Aikyam-Lab/Synoptic-Bench huggingface dataset:
TODAY THROUGH FRIDAY NIGHT CURRENT SURFACE ANALYSIS SHOWS HIGH PRESSURE OVER THE CENTRAL ROCKIES. UPPER LEVEL ANALYSIS SHOWS RIDGE AXIS OVER THE GREAT BASIN REGION EARLY THIS MORNING. THE WARMING TREND WILL CONTINUE OVER THE NEXT COUPLE OF DAYS AS RIDGE MOVES EAST INTO THE PLAINS ON FRIDAY. SOUTH TO SOUTHWEST WINDS WILL CONTINUE TO INCREASE ACROSS MUCH OF NORTHEAST WY AND INTO PORTIONS OF THE BLACK HILLS AS SURFACE TROF SLIDES INTO NORTHEAST WY AND LOW LEVEL JET INCREASES OVER THE AREA. FRIDAY WILL BE THE MILDEST DAY OF THE WEEK IN MOST AREAS WITH THE RIDGE AXIS OVER THE REGION.
With the light precipitation streaming in this evening, pockets of light freezing rain/drizzle is a possibility, particularly for the valleys of northwestern Montana. However, due to the very cold temperatures seen the past few days, subsurface ground temperatures will still be below freezing. Once the cold front passes in the evening, snow levels will crash to the valley floors allowing rain/snow mix to change to all snow, though only minimal accumulations are expected.
A WIDE AREA OF HIGH PRESSURE WILL SETTLE IN OUR NORTH ACROSS THE OHIO VALLEY.
A STRONG UPPER LEVEL LOW CURRENTLY MOVING INTO THE LOWER GREAT LAKES REGION IS PROVIDING CONTINUED STRONG FLOW ALOFT ACROSS THE OHIO RIVER VALLEY. THIS UPPER LEVEL LOW WILL CONTINUE TO MOVE EAST OF THE REGION THROUGHOUT THE MORNING. WITH HIGH PRESSURE ABLE TO TAKE FULL HOLD OF THE REGION THROUGH THE REMAINDER OF THE SHORT TERM FORECAST. WITH DRY AIR FROM THE INCOMING STRONG AREA OF HIGH PRESSURE CUTTING OFF ALL CLOUDS BY 18Z. COULD BE LOOKING AT RH VALUES IN THE LOW 30 PERCENT RANGE BY FRIDAY AFTERNOON PEAK HEATING. HIGH PRESSURE OVERHEAD WILL KEEP US DRY AND MOSTLY SUNNY THROUGH THE WEEKEND.
550 AM EST THU DEC 3 2015 THE AVIATION SECTION HAS BEEN UPDATED BELOW HIGH PRESSURE WILL RESULT IN DRY CONDITIONS THROUGH THE WEEKEND WITH A WEAK WARMING TREND.
RIDGE OVER THE REGION TODAY WILL QUICKLY TRANSITION TO STRONG MID LEVEL SOUTHWEST FLOW TONIGHT INTO FRIDAY. AND POTENTIAL FOR SOME SNOW IN THE HIGH COUNTRY.
PV ANALYSIS AND FORECAST MODEL SOUNDINGS INDICATE THAT A DRY UPPER RIDGING PATTERN WILL PREVAIL OVER SOUTHERN COLORADO INTO TONIGHT. AN UPR RIDGE WL MOVE EAST OF THE AREA ON FRI AS AN UPR TROF MOVES INTO ID AND THE GREAT BASIN.
SOME LINGERING CIRRUS OVER THE SOUTHEAST PORTION OF THE FORECAST AREA WILL BE EXITING EAST THIS MORNING WITH THE APPROACH OF AN UPPER TROF FROM THE WEST. HIGH PRESSURE TO SETTLE INTO THE SOUTHERN STATES TODAY WITH THE CI SHIELD GETTING A LITTLE PUSH FURTHER OFFSHORE. ALONG THE COAST WILL BE A BIT COOLER.
HIGH PRESSURE DOMINATES THE REGION TODAY AND TOMORROW WITH MOSTLY CLEAR SKIES AND LIGHT NORTHERLY WINDS. THE DRY AIRMASS TONIGHT COMBINED WITH RIDGING OVERHEAD, LIGHT WINDS, AND CLEAR SKIES WILL KEEP OVERNIGHT LOWS BELOW NORMAL.
SKIES SHOULD CLEAR OUT THIS MORNING INTO THIS AFTERNOON WITH WARMER TEMPERATURES FOR TODAY THROUGH FRIDAY AS UPPER RIDGING MOVES BY IN THE WAKE OF THE UPPER IMPULSE.
