Aikyam-Lab/Synoptic-Bench huggingface dataset:
1033 AM EDT THU MAR 24 2016 A STATIONARY FRONT, ACROSS THE REGION, WILL LIFT NORTH TODAY AS A WARM FRONT. TONIGHT AND FRIDAY, A COLD FRONT WILL BRING RAIN SHOWERS. THE SURFACE WARM FRONT IS BEGINNING TO LIFT NORTHEASTWARD, ALTHOUGH IT WILL BE SLUGGISH TO DO SO ACROSS OUR NORTHERN AND EASTERN ZONES, WITH COLDER AIR STUBBORNLY HOLDING ON FOR A TIME THIS AFTERNOON. TEMPERATURES STILL JUST ABOVE FREEZING WITH LIGHT RAIN. COLD FRONT MOVES THROUGH THE CWA FRIDAY MORNING.
DEWPOINTS STILL LOOK LIKE THEY WILL HOLD IN THE LOW TO MID 40S THIS AFTERNOON ACROSS NETN AND SWVA. CHATTANOOGA AIRPORT, TN 70 45 65 41 / 80 80 10 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 70 45 62 40 / 80 80 10 10 OAK RIDGE, TN 69 45 62 39 / 80 80 10 10 TRI CITIES AIRPORT, TN 71 45 62 36 / 40 80 10 10.
/ISSUED 422 AM CDT THU MAR 24 2016/ MONITORING THE RADAR AS A LINE OF THUNDERSTORMS JUST AHEAD OF AN APPROACHING COLD FRONT MOVE INTO OUR WESTERN COUNTIES. OVERALL BROAD CENTRAL CONUS TROUGHING WILL KEEP SOUTHWESTERLY FLOW OVER TEXAS GOING INTO THE WEEKEND.
1132 AM CDT THU MAR 24 2016 THE COLD FRONT IS APPROACHING THE MISSISSIPPI RIVER AT THIS TIME. DEWPOINTS WERE RUNNING ABOUT TEN DEGREES COOLER. THE AFOREMENTIONED COLD FRONT WILL TRACK THROUGH THE MIDSOUTH. WITH DEWPOINTS FALLING TO AT OR BELOW FREEZING TONIGHT.
845 AM EDT THU MAR 24 2016 A COLD FRONT CROSSES OVERNIGHT TONIGHT.
A COLD FRONT WILL PUSH ACROSS THE SOUTHEAST AND BE STALL NORTH OF THE REGION FRIDAY MORNING. SOUTH TO SOUTHEAST WINDS WILL GRADUALLY INCREASE AS A COLD FRONT APPROACHES AND THEN STALLS OVER THE AREA THIS WEEKEND.
Winds will relax this evening as high pressure settles over the region. with the trailing cold front not far behind.
522 AM MDT THU MAR 24 2016 EARLY MORNING WV IMAGERY AND RAP UPPER LEVEL ANALYSIS SHOWS CLOSED UPPER LOW CENTERED OVER NORTHEAST KS. HOWEVER LOCATIONS IN OUR NORTH/NORTHWEST MAY STRUGGLE TO REACH THE LOW 40S IF SNOW PACK LIMITS DIURNAL HEATING. HOWEVER LEE TROUGH BEGINS TO DEEPEN AS ANOTHER FRONT APPROACHES THE REGION WITH INCREASING BL WINDS. I LEANED LOW TEMP FORECAST TOWARDS 2M GUIDANCE (WARMER BLENDS) AS MIXING MAY PREVENT BETTER RADIATIONAL COOLING.
A COMPLEX UPPER LEVEL TROUGH AXIS IS SWINGING THROUGH THE CENTRAL AND SOUTHERN PLAINS. THE LOWERING HEIGHTS IN THE MID-UPPER LEVELS HAS INTRODUCED A GOOD DOSE OF VEERING AND WARM AIR ADVECTION IN THE LOWER TROPOSPHERE ACROSS THE WESTERN CARIBBEAN. MAYBE THE 'WARM FRONT' HAS PUSHED NORTH OF THE KEYS AND WE WILL NOW GET INTO A STABLE WEDGE INSTIGATED BY THE CUBAN CHINOOK? WE WILL MAKE A DECISION IN A AN HOUR OR TWO TO REDUCE RAIN CHANCES. A BROAD HIGH PRESSURE SYSTEM WILL PERSIST ACROSS THE WESTERN NORTH ATLANTIC AND FLORIDA PENINSULA THIS AFTERNOON.
