Aikyam-Lab/Synoptic-Bench huggingface dataset:
1027 AM EDT SUN MAY 10 2015 A SLOW MOVING COLD FRONT WILL DROP NORTH TO SOUTH ACROSS OUR AREA TODAY BRING SHOWERS AND A FEW THUNDERSTORMS TO MUCH OF NORTHERN NEW YORK AND VERMONT.
649 AM CDT SUN MAY 10 2015 UPDATED AVIATION PORTION FOR 12Z TAF ISSUANCE AND NEW INFORMATION ADDED TO UPDATE SECTION A S/W TROF WAS PRODUCING SOME LIGHT SHOWERS/VIRGA OVER THE SE THIRD OF THE STATE. AS WEAK UPPER RIDGING ALOFT OCCURS AND DRY EAST FLOW FEEDS INTO THE REGION. PCPN CHANCES WILL RAMP UP TONIGHT AS A S/W TROF MOVES THROUGH THE REGION. AND A H8 WARM FRONT AND SFC OCCLUDED FRONT IMPACT THE REGION.
BUT COVERAGE WILL BE MORE ISOLATED AND WARMER CONDITIONS WILL LIMIT ANY SNOWFALL TO THE HIGHEST MOUNTAIN TOPS. DRY AND WARMER CONDITIONS ARE FORECAST FOR THE EARLY PART OF THE COMING WEEK. WITH A RETURN OF COOLER AND UNSETTLED WEATHER LATE IN THE WEEK. /339 AM MST/ A BROAD LOW PRESSURE TROUGH WILL REMAIN OVER ARIZONA TODAY. FAVORING THE HIGH TERRAIN ALONG THE RIM NORTHEAST TO THE FOUR CORNERS. TEMPERATURES WILL BE MUCH WARMER THAN YESTERDAY. HIGH PRESSURE BUILDS OVER THE SOUTHWEST ON MONDAY BRINGING DRY WEATHER AND A CONTINUED WARMING TREND.
AIDED BY WEAK ENERGY FROM THE UPPER LOW OVER THE CENTRAL PLAINS. CHATTANOOGA AIRPORT, TN 88 65 89 65 / 30 20 30 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 86 64 86 65 / 30 20 40 40 OAK RIDGE, TN 86 64 87 64 / 30 20 40 40 TRI CITIES AIRPORT, TN 86 59 86 61 / 20 20 40 40.
738 AM EDT SUN MAY 10 2015 AN ANOMALOUS UPPER LEVEL RIDGE WILL REMAIN OVER THE NORTHEAST CONUS THROUGH MONDAY.
703 AM CDT SUN MAY 10 2015 FOR 12Z TAFS /ISSUED 334 AM CDT SUN MAY 10 2015/ THE FORECAST AREA REMAINS SITUATED UNDER AN UPPER LEVEL RIDGE. IN BETWEEN TWO UPPER LEVEL LOWS. AN UPPER LOW OVER THE CENTRAL PLAINS. AS THE UPPER LEVEL RIDGE BEGINS TO WEAKEN AND MOVE EAST. HIGH PRESSURE WILL BUILD SOUTHWESTWARD ACROSS THE APPALACHIANS. HOWEVER GIVEN THE SUBSIDENCE UNDER THE UPPER RIDGE. THE UPPER LOW OVER THE PLAINS WILL BEGIN TO PUSH EASTWARD OVERNIGHT. AND OPEN INTO A LONGWAVE TROUGH. THE AXIS OF THE UPPER RIDGE WILL FINALLY MOVE EAST BY MONDAY MORNING. AS A COLD FRONT AND THE DEEP TROUGH CONTINUE THEIR EASTWARD PROGRESSION.
/ISSUED 352 AM EDT SUN MAY 10 2015/ * PULSE STRONG-SEVERE TSTORMS POSSIBLE THIS AFTERNOON WESTERN INTERIOR * MODERATE RISK OF RIP CURRENTS ATLANTIC BEACHES TODAY TRANQUIL WEATHER PREVAILS ACROSS SOUTH FL THIS MORNING WITH RIDGE AXIS STRETCHED ACROSS THE LAKE OKEECHOBEE REGION. THE RIDGE WILL LIFT NORTH INTO CENTRAL FL THIS AFTERNOON. HOWEVER, GIVEN THE HIGH INSTABILITY, BELIEVE THAT ONE OR TWO PULSE SEVERE TSTORMS ARE POSSIBLE ACROSS THE AFOREMENTIONED LOCALES SO WILL HIGHLIGHT THIS IN OUR PRODUCTS. THE PATTERN THROUGHOUT THE WEEK WILL CONTINUE WITH A RIDGE TO OUR NORTH, SETTING UP AN EAST-SOUTHEAST WIND FLOW PATTERN.
A COLD FRONT WILL SWEEP ACROSS THE AREA THIS MORNING INTO TONIGHT. CENTRAL AND SOUTHWEST OKLAHOMA AS A COLD FRONT APPROACHES. A COLD FRONT WILL SWEEP ACROSS ALL OF OKLAHOMA AND WESTERN NORTH TEXAS BY EARLY MONDAY.