531 AM CST THU DEC 3 2015 BROAD AREA OF HIGH PRESSURE WILL SHIFT EAST FROM NEBRASKA AND KANSAS TO SRN IA INTO ARKANSAS BY THIS AFTERNOON. SFC WINDS BECOMING WEST TO SOUTHWEST TODAY WILL YIELD MODEST LOW LEVEL WARM ADVECTION TO GO ALONG WITH THE MID LEVEL WARMING LEADING TO WARMER TEMPERATURES TODAY.
VFR THROUGH THE PERIOD UNDER DRY HIGH PRESSURE. AS STRONG MODEL CONSENSUS DEPICTING SFC RIDGING INFLUENCES TO CONTINUE BUILDING INTO THE REGION FROM THE CNTRL PLAINS/ROCKIES THRU FRI MORNING. THIS RIDGING SFC WX PATTERN WILL BE SUPPORTED ALOFT BY CURRENT NWLY FLOW REGIME BEING REPLACED BY BROAD UPPER LEVEL RIDGING INFLUENCES THRU AT LEAST SAT MORNING. BEFORE A GRADUAL ORIENTATION BACK TO SWLY FLOW BEGINS AS AN UPPER LEVEL TROUGH MOVES INTO THE CNTRL PLAINS/MID MS RIVER VALLEY. AS SFC RIDGING INFLUENCES BEGIN TO SHIFT EWD. AND AS APEX OF UPPER LEVEL RIDGING BECOMES ESTABLISHED ACROSS THE REGION AS FRI PROGRESSES. AS MORE OF A SWLY UPPER LEVEL FLOW ORIENTATION DEVELOPS AND SFC RIDGING INFLUENCES CONTINUE TO SHIFT SLOWLY EWD.
With full sun, most areas will rise into the lower 60s. Tonight, it will not be quite as cold, although the Concho Valley and areas east and south will still see temperatures at or just below freezing.
635 AM EST THU DEC 3 2015 HIGH PRESSURE BUILDS ACROSS THE REGION THROUGH THE REST OF THE WEEK.
Currently, there is northwest flow over the CWA with an upper trough over the northeastern conus and another trough just off the west coast. The upper trough off the west coast will move over the Pacific Northwest on Friday.
851 AM EST THU DEC 3 2015 A COLD FRONT CONTINUES TO MOVE SOUTH INTO CENTRAL FLORIDA. WITH MUCH COOLER HIGHS IN THE LOWER TO MID 60S FOR SE GA/NE FL AND UPPER 60S/AROUND 70 FOR NORTH CENTRAL FL.
/ISSUED 326 AM CST THU DEC 3 2015/ Weather pattern continues to support warmer than seasonal normal temperatures and primarily dry conditions through the next seven days.
807 AM EST THU DEC 3 2015 THE COLD FRONT CONTINUES MOVING OFFSHORE WITH HIGH PRESSURE ALONG WITH COOLER AND DRIER AIR ENTERING THE REGION. THE HIGH PRESSURE AND DRY CONDITIONS WILL PERSIST OVER THE REGION THROUGH THE WEEKEND. DRYING HAS OCCURRED BEHIND THE COLD FRONT. LEANED TOWARD THE LOWER TEMPERATURE GUIDANCE.
/ISSUED 315 AM EST THU DEC 3 2015/ A MUCH QUIETER SHORT TERM FOR NORTH AND CENTRAL GEORGIA AS HIGH PRESSURE BUILDS INTO THE REGION. HIGH PRESSURE WILL REMAIN OVER THE CWA TONIGHT AND FRIDAY KEEPING SKIES MOSTLY CLEAR. BUT DRY HIGH PRESSURE BUILDING INTO THE AREA IN THE LOWER LEVELS SHOULD KEEP THE FORECAST AREA DRY. WEAK UPPER RIDGING INDICATED FOR THE WEEKEND AHEAD OF THE NEXT SYSTEM DIGGING INTO THE CENTRAL U.
BUT A FEW LOW CLOUDS COULD SNEAK INTO THE HIGHWAY 82 CORRIDOR DURING THE MORNING HOURS. HIGH PRESSURE TO OUR WEST WILL CONTINUE TO SETTLE INTO THE REGION OVER THE NEXT 48 HOURS. CAUSING A COOLER DRIER AIRMASS TO DO LIKEWISE.
STLT SHOWS SOME SCT WRAP ARND CLOUDS ASSOCIATED WITH THE UPPER LOW OVER PORTIONS OF TN.
952 AM EST THU DEC 3 2015 A COLD FRONT NOW APPROACHING THE TAMPA BAY AREA EARLY THIS MORNING WILL CONTINUE TO MOVE SOUTH AND INTO SOUTHWEST FLORIDA DURING THE AFTERNOON WHERE IT WILL EVENTUALLY STALL OUT THROUGH FRIDAY. IFR/MVFR CIGS ALONG AND AHEAD OF A COLD FRONT NOW AFFECTING KPIE. A COLD FRONT NOW MOVING SOUTH THROUGH THE EAST CENTRAL GULF WATERS WILL CONTINUE TO MOVE INTO THE SOUTHERN WATER THROUGH TONIGHT WHERE IT WILL STALL OUT THROUGH FRIDAY.
