Aikyam-Lab/Synoptic-Bench huggingface dataset:
1114 PM CST SUN NOV 8 2015 LOW PRESSURE SYSTEM WILL DIG INTO THE DESERT SOUTHWEST NEXT 24 HOURS. /ISSUED 341 PM CST SUN NOV 8 2015/ TONIGHT WILL NOT LIKELY BE AS COOL WITH SURFACE RIDGING SLIDING EAST OF THE AREA. UPPER LEVEL SHORT WAVE RIDGING WILL MOVE IN TONIGHT AND TOMORROW IN THE WAKE OF A LOW BEING PINCHED OFF NORTHEAST OF THE REGION. A DEEP UPPER LEVEL TROUGH MOVING ONSHORE ON THE WEST COAST WILL ENCOURAGE DEVELOPMENT OF SURFACE CYCLOGENESIS IN THE LEE OF THE ROCKIES. WITHIN A TIGHTENING PRESSURE GRADIENT OUT AHEAD OF WELL ADVERTISED UPPER LEVEL LOW. UPDATED MODEL GUIDANCE HAS SHIFTED TOWARD A FASTER TRANSITION INTO THE CENTRAL PLAINS ALONG WITH PASSING THE UPPER LEVEL LOW FARTHER TO THE NORTH THAN PREVIOUS RUNS.
A WEAK HIGH PRESSURE SYSTEM WILL SPREAD EASTWARD OFF OF THE SOUTHEASTERN UNITED STATES BEGINNING MID WEEK. THE MID LEVEL RIDGE WILL BE LOCATED MORE SQUARELY ALONG THE KEYS.
100 AM EST MON NOV 9 2015 HIGH PRESSURE WILL BUILD SOUTH OF THE AREA TONIGHT AND MONDAY THEN CREST OVER THE REGION ON TUESDAY.
HIGH PRESSURE AND CLEAR SKIES WITH NORTHEAST WINDS WILL ALLOW AFTERNOON TEMPERATURES TO RECOVER INTO THE UPPER 60S TO LOWER 70S TODAY. TUESDAY LOOKS TO BE A BIT WARMER AS HIGH PRESSURE BEGINS TO EXIT OFF TO THE EAST AND WINDS SWINGING AROUND TO THE SOUTHEAST LATE IN THE DAY.
AN UPPER LEVEL TROUGH OF LOW PRESSURE OFF THE WEST COAST WILL KEEP SOUTHWESTERLY FLOW ACROSS THE CWA GOING THROUGH AT LEAST TUESDAY. BUT FAIRLY STRONG HIGH PRESSURE EAST OF THE REGION WILL CONTINUE PRODUCING GUSTY SOUTHERLY WINDS THROUGH A MAJORITY OF THE PERIOD FOR THE EASTERN HALF OF THE CWA. TEMPERATURES ON MONDAY WILL BE SLIGHTLY COOLER.
THIS TREND IS EXPECTED TO CONTINUE INTO TOMORROW MORNING AS THE UPPER LOW LIFTS ACROSS THE REGION. CURRENTLY WATCHING THE LOW LIFT NORTHWARD.
WATER VAPOR SATELLITE TRENDS THIS EVENING PLACE AN UPPER LEVEL LOW OVER SOUTHEAST KANSAS THIS EVENING. TEMPERATURES ACROSS THE MID SOUTH RANGE FROM THE LOWER TO MIDDLE 40S ACROSS THE NORTHERN THIRD OF THE FORECAST AREA. GUIDANCE HAS BEEN TOO LOW WITH LOW TEMPERATURES THUS WILL GO WARMER THAN PREVIOUS FORECAST WITH READINGS IN THE LOWER 40S TO LOWER 50S. WINDS WILL BEGIN TURNING AROUND TO THE SOUTH AS HIGH PRESSURE OVER THE OHIO VALLEY SHIFTS EAST. THIS WILL BRING WARMER TEMPERATURES AND AN INCREASE IN MOISTURE TO THE AREA. BOTH MODELS INDICATE THE SYSTEM MAY OCCLUDE PINCHING OFF THE HIGHER DEWPOINTS THAT WILL BE TRYING TO MOVE UP THE DELTA.
1244 AM EST MON NOV 9 2015 HIGH PRESSURE OVER THE REGION WILL SLIDE OFFSHORE ON MONDAY AND MONDAY NIGHT. LOW PRESSURE PASSES SOUTH AND EAST OF THE REGION TUESDAY THROUGH TUESDAY NIGHT.
