Aikyam-Lab/Synoptic-Bench huggingface dataset:
HEAT INDEX VALUES WILL BE IN THE LOW TO MID 90S. APPROACHING THE TN/AL BORDER REGION PER STRONG HIGH PRESSURE INFLUENCES ACROSS THE GREAT LAKES REGION PUSHING IT SWD. AS BUILDING SRN PLAINS UPPER RIDGING INFLUENCES BECOME THE PREDOMINATE WX FEATURE OF NOTE AS THE WEEKEND PROGRESSES INTO AT LEAST THE FIRST PART OF NEXT WORK WEEK. DESPITE PREVALENCE OF THESE UPPER LEVEL RIDGING INFLUENCES. AND THE MID STATE BEING ON THE ERN FRINGE OF THESE UPPER LEVEL RIDGING INFLUENCES. WITH A SLIGHTLY COOLER AIR MASS WORKING IN BEHIND WEAK SFC FRONTAL PASSAGE. DESPITE AFTERNOON TEMPS EXPECTED IN THE LOW 90S W OF PLATEAU.
1142 AM EDT WED JUL 15 2015 A TROUGH OF LOW PRESSURE WILL LINGER INLAND THIS AFTERNOON WITH HIGH PRESSURE OFFSHORE. A COLD FRONT WILL MOVE THROUGH FROM THE NORTHWEST TONIGHT.
1018 AM MDT WED JUL 15 2015 THE NEARLY CONSTANT FEATURES OF HIGH PRESSURE OVER TEXAS AND DEEP TROUGH OVER WEST COAST PERSISTS.
DRY ADVECTION AND INCREASING SUBSIDENCE WITH BUILDING HIGH PRESSURE WILL FLUSH RESIDUAL SHOWERS AND LOW CLOUDINESS SOUTHWARD TODAY. FLAT RIDGING IS FORECAST TO SUPPORT FURTHER TEMPERATURE AND HUMIDITY MODERATION. RISING HEIGHTS IN RESPONSE TO PLAINS TROUGH ARE EXPECTED TO DRIVE TEMPETURES ABOVE THE AVERAGES FOR THE BEGINNING OF THE NEW WEEK.
1155 AM EDT WED JUL 15 2015 HIGH PRESSURE CONTINUES TO BUILD ACROSS THE EAST COAST TODAY.
924 AM EDT WED JUL 15 2015 HIGH PRESSURE WILL BUILD FROM THE NORTH TONIGHT THROUGH THURSDAY.
746 AM EDT WED JUL 15 2015 A COLD FRONT WILL MOVE SOUTH ACROSS THE REGION EARLY THIS MORNING WITH A FEW LINGERING RAIN SHOWERS AND LESS HUMID AIR.
742 AM EDT WED JUL 15 2015 LOW PRESSURE WILL LINGER OVER THE DELMARVA PENINSULA TODAY. HIGH PRESSURE BUILDING SOUTHEAST FROM THE GREAT LAKES WILL BRING A DRIER WEATHER PATTERN DURING THE SECOND HALF OF THE WEEK BEFORE INCREASING HEAT AND HUMIDITY MAKE A RETURN FOR THE WEEKEND. SHOWERS DWINDLING OFF TO JUST SOME STARTIFORM RAIN UNDER THE DEPARTING UPPER LOW. HIGH PRESSURE WILL SETTLE IN FROM THE GREAT LAKES. HIGHS ON THURSDAY WILL BE IN THE M70S IN THE HIGHER ELEVATIONS TO THE L80S IN THE SERN VALLEYS. SHOWERS WILL END OVER SOUTHERN/EASTERN AREAS BY 00Z THURSDAY AS THE COLD FRONT PUSHES SEWD TOWARD THE MID ATLC COAST. ACCOMPANIED BY AN EXPANSIVE AREA OF HIGH PRESSURE MIGRATING EWD FROM SERN CANADA INTO THE N.
638 AM CDT WED JUL 15 2015 A PLEASANT DAY IN STORE FOR CENTRAL AND SOUTHEAST IL COMPLIMENTS OF WEAK HIGH PRESSURE OF 1018 MB OVER THE WESTERN GREAT LAKES WHICH DRIFTS EAST INTO LOWER MI BY 00Z/7 PM AND RIDGES INTO IL. COOLER HIGHS IN THE LOWER 80S OVER THE AREA WITH NE WINDS 5-10 MPH AND MOSTLY SUNNY SKIES WITH SCATTERED CUMULUS AND CIRRUS CLOUDS. 00Z MODELS HAVE TRENDED SLOWER AND FURTHER NORTH WITH SHORT WAVE EJECTING FROM THE CENTRAL ROCKIES OVER TOP OF UPPER LEVEL RIDGE INTO WI/NORTHERN IL THU. INCREASING SSE WINDS THU TO START TO BRING A BIT WARMER AND MORE HUMID AIR BACK INTO CENTRAL IL. HIGHS THU IN THE LOW TO MID 80S WITH WARMEST READINGS SW CWA AND DEWPOINTS CLIMBING INTO THE UPPER 60S/LOWER 70S BY THU AFTERNOON.
