Aikyam-Lab/Synoptic-Bench huggingface dataset:
1016 PM EDT SUN OCT 11 2015 HIGH PRESSURE OFF THE COAST OF NEW ENGLAND WILL CONTINUE TO PROVIDE THE NORTH COUNTRY WITH DRY CONDITIONS THROUGH COLUMBUS DAY.
925 PM EDT SUN OCT 11 2015 LOW PRESSURE WILL LINGER OFF THE SOUTHEAST COAST INTO MONDAY MORNING BEFORE MOVING TO THE NORTHEAST.
The concomitant surface cold front was sliding southeast across Nebraska this evening and will enter our area around sunrise Monday. The low level moist axis lies over the region. but that should level off over even abate later tonight as the pre-frontal trough approaches. Cold front will move through the area Monday morning with breezy north winds developing behind it.
Behind the front, temperatures will be cooler Monday with highs in the 70s.
/ISSUED 916 PM CDT SUN OCT 11 2015/ QUIET WEATHER PATTERN THROUGH THE OVERNIGHT HOURS AS HIGH PRESSURE REMAINS IN CONTROL. TEMPERATURES TRENDING TOWARD THE NORM IN THE LOW TO MID 80S. BEGINNING TO SEE A WEAK SOUTHERLY FLOW RETURN OVER THE WESTERN PORTION OF THE REGION WITH SURFACE RIDGING ADVANCING EAST ACROSS THE AREA.
746 PM EDT SUN OCT 11 2015 LOW PRESSURE MEANDERS OFF THE MID ATLANTIC COAST. AS HIGH PRESSURE BUILDS ACROSS THE NORTHERN MID ATLANTIC STATES THROUGH MONDAY NIGHT.
858 PM EDT SUN OCT 11 2015 HIGH PRESSURE WILL REMAIN IN CONTROL THROUGH MONDAY.
WINDS HAVE DECREASED BELOW HIGH WIND THRESHOLDS WITH NORTH TO NORTHWEST WIND EXPECTED TO CONTINUE TO DECREASE BEHIND THE COLD FRONT THROUGH THE EARLY EVENING. TONIGHT THROUGH MONDAY COLDER AIR WILL MOVE IN BEHIND THE DRY COLD FRONT THAT IS PASSING OVER THE AREA THIS AFTERNOON AND EVENING. TEMPERATURES WILL BE 10 TO 15 DEGREES COOLER TONIGHT.
GUIDANCE SEEMS SLIGHTLY WARMER AS SOME WINDS WILL BE POSSIBLE IN THE W AS BETTER PRESSURE GRADIENT KEEPS WINDS UP SLIGHTLY OVERNIGHT. WINDS WILL BE OUT OF THE SOUTH-SOUTHWEST BETWEEN 7-12 KNOTS ON MONDAY AHEAD OF A COLD FRONT THAT WILL MOVE THROUGH THE REGION ON MONDAY EVENING. /ISSUED 422 PM CDT SUN OCT 11 2015/ PRIMARY CONCERNS IN THIS FORECAST WILL BE STORM POTENTIAL WITH THE COLD FRONTAL PASSAGE LATE MONDAY AFTERNOON INTO MONDAY EVENING. WE WILL HAVE ANOTHER QUIET NIGHT WITH HIGH PRESSURE BEGINNING TO SHIFT EAST. HAVE OPTED TO FOLLOWER COOLER GUIDANCE SOUTHEAST OF THE DELTA REGION AND ADDED PATCHY FOG WHERE MIXING WILL NOT INCREASE UNTIL LATE TONIGHT OR EARLY MONDAY. WELL AHEAD OF AN APPROACHING COLD FRONT.
HIGH PRESSURE ALOFT WILL CONTINUE TO BRING HOT DRY WEATHER THROUGH MONDAY.
HIGH PRESSURE WILL BE OVER THE AREA TONIGHT WITH LIGHT WINDS AND CLEAR SKIES. AND BKN MID LEVEL CLOUDS WILL DEVELOP AS A COLD FRONT APPROACHES. /ISSUED 247 PM CDT SUN OCT 11 2015/ WE'RE SEEING PLEASANT CONDITIONS ACROSS THE MID-STATE THIS AFTERNOON THANKS TO AN AREA OF HIGH PRESSURE OVER THE TENNESSEE VALLEY. MONDAY WILL SEE SIMILAR CONDITIONS WITH SLIGHTLY WARMER TEMPS. BY MONDAY EVENING PRECIP CHANCES WILL BEGIN TO INCREASE AS THE AXIS OF A STRENGTHENING UPPER THROUGH SWINGS ACROSS THE GREAT LAKES REGION AND SWEEPS A COLD FRONT THROUGH THE TN VALLEY.