MODELS CONTINUE TO SHOW DRY AND QUIET CONDITIONS OVER SOUTHERN WISCONSIN WITH THE UPPER MIDWEST UNDER WEAK RIDGING ASSOCIATED WITH NORTHERN BRANCH OF SPLIT UPPER LEVEL FLOW. WITH A DEGREE OR TWO COOLER NEAR LAKE MICHIGAN WITH WINDS A BIT MORE SOUTH THAN SOUTHWEST BY THIS AFTERNOON. THOUGH A FEW DEGREES WARMER IN THE FAR SOUTHEAST TO ACCOUNT FOR THE POTENTIAL OF A FEW CLOUDS. WINDS WILL BE SOUTHERLY IN SOUTHERN WI AS LOW PRESSURE DEVELOPS OVER THE PLAINS.
TEMPERATURES SO FAR TODAY HAVE WARMED INTO THE LOWER 60S OVER A LARGE PORTION OF SOUTHWEST INTO CENTRAL NORTH DAKOTA WITH UPPER 50S ELSEWHERE. OVERNIGHT LOWS TONIGHT SHOULD BE IN THE LOWER 30S WITH MOSTLY CLEAR SKIES AS THE BAND OF CIRRUS EVENTUALLY MOVES OFF. A COLD FRONT WILL APPROACH THE NORTHWEST. GENERALLY COOLER BUT ABOVE NORMAL TEMPERATURES EXPECTED MONDAY WITH AN INCREASE IN CLOUDS.
TONIGHT HIGH PRESSURE IN CONTROL WITH CLEAR SKIES AND LIGHT AND VARIABLE WINDS THROUGH THE NIGHT. THIS SHOULD BE IN LINE WITH THE COOLER GFS/MAV GUIDANCE. AND FACTORING IN THE HIGHS TODAY IN THE LOWER 50S. AS RIDGE AXIS ALOFT AND AT THE SURFACE ARRIVES TUESDAY NIGHT. ALLOWING FOR MINS TO FALL INTO THE LOW/MID 30S.
CONDITIONS SHOULD IMPROVE TO VFR AT ALL OF THE TAF SITES BY LATE MORNING OR MID DAY AS THE LOW CLOUDS ERODE ACROSS THE AREA.
1153 PM EST SUN NOV 8 2015 HIGH PRESSURE OVER THE OHIO VALLEY WILL MOVE OFF THE MID ATLANTIC COAST ON MONDAY. WEAK LOW PRESSURE IS EXPECTED TO DEVELOP OVER SOUTHEAST OHIO MONDAY NIGHT. THE LOW WILL MERGE WITH LOW PRESSURE ALONG THE EAST COAST ON TUESDAY.
1259 AM EST MON NOV 9 2015 HIGH PRESSURE OVERHEAD TONIGHT WILL DRIFT TO THE SOUTHERN NEW ENGLAND COAST BY MONDAY AFTERNOON.
319 AM EST MON NOV 9 2015 WV IMAGERY AND RAP ANALYSIS INDICATED A BROAD MID/UPPER LEVEL RIDGE FROM THE NRN PLAINS INTO THE GREAT LAKES. BREEZY SW WINDS PREVAILED FROM THE UPPER MS VALLEY INTO THE WRN LAKES BETWEEN HIGH PRES OVER OH/PA AND A TROUGH INTO THE WRN PLAINS. ONE OF THE BIGGER CHANGES SINCE LAST NIGHT IS THAT MODELS NOW SHOW THE LOW FILLING AFTER IT MOVE E OF THE U. DID KNOCK WINDS DOWN SOME GIVEN TREND IN GUIDANCE OF THE LOW FILLING AS IT MOVES E. SRLY WINDS AOB 20 KNOTS MON INTO WED WILL INCREASE WITH E GALES POSSIBLE BY WED NIGHT AHEAD OF A STRONG LOW PRESSURE SYSTEM LIFTING INTO THE WRN GREAT LAKES. AS THE LOW LIFTS NE OF THE UPPER GREAT LAKES.
326 AM CST MON NOV 9 2015 A weak upper low, embedded within the southern branch of the upper jet, was located over extreme southeast KS this morning and will lift northeast across the mid MS river valley today. A more amplified upper level trough will dig east-southeast into the western US today and tonight. Through tonight, the split upper flow across the western US will phase together as the upper level trough moves into the western US. A down stream upper level ridge will begin to amplify across the plains and upper midwest Tonight. Increasing southwesterly mid level flow across the central Rockies will cause a lee trough to deepen across the highs plains through Tonight.
COOLER DAY TUESDAY IN THE WAKE OF A COLD FRONTAL PASSAGE AND WITH INCREASED CLOUD COVER.
SHOULD STAY CLOUDY ALL DAY AND COOL AND VERY STABLE SETUP IN THE LOWER TROPOSPHERE.
353 AM CST MON NOV 9 2015 Some of the colder valleys have again dipped to near or just below freezing early this morning, but an increase in mid level cloudiness has helped hinder more widespread frost or freezing conditions.