1249 PM EDT WED JUL 15 2015 HIGH PRESSURE WILL CONTINUE TO PROVIDE THE REGION WITH LOWER HUMIDITY AND DRY CONDITIONS THROUGH THURSDAY.
946 AM EDT WED JUL 15 2015 A TROUGH OF LOW PRESSURE WILL LINGER INLAND TODAY WITH HIGH PRESSURE OFFSHORE. A COLD FRONT WILL MOVE THROUGH FROM THE NORTHWEST TONIGHT.
703 AM EDT WED JUL 15 2015 HIGH PRESSURE WILL SETTLE INTO THE REGION WEDNESDAY. PROVIDING COOLER AND LESS HUMID CONDITIONS FOR MID WEEK. WITH LOWS THURSDAY MORNING DIPPING INTO THE LOWER TO MID 50S. STRONG INSOLATION TO OFFSET CORE OF THERMAL TROF THAT PRESENTLY EXTENDS LK HURON-NERN CWA. ONE MORE COOL/QUIET/DRY DAY ON THURSDAY WITH STAUNCH LOW LEVEL ANTICYLCONE AND THETA-E TROUGH IN PLACE. WILL MARK THE LEADING EDGE OF A VERY ABRUPT AIRMASS CHANGE AS MID/UPPER LEVEL FLOW TEMPORARILY BECOMES ZONAL AND ALLOWS ROBUST THETA-E RIDGE TO FOLD EASTWARD INTO OUR REGION.
1152 AM EDT WED JUL 15 2015 HIGH PRESSURE WILL BRIEFLY SHUNT SOME DRY AND COOLER AIR OVER THE REGION FOR TONIGHT AND THURSDAY. THE UPDATE FOR EARLY AFTERNOON INCLUDED A PRECIP PROBABILITY ADJUSTMENT TO INCLUDE SHOWERS WHICH HAVE FORMED TO THE EAST AND SOUTH OF PITTSBURGH AS A REINFORCING COLD FRONT IS PROGRESSING ACROSS THE REGION. DRY ADVECTION AND INCREASING SUBSIDENCE WITH BUILDING HIGH PRESSURE WILL FLUSH THOSE RESIDUAL SHOWERS AND LOW CLOUDINESS SOUTHWARD THIS AFTERNOON. FLAT RIDGING IS FORECAST TO SUPPORT FURTHER TEMPERATURE AND HUMIDITY MODERATION. WARM ADVECTION/RISING HEIGHTS IN RESPONSE TO PLAINS TROUGHING ARE EXPECTED TO DRIVE TEMPETURES ABOVE THE AVERAGES FOR THE BEGINNING OF THE NEW WEEK.
1253 PM EDT WED JUL 15 2015 HYDRO CANADIAN HIGH PRESSURE WILL TRACK SOUTHEASTWARD THROUGH THE GREAT LAKES REGION TODAY THROUGH THURSDAY. THIS SYSTEM WILL ACT TO KEEP TEMPERATURES COOLER THAN NORMAL AND THE WEATHER DRY.
1058 AM EDT WED JUL 15 2015 A COLD FRONT LOCATED ACROSS SOUTHEASTERN OHIO WILL CLEAR THE STATE THIS MORNING AS HIGH PRESSURE BUILDS IN FROM THE NORTH.
1014 AM EDT WED JUL 15 2015 A COLD FRONT WILL MOVE SOUTH ACROSS THE REGION EARLY THIS MORNING WITH A FEW LINGERING RAIN SHOWERS AND LESS HUMID AIR.
LATEST RUC CONFIRMING SUBSIDENCE EFFECTS FROM DYNAMIC HIGH PRESSURE FROM THE UPPER LEVELS. STRONG HIGH PRESSURE AT THE SURFACE AND ALOFT WILL MAINTAIN A DRY WEATHER PATTERN ALONG WITH VFR. AND A FEW SMALL NOCTURNAL SHOWERS TRYING TO FORM OFF THE LOWER ACADIANA COAST. LATEST WATER VAPOR IMAGERY STILL INDICATES AN UPPER LEVEL RIDGE HANGING IN OVER THE REGION WITH DRY AND SUBSIDENT AIR IN THE MID AND UPPER LEVELS. MOISTURE VALUES ARE PROGGED TO STAY ROUGHLY THE SAME FOR THE NEXT FEW DAYS AS THE MID/UPPER LEVEL RIDGE CONTINUES TO HOLD IN PLACE. MID LEVEL MOISTURE LOOKS TO REMAIN ON THE LOW SIDE WITH VALUES IN THE 30 PERCENT RANGE. PROGS HINTING AT THE MID/UPPER LEVEL RIDGE SLIGHTLY WEAKENING.
