Aikyam-Lab/Synoptic-Bench huggingface dataset:
635 AM EST SAT DEC 5 2015 HIGH PRESSURE CONTINUES TO HAVE HOLD ACROSS THE OHIO RIVER VALLEY REGION EARLY THIS MORNING. GIVEN THE BELOW FREEZING TEMPS ACROSS THE REGION CURRENTLY. ANY FOG THAT DOES FORM WILL BE IN THE FORM OF FREEZING FOG AND COULD LEAD TO SOME SLICK SPOTS ON THE AREA ROADWAYS AND SIDEWALKS. HIGHLIGHTING THE POTENTIAL FREEZING FOG THREAT AS WELL. HIGH PRESSURE WILL STAY IN CONTROL THROUGH THE DURATION OF THE SHORT TERM PERIOD AS IT SLOWLY SHIFTS EAST OF THE KENTUCKY BY SUNDAY. TO A MORE SOUTHERLY DIRECTION ON THE BACK SIDE OF THE HIGH BY SUNDAY. CONTINUED TO HIGHLIGHT THE VARIABILITY IN TEMPS DURING THE OVERNIGHT HOURS BETWEEN THE VALLEYS AND THE RIDGES. WITH SOME OF THE DEEPEST VALLEYS EXPECTING LOWS IN THE LOW 20S TONIGHT. WHILE THE RIDGES MAY REMAIN IN THE LOW 30S.
940 AM EST SAT DEC 5 2015 HIGH PRESSURE WILL EXTEND ACROSS THE AREA INTO SUNDAY.
ANOTHER SURGE OF HIGH PRESSURE IS EXPECTED TO BUILD ACROSS THE AREA OVERNIGHT INTO SUNDAY.
628 AM EST SAT DEC 5 2015 DRY HIGH PRESSURE WILL REMAIN ACROSS THE REGION THROUGH THE WEEKEND.
508 AM EST SAT DEC 5 2015 HIGH PRESSURE WILL REMAIN OVER PENNSYLVANIA THIS WEEKEND.
THERE IS A COLD FRONT IN THE NEBRASKA PANHANDLE AND EASTERN COLORADO THIS MORNING. THE CLOUDS AND SOME COOLER AIR MOVING INTO THE AREA WILL KEEP TEMPERATURES A FEW DEGREES COOLER TODAY. AN UPPER LEVEL TROUGH ALSO MOVES THROUGH THE AREA. WITH THE FRONT IN THE EASTERN PART OF THE FORECAST AREA THIS EVENING AND THE UPPER TROUGH MOVING THROUGH THERE IS A SMALL CHANCE FOR SOME SHOWERS THIS EVENING. THE UPPER LEVEL PATTERN ISN/T A RIDGE ALL WEEK. THE WEATHER PATTERN APPEARS TO BECOME COOLER WITH INCREASING CHANCES OF PRECIPITATION. A COLD FRONT WILL MOVE THROUGH THE TERMINALS AROUND SUNSET THIS EVENING.
HAVE MAINTAINED THE LOWER CHANCES SOUTHWEST WITH THE EXPECTATION THAT IT WOULD BE AFTER MIDNIGHT WEDNESDAY NIGHT THAT STORMS MOVE IN. THE PERTINENT FEATURE FOR THE NORTHERN PLAINS IS AN H500 TROUGH OVER THE SOUTHWEST US WHICH FORMS THE SOUTHERN EXTENT OF A SOMEWHAT FRACTURED REX BLOCK ACROSS WESTERN NORTH AMERICA.
AND UPPER RIDGING CONTINUE TO BUILD INTO THE REGION. MORNING SFC/UPPER AIR ANALYSIS INDICATES A FRONTAL BOUNDARY ALONG THE COAST WHILE THE REGION IS CAUGHT IN NW FLOW ALOFT BETWEEN THE UPPER LOW OVER ERN TN AND THE UPPER RIDGE BUILDING INTO SRN PLAINS AND TX. THE DRY WEATHER PATTERN CONTINUES IN THE NEAR TERM AS A SUBTROPICAL RIDGE AXIS PERSISTS AND STRENGTHENS OVER THE SOUTHERN PLAINS/OZARKS WHILE AN UPPER LEVEL LOW OVER THE SOUTH ATLANTIC STATES CONTINUES TO DRAW RELATIVELY DRY AIR SOUTHWARD INTO THE ARKLAMISS REGION. AND DIURNAL TEMPERATURE RANGES SHOULD INCREASE A BIT AS HIGHS GET WARMER WHILE LOWS DROP OFF WELL INTO THE 60S.
HIGH PRESSURE BUILDING INTO THE REGION WILL PROVIDE THE NORTH COUNTRY WITH DRY WEATHER AND MOSTLY CLEAR SKIES THROUGH THURSDAY.