OTHERWISE WINDS HAVE DECREASED ACROSS THE AREA AND SHOULD REMAIN ON THE LOW SIDE TOMORROW. /ISSUED 816 PM CST SUN NOV 8 2015/ HIGH PRESSURE WILL BRING A RATHER COOL NIGHT ACROSS SE TEXAS. WILL CONTINUE TO RIDGE INTO SE TX TONIGHT.
LOWS WILL STILL BE ABOVE NORMAL IN THE LOW 70S FOR MUCH OF THE REGION. HIGH PRESSURE FROM THE CENTRAL GULF TO GREAT LAKES WILL BUILD TOWARD THE ATLC COAST BRINGING TEMPORARILY STABLE AND COOLER CONDS TO THE AREA WITH NO RAIN CHC AND LIGHT ENVIRONMENTAL FLOW. LATE WEEK FEATURES PSG OF A DRY COOL FRONT TO BE FOLLOWED BY A BROAD CONTINENTAL HIGH PRESSURE AREA ENCOMPASSING MOST OF THE SRN STATES E OF THE ROCKIES SLIDING EWD.
UPPER LOW ACROSS THE PLAINS EXPECTED TO WORK EAST AND BOTH OF THESE ESPECIALLY OVERNIGHT. TEMPERATURES WERE IN THE LOWER 60S. THE SURFACE MAP SHOWED DRY HIGH PRESSURE CENTERED OVER THE UPPER OHIO VALLEY. A LOW PRESSURE CENTER WAS LOCATED ALONG THE GULF COAST WITH A WEAK INVERTED TROUGH EXTENDING UP TOWARD TN. AN UPPER LEVEL LOW PRESSURE SYSTEM FROM OK/TX WILL MOVE ENE TO THE OHIO VALLEY. HIGH PRESSURE WILL RETURN LATE MONDAY NIGHT THROUGH TUESDAY WITH DRY WX.
/ISSUED 414 PM CST SUN NOV 8 2015/ UPPER RIDGE WILL BUILD IN ACROSS THE PANHANDLES THROUGH MONDAY BEFORE EXITING EAST OF THE FORECAST AREA MONDAY NIGHT AND TUESDAY. UPPER FLOW WILL TRANSITION TO SOUTHWESTERLY BY TUESDAY AS AN UPPER TROUGH/UPPER LOW APPROACHES FROM THE WEST.
HIGH PRESSURE OVERHEAD WILL ALLOW FOR MOSTLY CLEAR SKIES AND DRY WEATHER FOR THE FIRST PART OF THE TAF PERIOD BEFORE CLOUDS AND MOISTURE BUILD INTO THE REGION FROM THE SOUTH MONDAY MORNING.
1243 AM EST MON NOV 9 2015 A COLD FRONT WILL REMAIN WELL SOUTH OF THE AREA OVERNIGHT AS HIGH PRESSURE RIDGES IN FROM THE NORTH. CURRENT READINGS THIS EVENING RANGE FROM THE MIDDLE 40S ACROSS THE WRN MIDLANDS TO THE LOWER 50S ACROSS THE SRN MIDLANDS/SRN CSRA. MODELS INDICATE WEAK LOW PRESSURE DEVELOPING IN THE NORTHERN GULF OF MEXICO TO LIFT NORTHEAST WHILE HIGH PRESSURE RIDGES INTO THE CAROLINAS AND GEORGIA FROM THE NORTH. WEDGE IS FORECAST TO ERODE MONDAY NIGHT AS LOW PRESSURE MOVES NORTHEAST OF THE AREA. HIGH RANGING FROM THE LOWER 50S WEST TO LOWER 60S EAST ON MONDAY THEN EXPECTED TO MODERATE INTO THE UPPER 60S AND LOWER 70S FOR TUESDAY.
1242 AM EST MON NOV 9 2015 AFTER HIGH PRESSURE BRINGS ANOTHER DRY AND SEASONABLE DAY TO THE NORTHEAST TODAY, A CYCLONE MOVING UP THE EAST COAST WILL SPREAD RAIN ACROSS NY AND PA TUESDAY AND TUESDAY NIGHT. A MAINLY CLEAR AND COLD NIGHT IS FORECAST TONIGHT, TO BE FOLLOWED BY A HIGH PRESSURE- DRIVEN SUNNY DAY ON MONDAY. AS A SURFACE CYCLONE MOVES UP THROUGH THE MID-ATLANTIC EARLY TUESDAY, A STRONG UL WAVE WILL DROP INTO THE NORTHEASTERN U.
