IS EXPECTED TO LIFT ACROSS WA BY MON NIGHT. BUT TENDING TO STRETCH AS IT MOVES INTO THE RIDGE SIMILAR TO OTHER RECENT WAVES. SURFACE TEMPS HAVE MODIFIED SUFFICIENTLY THE PAST COUPLE OF DAYS TO GREATLY REDUCE THE THREAT OF ANY FREEZING RAIN FOR THIS EVENT. NAM MODEL SOUNDINGS SUGGEST STILL SOME RESIDUAL POSSIBILITY OF FREEZING RAIN IN THE VICINITY OF HOOD RIVER MON MORNING. SO WILL RETAIN A SLIGHT CHANCE FOR FREEZING RAIN THERE THEN.
WATER VAPORHAD UPPER LOW OVER HUDSON BAY AND TROUGH INTO THE PLAINS.
120 PM PST SUN JAN 10 2016 A WEAK WARM FRONT APPROACHING FROM THE WEST LATE TODAY INTO MONDAY WILL BRING THE SLIGHT CHANCE OF LIGHT SHOWERS TO THE NORTH OF SANTA BARBARA.
240 PM EST SUN JAN 10 2016 AN AREA OF HIGH PRESSURE WILL PASS TO THE SOUTH EARLY THIS WEEK.
SFC ANALYSIS AT 16Z HAS HIGH PRESSURE BUILDING OVER THE PLAINS WITH NORTHERLY WINDS IN PLACE OVER SE TX.
1246 PM EST SUN JAN 10 2016 HIGH PRESSURE OVER THE CENTRAL CONUS WILL GRADUALLY BUILD EAST INTO THE REGION THROUGH MONDAY.
SHORT WAVE TROUGH NOW MOVING THROUGH AZ AND NM WILL STAY MAINLY TO OUR SOUTH. WE WILL BE UNDER A BUILDING RIDGE WITH NVA ON MONDAY. WITH DOUBLE DIGIT NEGATIVES POSSIBLE FOR THE HIGH VALLEYS AND SINGLE DIGITS OVER THE ERN PLAINS. WITH TEMPS IN THE 20S FOR THE HIGH VALLEYS AND LOWER 40S FOR THE PLAINS.
355 PM CST SUN JAN 10 2016 HIGH PRESSURE CONTINUES TO BUILD IN ACROSS THE REGION THIS AFTERNOON. TEMPERATURES IN SOME AREAS TODAY WERE 2 TO 3 DEGREES WARMER THAN FORECASTED. ONLY MANAGED TO GET IN THE LOWER TO MID 40S ACROSS REGION. EXPECT A FAIRLY BENIGN FORECAST WITH NEAR FREEZING LOW TEMPERATURES AND HIGHS IN THE UPPER 40S TO MID 50S EACH DAY.
THIS WILL ALLOW FOR OVERNIGHT LOWS TO BE A BIT WARMER BUT STILL COLD IN THE MID 20S ON AVERAGE. A WEAK FRONT/SURFACE TROF WILL PUSH WINDS TO THE NORTH/NORTHWEST TOMORROW AFTERNOON AS AN UPPER LEVEL TROF MOVES IN OVERHEAD. THIS MAY KEEP TEMPS ACROSS THE NORTH A BIT COOLER THAN THE REST OF THE FA. SOME FLURRIES MAY BE POSSIBLE ACROSS THE NORTHERN PERMIAN BASIN/EXTREME SOUTHERN SOUTH PLAINS AND ROLLING PLAINS BETWEEN MIDNIGHT AND 6AM AS THE TROF BEGINS TO MOVE INTO THE REGION.
1253 PM EST SUN JAN 10 2016 HIGH PRESSURE WILL BUILD OVER THE AREA THROUGH LATE WEEK. A LOW PRESSURE SYSTEM WILL THEN APPROACH THE AREA LATE WEEK. FOLLOWED BY A POTENTIALLY STRONGER LOW PRESSURE SYSTEM LATE WEEKEND. THE COLD FRONT HAS JUST CLEARED THE FORECAST AREA AND CONTINUES TO MOVE OFFSHORE BASED ON SURFACE OBSERVATIONS. COLD ADVECTION IS ALSO DROPPING TEMPERATURES FROM THE 60S INTO THE LOW TO MID 50S ACROSS INLAND AREAS. BUT THE HIGH TEMPS HAVE LIKELY ALREADY OCCURRED IN MOST LOCATIONS. THE HIGH CLOUDINESS WILL LIMIT INSOLATION SO AFTERNOON HIGHS WILL MAINLY BE IN THE 50S. A SECONDARY COLD FRONT WILL DROP THROUGH THE AREA THIS EVENING WITH LOW TEMPS DROPPING TO THE LOWER 30S MANY AREAS AFTER SKIES TOTALLY CLEAR AND LOCATIONS DECOUPLE LATER TONIGHT.
