Aikyam-Lab/Synoptic-Bench huggingface dataset:
THE THUNDERSTORMS IN THIS AREA WERE UTILIZING THE LOWER LEVEL INSTABILITY AND THUS EXPECT THE TO REMAIN TIED TO THE EDGE OF THIS INSTABILITY. THE SOUTHERN CWA IS WHERE THE MORE ORGANIZED SHOWER AND THUNDERSTORM ACTIVITY SHOULD BE AS WELL SO THE HIGHEST POPS WILL BE THERE TOO. BUT WITH MID-UPPER RIDGE ACROSS THE REGION.
919 AM EDT THU JUN 4 2015 HIGH PRESSURE WILL MOVE EAST OF THE AREA TODAY AND TONIGHT. A COLD FRONT WILL APPROACH ON FRIDAY AND CROSS THE STATE FRIDAY NIGHT. HIGH PRESSURE WILL RETURN FOR THE WEEKEND. CURRENT SFC ANALYSIS PLACES 1026MB HIGH PRESSURE IN SRN MAINE AS OF 06Z. RIDGE AXIS EXTNDS NORTH INTO NEW BRUNSWICK. EXPECT THAT THIS LOW-LVL MOISTURE WL ERODE THIS MRNG LVG PARTLY SUNNY SKIES THRU THE DAY. DRY WX WL DOMINATE THRU TONIGHT AS H5 RIDGE SLIDES EAST AFT 06Z TONIGHT IN RESPONSE TO APPCHG UL TROF. CLOUDS WILL INCREASE ON FRIDAY AS MOISTURE AHEAD OF AN APPROACHING COLD FRONT SPREADS ACROSS THE REGION. NORTHERN AREAS MAY BE A BIT WARMER WITH HIGHS CLOSE TO 70. SHOWERS WILL SPREAD ACROSS THE REGION FROM NORTHWEST TO SOUTHEAST FRIDAY EVENING AS THE COLD FRONT PUSHES ACROSS THE AREA.
UPPER LEVEL LOW PRESSURE WILL SHIFT EAST ACROSS THE CAROLINAS THROUGH TONIGHT. THE LOW WILL MOVE OUT TO SEA ON FRIDAY.
624 AM CDT THU JUN 4 2015 FOR 12Z TAFS /ISSUED 543 AM CDT THU JUN 4 2015/ LATEST WATER VAPOR SATELLITE ANIMATION SUGGESTS THAT UPPER LOW OVER THE SOUTHERN APPALACHIANS IS CONTINUING TO DRIFT SOUTHEASTWARD ACROSS THE SAVANNAH RIVER VALLEY THIS MORNING. ISOLATED AFTERNOON CONVECTION WILL REMAIN A POSSIBILITY -- ESPECIALLY FOR THE EASTERN HALF OF THE FORECAST AREA WHERE WEAK UPSLOPE FLOW MAY DEVELOP IN THE HIGHER TERRAIN AND ML CAPE VALUES WILL RANGE FROM 500-1000 J/KG. A MID-LEVEL VORTICITY MAXIMA -- CURRENTLY CROSSING THE CENTRAL ROCKIES -- IS FORECAST TO ROUND THE TOP OF THE STRENGTHENING SOUTHERN PLAINS RIDGE AND BEGIN DIGGING SOUTHEASTWARD OVER THE MID- MISSISSIPPI VALLEY BY FRIDAY AFTERNOON.
HIGH PRESSURE DOMINATING ACROSS THE REGION AGAIN TODAY AFTER ANOTHER PLEASANTLY AND SEASONABLY COOL MORNING. TEMPERATURES WILL RUN ONLY A FEW DEGREES WARMER THAN YESTERDAY. /ISSUED 423 AM CDT THU JUN 4 2015/ A PRONOUNCED SUBTROPICAL RIDGE AXIS WILL PERSIST OVER THE SOUTHERN PLAINS/OZARKS WHILE A MID/UPPER LEVEL LOW OVER THE SOUTH ATLANTIC STATES CONTINUES TO HELP DRAW DRIER AIR SOUTHWARD INTO THE ARKLAMISS REGION. OUR REGION WILL REMAIN ON THE EASTERN SIDE OF AN UPPER RIDGE THAT WILL BE LOCATED OVER TEXAS.
HIGH PRESSURE ALOFT WILL SLOWLY BUILD OVER THE AREA THROUGH TONIGHT. LOOK FOR HIGH PRESSURE ALOFT TO PREVAIL OVER THE REGION THROUGH THIS WEEKEND FOR ABOVE NORMAL TEMPERATURES. ANTICIPATE DRY AND WARMER WEATHER. AN UPPER LEVEL RIDGE CENTERED OFFSHORE WILL GRADUALLY BUILD INTO THE AREA THROUGH TONIGHT IN THE WAKE OF THE SLOWLY DEPARTING UPPER TROF.