ONLY AREAS WITH ANY PRESENT ACTIVE WEATHER ARE THE OVERCAST SKIES AND LIGHT RAIN/SNOW SHOWERS ALONG THE NORTHERN ROCKY MTN FRONT AND DENSE FREEZING FOG IN WEST YELLOWSTONE. SURFACE COLD FRONT THAT WILL BRING THE CANADIAN AIRMASS CONTRIBUTING TO OUR SNOW ON MON-TUES WENT THROUGH CALGARY AROUND 4PM AND IS CURRENTLY JUST NORTH OF LETHBRIDGE. WHILE A CANADIAN COLD FRONT IS NORTH OF CALGARY AT 2 PM. THIS COLD FRONT WILL MOVE SLOWLY SOUTHWARD TONIGHT AND MONDAY AND SHOULD MOVE INTO THE CUT BANK AREA AROUND 5 AM AND INTO THE GREAT FALLS AREA AFTER 8 AM MON. THE COLD FRONT WILL CONTINUE TO MOVE SOUTHWARD THROUGH SOUTHWEST MT BY MID AFTERNOON. WITH ISOLATED HIGHER AMOUNTS MAINLY AT RIDGE TOPS. MIDNIGHT SHIFT WILL LOOK SLIGHTLY CLOSER AT THE START TIME FOR THE HIGHLIGHT.
221 AM EST MON NOV 9 2015 HIGH PRESSURE OVERHEAD TONIGHT WILL DRIFT TO THE SOUTHERN NEW ENGLAND COAST BY MONDAY AFTERNOON.
426 AM EST MON NOV 9 2015 HIGH PRESSURE WILL BRING ANOTHER SUNNY AND SEASONABLE DAY TO THE REGION. A LOW PRESSURE SYSTEM MOVING UP THE EAST COAST WILL SPREAD RAIN OVER THE AREA TUESDAY AND TUESDAY NIGHT.
304 AM EST MON NOV 9 2015 AFTER HIGH PRESSURE BRINGS ANOTHER DRY AND SEASONABLE DAY TO THE NORTHEAST TODAY, A CYCLONE MOVING UP THE EAST COAST WILL SPREAD RAIN ACROSS NY AND PA TUESDAY AND TUESDAY NIGHT. A MAINLY CLEAR AND COLD NIGHT IS FORECAST TONIGHT, TO BE FOLLOWED BY A HIGH PRESSURE- DRIVEN SUNNY DAY ON MONDAY. AS A SURFACE CYCLONE MOVES UP THROUGH THE MID-ATLANTIC EARLY TUESDAY, A STRONG UL WAVE WILL DROP INTO THE NORTHEASTERN U.
TEMPS IN THE LOW- MID 50S AT THIS TIME. THE LOWER CLOUDS ARE EXPECTED TO SHIFT EASTWARD BY BETWEEN THE 23Z-01Z TIME FRAME.
Broad upper low now centered over southeast KS. This precip should come to an end Monday night, as the upper low accelerates northeastward and passes Indiana by daybreak Tuesday.
WV Imagery indicates a weak upper level ridge of high pressure transitioning eastward across the Central Plains. Meanwhile, an upper level trough of low pressure is digging southeast across the Pacific Northwest and northern California. Near the surface, a lee side trough of low pressure is anchored across extreme eastern Colorado. This will lead to south winds and mild temperatures trough Monday. Highs Monday should reach into the lower to mid 60s. Even warmer temperatures can be expected Tuesday as surface pressures fall in the lee of the Rockies, along with south winds.
327 AM CST MON NOV 9 2015 Temperatures early this morning fell into the middle 30s in most locations as high pressure was observed over much of the nation's midsection. These southerly breezes will keep temperatures warmer tonight, with lows only in the upper 30s to lower 40s.
100 AM EST MON NOV 9 2015 HIGH PRESSURE OVERHEAD TONIGHT WILL DRIFT TO THE SOUTHERN NEW ENGLAND COAST BY MONDAY AFTERNOON.
LOW PRESSURE WILL BRING SHOWERS LATE MONDAY INTO TUESDAY. CLOUD COVERAGE WILL INCREASE ON MONDAY AHEAD OF AN APPROACHING LOW PRESSURE SYSTEM. GFS AND ECMWF IN GOOD AGREEMENT ON MID LEVEL CLOSED LOW MOVING EAST INTO THE OHIO VALLEY MONDAY NIGHT AND BECOMING NEGATIVE TILT BY TUESDAY MORNING.
HIGH PRESSURE WILL BUILD NORTH THEN NORTHEAST OF THE REGION THIS WEEK.
TEMPERATURES WILL BEGIN TO MODERATE LATER IN THE WEEK AS HIGH PRESSURE BUILDS EASTWARD.
647 AM EST MON JAN 4 2016 AVIATION LAKE EFFECT SNOW SHOWERS WILL LINGER THIS MORNING BEFORE TAPERING OFF AS HIGH PRESSURE BUILDS IN TODAY. FAIR WX IS ANTICIPATED LATER TODAY AS HIGH PRESSURE BUILDS IN. SOUTHERLY RETURN FLOW ON THE BACK SIDE OF THE DEPARTING RIDGE WILL RESULT IN A MODERATING TREND FOR TEMPS FOR MIDWEEK.