The upper level low that has impacted our weather the past several days will off to the east into the northeastern U.
THIS HIGH ENCOMPASSING ALL OF THE ERN AND CNTRL USA. WARMER TEMPERATURES AND A SMALL CHANCE FOR PRECIPITATION WILL BE THE MAIN STORY THROUGH THE PERIOD.
A COLD FRONT WILL MOVE OFFSHORE TODAY WITH HIGH PRESSURE TAKING OVER THROUGH THE WEEKEND. WIND GUSTS WILL BE A FACTOR TODAY AS OBSERVATIONS ALREADY REPORTING A NUMBER OF GUSTS INTO THE HIGH TEENS AND LOWER 20S. THE COMBINATION OF SURFACE WINDS DECREASING AND SKIES CLEARING OUT WILL BRING NEAR OPTIMAL CONDITIONS FOR RADIATIONAL COOLING TONIGHT AND WITH THE VERY DRY CONDITIONS EXPECTED IT WILL BE EASY FOR TEMPERATURES TONIGHT O DROP INTO THE LOWER 30S AND MOST LIKELY MID TO UPPER 20S IN SOME OF OUR NORMALLY COOL SPOTS. SUBSIDENCE WILL MAINTAIN CLEAR SKIES WHILE THE LOW LEVEL CAA WILL ABATE. MAX TEMPS WILL END UP A COUPLE OF DEGREES SHY OF NORMAL IN THE LOW-MID 50S. CHILLY AGAIN FRIDAY NIGHT WITH MIN TEMPS AT OR SLIGHTLY BELOW FREEZING.
SKIES WILL CLEAR LATER TODAY WITH AN EXCELLENT RADIATIONAL COOLING NIGHT WITH READINGS EXPECTED TO FALL TO THE LOWER 40S RANCHLANDS TO MID 40S IN THE VALLEY.
A HIGH PRESSURE RIDGE CROSSING THE DESERT SOUTHWEST WILL BRING CONTINUED WARMER TEMPERATURES TODAY.
344 AM MST THU DEC 3 2015 12Z TAF CYCLE AS A RIDGE OF HIGH PRESSURE CROSSES. PATCHES OF HIGH CIRRUS WILL PROBABLY MOVE IN FROM THE WEST TONIGHT ONCE THE RIDGE AXIS BEGINS TO SHIFT EAST OF NEW MEXICO. A WARMING TREND WILL CONTINUE THROUGH FRIDAY AS A RIDGE OF HIGH PRESSURE CROSSES.
305 AM PST THU DEC 3 2015 UPDATED AVIATION SECTION LOW PRESSURE WILL MOVE ACROSS THE WEST COAST TODAY. HIGH PRESSURE WILL BUILD THROUGH THE WEEKEND BRINGING DRY AND WARMER CONDITIONS. TROUGH WILL SWING ACROSS THE WEST COAST TODAY/TONIGHT.
1058 AM EST THU DEC 3 2015 SCATTERED SNOW SHOWERS AND FLURRIES WILL TAPER OFF TODAY AS AN UPPER LEVEL LOW EXITS. HIGH PRESSURE WILL RETURN DRY WEATHER FOR THE WEEKEND. EXPECT CLOUDLESS CONDITIONS TO PERSIST THROUGH THE BULK OF THE WEEKEND AS A BROAD AREA OF VERTICALLY-STACKED HIGH PRESSURE WILL SLOWLY PASS THROUGH THE REGION.
925 AM EST THU DEC 3 2015 THE COLD FRONT CONTINUES MOVING OFFSHORE WITH HIGH PRESSURE ALONG WITH COOLER AND DRIER AIR ENTERING THE REGION. THE HIGH PRESSURE AND DRY CONDITIONS WILL PERSIST OVER THE REGION THROUGH THE WEEKEND. DRYING HAS OCCURRED BEHIND THE COLD FRONT. LEANED TOWARD THE LOWER TEMPERATURE GUIDANCE.
WILL LIKELY SEE A FROST ACROSS THE CAPROCK WHILE TEMPERATURES ARE STRUGGLING TO FALL BELOW FREEZING ACROSS THE ROLLING PLAINS.
SURFACE TO UPPER LEVEL RIDGES SLOWLY SLIDE ACROSS SOUTH CENTRAL TEXAS. SOME SPOTS IN THE HILL COUNTRY WILL FALL TO NEAR OR SLIGHTLY BELOW FREEZING.
HIGH CLOUDS WILL INCREASE SOME ACROSS WESTERN OKLAHOMA BY LATE MORNING/EARLY AFTERNOON AS A TROUGH APPROACHES.
