Aikyam-Lab/Synoptic-Bench huggingface dataset:
735 AM EDT TUE APR 12 2016 HIGH PRESSURE FROM THE UPPER MIDWEST WILL MOVE TO THE EASTERN GREAT LAKES BY WEDNESDAY. THE LONG WAVE TROUGH ALOFT WILL BE SLIDING EAST OF THE AREA THIS MORNING. GIVEN THE RIDGE AXIS BEING WELL TO THE NORTHWEST. DERIVING THE HIGH TEMPERATURE FROM THE FORECAST 850 MB TEMPS GAVE ME ONLY 40-45 AND UPSTREAM TEMPERATURES WERE IN THE 40S YESTERDAY SO THE HIGH TEMPERATURE FORECAST IS SHADED TOWARD THE LOWER GUIDANCE OR A LITTLE BELOW GUIDANCE. HIGHS IN THE LOWER/MID 50S INLAND AND MID/UPPER 40S NEAR LAKE ERIE.
/issued 421 AM CDT TUE APR 12 2016/ (Today and Tonight) Early this morning, widespread stratus has developed in wake of the surface cold front that moved through the area yesterday evening. Extensive cloud cover and a cooler airmass, will result in afternoon highs in the mid and upper 60s for much of the area, except across far southeast counties where some lower 70s are expected.
635 AM CDT TUE APR 12 2016 High pressure centered over western Iowa/southwest Minnesota will continue moving east southeast today. Cool dry conditions are expected under the influence of this high. Carney Although lows tonight should be a little warmer than the previous night, especially across northeast and central MO as well as west central IL, there may be some frost due to a clear sky, light surface wind, and lows ranging from 33-36 degrees over much of the forecast area. A quiet and dry weather pattern will continue as an upper level ridge moves slowly eastward to the central US by Wednesday, along with persistent surface ridging extending from the Great Lakes and northeastern US southwest into eastern MO.
HIGH PRESSURE CENTERED OVER SW MN EARLY THIS MORNING WILL CONTINUE TO SPREAD A VERY COOL. TEMPERATURES EARLY THIS MORNING WERE PRIMARILY IN THE 20S UNDER THE HIGH WITH DEWPOINTS ONLY IN THE TEENS. HIGH PRESSURE AND VERY DRY AIR UNDER THE NW FLOW ALOFT WILL PROVIDE FULL SUNSHINE WITH LIGHT WINDS AS THE HIGH CENTER PUSHES EAST TO THE GREAT LAKES BY EVENING. THIS WOULD BE ONLY MARGINALLY WARMER THAN YESTERDAY. IT WILL LIKELY FEEL WARMER. LIGHT SE-S WINDS WILL INCREASE THROUGH THE NIGHT AS THE SURFACE PRESSURE GRADIENT BEGINS TO TIGHTEN AHEAD OF AN EMERGING LOW PRESSURE CENTER IN THE NORTHERN PLAINS. THE ENHANCED MIXING AND LIGHT WINDS SHOULD BE ENOUGH TO LIMIT LOWS CLOSE TO GUIDANCE IN THE LOWER TO MID 30S.
ISSUED BY NATIONAL WEATHER SERVICE JACKSONVILLE FL 933 AM EDT TUE APR 12 2016 FORECAST ON TRACK AS WEAK HIGH PRESSURE RIDGE ACROSS CNTRL FLORIDA WILL DRIFT SOUTHWARD INTO THE REGION BY THIS AFTERNOON. AS THE HIGH PRESSURE SLIDES E, PRESSURE GRADIENTS WILL GRADUALLY RELAX AND ALLOW FOR WINDS TO SUBSIDE TODAY. THEREFORE, EXPECT ANOTHER COUPLE OF DAYS OF BENIGN WEATHER CONDITIONS WITH AFTERNOON HIGHS IN THE MID TO UPPER 80S ACROSS INTERIOR AND WESTERN AREAS, AND IN THE LOWER 80S NEAR THE COAST.
KEEPING TEMPERATURES IN THE NORTH A TOUCH WARMER THAN FORECAST.
AND A RIDGE BUILDING IN FROM THE WEST. WEAK TROF ACROSS THE WESTERN DAKOTAS IS SLOWLY PUSHING EAST. WITH HIGH PRESSURE OVER THE NORTHERN ROCKIES. AS RIDGE OVER THE WEST COAST SLIDES EAST ACROSS THE WESTERN CONUS AND INTO THE PLAINS BY EARLY THIS WEEKEND. UPPER RIDGE WILL BUILD ACROSS THE ROCKIES AND INTO THE NORTHERN PLAINS. UPPER LEVEL RIDGE CROSSES THE NORTHERN PLAINS. WEST TO SOUTHWEST BOUNDARY LAYER FLOW WILL BRING EVEN WARMER AIR INTO THE AREA. SOME LOCATIONS ACROSS SOUTHERN SOUTH DAKOTA COULD SEE HIGHS INTO THE LOWER 70S. SOME RAIN SHOWER ACTIVITY COULD CHANGE OVER TO SNOW AFTER MIDNIGHT ACROSS THE HIGHER ELEVATIONS OF NORTHEAST WYOMING AND THE BLACK HILLS.