935 AM EST MON JAN 4 2016 HIGH PRESSURE WILL CROSS THE REGION LATER TODAY THROUGH TUESDAY.
602 AM EST MON JAN 4 2016 HIGH PRESSURE WILL CROSS THE REGION LATER TODAY THROUGH TUESDAY.
857 AM EST MON JAN 4 2016 A TROUGH WILL BE PRESSING SOUTHWEST ACROSS THE AREA THIS MORNING. HIGH PRESSURE WILL BUILD SOUTH ACROSS THE GREAT LAKES LATE TODAY.
THIS IS ALL COURTESY OF A COLD FRONT WHICH IS IN SOUTHERN TN. THUS THE LOW CLOUDS. THE LOW CLOUDS SHOULD DISSIPATE LATER THIS AFTERNOON WITH GENERALLY CLEAR SKIES FORECAST FOR THE NIGHT-TIME.
THESE STORM SYSTEMS WILL BRING COOLER AFTERNOON HIGHS AND MILD NIGHTS THROUGHOUT THE WEEK. FIRST UPPER TROUGH OF THIS WEEKS WEATHER SYSTEMS IS MOVING OVER SOUTHERN CALIFORNIA AND INTO ARIZONA THIS MORNING. THE TROUGH AXIS IS NEAR SHORE AND THERE ARE A COUPLE OF DISTINCT VORT MAXES WITHIN THE TROUGH. AS THE TROUGH AXIS MOVES INLAND. QPF VALUES OF TWO TO THREE TENTHS OF AN INCH WILL BE COMMON ON THE LOWER DESERTS. MAINLY EAST OF THE LOWER COLORADO RIVER VALLEY.
508 AM EST MON JAN 4 2016 HIGH PRESSURE WILL CROSS THE REGION LATER TODAY THROUGH TUESDAY.
THE HIGH PRESSURE AND ITS GRADIENT WERE ALREADY HITTING NORTHERN AREAS. THESE CLOUDS AND COLD AIR ADVECTION WILL HOLD THE HIGHS DOWN MAINLY IN THE 40S THIS AFTERNOON.
517 AM CST MON JAN 4 2016 High pressure over the northern Plains will build into the Great Lakes area today causing subsidence aloft to help clear out some of the widespread cloud cover over the region. near or slightly cooler than yesterday with highs from around 30 to 35. Winds will start the day with a light NW breeze 10-15 mph then decrease to N 5-10 mph as the approaching high pressure center brings a weaker pressure gradient across the area. Southwesterly flow reestablishes itself in the midlevels and warmer air filters into the region. A return of the warmer temperatures will also signal some more moisture feeding into the Midwest.
HIGH TEMPERATURES TODAY WILL BE IN GENERALLY IN THE LOW TO MID 60S WITH A MIX OF CLOUDS AND SUN. LOW TEMPERATURES TONIGHT WILL RANGE FROM THE LOWER 40S ACROSS THE RANCHLANDS TO LOWER 50S ALONG THE COAST. WHICH IS BETWEEN THE WARMER ECMWF/GFS AND THE COOLER NAM GUIDANCE.
SATELLITE IMAGERY SHOWS THE FIRST SPLIT AND WEAKENING SYSTEM MOVING EVER SLOWLY ASHORE AS THE TWO LOW PRESSURE CENTERS HEAD IN DIFFERENT DIRECTIONS. THE STRONGER OF THE LOWS IS NOTED MOVING ACROSS FAR SOUTHWEST CALIFORNIA AND THE OTHER IS MOVING NORTHWARD TOWARD OREGON.
547 AM EST MON JAN 4 2016 UPPER LEVEL TROUGH AND LOW LEVEL COLD ADVECTION BRINGS SNOW SHOWERS TODAY.
408 AM MST MON JAN 4 2016 FREEZING FOG HAS YET TO DEVELOP AS ADVERTISED.
A WEAK UPPER TROUGH IS MOVING THROUGH THE FORECST AREA THIS MORNING. MORNING TEMPERATURES IN SOME WEST SIDE VALLEYS WILL BE NEAR FREEZING AS THE FIRST AREAS OF LIGHT RAIN ARRIVE. HAVE ADDED A SLIGHT CHANCE OF FREEZING RAIN FOR THE KLAMATH RIVER. BUT THERE IS STILL A CHACNE FOR SOME LIGHT FREEZING RAIN.