1134 AM EDT WED JUL 15 2015 HIGH PRESSURE WILL BUILD IN FROM THE NORTH TODAY INTO THURSDAY KEEPING THE WEATHER BENIGN.
WATER VAPOR SHOWS A POTENT UPPER LOW FOR THIS TIME OF YEAR SPINNING EAST ACROSS THE MID ATLANTIC THIS MORNING. REST OF THE PERIOD STAYS QUIET AS MODELS STAY IN GOOD AGREEMENT WITH HEIGHT RISES AS UPPER HIGH MEANDERS AROUND NEAR THE ARKLATEX REGION. AT THE SURFACE A HIGH PRESSURE TRAVERSES THE GREAT LAKES INTO SOUTHERN NEW ENGLAND. THE MODELS REMAIN IN GOOD AGREEMENT WITH UPPER LEVEL RIDGING BUILDING INTO THE LOWER AND MIDDLE MISSISSIPPI VALLEY THROUGH THE FIRST HALF OF THE WEEKEND. BEFORE ANOTHER TROUGH SHIFTS EAST ACROSS THE NORTHERN CONUS. SUPPRESSING THE RIDGE TO THE SOUTH AND SOUTHWEST. THERE ARE MORE MODEL DIFFERENCES WITH REGARDS TO THE STRENGTH OF THE APPROACHING TROUGH.
HIGH PRESSURE BUILDS IN. WARMER BY THE END OF THE WEEK. DID GO WITH MORE FOG 06Z TO 12Z THURSDAY IN THE COOLER TEMPERATURES AND WET GROUND/VEGETATION. AFTER HIGH PRESSURE DEPARTS INTO NEW ENGLAND ON THURSDAY. THE GOOD NEWS WILL BE THE OVERALL DRIER PERIOD IN SPITE OF LOW END POPS ENTERING THE PICTURE WITH THE APPROACH OF A COLD FRONT THAT WILL HAVE SOME DIFFICULTY PUSHING INTO SOUTHERN OHIO. MOISTURE WILL BE MORE DIFFICULT TO COME BY THROUGH THE COLUMN EVEN THOUGH SURFACE DEWPOINTS WILL BE ON THE RISE AGAIN IN THE WARMER AIRMASS.
COULD SEE ADDITIONAL THUNDERSTORM DEVELOPMENT OVER THE HIGH PLAINS AGAIN LATE THIS EVENING. THE MID LEVEL RIDGE IS PROGGED TO REMAIN SITUATED OVER THE SOUTHERN PLAINS INTO THE WEEKEND. WITH THE MAIN THERMAL RIDGE CREEPING BACK TO THE NORTH ACROSS THE FORECAST AREA FOR FRI AND POSSIBLY INTO SAT. COULD SEE THE HIGHER SURFACE DEWPOINTS IN THE LOW 70S RETURN TO THE FORECAST AREA ON FRI/SAT. ALSO THINK THAT THE FRONTS ARRIVAL WILL LEAD TO MORE SEASONAL (COOLER) TEMPS MOVING BACK SOUTH INTO THE AREA FOR SUN NIGHT THRU TUE.
928 AM EDT WED JUL 15 2015 A COLD FRONT WILL CROSS MAINE AND NEW HAMPSHIRE TODAY.
1226 PM EDT WED JUL 15 2015 A COLD FRONT LOCATED ACROSS SOUTHEASTERN OHIO WILL CLEAR THE STATE THIS MORNING AS HIGH PRESSURE BUILDS IN FROM THE NORTH.
HIGH PRESSURE RIDGING OVER SOUTHERN FLORIDA COMBINED WITH TROUGHING OVER THE EAST COAST WILL KEEP A PREDOMINANT NORTHWEST TO SOUTHWEST WIND FLOW ACROSS THE REGION. RADAR IMAGERY IS SHOWING THE HEAVIEST SHOWERS AND STORMS OVER THE NORTHERN NATURE COAST MOVING INLAND IN A WEST WHILE FARTHER SOUTH SHOWERS AND STORMS ARE STREAMING IN FROM THE GULF WATERS IN A WEST SOUTHWEST MOTION AS INFLUENCED BY THE RIDGING OVER SOUTHERN FLORIDA. THE HIGHEST CHANCES OF RAIN WILL REMAIN OVER THE NORTHERN COUNTIES AND NEAR PORT CHARLOTTE THROUGH THE AFTERNOON HOURS. TEMPERATURES ARE ALREADY WARM THIS MORNING IN THE LOW TO MID 80S AND WILL CONTINUE TO WARM UP TO THE LOW 90S BY AFTERNOON. RIDGING OVER SOUTHERN FLORIDA WILL KEEP A WEST SOUTHWEST WIND FLOW ACROSS THE REGION.
NORTH WINDS AND WIND DRIVEN SEAS WILL INCREASE OVER THE WATERS TODAY AS A SURFACE THERMAL TROUGH MOVES OVER THE COAST.
HIGH PRESSURE BUILDS IN. WARMER BY THE END OF THE WEEK. DID GO WITH MORE FOG 06Z TO 12Z THURSDAY IN THE COOLER TEMPERATURES AND WET GROUND/VEGETATION.