924 AM EST FRI FEB 26 2016 TEMPERATURES WILL RETURN TO SEASONAL LEVELS FOR TODAY AND SATURDAY AS HIGH PRESSURE BUILDS INTO THE REGION.
QUIET CONDITIONS EXIST ACROSS SOUTHERN COLORADO EARLY THIS MORNING WITH MOSTLY CLEAR SKIES AND COOL TEMPERATURES GENERALLY IN THE LOWER TO MID 20S. BROAD NORTHWEST FLOW WILL REMAIN IN PLACE ACROSS THE REGION AS AN UPPER LEVEL RIDGE BEGINS TO MOVE OUT OF THE GREAT BASIN AND TOWARDS COLORADO. A WEAK COLD FRONT. THE HIGH PRESSURE OVER THE GREAT BASIN WILL SHIFT EAST ACROSS COLORADO TONIGHT. WARMER AIR ACROSS THE REGION SHOULD HELP KEEP OVERNIGHT LOWS A BIT WARMER WITH UPPER 20S TO LOWER 30S EXPECTED BY SATURDAY MORNING.
940 AM EST FRI FEB 26 2016 HIGH PRESSURE GRADUALLY BUILDS INTO THE REGION TODAY AND WILL BE IN CONTROL THROUGH THE WEEKEND.
959 AM CST FRI FEB 26 2016 HAVE DELAYED THE CLEARING A COUPLE OF HOURS AS THE RIDGE LINE IS A BIT SLOWER ARRIVING. AHEAD OF RIDGE THERE IS A MOIST CYCLONIC FLOW ASSOCIATED WITH THE GREAT LAKES UPPER LEVEL TROUGH KEEPING LOW STRATUS OVER THE CWA. THINK THAT THE HIGHEST TEMPS WILL BE ACROSS W. WESTERLY DOWNSLOPE WINDS FROM ROCKIES THROUGH PLAINS WILL LEAD TO SURGE OF WARMER AIR ENVELOPING THE REGION.
901 AM EST FRI FEB 26 2016 HIGH PRESSURE WILL BUILD FROM THE WEST TODAY. TEMPERATURES WILL BE COOLER THAN NORMAL. TROUGHING WILL CONTINUE TO MOVE EAST OF THE REGION AS A HIGH BUILDS FROM THE WEST.
DID ADJUST THE STARTING TIME OF THE HIGH WIND WATCH OVER THE WIND PRONE AREAS TO THE EARLY AFTN.
WEAK UPPER RIDGING TRAVERSING THE AREA THIS WEEKEND WILL MAKE FOR A VERY PLEASANT WEEKEND FOR THE END OF FEBRUARY.
14 UTC surface analysis shows an area of high pressure across Northern Louisiana with light north northwesterly flow in place across our region.
617 AM EST FRI FEB 26 2016 TEMPERATURES WILL RETURN TO SEASONAL LEVELS FOR TODAY AND SATURDAY AS HIGH PRESSURE BUILDS IN THE REGION.
AN AREA OF HIGH PRESSURE IS CENTERED IN CENTRAL OKLAHOMA. A LEE TROUGH IS BEGINNING TO DEVELOP ALONG AND EAST OF THE ROCKIES. A LARGE RIDGE OF HIGH PRESSURE IS FIRMLY IN PLACE OVER THE WESTERN UNITED STATES. A MUCH WARMER DAY IS FORECAST. IN COMBINATION WITH DRY AIR AND WARMER TEMPERATURES ALOFT. ANTICIPATE HIGH TEMPERATURES ON THE ORDER OF 15-20 DEGREES WARMER TODAY THAN YESTERDAY. DID ADJUST DEWPOINT TEMPERATURES DOWN AS A RESULT OF THE LOWER FORECAST AND BASED ON RECENT DEWPOINT TRENDS. IN PARTICULAR THE HIGHER RESOLUTION GUIDANCE. GUSTY NORTHWEST WINDS AND SLIGHTLY COOLER TEMPERATURES CAN BE EXPECTED BEHIND THIS FRONT.
