Aikyam-Lab/Synoptic-Bench huggingface dataset:
322 AM EDT FRI JUL 10 2015 AN UPPER RIDGE OVER OUR REGION WILL LEAD TO A GENERALLY DRY AND HOT PATTERN. THE UPPER RIDGE WILL RETROGRADE WESTWARD DURING THE WEEKEND. EARLY MORNING ANALYSIS REVEALS THE UPPER RIDGE CENTERED OVER THE FORECAST AREA WITH THE CORE OF THE WESTERLIES WELL TO THE NORTH ACROSS THE OHIO VALLEY INTO NEW ENGLAND.
For Saturday and Saturday night, temperatures will be on the upswing as winds shift to southerly and weak upper level ridging tries to build in. Temperatures will climb into the lower 50s in the east and the upper 50s in the west.
SE WINDS ARE PROGD TO STRENGTHEN SAT AS LOW PRESSURE DEEPENS ALONG THE ROCKIES AND W TX.
With wind turning to the south tonight, expect low temperatures Saturday morning to be around 5 to 7 degrees warmer than they were this morning. Warmer start to the day + good warm advection = a very mild Saturday with highs in the mid 50s to low 60s across the area.
THE COMBINATION OF STRENGTHENING WINDS ALOFT AND A DEEPENING LEE SIDE TROUGH WILL RESULT IN BREEZY TO WINDY WESTERLY SFC WINDS ACROSS THE PLAINS.
/issued 339 PM CST FRI FEB 26 2016/ (Tonight and Saturday) The surface anticyclone has settled over east TX this afternoon, with southerly winds increasing to 8-12 mph across west central TX. Skies remain mostly sunny with current temperatures in the low to mid 60s. This will keep temperatures above freezing across West Central TX, with overnight lows ranging from the mid 30s in low- lying areas to the lower 40s, mainly across the Big Country. We'll maintain mostly sunny skies throughout the afternoon with temperatures warming into the lower 70s across much of the area.
615 PM EST FRI FEB 26 2016 HIGH PRESSURE BUILDS IN FROM THE WEST THROUGH SATURDAY.
MILD AND QUIET NIGHT WITH RIDGING ALOFT AND DECENT SURFACE LEE TROUGHING PRODUCING ENOUGH WIND TO KEEP TEMPERATURES ABOVE FREEZING ALONG THE INTERSTATE 25 CORRIDOR FROM DOUGLAS. PREFER THE WARMER GFS MOS HIGH TEMPERATURES OVER THE COOLER NAM. BASED ON THE LOW AND MID LEVEL GRADIENTS AND STRENGTH OF THE COLD ADVECTION BEHIND THE COLD FRONT.
705 PM EST FRI FEB 26 2016 HIGH PRESSURE WILL PASS SOUTH OF THE REGION TONIGHT.
915 PM EST FRI FEB 26 2016 HIGH PRESSURE BUILDS IN FROM THE WEST THROUGH SATURDAY.
THE APPROACHING TAIL END OF A COLD FRONT MOVING NOW MOVING INLAND OVER THE NORTHERN CALIFORNIA COAST WILL SPREAD LIGHT RAIN CHANCES SOUTHWARD INTO THE SF BAY AREA LATE THIS AFTERNOON AND FIRST PART OF THE EVENING. SATELLITE IMAGERY SHOWS THE LEADING EDGE OF APPROACHING WEAK COLD FRONTAL CLOUD BAND NOW MOVING INTO THE COAST OF FAR NORTHWESTERN SONOMA COUNTY. AND THUS RUNNING ABOUT 4 TO 6 DEG COOLER THAN YESTERDAY. LATEST MODEL OUTPUT REMAINS IN BASICALLY GOOD AGREEMENT THAT THE COLD FRONT WILL DISSIPATE AS IT PROGRESSES SOUTHEASTWARD. DRY CONDITIONS ALONG WITH CLEAR TO PARTLY CLOUDY SKIES WILL PREVAIL ON SATURDAY AS UPPER LEVEL RIDGING REDEVELOPS ALONG THE WEST COAST.
SOUTHWEST WINDS WILL BECOME GUSTY SATURDAY AFTERNOON IN RESPONSE TO A DEEPENING SURFACE PRESSURE TROUGH. DRY NWLY UPPER FLOW IS EXPECTED THROUGH THE PERIOD AS RIDGING OVER THE WEST COAST STAYS RELATIVELY IN PLACE. ONLY DAMPENED AT TIMES BY SHORT WAVE TROUGHS CRESTING IT.
633 PM EST FRI FEB 26 2016 HIGH PRESSURE OVER THE WESTERN GULF STATES WILL BUILD EASTWARD AND DOMINATE THE REGION THROUGH THE WEEKEND.