636 PM CDT SUN OCT 11 2015 High pressure slides off to the southeast this afternoon as another developing storm system moves across the southern tier of Canada. will be similarly quiet with warmer southwesterly winds and clear skies. Tomorrow morning, the sfc trof associated with the storm system to the west should move into the region and bring with it a significant wind shift to more northwesterly.
Cold front will move through the area Monday morning with breezy north winds developing behind it. The concomitant surface cold front was sliding southeast across Nebraska this evening and will enter our area around sunrise Monday. The low level moist axis lies over the region. but that should level off over even abate later tonight as the pre-frontal trough approaches. Cold front will move through the area Monday morning with breezy north winds developing behind it.
724 PM EDT SUN OCT 11 2015 AS LOW PRESSURE APPROACHES THE REGION ON MONDAY. THE LOW PRESSURE SYSTEM WILL BE DRAGGING A COLD FRONT ACROSS THE REGION.
840 PM CDT SUN OCT 11 2015 A steady light southerly breeze around 10 mph will continue overnight as pressure gradients tighten ahead of a low pressure trough approaching via the northern Plains. High pressure slides off to the southeast this afternoon as another developing storm system moves across the southern tier of Canada. will be similarly quiet with warmer southwesterly winds and clear skies. Tomorrow morning, the sfc trof associated with the storm system to the west should move into the region and bring with it a significant wind shift to more northwesterly.
708 PM EDT SUN OCT 11 2015 ONE MORE DAY OF WARM TEMPERATURES REMAINS IN THE FORECAST UNTIL A COLD FRONT BRINGS COLDER WEATHER AND A CHANCE FOR SHOWERS. WHEN CLOUDS WILL BEGIN TO INCREASE IN FRONT OF AN APPROACHING COLD FRONT. OVERNIGHT TEMPERATURES WILL BE ABOUT 5 DEGREES WARMER THAN LAST NIGHT. AND DAYTIME HIGHS WILL RISE INTO THE LOW TO MID 70S. AREA WITH THE BEST CHANCE TO RECEIVE RAIN SHOULD BE IN THE SOUTHEASTERN COUNTIES ALONG THE RIDGES. WITH THE UPPER TROUGH LINGERING SLIGHTLY BEHIND THE COLD FRONT.
WITH AN ASSOCIATED SFC COLD FRONT DRAPED FROM NEAR RAWLINS NORTHEASTWARD INTO THE NORTHERN NE PANHANDLE. THE GJT-CYS MSLP GRADIENT REMAINS ON THE HIGH SIDE AROUND 12 MILLIBARS. THE MODELS SHOW BROAD UPPER-LEVEL RIDGING WITH DRY NORTHWEST FLOW ALOFT OVER THE CWA.
PREFRONTAL COMPRESSIONAL WARMING TOMORROW MAY BRING AFTN READINGS INTO THE LOWER 90S. WHICH HAS RESULTED IN TEMPS 5-10 DEGREES WARMER THAN YESTERDAY. AN UPPER TROUGH OVER THE PAC NW THIS MORNING WILL CONTINUE TO TRANSLATE E INTO THE NRN PLAINS THIS AFTERNOON. THE DEEPENING LOW SHOULD AMPLIFY THE ATTENDANT TROUGH SWD INTO THE MID MS VALLEY MONDAY AFTERNOON. THE ECMWF/GFS ALSO SUGGEST AN UPPER RIDGE WILL BUILD EAST INTO THE SRN PLAINS/LOWER MS VALLEY LATE NEXT.
917 PM MDT SUN OCT 11 2015 COLD FRONT HAS PASSED TO THE NORTH AND EAST. AN UPPER LEVEL TROUGH OVER THE NORTHERN ROCKIES WILL RACE EASTWARD THE NEXT 24 HOURS AND BE OVER THE GREAT LAKES BY MONDAY AFTERNOON. THIS WILL FLATTEN THE RIDGE THAT HAS BEEN OVER THE REGION. A COLD FRONT WILL PUSH THROUGH THE AREA TONIGHT. HIGH PRESSURE WILL BE OVER THE AREA MONDAY. HIGH TEMPERATURES WILL BE COOLER BUT STILL ABOVE NORMAL WITH HIGHS IN THE UPPER 60S TO LOWER 70S ACROSS NORTHEAST COLORADO.
RIDGING ALOFT ACROSS SOUTH-CENTRAL THIS AFTERNOON WITH A PROGRESSIVE SHORT WAVE DIVING INTO THE NORTHERN PLAINS. AN ASSOCIATED COLD FRONT WILL DIVE SOUTH THROUGH THE PLAINS TONIGHT AND INTO NORTH-CENTRAL TEXAS TOMORROW AFTERNOON. A PRE-FRONTAL TROUGH REACHES THE HILL COUNTRY DURING THE AFTERNOON. SOUTHWEST/DOWNSLOPING WINDS AHEAD OF THE PRE-FRONTAL TROUGH WILL LEAD TO VERY WARM CONDITIONS FOR MID OCTOBER.