MID AND UPPER LEVEL RIDGE IS SLOWLY BUILDING INTO THE REGION FROM THE SW AS TROPICAL STORM ANA MOVES ASHORE OVER ERN SC AND SLOWLY LIFTS NWD. A FEW CLOUDS NOTED NEAR AND E OF THE TROUGH AXIS. NO SIGNIFICANT CHANGES TO THE FCST FOR TODAY WITH AIRMASS A BIT DRIER AND WARMER.
928 AM PDT SUN MAY 10 2015 WEAK HIGH PRESSURE ALOFT WILL CREATE A PATCH. COOLER WEATHER AND A DEEPER MARINE LAYER MID WEEK AS A WEAK TROUGH MOVES ACROSS THE AREA. MUCH COOLER WEATHER AND THE POSSIBILITY OF PRECIPITATION TO END THE WEEK AS A LOW DIGS ALONG THE COAST AND MOVES OVER SO CAL. WATER VAPOR SATELLITE IMAGERY DISPLAYED WEAK RIDGING BUILDING OVER CENTRAL CA. AND A TROUGH MOVING INTO THE PACIFIC NW. WEAK RIDGING WILL BUILD OVER THE REGION TODAY THROUGH MONDAY. SUBSIDENCE FROM THE HIGH AND WEAK ONSHORE FLOW WILL CREATE WARMER WEATHER AND MOSTLY CLEAR SKIES.
915 AM MDT SUN MAY 10 2015 CLOUDS AND PRECIPITATION CONTINUE ACROSS MUCH OF THE CWA AS LOW PRESSURE. AS UPPER LEVEL LOW PRESSURE OVER NE CO LIFTS INTO THE NRN PLAINS SUNDAY. SO ADDITIONAL ACCUMULATIONS OF SNOWFALL LIKELY FOR THE HIGHER ELEVATIONS. UPPER LEVEL RIDGE BUILDS ACROSS THE REGION MONDAY BRINGING A RESPITE FROM THE WET WEATHER.
633 AM CDT SUN MAY 10 2015 12Z TAF CYCLE A COLD FRONT WILL CONTINUE TO MOVE ACROSS THE SOUTHERN TEXAS PANHANDLE THIS MORNING AND SHOULD MOVE THROUGH THE AMARILLO TAF SITE BY 14Z TO 16Z TODAY. WEAK COLD FRONT WILL ADVANCE SOUTHWARD THOUGH FORECAST AREA TODAY.
827 AM EDT SUN MAY 10 2015 AN ANOMALOUS UPPER LEVEL RIDGE WILL REMAIN OVER THE NORTHEAST CONUS THROUGH MONDAY.
1049 AM CDT SUN MAY 10 2015 DYNAMIC LOW PRESSURE SYSTEM CENTERED OVER NEBRASKA CONTINUES TO MOVE NORTHWARD. AS WE ARE ON THE COOL SIDE OF THE WARM FRONT. WHILE THEY DO AGREE ON A S/W RIDGE AND DRY CONDITIONS EARLY IN THE PERIOD.
840 AM MST SUN MAY 24 2015 A SERIES OF LOW PRESSURE SYSTEMS MOVING THROUGH ARIZONA WILL KEEP TEMPERATURES BELOW NORMAL THROUGH THE REMAINDER OF THE MEMORIAL DAY WEEKEND. STILL BELOW NORMAL UL HEIGHTS AND COOLER AIRMASS TEMPS WILL SUPPORT ANOTHER BELOW NORMAL DAY IN TERMS OF DAYTIME HIGHS WITH LOW TO UPPER 80S FOR MANY OF THE LOWER DESERT ELEVATIONS. LATEST STREAMLINE ANALYSIS SHOWS A WEAKENING UPPER LOW ACROSS WESTERN CO WITH ANOTHER COMPACT VORT MAX DIVING SOUTHEASTWARD THROUGH SOUTHERN CA. MODELS CONTINUE TO INDICATE THAT VORTICITY AND JET-FORCED ASCENT WILL BE PREVALENT ACROSS SOUTHERN AZ TODAY AS THE LOW SLIDES EASTWARD. ACROSS THE LOWER ELEVATIONS.
920 AM PDT SUN MAY 24 2015 LOW PRESSURE ALOFT WILL CONTINUE MOVE QUICKLY THROUGH THE REGION THIS MORNING MAINTAINING A DEEP MARINE LAYER AND A FEW LIGHT SHOWERS AND PATCHY DRIZZLE WEST OF THE MOUNTAINS. LOW PRESSURE WILL WEAKEN AND HIGH PRESSURE WILL STRENGTHEN BRINGING A SLOW INLAND WARMING TREND WHICH WILL LOWER THE MARINE LAYER AND PUSH TEMPERATURES SLIGHTLY ABOVE AVERAGE BY THE LATTER HALF OF THE WEEK.
