Aikyam-Lab/Synoptic-Bench huggingface dataset:
510 PM CST THU MAR 5 2015 RIDGE OF HIGH PRESSURE DEAD OVERHEAD THIS AFTERNOON WITH CLEAR SKIES AND VERY CHILLY TEMPERATURES IN THE UPPER SINGLE DIGITS AND LOWER TEENS ABOVE ZERO. THE RIDGE OF HIGH PRESSURE WILL SHIFT EAST OF THE AREA AS A WARM FRONT APPROACHES FROM THE NORTHERN PLAINS. WARM FRONT MAKES PASSAGE THROUGH THE AREA ON FRIDAY WITH 925MB TEMPERATURES INCREASING SOME 10C FROM THURSDAY INTO THE -8 TO -2C RANGE. NORTHWEST FLOW ALOFT BRINGS A WAVE OF LOW PRESSURE ACROSS SOUTHERN CANADA/LAKE SUPERIOR.
AN UPPER RIDGE AND HIGH PRESSURE WILL GIVE FAIR DRY WEATHER THROUGH THE WEEKEND.
THE LOW LEVEL CLOUD DECK ASSOCIATED WITH OUR WINTER SYSTEM HAVE CLEARED OUT OF THE AREA. COLD/DRY AIR ASSOCIATED WITH A HIGH PRESSURE SYSTEM BUILDING INTO THE AREA WILL START TO MOVE IN LATE TONIGHT. AS THE HIGH PRESSURE BUILDS INTO THE AREA AND WINDS BECOME ORIENTED MORE TO THE N/NE. IF CLOUDS DO BUILD BACK WESTWARD WE MAY NOT SEE TEMPERATURES DROP INTO THE LOW TO MID TEENS. COLD/DRY AIR TO OUR NORTH MAY WIN OUT TONIGHT AND THE LOW LEVEL CLOUDS WILL BE SCATTERED AND LIMITED. STUMPF /ISSUED 534 PM CST THU MAR 5 2015/ THE LOW CLOUDS HAS CLEARED THE MSL TERMINAL AND SHOULD CLEAR THE HSV TERMINAL BETWEEN 01-02Z.
WITH SEVERAL OBS ACROSS CENTRAL LOUISIANA ALREADY AT OR BELOW FREEZING. SW TO NE ORIENTED HIGH PRESSURE IS EXPECTED TO REMAIN CENTERED TO OUR NW. THOUGH THE END TIME WAS EXTENDED ANOTHER HOUR SIMPLY TO MATCH THE EXPECTED RISE ABOVE FREEZING TOMORROW. WINDS WILL REMAIN MODERATELY STRONG AND SOMEWHAT GUSTY WITH COLD AND DRY HIGH PRESSURE RIDGING FROM THE GREAT LAKES INTO THE SOUTH PLAINS. /ISSUED 246 PM CST THU MAR 5 2015/ COLD FRONT THIS MORNING BROUGHT REPORTS OF SNOW IN CENTRAL LOUISIANA AND SLEET AND FREEZING RAIN AS FAR SOUTH AS THE I-10 CORRIDOR. TEMPERATURES HAVE STRUGGLED TO CLIMB INTO THE UPPER 30S TO LOWER 40S THIS AFTERNOON WHILE LFT HAS CONTINUE TO FALL TO AROUND FREEZING AT THIS TIME. FREEZING TEMPS AS FAR SOUTH AS THE COAST.
WINDS WILL REMAIN MODERATELY STRONG AND SOMEWHAT GUSTY WITH COLD AND DRY HIGH PRESSURE RIDGING FROM THE GREAT LAKES INTO THE SOUTH PLAINS. /ISSUED 246 PM CST THU MAR 5 2015/ COLD FRONT THIS MORNING BROUGHT REPORTS OF SNOW IN CENTRAL LOUISIANA AND SLEET AND FREEZING RAIN AS FAR SOUTH AS THE I-10 CORRIDOR. TEMPERATURES HAVE STRUGGLED TO CLIMB INTO THE UPPER 30S TO LOWER 40S THIS AFTERNOON WHILE LFT HAS CONTINUE TO FALL TO AROUND FREEZING AT THIS TIME. FREEZING TEMPS AS FAR SOUTH AS THE COAST.
/ISSUED 231 PM CST THU MAR 5 2015/ MUCH WARMER AND QUIETER CONDITIONS PREVAILING ACROSS EASTERN OKLAHOMA AND WESTERN ARKANSAS TODAY IN THE WAKE OF YESTERDAYS WINTRY MESS. THE INTENSE MARCH SUN IN COMBINATION WITH TEMPERATURES ABOVE FREEZING MOST AREAS HAS LED TO A STEADY DECREASE IN THE SNOW COVER ACROSS THE REGION. THE VERY COLD TEMPERATURES IN THESE AREAS COULD LEAD TO REFREEZING OF ANY MELTED SLEET/SNOW ON ROADWAYS OVERNIGHT. BUT HIGHS IN THE LOW TO MID 40S SHOULD GO A LONG WAY TOWARD MELTING WHAT REMAINS ON THE GROUND.