1137 AM EDT WED JUN 3 2015 HIGH PRESSURE WILL BRING CLEARING SKIES TODAY, BEFORE ANOTHER FRONT MOVES ACROSS THE REGION ON THURSDAY WITH A CHANCE FOR A SHOWER OR A THUNDERSTORM. HIGH PRESSURE OVER NORTHERN NEW ENGLAND CONTINUES TO FILTER DRYER AIR IN FROM THE NORTHEAST. HIGH PRESSURE WILL KEEP THE WEATHER FAIR INTO EARLY THURSDAY, THOUGH MOISTURE WILL LINGER OVER THE SRN ZONES AND ADD TO THE CLOUD COVER. WILL DRIFT THROUGH THE CAROLINAS WHILE A WEAK TROF DIPS DOWN THROUGH LOWER ONTARIO.
1001 AM EDT WED JUN 3 2015 HIGH PRESSURE WILL RESIDE OVER THE NORTHEAST WITH LOW PRESSURE FORMING OFF THE NORTH CAROLINA COAST.
HIGH PRESSURE WILL PROVIDE DRY AND SEASONABLE CONDITIONS TODAY. PATCHES OF LOW CLOUDS CONTINUE TO MOVE WEST ACROSS CENTRAL INDIANA EARLY THIS MORNING THANKS IN PART TO AN UPPER LOW WELL OFF TO THE SOUTHEAST.
THIS FEATURE IS THEN EXPECTED TO FORM A CLOSED LOW OVER THE CENTRAL CA COAST ON THURSDAY.
Did not have a chance to look at temperatures for today, but increased cloud cover could keep them cooler than currently forecast.
THE FRONTAL BOUNDARY WHICH IS BACK ACROSS NORTHERN SOUTH DAKOTA EXTENDING FROM LOW PRESSURE IN SOUTHEAST NORTH DAKOTA IS EXPECTED TO MAKE STEADY PACE SOUTHEAST. AND RATHER SEE THAT SLIGHT RIDGING BEHIND MORNING SYSTEM DURING THE DAY WILL BE MORE THAN ENOUGH TO LIMIT CONVECTION IN A ENVIRONMENT OF LESSER INSTABILITY. OUTSIDE CHANCE FOR AN ISOLATED SEVERE STORM WITH HAIL/WIND THROUGH THE LOWER MISSOURI VALLEY. THE CHANCE FOR THUNDERSTORMS WILL MOVE INTO THE AREA AGAIN THURSDAY AFTERNOON AND NIGHT AS LOW PRESSURE ALOFT MOVES INTO THE AREA.
1011 AM CDT WED JUN 3 2015 TEMPS WILL BE COOL TODAY WITH CLOUDS AND COOL ADVECTION IN THE LOW LEVELS. AS WILL THE TRAILING COLD FRONT. AND MAY NEED TO LOWER MAX TEMPS IN SOME PLACES ONCE THE EXACT SPEED TO THE COLD FRONT BECOMES MORE CLEAR. HIGH PRESSURE ALONG WITH A DRY/COOL AIRMASS WILL BE IN PLACE.
HRRR/RAP HAVE TRENDED TOWARD THE LOWER RESOLUTION OPERATIONAL RUNS WITH THE HANDLING OF THESE SYNOPTIC FEATURES. AS WILL THE TRAILING COLD FRONT. AND MAY NEED TO LOWER MAX TEMPS IN SOME PLACES ONCE THE EXACT SPEED TO THE COLD FRONT BECOMES MORE CLEAR. HIGH PRESSURE ALONG WITH A DRY/COOL AIRMASS WILL BE IN PLACE.
/ISSUED 357 AM CDT WED JUN 3 2015/ A FAIRLY PERSISTENT FCST PATTERN HAS SET UP WITH UPPER RIDGE ANCHORED OVER SOUTHERN PLAINS. AND WEAK CLOSED LOW OVER TN VALLEY. AS NW FLOW BECOMES MORE ORGANISED AROUND PERIPHERY OF UPPER RIDGE.
IN THE LOW TO MID LEVELS OF THE ATMOSPHERE. A TROUGH OF LOW PRESSURE WILL BE CENTERED OVER THE NORTHWEST CARIBBEAN SEA THIS AFTERNOON. A TROUGH OF LOW PRESSURE WILL PROGRESS EASTWARD ACROSS THE EASTERN GULF OF MEXICO TODAY.
HIGHS ALONG THE SHORELINE OF LAKE MICHIGAN WILL BE SLIGHTLY COOLER. HIGH PRESSURE WILL BRING YET ANOTHER DRY AND QUIET DAY. CIRRUS WILL STREAM IN FROM TIME TO TIME BUT SHOULD HAVE LITTLE IMPACT ON CONTINUATION OF WARMER TEMPERATURES WITH HIGHS FINALLY BACK CLOSE TO NORMAL. BTWN TX BASED MID TROPOSPHERIC RIDGE FIRMLY ASSERTED INTO SWRN GRTLKS THROUGH THU.
The smattering of convection appears as though it will stick around for a bit as the low level jet veers and maintains weak convergence. A warmer day is on tap for the region. Upper ridging will dominate our weather regime with nighttime and early morning clusters of storms riding to the ridge to the southeast and affect portions of central Missouri and the eastern Ozarks.
