Aikyam-Lab/Synoptic-Bench huggingface dataset:
DRIER AND WARMER CONDITIONS CAN BE EXPECTED FOR THE LATTER PART OF THE WEEK HOWEVER TEMPERATURES ACROSS EASTERN NEVADA WILL BE ON THE CHILLY SIDE TODAY AS THE SNOW BEGINS TO MELT AWAY.
204 AM EDT WED MAR 30 2016 HIGH PRESSURE WILL MOVE OVERHEAD TONIGHT.
555 AM EDT WED MAR 30 2016 HIGH PRESSURE IS ALREADY CENTERED JUST TO THE EAST OF THE REGION EARLY THIS MORNING AND WILL CONTINUE TO SLIDE TO THE SOUTHEAST TODAY.
A cold front will move through the area overnight.
622 AM EDT WED MAR 30 2016 HIGH PRESSURE OVER THE MID ATLANTIC REGION WILL GRADUALLY MOVE OFFSHORE OF THE DELMARVA THIS AFTERNOON.
516 AM EDT WED MAR 30 2016 HIGH PRESSURE WILL PROVIDE DRY WEATHER TODAY.
THE LOW WILL CONTINUE TO MOVE EASTWARD TODAY AND WILL BE OVER THE FAR NERN CORNER BY 00Z. FOR TONIGHT THE UPPER LEVEL LOW WILL MOVE EAST OF THE AREA WITH SNOW DECREASING IN THE MTNS BY EARLY EVENING. AN ACCOMPANYING COLD FRONT WILL ALSO BRING SOME MORE GUSTY NORTH WINDS ACROSS THE PLAINS THROUGH THE AFTERNOON. UPPER LEVEL RIDGING TAKES OVER WITH DRIER NORTHWEST FLOW ALOFT ACROSS THE STATE.
UPPER LEVEL LOW CONTINUES OVER THE GREAT BASIN WHILE RIDGE OF HIGH PRESSURE BUILDS OVER THE EASTERN PACIFIC AND INTO WESTERN CANADA. THIS RIDGE IS BECOMING THE DOMINATE FEATURE IMPACTING THE FORECAST AREA OVER THE COMING DAYS. TEMPERATURES WILL BE A LITTLE WARMER ON WEDNESDAY AS THE RIDGE BECOMES MORE DOMINATE.
423 AM CDT WED MAR 30 2016 ELONGATED UPPER LEVEL LOW WILL SPLIT INTO TO TWO LOBES WITH THE EASTERNMOST BEING OUR PRIMARY WEATHER MAKER FOR TODAY. COLD FRONT USHERS IN COOLER AIR /AND ATTENDANT WIND SHIFT/ THIS EVENING. A RELATIVELY WEAK AND DRY COLD FRONT WILL PUSH ACROSS THE CWA.
206 AM EDT WED MAR 30 2016 HIGH PRESSURE WILL MOVE OVERHEAD TONIGHT.
606 AM EDT WED MAR 30 2016 HIGH PRESSURE WILL MOVE OVER THE REGION WEDNESDAY. LOW PRESSURE WILL APPROACH WEDNESDAY NIGHT AND THURSDAY AND TRACK NORTH OF THE AREA THURSDAY NIGHT.
THE CWA WILL BE ON THE WEST SIDE OF A RETREATING H5 RIDGE. LOSING SOME OF ITS ENERGY TO A SHORT WAVE TROUGH THAT WILL EJECT OUT OVER THE CENTRAL HIGH PLAINS. HIGH TEMPS TODAY WILL RANGE FROM THE MID TO UPPER 80S EAST TO THE LOWER 90S WEST. LOW TEMPS TONIGHT WILL BE IN THE LOWER 70S.
LATEST MOISTURE CHANNEL IMAGERY THIS MORNING SHOWS A DEEP H5 TROUGH AND ASSOCIATED CLOSED UPPER LOW OVER THE GREAT BASIN. LOCALLY HEAVY RAIN IN EXCESS OF THREE INCHES WILL BE POSSIBLE TODAY AND TONIGHT WITH THE HIGHEST AMOUNTS POSSIBLE OVER THE SOUTH. ACTUAL COLD FRONT WILL MOVE INTO WESTERN ARKANSAS AROUND DAY BREAK THURSDAY AND REACH THE MISSISSIPPI RIVER BY THE END OF THE DAY.
HIGH PRESSURE CRESTS ACROSS THE REGION WEDNESDAY MORNING WITH TRANQUIL CONDITIONS. WILL SEE DEVELOPING SOUTH WINDS 5-10 MPH WEDNESDAY AFTERNOON (LOCALLY A BIT HIGHER WITH CHANNELING IN THE CHAMPLAIN VALLEY) AS RIDGE AXIS SHIFTS EAST OF VERMONT.