A SERIES OF LOW PRESSURE SYSTEMS MOVING THROUGH ARIZONA WILL KEEP TEMPERATURES BELOW NORMAL THROUGH THE REMAINDER OF THE MEMORIAL DAY WEEKEND. LATEST STREAMLINE ANALYSIS SHOWS A WEAKENING UPPER LOW ACROSS WESTERN CO WITH ANOTHER COMPACT VORT MAX DIVING SOUTHEASTWARD THROUGH SOUTHERN CA. MODELS CONTINUE TO INDICATE THAT VORTICITY AND JET-FORCED ASCENT WILL BE PREVALENT ACROSS SOUTHERN AZ TODAY AS THE LOW SLIDES EASTWARD. ACROSS THE LOWER ELEVATIONS.
AN UPPER LEVEL LOW WILL MOVE SLOWLY FROM SOUTHERN B.
TEMPERATURES WILL RANGE FROM THE LOW 80S BEACHES TO AROUND 90 DEGREES WELL INLAND.
634 AM CDT SUN MAY 24 2015 PLEASANT WEATHER LAST FEW DAYS WILL BE ENDING TODAY AS IMPACT FROM BROAD UPPER TROUGH OVER WESTERN U. UPPER LOW CONTINUES TO SLOWLY MOVE THROUGH CENTRAL ROCKIES WITH SEVERAL SHORT WAVE TROUGHS ROTATING AROUND BASE AND INTO THE CENTRAL PLAINS EARLY THIS MORNING. STILL LOOKING LIKE UPPER LOW WILL DEVELOP INTO OPEN WAVE AND MOVE NORTHEAST MORE RAPIDLY ON MEMORIAL DAY.
945 AM EDT SUN MAY 24 2015 HIGH PRESSURE WILL EXTEND OVER THE AREA FROM OFFSHORE THROUGH THE END OF THE WEEK. NO MAJOR CHANGES TO THE FORECAST AS HIGH TEMPERATURES SHOULD REACH THE LOWER 80S IN MOST AREAS WITH UPPER 70S OUTER BANKS. 00Z MODELS CONTINUE TO INDICATE RIDGING SFC AND ALOFT PRODUCING DRY CONDITIONS THROUGH MIDWEEK. BUT HAVE TRENDED TOWARD SHRT WV ENERGY FROM W-SW WEAKENING RIDGE LATE WEEK WHILE SLOWING WESTWARD MOVEMENT OF UPR LOW OVER ATLC. PRED VFR CONDITIONS EXPECTED THROUGH THE TAF PERIOD AS HIGH PRESSURE CONTINUES TO INFLUENCE THE WEATHER WITH DRY CONDITIONS.
952 AM EDT SUN MAY 24 2015 HIGH PRESSURE BOTH SURFACE AND ALOFT WILL REMAIN OVER THE EASTERN UNITED STATES THROUGH MONDAY. THIS WILL ENSURE DRY WEATHER FOR THE REMAINDER OF THE HOLIDAY WEEKEND WITH TEMPERATURE AND HUMIDITY TRENDING WARMER. PWAT VALUES RUNNING 60 TO 90 PERCENT OF NORMAL ALONG WITH HIGH PRESSURE AT THE SURFACE AND BUILDING ALOFT WILL BRING ANOTHER PRECIPITATION FREE DAY ACROSS OUR AREA. ADJUSTED HIGH TEMPS ONLY SLIGHTLY HIGHER TODAY AS MORNING VALUES WERE RUNNING A COUPLE OF DEGREES WARMER THAN GUIDANCE.
548 AM MDT SUN MAY 24 2015 SATELLITE IMAGERY AND RADAR MOSAIC CLEARLY SHOWS AREA OF LOW PRESSURE SPINNING OVER WESTERN COLORADO THIS MORNING AS IT LIFTS TO THE NORTHEAST. A STRONG VORT MAX IS ROTATING AROUND THE LOW PRESSURE AND WILL MOVE ACROSS SOUTHERN LOCALES THIS MORNING AFFECTING SOUTHERN VALLEYS AND ALSO THE SAN JUANS. COLD AIR IS ALSO MOVING OVER THE SAME AREA THANKS TO THE COLD CORE NATURE OF THIS LOW PRESSURE. THE LOW WILL HAVE DRIFTED TO THE NORTHEAST BUT WE'RE STILL NOT OUT OF THE WOODS YET. THE REST OF THE CWA WILL SEE SHOWERS AND STORMS FIRING FIRST OVER THE HIGHEST TERRAIN BEFORE DROPPING INTO THE VALLEYS.
848 AM EDT SUN MAY 24 2015 A LARGE AREA OF HIGH PRESSURE WILL SET UP OFF THE EAST COAST AND PROVIDE WARM AND MOIST SOUTHERLY FLOW ALL WEEK.
915 AM PDT SUN MAY 24 2015 A WEAK UPPER LOW WILL MOVE EAST OF THE REGION TODAY.
BUT EXPECT VFR CONDITIONS TO PREVAIL AFTER 16-17Z AS THE LOW CLOUDS LIFT. MID/UPPER LEVEL RIDGE OVER THE MS VALLEY WILL SHIFT EAST TODAY AS TROF OVER THE ROCKIES MOVES OUT IN THE WESTERN HIGH PLAINS.
