Aikyam-Lab/Synoptic-Bench huggingface dataset:
1133 AM MDT TUE AUG 25 2015 UPPER LEVEL RIDGE DOMINATING THE WEATHER PATTERN TODAY. TODAY THROUGH WEDNESDAY NIGHT UPPER RIDGE COVERS THE WESTERN 2/3 OF THE CONUS. WITH AN UPPER LOW SPINNING JUST NORTH OF THE GREAT LAKES REGION. A FEW HIGH CLOUDS ARE STREAMING OVER THE RIDGE INTO THE NORTHER PLAINS. ANOTHER MOSTLY SUNNY AND WARM DAY IS EXPECTED TODAY WITH UPPER RIDGE IN PLACE. MODELS ARE IN AGREEMENT THAT AN UPPER WAVE WILL APPROACH THE REGION WEDNESDAY AS IT PASSES THROUGH THE RIDGE.
135 PM EDT TUE AUG 25 2015 AVIATION A LARGE SLOW MOVING LOW PRESSURE SYSTEM OVER THE NORTHERN GREAT LAKES REGION WILL CONTINUE TO PRODUCE CLOUDS AND SCATTERED SHOWERS THROUGH WEDNESDAY ALONG WITH COOL TEMPERATURES IN THE 60S.
339 PM EDT TUE AUG 25 2015 A COLD FRONT WILL REMAIN STALLED OVER NORTHEAST NORTH CAROLINA TONIGHT. HIGH PRESSURE NUDGES INTO THE REGION WEDNESDAY.
SWWD EXTENSION OF A NEAR FULL LATITUDE TROUGH FROM ONT/QUE TO THE NERN GOMEX WILL PINCH OFF INTO AN ELONGATED CLOSED LOW AND DROP FARTHER SW INTO THE GOMEX THIS WILL KEEP THE FL PENINSULA IN SWRLY FLOW ALOFT BETWEEN THE TROUGH AND THE STOUT ATLC RIDGE TO ITS EAST. RESIDUAL BAND OF DEEPER MOISTURE WILL DRIFT NW INTO CTRL FL AS THE SFC REFLECTION OF THE ATLC RIDGE BUILDS NWD.
OTHERWISE EXPECT VFR CONDITIONS THROUGH LATE TONIGHT AS WEAK HIGH PRESSURE CONTINUES TO COVER OK AND N TX. A MID-LEVEL/UPPER LEVEL RIDGE.
243 PM CDT TUE AUG 25 2015 A DOMINANT UPPER RIDGE WILL ALL BUT STAY PUT ACROSS THE WEST-CENTRAL PART OF THE COUNTRY WHILE AN UPPER TROUGH DEEPENS OVER THE EASTERN THIRD OF THE NATION. SUBSIDENCE FROM THE EASTERN REACHES OF THE RIDGE WILL BE STRONG ENOUGH TO KEEP TEMPERATUERS SEASONABLY WARM OVER THE COURSE OF THE WEEK.
305 PM CDT TUE AUG 25 2015 Quiet weather pattern persisting this afternoon as upper ridging continues to build across the Central and Northern Rockies. although a degree or two warmer as 850-hPa temps continue to moderate through the overnight period. Much of the same on Wednesday with high pressure once again providing a pleasant and seasonal day.
As a deep stacked low over the Great Lakes/srn Canada moves toward the Canadian Maritimes region and damps out, gradient nwrly flow aloft between it and a swrn CONUS mid level ridge will continue over the PAH forecast area for the next couple of days.
THE ATMOSPHERE IS VERY DRY AND WITH GOOD RADIATIONAL COOLING TEMPERATURES WILL DROP DOWN INTO THE 50S WITH SOME UPPER 40S IN THE HIGHER ELEVATIONS. WHILE A NORTHERLY FLOW HELPS TO KEEP TEMPERATURES IN CHECK IN THE LOW TO MID 80S. SOME DIURNAL SCATTERED THUNDERSTORMS WILL BE POSSIBLE ALONG THE HIGHER TERRAIN. WITH PERHAPS SOME SLIGHTLY MORE WIDESPREAD ACTIVITY WITH A WEAK TROUGH PASSAGE. CHATTANOOGA AIRPORT, TN 58 83 63 84 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 58 82 60 83 / 0 0 0 0 OAK RIDGE, TN 57 82 60 83 / 0 0 0 0 TRI CITIES AIRPORT, TN 53 80 56 81 / 0 0 0 0.
1240 PM CDT TUE AUG 25 2015 HIGH PRESSURE REMAINS IN PLACE OVER THE REGION. HIGH PRESSURE REMAINS ANCHORED OVER THE RED RIVER VALLEY TODAY.