423 AM CDT WED MAR 30 2016 A strong upper low will cross the Rockies today moving onto the Central Plains this evening.
ANOTHER NICE DAY FOR WEDNESDAY AS HIGH PRESSURE MOVES EAST OFF THE COAST.
THE UPPER LEVEL LOW PRESSURE SYSTEM OVER SOUTHWEST UTAH THIS MORNING WILL WEAKEN AS IT CONTINUES TO DRIFT SOUTH TODAY. HIGH PRESSURE ALOFT ALONG THE WEST COAST WILL SHIFT EAST INTO THE GREAT BASIN FOR THE UPCOMING WEEKEND.
WEDNESDAY IS STILL EXPECTED TO BE WARMER WITH ONLY ISOLATED/SCATTERED SHOWERS. CLOUDS AND PRECIPITATION ASSOCIATED WITH LOW PRESSURE IN UT/WY WILL CONTINUE TO DECREASE ACROSS SW MT TONIGHT AS A DRIER NORTHERLY FLOW ALOFT DEVELOPS ACROSS THE REGION LATE TONIGHT THROUGH MOST OF THE DAY WEDNESDAY.
AND THEN PASSAGE OF A COLD FRONT ON THURSDAY. MID-LEVEL (AROUND 700MB) TROUGH ACROSS THE SOUTHERN FA WILL SLOWLY PROPAGATE SOUTH/SOUTHEAST THROUGH THE DAY. THE PATTERN GETS MUDDLED ON THURSDAY AS SOME GUIDANCE DEPICTS LOW CLOUDS AND DRIZZLE/SNOW WHILE OTHERS ARE CLEAR AND WARMER.
1201 AM CDT WED MAR 30 2016 THE WARM FRONT HAS SHIFTED N TO A DFW. /ISSUED 937 PM CDT TUE MAR 29 2016/ WARM FRONT CURRENTLY LIFTING NORTH ACROSS PORTIONS OF EAST TEXAS AND NORTH LOUISIANA THIS EVENING.
503 AM EDT WED MAR 30 2016 HIGH PRESSURE WILL MOVE OVERHEAD TONIGHT.
LOW PRESSURE WAS LOCATED OVER THE NORTHWEST CORNER OF KANSAS AT 06Z WITH TROUGH EXTENDING NORTH FROM THE LOW ACROSS WESTERN NEBRASKA INTO CENTRAL SOUTH DAKOTA. ALTHOUGH THE SEVERE POTENTIAL WILL MOVE SOUTHEAST OF THE AREA EARLY THIS EVENING THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE NIGHT AND INTO THURSDAY AS A COUPLE OF STRONG SHORT WAVE TROUGHS MOVE THROUGH THE REGION BEHIND THE FRONTAL SYSTEM.
CONTINUING THE LOW CLOUDS THROUGH A LARGE PART OF THE DAY. SURFACE PRESSURE ACROSS THE WESTERN UNITED STATES AND HIGH PRESSURE ACROSS THE EASTERN U. PATCHY TO AREAS OF FOG WILL DEVELOP LATE TONIGHT INTO EARLY WEDNESDAY AS WINDS DIMINISH AND THE WARM FRONT ACROSS SOUTH TX LIFTS NORTHWARD TONIGHT.
Surface dewpoints in the lower 50s have yielded an extensive deck of stratus this morning, that will erode quickly from west to east through the early morning hours. Closed 500 mb cyclone near 544 dm expected to be near far NW Kansas around 7 pm this evening. Cold frontal passage expected this evening, veering winds around to strong and gusty from the NW. Wraparound and NW winds diminish by 7 am Thursday, allowing for much cooler lows in the 30s. Temperatures near or just below freezing expected west of Dodge City at sunrise Thursday. Isolated thunderstorms expected to form on the low level jet east of the terminals by 12z. Strong mid level cyclone ejects into SW Nebraska Wednesday afternoon, dryslotting SW KS.
257 AM EDT WED MAR 30 2016 STRONG RIDGE OF HIGH PRESSURE OVER THE APPALACHIANS HAS KEPT OUR WEATHER QUIET OVERNIGHT WITH CLEAR SKIES. RIDGES ARE HOLDING IN THE LOW TO MID 40S WITH SOME LIGHT EASTERLY WINDS. WILL GO WITH A GRADIENT IN POPS FROM WEST TO EAST ON THURSDAY WITH THE LOWEST IN THE EAST. THE LOWER POPS IN THE EAST SEEMED IN ORDER. AS A COLD FRONT REMAINS WELL TO OUR WEST AND NO WAVES CROSSING THE AREA. BETTER RAIN/STORM CHANCES WILL COME WITH THE COLD FRONT THURSDAY NIGHT. HAVE TRIMMED BACK QPF AND GONE WARMER WITH HIGHS (INTO THE LOWER 70S).