455 AM PDT SUN MAY 24 2015 NEW AVIATION DISCUSSION A FAST MOVING LOW PRESSURE SYSTEM FROM THE NORTH WILL MOVE QUICKLY THROUGH SOUTHERN CALIFORNIA EARLY THIS MORNING MAINTAINING A DEEPER MARINE LAYER AND BRINGING A SLIGHT CHANCE OF SHOWERS. LOW PRESSURE WILL WEAKEN AND HIGH PRESSURE WILL STRENGTHEN BRINGING A SLOW INLAND WARMING TREND EARLY THIS WEEK AND WARMING TO SLIGHTLY ABOVE AVERAGE FOR THE LATTER HALF OF THE WEEK.
1048 AM EDT SUN MAY 24 2015 HIGH PRESSURE WITH A DRY AND WARM MEMORIAL DAY WEEKEND. UPPER LEVEL S/W TROUGHS COMING OUT OF A GENERAL AREA OF TROUGHINESS OVER THE WESTERN CONUS. ON ACCOUNT OF A VERY TENACIOUS ATLANTIC RIDGE. THE INITIAL S/W TROUGH MINORS OUT QUITE A BIT AS IT APPROACHES ON MEMORIAL DAY. AS THE RIDGE FLEXES ITS MUSCLE. THE NEXT S/W TROUGH IS PROGGED TO MAKE BETTER IN ROADS TUE NT AND WED ALTHOUGH IT TOO WILL MINOR OUT. DIRTY RIDGE BECOMES MORE OF A FACTOR IN DETERMINING OUR SENSIBLE WEATHER. HIGH PRESSURE CENTER SHIFTS EAST OF THE AREA.
/ISSUED 311 AM EDT SUN MAY 24 2015/ HIGH PRESSURE REMAINS OFFSHORE THE MID ATLANTIC COAST THIS MORNING. WHILE LOW PRESSURE CONTINUES ACROSS THE SOUTH CENTRAL PORTION OF THE COUNTRY.
DO THINK THERE WILL BE SOME MORE SCT DEVELOPMENT AS WE HEAT INTO THE LOWER 80S LATER THIS AFTN.
UPPER LEVEL RIDGING STILL REMAINS IN PLACE. MORE PREDOMINATE MOSTLY CLOUDY CONDITIONS AND SCATTERED SHOWER AND THUNDERSTORM ACTIVITY SHOULD KEEP TEMPERATURES COOLER JUST WEST OF I-65. 77 /ISSUED 204 AM CDT SUN MAY 24 2015/ WATER VAPOR IMAGERY AND STREAMFLOW INDICATE AN UPPER RIDGE POSITION SITUATED ACROSS THE SOUTHEASTERN U. , AN IMPRESSIVE UPPER LOW OVER THE ROCKY MTNS, AND SEVERAL CONVECTIVE COMPLEXES IN BETWEEN LOCATED WITHIN THE VAST DIVERGENT FLOW ALOFT. FOR OUR REGION, THE RIDGE WILL MAINTAIN DRY WEATHER FOR MOST IF NOT ALL OF TODAY. THIS WAVE APPEARS THAT IT WILL SLOW DOWN AND BECOME SHEARED OUT UPON REACHING THE RIDGE POSITION OVER THE OH/TN VALLEY REGION.
1022 AM EDT SUN MAY 24 2015 AN UPPER-LEVEL HIGH PRESSURE SYSTEM CONTINUES TO BUILD INTO THE PROMOTING A MOSTLY CLEAR SKY AND DRY CONDITIONS. AN EVEN WARMER DAY IS EXPECTED TODAY. CHATTANOOGA AIRPORT, TN 86 66 82 68 / 0 20 40 40 KNOXVILLE MCGHEE TYSON AIRPORT, TN 84 63 84 67 / 0 10 30 30 OAK RIDGE, TN 84 63 83 67 / 0 10 30 30 TRI CITIES AIRPORT, TN 83 55 82 64 / 0 0 20 20.
ADJUSTED TEMPS SLIGHTLY WARMER OUT WEST WHERE THERE WL BE MORE INSOLATION. WENT MORE OPTIMISTIC WITH CLOUD CVR FURTHER EAST AS THE HIGH CLOUD DECK WL CONTINUE TO PUSH EWD.
AN UPPER LEVEL LOW MOVING SE OVER B. THE APPROACH OF THE LOW WILL KEEP MID LEVEL STEERING WINDS WESTERLY WHICH WILL KEEP ANY THUNDERSTORMS THAT FORM OVER THE CASCADES THIS AFTERNOON E OF THE CREST. THE UPPER LEVEL LOW WILL MOVE OVER THE N CASCADES NEAR THE CANADIAN BORDER MONDAY MORNING THEN SHIFT SLIGHTLY OVER THE OKANOGAN MONDAY AFTERNOON. THE MARINE LAYER REMAINS INTACT AND WEAK LIFT FROM THE LOW MAY PRODUCE AREAS OF DRIZZLE OVER THE INTERIOR MONDAY MORNING. DRIER N-NW FLOW ON THE W SIDE OF THE LOW WILL WORK DOWN PAST 850 MB NEAR THE TOP OF THE MARINE LAYER. WITH THE LOW CENTER OVER OR NEAR THE N CASCADES THE AIR MASS WILL REMAIN UNSTABLE FOR AFTERNOON CONVECTION.