/ISSUED 404 AM EDT THU JUN 4 2015/ MODELS CONSISTENT WITH DRIFTING AN UPPER LOW PRESSURE SYSTEM EAST ACROSS THE CAROLINAS TODAY AND TO THE EAST COAST THROUGH FRIDAY.
UPPER LOW OVER THE CAROLINAS AND ASSOCIATED COLD AIR ALOFT WILL KEEP A CHANCE OF CONVECTION AT PRIMARLY TRI BETWEEN 20Z AND 01Z.
1001 AM EDT THU JUN 4 2015 HIGH PRESSURE WILL CONTINUE TO MOVE EAST OF THE AREA TODAY. LOW PRESSURE WILL MOVE EAST ACROSS THE CENTRAL GREAT LAKES REGION DRAGGING A WEAK COLD FRONT ACROSS THE AREA FRIDAY. HIGH PRESSURE WILL BUILD SOUTHEAST ACROSS THE GREAT LAKES INTO MAINE OVER THE WEEKEND. CURRENT SATELLITE PRESENTATION SHOWS HIGH PRESSURE AT THE SURFACE AND SUBSIDENCE/DRYING ALOFT. MOISTURE FROM THE UPPER LEVEL LOW PRESSURE TO THE SOUTHEAST WILL BEGIN TO PULL OUT TO THE EAST OVERNIGHT. SOME DRIER AIR WILL BEGIN TO PUSH INTO THE REGION OVERNIGHT FOR A SHORT PERIOD AHEAD OF THE COLD FRONT. A WEAK COLD FRONT IS PROGGED TO MOVE THROUGH THE AREA FRIDAY IN THE WAKE OF A LOW PRESSURE SYSTEM THAT IS EXPECTED TO MOVE EAST ACROSS THE CENTRAL GREAT LAKES REGION.
LOWS TONIGHT WILL DIP INTO THE LOW TO MID 60S. BUT NERVOUS THAT FULL MIXOUT MAY NOT OCCUR WHICH WOULD ALLOW FOR MOSTLY CLOUDY SKIES AND COOLER THAN FORECASTED HIGHS. THE CLOUDS WILL ALLOW FOR A WARMER START TO THE MORNING WITH HIGH REACHING WELL INTO THE 70S AND HOPEFULLY NEAR 80. A WARM AND MUGGY NIGHT WILL BE SEEN WITH LOWS IN THE LOWER 60S.
THE 850MB RIDGE SHOULD ACT AS SOMEWHAT OF AN EASTERN EDGE TO THE EXTENT OF THE CONVECTION THIS MORNING AND THEREFORE DONT EXPECT MUCH IMPACT BEYOND THE FAR SOUTHWEST THROUGH THE MORNING HOURS. HOWEVER THE STRONGER SYNOPTIC FORCING REALLY DOESNT ARRIVE UNTIL LATER AND THERE IS SOME QUESTION IF THE MORE ROBUST CONVECTION WILL WAIT UNTIL LATER THIS EVENING INTO TONIGHT WHEN THE LOW LEVEL JET INTENSIFIES.
LIGHT REFLECTIVITIES EXTENDING FROM AROUND BEACH AND MEDORA SOUTHWEST THROUGH HETTINGER AND SELFRIDGE. THE UPPER LEVEL FLOW OVER THE WESTERN DAKOTAS WAS BECOMING SOUTHWESTERLY AS THE DOWNSTREAM RIDGE AXIS OF A LONGWAVE TROUGH OVER THE WEST COAST WAS OVER THE CENTRAL DAKOTAS EARLY THIS MORNING. THE IMPULSE WILL LIKELY LOSE ITS EFFECT AS A PRECIPITATION-MAKER AS IT RUNS INTO THE VERY DRY AIR ASSOCIATED WITH A LARGE HIGH PRESSURE SYSTEM CENTERED OVER WESTERN ONTARIO AND EXTENDING INTO MANITOBA AND EASTERN NORTH DAKOTA. TEMPERATURES SHOULD REACH THE LOWER 70S OVER THE EAST HALF OF CENTRAL NORTH DAKOTA - THE TURTLE MOUNTAINS AND JAMES RIVER VALLEY.
AN UPPER LEVEL LOW WILL MOVE OVER THE REGION FOR COOLER TEMPERATURES AND PARTLY CLOUDY SKIES. SYNOPTICALLY AN UPPER LEVEL LOW CURRENTLY OVERHEAD WILL PROGRESS FIRST TO SOUTHERN CALIFORNIA AND THEN INTO NEVADA OVER THE NEXT FEW DAYS. GENERALLY THE ONLY IMPACT WILL BE TO HELP KEEP US WITH COOLER THAN NORMAL TEMPS. HIGH CLOUDS HAVE MOVED TO THE SOUTH AND EAST AS THE UPPER LEVEL TROUGH CONTINUES TO DIG OFF THE COAST.