UPPER LOW GRADUALLY SETTLING SEWD AND AWAY FROM OUR AREA TODAY AS A HIGH-AMPLITUDE PACIFIC UPPER RIDGE EDGES INLAND ACROSS WA.
HIGH PRESSURE STILL IN CONTROL FOR TODAY BUT SHIFTING EAST. BREEZY CONDITIONS CAN BE EXPECTED ACROSS THE HIGHER ELEVATIONS THROUGH THE NIGHT. LOWS WILL BE IN THE LOW 50S NORTH TO NEAR 60 SOUTH.
THE COLD CORE OF THE UPPER LEVEL LOW WILL FINALLY MOVE OVER OVER INTERIOR SOUTHWEST CALIFORNIA TODAY AS THE LAST LITTLE SHORT WAVE DROPS SOUTH THROUGH LA AND ORANGE COUNTIES. MOSTLY SUNNY AND COOL WEATHER IS EXPECTED DURING THE DAY THURSDAY AS THE UPPER LOW CONTINUES TO MOVE SOUTHEAST.
PRECIPITATION MAY START OUT AS RAIN AS SURFACE TEMPERATURES REMAIN ABOVE FREEZING THROUGH THE EVENING HOURS. ANY SNOW THAT DOES FALL WILL LIKELY MELT BY THE AFTERNOON AS TEMPERATURES ONCE AGAIN CLIMB ABOVE FREEZING.
A BLOCKING RIDGE WILL SET UP JUST OFF THE BRITISH COLUMBIA COAST TODAY WHILE THE UPPER TROUGH THAT BROUGHT THE GUSTY WINDS TO THE AREA YESTERDAY SETTLES INTO THE SOUTHWEST UNITED STATES.
LOW PRESSURE WILL LINGER OVER THE AREA THROUGH THIS AFTERNOON WITH SHOWER CHANCES PRIMARILY TIED TO THE HIGHER TERRAIN.
A DEEP UPPER TROUGH LIFTS NE OF OUR REGION OVERNIGHT AND DEEP-LAYER THICKNESSES BEGIN TO RISE.
AS WEAK COLD AIR ADVECTION IS NOTED FROM A HIGH PRESSURE SYSTEM LOCATED OVER EASTERN TEXAS. SOME PATCHY FROST AND NEAR FREEZING TEMPERATURES WILL BE NOTED IN THE USUAL COOLER SPOTS NORTH OF THE I-10 CORRIDOR.
UPPER RIDGE MOVES ACROSS DAKOTAS HOWEVER SOME MID/UPPER LEVEL MOISTURE WILL KEEP SKIES MOSTLY CLOUDY. WITH MUCH WARMER OVERNIGHT LOWS TOMORROW NIGHT.
335 PM MST FRI DEC 18 2015 A RIDGE HAS BEGUN TO PUSH INTO THE CWA BRINGING WITH IT DRY CONDITIONS OVER THE REGION. THE SNOWFALL IN THE SOUTHERN AND NORTHWESTERN PORTIONS OF OUR CWA HAS IMPACTED THE HIGH TEMPERATURES TODAY. THE REGION WILL CONTINUE TO BE DRY INTO SATURDAY AS THE HIGH PLAINS GETS DOMINATED BY THE RIDGE AND HAS WARMER SOUTHWEST WINDS ALONG WITH DOWNSLOPE FLOW.
HOWEVER OBS WERE STILL SHOWING STRONG SPEEDS IN MANY LOCATIONS AT 3 PM SO EXTENDED THE HIGH WIND WARNING THROUGH 6 PM. ALTHOUGH THE LOWER ELEVATIONS IN THE NEBRASKA PANHANDLE ARE STILL IN THE 20S.
AND COOLER TEMPERATURES IN NORTHWESTERLY FLOW THROUGH TONIGHT.
THE COLD FRONT HAS MADE PROGRESS TO S FL AND LOCAL DEWPOINT AT MLB HAS FALLEN 23 DEGREES SINCE 3 PM.
VFR NEXT 24 HOURS WITH HIGH PRESSURE MOVING INTO MID TN.
STRONG COLD FRONT WILL MOVE THROUGH THE AREA BRINGING PRECIPITATION TONIGHT AND SATURDAY.
