Aikyam-Lab/Synoptic-Bench huggingface dataset:
202 AM MDT SUN MAR 27 2016 LATEST UPPER AIR ANALYSIS DEPICTS A LONG WAVE TROUGH OVER THE CENTRAL CONUS WITH A RIDGE MOVING ONTO THE WEST COAST. WITHIN THE MAIN TROUGH ARE TWO SMALLER SCALE TROUGHS. CLOUD COVER WILL CLEAR AS DRIER AIR MOVES OVER THE AREA BEHIND THE UPPER LEVEL TROUGH AXIS. BRINGING IN WARMER AIR. AN UPPER LEVEL RIDGE WILL BEGIN TO MOVE OVERHEAD DURING THE AFTERNOON BEHIND A LOW LEVEL RIDGE.
A COLD FRONT EXTENDED FROM KINL TO KSPS WITH A NARROW BAND OF SPRINKLES ALONG/AHEAD OF THE FRONT. ACCOMPANIED BY A COLD FRONT. THERE IS FORCING DUE TO THE SHORT WAVE BUT THE LOW LEVELS ARE QUITE DRY. WITH PLENTY OF CLOUDS AND THE ARRIVAL OF THE FRONT MAXIMUM TEMPERATURES WILL BE COOLER THAN THE PAST COUPLE OF DAYS. HIGHS SHOULD TOP OUT IN THE LOWER TO MID 40S. OPERATIONAL MODELS INTENSIFY THE UPPER LEVEL TROUGH INTO A CLOSED LOW AS IT TRACKS INTO OH BY 12Z MON. MINIMUM TEMPERATURES WILL BE MAINLY IN THE LOWER 30S.
1000 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL HOLD SOUTH OF NEW ENGLAND TODAY. A WEAK COLD FRONT WILL SAG SOUTH FROM CANADA AND OFFSHORE BY MONDAY AFTERNOON. HIGH PRESSURE BUILDS IN FROM THE WEST BEHIND THE FRONT. LOW PRESSURE DEVELOPS OF THE VIRGINIA COAST MONDAY NIGHT AND STAYS SOUTH OF NORTHERN NEW ENGLAND.
335 AM PST SUN DEC 6 2015 CORRECTED WWA SECTION CONTINUED OFFSHORE FLOW AND A BUILDING RIDGE ALOFT WILL SUPPORT WARM AND DRY CONDITIONS THROUGH MID-WEEK.
WARMER AND CONTINUED DRY WEATHER IS EXPECTED TO LAST THROUGH EARLY STAGES OF THIS WEEK.
THIS OBVIOUSLY INCLUDES A COLD FRONT WHICH HAS MOVED INLAND EARLY THIS MORNING WITH STRONG SOUTHERLY WINDS AND MODERATE TO HEAVY PRECIPITATION. IT WILL BE WARMER.
TODAY THROUGH MONDAY NIGHT UPPER LEVEL ANALYSIS HAS TRANSIENT RIDGE CROSSING THE NORTHERN PLAINS AT THE MOMENT. WITH AN OPEN TROF IMPACTING THE PACIFIC NORTHWEST COAST. HIGH PRESSURE IS IN PLACE ACROSS THE CENTRAL PLAINS WITH A LEE TROF DEVELOPING ACROSS CENTRAL MONTANA AND WYOMING. TRANSIENT RIDGE CROSSES THE NORTHERN PLAINS TODAY AS PACIFIC NORTHWEST WAVE MOVES INTO THE NORTHERN ROCKIES. AS LEE TROF CONTINUES TO DEVELOP OVER MONTANA. AND WEAK RIDGING SLIDES ACROSS THE NORTHERN ROCKIES.
648 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL MOVE OFFSHORE TODAY. A WEAK COLD FRONT WILL CROSS THE REGION MONDAY.
1018 AM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL LINGER OVER THE UPPER OHIO VALLEY THROUGH TONIGHT. LOW PRESSURE WILL PASS TO THE SOUTH OF THE LOCAL AREA ON MONDAY.
Surface pressures remained high over the Southeast, and with an upper level ridge building over the region this afternoon as well, we expect fair weather to continue.
525 AM CST SUN DEC 6 2015 /12Z TAFS/ A cold front will continue moving south through West Central Texas this morning shifting surface winds to the north. 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.
1031 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL PERSIST OVER THE AREA THROUGH TONIGHT. UPPER LEVEL LOW PRESSURE WILL CROSS THE MID-ATLANTIC MONDAY AFTERNOON AND EVENING.