/ISSUED 224 PM EST FRI FEB 26 2016/ HIGH PRESSURE WILL CONTINUE AT THE SURFACE OVER THE CWFA THROUGH THE SHORT TERM PERIOD.
IT APPEARS THAT A FEW SHORT WAVE TROUGHS WILL MOVE NORTHWEST TO SOUTHEAST AND ACROSS CENTRAL ALABAMA TONIGHT AND SATURDAY. EXPECT LOWS AROUND FREEZING IN MOST PLACES. SFC RIDGING WILL CONTINUE TO BUILD IN FROM THE WEST WITH GENERALLY CLEAR SKIES AND LIGHT/CALM WINDS OVERNIGHT. 19 SLIGHTLY WARMER ON SATURDAY.
THE UPPER LEVEL TROUGH POSITIONED ALONG THE WEST COAST LATE THIS AFTERNOON WILL REACH NORTHERN UTAH BY EARLY SATURDAY.
BUT THE BIGGER STORY MAY BE THE GUSTY WINDS DEVELOPING OVER THE RIDGES.
TEMPERATURES HAVE REBOUNDED INTO THE LOWER 60S ACROSS MUCH OF THE AREA. LOW TEMPERATURES TONIGHT SHOULD BE A BIT WARMER WITH TEMPERATURES REACHING THE UPPER 30S TO UPPER 40S BY SUNRISE.
WEAK COLD ADVECTION STILL ONGOING SO LATEST GUIDANCE AND FORECAST LOOKS ON TRACK WITH LOWS TONIGHT IN THE LOWER TO MID 30S.
653 PM EST FRI FEB 26 2016 HIGH PRESSURE OVER THE WESTERN GULF STATES WILL BUILD EASTWARD AND DOMINATE THE REGION THROUGH THE WEEKEND.
SATURDAY MORNING LOWS WILL BE IN THE LOWER TO MIDDLE 20S. WARMER WEATHER WILL BE IN STORE FOR THE UPCOMING WEEKEND.
AND THEN NORTH NORTHWEST TO NORTHWEST IN THE LOWER LEVELS AND THEN GENERALLY WESTERLY IN THE MID AND UPPER LEVELS. HIGH PRESSURE WILL CONTINUE TO MOVE INTO THE AREA.
945 PM EST FRI FEB 26 2016 HIGH PRESSURE REMAINS ACROSS THE AREA THROUGH THE WEEKEND. SOME INLAND AREAS ALONG WITH THE PINE BARRENS DECOUPLE ALLOWING TEMPS TO FALL IN THE LOWER TEENS. USED THE WARMER GFS MOS AS THEY'VE SUBJECTIVELY BEEN VERIFYING BETTER OF LATE.
TEMPERATURES HAVE ALREADY FALLEN INTO THE LOWER TO MIDDLE 30S IN MANY AREAS. WARM ADVECTION CONTINUES SATURDAY AS THE THERMAL RIDGE PEAKS IN THE EARLY AFTERNOON. TO THE LOWER 60S MAINLY SOUTH AND WEST OF THE RIVER. STATION SATURDAY FEB 27 RECORD HIGH AND YEAR WILLISTON 66 1992 MINOT 65 1988 DICKINSON 66 1992 BISMARCK 65 1932 JAMESTOWN 60 1924 THIS WARM AIR IS AHEAD OF AN UPPER LEVEL TROUGH MOVING EAST ACROSS THE ROCKIES ON SATURDAY.
HIGH PRESSURE ACROSS THE GULF STATES WILL KEEP SKIES MAINLY CLEAR AND WINDS LIGHT OVERNIGHT. THESE FAVORABLE RADIATIONAL COOLING CONDITIONS WILL ALLOW MORNING LOWS TO DROP INTO THE LOWER 30S ACROSS MUCH OF THE AREA.
919 PM EST FRI FEB 26 2016 HIGH PRESSURE GRADUALLY BUILDS INTO THE REGION TONIGHT AND WILL BE IN CONTROL THROUGH THE WEEKEND.
1011 PM EST FRI FEB 26 2016 HIGH PRESSURE OVER THE WESTERN GULF STATES WILL BUILD EASTWARD AND DOMINATE THE REGION THROUGH THE WEEKEND.
LIGHT TO MODERATE RAIN ASSOCIATED WITH A COLD FRONT WILL TAPER OFF THIS EVENING.