THURSDAY WILL BE WARMER AGAIN WITH HIGHS AROUND 80 DEGREES.
MODELS SUGGEST THE PERIPHERY OF CONVECTION WILL REMAIN UNSTABLE SO THERE MAY BE EXPANSION DUE TO DAYTIME HEATING BEFORE THE FAVORABLE ENVIRONMENT MOVES EAST AND CANADIAN HIGH PRESSURE BUILDS OVERHEAD. THIS HIGH WILL KEEP US DRY FOR MOST OF TODAY/TONIGHT/EARLY THURSDAY. WHILE UPPER RIDGING IN SOUTHWEST FLOW WILL DOMINATE UPPER LEVEL CONDITIONS. THE PERIOD OPENS WITH UPPER RIDGING OVER THE PLAINS BEGINNING TO FLATTEN AS AN UPPER TROUGH OVER NEVADA EJECTS ENERGY INTO THE HIGH PLAINS AND DAKOTAS. AT THE SFC DRIER AIR UNDER HIGH PRESSURE WILL GIVE WAY TO A TROUGH MOVING OFF THE ROCKIES.
WATER VAPOR IMAGES INDICATE UPPER LEVEL LOW OVER EASTERN TENNESSEE AT 07Z FORECAST TO MOVE SOUTHEAST OVER SOUTH CAROLINA BY THIS EVENING. STRONG SYNOPTIC LIFT EXPECTED THIS AFTERNOON ASSOCIATED WITH SHORT WAVE TROUGHS ROTATING AROUND LOW.
CLOSED UPPER LEVEL LOW OVER THE SOUTHERN APPALACHIANS THIS MORNING WILL SHIFT SLIGHTLY TO THE EAST SOUTHEAST TODAY AND MOVE ACROSS NORTHERN GEORGIA AND INTO THE CAROLINAS TONIGHT. THE UPPER LOW BEGINS TO FILL AS IT SHIFTS ACROSS THE CAROLINAS.
ANOTHER LOW PRESSURE SYSTEM WILL AFFECT THE REGION THROUGH THE REMAINDER OF THE WEEK BRINGING AN INCREASE IN CLOUDS AND MAINLY MOUNTAIN SHOWERS AND THUNDERSTORMS. CLOUDS MOVING ACROSS NORCAL OVERNIGHT AHEAD OF SHORT- WAVE TROUGH PRESENTLY MOVING ONTO THE COAST.
/ISSUED 416 AM CDT WED JUN 3 2015/ EARLY THIS MORNING SE TEXAS WAS BETWEEN AN UPPER LEVEL RIDGE BUILDING OVER NORTHERN MEXICO. AND AN UPPER LEVEL TROUGH OVER THE EASTERN GULF OF MEXICO.
AN UPPER LEVEL LOW WILL BRING A SLIGHT POSSIBILITY OF SHOWERS THIS WEEKEND. WITH WARMEST INLAND LOCATIONS WARMING TO THE LOWER 80S. AN UPPER LEVEL TROUGH IS PROGGED TO DEEPEN ALONG THE WEST COAST BY THIS EVENING. AND AN UPPER LOW IS FORECAST TO FORM OVER THE BAY AREA BY THURSDAY. COOLER TEMPERATURES AND STRONGER WEST WINDS. THE LOW IS FORECAST TO SKIRT THE COAST TO THE SOUTH THROUGH THE REMAINDER OF THE WEEK.
956 AM EDT WED JUN 3 2015 HIGH PRESSURE BUILDS TODAY AND THURSDAY.
702 AM EDT WED JUN 3 2015 HIGH PRESSURE BUILDS TODAY AND THURSDAY.
A LITTLE WARMER TODAY IN MOST PLACES AS HIGH TEMPERATURES SOAR 3 TO 12 DEGREES ABOVE NORMAL.
TEMPERATURES AT THE SURFACE WERE IN THE LOWER 70S WITH SOME COOLING STILL LEFT OVER THE NEXT FEW HOURS. NOT MUCH CHANGE IS FORECAST OVER THE INLAND AREAS THROUGH THE REMAINDER OF THE WEEK AS MOISTURE IS LIMITED AND HIGH PRESSURE ALOFT REMAINS THE DRIVING FORCE BEHIND OUR WEATHER.
721 AM EDT WED JUN 3 2015 HIGH PRESSURE SLIDING OFF THE NEW ENGLAND COAST WILL BRING THE RETURN OF LIGHT SOUTHERLY FLOW ACROSS WESTERN AND NORTH CENTRAL NEW YORK OVER THE NEXT FEW DAYS.
THE 00Z/03 RUN IS CONTINUING TO ADVERTISE THAT THE HIGHEST RAIN AMOUNTS WILL BE FOUND ALONG THE NEB/KS BORDER.
STRONG HIGH PRESSURE ALOFT WILL CONTINUE THE ABOVE AVERAGE TEMPERATURES THROUGH AT LEAST MID WEEK.
