Aikyam-Lab/Synoptic-Bench huggingface dataset:
931 PM MDT MON MAR 9 2015 QUIET WEATHER CONTINUES ACROSS THE CENTRAL ROCKIES THIS AFTERNOON AS UPPER LEVEL RIDGING BECOMES ESTABLISHED OVER THE WESTERN US. EXPECT WARM AND DRY CONDITIONS TO PERSIST THROUGH AT LEAST WED NIGHT WITH LARGE SCALE SUBSIDENCE BENEATH THE UPPER RIDGE. SHOULD SEE HIGHS A FEW DEGREES WARMER THAN TODAY. BUT IT WILL BE TOUGH TO GET MUCH WARMER THAN THE MID 50S LOCALLY IF THE GFS/NAM VERIFY WITH H7 TEMPS AROUND -2 DEG C. WARMEST DAY WILL BE WED WITH DOWNSLOPING AND GOOD SUBSIDENCE WITH THE RIDGE AXIS OVERHEAD.
548 PM MDT MON MAR 9 2015 18Z WATER VAPOR IMAGERY AND RUC ANALYSIS INDICATED SHORT WAVE TROUGH MOVING ACROSS SOUTHWEST KANSAS WITH 1. 5 PVU SURFACE INDICATING ANOTHER TROUGH SLIDING INTO THE NEBRASKA PANHANDLE. BIAS CORRECTED FIELDS THOUGH DO SUPPORT A FEW READINGS IN THE LOW 70S SO PLAN TO KEEP TEMPS CLOSE TO PREVIOUS VALUES. THE ENTIRE FORECAST AREA WILL CONTINUE TO SEE ABOVE NORMAL WARMTH AS UPPER LEVEL PATTERN IN LATEST MODEL RUNS CONTINUE TO SHOW H5/H7 RIDGE FLUCTUATING FROM THE WEST COAST ON INTO THE CENTRAL/EASTERN ROCKIES. WILL ALLOW FOR THE MOVEMENT OF THE UPPER RIDGE. RIDGE AXIS WILL NOSE OUT OVER THE PLAINS REGION FOR POTENTIALLY THE WARMEST PERIODS OF THE EXTENDED.
1049 PM CST WED JAN 21 2015 FOR 06Z TAFS /ISSUED 837 PM CST WED JAN 21 2015/ HIGH CIRRUS TYPE CLOUD COVER IS MOVING ACROSS THE SOUTHEAST ORIGINATING FROM THE POSITIVE TILTED LONGWAVE TROUGH SLOWLY MOVING ACROSS THE ROCKIES/DESERT SOUTHWEST. DESPITE THE HIGH CLOUDS, RADIATIONAL COOLING IS STILL TAKING PLACE ACROSS THE TN VALLEY. ONCE THE LOWER CLOUDS FROM LA ARRIVES LATER TONIGHT, RADIATIONAL COOLING SHOULD SUBSIDE. AHEAD OF AN UPPER TROF OVER THE SWRN US.
329 AM EST THU JAN 22 2015 WEAK COLD FRONT WHICH CROSSED YESTERDAY, WILL NUDGE BACK NORTH AS A WARM FRONT THIS AFTERNOON ALONG THE WEST COAST.
A RIDGE OF HIGH PRESSURE IS BUILDING OVER THE WEST COAST. A WARMING TREND IS LIKELY AS THE HIGH PRESSURE RIDGE BUILDS IN. THE WARMING TEND BEGINS AS TEMPERATURES SHOULD BE A FEW DEGREES WARMER THAN YESTERDAY. WOULD NOT BE SURPRISED IF WE CLIMB A COUPLE DEGREES WARMER THAN FORECAST BUT 850 MB TEMPERATURES REMAIN COOL.
HIGH PRESSURE WILL BUILD EAST ACROSS THE GREAT LAKES AND OHIO VALLEY TODAY.
THE SOUTHWEST WINDS WILL ALSO BRING A WARMER AIR MASS BACK INTO THE REGION.
417 AM EST THU JAN 22 2015 LOW PRESSURE WILL TRACK SOUTH AND EAST OF THE GULF OF MAINE TODAY.
ALL OF THIS PRECIP WAS IN RESPONSE TO A POSITIVELY TILTED LONGWAVE TROF LOCATED OVER NEW MEXICO. TEMP PROFILES CONTINUE TO SHOW THE FREEZING LINE RANGING IN THE 2-3KFT RANGE AGL WHICH COULD ALLOW FOR SOME SNOW TO MIX IN WITH THE RAIN SHOWERS. COOLER SURFACE TEMPS TONIGHT WILL ALLOW FOR ANY PRECIP TO BE A RAIN SNOW MIX. ESPECIALLY WITHIN THE HIGHER TERRAIN LOCATIONS OF PUSHMATAHA AND LE FLORE COUNTIES. LOWS ACROSS THE CWA ARE FORECAST TO RANGE FROM THE MID 20S NORTH TO THE LOW/MID 30S SOUTH.
