Aikyam-Lab/Synoptic-Bench huggingface dataset:
AN UPPER LEVEL TROUGH DIGGING INTO THE SE US WILL QUICKLY LIFT TOWARDS THE MID ATLANTIC BY THE END OF THE PERIOD. A BROAD AREA OF LOW PRESSURE WILL CONTINUE TO TRACK NORTHEAST ACROSS THE STATE THROUGH TODAY AND QUICKLY UP THE EASTERN COASTLINE AS THE UPPER LEVEL TROUGH EJECTS TOWARDS THE NORTH ATLANTIC. MAIN HEADLINE WOULD BE THE COOLER TEMPERATURES FORECAST TO ADVECT INTO THE AREA BEGINNING EARLY TOMORROW MORNING. LOWS IN THE MORNING EXPECTED TO DROP INTO THE LOW 60S ACROSS THE NATURE COAST AND UPPER 60/LOW 70S FURTHER SOUTH. POSSIBLE COOLER IF WE ARE ABLE TO RADIATE A BIT MORE.
A SOUTHERN STREAM LOW IS CURRENTLY PUSHING EWD TOWARD THE ATLANTIC COAST AS A NORTHERN STREAM CLOSED LOW TRACKS SWD FROM THE GREAT LAKES REGION. THE CLOSED LOW WILL QUICKLY APPROACH EAST KENTUCKY AND THEN MOVE OVER OUR AREA BY TOMORROW AFTERNOON AND EVENING WITH PLENTY OF MID LEVEL ENERGY AND A CORE OF COLDER 500 MB TEMPS.
AS THE TROUGH DEPARTS. LOW PRESSURE WILL BEGIN TO DEPART TO THE NE. WITH DRIER NW FLOW WORKING INTO THE AREA AS HIGH PRESSURE BEGINS TO MAKE AN APPROACH FROM THE W/NW.
103 PM EDT WED APR 29 2015 HIGH PRESSURE WILL WEAKEN TODAY. AN UPPER LEVEL LOW PRESSURE SYSTEM WILL DROP SOUTH ACROSS THE CENTRAL GREAT LAKES LATER TODAY TO THE TENNESSEE VALLEY ON THURSDAY.
105 PM MDT WED APR 29 2015 A RIDGE WILL RESIDE OVER THE ROCKIES/PLAINS TONIGHT AND THURSDAY.
1206 PM MDT WED APR 29 2015 QUIET WEATHER TODAY INTO THURSDAY AS AN UPPER RIDGE MOVES ACROSS THE REGION. WARMER TODAY WITH HIGHS REACHING INTO THE 70S ACROSS MUCH OF THE PLAINS UNDER SUNNY SKIES AND 700H TEMPS WARMING TO AROUND 5-8C. FRONT A LITTLE SLOWER THAN EARLIER PROGGED THUS MAX TEMPS THURSDAY A LITTLE WARMER AS A RESULT. UPSLOPE FLOW BEHIND THE FRONT SHOULD SET OFF AT LEAST SCTD SHOWERS AND A FEW TSTRMS INITIALLY OVER THE HIGHER TERRAIN OF SE WY DURING THE AFTERNOON WITH ACTIVITY MOVING EAST OVER THE PLAINS THROUGH THE EVENING HOURS.
146 PM EDT WED APR 29 2015 UPPER LOW IS OVERHEAD AND MOVING EAST. /39 UPPER LOW PRESSURE OVER THE NORTHERN GULF WILL MOVE EASTWARD TODAY. EXPECT WIDESPREAD SHOWERS AND A FEW THUNDERSTORMS DURING THE DAY BUT COVERAGE SHOULD DIMINISH FROM THE SOUTHWEST THIS AFTERNOON AND EVENING AS THE LOW MOVES EAST.
AS THIS AREA OF HIGH PRESSURE CONTINUES TO SLIDE TOWARDS THE REGION. THESE CONDITIONS WILL SET THE STAGE FOR EXCELLENT RADIATIONAL COOLING AND ALLOW OVERNIGHT LOW TEMPERATURES TO FALL INTO THE LOW TO MID 50S.
MODEL SOUNDINGS INDICATE A MOIST LAYER AROUND 850 TO 700 MB WILL OVERSPREAD MUCH OF THE LOWER OHIO VALLEY AHEAD OF THIS FEATURE. THE UPPER LOW WILL CONTINUE SOUTH/SOUTHEAST ACROSS EASTERN KENTUCKY. THIS MAY BE DEEP ENOUGH FOR SOME ISOLATED SHOWERS CLOSER TO THE UPPER LOW. HIGHS SHOULD BE SEVERAL DEGREES COOLER THAN TODAY.