THERE COULD BE SOME ISOLATED WEST TO SCATTERED EAST REDEVELOPMENT MIDDAY INTO THIS AFTERNOON AS AN UPPER LEVEL TROUGH AXIS LINGERS. THE FOCUS NOW TURNS TO A POTENTIAL HEAVY RAIN AND STRONG TO SEVERE STORM EVENT ON MONDAY AS AN UPPER TROUGH CURRENTLY SEEN OVER SOUTHERN CALIFORNIA MOVES ACROSS TEXAS. AN UPPER LEVEL TROUGH OVER THE TRANS PECOS AND AN MCV BETWEEN VICTORIA AND SAN ANTONIO ARE DRIFTING TO THE NORTHEAST. THE UPPER LEVEL TROUGH AXIS LINGERS ALLOWING FOR SHOWERS AND THUNDERSTORMS TO POSSIBLY REDEVELOP THIS AFTERNOON INTO EVENING ACROSS MAINLY EASTERN AREAS WITH LOCALLY HEAVY RAINS AND ISOLATED STRONG STORMS POSSIBLE. IT MAY BE CANCELLED EARLY IF THE TROUGH AXIS MOVES FURTHER EAST. ANOTHER UPPER LEVEL TROUGH MOVES ACROSS TEXAS ON MONDAY.
THIS LOW WILL LIFT THROUGHOUT THE DAY AND ALLOW KGUY TO VEER TOWARDS THE SOUTHWEST BY THE END OF THIS TAF ISSUANCE. THE UPPER LOW RESPONSIBLE FOR THE LATEST STRETCH OF ACTIVE WEATHER WAS CENTERED OVER NORTHWEST CO EARLY THIS MORNING. A LITTLE STRONGER FORCING WILL EXIST ACROSS THE FAR NORTHWEST PANHANDLES CLOSER TO THE CORE OF THE UPPER LOW.
1249 PM EDT SUN MAY 24 2015 BERMUDA HIGH PRESSURE PERSISTS THROUGH MIDWEEK. THE HIGH THEN MOVES FARTHER OUT INTO THE ATLANTIC AND WEAKENS ACROSS THE LOCAL REGION WITH MULTIPLE LOWS PASSING FROM THE GREAT LAKES INTO SOUTHEAST CANADA FROM THE MIDDLE THROUGH LATE THIS WEEK. A MIX OF WARMER MET/EKD GUIDANCE. THE SUBSIDENCE FROM THE RIDGE WILL STILL BE PROMINENT WITH MOSTLY CLEAR SKIES WITH A STRONG BERMUDA HIGH IN PLACE. AGAIN SIDING WITH A RELATIVELY WARMER SOLUTION. EXPECTING HIGH TEMPS NEAR THE SURFACE TO BE A FEW DEGREES WARMER THAN THE PREVIOUS DAY. THE SOUTHWEST FLOW CONTINUES WITH STRONG HIGH PRESSURE OFFSHORE. MORE CLOUDS ARE EXPECTED BUT WEATHER IS EXPECTED TO REMAIN DRY WITH A WARM FRONT TO THE NORTH OF THE REGION.
WITH FAIRLY STOUT UPPER RIDGE OVERHEAD. FAIRLY STRONG HIGH PRESSURE REMAINS SITUATED OVER THE WESTERN ATLC OFF OF THE MID ATLC COAST LEADING TO MODERATE EASTERLY FLOW OVER LOCAL ATLANTIC.
1145 AM EDT SUN MAY 24 2015 A LARGE AREA OF HIGH PRESSURE WILL SET UP OFF THE EAST COAST AND PROVIDE WARM AND MOIST SOUTHERLY FLOW ALL WEEK.
OTHERWISE PRIMARY ISSUE REMAINS STRONG SRLY WINDS EXPECTED TO DEVELOP OVER THE NEXT HOUR OR SO AS A TIGHT GRADIENT REMAINS IN PLACE THANKS TO DEEPENING LOW PRESSURE OVER THE TX/OK PANHANDLE REGION.
1035 AM EDT SUN MAY 24 2015 HIGH PRESSURE WILL MOVE OFFSHORE TODAY AND IT WILL REMAIN OVER THE ATLANTIC OCEAN THROUGH THE END OF THE WEEK. A SOUTHWEST FLOW AROUND THE HIGH WILL BRING WARMER CONDITIONS TODAY AND MONDAY. WAA ON THE S-SW FLOW ON THE BACKSIDE OF THE HIGH WILL PUSH TEMPS WELL ABV NORMAL. ANOTHER MILD NIGHT IN STORE FOR THE AREA WITH THE RIDGE ALOFT REMAINING IN CONTROL. CLOUDS INCREASING IN COVERAGE OVERNIGHT WITH CLOUD DEBRIS FROM LOW PRESSURE MOVING THROUGH THE WESTERN GREAT LAKES REGION.