959 AM EDT THU JUN 4 2015 HIGH PRESSURE OVERHEAD WILL SHIFT OFFSHORE TODAY. A COLD FRONT WILL APPROACH FROM THE NORTH THURSDAY NIGHT AND WILL DROP SOUTH INTO THE MOUNTAINS ON FRIDAY AND THEN THE REST OF THE REGION FRIDAY NIGHT.
AS MID LEVEL RIDGING REMAINS CENTERED OVER THE SOUTHERN PLAINS.
16 /ISSUED 423 AM CDT THU JUN 4 2015/ QUIET MORNING ACROSS CENTRAL ALABAMA AS AN UPPER LEVEL LOW CONTINUES TO PULL AWAY FROM THE AREA AND INTO THE CAROLINAS TODAY. AS WEAK IMPULSES WITHIN NORTHERLY FLOW ROTATE AROUND THE UPPER LOW.
733 AM EDT THU JUN 4 2015 LOW PRESSURE WILL DEVELOP ALONG A COASTAL FRONT OFF THE CAROLINA COAST TODAY AND TONIGHT. WHILE HIGH PRESSURE REMAINS OVER THE CENTRAL APPALACHIANS. THE LOW WILL MOVE EAST AND THE WEDGE OF HIGH PRESSURE WILL ERODE ON FRIDAY. A COLD FRONT WILL MOVE THROUGH THE AREA OVER THE WEEKEND. A STATIONARY COASTAL FRONT AND WEDGE OF HIGH PRESSURE OVER THE APPALACHIANS WILL REMAIN IN PLACE TODAY AND TONIGHT. AND THEREFORE THE WARMER TEMPERATURES AND MORE UNSTABLE AIR.
A BROAD AREA OF UPPER LEVEL RIDGING CENTERED OVER THE SOUTHERN PLAINS WILL STRENGTHEN.
THE WEATHER PATTERN WILL SHIFT FRIDAY AS A DEVELOPING LOW PRESSURE SYSTEM ON THE CALIFORNIA COAST AND HIGH PRESSURE OVER TEXAS FUNNEL SUBTROPICAL MOISTURE NORTHWARD OVER NEW MEXICO.
WEAK HIGH PRESSURE WILL PROVIDE DRY CONDITIONS TODAY BUT A FRONT AND AN UPPER LEVEL SYSTEM WILL BRING A CHANCE FOR RAIN FRIDAY.
LEFT 20 POPS IN THE EAST GIVEN THE RESIDUAL MOISTURE FROM UPPER LOW CURRENTLY LOCATED OVER THE WESTERN CAROLINAS.
/ISSUED 303 AM CDT THU JUN 4 2015/ AS UPPER RIDGE BUILDS OVER SOUTHERN PLAINS. AND BACKDOOR COLD FRONT ENTERING NORTHERN AR.
942 AM CDT THU JUN 4 2015 RIDGE CITY WITH UPPER RIDGE AXIS PLANTED OVER THE SOUTHERN PLAINS. /ISSUED 422 AM CDT THU JUN 4 2015/ THE UPPER LEVEL RIDGE WAS CONTINUING TO BUILD OVER THE WESTERN AND CENTRAL PORTIONS OF THE STATE THIS MORNING. A CONSENSUS OF THE THE HIGH RESOLUTION MODELS FORECASTS ISOLATED SHOWERS IN THE VICINITY OF THE FRONT THROUGH MID MORNING. THE MODELS THEN BUILD THE UPPER LEVEL RIDGE OVER SE TEXAS BEGINNING ON FRIDAY THROUGH THE WEEKEND. THIS WILL LIKELY END EVEN THE VERY LOW RAIN CHANCES AND LEAD TO DAYTIME HIGH TEMPERATURES TO BE SLIGHTLY WARMER INTO THE LOWER 90S OVER THE INLAND AREAS.
DUE TO PLACEMENT OF THE UPPER LOW CENTERED NEAR GSP THIS MORNING. CHATTANOOGA AIRPORT, TN 84 65 86 66 / 20 10 10 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 82 63 84 65 / 20 10 20 10 OAK RIDGE, TN 83 65 85 66 / 20 10 20 10 TRI CITIES AIRPORT, TN 81 60 81 61 / 30 30 40 20.
THE DEVELOPING UPPER-LEVEL LOW EMBEDDED IN THE TROUGH OVER CALIFORNIA IS BEGINNING TO ENTRAIN SOME MID AND UPPER-LEVEL MOISTURE. /ISSUED 528 AM PDT THU JUN 4 2015/ ANOTHER MID/UPPER LEVEL WEST COAST TROUGH IS PRODUCING SOME BREEZY CONDITIONS OVER CENTRAL CALIFORNIA BENEATH A SWATH OF MID AND HIGH LEVEL CLOUDS ROTATING ACROSS THE REGION.