WARM ADVECTION CONTINUES SATURDAY AS THE THERMAL RIDGE PEAKS IN THE EARLY AFTERNOON. TO THE LOWER 60S MAINLY SOUTH AND WEST OF THE RIVER. STATION SATURDAY FEB 27 RECORD HIGH AND YEAR WILLISTON 66 1992 MINOT 65 1988 DICKINSON 66 1992 BISMARCK 65 1932 JAMESTOWN 60 1924 THIS WARM AIR IS AHEAD OF AN UPPER LEVEL TROUGH MOVING EAST ACROSS THE ROCKIES ON SATURDAY.
Lows are expected to be in the lower to middle 30s by daybreak with the normally colder locations possibly reaching the freezing mark for about an hour.
A NORTHERLY FLOW ON THE EAST SIDE OF THE HIGH. THE FLOW ALOFT SHOULD BECOME INCREASINGLY ZONAL (AT LEAST LOCALLY) THROUGH SATURDAY AS AN UPPER-LEVEL TROUGH AXIS HEADS TOWARD THE EASTERN SEABOARD.
High pressure will set up over the northern Gulf states Fri/Sat, after precipitation free H50 short waves pushes through this evening.
HIGH PRESSURE WILL SLOWLY MOVE EAST TONIGHT. A COLD FRONT WILL MOVE THROUGH NORTHERN NEVADA ON SATURDAY TO BRING SOME RAIN AND SNOW SHOWERS.
349 PM PST FRI FEB 26 2016 Our weather pattern will become breezy at times over the weekend with chances for rain in the lowlands and accumulating snow in the mountains.
NORTHERLY FLOW FROM HIGH PRESSURE BUILDING EASTWARD ALONG THE NRN GULF COAST WILL MAINTAIN A DRY/COLD AIRMASS OVERNIGHT. HIGH PRESSURE ACROSS THE NRN GULF COAST WILL KEEP N/NW WINDS OVER THE WATERS OVERNIGHT AROUND 10 MPH.
CHATTANOOGA AIRPORT, TN 32 57 36 65 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 29 54 35 63 / 0 0 0 0 OAK RIDGE, TN 30 53 35 64 / 0 0 0 0 TRI CITIES AIRPORT, TN 25 48 31 60 / 0 0 0 0.
A COLD FRONT WILL SPREAD LIGHT RAIN INTO WESTERN WASHINGTON THROUGH THIS EVENING.
Temps Saturday afternoon are forecast to be on average about 10 degrees warmer compared to this afternoon.
207 PM PST FRI FEB 26 2016 Our weather pattern will become breezy at times over the weekend with chances for rain in the lowlands and accumulating snow in the mountains.
HIGH PRESSURE WILL CONTINUE OVER THE AREA WITH VFR CONDITIONS AT KCHA AND TYS THROUGH THE NIGHT.
DRY NORTHWEST FLOW ALOFT WILL GIVE WAY TO A FLATTENING RIDGE SLIDING OVER THE AREA TONIGHT. A COLD FRONT WILL PUSH INTO THE FORECAST AREA SATURDAY AFTERNOON. SO NOT EXPECTING LARGE ACCUMULATION OF RAIN ACROSS THE LOWER ELEVATIONS OR SNOW IN HIGHER ELEVATIONS AT THIS TIME.
HIGH PRESSURE WILL AGAIN PREVAIL ON SATURDAY WITH NICE WEATHER.
A FAST-MOVING UPPER LEVEL TROUGH IS MOVING ONSHORE THIS EVENING ALONG THE COAST OF NRN CA AND OREGON. COLD FRONT ALONG THE OREGON COAST AT 2 PM MST WILL MOVE EAST ACROSS OREGON TONIGHT AND REACH THE OR/ID BORDER AROUND 4 AM MST SATURDAY. TONIGHT WILL BE WARMER THAN PAST NIGHTS DUE TO CLOUDS AND MIXING WINDS. SATURDAY WILL BE COOLER THAN TODAY ESPECIALLY AT HIGHER ELEVATIONS. CLEARING WITH DIMINISHING WINDS SATURDAY NIGHT AS UPPER RIDGE REBUILDS BEHIND THE DEPARTING TROUGH.
TEMPERATURES CURRENTLY IN THE LOWER TO MIDDLE 40S AREAWIDE AND FORECAST TO FALL INTO THE 30S ACROSS MOST AREAS BY DAYBREAK.
KEPT MINIMUM TEMPERATURES THE SAME AS TEMPERATURE FORECAST WAS DOING WELL EXCEPT AT COTULLA WHICH IS WARMER THAN FORECAST (BUT SHOULD COME DOWN MORE AFTER MIDNIGHT TO FORECAST TEMPERATURES). SE WINDS ARE PROGD TO STRENGTHEN SAT AS LOW PRESSURE DEEPENS ALONG THE ROCKIES AND W TX.
920 PM CST FRI FEB 26 2016 HIGH PRESSURE HAS SETTLED INTO THE REGION THIS EVENING. HIGH PRESSURE WILL AGAIN PREVAIL ON SATURDAY WITH NICE WEATHER.