An upper level high pressure ridge will keep the airmass dry tonight.
A DEEP MIDLEVEL TROUGH IS CAUSING SOME MILDLY DISTURBED WEATHER FROM EAST TEXAS ACROSS LOUISIANA AND ARKANSAS. SOUTH FLORIDA AND THE ISLAND CHAIN ARE DOMINATED BY A LOW LEVEL RIDGE AND ZONAL FLOW IN THE MID LEVELS. MAINLY EAST OF THE LOWER KEYS. THIS EASTERLY TROPICAL WIND FLOW IS KEEPING THE EASTERN ZONES WARMER AND MORE MOIST THAN THE EASTERN LOCATIONS WHERE LIGHTER WINDS HAVE ALLOWED LOWER TEMPS TO TAKE HOLD. AND TEMPERATURES SHOULD RAPIDLY WARM INTO THE MID 70S BY MID MORNING WITH TROPICAL DEW POINTS IN THE LOW 70S.
A HIGH PRESSURE SYSTEM WILL BRING IN SLIGHTLY COOLER AND DRY CONDITIONS THROUGH THE REST OF THE WEEK.
1219 AM EST THU JAN 22 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION OVERNIGHT.
WATER VAPOR SHOWS CENTER OF UPPER LOW MOVING ACROSS NEW MEXICO THIS EVENING WITH COLDER TEMPS ALOFT BEGINNING TO SPREAD EAST. EVENTUALLY SOME MIX OR CHANGE TO SNOW REMAINS A POSSIBILITY ACROSS PARTS OF EASTERN OK LATE TONIGHT OR EARLY THU MORNING BUT IT ALL DEPENDS ON TEMPS IN THE LOWEST LEVELS. /ISSUED 211 PM CST WED JAN 21 2015/ UPPER LOW CURRENTLY MOVING THROUGH AZ WILL CONTINUE TO PUSH EASTWARD ESPECIALLY ACROSS EAST CENTRAL/SOUTHEAST OKLAHOMA. FORECAST POINT SOUNDINGS ACROSS EAST CENTRAL OK SUGGEST LOW LEVEL TEMPERATURES PROFILES WILL FALL TO NEAR FREEZING IN THE HEAVIER PRECIP TONIGHT WITH THE POTENTIAL FOR RAIN TO TRANSITION TO SNOW.
1158 PM EST WED JAN 21 2015 GRADUAL EROSION OF MOISTURE WITHIN THE LOWEST LEVELS UNDERWAY ACROSS SOUTHEAST MICHIGAN. GIVEN THE GRADUAL WEAKENING OF THE FORCING AND TRANSIENT NATURE OF THE HIGHER INTENSITY SNOW. MID LEVEL SHORT WAVE RIDGING WILL OVERSPREAD LOWER MI LATE THIS EVENING INTO THE OVERNIGHT. THE PROLONGED CLOUD COVER SHOULD HOLD MIN TEMPS IN THE LOW 20S. THIS TROUGH APPEARS RATHER BENIGN WITH VERY LITTLE UPWARD MOTION ASSOCIATED WITH IT. COLD AIR ADVECTION ALONG THE TROUGH WILL BRING H85 TEMPS DOWN TO -10C.
CLOUDS CONTINUE TO MOVE CLOSER TO THE REGION AHEAD OF THE NEXT UPPER LEVEL TROUGH.
AN UPPER LEVEL TROUGH WAS LOCATED IN THE FOUR CORNERS REGION THIS MORNING AND SHOULD CONTINUE TO DIG SOUTH INTO SW TX BY THIS AFTERNOON. CURRENT HIRES AND SHORT TERM MODELS ALL SUGGEST SOME LIGHT PRECIP MAKING IT INTO NW ALABAMA LATER THIS AFTERNOON BUT BELIEVE THAT WITH HOW MUCH DRY AIR IS LOCATED IN THE LOWEST LEVELS OF THE ATMOSPHERE THAT IT WILL TAKE AWHILE TO SATURATE. BY THIS EVENING/OVERNIGHT FORECAST SOUNDINGS SHOW THE LOWER LEVELS BECOMING SATURATED AND LIGHT PRECIP SPREADING ACROSS THE ENTIRE AREA.
243 AM EST THU JAN 22 2015 HIGH PRESSURE WILL LINGER ACROSS NORTHERN NEW ENGLAND TODAY AND TONIGHT AS A LOW PRESSURE SYSTEM PASSES WELL TO OUR SOUTH.
336 AM EST THU JAN 22 2015 A WEAK TROUGH OF LOW PRESSURE WILL MOVE ACROSS EASTERN CANADA AND THE NORTHEAST UNITED STATES TODAY.