618 AM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL LINGER OVER THE UPPER OHIO VALLEY THROUGH TONIGHT. LOW PRESSURE WILL PASS TO THE SOUTH OF THE LOCAL AREA ON MONDAY.
629 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.
645 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.
1015 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.
335 AM PST SUN DEC 6 2015 UPDATED AVIATION SECTION CONTINUED OFFSHORE FLOW AND A BUILDING RIDGE ALOFT WILL SUPPORT WARM AND DRY CONDITIONS THROUGH MID-WEEK.
HIGHS THIS AFTN OVER NERN CO WILL BE WARMER WITH READINGS IN THE UPPER 40S TO MID 50S.
912 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL MOVE OFFSHORE TODAY. A WEAK COLD FRONT WILL CROSS THE REGION MONDAY.
EXPECT VFR CONDITIONS TO CONTINUE THROUGH ABOUT 05Z/07, THEN BECOME MVFR DUE TO CIGS, AS AN UPPER LEVEL LOW PRESSURE SYSTEM MOVES IN.
1022 AM EST SUN DEC 6 2015 HIGH PRESSURE IN CONTROL TODAY.
FAST MOVING UPPER TROUGH IS COMING ONSHORE THIS MORNING AND WILL TRACK ACROSS THE INTERIOR NW DURING THE DAY.
A WEAK COLD FRONT WILL MOVE THROUGH THE STATE TODAY AND WILL CAUSE WINDS TO SHIFT FROM SW TO NW.
605 AM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL LINGER OVER THE UPPER OHIO VALLEY THROUGH TONIGHT. LOW PRESSURE WILL PASS TO THE SOUTH OF THE LOCAL AREA ON MONDAY.
641 AM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL REMAIN OVER PENNSYLVANIA THROUGH THE REST OF THIS WEEKEND. AS AN ANOMALOUS UPPER RIDGE BUILDS ALONG THE EAST COAST. WAA ALOFT IN ADVANCE OF MIDWESTERN UPPER LOW IS PRODUCING A BATCH OF THIN CIRRUS ACROSS THE GRT LKS EARLY THIS MORNING. ENSEMBLE MEAN 925 TEMPS SUPPORT HIGHS MOSTLY IN THE LOW 50S. AS ANOMALOUS UPPER RIDGE BUILDS ALONG THE E COAST. THE EXTENDED FCST APPEARS DRY AND INCREASINGLY WARM BENEATH BUILDING RIDGE. GEFS PLUME DATA AND ECEME MOS SUPPORT MIN TEMPS ABOVE FREEZING ACROSS THE ENTIRE CWA THU-SAT AND MAX TEMPS ARND 15F ABV NORMAL. HIGH PRESSURE REMAINS OVER PENNSYLVANIA.
HIGH TEMPERATURES WILL BE A FEW TO 12 DEGREES COOLER CENTRAL AND EAST TODAY IN THE WAKE OF YESTERDAYS COLD FRONT. A WARMING TREND WILL COMMENCE IN THE WEST AS A RIDGE OF HIGH PRESSURE CROSSES FROM THE WEST.
A MID LEVEL SHORT WAVE TROUGH WILL TRANSIT EAST ACROSS THE CENTRAL PLAINS TODAY. WITH A FOLLOW-ON RIDGE PUSHING HIGH PRESSURE SOUTHEAST OUT OF THE ROCKIES. WITH LIGHTER WINDS TONIGHT AND MONDAY AS HIGH PRESSURE SPREADS OVER THE AREA. HIGHS WILL BE IN THE LOW TO MID 70S WITH AN OVERNIGHT LOW TONIGHT FROM NEAR 50 TO AROUND 55.
SUBTROPICAL U/L RIDGE CONTINUES ACROSS THE GULF OF MEXICO AND FLORIDA PENINSULA WITH STRONG SUBSIDENCE CREATING A SHARP MID LEVEL SUBSIDENCE INVERSION OVER THE FORECAST AREA.
315 AM PST SUN DEC 6 2015 CONTINUED OFFSHORE FLOW AND A BUILDING RIDGE ALOFT WILL SUPPORT WARM AND DRY CONDITIONS THROUGH MID-WEEK.