AN UNSEASONABLY DRY AIRMASS CONTINUES TO SPREAD SOUTHWARD ACROSS THE CENTRAL GULF COAST REGION THIS AFTERNOON BEHIND A DEEPENING UPPER LEVEL TROUGH OVER THE OHIO AND TENNESSEE VALLEY REGION. SKIES ARE GENERALLY CLEAR ACROSS THE FORECAST AREA THIS AFTERNOON WITH SURFACE DEWPOINTS FALLING INTO THE MID 50S TO THE LOWER 60S. A VERY DRY DEEP LAYER AIRMASS WILL REMAIN ENTRENCHED ACROSS THE FORECAST AREA THROUGH WEDNESDAY AFTERNOON ON THE BASE OF THE UPPER LEVEL TROUGH AXIS.
404 PM EDT TUE AUG 25 2015 A WEAK COLD FRONT WILL STALL OVER THE AREA TONIGHT AND WEDNESDAY.
A RIDGE OF HIGH PRESSURE IS EXPECTED TO REMAIN ANCHORED OVER AZ/NM AND EXTENDING INTO HIGH PLAINS.
434 PM EDT TUE AUG 25 2015 A COLD FRONT WILL SLOWLY APPROACH TONIGHT.
330 PM MDT TUE AUG 25 2015 HAVE SEEN ISOLATED SHOWERS DEVELOP OVER THE HIGH COUNTRY AND THEN DRIFT SOUTHWARD. MODELS HAVE AN UPPER RIDGE AXIS CENTERED OVER EASTERN COLORADO WEDNESDAY EVENING.
1225 PM CDT TUE AUG 25 2015 SAME PESKY UPPER LOW CONTINUES TO SPIN OVER ONTARIO THIS MORNING. SHOULD SEE TEMPS BOTTOM OUT IN THE LOWER 40S HERE DURING THE NEXT FEW HOURS. HIGHS TODAY WILL REBOUND INTO THE LOW-MID 70S WEST TO UPPER 60S EAST. WHICH COULD BE COOLER IF THE CLOUD SHIELD SETS UP FURTHER WEST THAN CURRENTLY INDICATED.
245 PM EDT TUE AUG 25 2015 COOLER CONDITIONS AND SPARSE SHOWER CHANCES CAN BE EXPECTED UNTIL HIGH PRESSURE BEGINS TO REBUILD FOR THE WEEKEND. CLOUD COVER INCREASED DRAMATICALLY AS COLD AIR ASSOCIATED WITH THE ENCROACHING UPPER TROUGH HAS SEEPED OVER THE UPPER OHIO REGION TODAY.
ISOLATED THUNDERSTORMS MAY DEVELOP OVER THE HIGHER TERRAIN AFTER 20Z.
257 PM MDT TUE AUG 25 2015 HIGH PRESSURE OVER THE INTERIOR WESTERN US WILL MAINTAIN WARM AND DRY CONDITIONS FOR NORTH CENTRAL AND SOUTHWEST MONTANA.
335 AM CDT TUE OCT 13 2015 NORTHWEST FLOW ALOFT WILL PERSIST THE NEXT 24 HOURS AS HIGH PRESSURE SLOWLY DRIFTS SOUTHEASTWARD ACROSS THE REGION.
631 AM EDT TUE OCT 13 2015 A COLD FRONT WILL PUSH TO THE EAST TODAY.
SURFACE DEW POINTS WERE ONLY IN THE LOWER 50S. AN UPPER TROUGH AND ASSOCIATED SURFACE COLD FRONT WAS RAPIDLY MOVING THIS WAY AND WILL CROSS THE STATE OVERNIGHT INTO EARLY TUESDAY. THINK A BULK OF THE LOWER LEVEL MOISTURE WILL REMAIN SOUTHWEST OF THE AREA WHILE THE BULK OF THE LIFT REMAINS JUST NORTH. LINE OF SHOWERS AND THUNDERSTORMS ALONG AND AHEAD OF A COLD FRONT IS CONTINUING TO PROGRESS SOUTHEAST INTO CENTRAL ALABAMA. MOST OF ACTIVITY SHOULD CLEAR OUT BY MID MORNING IN THE SOUTHEAST RIDGING TAKING OVER AND SKIES CLEARING. 08 RAIN CHANCES WILL RETURN TONIGHT THROUGH TUESDAY AHEAD OF A COLD FRONT.
AN UPPER LEVEL LOW ALONG THE SOUTHEAST COAST WILL LIFT NORTHEAST ALONG THE NORTH CAROLINA AND MID-ATLANTIC COAST THROUGH TONIGHT. A COLD FRONT WILL APPROACH FROM THE WEST TONIGHT AND WILL CROSS THE AREA ON TUESDAY. HIGH PRESSURE WILL BUILD INTO THE AREA ON WEDNESDAY. THE REMNANTS OF THE UPPER LEVEL LOW. THE MAIN TROUGH AXIS. AND ASSOCIATED COLD FRONT AT THE SURFACE. WITH THE ATTENDANT COLD FRONT TO CROSS CENTRAL NC DURING THE AFTERNOON.