A MID LEVEL RIDGE ANCHORED OVER NORTHWEST MEXICO AND THE SOUTH CENTRAL UNITED STATES. BUT SUFFICIENT MOISTURE EXISTS IN THE LOWER LEVELS TO SUPPORT ISOLATED COASTAL AND/OR SEA BREEZE SHOWERS THE NEXT 36 HOURS.
but warmer weather will continue over the next several days.
BUT HAVE SINCE REBOUNDED INTO THE LOWER 60S. THE COOLER AND DRIER AIR IS DUE TO A SHALLOW LAYER OF STRONG NORTHEASTERLY BREEZES. THESE BREEZES EMINATE FROM AN EASTWARD MOVING CONTINENTAL HIGH PRESSURE SYSTEM IN THE SOUTHEASTERN UNITED STATES. EVIDENCE OF THE EXPANDING HIGH PRESSURE SYSTEM. A LARGE AREA OF HIGH PRESSURE OVER THE SOUTHEASTERN UNITED STATES WILL PROGRESS TO THE NORTHEAST OVERNIGHT THROUGH TUESDAY NIGHT.
548 PM CST MON NOV 23 2015 High pressure over the Southeast US has lead to warmer weather across the area today as temperatures warmed into the lower 60s with clear skies and light southwest winds.
ALOFT AN UPPER RIDGE AXIS GENERALLY OVER W TX SHIFTS EAST TO THE MS RIVER VALLEY THROUGH TONIGHT. LATEST SATELLITE LOOPS CONTINUE TO SHOW SCATTERED MID TO HIGH CLOUDS OVER WEST TX OR NEAR THE RIDGE AXIS PROGGED TO SHIFT EAST TO THE LOWER MS RIVER VALLEY INCLUDING WESTERN PARTS OF THE FORECAST AREA BY LATE TUE AFTERNOON. WITH THIS PATTERN EXPECT ANOTHER COLD NIGHT FOR ALL AREAS TONIGHT THOUGH SLIGHTLY WARMER THAN LAST NIGHT. FOR TUE WITH BETTER RIDGING ALOFT ALONG WITH PLENTY OF SUNSHINE DAYTIME TEMPS WILL CLIMB TO NEAR OR JUST BELOW SEASONAL LEVELS. AS FOR TEMPS WILL LEAN TOWARDS THE COOLER MAV GUIDANCE FOR LOWS TONIGHT.
STILL BELOW FREEZING MOST PLACES TONIGHT BUT TEMPERATURES WILL NOT DROP AS FAR AS LAST NIGHT ESPECIALLY UNDER AREAS WITH CLOUD COVER. THE PACIFIC LOW PRESSURE SYSTEM MOVES OVER THE GREAT BASIN ON WED. THE ECMWF AND GFS AGREE THAT HIGH PRESSURE WILL GRADUALLY FOLD OVER THE TOP OF THE LOW ACROSS BRITISH COLUMBIA AND FORM A REX BLOCK BY LATE THU. WITH THE LOW REMAINING UPSTREAM THROUGH THANKSGIVING DAY. BY FRI SOME OF THE TROPICAL MOISTURE THAT HAD BEEN STREAMING ACROSS WEST CENTRAL MEXICO AND ACROSS TEXAS MAY GET WRAPPED INTO THE SOUTHERN FLOW AHEAD OF THE LOW.
KABI should be on the northern edge of the low cloud development. With dewpoints remaining on the low side, the threat for rain over the next 24 hours is minimal. Increasing southerly flow will yield a significant increase in low-level moisture, with dewpoints progged to climb into the lower 50s by Tuesday afternoon. Johnson (Tuesday night through Monday) There will be an upper low spinning just off the Pacific Northwest coastline Tuesday night with a pseudo-zonal upper flow aloft over West Central Texas.
618 PM EST MON NOV 23 2015 WARM FRONT WITH CLOUDS THIS EVENING. HIGH PRESSURE BUILDS BACK IN ON TUESDAY AND DOMINATES THROUGH THANKSGIVING.
525 PM CST MON NOV 23 2015 FOR 00Z TAFS /ISSUED 234 PM CST MON NOV 23 2015/ LATEST WATER VAPOR IMAGERY SHOWS A BROAD UPPER TROUGH SITUATED OVER THE NORTHEASTERN CONUS. AS A RIDGE BUILDS OVER THE WEST AND INTO THE MISSISSIPPI VALLEY. HIGH PRESSURE REMAINS ANCHORED ACROSS THE SOUTHEAST. AS AN UPPER LEVEL TROUGH BEGINS TO DIG SOUTHWARD ALONG THE WEST COAST. AS THE TROUGH OVER THE WEST STRENGTHENS. A PIECE OF ENERGY BREAKS AWAY FROM THE LONGWAVE TROUGH AND BECOMES NEARLY STATIONARY OVER THE SOUTHWEST CONUS. SETTING UP A BLOCKING PATTERN OVER THE US. THE MAIN TROUGH WILL CONTINUE TO PUSH EASTWARD. UPPER LEVEL RIDGING WILL BEGIN TO BUILD INTO THE SOUTHEAST KEEPING THE TN VALLEY REMAINING RAIN FREE THROUGH AT LEAST THANKSGIVING.