UPPER AIR ANALYSIS AND IR SATELLITE IMAGERY SHOWED A TROUGH AXIS FROM HUDSON TO NORTHEAST CONUS OVER THE EASTERN SEABOARD. RIDGE AXIS WAS LOCATED OVER WESTERN CONUS AND SEVERAL DISTURBANCES OVER THE NORTHERN PACIFIC OCEAN. UPPER LEVEL RIDGE OUT WEST WILL TRACK EAST OVER THE MISSISSIPPI SATURDAY AFTERNOON AND NIGHT BUT DAMPENED.
HIGH PRESSURE AND SEASONAL CONDITIONS RETURN FOR THE WEEKEND. MODELS SHOW SOME WARM AIR ADVECTION IN THE LOW LEVELS TODAY. HIGH PRESSURE WILL GRADUALLY PUSH SOUTHEAST ON SATURDAY. AS AN AREA OF LOW PRESSURE BEGINS TO APPROACH FROM THE NORTHWEST.
335 AM PST FRI FEB 26 2016 DRY WEATHER WILL CONTINUE FOR THE NEXT SEVERAL DAYS AS A RIDGE OF HIGH PRESSURE DOMINATES THE PATTERN. THE RIDGE OF HIGH PRESSURE CURRENTLY OVER THE WEST COAST CONTINUES TO PROVIDE CLEAR AND DRY CONDITIONS. RIDGE AXIS BACK OVER THE WEST COAST SATURDAY AFTERNOON AS DRY AND WARM CONDITION CONTINUE.
As the high slides south and east. Unseasonably warm conditions are expected Saturday afternoon with highs in the lower 70s across much of Eastern Oklahoma.
AT THE SURFACE A RIDGE OF HIGH PRESSURE WAS SLIDING THROUGH THE FORECAST AREA PROVIDING QUIET WEATHER. MUCH WARMER AIR THEN PUSHES INTO THE REGION TONIGHT INTO EARLY SATURDAY MORNING WARMING FROM -8 C THIS AFTERNOON TO +6 C BY SATURDAY AFTERNOON. THERE ARE HINTS IN THE ECWMF THAT WE COULD BE A LITTLE WARMER.
820 AM MST FRI FEB 26 2016 HIGH PRESSURE WILL REMAIN THE PREDOMINANT WEATHER FEATURE THROUGH THE WEEKEND.
653 AM EST FRI FEB 26 2016 HIGH PRESSURE GRADUALLY BUILDS INTO THE REGION TODAY AND WILL BE IN CONTROL THROUGH THE WEEKEND.
FAIRLY IMPRESSIVE GIVEN BAY AND GULF SIDE WATER TEMPERATURES IN THE LOWER 70S. SURFACE OBSERVATIONS PLACE HIGH PRESSURE OVER TEXAS. THIS SYSTEM IS COUPLED WITH A BROAD AND DEEP SURFACE CYCLONE NORTH OF NEW BRUNSWICK.
NORTHWESTERLY FLOW COURTESY OF A HIGH AMPLITUDE RIDGE OVER THE SOUTHWESTERN U. ACROSS THE OKLAHOMA PANHANDLE AND POSSIBLY THROUGH THE TEXAS PANHANDLE AS WELL BEFORE LEESIDE TROUGHING BEGINS TO DEVELOP AND SHIFT WINDS OUT OF THE SOUTH FOR THE WEEKEND. AS THE UPPER LEVEL RIDGE DEAMPLIFIES.
HIGH PRESSURE AND SEASONAL CONDITIONS RETURN FOR THE WEEKEND. HIGH PRESSURE SHOULD TAKE CONTROL FROM THE WEST TODAY AND AS A RESULT. EXPECT HIGH PRESSURE WILL BE IN CONTROL TONIGHT WITH DRY CONDITIONS. LATEST GUIDANCE SUGGESTS LOWS TONIGHT SHOULD BE WARMER THAN PREVIOUSLY THOUGHT. HIGH PRESSURE WILL GRADUALLY PUSH SOUTHEAST ON SATURDAY. AS AN AREA OF LOW PRESSURE BEGINS TO APPROACH FROM THE NORTHWEST.
309 AM MST FRI FEB 26 2016 HIGH PRESSURE OVER THE WESTERN U.
MID AND HIGH CLOUD ASSOCIATED WITH AN APPROACHING COLD FRONT ARE MOVING ONSHORE THIS MORNING. THE FRONT ITSELF IS LINED UP AROUND 130W AND HAS SLOWED A BIT AS SOME WEAK LOW PRESSURE HAS FORMED ALONG IT.
628 AM EST FRI FEB 26 2016 HIGH PRESSURE INFLUENCE WILL RESULT IN A DRY FORECAST THROUGH THE SHORT TERM. WILL SEE COOLER THAN NORMAL LOWS AGAIN TONIGHT.
