Aikyam-Lab/Synoptic-Bench huggingface dataset:
CURRENT SURFACE ANALYSIS PLACES TROUGH OVER EASTERN MONTANA WITH HIGH OVER THE MIDWEST RESULTING IN GUSTY SOUTHEASTERLY WINDS OVER OUR AREA. UPPER LEVEL ANALYSIS PLACES TROUGH NEAR THE PACIFIC NORTHWEST WITH CUT-OFF LOW OVER THE FOUR CORNERS. RIDGE STRETCHES FROM THE MIDWEST INTO MANITOBA WHILE SOUTHWESTERLY FLOW REMAINS OVER OUR AREA.
501 PM CST SAT MAR 12 2016 THE LOW PRESSURE SYSTEM THAT HAS BEEN RESPONSIBLE FOR OUR SOGGY WEATHER PATTERN THIS PAST WEEK HAS FINALLY MOVE INTO EAST TEXAS. ANOTHER LOW PRESSURE SYSTEM WILL MOVE JUST NORTH OF THE RED RIVER VALLEY.
612 PM EST SAT MAR 12 2016 A WEAK COLD FRONT WILL FINISH CROSSING THE REGION EARLY THIS EVENING.
1138 PM EST SAT MAR 12 2016 A WEAK COLD FRONT WILL FINISH CROSSING THE REGION EARLY THIS EVENING.
THE LOW PRESSURE SYSTEM THAT BROUGHT RAIN AND SNOW SHOWERS TO NORTHERN ARIZONA SATURDAY MORNING HAS MOVED INTO NEW MEXICO. HIGH PRESSURE WILL BUILD OVER THE STATE AND BRING DRY WEATHER. THE UPPER LOW THAT BROUGHT THE RAIN AND SNOW SHOWERS ACROSS NORTHERN ARIZONA THIS MORNING HAS MOVED INTO NEW MEXICO AND PRECIPITATION HAS ALL BUT ENDED ACROSS OUR STATE. HIGH PRESSURE WILL BEING TO BUILD OVER THE STATE TONIGHT.
TEMPERATURES WILL BE MODERATED BY THE LOWER/MID 50S DEWPOINTS ACROSS THE AREA. MON-TUE: DEPARTING LOW WILL LEAVE AREA IN FAIRLY DIFFLUENCE ZONAL FLOW WITH DEVELOPING LEE TROUGH. STILL HAVE HINTS OF PRECIPITATION IN CENTRAL KS MON NIGHT AS WEAK COLD FRONT MOVE THROUGH. PRECIPITATION CHANCES BY END OF PERIOD ARE BEING DRIVEN BY ECMWF WHICH IS QUITE AGRESSIVE WITH UPPER LOW LAGGING OVER NORTHERN PLAINS. AN UPPER TROF OVER NEW MEXICO WILL MOVE EAST INTO OKLAHOMA ON SUNDAY WITH SCATTERED SHOWERS EXPECTED ACROSS SOUTHERN KANSAS.
646 PM EST SAT MAR 12 2016 A WARM FRONT WILL DEVELOP ALONG THE OHIO RIVER TONIGHT AND MOVE NORTH INTO THE GREAT LAKES SUNDAY NIGHT AS LOW PRESSURE STRENGTHENS IN THE MIDWEST.
949 PM MST SAT MAR 12 2016 THE LATEST LOW PRESSURE SYSTEM CONTINUES TO TRACK ACROSS NORTHERN NEW MEXICO THIS AFTERNOON. COOLER TEMPS WILL FOLLOW TONIGHT DUE TO LOWER TEMPS ALOFT. AND AS A WEAK RIDGE MOVES OVERHEAD. ENERGY/MOISTURE ALONG THE SOUTHERN PORTION OF A LARGER SCALE LOW PRESSURE SYSTEM OVER THE GULF OF ALASKA. THE UPPER JET SOUTH OF THIS LOW CENTER WILL MOVE EASTWARD OVER THE CENTRAL-TO-NORTHWEST COAST. LOOK FOR A WARM AND DRY DAY AS THE RIDGE FLATTENS AND SHIFTS EAST. MAINLY OROGRAPHIC SHOWERS WILL DEVELOP OVER THE NORTH LATE SUN NIGHT AHEAD OF A STRONGER WAVE AND COLD FRONT ON MON.
DEEP LAYER RIDGING OVER THE WESTERN ATLC FINALLY BREAKS DOWN AND GRADUALLY SLIDES EAST AS AN UPPER TROUGH/ASSOCIATED ENERGY DRIVE A WEAK DISTURBANCE INTO THE AREA. ESPECIALLY NORTH OF MELBOURNE WHERE TEMPERATURES ALOFT ARE A LITTLE COOLER. DEEP LAYER RIDGING OVER THE WESTERN ATLC BREAKS DOWN WITH THE APPROACH OF A WEAK WEATHER SYSTEM. CHC TSRAS N OF I-4/SLGT CHC S OF I-4 SUN AFT AS A WEAK TROF PUSHES ACRS THE ERN GOMEX/FL PENINSULA. LIGHT TO GENTLE TRANSPORT WINDS FROM THE S BCMG GENTLE TO MODERATE FROM THE SW AS THE TROF PUSHES THRU.