731 AM EDT SUN MAY 24 2015 EAST WIND PATTERN WELL-ESTABLISHED ACROSS SOUTH FLORIDA TODAY DUE TO STRONG HIGH PRESSURE OFF THE COAST OF THE CAROLINAS. OVER THE NEXT FEW DAYS, THE MID AND UPPER RIDGE WILL CLOSE OFF THROUGH H5 AND H3.
RAISED POPS FOR THIS AFTERNOON OVER NORTHEAST SAN BERNARDINO COUNTY AND THE HIGHER TERRAIN OF CENTRAL AND SOUTHERN MOHAVE COUNTY.
610 AM CDT SUN MAY 24 2015 FOR 12Z TAFS /ISSUED 204 AM CDT SUN MAY 24 2015/ WATER VAPOR IMAGERY AND STREAMFLOW INDICATE AN UPPER RIDGE POSITION SITUATED ACROSS THE SOUTHEASTERN U. , AN IMPRESSIVE UPPER LOW OVER THE ROCKY MTNS, AND SEVERAL CONVECTIVE COMPLEXES IN BETWEEN LOCATED WITHIN THE VAST DIVERGENT FLOW ALOFT. FOR OUR REGION, THE RIDGE WILL MAINTAIN DRY WEATHER FOR MOST IF NOT ALL OF TODAY. THIS WAVE APPEARS THAT IT WILL SLOW DOWN AND BECOME SHEARED OUT UPON REACHING THE RIDGE POSITION OVER THE OH/TN VALLEY REGION.
717 AM EDT SUN MAY 24 2015 A LARGE AREA OF HIGH PRESSURE WILL SET UP OFF THE EAST COAST AND PROVIDE WARM AND MOIST SOUTHERLY FLOW ALL WEEK.
927 AM EDT SUN MAY 24 2015 ONCE AGAIN THIS MORNING WE FIND CLOUD STREETS TO THE WEST OF THE LOWER KEYS WITH SHOWERS AND A FEW THUNDERSTORMS MOVING TO THE WEST NEAR 25 KNOTS. IS THE RIDGE PARKED OFF THE MID ATLANTIC COAST. THIS RIDGE IS THE CULPRIT FOR THE FRESH EASTERLY WINDS ACROSS THE KEYS AREA.
WESTERN OKLAHOMA AND WESTERN NORTH TEXAS APPEARS TO HAVE THE HIGHEST CHANCES FOR MVFR OR LOWER CONDITIONS.
745 AM EDT SUN MAY 24 2015 HIGH PRESSURE BOTH SURFACE AND ALOFT WILL REMAIN OVER THE EASTERN UNITED STATES THROUGH MONDAY. THIS WILL ENSURE DRY WEATHER FOR THE REMAINDER OF THE HOLIDAY WEEKEND WITH TEMPERATURE AND HUMIDITY TRENDING WARMER. TEMPERATURES WILL TREND WARMER.
STRONG SUBSIDENCE AND DRYING OCCURRING AHEAD OF DAKOTAS HIGH PRESSURE RIDGE. THE RIDGE WILL MOVE OVER THE NORTHLAND OVERNIGHT.
NAM SHOWS A 500 MB TROUGH OFF NEW ENGLAND 12Z SAT. A TROUGH MOVES ONTO THE WEST COAST 12Z SUN WHICH MOVES INTO THE ROCKIES BY 12Z MON. THE TROUGH OVER THE ROCKIES SPLITS INTO A CLOSED 500 MB LOW OVER THE TX/NM BORDER AND A TROUGH OVER THE NORTHERN PLAINS 12Z TUE. THE CLOSED 500 MB LOW HEADS NORTHEAST INTO THE CENTRAL PLAINS 12Z WED AND THIS PUSHES UP A RIDGE OVER THE EAST COAST. BUT WILL BEHIND TO QUICKLY IMPROVE THIS AFTERNOON INTO THIS EVENING AS A RIDGE MOVES INTO THE AREA. EXPECT GALES TODAY AS COLD AIR SURGES IN BETWEEN LOW PRESSURE WELL E AND A RIDGE W. THE RIDGE MOVES IN TONIGHT WHICH WILL QUICKLY DIMINISH THE WINDS BELOW 25 KTS. ONCE THE RIDGE MOVES EAST AND A TROUGH FORMS OVER THE ROCKIES.
A MOSTLY SUNNY DAY ON TAP WITH PLEASANT TEMPERATURES IN THE WAKE OF COLD FRONT THAT PUSHED THROUGH EARLY THIS MORNING. HIGHS IN THE LOWER 70S N ZONES TO UPPER 70S TO NEAR 80 S ZONES.
522 AM CST FRI NOV 13 2015 HIGH PRESSURE WILL MOVE OVER THE STATE THIS AFTERNOON.
THE LOWER LEVELS ARE DRY AND THESE LIGHT SHOWERS WILL HAVE A DIFFICULT TIME REACHING THE GROUND. TODAYS HIGH TEMPERATURES WILL GENERALLY RANGE FROM THE LOWER 60S ACROSS THE HILL COUNTRY TO MID 60S ACROSS THE RIO GRANDE AND COASTAL PLAINS.