355 PM EDT WED APR 29 2015 LOW PRESSURE EAST OF NOVA SCOTIA WILL MOVE TO THE EAST TONIGHT. HIGH PRESSURE WILL THEN BUILD ACROSS THE REGION LATER THURSDAY THROUGH THE WEEKEND. A BROAD CLOSED UPPER LOW THAT HAS AFFECTED THE AREA FOR NEARLY A WEEK WILL CONTINUE TO INFLUENCE FORECAST AREA WEATHER TONIGHT AND TOMORROW. THE UPPER LOW WILL FILL AND MOVE EASTWARD THROUGH THE PERIOD. WINDS WILL CONTINUE TO DECREASE AS HIGH PRESSURE BUILDS THROUGH THE PERIOD. WEAK IMPULSES MOVING AROUND THE UPPER LOW WILL GENERATE THE THREAT OF LIGHT RAIN SHOWERS THROUGH THURSDAY WITH AMOUNTS OF JUST A HUNDREDTH OF AN INCH OR SO.
557 PM EDT WED APR 29 2015 AVIATION LOW PRESSURE DROPPING SOUTH THROUGH MICHIGAN TONIGHT AND THURSDAY WILL PRODUCE CONSIDERABLE CLOUDINESS AND POSSIBLY A FEW LIGHT RAIN SHOWERS.
UPPER RIDGING WILL CONTINUE TO NOSE EASTWARD ACROSS THE DAKOTAS TODAY.
1231 PM CDT WED APR 29 2015 NEARLY PERFECT SPRING DAY ACROSS THE REGION TODAY AS DRY HIGH PRESSURE BUILDS INTO THE REGION LEADING TO CLEAR SKIES AND LIGHT WINDS THROUGHOUT THE DAY. MODELS ARE STILL SHOWING SOME RAINFALL ASSOCIATED WITH A WEAK COLD FRONT.
500MB RIDGE ACROSS THE WESTERN UNITED STATES WILL MOVE EASTWARD TODAY AS A 500MB TROUGH ACROSS THE SOUTHEAST U. HIGH PRESSURE ACROSS THE CENTRAL U. TEMPERATURES WILL CONTINUE TO BE BELOW NORMAL TODAY THROUGH THURSDAY AS HIGH PRESSURE SETTLES ACROSS THE COASTAL BEND TONIGHT INTO THURSDAY.
120 PM EDT WED APR 29 2015 WEAK HIGH PRESSURE OVER THE GREAT LAKES WILL KEEP MAINLY CLEAR SKIES AND MILD WEATHER ACROSS THE REGION THIS AFTERNOON. A WEAK LOW PRESSURE SYSTEM DROPPING ACROSS THE UPPER GREAT LAKES INTO THE MAINLY TO THE SOUTHERN TIER. A WEAK HIGH PRESSURE WILL BE IN CONTROL THIS AFTERNOON. BUT WITH 850 MB TEMPERATURES RUNNING SLIGHTLY HIGHER / APPROACHING +6C/ AND FAVORING SLIGHTLY WARMER HIGH TEMPERATURES THAN PERSISTENCE. INCREASING CLOUD COVER AND A CONTINUED MILD AIRMASS WILL KEEP OVERNIGHT LOW TEMPERATURES IN THE LOW 40S. UNEVENTFUL WEATHER WILL BE FOUND ACROSS THE LOWER GREAT LAKES DURING THIS PERIOD.
302 PM CDT WED APR 29 2015 WATER VAPOR AND OVERLAY OF 12Z RAOB DATA INDICATES TROUGHING IN THE EAST AND RIDGING IN THE WEST WITH NORTHERLY FLOW IN BETWEEN ACROSS THE CENTRAL STATES. MODEL GUIDANCE SHOWS A DEAMPLIFICATION OF THE FLOW PATTERN WITH A GRADUAL INCREASE IN MID LEVEL HEIGHTS ACROSS OUR AREA AS WEAKENING UPPER LEVEL RIDGE MOVES OUR WAY. LEE TROUGH CONTINUES TO STRENGTHEN TOMORROW SUFFICIENT ENOUGH FOR SOUTHERLY WINDS AROUND 10 TO 15 MPH.
337 PM EDT WED APR 29 2015 AN UPPER LEVEL LOW PRESSURE SYSTEM WILL DROP SOUTH ACROSS THE CENTRAL GREAT LAKES LATER TONIGHT AND MOVE TO THE TENNESSEE VALLEY ON THURSDAY.
1233 PM CDT WED APR 29 2015 STRONG HIGH PRESSURE CONTINUES TO BUILD OVER THE PLAINS. HIGH PRESSURE WILL CONTINUE TO BUILD EASTWARD THURSDAY MORNING. WITH KHOT BEING THE LOWER OF THE TWO. AND KLLQ THIS AFTERNOON AS THE LOW LEVEL AIR MASS WILL BE WELL MIXED.
