Aikyam-Lab/Synoptic-Bench huggingface dataset:
235 PM CDT MON APR 20 2015 THE PARENT LOW PRESSURE SYSTEM THAT DRAGGED A COLD FRONT THROUGH THE REGION EARLY TODAY HAS BEEN STEADILY MOVING STRAIGHT NORTH ACROSS MICHIGAN TODAY. THIS LOW LEVEL MOISTURE IS EXPECTED TO SHIFT EAST DURING THIS EVENING. COLD AIR ADVECTION HAS BEEN ONGOING TODAY (WITH PLACES STRUGGLING TO EVEN REACH 60 DEGREES) WITH 850MB TEMPS DROPPING DOWN INTO THE LOW SINGLE DIGITS. READINGS WILL DROP INTO THE LOW 40S. WE WILL REMAIN IN CYCLONIC FLOW AS THE MAIN UPPER LEVEL LOW ROTATES ACROSS THE UPPER GREAT LAKES REGION.
THE WET PATTERN CURRENTLY ACROSS CENTRAL INDIANA WILL TRANSITION TO A COOLER DRIER PATTERN UNDER THE INFLUENCE OF A BROAD UPPER LOW THAT WILL STALL OUT OVER EASTERN CANADA BY MID WEEK. THE COLD FRONT HAS MOVED THROUGH THE AREA AS WELL AS MAJORITY OF FORCING FOR RAINFALL SO DECREASED POPS FOR THE REMAINDER OF THE DAY. ADDED IN SOME LIGHT CHANCES FOR SHOWERS/SPRINKLES ACROSS THE FAR NORTHERN COUNTIES AS MODELS ARE HINTING AT ANOTHER WEAK WAVE MOVING THROUGH THE UPPER LOW EARLY THIS EVENING AND SOME LIGHT SHOWERS COULD REACH THIS FAR SOUTH.
/ISSUED 1023 AM CDT MON APR 20 2015/ WITH HIGH PRESSURE BUILDING IN FROM THE NORTHWEST. EVEN WITH THE COOLER AND DRIER AIRMASS IN PLACE.
/ISSUED 537 AM CDT MON APR 20 2015/ NORTHWEST FLOW ALOFT WILL DOMINATE TODAY AS SURFACE RIDGING SLIDES TOWARD EASTERN TEXAS. UPPER RIDGING BUILDING ACROSS THE WESTERN CONUS WILL ALLOW FOR WARMING TEMPERATURES AS HIGHS TOP OUT IN THE UPPER 60S TO LOW 70S THIS AFTERNOON. SERVING AS A FORCING MECHANISM FOR THUNDERSTORM DEVELOPMENT ALONG THE HIGHER TERRAIN OF COLORADO/NEW MEXICO THIS AFTERNOON. AFOREMENTIONED SOUTHERLY FLOW LOOKS TO KEEP OVERNIGHT LOWS RIGHT AROUND NORMAL IN THE 40S ON THE CAPROCK AND UPPER 40S TO NEAR 50 IN THE LOWER ROLLING PLAINS.
LOW LEVEL MOISTURE WAS SHUNTED SOUTH OF THE LOWER MISSISSIPPI VALLEY AREA WELL OFF THE COAST AND WILL BE SLOW TO RETURN TO THE GREAT PLAINS. THERE MAY BE A SUBTLE COLD FRONT PROVIDING A FOCUS BY AFTERNOON WHERE A FEW VIGOROUS UPDRAFTS WILL BE POSSIBLE.
LOOKS LIKE ENOUGH INSTABILITY IN THE THETA E RIDGE ACROSS OUR FAR SOUTHWEST COUNTIES FOR ISOLATED TO WIDELY SCATTERED EARLY EVENING SHOWERS OVER SOUTHERN CARBON AND ALBANY COUNTIES.
TEMPERATURES WILL HOLD IN THE LOW TO MID 30S. MIXING UP TO 800 MB TUESDAY ONLY YIELDS HIGHS IN THE LOW 40S. AS THE UPPER TROUGH OVER THE CENTRAL/EASTERN PART OF THE CONTINENT SLIDES EAST AND EVENTUALLY GIVES WAY TO WESTERLY/ZONAL FLOW BY THE WEEKEND.
314 PM CDT MON APR 20 2015 AN UPPER LEVEL SHORT WAVE TROUGH MOVING OVER WY AND CO THIS AFTERNOON WILL HELP SUPPORT THE E/SE MOVEMENT OF SCATTERED SHOWERS AND THUNDER OFF OF THE HIGH TERRAIN THIS EVENING. WEAK UPPER LEVEL RIDGING WILL MOVE EWD ACROSS NEW MEXICO TUESDAY WITH THE DRYLINE SETTING UP ACROSS THE WRN SOUTH PLAINS/WRN PANHANDLE AND LIKELY NOT MAKING MUCH IN THE WAY OF INROADS EWD. WHILE LIFT WILL BE HARD TO COME BY WITH RIDGING ALOFT.
