Aikyam-Lab/Synoptic-Bench huggingface dataset:
341 AM EDT SAT JUN 27 2015 UNSEASONABLY DEEP LOW PRESSURE WILL MOVE THROUGH THE REGION TODAY. THE TIMING OF THAT FEATURE WITH WARM FRONT POSITIONING AND PROLONGED MOISTURE CONVERGENCE NORTH AND EAST OF THE MID LEVEL LOW WILL DETERMINE WHERE THE HEAVIEST RAINFALL OCCURS. AREAS NORTH OF PITTSBURGH ARE PROJECTED FOR THE HIGHER TOTALS. WHILE BOUNDARY LAYER VALUES ESCALATE IN VICINITY OF THE AFOREMENTIONED WARM FRONT. SHOWERS AND COOLER TEMPERATURES CAN BE EXPECTED TONIGHT AND THROUGH MUCH OF SUNDAY.
TRANQUIL WEATHER IS EXPECTED TODAY THROUGH TONIGHT AS UPPER LEVEL RIDGING BUILDS ACROSS THE WESTERN UNITED STATES AND AN UPPER LEVEL LONG WAVE TROUGH DEEPENS ACROSS THE EASTERN UNITED STATES. TOWARDS THE SURFACE, A DOME OF HIGH PRESSURE WILL BE LOCATED ABOVE US TODAY LEADING TO LIGHT AND VARIABLE WINDS. THIS AREA OF HIGH PRESSURE SLIDES EAST OF THE AREA THIS EVENING INTO THE OVERNIGHT WITH LEE TROUGHING REDEVELOPING ACROSS EASTERN COLORADO. OTHERWISE, HIGHS WILL BE WARMER THAN COMPARED TO SATURDAY WITH HIGHS IN THE MID 90S.
645 AM EDT SAT JUN 27 2015 HIGH PRESSURE WILL CREST OVER THE AREA THIS MORNING THEN MOVE EAST OF THE REGION THIS AFTERNOON. LOW PRESSURE WILL APPROACH ON SUNDAY AND TRACK THROUGH THE GULF OF MAINE SUNDAY NIGHT. H5 RIDGE WL BE HOLDING TIGHT SAT EVNG AND FLATTENING AS LEAD S/WV HEADS NORTH INTO MAINE BTWN 06Z AND 12Z. ONE AREA OF LOW PRESSURE WILL TRACK THROUGH NEW YORK STATE AS A SECONDARY LOW ON SUNDAY FORMS IN SOUTHERN NEW ENGLAND AND TRACKS INTO THE GULF OF MAINE.
619 AM EDT SAT JUN 27 2015 HIGH PRESSURE WILL CREST OVER THE AREA THIS MORNING THEN MOVE EAST OF THE REGION THIS AFTERNOON. LOW PRESSURE WILL APPROACH ON SUNDAY AND TRACK THROUGH THE GULF OF MAINE SUNDAY NIGHT. H5 RIDGE WL BE HOLDING TIGHT SAT EVNG AND FLATTENING AS LEAD S/WV HEADS NORTH INTO MAINE BTWN 06Z AND 12Z. ONE AREA OF LOW PRESSURE WILL TRACK THROUGH NEW YORK STATE AS A SECONDARY LOW ON SUNDAY FORMS IN SOUTHERN NEW ENGLAND AND TRACKS INTO THE GULF OF MAINE.
AN AREA OF LOW PRESSURE WILL EXIT THE HOOSIER STATE BY MID DAY. COOLER HIGH PRESSURE WILL BUILD OVER THE AREA TONIGHT AS THE LOW DEPARTS TO THE EAST AND DRY WEATHER WILL PREVAIL THROUGH SUNDAY. THEN A WARM FRONT IS PROJECTED TO PUSH IN TO THE AREA ON SUNDAY NIGHT. COOLER WEATHER WITH BELOW NORMAL TEMPERATURES IS EXPECTED FOR MUCH OF THE UPCOMING WEEK AS NORTHERLY FLOW FROM CANADA SPILLS INTO THE OHIO VALLEY. BROAD CYCLONIC SURFACE FLOW WILL BE IN PLACE AS THE LOW PRESSURE SYSTEM SLOWLY DEPARTS THE REGION. SOUNDINGS AND OBSERVATIONS UPSTREAM SHOW ABUNDANT MOISTURE IN THE LOW TO MID LEVELS THROUGH EARLY THIS AFTERNOON.
443 AM EDT SAT JUN 27 2015 MODELS CONTINUE IN GOOD AGREEMENT IN BRINGING THE COLD FRONT INTO THE CWA TODAY. THE BEST RISK OF SEVERE STORMS WILL BE TODAY WITH THE HIGHEST CAPES OCCURRING ALONG AND AHEAD OF THE FRONT AS IT MOVES ACROSS THE CWA. 17 INITIAL EXTENDED PERIODS CONTINUE WITH A SLIGHTLY COOLER AND DRY AIR MASS OVER THE AREA BEHIND THE SHORT TERM COLD FRONT.