COOLER DRIER AIR CONTINUES TO SURGE INTO THE REGION IN THE WAKE OF THE COLD FRONT WHICH IS NOW BEYOND 60NM OFFSHORE.
928 AM PDT THU MAR 24 2016 SUNNY SKIES AND WARM CONDITIONS WILL PREVAIL TODAY WITH HIGH TEMPERATURES 2-8 DEGREES F WARMER THAN YESTERDAY.
THE WINDS ARE SOUTH AT 20 KT IN THE LOWER LEVELS INCREASING AND BECOMING WESTERLY WITH A 90 KT JET AT 250 MB. THE SOUTHERLY FLOW MAY ALSO LEAD TO SOME SEA FOG OVER THE COOLER WATER AREAS PRIMARILY NORTH OF TAMPA BAY.
841 AM EDT THU MAR 24 2016 HIGH PRESSURE RIDGING INTO THE FORECAST AREA FROM THE ATLANTIC WILL WEAKEN TODAY AHEAD OF AN APPROACHING COLD FRONT. THE COLD FRONT WILL CROSS THE AREA FRIDAY AND REMAIN NEAR THE COAST THROUGH THE WEEKEND. UPPER TROUGH OVER THE CENTRAL CONUS. WITH WEAK UPPER RIDGE OFF THE SE COAST. WITH COLD FRONT CURRENTLY PUSHING EAST THROUGH THE LOWER MISSISSIPPI VALLEY. COLD FRONT WILL TRACK EAST TOWARDS OUR FA AND SLOW DOWN.
808 AM EDT THU MAR 24 2016 RAIN CHANCES WILL INCREASE FROM THE WEST LATE TODAY WITH THE APPROACH OF A COLD FRONT. ONLY CHANGES FOR THE POST DAWN UPDATE WERE ADJUSTMENTS TO HOURLY TRENDS AND AN OVERALL SMOOTHING OF THE HIGH TEMP FORECAST FOR TODAY GIVEN DEEP MIXING AND WARM ADVECTION. MOIST ADVECTION AND A DEEP MIXING LAYER WILL SUPPORT WIND GUSTS OF 25-30 KNOTS THIS AFTERNOON AND WILL FUEL INCREASING POPS CHCS WITH THE ADVANCE OF THE SYSTEMS COLD FRONT LATE THIS AFTN INTO THE EVE. COLD FRONT WILL BE A QUICK MOVER. DRIVEN BY THE UPPER LEVEL TROUGH IN PROGRESSIVE FLOW. COLD FRONT WILL BE EAST OF THE AREA BY FRIDAY MORNING.
HIGH PRESSURE ACROSS THE WESTERN UNITED STATES WILL PROMOTE AN OVERALL WARMING AND DRYING TREND THROUGH THE LATE WEEK.
ONE WEAK SHORT WAVE TROUGH WITH LIGHT SHOWERS WAS PASSING EWD ACROSS IDAHO ZONES THIS MORNING. FEWER SHOWERS THIS AFTERNOON AND TONIGHT THEN INCREASING FRIDAY AS A STRONGER SHORT WAVE TROUGH DROPS IN FROM THE NORTH.
1055 AM EDT THU MAR 24 2016 A WARM FRONT NORTH OF THE REGION WILL ASSURE ONE MORE MILD DAY BEFORE A COLD FRONT MOVES THROUGH OVERNIGHT AND BRINGS A COOLER AIRMASS TO END THE WORK WEEK. MESO ANAL SHOWS THE WARM FRONT HAS MOVED BACK NORTH OF THE BORDER WITH JUST SOME LOW LEVEL COLD AIR REMAINING OVER NERN AREAS. AND THEN SWINGS EASTWARD TONIGHT PUSHING A COLD FRONT ACROSS PA. BUT EASTERN PORTIONS WILL SEE TEMPS RISE INTO THE LOWER 60S BY LUNCHTIME BEFORE FALLING BACK IN THE AFTERNOON. HIGH PRESSURE BUILDS IN FOR FRI NIGHT AS TEMPS FALL BACK TO NEAR NORMAL.