805 AM EST THU DEC 3 2015 THE COLD FRONT CONTINUES MOVING OFFSHORE WITH HIGH PRESSURE ALONG WITH COOLER AND DRIER AIR ENTERING THE REGION. THE HIGH PRESSURE AND DRY CONDITIONS WILL PERSIST OVER THE REGION THROUGH THE WEEKEND. DRYING HAS OCCURRED BEHIND THE COLD FRONT. THE WARMER TEMPERATURE GUIDANCE IS USUALLY BEST WITH AN EARLY MORNING FRONTAL PASSAGE BUT BECAUSE OF THE HIGH CLOUDINESS AND LOW SUN ANGLE WE USED THE GUIDANCE CONSENSUS FOR THE TEMPERATURE FORECAST TODAY. LEANED TOWARD THE LOWER TEMPERATURE GUIDANCE.
ANTICIPATE FINAL SHUTDOWN OF FLURRY POTENTIAL BY 15 UTC AS CLOUD BEARING LAYER FLOW TRANSITIONS INTO LOW AMPLITUDE RIDGING/ANTICYCLONIC ACROSS SOUTHWEST UPPER GREAT LAKES. HAVE TRIMMED MAX TEMPS SLIGHTLY GIVEN AM CLOUDS/INVERSION FOLLOWED BY 925MB THERMAL TROF FIRMLY ENTRENCHED OVER CWA THIS AFTERNOON. IN LINE WITH LATEST WARMER MAV GUID FOLLOWING TWEAK TO LATEST MULTIMODEL BLEND WITH PRIOR FORECAST.
THE EXCEPTION IS ACROSS AND EAST OF THE BUFFALO RIDGE WHERE TEMPERATURES ARE STILL IN THE TEENS. ONE BIG DIFFERENCE CAN BE SEEN AT 3 AM WHERE PIPESTONE WAS 3 ABOVE AND SLAYTON WAS 18 NEAR THE PEAK OF THE RIDGE. WITH ONLY VERY WEAK TROUGHING MOVING THROUGH DO NOT EXPECT WINDS TO INCREASE QUICKLY IN THE LOWER SPOTS THUS HELD ON TO COLD TEMPERATURES IN THE VALLEYS THROUGH MID TO LATE MORNING. TEMPERATURES TODAY SHOULD BE NICELY WARMER THAN YESTERDAY AS A WESTERLY MIXING GRADIENT IS IN PLACE. BY TONIGHT WEAK RIDGING IN THE EASTERN CWA WILL WEAKEN AS SOUTHERLY FLOW INCREASES.
Meanwhile, the HRRR hangs on to the low clouds through the entire day. Have therefore undercut the MAV guidance by several degrees, with afternoon highs remaining in the lower to middle 40s.
THESE CLOUDS ARE SYMPTOMATIC OF MOISTURE TRAPPED UNDER A STRONG SUBSIDENCE INVERSION PRODUCED UNDER THE RIDGE ALOFT OVER THE GREAT LAKES. WE WILL FEEL THE EFFECTS OF THE SLOW MOVING UPPER LOW ONCE MORE TODAY BUT CONDITIONS RAPIDLY IMPROVE IN ITS WAKE AS RIDGING ALOFT AND AT THE SFC BUILD ACROSS THE REGION. THE UPPER LOW WILL GAIN FORWARD MOMENTUM AS IT BECOMES ABSORBED INTO THE ACCELERATING SOUTHERN STREAM OF THE JET AIMED NE ALONG THE EASTERN SEABOARD. WILL DELAY THE ONCOMING RIDGE TIL THIS AFTERNOON. THE WAVE WILL PRODUCE SOME CLOUDS AS WELL HELPING TO KEEP THE HIGH TEMPS SUBDUED NEAR 40F THIS AFTERNOON. STRONG WEST COAST RIDGE WILL BE MAKING A PUSH EASTWARD BEGINNING TO REACH SOUTHERN MI THIS EVENING.
A SERIES OF SHORT WAVE TROUGHS AND SHORT WAVELENGTH RIDGES WILL MOVE ACROSS THE AREA THROUGH THE PERIOD. SHORT WAVE TROUGH MOVING ACROSS CENTRAL MAN WILL PRODUCE WARM ADVECTION AHEAD OF SHORT WAVE THIS MORNING. ANOTHER SHORT WAVE TROUGH MOVES THROUGH FRI AFTERNOON AND A WIND SHIFT MOVES THROUGH SAT MORNING IN TOW. ANOTHER SHORT WAVE TROUGH TO MOVE THROUGH SAT EVENING. A BREAK IN THE HIGH CLOUDS WILL OCCUR LATE THIS MORNING WITH ANOTHER BAND UPSTREAM.
Through at least 3 am CST Friday morning,the WFO PAH forecast area remains firmly under control of high pressure and ridging at the surface and aloft.