WITH LOWS SAT NIGHT SEVERAL DEGREES WARMER THAN TONIGHT. IN THE LOWER 30S.
954 PM CST FRI FEB 26 2016 HIGH PRESSURE REMAINS OVER THE MIDSOUTH THIS EVENING. HIGH PRESSURE WAS CENTERED OVER THE ARK-LA-TEX AREA THIS AFTERNOON. THE HIGH WILL CONTINUE TO MOVE SOUTHEAST AND REACH THE GULF COAST OVERNIGHT. WINDS WILL BE FROM THE SOUTHWEST WHICH WILL ALLOW WARMER AIR TO MOVE INTO THE REGION. TEMPERATURES WILL BE SOME 10 TO 15 DEGREES WARMER THAN TODAY WITH HIGHS MAINLY IN THE LOWER 60S.
THIS EVENING THROUGH TUESDAY NIGHT 20Z SFC ANALYSIS SHOWS LOW PRESSURE CENTERED OVER SOUTH CENTRAL SOUTH DAKOTA WITH HOT TEMPERATURES TO THE SOUTHEAST OF THE LOW AND SOMEWHAT COOLER AIR WRAPPING AROUND THE NORTH SIDE OF THE LOW AND INTO PARTS OF WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING.
559 PM CDT MON SEP 14 2015 FOR 00Z TAFS /ISSUED 249 PM CDT MON SEP 14 2015/ A LARGE AREA OF HIGH PRESSURE CENTERED ACROSS THE APPALACHIANS THIS AFTERNOON WAS PROVIDING FOR PLENTY OF SUNSHINE AND SLIGHTLY BELOW NORMAL TEMPS IN THE MID-UPPER 70S. THE HIGH PRESSURE RIDGE AXIS IS EXPECTED TO MOVE SLOWLY NORTHEAST WITH TIME THROUGH THE WEEK.
High pressure will remain centered to our east and in control of our weather through the near term.
THIS LOW WILL BE SLOW TO CLEAR AND A SECOND SURGE OF PACIFIC MOISTURE WILL FOLLOW IN ITS WAKE.
649 PM EDT MON SEP 14 2015 SKIES WILL BECOME CLEAR OVERNIGHT AS A RIDGE OF HIGH PRESSURE AT THE SURFACE AND ALOFT BUILDS NORTHEAST FROM THE OHIO VALLEY. THIS HIGH PRESSURE AREA WILL REMAIN OVER THE NORTH COUNTRY THROUGH THE END OF THIS WEEK. VERTICALLY STACKED LOW PRESSURE SYSTEM CONTINUES TO PULL AWAY FROM THE AREA THROUGH NEW BRUNSWICK AND ACROSS THE CANADIAN MARITIMES OVERNIGHT. A RIDGE OF HIGH PRESSURE AT THE SURFACE AND ALOFT WILL BUILD NORTHEAST FROM THE OHIO VALLEY OVERNIGHT WITH RIDGE AXIS REACHING NRN NY BY 12Z TUESDAY. GENERALLY LOOKING AT EARLY AM LOWS IN THE LOWER 50S. A RIDGE OF HIGH PRESSURE AT THE SURFACE AND ALOFT WILL REMAIN OVER THE NORTH COUNTRY THROUGH THE REMAINDER OF THIS WEEK.
211 PM EDT MON SEP 14 2015 HIGH PRESSURE BUILDS OVER THE LOCAL AREA THROUGH THE END OF THE WEEK.
152 PM EDT MON SEP 14 2015 COOL AND DRY HIGH PRESSURE BUILDING INTO THE REGION WILL SETTLE OVER THE MID-ATLANTIC BY MIDWEEK.
340 PM EDT MON SEP 14 2015 HIGH PRESSURE WILL EXTEND ACROSS THE REGION THROUGH THE WEEKEND. A WEAK TROUGH OF LOW PRESSURE WILL DEVELOP OFF THE SOUTHEAST U.
AS HIGH PRESSURE OVER OR JUST EAST OF COMBINED WITH RIDGING ALOFT PROVIDE DRY CONDITIONS AND CLEAR SKIES.
409 PM CDT MON SEP 14 2015 MOVING WEST TO EAST ACROSS THE CENTRAL PLAINS THE PRESSURE GRADIENT INCREASED DUE TO THE TRANSITION FROM LEE TROUGHING CENTERED OVER THE HIGH PLAINS TO HIGH PRESSURE EAST OF THE MISSISSIPPI RIVER VALLEY. THESE STRONG WINDS WILL ALLOW FOR CONVERGENCE TO INCREASE ALONG THE LEE TROUGH DURING THE AFTERNOON HOURS.