A HIGH PRESSURE IS LOCATED NORTHEAST OF THE BAHAMAS. THIS WILL SLOWLY SHIFT EASTWARD ON SUNDAY AND THE PRESSURE GRADIENT ACROSS THE FLORIDA KEYS WILL RELAX AS THE HIGH PRESSURE WEAKENS.
1104 PM EST SAT MAR 12 2016 A WEAK COLD FRONT WILL FINISH CROSSING THE REGION EARLY THIS EVENING.
1018 PM EST SAT MAR 12 2016 HIGH PRESSURE OFFSHORE WILL MOVE AWAY FROM THE REGION THIS EVENING AS A FRONTAL SYSTEM ENTERS THE AREA.
335 AM EDT WED JUL 8 2015 A COLD FRONT WILL CROSS THE REGION THIS MORNING MORNING.
THESE WERE IN RESPONSE TO AN UPPER LEVEL TROUGH MOVING ACROSS CENTRAL IDAHO AND WERE A LITTLE FARTHER WEST AND SOUTH THAN EXPECTED SO HAVE UPDATED THE FORECAST FOR THAT. WATERVAPOR IMAGE SHOWS LARGE SCALE TROUGH SLIDING THROUGH NE OREGON AND THE ID PANHANDLE AS WELL AS A MOIST AXIS ACROSS N NV LIFTING SLOWLY N. GOOD MODEL AGREEMENT THAT THE TROUGH WILL GET AS FAR S AS KBKE-KMYL AND PROVIDE LIFT FOR LATE DAY SHOWERS AND THUNDERSTORMS ACROSS NRN ZONES. LATE TONIGHT AND THURSDAY AS THE COASTAL UPPER LOW MOVES INLAND.
211 AM EDT WED JUL 8 2015 A COLD FRONT OVER THE EASTERN GREAT LAKES WILL MOVE EASTWARD ACROSS THE NORTH COUNTRY EARLY THIS MORNING WITH SHOWERS AND ISOLATED THUNDERSTORMS. A HIGH PRESSURE AREA WILL BUILD SLOWLY EAST FROM THE GREAT LAKES LATER TODAY AND WILL BE OVER THE NORTH COUNTRY THROUGH THE END OF THE WEEK. COLD FRONT NOW PAST KMSS AND WILL CONTINUE TO MOVE STEADILY SE ACROSS THE AREA OVERNIGHT.
A LOW PRESSURE SYSTEM IS CENTERED NEAR SAN FRANCISCO AND A FRONT IS POSITIONED ACROSS THE SOUTHERN HIGHLANDS THIS MORNING.
A RIDGE OF HIGH PRESSURE WILL GRADUALLY BUILD OVER THE SOUTHEAST AND STRENGTHEN THROUGH THE REMAINDER OF THE WORK WEEK. AS A WEAK SHEAR AXIS SLOWLY EXITS THE REGION TO THE EAST AND A MID LEVEL RIDGE SLOWLY STARTS TO BUILD TOWARDS THE AREA. THE SUBTROPICAL RIDGE WILL STRENGTHEN DURING THE PERIOD WITH RISING HEIGHTS AND THICKNESSES. THE ASSOCIATED COLD FRONT SETTLES NORTH OF OUR AREA IN AN EAST TO WEST AXIS ACROSS THE MID ATLANTIC AND OHIO VALLEY. A SERIES OF UPPER-LEVEL DISTURBANCES IS PROGGED TO RIDE AROUND THE RIDGE IN PROXIMITY OF THE FRONT ON WEDNESDAY INTO THURSDAY ENHANCING AREA OF CONVECTION TO OUR NORTHWEST AND NORTH. THE SUBTROPICAL RIDGE RETROGRADING ACROSS THE SOUTHEAST WILL SUPPRESS THE WESTERLIES WELL NORTH OF THE AREA.
121 AM EDT WED JUL 8 2015 A WEAK COLD FRONT WILL STALL NEAR THE MASON-DIXON LINE THIS MORNING. CHANCES FOR RAIN DIMINISH TONIGHT AS THE NEXT LOW PRESSURE SYSTEM MOVES TO NORTHEASTERN INDIANA BY THURSDAY MORNING. HIGH PRESSURE WILL BUILD INTO THE REGION THURSDAY NIGHT.
UNGER A GRADUAL DECAYING LINE OF STORMS CONTINUES TO TRACK INTO THE NORTHERN PLATEAU AND THE CUMBERLAND MTNS OF EASTERN KENTUCKY AND SOUTHWEST VIRGINIA ALONG THE EDGE OF AN UPPER-LEVEL RIDGE OF HIGH PRESSURE THAT IS BUILDING INTO THE AREA.
640 AM EDT WED JUL 8 2015 A COLD FRONT WILL MOVE ACROSS THE REGION TODAY. HIGH PRESSURE WILL THEN BUILD TOWARD THE REGION FROM THE GREAT LAKES TONIGHT INTO THURSDAY.