420 AM CDT SAT JUN 27 2015 ANTICIPATED COLD FRONT ALONG THE ARKANSAS-LOUISIANA LINE AT THIS TIME AND ADVANCING SOUTHWARD WITH BAND OF CONVECTION REACHING THE I-20 CORRIDOR. UPPER TROUGH BASES OUT ALONG THE COAST WITH SURFACE FRONT LIKELY TO BECOME STATIONARY OVER OR NEAR THE COASTAL PLAIN BY SUNDAY MORNING.
WATER VAPOR SATELLITE IMAGERY SHOWS AN UPPER LEVEL TROUGH DIGGING INTO THE MIDWEST THIS MORNING. THE COLD FRONT WILL MOVE INTO NORTHERN FLORIDA AND STALL OUT SUNDAY. MOISTURE WILL SPIKE ALONG AND JUST SOUTH OF THE COLD FRONT.
THE LOCAL FORECAST AREA WILL BE SITUATED TO THE SOUTHEAST OF A DEEPENING UPPER TROUGH AND ASSOCIATED COLD FRONT TODAY.
256 AM MDT SAT JUN 27 2015 HIGH PRESSURE WILL REMAIN CENTERED OVER WEST-CENTRAL UTAH THIS WEEKEND KEEPING DEEPER SUBTROPICAL MOISTURE OUTSIDE OF THE FORECAST AREA. WILL FUEL ANOTHER ROUND OF SCATTERED AFTERNOON SHOWERS AND THUNDERSTORMS OVER THE HIGHER TERRAIN. SUBTLE SHIFT IN THE RIDGE WILL PUT THE CENTER OF HIGH PRESSURE JUST ABOUT OVER UTAH AS WE START OFF THE WEEK. FOCUSING OVER THE HIGHER TERRAIN.
ALONG THE LEADING EDGE OF THE UPPER TROUGH AXIS EXTENDING FROM LAKE MI SW ACROSS THE MID MS VALLEY INTO NE AND SCNTRL TX. AND HINTS THAT IT SHOULD DEVELOP FARTHER ESE ALONG THE UPPER TROUGH AXIS AND NEAR/JUST S OF THE ATTENDENT H850 TROUGH. WITH DRIER AIR ENTRAINING S BEHIND THE UPPER TROUGH AXIS LATE TODAY/THIS EVENING. WITH THE WRF/GFS SUGGESTING THE H850 TROUGH PULLING UP STATIONARY JUST S OF I-20. WITH THE WEAK H850 TROUGH EXPECTED TO WASH OUT BY AFTERNOON.
334 AM CDT Sat Jun 27 2015 The latest infrared satellite imagery shows a slow westward expansion of patchy stratus / fog along and south of the Ozark Plateau this morning behind the exiting cold front which has now made its way into central Arkansas and Tennessee. So far wind speeds have been high enough to keep the lower levels mixed and limit fog development, but wind speeds have shown a slowing trend, so will probably need to add fog to the grids/forecast for the early morning.
644 AM EDT SAT JUN 27 2015 A COLD FRONT WILL MOVE THROUGH THE AREA TODAY. FEATURING A RATHER FAST FLOW THRU A DEEP LAYER WITHIN THE DIGGING EASTERN CONUS L/WV TROUGH. NORTH OF FA LATER TODAY ALLOWING THE ENTIRE CWFA TO COME UNDER BROAD WARM SECTOR BEFORE A STOUT COLD FRONTAL PASSAGE TONIGHT. THE PASSAGE OF COLD FRONTAL ZONE IS TIMED FOR SOMETIME TONIGHT AND WITH THE INITIAL INFLUX OF THE CONTINENTAL AIRMASS AND DEVELOPING DOWNSLOPE FLOW. ON SUNDAY MORNING AN UPPER TROUGH WILL BE OVER THE EASTERN HALF OF THE NATION. WITH A RIDGE OVER THE WEST. A CLOSED UPPER LOW WILL BE CROSSING THE EASTERN GREAT LAKES.
237 AM MDT SAT JUN 27 2015 AN UPPER LEVEL HIGH WILL BE CENTERED OVER THE GREAT BASIN WITH NNW FLOW ALOFT OVER THE AREA. AS FOR HIGHS LOOKS LIKE READINGS SHOULD BE 4 TO 5 DEGREES WARMER THAN FRIDAYS LEVELS OVER NERN CO.
1131 PM MDT FRI JUN 26 2015 THE STRENGTHENING GREAT BASIN RIDGE CONTINUES TO FLEX INTO THIS FORECAST AREA WITH HOT AND DRY CONDITIONS.