149 AM MDT TUE OCT 13 2015 EARLY AFTERNOON WV IMAGERY AND RAP ANALYSIS SHOWS STRONG UPPER LOW ACROSS THE NW GREAT LAKES REGION WITH NW FLOW FROM THE NORTHERN PLAINS THROUGH THE SOUTHERN MISSISSIPPI RIVER VALLEY. STRONG RIDGE WILL CONTINUE TO DOMINATE PATTERN ACROSS SOUTHERN PLAINS WITH NW FLOW ACROSS OUR CWA. WITH UPPER LOW TRANSITIONING EASTWARD RISING HEIGHTS/DEVELOPING LEE TROUGH WILL SUPPORT INCREASING TEMPERATURES TUESDAY. HOWEVER MANY LOCATIONS WILL LIKELY SEE ABOVE NORMAL HIGHS IN THE LOW TO MID 80S.
357 AM EDT TUE OCT 13 2015 A WEAK LOW PRESSURE SYSTEM WILL MOVE NORTHEASTWARD THROUGH THE GULF OF MAINE THIS MORNING FOLLOWED BY A COLD FRONT THIS AFTERNOON AND EVENING. A SECOND COLD FRONT MOVES THROUGH ON WEDNESDAY WITH ANOTHER ROUND OF SHOWERS POSSIBLE.
650 AM EDT TUE OCT 13 2015 A COLD FRONT WILL PASS THROUGH TODAY WITH A GOOD CHANCE OF SHOWERS. MARKING THE TRANSITION TO A COOLER AND UNSETTLED PATTERN FOR THE NEXT SEVERAL DAYS.
A DRY COLD FRONT WILL PUSH ACROSS SOUTHERN AND EASTERN WYOMING EARLY TUESDAY MORNING BEFORE STALLING OUT. TONIGHT THROUGH TUESDAY A HIGH PRESSURE RIDGE ALOFT OVER THE GREAT BASIN EXTENDING NORTH INTO THE NORTHERN ROCKIES WITH NORTHWEST FLOW ALOFT OVER WESTERN AND CENTRAL WYOMING WILL BUILD THROUGH TUESDAY WITH DRY MOSTLY CLEAR CONDITIONS. TONIGHT WILL BE COOL BUT 7 TO 12 DEGREES WARMER THAN LAST NIGHT. TUESDAY WILL BE WARMER. A SURFACE LEE SIDE TROUGH WILL DEEPEN EAST OF THE ROCKIES WITH INCREASING WEST TO SOUTHWEST WINDS OVER THE AREA. THIS AREA WILL ALSO HAVE THE LOWEST RELATIVE HUMIDITY.
327 AM CDT TUE OCT 13 2015 AREA OF HIGH PRESSURE TO CONTINUE TO BUILD INTO THE CENTRAL US AT THE SURFACE.
353 AM CDT TUE OCT 13 2015 A COLD FRONT IS ALMOST TO OUR NORTHERN REGION (EAST TEXAS AND CENTRAL LOUISIANA) EARLY THIS MORNING. THE COLD FRONT SHOULD BE THROUGH MOST OF THE REGION BY NOON TODAY. DESPITE SEEING A COLD FRONT PASSAGE TODAY.
416 AM EDT TUE OCT 13 2015 A COLD FRONT WILL PASS THROUGH TODAY WITH A GOOD CHANCE OF SHOWERS. MARKING THE TRANSITION TO A COOLER AND UNSETTLED PATTERN FOR THE NEXT SEVERAL DAYS.
114 AM EDT TUE OCT 13 2015 A COLD FRONT APPROACHING FROM THE NORTHWEST WILL MOVE THROUGH THE FORECAST AREA TUESDAY. A PRESSURE RIDGE WILL REMAIN SOUTH OF THE FORECAST AREA OVERNIGHT. THE THE WESTERLY FLOW NORTH OF THE RIDGE WILL LIMIT MOISTURE RETURN INTO THE FORECAST AREA AHEAD OF THE APPROACHING COLD FRONT. MIXING AHEAD OF THE FRONT FAVORS THE WARMER TEMPERATURE GUIDANCE TONIGHT. THE MODELS DISPLAY THE COLD FRONT MOVING THROUGH THE FORECAST AREA TUESDAY AFTERNOON AND EVENING. THE WARMER TEMPERATURE GUIDANCE IS USUALLY BEST JUST AHEAD OF COLD FRONTS. FURTHER DRYING WILL OCCUR BEHIND THE COLD FRONT TUESDAY NIGHT AND EXPECT MOSTLY CLEAR SKIES TUESDAY NIGHT THROUGH WEDNESDAY NIGHT.
SOUTHWESTERLY WINDS WILL PREVAIL ALONG WITH A DRY NORTHWESTERLY FLOW ALOFT ALLOWING FOR DRY AND UNSEASONABLY WARMER CONDITIONS TODAY.