A COLD FRONT JUST OFFSHORE WILL SPREAD LIGHT RAIN INLAND THIS AFTERNOON BEFORE CROSSING WESTERN WASHINGTON TONIGHT. POST- FRONTAL SHOWERS WILL DIMINISH SATURDAY MORNING AS AN UPPER LEVEL RIDGE MOVES OVER THE AREA. A WEAK WARM FRONT WILL BRUSH THE AREA SATURDAY NIGHT.
SLIGHTLY COOLER TEMPERATURES CAN BE EXPECTED TODAY AS HIGH CLOUDS INCREASE AND LIGHT ONSHORE FLOW DEVELOPS. THE CURRENT IR SATELLITE IS SHOWING HIGH CLOUDS PUSHING INTO CENTRAL AND NORTHERN CALIFORNIA AHEAD OF AN APPROACHING COLD FRONT. THIS COLD FRONT IS FAIRLY MOIST WITH TOTAL PRECIPITABLE WATER VALUES RANGING BETWEEN 1.
As of 06Z, an upper level ridge is positioned above the Western United States with a long wave trough above the Eastern United States. Towards the surface, a trough of low pressure is in place across eastern Colorado with a dome of high pressure over the Southern Plains. The trough of low pressure across eastern Colorado will slide eastward today shifting winds to the west as it approaches then to the northwest behind this feature. However, this will be short lived as winds shift back to the southwest tonight as another trough of low pressure develops across eastern Colorado. Temperatures will be warmer today with highs reaching into the low to mid 60s with lows tonight dipping to around 30 degrees.
Today will be the last day of high pressure dominating the weather over the Northern Rockies. The low pressure system is still on track to move through the Northern Rockies on Saturday.
943 AM EST FRI FEB 26 2016 A DRY COLD FRONT WILL CROSS THE REGION EARLY TODAY THEN HIGH PRESSURE BUILDS IN FROM THE WEST THROUGH SATURDAY. THE HIGH WILL FOLLOWED BY A COLD FRONT MOVING THROUGH BY MIDWEEK. STRONG HIGH PRESSURE OVER EASTERN TEXAS WILL BUILD EAST THROUGH THE WEEKEND PROVIDING SEASONABLY COOL AND DRY WEATHER.
Despite the clouds, temperatures will be a bit warmer as winds shift out of the southwest this afternoon.
530 AM CST FRI FEB 26 2016 FOR 12Z TAFS /ISSUED 303 AM CST FRI FEB 26 2016/ THE AXIS OF THE TROUGH THAT BROUGHT SOME LIGHT RAIN/SNOW SHOWERS TO EASTERN PORTIONS OF THE TN VALLEY YESTERDAY EVENING IS FINALLY MOVING THROUGH. MID LEVEL CLOUDS ASSOCIATED WITH THE TROUGH AXIS HAVE HELPED TO KEEP TEMPERATURES UP SO FAR TONIGHT. HOWEVER, LATEST SATELLITE IMAGERY SHOWS CLEARING TO OUR NORTHWEST AND FOR LOCATIONS THAT HAVE CLEARED TEMPS QUICKLY DROP DOWN TO NEAR FREEZING. AS WE PROGRESS THROUGH THE UPCOMING WEEKEND A UPPER LEVEL RIDGE MOVES OVER THE REGION AND WITH WINDS BECOMING MORE SOUTHERLY, TEMPS ARE FORECAST TO WARM EACH DAY.
404 AM CST FRI FEB 26 2016 A PLEASANT DAY IS IN STORE ACROSS THE REGION AS RIDGING EXPANDS EASTWARD INTO THE PLAINS. TEMPERATURES WILL RISE INTO THE 40S EAST OF THE JAMES RIVER AND THE LOW TO MID 50S TO THE WEST. FOLLOWED THE WARMER BCCONSMOS GUIDANCE FOR HIGHS. THE CROSS BARRIER FLOW OVER THE BUFFALO RIDGE WILL ELEVATE WINDS CLOSER TO 15 TO 20 KT OVERNIGHT.
AN UPPER LEVEL TROUGH AXIS WILL CROSS THE AREA TODAY AND BRING WITH IT A SECOND SHOT OF COLD AIR ADVECTION. BRINING HIGH TEMPS INTO THE LOWER 50S FOR MOST LOCATIONS. MODERATION OF THE LOW TEMPERATURES ON SATURDAY NIGHT WILL GET LOWS AT LEAST BACK INTO THE LOWER 30S BUT STILL BELOW NORMAL. WHICH DRAGS A ALTHOUGH THIS FRONT AND MUCH OF ITS MARGINALLY COOLER AIR IS LIKELY TO HOLD NORTH OF NC. WITH SURFACE COLD FRONTAL PASSAGE THROUGH CENTRAL NC WED MORNING (ECMWF) OR WED EVENING (GFS). THE OP GFS AGREES FAIRLY WELL WITH THE GEFS MEAN REGARDING TROUGH/FRONT SPEED. SO EXPECT COOLER AND DRIER WEATHER FOR THU. IN THE LOWER TO MID 50S.