TEMPERATURES THIS AFTERNOON WERE ONLY IN THE MIDDLE 40S TO THE LOWER 50S. COOL/CYCLONIC FLOW WILL PRODUCE BELOW NORMAL TEMPERATURES ONCE AGAIN WITH HIGHS RANGING FROM THE LOWER 50S ACROSS THE NORTH. NAM/GFS MODELS CONTINUE TO SHOW A MID-LEVEL TROUGH DROPPING ACROSS THE AREA DURING THE EVENING FOR A CHANCE OF SHOWERS.
1214 PM CDT MON APR 20 2015 MOSTLY SUNNY SKIES THIS MORNING WILL ALLOW FOR TEMPERATURES TO CLIMB INTO THE LOWER TO MIDDLE 50S BY MID AFTERNOON. HIGH PRESSURE IS EXPECTED TO SETTLE ACROSS THE HEART OF THE LOCAL AREA LATER THIS EVENING AND OVERNIGHT. COULD SEE SOME NEAR OR BELOW FREEZING TEMPERATURES TO START THE DAY ON TUESDAY. TUE-THU NW FLOW WITH GRADUALLY RISING HEIGHTS AND A RIDGE MOVING THRU THU NIGHT. SPREAD THEN INCREASES SAT-SUN IN WHAT THE MODELS DO WITH THE DEPARTING TROF. ADDITIONAL UNCERTAINTY ALSO DEVELOPS WITH THE NEXT TROF MOVING IN OFF THE PAC. THIS HIGH SHIFTS E OF THE REGION THU. THIS DOES MAKE SENSE IN THE WAKE OF THE DEPARTING TROF.
Showers will dissipate early this evening and gusty winds will relax to around 5-10 mph for the overnight as today's cold front pulls away. Under partly cloudy skies temperatures will fall into the lower 40s. Scattered showers and an isolated thunderstorm will be possible once again by Tuesday afternoon with some weak instability, increasing moisture, and upper troffing. High temperatures will be in the lower and middle 60s. Scattered showers will remain in the forecast Tuesday night as a cold front approaches from the northwest.
344 PM CDT Mon Apr 20 2015 High pressure extended from Montana southeast into Oklahoma at 20Z. The low level jet veers later tonight into Tuesday morning across southern Kansas into southern Missouri with moisture axis extending east-west.
A COLD FRONT WILL TRACK EAST ACROSS THE REGION TONIGHT. HIGH PRESSURE WILL BUILD IN FROM THE SOUTHWEST LATE TONIGHT THROUGH TUESDAY.
315 PM CDT MON APR 20 2015 LARGE UPPER LEVEL TROUGH IS NOW IN PLACE WITH BACKSIDE ENERGY HELPING TO PROMOTE THE CONTINUATION OF SHOWER ACTIVITY. TROUGH IS PROGRESSIVE WITH ITS EASTWARD MOVEMENT SO WILL CONTINUE WITH SOME LOW SHOWER CHANCES FOR THIS EVENING ONLY. IT WILL BE A RATHER COOL OVERNIGHT AS TEMPS DROP INTO THE LOWER 40S FOR MANY AREAS. A WEAK COLD FRONT WILL BE ON APPROACH BY TUESDAY NIGHT.
THE UPPER LEVEL RIDGE OFF TO THE WEST IS ALSO MOVING EASTWARD AND BRINGING A VORT LOBE THROUGH THE AREA. TONIGHT SHOULD BE WARMER THAN LAST NIGHT DUE TO INCREASED CLOUD COVER AND THE SOUTHERLY FLOW CREATING LOWS IN THE UPPER 30S TO MID 40S OVERNIGHT. LATER IN THE DAY WEAK HEIGHT FALLS OCCUR JUST TO OUR WEST AS CLOSED LOW IN THE SOUTHWEST CONUS DEEPENS.
351 PM CDT MON APR 20 2015 LATEST SURFACE ANALYSIS PLACES A COLD FRONT FROM THE MICHIGAN THUMB. TEMPERATURES ACROSS THE MID-SOUTH ARE QUITE COOL THIS AFTERNOON WITH READINGS IN THE LOW TO MID 60S AREAWIDE UNDER PARTLY SUNNY SKIES. WINDS ARE STILL RELATIVELY STRONG WITH SUSTAINED 10 TO 15 MPH GUSTING TO AROUND 20 MPH MAKING CONDITIONS FEEL EVEN COOLER.
CLOSED LOW UNDER RIDGE OFF THE WEST COAST. SO MOST IF NOT ALL AREAS WILL FALL NEAR OR BELOW FREEZING BY TUESDAY MORNING DUE TO THE DRY AIR AND LIGHT WINDS. A COLD FRONT WILL BACK INTO THE AREA TUESDAY AFTERNOON.