148 AM EDT TUE OCT 13 2015 A COLD FRONT WILL PASS THROUGH LATE TONIGHT INTO TUESDAY WITH A GOOD CHANCE OF SHOWERS. THIS WILL MARK THE TRANSITION TO A COOLER AND UNSETTLED PATTERN.
258 AM CDT TUE OCT 13 2015 With high pressure ridge in the plains, surface cyclonic flow will continue across the CWA today.
CLEAR SKIES AND WESTERLY DOWNSLOPE FLOW INCREASING THROUGH THE AFTERNOON WILL BRING TEMPERATURES INTO THE LOW 80S SOUTHE AND THE MID 70S NORTH THIS AFTERNOON.
205 AM EDT TUE OCT 13 2015 COLD FRONT PUSHES TO OUR EAST EARLY TODAY. A REINFORCING COLD FRONT THEN PUSHES SOUTHEAST WEDNESDAY.
646 AM EDT TUE OCT 13 2015 A COLD FRONT WILL MOVE THROUGH THE AREA TONIGHT FOLLOWED BY HIGH PRESSURE THROUGH LATE WEEK.
315 AM CDT TUE OCT 13 2015 AS LONGWAVE TROUGHING BECOMES WELL ESTABLISHED ACROSS THE EASTERN CONUS THROUGH THE MIDDLE OF THE WEEK.
250 AM EDT TUE OCT 13 2015 COOL AIR WILL CONTINUE TO SPREAD OVER THE AREA OVERNIGHT BEHIND A COLD FRONT WITH EARLY MORNING TEMPERATURES FALLING INTO THE MIDDLE TO UPPER 40S.
242 AM CDT TUE OCT 13 2015 UPPER LEVEL TROUGH CONTINUES TO PROGRESS EAST ACROSS THE WESTERN GREAT LAKES EARLY THIS MORNING WITH EXPANSIVE STRATUS/STRATOCUMULUS IN PLACE ACROSS MOST OF THE FORECAST AREA. WITH THE LOW EXITING TO THE EAST AND THE HIGH BUILDING IN FROM THE WEST. THE LOW STRATUS SHOULD GRADUALLY CLEAR TODAY FROM WEST TO EAST. HAVE LOWERED HIGH TEMPERATURES SLIGHTLY ALONG AND EAST OF THE MISSISSIPPI RIVER DUE TO THE LOW CLOUDS TODAY. AND BREEZY CONDITIONS ARE EXPECTED ACROSS THE REGION ON WEDNESDAY AS HIGH PRESSURE SLIDES TO THE SOUTH OF THE FORECAST AREA. A TROUGH AND COLD FRONT PUSH ACROSS THE REGION ON WEDNESDAY LOOK TO BRING A GOOD CHANCE OF SHOWERS TO THE FORECAST AREA. MUCH COOLER AIR WILL MOVE IN.
415 AM EDT TUE OCT 13 2015 A COLD FRONT MOVING INTO THE UPSTATE WILL CROSS THE FORECAST AREA TODAY. HIGH PRESSURE AND DRIER AIR WILL BUILD INTO THE REGION TONIGHT AND REMAIN DOMINANT OVER THE AREA INTO THE WEEKEND. COLD FRONT CURRENTLY MOVING INTO THE UPSTATE WILL ENTER THE WESTERN MIDLANDS OVER THE NEXT COUPLE OF HOURS AND CROSS THE MIDLANDS BY LATE AFTERNOON. TEMPERATURES THIS AFTERNOON WILL BE IN THE UPPER 70S TO LOWER 80S WITH LOWS TONIGHT IN THE LOWER TO MIDDLE 50S.
1105 PM MDT MON OCT 12 2015 HIGH PRESSURE ALOFT WILL BE ANCHORED FROM NEW MEXICO. THE ONLY CHALLENGE IN THIS PATTERN IS DETERMINING WHERE OVERNIGHT LOWS WILL GO BELOW FREEZING IN THE VALLEYS UNDER THE CLEAR SKY AND CALM WIND CONDITIONS. THE CENTRAL COLORADO RIVER BASIN AND GUNNISON VALLEY ALL HAD SEVERAL LOCATIONS AT OR BELOW FREEZING. THE LOWER YAMPA RIVER BASIN OF FAR NORTHWEST COLORADO AND THE ZONE CONTAINING PAGOSA SPRINGS WILL FLIRT WITH FREEZING TEMPS IN ISOLATED AREAS.
THE LARGE-SCALE WEATHER PATTERN FEATURES A DEEP TROUGH OVER EASTERN NORTH AMERICA EXTENDING SOUTHWARD OVER THE GULF BASIN. LARGE SUBTROPICAL ANTICYCLONES ARE CENTERED OVER MEXICO AND THE SARGASSO SEA. DEWPOINT TEMPERATURES ARE HOLDING STEADY IN THE LOWER TO MID 70S.