CURRENTLY ACROSS MIDDLE TENNESSEE TEMPERATURES ARE IN THE LOW TO MID 60S WITH WINDS OUT OF THE SOUTH AROUND 10 TO 15 KNOTS. A COLD FRONT WITH AN ASSOCIATED LINE OF POTENTIALLY STRONG TO SEVERE STORMS IS EXPECTED TO MOVE THROUGH THE MID STATE TODAY.
AS A COLD FRONT MOVES ACROSS THE TERMINALS. /ISSUED 505 AM CDT THU MAR 24 2016/ EARLY THIS MORNING THE COLD FRONT HAS BEEN MAKING A QUICK PASSAGE ACROSS THE FOUR STATE REGION AND AS OF 440 THIS MORNING WAS NEAR A HOPE ARKANSAS TO SHREVEPORT/BOSSIER CITY LOUISIANA. STRONG AND GUSTY SOUTHERLY WINDS OCCURRED OUT IN FRONT OF THE COLD FRONT WITH A QUICK TURN TO THE WEST AND NORTHWEST IN ITS WAKE. THE UPPER LEVEL LOW PRESSURE SYSTEM HELPING NUDGE THE COLD FRONT SOUTH WILL QUICKLY MOVE TOWARD THE UPPER MID WEST AND GREAT LAKES AN OPEN INTO A WAVE WITH OUR NEXT UPPER DISTURBANCE DROPPING SOUTH ACROSS THE ROCKIES AND SPLITTING FROM A LEAD SHORT WAVE RETURNING OUR NEXT CHANCE FOR SHOWERS AND THUNDERSTORMS INTO THE WEEKEND.
1044 AM EDT THU MAR 24 2016 RAIN CHANCES WILL INCREASE FROM THE WEST LATE TODAY WITH THE APPROACH OF A COLD FRONT. MOIST ADVECTION AND A DEEP MIXING LAYER WILL SUPPORT WIND GUSTS OF 25-30 KNOTS THIS AFTERNOON AND WILL FUEL INCREASING POPS CHCS WITH THE ADVANCE OF THE SYSTEMS COLD FRONT LATE THIS AFTN INTO THE EVE. COLD FRONT WILL BE A QUICK MOVER. DRIVEN BY THE UPPER LEVEL TROUGH IN PROGRESSIVE FLOW. COLD FRONT WILL BE EAST OF THE AREA BY FRIDAY MORNING.
FOG PRODUCT SATELLITE IMAGERY SHOWS AN EXPANSIVE AREA OF LOW-END VFR OR MVFR CIGS MOVING IN BEHIND THE COLD FRONT CURRENTLY PUSHING THROUGH THE STATE. TODAY THROUGH FRIDAY NIGHT THE MAIN FORECAST CONCERN FOR THE SHORT TERM IS A LINE OF SHOWERS AND THUNDERSTORMS AHEAD OF A COLD FRONT THAT WILL BE MOVING THROUGH THE STATE THIS MORNING. REGARDING FREEZING TEMPERATURES TONIGHT. EXPECT A FEW LOCATIONS IN THE NORTH TO SEE THE FREEZING MARK TONIGHT BENEATH CLEARING SKIES AND SLACKENING WINDS. BUT WIDESPREAD FREEZING TEMPERATURES ARE NOT EXPECTED.
745 AM EDT THU MAR 24 2016 AVIATION A STRONG LOW PRESSURE SYSTEM WILL MOVE THROUGH THE GREAT LAKES REGION TODAY AND CONTINUE TO BRING A MIX OF HEAVY WET SNOW AND FREEZING RAIN TO SOUTH CENTRAL AND CENTRAL LOWER MICHIGAN WHERE SIGNIFICANT ICING AND SNOW ACCUMULATIONS ARE LIKELY.
