Aikyam-Lab/Synoptic-Bench huggingface dataset:
318 PM EDT SAT MAR 28 2015 THE CENTER OF HIGH PRESSURE. THE INFLUENCE OF THIS HIGH PRESSURE WILL BE IN PLACE TODAY THROUGH TOMORROW. WITH A HIGH PRESSURE SURFACE INVERSION DEVELOPING OVERNIGHT. LIGHT TO CALM WINDS AS THE HIGH PRESSURE PASSES NEARLY OVERNIGHT. TEMPERATURES WILL RECOVER INTO THE LOW AND MID 50S AS SKIES REMAIN SUNNY AND WINDS SHIFT TO THE SOUTH BEHIND THE EXITING HIGH PRESSURE. WE COULD BE EXPERIENCING SOME CRITICAL RH VALUES DOWN IN THE LOW TO MID TEENS ACROSS A GOOD PORTION OF THE CWA.
ANOTHER COLD FRONT WILL BRING LIGHT RAIN OR SNOW SUNDAY NIGHT. HIGH PRESSURE WILL BE FIRMLY PLANTED OVER THE AREA AND SURFACE FLOW DIMINISHES TO CALM. THERE SHOULD BE LITTLE TROUBLE DE-COUPLING THE LOWER LEVELS TONIGHT. SUNSHINE AND SOUTHWESTERLY FLOW WILL BRING WARMER AIR BACK TO THE AREA AS A SYSTEM APPROACHES FROM THE WEST. TAX ISENTROPIC ASCENT AHEAD OF AN INCOMING WARM FRONTAL BOUNDARY INCREASES RAPIDLY DURING THE EVENING HOURS ON SUNDAY.
AN ASSOCIATED COLD FRONT WILL DROP IN FROM NORTH THIS EVENING AND MAKE IT TO THE I-70 CORRIDOR BY AROUND MIDNIGHT. SUNDAY NIGHT LOWS WILL BE A TAD COOLER THAN TONIGHT'S. IT APPEARS THERE ARE TWO MAIN CIRCULATIONS ACROSS NOAM THAT WILL BE FEEDING ENERGY INTO THE LOWER LATITUDES. INITIALLY THROUGH MID WEEK WE WILL BE MAINLY INFLUENCED BY THE PACIFIC FEED OF MOISTURE AND ENERGY WHICH WILL LEAD TO A SLIGHT COOL DOWN AS THIS DOMINANT RIDGE IS FLATTENED.
241 PM EDT SAT MAR 28 2015 HIGH PRESSURE OVER THE GREAT LAKES WILL MOVE SOUTHEAST TONIGHT AND WILL CENTERED OVER THE MID ATLANTIC REGION SUNDAY.
SHOULD SEE MOSTLY CLEAR SKIES AND COOLER CONDITIONS EVERYWHERE. SUNDAY NIGHT THROUGH SATURDAY DRY HIGH PRESSURE IS EXPECTED OVER THE AREA SUNDAY NIGHT WITH SOME GENERAL WARMING.
COLD FRONT IS ON SCHEDULE TO PASS DURING THE DAYTIME HOURS TODAY. THE TROUGH AND FRONT SHOULD BE OUT OF IDAHO BY EARLY EVENING. WITH BREEZY CONDITIONS LEFT IN ITS WAKE AND TEMPERATURES COOLER.
136 PM MDT SAT MAR 28 2015 SHORT TERM FORECAST CONCERNS ARE THE TIMING OF THE COLD FRONT ACROSS THE FORECAST AREA TONIGHT AND THE WIND SPEEDS DURING THE DAY ON SUNDAY BEHIND THE FRONT. THIS IS IN ADVANCE OF THE COLD FRONT THAT MOVES ACROSS THE FORECAST AREA BETWEEN 06-12Z OVERNIGHT AND ACROSS THE PLAINS STATES THROUGH THE DAY ON SUNDAY AS THE UPPER SHORT WAVE MOVES THROUGH THE UPPER FLOW TOWARDS THE GREAT LAKES AND UPPER MISSISSIPPI VALLEY REGION.
659 PM EDT SAT MAR 28 2015 LOW PRESSURE WILL TRACK SOUTH OF THE GULF OF MAINE INTO THE OPEN ATLANTIC THIS EVENING. CANADIAN HIGH PRESSURE WILL APPROACH OVERNIGHT AND CROSS THE REGION SUNDAY.
Area of high pressure over Lake Michigan will keep winds generally 10 mph or less out of an easterly direction, with speeds diminishing through the afternoon. As it does so, light northeasterly winds that have been affecting central IL will veer toward southeasterly, but remain light due to the weak pressure gradients around the high center. Flow ushering in some warmer air for the end of the weekend, at least briefly.
SATELLITE LOOPS SHOW MAINLY CLEAR SKIES OVER THE WFO HANFORD WARNING/FORECAST AREA TODAY AS AN UPPER-LEVEL TROUGH BRINGS A COOLING TREND TO THE REGION.