EVEN AS UPPER LEVEL TROUGH REMAINS IN PLACE ACROSS THE EASTERN CONUS.
/ISSUED 630 PM EST MON NOV 23 2015/ HIGH PRESSURE CENTERED OVER LA/MS/AL IS DOMINATING THE WEATHER PATTERN ACROSS THE GULF COAST AND SOUTHEASTERN STATES. THIS RIDGE WILL KEEP THINGS MOSTLY CLEAR AND DRY THROUGH THE SHORT TERM. TEMPS TONIGHT WILL BE COLD AGAIN BUT ONLY LOOKING FOR THEM TO GET DOWN INTO THE LOWER 30SWITH SOME ISOLATED SPOTS ACROSS EXTREME NORTH GA IN THE UPPER 20S.
WHILE OVERNIGHT LOWS WILL BE 10 DEGREES OR SO WARMER THAN LAST NIGHT. AND ATTENDANT SURFACE COLD FRONT SAGGING INTO THE SRN PLAINS.
/ISSUED 325 PM CST MON NOV 23 2015/ UPPER LEVEL RIDGING WILL BUILD OVER THE FORECAST AREA AS HIGH PRESSURE OVER THE SOUTHEASTERN STATES KEEPS DRY WEATHER AND WARMER TEMPERATURES OVER THE MID SOUTH THROUGH THANKSGIVING DAY.
HIGH RISK OF RIP CURRENTS ATLANTIC BEACHES THROUGH THE HOLIDAY THE MAIN WEATHER STORY THIS WEEK WILL BE PERSISTENT HIGH PRESSURE OVER THE MID ATLANTIC/WESTERN ATLANTIC WITH A TIGHT PRESSURE GRADIENT ACROSS FLORIDA.
WET WEATHER SYSTEM IS FORECAST TO PUSH A COLD FRONT THROUGH THE REGION ON TUESDAY AND RESULT IN WIDESPREAD LIGHT TO MODERATE PRECIPITATION.
930 PM EST MON NOV 23 2015 DRY HIGH PRESSURE TO THE NORTH OF THE REGION WILL DOMINATE FOR THE NEXT FEW DAYS KEEPING A RATHER BREEZY EAST TO NORTHEAST FLOW ACROSS THE AREA.
SURFACE ANALYSIS THIS EVENING SHOWS AN AREA OF HIGH PRESSURE CENTERED OVER CENTRAL AL AND SHIFTING GRADUALLY EASTWARD. 77 /ISSUED 234 PM CST MON NOV 23 2015/ LATEST WATER VAPOR IMAGERY SHOWS A BROAD UPPER TROUGH SITUATED OVER THE NORTHEASTERN CONUS. AS A RIDGE BUILDS OVER THE WEST AND INTO THE MISSISSIPPI VALLEY. HIGH PRESSURE REMAINS ANCHORED ACROSS THE SOUTHEAST. AS AN UPPER LEVEL TROUGH BEGINS TO DIG SOUTHWARD ALONG THE WEST COAST. AS THE TROUGH OVER THE WEST STRENGTHENS. A PIECE OF ENERGY BREAKS AWAY FROM THE LONGWAVE TROUGH AND BECOMES NEARLY STATIONARY OVER THE SOUTHWEST CONUS. SETTING UP A BLOCKING PATTERN OVER THE US. THE MAIN TROUGH WILL CONTINUE TO PUSH EASTWARD. UPPER LEVEL RIDGING WILL BEGIN TO BUILD INTO THE SOUTHEAST KEEPING THE TN VALLEY REMAINING RAIN FREE THROUGH AT LEAST THANKSGIVING.
706 PM EST MON NOV 23 2015 A DEEP UPPER TROUGH WILL KEEP MAINLY DRY CONDITIONS AND BELOW NORMAL TEMPERATURES OVER THE AREA THROUGH TUESDAY.
939 PM EST MON NOV 23 2015 HIGH PRESSURE WILL BUILD INTO THE AREA THROUGH TUESDAY, THEN EXTEND OVER THE AREA FROM THE NORTHEAST THROUGH THE END OF THE WEEK. A COLD FRONT WILL MOVE THROUGH OVER THE WEEKEND. ANTICIPATE DEW POINTS TO CONTINUE TO DROP AS DRY HIGH PRESSURE BUILDS INTO THE AREA. HIGH PRESSURE WILL SETTLE OVER E NC TONIGHT WITH NW WINDS BECOMING CALM AFTER SUNSET.