458 AM EST FRI DEC 4 2015 HIGH PRESSURE IS CURRENTLY DIRECTLY OVERHEAD THE STATE OF KENTUCKY AS OF 7Z. EXPECT QUIET AND CLEAR CONDITIONS THROUGH THE DURATION OF THE SHORT TERM PERIOD AS THE HIGH PRESSURE REMAINS OVERHEAD. STRONG SUBSIDENCE AND MAXIMUM RADIATIONAL COOLING OVERNIGHT TONIGHT WILL PROMOTE ANOTHER RIDGE VALLEY SPLIT AND SIGNIFICANT DIURNAL DROPS. WITH UPPER 20S TO AROUND 30 EXPECTED ON THE RIDGES FOR LOWS. THE ONE CONCERN DURING THIS FORECAST PERIOD WILL BE THE AMOUNT OF DRY AIR BEING USHERED INTO THE REGION UNDER THE INFLUENCE OF THIS HIGH PRESSURE SYSTEM.
A WARM FRONT HAS MOVED THROUGH THE AREA AND SHOWERS ARE EXPECTED TO CONTINUE THROUGH THE NIGHT. THOSE AREAS MAY SEE SOME FREEZING RAIN OR SNOW BUT AMOUNTS SHOULD FAIRLY LIGHT. WARMER AREAS WILL HAVE RAIN SHOWERS. THE WARM FRONT ASSOCIATED WITH THE LATEST PACIFIC SYSTEM HAS LARGELY MOVED NORTH OF THE REGION. THE SYSTEM'S COLD FRONT WILL MOVE ACROSS THE REGION BRINGING VARYING AMOUNTS OF SHOWERS, LOWERING SNOW LEVELS AND ENERGY TO HELP MIX THE REMAINING COLD POOL AIR. COULD SEE SOME SPOTTY FREEZING RAIN, BUT THIS WILL BE VERY LIMITED. OTHER THAN SOME LINGERING, MAINLY MOUNTAIN SHOWERS, EXPECT FAIR CONDITIONS UNDER A TRANSITORY UPPER RIDGE FRIDAY.
1155 PM CST THU DEC 3 2015 THE MID AND UPPER RIDGE OVER THE CENTRAL CONUS IS PROGGED TO TRANSLATE EASTWARD ON FRIDAY WHILE ANOTHER VIGOROUS MID/UPPER TROUGH IMPACTS THE WEST COAST. THE MID/UPPER TROUGH IMPACTING THE WEST COAST WILL MOVE EAST ACROSS THE ROCKIES AND OVER THE CENTRAL PLAINS LATE SAT.
RIDGING ALOFT WILL CREATE A TRANQUIL WEATHER PATTERN. WHILE SURFACE RIDGING OFF TO OUR EAST WILL KEEP WINDS GENERALLY LIGHT SOUTHEAST AT THE SURFACE. WINDS WILL OCCASIONALLY BECOME CALM DURING THE OVERNIGHT HOURS DUE TO DECOUPLING OF THE LOW LEVEL FLOW.
/ISSUED 957 PM CST THU DEC 3 2015/ SFC RIDGING HAS SETTLED SEWD INTO THE MID AND LOWER MS VALLEY AND ECNTRL TX THIS EVENING. WITH AREAS OF FROST AGAIN EXPECTED OVER MUCH OF THE REGION AS TEMPS FALL TO NEAR OR SLIGHTLY ABOVE FREEZING.
Winds will then begin to increase out of the southeast behind that ridge axis on Friday with weak warm air advection kicking in. Highs will range from the lower to middle 50s. Dry and mild weather will continue into Saturday as upper level ridging slides overhead.