THIS AREA OF DISTURBED WEATHER IS ASSOCIATED WITH A REMNANT FRONTAL SHEAR LINE WHICH HAS STALLED SOUTH OF A LARGE CONTINENTAL ANTICYCLONE. AND WE HAVE ALREADY UPDATED THE DIGITAL FORECAST DATABASE TO ACCOUNT FOR THE HIGHER WINDS. A LARGE HIGH PRESSURE SYSTEM OVER THE EASTERN UNITED STATES WILL MAINTAIN FRESH TO STRONG NORTHEAST TO EAST BREEZES THIS AFTERNOON.
733 AM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL REMAIN OVER PENNSYLVANIA THROUGH THE REST OF THIS WEEKEND. AS AN ANOMALOUS UPPER RIDGE BUILDS ALONG THE EAST COAST. WAA ALOFT IN ADVANCE OF MIDWESTERN UPPER LOW IS PRODUCING A BATCH OF THIN CIRRUS ACROSS THE GRT LKS EARLY THIS MORNING. ENSEMBLE MEAN 925 TEMPS SUPPORT HIGHS MOSTLY IN THE LOW 50S. AS ANOMALOUS UPPER RIDGE BUILDS ALONG THE E COAST. THE EXTENDED FCST APPEARS DRY AND INCREASINGLY WARM BENEATH BUILDING RIDGE. GEFS PLUME DATA AND ECEME MOS SUPPORT MIN TEMPS ABOVE FREEZING ACROSS THE ENTIRE CWA THU-SAT AND MAX TEMPS ARND 15F ABV NORMAL. A RIDGE OF HIGH PRESSURE WILL REMAIN OVER PENNSYLVANIA THROUGH THE REST OF THIS WEEKEND. A STRONG INVERSION CONTINUES TO TRAP MOISTURE IN THE LOW- LEVELS.
THEREFORE COOLER HIGHS IN THAT LOCATION ARE STILL WARRANTED. 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.
629 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.
N WINDS ~5-6 KTS AND VFR EXPECTED FOR REMAINDER OF TODAY AND EVENING AS WEAK COLD FRONT WITH WEAK HIGH PRESSURE BUILDING BEHIND IT. 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.
AND MONDAY A SFC TROF WAS MOVG INTO NW WI EARLY THIS MORNING. AS AN UPPER TROF APPROACHED FROM MN. IN ASSOCIATION WITH THE SFC TROF. HAVE DECIDED TO PULL ANY MENTION OF PCPN WITH THE SFC/UPPER TROFS TODAY. ALONG WITH COOLER TEMPS AND AREAS OF FOG. MIN TEMPS SHOULD RANGE FROM THE LOWER 20S NORTH TO THE LOWER TO MIDDLE 30S NEAR THE LAKESHORE. THE RIDGE AXIS WILL SHIFT EAST ON MONDAY. AND ANOTHER SFC TROF WILL APPROACH DURING THE AFTERNOON. HIGH TEMPS SHOULD ONCE AGAIN REACH THE LOWER TO MIDDLE 40S.
SFC ANALYSIS THIS MORNING HAS A WEAK COLD FRONT PUSHING THROUGH N TX AND W C TX WITH MAINLY JUST A WIND SHIFT BEHIND IT AND SOME SLIGHTLY DRIER AIR.
511 AM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL REMAIN OVER PENNSYLVANIA THROUGH THE REST OF THIS WEEKEND. AS AN ANOMALOUS UPPER RIDGE BUILDS ALONG THE EAST COAST. WAA ALOFT IN ADVANCE OF MIDWESTERN UPPER LOW IS PRODUCING A BATCH OF THIN CIRRUS ACROSS THE GRT LKS EARLY THIS MORNING. ENSEMBLE MEAN 925 TEMPS SUPPORT HIGHS MOSTLY IN THE LOW 50S. AS ANOMALOUS UPPER RIDGE BUILDS ALONG THE E COAST. THE EXTENDED FCST APPEARS DRY AND INCREASINGLY WARM BENEATH BUILDING RIDGE. GEFS PLUME DATA AND ECEME MOS SUPPORT MIN TEMPS ABOVE FREEZING ACROSS THE ENTIRE CWA THU-SAT AND MAX TEMPS ARND 15F ABV NORMAL. HIGH PRESSURE REMAINS OVER PENNSYLVANIA.
821 AM EST SUN DEC 6 2015 WATCH FOR AREAS OF DENSE FREEZING FOG. OTHERWISE 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 FORECAST AREA. 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.