408 AM MST MON JAN 4 2016 H5 ANALYSIS TONIGHT SHOWS THE PAIR OF LOW PRESSURE CENTERS OUT WEST HAVE BEEN ROTATING COUNTER-CLOCKWISE AROUND EACH OTHER THE PAST 24 HOURS. WITH THIS SYSTEM ON THE WEAK SIDE AND NO APPARENT COLD FRONT PUSHING THROUGH CONFIDENCE IS NOT HIGH. WED MORNING THE SECOND TROUGH SHOULD BE SPREADING PRECIP OVER THE AREA. THIS TROUGH SHOULD BRING MORE PRECIP FURTHER NORTH AND ACROSS THE ENTIRE CWA WED NIGHT. THE GFS AND ECMWF HAVE THIS TROUGH SPLITTING AS IT MOVES THROUGH WHICH TAKES SOME OF ITS ENERGY SOUTHEAST OF THE FORECAST AREA.
/ISSUED 400 AM CST MON JAN 4 2016/ UPPER LEVEL RIDGING IS CURRENTLY IN PLACE OVER NORTH TEXAS AND WILL RESULT IN SUNNY SKIES AND A DRY FORECAST TODAY AND TUESDAY. TEMPERATURES WILL BE SLIGHTLY BELOW NORMAL AS WELL WITH THE WEAK NORTH WINDS HELPING TO REINFORCE THE COOLER AIR.
DRY WITH HIGH PRES RIDGING SOUTH INTO THE REGION THROUGH TONIGHT RESULTING IN N-NE WINDS AROUND 10 KT OR LESS. /ISSUED 404 AM CST MON JAN 4 2016/ STARTING OFF THE FORECAST PERIOD WITH A COLD HIGH PRESSURE SYSTEM THAT WILL BRING THE POSSIBILITY OF A LIGHT FREEZE AND FROST TO PORTIONS OF THE FORECAST AREA. THIS HIGH PRESSURE SYSTEM WILL MOVE OFF TO THE EAST BY MID WEEK.
1024 AM EST MON JAN 4 2016 AN UPPER LEVEL TROUGH WILL CROSS THE REGION FROM THE WEST TODAY.
643 AM EST MON JAN 4 2016 A RE-ENFORCING COLD FRONT WILL MOVE THROUGH THE REGION TONIGHT.
VFR CONDITIONS WILL PREVAIL ACROSS DEEP SOUTH TEXAS FOR THE NEXT 24 HOURS UNDER WEAK HIGH PRESSURE. HIGH TEMPERATURES TODAY WILL BE IN GENERALLY IN THE LOW TO MID 60S WITH A MIX OF CLOUDS AND SUN. LOW TEMPERATURES TONIGHT WILL RANGE FROM THE LOWER 40S ACROSS THE RANCHLANDS TO LOWER 50S ALONG THE COAST. WHICH IS BETWEEN THE WARMER ECMWF/GFS AND THE COOLER NAM GUIDANCE.
404 AM CST MON JAN 4 2016 STARTING OFF THE FORECAST PERIOD WITH A COLD HIGH PRESSURE SYSTEM THAT WILL BRING THE POSSIBILITY OF A LIGHT FREEZE AND FROST TO PORTIONS OF THE FORECAST AREA. THIS HIGH PRESSURE SYSTEM WILL MOVE OFF TO THE EAST BY MID WEEK.
/ISSUED 311 AM CST MON JAN 4 2016/ High pressure will prevail at the surface and aloft today resulting into slightly cooler temperatures across the area this afternoon.
FOR TODAY A PASSING UPPER RIDGE WILL KEEP CLOUDY BUT DRY CONDITIONS OVER THE REGION. HIGH PRESSURE ALONG THE DIVIDE WILL CONTINUE TO DRIVE AN EASTERLY WIND THROUGH THE SNAKE RIVER PLAIN. ELEVATIONS ABOVE ABOUT 2500 FEET WILL GET INTO THE WIND AND LIKELY SEE TEMPERATURES TOP FREEZING THIS AFTERNOON. A WEAK UPPER TROUGH TRACKS ACROSS SE OREGON AND SW IDAHO OVERNIGHT. HOWEVER FOR SITES IN THE LOWER SNAKE RIVER PLAIN /BELOW ABOUT 3K FEET/ A WARM LAYER JUST OFF THE SURFACE COULD BE DEEP ENOUGH TO MELT THE SNOW. ALLOWING FOR LIGHT FREEZING RAIN. A BRIEF BREAK TUESDAY WILL GIVE WAY TO ANOTHER ROUND OF LIGHT PRECIP AS A ANOTHER UPPER TROUGH APPROACHES THE AREA.