A COLD FRONT WILL EXIT OUR REGION PRIOR TO DAYBREAK. HIGH PRESSURE WILL FOLLOW THE FRONT FOR THE REMAINDER OF THE WEEK. A SFC COLD FRONT WILL BE EAST-SE OF OUR EASTERN PERIPHERY COUNTIES BY 10Z. NWLY WINDS BEHIND THE FRONT WILL ADVECT A MUCH DRIER AIR MASS AS EVIDENT BY DEWPOINTS IN THE 30S OVER THE NW PIEDMONT (VERSUS THE LOW-MID 50S AHEAD OF THE FRONT). AS THE UPPER LEVEL JET DRIFTS EAST IN RESPONSE TO THE PASSAGE OF THE MID LEVEL TROUGH. EXPECT OVERNIGHT TEMPS TO FALL TO NEAR OR SLIGHTLY BELOW FREEZING ACROSS CENTRAL NC. SUBSIDENCE WILL MAINTAIN CLEAR SKIES WHILE THE LOW LEVEL CAA WILL ABATE. MAX TEMPS WILL END UP A COUPLE OF DEGREES SHY OF NORMAL IN THE LOW-MID 50S. CHILLY AGAIN FRIDAY NIGHT WITH MIN TEMPS AT OR SLIGHTLY BELOW FREEZING.
AN UPPER TROUGH CURRENTLY PUSHING INTO THE PACIFIC NW AS AN AMPLIFIED RIDGE EXTENDS OVER THE INTERMOUNTAIN WEST. AN UPPER TROUGH ALSO EXTENDS OVER THE EASTERN GREAT LAKES REGION. AS THE UPPER RIDGE MOVES OVER THE NRN AND CENTRAL PLAINS TODAY.
1002 AM EST TUE DEC 8 2015 HIGH PRESSURE WILL PREVAIL INTO THE WEEKEND.
BUT LATEST WATER VAPOR IMAGERY SHOWS UPPER WAVE/TROUGH TRACKING THROUGH LOWER MICHIGAN. AS ISENTROPIC ASCENT PRODUCES ADDITIONAL SATURATION IN THE LOW LEVELS. WILL ALLOW FOR AT LEAST PARTIAL CLEARING DURING THE AFTERNOON HOURS ACROSS THE HIGHER TERRAIN OF THE IRISH HILLS/CENTRAL SECTIONS OF LOWER MICHIGAN. WHICH SHOULD HELP ASSURE MAXES TOP OUT IN THE LOW TO MID 40S. STRONGER UPPER WAVE/TROUGH OVER THE NORTHERN ROCKIES THIS MORNING WILL BE ARRIVING LATE TONIGHT INTO WEDNESDAY. WITH SURFACE DEW PTS RISING INTO THE LOWER 40S.
916 AM CST TUE DEC 8 2015 12Z KABR SOUNDING VERY DRY IN THE LOW LAYERS AND THE REGIONAL RADARS ARE SHOWING THE ECHOES OVER SOUTH CENTRAL ND DRYING UP AS THEY APPROACH OUR SW FA. MEANING THE DEEPER SNOWPACK IN THE CENTRAL RED RIVER VALLEY WILL BE COOLER AGAIN TODAY.
AIR TEMPERATURES ARE BEING HELD IN THE LOWER 70S THANKS TO THE CLOUDS AND A NORTH BREEZE. IN THE LOWER TROPOSPHERE. A PERSISTENT FRONTAL TROUGH AND SHEAR LINE REMAIN POSITIONED OVER THE STRAITS OF FLORIDA. RECENT RADAR TRENDS SUGGEST THAT THE TROUGH MAY HAVE BECOME STATIONARY. A SMALL CRAFT ADVISORY REMAINS IN EFFECT FOR THE LOWER STRAITS OF FLORIDA AND THE EXTREME SOUTHEASTERN GULF OF MEXICO BEYOND FIVE FATHOMS. A WEAK FRONTAL TROUGH OVER THE STRAITS OF FLORIDA THIS AFTERNOON.
507 AM EST TUE DEC 8 2015 HIGH PRESSURE WILL ALLOW FOR DRY CONDITIONS ACROSS THE REGION TODAY AND TONIGHT. DRY CONDITIONS WILL BE PRESENT TODAY WITH HIGH PRESSURE IN EFFECT.
615 AM EST TUE DEC 8 2015 HIGH PRESSURE WILL REMAIN OVER THE AREA TODAY THROUGH WEDNESDAY.
943 AM EST TUE DEC 8 2015 LOW PRESSURE DEEPENS OFF THE ATLANTIC COAST TODAY AND STAYS SOUTH OF THE GULF OF MAINE AS IT MOVES EAST NORTHEAST. HIGH PRESSURE CROSSES THE AREA WEDNESDAY.
FOLLOWED BY A RETURN OF COOLER WEATHER AND PRECIP CHANCES FOR THE WEEKEND.