643 AM EDT TUE OCT 13 2015 A COLD FRONT MOVING INTO THE UPSTATE WILL CROSS THE FORECAST AREA TODAY. HIGH PRESSURE AND DRIER AIR WILL BUILD INTO THE REGION TONIGHT AND REMAIN DOMINANT OVER THE AREA INTO THE WEEKEND. COLD FRONT CURRENTLY MOVING INTO THE UPSTATE WILL ENTER THE WESTERN MIDLANDS OVER THE NEXT COUPLE OF HOURS AND CROSS THE MIDLANDS BY LATE AFTERNOON. TEMPERATURES THIS AFTERNOON WILL BE IN THE UPPER 70S TO LOWER 80S WITH LOWS TONIGHT IN THE LOWER TO MIDDLE 50S.
SUPPORTING HIGHS IN THE LOWER TO MID 70S F GIVEN MIXING TO AT LEAST 750-MB PER MODEL-FORECAST SOUNDING PROFILES. WINDS ARE WITH THE HIGHEST GUSTS AROUND 30 MPH NEAR LIVINGSTON. WITH UPPER 30S F LIKELY IN THE LOWER-LYING AREAS OF SOUTHEASTERN MT LIKE BAKER. THAT IS BASED ON THE WARMER EDGE OF THE 00 UTC GUIDANCE THAT WE GENERALLY LEANED ON FOR DAYTIME HIGHS AND HUMIDITY VALUES FOR BOTH TODAY AND WEDNESDAY GIVEN A DRY AND WELL- MIXED BOUNDARY LAYER AND RECENTLY-OBSERVED MODEL BIASES.
539 AM EDT TUE OCT 13 2015 THE PASSAGE OF THE COLD FRONT TODAY WILL BRING MOSTLY BELOW AVERAGE TEMPERATURES THROUGH THE WEEKEND. FORECAST IS ON TRACK AS AREA OF SHOWERS MOVE THROUGH THE FAR EASTERN COUNTIES OF THE FORECAST AREA WHILE THE PRIMARY COLD FRONT LAGS BEHIND IN CENTRAL OHIO. RELATIVE CLEARING IS EXPECTED BEHIND THE FRONT IN THE MORNING AS DRY AIR ENTERS THE REGION BUT THE PASSAGE OF THE TROUGH AXIS AROUND MIDDAY WILL REINFORCE COLD ADVECTION VIA NORTHWEST FLOW TO ALLOW STRATOCU DECK TO COVER THE REGION. CONTINUOUS TROUGHING AND COLD ADVECTION ACROSS THE REGION WILL HELP SUPPORT A STRATOCU DECK THROUGH WEDNESDAY EVENING. WEAK UPPER IMPULSES PASSING THROUGH THE MAIN TROUGH MAY BRING LOW CHANCE SHOWERS FOR THE REGION NORTH OF I-80.
1234 AM CDT TUE OCT 13 2015 A cold front pushed through the area last evening. /issued 158 PM CDT MON OCT 12 2015/ A dry cold front moving through the forecast area is resulting in gusty northerly winds, with a few locations seeing 25-30 mph sustained and gusts around 40-45 mph. Expect more of the same through the rest of the week as an ua ridge remains over the region. We could see showers and thunderstorms then, but models are divided on whether a weak ua trough makes it here or not.
235 AM EDT TUE OCT 13 2015 A COLD FRONT WILL MOVE THROUGH THE AREA TONIGHT FOLLOWED BY HIGH PRESSURE THROUGH LATE WEEK.
AS WINDS SHIFT TO THE WEST AND NORTHWEST BEHIND A DEPARTING AREA OF LOW PRESSURE ALOFT. DRIER AND COOLER AIR WILL FILTER INTO THE REGION. AS A SMALL WAVE OF LOW PRESSURE MOVES OUT OF THE WESTERN GREAT LAKES REGION AND ACROSS THE OHIO VALLEY THROUGH EARLY TOMORROW MORNING. OVERNIGHT LOWS SHOULD ALSO DROP TO NEAR NORMAL VALUES ALONG OUR RIDGE TOPS.
356 AM EDT TUE OCT 13 2015 A COLD FRONT WILL PUSH TO THE EAST TODAY.
214 AM PDT TUE OCT 13 2015 After the passage of a weak weather disturbance expect increased sunshine with warmer and drier weather for the rest of the work week.
635 AM EDT TUE OCT 13 2015 A COLD FRONT WILL PASS THROUGH TODAY WITH A GOOD CHANCE OF SHOWERS. MARKING THE TRANSITION TO A COOLER AND UNSETTLED PATTERN FOR THE NEXT SEVERAL DAYS.