/ISSUED 934 PM CST WED JAN 21 2015/ A POSITIVELY TILTED UPPER LEVEL TROUGH AXIS EXTENDING FROM THE CENTRAL PLAINS INTO THE FOUR CORNERS REGION WILL CONTINUE TO MOVE EAST TONIGHT. CURRENT H5 ANALYSIS CENTERS AN UPPER LOW OVER THE GREAT LAKES REGION WITH A LOW AMPLITUDE WAVE DEVELOPING OVER ARIZONA.
THE LOWER AMOUNTS WILL BE FOUND ON THE NORTHEAST PART OF THE AREA, WHILE THE HEAVIEST AMOUNTS WILL BE TOWARDS MORTON COUNTY. HIGH TEMPERATURES WILL BE AROUND 40 BUT COOLER OVER SNOW COVERED AREAS ACROSS FAR SOUTHWEST KANSAS IN THE LOW TO MID 30S. AN UPPER LEVEL RIDGE AXIS WILL REMAIN OVER THE WESTERN STATES. AN UPPER LOW REMAINS ANCHORED OVER HUDSON'S BAY WITH A TROUGH EXTENDING SOUTH INTO THE EASTERN CONUS.
AN UPPER LOW WILL DROP SOUTH ALONG THE NEW MEXICO BORDER THROUGH THIS EVENING GENERATING A FEW SHOWERS ALONG THE BORDER AND FORCING COLDER ACROSS THE STATE ON NORTHERLY BREEZES.
WEAK HIGH PRESSURE WILL RIDGE EAST ACROSS OUR REGION TODAY. STRONGER HIGH PRESSURE. LED BY A WEAK BACK DOOR COLD FRONT.
1134 PM CST Wed Jan 21 2015 Quiet weather is expected to continue across the region for the next several days as a longwave trough sinks down the High Plains and eventually exits later this week. Cooler air associated with the trough has already begun filtering into the region; however, surface heating has not only allowed temperatures to climb into upper 40s to lower 50s, but has also resulted in enough low-level instability to produce a fairly widespread cu field across much of the CWA.
353 AM CST THU JAN 22 2015 TRANQUIL WEATHER DURING THE PERIOD WITH CLOUDS BEING THE MAIN FORECAST PROBLEM AS HIGH PRESSURE TRIES TO BUILD IN FROM THE DAKOTAS. LOW-LEVEL RIDGE AXIS WILL SHIFT THROUGH AND TO THE SOUTHEAST TODAY RAPIDLY BACKING THE FLOW TO W/SW BY AFTERNOON.
STRONGLY POSITIVELY TILTED UPPER-DECK TROF EXTENDS FROM THE UPPER MS VALLEY ALL THE WAY TO BAJA CA. TODAY AND TONIGHT: THE UPPER-DECK TROF DISCUSSED IN THE "SYNOPSIS" WILL MOVE EAST FROM AZ. WHILE TODAY'S HIGHS WILL BE VERY CLOSE TO NORMAL (LOWER 40S) THE RETURNING SW FLOW WOULD INHIBIT TEMPERATURE DECREASE TO SOME 'DEGREE' WITH LOWS IN THE LOWER 20S FOR ALL AREAS.
Temperatures are holding steady in the lower to middle 30s beneath the cloud deck, but have dipped into the upper 20s where less cloud cover prevails. Thanks to the clouds and a very light N/NW wind, temps will be cooler than in previous days.
BUILDING HIGH PRESSURE AND SEASONABLE TEMPERATURES ARE EXPECTED TO RETURN OVER THE WEEKEND. A COLD FRONT WILL ALSO SWEEP ACROSS THE AREA SO LOOK FOR A CONTINUATION OF BELOW NORMAL TEMPERATURES.
1243 AM EST THU JAN 22 2015 A PRESSURE RIDGE WILL BE NORTH OF THE FORECAST AREA TONIGHT AND THURSDAY. AN INCREASE IN MOISTURE WILL OCCUR THURSDAY NIGHT AHEAD OF LOW PRESSURE DEVELOPING NEAR THE TEXAS GULF COAST.
A LARGE LOW PRESSURE SYSTEM WAS CENTERED OVER NORTHERN ALBERTA/SASKATCHEWAN WITH A WARM FRONT EXTENDING SOUTH ALONG THE FRONT RANGE TO CENTRAL MONTANA AND WYOMING. THE SOUTHEAST HALF OF THE STATE WAS UNDER THE INFLUENCE OF A DEPARTING HIGH PRESSURE RIDGE AXIS. THE SURFACE PRESSURE GRADIENT TIGHTENS AS THE WARM FRONT MOVES EAST ACROSS NORTH DAKOTA TODAY. THE MID LEVEL AND SURFACE TEMPERATURES DURING THE NIGHTTIME HOURS WILL HOVER AROUND THE FREEZING MARK - AND EXPECT A MIX OF RAIN. WITH THE POSSIBILITY OF SOME FREEZING RAIN AS WELL.