HIGH PRESSURE CONTINUES TO DRIFT THROUGH THE WESTERN GREAT LAKES. COOLER TEMPERATURES. EXPECT THAT LOWS WILL SHADE TO THE COOLER SIDE WITH LIGHT WINDS. SYNOPTIC WARM FRONT REMAINS TO THE SOUTH.
535 AM CDT WED JUL 8 2015 WATER VAPOR IMAGERY SHOWING A BROAD TROUGH/ZONAL FLOW FROM EAST OF THE NORTHERN ROCKIES THROUGH THE UPPER MISSISSIPPI RIVER VALLEY AND THROUGH THE GREAT LAKES. TO THE LOWER/MIDDLE 50S ELSEWHERE. A WEAK MID-LEVEL TROUGH WILL DRIFT ACROSS FROM THE NORTHERN PLAINS INTO NORTHERN MN/WI TODAY. WE WILL BE ON THE SOUTHERN INFLUENCE OF THIS TROUGH WITH MODEL SOUNDINGS SHOWING ONLY SOME CIRRUS AND SCATTERED/BROKEN SHALLOW CUMULUS.
1215 AM CDT WED JUL 8 2015 SURFACE ANALYSIS SHOWS A RIDGE OF HIGH PRESSURE ACROSS THE FORECAST AREA. ON WEDNESDAY AN UPPER LEVEL WAVE STARTS TO MOVE OUT OF THE ROCKIES BUT REMAINS ON THE HIGH PLAINS. THERE COULD BE SOME SHOWERS AND THUNDERSTORMS ON THE HIGH PLAINS. TEMPERATURES ON WEDNESDAY WILL BE A LITTLE WARMER THAN TODAY.
AN UPPER RIDGE OVER THE REGION WILL SLOWLY WEAKEN AS IT MOVES EAST TODAY AND THURSDAY.
300 AM CDT WED JUL 8 2015 LATEST MODELS ARE IN PRETTY GOOD AGREEMENT SHOWING LARGE SCALE TRANSITIONING FROM ZONAL FLOW TO A MORE AMPLIFIED PATTERN WITH A HIGH PRESSURE DOME PREVAILING OVER THE CNTRL/ERN CONUS WITH A UPSTREAM TROF BECOMING ESTABLISHED OVER THE WEST COAST. NAM/GFS ARE MORE OPTIMISTIC WITH PCPN DEVELOPMENT OVER THE CWA HEADING INTO THIS WEEKEND ALONG A WARM FRONT LIFTING OUT OF THE CNTRL PLAINS AND INTO THE UPPER MIDWEST. ECM AND GFS ON TRACK SHOWING WARM AND HUMID CONDITIONS ON TAP THIS WEEKEND IN RESPONSE TO UPPER LEVEL HIGH PRESSURE IN CONTROL OVER THE CONUS. SHOULD SEE AFTN HIGHS PUSHING INTO THE LOW/MID 90S ON SAT AND SUN WITH HEAT INDICES AROUND 100.
413 AM MDT WED JUL 8 2015 SATELLITE TRENDS THIS MORNING SHOW THE UPPER LOW IN SOUTHWEST COLORADO BEGINNING TO ACCELERATE EASTWARD WITH A SPOKE OF VORTICITY STRETCHING NEAR STEAMBOAT SPRINGS TO COLORADO SPRINGS WHILE LIFTING TO THE NORTHEAST. STORMS ASSOCIATED WITH THE UPPER LOW WILL HAVE GOOD MOTION WHICH SHOULD LIMIT FLASH FLOODING. WITH CLOUD COVER AND MOISTURE MOST OF THE PLAINS LOCATIONS WILL ONLY REACH THE LOWER TO MID 70S. DEEP CLOSED UPPER LOW STILL OFF THE CALIFORNIA COAST AT 12Z/THU WITH WEAK ZONAL FLOW ALOFT OVER COLORADO IN THE WARM/MOIST SOUTHEAST SECTOR OF THE TROUGH.
AND PREFER THE SOLN OFFERED UP BY THE HIGH RES ARW AND NMM WHICH KEEP MAJORITY OF SHOWER AND ISOLATED THUNDERSTORM ACTIVITY ACROSS THE MOUNTAINS AND VALLEYS. UPPER TROF ACROSS UT WILL TRANSLATE EASTWARD ACROSS THE AREA DURING THE AFTERNOON. THIS SETS UP A NICE CONVERGENCE ZONE ALONG THE NORTHERN SLOPES OF THE RATON RIDGE. WHICH BASED ON TIMING OF THE UPPER TROF SEEMS REASONABLE.
WELL SOUTH/SOUTHWEST OF THE LOWER KEYS. THE LOCAL AREA WILL REMAIN ON THE SOUTH/SOUTHWESTERN PERIPHERY OF A HIGH PRESSURE AXIS EXTENDING INTO THE STATE FROM THE ATLANTIC.