539 PM CST MON NOV 23 2015 00Z TAF CYCLE UPPER TROUGH WILL TRACK EAST ACROSS THE PANHANDLES TONIGHT AND TUESDAY.
715 PM EST MON NOV 23 2015 HIGH PRESSURE CENTERED OVER THE OHIO VALLEY WILL BE FORCED SOUTH AS A WEAK TROUGH MOVES ACROSS THE EASTERN LAKES THIS EVENING.
INCREASING SOUTHERLY FLOW IN THE LOW-LEVELS WILL BRING A RETURN OF LOW CLOUDS AFTER MIDNIGHT TO THE REGION. OVERNIGHT LOWS WILL BE MUCH WARMER COMPARED TO THE PAST TWO NIGHTS. THE LOW-LEVEL JET WILL STRENGTHEN TUESDAY NIGHT AND WE EXPECT SOME LIGHT RAIN TO DEVELOP ACROSS THE SOUTHERN EDWARDS PLATEAU AND HILL COUNTRY.
652 PM EST MON NOV 23 2015 HIGH PRESSURE WILL BUILD INTO THE REGION TONIGHT AND TUESDAY.
CHATTANOOGA AIRPORT, TN 31 57 35 60 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 29 54 33 58 / 0 0 0 0 OAK RIDGE, TN 30 54 33 58 / 0 0 0 0 TRI CITIES AIRPORT, TN 26 52 29 56 / 0 0 0 0.
Temperatures on Tuesday will be similar to Monday although a few degrees cooler given the expectation of increased clouds by afternoon, and should see highs in the middle 50s to around 60. and low pressure along the eastern edge of the Rockies. This surface pattern will result in modest southerly flow into the region, which should keep low temperatures Tuesday night warmer in the mid/upper 40s and possibly even rising a few degrees after midnight.
652 PM EST MON NOV 23 2015 WEAK LOW PRESSURE WILL INCREASE CLOUD COVER TONIGHT. HIGH PRESSURE WILL BRING DRY WEATHER AND SLOWLY WARMING TEMPERATURES THROUGH MUCH OF THE WEEK. FLOW IN THE LOW-LEVELS REMAINS OUT OF THE SOUTHWEST. AFTER THE TROUGH AXIS SHIFTS EAST LATE TONIGHT. IN THE WAKE OF THE WEAK TROUGH.
Winds at the surface will generally be from the south due to a trough of low pressure across eastern Colorado and a dome of high pressure across the southeast United States. As for temperatures, lows overnight look to range from the lower 20s across west central Kansas to mid 30s across south central Kansas.
543 PM CST MON NOV 23 2015 LIGHT SNOW SHOWERS AFFECTING PORTIONS OF THE NORTHLAND THIS AFTERNOON ALONG WITH PLENTY OF CLOUD COVER AND TEMPERATURES IN THE LOWER TO MIDDLE 30S. HAVE GONE WITH A MOSTLY CLOUDY FORECAST FOR TONIGHT AND TUESDAY WITH CORRESPONDINGLY WARMER MINS TONIGHT AND COLDER LOWS TUESDAY.
724 PM EST MON NOV 23 2015 A WEAKENING LOW PRESSURE AREA MOVING SOUTHEAST FROM THE GREAT LAKES WILL BRING INCREASING CLOUDINESS OVERNIGHT TO THE NORTH COUNTRY ALONG WITH A SLIGHT CHANCE OF SNOW SHOWERS OVER NORTHERN NEW YORK AFTER MIDNIGHT. A RIDGE OF HIGH PRESSURE WILL BUILD INTO THE REGION TUESDAY NIGHT AND WILL REMAIN THROUGH THANKSGIVING. CONTINUED CHILLY WITH LOW TEMPS IN THE LOWER 20S ACROSS THE CHAMPLAIN AND ST.
603 PM CST MON NOV 23 2015 BROAD NWRLY FLOW ALOFT FORMED BY A SLOWLY EXITING LONG WAVE TROUGH ACROSS THE EASTERN STATES AND BROAD. WEAK RIDGING IN THE WEST. A DEVELOPING LONG WAVE TROUGH WHICH WILL BE SLIDING EWD TO THE WEST COAST. PREVIOUSLY MENTIONED LEAD SHORT WAVE WILL PIVOT NEWD INTO THE HIGH PLAINS DURING THE DAY TUES. HAVE TRENDED FCST TWD THE HIGH END OF THE ENVELOPE OF POSSIBILITIES AS A RESULT AND ALSO BECAUSE TEMPS HAVE WARMED ABOVE EXPECTTED LEVELS THE LAST TWO DAYS.
1000 PM EST MON NOV 23 2015 HIGH PRESSURE WILL BUILD INTO THE REGION TONIGHT AND TUESDAY.
DRY WEATHER AND WARMER THAN NORMAL DAYTIME TEMPERATURES WILL CONTINUE ACROSS NORTHERN ARIZONA INTO TUESDAY.