256 PM EDT SAT MAR 28 2015 HIGH PRESSURE OVER THE WESTERN GREAT LAKES WILL MOVE TO THE SOUTHEASTERN STATES BY SUNDAY NIGHT.
WITH DEEP MIXING TO NEARLY 850MB AND TEMPERATURES IN THE LOW TO MID 40S FOR MUCH OF THE AREA. AND WITH SURFACE TEMPERATURES AROUND FREEZING AS THE PRECIPITATION MOVES IN. FREEZING RAIN AND RAIN DURING TONIGHT AND SUNDAY MORNING AND THE TOUNGE OF WARM AIR MOVES OVER THE AREA. BUT THE SURFACE TEMPERATURES GET BACK ABOVE FREEZING AND WE GO BACK TO ALL RAIN AS THE EVENT ENDS. UPPER TROF DEPARTS SUNDAY NIGHT WHILE SFC RIDGING BUILDS ACROSS THE AREA. SOME LIGHT RAIN MIXED WITH SNOW IS POSSIBLE OVER IRON COUNTY WI IN THE EVENING DUE TO ITS PROXIMITY TO THE DEPARTING TROF.
258 PM CDT SAT MAR 28 2015 HIGH PRESSURE TONIGHT WITH CLOUDS OVER SEMO CLEARING. LIGHT WINDS SHOULD YIELD LOWS AT OR JUST BELOW FREEZING.
549 PM EDT SAT MAR 28 2015 COLD HIGH PRESSURE BUILDS FROM THE WEST TONIGHT INTO SUNDAY. SEVERAL COLD FRONTS WILL MOVE THROUGH THE OHIO VALLEY FOR THE UP COMING WORK WEEK. WILL MOVE LOWS TOWARD THE LOWER END OF MOS GUIDANCE. WEAK ZONAL FLOW SUNDAY EVENING BEFORE THE FIRST COLD FRONT MOVES THROUGH SUNDAY NIGHT. MAINLY SOME SHOWERS WITH A RAIN SNOW MIX FOR THE HIGHEST ELEVATIONS.
221 PM EDT SAT MAR 28 2015 COLD HIGH PRESSURE BUILDS FROM THE WEST TONIGHT INTO SUNDAY. WITH FEW LOCATIONS IN THE SINGLE DIGITS OVER THE HIGHER ELEVATIONS NORTHEAST MOUNTAINS. UPPER TROUGH AND WESTERN UPPER RIDGE TO A MORE ZONAL FLOW ALOFT.
1108 AM MDT SAT MAR 28 2015 15Z SURFACE ANALYSIS HAD LOW PRESSURE OVER SOUTHERN SK WITH COLD FRONT INTO ID. P6SM SKC WITH UPPER/THERMAL RIDGE PEAKING OVER THE CWA TODAY. STRONG COLD FRONT WITH 8-11MB/3HR PRESSURE RISES PUSHES INTO THE CWA AROUND 23Z AND EXITS CWA AROUND 06Z. WITH WARM FRONT THROUGH NORTHEAST MONTANA INTO CENTRAL SOUTH DAKOTA. SHARP UPPER LEVEL RIDGE ACROSS THE ROCKIES. STRONG COLD FRONT WILL BLAST THROUGH THE FORECAST AREA LATE THIS AFTERNOON/EVENING WITH SIGNIFICANT PRESSURE FALL- RISE COUPLET. AND STEEP LOW LEVEL LAPSE RATES ALL POINT TO HIGH WINDS BEHIND THE COLD FRONT.
MOST OF THESE SAME MODELS SHOW A NARROW BAND OF LOW- LEVEL CONVERGENCE AND STEEP LAPSE RATES ACROSS THE NORTHEAST PLAINS LATE THIS EVENING AND HINTS OF A TRIPLE POINT JUST BEYOND THE NERN CORNER OF THE STATE JUST AHEAD OF THE COLD FRONT. LOOKS DRY AND COOLER WITHIN THE POST-FRONTAL ENVIRONMENT WITH GUSTY NLY WINDS ON THE PLAINS AND STG/GUSTY NWLY WINDS IN THE FRONT RANGE MTNS DURING THE MORNING HOURS. FLOW ALOFT WEAKENS DURING THE AFTERNOON AS THE UPPER RIDGE BUILDING OUT WEST MOVES CLOSER TO THE STATE. SHOULD THEN SEE WIND SPEEDS SUBSIDING EVEN IN THE HIGH COUNTRY WITH HARDLY A CLOUD IN THE SKY WITH STG MID- LEVEL SUBSIDENCE.
A BACKDOOR COLD FRONT WILL PUSH THROUGH KTCC SUNDAY MID MORNING.
OVERNIGHT LOWS WILL BE SLIGHTLY WARMER THAN LAST NIGHT WITH LOWS IN THE UPPER 50S INLAND. AND IN THE LOWER 60S ACROSS THE COAST COUNTIES AND ALONG THE RIO GRANDE. SUNDAY WILL BRING MUCH WARMER AND WINDIER CONDITIONS. AS A MOSTLY DRY ATMOSPHERE REMAINS OVERHEAD ALONG WITH WARMER H85 TEMPS. DRY AND WARMER CONDITIONS ARE EXPECTED. THINGS WILL CALM DOWN HEADING INTO THE EVENING WITH SUNDAY NIGHT LOWS RANGING IN THE LOW TO MID 60S AREA-WIDE.