929 AM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL LINGER OVER THE UPPER OHIO VALLEY THROUGH TONIGHT. LOW PRESSURE WILL PASS TO THE SOUTH OF THE LOCAL AREA ON MONDAY.
A COLD FRONT IS MOVING INTO CENTRAL TEXAS THIS MORNING AND WILL PRESS FORWARD TOWARD DEEP SOUTH TEXAS AND THE RGV. A MID LEVEL SHORT WAVE TROUGH WILL TRANSIT EAST ACROSS THE CENTRAL PLAINS TODAY. WITH A FOLLOW-ON RIDGE PUSHING HIGH PRESSURE SOUTHEAST OUT OF THE ROCKIES. WITH LIGHTER WINDS TONIGHT AND MONDAY AS HIGH PRESSURE SPREADS OVER THE AREA. HIGHS WILL BE IN THE LOW TO MID 70S WITH AN OVERNIGHT LOW TONIGHT FROM NEAR 50 TO AROUND 55.
SOME OF THE HIGHER VALLEYS MAY NOT GET ABOVE FREEZING AS COLDER AIR POOLS IN THE LOW LYING SPOTS.
ABOVE NORMAL TEMPERATURES WILL PERSIST ACROSS THE REGION THROUGH MUCH OF THE WEEK AS HIGH PRESSURE REMAINS IN CONTROL OF THE WEATHER.
/ISSUED 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.
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.
1017 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL REMAIN IN CONTROL THROUGH MONDAY.
MID-LEVEL CLOUDS MUCH THICKER OVER NE AL WHICH WILL LIKELY ADVECT INTO THE SOUTHERN TN VALLEY LATER TODAY AHEAD OF THE UPPER TROUGH. CHATTANOOGA AIRPORT, TN 60 43 57 35 / 0 10 10 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 57 41 53 34 / 0 10 20 10 OAK RIDGE, TN 56 42 53 35 / 0 20 30 10 TRI CITIES AIRPORT, TN 58 35 49 34 / 0 10 40 10.
WITH DENSE FOG AND TEMPERATURES AT OR BELOW FREEZING. FREEZING FOG WITH SOME SLICK ROADWAYS WILL BE POSSIBLE. AND THE WESTERN UPPER PENINSULA AS WELL AS THE VERY WEAK AND MOISTURE STARVED COLD FRONT STRETCHING FROM WESTERN UPPER TO CENTRAL IOWA. 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.
629 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL REMAIN IN CONTROL THROUGH MONDAY.
AN UPPER TROUGH MOVING ACROSS THE MIDDLE MS RIVER VALLEY WILL HELP TO PUSH A COLD FRONT ACROSS THE AREA TODAY. /ISSUED 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.
1055 AM EST SUN DEC 6 2015 MORNING CAPE SOUNDING SHOWS MOISTURE IN THE LOWEST 10K FT WITH SIGNIFICANT DRY AIR ABOVE A SHARP SUBSIDENCE INVERSION NEAR 700 MB. THE HIGH SURF ADVISORY WILL LIKELY BE ALLOWED TO EXPIRE LATE TODAY AS SEAS GRADUALLY SUBSIDE BELOW 8 FT THIS EVENING. HI PRES RIDGE SPANNING THE ERN SEABOARD WILL CONTINUE TO INTERACT WITH A REMNANT FRONTAL TROF OVER THE FL STRAITS/NRN BAHAMAS TO MAINTAIN A BREEZY NE FLOW ACRS THE FL PENINSULA. WINDS WILL GRADUALLY DIMINISH THRU THE DAY AS A SHORT WAVE TROF OVER THE NATION'S MIDSECTION NUDGES THE RIDGE INTO THE W ATLC WHERE IT WILL BEGIN TO MODIFY.
GUSTS OF 30-40 MPH CAN BE EXPECTED ACROSS THE EASTERN SIERRA AND FAR WESTERN NEVADA MAINLY THROUGH THE HIGHWAY 395/I580 CORRIDOR.
TEMPS IN THE LOWER 70S EXPECTED OVER SECTIONS OF INLAND SE GA AND NE FL.
947 AM CST SUN DEC 6 2015 Weak cold front, with little airmass change behind it, is currently pushing through eastern OK and will move through western AR by early this afternoon. Band of stratocu will quickly exith the region early this morning as a weak cold front moves through.