141 AM EDT WED JUL 8 2015 A WEAK COLD FRONT WILL STALL NEAR THE MASON-DIXON LINE THIS MORNING. CHANCES FOR RAIN DIMINISH TONIGHT AS THE NEXT LOW PRESSURE SYSTEM MOVES TO NORTHEASTERN INDIANA BY THURSDAY MORNING. HIGH PRESSURE WILL BUILD INTO THE REGION THURSDAY NIGHT.
257 AM PDT WED JUL 8 2015 THUNDERSTORMS CAPABLE OF PRODUCING FLASH FLOODING ARE EXPECTED AGAIN TODAY AS LOW PRESSURE REMAINS NEAR THE NORTHERN CALIFORNIA COAST.
THE TRACK OF THIS LOW PRESENTS A NUMBER OF FCST PROBLEMS THRU TONIGHT.
WATERVAPOR IMAGE SHOWS LARGE SCALE TROUGH SLIDING THROUGH NE OREGON AND THE ID PANHANDLE AS WELL AS A MOIST AXIS ACROSS N NV LIFTING SLOWLY N. GOOD MODEL AGREEMENT THAT THE TROUGH WILL GET AS FAR S AS KBKE-KMYL AND PROVIDE LIFT FOR LATE DAY SHOWERS AND THUNDERSTORMS ACROSS NRN ZONES. LATE TONIGHT AND THURSDAY AS THE COASTAL UPPER LOW MOVES INLAND.
LOW PRESSURE TRACKING ALONG THE FRONT EARLY THURSDAY MORNING IS FORECAST TO BRING A PERIOD OF WIDESPREAD SHOWERS AND THUNDERSTORMS.
RIDGING CONTINUES (BOTH AT THE SFC AND ALOFT). HIGH TEMPERATURES THIS AFTERNOON EXPECTED TO CLIMB INTO THE LOW TO MID 90S MOST LOCATIONS. WITH THE COOLER TEMPS NEAR THE COAST. LOW TEMPERATURES TONIGHT ARE EXPECTED TO RANGE FROM THE LOWER 70S OVER ALL OF THE INTERIOR TO THE MID/UPPER 70S NEAR AND ALONG THE COAST.
300 AM CDT WED JUL 8 2015 WATER VAPOR IMAGERY SHOWING A BROAD TROUGH/ZONAL FLOW FROM EAST OF THE NORTHERN ROCKIES THROUGH THE UPPER MISSISSIPPI RIVER VALLEY AND THROUGH THE GREAT LAKES. TO THE LOWER/MIDDLE 50S ELSEWHERE. A WEAK MID-LEVEL TROUGH WILL DRIFT ACROSS FROM THE NORTHERN PLAINS INTO NORTHERN MN/WI TODAY. WE WILL BE ON THE SOUTHERN INFLUENCE OF THIS TROUGH WITH MODEL SOUNDINGS SHOWING ONLY SOME CIRRUS AND SCATTERED/BROKEN SHALLOW CUMULUS.
PATTERN OVERVIEW: SOME SEMBLANCE OF A REX BLOCKING PATTERN ACROSS WESTERN NOAM WITH RIDGING ACROSS THE PAC NW OVER TOP CUTOFF LOW PRESSURE ALONG THE CALIFORNIA COAST. BROAD LOW AMPLITUDE TROUGHINESS REMAINS DOWNSTREAM OVER MUCH OF CANADA WITH A RESPECTABLE UPPER JET STREAK STRETCHING FROM THE NRN PLAINS ACROSS THE NRN GREAT LAKES REGION. LARGE EXPANSE OF HIGH PRESSURE IS CENTERED PRETTY MUCH OF THE STATE THIS MORNING PROVIDING LOTS OF CLEAR SKIES. AFOREMENTIONED HIGH PRESSURE SYSTEM WILL MOVE ACROSS THE STATE WITH ABUNDANT SUNSHINE EXPECTED. HIGH PRESSURE WILL MOVE ON OFF TO THE EAST WHILE DECENT SHORT WAVE AND LOW PRESSURE SYSTEM WINDS UP ACROSS THE MID MISSISSIPPI RIVER VALLEY AND TRACKS THROUGH THE OHIO VALLEY/LOWER GREAT LAKES REGION. HIGH PRESSURE ACROSS THE REGION WILL SLOWLY WEAKEN BUT HEIGHTS ALOFT WILL CONTINUE TO RISE EVER SO SLIGHTLY.
344 AM EDT WED JUL 8 2015 A COLD FRONT WILL STALL OUT NEAR THE MASON-DIXON LINE TODAY AND IT WILL REMAIN NEARLY STATIONARY THROUGH THURSDAY. LOW PRESSURE WILL TRACK ALONG THE FRONT.