458 AM CST FRI FEB 26 2016 CLEAR SKIES AND NEAR CALM WINDS RESULTING IN SUB-FREEZING TEMPS NORTH OF INTERSTATE 20 THIS MORNING WHILE READINGS HAVE FALLEN INTO THE LOW TO MID 30S ELSEWHERE.
MIDLEVEL CLOUDS WILL BEGIN TO INCREASE THIS EVENING AHEAD OF AN APPROCHING UPPER LEVEL TROUGH.
545 AM CST FRI FEB 26 2016 A PLEASANT DAY IS IN STORE ACROSS THE REGION AS RIDGING EXPANDS EASTWARD INTO THE PLAINS. TEMPERATURES WILL RISE INTO THE 40S EAST OF THE JAMES RIVER AND THE LOW TO MID 50S TO THE WEST. FOLLOWED THE WARMER BCCONSMOS GUIDANCE FOR HIGHS. THE CROSS BARRIER FLOW OVER THE BUFFALO RIDGE WILL ELEVATE WINDS CLOSER TO 15 TO 20 KT OVERNIGHT.
632 AM EST FRI FEB 26 2016 HIGH PRESSURE OVER THE WESTERN GULF STATES WILL BUILD EASTWARD AND DOMINATE THE REGION THROUGH THE WEEKEND.
HIGH PRESSURE AXIS FROM KANSAS TO TEXAS MOVES EAST ACROSS THE FORECAST AREA TODAY AND TONIGHT. OVERNIGHT LOWS DOWN TO AT/OR A FEW DEGREES BELOW FREEZING OVER THE INTERIOR.
SOME LIGHT SNOW SHOWERS AND FLURRIES WILL CONTINUE OVER THE HIGH TERRAIN THROUGH ABOUT EARLY AFTERNOON. CHATTANOOGA AIRPORT, TN 49 32 57 36 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 44 29 53 34 / 0 0 0 0 OAK RIDGE, TN 45 30 53 35 / 0 0 0 0 TRI CITIES AIRPORT, TN 37 25 47 29 / 10 0 0 0.
/ISSUED 346 AM CST FRI FEB 26 2016/ THE REGION WILL BE UNDER NORTHWESTERLY FLOW ALOFT TODAY AND TONIGHT AHEAD OF OF A RIDGE. WINDS WILL INCREASE TO AROUND 15 KNOTS AS A FAIRLY WEAK SURFACE TROF PUSHES IN FROM THE NORTH HELPING TO INCREASE THE SURFACE PRESSURE GRADIENT. WINDS BEHIND THE TROF WILL SHIFT TO THE NORTH. HOWEVER THE TROF SHOULD ONLY MAKE IT AS FAR SOUTH AS THE SOUTHERN TX PANHANDLE BY THE LATE AFTERNOON/EARLY EVENING BEFORE IT FIZZLES AS A STRONGER LEE TROF BEGINS TO DEVELOP ALONG THE FOOTHILLS OF THE CENTRAL ROCKIES WHICH WILL BACK WINDS TO MORE OF A SOUTHERLY DIRECTION ACROSS THE FA.
/ISSUED 349 AM CST FRI FEB 26 2016/ UPPER LEVEL TROUGHING REMAINS IN PLACE ACROSS THE EASTERN HALF OF THE UNITED STATES WITH NORTHWEST FLOW REMAINING OVER THE MID SOUTH. HIGH PRESSURE CONTINUES TO BUILD IN AND WILL PROVIDE DRY WEATHER CONDITIONS ALONG WITH CONTINUED COOL AFTERNOON TEMPERATURES TODAY.
HIGH PRESSURE WILL REMAIN ACROSS THE WEST THROUGH FRIDAY.
MOSTLY SUNNY AND WARMER WITH RETURN FLOW BY THE AFTERNOON AS HIGH PRESSURE ADVANCES EAST INTO THE NORTH CENTRAL GULF. WEAK UPPER RIDGING TRAVERSING THE AREA THIS WEEKEND WILL MAKE FOR A VERY PLEASANT WEEKEND FOR THE END OF FEBRUARY.
AND WARMER. WENT WITH THE HIGHER SIDE OF GUIDANCE HIGHS. SATURDAY WILL BE BREEZY AND WARMER.
/ISSUED 458 AM CST FRI FEB 26 2016/ CLEAR SKIES AND NEAR CALM WINDS RESULTING IN SUB-FREEZING TEMPS NORTH OF INTERSTATE 20 THIS MORNING WHILE READINGS HAVE FALLEN INTO THE LOW TO MID 30S ELSEWHERE.