135 AM EDT SAT JUN 27 2015 LOW PRESSURE WILL STRENGTHEN AS IT MOVES INTO THE AREA TONIGHT. THE LOW WILL SLOWLY CONTINUE NORTHEAST SATURDAY AND SATURDAY NIGHT. HIGH PRESSURE WILL BRIEFLY BUILD IN SUNDAY. LOW PRESSURE IN CENTRAL INDIANA WILL SLOWLY TRACK INTO THE WESTERN PART OF THE FORECAST AREA TOWARDS DAYBREAK. WILL CONTINUE TO SEE SHOWERS WITH EMBEDDED THUNDERSTORMS OUT AHEAD OF THIS LOW THROUGH THE NIGHT. LOW PRESSURE WILL BE OVER THE FORECAST AREA AT THE BEGINNING OF THE PERIOD. A DRY SLOT WILL WORK IN BEHIND THE LOW BUT SHOWERS WILL WRAP AROUND THE NORTH AND WEST SIDE OF THE SYSTEM. AN UPPER TROUGH WILL BE IN PLACE WITH MULTIPLE DISTURBANCES WORKING INTO THE AREA THROUGH THE WEEK.
AN UPPER LEVEL RIDGE DOMINATES THE PATTERN THROUGHOUT THE SHORT TERM PERIOD. THE UPPER LEVEL RIDGE SHOULD BRING DRY CONDITIONS TO THE MAJORITY OF THE CWA. WITH THE POSSIBLE EXCEPTION OF THE HIGH TERRAIN. PWATS REMAIN RELATIVELY HIGH UNDER THE RIDGE. A WEAK AND RELATIVELY DRY COLD FRONT WILL CROSS THE REGION ON TODAY.
A COLD FRONT IS NOW PUSHING SOUTHWARD ACROSS THE MIDSOUTH REGION AND WILL ENTER THE FORECAST AREA LATER THIS MORNING. CONVECTION HAS BEEN ONGOING OVERNIGHT ALONG A PREFRONTAL TROUGH FROM THE ARKLATEX EASTWARD INTO THE ARKLAMISS DELTA. DEWPOINTS WILL MIX OUT INTO THE LOW/MID 60S AND POSSIBLY EVEN UPPER 50S.
A STATIONARY FRONT OVER THE SOUTHERN MID ATLC STATES WILL LIFT NORTH AS A WARM FRONT THROUGH THIS EVENING. A COLD FRONT WILL PASS THROUGH THE AREA LATE TONIGHT.
HOWEVER SOME OF THE HIGH RES MODELS DEVELOP CONVECTION WELL AHEAD OF THE SYSTEM DURING PEAK HEATING THANKS TO DEEP MIXING. WITH TEMPERATURES JUST A TAD COOLER COMPARED TO SATURDAY. A HIGH AMPLITUDE RIDGE OVER THE WESTERN CONUS WILL ALLOW FOR NORTHWEST FLOW ACROSS THE NORTHERN PLAINS. ENERGY RIDING OVER THE TOP OF THE RIDGE WILL DAMPEN THIS FEATURE BY MID WEEK.
948 AM EST MON DEC 7 2015 WEAK LOW PRESSURE WILL BRING LIGHT RAIN CHANCES SOUTH OF I 70 TODAY BEFORE HIGH PRESSURE BUILDS IN TONIGHT AND TUESDAY. SOUTHERN TREND TO PRECIPITATION SHIELD CONTINUES AS UPPER LOW MOVES ACROSS. KEEPING SMALL CHANCES IN THE FAR SOUTHEAST THIS AFTERNOON AS SOME MOISTURE MAY RUN UP THE RIDGES. CL THE LOW SHOULD EXIT THE REGION THIS EVENING. WITH WEAK RIDGING BUILDING TONIGHT AND EARLY TUE. BROAD UPPER RIDGING IS PROGGED TO SET UP THROUGH SAT AS AN UPPER TROUGH DEEPENS ACROSS THE CNTRL CONUS. SHOWER CHCS SHOULD INCREASE AGAIN SUN AND MON AS THE TROUGH REACHES THE UPR OH VALLEY AND GREAT LAKES REGION.
41 LATEST SURFACE ANALYSIS SHOWS A MOISTURE STARVED COLD FRONT PUSHING INTO NW AL WITH MAINLY JUST SOME MID LEVEL CLOUDINESS ALONG AND WELL OUT AHEAD OF THE FRONT. THE MOSTLY DRY COLD FRONT WILL PUSH ACROSS NORTH GA THIS MORNING. WEAK HIGH PRESSURE SETTLES OVER THE AREA TONIGHT. SO LOWS TONIGHT WILL HOLD ABOVE FREEZING FOR MOST LOCATIONS. BUT A LIGHT SOUTHERLY WIND AND AMPLE SUNSHINE WILL ALLOW HIGHS TO CLIMB INTO THE LOWER TO UPPER 60S ON TUESDAY.
WITH DECREASING CLOUDINESS THIS AFTERNOON AS A WEAK COLD FRONT PUSHES ACROSS WEST CENTRAL AND SOUTHWEST FLORIDA WITH SLIGHTLY DRIER COOLER AIR ADVECTING ACROSS THE AREA TONIGHT AND TUESDAY.
ANY THREAT OF SNOWFALL WILL HOLD OFF UNTIL AFTER DARK AND ONLY OVER THE HIGHER REACHES OF THE EASTERN UINTA MOUNTAINS AHEAD OF A SHALLOW.