MUCH QUIETER WEATHER TODAY WITH A RIDGE OF HIGH PRESSURE OVER THE AREA AND COOLER AND DRIER CONDITIONS. THIS RIDGE IS EXPECTED TO SLIDE SOUTHEAST TONIGHT. WEDNESDAY THE RIDGE SLIDES FAR ENOUGH SOUTHEAST TO ALLOW WARMER AND MORE HUMID AIR TO FLOW INTO THE AREA ON THE SOUTHERLY RETURN FLOW. ESPECIALLY AS A WEAK COLD FRONT WILL BE APPROACHING FROM THE NORTHWEST. BUT OTHERWISE WE WILL JUST HAVE WARMER TEMPS AND HIGHER HUMIDITY VALUES. MAX TEMPS 3-5 DEGREES WARMER THAN TODAY IN THE LOW TO MID 70S. WEAK RIDGING ALOFT WILL COMBINE WITH HIGH PRESSURE AT THE SURFACE BEHIND THE DEPARTING SYSTEM LATE THUR AND FRI TO KEEP CONDITIONS QUIET. BUT BE PUSHING INTO A HIGH AMPLITUDE UPPER RIDGE AND RELATIVELY DRY AIR MASS.
DEEP LAYER RIDGING WILL KEEP ANY SYNOPTIC-SCALE ENHANCEMENTS AWAY FROM THE AREA, SO CONVECTION WILL BE TRIGGERED BY MESOSCALE FEATURES LIKE THE SEA BREEZE AND RESIDUAL OR SUBSEQUENT TS OUTFLOW BOUNDARIES.
403 AM EDT WED JUL 8 2015 THE COLD FRONT WILL STALL NEAR THE MASON-DIXON LINE THIS MORNING. CHANCES FOR RAIN DIMINISH TONIGHT AS THE NEXT LOW PRESSURE SYSTEM MOVES TO NORTHEASTERN INDIANA BY THURSDAY MORNING. HIGH PRESSURE WILL BUILD INTO THE REGION THURSDAY NIGHT.
445 AM CDT WED JUL 8 2015 THE SUBTROPICAL RIDGE WILL REMAIN WEDGED INTO THE REGION FROM THE EAST THROUGH THE FORECAST PERIOD. PARTICULARLY ACROSS MY WEST WHICH RESIDES ON THE WESTERN PERIPHERY OF THE AFOREMENTIONED RIDGE AND WHERE A BIT BETTER MOISTURE WILL EXIST. LOWS BOTH TONIGHT AND WEDNESDAY NIGHT WILL FALL INTO THE LOW AND MIDDLE 70S.
148 AM EDT WED JUL 8 2015 A COLD FRONT OVER THE EASTERN GREAT LAKES WILL MOVE EASTWARD ACROSS THE NORTH COUNTRY EARLY THIS MORNING WITH SHOWERS AND ISOLATED THUNDERSTORMS. A HIGH PRESSURE AREA WILL BUILD SLOWLY EAST FROM THE GREAT LAKES LATER TODAY AND WILL BE OVER THE NORTH COUNTRY THROUGH THE END OF THE WEEK. COLD FRONT NOW PAST KMSS AND WILL CONTINUE TO MOVE STEADILY SE ACROSS THE AREA OVERNIGHT.
High pressure will return for Wednesday and Thursday with dry and warmer weather.
A BROAD UPPER LOW WILL LIFT THROUGH THE WESTERN GREAT BASIN LATE IN THE WEEK. AN UPPER LOW REMAINS OFF THE CA COAST THIS EVE WITH A BROAD LOOSELY ORGANIZED DEFORMATION AXIS ACROSS THE GREAT BASIN. THE LOW IS FORECAST TO LIFT NWD THRU WRN NV ON FRI WITH A STRONG VORT LOBE LIFTING THRU UT LIKELY SPARKING MORE WIDESPREAD CONVECTION. AND A BROAD UPPER LOW APPROACHES THE AREA THURSDAY. PASSAGE OF THE UPPER LOW LATE THURSDAY AFTERNOON AND NIGHT WILL LIKELY SPARK HIGH BASED CONVECTION WITH MINIMAL RAINFALL BUT A THREAT THUNDERSTORMS PRODUCING GUSTY AND ERRATIC OUTFLOW WINDS.
333 AM CDT WED JUL 8 2015 COLD FRONT LOCATED JUST TO THE NORTH AND NORTHWEST OF THE CWA THIS MORNING. UPPER LEVELS STILL INDICATE AN UPPER LEVEL HIGH NEAR THE BAHAMAS. THE AFOREMENTIONED COLD FRONT WILL BEGIN WORKING BACK TO THE NORTH AS A WARM FRONT. WESTERLIES WILL STILL HOLD THROUGH TODAY AND TONIGHT SO WILL CONTINUE WITH THE LOW POPS.
401 AM EDT WED JUL 8 2015 A COLD FRONT OVER THE EASTERN GREAT LAKES WILL MOVE EASTWARD ACROSS THE NORTH COUNTRY EARLY THIS MORNING WITH SHOWERS AND ISOLATED THUNDERSTORMS. A HIGH PRESSURE AREA WILL BUILD SLOWLY EAST FROM THE GREAT LAKES LATER TODAY AND WILL BE OVER THE NORTH COUNTRY THROUGH THE END OF THE WEEK. COLD FRONT AT 330 A.