NARROW HIGH PRESSURE RIDGE OVER THE EASTERN DAKOTAS THIS EVENING WILL CONTINUE TO MOVE EAST WITH WINDS TURNING SOUTH. WITH HIGHS ONLY IN THE LOW TEENS THIS AFTERNOON TEMPS WILL NOT HAVE FAR TO GO TO DROP BELOW ZERO THIS EVENING. WARMER AIR WILL BE IN PLACE ON SATURDAY WITH AREAS SOUTH OF PIERRE REACHING TEMPS WELL ABOVE FREEZING.
850 PM CST FRI DEC 18 2015 HIGH PRESSURE CONTINUES TO KEEP SKIES CLEAR OVER THE AREA. /ISSUED 542 PM CST FRI DEC 18 2015/ DRY NORTHWESTERLY FLOW ALOFT AND BUILDING HIGH PRESSURE WILL KEEP SKIES CLEAR AND WINDS LIGHT AT ALL TAF SITES THROUGHOUT THE AVIATION FORECAST PERIOD.
443 PM MST FRI DEC 18 2015 THE HIGH PRESSURE RIDGE OVER THE REGION THIS AFTERNOON WILL SHIFT EAST OF THE CONTINENTAL DIVIDE TONIGHT. ADVECTION OF DRY AIR FROM THE DESERT SOUTHWEST WILL RESULT IN A BREAK IN SNOW SHOWERS OVER THE HIGHER TERRAIN ALONG WITH INCREASED SUNSHINE SATURDAY AND MOSTLY CLEAR SKIES DURING THE TONIGHT. CLOUDS INCREASE AND SNOW CHANCES RETURN TO NORTHEAST UTAH LATE SATURDAY NIGHT AS A LOW PRESSURE TROUGH OFF THE WEST COAST SWEEPS INLAND.
SURFACE ANALYSIS THIS AFTERNOON SHOWS DEWPOINTS RANGING FROM THE LOWER 20S WEST TO THE MID 30S EAST.
542 PM CST FRI DEC 18 2015 DRY NORTHWESTERLY FLOW ALOFT AND BUILDING HIGH PRESSURE WILL KEEP SKIES CLEAR AND WINDS LIGHT AT ALL TAF SITES THROUGHOUT THE AVIATION FORECAST PERIOD.
HIGH PRESSURE SETTLING IN OVER EASTERN TEXAS GUARANTEES THAT OVERNIGHT (INTERIOR) WINDS WILL WEAKEN TO BELOW 5 KNOTS. THE WEEKEND WILL START OFF VERY NICE WITH THE HIGH STATIONING ITSELF OVER THE SOUTHEASTERN U.
VERY LIGHT NRLY WINDS WILL SUBSIDE UNDER HIGH PRESSURE TONIGHT AND GRADUALLY TURN TO THE S IN THE MORNING BUT REMAIN VERY LIGHT.
A COLD FRONT CONTINUES TO SLOWLY MOVE THROUGH SONOMA COUNTY THIS AFTERNOON. A COLD FRONT CONTINUES TO SLOWLY WORK ITSELF DOWN THE COAST THIS AFTERNOON. THE SLOW MOVING COLD FRONT IS PROVIDING BENEFICIAL RAIN TO SONOMA COUNTY WITH SEVERAL STATIONS REPORTING OVER AN INCH OF RAIN IN THE PAST 24 HOURS.
This will bring a series of upper level troughs onto the west coast and across the region every few days. The next upper level trough will come onto the Pacific coast tonight and across the central U.
WHILE UPPER TROUGHING PUSHES INTO THE WESTERN STATES. IN THE LOWER-MIDDLE 20S.
604 PM CST FRI DEC 18 2015 HIGH PRESSURE CENTERED ACROSS THE NORTHERN PLAINS WITH A TROUGH/WARM FRONT ALONG THE FRONT RANGE. UPPER LEVEL BROAD RIDGE ACROSS THE ROCKIES WITH A TROUGH OVER THE GREAT LAKES AND ANOTHER ONE ALONG THE PACIFIC WEST COAST. WITH THE LOWER TO MID 30S ELSEWHERE. THE NORTHERN PLAINS HIGH PRESSURE WILL DRIFT ACROSS EASTERN NEBRASKA THIS EVENING. IN ASSOCIATION WITH THE HIGH PRESSURE. OVERNIGHT THE TROUGH ALONG THE FRONT RANGE WILL LIFT TO THE NORTHEAST AS A WARM FRONT AND WILL HALT THE FALL OF TEMPS. FOR TOMORROW THE RIDGE AXIS WILL BE OVERHEAD.