FOCUS WILL THEN SHIFT TO FRIDAY EVENING/OVERNIGHT AS A MUCH STRONGER WAVE OF LOW PRESSURE MOVES THROUGH THE REGION. WILL CONTINUE WITH THE HIGH CHANCES FOR PRECIP FRIDAY NIGHT WITH ACTIVITY EXITING THE AREA SATURDAY MORNING.
223 AM EDT FRI JUN 19 2015 A COLD FRONT WILL APPROACH THE NORTH COUNTRY THIS EVENING AND DROP SOUTH ACROSS THE AREA LATE TONIGHT. SKIES WILL CLEAR DURING FRIDAY AS HIGH PRESSURE BUILDS INTO THE REGION. THIS HIGH WILL REMAIN OVER THE AREA INTO SATURDAY.
DRY SURFACE COLD FRONT HAS PASSED THROUGH SWRN IDAHO AND WINDS HAVE TURNED TO WEST OR NORTHWEST AS OF 08Z. AND ABOUT TEN DEGS COOLER THAN YESTERDAY BEHIND THE FRONT. ASSOCIATED UPPER TROUGH WILL COME IN FROM THE NORTH PACIFIC TODAY AND KEEP TEMPS CLOSE TO NORMAL THROUGH SATURDAY. MIN TEMPS TONIGHT WILL BE COOLER THAN PREVIOUS NIGHTS BUT STILL NEAR NORMAL FOR MID-JUNE.
IN THE LOWER TO MID 70S. BUT STORM COVERAGE IS EXPECTED TO BE QUITE LOW DUE TO MID LEVEL RIDGING.
344 AM EDT FRI JUN 19 2015 SOME SHOWERS AND STORMS WILL AFFECT THE AREA LATE THIS AFTERNOON AND ESPECIALLY TONIGHT AS A COLD FRONT MOVES THROUGH. DRIER AND COOLER WEATHER IS EXPECTED FRIDAY AND FRIDAY NIGHT AS HIGH PRESSURE BUILDS DOWN FROM EASTERN CANADA. IT IS THIS AREA WHERE WE STILL EXPECT TO SEE SOME INITIAL SHOWERS AND POSSIBLE STORMS OVER THE NEXT FEW HOURS THROUGH THE LATE AFTERNOON INTO EARLY THIS EVENING AS THERE IS SOME CONVERGENCE ALONG THETA E RIDGE SETTING UP HERE. HIGH PRESSURE WITH CLEAR SKIES AND LIGHT WINDS MOVES IN BRIEFLY FOR FRIDAY NIGHT WITH A GOOD SET UP FOR RADIATIONAL COOLING.
157 AM EDT FRI JUN 19 2015 SOME SHOWERS AND STORMS WILL AFFECT THE AREA LATE THIS AFTERNOON AND ESPECIALLY TONIGHT AS A COLD FRONT MOVES THROUGH. DRIER AND COOLER WEATHER IS EXPECTED FRIDAY AND FRIDAY NIGHT AS HIGH PRESSURE BUILDS DOWN FROM EASTERN CANADA. IT IS THIS AREA WHERE WE STILL EXPECT TO SEE SOME INITIAL SHOWERS AND POSSIBLE STORMS OVER THE NEXT FEW HOURS THROUGH THE LATE AFTERNOON INTO EARLY THIS EVENING AS THERE IS SOME CONVERGENCE ALONG THETA E RIDGE SETTING UP HERE. HIGH PRESSURE WITH CLEAR SKIES AND LIGHT WINDS MOVES IN BRIEFLY FOR FRIDAY NIGHT WITH A GOOD SET UP FOR RADIATIONAL COOLING.
438 AM EDT FRI JUN 19 2015 A COLD FRONT WILL BECOME STATIONARY OVER THE AREA TODAY. A WEAK COLD FRONT HAD MOVED ACROSS FAR SOUTHERN LOWER MICHIGAN AND INTO FAR NORTHWEST INDIANA EARLY THIS MORNING.
250 AM CDT FRI JUN 19 2015 HIGH PRESSURE ACROSS THE AREA SHOULD PROVIDE TRANQUIL WEATHER TODAY AND INTO THE EVENING.
404 AM EDT FRI JUN 19 2015 A COLD FRONT SINKS SOUTH TODAY THROUGH THE MID ATLANTIC. A COLD FRONT WILL SLOWLY SINK TO THE SOUTH. PREVIOUSLY MENTIONED COLD FRONT REACHES SOUTHERN VA BY 12Z SAY MORNING. ATTENTION WILL THEN TURN TO THE APPROACHING REMNANTS OF TROPICAL DEPRESSION BILL AND ASSOCIATED UPPER LVL TROUGH. ENERGY FROM THE UPPER LVL TROUGH MOVING THRU AS WELL AS THE LLJ ALONG BILLS LOW STRENGTHENING WILL AID IN FURTHER DEVELOPING TSTMS. TAPERING OFF FROM WEST TO EAST AS THE LOW MOVES OFF TO THE EAST.