DID INCREASE THE WINDS A BIT IN THE COASTAL WATERS FOR THIS AFTERNOON AND EVENING AS A DEVELOPING COASTAL TROUGH COMBINED WITH HIGH PRESSURE OVER THE SOUTHEASTERN U. AS A DEEPENING PLAINS TROF AND BUILDING MID ATLANTIC RIDGE YIELD AN ONSHORE FLOW ACROSS THE NORTHWEST GULF COAST REGION. THIS WILL RESULT IN A RATHER ABRUPT RETURN OF LOW LEVEL MOISTURE AND WARMER TEMPERATURES. NOTABLY IN OVERNIGHT LOWS WHICH ARE EXPECTED TO BE A GOOD 10 DEGREES WARMER BY TUE MORNING.
HAVE LOWERED THE FORECAST TEMPS A FEW DEGREES OVER NORTHWESTERN SOUTH DAKOTA AND HAVE KEPT THEM A BIT WARMER IN THE WESTERLY DOWNSLOPE AREAS OVER NERN WY AND SWRN SD. UPPER RIDGE OVER THE MIDWEST SHIFTS EAST AS UPPER TROUGH OVER WESTERN CANADA DIGS OVER THE WEST COAST SWITCHING UPPER FLOW TO A SOUTHWESTERLY DIRECTION OVER THE CWA. SURFACE FRONTAL BOUNDARY WILL MOVE LITTLE WITH SLIGHTLY COOLER TEMPERATURES NORTH OF THE BOUNDARY AND WARMER TO THE SOUTH GIVEN 850-700MB WARM AIR ADVECTION. LOW PRESSURE MOVES FROM MT INTO ND WITH COOL FRONT MOVING SOUTHEAST THROUGH CWA.
249 PM EDT MON SEP 14 2015 CANADIAN HIGH PRESSURE WILL BUILD INTO NC TODAY AND REMAIN OVERHEAD THROUGH MID TO LATE WEEK. THE MODELS INDICATE AN ELONGATED TROUGH AXIS IN THE SOUTHERN STREAM WILL LIFT NE FROM THE GULF COAST STATES TOWARD THE CAROLINAS TONIGHT.
GUIDANCE SEEMED SLIGHTLY COOL GIVEN THE HIGHER WINDS AND HAVE STAYED ON HIGHER SIDE OF VALUES. BUT A SHARP LONGWAVE TROUGH IS PIVOTING OVER THE PACIFIC TOWARD THE WEST COAST.
115 PM EDT MON SEP 14 2015 AFTER LINGERING CLOUDS AND SHOWERS DEPART BY AFTERNOON, A LARGE HIGH PRESSURE SYSTEM WILL BUILD IN, TO BRING DRY WARM WEATHER, FOR MUCH OF THIS WEEK. WRAP-AROUND MOISTURE AROUND THE BACK-SIDE OF A DEEP UPPER TROUGH AXIS WILL KEEP CLOUDS OVER MUCH OF THE AREA THIS MORNING, ALONG WITH FREQUENT SHOWERS/SPRINKLES, ESPECIALLY FOR CENTRAL NY. HOWEVER, THERE IS GOOD AGREEMENT AMONGST THE LATEST RUNS OF OUR HIGH- RESOLUTION MODELS, THAT THESE SHOWERS/SPRINKLES WILL DISSIPATE RATHER QUICKLY IN THE 10 AM-1 PM TIME FRAME, AS THE ABOVE MENTIONED TROUGH FILLS, AND LIFTS OUT TO THE NORTHEAST. VERY QUIET WEATHER IS FORESEEN THIS PERIOD, AS AN EXPANSIVE RIDGE SURFACE AND ALOFT BUILDS OVER THE EASTERN STATES, IN RESPONSE TO A PERSISTENT UPPER TROUGH AXIS RESIDING FROM BRITISH COLUMBIA DOWN THE WEST COAST OF THE U.
GENERALLY ALONG THE HIGHWAY 83 CORRIDOR. THE STRONG UPPER RIDGE REMAINS IN PLACE OVER THE GREAT PLAINS. THE AMOUNT OF DRY AIR IN THE LOW LEVELS WILL LIMIT THE STORM COVERAGE. GIVEN VERY HIGH FREEZING LEVELS AND THE HIGH BASED NATURE OF THE STORMS. A LONG WAVE TROUGH WILL DIG INTO THE PACIFIC NORTHWEST.
1237 PM CDT MON SEP 14 2015 The primary forecast concern over the next several days will be the potential for isolated nocturnal convection as the LLJ continues to strengthen and shift eastward ahead of developing lee-side low pressure in the High Plains.