1236 PM EDT WED JUN 3 2015 UNSETTLED CONDITIONS WILL PERSIST THROUGH THE END OF THE WEEK AS A STALLED FRONT AND UPPER LOW LINGER OVER THE REGION. RAIN CHANCES WILL CONTINUE OVER THE WEEKEND AS A WEAK COLD FRONT DROPS IN FROM THE NORTH.
AS RIDGING OVER TEXAS STAYS IN CONTROL. WITH HIGH PRESSURE OVER THE NORTHWEST GULF. SUPPORTING THE CONCEPT OF MID LEVEL RIDGING BUILDING OVER THE AREA.
AN UPPER LOW WILL DRIFT EAST OVER THE CENTRAL CAROLINAS WHILE A DIFFUSE COLD FRONT AT THE SURFACE EDGES SOUTHEAST TO NEAR THE COAST. MID LEVEL LOW PRESSURE WILL SLOWLY MEANDER WEST TO EAST ACROSS NORTH CAROLINA THROUGH THE PERIOD.
/ISSUED 235 AM CDT WED JUN 3 2015/ LOW CLOUDS ASSOCIATED WITH AN UPPER LEVEL LOW PRESSURE SYSTEM REMAIN OVER PORTIONS OF WEST TENNESSEE IN AREAS MAINLY NEAR THE TENNESSEE RIVER THIS MORNING. THE UPPER LOW IS NOW LOCATED OVER EAST TENNESSEE. THE MIDSOUTH WILL REMAIN STUCK BETWEEN THE BROAD UPPER TROF IN THE EASTERN UNITED STATES AND THE UPPER RIDGE OVER TEXAS.
BROAD TROUGH OVER THE WEST COAST CONTINUES TO PUT THE REGION IN SOUTHWEST FLOW. AND SECONDARY COLD FRONT IS PASSING THROUGH THE CWA.
1126 AM CDT WED JUN 3 2015 UPPER RIDGE CONTINUES TO INCREASE ITS INFLUENCE ON THE REGION. /ISSUED 357 AM CDT WED JUN 3 2015/ A FAIRLY PERSISTENT FCST PATTERN HAS SET UP WITH UPPER RIDGE ANCHORED OVER SOUTHERN PLAINS. AND WEAK CLOSED LOW OVER TN VALLEY. AS NW FLOW BECOMES MORE ORGANIZED AROUND PERIPHERY OF UPPER RIDGE.
LOOKS LIKE SUBSIDENCE IS FINALLY ERODING THE LOW CLOUDS ACROSS THE AREA. HIGH PRESSURE ALOFT WILL BUILD OVER THE REGION THROUGH THE END OF THE WORK WEEK.
SOUTHEAST WINDS ARE BEGINNING TO DEVELOP IN THE WAKE OF THE RIDGE AXIS, WHICH MAY WORK TO PULL THE MOISTURE LADEN AIR IN SE IL TOWARD CENTRAL IL. THE REST OF THE DAY WILL FOCUS ON AN MCS IN THE PLAINS ROLLING OVER THE UPPER RIDGE TOWARD EASTERN MISSOURI. THE WARMER HIGH TEMPS WILL BE LOCATED IN OUR SW COUNTIES, WEST OF LINCOLN TO SPRINGFIELD, WHERE SOUTHWEST FLOW AND WARMING WILL INCREASE THE SOONEST. DRY WEATHER WILL ATTEMPT TO HOLD ON INTO THURSDAY WITH UPSTREAM RIDGING HOLDING FAIRLY STRONG, BUT GRADUAL WEAKENING OF THE RIDGE WILL ALLOW PERIODIC STORM COMPLEXES TO DRAW CLOSER BEFORE DISSIPATING.
700 AM CDT WED JUN 3 2015 FOR 12Z TAFS /ISSUED 302 AM CDT WED JUN 3 2015/ THE PREVIOUSLY ADVERTISED UPPER LOW HAS PROGRESSED SOUTHWARD. WITH THE CENTER OF THE LOW OVER NORTHWEST GEORGIA. CLOUDS HAVE BEGUN TO STREAM SOUTHWARD ON THE WESTERN PERIPHERY OF THE LOW. WITH TEMPS STILL IN THE LOW TO MID 60S. THIS COULD HELP WITH FOG DEVELOPMENT GIVEN THE LOWERED DEWPOINTS AND INCREASED DEWPOINT DEPRESSIONS. THE UPPER LOW IS EXPECTED TO CONTINUE TO MOVE TO THE E/SE OVER THE NEXT FEW DAYS. WHILE THE UPPER LEVEL RIDGE BUILDS IN ACROSS THE WEST. THE UPPER RIDGE WILL CONTINUE TO PUSH EASTWARD THROUGH THE WEEKEND. AS THE UPPER LOW MOVES ALONG THE EASTERN COAST.