A COLD FRONT IS DRAPED FROM THE NORTHWEST BAHAMAS TO ALONG THE NORTH COAST OF CUBA. WHILE A LARGE CONTINENTAL REGION OF HIGH PRESSURE IS CENTERED OVER THE NATIONS MIDSECTION WITH A RIDGE REACHING ACROSS THE ENTIRE GULF OF MEXICO. WITH THE SURFACE AND LOW LEVEL TROUGH NOW MIGRATING FURTHER AWAY FROM OUR REGION. A LAGGING MID AND UPPER LEVEL TROUGH WILL TRACK EASTWARD AND THROUGH OUR ENTIRE COUNTY WARNING AREA BY MID AFTERNOON. ONLY SPRINKLES ARE POSSIBLE WITH THE PASSAGE OF THE LATTER TROUGH.
618 AM EST MON JAN 4 2016 MAIN STORY IN THE SHORT TERM IS THE STRONG COLD AIR ADVECTION PATTERN THAT IS CURRENTLY UNDERWAY AS A COLD DOME OF HIGH PRESSURE SETTLES OVER THE MID AND UPPER MS VALLEY REGION TODAY.
AS DRIER AIR GRADUALLY MIXES DOWN INTO THE LOWER LEVELS. WITH MORNING LOWS TUE FALLING INTO THE LOWER/MID 20S FOR MOST LOCATIONS. WEAK UPPER RIDGING ALSO LOOKS TO QUICKLY MOVE EWD ACROSS THE REGION. THE LATTER HALF OF THE GLOBAL MODELS ARE POINTING TO A COUPLE OF LOW PRESSURE SYSTEMS DEVELOPING FROM THE MID PLAINS INTO THE WRN GULF WED INTO THU. WITH SHOWERS FORMING ALONG/AHEAD OF THE ASSOCIATED COLD FRONTS. THE LOW CLOUDS SHOULD DISSIPATE LATER THIS AFTERNOON WITH GENERALLY CLEAR SKIES FORECAST FOR THE NIGHT-TIME.
AS DRIER AIR GRADUALLY MIXES DOWN INTO THE LOWER LEVELS. WITH MORNING LOWS TUE FALLING INTO THE LOWER/MID 20S FOR MOST LOCATIONS. WEAK UPPER RIDGING ALSO LOOKS TO QUICKLY MOVE EWD ACROSS THE REGION. THE LATTER HALF OF THE GLOBAL MODELS ARE POINTING TO A COUPLE OF LOW PRESSURE SYSTEMS DEVELOPING FROM THE MID PLAINS INTO THE WRN GULF WED INTO THU. WITH SHOWERS FORMING ALONG/AHEAD OF THE ASSOCIATED COLD FRONTS.
MAINLY IN THE LOWER TO MIDDLE 20S. CONCEDE THAT CERTAINLY EVEN LESSER AMOUNTS OUTSIDE OF ADVISORY MAY CAUSE WRECKS/TRAVEL DIFFICULTIES THIS AM WITH THIN ICE LAYER/MELT AND REFREEZE ON BRIDGES. SOME LES MAY LINGER INTO LATE MORNING AS TROF BECOMES INCREASING INVERTED AROUND SOUTHERN LAKE MICHIGAN PIVOT. FAIRLY TRANQUIL WEATHER THIS PERIOD IS EXPECTED AS WEAK RIDGING BUILDS OVER THE AREA LATER THIS WEEK. ENERGY FROM A BROAD DEVELOPING LONGWAVE TROF OVER THE WESTERN CONUS WILL EVENTUALLY REACH THE UPPER GREAT LAKES REGION.
947 AM EST MON JAN 4 2016 HIGH PRESSURE WILL CONTINUE ACROSS THE AREA THROUGH TONIGHT. /ISSUED 618 AM EST MON JAN 4 2016/ MAIN STORY IN THE SHORT TERM IS THE STRONG COLD AIR ADVECTION PATTERN THAT IS CURRENTLY UNDERWAY AS A COLD DOME OF HIGH PRESSURE SETTLES OVER THE MID AND UPPER MS VALLEY REGION TODAY.
Southwest flow has kept some mountain locations above freezing most of the night, meanwhile cold air remains trapped in area valleys with many locations in the single digits this morning. Fortunately no significant precipitation is expected today in these warmer areas, so we don't need to worry about freezing rain, until tomorrow. The biggest concern is the possibility for freezing rain in portions of the Bitterroot valley and along the lower Clark Fork river in central western Montana tomorrow night. However, travelers should stay alert for the possibility of freezing rain in these areas.
A NEGATIVELY TILTED TROUGH AXIS EXTENDED FROM WEST OF THE NRN CALIFORNIA COAST NEAR 40N/130W SEWD INTO CENTRAL BAJA CALIFORNIA. HIGH TEMPS TODAY WILL BE ABOUT 5-15 DEGS COOLER VERSUS MON. SLIGHTLY WARMER TEMPS WILL OCCUR FOR MOST LOCALES TUE.