THEN RISE DURING THE NIGHTTIME HOURS AS SOUTHWEST WINDS BECOME ESTABLISHED AND INCREASE WITH THE APPROACH OF THE LARGE LOW PRESSURE SYSTEM OVER NORTHERN ALBERTA/SASKATCHEWAN AND THE WARM FRONT THAT EXTENDED SOUTH TO CENTRAL MONTANA AND WYOMING.
While high clouds have been streaming into northeast KS from this system, they will only act to keep early morning temperatures a bit warmer in the middle to upper 20s. These clouds have also helped keep morning temps a bit warmer, but are expected to only gradually decrease through today and will likely keep high temperatures cooler.
LOW LEVEL FLOW BACKS TO THE WEST THRU THE DAY AS WEAK HIGH PRESSURE RIDGE AXIS MOVES ACROSS WI. WILL KEEP LOWS TNGT A LITTLE WARMER WITH 925H TEMPS INITIALLY AROUND -8C.
MOISTURE HAS BEGUN TO MOVE INTO THE REGION AHEAD OF A DEVELOPING LOW PRESSURE SYSTEM WHICH IS LOCATED OVER SOUTH TEXAS. AS THE LOW MOVES EAST TODAY SOME LIGHT RAIN IS EXPECTED TO SPREAD INTO THE FORECAST AREA.
1000 PM MST WED JAN 21 2015 WATER VAPOR AND UPPER AIR ANALYSIS INDICATE A PAIR OF UPPER LEVEL TROUGHS OVER THE WESTERN CONUS. THE NORTHERN TROUGH HAS BEEN SLIDING SOUTHWARD TOWARD THE STRONGER ONE OVER SOUTHERN CALIFORNIA. AHEAD OF THESE TWO TROUGHS. UPPER LEVEL MOISTURE HAS BEEN POOLING OVER THE SOUTHERN ROCKIES AND ONTO THE HIGH PLAINS. MEANWHILE SNOWFALL HAS DEVELOPED OVER THE LEE OF THE ROCKIES AHEAD OF THESE TROUGHS. TONIGHT DRIER AIR WILL MOVE IN FROM THE NORTH THROUGH THE NIGHT WITH A 500MB TROUGH THAT WILL ACCOMPANY THE NORTHERN TROUGH AS IT CONTINUES SOUTHWARD. THERE MAY BE SOME LIGHT SNOW OVER THE FAR SOUTH DUE TO SOME LINGERING LIFT AHEAD OF THE 500MB TROUGH. THURSDAY WILL BE CLEAR WITH LIGHT WINDS AS A 850MB RIDGE MOVES OVERHEAD. TEMPERATURES WILL BE AT OR SLIGHTLY WARMER THAN TODAY.
400 AM EST THU JAN 22 2015 SURFACE RIDGING WILL PASS BY TO OUR NORTH TODAY AND TONIGHT AND PROVIDE A CONTINUATION OF FAIR WEATHER. A MID/UPPER LEVEL TROUGH OVER NEW MEXICO EARLY THIS MORNING WILL SHIFT EASTWARD.
PATCHY FOG IS STILL POSSIBLE ESPECIALLY WHERE THE STRATUS INTERSECTS THE HIGHER TERRAIN.
LATEST GUIDANCE CONTINUES TO COME IN WARMER WHICH SUPPORTS THE IDEA THAT PRECIPITATION WILL REMAIN ALL RAIN. TEMPERATURES REMAINED WELL ABOVE FREEZING WITH MID TO UPPER 40S WEST OF I-35/35W TO 50 TO 55 DEGREES TO THE EAST. LOWS WILL ALSO REMAIN ABOVE FREEZING AND IN THE MID-UPPER 30S ACROSS THAT AREA. WARMER ACROSS THE REMAINDER OF OUR CWA.
144 AM PST THU JAN 22 2015 UPPER RIDGE OF HIGH PRESSURE BUILDING IN OVER THE REGION WILL PROVIDE CLEARING CONDITIONS AND WARMER TEMPERATURES FOR THE WEEKEND.
HIGH PRESSURE ALOFT WILL EXPAND EAST ACROSS THE WESTERN STATES THROUGH THE LATTER HALF OF THE WEEK. THE UPPER RIDGE ALONG THE WEST COAST THIS EVENING WILL EXPAND EAST ACROSS MUCH OF THE WESTERN CONUS THROUGH THE BALANCE OF THE WEEK. ONCE ESTABLISHED THIS RIDGE WILL REMAIN LOCKED IN ACROSS THE REGION THIS WEEKEND THROUGH EARLY IN THE UPCOMING WEEK.
436 AM EST THU JAN 22 2015 WEAK RIDGE OF HIGH PRESSURE WILL BE ACROSS THE FORECAST AREA THROUGH TODAY AS LOW PRESSURE DEVELOPS OVER THE WESTERN GULF WATERS.