1250 PM CDT MON APR 20 2015 HIGH PRESSURE IS BUILDING INTO THE AREA FROM THE WEST.
328 PM CDT MON APR 20 2015 THE CLOSED UPPER LOW WAS MEANDERING AROUND NW MN AT 19Z WITH EMBEDDED PIECES OF SHORT WAVE ENERGY ROTATING THROUGH THE FORECAST AREA. EXPECT MORE PIECES OF SHORT WAVE ENERGY TO MOVE THROUGH THE FORECAST AREA AS THE UPPER LOW TRAVELS TO THE WESTERN EDGE OF UPPER MI.
346 PM EDT MON APR 20 2015 A COLD FRONT WILL CROSS THE REGION OVERNIGHT BRINGING A ROUND OF SHOWERS AND THUNDERSTORMS BEGINNING LATE THIS AFTERNOON AND CONTINUING THROUGH MIDNIGHT. SHOWERS AND THUNDERSTORMS ARE MOVING INTO WESTERN NYS ATTM AS THE UPPER LEVEL TROF BEGINS MOVING INTO THE REGION.
THE COLD FRONT CAUSING ALL THIS TROUBLE WILL MOVE THROUGH THE REMAINDER OF THE CWFA BY THE MID TO LATE EVENING. HIGH PRESSURE AND A DRIER AIRMASS WILL SETTLE OVER THE CWFA.
THE COLD FRONT RESPONSIBLE FOR THIS ACTIVITY CURRENTLY BISECTS NW AL AND EXTENDS FROM THE ERN GREAT LAKES DOWN INTO SRN MS/LA AND BACK INTO THE WRN GOMEX. WHILE THE STRONG/SEVERE CONVECTION ASSOCIATED WITH THIS BOUNDARY HAS SINCE PUSHED WELL EAST OF THE HUN CWFA, ANOTHER ROUND OF CLOUDS IS TRAVERSING THE AREA RIGHT ALONG THE COLD FRONT ATTM. DEWPOINTS IN THE WAKE OF THE COLD FRONT ARE ALREADY DOWN INTO THE MIDDLE 40S IN MEMPHIS, WITH MIDDLE 30S BEING REPORTED BACK IN CENTRAL AR. CURRENT TEMPS IN THE LOWER/MIDDLE 60S SHOULD ONLY RISE A FEW MORE DEGREES WITH LIMITED INSOLATION EXPECTED, SO AFTN HIGHS WERE ADJUSTED DOWNWARD A FEW DEGREES.
TEMPS ARE FORECAST TO DROP INTO THE LOWER TO MID 30S. AND IN SOME CASES BELOW FREEZING IN NORTHEAST NEBRASKA. WITH MODELS SHOWING LARGE SCALE PATTERN ALTERING TO TWO UPPER LEVEL LOWS.
1031 AM PDT MON APR 20 2015 High pressure will allow for warm and above average temperatures over Eastern Washington and Northern Idaho through Tuesday.
WARM MID LEVEL TEMPERATURES DUE TO WEAK UPPER LEVEL RIDGING WILL INHIBIT DEEPER CONVECTION. STEERING VECTORS INDICATE THEY SHOULD STAY NEAR THE HIGHER TERRAIN OF THE BURROS KEEPING THEM WEST OF THE RIO GRANDE WITH NO IMPACT TO SOUTH CENTRAL TEXAS. SIGNIFICANTLY HIGHER DEWPOINTS BRING A WARMER MORE HUMID AIRMASS TUESDAY NIGHT.
WINDY CONDITIONS WILL BE THE HIGHLIGHT FOR TUESDAY AS UPPER AND LOWER LEVEL JETS INTENSIFY ACROSS IL. THE UPPER TROUGH WILL REMAIN ENTRENCHED ACROSS THE GREAT LAKES FOR THE REST OF THE WEEK, PROVIDING SUSTAINED NW FLOW AND COOLER THAN NORMAL CONDITIONS.
344 PM CDT MON APR 20 2015 AN AREA OF HIGH PRESSURE AT THE SURFACE HAS BROUGHT A PLEASANT DAY ACROSS SOUTHEAST TEXAS.
TONIGHT AND TUESDAY AFTER PRECIPITATION PULLS AWAY THIS EVENING AS LOW PRESSURE IN LOWER MICHIGAN IS KICKED EAST. CLOUDS AND POPS WILL INCREASE AGAIN LATE TONIGHT AND TUESDAY AS THE MAIN UPPER LEVEL TROUGH SETTLES OVER THE REGION. THOUGH A DIMINISHING TREND IS POSSIBLE TUESDAY AFTERNOON AS THE UPPER LEVEL CLOSED LOW SHIFTS OVERHEAD AND FORCING WILL BE VERY WEAK. GROUND IS WARMER FROM THE PAST WEEK OF SPRING LIKE WEATHER AND NO ACCUMULATION WAS REPORTED THROUGH OUT MUCH OF CENTRAL WISCONSIN. TUESDAY NIGHT THROUGH MONDAY AN UPPER LOW MOVING SLOWLY FROM THE NORTHERN GREAT LAKES TOWARDS QUEBEC WILL PRODUCE A NORTHWEST FLOW OF COOL AIR FOR THE REST OF THE WEEK.