344 AM CST FRI DEC 4 2015 MEAGER RIDGING ALOFT IS SET TO OVERSPREAD THE AREA THIS AFTERNOON AHEAD OF A STUBBORN.
Skies will remain clear tonight, but the light southerly winds should help to keep overnight lows a bit warmer than last evening with temperatures in the upper 20s. An area of low pressure will advance into the High Plains region on Friday, which will help to increase the pressure gradient over the forecast area a bit with southerly winds gusting upwards of 15-20mph by Friday afternoon. These increasing southerly winds along with continued sunny skies will aid in some warm-air advection on Friday, so have continued to trend warmer for temperatures with highs reaching into the middle 50s. The period will start off with southwest flow aloft and southerly surface winds ahead of an upper level trough moving into the Rockies Friday night. The upper trough is expected to move into western Kansas on Saturday then across eastern Kansas Saturday night.
FLOOD WATCH CONTINUES FOR BROWARD/MIAMI-DADE THROUGH SATURDAY COLD FRONT EARLY THIS MORNING WAS ALIGNED FROM MAINLAND MONROE COUNTY TO NORTHERN BROWARD COUNTY. HIGH PRESSURE BUILDING NORTH OF THE FRONT WILL LEAD TO INCREASING NORTHEASTERLY WINDS FROM N-S BEHIND THIS FRONT.
SO FAR NO PRECIPITATION HAS BEEN REPORTED AT LOWER ELEVATIONS, BUT RADAR IMAGERY OVER LAST HOUR OR SO SUGGESTS THE HIGHER PEAKS OF THE CENTRAL MTN RANGES MAY BE RECEIVING SOME LIGHT RAIN/SNOW SHOWERS. BROAD MOISTURE FIELD ON LEADING EDGE OF A DEEP UPPER-LEVEL TROF ALONG THE PACNW COAST WILL CONTINUE TO SEND BANDS OF MID- AND HIGH-LEVEL CLOUDS ACROSS CENTRAL AND WESTERN MONTANA.
Dry conditions will continue across western Kansas through Friday night as short range models indicate weak upper level ridging transitioning eastward across the Western High Plains today. Above normal temperatures are likely again today as the strengthening southerly flow reinforces the warmer air mass across the high plains.
113 AM EST FRI DEC 4 2015 HIGH PRESSURE WILL STEADILY STRENGTHEN INLAND THIS AFTERNOON THROUGH THE WEEKEND AS A WEAK COASTAL TROUGH FORMS OFFSHORE. HIGH PRESSURE OVER THE KY/TN VALLEYS REMAINS THE MAIN SURFACE FEATURE INTO THE WEEKEND.
High pressure centered just to our west this afternoon will shift slowly eastward to our longitude Friday morning and will keep winds light and variable overnight. Otherwise, expect a nice day Friday and then another cool night as the high only gets into the upper Ohio River Valley by daybreak Saturday. We should get to a few degrees warmer for morning lows then, as we'll start off with warmer temperatures for highs Friday compared to today.
308 AM EST FRI DEC 4 2015 A WEAK TROUGH OF LOW PRESSURE WILL SWING THROUGH NORTHERN NEW ENGLAND TODAY.
320 AM EST FRI DEC 4 2015 HIGH PRESSURE BUILDS ACROSS THE MID ATLANTIC REGION THROUGH THE WEEKEND.
Plus this area had the least diurnal heating, drying, and mixing due to the low level cloud cover not clearing out until late afernoon or early this evening. Although the lack of cloud cover for tonight would suggest going cooler for overnight mins compared to what was observed last night, surface winds will be turning southerly around the back side of the high after 06z, which will have a moderating influence on temperatures. Locations which were cloudy last night will tend to be cooler tonight, and locations which cleared out late last night will tend to be warmer tonight.
LARGE HIGH PRESSURE SHOULD TAKE HOLD OF THE EASTERN UNITED STATES THROUGH THE WEEKEND AS TEMPERATURE MODERATE SOME OVER THE WEEKEND.
1133 PM EST THU DEC 3 2015 AVIATION MILD AND QUIET WEATHER IS EXPECTED THROUGH THE WEEKEND AS HIGH PRESSURE REMAINS IN CONTROL ACROSS THE GREAT LAKES REGION. WESTERLY FLOW THROUGH THE LOWER TROPOSPHERE INCREASES THROUGH THE NIGHT AND INDUCING SOME DRY AIR ENTRAINMENT INTO THE TOP OF THE CLOUD LAYER. THE INCIPIENT DRYING SHOULD ENCOURAGE BREAKS TO DEVELOP IN THE LOW CLOUDS AROUND DAYBREAK. LONGWAVE RIDGING BECOMES FIRMLY ESTABLISHED ACROSS THE EASTERN CONUS BY LATE FRIDAY - AND HEIGHTS WILL REMAIN WELL ABOVE AVERAGE THROUGH THE FORECAST PERIOD.