STACKED HIGH PRESSURE WILL BUILD OVER GA THROUGH THE PERIOD WHICH WILL BRING WARM TEMPERATURES AND CONTINUED SCATTERED MAINLY AFTERNOON SHOWERS AND STORMS AS THE SEA BREEZES DEVELOP. BUILDING SUBSIDENCE OVER SE GA INTO THU WILL LIMIT CONVECTIVE POTENTIAL FURTHER AND CAPPED RAIN CHANCES AT 20-25% WITH THE HIGHER RAIN CHANCES OF 30-40% ADVERTISED IN THE VICINITY OF THE I-75 CORRIDOR IN THE LATE AFTN ACROSS NE FL. A FEW STRONG TO ISOLATED SEVERE STORMS WILL BE POSSIBLE ESPECIALLY OVER NE FL WHERE COOLER TEMPS ALOFT WILL LINGER. HIGH TEMPS WILL RANGE IN THE LOW/MID 90S WITH HEAT INDICES NEAR 100-103 DEG WITH DRIER AIR EXPECTED TO MIX DOWN DEW PTS IN THE UPPER 60S TO NEAR 70 INLAND.
359 AM EDT WED JUL 8 2015 HIGH PRESSURE BUILDING ACROSS THE FORECAST AREA TODAY WILL RESULT IN CLEARING SKIES AND A REFRESHING AIRMASS CHANGE WITH LOWER HUMIDITY AND HIGH TEMPERATURES IN THE LOW 70S.
342 AM EDT WED JUL 8 2015 A COLD FRONT WILL MOVE ACROSS THE REGION TODAY. HIGH PRESSURE WILL THEN BUILD TOWARD THE REGION FROM THE GREAT LAKES TONIGHT INTO THURSDAY.
HIGH PRESSURE WILL CONTINUE TO BUILD IN TO THE COASTAL STATES. EXPECT HIGH TEMPERATURES TO BE A DEGREE OR TWO COOLER THAN PREVIOUSLY FORECAST.
351 AM EDT WED JUL 8 2015 HIGH PRESSURE OFFSHORE AND AN INLAND TROUGH WILL PERSIST THROUGH THE WEEK.
IN THE LOWER STRATUS CLOUDS. THIS LOW WILL PASS TO OUR NORTH THURSDAY.
THE SUBTROPICAL RIDGE REMAINS STRETCHED FROM THE ATLANTIC INTO THE NORTHERN GULF COAST THIS MORNING WHILE MID TO UPPER LVL RIDGING REMAINS AS WELL.
324 AM CDT WED JUL 8 2015 1021MB HIGH PRESSURE OVER THE GREAT LAKES HAS BROUGHT A COOLER/DRIER AIRMASS INTO MUCH OF CENTRAL ILLINOIS EARLY THIS MORNING. AS EVIDENCED BY 08Z/3AM DEWPOINTS ONLY IN THE LOWER TO MIDDLE 50S. AN AREA OF LOW PRESSURE IS DEVELOPING ALONG A STATIONARY FRONTAL BOUNDARY OVER SOUTHERN OKLAHOMA. THE LOW IS EXPECTED TO TRACK SLOWLY NORTHEASTWARD TODAY. AS LOW PRESSURE TRACKS ACROSS THE HEART OF CENTRAL ILLINOIS INTO NORTHERN INDIANA BY EARLY THURSDAY MORNING. ONCE THE LOW LIFTS TO THE NORTHEAST.
332 AM CDT WED JUL 8 2015 THE PATTERN ALOFT FEATURED A CLOSED LOW PRESSURE SYSTEM OFF THE COAST OF CALIFORNIA. A TROUGH FROM MANITOBA INTO MONTANA WITH WEST TO SOUTHWEST FLOW IN PLACE ACROSS THE CENTRAL AND SOUTHERN PLAINS. THE INCREASE IN CLOUD COVER COMBINED WITH THE COOLER AIRMASS IN PLACE SHLD HOLD TEMPS IN THE 70S FOR HIGHS THIS AFTN.
Meanwhile the 925 MB front stretched across far southern Missouri along the Highway 60 corridor.
636 AM EDT WED JUL 8 2015 THE COLD FRONT WILL STALL NEAR THE MASON-DIXON LINE THIS MORNING. CHANCES FOR RAIN DIMINISH TONIGHT AS THE NEXT LOW PRESSURE SYSTEM MOVES TO NORTHEASTERN INDIANA BY THURSDAY MORNING. HIGH PRESSURE WILL BUILD INTO THE REGION THURSDAY NIGHT.