939 AM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL REMAIN OVER PENNSYLVANIA THROUGH THE REST OF THIS WEEKEND. AS AN ANOMALOUS UPPER RIDGE BUILDS ALONG THE EAST COAST. ENSEMBLE MEAN 925 TEMPS SUPPORT HIGHS MOSTLY IN THE LOW 50S. AS ANOMALOUS UPPER RIDGE BUILDS ALONG THE E COAST. THE EXTENDED FCST APPEARS DRY AND INCREASINGLY WARM BENEATH BUILDING RIDGE. GEFS PLUME DATA AND ECEME MOS SUPPORT MIN TEMPS ABOVE FREEZING ACROSS THE ENTIRE CWA THU-SAT AND MAX TEMPS ARND 15F ABV NORMAL. A RIDGE OF HIGH PRESSURE WILL REMAIN OVER PENNSYLVANIA THROUGH THE REST OF THIS WEEKEND. A STRONG INVERSION CONTINUES TO TRAP MOISTURE IN THE LOW- LEVELS.
A COLD FRONT THAT EXTENDED SOUTHEAST OF A KDUC /DUNCAN OK/ TO KRPH /GRAHAM/ TO KCOM /COLEMAN/ LINE AT 11Z WILL MOVE SOUTHEAST THROUGH THE METROPLEX AROUND MID-MORNING /14-15Z/ AND THROUGH WACO AROUND 16Z. 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.
Band of stratocu will quickly exith the region early this morning as a weak cold front moves through.
359 AM MST SUN DEC 6 2015 AN UPPER LEVEL RIDGE WILL BE OVER THE AREA TODAY WITH DRY WEATHER IN STORE. HIGH TEMPS TODAY SHOULD MOSTLY BE IN THE 50S ACROSS THE SOUTHEAST PLAINS AND IN THE 40S IN THE HIGH VALLEYS.
1002 AM EST SUN DEC 6 2015 HIGH PRESSURE WILL MAINTAIN DRY WEATHER AND MILD AFTERNOON TEMPERATURES. A LOW PRESSURE SYSTEM MAY BRING LIGHT RAIN TO AREAS SOUTH OF PITTSBURGH ON MONDAY.
647 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.
SO MOST AREAS SHOULD WARM TO AROUND 40 AND EVEN WARMER OVER SNOW FREE AREAS. 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.
ALTHOUGH SHEAR PROFILES SHOULD INCREASE TONIGHT AS A SRLY LLJ SHIFTS E INTO THE REGION AHEAD OF THE LONGWAVE TROUGH WHICH HAS SHOWN SIGNS OF CLOSING OFF LATE THIS AFTERNOON OVER THE DESERT SW. WITH ENHANCED CONVERGENCE ALONG THE SQUALL LINE/COLD FRONT ENHANCING RAIN RATES AS IT ENTERS THE WRN ZONES NEAR 12Z SUNDAY.
HIGH PRESSURE CENTERED TO OUR EAST WILL KEEP THINGS DRY BUT CONTINUE TO BRING WARM. THIS WILL MAKE FOR ANOTHER MILD NIGHT WITH LOWS ONLY DROPPING OFF INTO THE 50S ACROSS MUCH OF THE LOWER ELEVATIONS. CHATTANOOGA AIRPORT, TN 56 72 58 67 / 0 10 80 70 KNOXVILLE MCGHEE TYSON AIRPORT, TN 55 72 59 68 / 0 10 50 80 OAK RIDGE, TN 55 72 59 67 / 0 10 60 80 TRI CITIES AIRPORT, TN 49 72 56 69 / 0 10 20 80.
1043 PM EST SAT DEC 12 2015 A WARM FRONT WILL LIFT NORTH TONIGHT AS LOW PRESSURE MOVES INTO THE CENTRAL PLAINS.
THE LLWS WILL BECOME A BIT STRONGER DURING THE DAY ON SUNDAY AS A COLD FRONT MOVES INTO THE LOWER MS VALLEY. /ISSUED 313 PM CST SAT DEC 12 2015/ THE UNSEASONABLE AND NEAR RECORD BREAKING WARM CONDITIONS WILL CONTINUE TONIGHT INTO SUNDAY AS DEEP WAA/VEERING PROFILE REMAINS IN PLACE WITH DEEP RIDGING AND A MARITIME TROPICAL AIRMASS PREVAILING. DAYTIME HIGH TEMPERATURES ARE EXPECTED TO RISE INTO THE LOW 70S AGAIN ON SUNDAY WITH PLEASANT OVERNIGHT LOWS TONIGHT NEAR 60. MEANWHILE, THE TROUGH LOOKS TO SHIFT TO THE NORTHEAST ACROSS THE CENTRAL PLAINS AND CORN BELT REGIONS.