1025 PM MST WED JAN 21 2015 AFTERNOON GOES WATER VAPOR ANIMATION SHOWED A POSITIVELY-TILTED UPPER TROUGH FROM THE UPPER MIDWEST TO THE FOUR CORNERS REGION. SKIES WERE PARTLY TO MOSTLY CLOUDY WITH TEMPERATURES FROM THE LOW 20S TO MID 30S. UPPER RIDGE AXIS ALONG THE WEST COAST WILL BROADEN AND GRADUALLY EXPAND EAST INTO THE INTERMOUNTAIN WEST DURING THE NEXT 24 TO 48 HOURS.
353 AM CST THU JAN 22 2015 WIDESPREAD RAINFALL IS ONGOING ACROSS MUCH OF THE STATE THIS MORNING AS SOUTHWESTERLY FLOW ALOFT IS CAUSING OVERRUNNING ACROSS THE COOLER AIRMASS IN PLACE BEHIND THE FRONT THAT MOVED TO THE COAST YESTERDAY. RAINFALL COVERAGE WILL INCREASE ACROSS THE REGION LATER THIS MORNING WITH THE APPROACH OF A LARGE UPPER LEVEL TROUGH AND THE DEVELOPMENT OF A COASTAL TROUGH AHEAD OF IT.
1222 AM EST THU JAN 22 2015 LOW PRESSURE MOVES ACROSS TONIGHT. HIGH PRESSURE WILL BUILD IN TO END THE WEEK. PATCHY FRZG DRIZZLE WL BE PSBL ESP IN THE RIDGES.
AS WINDS BECOME SOUTHWESTERLY BEHIND EXITING HIGH PRESSURE TO THE SOUTHEAST. TAPERING BACK TO LOWER 30S FROM EAST CENTRAL SOUTH DAKOTA THROUGH SOUTHWESTERN MINNESOTA INTO THE SPENCER/STORM LAKE CORRIDOR WHERE CLOUDS MAY HANG A LITTLE LONGER AND THERMAL PROFILES ARE COOLER.
THE HIGHER THE TOTALS. THE REASON IS SURFACE TEMPERATURES IN MANY AREAS ARE EITHER RIGHT AT OR A DEGREE OR TWO ABOVE FREEZING.
912 PM MST WED JAN 21 2015 LOW PRESSURE MOVING THROUGH NORTHERN ARIZONA WILL BRING SCATTERED SHOWERS FROM A PAYSON TO WINDOW ROCK LINE SOUTHWARD THIS EVENING WITH CLEARING CONDITIONS ELSEWHERE. BUILDING HIGH PRESSURE AND SEASONABLE TEMPERATURES ARE EXPECTED TO RETURN OVER THE WEEKEND. A LINE OF SHOWERS ASSOCIATED WITH AN UPPER LEVEL TROUGH IS STRETCHING SOUTHWEST TO NORTHEAST FROM AROUND PAYSON TO WINDOW ROCK THIS AFTERNOON AND MOVING TO THE SOUTHEAST. THIS COLDER DISTURBANCE WILL KEEP TEMPERATURES WELL BELOW NORMAL AND HIGH TEMPERATURES THURSDAY WILL BE EVEN COOLER THAN TODAY.
MOST OF THE ACTIVITY IN THE SHORT TERM WON'T ARRIVE UNTIL TONIGHT WITH THE LOW MOVING ACROSS TEXAS AND DRAWING UP MOISTURE FROM THE GULF INTO OUR AREA. THIS DELAY SHOULD HELP SHIFT ALMOST ALL OF THE PRECIP TONIGHT TO LIQUID, EXCEPT IN THE HIGHER ELEVATIONS WHERE COLDER TEMPS SUPPORT SOME POTENTIAL SNOW.
AS ONE WOULD EXPECT WITH A POSITIVELY TILTED SYSTEM, THE BULK OF THE PRECIPITATION OCCURRED WELL AHEAD OF THE TROUGH AXIS. AS THE AXIS OF THE TROUGH APPROACHES WESTERN KANSAS TODAY, ONLY SOME SCATTERED CLOUD CAN BE EXPECTED WITH DAYTIME HEATING. GIVEN THE LACK OF ARCTIC AIR BEHIND THIS SYSTEM, HIGHS SHOULD REACH INTO THE LOWER 40S ACROSS MOST OF SOUTHWESTERN KANSAS, EXCEPT FOR POSSIBLY SOME MID TO HIGH 30S IN THE SOUTHWEST CORNER WHERE SOME PLACES RECEIVED AN INCH OR SO OF SNOW. AN UPPER LEVEL RIDGE AXIS WILL REMAIN OVER THE WESTERN STATES. AN UPPER LOW REMAINS ANCHORED OVER HUDSON'S BAY WITH A TROUGH EXTENDING SOUTH INTO THE EASTERN CONUS.
1147 PM EST WED JAN 21 2015 A TROUGH OF LOW PRESSURE WILL SHIFT SOUTHEAST OF THE FORECAST AREA OVERNIGHT. HIGH PRESSURE WILL BUILD EAST ACROSS THE GREAT LAKES ON THURSDAY.