1121 AM CDT WED JUN 3 2015 UPPER LOW IS SITUATED OVER EAST TN THIS MORNING WITH UPPER RIDGING BUILDING INTO THE SOUTHERN PLAINS. /ISSUED 235 AM CDT WED JUN 3 2015/ LOW CLOUDS ASSOCIATED WITH AN UPPER LEVEL LOW PRESSURE SYSTEM REMAIN OVER PORTIONS OF WEST TENNESSEE IN AREAS MAINLY NEAR THE TENNESSEE RIVER THIS MORNING. THE UPPER LOW IS NOW LOCATED OVER EAST TENNESSEE. THE MIDSOUTH WILL REMAIN STUCK BETWEEN THE BROAD UPPER TROF IN THE EASTERN UNITED STATES AND THE UPPER RIDGE OVER TEXAS.
00Z GFS/NAM/ECMWF SUGGEST REDEVELOPMENT WITH MCV/ALONG WEAK SURFACE COLD FRONT BY 18Z TIME FRAME AND FOCUS OVER WESTERN PART OF THE FORECAST AREA. AS THE WEAK COLD FRONT/MCV TRACKS ACROSS THE FORECAST AREA. HAVE CONCENTRATED THE HIGHER CHANCES OF SHOWERS/THUNDERSTORMS ACROSS THE FAR NORTH AND SOUTHERN PARTS OF THE FORECAST AREA.
AN UPPER TROUGH DEEPENS ALONG THE WEST COAST TONIGHT.
UPPER LOW WILL MOVE SLOWLY EAST ACROSS THE SOUTHERN APPALACHIANS.
A WEAK LOW PRESSURE SYSTEM ALOFT WILL REMAIN OVER THE AREA TODAY FOR SCATTERED SHOWERS. LOOK FOR HIGH PRESSURE ALOFT TO BEGIN BUILDING OVER THE REGION ON THURSDAY.
MOST GUIDANCE DOES BREAKUP CLOUD COVER LATER TODAY WITH A MUCH WARMER DAY EXPECTED THAN YESTERDAY.
HIGH PRESSURE IS CENTERED OVER SOUTH CENTRAL CANADA. UPPER LEVEL ANALYSIS CONTINUES TO SHOW WEAK RIDGING OVER THE PLAINS. WITH LONG WAVE TROF ALONG THE WEST COAST. BUT BASICALLY LEFT POPS AS IS FOR THE AFTERNOON AS SHOWERS AND THUNDERSTORMS DEVELOP OVER THE THE BLACK HILLS AND THE HIGHER TERRAIN TO THE SOUTH AND WEST. BROAD TROUGH OVER THE WEST COAST CONTINUES TO PUT THE REGION IN SOUTHWEST FLOW. AND SECONDARY COLD FRONT IS PASSING THROUGH THE CWA.
900 AM PDT WED JUN 3 2015 BELOW NORMAL TEMPERATURES AND BREEZY WINDS IN THE MOUNTAINS AND DESERTS WILL CONTINUE THROUGH THIS WEEKEND AS A LARGE UPPER-LEVEL LOW PRESSURE APPROACHES THE REGION.
MEANWHILE, MOIST SOUTHWEST FLOW WILL COMBINE WITH A WEAK UPPER-LEVEL TROUGH TO INITIATE ANOTHER ROUND OF SCATTERED SHOWERS AND THUNDERSTORMS THAT WILL FORM AT/NEAR ALL LOCAL TAF SITES AFTER 18Z. GIVEN THE SLOW PROGRESS OF THE TROUGH, CONVECTIVE ACTIVITY WILL LIKELY CONTINUE INTO THE NIGHTTIME HOURS FOR KHVR/KLWT.
910 AM EDT WED JUN 3 2015 HIGH PRESSURE OVER THE EASTERN GREAT LAKES WILL DRIFT EAST AND MOVE OFF THE NEW ENGLAND COAST BY THURSDAY.
1035 AM EDT WED JUN 3 2015 A FEW SHOWERS MAY DEVELOP THIS AFTERNOON IN THE CIRCULATION AROUND AN UPPER LOW CENTERED OVER THE SOUTHERN APPALACHIANS.
THE UPPER LOW IS NOW CENTERED OVER THE SOUTHERN APPALACHIANS NEAR THE TN/NC BORDER. WATER VAPOR IMAGERY INDICATES THAT QUITE A BIT OF MID/UPPER LEVEL DRY AIR HAS ROTATED INTO THE AREA ON THE SOUTH SIDE OF THIS LOW. THE POSITION OF THE UPPER TROUGH PUTS US IN A DNVA SCENARIO TODAY, SO THERE WILL BE LESS QG FORCING TO AID ASCENT.
AS IT CONTINUES TO ROLL EAST-SOUTHEASTWARD ALONG LOW-MID LEVEL THETAE GRADIENT THAT IS SKIRTING PERIPHERY OF H5 RIDGE AXIS. NOT EXPECTING ANY SOUTH-SOUTHWESTWARD DEVELOPMENT INTO CWA THIS MORNING GIVEN STOUT 12-16C H7 THERMAL RIDGE ORIENTED FROM EAST CENTRAL COLORADO INTO NORTH CENTRAL KANSAS. PRONOUNCED H8 THERMAL RIDGE WILL BE IN PLACE ACROSS KANSAS FOR TODAY.