THERE IS MORE CONCERN ABOUT ICY ROADS EAST OF THE LARAMIE RANGE AS TEMPERATURES DROP INTO THE LOW 20S WITH WET ROADS. 700MB WINDS BEGIN PICKING UP SUNDAY AFTERNOON AS THE UPPER RIDGE AXIS MOVES INTO EASTERN WYOMING.
Easterly component to the low-level flow is advecting lower dewpoints into the region which could result in lower lows, if the winds die off substantially.
945 PM EST SAT DEC 12 2015 AVIATION SECTION UPDATED A STRONG UPPER RIDGE OVER THE EASTERN UNITED STATES WILL ALLOW RECORD HIGH TEMPERATURES TO CONTINUE THE REST OF THIS WEEKEND.
841 PM MST SAT DEC 12 2015 LOW PRESSURE WILL CONTINUE TO SLOWLY MOVE THROUGH THE REGION THROUGH THIS EVENING. RESULTING IN MOUNTAIN RAIN AND SNOW SHOWERS AND SUBSTANTIALLY COOLER TEMPERATURES.
A STRONG COLD FRONT WILL THEN SWEEP ACROSS NORTHERN AND CENTRAL NEVADA LATE SUNDAY AND SUNDAY NIGHT BRINGING GUSTY WINDS ALONG WITH 2 TO 4 INCHES OF SNOW TO MOST VALLEYS.
DEEPENING HIGH PRESSURE RIDGING ALOFT OVER THE REGION HAS ALLOWED MID-LEVEL TEMPERATURES (700/500MB) TO INCREASE OVER THE PAST 24HRS LIMITING DESTABILIZATION OF THE ATMOSPHERE. HIGH PRESSURE BEGINS TO DRIFT A BIT NORTH AND EAST AS LOWER PRESSURE NEAR THE BAHAMAS UNDERCUTS THE HIGH.
AN AREA OF SNOW COVER AND LIGHT EASTERLY WINDS ALONG THE HILINE EAST OF THE SWEET GRASS HILLS WILL CONTINUE TO SUPPORT RELATIVELY COLDER TEMPERATURES AND AREAS OF FREEZING FOG. MODELS REMAIN IN AGREEMENT THAT A LONGWAVE TROUGH WILL AMPLIFY OVER THE WESTERN U.
730 PM EST SAT DEC 12 2015 00Z SFC ANALYSIS SHOWS EASTERN KENTUCKY FIRMLY IN THE WARM SECTOR OF A DEEP LOW PRESSURE SYSTEM LIFTING OUT OF THE SOUTHERN PLAINS WITH ITS WARM FRONT WELL NORTH OF THE AREA. EXPECT THE HIGH CLOUDS TO THIN OVERNIGHT LEADING TO A DECENT RIDGE TO VALLEY TEMPERATURE DIFFERENCE. ALREADY THE EASTERN VALLEYS ARE RUNNING IN THE MID TO UPPER 50S WHILE RIDGES ARE AVERAGING 10 DEGREES WARMING IN THE MID 60S. ARE GENERALLY IN THE LOW TO MID 50S. STRONG RIDGING CONTINUES TO HOLD OVER THE EASTERN CONUS. THIS HAS LED TO TEMPERATURES INTO THE LOWER 70S THIS AFTERNOON. IT WILL BE A DIFFICULT TEMPERATURE FORECAST TONIGHT WITH RIDGES STAYING FAIRLY MILD IN THE UPPER 50S TO AROUND 60. SENDING A COLD FRONT ACROSS KENTUCKY.
THE LATE EVENING LOCAL SOUNDING SHOWS THAT MOISTURE HAS ONLY INCREASED A SMALL BIT IN THE LOWER LAYERS OVER THE PAST 12 HOURS.
WATER VAPOR IMAGERY SHOWS A SHORT WAVE RIDGE NOW PUSHING ASHORE OVER NORTHERN CALIFORNIA ALONG WITH A CLASSIC WARM AIR ADVECTION CLOUD SHIELD OVER THE PACIFIC NORTHWEST.