704 PM EST MON NOV 23 2015 AVIATION HIGH PRESSURE OVER THE CENTRAL APPALACHIANS WILL STRENGTHEN TONIGHT AND TUESDAY.
HIGH PRESSURE WILL BUILD INTO THE AREA AND BECOME CENTERED OVER THE REGION ON TUESDAY. THE HIGH PRESSURE CENTER WILL SHIFT OFF THE NEW ENGLAND COAST MID WEEK WITH A COLD FRONT APPROACHING THE AREA EARLY IN THE WEEKEND.
LIGHT SNOW SHOWERS AFFECTING PORTIONS OF THE NORTHLAND THIS AFTERNOON ALONG WITH PLENTY OF CLOUD COVER AND TEMPERATURES IN THE LOWER TO MIDDLE 30S. HAVE GONE WITH A MOSTLY CLOUDY FORECAST FOR TONIGHT AND TUESDAY WITH CORRESPONDINGLY WARMER MINS TONIGHT AND COLDER LOWS TUESDAY.
757 PM CST MON NOV 23 2015 00Z UPPER AIR/SFC ANALYSIS INDICATES UPPER RIDGING SLOWLY BUILDING IN FROM THE SW WHILE LONGWAVE TROUGH IS OVER THE APPALACHIANS/NE CONUS. UNDER THIS UPPER/SFC RIDGING A VERY DRY ATMOSPHERE WITH PW'S ONLY AROUND A QUARTER OF AN INCH ARE IN THE AREA. LIGHT WINDS AND DRY CONDITIONS UNDER THE RIDGE AXIS WILL LEAD TO EFFICIENT RADIATIONAL COOLING OVERNIGHT. HIGH PRESSURE AT THE SURFACE DRIFTING EAST THROUGH THE ARKLAMISS TONIGHT WILL RESULT IN ANOTHER CHILLY NIGHT ACROSS THE AREA. WHILE MUCH OF THE FORECAST AREA WILL AGAIN EXPERIENCE FREEZING AND SUB-FREEZING TEMPERATURES OVERNIGHT. WITH A LOW AMPLITUDE RIDGE AXIS BUILDING THROUGH THE REGION.
841 PM EST MON NOV 23 2015 A WEAKENING COLD FRONT WILL CROSS THE AREA LATE TONIGHT AND TUESDAY MORNING AS IT DISSIPATES.
TEMPS WILL AVERAGE 10-12 DEGREES WARMER FOR WED MORNING EXPECTING UPPER 40S C LA TO UPPER 50S SE TX. WITH HIGHS IN THE LOWER 70S. EXPECT LOW TO BE ANOTHER 8-10 DEGREES WARMER WITH UPPER 50S C LA TO MID 60S SE TX & COASTAL SW LA. WITH THE LARGE UPPER LEVEL LOW ACROSS THE WEST SLOWLY MOVING EAST. DML HIGH PRESSURE WILL SETTLE OVER THE EASTERN U.
TEMPERATURES WILL CONTINUE TO BE ABOVE NORMAL TODAY AS HIGH PRESSURE OVER THE REGIONS WEAKENS.
1002 PM EST MON NOV 23 2015 WEAK LOW PRESSURE WILL INCREASE CLOUD COVER TONIGHT. HIGH PRESSURE WILL BRING DRY WEATHER AND SLOWLY WARMING TEMPERATURES THROUGH MUCH OF THE WEEK. FLOW IN THE LOW-LEVELS REMAINS LARGELY OUT OF THE SOUTHWEST. AFTER THE TROUGH AXIS SHIFTS EAST LATE TONIGHT. IN THE WAKE OF THE WEAK TROUGH.
652 PM EST MON NOV 23 2015 UPPER AIR PATTERN CONSISTS OF A 500 MB TROUGH OVER THE LOWER GREAT LAKES AND A TROUGH OFF THE NORTHERN CA COAST THIS MORNING. NO CHANGES TO GOING FORECAST AND SHOULD BE QUIET ON TUE WITH SFC RIDGING BUILDING INTO THE AREA.
AND WITH FALLING 500MB HEIGHTS IN THE WEST AS THE NEXT UPSTREAM TROUGH DEEPENS AND COMES ASHORE. 125KT UPPER-LEVEL JET WAS PUNCHING IN BEHIND THIS DEVELOPING TROUGH. WITH READINGS IN THE UPPER SINGLE DIGITS INTO THE HIGH PLAINS.