EAST WINDS TODAY TO BECOME SOUTHEAST AS HIGH PRESSURE SHIFTS EAST.
CLOUDS EXITING THE REGION TO THE EAST ALLOWING FOR MOSTLY SUNNY SKIES AREAWIDE WITH TEMPERATURES CLIMBING INTO THE LOW TO MID 70S.
1220 PM CDT Sat Mar 28 2015 A well defined upper short wave trough diving south through the Midwest is bringing light mixed precipitation to mainly the eastern half of the forecast area.
COOL HIGH PRESSURE SYSTEM WILL LUMBER SOUTHEASTWARD FROM THE MID PART OF THE COUNTRY TO VICINITY OF GEORGIA/SOUTH CAROLINA SUN AFTERNOON. THIS WILL MAINTAIN A NORTHWEST/NORTH FLOW OF COOLER THAN NORMAL AIR. (FROM PREV DISC)THE HIGHLY AMPLIFIED UPPER PATTERN OF RIDGE IN THE WEST AND TROUGH IN THE EAST WILL BREAK DOWN EARLY IN THE WEEK RESULTING IN A MORE ZONAL FLOW. THEN THE ATLC SUBTROPICAL RIDGE AXIS WILL BUILD WEST OVER THE NORTH/CENTRAL FL PENINSULA MID TO LATE WEEK. A HIGH PRESSURE CENTER WILL SETTLE TO VICINITY GEORGIA/SOUTH CAROLINA ON SUNDAY WHILE STRENGTHENING A COUPLE MILLIBARS. BOATING CONDITIONS SHOULD IMPROVE AS HIGH PRESSURE RIDGE AXIS SETTLES OVER THE AREA AND PRES GRAD COLLAPSES MON.
DRY/VFR CONDITIONS TO CONTINUE THROUGH SUNDAY AS CONTINENTAL HIGH PRESSURE DOMINATES THE WEATHER PATTERN.
140 PM EDT SAT MAR 28 2015 AN UNSEASONABLY COLD HIGH PRESSURE SYSTEM WILL PUSH EAST ACROSS THE AREA TODAY INTO TONIGHT. INCREASING SOUTHERLY FLOW AHEAD OF AN APPROACHING COLD FRONT WILL ALLOW FOR MORE SEASONABLE TEMPERATURES ON SUNDAY. RAIN SHOWERS WILL DEVELOP SUNDAY AFTERNOON AND CONTINUE INTO SUNDAY NIGHT AS THE COLD FRONT MOVES THROUGH THE REGION. SOUTHERLY LOW LEVEL FLOW WILL BE ON THE INCREASE THROUGH THE DAY ON SUNDAY AS WE START TO GET INTO SOME RETURN FLOW AND A COLD FRONT APPROACHES FROM THE WEST LATE IN THE DAY. THE COLD FRONT IS ASSOCIATED WITH SHORT WAVE ENERGY MOVING THROUGH THE SOUTHERN GREAT LAKES WHICH WILL ALLOW FOR SHOWERS TO DEVELOP WEST TO EAST ACROSS OUR AREA LATER SUNDAY AFTERNOON AND CONTINUE INTO SUNDAY NIGHT.
THE COLD FRONT OVER NORTHERN UTAH LATE THIS AFTERNOON WILL SWEEP SOUTH INTO EXTREME SOUTHERN UTAH TONIGHT.
1109 AM MDT SAT MAR 28 2015 THE RIDGE WAS BREAKING DOWN AS IT MOVED OVERHEAD THIS EARLY MORNING UNDER PRESSURE FROM A TROUGH MOVING THROUGH WASHINGTON- OREGON. IN SPITE OF THE WEAKENING OF THE RIDGE. THE TAIL OF THE WEAK COLD FRONT DROPS SOUTH OF THE WYOMING BORDER LATE AFTERNOON AND THROUGH THE I-70 CORRIDOR IN THE LATE EVENING BEFORE STALLING IN THE ABAJO-NW SAN JUAN MTNS TOWARDS SUNDAY MORNING. THE NEW AIR MASS IS DRIER AND SLIGHTLY COOLER OVER THE NORTHERN AND CENTRAL ZONES. LOOK TO BE ABOVE THE HIGHEST MOUNTAIN TOPS AS 700MB TEMPS ARE 6 TO 8C.
TEMPERATURES SHOULD BE 5 TO 10 DEGREES WARMER. IT WILL BE ANOTHER WARM SPRING DAY SUNDAY WITH HIGHS IN THE UPPER 70S NORTHEAST TO NEAR 90 DEGREES ACROSS THE NORMALLY WARMER SPOTS ACROSS THE WEST.