747 PM EDT SUN OCT 11 2015 HIGH PRESSURE OFF THE COAST OF NEW ENGLAND WILL CONTINUE TO PROVIDE THE NORTH COUNTRY WITH DRY CONDITIONS THROUGH COLUMBUS DAY.
WATER VAPOR IMAGERY SHOWS MID LEVEL HIGH PRESSURE ACROSS NORTHEASTERN MEXICO AND MID LEVEL LOW PRESSURE ACROSS THE SOUTHEAST CONUS.
A warm air mass is currently in place across the region as highs are in the lower to middle 80s this afternoon. An upper level trough is currently spreading east into the northern plains this afternoon. The trough will continue to track east tonight and Monday pushing into the Great Lakes region by Monday evening. The trough will push a cold front south through the area Monday morning. A cooler air mass will spread into the area but not overly cool as highs in the middle 70s will still occur Monday afternoon.
1147 PM CDT SUN OCT 11 2015 WINDS AND TIMING OF COLD FRONT WERE THE FOCUS OF THE FORECAST. WENT SLIGHTLY COOLER THAN PREVIOUS FORECAST BUT WAS STILL A DEGREE OR TWO WARMER THAN MOS GUIDANCE FOR MUCH OF THE AREA. WITH STRONG SUBSIDENCE BEHIND BOUNDARY AND COOLER TEMPERATURES PUSHING IN BEHIND UPPER LEVEL LOW ACROSS NORTHERN US. LARGE UPPER LEVEL LOW WILL CONTINUE TO PUSH EAST QUICKLY LEAVING PERSISTENT NORTHWESTERLY FLOW ACROSS MIDWEST THROUGH MAJORITY OF EXTENDED. LATE IN WEEK ANOTHER UPPER LEVEL LOW IS EXPECTED TO PUSH SOUTH ACROSS GREAT LAKES REGION.
A COLD FRONT IS EXPECTED TO PASS THROUGH THE AREA ON MONDAY AFTERNOON/EVENING.
916 PM CDT SUN OCT 11 2015 QUIET WEATHER PATTERN THROUGH THE OVERNIGHT HOURS AS HIGH PRESSURE REMAINS IN CONTROL. TEMPERATURES TRENDING TOWARD THE NORM IN THE LOW TO MID 80S. BEGINNING TO SEE A WEAK SOUTHERLY FLOW RETURN OVER THE WESTERN PORTION OF THE REGION WITH SURFACE RIDGING ADVANCING EAST ACROSS THE AREA.
907 PM CDT SUN OCT 11 2015 THE STRONGEST WIND GUSTS ASSOCIATED WITH THE FIRST COLD FRONT HAVE ENDED. EXPECT THESE TO CONTINUE UNTIL THE NEXT COLD FRONT ARRIVES LATE TONIGHT INTO MONDAY. THE SECOND SHOT FOR STRONGER WINDS COMES WITH A SECONDARY COLD FRONT LATER TONIGHT. WINDS AND SHOWERS WILL SUBSIDE MONDAY AFTERNOON WITH THE POTENTIAL FOR FROST MONDAY NIGHT AS HIGH PRESSURE MOVES INTO THE REGION.
630 PM CDT SUN OCT 11 2015 WINDS AND TIMING OF COLD FRONT WERE THE FOCUS OF THE FORECAST. WENT SLIGHTLY COOLER THAN PREVIOUS FORECAST BUT WAS STILL A DEGREE OR TWO WARMER THAN MOS GUIDANCE FOR MUCH OF THE AREA. WITH STRONG SUBSIDENCE BEHIND BOUNDARY AND COOLER TEMPERATURES PUSHING IN BEHIND UPPER LEVEL LOW ACROSS NORTHERN US. LARGE UPPER LEVEL LOW WILL CONTINUE TO PUSH EAST QUICKLY LEAVING PERSISTENT NORTHWESTERLY FLOW ACROSS MIDWEST THROUGH MAJORITY OF EXTENDED. LATE IN WEEK ANOTHER UPPER LEVEL LOW IS EXPECTED TO PUSH SOUTH ACROSS GREAT LAKES REGION.
THE WARM TEMPERATURES WERE DUE TO WARM AIR ADVECTION ON LOW LEVEL SW WINDS AND MIXING INTO A EDGE OF THERMAL RIDGE OF VERY WARM AIR ALOFT. A WEAK RIDGE AXIS AND ANTICYCLONIC FLOW WAS ROLLING OVER THE LOCAL AREA PROVIDING NEARLY CLEAR SKIES. A NEARLY STATIONARY UPPER LOW OVER THE MID ATLANTIC COAST APPEARED TO BE ASSISTING IN HOLDING THE SUBSIDENCE REGIME OVER THE FORECAST AREA. THE TRANSITION BACK TO MORE TYPICAL MID OCTOBER TEMPERATURES WILL TAKE PLACE FOLLOWING A COLD FRONTAL PASSAGE LATE TONIGHT.