DESPITE THE WARM TEMPS INLAND AND THE LOW LEVEL CONVERGENCE ALONG THE SEABREEZE.
612 AM EDT SAT MAY 9 2015 LOW PRESSURE OVER MICHIGAN WILL MOVE INTO NEW ENGLAND SUNDAY WITH THE TRAILING FRONT STALLING NORTH OF THE FORECAST AREA.
In the upper levels, the upper level low currently centered near northern AZ will be moving northeast into the central plains continuing to result in height falls for areas from the panhandle south into west central Texas. At the surface, the dryline will be retreating back to the northwest at the same time that a Pacific cold front is advancing eastward into west central Texas.
A COLD FRONT ACCELERATED DOWN LAKE MI AND IS AIDING IN BREAKING UP THE FOG. HIGH TEMPS WILL RANGE FROM 70F OVER SOUTH CENTRAL WI TO THE LOWER TO MID 50S OVER FAR ERN WI.
532 AM EDT SAT MAY 9 2015 THE COLD FRONT THAT MOVED ACROSS MAINE AND NEW HAMPSHIRE YESTERDAY WILL SHIFT BACK TO THE EAST AS A WARM FRONT TODAY. ANOTHER COLD FRONT WILL SETTLE SOUTH INTO NORTHERN NEW ENGLAND TONIGHT AND WILL SLOWLY SAG SOUTH ON SUNDAY.
356 AM CDT SAT MAY 9 2015 CURRENTLY TEMPERATURES ARE WARM IN THE LOW TO MID 70S WITH A SOUTHERLY WIND AND CONSIDERABLE CLOUD COVER KEEPING THE TEMPERATURES UP. THE UPPER LOW OVER THE SOUTHWEST U.
336 AM CDT SAT MAY 9 2015 IMPRESSIVE MID-LEVEL HEIGHT FALLS AHEAD OF THE STRONG UPPER LOW HAS RESULTED IN CONVECTION EARLY THIS MORNING ALONG THE DRYLINE THAT IS CURRENTLY ACROSS FAR ERN NM. EVEN MORE STORMS ARE POSSIBLE SUNDAY EVENING AND SUNDAY NIGHT AS THE PACIFIC COLD FRONT EVENTUALLY CATCHES UP TO THE DRYLINE AND PUSHES SE ACROSS THE FORECAST AREA.
350 AM EDT SAT MAY 9 2015 LOW PRESSURE OVER MICHIGAN WILL MOVE INTO NEW ENGLAND SUNDAY WITH THE TRAILING FRONT STALLING NORTH OF THE FORECAST AREA.
310 AM EDT SAT MAY 9 2015 A LARGE AREA OF HIGH PRESSURE AT THE SURFACE AND ALOFT WILL REMAIN IN CONTROL OF OUR WEATHER THROUGH THE WEEKEND. THEN IN GENERAL TURN DRIER AND COOLER THEREAFTER. LINGERING UPR-LVL TROUGHINESS INTO WED COULD PRODUCE A FEW RESIDUAL SHWRS ACRS OUR NRN ZNS.
329 AM PDT SAT MAY 9 2015 HIGH PRESSURE BUILDS INTO CALIFORNIA AND WESTERN NEVADA THIS WEEKEND FOR DRIER CONDITIONS AND MILD TEMPERATURES.
308 AM EDT SAT MAY 9 2015 THE COLD FRONT THAT MOVED ACROSS MAINE AND NEW HAMPSHIRE YESTERDAY WILL SHIFT BACK TO THE EAST AS A WARM FRONT TODAY. ANOTHER COLD FRONT WILL SETTLE SOUTH INTO NORTHERN NEW ENGLAND TONIGHT AND WILL SLOWLY SAG SOUTH ON SUNDAY.
631 AM EDT SAT MAY 9 2015 A LARGE AREA OF HIGH PRESSURE AT THE SURFACE AND ALOFT WILL REMAIN IN CONTROL OF OUR WEATHER THROUGH THE WEEKEND. THEN IN GENERAL TURN DRIER AND COOLER THEREAFTER. LINGERING UPR-LVL TROUGHINESS INTO WED COULD PRODUCE A FEW RESIDUAL SHWRS ACRS OUR NRN ZNS.
A FEW LINGERING SHOWERS THIS MORNING ALONG THE ID/NV BORDER ON THE NRN FRINGE OF UPPER LOW IN SRN UTAH. DRIER AND MORE STABLE AIR MASS LATER TODAY AS A NARROW UPPER RIDGE COMES IN FROM THE NW COAST. UPPER RIDGE AXIS WILL PASS THROUGH OUR CWA TONIGHT AND SUNDAY AS THE NEXT GULF OF ALASKA TROUGH APPROACHES THE NW COAST. WE BEGIN THE PERIOD WITH A RIDGE MOVING EAST OUT OF THE REGION.