950 AM EST TUE DEC 8 2015 SKIES HAVE CLEARED ACROSS MOST OF THE REGION THIS MORNING WITH TEMPERATURES AT THIS TIME RANGING FROM THE UPPER 40S NORTH TO THE LOWER 60S SOUTH. NO OTHER FLAGS ANTICIPATED FOR THE REMAINDER OF THE WEEK AS HIGH PRESSURE DOMINATES ACROSS THE WATERS. A WEAK FRONTAL BOUNDARY REMAINS ACROSS THE FLORIDA STRAITS WITH HIGH PRESSURE SETTLING INTO THE REGION. THIS WILL GIVE US A COOLER MORNING THAN WE HAVE SEEN THE PAST COUPE OF DAYS. NEARLY ZONAL FLOW ALOFT WILL GRADUALLY AMPLIFY AS A TROUGH BEGINS TO MOVE INTO THE GULF OF MEXICO. UPPER-LEVEL TROUGHING WILL PERSIST OVER THE REGION ON WEDNESDAY WHILE AT THE SURFACE. AN AREA OF HIGH PRESSURE WILL REMAIN IN PLACE WITH MODELS SHOWING AN INVERTED TROUGH DEVELOPING LATE IN THE DAY.
THE EXCEPTION WILL BE ALONG THE COAST WHERE HIGHS WILL ONLY BE IN THE LOWER 70S. WARMER CONDITIONS ARE EXPECTED ON WEDNESDAY AS HIGHS WILL RANGE FROM THE UPPER 70S ACROSS THE VICTORIA CROSSROADS TO LOWER 80S OVER THE COASTAL BEND WESTWARD TO THE RIO GRANDE PLAINS.
Expect highs to reach the lower 70s this afternoon under clear skies.
AS THE LOW MOVE NE IT WILL STRETCH THE SOUTHERN END OF THE FRONT.
SURFACE RIDGING CENTERED OVER EASTERN TEXAS WILL RE-POSITION ITSELF OVER THE NORTHEASTERN GULF COAST AND THIS WILL ULTIMATELY VEER WINDS BACK AROUND TO ONSHORE THIS AFTERNOON. A DRY WEEK WITH STRENGTHENING ONSHORE FLOW AS SOUTHERN PLAINS PRESSURES LOWER IN RESPONSE TO AN EVOLVING WESTERN CONUS MID-UPPER TROUGHING PATTERN.
WE HAD A LITTLE POP OF AMPLIFIED WAVE RIGHT BEHIND THE TROUGH AXIS EARLY THIS MORNING. THE WARMING ALOFT TODAY MAY HELP KEEP A WEWAK STABLE LAYER AND A SMALLER WAVE OVER THE HIGHER TERRAIN. THERE WILL BE FEWER CLOUDS TODAY IN THE SUBSIDENCE BEHIND THE TROUGH.
1049 AM EST TUE DEC 8 2015 HIGH PRESSURE RETURNS LATER TODAY THROUGH WEDNESDAY.
EVEN WITH THE LOWER CLOUD DECK AND CONTINUED OVERNIGHT WINDS.
BUT DO NOT EXPECT THIS TO BE AS DENSE GIVEN THE LOWER DEW POINTS AND CROSSOVER TEMPERATURES. CLEAR SKIES WILL PREVAIL TODAY ASIDE FROM A FEW HIGH CIRRUS CLOUD DECKS AS HIGHS WARM INTO THE LOWER TO MID 70S ABOUT 10 DEGREES ABOVE NORMAL UNDER SOUTHERLY FLOW.
647 AM EST TUE DEC 8 2015 DEEPENING LOW PRESSURE PASSES WELL TO THE SOUTH AND EAST TODAY. HIGH PRESSURE BUILDS TONIGHT AND WEDNESDAY. HIGH PRESSURE REMAINS OVER THE REGION THROUGH THE WEEKEND WITH A COUPLE OF WARM FRONTS MOVING THROUGH. AS AN UPPER TROUGH MOVES ACROSS THE AREA THIS MORNING. MID AND HIGHER LEVEL CLOUDS DEPART EARLY THIS MORNING AS THE TROUGH MOVES THROUGH. AS THE HIGHER LEVEL CLOUDS DEPART. TEMPS WILL BE COOLER TODAY AS CANADIAN AIR SETTLES IN. RIDGE BUILDS TONIGHT AS THE TROUGH DEPARTS. RIDGE AXIS MOVES EAST WEDNESDAY AHEAD OF NEXT QUICK MOVING TROUGH. FREEZING FOG.
AT 15Z /8 AM MST/ WARM FRONT AND LIGHT RAIN EXTENDED FROM BAKER COUNTY/OR THROUGH SWRN IDAHO. THE FRONT AND RAIN WILL SHIFT NE FOLLOWED BY PARTIAL CLEARING THIS AFTERNOON AND TEMPS EVEN WARMER THAN YESTERDAY. NEXT COLD FRONT. SNOW LEVELS WILL DROP BEHIND THE COLD FRONT TO ABOUT 5500-6500 FT MSL.