CLOSER TO LAKE MICHIGAN TEMPS WILL LIKELY BE A FEW DEGREES WARMER IN THE UPR 40S TO ARND 50. THEN AS THE LOW CENTERED NORTHEAST OF LAKE HURON CONTINUES TO PULL AWAY FROM THE GREAT LAKES. EXPECT TEMPS TO HOVER IN THE UPPER 50S AND MAY NUDGE TO THE LOW 60S ALONG AND SOUTH OF I-80 BY LATE IN THE AFTERNOON. THE 500MB TROUGH AXIS WILL QUICKLY PIVOT EAST WITH BROAD SFC RIDGING STRETCHING FROM THE NORTHERN PLAINS TO THE TENN VALLEY ARRIVING. WITH HIGHS WED WARMING INTO THE LOWER TO MIDDLE 60S AS SFC WINDS BEGIN TO TURN WESTERLY AND SOUTHWESTERLY. BEACHLER 244 AM CDT HIGH AMPLITUDE RIDGING PERSISTS ACROSS THE PACIFIC NORTHWEST THUR/FRI. WHICH WILL AID IN THE DEVELOPMENT OF A TROUGH AND POCKET OF MUCH COOLER AIR FOR THE GREAT LAKES HEADING INTO THE WEEKEND.
THE COLD FRONT WILL MOVE SOUTHEAST OF THE AREA THIS MORNING AND THERE COULD BE A FEW SHOWERS EARLY BEFORE MOVING EAST BY NOON. LITTLE WILL CHANGE WEDNESDAY NIGHT UNDER HIGH PRESSURE RIDGING. WITH SLIGHTLY WARMER OVERNIGHT LOWS IN THE UPPER 40S AND LOW 50S.
THE LEADING EDGE OF A COLD FRONT HAS CLEARED MOST OF THE AREA THIS AFTERNOON. THE CAUSE OF THE CHANGING AIR MASS IS A CLOSED UPPER LEVEL LOW NEAR LAKE SUPERIOR. THE UPPER LOW WILL MOVE EAST TO LAKE HURON BY DAYBREAK TUESDAY. WITH THE UPPER LOW WELL NORTH. EXPECT WINDS TO INCREASE THIS AFTERNOON AND CONTINUE ON THE BACK SIDE OF THE LOW THIS EVENING. SLIGHTLY BREEZY AND MUCH COOLER CONDITIONS WILL BE PREVALENT. EXPECT UPPER RIDGING TO BE IN PLACE ACROSS THE WESTERN CONUS WITH TROUGHING ACROSS THE EAST LEAVING NORTHERN ILLINOIS AND NORTHWEST INDIANA UNDER NORTHWEST FLOW ALOFT.
547 AM EDT TUE OCT 13 2015 COOL AIR WILL CONTINUE TO SPREAD OVER THE AREA EARLY THIS MORNING BEHIND A COLD FRONT.
648 AM EDT TUE OCT 13 2015 A WEAK LOW PRESSURE SYSTEM WILL MOVE NORTHEASTWARD THROUGH THE GULF OF MAINE THIS MORNING FOLLOWED BY A COLD FRONT THIS AFTERNOON AND EVENING. A SECOND COLD FRONT MOVES THROUGH ON WEDNESDAY WITH ANOTHER ROUND OF SHOWERS POSSIBLE.
Expect another round of showers and isolated storms to develop later today along the cold front. VFR will prevail at all sites away from the approaching cold front.
COLD FRONT IS MOVING THROUGH SOUTH CENTRAL TEXAS OVERNIGHT WHICH WILL RESULT IN AN EVENTUAL WIND SHIFT AT KAUS AND KSAT/KSSF WITHIN THE FIRST FEW HOURS OF THE PERIOD.
349 AM CDT TUE OCT 13 2015 The quiet pattern will continue across the area for the next several days as surface ridging settles into the area, bringing dry and somewhat cooler air. Helping to keep the area under dry conditions is the mid level trough, which is currently off to the east/northeast of the forecast area, with NW H5 flow overhead and fairly strong mid level subsidence. While temperatures are generally pleasant across the area, and perhaps a bit cooler than the previous few days high temperatures will reflect values well above normal for the next few days. Highs will generally be in the middle to upper 70s, with a few areas in the lower 80s (mainly south of I-70).
A very weak surface pressure gradient will be in place across western Kansas today with light westerly winds becoming light north to light and variable, as weak low pressure moves into parts of southwest Kansas.
QUIET NIGHT WITH COLD FRONT RIGHT ON THE DOOR STEP. AFTER THE FRONT PUSHES THROUGH HIGH PRESSURE WILL BUILD IN BRINGING IN MUCH DRIER AIR TO THE AREA. HEADING INTO THE WEEKEND WE COULD SEE ANOTHER RE-ENFORCING COLD FRONT WHICH WILL COOL THE LL OFF A TAD ALONG WITH EVEN DRIER DEWPOINTS. A COLD FRONT WILL WORK ITS WAY THROUGH THE AREA TODAY WITH A WIND SHIFT TO THE NORTHWEST. /MEFFER/ WEAK COLD FRONT STILL LOOKING LIKE IT WILL MOVE INTO THE COASTAL WATERS TONIGHT.