1101 AM EDT WED JUN 3 2015 HIGH PRESSURE SLIDING OFF THE NEW ENGLAND COAST WILL BRING THE RETURN OF LIGHT SOUTHERLY FLOW ACROSS WESTERN AND NORTH CENTRAL NEW YORK OVER THE NEXT FEW DAYS.
UPPER LEVEL RIDGE WILL BE THE MAIN WEATHER FEATURE DURING THE SHORT TERM. HIGHS TODAY WILL GENERALLY BE IN THE LOWER 90S OUT WEST TO UPPER 80S MOST EVERYWHERE ELSE. WITH UPPER RIDGE NEARBY.
MID/UPPER LEVEL LOW DRIFTS BY TO THE SOUTH THIS WEEK. A COLD FRONT MOVES THROUGH THIS WEEKEND. WITH UPSLOPE FLOW AS AN UPPER LOW MEANDERS BY TO THE SOUTH. AND HAVE A RATHER BROAD AREA OF CHANCE POPS ACROSS THE LOWLANDS TO ALLOW FOR SOME UNCERTAINTY IN EXACT LOCATION. WITH THE UPPER LOW IN THE AREA. HANG ONTO SOME POPS ACROSS THE HIGHER TERRAIN TONIGHT. WITH DRIER WEATHER FOR THE LOWLANDS AND OHIO RIVER VALLEY.
OLD CDFNT WAS WELL TO OUR SOUTH WHILE THE UPPER LOW CONTINUES TO SPIN OVER ERN TN. CIG CONDS AT HSV/MSL REMAIN IN THE LOW-VFR RANGE /3500-5000 FT/ BUT WILL INCLUDE TEMPO GROUPS THRU 03/14Z FOR MVFR VSBY AT HSV AND IFR CIG AT MSL.
611 AM CDT WED JUN 3 2015 12Z TAF CYCLE AN UPPER RIDGE WILL KEEP VFR CONDITIONS AT ALL THREE TAF SITES THROUGH 12Z THURSDAY. /ISSUED 425 AM CDT WED JUN 3 2015/ THE CURRENT WEATHER PATTERN CONTINUES TO BE DOMINATED BY AN AMPLIFYING UPPER-LEVEL RIDGE EXTENDING FROM NORTHERN MEXICO INTO THE NORTHERN HIGH PLAINS. WITH DEEPENING UPPER LOWS OVER THE WEST AND EAST COASTS. DRY AND WARM SOUTHERLY LOW-LEVEL WINDS AND THE THERMAL RIDGE WILL PUSH AFTERNOON HIGH TEMPS INTO THE UPPER 80S/LOW 90S INTO THE WEEKEND FOR THE PANHANDLES. AS MODELS CURRENTLY SUGGEST A WEAKENING OF THE RIDGE IN ADVANCE OF HURRICANE BLANCA.
1243 PM EDT WED JUN 3 2015 HIGH PRESSURE BUILDS TODAY AND THURSDAY.
DUE TO PRESENCE OF UPPER LOW OVER EXTREME SE TN/SW NC. CHATTANOOGA AIRPORT, TN 82 63 85 65 / 30 20 20 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 80 62 82 64 / 40 20 30 10 OAK RIDGE, TN 81 62 83 63 / 40 20 30 10 TRI CITIES AIRPORT, TN 77 59 80 60 / 50 30 50 20.
LATEST RAP ANALYSIS SHOWS VORT LOBE ACROSS OUR NORTHERN AREAS WHICH WAS ROTATING AROUND CUT-OFF UPPER LOW OVER TN/GA. THE OVERALL LOW LEVEL PATTERN HAS QUITE LIGHT WINDS AS WESTERN END OF ATLANTIC RIDGE WAS SEAWARD OF THE AREA AND A WEAK LOW LEVEL TROUGH EXTENDED FROM THE YUCATAN TO SOUTH FLORIDA. WILL LEAVE LIKELY POPS IN SOUTHERN AREAS DUE TO THE HIGHER MOISTURE AND WEAK LOW LEVEL TROUGH/CONVERGENCE.
741 AM EDT WED JUN 3 2015 HIGH PRESSURE OVER THE EASTERN GREAT LAKES WILL DRIFT EAST AND MOVE OFF THE NEW ENGLAND COAST BY THURSDAY.