900 PM MST FRI DEC 18 2015 A RIDGE HAS BEGUN TO PUSH INTO THE CWA BRINGING WITH IT DRY CONDITIONS OVER THE REGION. THE SNOWFALL IN THE SOUTHERN AND NORTHWESTERN PORTIONS OF OUR CWA HAS IMPACTED THE HIGH TEMPERATURES TODAY. THE REGION WILL CONTINUE TO BE DRY INTO SATURDAY AS THE HIGH PLAINS GETS DOMINATED BY THE RIDGE AND HAS WARMER SOUTHWEST WINDS ALONG WITH DOWNSLOPE FLOW.
UPPER FLOW IS IN THE PROCESS OF BACKING FROM THE NORTHWEST TO WEST AS BROAD SCALE EASTERN CONUS TROUGH MARCHES FARTHER EAST. AND HIGH AMPLITUDE UPSTREAM RIDGE AXIS MOVES FROM THE ROCKIES INTO THE HIGH PLAINS BY EARLY SATURDAY. WEAK SFC-850 MB TROUGH WILL KEEP LIGHT TO MODERATE S-SWLY WINDS ACROSS THE AREA. AND LOW LEVEL THERMAL RIDGING WILL RESULT IN MILD DAY SATURDAY WITH BRIEF GUSTY WINDS IN THE AFTERNOON.
HIGH PRESSURE OVER ARIZONA WILL SLIDE TO THE EAST ON SATURDAY AS A COLD FRONT APPROACHES FROM THE WEST.
Looking at the big picture across the country, a modest low amplitude upper level ridge is moving into the Plains States today, and while the clear skies helped take the edge off the cool temperatures today the southerly wind under the ridge will do a bit more to lift temperatures for Saturday into the 40s to around 50. Of course, with the warmer temperatures will come a bit of moisture from the Gulf coast.
COLD FRONT CURRENT THROUGH KAPF AND APPROACHING KPBI THIS EVENING, THOUGH GUSTY NW WINDS HAVE ALREADY OVERSPREAD MOST OF THE REGION.
SIGNALING THAT THE COLD FRONT HAS MOVED INTO THE FLORIDA STRAITS. WITH COOLER AIR AT THE SURFACE AND DRIER LOW LEVEL AIR UP TO ABOVE 700 MB. DRIER AIR HAS FILLED INTO THE REGION IN THE WAKE OF THE COLD FRONT THAT PASSED THROUGH EARLIER TODAY.
HIGH PRESSURE WILL THEN SETTLE OVER IOWA REDUCING WINDS AND CLEARING THE SKY. RIDGE OF HIGH PRESSURE WILL BE ACROSS CENTRAL IOWA EARLY SATURDAY MORNING AND WILL LEAD TO A COLD START FOR THE DAY. WARM ADVECTION WILL SPREAD ACROSS THE STATE AS THE RIDGE SHIFTS TO THE EAST AS A MUCH LARGER HIGH PRESSURE SYSTEM BECOMES ESTABLISHED ACROSS THE OHIO VALLEY AND INTO THE SOUTHEAST CONUS.
SUB-ZERO LOWS TONIGHT CENTRAL AND A WARMER DAY SOUTHWEST ON SATURDAY HIGHLIGHT THE SHORT TERM FORECAST.
COLD FRONT SLOWLY MAKING ITS WAY THROUGH SOUTH FLORIDA THIS EVENING WITH RADAR SHOWING AN ABUNDANCE OF LIGHT TO MODERATE RETURNS THAT ARE MOSTLY CLOUDS OR VERY LIGHT PRECIP. COOL AND DRY AIR ADVECTION HAS ALREADY BEGUN ACROSS S FL WITH TEMPS AND DEWPOINTS DOWN INTO THE LOW-MID 60S BEHIND THE FRONT ACROSS COLLIER, GLADES, AND HENDRY AND DEWPOINTS IN THE 40S AND 50S NOT FAR BEHIND IN CENTRAL FL. COLD FRONT CURRENT THROUGH KAPF AND APPROACHING KPBI THIS EVENING, THOUGH GUSTY NW WINDS HAVE ALREADY OVERSPREAD MOST OF THE REGION.
THIS EVENING SHOULD SEE SOME LINGERING STRATOCU DECK IN THE FAR NORTH GIVEN A SHALLOW COLUMN OF LOW LEVEL MOISTURE AND THE PASSING OF A VORT MAX PER THE UPPER TROUGH AXIS. BUFR SOUNDINGS INDICATING DRIER DEWPTS IN BOUNDARY LAYER SO SUPPORTING THE LOWER SFC VALUES IN THE LATEST GUIDANCE BLEND.