A LONG WAVE RIDGE OVER THE WEST COAST ISN'T GOING TO GO ANYWHERE ANYTIME SOON.
840 PM EST THU MAR 5 2015 LIGHT RAIN SHOWERS ARE MOVING INTO THE NATURE COAST THIS EVENING AHEAD OF A COLD FRONT.
227 PM PST THU MAR 5 2015 Mild high pressure will build over the Inland Northwest the next few days bringing a prolonged period of dry and warmer weather.
621 PM EST THU MAR 5 2015 A STRONG RIDGE OF HIGH PRESSURE WILL MOVE ACROSS THE NORTH COUNTRY TONIGHT.
647 PM EST THU MAR 5 2015 A STRONG COLD FRONT WILL BE SOUTHEAST OF THE AREA TONIGHT.
949 PM EST THU MAR 5 2015 A WEAK LOW PRESSURE SYSTEM WILL TRACK ALONG AN ARCTIC COLD FRONT WELL SOUTH OF THE AREA THROUGH THIS EVENING. HIGH PRESSURE MOVES EAST THROUGH FRIDAY THEN PASSES SOUTH OF THE REGION THIS WEEKEND AS SEVERAL WEAK IMPULSES PASS TO THE NORTH.
The low ceilings near/over PEQ and FST are expected to clear up in the next hour or two. VFR conditions will prevail after the low ceilings clear out of the area. Upslope flow against the higher terrain continues to keep clouds in place along the eastern slopes. An upper level low that had previously broke away from the upper trough that affected the region yesterday will begin to drift east over northern Mexico today.
326 PM MST THU MAR 5 2015 THE NORTHWEST FLOW ALOFT WILL WEAKEN EARLY FRIDAY AS THE HIGH PRESSURE RIDGE CENTERED OVER THE WEST COAST EXPANDS EASTWARD ACROSS THE GREAT BASIN. A COUPLE OF WEAK DISTURBANCES WILL DROP INTO THE NORTHERN PLAINS AROUND A LOW PRESSURE TROUGH POSITIONED OVER THE EASTERN PORTION OF THE CONUS. OTHERWISE THE WARMING TREND WILL PICK UP STEAM ON FRIDAY UNDER MOSTLY SUNNY SKIES AND AS WARMER CONDITIONS SPREAD IN FROM THE WEST.
COLD FRONT AND LEADING LINE OF SHOWERS STEADILY PUSHING SOUTHEAST THROUGH NORTH FLORIDA THIS EVENING. THE LINE OF SHOWERS CONTINUES TO WEAKEN AND WILL WASH OUT BY LATE THIS EVENING WITH A LULL IN PCPN CHANCES UNTIL MORNING AS COLD/MOIST N/NE FLOW SETS UP ACROSS NE FL/SE GA AS STRONG HIGH PRESSURE BUILDS IN NORTH AND NORTHWEST OF THE REGION.
929 PM CST THU MAR 5 2015 A COLD NIGHT IS IN STORE ACROSS SOUTH CENTRAL TEXAS AS TEMPERATURES DROP TO THE LOWER AND MID 20S ACROSS THE HILL COUNTRY AND UPPER 30S ELSEWHERE. SKIES CONTINUE TO CLEAR ACROSS THE REGION AS DRY AIR IN THE LOW- LEVELS CONTINUES TO FILTER IN FROM THE NORTH.
CHATTANOOGA AIRPORT, TN 20 42 26 58 / 10 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 15 39 25 53 / 10 0 0 0 OAK RIDGE, TN 14 38 24 53 / 10 0 0 0 TRI CITIES AIRPORT, TN 11 36 21 53 / 10 0 0 0.
40 HIGH PRESSURE WILL BUILD INTO SE TX LATER TONIGHT AND FRIDAY. /ISSUED 344 PM CST THU MAR 5 2015/ SKIES ARE CLEARING RAPIDLY ACROSS SOUTHEAST TEXAS ALLOWING MOST SITES TO REACH INTO THE LOW 40S THIS AFTERNOON. WINDS WILL BEGIN TO EASE THIS EVENING AS HIGH PRESSURE SETTLES INTO THE STATE. NORTHERN LOCATIONS COULD SEE IN EXCESS OF 10 HOURS OF SUBFREEZING TEMPERATURES WITH HIGHS IN THE UPPER 20S.