COASTAL TROUGH WILL REMAIN TO THE SOUTH OF THE REGION.
NEAR TERM AND SHORT TERM SECTIONS HAVE BEEN UPDATED BELOW A QUIET WEATHER PATTERN WILL STAY IN PLACE THROUGH THE REST OF THE WEEK WITH HIGH PRESSURE PRODUCING DRY WEATHER AND ABOVE AVERAGE HIGHS.
NOTICEABLY COOLER TEMPERATURES CAN BE EXPECTED AS AFTERNOON HIGH TEMPS STRUGGLE TO REACH INTO THE 70S OVER THE BASIN. MEANWHILE A TROUGH OF LOW PRESSURE WAS RESPONSIBLE FOR THE CLOUDS AND COOLER TEMPERATURES AND SOME SHOWERS COULD DEVELOP OVER THE WA/OR CASCADES AND OVER/NEAR THE WALLOWA/BLUE MOUNTAINS THIS AFTN/EVE.
551 PM EDT MON SEP 14 2015 A LARGE AREA OF HIGH PRESSURE AT THE SURFACE AND ALOFT WILL BUILD INTO THE COMMONWEALTH AND PREVAIL RIGHT INTO THIS WEEKEND. AS UPPER LOW DEPARTS AND TEMPS WARM ALOFT. TO THE L50S OVER PARTS OF THE LOWER SUSQ VALLEY. SEVERAL WAVES DIGGING THROUGH THE BASE OF A FAIRLY PROGRESSIVE WEST COAST TROUGH WILL HELP TO STEADILY AMPLIFY A DOWNSTREAM. RIDGE THAT WILL BRING ANOTHER 3-4 DAYS OF SPLENDID LATE SUMMER WEATHER. AS THIS RIDGE BUILDS AT THE SFC AND ALOFT THIS WEEK.
GENERALLY RANGING IN THE LOWER 50S. AS STRONG RIDGING CONDITIONS SFC/ ALOFT CONTINUE TO DOMINATE. RIDGING PATTERN WILL EVENTUALLY TRANSITION TO A PREDOMINATE SWLY FLOW PATTERN AS TROUGHING DEEPENS ACROSS THE WRN U. DESPITE SFC BUILDING RIDGING INFLUENCES EXPECTED AGAIN AT THE START OF NEXT WORK WEEK. SOME DISCREPANCIES IN MODEL CONCERNING DETAILS AND TIMING IN UPPER LEVEL PATTERN EVOLUTION AND ASSOCIATED TROUGHING.
519 PM EDT MON SEP 14 2015 COOL AND DRY HIGH PRESSURE BUILDING INTO THE REGION WILL SETTLE OVER THE MID-ATLANTIC BY MIDWEEK.
HIGH PRESSURE IS ANCHORED OVER THE EASTERN STATES WITH LOW PRESSURE OVER THE DAKOTAS. THERE IS A COLD FRONT EXTENDING FROM THE DAKOTAS LOW PRESSURE INTO ONTARIO. WE CAN EXPECTED ANOTHER CLEAR NIGHT WITH LOWS A LITTLE WARMER THAN LAST NIGHT. IN THE LOWER 50S IN LOW LYING AREAS ACROSS OUR EAST. CLASSIC TROUGH WEST. RIDGE EAST PATTERN CONTINUES.
EXPECT SURFACE HEATING ALONG WITH FALLING PRESSURES OUT WEST TO ALLOW THE LOW CLOUDS/FOG TO MOVE BACK WEST/DISSIPATE. CURRENT SURFACE ANALYSIS SHOWS A CLOSED LOW OVER NORTHEAST WYOMING. AND THE ASSOCIATED TROUGH EXTENDING FROM SOUTHWEST TO NORTHEAST ACROSS SOUTH DAKOTA. MEANWHILE A COOLER AIR MASS IS OOZING OUT OF NORTH DAKOTA. AND WHERE THE HIGHEST TEMPERATURES ARE FORECAST.