CURRENT WATER VAPOR IMAGE SHOWS A WEAK UPPER TROUGH APPROACHING THE AREA. THE UPPER TROUGH WILL MOVE EAST TONIGHT AND RIDGING WILL BUILD SOUTHWEST OF THE FORECAST AREA WITH A WEAK WESTERLY FLOW ALOFT OVER OUR AREA. AT THE SURFACE, A THERMAL TROUGH WILL DEVELOP WITH INCREASING OFFSHORE FLOW TONIGHT THROUGH THURSDAY. AS A RESULT, MAX TEMPERATURES AT BROOKINGS WILL LIKELY GET NEAR OR INTO THE LOWER 80S. ELSEWHERE TEMPERATURES WILL END UP WARMER THAN TODAY AND WILL BE ABOVE NORMAL.
309 PM EDT WED APR 29 2015 WEAK HIGH PRESSURE OVER THE NORTHEAST US WILL SLOWLY MOVE EAST AS LOW PRESSURE DEVELOPS OVER THE MID ATLANTIC REGION ON THURSDAY. WEAK HIGH PRESSURE OVER THE NORTHEAST US WILL SLOWLY MOVE EAST TONIGHT WITH LOW PRESSURE DEVELOPING OVER THE MID ATLANTIC REGION ON THURSDAY. SOME HIGHER CLOUDS WILL CONTINUE TO STREAM NORTHEAST AS A NORTH CENTRAL GREAT LAKES UPPER LEVEL LOW DROPS SOUTH AND SETTLES INTO THE OH VALLEY SPAWNING THE ABOVE MENTIONED WEAK LOW PRESSURE TO OUR SOUTH. UNEVENTFUL WEATHER WILL BE FOUND ACROSS THE LOWER GREAT LAKES DURING THIS PERIOD.
437 PM MDT WED APR 29 2015 HIGH PRESSURE RIDGE WILL BRING CLEAR SKIES TONIGHT THOUGH SOME HIGH CLOUDS WILL BE PUSHING INTO NE UT/NW CO BY MORNING. TEMPS WILL BE A BIT WARMER TONIGHT THAN LAST NIGHT AS THE 700 MB THERMAL RIDGE SHIFTS OVERHEAD. A STREAM OF H5 VORTICITY AHEAD OF AN UPPER LEVEL LOW WILL BRING CLOUDINESS TO NE UTAH AND NW COLORADO THURSDAY MORNING. AND THEN HELP TO INITIATE SHOWERS AND THUNDERSTORMS ACROSS THESE AREAS AND OVER THE MOUNTAINS THROUGHOUT THE AFTERNOON AS THE ENERGY STREAMS CLOCKWISE AROUND THE PREVAILING HIGH PRESSURE. A PASSING SHALLOW COLD FRONT ACROSS THE NORTHERN US ROCKIES WILL LEAVE AN EAST TO WEST ORIENTED PIECE OF WEAK ENERGY JUST NORTH OF UTAH AND COLORADO BY THURSDAY NIGHT.
AN UPPER LEVEL LOW PRESSURE SYSTEM WILL DROP SOUTHWARD FROM MICHIGAN. THIS SYSTEM WILL ALSO BRING A SHOT OF SLIGHTLY COOLER AIR. SO HIGHS TOMORROW WILL BE A FEW DEGREES COOLER. OVERNIGHT LOWS WILL CONTINUE THE COOLER THAN NORMAL TREND. AS A RIDGE BUILDS ACROSS THE REGION. HIGHS WILL BE MOSTLY IN THE LOWER 80S.
A BEAUTIFUL DAY IS ON TAP FOR NORTH DAKOTA AS UPPER LEVEL RIDGING MOVES INTO THE AREA. WITH WARMER TEMPERATURES AND WINDS GUSTING TO NEAR 30 MPH. MODELS ARE HINTING AT MOISTURE POOLING AHEAD OF AN APPROACHING COLD FRONT. WHERE THE HIGHEST WINDS ARE EXPECTED. SO TO THE HIGHEST DEW POINTS. A COLD FRONT WILL BE KNOCKING ON OUR DOOR. THIS TROUGH WILL BRING A WEAK COLD FRONTAL PASSAGE AND A CHANCE FOR SHOWERS TO THE REGION.
223 PM EDT WED APR 29 2015 A LOW PRESSURE SYSTEM WILL MOVE ALONG THE GEORGIA AND SOUTH CAROLINA COAST TONIGHT AND EARLY THURSDAY.
552 PM EDT WED APR 29 2015 COLD FRONT MOVING THROUGH THIS EVENING AND TONIGHT WILL BRING A SMALL CHANCE FOR RAIN TO THE REGION. AN UPPER LEVEL LOW WILL MOVE THROUGH TOMORROW BRINGING ANOTHER LOW CHANCE FOR SOME RAIN. FORECAST PERIOD TO BEGIN WITH DEPARTING UPPER LOW SOUTH OF THE CWA SHEARING OUT AND SLIDING TOWARD THE MID ATLANTIC COAST. 120M HEIGHT RISES IN ITS WAKE THURSDAY NIGHT AS SHORT WAVE RIDGING QUICKLY FILLS IN BEHIND AND SETS THE STAGE FOR A NOTICEABLE WARMING TREND INTO THE WEEKEND.