THE PATTERN ALOFT FEATURED NORTHWEST FLOW ACROSS THE CENTRAL PLAINS AS AN UPPER RIDGE BUILDS OVER THE PACIFIC NORTHWEST. HEIGHTS ALOFT WILL CONTINUE TO RISE ACROSS OUR REGION DURING THE NEXT 24 HOURS AS THE EASTERN CONUS TROUGH LIFTS OUT. AND TOP OUT IN THE MID 50S TO THE LOWER 60S. HAVE WENT WITH THE WARMER SIDE OF GUIDANCE. MORE IN LINE WITH GFS/MAV THAN NAM/MET AS THE NAM INITIALIZED WITH TOO MUCH SNOW ON THE GROUND AND THIS IS REFLECTED IN THE COOLER GUIDANCE TEMPS. WITH THE WARMER TEMP FORECAST AND LOW DPS. CURRENTLY HAVE LOW RELATIVE HUMIDITY VALUES IN THE LOW 20TH PERCENTILE FOR LOCATIONS WEST OF A LINE FROM PHILLIPSBURG TO OSBORNE KANSAS. HIGH PRESSURE SHOULD KEEP CONDITIONS VFR.
The 01 UTC surface analysis shows a cold front across the eastern portion of the forecast area, from just west of Cross City extending up into the South Carolina low country. Much cooler and drier air was moving in behind this front with a temperature range in the upper 30s across our Southeast Alabama counties to the upper 60s in the Southeast Florida Big Bend. Expect this front to continue moving east with cooler air overspreading the area. The freezing line is still well to the north of the area, and it doesn't look like much if any of our SE Alabama counties would have a shot at reaching freezing before sunrise on Friday.
Increasing clouds from mid level warm advection will also help keep early morning temperatures a tad warmer as well.
655 PM EST THU MAR 5 2015 HIGH PRESSURE WILL BUIILD IN THROUGH FRIDAY.
554 PM EST THU MAR 5 2015 HIGH PRESSURE WILL BUILD SOUTH OF NEW ENGLAND TONIGHT THROUGH FRIDAY.
BUT FLURRIES WILL CONTINUE ACROSS THE HIGHER ELEVATIONS OF FAR EASTERN TENNESSEE MOUNTAINS AND SOUTHWEST VIRGINIA. CHATTANOOGA AIRPORT, TN 20 42 26 58 / 10 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 15 39 25 53 / 10 0 0 0 OAK RIDGE, TN 14 38 24 53 / 10 0 0 0 TRI CITIES AIRPORT, TN 11 36 21 53 / 10 0 0 0.
Upper ridge will build over NorCal through the rest of the week with dry conditions and warm temperatures. Fog will be possible mainly over the northern San Joaquin valley in the stagnate air-mass under the ridge during the morning hours for much of the week.
930 PM EST TUE MAR 3 2015 LOW PRESSURE CROSSING THE GREAT LAKES WILL CONTINUE TO SPREAD RAIN OVER THE UPPER OHIO VALLEY REGION TONIGHT. RAIN WILL TURN TO SNOW WITH A WEDNESDAY COLD FRONT. A TRANSITION TO SNOW WILL OCCUR WITH THE ENCROACHMENT OF THE COLD FRONT ON WEDNESDAY.
304 PM PST TUE MAR 3 2015 A RIDGE OF HIGH PRESSURE WILL DEVELOP ACROSS THE WEST COAST THIS WEEK WHICH WILL PROVIDE MUCH DRIER CONDITIONS ALONG WITH A WARMING TREND INTO THE WEEKEND. TROUGH OF LOW PRESSURE DEPARTS TODAY TO THE EAST BRINGING CLEAR SKIES, AS DRIER AIR MOVES IN UNDER NORTHEAST FLOW.
A BUILDING RIDGE OF HIGH PRESSURE ALONG THE WEST COAST WILL RESULT IN DRY WEATHER CONDITIONS AND A SLIGHT WARMING TREND THROUGH THE UPCOMING WEEKEND. A MID/UPPER LEVEL RIDGE OFF OF THE WEST COAST WILL SLOWLY STRENGTHEN AND BUILD INLAND THROUGH LATE WEEK AS THE LONG-WAVE TROUGH AXIS OVER SOUTHERN CALIFORNIA SHIFTS EASTWARD.
528 PM CST TUE MAR 3 2015 AT H5 CLOSED LOW OVER WINNIPEG WITH TROUGH EXTENDING SOUTHWEST INTO SOUTHERN CALIFORNIA. HIGH OVER THE GULF OF MEXICO AD RIDGE OVER THE EASTERN PACIFIC. INITIALLY CROSS SECTIONS INDICATE DRY AIR IN THE LOWER LEVELS OF THE ATMOSPHERE.
810 PM CST TUE MAR 3 2015 AT H5 CLOSED LOW OVER WINNIPEG WITH TROUGH EXTENDING SOUTHWEST INTO SOUTHERN CALIFORNIA. HIGH OVER THE GULF OF MEXICO AD RIDGE OVER THE EASTERN PACIFIC. INITIALLY CROSS SECTIONS INDICATE DRY AIR IN THE LOWER LEVELS OF THE ATMOSPHERE.