AN UPPER TROUGH AND COLD FRONT WILL REACH WESTERN WASHINGTON BY TUESDAY NIGHT.
A COLD FRONT OVER WESTERN FLORIDA PANHANDLE WILL ALSO CONTINUE TO MOVE SOUTHEAST TONIGHT AND SHOULD BE OVER THE LAKE OKEECHOBEE REGION ON TUESDAY.
344 PM EDT MON APR 20 2015 A COLD FRONT WILL CROSS THE REGION OVERNIGHT BRINGING A ROUND OF SHOWERS AND THUNDERSTORMS BEGINNING LATE THIS AFTERNOON AND CONTINUING THROUGH MIDNIGHT. SHOWERS AND THUNDERSTORMS ARE MOVING INTO WESTERN NYS ATTM AS THE UPPER LEVEL TROF BEGINS MOVING INTO THE REGION.
152 PM EDT MON APR 20 2015 A COLD FRONT WILL MOVE EAST THROUGH THE GREAT LAKES AND OHIO VALLEY TODAY. BREEZY TO WINDY CONDITIONS ARE EXPECTED ON TUESDAY AHEAD OF A WEAK COLD FRONT.
WITH COOLER TEMPERATURES AND BREEZY NORTHWEST WINDS.
As a result gusty winds have occurred today as the pressure gradient was tight between the low and high. Winds will weaken tonight but will not go claim as the high remains south of the area. An upper level low located across northern Minnesota this afternoon will push east into the Great Lakes region on Tuesday. Energy from the low will spread southeast into the region Tuesday afternoon and evening, sparking off scattered thunderstorms.
FOR MORNING UPDATE HAVE ADJUSTED THE WESTERN EDGE OF THE LOW CLOUD COVER OVER CENTRAL NORTH DAKOTA AND HAVE PULLED IT TO THE WEST A BIT IN LINE WITH LATEST SATELLITE IMAGERY. UPPER LEVEL LOW SLIDING SLOWLY SOUTHEAST INTO THE WESTERN GREAT LAKES REGION. UPPER LOW SLIDES OVER THE NORTHERN GREAT LAKES ON TUESDAY AS RIDGE MOVES OVER THE ROCKIES.
A HIGH PRESSURE RIDGE WILL BE OVER OVER THE WEST COAST THIS MORNING AND SLOWLY MOVE EAST DURING THE DAY. AN UPPER LEVEL HIGH PRESSURE RIDGE IS OVER THE WEST COAST AND MODERATE NORTHWEST FLOW ALOFT IS OVER CENTRAL MONTANA.
LARGE UPPER TROUGH OVER THE WESTERN GREAT LAKES CONTINUES TO DEEPEN. MODELS SUGGESTING A SPOKE OF ENERGY ROTATING AROUND THE UPPER TROUGH. BRINGING A WEAK BACKDOOR COLD FRONT THROUGH THE AREA EARLY IN THE DAY. AND THE SUB-FREEZING TEMPERATURES AT NIGHT.
251 PM CDT MON APR 20 2015 COLD FRONT IS NOW NEAR THE INTERSTATE 85 CORRIDOR. WE DID HAVE SOME STORMS IN OUR FAR SOUTHEAST COUNTIES EARLIER TODAY WHERE THE PREFRONTAL TROF WAS LOCATED. THE OUTFLOW FROM THIS PREVIOUS ACTIVITY IS MOVING NORTHWARD TOWARD THE APPROACHING COLD FRONT. A MUCH NEEDED AND DESERVED DRY PERIOD WILL CONTINUE THRU TUESDAY NIGHT AS HIGH PRESSURE BUILDS INTO THE SOUTHEAST STATES.
411 PM EDT MON APR 20 2015 A COLD FRONT WILL MOVE EAST THROUGH THE GREAT LAKES AND OHIO VALLEY TODAY. BREEZY TO WINDY CONDITIONS ARE EXPECTED ON TUESDAY AHEAD OF A WEAK COLD FRONT.
211 PM EDT MON APR 20 2015 A COLD FRONT WILL MOVE ACROSS THE REGION TONIGHT. HIGH PRESSURE WILL BUILD OVER THE AREA TUESDAY.
OVERNIGHT TEMPERATURES WILL BE COOL AGAIN WITH SOME AREAS EXPECTED TO BE NEAR FREEZING AROUND SUNRISE. DAYTIME TEMPERATURES ON TUESDAY WILL CONTINUE TO WARM INTO THE LOWER 70S AHEAD OF THE NEXT COLD FRONT EXPECTED TO PUSH INTO THE AREA BY TUESDAY EVENING.