745 PM EDT SUN OCT 11 2015 TEMPERATURES WILL REMAIN ABOVE NORMAL WITH QUIET WEATHER THROUGH MONDAY NIGHT AS HIGH PRESSURE CONTINUES TO CONTROL THE WEATHER.
809 PM MDT SUN OCT 11 2015 HIGH WIND AND FIRE WEATHER HEADLINES HAVE EXPIRED EARLY THIS EVENING AS WINDS DIMINISH AND RELATIVE HUMIDITIES SLOWLY RECOVER IN THE WAKE OF A COLD FRONTAL PASSAGE. IT WILL BE COOLER OVERNIGHT AS LOW TEMPS DROP INTO THE 30S. WITH AN ASSOCIATED SFC COLD FRONT DRAPED FROM NEAR RAWLINS NORTHEASTWARD INTO THE NORTHERN NE PANHANDLE. THE GJT-CYS MSLP GRADIENT REMAINS ON THE HIGH SIDE AROUND 12 MILLIBARS. THE MODELS SHOW BROAD UPPER-LEVEL RIDGING WITH DRY NORTHWEST FLOW ALOFT OVER THE CWA.
1216 AM EDT MON OCT 12 2015 LOW PRESSURE MEANDERS OFF THE MID ATLANTIC COAST. AS HIGH PRESSURE BUILDS ACROSS THE NORTHERN MID ATLANTIC STATES THROUGH MONDAY NIGHT.
MID- AFTERNOON HIGH TEMPERATURES HAVE RISEN INTO THE LOW/MID 70S WITH LIGHT WINDS. AN UPPER LOW THAT BROUGHT CLOUDS AND RAIN ACROSS PARTS OF THE MID ATLANTIC AND SE COAST WAS ON A WEAKENING TREND AS IT SHIFTS OFF OF THE NC/SC COAST. A DISTURBANCE WAS MOVING EASTWARD IN THE POLAR JET OVER THE HIGH PLAINS OF WY/MT. A SLIGHTLY COOLER THAN SEASONABLE NIGHT IS EXPECTED WITH LOWS AROUND 50. THE NEXT SYSTEM AND ITS COLD FRONT WILL BRING A CHANCE OF SHOWERS AND ISOLATED THUNDERSTORMS MONDAY NIGHT. THIS SYSTEM'S COLD FRONT SHOULD MOVING IN A NW-SE FASHION OVER THE REGION IN THE LATE EVENING TO BEFORE DAYBREAK.
922 PM EDT SUN OCT 11 2015 10 DEGREE SPREAD FROM THE RIDGES TO THE VALLEYS PRESENTLY WITH THE COLDER VALLEYS CURRENTLY FALLING INTO THE UPPER 40S. WE SHOULD BE ON PACE FOR SOME OF THESE VALLEYS TO REACH THE LOW 40S TONIGHT. ALSO AS WINDS SLOWLY INCREASING AHEAD OF THE APPROACHING COLD FRONT. UPPER LEVEL WISE WE HAVE WEAK RIDGING. THIS BREAKS DOWN LATE MONDAY WITH APPROACHING UPPER LEVEL TROUGH AXIS SWINGING ACROSS EASTERN KY. ANOTHER DECENT DAY IS SETTING UP FOR YOUR COLUMBUS DAY WITH INCREASING CLOUDS LATE IN THE DAY AHEAD OF COLD FRONT. A LARGE SCALE UPPER TROUGH WILL BE OVER THE EASTERN PART OF THE CONTINENT. A WAVE LATE IN THE WEEK IS EXPECTED TO BE ACCOMPANIED BY ANOTHER COLD FRONT PUSHING THROUGH KY.
905 PM PDT SUN OCT 11 2015 A GRADUAL COOLING TREND IS EXPECTED THIS WEEK AS ONSHORE FLOW INCREASES AND A WEAK LOW PRESSURE SYSTEM TO THE SOUTHWEST MOVES OVERHEAD.
AS HIGH PRESSURE BEGINS TO MAKE ITS WAY EWD TOWARD THE SRN ATLANTIC BASIN. QUIET WX SHOULD PREVAIL INTO THE START OF THE NEW WORK WEEK BEFORE THE NEXT CHANCE OF RAIN RETURNS MON NIGHT AHEAD OF A REINFORCING COLD FRONT. WITH HIGH PRESSURE TO THE E IN CONTROL OF THE WX OVER THE CNTRL TN VALLEY. AS ANOTHER COLD FRONT APPROACHES THE AREA.
THAT IS EXPECTED TO BRING ABUNDANT SUNSHINE BOTH DAYS WITH WARMER AFTERNOON TEMPERATURES.