523 PM CST TUE MAR 3 2015 247 PM CST SOMEWHAT BAGGY COLD FRONT WILL MOVE ACROSS THE REGION THIS EVENING AND USHER IN PROGRESSIVELY COLDER AIR MASS THROUGH THE NIGHT.
The 21Z HRRR pegged the position and motion of the cold front at 23Z -- somewhere from just south of Dalhart to near Borger then from there to near I-40 at the OK/TX state line. /ISSUED 255 PM CST Tue Mar 3 2015/ A strong upper trough that extends from Montana southwestward back to the Pacific will move east and drag across Northern Mexico on the way to the region. The trough will pass into the area Wednesday.
CHATTANOOGA AIRPORT, TN 55 65 36 37 / 60 70 90 80 KNOXVILLE MCGHEE TYSON AIRPORT, TN 48 63 33 34 / 60 70 90 80 OAK RIDGE, TN 49 62 30 33 / 70 80 90 80 TRI CITIES AIRPORT, TN 46 63 32 34 / 70 80 90 80 TN.
754 PM EST TUE MAR 3 2015 LOW PRESSURE WILL MOVE ACROSS ONTARIO INTO QUEBEC TONIGHT DRAGGING A COLD FRONT ACROSS THE REGION. THE FRONT WILL THEN STALL SOUTH OF THE AREA AS ANOTHER LOW PRESSURE SYSTEM TRACKS ALONG IT FOR WEDNESDAY AFTERNOON AND NIGHT.
A WARM FRONT EXTENDED FROM ABOUT SHREVEPORT TO HALLETSVILLE TO LAREDO. CLOUD COVER AND SOME MIXING FROM MODEST SFC WINDS SHOULD YIELD SLIGHTLY WARMER TEMPERATURES OVERNIGHT SO BUMPED MINS A FEW DEGREES WARMER. POTENTIAL IS STILL THERE FOR POCKETS OF DENSE SEA FOG TO AFFECT KGLS AS DEW PTS NEAR 70 FLOW OVER SHELF WATERS IN THE LOWER 50S. RAIN CHANCES LOOK OVERDONE TONIGHT AS SE TX LIES A LITTLE TOO CLOSE TO A 300 MB RIDGE WITH THE BEST JET DYNAMICS TO THE NORTH AND NORTHWEST OF SE TX. A FAIRLY STRONG INVERSION WILL KEEP THE LOW CLOUDS IN PLACE THROUGH MOST OF WEDNESDAY. SHOWERS AHEAD OF A STRONG COLD FRONT WILL BECOME MORE WIDESPREAD WEDNESDAY EVENING.
IT WAS IN THE LOWER 80S ALONG THE EAST COAST. A WARM PATTERN WILL CONTINUE OVER THE NEXT FEW DAYS AS RIDGING DOMINATES OUR WEATHER. /ISSUED 729 PM EST TUE MAR 3 2015/ MID/UPPER LEVEL HIGH PRESSURE WILL DOMINATE THROUGH THE PERIOD. HIGH PRESSURE OVER THE WESTERN ATLANTIC WILL SHIFT SLIGHTLY EASTWARD THROUGH THE PERIOD. /ISSUED 256 PM EST TUE MAR 3 2015/ HIGH PRESSURE WILL REMAIN DOMINANT MUCH OF THE WEEK. A WEAK COLD FRONT WILL STALL OVER THE REGION THIS WEEKEND.
510 PM CST TUE MAR 3 2015 THE WINTRY MIX OF FREEZING DRIZZLE AND SNOW HAS MOVED OUT OF THE AREA.
456 PM CST TUE MAR 3 2015 THE WARM FRONT SURGED NORTH TODAY. THIS HAS BROUGHT MUCH WARMER TEMPS AND MORE HUMID CONDITIONS TO THE REGION. THE REGION REMAINS BETWEEN AN UPPER LOW SPINNING NR THE BAJA AND A RIDGE OVER THE GULF PER THE LATEST WV IMAGERY AND UA ANALYSIS. THE AREA CONTINUES TO FLIP-FLOP BETWEEN WINTER AND SPRING WITH WARM AND MUGGY CONDITIONS NOW BACK ACRS THE AREA AND EXPECTED TO BE HERE UNTIL PASSAGE OF A STRONG COLD FRONT WEDNESDAY NIGHT. WITH THE WARM MOIST AIR OVERRIDING THE COOLER NEARSHORE SHELF WATERS. WITH RAIN CHCS INCREASING WEDNESDAY AS THE COLD FRONT MOVES INTO THE REGION.