SMALL HAIL IS POSSIBLE OVER THE HIGHER TERRAIN UNDER THE AFTERNOON STRONGEST CELLS. EXPECT SHOWERS AND ISOLATED THUNDERSTORMS TO MAINLY FORM ALONG THE RIDGES AGAIN BY EARLY AFTERNOON.
Pleasant springtime conditions will persist through Tuesday as high pressure remains in dominant control across the region.
1227 PM CDT MON APR 20 2015 HIGH PRESSURE WILL CONTINUE TO CIRCULATE THROUGH THE HIGH PLAINS IN CONJUNCTION WITH DEEPENING LOW PRESSURE ACROSS THE LOWER GREAT LAKES.
TEMPS WERE IN THE LOW 30S IN THE EAST AND UPPER 30S ACROSS THE WEST. THEREFORE HIGHS SHOULD STAY A LITTLE WARMER ACROSS THE WESTERN FA. SFC RIDGING BUILDS IN BEHIND THE DEPARTING LOW PRESSURE SYSTEM FOR WED AND THU.
I HAVE KEPT MOST OF THE HIGHER POP VALUES ALONG AND SOUTH OF HIGHWAY 50 AS THIS AREA IS CLOSER IN PROXIMITY TO THE AFOREMENTIONED FRONTOGENESIS. TOMORROW: WARMER TEMPERATURES ARE IN STORE FOR TOMORROW. A WEAK WARM FRONT MOVES NORTHWARD TOMORROW, WITH SLIGHTLY WARMER 850-HPA TEMPS IN ITS WAKE.
331 PM EDT MON APR 20 2015 UNSETTLED WEATHER CONTINUES THROUGH THE REMAINDER OF THE WEEK AS AN UPPER TROUGH TAKES RESIDENCE OVER THE NORTHEAST. VERTICALLY STACKED LOW PRESSURE SYSTEM WILL REMAIN NORTH OF THE GREAT LAKES THROUGH THE PERIOD. LARGE UPPER LEVEL TROUGH/LOW REMAINS OVER THE REGION, KEEPING THREAT FOR SHOWERS THROUGHOUT THE PERIOD AS SEVERAL DISTURBANCES ROTATE ABOUT THE LOW. BREAKS IN CLOUDS WITH ANY APRIL SUNSHINE WILL HELP TEMPERATURES WARM TO THE UPPER 50S OR WARMER DURING THE DAYTIME, BUT WITH PERSISTENT NW FLOW, MOSTLY CLOUDY CONDITIONS EXPECTED.
MAX TEMPS SLIGHTLY WARMER THAN CLIMO FOR INLAND LOCATIONS.
406 PM CDT MON APR 20 2015 LATEST SURFACE ANALYSIS SHOWED A COLD FRONT FROM OHIO TO FLORIDA PANHANDLE TO NORTHWEST GULF. RIDGE OF HIGH PRESSURE WAS LOCATED FROM SOUTHWEST KANSAS TO NORTH CENTRAL TEXAS. DRY AIR AND HIGH PRESSURE WILL SETTLE IN TONIGHT THROUGH TUESDAY NIGHT.
HIGH PRESSURE ALOFT WILL BUILD EAST INTO THE GREAT BASIN ON TUESDAY. A LOW PRESSURE SYSTEM OFF THE SOUTHERN CALIFORNIA COAST WILL MOVE INLAND TUESDAY.
WENT A LITTLE COOLER WITH TEMPS ON TUE AS CLOUDS SHOULD BE WIDESPREAD THEN RAISED A BIT TUE NGT AS FLOW OFF THE GULF INCREASES.
ISOLD TO SCTD SHRA AND -TSRA WERE NOTED OVER THE HIGHER TRRN AND WERE MOVING ONTO THE PLAINS. ISOLD PRECIP ACTIVITY WILL CONTINUE OVER THE HIGHER TRRN WITH SOME OF THIS ACTIVITY MOVING ONTO THE PLAINS. IT WILL BE WARMER TOMORROW WITH HIGHS EXPECTED TO REACH INTO THE LOWER 70S MOST OF THE PLAINS.
304 PM EDT MON APR 20 2015 DESPITE A FEW REPORTS OF REDUCED VISIBILITIES IN THE LOWER KEYS EARLY THIS AFTERNOON. TEMPERATURES IN THE LOWER KEYS RANGE FROM 85 AND 90 DEGREES.
645 PM EDT MON APR 20 2015 A COLD FRONT WILL CROSS THE AREA LATE TONIGHT.
COLD FRONT WILL SLOWLY SLIDE EAST AND SOUTH THROUGH THE DAY. ALSO ADDED IN A SLIGHT CHANCE ACROSS THE NORTH AS THE UPPER LEVEL LOW SWINGS THROUGH. THE COLD FRONT HAS CLEARED THE NORTHERN TAF SITES THIS AFTERNOON AND WILL CLEAR MGM AND TOI LATER THIS AFTERNOON.