WEAK SURFACE TROF BISECTS THE DAKOTAS FROM NORTH TO SOUTH. ANOTHER MILD AND DRY DAY IS EXPECTED WITH THE RETURN OF WEAK RIDGING/NEARLY ZONAL UPPER FLOW. BUT SURFACE TEMPS MAY BE CLOSE TO FREEZING BY THE TIME THE PRECIPITATION ARRIVES. SO SOME LIGHT FREEZING RAIN IS POSSIBLE. WHICH WILL DRAG A SURFACE COLD FRONT THROUGH THE NORTHERN PLAINS.
412 AM CST MON DEC 7 2015 SKIES ARE CLEAR ACROSS SOUTHEAST TEXAS EARLY THIS MORNING WITH LOW TEMPERATURES RANGING FROM THE LOWER TO MID 40S INLAND TO THE LOWER TO MID 50S AT THE COAST. EXPECT COOLER TEMPERATURES TO RETURN. 42 A LIGHT NORTHEAST WIND THROUGH THE DAY AS THE OFFSHORE PRESSURE GRADIENT WEAKENS BEHIND YESTERDAY'S WEAK COLD FRONTAL PASSAGE. HIGH PRESSURE BUILDING IN OVER THE WATERS WILL MAINTAIN A LIGHT BECOMING SOUTHEASTERLY FLOW GOING INTO TUESDAY EVENING. HIGH PRESSURE THROUGH MID WEEK WILL GIVE WAY TO A TIGHTENING ONSHORE PRESSURE GRADIENT.
AS AN ANOMALOUS UPPER RIDGE BUILDS ALONG THE EAST COAST. APPROACHING UPPER LOW IS PRODUCING A BATCH OF SHOWERS ACROSS THE OHIO VALLEY AT 11Z. UPPER LOW WILL PUSH EAST OF PA TONIGHT. AS ANOMALOUS UPPER RIDGE BUILDS ALONG THE E COAST. THE EXTENDED FCST APPEARS DRY AND INCREASINGLY WARM BENEATH BUILDING RIDGE. GEFS PLUME DATA AND ECEME MOS SUPPORT MIN TEMPS ABOVE FREEZING ACROSS THE ENTIRE CWA THU-SUN AND MAX TEMPS AT LEAST 15F ABV NORMAL. PUSHING A COLD FRONT INTO PA.
HIGH PRESSURE WILL BUILD INTO THE REGION BEHIND DEPARTING UPPER LEVEL TROUGH TO THE EAST. MODERATING TREND IN TEMPS WILL OCCUR ON TUESDAY WITH HIGHS IN THE LOWER 70S AROUND VICTORIA TO MID/UPPER 70S NEAR LAREDO.
630 AM EST MON DEC 7 2015 LATEST SURFACE ANALYSIS SHOWS A MOISTURE STARVED COLD FRONT PUSHING INTO NW AL WITH MAINLY JUST SOME MID LEVEL CLOUDINESS ALONG AND WELL OUT AHEAD OF THE FRONT. THE MOSTLY DRY COLD FRONT WILL PUSH ACROSS NORTH GA THIS MORNING. WEAK HIGH PRESSURE SETTLES OVER THE AREA TONIGHT. SO LOWS TONIGHT WILL HOLD ABOVE FREEZING FOR MOST LOCATIONS. BUT A LIGHT SOUTHERLY WIND AND AMPLE SUNSHINE WILL ALLOW HIGHS TO CLIMB INTO THE LOWER TO UPPER 60S ON TUESDAY.
LOW PRESSURE IS DEVELOPING JUST OFF THE GA/SC COAST AND WILL PULL NE AWAY FROM THE AREA. DRIER AIR WILL BEGIN TO ADVECT SOUTHWARD INTO THE AREA THIS AFTN AND THIS SHOULD ERODE THE LOW CLOUDS FROM N-S. WEAK LOW PRESSURE IS DEVELOPING JUST OFF THE GA/SC COAST AND WILL PULL NE AWAY FROM THE AREA.
SO HAVE CHANGED THE TIMING ON THE HIGHLIGHTS. ESPECIALLY SINCE LOWS TONIGHT WILL STAY AT FREEZING OR ABOVE.
608 AM EST MON DEC 7 2015 A WEAK COLD FRONT WILL SAG SOUTH FROM CANADA AND MOVE OFFSHORE BY THIS AFTERNOON. HIGH PRESSURE BUILDS IN FROM THE WEST TONIGHT. LOW PRESSURE DEEPENS OFF THE VIRGINIA COAST TUESDAY MORNING AND STAYS SOUTH OF THE GULF OF MAINE AND MOVES NORTHEAST.
416 AM CST MON DEC 7 2015 MINOR TROUGH LOITERING IN W-NW FLOW WILL EXIT THE CENTRAL GREAT PLAINS LATER THIS MORNING AND DELIVER A WEAK COLD FRONT TO OUR NORTHERN ZONES BY MIDDAY. ENOUGH SHARPENING OF A LOW LEVEL THERMAL RIDGE AHEAD OF THE FRONT THANKS TO WESTERLY/DOWNSLOPE WINDS LOOKS SUPPORTIVE OF HIGHS AROUND 10 DEGREES ABOVE NORMAL AHEAD OF THE BOUNDARY. SWATHS OF THICKER HIGH CLOUDS AT TIMES COULD THWART THIS HIGH TEMP STRATEGY IN PLACES.