SHORT TERM: (Through This Afternoon) Midlevel closed low currently over SE Iowa will dive southward today. Expect highs to be generally in the low 70s. or a degree or two warmer than yesterday in most locations. Another closed low toward the end of the period will swing southward into the Great Lakes region. Did maintain some schc PoPs toward early evening in IL as DCPVA increases ahead of aforementioned cyclone collocated with weak sfc convergence along subtle inverted trough.
456 PM EDT WED APR 29 2015 LOW PRESSURE WILL GRADUALLY MOVE OFF TO THE EAST TONIGHT THROUGH THURSDAY.
239 PM EDT WED APR 29 2015 LOW PRESSURE WILL GRADUALLY MOVE OFF TO THE EAST TONIGHT THROUGH THURSDAY.
UNDER THE INFLUENCE OF A STRENGTHENING UPPER RIDGE. TEMPERATURES WILL ONCE AGAIN WARM INTO THE 70S AND COULD EVEN REACH THE LOWER 80S IN THE FAR WEST ON THURSDAY.
HIGH PRESSURE WILL BRING DRY CONDITIONS TO NORTHWEST CALIFORNIA THE REST OF THIS WEEK. AN UPPER LEVEL TROUGH TRAVERSING ACROSS THE PACIFIC NORTHWEST WILL BRING MOSTLY CLEAR SKIES AND BREEZY CONDITIONS TO NORTHWEST CALIFORNIA THROUGH THE REMAINDER OF THE AFTERNOON.
243 PM CDT WED APR 29 2015 AN UPPER LEVEL LOW WAS OVER EASTERN LAKE SUPERIOR THIS AFTERNOON WITH ANOTHER UPPER LEVEL LOW OVER SOUTHEAST MO. THE UPPER LEVEL LOW OVER EASTERN LAKE SUPERIOR WILL TRACK SOUTHWARD INTO EAST CENTRAL INDIANA BY NOON THU AND TO BE THE DOMINANT WEATHER SYSTEM TO AFFECT CENTRAL/SE IL NEXT 24 HOURS ESPECIALLY EASTERN IL. WILL KEEP A SLIGHT CHANCE OF ISOLATED SHOWERS IN THE EAST FOR THURSDAY AS THE UPPER LOW MOVES SOUTH.
346 PM CDT Wed Apr 29 2015 It was a warm, spring afternoon across the region as upper level ridge continues to build eastward over the plains, while minor mid level perturbations were generating scattered to broken clouds across parts of central Kansas. Forecast lows are expected to be pretty similar to this morning in the lower to middle 40s. On Thursday, much of eastern Kansas remains under the influence of the high pressure while a lee trough develops over western Kansas.
A WEAK COLD FRONT WILL CROSS NORTHERN UTAH TONIGHT AND SETTLE INTO CENTRAL UTAH TOMORROW.
332 PM CDT WED APR 29 2015 RIDGE OF HIGH PRESSURE OVER THE AREA FOR THE NEXT 24 HOUR TO KEEP WEATHER CONDITIONS FAIRLY QUIET WITH LIGHT WINDS SLOWLY SWITCHING FROM NORTHEAST TO SOUTHEAST. WITH WARMER TEMPERATURES TOWARDS THE WEST AND MAINLY LOWER 60S OVER NORTHWEST WISCONSIN WHERE A LITTLE MORE CLOUD COVER AND THE LINGERING RIDGE KEEPS MIXING SHALLOWER. THE UPPER RIDGE WILL BREAK DOWN AND MOVE EAST WHICH WILL SIGNIFY A BIG CHANGE IN THE WEATHER PATTERN FROM HIGH AMPLITUDE WAVES TO MORE FAST ZONAL FLOW WITH EMBEDDED SHORT WAVES.
A WEAK LOW PRESSURE TROUGH WILL DEVELOP AND CONTINUE NEAR THE WEST COAST FOR THE END OF THE WEEK AND THIS WEEKEND. HOWEVER MOST AREAS WILL SEE SLIGHTLY COOLER HIGH TEMPERATURES ON THURSDAY.