EXPECT VFR CONDITIONS TO PREVAIL ACROSS THE RIO GRANDE VALLEY AND THE NORTHERN RANCHLANDS TODAY AS HIGH PRESSURE PREVAILS ACROSS EAST TEXAS THIS AFTERNOON. 500MB RIDGE ACROSS THE WESTERN UNITED STATES AND 500MB TROUGH ACROSS THE EASTERN U. WILL CONTINUE TO PROVIDE WEST TO NORTHWEST FLOW ALOFT ACROSS TEXAS TODAY INTO SATURDAY AS THE UPPER RIDGE MOVES ACROSS THE CENTRAL UNITED STATES.
TONIGHT-SAT: RAPID/LOW AMPLITUDE SYSTEM WILL ALLOW RIDGE AXIS TO MOVE ACROSS THE AREA TONIGHT. -HOWERTON FOCUS IS TIMING ARVL & PASSAGE OF A WEAK SFC TROF THAT'LL MOVE SE ACRS KS TODAY. THE TROF SHUD CROSS CNTRL KS MID-LATE MRNG & SC KS MID-LATE AFTN.
THERE SHOULD NOT BE TOO MUCH MORE ACTIVITY FOR THE REMAINDER OF THE NIGHT AS ECHOES ARE QUITE WEAK AND STRONG NORTHWEST FLOW WILL MOVE IN BEHIND THE TROUGH TODAY.
950 AM EST FRI FEB 26 2016 HIGH PRESSURE GRADUALLY BUILDS INTO THE REGION TODAY AND WILL BE IN CONTROL THROUGH THE WEEKEND.
Temperatures a bit more tricky as wave aloft brings a colder pool of mid level temps to mix into, and will carry high temperatures just a few degrees cooler in the eastern counties, with lower 50s east to upper 50s west.
657 AM EST FRI FEB 26 2016 STRONG NORTHWEST WINDS WILL CONTINUE TO GENERATE UPSLOPE SNOW SHOWERS WEST OF THE BLUE RIDGE THROUGH THIS MORNING. HIGH PRESSURE BUILDS TONIGHT.
UPPER RIDGE AXIS SHIFTS EASTWARD TODAY OPENING AREA UP TO SOUTHWEST FLOW ALOFT. A QUICK MOVING SHORT WAVE TROUGH WILL TRACK ACROSS SE OREGON AND SW IDAHO BY SATURDAY AFTERNOON.
DRY NWLY FLOW ALOFT WILL CONTINUE IN THE SHORT TERM AS AN UPPER RIDGE OVER THE WRN US DAMPENS AS IT MOVES EAST THROUGH SATURDAY.
HIGH PRESSURE WILL BUILD IN TODAY AND SATURDAY PROVIDING QUIET WEATHER. HIGHS TODAY WILL BE IN THE LOWER 30S.
AS LEE TROUGHING INTENSIFIES OVERNIGHT AND SATURDAY. BY TONIGHT THE CENTER OF THE HIGH WILL MOVE EAST AND SOUTHERLY FLOW WILL RETURN SLOWLY PULLING SOME MOISTURE NORTHWARD. HIGHS ON SATURDAY SHOULD CLIMB TO THE LOW/MID 70S WITH BREEZY SOUTHERLY WINDS.
1017 AM EST FRI FEB 26 2016 HIGH PRESSURE OVER THE WESTERN GULF STATES WILL BUILD EASTWARD AND DOMINATE THE REGION THROUGH THE WEEKEND.
A COLD FRONT AND UPPER LEVEL TROUGH OF LOW PRES WILLAPPROACH THE COAST TODAY AND MOVE THROUGH THE REGION TONIGHT. A RIDGE OF HIGH PRES WILL FOLLOW SAT. UPPER TROUGH WAS ALONG 135 W EARLY THIS MORNING. MODELS HAVE CONTINUED TO SLOW THE EASTWARD PROGRESSION OF THE TROUGH AND SURFACE FRONT. ALTHOUGH THE MOST ENERGETIC PART OF THE UPPER TROUGH APPEARS TO PASS TO THE S OF THE FORECAST AREA. CROSS SECTIONS CONTINUE TO SHOW DEEP MOISTURE WITH THE TROUGH MAXIMIZED THIS EVENING SO WILL KEEP WITH CATEGORICAL POPS THIS EVENING. LOW LEVEL ONSHORE FLOW FOLLOWS THE FRONT LATER TONIGHT COUPLED WITH THE UPPER TROUGH TO KEEP THE CHANCES FOR SHOWERS HIGH LATER TONIGHT. NEXT COLD FRONT AND UPPER TROUGH GENERALLY AGREED UPON BY MODELS TO REACH THE COAST SUN MORNING.