TONIGHT AND TOMORROW SHOULD BE FAIRLY QUIET WITH UPPER RIDGING BUILDING IN BETWEEN SYSTEMS FOR A SHORT TIME. WITH THE LOW LEVEL MOISTURE COMING IN SOME FOG IS NOT COMPLETELY OUT OF THE QUESTION. BUT AT THIS POINT THINK THAT THE COVERAGE WILL BE MOSTLY CLOUDS AS THE MODEL RH FIELDS DO NOT GET REALLY SATURATED AT THE LOWEST LEVELS UNTIL LATER. WITH PLENTY OF MOISTURE COMING UP AHEAD OF THE TROUGH AXIS. MODELS ALL SPIT OUT SOME VERY VERY LIGHT PRECIP AS THE TROUGH AXIS COMES THROUGH. WITH MOSTLY THE LOWER LAYERS BECOMING SATURATED. THINK THAT IF WE GET ANY PRECIP IT WILL BE MORE IN THE FORM OF FREEZING DRIZZLE WITH MAYBE A BIT OF SNOW LATER ON. AS OF NOW JUST HAVE SLIGHT CHANCE OF FREEZING DRIZZLE MENTION WITH SOME VERY LIGHT QPF RATHER THAN A COVERAGE MENTION.
711 PM EST MON NOV 23 2015 HIGH PRESSURE WILL BUILD INTO THE AREA THROUGH TUESDAY, THEN EXTEND OVER THE AREA FROM THE NORTHEAST THROUGH THE END OF THE WEEK. A COLD FRONT WILL MOVE THROUGH OVER THE WEEKEND. HIGH PRESSURE WILL SETTLE OVER E NC TONIGHT WITH NW WINDS BECOMING CALM AFTER SUNSET.
AS HIGH PRESSURE SETTLES INTO THE REGION BEHIND A COLD FRONT.
/ISSUED 322 PM CST MON NOV 23 2015/ HIGH PRESSURE OVER CENTRAL MISSISSIPPI THIS AFTERNOON PROVIDING GENERALLY CLEAR SKIES AND LIGHT WINDS. TEMPERATURES HAVE GENERALLY RECOVERED INTO THE LOWER 60S ACROSS THE AREA. HIGH PRESSURE WILL SLOWLY MOVE EASTWARD TO THE ATLANTIC COAST OVER THE NEXT FEW DAYS AS UPPER RIDGING BECOMES ESTABLISHED OVER THE WESTERN GULF.
Southerly flow will dominate through the middle of the week, keeping the warmer air flowing into the area with moisture eventually coming along with it.
A COLD FRONTAL SYSTEM MOVING INTO THE REGION WILL PRODUCE WINDY WEATHER THE NEXT TWO DAYS ALONG WITH LOW CHANCES FOR MOUNTAIN SHOWERS ON WETNESS.
The synoptic pattern late this afternoon features a trough aloft across the eastern seaboard, placing the Ohio Valley within weak northwest flow aloft. Surface ridging will slowly side east of the Ohio Valley, but will remain close enough to provide mainly sunny skies and dry weather. With the high shifting to the east, southerly surface winds will help keep temperatures above normal. Lows tomorrow night will be a bit warmer with an increased gradient wind, so temps will be in the middle 30s.
IT'S POSSIBLE TEMPS COULD DIP A FEW DEGREES COOLER THAN FORECAST LOWS THERE BETWEEN MIDNIGHT AND SUNRISE.
MODIFYING POLAR HIGH PRESSURE RIDGE EXTENDING FROM SOUTH TEXAS TO THE TENNESSEE VALLEY WILL ALLOW ONE MORE NIGHT WITH STARRY SKIES AND DECOUPLED WINDS. TEMPS WILL AVERAGE 10-12 DEGREES WARMER FOR WED MORNING EXPECTING UPPER 40S C LA TO UPPER 50S SE TX. WITH HIGHS IN THE LOWER 70S. EXPECT LOW TO BE ANOTHER 8-10 DEGREES WARMER WITH UPPER 50S C LA TO MID 60S SE TX & COASTAL SW LA. WITH THE LARGE UPPER LEVEL LOW ACROSS THE WEST SLOWLY MOVING EAST. DML HIGH PRESSURE WILL SETTLE OVER THE EASTERN U.
630 PM EST MON NOV 23 2015 CURRENT CONDITIONS ACROSS THE AREA FEATURE CLEAR SKIES AND TEMPERATURES IN THE LOW 40S. AS HIGH PRESSURE BUILDS INTO THE REGION OVERNIGHT. SKIES WILL REMAIN CLEAR ALLOWING FOR GOOD RADIATIONAL COOLING AND A RIDGE/VALLEY SPLIT. CURRENT CONDITIONS ACROSS THE AREA FEATURE CONTINUED DOMINANCE OF HIGH PRESSURE AND SUNNY SKIES. BUT THIS SHOULD NOT PROVIDE ANY SORT OF INSULATION FOR THE AREA AS THIS COLDER AND DRIER AIR MASS WILL ALLOW TEMPERATURESTO PLUNGE AGAIN TONIGHT INTO THE LOWER 20S. THE WINDS WILL BE RATHER LIGHT AS THE HIGH PUSHES OFF TO THE EAST AND THE GRADIENT WEAKENS QUITE A BIT. LOWS ON TUESDAY NIGHT WILL ONLY BE IN THE MID 20S FOR THE DEEPER VALLEYS AND AROUND 30 ON THE RIDGES.