349 PM EDT WED APR 29 2015 CLOSED LOW OVER NORTHERN LAKE SUPERIOR WILL CONTINUE TO PROPAGATE DUE SOUTH ROUGHLY PARALLEL TO THE EASTERN LAKE MICHIGAN SHORELINE THROUGH THE SHORT TERM PERIOD. 5 C/KM OR BETTER LEADS THE LOW THE CENTER BY 150 MILES OR SO AND IS SUPPORTING AN AGITATED CU FIELD ACROSS THE NORTHWEST CWA ALONG ITS LEAD EDGE. DEEP LAYER DEFORMATION IS FORECAST TO INTENSIFY WITHIN THE SOUTHEAST QUADRANT OF THE LOW THROUGH THE NIGHT, A PROCESS JUST GETTING UNDERWAY AS EVIDENCED BY COOLING CLOUD TOPS OVER SOUTHWEST LOWER BETWEEN 17Z-20Z. THURSDAY THROUGH NEXT WEDNESDAY WELL DEFINED CLOSED UPPER LOW WILL ADVANCE SOUTH OVER THE OHIO VALLEY REGION ON THURSDAY. AS THE UPPER LOW EXITS STAGE SOUTH. THIS WAVE WILL PILE INTO THE NORTHERN PLAINS RIDGE.
1228 PM CDT WED APR 29 2015 LATEST WATER VAPOR SATELLITE IMAGERY SHOWS UPPER LEVEL RIDGE OVER THE ROCKY MOUNTAINS AND UPPER LEVEL TROUGH OVER SOUTHERN ONTARIO. 00Z GFS/NAM ARE IN GOOD AGREEMENT IN TRACKING UPPER LEVEL TROUGH OVER SOUTHERN ONTARIO INTO THE GREAT LAKES REGION THIS AFTERNOON AND INTO TONIGHT. 00Z GFS/NAM BUFKIT SOUNDINGS CONTINUE TO SHOW STEEP LOW LEVEL LAPSE RATES AND WEAK LOW LEVEL MOISTURE CONVERGENCE WITH THE UPPER LEVEL TROUGH. EXPECT HIGH TEMPERATURES THURSDAY TO BE A COUPLE TO A FEW DEGREES COOLER THAN TODAY. MAINLY IN THE LOWER TO MIDDLE 60S.
501 PM EDT WED APR 29 2015 LOW PRESSURE EAST OF NOVA SCOTIA WILL MOVE TO THE EAST TONIGHT. HIGH PRESSURE WILL THEN BUILD ACROSS THE REGION LATER THURSDAY THROUGH THE WEEKEND. ORGNL DISC: A BROAD CLOSED UPPER LOW THAT HAS AFFECTED THE AREA FOR NEARLY A WEEK WILL CONTINUE TO INFLUENCE FORECAST AREA WEATHER TONIGHT AND TOMORROW. THE UPPER LOW WILL FILL AND MOVE EASTWARD THROUGH THE PERIOD. WINDS WILL CONTINUE TO DECREASE AS HIGH PRESSURE BUILDS THROUGH THE PERIOD. WEAK IMPULSES MOVING AROUND THE UPPER LOW WILL GENERATE THE THREAT OF LIGHT RAIN SHOWERS THROUGH THURSDAY WITH AMOUNTS OF JUST A HUNDREDTH OF AN INCH OR SO.
UPPER TROUGH WORKING THROUGH IDAHO/WESTERN MONTANA TODAY WITH OUR UPPER WINDS BACKING WITH ITS APPROACH. SOME DECENT DESTABILIZATIONAHEAD OF THE ASSOCIATED COLD FRONT IS PROGGED TO OCCUR LATE TODAY IN OUR FAR WESTERN ZONES. THE COLD FRONT IS EXPECTED INTO BILLINGS AROUND 10 PM THIS EVENING.
RIDGING IS SETUP OVER THE ROCKIES. HIGH PRESSURE RIDGE EXTENDS FROM THE NORTHERN MISSISSIPPI VALLEY INTO SOUTHWEST TX. WEAK LOW PRESSURE IS SITUATED ACROSS THE NORTHERN ROCKIES. THE UPPER LOW OVER THE GREAT LAKES WILL CONTINUE TO DIVE SOUTH AND WILL BE OVER THE OHIO VALLEY BY THU MORNING AND THE TENNESSEE VALLEY BY THU EVENING. WARMING TREND WILL CONTINUE FOR THU WITH AREAS WEST OF I-135 GETTING INTO THE LOW 80S WITH THESE ABOVE NORMAL TEMPS PERSISTING INTO SAT. WOULD EXPECT STORMS TO AT LEAST DEVELOP OVER THE HIGH PLAINS TUE AFTERNOON/EVENING ALONG THE DRYLINE AND LIFT NORTHEAST OVERNIGHT AND POSSIBLY AFFECT OUR FORECAST AREA.
250 PM EDT WED APR 29 2015 HIGH PRESSURE WILL BRING MOSTLY SUNNY SKIES AND SEASONABLE TEMPERATURES TO NY AND PA TODAY.
410 AM CST WED FEB 17 2016 Northwest flow aloft will continue through much of Wednesday before a western ridge enters the area through Thursday. Southerly surface flow will begin the warming trend today with highs peaking in the in the mid to upper 50s for areas south of the I-70 corridor, with areas north staying in the low to mid 40s underneath lingering cloud cover.