THE LOW-MID LEVEL RIDGE CENTER THAT IS PARKED OVERHEAD OF FLORIDA THIS EVENING WILL MOVE OFF TO THE SOUTHEAST. OVERNIGHT LOWS IN THE LOW-MID 60S. HIGH PRESSURE BUILDING OFFSHORE OF THE MID ATLANTIC COAST WILL VEER WINDS FROM THE E/SE TO S/SE INTO TOMORROW WITH A SMALL INCREASE IN THE LOCAL GRADIENT.
TONIGHT-WEDNESDAY: A DEEP ELONGATED UPPER TROUGH CURRENTLY APPROACHING FROM THE WESTERN CONUS WILL INDUCE A VERY STRONG UPPER JET FROM MID- AMERICA INTO THE NORTHEAST STATES OVERNIGHT. SLEET AND FREEZING RAIN IS POSSIBLE GENERALLY ALONG AND SOUTH OF HIGHWAY 54/400 AFTER MIDNIGHT INTO EARLY WEDNESDAY MORNING. AS DOWNSLOPE CONDITIONS DEVELOP ALONG THE HIGH PLAINS. KETCHAM MEDIUM RANGE MODELS KEEP THE RIDGING OVER THE ROCKIES INTO THE WEEKEND. KETCHAM AN APPROACHING UPPER TROF AND STRENGTHENING UPPER JET WILL RESULT IN DEVELOPMENT OF WINTRY PRECIP ACROSS THE AREA TONIGHT INTO MIDDAY ON WEDNESDAY. A TRANSITION FROM RAIN TO SLEET/FREEZING RAIN IS EXPECTED ACROSS SOUTHERN KANSAS IN THE PREDAWN HOURS OF WEDNESDAY MORNING. KED A STRONG COLD FRONT PUSHED MOST OF THE FORECAST AREA TODAY.
704 PM EST TUE MAR 3 2015 LOW PRESSURE WILL SWING THROUGH SOUTHERN CANADA TONIGHT TRYING TO PUSH A WARM FRONT NORTH ACROSS THE REGION. AS THE LOW SHIFTS TO OUR NORTH. IT WILL DRAG A COLD FRONT THROUGH THE REGION LATE WEDNESDAY.
304 PM PST TUE MAR 3 2015 A RIDGE OF HIGH PRESSURE WILL DEVELOP ACROSS THE WEST COAST THIS WEEK WHICH WILL PROVIDE MUCH DRIER CONDITIONS ALONG WITH A WARMING TREND INTO THE WEEKEND. THE TROUGH OF LOW PRESSURE DEPARTS TODAY TO THE EAST BRINGING CLEAR SKIES, AS DRIER AIR MOVES IN UNDER NORTHEAST FLOW.
A COLD UPPER TROUGH WILL CROSS THE REGION THROUGH THE EVENING HOURS. HIGH PRESSURE WILL BRING A DRYING AND WARMING TREND THROUGH THE REST OF THE WEEK.
A WEAK LOW PRESSURE SYSTEM WILL MOVE ACROSS ARIZONA OVERNIGHT.
729 PM EST TUE MAR 3 2015 MID/UPPER LEVEL HIGH PRESSURE WILL DOMINATE THROUGH THE PERIOD. HIGH PRESSURE OVER THE WESTERN ATLANTIC WILL SHIFT SLIGHTLY EASTWARD THROUGH THE PERIOD. /ISSUED 256 PM EST TUE MAR 3 2015/ HIGH PRESSURE WILL REMAIN DOMINANT MUCH OF THE WEEK. A WEAK COLD FRONT WILL STALL OVER THE REGION THIS WEEKEND.
UPPER LEVEL RIDGING WILL BE EXITING THE OHIO VALLEY REGION. AS WE FIND OURSELF ON THE LEE SIDE OF A TROUGHING PATTERN. EXPECT A COLD FRONT TO SWEEP ACROSS KY FROM NW TO SE THROUGH THE NIGHT. AFTER A WARM FRONT IMPACTED US TODAY. THE SW PORTION OF THE CWA MAY EVEN STILL STAY IN THE LOW 50S. ESPECIALLY IN THE HIGHER TERRAIN OF THE SE CWA.
EVEN WITH MOIST DEWPOINTS INTO THE LOWER 60S. THE MILD START ALONG WITH INCREASING S/SW FLOW TO 15G20-25 MPH WILL JUMP TEMPS INTO THE LOWER TO MIDDLE 80S FOR ALL INLAND LOCATIONS WITH MID/UPPER 70S AT THE COAST. MAIN CHALLENGE FOR TONIGHT IS POTENTIAL SEA FOG DEVELOPMENT ALONG THE COOLER NEARSHORE WATERS.