704 AM EST FRI NOV 13 2015 STRONG HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY AND REMAIN IN PLACE THROUGH THE WEEKEND.
1014 AM EST FRI NOV 13 2015 STRONG HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY AND REMAIN IN PLACE THROUGH THE WEEKEND.
HIGH PRESSURE WILL BUILD TOWARD THE AREA OVER THE WEEKEND BRINGING COOL AND MOSTLY DRY WEATHER. ESP WHEN THE BIG PUSH FROM THE UPPER TROUGH SWINGS DOWN LATER THIS AFTN. BUT HEIGHTS RISE QUICKLY AFTER THE TROUGH PASSES THIS EVENING. THE THERMAL TROUGH WILL BE SLIDING THROUGH LATER TONIGHT AND THE SUBSIDENCE FROM THE ADVANCING HIGH SHOULD KILL THINGS OFF AROUND SUNRISE OR SHORTLY AFTERWARD ON SATURDAY. THE 1030MB HIGH IS ONCE AGAIN OF PACIFIC ORIGIN AND NOT OUT OF CANADA BUT IT WILL RUN ABOUT 3-8F COOLER THAN NORMAL FOR MAXES ON SAT. THE HIGH PRESSURE AREA EXPANDS TO COVER ABOUT 3/4S OF THE CONUS.
523 AM CST FRI NOV 13 2015 QUIET AND MILD WEATHER PREVAILS IN THE SHORT TERM AS NORTHWEST FLOW ALOFT TRANSITIONS TO ZONAL AND THEN SOUTHWESTERLY AS THE NEXT TROUGH ENTERS THE WEST COAST THROUGH THE WEEKEND. HIGHS TODAY SHOULD BE NORMAL WITH READINGS IN THE LOWER TO MID 50S. SOUTHERLY WINDS DEVELOP ON SATURDAY WHICH SHOULD HELP BOOST TEMPS ABOVE NORMAL INTO THE LOWER TO MID 60S.
416 AM CST FRI NOV 13 2015 Another tranquil fall day on tap across southeast New Mexico and west Texas today as quasizonal flow aloft remains over the region and surface ridging results in light southeasterly flow at the surface.
1000 AM EST FRI NOV 13 2015 EARLY VISIBLE SATELLITE PHOTOGRAPHS SHOW SKIES ARE PARTLY CLOUDY WITH TEMPERATURES IN THE LOWER TO MID 80S EXCEPT 87 DEGREES AT MARATHON. A CONTINENTAL REGION OF HIGH PRESSURE (1028 MB) IS CENTERED OVER THE LOWER GREAT PLAINS. WITH AN EXTENSIVE RIDGE REACHING INTO THE EXTREME SOUTHEAST UNITED STATES AND INTO THE SUNSHINE STATE. A DECAYING COLD FRONT IS DRAPED ACROSS NORTH CENTRAL FLORIDA AND THE ADJACENT ATLANTIC AND GULF WATERS.
624 AM EST FRI NOV 13 2015 ANOTHER COLD FRONT WILL SWEEP THROUGH THE AREA LATE THIS AFTERNOON AND EVENING AND BRING EVEN COLDER AIR TO THE REGION THIS WEEKEND.
1016 AM EST FRI NOV 13 2015 AN UPPER LEVEL TROUGH WILL PUSH SOUTHEAST ACROSS THE GREAT LAKES TODAY AND TONIGHT. HIGH PRESSURE WILL BUILD INTO THE OHIO AND TENNESSEE VALLEYS ON SATURDAY.
Temperatures are likely to warm above freezing rapidly after sunrise.
952 AM EST FRI NOV 13 2015 A COLD FRONT WILL APPROACH FROM THE NORTHWEST TODAY AND WILL CROSS THE REGION TONIGHT.
THE FRONTAL BOUNDARY IS PUSHING THROUGH NORTH CENTRAL FLORIDA THIS MORNING UNDER A BROAD EAST COAST UPPER TROUGH. A WEAK COLD FRONT IS MOVING ACROSS THE CENTRAL FLORIDA WATERS. A WEAK COLD FRONT WILL SINK THROUGH ACROSS THE FLORIDA PENINSULA TODAY. A SOMEWHAT COOLER AND DRIER AIRMASS WILL MAKE A BRIEF VISIT TO THE REGION FOR THE FIRST PART OF THE WEEKEND.
603 AM CST FRI NOV 13 2015 FOR 12Z TAFS /ISSUED 357 AM CST FRI NOV 13 2015/ HIGH PRESSURE CONTINUES TO BUILD ACROSS THE TN VALLEY. AS UPPER LEVEL RIDGING BEGINS TO AMPLIFY JUST TO OUR WEST. THE EXCEPTION TO THE FREEZING TEMPS MAY BE IN THE HIGH ELEVATIONS OR NEAR LARGE BODIES OF WATER. WITH TEMPS RISING ABOVE FREEZING BY 14Z. WITH HIGH PRESSURE AND THE UPPER LEVEL RIDGE CONTINUING THEIR EASTWARD PROGRESSION.