SHOWERS ARE EXPECTED INTO THURSDAY MORNING AS AN UPPER LEVEL TROUGH MOVES THROUGH THE AREA.
401 AM PST WED FEB 17 2016 A COLD FRONT WILL MOVE INLAND ACROSS SOUTHERN CALIFORNIA ON THURSDAY. IT WILL BE NOTICEABLY COOLER TODAY AND THURSDAY AS CLOUDS WILL BE ON THE INCREASE.
HOWEVER THE POTENTIAL WILL STILL EXIST FOR SOME LATE NIGHT OR EARLY MORNING LOW CLDS AS THE LOW LEVEL MOISTURE ADVECTION CONTINUES. DEEP 500 MB TROFFING OVER THE EASTERN HALF OF THE COUNTRY WILL SHIFT EAST WED AND THURS. THIS WILL ALLOW 500 MB RIDGING TO BUILD OVER SOUTHERN TX/NORTHERN MEX AND THE GULF OF MEXICO. A 500 MB TROUGH AXIS WILL DIG ACROSS THE WEST COAST OF THE U. VERY LIMITED DEEP LAYER MOISTURE VALUES DUE TO THE 500 MB RIDGING WILL ALSO ALLOW FOR PLENTY OF SUNSHINE WHICH WILL KEEP THE TEMPS GRADUALLY WARMING THROUGHOUT TODAY AND TOMORROW. WILL GO AT OR ABOVE THE WARMER MAV AND ECMWF NUMBERS AS THESE APPEAR TOO CONSERVATIVE CONSIDERING THE STRENGTH OF THE 500 MB RIDGING MOVING IN PLACE OVER THE AREA.
WEDNESDAY WILL SEE TEMPS INCREASE 10 DEGREES FROM YESTERDAY WITH LESS CLOUD COVER AND LIGHT SOUTHWEST WINDS AS THE UPPER LEVEL RIDGE OVER THE WESTERN US SHIFTS CLOSER TO THE AREA. WITH THE RIDGE OVERHEAD.
CHATTANOOGA AIRPORT, TN 49 32 58 37 / 10 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 42 29 51 33 / 10 10 0 0 OAK RIDGE, TN 42 29 54 33 / 10 10 0 0 TRI CITIES AIRPORT, TN 41 27 48 28 / 10 10 0 0.
HIGH PRESSURE RIDGE AND AXIS MOVES EAST TODAY AND WILL BE SITUATED OVER SOUTH CENTRAL MONTANA TODAY. LEE-SIDE TROUGHING BEGINS TO SET UP ONCE AGAIN BY LATE THIS AFTERNOON RESULTING IN TIGHTENING PRESSURE GRADIENTS FOR THE UPPER YELLOWSTONE AND STILLWATER VALLEYS. EXPECT EVEN WARMER TEMPERATURES THURSDAY WITH PRE-FRONTAL WARMING ALLOWING READINGS TO CLIMB INTO THE UPPER 50S TO POSSIBLY MIDDLE AND UPPER 60S.
A REINFORCING COLD FRONT HAS CLEARED ALL TAF SITES. DRY AIR IN THE LOW LEVELS WILL CONTINUE TO FILTER IN DURING THE DAY PROVIDING VFR CONDITIONS. THEN GRADUALLY DIMINISH AND SHIFT MORE EASTERLY BY EVENING AS THE HIGH SHIFTS EAST.
A DEEP UPPER TROUGH OVER THE EASTERN PACIFIC WILL WORK TOWARDS THE WESTERN U. THIS SYSTEM WILL PUSH A COLD FRONT INTO WESTERN OREGON THIS AFTERNOON. WEAK HIGH PRESSURE WILL MOVE OVER THE REGION THURSDAY NIGHT CAUSING A DECREASE IN THE SHOWER ACTIVITY.
STRONG SW FLOW ALOFT AHEAD OF AN APPROACHING TROUGH WILL CONTINUE TODAY THROUGH MIDDAY THU. AS THE TROUGH FLATTENS. WHAT IS LEFT OF IT/S AXIS MOVES THROUGH THU AND PUSHES A COLD FRONT THROUGH EARLY IN THE DAY. THIS TROUGH. WITH POST-FRONTAL COOLER AIR STREAMING IN AND WIDESPREAD SHOWERS. WILL BE MUCH COOLER.
1009 AM EST WED FEB 17 2016 AN AREA OF WEAK LOW PRESSURE WILL MOVE OUT TO SEA TODAY.
IMPRESSIVE WARM ADVECTION CONTINUES TONIGHT AS UPPER RIDGE SHIFT INTO THE FA. REGION TRANSITIONS INTO MID LEVEL SW FLOW THURSDAY AS NEXT MAIN UPPER TROUGH MOVES ON SHORE.