BRINGING A CHANCE FOR RAIN/FREEZING RAIN TO THE AREA. LIGHT FREEZING RAIN NORTHWEST THROUGH THE SOUTH CENTRAL AND JAMES RIVER VALLEY LATE MONDAY NIGHT INTO TUESDAY MORNING. THE CONSENSUS IS FOR TEMPERATURES TO FALL BELOW FREEZING MONDAY EVENING AND INTO THE EARLY OVERNIGHT. SOME UNCERTAINTY REMAINS REGARDING HOW MUCH FREEZING RAIN WILL OCCUR AS OPPOSED TO JUST RAIN GIVEN THE EXPECTED RISING TEMPERATURE TREND. ROAD TEMPERATURES MAY BE ABLE TO REMAIN JUST BELOW FREEZING EVEN IF AIR TEMPERATURES WARM ABOVE FREEZING TO SUPPORT THE FREEZING RAIN THREAT. AND WILL LET FURTHER SHIFTS EVALUATE SHOULD A FREEZING RAIN ADVISORY BECOME NECESSARY.
VFR TAFS TODAY WITH HIGH PRESSURE SETTLING OVER THE AREA. BROAD HIGH PRESSURE OVER THE AREA WILL DOMINATE IN THE SHORT TERM.
912 AM EST MON DEC 7 2015 A WEAK COLD FRONT WILL SAG SOUTH FROM CANADA AND MOVE OFFSHORE BY THIS AFTERNOON. HIGH PRESSURE BUILDS IN FROM THE WEST TONIGHT. LOW PRESSURE DEEPENS OFF THE VIRGINIA COAST TUESDAY MORNING AND STAYS SOUTH OF THE GULF OF MAINE AND MOVES NORTHEAST.
FAR EAST WILL ALSO BE COOLER TODAY WITH MORE CLOUD COVER. COULD SEE A BRIEF PERIOD OF ZR IN THE AM HOWEVER MODEL TRENDS HAVE BEEN SLOWER IN BRINGING PCPN INTO THE FA SO HOPEFULLY TEMPERATURES WILL HAVE ENOUGH TIME TO RECOVER ABOVE FREEZING BEFORE RAIN MOVES IN IF IT DOES.
RAIN AND SNOW HAS DEVELOPED QUICKLY THIS MORNING ACROSS SE OREGON AND SW IDAHO WITH AREAS OF MODERATE PRECIPITATION ACROSS THE LOWER SNAKE PLAIN AND MTNS TO THE NORTH. LOWER VALLEYS SEE A BRIEF BREAK IN THE PRECIPITATION TONIGHT BEHIND THE PASSAGE OF A SHORT WAVE TROUGH. A WARM FRONT PUSHES THROUGH THE REGION BRINGING ANOTHER ROUND OF MODERATE RAIN/SNOW AND FURTHER RAISING SNOW LEVELS. MILD AND DRY CONDITIONS FOLLOW THE WARM FRONT TUESDAY AFTERNOON WITH TEMPERATURES WELL ABOVE NORMAL ACROSS SE OREGON AND AREAS FROM THE SNAKE PLAIN TO THE ID/NV BORDER.
THE PASSAGE OF A TROUGH LATER THIS WEEK WILL CREATE GUSTY WEST WINDS. COOLER WEATHER.
A VERY WEAK COLD FRONT IS DROPPING SOUTH ACROSS THE AREA EARLY THIS MORNING AND WILL MAINLY BE A WIND SHIFT. HIGH PRESSURE WILL BUILD IN ACROSS THE AREA TODAY. TEMPERATURES ON TUESDAY WILL CLIMB BACK INTO THE 60S ONCE AGAIN AND WITH SOUTHERLY FLOW TUESDAY NIGHT EXPECT WARMER OVERNIGHT LOWS IN THE 40S.
623 AM EST MON DEC 7 2015 WEAK LOW PRESSURE WILL BRING LIGHT RAIN CHANCES SOUTH OF I 70 TODAY BEFORE HIGH PRESSURE BUILDS IN TONIGHT AND TUESDAY. CLOUDS SHOULD INCREASE ESPECIALLY FROM PIT S TODAY AHEAD OF AN APPROACHING UPPER LOW AND ITS ASSOCIATED WEAK SURFACE REFLECTION. TEMPS SHOULD BE ABOVE FREEZING BY THE TIME ANY PCPN BEGINS. THE LOW SHOULD EXIT THE REGION THIS EVENING. WITH WEAK RIDGING BUILDING TONIGHT AND EARLY TUE. BROAD UPPER RIDGING IS PROGGED TO SET UP THROUGH SAT AS AN UPPER TROUGH DEEPENS ACROSS THE CNTRL CONUS. SHOWER CHCS SHOULD INCREASE AGAIN SUN AND MON AS THE TROUGH REACHES THE UPR OH VALLEY AND GREAT LAKES REGION.