THINK THAT THE HIGHEST TEMPS WILL BE ACROSS W. WESTERLY DOWNSLOPE WINDS FROM ROCKIES THROUGH PLAINS WILL LEAD TO SURGE OF WARMER AIR ENVELOPING THE REGION.
HIGH PRESSURE WILL REMAIN THE PREDOMINANT WEATHER FEATURE THROUGH THE WEEKEND.
259 PM CDT WED SEP 30 2015 High pressure continues to build into the region behind the exiting front now over the Gulf Coast.
123 PM EDT WED SEP 30 2015 COOLER AND DRIER AIR WILL CONTINUE TO FILTER INTO THE REGION TODAY BEHIND A FRONT.
A SECOND LOW PRESSURE SYSTEM IS FORECAST TO MOVE INTO NEVADA OVER THE WEEKEND WITH ADDITIONAL SHOWER ACTIVITY AND MUCH COOLER WEATHER. A PERIOD OF HEAVY RAIN IS LIKELY EARLY THURSDAY MORNING AS THE LOW OFF THE CA COAST, UPPER JET AND FRONTAL BAND COME INTO LINE OVER THE NORTHERN SIERRA. THE FRONT WILL PASS THROUGH WESTERN NEVADA WITH PRECIPITATION ENDING BY THURSDAY EVENING AS THE LOW TRACKS INTO CENTRAL NEVADA. IN THE LOWER ELEVATIONS OF WESTERN NEVADA, RAINFALL AMOUNTS UP TO 0.
Today will be the last day with a ridge firmly in place over western Montana and central Idaho before southwesterly flow develops ahead of a deep trough moving in from the Pacific coast. Thursday, the southwest flow pattern will bring an increase in atmospheric moisture, and lead to cooler temperatures, clouds, and rain for southwest Montana and central Idaho.
314 PM EDT WED SEP 30 2015 COOLER NORTH LOW LEVEL FLOW VEERS TO NORTHEAST OVERNIGHT. PLENTY OF LINGERING MOISTURE WITH MAIN TROF AXIS STILL TO OUR WEST.
Only feature that will help keep temps warmer will be the wind. Still, have trended to the cooler guidance. At most it seems may provide additional cloud cover, stronger winds and therefore, cooler temps. Regardless, latest guidance suggests a trof and associated sfc wave/fnt bringing a chance for precip late Tues into Wed. AVIATION: (For the 18z TAFs through 18z Thursday Afternoon) STRATUS HAS CLEARED SOUTH OF ALL THE TERMINALS AND HIGH PRESSURE WAS BUILDING INTO THE AREA.
CURRENTLY TEMPERATURES ARE RUNNING ABOUT 5 TO 10 DEGREES COOLER THAN YESTERDAY WITH SOME PLACES ABOUT 15 DEGREES COOLER DUE TO NOT ONLY THE APPROACHING TROUGH BUT ALSO THE CLOUD COVER. THE UPPER LOW PRESSURE TROUGH WILL CONTINUE TO APPROACH THE AREA THIS AFTERNOON. THIS SHOULD KEEP OVERNIGHT TEMPERATURES WARMER THAN LAST NIGHT AND HAVE NUDGED UP MINIMUM TEMPERATURES FOR TONIGHT. THE UPPER TROUGH MOVES OVERHEAD THURSDAY AFTERNOON AND SHOWERS WILL CONTINUE MAINLY EAST OF THE CASCADES THROUGH THURSDAY EVENING.
630 PM EDT WED SEP 30 2015 AN AREA OF LOW PRESSURE MOVING INTO NEW ENGLAND WILL BE FOLLOWED BY WEAK HIGH PRESSURE.
330 PM EDT WED SEP 30 2015 CURRENT CONDITIONS ACROSS THE AREA FEATURE AN UPPER LEVEL LOW GRADUALLY MAKINGS ITS WAY ENE. A STRONG PIECE OF UPPER LEVEL ENERGY WILL DIVE SEWD AND DEEPEN THE UPPER LEVEL TROUGH STRETCHING ACROSS KY. LOWS TONIGHT MAY REACH THE UPPER 50S BUT THE HIGHS TOMORROW WILL STRUGGLE TO GET MUCH ABOVE THE 60 DEGREE MARK. SHOULD BE DOMINATED AN UPPER LEVEL LOW MEANDERING ACROSS THE SOUTHEAST CONUS AND A FEED OF ATLANTIC MOISTURE WEST. SOME MOISTURE FROM TROPICAL CYCLONE JOAQUIN MAY REACH WEST ACROSS THE APPALACHIANS AT SOME POINT OVER THE WEEKEND.