538 AM EST WED FEB 17 2016 A COLD FRONT WILL PUSH SOUTHEAST ACROSS CENTRAL PA TODAY. HIGH PRESSURE WILL FOLLOW FOR THURSDAY WITH MORE IN THE WAY OF SUNSHINE.
421 AM MST WED FEB 17 2016 EARLY MORNING WV IMAGERY AND RAP UPPER LEVEL ANALYSIS SHOW LARGE SCALE RIDGE ACROSS WESTERN US WITH NW FLOW ACROSS THE PLAINS.
933 AM EST WED FEB 17 2016 A WEAK COLD FRONT WILL CROSS THE AREA THIS AFTERNOON.
638 AM EST WED FEB 17 2016 A SURFACE FRONT WILL MOVE THROUGH THE AREA THIS MORNING FOLLOWED BY A STRONGER COLD FRONT LATE TONIGHT. HIGH PRESSURE THEN BUILDS INTO THE REGION THROUGH THE END OF THE WEEK. CLD AIR IS INVADING THE STATE FM THE NORTH IN THE WAKE OF THE FIRST COLD FRONTAL PASSAGE. SFC TROF AKA DWPT FRONT IS CURRENTLY BISECTING CWA AS OF 07Z. H5 TROF SCOOTING ACRS ONTARIO WL BRING INCREASING CLDS OVR NW ZONES TONIGHT AS WELL AS A CHC FOR SNOW SHOWERS IN UPSLOPE AREAS.
THE LOW CLOUDS WILL PERSIST OVER THE REGION FOR MUCH OF THE DAY.
THE LOW LEVEL JET IS PROGD TO STRENGTHEN OVERNIGHT WHICH SHOULD HINDER FOG FROM BECOMING DENSE. THE LOW LEVEL JET IS PROGD TO STRENGTHEN OVERNIGHT WHICH MAY LEAD TO A MIX OF STRATUS AND FOG WITH VSBYS REMAINING GENERALLY ABV 1SM. ONSHORE SFC WINDS ARE PROGD TO STRENGTHEN ON THU IN RESPONSE TO DEEPENING LOW PRESSURE ALONG THE ROCKIES.
On Thursday a fast moving cold front will move across north- central Idaho near daybreak and track into western Montana between 7 and 11 am MST. A second round of precipitation will move into the region by Thursday evening as the main Pacific trough ejects eastwards and tracks northeastwards along the Canadian border.
JE COLD FRONT HAS MOVED OUT OF THE WATERS BUT WILL RETURN THURSDAY AS A WARM FRONT. IN THE MEANTIME WINDS FLUCTUATING AROUND 15 KNOTS AND MAY EDGE UP TO 15-20 KT EARLY THIS AFTERNOON ON THE HIGH END IN THE FAR COASTAL WATERS.
HIGH PRESSURE WILL DELIVER DRY CONDITIONS AND WELL ABOVE NORMAL TEMPERATURES THROUGH WEDNESDAY.
455 AM CST WED FEB 17 2016 Northwest flow aloft will continue through much of Wednesday before a western ridge enters the area through Thursday. Southerly surface flow will begin the warming trend today with highs peaking in the in the mid to upper 50s for areas south of the I-70 corridor, with areas north staying in the low to mid 40s underneath lingering cloud cover.
A relatively quiet day is expected across the area weather-wise with high pressure settling into the eastern United States. Dry air through the depth of the troposphere should yield a sunny day, and temperatures will be fairly close to normal overall - ranging from the mid-60s north and west to the lower 70s in the eastern Florida Big Bend.
330 AM MST WED FEB 17 2016 AXIS OF HIGH PRESSURE WILL MOVE OVERHEAD TODAY AS A STRONG TROUGH MOVES ONSHORE THE PACIFIC NORTHWEST. TONIGHT WILL BE VERY MILD WITH STRONG SOUTHWEST FLOW IN PLACE AHEAD OF THE COLD FRONT. BLOWING SNOW IS POSSIBLE ACROSS THE HIGHER MOUNTAIN AREAS WHERE SNOW IS LESS DENSE. AROUND SUNSET THURSDAY THE SURFACE COLD FRONT WILL HAVE ALREADY MOVED THROUGH EASTERN UT AND SHOULD BE SWEEPING THROUGH WESTERN CO.