HIGH SKIES SHOULD REMAIN MOSTLY CLEAR THROUGH THE EVENING AND INTO TONIGHT UNDER THE INFLUENCE OF DEPARTING HIGH PRESSURE TO THE SOUTH.
400 PM EST SUN JAN 10 2016 COLDER AIR TONIGHT WITH DIMINISHING WIND GUSTS IN WAKE OF COLD FRONT.
HIGH PRESSURE RIDGE HAS MOVED A LITTLE MORE INLAND WHICH SHOULD CONTINUE TO SUPPORT LOW LEVEL INVERSIONS IN THE VALLEYS/SNAKE PLAIN. WE DID LOOSE MORE OF THE LOW STRATUS TODAY IN SOME AREAS.
939 AM MST SUN JAN 10 2016 A WEAK TROUGH WILL MOVE THROUGH THE AREA TODAY. DRY WEATHER WITH A GRADUAL WARMING TREND IS EXPECTED THIS WEEK AS WEAK HIGH PRESSURE BECOMES THE DOMINANT WEATHER FEATURE. THE WEAK TROUGH WILL MOVE RAPIDLY THROUGH THE AREA THIS MORNING AND THE AXIS SHOULD BE LOCATED ROUGHLY AROUND I-17 BY EARLY AFTERNOON. NOT MUCH IN THE WAY OF ISENTROPIC ASCENT ASSOCIATED WITH THIS TROUGH AND NOT SURPRISINGLY.
DENSE FOG IS STILL OCCURRING IN SOME AREAS IN THE LOWER TREASURE VALLEY THIS MORNING. EXPECT CONTINUED DRY CONDITIONS AS AN UPPER RIDGE CONTINUES TO BUILD ALONG THE PACIFIC COAST. DENSE FREEZING FOG ACROSS PARTS OF THE AREA WILL PERSIST LONGEST ACROSS THE LOWER TREASURE VALLEY AND WEISER BASIN SO A DENSE FOG ADVISORY WAS ISSUED THROUGH 11 AM MST.
Still, winds will be fairly light and skies will remain mostly clear alowing for temperatures to drop down into the teens(F) for lows across west central Kansas to the lower 20s(F) in south central Kansas. The upper level ridge over the Rockies builds east on Monday. With a warmer airmass in place along with dry downslope low level flow, temperatures will be some 5 to 10 degrees warmer than today.
A fast moving upper level trough will move southeast out of the Rockies tonight and could provide a few flurries from the Davis Mountains into the Permian Basin. However lift associated with the trough will be weak and do not see the instability needed for anything more than a light dusting. Models show several troughs moving across the southwestern U.
355 PM EST SUN JAN 10 2016 AN AREA OF HIGH PRESSURE WILL PASS TO THE SOUTH EARLY THIS WEEK.
300 PM CST SUN JAN 10 2016 High pressure moving from the central Plains to the southeastern U. the next low pressure system will be approaching from the west.
A PREFRONTAL TROUGH PASSED THROUGH THE ISLAND EARLIER TODAY AS A BROKEN LINE OF SHOWERS AND EVEN A COUPLE OF THUNDERSTORMS. THE COLD FRONT STRETCHES FROM NEAR NAPLES TO THE EASTERN YUCATAN. BENEATH THE HIGH VEIL OF CLOUDS. TEMPERATURES CLIMBED INTO THE LOWER 80S ACROSS MUCH OF THE ISLAND CHAIN.
Cold, dry air has moved into the region behind a cold front. Cold advection will bring temperatures below freezing overnight for all but the southeast FL Big Bend counties and the coastal strip.
SW-W WINDS GUSTING AROUND 20 KT AHEAD OF THE COLD FRONT WHICH WILL MOVE THROUGH LAKE OKEECHOBEE/NAPLES BY 18Z, KPBI BY 21Z AND FLL/MIA AREA TERMINALS BY 22Z.
253 PM MST SUN JAN 10 2016 High pressure will be the dominant weather feature over the Northern Rockies through Monday. Middle elevation valleys that experience solid clearing tonight are likely to see patches of freezing fog to develop. Despite the limited extent of the freezing fog overnight, patches of low visibility will be hazardous for area travel. Clouds will increase across the Northern Rockies by Monday evening, as a weakening wave of Pacific moisture moves around the ridge of high pressure.
At this hour, sunshine is most prevalent on the higher peaks in the Cascades and top of Mission Ridge which resides around 6800 feet. The only changes to temperatures were to lower Winchester a few degrees into the lower 30s with morning temps starting off around 11F.
1125 AM EST SUN JAN 10 2016 STRONG LOW PRESSURE WILL TRACK NORTHEAST OF THE AREA THIS MORNING. HIGH PRESSURE WILL BUILD INTO THE REGION TONIGHT INTO MONDAY.