LATEST IR IMAGERY AS OF 200 AM OVERLAID WITH MODEL STREAMLINE ANALYSIS DEPICTS THE CONTINUED PRESENCE OF A DEEP COLD CORE FULL LATITUDINAL TROUGH SITUATED ACROSS THE EASTERN CONUS. AT THE SURFACE AND IN THE LOWER TO MID LEVELS. A SHORT REPRIEVE A COOLER.
249 PM EDT SAT MAR 28 2015 COLD HIGH PRESSURE BUILDS FROM THE WEST TONIGHT INTO SUNDAY. SEVERAL COLD FRONTS WILL MOVE THROUGH THE OHIO VALLEY FOR THE UP COMING WORK WEEK. WITH FEW LOCATIONS IN THE SINGLE DIGITS OVER THE HIGHER ELEVATIONS NORTHEAST MOUNTAINS. WEAK ZONAL FLOW SUNDAY EVENING BEFORE THE FIRST COLD FRONT MOVES THROUGH SUNDAY NIGHT. MAINLY SOME SHOWERS WITH A RAIN SNOW MIX FOR THE HIGHEST ELEVATIONS.
EARLY 12Z GUIDANCE IS TRENDING A BIT COOLER WITH LOW TEMPERATURES TONIGHT.
12Z SOUNDINGS SUPPORT TEMPS IN THE UPPER 70S OVER THE EAST TO THE LOWER 80S OUT WEST. RAP/HRRR GUIDANCE SUPPORTS TEMPS IN THE LOWER/MID 80S FOR THIS AFTN. BUT STILL VERY DRY IN THE LOWER LEVELS OF THE ATMOSPHERE. WE WILL HAVE A CHANCE OF SHWRS/TSTMS AS A MID/UPPER LEVEL TROF MOVES ACROSS. EXPECT A COLD FRONT TO MOVE THROUGH AND PRODUCE COOLER TEMPERATURES FOR THE WEEKEND. 33 LIGHT AND VARIABLE WINDS THIS MORNING WILL BECOME SOUTHWEST AND SOUTHERLY TODAY AND INCREASE ON SUNDAY AS THE PRESSURE GRADIENT TIGHTENS BETWEEN A TROUGH OF LOW PRESSURE OVER WEST TEXAS AND HIGH PRESSURE OVER THE SOUTHEAST STATES.
Otherwise slighty warmer temperatures are expected today compared to yesterday due to weak low level warm air advection across th area and plenty of solar insolation late this morning and afternoon.
633 AM EST THU JAN 15 2015 HIGH PRESSURE WILL REMAIN OVER THE AREA TODAY. LOW PRESSURE TRACKING NORTH OF THE REGION WILL PULL A WARM FRONT ACROSS THE STATE THIS EVENING FOLLOWED BY A COLD FRONT ON FRIDAY. CURRENTLY INVERTED TROUGH EXTENDS WESTWARD FROM OCEAN LOW INTO THE GULF OF MAINE. THIS EVENING THE TROUGH BECOMES MORE ACTIVE WITH SOME LIGHT SNOW POSSIBLE ACROSS THE SOUTHEASTERN PORTION OF THE FORECAST AREA AND ALONG COASTAL SECTIONS. LATE TONIGHT A STRONG COLD FRONT APPROACHES FROM THE NORTHWEST. LOW PRESSURE TRACKING THROUGH CENTRAL QUEBEC WILL PULL A COLD FRONT ACROSS THE AREA ON FRIDAY.
952 AM EST THU JAN 15 2015 HIGH PRESSURE WILL BRIEFLY BUILD IN FOR TODAY. WEAK LOW PRESSURE WILL PASS SOUTH OF THE AREA AND OFF THE CAROLINA COAST TONIGHT. A COLD FRONT WILL THEN MOVE THROUGH THE MID-ATLANTIC FRIDAY.
HIGH PRESSURE WILL BUILD SOUTHWARD TODAY. WITH HIGHS CLIMBING INTO THE LOWER TO MIDDLE 50S. HIGH PRESSURE WILL THEN BEGIN TO SHIFT EAST OF THE AREA BY FRIDAY AFTERNOON. WITH TEMPS IN THE LOWER 60S.
427 AM MST THU JAN 15 2015 WARMER AND DRIER AIR OVER COLORADO TODAY. BUT WEST WINDS WILL BRING WARMER AIR OVER THE SNOWPACK AND WE SHOULD SEE A FAIR AMOUNT OF MELTING TODAY WITH HIGHS GETTING INTO THE 40S IN THE COLDER AREAS AND 50S IN THE AREAS WEST OF THE SNOWPACK.
1054 AM EST THU JAN 15 2015 A LARGE AREA OF HIGH PRESSURE STRETCHED FROM THE OHIO RIVER VALLEY TO NEW ENGLAND WILL DRIFT SLOWLY TO THE EAST TODAY. PUSHING A COLD FRONT ACROSS THE STATE.