HIGH PRESSURE WILL PROVIDE DRY WEATHER FOR THE MAJORITY OF THE SEVEN DAY FORECAST PERIOD. EXPECT AMPLE DIURNAL CUMULUS DEVELOPMENT TODAY PER FORECAST SOUNDINGS WITH CONVECTIVE TEMPERATURES IN THE LOW 70S BUT A SUBSTANTIAL SUBSIDENCE INVERSION TO CAP OFF THE LOW LEVEL INSTABILITY. SHOULD SEE THE LOW TO MID 70S ACROSS THE NORTHEAST HALF AND MID 70S TO AROUND 80 ACROSS THE SOUTHWEST HALF.
310 AM CDT THU AUG 27 2015 Looks like a quiet day as an upper level ridge of high pressure dominates.
OTHERWISE WITH FAIRLY WARM COLUMN AND WARMER START TEMPERATURES SHOULD RECOVER TO AT OR A BIT ABOVE AVERAGE. WITH LOW LEVEL MOISTURE RECOVERY MINIMUM TEMPERATURES WILL BE WARMER.
433 AM EDT THU AUG 27 2015 A VERY SLOW MOVING UPPER LEVEL TROUGH OF LOW PRESSURE WILL MOVE ACROSS THE AREA ON TODAY. DRY WEATHER RETURNS FOR FRIDAY AS HIGH PRESSURE BUILDS INTO THE REGION FOLLOWED BY ANOTHER LOW CHANCE FOR PRECIPITATION OVER THE WEEKEND. BASE OF 500MB TROUGH WILL MOVE ACROSS THE NORTH COUNTRY TODAY, PRODUCING PLENTIFUL CLOUDS AND A SLIGHT CHANCE TO LOW CHANCE FOR ISOLATED SHOWERS, MAINLY IN THE MORNING. AFTER 18Z, MODELS SHOW THE BASE OF THE TROUGH WILL BE MOVING INTO NH AND ME. THERE WILL BE A GRADUAL INCREASE IN MID LEVEL HEIGHTS WHILE AT THE SURFACE, RIDGE OF HIGH PRESSURE BUILDS IN. HIGH TEMPERATURES WILL BE BELOW NORMAL, RANGING FROM MID 60S TO MID 70S AND SLIGHTLY COOLER IN THE HIGH TERRAIN.
THE AMAZING AUGUST CP AIRMASS WILL CONTINUE FOR THE NEXT 24 HOURS, WITH HIGH PRESSURE DOMINATING 1 MORE DAY AS IT SLIDES EWD FROM THE WINDY CITY TO THE KEYSTONE STATE. TEMPS WILL BE IN 83-87 RANGE, AND DEW POINTS WILL CLIMB INTO THE LOWER 60S FRI AFTERNOON.
123 AM EDT THU AUG 27 2015 A LARGE AREA OF HIGH PRESSURE OVER THE MIDDLE OF THE COUNTRY WILL BUILD INTO THE REGION THROUGH THE UPCOMING WEEKEND.
ANOTHER WARM DAY IS EXPECTED TODAY AS STRONG HIGH PRESSURE BUILDS OVER SOUTHWESTERN CALIFORNIA. SLIGHT COOLING IS LIKELY ON FRIDAY AS AN UPPER LEVEL TROUGH APPROACHES THE WEST COAST.
COOLER DAY WITH MORE CLOUD COVER AND IN THE WAKE OF A PASSING COLD FRONT. RIDGING DEVELOPS OVERHEAD AND WITH LIMITED LOW AND MID LEVEL MOISTURE AND MINIMAL LIFT.
413 AM EDT THU AUG 27 2015 HIGH PRESSURE OVER THE CENTRAL GREAT LAKES THIS MORNING WILL DRIFT EASTWARD THROUGH FRIDAY. A WARM FRONT WILL MOVE INTO OHIO FRIDAY NIGHT.
135 AM EDT THU AUG 27 2015 HIGH PRESSURE WILL BUILD AND END THE SPARSE SHOWER CHANCES AND COOL WEATHER BY THE END OF THE WEEK. THE CLOSED UPPER LOW.
DAYTIME HIGH TEMPERATURES SHOULD REGISTER IN THE LOW TO MID 80S WHILE DEWPOINTS CONTINUE TO BE UNSEASONABLY COOL, IN THE 50S. FURTHER EAST, THE TROUGH AXIS THAT HAD BEEN PREVAILING ACROSS THE EASTERN HALF OF THE CONUS WILL BE MOVING NE TOWARDS EASTERN QUEBEC/GREENLAND ON THU/FRI.
WITH THE UPPER RIDGE CENTERED OVER FAR WEST TEXAS AND NEW MEXICO TODAY AND SHIFTING SLIGHTLY FARTHER WESTWARD THROUGH THE NEXT COUPLE DAYS.