WEST WINDS CONTINUE TO GUST TO NEAR 20 KTS ACROSS THE MID-SOUTH AS CANADIAN HIGH PRESSURE BUILDS IN FROM THE WEST. THE UPPER LEVEL PATTERN OVER THE CONUS IS CHARACTERIZED BY A LARGE TROUGH OVER THE EASTERN US WITH A RIDGE OVER THE WEST.
909 PM CST FRI DEC 18 2015 HIGH PRESSURE CENTERED SOUTHEAST OF OKLAHOMA WILL CONTINUE TO MOVE EAST.
938 PM EST FRI DEC 18 2015 A BROAD AREA OF LOW PRESSURE ACROSS EASTERN CANADA LIFTS NORTHEAST THROUGH WEEKEND WHILE HIGH PRESSURE BUILDS IN FROM THE SOUTHWEST.
HIGH PRESSURE OVER THE REGION TONIGHT WILL MAINTAIN NORTHEAST WINDS THROUGH LATE TONIGHT. HIGH PRESSURE MOVES EAST ON SATURDAY RESULTING IN MODERATE SOUTHEAST WINDS BY SATURDAY AFTERNOON.
At 20Z an upper trough was over the Great Lakes and the OH river valley. A second upper trough was just off the Pacific Northwest Coast. In between the two troughs, ridging was found over the Rockies. At the surface, a general high pressure system was influencing the Great Plains with any hint of low level moisture well off the gulf coast. If the boundary layer mixes deeper, surface temps could be warmer.
THE RIDGE OF HIGH PRESSURE WAS OVER THE SOUTHEAST U. A LARGE AREA OF HIGH PRESSURE WILL KEEP VFR CONDITIONS FOR BOTH KMSL AND KHSV THRU THE FCST PERIOD.
527 PM CST FRI DEC 18 2015 A strong upper level trof was over the western Great Lakes into IL this afternoon. High pressure will pass across Illinois on Saturday, setting up a day of lighter winds and mostly sunny skies. Winds will start out NW, but become southerly once the ridge axis passes east of Illinois.
1046 PM EST FRI DEC 18 2015 A DEEP BUT FAST MOVING UPPER TROUGH IS MOVING THROUGH THE REGION BRINGING A TOUCH OF WINTER.
This should result in warmer overnight lows. Forecast low temperatures are mainly in the low/mid 30s across the Big Country and Concho Valley, with upper 20s and lower 30s anticipated across the I-10 corridor and northwest Hill Country.
MEANWHILE, CLOUDS WERE HOLDING TEMPERATURES IN THE LOWER AND MIDDLE 30S ALONG THE CUMBERLAND PLATEAU.
957 PM EST FRI DEC 18 2015 A DEEP BUT FAST MOVING UPPER TROUGH IS MOVING THROUGH THE REGION BRINGING A TOUCH OF WINTER.
Cold front and associated precipitation has been slow to move today, but has started making some southeast progress in the last few hours.
HIGH PRESSURE OVER THE REGION TONIGHT WILL MAINTAIN NORTHEAST WINDS THROUGH LATE TONIGHT. HIGH PRESSURE MOVES EAST ON SATURDAY RESULTING IN MODERATE SOUTHEAST WINDS BY SATURDAY AFTERNOON. RATHER BENIGN CONDITIONS WILL CONTINUE OVER SOUTH TEXAS THROUGH TOMORROW AS A RIDGE OF HIGH PRESSURE REMAINS PARKED OVER THE AREA. HIGHS WILL CLIMB INTO THE LOWER TO MIDDLE 70S ACROSS THE REGION TOMORROW. THE RIDGE OF HIGH PRESSURE WILL BEGIN TO PUSH TO THE EAST.
308 PM MST FRI DEC 18 2015 THE HIGH PRESSURE RIDGE OVER THE REGION THIS AFTERNOON WILL SHIFT EAST OF THE CONTINENTAL DIVIDE TONIGHT. ADVECTION OF DRY AIR FROM THE DESERT SOUTHWEST WILL RESULT IN A BREAK IN SNOW SHOWERS OVER THE HIGHER TERRAIN ALONG WITH INCREASED SUNSHINE SATURDAY AND MOSTLY CLEAR SKIES DURING THE TONIGHT. CLOUDS INCREASE AND SNOW CHANCES RETURN TO NORTHEAST UTAH LATE SATURDAY NIGHT AS A LOW PRESSURE TROUGH OFF THE WEST COAST SWEEPS INLAND.
HIGH PRESSURE WILL PERSIST OVER THE INTERMOUNTAIN WEST THROUGH TONIGHT AND MOST OF SATURDAY.
WINDS CONTINUE TO DIMINISH AS HIGH PRESSURE BUILDS INTO THE REGION.