944 AM EST THU JAN 15 2015 HIGH PRESSURE WILL CONTINUE OVER THE AREA TODAY.
THE UPPER RIDGE AXIS IS OVER THE REGION THIS MORNING AND HAS ALLOWED THE INVERSION CLOUDS TO REMAIN LOCKED IN NEARLY ALL SE OREGON/SW IDAHO VALLEYS. THE LOCATIONS THAT WILL SEE FOG THIS MORNING WILL BE IN THE HIGHER ELEVATION VALLEYS /LIKE THE LONG VALLEY/ WHERE THE TOP OF THE INVERSION IS SHALLOW. TOTAL AMOUNTS WILL GENERALLY RANGE FROM 1-2 INCHES IN THE LOWER VALLEYS AND 2-5 INCHES IN THE MOUNTAIN VALLEYS.
PASSAGE OF MID LEVEL TROUGH AXIS SHOULD PROMOTE DRIER AIR AND MIXING OUT OF CURRENT CLOUD DECK. HIGHS WILL BE IN THE LOWER 50S ACROSS THE HILL COUNTRY TO THE MID AND UPPER 50S ALONG THE I-35 CORRIDOR AND COASTAL PLAINS. THIS WILL ALLOW THE RETURN OF SOUTHERLY FLOW ACROSS THE AREA AND HIGH TEMPERATURES TO REACH THE LOWER 60S.
956 AM EST THU JAN 15 2015 HIGH PRESSURE WILL BRIEFLY BUILD IN FOR TODAY. WEAK LOW PRESSURE WILL PASS SOUTH OF THE AREA AND OFF THE CAROLINA COAST TONIGHT. A COLD FRONT WILL THEN MOVE THROUGH THE MID-ATLANTIC FRIDAY.
WARMING TREND WILL CONTINUE FOR FRI AS THE SURFACE FLOW SHIFTS MORE TO THE WEST AND EVENTUALLY TO THE SOUTHWEST AS LEE SIDE TROUGHING DEVELOPS OVER THE PLAINS. NORTHWEST MID/UPPER FLOW IS PROGGED TO CONTINUE WHICH WILL RESULT IN ANOTHER COLD FRONT MOVING ACROSS THE AREA ON TUE-WED WITH A RETURN TO MORE SEASONABLE TEMPERATURES BY THE END OF THE FORECAST PERIOD.
639 AM CST THU JAN 15 2015 AN UPPER LEVEL TROUGH OF LOW PRESSURE APPROACHING FROM THE NORTHWEST WILL PROVIDE AREAS OF LIGHT RAIN OR SPRINKLES EARLY THIS MORNING FOR PARTS OF THE FOUR STATE REGION. HIGH PRESSURE ON THE SURFACE AND ALOFT WILL MOVE OVER THE AREA PROVIDING NORTHWEST WINDS 7-10 KNOTS THROUGH 16/00Z THEN LIGHT AND VARIABLE TO NEAR CALM OVERNIGHT. A WEAK COLD FRONT ASSOCIATED WITH AN UPPER TROUGH MOVG ACROSS OHIO VALLEY WILL ONLY HAVE A VERY SLIGHT IMPACT ON THIS TREND. WITH MODELS INDICATED A VIGOROUS UPPER TROUGH POSSIBLE BY MIDWEEK.
638 AM EST THU JAN 15 2015 A COLD FRONT WILL BRING SNOW SHOWERS TONIGHT INTO FRIDAY. A COLD FRONT MOVING OUT OF THE GREAT LAKES WILL USHER IN ANOTHER ROUND OF SNOW SHOWERS TONIGHT INTO FRIDAY. HIGH PRESSURE RETURNS FRIDAY NIGHT WITH ANOTHER SHOT OF ARCTIC AIR.
CHATTANOOGA AIRPORT, TN 43 27 50 29 / 40 10 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 40 27 47 29 / 30 10 0 0 OAK RIDGE, TN 41 28 47 28 / 30 10 0 0 TRI CITIES AIRPORT, TN 42 26 45 24 / 40 20 0 0.
420 AM PST THU JAN 15 2015 A RIDGE OF HIGH PRESSURE WILL BRING DRY WEATHER. LITTLE CHANGE IN THE OVERALL WEATHER PATTERN IS FORESEEN DURING THE NEXT 72 HOURS WHILE CENTRAL CALIFORNIA SITS UNDERNEATH A FAIRLY STRONG RIDGE OF HIGH PRESSURE. AS LONG AS THE HIGH PRESSURE RIDGE REMAINS OVER CENTRAL CA. IT WILL TAKE A STORM SYSTEM WITH A SIGNIFICANT AMOUNT OF WIND TO FLUSH THE LOW LEVEL CRUD COMPLETELY OUT OF THE SJ VLY.
CLOUD CEILINGS WILL LOWER WITH TIME THIS MORNING AND AFTERNOON AS A TROUGH AXIS IS MOVING THROUGH THE SOUTHEAST THIS AFTERNOON. THE TROUGH WILL CREATE A FEW SCATTERED SHOWERS ACROSS THE AREA.