113 PM EDT MON SEP 14 2015 LOW PRESSURE DEPARTS TO THE NORTHEAST AS HIGH PRESSURE BUILDS TO THE SOUTHWEST TODAY.
214 PM EDT MON SEP 14 2015 LOW PRESSURE DEPARTS TO THE NORTHEAST AS HIGH PRESSURE BUILDS TO THE SOUTHWEST TODAY.
140 PM EDT MON SEP 14 2015 CANADIAN HIGH PRESSURE WILL BUILD INTO NC TODAY AND REMAIN OVERHEAD THROUGH MID TO LATE WEEK. THE MODELS INDICATE AN ELONGATED TROUGH AXIS IN THE SOUTHERN STREAM WILL LIFT NE FROM THE GULF COAST STATES TOWARD THE CAROLINAS TONIGHT. WED/THU: A WEAK WAVE LOCATED OVER COASTAL LA/MS EARLY THIS MORNING FOLLOWING THE WEAK FLOW ON THE WEST SIDE OF THE WRN ATLANTIC RIDGE. THE MID AND LOW LEVELS SHOULD REMAIN QUITE DRY GIVEN THE PERSISTENCE OF DEEP LOW LEVEL RIDGING/ SUBSIDENCE AND THE LACK OF ANY OPPORTUNITY FOR MOISTURE ADVECTION. HIGHS THU IN THE LOW- MID 80S AS THICKNESSES INCH BACK UP TOWARD NORMAL. THU NIGHT-SUN: A SPRAWLING MID LEVEL ANTICYCLONE CENTERED OVER TX WILL EXPAND NE INTO NC LATE IN THE WEEK.
With the lighter winds there, lows should dip into the lower 50s south of I-70, with mainly 60 degrees or so from about I-55 northwest. A nice stretch of late summer weather to continue the next few days across IL as high pressure to our east at surface and aloft maintains control. 1024 mb high pressure over eastern KY to shift east to near the mid Atlantic coast by sunset Tuesday, while upper level ridge builds over the Eastern U. Even warmer conditions expected Wed/Thu with highs in the low to mid 80s Wed and mid to upper 80s Thu, as surface and strong upper level ridge stay in place and continue mostly sunny days and southerly winds.
WHICH BOOSTED AFTERNOON TEMPERATURES INTO A WEAK SHORT WAVE TROUGH WILL CONTINUE TO PUSH EAST THROUGH THE REGION TONIGHT.
654 PM EDT MON SEP 14 2015 HIGH PRESSURE WILL EXTEND ACROSS THE REGION THROUGH THE WEEKEND. A WEAK TROUGH OF LOW PRESSURE WILL DEVELOP OFF THE SOUTHEAST U.
With high pressure centered near the Kentucky/Virginia border, the south-southwest wind flow has helped boost temperatures into the mid/upper 60s in many areas already. Low level southerly flow will continue to increase today across central IL as surface and upper level high pressure ridge axes move off to the east. with highs reaching the low 80s west of I-55 and the upper 70s to the east. In the shorter term, high pressure ridge builds over the east coast of the country and southerly flow continues into the region.
357 PM EDT MON SEP 14 2015 A LARGE AREA OF HIGH PRESSURE AT THE SURFACE AND ALOFT WILL BUILD INTO THE COMMONWEALTH AND PREVAIL RIGHT INTO THIS WEEKEND. IT'S A BRIGHT SUNNY AND DRY DAY ACROSS THE COMMONWEALTH AS HIGH PRESSURE NOSES IN FROM THE OHIO VALLEY. TO THE M70S ACROSS THE LOWER SUSQ VALLEY. LOWS RANGING FROM THE MID 40S OVER THE FAR NORTH TO AROUND 50 IN THE SOUTH WILL AVERAGE SEVERAL DEG COOLER THAN NORMAL. SEVERAL WAVES DIGGING THROUGH THE BASE OF A FAIRLY PROGRESSIVE WEST COAST TROUGH WILL HELP TO STEADILY AMPLIFY A DOWNSTREAM. RIDGE THAT WILL BRING ANOTHER 3-4 DAYS OF SPLENDID LATE SUMMER WEATHER. AS THIS RIDGE BUILDS AT THE SFC AND ALOFT THIS WEEK.
121 PM CDT MON SEP 14 2015 Upper ridge will build northward resulting in a continuation of unseasonably warm wx for the region. An upper trough will move ashore the NW coast the next couple of days and then move east. This trough will not be able to dislodge the ridge but will pass over the top of it. Expect little change in the day to day wx this week with few clouds and a breezy south wind due to a leeside trough over eastern CO extending down across the area.
223 PM EDT MON SEP 14 2015 AN UPPER LEVEL AREA OF LOW PRESSURE WILL DRIFT OVERHEAD TONIGHT. HIGH PRESSURE WILL REMAIN NEARLY STATIONARY JUST OFF THE EAST COAST THROUGH MUCH OF THE WORK WEEK.
525 PM EDT MON SEP 14 2015 AN UPPER LEVEL AREA OF LOW PRESSURE WILL DRIFT OVERHEAD TONIGHT. HIGH PRESSURE WILL REMAIN NEARLY STATIONARY JUST OFF THE EAST COAST THROUGH MUCH OF THE WORK WEEK.
25" ALONG THE RIO GRANDE TO AROUND 1" ALONG THE HIGHWAY 77 CORRIDOR. WE/LL GO WITH A DRY FORECAST TONIGHT ALONG WITH WARMER OVERNIGHT LOWS AS COMPARED TO THE PAST COUPLE OF DAYS.