Above normal high temperatures well into the 40s and even lower 50s in the southern Bitterroot valley are likely with impressive minimum temperatures well above freezing tonight. LATE WEDNESDAY MORNING AND AFTERNOON a cold front will plow through region. Behind the front much cooler air will filter in bringing snow levels down to the valley floors and temperatures back to near normal by evening.
644 AM EST TUE DEC 8 2015 HIGH PRESSURE RETURNS LATER TODAY THROUGH WEDNESDAY.
COOLER WITH STRONG AND GUSTY WEST TO NORTHWEST WINDS.
UPPER LEVEL TROUGH HAS DAMPENED OUT OVER THE REGION THIS MORNING LEAVING BROADLY ZONAL FLOW WITH A FEW VORT MAXES MOVING THROUGH AT TIMES. IN THE LOWER LEVELS, WE REMAIN UNDER THE INFLUENCE OF THE BOUNDARY THAT HAS BEEN PARKED OVER THE FL KEYS/FAR SE FL PENINSULA OVER THE PAST FEW DAYS. PLACEMENT OF THE DEPARTING AND APPROACHING JET MAXES PLACES THE BEST UPPER FORCING OVER THE WATERS TO OUR EAST, WHICH IN CONCERT WITH THE LOWER LEVEL CONVERGENCE ALONG THE BOUNDARY IS WHERE THE BEST RAIN CHANCES WILL REMAIN.
THE TIMING OF A WEAK COLD FRONT ACROSS THE AREA IS THE PRIMARY FORECAST CONCERN. LIGHT SOUTHERLY WINDS THIS MORNING ARE EXPECTED TO VEER TO THE SOUTH-SOUTHWEST AND INCREASE TO 15 MPH OUT AHEAD OF A WEAK COLD FRONT APPROACHING FROM THE NORTHWEST. A COLD FRONT WILL MOVE SOUTHEASTWARD ACROSS THE CENTRAL PLAINS AND INTO THE SOUTHERN PLAINS TODAY. THE WEAK COLD FRONT WILL MOVE INTO THE NORTHWESTERLY PART OF THE FORECAST AREA BEFORE SUNSET TODAY AND BECOME MORE DIFFUSE AS IT MOVES INTO THE SOUTHEASTERN ZONES OVERNIGHT TONIGHT.
947 AM EST TUE DEC 8 2015 DEEPENING LOW PRESSURE PASSES WELL TO THE SOUTH AND EAST TODAY. HIGH PRESSURE BUILDS TONIGHT AND WEDNESDAY. HIGH PRESSURE REMAINS OVER THE REGION THROUGH THE WEEKEND WITH A COUPLE OF WARM FRONTS MOVING THROUGH. AN UPPER TROUGH MOVES ACROSS THE AREA THIS MORNING. MID AND HIGHER LEVEL CLOUDS DEPART EARLY THIS MORNING AS THE TROUGH MOVES THROUGH. AS THE HIGHER LEVEL CLOUDS DEPART. TEMPS WILL BE COOLER TODAY AS CANADIAN AIR SETTLES IN. RIDGE BUILDS TONIGHT AS THE TROUGH DEPARTS. RIDGE AXIS MOVES EAST WEDNESDAY AHEAD OF NEXT QUICK MOVING TROUGH. FREEZING FOG.
HIGH PRESSURE OVER THE APPALACHIANS WILL MOVE TO THE MID-ATLANTIC COAST TONIGHT.
Winds will pick up from the south, ahead of a trough forecast to cross the region Wednesday. The southerly winds both days ahead of the trough will mean warmer than normal readings.
WILL KEEP THE HIGH WIND HEADLINES FOR PORTIONS OF SOUTHEAST WYOMING AND WIND ADVISORIES FOR ALL OF WESTERN NEBRASKA FOR GUSTS BETWEEN 50 TO 65 MPH. WITH MID 50S TO MID 60S OVER THE HIGH PLAINS OF SOUTHEAST WYOMING.
510 AM MST TUE DEC 8 2015 A PERIOD OF WINDY CONDITIONS IS EXPECTED THIS MORNING TO EARLY AFTERNOON BEHIND A TROUGH AXIS.
SNOW LEVELS WILL DROP BEHIND THE COLD FRONT TO ABOUT 5500-6500 FT MSL.
THIS MORNING HAD A COOLER START WITH LOWS IN THE LOW/MID 30S WITH CLEAR SKIES AND HIGH PRESSURE STATIONED OVER THE REGION. THE HIGH PRESSURE WILL PUSH EAST TODAY PROVIDING SOUTHERLY FLOW INTO REGION. AS TEMPS ARE RUNNING SEVERAL DEGREES COOLER. AHEAD OF A WEAK COLD FRONT APPROACHING FROM THE NW. HIGH PRESSURE AT THE SURFACE WILL SHIFT EASTWARD THROUGH THE DAY. AS THIS TROUGH AXIS AMPLIFIES. THERE MAY BE JUST ENOUGH MOISTURE IN THE LOWER LEVELS FOR SHOWERS TO DEVELOP. AS WELL AS SLIGHTLY COOLER TEMPERATURES ON WEDNESDAY.