AN EXPANSIVE LOW CLOUD DECK AS MOVED INTO THE WESTERN HALF OF THE CWA BEHIND THE PASSAGE OF A COLD FRONT. MODELS SUGGEST THE PERIPHERY OF CONVECTION WILL REMAIN UNSTABLE SO THERE MAY BE EXPANSION DUE TO DAYTIME HEATING BEFORE THE FAVORABLE ENVIRONMENT MOVES EAST AND CANADIAN HIGH PRESSURE BUILDS OVERHEAD. THIS HIGH WILL KEEP US DRY FOR MOST OF TODAY/TONIGHT/EARLY THURSDAY. WHILE UPPER RIDGING IN SOUTHWEST FLOW WILL DOMINATE UPPER LEVEL CONDITIONS. THE PERIOD OPENS WITH UPPER RIDGING OVER THE PLAINS BEGINNING TO FLATTEN AS AN UPPER TROUGH OVER NEVADA EJECTS ENERGY INTO THE HIGH PLAINS AND DAKOTAS. AT THE SFC DRIER AIR UNDER HIGH PRESSURE WILL GIVE WAY TO A TROUGH MOVING OFF THE ROCKIES.
THE BASE OF THE LONG WAVE TROUGH REMAINS CENTERED OVER THE FLORIDA PENINSULA FOR THE NEXT DAY. AS THIS TROUGH MOVES EASTWARD DRY AIR IN THE MID/UPPER LEVELS WILL CONTINUE TO FILTER INTO THE AREA. WE STILL HAVE A CHANCE OF SCATTERED SHOWERS AND STORMS THIS AFTERNOON WITH THE HIGHEST CHANCES BEING OVER SOUTHERN FLORIDA.
1158 AM EDT WED JUN 3 2015 HIGH PRESSURE WILL BUILD IN BRIEFLY FROM THE NORTH TODAY BRINGING DRIER CONDITIONS.
LOW PRES WAS CNTRD OVER THE TN/NC BORDER WITH RIDGING OVER NM/WRN TX. THE BUILDING RIDGE ALOFT AND RELATIVELY DRY ATMOSPHERE SHOULD KEEP CONVECTIVE DEVELOPMENT AT BAY TODAY. TEMPERATURES AT THE SURFACE WERE IN THE LOWER 70S WITH SOME COOLING STILL LEFT OVER THE NEXT FEW HOURS. NOT MUCH CHANGE IS FORECAST OVER THE INLAND AREAS THROUGH THE REMAINDER OF THE WEEK AS MOISTURE IS LIMITED AND HIGH PRESSURE ALOFT REMAINS THE DRIVING FORCE BEHIND OUR WEATHER.
UPPER LEVEL RIDGING DOMINATES SOUTH CENTRAL TEXAS WITH CIRRUS PUSHING FROM THE NORTHWEST TO THE SOUTHEAST EARLY THIS MORNING. A HIGH PRESSURE SYSTEM ACROSS THE GULF OF MEXICO IS PRODUCING SOUTHERLY WINDS ACROSS SOUTH CENTRAL TEXAS. THIS PATTERN WILL PERSIST TODAY WITH HIGHS IN THE UPPER 80S TO THE LOWER 90S. SIMILAR WEATHER CONDITIONS ARE IN STORE FOR THURSDAY WITH OVERALL HIGH TEMPERATURES A DEGREE OR TWO WARMER THAN TODAY AS MOISTURE INCREASES.
A CUTOFF CYCLONE IS SPINNING OVER THE SOUTHERN APPALACHIANS. SHOWERS AND THUNDERSTORMS WILL LIKELY IMPACT THE GEORGIA COASTAL WATERS THROUGH THE EVENING HOURS AS A COLD FRONT APPROACHES FROM THE NORTHWEST.
950 AM PST WED NOV 25 2015 A COLD LOW PRESSURE SYSTEM WILL BRING BELOW NORMAL TEMPERATURES AND LOCALLY BREEZY WINDS TO THE REGION TODAY.
356 PM CST WED NOV 25 2015 A SLOW MOVING COLD FRONT WILL APPROACH THE FOUR STATE AREA FROM THE WEST THURSDAY EVENING.
HAVE BUMPED UP TODAY'S MAX TEMPERATURES FOR TODAY ONLY A COUPLE OF DEGREES WITH LOW LEVEL FLOW SHIFTING TO OVERALL MILDER FLOW AND SURFACE RIDGING SLOWLY WEAKENS.
104 PM EST WED NOV 25 2015 VARIABLE CLOUD COVER WILL ERODE TODAY AS HIGH PRESSURE BUILDS ACROSS AND EAST OF THE REGION.
AT THE SURFACE AND IN THE LOWER TO MID LEVELS. THE FLORIDA KEYS REMAIN ALONG THE SOUTHERN PERIPHERY OF THIS EXCEPTIONALLY STRONG ANTICYCLONE.
303 PM CST WED NOV 25 2015 WARMER PRE-THANKSGIVING WEATHER PREVAILED AROUND THE GREATER TENNESSEE VALLEY THIS AFTERNOON. WITH HIGH TEMPERATURES SO FAR WARMING INTO THE LOW/MID 60S. IT IS FORECAST TO PLUNGE SOUTHWARD ACROSS THE HIGH PLAINS REGION.