1120 PM CST WED FEB 4 2015 WATER VAPOR SATELLITE IMAGERY SHOWS A MID-LEVEL TROUGH ROTATING SOUTHEAST ACROSS THE REGION. STEEP LAPSE RATES UNDER THIS TROUGH WAS PRODUCING SCATTERED-BROKEN CUMULUS AND A FEW FLURRIES. LOOK FOR THIS TROUGH TO SLIDE OFF TO THE EAST THIS EVENING AS HIGH PRESSURE BUILDS OVER THE UPPER MISSISSIPPI RIVER VALLEY REGION. VERY LIGHT WINDS EXPECTED OVERNIGHT AS THE HIGH DRIFTS OVERHEAD.
945 PM MST WED FEB 4 2015 DECIDED TO CANCEL WINTER STORM WARNINGS A FEW HOURS BEFORE THEIR CANCELLATION AS DRIER AIR HAS MOVED INTO THE LOWER LEVELS AND SNOW HAS STOPPED ACROSS THE WARNING AREAS. NO PRECIPITATION IS EXPECTED AS HIGH PRESSURE BUILDS IN FROM THE WEST TONIGHT. TEMPERATURES HAVE HAD LITTLE TROUBLE WARMING UP IN THE LOWER ELEVATIONS WITH MID 30S TO MID 40S IN THE HIGH VALLEYS AND UPPER 40S TO UPPER 50S LOWER VALLEYS. WITH CONCERNS MAINLY ASSOCIATED WITH TRAVEL AT THE HIGHER ELEVATIONS INCLUDING VAIL PASS. THE GRADIENT STAYS RATHER TIGHT AT MOUNTAIN TOP LEVELS ON THURSDAY SO EXPOSED RIDGES ARE LIKELY TO BE BREEZY.
AT THE START OF THE TAF PERIOD THE COLD FRONT WAS ROUGHLY ALONG A LINE FROM NEAR KTYR. /ISSUED 917 PM CST WED FEB 4 2015/ CURRENTLY WATCHING A STRONG COLD FRONT WHICH AS OF 03Z WAS LOCATED NEAR A SRC/FSM/PRX/TRL/SJT LINE.
318 AM EST THU FEB 5 2015 STRONG COLD FRONT CROSSES OVERNIGHT.
WHEN SNOW AND A BRIEF TRANSITION TO FREEZING RAIN ARE POSSIBLE. AFTERNOON HIGH TEMPERATURES SHOULD CLIMB ABOVE FREEZING FOR MOST OF THE AREA SOUTH AND WEST OF THE MISSOURI RIVER. SOUTHWEST OF THERE SNOWFALL SHOULD QUICKLY DECREASE AND MAY TRANSITION TO LIGHT FREEZING RAIN AS STRONG WARM ADVECTION IN THE H8 LAYER NOSES UP INTO WESTERN NORTH DAKOTA.
WITH HIGH PRESSURE CENTERED OVER THE DAKOTAS. A RIDGE IS IN PLACE ALONG THE WEST COAST. A QUICK WARMUP WILL TAKE PLACE LATE THIS WEEK AS HIGH PRESSURE MOVES EAST OF THE REGION AND UPPER LEVEL RIDGE MOVES EAST INTO THE REGION. THURSDAY WILL BE A VARIABLY CLOUDY DAY AS THE WARMER AIR CONTINUES TO BUILD IN.
NO SERIOUS THREAT FOR ANY SIGNIFICANT COLD AIR INTRUSIONS EXPECTED INTO THE LOWER 48.
1134 PM CST WED FEB 4 2015 ARCTIC HIGH PRESSURE WILL MOVE INTO IA TONIGHT AND PASS EAST ON THURSDAY. WITH CLEARING ALREADY PRESENT ACROSS THE MAJORITY OF THE CWA AS A LARGE AREA OF ARCTIC HIGH PRESSURE BUILDS INTO THE STATE. CENTER OF THE HIGH EXPECTED TO DROP SOUTH SOUTHEAST THROUGH THE NIGHT JUST SKIRTING THE WESTERN CWA. MUCH WARMER PACIFIC AIR WILL FLOOD THE STATE. TEMPERATURES WILL NOT FALL OFF MUCH FROM THE HIGHS TOMORROW THOUGH THE NIGHT TOMORROW NIGHT WITH 30 TO 40 DEGREE TEMPS BY FRI.
ADDITIONALLY WILL BE SEEING A REINFORCING COLD FRONT ADVANCING ACROSS THE AREA THROUGH THE MORNING HOURS.
HIGH PRESSURE WILL CONTINUE TO SLIDE BY TO THE SOUTH OF WISCONSIN TODAY. WHILE A TROF OF LOW PRESSURE CLIPS NORTHERN WISCONSIN AS IT TRACKS ACROSS SOUTHERN CANADA.