103 AM EDT FRI JUN 19 2015 PAIR OF COLD FRONTS DROPPING THROUGH LOWER MICHIGAN EARLIER TODAY STARTING TO CONSOLIDATE INTO ONE FEATURE OVER SOUTHERN LOWER MICHIGAN. SHOWERS/STORMS ENDING THEN A LITTLE COOLER. COLD FRONT MAKING QUICK PROGRESS DOWN THROUGH NRN LOWER MICHIGAN THIS AFTERNOON. A ALTHOUGH WITH SHALLOW COOLER AIR SPILLING INTO THE REGION. PATTERN SYNOPSIS/ANTICIPATED EVOLUTION: FAST MID/UPPER LEVEL FLOW WITH NORTHERN MICHIGAN SITTING BETWEEN BROAD SOUTHERN RIDGING AND DEEP TROUGHING NEAR HUDSON/S BAY.
312 AM PDT FRI JUN 19 2015 HIGH PRESSURE WILL CONTINUE TO BRING DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES THROUGH THE WEEKEND. HIGH PRESSURE REMAINS IN CONTROL ACROSS CENTRAL AND SOUTHERN CALIFORNIA WITH DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES EXPECTED THROUGH THE WEEKEND WITH ONLY SMALL DAY TO DAY FLUCTUATIONS IN TEMPERATURE.
355 AM EDT FRI JUN 19 2015 CLEARING SKIES WITH A DRYING TREND AS HIGH PRESSURE BUILDS INTO THE REGION TODAY.
453 AM EDT FRI JUN 19 2015 HIGH PRESSURE WILL CROSS THE LOWER GREAT LAKES TODAY IN THE WAKE OF A COLD FRONT. THIS WILL BRING A COOLER AND DRIER AIRMASS HELPING TO CLEAR OUT MORNING CLOUDS.
WV IMAGERY AND 00Z UPPER AIR ANALYSIS INDICATE A WEAK UPPER LEVEL RIDGE OF HIGH PRESSURE MOVING EASTWARD ACROSS THE INTERMOUNTAIN WEST. NEAR THE SURFACE, A WEAK LEE SIDE TROUGH OF LOW PRESSURE IS SLOWLY STRENGTHENING ACROSS EXTREME EASTERN COLORADO.
610 AM EDT FRI JUN 19 2015 AN AREA OF HIGH PRESSURE WILL BUILD OVER THE AREA THIS AFTERNOON INTO SATURDAY.
416 AM EDT FRI JUN 19 2015 A COLD FRONT CROSSING THE REGION WILL GENERATE SOME SHOWERS AND POSSIBLY AN ISOLATED THUNDERSTORM DURING THE OVERNIGHT. IN THE WAKE OF THE COLD FRONT. HIGH PRESSURE WILL THEN BRING A RETURN TO DRY WEATHER INTO SATURDAY.
THE UPPER RIDGE HAS BEEN DISPLACED TO OUR EAST AS THE REMNANTS OF BILL SLOWLY TRAVERSE THE OZARKS.
429 AM EDT FRI JUN 19 2015 A COLD FRONT WILL CROSS THE FORECAST AREA TODAY AND THEN STALL JUST TO OUR SOUTH. HIGH PRESSURE WILL BUILD IN TONIGHT AND THEN MOVE EAST SATURDAY. THE FRONT TO THE SOUTH WILL THEN MOVE BACK NORTH AS A WARM FRONT LATER ON SATURDAY.
404 AM CDT FRI JUN 19 2015 RIDGE OF HIGH PRESSURE STRETCHES FROM SOUTHERN CANADA THROUGH THE CENTRAL PLAINS EARLY THIS FRIDAY. SLIGHTLY WARMER WEST WHERE MIXING WILL BE BETTER BY AFTERNOON. 0-1KM BULK SHEAR IN THE 15 TO 20 KTS RANGE COINCIDENT WITH 0-1 KM HELICITY VALUES NEARING 150 M2/S2 IS ON THE LOWER END OF BEING SUFFICIENT FOR SUPERCELL TORNADOES WHEN COUPLED WITH EXPECTED LOW LCL HEIGHTS. WITH SFC DEWPOINTS EXPECTED TO BE IN THE LOW TO MID 70S.
ALSO AN INVERTED MID LEVEL TROUGH AXIS WAS LOCATED OVER THIS REGION.
331 AM EDT FRI JUN 19 2015 CLEARING SKIES WITH A DRYING TREND AS HIGH PRESSURE BUILDS INTO THE REGION TODAY.
333 AM EDT FRI JUN 19 2015 COLD FRONT STALLS OVER THE NORTH TODAY. A WEAK COLD FRONT SINKS SOUTH FROM THE NORTH AND STALLS OVER THE NORTHERN THIRD OF THE CWA THIS AFTERNOON. THIS COULD KEEP TEMPERATURES A LITTLE COOLER THAN YESTERDAY.