420 PM EDT MON APR 20 2015 LOW PRESSURE WILL APPROACH FROM THE SOUTHWEST OVERNIGHT AND CROSS THE REGION LATER TUESDAY. UPPER LEVEL LOW PRESSURE FROM THE GREAT LAKES WILL THEN KEEP UNSETTLED CONDITIONS THROUGH THE LATE WEEK. XCPT THE HIGHEST CNTRL ME HIGHLANDS AND MT KATAHDIN TRRN.
116 PM EDT MON APR 20 2015 A COLD FRONT WILL APPROACH THIS EVENING AND MOVE OFFSHORE LATE MONDAY NIGHT.
THIS EVENING THROUGH TUESDAY NIGHT NORTHWEST FLOW CONTINUES ACROSS THE NORTHERN PLAINS AS A STRONG AREA OF LOW PRESSURE MOVES INTO THE GREAT LAKES REGION. HIGH PRESSURE IS BEGINNING TO BUILD OVER THE NORTHERN ROCKIES. DRY WEATHER AND A SLIGHT WARMING TREND IS EXPECTED FOR THE NEXT FEW DAYS AS UPPER LEVEL HIGH PRESSURE BUILDS OVER THE WESTERN CONUS. A SLIGHT WARMING TREND WILL BEGIN AS HIGH PRESSURE BUILDS. TEMPERATURES WILL BE 5 TO 10 DEGREES WARMER THAN TODAY WITH READINGS IN THE MID 50S TO LOWER 60S.
MEDIUM BROAD MID LEVEL RIDGING TAKES SHAPE ACROSS THE WI WITH UPSTREAM LEADING TO SFC/850 CYCLOGENESIS ACRS MN.
HIGH PRESSURE WILL GRADUALLY MOVE ACROSS THE TENNESSEE VALLEY THROUGH WEDNESDAY.
/issued 345 PM CST TUE JAN 12 2016/ (Tonight and Wednesday) Overnight temperatures will be warmer than what we saw this morning, as surface dewpoints will be higher and some upper level cloud cover is expected. Low temperatures are still expected to be near seasonal normals, in the low to mid 30s. Warmer temperatures are expected on Wednesday as southwest winds increase to 6 to 12 mph, with higher gusts. High temperatures are generally expected to be in the low to mid 60s.
A LARGE AREA OF HIGH PRESSURE WILL CONTINUE TO BUILD OVER THE TN VALLEY TONIGHT. DUE TO A LARGE AREA OF HIGH PRESSURE OVER THE CWA.
1159 PM CST TUE JAN 12 2016 PLENTY OF STRATUS POURED ACROSS THE LOCAL AREA TODAY AS A COLD FRONT STRETCHED ACROSS CENTRAL NEBRASKA INTO SOUTHEASTERN KANSAS. ALREADY SOME SIGNS ON SATELLITE OF THIS FRONT SLOWLY BEGINNING TO INCH EASTWARD AS THE LOW LEVEL FLOW SHIFTS MORE WESTERLY ACROSS THE HIGH PLAINS. WITH WARMER AIR ADVECTING ACROSS THE LOCAL AREA OVERNIGHT. MODELS REMAIN IN GOOD AGREEMENT SHOWING BROAD UPPER LEVEL RIDGING SLIDING INTO AND THROUGH THE REGION WEDNESDAY NIGHT INTO THURSDAY.
AND DEWPOINTS MAINLY IN THE LOWER TO MID 30S MAY MIX OUT TO ACCOMODATE THESE FALLING TEMPS.
WILL GRADUALLY DIMINISH IN COVERAGE AND INTENSITY AS HIGH PRESSURE BUILDS INTO THE AREA FROM THE WEST. LK BANDING CONTS TO ERODE IN PRESENCE OF LWRG INVERSION HGTS AND CONTD DRY ENTRAINMENT ASSOCD/W ARCTIC RIDGE BLDG INTO THE WRN OH VALLEY THIS EVENING. CONTINUE TO UNDERCUT MOS WITH MIN TEMPS AMID FRESH SNOWPACK/CORE OF LOW LEVEL THERMAL TROF OVERHEAD. THIS WAVE TO FOLLOW INTO SOUTHERN PERIPHERY OF DOWNSTREAM TROF. ACTIVE PATTERN CONTINUES AS FORECAST PERIOD BEGINS WITH SHORT WAVE ENERGY ROUNDING THE BASE OF DEEP UPPER LOW OVER HUDSON BAY WITH WEAK CLIPPER SFC REFLECTION OVER THE NORTHERN GREAT LAKES.