352 PM CDT WED SEP 30 2015 UPPER LEVEL RIDGING ACROSS THE ROCKIES DRIFTS INTO THE HIGH PLAINS TONIGHT AND THURSDAY. THEREFORE FOLLOWED THE COOLER SIDE OF GUIDANCE NUMBERS.
A SHORT WAVE WILL MOVE SOUTHEAST OUT OF THE PLAINS AND PUSH A DRY COLD FRONT ACROSS THE FORECAST AREA TODAY. A DRY COLD FRONT WILL PUSH THROUGH THIS MORNING. LOWER HUMIDITIES MOSTLY CLEAR SKIES WILL EXTEND THROUGH THE WEEKEND WITH HIGH PRESSURE RIDGING IN FROM THE NORTHWEST. NORTHERLY WINDS WILL INCREASE TO MODERATE LEVELS OFF THE COAST BEGINNING TONIGHT IN THE WAKE OF THE COLD FRONT.
252 PM EDT WED SEP 30 2015 AN UPPER LEVEL TROUGH AND A MOIST ATMOSPHERE WILL CONTINUE TO AFFECT OUR REGION INTO THE WEEKEND. EXPECT SCATTERED SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THROUGH TONIGHT AS A COLD FRONT CROSSES THE AREA.
1224 PM CDT WED SEP 30 2015 FOR 18Z TAFS /ISSUED 1044 AM CDT WED SEP 30 2015/ OVERCAST TO BROKEN LOW CLOUDS STILL LINGER AROUND THE TN VALLEY THIS MORNING WITH TEMPS HOLDING IN THE LOWER 70S. WATER VAPOR SATELLITE SHOWS AN UPPER LEVEL LOW SPINNING ACROSS KY WITH THE TROUGH AXIS EXTENDING THROUGH THE SOUTHEAST. A SFC COLD FRONT STRETCHES FROM THE NORTHEAST BACK INTO NORTH TX. WINDS HAVE ALREADY BECOME NORTHERLY ACROSS THE CWA BUT DEWPOINTS ARE STILL IN THE MID 60S HERE AND A REAL DROP IS BEHIND THE COLD FRONT IN NORTHERN TN. A COLD FRONT WILL CONTINUE MOVING THROUGH THIS AFTERNOON AND THERE IS A CHANCE CLOUDS MAY GO SCATTERED BRIEFLY BUT CONFIDENCE IS TOO LOW TO INCLUDE IN THE TAFS.
201 PM EDT WED SEP 30 2015 AN AREA OF LOW PRESSURE MOVING INTO NEW ENGLAND WILL BE FOLLOWED BY WEAK HIGH PRESSURE.
HIGH PRESSURE WILL PROVIDE DRY CONDITIONS INTO THURSDAY NIGHT.
/ISSUED 303 AM CDT WED SEP 30 2015/ The backdoor cold front has pushed into southeast Oklahoma. Expect cooler morning and afternoon temperatures the next couple of days.
408 PM EDT WED SEP 30 2015 LOW PRESSURE OVER THE GULF OF MAINE WILL EXIT INTO THE MARITIMES TONIGHT. HIGH PRESSURE FROM CENTRAL CANADA WILL BUILD EASTWARD NORTH OF MAINE THURSDAY INTO THE WEEKEND. COOLER AND BREEZY CONDITIONS CONT ON THU WELL BEHIND THE LOW DEPARTING THRU THE MARITIMES AND AHEAD OF SFC HI PRES BUILDING SE FROM N CNTRL CAN WITH PTLY TO MSLY SUNNY SKIES N AND PTLY TO MSLY CLDY SKIES OVR CNTRL AND DOWNEAST AREAS.
1214 PM CDT WED SEP 30 2015 LATEST WATER VAPOR IMAGERY AND RAP 500MB HEIGHT ANALYSIS SHOWS LARGE RIDGE OF HIGH PRESSURE EXTENDING FROM NORTHWESTERN MEXICO INTO BRITISH COLUMBIA/ALBERTA. A LARGE TROUGH EXTENDS FROM HUDSON'S BAY TO EASTERN TEXAS PUTTING OUR REGION IN MODEST NORTHWESTERLY FLOW. THE UPPER RIDGE AXIS WILL SHIFT EAST TOWARD THE FORECAST AREA BY THE WEEKEND AHEAD OF A LARGE APPROACHING UPPER TROUGH. TEMPERATURES WILL REMAIN COOLER THAN NORMAL FOR THIS TIME OF THE YEAR WITH CONTINUED EASTERLY LOW LEVEL FLOW.
356 PM EDT WED SEP 30 2015 AN AREA OF LOW PRESSURE MOVING INTO NEW ENGLAND WILL BE FOLLOWED BY WEAK HIGH PRESSURE.