SEVERAL OF THE WARNINGS AND ADVISORIES WERE ENDED EARLY BUT THE HIGHLIGHTS ACROSS THE SOUTH WERE ALLOWED TO RIDE THROUGH THE END OF THE VALID PERIOD AS PORTIONS OF INTERSTATE 80 REMAINS CLOSED AND A POCKET OF INSTABILITY KEEPS SOME SHOWERS GOING INTO THE EVENING. TO ALLOW FOR RAPIDLY DROPPING TEMPERATURES THAT COULD BOTTOM OUT NEAR 20 BELOW IN SOME OF THE LOWER LYING AREAS.
THERE MAY BE SOME LIGHT FREEZING DRIZZLE AROUND SUNRISE. MIXING SHOULD ALLOW FOR GUSTY WINDS ACROSS NORTHERN NEW YORK AND DOWNSLOPING INTO THE CHAMPLAIN VALLEY WILL RESULT IN ABOVE NORMAL TEMPERATURES WITH HIGHS IN THE LOWER 40S.
600 PM CST TUE MAR 3 2015 ALOFT: A LONGWAVE TROF EXTENDED FROM THE NRN ROCKIES SSW TO A CLOSED LOW MOVING INTO BAJA CA. THIS TROF WILL GRADUALLY PROGRESS E AND WILL MOVE INTO THE FCST AREA BY SUNSET TOMORROW. THIS TROF WILL MOVE INTO THE FCST AREA TONIGHT AND WEAKEN IN THE CONFLUENT FLOW. SURFACE: AN ARCTIC COLD FRONT HAS SURGED ACROSS THE FCST AREA TODAY.
THIS WILL ALLOW FOR WARMER TEMPERATURES TONIGHT ACROSS THE REGION. WITH LOWS IN THE LOW TO MID 60S ACROSS ALL AREAS EXCEPT THE NORTHWEST COUNTIES (UPPER 50S THERE). DO EXPECT DENSE FOG TO LINGER OVER THE BAYS AND NEARSHORE WATERS TONIGHT AS WARMER. MOIST AIR PUSHES OVER THE COOLER WATERS.
950 PM EST TUE MAR 3 2015 LOW PRESSURE WILL MOVE ACROSS ONTARIO INTO QUEBEC TONIGHT DRAGGING A COLD FRONT ACROSS THE REGION. THE FRONT WILL THEN STALL SOUTH OF THE AREA AS ANOTHER LOW PRESSURE SYSTEM TRACKS ALONG IT FOR WEDNESDAY AFTERNOON AND NIGHT.
A ridge of high pressure will build over Northern California through the rest of the week with dry conditions and warming temperatures each day.
744 PM EST TUE MAR 3 2015 RAIN WILL CONTINUE MAINLY ACROSS SOUTHERN LOCATIONS TONIGHT AS A COLD FRONT BECOMES NEARLY STATIONARY ALONG THE OHIO RIVER.
1013 PM EST TUE MAR 3 2015 LOW PRESSURE WILL SWING THROUGH SOUTHERN CANADA TONIGHT TRYING TO PUSH A WARM FRONT NORTH ACROSS THE REGION. AS THE LOW SHIFTS TO OUR NORTH. IT WILL DRAG A COLD FRONT THROUGH THE REGION LATE WEDNESDAY.
453 PM MST TUE MAR 3 2015 00Z TAF CYCLE FAIRLY LOW IMPACT TAFS FOR CENTRAL AND WESTERN TERMINALS WITH POTENTIAL FOR MVFR CIGS IN SHOWERS AND WINDY/GUSTY CONDITIONS BEHIND A COLD FRONT WEDNESDAY AFTERNOON. KTCC AND KROW BEHIND THE COLD FRONT WEDNESDAY WITH THE POTENTIAL FOR IFR CONDITIONS IN SNOW.
645 PM EST TUE MAR 3 2015 LOW PRESSURE WILL MOVE ACROSS ONTARIO INTO QUEBEC TONIGHT DRAGGING A COLD FRONT ACROSS THE REGION. THE FRONT WILL THEN STALL SOUTH OF THE AREA AS ANOTHER LOW PRESSURE SYSTEM TRACKS ALONG IT FOR WEDNESDAY AFTERNOON AND NIGHT.
952 PM CST TUE MAR 3 2015 RIGHT REAR ENTRANCE UPPER LEVEL JET SUPPORT INCREASING LIFT AND OMEGA/FRONTOGENESIS INCREASING OVER SOUTHERN NEBRASKA AS THE LONG WAVE TROF MOVES FROM THE ROCKIES INTO THE CENTRAL PLAINS. ANOTHER AREA OF HEIGHT FALLS WAS NOTED AHEAD OF THE CLOSED LOW THAT WAS DROPPING SOUTHEAST TOWARD THE WEST COAST OF BAJA CALIFORNIA NORTE. COLD HIGH PRESSURE WILL START TO BUILD SOUTH ACROSS THE NORTHERN PLAINS TONIGHT BUT THE CENTER OF THE RIDGE AXIS WILL REMAIN TO OUR NORTHWEST OVER MONTANA AND WYOMING. HIGH PRESSURE AT THE SURFACE WILL CONTINUE TO BUILD EAST WEDNESDAY AND WEDNESDAY NIGHT INTO OUR AREA.