137 AM EDT THU AUG 27 2015 HIGH PRESSURE WILL BUILD AND END THE SPARSE SHOWER CHANCES AND COOL WEATHER BY THE END OF THE WEEK. THE CLOSED UPPER LOW.
220 AM EDT THU AUG 27 2015 A VERY SLOW MOVING UPPER LEVEL TROUGH OF LOW PRESSURE WILL CONTINUE TO HEAD TOWARD THE NORTH COUNTRY TONIGHT AND THEN MOVE ACROSS THE AREA ON THURSDAY. DRY WEATHER RETURNS FOR FRIDAY AS HIGH PRESSURE BUILDS INTO THE REGION. ISOLATED SHOWERS STRIVING TO AFFECT NORTHERN NY AS BASE OF UPPER TROUGH MOVES INTO THE REGION.
THOUGH THE GFS HAS BEEN NAILING THE LOW TEMPERATURES THE LAST COUPLE OF NIGHTS. HAVE LEANED MORE WITH THE COOLER NAM'S STRONG RADIATIONAL AFFECTS.
TRICKY PART OF THE FORECAST TONIGHT IS THE LOW TEMPS. SOME SPOTS ARE ALREADY IN THE LOW 50S SO BUMPED THE LOWS DOWN 1-2 DEGREES. HIGH PRESSURE WILL REMAIN IN CONTROL OF THE SENSIBLE WEATHER FOR THE SHORT TERM. THE TROUGH WILL FINALLY PUSH EWD THIS AFTERNOON. THE LL RETURN FLOW FROM THE GULF WILL BEGIN USHERING IN 60 DEGREE DEW POINTS AND WARMER TEMPS. HIGH TEMPERATURES ON THURSDAY WILL REMAIN BELOW NORMAL BUT WILL FINALLY RETURN TO THE LOWER 80S ON FRIDAY. HELPING TO PIVOT THE RIDGE AXIS FROM THE ROCKIES TO THE PLAINS AND EVENTUALLY THE WESTERN GREAT LAKES BY THE WEEKEND.
HIGH THE 250 MB UPPER LEVEL WINDS WERE OUT OF THE NORTHWEST EARLY THIS MORNING WITH WEAK RIDGING OCCURRING BRIEFLY THIS AFTERNOON AND EVENING. WITH DRY AIR IN THE LOWER LAYERS RESULTING IN MAINLY VIRGA.
1229 AM CDT THU AUG 27 2015 HIGH PRESSURE CENTERED OVER THE GREAT LAKES REGION WILL CONTINUE TO CONTROL OUR WEATHER WITH EASTERLY WINDS EXPECTED BETWEEN 5 AND 10 KNOTS. TO THE LOWER 60S WEST. /ISSUED 617 PM CDT WED AUG 26 2015/ HIGH PRESSURE CONTINUES OVER THE AREA. THE UPPER HIGH IS OVER THE PLAINS AND PROVIDING ARKANSAS WITH A NORTHERLY FLOW.
WARM AND DRY CONDITIONS WILL CONTINUE THROUGH THURSDAY AS STRONG HIGH PRESSURE REMAINS OVER THE SOUTHWESTERN UNITED STATES. SLIGHT COOLING IS LIKELY ON FRIDAY AS AN UPPER LEVEL TROUGH APPROACHES THE WEST COAST.
ONCE THE FOG BURNS OFF IT WILL BE A RATHER PLEASANT DAY ACROSS NORTHEAST WISCONSIN WITH HIGH PRESSURE CONTINUING TO INFLUENCE THE WEATHER ACROSS THE WESTERN GREAT LAKES. SOUTHERLY WINDS AND WARM AIR ADVECTION ON THE BACKSIDE OF THE HIGH SHOULD ALLOW AFTERNOON HIGHS TO SOAR INTO THE LOWER TO MIDDLE 70S. LOW PRESSURE EMERGING OUT OVER THE NORTHERN PLAINS TODAY WILL TRACK EAST TOWARDS THE UPPER MISSOURI VALLEY TONIGHT.
AN UPPER LEVEL RIDGE OVER EASTERN NEW MEXICO THIS MORNING WILL SHIFT TO THE SOUTHWEST DURING THE NEXT 36 HOURS. A COLD FRONT WILL SINK SOUTH DOWN THE PLAINS.
/ISSUED 743 PM EDT WED AUG 26 2015/ LONG WAVE TROUGH OVER THE EASTERN STATES DOMINATING THROUGH THURSDAY WITH DRY NORTHWEST FLOW ALOFT. FLOW MODIFYING BY THURSDAY NIGHT AS THE UPPER TROUGH WEAKENS BUT LEAVES WEAK LOW PRESSURE TO THE WEST. WHILE A LONGWAVE TROUGH OVER THE E US RELAXES AND A WEAK CLOSED LOW DEVELOPS ACROSS THE GULF COAST STATES/GOM. THE COMBINATION OF SW FLOW ALOFT FROM CLOSED LOW AND ESE FLOW AT THE SFC BECKONS FOR THE RETURN OF ATLANTIC MOISTURE TO THE CWA.