1114 PM CST TUE JAN 12 2016 Cold high pressure moving over the region currently will slide to our southeast by tomorrow morning.
LIGHT SURFACE WINDS WILL SHIFT TO NORTHWEST AS SURFACE TROF PASSES BEFORE 12Z WEDNESDAY. SURFACE TROF PASSES BETWEEN 06Z AND 12Z WEDNESDAY.
A WARM FRONT IS OVER THE AREA TONIGHT FOR RAIN AND MOUNTAIN SNOW. EASTERLY WINDS WILL KEEP THE AIR MASS IN THE PASSES BELOW FREEZING WITH SNOW EXPECTED AT BOTH STEVENS AND SNOQUALMIE. THE COLD FRONT WILL MOVE INLAND WEDNESDAY MORNING WITH SHOWERS EASING THROUGH THE AFTERNOON. WEAK HIGH PRESSURE WILL BRING A BRIEF BREAK IN THE ACTION LATE WEDNESDAY NIGHT. THE NEXT WARM FRONT WILL CLIP WESTERN WA ON THURSDAY FOR MORE RAIN AND MOUNTAIN SNOW.
HIGH PRESSURE AND VALLEY INVERSIONS WILL REMAIN IN PLACE THROUGH WEDNESDAY. A DRY AND STABLE AIRMASS REMAINS IN PLACE ACROSS THE FORECAST AREA THIS EVENING WITH UPPER RIDGE CENTERED OVER THE GREAT BASIN. WITH 700MB TEMPERATURE AROUND -4C OVER SLC THIS EVENING AND COLDER AIR REMAINING TRAPPED IN THE LOWER VALLEYS.
SHOULD BE EVEN WARMER ON THURSDAY FOR SOUTH CENTRAL AND EASTERN KANSAS. AS A COLD FRONT DROPS SOUTHWARD INTO CENTRAL KANSAS THURSDAY AFTERNOON.
ROLLER COASTER WEATHER BETWEEN WET AND DRY CONDITIONS CONTINUES HIGH PRESSURE WILL MOVE FROM THE SOUTHEASTERN UNITED STATES INTO THE ATLANTIC WATERS. AN UPPER LEVEL LOW CURRENTLY WORKING INTO MEXICO FROM THE PACIFIC WATERS WILL CONTINUE TO MOVE QUICKLY TO THE EAST AND WILL HELP TO GENERATE LOW PRESSURE OVER THE GULF OF MEXICO ON THURSDAY.
1229 AM EST WED JAN 13 2016 A MOISTURE LIMITED REINFORCING COLD FRONT WILL CROSS THE AREA THIS EVENING WITH DRY AND COOL CONDITIONS PREVAILING THROUGH THURSDAY.
318 AM CST WED JAN 13 2016 CLEAR SKIES AND TEMPERATURES IN THE 30S ARE THE RULE THIS EARLY AM ACROSS THE REGION AS HIGH PRESSURE CONTINUES OVER OUR REGION. HIGH PRESSURE SLIDES TO OUR EAST ON THURSDAY.
AND THE FACT THAT HIGH PRESSURE MOVING IN WILL LIKELY LEAD TO DECOUPLING OVERNIGHT. THE REMAINDER OF THE CWA SHOULD BE IN THE SINGLE DIGITS (NORTHERN HALF) TO THE LOW TEENS (SOUTHERN HALF). A COLD FRONT WAS PASSING SOUTHEAST THROUGH THE JKL FORECAST AREA AT MID AFTERNOON. COLDER AIR WILL CONTINUE TO ADVECT INTO THE REGION BEHIND THE FRONT AND TEND TO KEEP THE LOWEST LEVELS MIXED FOR MOST OF THE NIGHT. AS ANOTHER DEEP UPPER LEVEL TROUGH DIGS ACROSS THE EASTERN CONUS.
153 AM EST WED JAN 13 2016 BRIEF RIDGE OF HIGH PRESSURE WILL END SNOW SHOWERS THIS MORNING BUT TEMPERATURES WILL BE COLD. WITH WIND CHILL VALUES EXCEEDING -10 IN THE HIGHER TERRAIN IN WEST VIRGINIA. THE WINTER WEATHER ADVISORY FOR THE RIDGES STILL STANDS.
TODAY THROUGH THURSDAY NIGHT WATER VAPOR SHOWS HIGHLY AMPLIFIED RIDGE BUILDING INTO THE NRN ROCKIES. AHEAD OF NEXT TROF MOVING ONSHORE THE WEST COAST. UPPER RIDGE WILL ADVANCE THROUGH THE NRN ROCKIES INTO THE NRN PLAINS. FAST MOVING UPPER TROF WILL PUSH A CDFNT THROUGH THE CWFA EARLY IN THE DAY.