940 PM EST SAT DEC 12 2015 HIGH PRESSURE WILL PROVIDE FAIR AND WARM WEATHER THROUGH SUNDAY.
ALTHOUGH SFC TEMPS REMAINED BELOW FREEZING ALL DAY. LIKELY ENOUGH TO INCREASE THE LOW LEVEL BOUNDARY LAYER MOISTURE JUST ENOUGH. PERHAPS A FEW DEGREES WARMER THAN TODAY.
/39 HIGH PRESSURE WILL CONTINUE TO PUSH OFFSHORE THROUGH SUNDAY AS A COLD FRONT APPROACHES FROM THE WEST.
BREEZY SOUTH WINDS WILL ENSUE BEFORE A PACIFIC COLD FRONT MOVES THROUGH. SPECIFICALLY IN TERMS OF THE WRAP AROUND VARIETY AS AN UPPER LEVEL LOW PRESSURE SYSTEM MOVES ACROSS THE SOUTHERN PLAINS. THIS LARGE SCALE FORCING WILL BE SUPPLEMENTED BY FRONTOGENETICAL FORCING FROM A PACIFIC COLD FRONT CURRENTLY OVER EASTERN NEW MEXICO THAT WILL MOVE THROUGH THIS EVENING. CLOUDS AND COOLER TEMPERATURES WILL KEEP MIXED LAYER INSTABILITIES ON THE ORDER OF ONLY 500-600 J/KG OFF THE CAPROCK. THE PRESSURE GRADIENT WILL TIGHTEN BEHIND A SECONDARY COLD FRONT EARLY SUNDAY MORNING.
501 PM EST SAT DEC 12 2015 HIGH PRESSURE WILL PROVIDE FAIR AND WARM WEATHER THROUGH SUNDAY.
655 PM EST SAT DEC 12 2015 A WARM FRONT WILL LIFT NORTH TONIGHT AS LOW PRESSURE MOVES INTO THE CENTRAL PLAINS.
620 PM EST SAT DEC 12 2015 RECORD WARM TEMPERATURES WILL PERSIST THROUGH SUNDAY IN THE SOUTHERLY FLOW AROUND HIGH PRESSURE CENTERED TO THE EAST.
812 PM CST SAT DEC 12 2015 MID-STATE REMAINS IN TROPICAL-LIKE AIRMASS THIS EVE WITH A WARM FRONT NOW FROM THE PLAINS UP INTO THE GREAT LAKES.
941 PM EST SAT DEC 12 2015 RECORD WARM TEMPERATURES WILL PERSIST THROUGH SUNDAY IN THE SOUTHERLY FLOW AROUND HIGH PRESSURE CENTERED TO THE EAST.
815 PM MST SAT DEC 12 2015 UPPER LEVEL TROUGH IS MOVING EASTWARD AND SHIFTING PCPN EASTWARD ACROSS THE PLAINS. UPPER LOW MAKING PROGRESS ACROSS WESTERN NEW MEXICO AND WILL TRACK EASTWARD INTO THE TEXAS PANHANDLE BY SUNDAY AM. WARMER AND DRIER ON SUNDAY AS HIGH PRESSURE RIDGE ALOFT APPROACHES COLORADO FROM THE WEST.
A STRONG WARM FRONT WILL PUSH WEST OF THE CASCADES LATE THIS AFTERNOON, THEN EAST OF THE CASCADES THIS EVENING. EXCEPT AT THE HIGHEST ELEVATIONS. MEANWHILE, AN UPPER TROUGH OFFSHORE WILL DIG AND ENERGIZE A COLD FRONT THAT WILL MOVE ONSHORE BY SUNDAY MORNING.
546 PM CST SAT DEC 12 2015 An upper level low is currently across the southwestern U. Despite cloudy conditions temperatures are in the upper 60s to the lower 70s across the area, which are well above normal for December and in fact near record levels. With the upper level low still well off to the southwest and moving slowly to the east, height falls will remain well west of here this evening into the overnight hours keeping mid level lapse rate and instability in check. The higher totals will be more common over the western half of the area, where a couple of rounds of decent rain are expected. The lower end amounts look to be over the eastern half of the area, where the bulk of the rain occurs during the day Sunday.
727 PM EST SAT DEC 12 2015 A WARM FRONT WILL LIFT NORTH TONIGHT AS LOW PRESSURE MOVES INTO THE CENTRAL PLAINS.
Have refined PoPs for tonight and increased temperatures a few degrees for overnight lows given dewpoints continue to rise into the lower 60s areawide.