HIGH PRESSURE ALOFT ALONG WITH LIGHT ONSHORE FLOW TODAY WILL RESULT IN THE THE LAST WARM SPELL OF THE MONTH. LOOK FOR WET AND COOLER WEATHER. WESTERN WA WILL REMAIN BETWEEN AN UPPER LEVEL TROF OFFSHORE AND AN UPPER RIDGE OVER THE INTERIOR WEST. THE LOW LEVEL FLOW WILL REMAIN LIGHT ONSHORE TODAY. A MAJOR CHANGE IN THE WEATHER PATTERN WILL COMMENCE TONIGHT AS THE UPPER LEVEL RIDGE AXIS SHIFTS A BIT EASTWARD. ALLOWING THE UPPER TROF OFFSHORE TO MOVE TOWARD THE PACIFIC NORTHWEST.
A SYNOPTIC DISTURBANCE CURRENTLY LOCATED ACROSS WESTERN WYOMING WILL ROUND THE EDGE OF A LARGE ANTICYCLONE TO THE SOUTH. HAVE THE HIGHEST POPS FROM HAYS, DOWN TO NEAR DODGE CITY, AND WRAPPING BACK UP TO THE NORTHEAST TOWARDS STAFFORD COUNTY.
534 AM EDT THU AUG 27 2015 HIGH PRESSURE WILL BUILD AND END THE SPARSE SHOWER CHANCES AND COOL WEATHER BY THE END OF THE WEEK. THE PERSISTENT CLOSED UPPER LOW.
A WEAK DISTURBANCE WILL WEAKEN THE UPPER LEVEL RIDGE ON THURSDAY WITH INCREASING MONSOONAL MOISTURE. A LEE TROUGH ASSOCIATED WITH THIS WAVE WILL STRENGTHEN THE SURFACE PRESSURE GRADIENT.
641 AM EDT THU AUG 27 2015 CLEARING SKIES WILL ALLOW FOR WARMER TEMPERATURES TODAY WITH MOST LOCATIONS ENJOYING HIGHS IN THE LOWER 70S.
333 AM CDT THU AUG 27 2015 UPPER LEVEL TROUGHING STILL IN PLACE ACROSS THE EASTERN CONUS WITH RIDGING ACROSS THE DESERT SOUTHWEST. AT THE SFC NORTHERLY FLOW CONTINUES ACROSS ALABAMA WITH HIGH PRESSURE TO THE NORTH OVER THE GREAT LAKES REGION. SKIES ARE CLEAR AND TEMPS HAVE FALLEN INTO THE LOW/MID 60S IN MOST LOCATIONS. DRY CONDITIONS WILL CONTINUE TODAY WITH TEMPS A COUPLE DEGREES WARMER THAN YESTERDAY. SFC WINDS WILL BECOME EASTERLY ON FRIDAY AS THE RIDGE TRANSLATES EASTWARD TOWARD THE ATLANTIC COAST.
351 AM CDT THU AUG 27 2015 UPPER LEVEL RIDGE CONTINUES TO CHURN OVER W TX. WITH THE LARGE- SCALE TROF FIRMLY ANCHORED OVER THE ERN U.
205 AM EDT THU AUG 27 2015 HIGH PRESSURE BUILDS ACROSS THE REGION THROUGH THURSDAY. RESIDUAL TROUGH ALOFT WILL LINGER GENERALLY FM THE OH VLY TO THE GULF CST STATES.
INDICATING THAT THE LOW WILL DEEPEN OVER NORTHERN NEBRASKA AND SHIFT MOST PRECIPITATION SOUTHEAST OF THE CWA. WITH THE REST OF THE FORECAST DOMINATED BY A WESTERN CONUS RIDGE THAT EXTENDS INTO THE CWA.
UPPER TROUGH AXIS OVER THE EASTERN CONUS WILL REMAIN WEST OF THE FORECAST AREA. MAIN UPPER TROUGH JUST TO OUR WEST WILL BEGIN GRADUALLY WEAKENING AND LIFTING NORTH. BUT STILL LEAVING BEHIND A WEAK UPPER TROUGH TO OUR WEST AND CUT OFF LOW IN THE GULF OF MEXICO. WHILE UPPER RIDGE OVER THE WESTERN ATLANTIC BEGINS TO BUILD WESTWARD TOWARDS THE SE COAST. THIS ALONG WITH INDICATIONS OF WEAK UPPER TROUGHINESS REMAINING TO OUR WEST. WITH SUBTROPICAL RIDGE REMAINING OVER THE WESTERN ATLANTIC AND BUILDING TOWARDS THE SE COAST SOME. MODELS GENERALLY MAINTAIN WEAK UPPER TROUGH TO OUR WEST AND SUBTROPICAL UPPER RIDGE TO OUR SE. MAIN CONCERN FOR THIS TIME PERIOD WILL BE TROPICAL CYCLONE ERIKA.