OVERVIEW: OVERNIGHT SFC ANALYSIS REVEALS BROAD LOW PRESSURE OVER SW CANADA DIPPING THROUGH THE PLAINS. LOW AMPLITUDE RIDGING SLIDES THROUGH THE REGION THIS AFTERNOON AND IT IS POSSIBLE WE SEE SOME DRYING/EROSION OF THE STRATUS FROM THE W/S. NEXT SHORT WAVE TROUGH IN THE PLAINS THIS MORNING WILL WORK INTO THE WESTERN GREAT LAKES TONIGHT. A SOMEWHAT STRONGER AND MORE MOIST UPPER TROUGH CROSSES THE REGION.
TEMPERATURES WILL BE A LITTLE WARMER TODAY. OVERNIGHT LOWS WILL BE WARMER TONIGHT RANGING FROM AROUND 40 IN THE EAST TO 50 IN THE WEST. A SHORT WAVE AND ASSOCIATED COLD FRONT WILL MOVE ACROSS THE AREA ON WEDNESDAY. THE FRONT WILL KEEP TEMPERATURES A LITTLE COOLER IN THE NORTH WITH HIGHS TOPPING OUT IN THE MID 60S IN THE NORTH TO MID 70S IN THE SOUTH.
609 AM EST TUE DEC 8 2015 LOW PRESSURE DEEPENS OFF THE ATLANTIC COAST TODAY AND STAYS SOUTH OF THE GULF OF MAINE AS IT MOVES EAST NORTHEAST. HIGH PRESSURE CROSSES THE AREA WEDNESDAY.
642 AM EST TUE DEC 8 2015 LATEST SURFACE ANALYSIS SHOWS WEAK HIGH PRESSURE CENTERED OVER AL AND WEST TN AND DRIFTING EAST. A LIGHT SOUTHERLY WIND AND MOSTLY CLEAR SKIES WILL ALLOW HIGHS TO CLIMB INTO THE LOWER TO MID 60S TODAY.
955 AM EST TUE DEC 8 2015 HIGH PRESSURE WILL REMAIN OVER THE AREA TODAY THROUGH WEDNESDAY.
628 AM EST TUE DEC 8 2015 HIGH PRESSURE WILL ALLOW FOR DRY CONDITIONS ACROSS THE REGION TODAY AND TONIGHT. DRY CONDITIONS WILL BE PRESENT TODAY WITH HIGH PRESSURE IN EFFECT.
1029 AM EST TUE DEC 8 2015 HIGH PRESSURE OVER THE AREA WILL SHIFT SOUTHEAST TO CAPE HATTERAS THROUGH THIS EVENING. AN UPPER LEVEL TROUGH WILL MOVE EAST THROUGH THE AREA WEDNESDAY NIGHT. HIGH PRESSURE BUILDS SOUTH OF THE AREA FOR THE WEEKEND RESULTING IN WELL ABOVE NORMAL TEMPERATURES.
HIGH PRESSURE ACROSS THE SOUTHEAST U. HIGHS WILL BE ABLE TO REACH THE LOW TO MID 70S ACROSS THE REGION.
951 AM EST TUE DEC 8 2015 HIGH PRESSURE WILL ALLOW FOR DRY CONDITIONS ACROSS THE REGION TODAY AND TONIGHT. DRY CONDITIONS WILL BE PRESENT TODAY WITH HIGH PRESSURE IN EFFECT.
AN AREA OF WARM FRONTAL PRECIPITATION WAS EVIDENT ON REGIONAL RADAR ALONG THE WRN IDAHO BORDER WHICH THE MODELS ADVECT EAST INTO THE CNTRL MOUNTAINS THIS AFTERNOON. BUT WITH EVEN THE DEWPOINT ABOVE FREEZING THE MAIN ROADS WILL HAVE RAIN SHOWERS WITH SNOW ABOVE 6000 FT ELEVATION OR SO. THE NEXT STORM COMES IN EVEN WARMER THAN THIS LAST ONE. CONDITIONS START TURNING COLDER ON THU AND TEMPERATURES DROPPING BELOW FREEZING ON THU NIGHT JUST ABOUT EVERYWHERE.
HIGH PRESSURE AT THE SURFACE WILL SHIFT EASTWARD THROUGH THE DAY. AS THIS TROUGH AXIS AMPLIFIES. THERE MAY BE JUST ENOUGH MOISTURE IN THE LOWER LEVELS FOR SHOWERS TO DEVELOP. AS WELL AS SLIGHTLY COOLER TEMPERATURES ON WEDNESDAY.