/ISSUED 311 AM CST THU JAN 15 2015/ IR SATELLITE LOOP SHOWS LOW STRATUS DEPARTING EARLY THIS MORNING BEHIND AN EASTWARD MOVING UPPER LEVEL TROUGH. UPPER LEVEL RIDGING WILL BUILD EASTWARD TODAY RESULTING IN SIGNIFICANT HEIGHT RISES AND ABOVE NORMAL TEMPERATURES IN THE MID 50S AREA WIDE. DOWNSLOPING AND MIXING INTO INCREASINGLY WARMER MID LEVELS WILL RESULT IN TEMPERATURES REACHING WELL ABOVE NORMAL BY FRIDAY AFTERNOON.
Forecast warming up through the week going into the weekend with some temps expected above freezing for some locations on Friday.
1000 AM EST THU JAN 15 2015 A COLD FRONT WILL BRING SNOW SHOWERS TONIGHT INTO FRIDAY. PATCHY DENSE FREEZING FOG HAS DISSIPATED. A COLD FRONT MOVING OUT OF THE GREAT LAKES WILL USHER IN ANOTHER ROUND OF SNOW SHOWERS TONIGHT INTO FRIDAY. HIGH PRESSURE RETURNS FRIDAY NIGHT WITH ANOTHER SHOT OF ARCTIC AIR.
501 AM MST THU JAN 15 2015 12Z TAF CYCLE THE MAIN FOCUS FOR EARLY TODAY WILL BE OVER WESTERN NM WHERE LOW CLOUDS AND PATCHY FREEZING FOG ARE HOLDING STRONG. HIGH PRESSURE BUILDING IN OVER WESTERN NM TODAY MAY FAVOR THE LOW CLOUDS TO HANG AROUND A BIT LONGER THAN EXPECTED. MUCH QUIETER PATTERN FOR THE NEXT 5 OR 6 DAYS ACROSS THE FORECAST AREA AS HIGH PRESSURE ALOFT BUILDS IN FOR AWHILE.
LOW CIGS ARE AGAIN A DISTINCT POSSIBILITY TONIGHT AHEAD OF THE NEXT COLD FRONT, BUT FOR NOW KEPT IFR OUT OF THE TAFS, BUT IF CONFIDENCE INCREASES COULD BE INCLUDED WITH THE NEXT TAF ISSUANCE. CLOUDS AND CHANCES FOR SHOWERS WILL INCREASE OVERNIGHT TONIGHT AND INTO FRIDAY MORNING AS THE NEXT COLD FRONT APPROACHES.
HIGH PRESSURE ALOFT WILL REMAIN ACROSS THE REGION TODAY.
940 AM CST THU JAN 15 2015 MUCH OF MID STATE CURRENTLY IN BETWEEN GULF SYSTEM AND UPPER TROUGH DROPPING DOWN FROM NORTHWEST. WITH TEMPS AT OR BELOW FREEZING EXPECT WHERE IT FALLS THE LIGHT PRECIP WILL IMPACT BRIDGES AND OVERPASSES AND THUS TRAVEL.
DUE TO THE INFLUENCE OF AN UPPER LEVEL AREA OF HIGH PRESSURE.
MODEL SOUNDINGS ARE ABOVE FREEZING BELOW 8KFT. AS MODEL TEMPERATURE PROFILES HOVER NEAR THE FREEZING LINE ABOVE 1KFT. LOW LEVEL WET BULB TEMPS ARE BELOW FREEZING WITH SURFACE WET BULB TEMPS AT OR JUST BELOW FREEZING. WITH THE SURFACE AND LOW LEVELS BEING BELOW FREEZING. DO NOT BELIEVE THERE IS A SIGNIFICANT THREAT OF FREEZING RAIN. SURFACE TEMPERATURES ARE CURRENTLY ABOVE FREEZING AND DO NOT EXPECT ADDITIONAL COOLING.
HOWEVER A NORTH TO NORTHWEST WIND SURGE EXPECTED AGAIN LATE DAY INTO TONIGHT AS GRADIENT TIGHTENS BACK FROM HIGH PRESSURE RIDGE NOSING BACK TOWARDS THE REGION.
MODELS STILL LEAN TOWARD TEMPS EDGING UP ABOVE FREEZING SO THIS COMPLICATES THE SNOWFALL POTENTIAL EVEN MORE.
558 AM EST THU JAN 15 2015 HIGH PRESSURE OVER THE LOCAL AREA WILL MOVE SOUTHEAST AND WEAKEN OVER THE CAROLINAS BY THIS EVENING. LOW PRESSURE WILL MOVE EAST ACROSS THE NORTHERN GREAT LAKES AND FORCE A TRAILING COLD FRONT TO CROSS THE AREA FRIDAY AFTERNOON.
THE LOW VFR CLOUDS WILL CLEAR OUT OF THE SW OK AND KSPS TAF SITES OVER THE NEXT FEW HOURS.
929 AM EST THU JAN 15 2015 HIGH PRESSURE OVER THE LOCAL AREA WILL MOVE SOUTHEAST AND WEAKEN OVER THE CAROLINAS BY THIS EVENING. LOW PRESSURE WILL MOVE EAST ACROSS THE NORTHERN GREAT LAKES AND FORCE A TRAILING COLD FRONT TO CROSS THE AREA FRIDAY AFTERNOON.