HIGH PRESSURE RIDGE IN CONTROL OVER THE EASTERN UNITED STATES TODAY. VFR CONDITIONS EXPECTED TO CONTINUE WITH HIGH PRESSURE SUPRESSING ANY CHANCE FOR RAIN.
Additional storms will likely develop across the Panhandles and into western Oklahoma tonight as the low level jet increases, but unlike this morning, they should not move this far east before dissipating. Upper level ridging will expand across the south central United States through the latter part of this work week, bringing a general warming trend and largely dry conditions.
313 PM CDT MON SEP 14 2015 OUR DAYS OF BELOW NORMAL TEMPERATURES AND LOW HUMIDITY ARE COMING TO AN END AS THE UPPER LEVEL RIDGE MAKES A RETURN THIS WEEK. INCREASING THE LOW LEVEL MOISTURE ACROSS THE REGION. BUT LOWS WILL WARM OVER THE NEXT FEW DAYS AS THE UPPER LEVEL RIDGE REMAINS IN PLACE.
325 PM EDT MON SEP 14 2015 A LARGE HIGH PRESSURE SYSTEM WILL BUILD IN, TO BRING DRY WARM WEATHER, FOR MOST OF THE WEEK.
249 PM CDT MON SEP 14 2015 A LARGE AREA OF HIGH PRESSURE CENTERED ACROSS THE APPALACHIANS THIS AFTERNOON WAS PROVIDING FOR PLENTY OF SUNSHINE AND SLIGHTLY BELOW NORMAL TEMPS IN THE MID-UPPER 70S. THE HIGH PRESSURE RIDGE AXIS IS EXPECTED TO MOVE SLOWLY NORTHEAST WITH TIME THROUGH THE WEEK.
WITH SOME FLAT MID LEVEL AND UPPER LEVEL CLOUDS BEGINNING TO STREAM ACROSS COASTAL SECTIONS AND NORTH-CENTRAL FLORIDA AS THE LOW LEVEL FLOW BECOMES ONSHORE WITH LAYER MOISTURE INCREASING. CLOUDS WILL CONTINUE TO SLOWLY INCREASE ACROSS NE FL FROM THE SE AS ONSHORE FLOW CONTINUES AND AN INVERTED TROUGH BEGINS TO MOVE WEST TOWARDS THE COAST. LOWS TNGT WILL BE QUITE A BIT WARMER WITH INCREASING MOISTURE/CLOUD COVER. WITH READINGS RANGING FROM THE LOWER/MID 60S FOR FAR INLAND SECTIONS. WITH THE COASTAL TROUGH MOVING ONSHORE. HIGHS IN THE LOWER/MID 80S WILL PREVAIL FOR MOST AREAS. HIGH PRESSURE WILL BE CENTERED NORTH OF THE REGION. HIGH PRESSURE RIDGE WILL CONTINUE TO BE NEAR STATIONARY NORTH OF THE REGION. THE ONLY DIFFERENCES EXPECTED FROM DAY TO DAY WILL BE INFLUENCED BY ANY TROUGHING THAT COULD DEVELOP IN THIS PATTERN.
LATEST COMPUTER MODELS SHOW GOOD AGREEMENT WITH SURFACE TO MID LEVEL RIDGE OF HIGH PRESSURE SETTLING ALONG THE MID ATLANTIC COAST TONIGHT AND ESTABLISHING A RELATIVELY COOL EASTERLY FLOW THROUGH TUESDAY NIGHT. MOSTLY CLEAR SKIES AND LIGHT WIND WILL SET UP ANOTHER NIGHT OF UNSEASONABLY COOLER LOWS.
/ISSUED 1013 AM CDT MON SEP 14 2015/ SFC ANALYSIS THIS MORNING SHOWING THAT HIGH PRESSURE HAS MOVED INTO THE TN VALLEY BUT A WEAK RIDGE AXIS REMAINS ACROSS SE AR INTO CENTRAL LA AND SE TX. TEMPERATURES FOR THE MOST PART AS OF 15Z WERE RUNNING SOME 2-3 DEGREES WARMER THAN THIS TIME YESTERDAY WITH SOME HIGHER VALUES NOTED ACROSS PORTIONS OF SOUTHWEST ARKANSAS.
THANKS TO THE COOLER TEMPERATURES OVER THE RELATIVELY WARMER RIVER WATER. QUIET WEATHER WILL CONTINUE THROUGH TUESDAY, WITH DAYTIME TEMPS QUICKLY RECOVERING TO MID-SEPTEMBER NORMALS UNDER THE BUILDING RIDGE.