AN EASTERLY SURFACE FLOW COMBINED WITH LOW CLOUDS ACROSS THE FAR EAST HAS KEPT TEMPERATURES IN THE LOWER 60S SO FAR TODAY. SUN AND SUN NIGHT WILL BE MAINLY DRY ACROSS THE AREA AS RIDGING MOVES OVER THE AREA.
400 AM MDT FRI JUN 19 2015 ZONAL FLOW WILL REMAIN OVER THE AREA THROUGH THE NEXT 24 HOURS AS THE UPPER RIDGE OVER CO GETS FLATTENED AS ENERGY ENTERING THE PACIFIC NORTHWEST TRANSLATES ACROSS WY AND MT LATE THIS AFTERNOON THROUGH TONIGHT. LEE TROF STRENGTHS ALONG THE I-25 CORRIDOR. WHICH LEANS FORECAST TOWARDS THE SLIGHTLY COOLER SIDE OF GUIDANCE VALUES. SHOULD SEE CONDITIONS SIMILAR TO A DEGREE OR TWO WARMER. AN UPPER RIDGE OF HIGH PRESSURE BUILDS ACROSS THE DESERT SW OVER THE WEEKEND. AND 80S FOR THE HIGH VALLEYS. IS EXPECTED EACH DAY OVER THE HIGHER TERRAIN.
HIGH PRESSURE WILL KEEP GENERALLY DRY CONDITIONS ACROSS THE AREA THROUGH THE OVERNIGHT HOURS.
Friday will be cooler and the day to watch for scattered showers and thunderstorms across the northern mountains, and gusty winds combining with low relative humidity levels. A small chance of showers and thunderstorms will return for the beginning of the next work week as a weak upper level low moves over the Inland Northwest. Temperatures will remain warmer than normal for this time of year. The cold front is pushing into the Pacific NW coast, with a swath of precipitation over western WA. Cote' 06Z TAFS: A cold front will push in late tonight into Friday morning, bringing increasing middle and high clouds and a revitalization of winds.
RECENT RUNS OF THE HRRR SUGGEST A FEW STORMS MAY DRIFT SLOWLY EASTWARD INTO W/NW OK AS THE SFC/MID-LVL TROUGH GRADUALLY SHIFTS EASTWARD THROUGH SUNRISE. RIDGING OVER SOUTHERN CALIFORNIA AND THE DESERT SOUTHWEST WILL BUILD EAST.
UPPER TROF MOVING INTO THE PAC NW INCREASED THE ONSHORE FLOW USHERING IN THE COOLING. WITH SYNOPTIC COOLING FROM THE TROF COOLING THE MOUNTAINS AS WELL.
SOUTHERN HALF OF THE FA WILL HAVE THE HIGHEST CHANCE OF CONVECTION.
429 AM EDT FRI JUN 19 2015 A COLD FRONT IS MOVING THROUGH THIS MORNING WITH A FEW SHOWERS. DRY WEATHER IS EXPECTED THIS AFTERNOON INTO SATURDAY AS HIGH PRESSURE BUILDS DOWN FROM THE GREAT LAKES. THICK CLOUDS OVER THE AREA JUST AHEAD OF A COLD FRONT FROM WATERTOWN TO ERIE. COLD FRONT SHOULD BE SOUTH OF THE AREA BY NOON THEN DRIER AIR COMES IN FROM THE NORTH CLEARING THE SKIES. HIGH PRESSURE OVER THE UPPER GREAT LAKES WILL DROP IN TONIGHT THEN MOVE EAST EARLY SATURDAY.
620 AM EDT FRI JUN 19 2015 A COLD FRONT WILL CROSS THE FORECAST AREA TODAY AND THEN STALL JUST TO OUR SOUTH. HIGH PRESSURE WILL BUILD IN TONIGHT AND THEN MOVE EAST SATURDAY. THE FRONT TO THE SOUTH WILL THEN MOVE BACK NORTH AS A WARM FRONT LATER ON SATURDAY.
212 AM EDT FRI JUN 19 2015 A COLD FRONT CROSSING THE REGION WILL GENERATE SOME SHOWERS AND POSSIBLY AN ISOLATED THUNDERSTORM DURING THE OVERNIGHT. IN THE WAKE OF THE COLD FRONT. HIGH PRESSURE WILL THEN BRING A RETURN TO DRY WEATHER INTO SATURDAY.
558 AM EDT FRI JUN 19 2015 A COLD FRONT WILL BECOME STATIONARY OVER THE AREA TODAY. A WEAK COLD FRONT HAD MOVED ACROSS FAR SOUTHERN LOWER MICHIGAN AND INTO FAR NORTHWEST INDIANA EARLY THIS MORNING.
324 AM EDT FRI JUN 19 2015 A COLD FRONT WILL EXIT THE COAST EARLY FRIDAY MORNING. HIGH PRESSURE FOLLOWS THIS FRONT FOR FRIDAY AND SATURDAY.