/ISSUED 316 PM CST FRI DEC 18 2015/ A 1030MB HIGH PRESSURE CENTER REMAINS AT TEMPLE TEXAS. WHICH MAY REACH THE FREEZING MARK AROUND MIDNIGHT WITH CALM WIND AND STILL PERHAPS A RISING BAROMETER. THE MODELS ARE A TAD QUICKER LOWERING PRESSURES BY DAYBREAK FOR THE ENTIRE AREA WITH A WARMER TREND UNFOLDING ON SOUTHERLY WINDS. EVEN WARMER SOUTHERLY FLOW BY EARLY CHRISTMAS WEEK WILL OPEN UP THE GULF AS A TROUGH APPROACHES.
CHATTANOOGA AIRPORT, TN 27 52 30 55 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 26 47 28 53 / 0 0 0 0 OAK RIDGE, TN 25 49 28 54 / 0 0 0 0 TRI CITIES AIRPORT, TN 22 43 24 51 / 10 0 0 0.
SFC METEOGRAMS CLEARLY SHOWING A QUITE GENEROUS WARMING TREND THRU THIS WEEKEND IN RESPONSE TO A PASSING LOW AMPLITUDE UPPER LEVEL RIDGE/INCREASING THKNS OVER THE CNTRL PLAINS. GFS/ECM SHOW A RELATIVELY WEAK COLD FRONT FOR THIS TIME OF THE YEAR PUSHING DEEP INTO THE CNTRL PLAINS.
800 PM PST FRI DEC 18 2015 A COLD FRONT WILL MOVE THROUGH LATE SATURDAY AFTERNOON THROUGH SATURDAY EVENING BRINGING GUSTY WEST WINDS IN THE MOUNTAINS AND DESERTS AND SHOWERS MAINLY FOR THE HIGH DESERTS AND OVER AND WEST OF THE MOUNTAINS.
Showers continue to move through the region this afternoon and many valley locations remain below freezing (Missoula Valley being one) so patchy freezing rain is still possible. Snow levels will lower through the evening and overnight with precipitation expected with a slow moving cold front. There is good model agreement that a wide band of snow will develop with the cold front, which will move from north to south tonight through Saturday.
THE AIRMASS IN THE MOUNTAINS SHOULD BE DRY ENOUGH AND THE RIDGING ALOFT SUBSIDENT ENOUGH TO PRECLUDE ANY SNOW SHOWERS FROM DEVELOPING. BUT ALSO CLOUDS STILL HANGING OVER THE RIDGES. AN UPPER LEVEL RIDGE WILL SHIFT EAST OF THE FORECAST AREA AS THE NEXT TROUGH DIGS INTO THE SOUTHWESTERN U.
/issued 147 PM CST FRI DEC 18 2015/ Flat upper ridging over the region today will transition to southwesterly Saturday ahead of the next ua trough.
Clear skies and light winds overnight will allow temperatures to drop to or below freezing across much of the forecast area Saturday morning. The area of high pressure will shift east of the region tomorrow, increasing southerly flow across eastern Oklahoma and western Arkansas for the weekend.
WITH CONTINUED THINNING AND PROGRESSION OF THE HIGH CLOUDS THROUGH THE NIGHT. A COLD NNW DRAINAGE FLOW WILL KEEP WINDS IN THE 5-10 MPH RANGE OVERNIGHT WITH A MUCH COLDER AND DRIER AIRMASS ADVECTING LOWS TEMPS INTO THE LOW/MID 30S INLAND GENERALLY ALONG AND WEST OF A JESUP TO GAINESVILLE LINE SUPPORTING A LIGHT FREEZE. THE FREEZING TEMPS COMBINED WITH THE ELEVATED WINDS WILL RESULT IN WIND CHILLS IN THE MID 20S EARLY SAT MORNING. FARTHER EAST ALONG THE ST JOHNS RIVER BASIN AND ATLANTIC COAST MORE MILD LOWS IN THE LOWER 40S ARE EXPECTED WITH RESULTANT WIND CHILLS IN THE LOW/MID 30S.
AS THE SHORT WAVE AND COLD FRONT MOVE THROUGH. CREATING SOME INSTABILITY IN THE LOWEST KILOMETER. OTHERWISE AN UPPER RIDGE BUILDS ACROSS THE WESTERN U.
ALONG A WAVY COLD FRONT. TRAPPED COLD AIR THIS EVENING BETWEEN ONTARIO AND COUNCIL /WHERE HIGHS STRUGGLED TO GET ABOVE FREEZING/ STILL COULD LEAD TO SPOTS OF FREEZING RAIN SO SLIGHT CHC THERE LOOKS GOOD. MOUNTAIN SNOW AND VALLEY RAIN WILL CONTINUE OVER THE REGION SATURDAY AS A PACIFIC COLD FRONT MOVES OVER THE FORECAST AREA.