TEMPERATURES HAVE RESPONDED BY DROPPING INTO THE 30S ACROSS MUCH OF THE AREA WITH LOCATIONS IN THE NORTHERN HILL COUNTRY FLIRTING WITH THE FREEZING MARK. CLEAR SKIES ARE EXPECTED TO CONTINUE THIS AFTERNOON WITH TEMPERATURES WARMING INTO THE LOWER TO MIDDLE 60S WITH THE WARMER TEMPERATURES OCCURRING ACROSS THE SOUTHERN PORTIONS OF THE CWA. HIGHS SATURDAY WILL BE A DEGREE OR TWO WARMER THAN TODAY AS WEAK SOUTHERLY FLOW AT THE SURFACE RETURNS TO THE AREA.
HIGH PRESSURE WILL PREVAIL TO PROVIDE CLEAR SKIES. HIGH PRESSURE WILL BE IN CONTROL BOTH AT THE SURFACE AND ALOFT THROUGH THE WEEKEND WITH ABSOLUTELY DELIGHTFUL TEMPERATURES AND LOW HUMIDITIES.
ANOTHER UPPER LEVEL TROF WAS BEGINNING TO MOVE THROUGH UTAH/IDAHO. WE SHOULD SEE THE LOW LEVEL GRADIENT (800-700MB) BEGIN TO TIGHTEN OVERNIGHT INTO FRIDAY WHICH SHOULD CAUSE WIND SPEEDS TO INCREASE OVER PORTIONS OF WYOMING. FRIDAY NIGHT-SATURDAY NIGHT: WE WILL START TO SEE THE AFFECTS OF THE UPPER LEVEL TROF MOVING INTO THE REGION. THIS TROF WILL INDUCE UPSLOPE FLOW ALONG THE SNOWY/SIERRA MADRE RANGE ON FRIDAY NIGHT INTO SATURDAY MORNING. COOLER TEMPERATURES WILL BE IN STORE FOR THE AREA ON SATURDAY WITH BRISK WEST-NORTHWEST WINDS.
For tonight high pressure currently centered over MO will glide off to the east but the southerly return flow will be quite light. Have increasing confidence to raise PoPs into the low-end chance range for late Saturday night across the western 1/2 of the CWA.
1238 AM EST FRI DEC 4 2015 LOW PRESSURE WILL EXIT ACROSS THE MARITIMES OVERNIGHT. WITH HIGH PRESSURE BUILDING ACROSS THE REGION LATE. HIGH PRESSURE WILL THEN REMAIN ACROSS THE REGION THROUGH THE WEEKEND. PREV DISC: SURFACE/UPPER LEVEL LOW PRESSURE IS CURRENTLY EXITING ACROSS THE MARITIMES WITH SNOW EXITING EASTERN PORTIONS OF THE FORECAST AREA. CLOUD COVER WILL THEN DECREASE LATE TONIGHT WITH BUILDING HIGH PRESSURE. HIGH PRESSURE BUILDS ALONG THE EAST COAST FOR A DRY AND MILD EARLY WINTER WEEKEND.
347 AM EST FRI DEC 4 2015 UPPER LEVEL TROF AND SHORT WAVE ENERGY CROSS THE REGION TODAY BRINGING SOME MOUNTAIN SNOW SHOWERS TO THE NORTH COUNTRY. LATER TONIGHT AND THROUGH THE WEEKEND A LARGE SURFACE AND UPPER LEVEL RIDGE BUILD OVER THERE AREA. ESPECIALLY ACROSS OUR NORTHERN ZONES AND IN THE HIGHER ELEVATIONS. SOME LINGERING MOISTURE IN THE NORTHWEST UPPER LEVEL FLOW WILL KEEP POTENTIAL FOR SNOW SHOWERS ACROSS THE HIGHER TERRAIN TONIGHT. THE FORECAST IS DRY THEN THROUGH THE REST OF THE WEEKEND WITH HIGH PRESSURE IN CONTROL OF OUR WEATHER PATTERN.