UPPER LEVEL RIDGE THAT HAS BEEN PRODUCING THE FOG AND STRATUS WILL ONLY LAST ANOTHER 24 HOURS OR SO FROM THE ABOVE TIME. THE RIDGE IS BREAKING DOWN WITH THE ADVANCE OF A TROUGH WITH LIGHT TO MODERATE AMOUNTS OF PRECIPITATION ASSOCIATED WITH IT. WHICH IS EXPECTED TO RISE STRONGLY WITH THE SOUTHERLY WIND AHEAD OF THIS TROUGH. BUT THEN ANOTHER TROUGH FOLLOWS CLOSE ON SUN AFTERNOON/SUN NIGHT. AIDED BY THE SECOND COOLER TROUGH.
644 AM CST THU JAN 15 2015 THE COLD FRONT IS JUST NOW (1230Z) GETTING TO GRAND FORKS. COLD FRONT WILL MOVE THROUGH THE REGION TODAY. THE LOW LEVEL BAROCLINIC ZONE WILL GET HUNG UP ACROSS THE WESTERN/SOUTHERN FA TONIGHT AS THE NEXT WAVE APPROACHES IN THE WEST/NORTHWEST FLOW ALOFT. TEMPERATURES TODAY WILL BE DEPENDENT ON THE ACTUAL LOCATION OF THE LOW LEVEL BAROCLINIC ZONE. THE LOW LEVEL BAROCLINIC ZONE WILL ADVECT BACK EASTWARD.
EARLY MORNING LOWS FRIDAY MAY DIP DOWN INTO THE UPPER 30S ACROSS INLAND AREAS OF SE GA/SUWANNEE RIVER VALLEY WHILE 40S EXPECTED ELSEWHERE AND NO SUB-FREEZING TEMPS ARE EXPECTED.
340 AM PST THU JAN 15 2015 HIGH PRESSURE AND OFFSHORE FLOW WILL MAINTAIN WARM AND DRY WEATHER FOR THE REMAINDER OF THE WEEK. UPPER LEVEL HIGH PRESSURE AND OFFSHORE FLOW WILL REMAIN THE MAIN DRIVERS OF OUR WEATHER THROUGH THE UPCOMING WEEKEND.
900 AM EST THU JAN 15 2015 HIGH PRESSURE WILL REMAIN OVER THE AREA TODAY. LOW PRESSURE TRACKING NORTH OF THE REGION WILL PULL A WARM FRONT ACROSS THE STATE THIS EVENING FOLLOWED BY A COLD FRONT ON FRIDAY. CURRENTLY INVERTED TROUGH EXTENDS WESTWARD FROM OCEAN LOW INTO THE GULF OF MAINE. THIS EVENING THE TROUGH BECOMES MORE ACTIVE WITH SOME LIGHT SNOW POSSIBLE ACROSS THE SOUTHEASTERN PORTION OF THE FORECAST AREA AND ALONG COASTAL SECTIONS. LATE TONIGHT A STRONG COLD FRONT APPROACHES FROM THE NORTHWEST. LOW PRESSURE TRACKING THROUGH CENTRAL QUEBEC WILL PULL A COLD FRONT ACROSS THE AREA ON FRIDAY.
703 AM EST THU JAN 15 2015 HIGH PRESSURE OVER THE LOCAL AREA WILL MOVE SOUTHEAST AND WEAKEN OVER THE CAROLINAS BY THIS EVENING. LOW PRESSURE WILL MOVE EAST ACROSS THE NORTHERN GREAT LAKES AND FORCE A TRAILING COLD FRONT TO CROSS THE AREA FRIDAY AFTERNOON.
1011 AM EST THU JAN 15 2015 HIGH PRESSURE IN THE FORECAST AREA WILL WEAKEN TODAY. MOISTURE WILL INCREASE AHEAD OF LOW PRESSURE IN THE GULF OF MEXICO. THE LOW WILL SHIFT OFF THE SOUTHEAST COAST TONIGHT.
COLD FRONT WILL CROSS THE AREA TONIGHT. IT WILL BE DIFFICULT FOR THE FRONT TO PRODUCE MUCH PRECIP AS UPPER LEVEL SUPPORT IS WEAK AND THE MOISTURE IS IN THE LOWER LEVELS. WILL CONTINUE WITH THE THINKING OF KEEPING HIGHEST POPS ACROSS THE NORTH AND RIDGES.
610 AM EST THU JAN 15 2015 HIGH PRESSURE IN THE FORECAST AREA WILL WEAKEN TODAY. MOISTURE WILL INCREASE AHEAD OF LOW PRESSURE IN THE GULF OF MEXICO. THE LOW WILL SHIFT OFF THE SOUTHEAST COAST TONIGHT.