354 AM CST Thu Feb 5 2015 It will be much cooler across the area today as cold advection continues behind a strong cold front that moved through the region late Wednesday. There is the potential for some patchy freezing fog early this morning, so those traveling should be prepared for visibility reductions as well as slick spots on roadways, particularly on bridges and overpasses.
105 AM EST THU FEB 5 2015 A COLD FRONT WILL EXIT THE AREA OVERNIGHT.
243 AM MST THU FEB 5 2015 EARLY MORNING WV IMAGERY AND RAP H5 ANALYSIS SHOWS AMPLIFIED RIDGE EXTENDING FROM MEXICO TO BRITISH COLUMBIA CANADA WITH NW FLOW ACROSS THE PLAINS.
AN UPPER LEVEL RIDGE OVER THE FOUR CORNERS REGION WILL SLOWLY SLIDE EASTWARD INTO THE ROCKIES TODAY INTO TONIGHT WITH AN UPPER LEVEL LONG WAVE TROUGH CONTINUING ABOVE EASTERN CANADA. LEE TROUGHING WILL DEVELOP THIS MORNING SHIFTING WINDS TO MORE OF A SOUTHWESTERLY DIRECTION TODAY THEN MORE OF A WESTERLY DIRECTION BY SUNRISE TOMORROW. UPPER LEVEL RIDGING WILL GENERALLY REMAIN ACROSS THE WESTERN UNITED STATES FOR THE NEXT TWO WEEKS, WITH TROUGHING OVER THE MIDWEST AND EAST COAST REGIONS.
Northeast winds are subsiding as a cold front pushes to the south. A cold front just moved across Lubbock with the cold air a little ways behind the front. Low clouds/fog along with much colder temps are in the northern TX Panhandle with Amarillo sitting at 28 degrees with freezing fog. The cold front will blast across the CWA late this aftn and evening. Temps will be colder tonight with freezing fog possible.
A COLD FRONT CONTINUES TO TRACK SOUTH AND EAST TOWARD THE SOUTHERN APPALACHIAN REGION. THE WARMER TEMPERATURES ACROSS THE VALLEY SHOULD ALLOW THE INITIAL PRECIPITATION TO FALL AS A LIGHT RAIN OR RAIN/SNOW MIX. THESE ACCUMULATIONS WILL ONLY OCCUR IN THE HIGHEST ELEVATIONS /ABOVE 3000 FT OR SO/.
1252 AM EST THU FEB 5 2015 CIGS WILL QUICKLY LOWER TO MVFR LEVELS EARLY THIS MORNING AS A COLD FRONT APPROACHES THE AREA FROM THE NORTHWEST.
254 AM CST Thu Feb 5 2015 The upper level trough that brought 1 to 3 inches of snow across northern and east central counties yesterday will amplify across the east central US Today. After a cold morning start, highs should warm into the lower to mid 30s across much of the CWA. Tonight lows in the lower to mid 30s will probably occur just after Midnight.
328 AM EST THU FEB 5 2015 AS AN ARCTIC COLD FRONT CROSSES THE REGION.
AT 05Z COLD FRONT WAS JUST ENTERING THE EWX CWA. COLD FRONT SHOULD REACH THE AUS AREA AROUND 08Z. STRONG N WINDS WILL DEVELOP BEHIND THE COLD FRONT AND PERSIST THROUGH LATE MORNING. UPPER AIR ANALYSIS THIS MORNING SHOWED THE UPPER LOW HAD OPENED INTO A WAVE OVER TEXAS. A COLD FRONT WAS STRETCHED ACROSS OKLAHOMA AND THE TEXAS PANHANDLE. DURING THIS PERIOD THE UPPER TROUGH WILL MOVE OFF TO THE EAST AND NORTHWESTERLY FLOW WILL MOVE OVER TEXAS. THE SURFACE COLD FRONT WILL DROP THROUGH OUR CWA TONIGHT. NORTHERLY WINDS AND COOLER AIR WILL MOVE IN THURSDAY DURING THE DAY.
SUB FREEZING TEMPERATURES ARE KNOCKING ON OUR DOOR IN NORTHERN AND WESTERN PORTIONS OF THE MIDSOUTH. RESIDUAL HEAT SHOULD HELP ROADS FROM FREEZING TOO QUICKLY. /ISSUED 305 PM CST WED FEB 4 2015/ 20Z SURFACE MAP SHOWED A COLD FRONT OVER SOUTHEAST MO. WITH WEST PLAINS IN THE LOWER 50S. ABOUT THE TIME THE SURFACE FREEZING LINE DROPS TO A POSITION PARALLEL AND ABOUT 30 MILES NORTH OF I40. WHERE SNOWFALL AND CONCURRENT SUBFREEZING TEMPS LIMIT MELTING.