516 AM CST MON DEC 7 2015 A TROUGH OF LOW PRESSURE CURRENTLY EXTENDS ACROSS CENTRAL SOUTH DAKOTA.
644 AM EST MON DEC 7 2015 A WEAK AREA OF LOW PRESSURE WILL MOVE ACROSS THE AREA THIS MORNING AND CONTINUE OFF TO THE EAST IN THE AFTERNOON. HIGH PRESSURE WILL BUILD IN TONIGHT AND SLIDE SOUTHEAST ON TUESDAY.
AS AN ANOMALOUS UPPER RIDGE BUILDS ALONG THE EAST COAST.
A LOW PRESSURE SYSTEM WILL DEVELOP OFFSHORE THE SOUTHEAST COAST THIS AFTERNOON AND TRACK NORTHEAST OFF THE CAROLINA COAST TONIGHT AS A POTENT UPPER LEVEL DISTURBANCE TRACKS EASTWARD THROUGH THE MID ATLANTIC. HIGH PRESSURE WILL BUILD INTO THE CAROLINAS FROM THE WEST ON TUESDAY. A LOW PRESSURE SYSTEM WILL DEVELOP OFFSHORE THE SOUTHEAST COAST THIS AFTERNOON. -VINCENT EXPECT DRY/PLEASANT CONDITIONS AS WEAK HIGH PRESSURE BUILDS OVER THE CAROLINAS FROM THE WEST IN THE WAKE OF THE UPPER LEVEL WAVE.
1031 AM EST MON DEC 7 2015 A WEAK COLD FRONT WILL SAG SOUTH FROM CANADA AND MOVE OFFSHORE BY THIS AFTERNOON. HIGH PRESSURE BUILDS IN FROM THE WEST TONIGHT. LOW PRESSURE DEEPENS OFF THE VIRGINIA COAST TUESDAY MORNING AND STAYS SOUTH OF THE GULF OF MAINE AND MOVES NORTHEAST.
636 AM EST MON DEC 7 2015 A WEAK COLD FRONT WILL CROSS THE REGION TODAY.
THAT PROCESS WILL BE MUCH SLOWER AS AN ABUNDANT AREA OF STRATUS WITH CIGS AOB 500 FEET WILL SHIFT SOUTH THROUGH AREA WITHIN WEAK NORTH TO NORTHWEST FLOW IN THE WAKE OF EXITING LOW PRESSURE. WITH THE HIGH CLOUDS EXPECTED TO EXIT AROUND/BY SUNRISE. TODAY IS ACTUALLY LOOKING TO BE ONE OF THE COOLER DAYS HOWEVER. UPPER LEVEL LOW/CIRCULATION WILL BE CLEARING THE EASTERN OHIO VALLEY THIS MORNING. THE WIND FIELDS IN THE LOW LEVELS (SFC. WILL HOLD ON TO THE INHERITED COOLER MAXES NEAR 40 DEGREES BASED ON LIMITED CLEARING/MIXING EXPECTED AND IN LINE WITH LATEST MET GUIDANCE.
1039 AM EST MON DEC 7 2015 DRYING WILL OCCUR AS LOW PRESSURE OFF THE COAST MOVES FARTHER AWAY FROM THE FORECAST AREA.
/ISSUED 235 AM CST MON DEC 7 2015/ WEAK COLD FRONT CURRENTLY ACROSS CENTRAL AND WESTERN LOUISIANA GENERATING PATCHY FOG ACROSS AREAS SOUTH OF INTERSTATE 20. FOG SHOULD DISSIPATE BY MID-MORNING ALLOWING FOR MOSTLY SUNNY SKIES WITH TEMPERATURES FORECAST TO CLIMB INTO THE LOW TO MID 60S. TEMPERATURES OVERNIGHT TO FALL INTO THE LOW TO MID 40S.
656 AM EST MON DEC 7 2015 HIGH PRESSURE REMAINS IN CONTROL TODAY. LOW PRESSURE WILL DEVELOP OFF THE MID-ATLANTIC COAST LATE TONIGHT AND PASS WELL SOUTH AND EAST OF LONG ISLAND ON TUESDAY.
THANKS TO A COLD FRONTAL PASSAGE OVERNIGHT. HIGH PRESSURE WILL BUILD IN ACROSS THE AREA TODAY. TEMPERATURES ON TUESDAY WILL CLIMB BACK INTO THE 60S ONCE AGAIN AND WITH SOUTHERLY FLOW TUESDAY NIGHT EXPECT WARMER OVERNIGHT LOWS IN THE 40S.
A WEAK COLD FRONT IS WASHING OUT AS IT MOVES EAST BEYOND ARA AND LFT. HIGH PRESSURE WILL DOMINATE FROM THE NORTHEAST. PATCHY FOG WILL BECOME POSSIBLE LATE MONDAY NIGHT WITH THE LOWEST CONDITIONS AROUND ARA WITH VLIFR AT TIMES AND LCH WITH OCNL LIFR. SEASONAL TEMPS THIS MORNING IN THE LOWER/MID 40S ACROSS THE REGION. AS THE HIGH MOVES EAST BY TUE. COURSE OF LEAST REGRET THIS FAR OUT IS CONTINUE WITH SUPERBLEND WITH THE HIGHEST POPS LATE SAT/EARLY SUN.