A windy and cooler Friday is on tap. A mostly dry cold front associated with the low pressure moving across southern Canada will cause strong westerly winds aloft. Those near Logan Pass and the higher elevations will experience even windier conditions, with gusts up to 45 mph. Temperatures will be 5 to 10 degrees cooler than yesterday, which is closer to average for this time of year.
256 AM EDT FRI JUN 19 2015 A COLD FRONT WILL BECOME STATIONARY OVER THE AREA TODAY. TROPICAL PLUME FROM REMNANTS OF TS BILL BRING REINTRODUCED INTO THE AREA AHEAD OF THE MAIN COLD FRONT AND UPPER LEVEL SUPPORT. REMNANTS OF TS BILL WILL BE MOVING INTO ARKANSAS BY LATE FRIDAY AFTERNOON WITH HIGH PRESSURE HELPING SLOW ITS PROGRESS NORTH AND EVENTUALLY HELP IN TURNING MORE EAST INTO THE OHIO RIVER VALLEY.
AN AREA OF HIGH PRESSURE WILL BUILD OVER THE AREA THIS AFTERNOON INTO SATURDAY.
CLEARING AND DRY WX EXISTS ACROSS MOST OF OUR CWA AS WE ARE UNDER THE INFLUENCE OF FLAT RIDGING ALOFT. WITH PACIFIC TROF TO OUR WEST MOVING INTO WA/OR. COMBINATION OF ASCENT ASSOCIATED WITH PAC TROF. THEN UPPER 70S TO LOWER 80S SATURDAY IN MODESTLY COOLER POST- FRONTAL AIRMASS.
THE MAIN CONCERN WITH THIS FEATURE IS HOW FAR THE LOW CLOUDS WILL SPREAD INLAND. UPPER SLOPES AND RIDGES OF SW OREGON MAY NOT SEE A SIGNIFICANT IMPROVEMENT IN HUMIDITY.
613 AM EDT FRI JUN 19 2015 A COLD FRONT WILL EXIT THE COAST EARLY FRIDAY MORNING. HIGH PRESSURE FOLLOWS THIS FRONT FOR FRIDAY AND SATURDAY.
328 AM EDT FRI JUN 19 2015 A COLD FRONT WILL EXIT THE COAST EARLY FRIDAY MORNING. HIGH PRESSURE FOLLOWS THIS FRONT FOR FRIDAY AND SATURDAY.
444 AM CDT FRI JUN 19 2015 WEAKENING OF THE MID/UPPER LEVEL RIDGE OVER THE FORECAST AREA TODAY. THE BEST RAIN CHANCES TODAY AND TONIGHT WILL BE ACROSS MY NORTHERN ZONES WHICH ARE IN CLOSER PROXIMITY TO THE SOUTHERN FRINGES OF THE SURFACE AND MID/UPPER LOW FORMERLY KNOWN AS BILL. RIDGING ALOFT WILL RESTRENGTHEN ACROSS THE REGION. HIGHS WILL TOP OUT IN THE LOW TO MID 90S. AND LOWS SATURDAY NIGHT FALL INTO THE LOW AND MIDDLE 70S. MODELS CONTINUE TO SHOW GOOD CONSENSUS FOR THE SUBTROPICAL RIDGE TO EXPAND AND INTENSIFY OVER MOST OF THE SOUTHERN CONUS RESULTING IN BUILDING HEAT/HUMIDITY AND HEAT STRESS. BOTH THE GFS/ECWMF INDICATE H850 TEMPS INCREASING TO BETWEEN 20 AND 23 DEG C WITH THE ECMWF SLIGHTLY WARMER. LIGHT ANTICYCLONIC FLOW AND SUBSIDENCE ASSOCIATED WITH THE STRENGTHENING RIDGE WILL LIMIT DIURNAL CONVECTIVE DEVELOPMENT AND COVERAGE.
431 AM EDT FRI JUN 19 2015 HIGH PRESSURE AT THE SURFACE AND ALOFT HAVE SHIFTED OFFSHORE IN RESPONSE TO T. TEMPS WILL BE SOMEWHAT COOLER TODAY AND TOMORROW THAT IN PREVIOUS DAYS. AND WILL BE LEANING MORE TOWARDS THE HIGH RES SOLUTION. THE HIGH RES MODELS HAVE THE HIGHEST CHANCE OF POPS ACROSS THE NORTHERN HALF AND EASTERN CWFA. THIS IS WHERE THE HIGHEST POPS WILL BE ON SATURDAY. NLISTEMAA GUIDANCE IN DECENT CONSENSUS WITH MAIN FEATURES OF THE FCST PERIOD AS REGIME TRANSITIONS BACK TO BROAD RIDGING FROM THE WEST AND WEAK FLOW ALOFT.