A MONSOONAL SURFACE PATTERN WILL PERSIST OVER MOST OF THE SEVEN DAY FORECAST PERIOD WITH THE NORMAL DESERT HEAT LOW OVER WESTERN ARIZONA COMBINING WITH HIGH PRESSURE TO THE NORTH TO INDUCE LOW LEVEL SOUTHERLY TO EASTERLY LOW LEVEL WINDS.
THIS TREND CONTINUES INTO SAT AFTERNOON AT THE SAME TIME A CLOSED UPPER LOW MOVES EASTWARD ALONG THE LOWER GULF COAST.
1123 PM MDT WED AUG 26 2015 WV IMAGERY AND RAP UPPER LEVEL ANALYSIS SHOWS RIDGE IN PLACE ACROSS THE PLAINS WITH 596 DM CENTER AXIS EXTENDING NORTH OVER OUR CWA. UPPER LEVEL TROUGH WILL ROTATE AROUND THE NORTH SIDE OF THE RIDGE AND DEEPEN AS IT TRACKS ACROSS THE NORTHERN PLAINS. GFS/NAM BOTH SHOW THE BEST PRECIP SIGNAL IN OUR EAST/SOUTHEAST ALONG PRE FRONTAL TROUGH.
410 AM EDT THU AUG 27 2015 HIGH PRESSURE WILL BUILD AND END THE SPARSE SHOWER CHANCES AND COOL WEATHER BY THE END OF THE WEEK. THE PERSISTENT CLOSED UPPER LOW.
124 AM EDT THU AUG 27 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION THURSDAY INTO FRIDAY. LOWS TONIGHT SHOULD DROP INTO THE LOW TO MID 50S HIGH PRESSURE WILL SLIDE EAST ACROSS THE AREA THURSDAY INTO FRIDAY AS SOME SHORT WAVE RIDGING DEVELOPS ALOFT. AS MODELS TRY TO PIN DOWN THE STRENGTH AND TRACK OF ERIKA AND A DEVELOPING MID/UPPER RIDGE OVER THE CENTRAL/EASTERN CONUS.
WITH A WEAK ATTENDANT COLD FRONT. SCATTERED STORMS SHOULD DEVELOP LATE THIS AFTERNOON ALONG THE FRONT AND PRE-FRONTAL TROUGH. IS PROGGED TO SLIDE SOUTHEASTWARD ACROSS EASTERN KANSAS FRIDAY AFTERNOON/EVENING WITH THE WEAK COLD FRONT SLOWER TO MOVE THROUGH SOUTH-CENTRAL AND SOUTHEAST KANSAS.
137 AM EDT THU AUG 27 2015 HIGH PRESSURE OVER THE MIDWEST WILL MOVE EAST ACROSS THE OHIO VALLEY AND LOWER GREAT LAKES REGION TONIGHT AND THURSDAY. THE HIGH WILL DRIFT ACROSS PENNSYLVANIA ON FRIDAY AS LOW PRESSURE MOVES TO IOWA. THURSDAY BEGINS WITH HIGH PRESSURE AND DRY AIR ALOFT ACROSS THE AREA HOWEVER WITH LIGHT NORTH FLOW OFF THE LAKE UNDER A EXITING UPPER TROUGH NOT STILL EXPECT CLOUDY SKIES AT LEAST ACROSS NERN OHIO AND NWRN PA TO START. TO THE WEST ENOUGH DRYING AND HIGH PRESSURE SHOULD GET IN TO BREAK THE CEILINGS SO WILL BEING THERE WITH "PARTLY CLOUDY". THE HIGH WILL CONTINUE TO INFLUENCE THE AREA THROUGH FRIDAY AS IT MOVES EAST ACROSS PA.
A TROUGH OF LOW PRESSURE WILL CONTINUE TO SLOWLY WASH OUT OVER THE LAKE OKEECHOBEE REGION THROUGH FRIDAY. POPS WILL REMAIN IN THE CHANCE TO LIKELY CATEGORY WITH THE THE HIGHEST POPS OVER THE INTERIOR AND EAST COAST METRO AREAS EACH DAY.
605 AM EDT THU AUG 27 2015 AN UPPER LEVEL TROUGH OF LOW PRESSURE WILL MOVE OVER THE REGION TODAY AND LIFT NORTHEAST OF THE AREA TONIGHT.
255 AM CDT THU AUG 27 2015 High pressure will shift east to the East Coast during the next couple of days.
334 AM EDT THU AUG 27 2015 HIGH PRESSURE ACROSS THE OHIO VALLEY TODAY WILL SETTLE ACROSS THE DELAWARE VALLEY BY FRIDAY AND THEN MOVE OFFSHORE THIS WEEKEND.