WEAK UPPER-LEVEL RIDGING WILL REMAIN IN PLACE ACROSS THE REGION FOR TODAY AS A TUTT CURRENTLY APPROACHING THE BAHAMAS CONTINUES ITS TREK WESTWARD WITH A POCKET OF DRY AIR OUT AHEAD OF IT. THE RIDGE AXIS HAS SHIFTED NORTHWARD FROM YESTERDAY AND IS FORECAST TO SHIFT NORTHWARD A BIT MORE TODAY. THE UPPER-LEVEL RIDGE SHIFTS WESTWARD WITH THE TUTT MOVING SOUTH OF THE BAHAMAS. DRIER AIR BETWEEN THE RIDGE AND TUTT WILL SPREAD OVER THE AREA AND HELP TO LIMIT CONVECTION WITH MOSTLY ISOLATED POPS IN THE FORECAST. TEMPERATURES WILL ALSO BE A DEGREE OR TWO WARMER WITH MORE SUN AND LESS RAIN.
AS A LOW PRESSURE SYSTEM SLIDES ACROSS CENTRAL AND NORTHERN CALIFORNIA. THIS LOW WILL ALSO PROMOTE THE POSSIBILITY OF SHOWERS AND ISOLATED THUNDERSTORMS ON WEDNESDAY AND THURSDAY.
A few showers and thunderstorms may develop (primarily over the higher terrain) from about a Grangeville to Butte line southward, but all indicators point to generally weak storms.
526 AM CDT WED JUL 8 2015 THE PATTERN ALOFT FEATURED A CLOSED LOW PRESSURE SYSTEM OFF THE COAST OF CALIFORNIA. A TROUGH FROM MANITOBA INTO MONTANA WITH WEST TO SOUTHWEST FLOW IN PLACE ACROSS THE CENTRAL AND SOUTHERN PLAINS. THE INCREASE IN CLOUD COVER COMBINED WITH THE COOLER AIRMASS IN PLACE SHLD HOLD TEMPS IN THE 70S FOR HIGHS THIS AFTN.
532 AM EDT WED JUL 8 2015 A COLD FRONT WILL STALL OUT NEAR THE MASON-DIXON LINE TODAY AND IT WILL REMAIN NEARLY STATIONARY THROUGH THURSDAY. LOW PRESSURE WILL TRACK ALONG THE FRONT.
AT 00Z WEDNESDAY AN UPPER LOW REMAINS NEARLY STATIONARY WEST OF THE CALIFORNIA COAST. DOWN STREAM OF THIS UPPER LOW A 500MB TROUGH WAS LOCATED ACROSS THE FOUR CORNERS REGION. AN 850MB TROUGH EXTENDED FROM WESTERN OKLAHOMA INTO WESTERN ILLINOIS. AREA OF BETTER 850MB TO 700MB MOISTURE WAS LOCATED NEAR THE 850MB TROUGH AND NORTHEAST OF THE 700MB LOW. MEANWHILE, AN UPPER LEVEL LOW WILL START TO ENTER CALIFORNIA WITH A STRONG 250 MB JET EXTENDING ACROSS THE DESERT SOUTHWEST. AN AREA OF LOW PRESSURE WILL ALSO DEVELOP AROUND THE KS/CO BORDER WEDNESDAY LEADING TO SOUTHEASTERLY WINDS ACROSS THE CWA.
224 AM EDT WED JUL 8 2015 A COLD FRONT WILL CROSS SOUTHEAST THROUGH THE REGION TONIGHT. A STRONG LOW PRESSURE SYSTEM WILL TRACK TOWARDS THIS BOUNDARY EARLY THURSDAY MORNING. FOLLOWED BY A COLD FRONT THAT WILL SET UP A SIMILAR REPEATING PROCESS FOR THE LATTER PART OF THE WEEK. AS RIDGING CONTINUES TO BUILD OVER THE SOUTHEASTERN STATES.
629 AM EDT WED JUL 8 2015 A COLD FRONT WILL CROSS THE REGION THIS MORNING MORNING.
344 AM EDT WED JUL 8 2015 A COLD FRONT OVER THE EASTERN GREAT LAKES WILL MOVE EASTWARD ACROSS THE NORTH COUNTRY EARLY THIS MORNING WITH SHOWERS AND ISOLATED THUNDERSTORMS. A HIGH PRESSURE AREA WILL BUILD SLOWLY EAST FROM THE GREAT LAKES LATER TODAY AND WILL BE OVER THE NORTH COUNTRY THROUGH THE END OF THE WEEK. COLD FRONT NOW PAST KMSS AND WILL CONTINUE TO MOVE STEADILY SE ACROSS THE AREA OVERNIGHT.
137 AM EDT WED JUL 8 2015 AVIATION A COLD FRONT IS PROGRESSING OFF TO THE EAST OF LOWER MICHIGAN THIS EVENING ALLOWING COOLER AND DRIER AIR TO FILTER IN ON NORTHERLY WINDS. HIGH PRESSURE SLIDING OUR DIRECTION FROM THE NORTHERN PLAINS WILL BRING FAIR WEATHER FROM TONIGHT THROUGH WEDNESDAY. WEDNESDAY WILL BE A PARTLY CLOUDY DAY AS WE SEE CUMULUS DEVELOP ONCE AGAIN ACROSS THE LOWER PENINSULA.