BY SATURDAY NIGHT A STRONGER SYSTEM AND ITS COLD FRONT WILL APPROACH THE TWO STATE AREA AND INCREASE THE CHANCES OF PCPN FOR THE ENTIRE AREA.
410 AM CST FRI NOV 13 2015 LARGE 1026MB HIGH PRESSURE RIDGE CONTINUES TO SPREAD OVER THE NATION'S MID-SECTION AND GULF COAST STATES TODAY. BECOMING CENTERED OVER THE LOWER MISSISSIPPI VALLEY TONIGHT. COLDEST TEMPERATURES SINCE OCT 19TH /24 DAYS AGO/ EXPECTED TONIGHT WITH MOST INLAND AREAS REACHING THE LOWER 40S OR POSSIBLY A FEW LOCATIONS IN THE UPPER 30S TONIGHT AFTER WINDS DECOUPLE AND DRAINAGE TAKES PLACE BEFORE DAYBREAK SATURDAY.
542 AM CST FRI NOV 13 2015 THE POWERFUL LOW PRESSURE SYSTEM THAT MOVED THROUGH OUR REGION OVER THE LAST TWO DAYS HAS MOVED OVER THE EASTERN GREAT LAKES. AS WE WORK THE EFFECTS OF THIS SYSTEM OUT AND BRING IN A HIGH PRESSURE RIDGE. THE CENTER OF AN AREA OF HIGH PRESSURE WILL MOVE FROM KANSAS THROUGH SOUTHERN MO WITH A RIDGE AXIS EXTENDING NORTH THROUGH THE UPPER MIDWEST. THE RIDGE AXIS IS IN THE CENTRAL DAKOTAS. SO WE WILL SEE NORTHWEST WINDS 0F 10-15 MPH UNTIL THAT RIDGE AXIS ARRIVES. WINDS WILL TURN SOUTHWESTERLY TONIGHT AS THE RIDGE AXIS MOVES TO OUR EAST. LOW TEMPERATURES TONIGHT WILL STILL FALL INTO THE LOW 30S AND UPPER 20S THOUGH BECAUSE THE CLEARING SKIES PAIRED WITH LOW DEW POINTS AND THE LENGTH OF DARKNESS WILL ALLOW RADIATIONAL COOLING TO DROP TEMPERATURES SOMEWHAT EFFICIENTLY.
304 AM MST FRI NOV 13 2015 DRY AND WARMER WEATHER IS EXPECTED THROUGH SATURDAY.
947 AM EST FRI NOV 13 2015 HIGH PRESSURE AT THE SURFACE PROMOTING CLEAR AND SUNNY CONDITIONS TODAY. IN WAKE OF THE COLD FRONT THAT PASSED THROUGH THE REGION COOL AND DRY AIR HAS FILTERED INTO THE REGION. TEMPERATURES WILL BE COOLER THAN THE PAST SEVERAL DAYS. CHATTANOOGA AIRPORT, TN 62 33 58 33 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 59 30 53 29 / 0 0 0 0 OAK RIDGE, TN 59 31 54 30 / 0 0 0 0 TRI CITIES AIRPORT, TN 56 28 50 25 / 0 0 0 0 TN.
520 AM CST FRI NOV 13 2015 LARGE AREA OF HIGH PRESSURE WILL PUSH EAST ACROSS THE SOUTHERN US TODAY. THOUGH AM STILL ON THE COOLER SIDE OF GUIDANCE AND IF MIXING IS STRONGER THAN EXPECTED. RIDGE OF HIGH PRESSURE WILL BE PASSING EAST OF THE FORECAST AREA THIS EVENING WITH WARM ADVECTION COMMENCING ALOFT.
THERE IS NOT MUCH COOL ADVECTION IMMEDIATELY BEHIND THIS FRONT SO MAX TEMPS WILL BE ABLE TO CLIMB ABOVE NORMAL ONCE AGAIN INTO THE LOW 80S NORTH AND MID 80S ELSEWHERE. N-NNE WIND SURGE THIS AFTERNOON WILL VEER TO NERLY TONIGHT AS HIGH PRES RIDGE NORTH OF FL QUICKLY BUILDS EWD.
522 AM CST FRI NOV 13 2015 High pressure will continue to slide toward the area today, but pressure gradient remains tight with deep low pressure area still in southeastern Canada this morning. High pressure and clear skies setting up for efficient cooling tonight and temps bottom out in the upper 20s/near 30.
634 AM EST FRI NOV 13 2015 AN UPPER LEVEL TROUGH WILL PUSH SOUTHEAST ACROSS THE GREAT LAKES TODAY AND TONIGHT. HIGH PRESSURE WILL BUILD INTO THE OHIO AND TENNESSEE VALLEYS ON SATURDAY.
THE ELY AREA WILL SEE SLIGHTLY COOLER TEMPERATURES DUE TO SNOW COVER FOR THE NEXT DAY OR TWO.