250 AM CST WED JAN 13 2016 A series of upper level troughs will move quickly across the country the next several days.
TONIGHT THROUGH WEDNESDAY NIGHT STRONG HIGH PRESSURE WILL BE OVER THE WEST COAST TONIGHT WITH AN UPPER TROUGH OVER THE EASTERN U. THIS LARGE RIDGE WILL MOVE TO THE ROCKIES BY WEDNESDAY MORNING AND TO THE PLAINS WEDNESDAY NIGHT. AS THE UPPER TROUGH MOVES TO THE EAST COAST. A WEAK COLD FRONT ACROSS ARKANSAS WILL MOVE BACK TO THE NORTH AS A WARM FRONT OVERNIGHT. THIS WILL MAKE FOR WARMER TEMPERATURES WEDNESDAY.
A COLD FRONT WILL BRING INCREASED CLOUD COVER AND BREEZY WINDS TO THE AREA THURSDAY.
A FRONT IS EXPECTED TO MAKE ITS WAY THROUGH CENTRAL ALABAMA TONIGHT TO REINFORCE HIGH PRESSURE OVER THE AREA. WITH RIDGE EXPECTED TO BE OVER THE DEEP SOUTH ON WEDNESDAY ONLY LIGHT WINDS ARE EXPECTED DURING THE DAY TOMORROW ALONG WITH CLEAR SKIES.
A WEAKENING COLD FRONT ON THE COAST WILL DISSIPATE OVERNIGHT.
WARM FRONT OUT WEST WILL SLOWLY PUSH EAST THROUGH TONIGHT AND WEDNESDAY. MUCH WARMER TEMPS ARE EXPECTED ON WEDNESDAY AS THE AFOREMENTIONED WAA PATTERN CONTINUES. 850 TEMPS ARE PROGGED TO BE +2 TO +4 C ACROSS THE MISSOURI RIVER VALLEY RESULTING IN HIGHS OF 32 F OR POSSIBLY WARMER.
325 AM EST WED JAN 13 2016 LOW PRESSURE WILL INTENSIFY AS IT MOVES NORTHEAST INTO THE MARITIMES TODAY.
136 AM CST WED JAN 13 2016 AT 06Z, A COLD FRONT HAD DROPPED S TO NEAR THE I-20 CORRIDOR. THE SHORT RANGE MODELS REMAIN IN GOOD AGREEMENT ON A SRN STREAM WAVE AND PLAINS TROF ADVANCING NE AND E ON THU NIGHT INTO FRI. THE SRN STREAM WAVE INDUCES A DISTINCT SFC WAVE ACROSS THE GULF COAST WHILE A STRONGER NEG TILT TROF ADVANCES OVER THE MID MS/OH VALLEYS TO OUR NW.
On Thursday another system will move into the region with the higher rainfall totals over the northern half of the Sacramento Valley.
THERE MAY BE A RAIN/SNOW MIX IN THE TREASURE VALLEY WITH MORNING TEMPS IN THE LOWER 30S. GUSTY SOUTHEAST WINDS WILL CONTINUE THROUGH WEDNESDAY AHEAD OF A COLD FRONT. THE COLD FRONT WILL MOVE THROUGH WEDNESDAY NIGHT.
DRY AND MILD CONDITIONS EXPECTED FOR WEDS AS AN UPPER RIDGE AXIS TRANSLATES EAST ACROSS THE CWA WHILE WEAKENING. AN UPPER TROF WILL APPROACH THE CWA WEDS NIGHT FROM THE PACIFIC NW. OTHERWISE EXPECT SOME SNOW SHOWERS TO REACH THE HIGHER MTNS THURSDAY MORNING AND MORE ISOLATED ACTIVITY ACROSS THE REST OF THE CWA THURSDAY ALONG WITH COOLER TEMPERATURES AS THE UPPER TROF AXIS MOVES BY. CLEARING OUT FOR THE MOST PART THURSDAY NIGHT BUT SOME SNOW SHOWERS STILL PERSISTING OVER THE HIGHER MTNS IN FAVORABLY MOIST WNW FLOW.
MOSTLY CLOUDS SKIES AND SLIGHTLY COOLER CONDITIONS ARE EXPECTED ON WEDNESDAY AS A WEAK TROUGH TRAVERSES THE REGION.
454 AM EST WED JAN 13 2016 LOW PRESSURE WILL INTENSIFY AS IT MOVES NORTHEAST INTO THE MARITIMES TODAY.
WINDS WILL DECREASE THIS EVENING AND EXPECTING A DRY NIGHT TONIGHT WITH TEMPERATURES DROPPING INTO THE LOW SINGLE DIGITS ACROSS MUCH OF THE AREA.
BREEZY CONDITIONS ARE EXPECTED THURSDAY IN ADVANCE OF THE NEXT COLD FRONT.
247 AM EST WED JAN 13 2016 HIGH PRESSURE WILL MOVE OVERHEAD TODAY. AS THE HIGH MOVES OFFSHORE ON THURSDAY.