530 AM EST MON DEC 7 2015 WEAK LOW PRESSURE WILL BRING LIGHT RAIN CHANCES SOUTH OF I 70 TODAY BEFORE HIGH PRESSURE BUILDS IN TONIGHT AND TUESDAY. CLOUDS SHOULD INCREASE ESPECIALLY FROM PIT S TODAY AHEAD OF AN APPROACHING UPPER LOW AND ITS ASSOCIATED WEAK SURFACE REFLECTION. TEMPS SHOULD BE ABOVE FREEZING BY THE TIME ANY PCPN BEGINS. THE LOW SHOULD EXIT THE REGION THIS EVENING. WITH WEAK RIDGING BUILDING TONIGHT AND EARLY TUE. BROAD UPPER RIDGING IS PROGGED TO SET UP THROUGH SAT AS AN UPPER TROUGH DEEPENS ACROSS THE CNTRL CONUS. SHOWER CHCS SHOULD INCREASE AGAIN SUN AND MON AS THE TROUGH REACHES THE UPR OH VALLEY AND GREAT LAKES REGION.
CLOUDIER AND COOLER TODAY. THROUGH THE GREAT LAKES AND ON INTO THE LOWER MISSISSIPPI RIVER VALLEY THIS MORNING. WEAK-ISH CLOSED UPPER LOW IS TRAVERSING THROUGH THE LOWER LAKES/OHIO VALLEY BRINGING SOME LIGHT PRECIP THROUGH INDIANA/OHIO. I/VE NUDGED FORECAST HIGHS UP A FEW DEGREES OVER WHAT I INHERITED AND THEY COULD BE EVEN WARMER ANYWHERE THAT DOES SEE SOME SUN. LINGERING LOW CLOUDS/FOG TO START TUESDAY AS ANOTHER UPPER TROUGH MOVES BY TO OUR NORTH.
1012 AM EST MON DEC 7 2015 A WEAK COLD FRONT WILL CROSS THE REGION THIS AFTERNOON.
AS AN ANOMALOUS UPPER RIDGE BUILDS ALONG THE EAST COAST. UPPER LOW WILL PUSH EAST OF PA TONIGHT. AS ANOMALOUS UPPER RIDGE BUILDS ALONG THE E COAST. THE EXTENDED FCST APPEARS DRY AND INCREASINGLY WARM BENEATH BUILDING RIDGE. GEFS PLUME DATA AND ECEME MOS SUPPORT MIN TEMPS ABOVE FREEZING ACROSS THE ENTIRE CWA THU-SUN AND MAX TEMPS AT LEAST 15F ABV NORMAL. PUSHING A COLD FRONT INTO PA.
/ISSUED 412 AM CST MON DEC 7 2015/ SKIES ARE CLEAR ACROSS SOUTHEAST TEXAS EARLY THIS MORNING WITH LOW TEMPERATURES RANGING FROM THE LOWER TO MID 40S INLAND TO THE LOWER TO MID 50S AT THE COAST. EXPECT COOLER TEMPERATURES TO RETURN. 42 A LIGHT NORTHEAST WIND THROUGH THE DAY AS THE OFFSHORE PRESSURE GRADIENT WEAKENS BEHIND YESTERDAY'S WEAK COLD FRONTAL PASSAGE. HIGH PRESSURE BUILDING IN OVER THE WATERS WILL MAINTAIN A LIGHT BECOMING SOUTHEASTERLY FLOW GOING INTO TUESDAY EVENING. HIGH PRESSURE THROUGH MID WEEK WILL GIVE WAY TO A TIGHTENING ONSHORE PRESSURE GRADIENT.
FOG WILL BURN OFF BY MID MORNING AND WITH HIGH PRESSURE IN CONTROL.
A WARM FRONT WILL BRING LIGHT RAIN TO AREAS PRIMARILY NORTH OF CAPE MENDOCINO THROUGH TUESDAY.
STRONGEST WINDS APPEAR TO HAVE SHIFTED BACK TO THE HIGHER MOUNTAIN SLOPES. STILL POCKETS OF WIND MIXING DOWN ALONG THE LOWER FOOTHILLS BUT NOTHING LIKE A FEW HOURS AGO WHEN THERE WAS A MORE AMPLIFIED WAVE. MEANWHILE MOISTURE IS SPREADING BACK ACROSS THE AREA AFTER A BREAK IN THE STRONG SUBSIDENCE BEHIND THE TROUGH AXIS WITH THE WAVE CLOUD REDEVELOPING. BUT THE PLAINS SHOULD JUST HAVE LIGHTER S-W WINDS ON THE RIDGES WITH NOT MUCH IN THE LOW SPOTS. WARMER IN THE WINDIER AREAS AND A BIT LOWER ELSEWHERE.
LIGHT WEST AND SOUTHWEST WINDS 5 TO 15 KNOTS WILL SHIFT TO THE NORTH AND NORTHEAST AFTER THE PASSAGE OF THE TROUGH AND THEN WILL BECOME LIGHT AND VARIABLE 5 TO 10 KNOTS OR LESS BY 22Z TODAY TO 00Z TUESDAY.