A COLD FRONT WILL PUSH THROUGH THE CWA. AN UPPER LEVEL TROUGH OF LOW PRESSURE CURRENTLY OVER NORTHERN CALIFORNIA WILL EVENTUALLY SPREAD LIGHT SNOW INTO THIS CWA LATER TONIGHT AND THROUGH THE DAY ON THURSDAY. WITH A HIGH PRESSURE OVER THE REGION THURSDAY NIGHT.
442 PM EST WED NOV 25 2015 STRONG HIGH PRESSURE OVER THE REGION WILL SLOWLY MOVE EAST OF THE AREA THROUGH THANKSGIVING DAY.
1103 AM CST WED NOV 25 2015 High pressure sliding off to the east while the next storm system spins up over the southern Plains. The CWA is in between the high pressure to the east and the developing weather system in the plains. In this position, breezy southerly winds and warmer temperatures are to be expected today.
UPPER LOW OVER NORTHERN NEVADA SLOWLY MOVING SOUTHEAST AWAY FROM THE FORECAST AREA TODAY. FURTHER NORTH INTO THE WASHINGTON COLUMBIA BASIN AND YAKIMA VALLEY SKIES WILL REMAIN MOSTLY SUNNY THROUGH THE DAY AS UPPER RIDGE BUILDS IN.
NW GULF COAST REGION PROGGED TO REMAIN ON THE WRN PERIPHERY OF LOW TO MID LEVEL RIDGE EXTENDING SW FROM THE MID ATLANTIC STATES. RIDGING ALOFT IS FCST TO BUILD DOWNSTREAM OF A WRN CONUS TROF. WHICH IS EXPECTED TO CUT OFF INTO AN UPPER LOW OVER NV BY WEEKS END. THE FETCH OF MOIST LOW LEVEL AIR ATOP RELATIVELY COOLER SHELF WATERS RAISES THE POTENTIAL FOR SEA FOG FORMATION OVER THE NEARSHORE WATERS AND COASTAL LAKES/BAYS. RIDGE TO THE EAST IS FCST TO BREAK DOWN BY THE WEEKEND.
THIS EVENING THROUGH THURSDAY NIGHT UPPER LEVEL ANALYSIS HAS LARGE POSITIVELY TILTED TROF ACROSS THE WESTERN CONUS WITH STRONG CLOSED LOW OVER NEVADA. ARCTIC HIGH PRESSURE HAS SETTLED INTO THE NORTHERN GREAT PLAINS. VIGOROUS CLOSED UPPER LOW WILL MOVE INTO WESTERN UTAH BY 12Z THURSDAY AND THEN STALL OUT OR DRIFT TO THE WEST.
THE PLEASANT WEATHER WILL CARRY OVER INTO THANKSGIVING DAY AS SOUTHERLY WINDS AND HIGH PRESSURE INFLUENCES KEEP US DRY AND SEASONABLY WARM.
A FEW RESIDUAL SHOWERS WILL BE POSSIBLE THROUGH THE MORNING AS AN UPPER LEVEL LOW PUSHES INLAND TO OUR NORTHEAST. ALONG WITH CONTINUE COOLER THAN AVERAGE TEMPERATURES THAT WILL PERSIST THROUGH THE UPCOMING WEEKEND. THE UPPER LEVEL LOW THAT BROUGHT SHOWERS TO THE AREA HAS MOVED TO THE EAST AND IS NOW LOCATED OVER EASTERN NEVADA. HOWEVER SATELLITE IMAGERY SHOWS CUMULUS CLOUDS OVER THE HIGHER PEAKS FROM SAN MATEO COUNTY SOUTH.
HAVE BUMPED UP TODAY'S MAX TEMPERATURES FOR TODAY ONLY A COUPLE OF DEGREES WITH LOW LEVEL FLOW SHIFTING TO OVERALL MILDER FLOW AND SURFACE RIDGING SLOWLY WEAKENS. VFR CONDITIONS EXPECTED FOR THIS AFTERNOON INTO THIS EVENING WITH BREEZY CONDITIONS AT TIMES AS RIDGE WEAKENS AND FLOW TURNS ON THE BACK SIDE OF THE RIDGE.
256 PM EST WED NOV 25 2015 MID AND UPPER LEVEL RIDGING OVER THE SOUTHEAST UNITED STATES AND SURFACE RIDGING EXTENDING FROM THE NORTHEAST U. WITH THE LOW DEWPOINTS EXPECT ANOTHER SIGNIFICANT COOL DOWN IN THE VALLEYS TONIGHT. WITH OVERNIGHT LOWS RANGING FROM THE UPPER 20S IN SOME OF THE COOLER VALLEY LOCATIONS TO THE LOWER 40S ON THE RIDGES. STILL EXPECT A SIGNIFICANT DIFFERENCE FROM RIDGES TO VALLEYS IN THE EAST THURSDAY NIGHT WITH LOWS FROM THE UPPER 30S VALLEYS TO UPPER 40S RIDGES. SOUTHEAST RIDGING WILL DOMINATE THE PATTERN FOR KENTUCKY THROUGH THE END OF THE WEEK.