/ISSUED 930 PM CDT MON OCT 12 2015/ THE COLD FRONT CONTINUES TO MOVE THROUGH ARKANSAS.
1025 PM PDT MON OCT 12 2015 After the passage of a weak weather disturbance overnight, expect increased sunshine with warmer and drier weather.
645 AM EDT TUE OCT 13 2015 THE PASSAGE OF THE COLD FRONT TODAY WILL BRING MOSTLY BELOW AVERAGE TEMPERATURES THROUGH THE WEEKEND. FORECAST IS ON TRACK AS AREA OF SHOWERS MOVE THROUGH THE FAR EASTERN COUNTIES OF THE FORECAST AREA WHILE THE PRIMARY COLD FRONT LAGS BEHIND IN CENTRAL OHIO. RELATIVE CLEARING IS EXPECTED BEHIND THE FRONT IN THE MORNING AS DRY AIR ENTERS THE REGION BUT THE PASSAGE OF THE TROUGH AXIS AROUND MIDDAY WILL REINFORCE COLD ADVECTION VIA NORTHWEST FLOW TO ALLOW STRATOCU DECK TO COVER THE REGION. CONTINUOUS TROUGHING AND COLD ADVECTION ACROSS THE REGION WILL HELP SUPPORT A STRATOCU DECK THROUGH WEDNESDAY EVENING. WEAK UPPER IMPULSES PASSING THROUGH THE MAIN TROUGH MAY BRING LOW CHANCE SHOWERS FOR THE REGION NORTH OF I-80.
347 AM EDT TUE OCT 13 2015 COOL AIR WILL CONTINUE TO SPREAD OVER THE AREA EARLY THIS MORNING BEHIND A COLD FRONT WITH TEMPERATURES FALLING INTO THE MIDDLE TO UPPER 40S.
TONIGHTS MINIMUM TEMPERATURES WILL BE SIMILAR TO A FEW DEGREES WARMER THAN THIS MORNINGS READINGS.
133 AM EDT TUE OCT 13 2015 THE RIDGE OF HIGH PRESSURE RESPONSIBLE FOR OUR SEVERAL DAY STRING OF PLEASANT FALL WEATHER WILL SLIDE OFF THE EAST COAST. PAVING THE WAY FOR A COLD FRONT THAT WILL MOVE THROUGH LATE TONIGHT AND EARLY TUESDAY. LOWS WILL BE IN THE LOW-MID 50S. CFROPA TUESDAY MORNING WILL USHER IN COOLER AIR ON BRISK WESTERLY WINDS.
501 AM EDT TUE OCT 13 2015 A COLD FRONT WILL PASS THROUGH TODAY WITH A GOOD CHANCE OF SHOWERS. MARKING THE TRANSITION TO A COOLER AND UNSETTLED PATTERN FOR THE NEXT SEVERAL DAYS.
159 AM EDT TUE OCT 13 2015 LOW PRESSURE MOVES NORTHEAST JUST OFF THE MID ATLANTIC COAST OVERNIGHT. A COLD FRONT CROSSES THE AREA TUESDAY.
WINDS WILL GRADUALLY CONTINUE TO DIMINISH THROUGH 22Z THEN QUICKLY FALL OFF AS HIGH PRESSURE BUILDS IN. AS THE HIGH SETTLES OVER THE REGION TONIGHT TEMPS WILL BOTTOM OUT ACROSS THE EAST IN THE 30S. HIGH PRESSURE WILL BE SHORT LIVED AS ANOTHER AREA OF LOW PRESSURE QUICKLY APPROACHES FROM THE NORTHWEST EARLY TUESDAY. THE ADDITIONAL CLOUD COVER AND WESTERLY SFC FLOW FROM THIS SYSTEM WILL HELP KEEP TEMPS IN THE LOWER 40S ACROSS THE WEST. THEN HIGH PRESSURE WILL MOVE IN AGAIN FOR TUESDAY NIGHT AND WEDNESDAY.
255 AM PDT TUE OCT 13 2015 STRONG HIGH PRESSURE WILL REMAIN OVER NORTHEAST CALIFORNIA AND WESTERN NEVADA THROUGH MID WEEK, BRINGING WELL ABOVE AVERAGE TO NEAR RECORD HIGH TEMPERATURES ALONG WITH MAINLY LIGHT WINDS.
HIGH PRESSURE ALOFT WILL DOMINATE THROUGH WEDNESDAY AS DRY CONDITIONS REMAIN IN FORCE.