A COLD FRONT WILL PUSH THROUGH THE AREA TODAY. THIS WILL USHER IN ANOTHER PUSH OF DRY AND SLIGHTLY COOLER AIR TO CENTRAL ALABAMA. A TROUGH WILL AMPLIFY ACROSS THE WEST AND A RIDGE ALONG AND EAST OF THE APPALACHIANS.
AS A RESULT WE HAVE MAINTAINED THE HIGH WIND WARNING ALONG THE COAST AND THE WINDS ADVISORIES.
607 AM CST MON DEC 7 2015 FOR 12Z TAFS /ISSUED 248 AM CST MON DEC 7 2015/ A BROAD UPPER LEVEL TROUGH CONTINUES TO SLOWLY PUSH EAST ACROSS OHIO AND TN VALLEYS. UPPER LEVEL RIDGING WAS BEGINNING TO BUILD ACROSS THE DESERT SW AND INTO THE PLAINS. A COLD FRONT WAS JUST ENTERING THE FORECAST AREA. AS HIGH PRESSURE AND DRY AIR FILTER INTO THE AREA.
HIGHS TODAY IN THE LOWER 40S DUE TO THE EXPECTED CLOUD COVER WITH LOWS TNT IN THE LOWER TO MIDDLE 30S. TUESDAY MORNING CLOUDS AND LIGHT FOG ARE A LITTLE UNCERTAIN BUT THE LOW LEVEL INVERSION LOOKS WEAKER IN THE FCST SNDGS.
ZONAL FLOW COVERS THE WESTERN CONUS WITH A TROUGH OVER THE OHIO VALLEY. CAUSING A WEAK TROUGH TO MOVE EASTWARD INTO CENTRAL KANSAS. THIS WILL CAUSE YET ANOTHER TROUGH TO DEVELOP AND MOVE EASTWARD. THE MAIN CHANGE WITH THESE WEAK TROUGHS WILL BE THE WIND SHIFT. WESTERLY WINDS WILL HELP AN ALREADY MILD AIRMASS GET WARMER WITH A DOWNSLOPE COMPONENT.
625 AM EST MON DEC 7 2015 AN AREA OF LOW PRESSURE ALONG THE COAST WILL MOVE NORTHEASTWARD AND FARTHER AWAY FROM THE FORECAST TODAY.
RAIN AND SNOW HAS DEVELOPED QUICKLY THIS MORNING ACROSS SE OREGON AND SW IDAHO WITH AREAS OF MODERATE PRECIPITATION ACROSS THE LOWER SNAKE PLAIN AND MTNS TO THE NORTH. LOWER VALLEYS SEE A BRIEF BREAK IN THE PRECIP TONIGHT BEHIND THE PASSAGE OF A SHORT WAVE TROUGH. A WARM FRONT PUSHES THROUGH THE REGION BRINGING ANOTHER ROUND OF MODERATE RAIN/SNOW AND FURTHER RAISING SNOW LEVELS. MILD AND DRY CONDITIONS FOLLOW THE WARM FRONT TUESDAY AFTERNOON WITH TEMPERATURES WELL ABOVE NORMAL ACROSS SE OREGON AND AREAS FROM THE SNAKE PLAIN TO THE ID/NV BORDER.
1035 AM EST MON DEC 7 2015 UPPER LEVEL LOW PRESSURE WILL MOVE EAST ACROSS THE MID-ATLANTIC THIS AFTERNOON AND EVENING.
A BLANKET OF LOW STRATUS COVERS THE ERN ZONES DUE TO WEAK LOW AND TROUGH OFFSHORE THAT PRODUCED DRIZZLE AND SHOWER ACTIVITY OVERNIGHT OVER THE NE AND ERN ZONES. BUT MAY GET A BUMP UP AS NLY WINDS PICK UP IN THE WAKE OF TROUGH PULLING AWAY FROM SHORE.
THIS SHOULD STRENGTHEN SFC WINDS ENOUGH MIX THE BOUNDARY LAYER ENOUGH TO ERODE THE LOW LEVEL MOISTURE. TROUGH WILL DROP INTO IOWA TUESDAY WITH CHANCES OF PRECIPITATION.
/ISSUED 416 AM CST MON DEC 7 2015/ MINOR TROUGH LOITERING IN W-NW FLOW WILL EXIT THE CENTRAL GREAT PLAINS LATER THIS MORNING AND DELIVER A WEAK COLD FRONT TO OUR NORTHERN ZONES BY MIDDAY. ENOUGH SHARPENING OF A LOW LEVEL THERMAL RIDGE AHEAD OF THE FRONT THANKS TO WESTERLY/DOWNSLOPE WINDS LOOKS SUPPORTIVE OF HIGHS AROUND 10 DEGREES ABOVE NORMAL AHEAD OF THE BOUNDARY. SWATHS OF THICKER HIGH CLOUDS AT TIMES COULD THWART THIS HIGH TEMP STRATEGY IN PLACES.