VERTICAL TEMPERATURE PROFILES KEEP THE LOWER 5-7KFT OF THE ATMOSPHERE ABOVE FREEZING DURING THIS TIME PERIOD SO I AM NOT INCLUDING ANY SNOW IN THE FORECAST ACROSS NORTH GEORGIA WITH THIS SYSTEM. ISOLATED PATCHES OF DENSE FOG ACROSS NORTH GEORGIA WITH TEMPERATURES AROUND FREEZING MAY PRODUCE SOME LIGHT FREEZING FOG. HOWEVER I HAVE ISSUED A SPECIAL WEATHER STATEMENT FOR NORTH GEORGIA FOR THE SMALL POTENTIAL FOR ISOLATED SLICK SPOTS ON BRIDGES AND OVERPASSES.
439 AM CST THU JAN 15 2015 AFTER THE UPPER TROUGH OVER WESTERN PART OF THE STATE MOVES EAST OF THE AREA LATER TODAY.
MODELS WERE SHOWING A FLAT RIDGE OF HIGH PRESSURE DEVELOPING OVER THE REGION THE NEXT SEVERAL DAYS WHICH WILL KEEP THE MAIN STORM TRACK NORTH OF THE AREA.
WILL LEAVE SNOW/SLEET/RAIN WORDING IN ALONG THE HIGHWAY 82 CORRIDOR THROUGH ABOUT 15Z. LOOKING FOR THE UPPER TROUGH TO SWEEP THROUGH THE AREA LATER THIS MORNING. LOW TEMPERATURES WILL DIP DOWN INTO THE LOWER TO MID 20S TONIGHT. WHICH COULD KEEP THE FAR EASTERN ZONES FROM FALLING INTO THE LOWER 20S OVERNIGHT. WITH MUCH OF THE AREA IN THE LOWER 50S.
342 AM MST THU JAN 15 2015 HIGH PRESSURE AT THE SURFACE AND ALOFT STRENGTHENS OVER THE REGION TODAY. THEN IS FLATTENED INTO FRIDAY AS THE NEXT TROUGH WORKS INTO THE PACIFIC NW. MEANWHILE SKIES ARE MOSTLY CLEAR IN THE HIGH COUNTRY. RIDGE DURING THE END OF THE SHORT-TERM. THIS WILL AID THE NEXT TROUGH WHICH STRENGTHENS A BIT AS IT SLIDES QUICKLY PAST NORTHERN CO FRI NIGHT AND SAT. BROAD RIDGING AND MAINLY NW FLOW ALOFT DOMINATE SAT NIGHT THROUGH SUN NGT. THEN A SERIES OF WEAK DISTURBANCES RIDE OVER THE TOP OF THE RIDGE MON AND TUE.
246 AM EDT TUE APR 14 2015 A COLD FRONT WILL EXIT NORTHEAST PENNSYLVANIA AND SOUTHEAST NEW TORK EARLY THIS MORNING TAKING THE SHOWERS WITH IT.
630 AM EDT TUE APR 14 2015 HIGH PRESSURE WILL BUILD EAST INTO THE AREA TODAY FOLLOWED BY ANOTHER HIGH PRESSURE THAT WILL MOVE EAST INTO THE CENTRAL GREAT LAKES REGION BY TONIGHT.
HEIGHT RISES AND INCREASING HIGH PRESSURE SLOWLY WORK INTO THE REGION. THE CLEAR SKIES WILL PERSIST WITH HIGH PRESSURE OVERHEAD. HIGH PRESSURE AT THE SFC AND AT 500 MB WILL KEEP THE REGION DRY THROUGH THE DAY AND NIGHT.
310 AM CDT TUE APR 14 2015 WATER VAPOR ANALYSIS AS OF 08Z IS SHOWING A BIT OF A DRY SLOT PUSHING INTO MISSISSIPPI AND NW ALABAMA AND AN UPPER LOW OPENING UP OVER TEXAS. WAVES OF LOW PRESSURE ARE FORECAST TO DEVELOP AND RIDE ALONG THIS FRONT BRINGING ADDITIONAL RAINFALL FOR TUESDAY AFTERNOON THROUGH WEDNESDAY.
A DEEPENING LOW PRESSURE SYSTEM WEST OF THE REGION WILL STRENGTHEN THE PRESSURE GRADIENT TODAY RESULTING IN STRONG SOUTHERLY WINDS.
CHATTANOOGA AIRPORT, TN 66 73 56 69 / 90 80 50 60 KNOXVILLE MCGHEE TYSON AIRPORT, TN 61 73 55 68 / 90 80 40 60 OAK RIDGE, TN 64 70 54 68 / 90 80 40 60 TRI CITIES AIRPORT, TN 59 69 51 64 / 90 80 40 50.
205 AM EDT TUE APR 14 2015 HIGH PRESSURE WILL BUILD IN BEHIND A DEPARTING COLD FRONT TODAY.
111 AM EDT TUE APR 14 2015 HIGH PRESSURE WILL DRIFT INTO THE GREAT LAKES AND PROVIDE THE REGION WITH FAIR WEATHER AND SEASONABLE TEMPERATURES TUESDAY INTO WEDNESDAY.