122 AM EDT WED JUL 8 2015 STRONG HIGH PRESSURE AND DRY AIR CONTINUE TO BUILD INTO THE WRN GREAT LAKES REGION. WITH A RATHER ROBUST LOW LEVEL THERMAL TROUGH FIRMLY IN PLACE ACROSS THE CENTRAL AND WESTERN GREAT LAKES. AS HIGH PRESSURE WORKS INTO THE REGION AND PROVIDES LIGHT WINDS.
237 AM EDT WED JUL 8 2015 AN UPPER LEVEL TROUGH WILL MOVE EAST OF THE AREA.
THE PERSISTENT RIDGE OF HIGH PRESSURE RESPONSIBLE FOR THE EARLY JULY HEAT WAVE WILL GRADUALLY WEAKEN THE REST OF THE WEEK AS ONSHORE FLOW STRENGTHENS. AN UPPER LOW OFF CALIFORNIA MAY DRIFT FAR ENOUGH NORTH WEDNESDAY TO BRING A THREAT OF THUNDERSTORMS TO THE HIGHER CASCADES IN THE AFTERNOON. TEMPERATURES WILL COOL DOWN CLOSER TO SEASONAL NORMALS BY THE END OF THE WEEK AS A TROUGH OF LOW PRES APPROACHES THE COAST.
1045 PM PDT TUE JUL 7 2015 A TROUGH OF LOW PRESSURE APPROACHING THE AREA WILL BRING NIGHT AND MORNING CLOUDS. A COOLER AIR MASS WILL BE IN PLACE THROUGH MUCH OF THE WEEK AS A TROUGH OF LOW PRESSURE DRIFTS OVER THE REGION. A WARMUP IS POSSIBLE FOR THE WEEKEND AS A HIGH PRESSURE SYSTEM COULD BUILD OVER THE AREA. WATER VAPOR IMAGERY INDICATES A CUT-OFF TROUGH OF LOW PRESSURE CENTERED NEAR 37N AND 127W. AT THE SURFACE AND AHEAD OF THE TROUGH. ONSHORE PRESSURE GRADIENTS SHOULD ONLY INCREASE AS THE TROUGH CENTER DROPS INTO THE REGION OVER THE COMING DAYS. THERE WILL BE SOME LIFT ASSOCIATED WITH THE UPPER LOW ON THURSDAY AS IT MOVES OVER LAND.
FOR TODAY MID AND HIGH LEVEL CLOUDS WILL BE ON THE INCREASE AS AN UPPER LEVEL TROUGH MOVES EAST INTO THE ROCKIES. THE SURFACE BOUNDARY WILL BEGIN TO MOVE NORTH ACROSS WESTERN KANSAS AS A WARM FRONT. WILL STILL NEED TO WATCH HOW THE STORMS EVOLVE OVER EASTERN/NORTHEAST COLORADO OVERNIGHT GIVEN THE WARM AIR ADVECTION, BETTER MOISTURE RETURN FROM THE SOUTHEASTERLY FLOW NORTH OF THE WARM FRONT AND THE LOCATION OF THE MID LEVEL BAROCLINIC ZONE.
141 AM EDT WED JUL 8 2015 SHOWERS AND THUNDERSTORMS WILL TAPER OFF FROM WEST TO EAST OVERNIGHT AS A COLD FRONT CROSSES THE REGION. SKIES WILL CLEAR DURING THE DAY ON WEDNESDAY WITH DRIER AIR AND COOLER TEMPERATURES BEHIND THE FRONT.
Sub-freezing conditions appear likely Friday night under clear skies and light winds. Sunny conditions will prevail the remainder of the weekend, under high pressure.
621 PM EST THU NOV 12 2015 HIGH PRESSURE WILL SLOWLY BUILD INTO THE REGION THROUGH THE END OF THE WEEK. UPPER TROUGH OVER THE GREAT LAKES IS PIVOTING NORTHEAST AWAY FROM THE REGION. A POSITIVELY TILTED TROUGH WILL MOVE THROUGH THE GREAT LAKES ON FRIDAY AND PASS OFF TO THE EAST FRIDAY NIGHT.
555 PM CST THU NOV 12 2015 FLIGHT CATEGORIES WILL BE VFR DUE TO A LARGE AREA OF HIGH PRESSURE ON THE SURFACE PREVAILING. SURFACE WINDS WILL BE LIGHT NORTH TO NORTHEAST LESS THAN 5 KNOTS OVERNIGHT WITH A GRADUAL TURN TO THE NORTHEAST TO LESS THAN 7 KNOTS AS THE HIGH SHIFTS EAST ACROSS THE LOWER MISSISSIPPI VALLEY. /ISSUED 256 PM CST THU NOV 12 2015/ HIGH PRESSURE CONTINUES TO BUILD INTO THE REGION IN THE WAKE OF THE OVERNIGHT COLD FRONT.
635 PM CST THU NOV 12 2015 STRONG W/NW PRESSURE GRADIENT REMAINS IN PLACE LATE THIS AFTERNOON IN THE WAKE OF THE DEPARTING LOW PRESSURE SYSTEM CENTERED JUST NORTH OF LAKE HURON.