654 AM EDT FRI JUN 19 2015 A COLD FRONT IS MOVING THROUGH THIS MORNING WITH A FEW SHOWERS. DRY WEATHER IS EXPECTED THIS AFTERNOON INTO SATURDAY AS HIGH PRESSURE BUILDS DOWN FROM THE GREAT LAKES. THICK CLOUDS OVER THE AREA JUST AHEAD OF A COLD FRONT FROM WATERTOWN TO ERIE. COLD FRONT SHOULD BE SOUTH OF THE AREA BY NOON THEN DRIER AIR COMES IN FROM THE NORTH CLEARING THE SKIES. HIGH PRESSURE OVER THE UPPER GREAT LAKES WILL DROP IN TONIGHT THEN MOVE EAST EARLY SATURDAY.
358 AM PDT FRI JUN 19 2015 HIGH PRESSURE ALOFT WILL PEAK ACROSS SOUTHERN CALIFORNIA TODAY AND SATURDAY.
200 AM EDT FRI JUN 19 2015 A COLD FRONT WILL DROP SOUTHEAST ACROSS THE AREA OVERNIGHT THEN WEAK HIGH PRESSURE WILL QUICKLY CROSS THE AREA ON FRIDAY.
A MOSTLY DRY COLD FRONT WILL MOVE THROUGH THE AREA TODAY. SATURDAY A WEAK SECONDARY TROUGH WILL MOVE THROUGH THE AREA KEEPING WEAK AFTERNOON THUNDERSTORM CHANCES ALONG THE MONTANA DIVIDE AS WELL AS KEEP WINDS SLIGHTLY BREEZY ACROSS THE AREA.
646 AM EDT FRI JUN 19 2015 COLD FRONT STALLS OVER THE NORTH TODAY. A WEAK COLD FRONT SINKS SOUTH FROM THE NORTH AND STALLS OVER THE NORTHERN THIRD OF THE CWA THIS AFTERNOON. THIS COULD KEEP TEMPERATURES A LITTLE COOLER THAN YESTERDAY.
STRONG HIGH PRESSURE CENTERED NEAR LOS ANGELES WILL REMAIN STATIONARY TODAY.
HIGH PRESSURE WILL THEN PASS BY TO OUR NORTH DURING THE OVERNIGHT HOURS. THE FA WILL BE ON THE BACKSIDE OF THE HIGH WITH LOW LEVEL SOUTHERLY FLOW ON THE INCREASE DURING THE DAY. WITH THE MPX AREA REMAINING WITHIN A BELT OF ACTIVE WESTERLIES AS A SUBTROPICAL RIDGE SLOWLY SLIDES EAST ACROSS THE SRN CONUS. THERE IS QUITE A BIT OF VARIABILITY WITH WHERE ACTIVITY WILL BE EACH DAY WITH THE BOUNDARY WAFFLING AROUND THE NRN CONUS AS WE SIT ON THE NRN PERIPHERY OF THE RIDGE.
HIGH PRESSURE TO REMAIN IN CONTROL. THIS AFTERNOON HIGH PRESSURE AT THE SURFACE EXTENDS FROM CANADA TO THE GULF COAST BEHIND A COLD FRONT THAT STRETCHES ALONG THE ATLANTIC EAST COAST TO THE YUCATAN PENINSULA. ALOFT A SHARP TROF AND UPPER LOW IS LOCATED ACROSS THE SE STATES AND THE EASTERN SECTIONS OF THE GULF WHILE A RIDGE IS NOTED FROM NORTH MEXICO ACROSS THE PLAINS.
A WAVE ROTATING AROUND THE FAR PERIPHERY OF THE UPPER LOW IN THE SOUTHEAST. THE COMBINATION OF AN UPPER LEVEL TROF DIPPING OUT OF CANADA AND THE TROPICAL SYSTEM OFF THE COAST WILL CONTINUE TO SPIN MOISTURE BACK INTO NY AND PA ON SATURDAY.
933 PM EDT FRI OCT 2 2015 WATER VAPOR LOOP IMAGERY SHOWS POWERFUL HURRICANE JOAQUIN NOW LIFTING OUT TO THE NORTHEAST AWAY FROM THE CENTRAL BAHAMAS THIS EVENING WHILE A DEEP UPPER LEVEL TROUGH/CLOSED LOW WAS NOTED OVER THE SOUTHERN AL/ WESTERN FLORIDA PANHANDLE AND SOUTH INTO THE NORTHEASTERN GULF OF MEXICO. AT THE SURFACE A WEAK LOW PRESSURE OFFSHORE THE NORTHEAST FLORIDA COAST WILL MOVE LIFT NORTHWARD ALONG THE CAROLINA COAST THROUGH SATURDAY WITH A TRAILING FRONTAL BOUNDARY NOW ACROSS THE SOUTHERN PENINSULA MOVING TO JUST SOUTH OF THE STATE ON SATURDAY. BUT SHOWERS WILL LIKELY LINGER OVER THE ADJACENT GULF WATERS AND POSSIBLY A FEW ALONG COASTAL LOCATIONS OVERNIGHT GIVEN THE PRESENCE OF THE UPPER LEVEL LOW AND CYCLONIC FLOW OVER THE REGION AND WILL RETAIN A LOW 20 PERCENT POP.