THE COLD FRONT HAS PUSHED INTO NORTHWEST TENNESSEE EARLY THIS EVENING. COLD FRONT TO THE NORTH WAS MAKING STEADY PROGRESS.
/ISSUED 646 PM EST WED FEB 4 2015/ PLANNING TO WARM UP THE LOWS TONIGHT FOR MOST AREAS A FEW DEGREES. MAINLY DUE TO THE COLD FRONT STILL WELL BACK INTO THE MID MS VALLEY REGION WITH AMPLE CLOUDS AND A WARM SW FLOW AHEAD OF THE FRONT. THE SLIGHTLY WARMER LOWS WOULD LINE UP BETTER WITH THE LATEST MOS GUIDANCES FOR THE AREA. /39 SOME LIGHT RETURNS ARE EVIDENT ON THE RADAR IN CENTRAL GEORGIA AHEAD OF A LOW PRESSURE SYSTEM THAT WILL MOVE ALONG THE GULF COAST OVERNIGHT. A COLD FRONT WILL ENTER NW GEORGIA BY TOMORROW MORNING AS WELL. USHERING IN BREEZY AND COOLER CONDITIONS FOR THURSDAY. WITH PERHAPS A LIGHT DUSTING AT MOST FOR THE HIGHEST ELEVATIONS IN THE MOUNTAINS.
407 AM EST THU FEB 5 2015 LOW PRESSURE WILL INTENSIFY EAST OF THE GULF OF MAINE TODAY THEN TRACK EAST OF NOVA SCOTIA TONIGHT.
343 AM CST THU FEB 5 2015 CURRENT WATER VAPOR IMAGERY SHOWS A BROAD UPPER TROUGH OVER MUCH OF THE EASTERN CONUS. WITH UPPER LEVEL RIDGING OVER THE WESTERN CONUS. THANKS TO A SURFACE COLD FRONT. TEMPERATURES WERE WARMING INTO THE LOW TO MID 40S AS THE BOUNDARY LAYER WINDS STRENGTHEN. WITH NO ACCUMULATIONS EXPECTED DUE TO THE LIGHT INTENSITY AND WARMER TEMPERATURES. AS HIGH PRESSURE BUILDS IN FROM THE NORTHWEST.
THIS LEFT THE FORECAST AREA BETWEEN THE HIGH AND DEPARTING LOW PRESSURE TO THE EAST. THE HIGH PRESSURE MOVES OVER THE REST OF THE AREA TONIGHT AND REACHES THE EASTERN EDGE OF THE NW WI ZONES BY 12Z THURSDAY. COLDEST MIN TEMPS WILL BE OVER THE CANADIAN BORDER TO THE ARROWHEAD AND IN NW WI UNDER THE RIDGE AXIS BY 12Z. WAA CONTINUES AS AN UPPER LEVEL TROF MOVES INTO NW ONTARIO.
330 AM CST THU FEB 5 2015 ARCTIC HIGH PRESSURE IS QUICKLY BUILDING ACROSS THE REGION EARLY THIS MORNING.
1236 AM EST THU FEB 5 2015 LOW PRESSURE MOVING THROUGH NORTHERN FLORIDA TONIGHT WILL BE OFF THE SOUTHEAST COAST THURSDAY. THE LOW WILL BE WELL NORTHEAST OF THE FORECAST AREA BY LATE THURSDAY. DRY WEATHER WILL RETURN THURSDAY INTO THE WEEKEND AS HIGH PRESSURE SETTLES OVER THE AREA.
315 AM EST THU FEB 5 2015 A COLD FRONT WILL MOVE EAST OF THE AREA TODAY.
1248 AM EST THU FEB 5 2015 STRONG COLD FRONT CROSSES OVERNIGHT.
SO HAVE INCLUDED THE LOW VSBYS IN TEMPOS. COLD FRONT WAS LOCATED FROM SOUTHEAST OF THE DFW METROPLEX SOUTHWEST TO THE LOWER TRANS PECOS REGION. WINDS ARE EXPECTED TO SHIFT TO NORTH WITH A PRE-FRONTAL TROUGH OVERNIGHT IN ADVANCE OF THE FRONT. GENERAL LIGHT AND VARIABLE FLOW THROUGH THE OVERNIGHT WITH MFVR/IFR CEILINGS AHEAD OF AN APPROACHING COLD FRONT. BUT AREAS OF FOG AND THE LOWEST VISIBILITIES ALONG THE COAST AND COASTAL PLAINS. A COLD FRONT WILL ENTER THE NORTHERN BORDER OF THE AREA AROUND 09-10Z AND MAKE IT TO THE COAST AROUND 12Z. BUT FEEL THE LOW-LEVEL DRY AIR SHOULD EVAPORATE THE PRECIPITATION.
FORTUNATELY TEMPERATURES WILL SLOWLY RISE OVERNIGHT WITH TEMPERATURES RISING ABOVE FREEZING SHORTLY AFTER SUNRISE TOMORROW.