THE UPPER LOW AND UPPER TROUGH THAT WERE IMPACTING THE AREA ARE WELL OFF TO THE NORTHEAST WITH RIDGING BUILDING IN FROM THE WEST.
WITH HIGHS ONLY IN THE LOW TEENS THIS AFTERNOON TEMPS WILL NOT HAVE FAR TO GO TO DROP BELOW ZERO THIS EVENING. WARMER AIR WILL BE IN PLACE ON SATURDAY WITH AREAS SOUTH OF PIERRE REACHING TEMPS WELL ABOVE FREEZING.
The upper level trough axis will continue to shift eastward this afternoon and evening.
241 AM EST MON MAR 7 2016 AN UPPER LEVEL TROUGH/LOW DIGGING SOUTH SOUTHEAST ACROSS CALIFORNIA TODAY WILL PUSH INTO BAJA CALIFORNIA TONIGHT. WITH UPPER LEVEL RIDGING BUILDING ACROSS THE EASTERN CONUS. HIGH PRESSURE WILL BUILD EASTWARD INTO THE WESTERN ATLANTIC TO THE EAST OF THE CAROLINAS. UPPER RIDGE WILL BUILD ALONG THE EAST COAST WHICH WILL PRODUCE A WARMING TREND WITH ABOVE NORMAL TEMPERATURES.
High pressure centered off the southeast coast will dominate across the area at the surface today. Meanwhile upper level ridging strengthens across the southeast today.
HIGH PRESSURE WILL REMAIN ANCHORED OFFSHORE THE SOUTHEAST U.
318 AM EST MON MAR 7 2016 A TROUGH OF LOW PRESSURE WILL CROSS THE REGION TODAY AND WILL SHIFT OFFSHORE THIS EVENING FOLLOWED BY A WEAK RIDGE OF HIGH PRESSURE. A WARM FRONT WILL LIFT NORTHEAST THROUGH THE REGION TUESDAY AFTERNOON AND TUESDAY NIGHT.
An early morning surface analysis showed high pressure off the NC coast while a couple waves of low pressure were across the central Plains. The southerly flow in between, combined with zonal to slight ridging aloft, has kept readings mild compared to recent mornings. Look for highs to reach the low/mid 70s despite having mostly cloudy to overcast skies at times.
1255 AM EST MON MAR 7 2016 HIGH PRESSURE WILL BUILD OVER THE AREA TONIGHT AND MONDAY THEN MOVE OFFSHORE TUESDAY WHILE CONTINUING TO INFLUENCE THE WEATHER THROUGH THE END OF THE WEEK.
We are expecting lows to range from the low 50s out east to around 60 in the west.
With high pressure in place, skies will be mostly clear with lows ranging from the lower 40s inland to the lower 50s at the coast. A quiet and warm stretch of weather is expected through the short term period as deep layer ridging builds just to the east of the region. With southeasterly flow expected to start on Monday, low level moisture will be on the increase, with dewpoints getting back up into the lower 50s. Afternoon highs will be warming each day, in the low to mid 70s on Monday and in the mid to upper 70s on Tuesday. Overnight lows will be considerably warmer as well, generally in the low to mid 50s.
NO CHANGES WERE MADE TO THE LOW TEMPERATURE FORECAST FOR TONIGHT.
THIS EVENING THROUGH MONDAY NIGHT UPPER LEVEL TROF CURRENTLY OVER CA WILL MOVE NORTHEASTWARD INTO THE CENTRAL ROCKIES BY MONDAY MORNING. LEE SURFACE TROF ACROSS MT-EASTERN WY WITH GUSTY SOUTH WINDS OVER NORTHEASTERN WY. TROF WILL MOVE EASTWARD TONIGHT. AS UPPER TROF DEEPENS OVER THE CENTRAL ROCKIES. BUT COOLER TEMPERATURES WILL MOVE INTO WESTERN SD MONDAY NIGHT.
437 AM EST MON MAR 7 2016 A SIGNIFICANT WARMING TREND IS EXPECTED INTO TUESDAY AS SOUTHWEST FLOW INCREASES IN ADVANCE OF A COLD FRONT. HIGHS WILL SOAR WELL INTO THE MIDDLE 50S ACROSS SOUTHERN LOWER MICHIGAN TO THE LOWER 60S ACROSS CENTRAL INDIANA LATER THIS AFTERNOON. A WEAK WARM FRONT MAY BRING SCATTERED LIGHT RAIN SHOWERS THROUGH THE AREA TODAY.