231 PM MST SUN JAN 10 2016 A WEAK TROUGH WILL MOVE THROUGH THE AREA TODAY. DRY WEATHER WITH A GRADUAL WARMING TREND IS EXPECTED THIS WEEK AS WEAK HIGH PRESSURE BECOMES THE DOMINANT WEATHER FEATURE. UPPER TROUGH SWINGING THROUGH THE FOUR CORNERS TODAY WILL CONTINUE TO SUPPORT AMPLE CLOUD COVER AND EVEN A LIGHT SHOWER/SPRINKLE ACROSS CENTRAL AZ BEFORE CLEARING OUT TO THE EAST THIS EVENING. GIVEN THE NEAR-SFC/LL DRY MOISTURE PROFILE THESE RETURNS ARE POSSIBLY A COMBINATION OF SOME THICKER/COOLER TOPPED CLOUDS AND AN EMBEDDED SHOWER OR TWO.
HIGH PRESSURE AND VALLEY INVERSIONS WILL THEN RETURN AND PERSIST THROUGH AT LEAST MID WEEK. WEAK TROUGH AXIS SAGGING SOUTH THROUGH THE STATE TODAY. WEST-EAST ORIENTED UPPER LEVEL RIDGING AND WARM ADVECTION BUILD RAPIDLY OVER NRN UT LATE THIS AFTERNOON AND EVE.
309 PM EST SUN JAN 10 2016 A COLD FRONT WILL SWEEP ACROSS PENNSYLVANIA AND USHER MUCH COLDER AIR INTO THE REGION BY THIS EVENING. A DEEP UPPER LEVEL TROUGH WILL PIVOT THROUGH THE NORTHEAST CONUS THIS WEEK.
BUT APPEARS THAT SIGNIFICANT IMPROVEMENT SHOULD ACCOMPANY PASSAGE OF SURFACE TROF MONDAY MORNING AS NORTHWEST LOW-LEVEL WINDS BRING IN DRIER AIR IN REGIME OF LARGE- SCALE DESCENT. FORECAST CONFIDENCE IS ON THE LOWER SIDE WHETHER LOW CIGS WILL PERSIST OVERNIGHT OR SCATTER OUT. BRIEF FREEZING FOG WHICH DEVELOPED AROUND THE MIDNIGHT HOURS HAS MOSTLY DISSIPATED AS THE MID TO HIGH CLOUDS MOVED IN FROM THE NORTHWEST. THERE REMAINS POTENTIAL FOR THE FREEZING FOG TO REDEVELOP WHEN THE CLOUDS THIN AS DRIER AIR ALOFT WORKS ITS WAY SOUTHWARD OUT OF COLORADO.
1241 PM EST SUN JAN 10 2016 A COLD FRONT WILL CROSS THE WESTERN CAROLINAS AND NORTHEAST GEORGIA THIS MORNING AND THEN MOVE OFFSHORE BY MIDDAY. CANADIAN HIGH PRESSURE WILL GRADUALLY BUILD IN BEHIND THE FRONT THROUGH MONDAY.
1040 AM PST SUN JAN 10 2016 QUICK UPDATE TO INCREASE CLOUD COVER FOR THE AFTERNOON AS THE LOW STRATUS IS TAKING ITS TIME BURNING OFF.
HIGH PRESSURE WILL RESIDE OVER THE AREA THROUGH TONIGHT. THIS WILL ALLOW THE LOW CLOUDS AND FOG TO PERSIST BENEATH THE INVERSION BUT REMAIN CLEAR ABOVE THE LOW CLOUDS. THERE COULD BE SOME OCCASIONAL DRIZZLE FALLING FROM THE LOW CLOUDS. DRIER NORTHERLY FLOW HAS ALLOWED CIGS AND VISIBILITY TO LIFT INTO THE LOW VFR/MVFR RANGE FOR TAF SITES THIS MORNING.
A DEVELOPING COASTAL TROUGH ACROSS THE SOUTHERN TEXAS COAST AND HIGH PRESSURE TO THE NORTH WILL KEEP THE ONGOING NORTH-NORTHWEST FLOW THROUGH THE PERIOD. TEMPERATURES THROUGH MUCH OF THE NIGHT SHOULD REMAIN ABOVE FREEZING. THE BIGGEST CAVEAT TO ANY TEMPERATURES BEING ABLE TO DIP TO FREEZING WILL BE THE AMOUNT OF HIGH CLOUDS THAT WILL STREAM OUT OF THE WEST. STILL THINK THAT WITH CONDITIONS REMAINING QUITE DRY AND DEWPOINTS CURRENTLY HANGING BELOW FREEZING. TEMPS IN THE LOW 30S WILL REMAIN POSSIBLE. AS THE COASTAL TROUGH FURTHER DEVELOPS THROUGH MONDAY. THIS COASTAL TROUGH WILL LEAD TO INCREASING MOISTURE AND CLOUD COVERAGE.
1251 PM EST SUN JAN 10 2016 STRONG LOW PRESSURE WILL TRACK NORTHEAST OF THE AREA THIS MORNING. HIGH PRESSURE WILL BUILD INTO THE REGION TONIGHT INTO MONDAY.