401 AM MDT TUE OCT 13 2015 A BROAD RIDGE OF HIGH PRESSURE OVER THE WESTERN US WILL DOMINATE THE WEATHER PATTERN IN THE SHORT TERM. THE RIDGE OF HIGH PRESSURE WILL RESULT IN MOSTLY SUNNY SKIES WITH UNSEASONABLY WARM AFTERNOON HIGH TEMPERATURES ACROSS THE FORECAST AREA. LOW TEMPERATURES WILL BE A FEW DEGREES WARMER THAN THIS MORNING. WITH SUB-FREEZING TEMPERATURES CONFINED TO LOCATIONS WHICH HAVE ALREADY RECEIVED A KILLING FREEZE.
310 AM EDT TUE OCT 13 2015 THE PASSAGE OF THE COLD FRONT WILL END RAIN CHANCES THIS MORNING AND BRING BELOW AVERAGE TEMPERATURES THROUGH THE WEEKEND. FORECAST IS ON TRACK AS AREA OF SHOWERS MOVE THROUGH THE EASTERN THIRD OF THE FORECAST AREA WHILE THE PRIMARY COLD FRONT LAGS BEHIND IN CENTRAL OHIO. RELATIVE CLEARING IS EXPECTED BEHIND THE FRONT IN THE MORNING AS DRY AIR ENTERS THE REGION BUT THE PASSAGE OF THE TROUGH AXIS AROUND MIDDAY WILL REINFORCE COLD ADVECTION VIA NORTHWEST FLOW TO ALLOW STRATOCU DECK TO COVER THE REGION. CONTINUOUS TROUGHING AND COLD ADVECTION ACROSS THE REGION WILL HELP SUPPORT A STRATOCU DECK THROUGH WEDNESDAY EVENING. WEAK UPPER IMPULSES PASSING THROUGH THE MAIN TROUGH MAY BRING LOW CHANCE SHOWERS FOR THE REGION NORTH OF I-80.
507 AM EDT TUE OCT 13 2015 WEAK HIGH PRESSURE REMAINS IN CONTROL WITH DRY WEATHER THROUGH THIS EVENING. A COLD FRONT WILL APPROACH TONIGHT AND MOVE ACROSS THE APPALACHIANS LATE TONIGHT INTO TUESDAY. HIGH PRESSURE WILL THEN BUILD IN BEHIND THE FRONT FOR MIDWEEK. CAN'T RULE OUT A FEW HUNDREDTHS AS FAR EAST AS THE BLUE RIDGE. EARLY MORNING CLOUDS/PRECIP IS ASSOCIATED WITH A COLD FRONT THAT EXTENDS SOUTH FROM AND AREA OF LOW PRESSURE OVER ONTARIO CANADA. THE OVERNIGHT SHOWER ACTIVITY ASSOCIATED WITH THE PREFRONTAL TROUGH.
AN UPPER-LEVEL TROUGH WILL SWING THROUGH THE SOUTHEAST. WITH AN ASSOCIATED COLD FRONT MOVING INTO NORTHERN FLORIDA BY DAY BREAK.
A FLAT HIGH PRESSURE RIDGE IS OVER THE REGION AND THE AIRMASS WILL REMAIN DRY WITH PERIODS OF HIGH CLOUD COVER.
159 PM CDT SUN SEP 6 2015 TEMPS AT 2 PM WERE RANGING FROM THE LOW 80S TO THE UPPER 80S WITH DEWPOINTS ARND 70 DEGREES. A WEAK UPPER LOW OVER THE SERN US WAS BRINGING MOISTURE OFF OF THE ATLANTIC OCEAN AND INTO THE TN VALLEY.
UPPER LOW CONTINUES TO LIFT NORTH THRU SOUTHERN SASKATCHEWAN AS OUR REGION UNDERGOES GRADUAL HEIGHT RISES.
NEAR SURFACE FLOW TURNS EASTERLY OVERNIGHT WITH RETURN FLOW AROUND THE HIGH PRESSURE AREA MOVING ACROSS THE NORTHERN PLAINS. OTHER THAN A BOUNDARY LAYER THAT NEARS SATURATION WITH THE EARLY MORNING LOW TEMPERATURES WHERE DEWPOINTS ARE IN THE LOWER TO MID 60S. AS THE HIGH SLOWLY MOVES TOWARDS THE EAST/SOUTHEAST IT WILL BRING COOLER TEMPERATURES TO THE AREA.
HEIGHTS AREA RISING BEHIND THE EXITING COLD FRONT THAT BROUGHT LIGHT RAIN TO THE NORTHERN OREGON COAST. OFFSHORE FLOW DEVELOPS OVERNIGHT AND INTENSIFIES AND SPREADS ACROSS THE EAST SIDE INTO THE WEEK AS AN UPPER RIDGE BUILDS OVER THE REGION.
WARMER AND DRIER CONDITIONS WILL PREVAIL EACH DAY ACROSS THE INTERIOR.