COLD FRONT CURRENTLY EXTENDING FROM SOUTHERN INDIANA DOWN THROUGH SOUTHERN ILLINOIS INTO A LOW IN EASTERN OKLAHOMA.
626 PM EST TUE MAR 3 2015 LOW PRESSURE WILL MOVE ACROSS ONTARIO INTO QUEBEC TONIGHT DRAGGING A COLD FRONT ACROSS THE REGION. THE FRONT WILL THEN STALL SOUTH OF THE AREA AS ANOTHER LOW PRESSURE SYSTEM TRACKS ALONG IT FOR WEDNESDAY AFTERNOON AND NIGHT.
HIGH PRESSURE WILL THEN BUILD ACROSS THE AREA OVER THE NEXT FEW DAYS RESULTING IN DRY WEATHER WITH WARMING TEMPERATURES.
605 PM CST TUE MAR 3 2015 A WARM FRONT HAS MOVED NORTH OF MOST OF THE REGION. WHERE CIGS JUST BEGINNING TO RISE TO MVFR IN RECENT WAKE OF WARM FRONTAL PASSAGE. RW/TRW LIKELY DEVELOP JUST AHEAD OF VERY STG COLD FRONT REACHING KTXK BY 04/18Z. JUST AHEAD OF COLD FRONT. A WARM FRONT. WILL MOVE NORTH TONIGHT BRINGING WARMER TEMPS FOR THE REMAINDER OF THE CWA. THIS WILL NOT LAST LONG AS A STRONG COLD FRONT WILL ENTER NORTHERN AREAS EARLY WEDNESDAY MORNING. FREEZING TEMPS WILL REACH THE AREA EARLY WEDNESDAY EVENING. BUT THE SHALLOW WEDGE OF COLD AIR WILL BE BLOCKED BY THE HIGHER ELEVATIONS TO THE NORTH OF THE CWA. AS THE FREEZING TEMPERATURES DO NOT REACH THIS AREA UNTIL THE PRECIPITATION ENDS. THE RAIN SHOULD END BEFORE THE FREEZING TEMPS ARRIVE.
A FAIRLY STRONG INVERSION WILL KEEP THE LOW CLOUDS IN PLACE THROUGH MOST OF WEDNESDAY. SHOWERS AHEAD OF A STRONG COLD FRONT WILL BECOME MORE WIDESPREAD WEDNESDAY EVENING. /ISSUED 335 PM CST TUE MAR 3 2015/ VISIBILITIES HAVE IMPROVED ACROSS SOUTHEAST TEXAS THIS AFTERNOON AS THE WARM FRONT HAS LIFTED NORTHWARD THROUGH THE REGION. EXPECT A WARM START TO THE DAY ON WEDNESDAY WITH OVERNIGHT LOWS ONLY IN THE LOWER 60S ACROSS THE REGION. A WARM AND WET DAY IS EXPECTED FOR MUCH OF WEDNESDAY WEDNESDAY WITH WIDESPREAD LIGHT SHOWERS EXPECTED AHEAD OF AN APPROACHING COLD FRONT. TEMPERATURES WILL REACH THE LOW TO MID 70S BEFORE THE FRONT ARRIVES IN SOUTHEAST TEXAS. THERE IS A CHANCE THAT TEMPERATURES WILL COOL ENOUGH TO SUPPORT A MIX OF RAIN AND FREEZING RAIN.
906 PM EST TUE MAR 3 2015 A SPACE BORN VIEW SHOW AN UPPER LOW OVER QUEBEC WITH A TROUGH EXTENDING SOUTHWEST FROM MAINE TO WEST TEXAS. THE CHANGE WILL COME AHEAD OF THE TROUGH MENTIONED ABOVE.
RIDGE OF HIGH PRESSURE CONTINUES OFF THE COAST PLACING FORECAST AREA UNDER A COOL DRY NORTH FLOW TONIGHT AND THEN THE RIDGE AXIS SHIFTS EASTWARD INTO THE PACIFIC NORTHWEST ON WEDNESDAY. THIS MEANS ANOTHER COLD NIGHT UNDER CLEAR SKIES FOLLOWED BY SUNNY SKIES AND WARMER TEMPERATURES ON WEDNESDAY. A RIDGE OF HIGH PRESSURE WILL DOMINATE THE AREAS WEATHER WITH DRY CONDITIONS FOR THE REMAINDER OF THE WEEK.
OR BECOMING ISOLATED FLURRY ACTIVITY THIS EVENING AS THE UPPER LEVEL TROUGH AXIS IS MOVING INTO THE AREA.