702 AM EST WED FEB 17 2016 A SECONDARY COLD FRONT WILL MOVE ACROSS THE AREA TODAY.
917 AM EST WED FEB 17 2016 A SURFACE FRONT WILL MOVE THROUGH THE AREA THIS MORNING FOLLOWED BY A STRONGER COLD FRONT LATE TONIGHT. HIGH PRESSURE THEN BUILDS INTO THE REGION THROUGH THE END OF THE WEEK. COOLER AIR IS FLOWING IN BEHIND THE FIRST COLD FRONT THAT CROSSED THE REGION EARLY THIS MORNING. SFC TROF AKA DWPT FRONT IS CURRENTLY BISECTING CWA AS OF 07Z. H5 TROF SCOOTING ACRS ONTARIO WL BRING INCREASING CLDS OVR NW ZONES TONIGHT AS WELL AS A CHC FOR SNOW SHOWERS IN UPSLOPE AREAS.
A DRY COLD FRONT IN FAR NORTH FLORIDA WILL MOVE SOUTH OF THE AREA THIS AFTERNOON WITH A LARGE AREA OF HIGH PRESSURE DOMINATING TROUGH THE WEEKEND. A DRY COLD FRONT WILL MOVE ACROSS THE TERMINALS THIS AFTERNOON AND WILL LIMIT FOG POTENTIAL TONIGHT TO 5SM BR 08-13Z.
750 AM EST WED FEB 17 2016 A COLD FRONT WILL PUSH SOUTHEAST ACROSS CENTRAL PA TODAY. HIGH PRESSURE WILL FOLLOW FOR THURSDAY WITH MORE IN THE WAY OF SUNSHINE.
HIGH PRESSURE RIDGING PREVAILS OVER THE ARKLAMISS THIS MORNING FROM A HIGH CENTERED OVER THE SOUTHERN PLAINS. WITH WARMER SOUTHEASTERLY FLOW ON THURSDAY. HIGH PRESSURE RIDGING WILL CONTINUE TO PREVAIL THURSDAY NIGHT. WITH WARMER OVERNIGHT LOWS RANGING FROM AROUND 40 DEGREES IN THE EAST TO LOW 50S IN THE WEST.
A weak cold front will move through during the morning hours. Highs will be in the lower 60s for north and west parts of the region.
352 AM MST WED FEB 17 2016 FAIR AND MILD WEATHER PREVAILS TODAY WITH A BROAD, LONGWAVE RIDGE OVER THE INTERIOR WEST. PACIFIC MOISTURE STREAMING THROUGH THE RIDGE WILL KEEP MID- AND HIGH-LEVEL CLOUDS OVER MUCH OF THE AREA TODAY.
while an upper level ridge moves into the Plains. This will allow for a return of southerly flow and warmer temperatures to Eastern Oklahoma and Northwest Arkansas today. These winds should keep low temps tonight warmer with lows in the upper 30s to upper 40s possible. the upper ridge shifts off to the east and an area of low pressure develops over the lee of the Rocky Mountains.
458 AM CST WED FEB 17 2016 HIGH PRESSURE IS MOVING EAST OVER THE STATE THIS MORNING. WITH ONLY THE HIGHER ELEVATIONS SEEING SOME PERSISTENT WINDS OVER 10 KTS.
DEEP 500 MB TROFFING OVER THE EASTERN HALF OF THE COUNTRY WILL SHIFT EAST WED AND THURS. THIS WILL ALLOW 500 MB RIDGING TO BUILD OVER SOUTHERN TX/NORTHERN MEX AND THE GULF OF MEXICO. A 500 MB TROUGH AXIS WILL DIG ACROSS THE WEST COAST OF THE U. VERY LIMITED DEEP LAYER MOISTURE VALUES DUE TO THE 500 MB RIDGING WILL ALSO ALLOW FOR PLENTY OF SUNSHINE WHICH WILL KEEP THE TEMPS GRADUALLY WARMING THROUGHOUT TODAY AND TOMORROW. WILL GO AT OR ABOVE THE WARMER MAV AND ECMWF NUMBERS AS THESE APPEAR TOO CONSERVATIVE CONSIDERING THE STRENGTH OF THE 500 MB RIDGING MOVING IN PLACE OVER THE AREA.
A WEAK FRONTAL TROUGH WILL PUSH SOUTHWARD OVER CENTRAL FLORIDA THROUGH LATE DAY WITH WINDS OUT OF THE N/NW. TEMPERATURES WILL WARM INTO THE LOW TO MID 70S THIS AFTERNOON.
708 AM EST WED FEB 17 2016 A TROF OF LOW PRESSURE WILL MOVE THROUGH THE AREA THIS MORNING. HIGH PRESSURE WILL BUILD ACROSS EASTERN NC FROM THE NORTH TONIGHT THROUGH THURSDAY NIGHT.
THE LOW LEVEL JET IS PROGD TO STRENGTHEN OVERNIGHT WHICH MAY LEAD TO A MIX OF STRATUS AND FOG WITH VSBYS REMAINING GENERALLY ABV 1SM. ONSHORE SFC WINDS ARE PROGD TO STRENGTHEN ON THU IN RESPONSE TO DEEPENING LOW PRESSURE ALONG THE ROCKIES.