Wind chill temperatures will likely fall below -20 degrees F at times overnight, but this should be limited to isolated ridge top locations. However, higher mountain valley locations and ridge top areas will likely fall into the teens below zero.
HIGH PRESSURE WILL BUILD OVER NORTHWEST CALIFORNIA THIS WEEK BRINGING DRY CONDITIONS AND A GRADUAL WARMUP THROUGH THIS COMING WEEKEND. ALL MODEL GUIDANCE INDICATES THAT A RIDGE OF HIGH PRESSURE WILL CONTINUE TO BUILD OVER THE WEST COAST INTO THIS WEEKEND BRINGING WARMER TEMPERATURES AND DRY CONDITIONS.
725 PM EST TUE MAR 3 2015 LOW PRESSURE CROSSING THE GREAT LAKES WILL CONTINUE TO SPREAD RAIN OVER THE UPPER OHIO VALLEY REGION TONIGHT. RAIN WILL TURN TO SNOW WITH A WEDNESDAY COLD FRONT. A TRANSITION TO SNOW WILL OCCUR WITH THE ENCROACHMENT OF THE COLD FRONT ON WEDNESDAY.
939 PM CST TUE MAR 3 2015 A SHORT WAVE TROUGH DROPPING IN FROM THE NORTHWEST TONIGHT WILL SPREAD SOME CLOUDS AND POSSIBLY SOME LIGHT SNOW/FLURRIES INTO NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA LATER TONIGHT. HIGH PRESSURE APPROACHING FROM THE NORTHWEST WILL BEGIN TO BRING COLDER AIR INTO THE AREA TONIGHT. WITH THE HIGH SETTLING IN OVER THE NORTHERN PLAINS ON WEDNESDAY.
600 PM CST Tue Mar 3 2015 /18Z TAFS/ The low clouds have cleared out and VFR conditions have returned, but this will not last much longer. A strong cold front will push south across west central Texas on Wednesday. Rain will increase in coverage during the afternoon, becoming freezing rain across the Big Country. In addition, low clouds will return to much of West Central Texas overnight, as another cold front approaches from the north. Models continue to bring the cold front to our Interstate 20 corridor by 6 am CST tomorrow morning. Plus, we believe accumulation of sleet of ice will not begin until after 6 PM CST tomorrow evening, because surface cold air advection behind the front will not be strong enough to lower surface temperatures to or below the freezing mark.
WARM FRONT RESULTS IN SCATTERED SHOWERS ACROSS THE SOUTHERN APPALACHIANS TONIGHT. PLACED SOME SHOWERS BACK INTO THE TERMINAL FORECAST LATER WEDNESDAY AFTERNOON AS THE SLOW MOVING COLD FRONT PRESSES FARTHER SOUTHEAST TOWARD THE APPALACHIAN MOUNTAINS.
BUT THE ATMOSPHERE IS SOGGY AND MSAS ANALYSIS SUGGESTS THERE WAS A WARM FRONT ALONG THE COAST. WITH SOME SLIGHTLY COOLER VALUES NORTH AND WEST.
/ISSUED 932 AM EDT FRI MAR 20 2015/ THE RIDGE OF HIGH PRESSURE WILL OVER THE FLORIDA STRAITS WILL BUILD NORTH INTO SOUTH FLORIDA TODAY. AS LOW PRESSURE MOVES EAST NORTHEAST UP THE MID ATLANTIC STATES COASTLINE.
HIGH PRESSURE WORKS IN AND ACROSS THE TENNESSEE VALLEY AND OVERALL SUBSIDENCE/DRYING THROUGH THE COLUMN SHOULD WIN OUT.
327 PM MDT FRI MAR 20 2015 A WEAK WESTERLY FLOW ALOFT WILL BE OVER COLORADO AS A RIDGE OF HIGH PRESSURE MOVES OVER COLORADO. TEMPERATURES WILL CONTINUE TO MODIFY WELL ABOVE NORMAL WITH HIGHS IN THE LOWER TO MID 70S SATURDAY AFTN.
DEEP LAYERED RIDGING CENTERED OVER THE WESTERN CARIBBEAN IS KEEPING STABLE AND DRY ALOFT. TEMPERATURES HAVE BEEN ABLE TO NOSE INTO THE LOWER 80S DURING SUNNY SPELLS AND DEW POINTS HAVE MIXED DOWN INTO THE UPPER 60S. THIS WILL BE DUE TO DEEP LAYERED RIDGING SLOWLY SETTLING FURTHER SOUTH INTO THE CARIBBEAN. THE LOW TEMPERATURE AT KEY WEST INTERNATIONAL AIRPORT WAS 79 DEGREES.
ANY LINGERING -SN SHOULD BE EXITING THE FA TO THE EAST THIS EVENING AS HIGH PRESSURE BUILDS IN AND WAVE EXITS.