1251 AM EST FRI DEC 4 2015 HIGH PRESSURE WILL BRING DRY WEATHER AND SLOWLY MODERATING TEMPERATURES THROUGH THE WEEKEND. FRIES CLOUD COVERAGE WILL LESSEN FRIDAY MORNING AS DRIER AIR ALOFT MIXES DOWN AND HIGH PRESSURE CONTINUES TO BUILD OVER THE FORECAST. TEMPERATURES WILL SLOWLY WARM THROUGH THE PERIOD AS HIGH PRESSURE REMAINS THE DOMINANT FEATURE.
1114 PM EST THU DEC 3 2015 LOW PRESSURE WILL EXIT ACROSS THE MARITIMES OVERNIGHT. WITH HIGH PRESSURE BUILDING ACROSS THE REGION LATE. HIGH PRESSURE WILL THEN REMAIN ACROSS THE REGION THROUGH THE WEEKEND. SURFACE/UPPER LEVEL LOW PRESSURE IS CURRENTLY EXITING ACROSS THE MARITIMES WITH SNOW EXITING EASTERN PORTIONS OF THE FORECAST AREA. CLOUD COVER WILL THEN DECREASE LATE TONIGHT WITH BUILDING HIGH PRESSURE. HIGH PRESSURE BUILDS ALONG THE EAST COAST FOR A DRY AND MILD EARLY WINTER WEEKEND.
1243 AM EST FRI DEC 4 2015 LOW PRESSURE CENTERED NEAR THE MAINE COAST THIS AFTERNOON WILL MOVE SLOWLY EASTWARD ACROSS THE CANADIAN MARITIMES TONIGHT. WITH HIGH PRESSURE BRIEFLY IN PLACE ACROSS THE REGION FRIDAY MORNING. SOME LIGHT ADDITIONAL SNOW ACCUMULATION IS POSSIBLE THROUGH THIS EVENING ACROSS THE HIGHER SUMMITS OF THE ADIRONDACKS AND NORTHERN GREEN MOUNTAINS. WITH ADDITIONAL LIGHT SNOW ACCUMULATIONS POSSIBLE ACROSS THE HIGHER SUMMITS. WILL SEE A CHANCE OF RAIN/SNOW SHOWERS FRIDAY AFTN FOR NRN AREAS WITH MID- LEVEL SYNOPTIC ASCENT WITH APPROACHING TROUGH.
UPPER RIDGE OVER COLORADO TODAY. RIDGE SLIDES SLOWLY EAST AS STRONG TROUGH MOVES ONSHORE ACROSS THE PACIFIC NORTHWEST. SOUTHWEST FLOW INCREASES ACROSS THE STATE WITH WELL DEVELOPED LEE TROUGH OVER THE PLAINS THROUGH THE DAY. DEEPER MIXING SHOULD LEAD TO SLIGHTLY WARMER MAX TEMPS MOST AREAS. AND NUDGED UP CONSENSUS GRIDS TOWARD THE WARMER SIDE OF THE GUIDANCE ENVELOPE. HIGH PRESSURE WILL BE SHIFTING EAST INTO THE CENTRAL PLAINS FRIDAY NIGHT AS A FAST MOVING THROUGH MOVES OUT OF THE INTERMOUNTAIN WEST AND INTO COLORADO. ALL MODEL SOLUTIONS CONTINUE TO INDICATE LIMITED MOISTURE WITH THIS TROUGH WITH MOST DRY CONDITIONS ACROSS THE REGION. TEMPERATURES WILL BE SLIGHTLY COOLER ACROSS THE PLAINS BEHIND A COLD FRONT ON SATURDAY WITH MID TO UPPER 40S FOR HIGHS AND WITH BREEZY NORTH WINDS.
HIGH PRESSURE WILL RIDGE INTO SOUTHEAST TEXAS AND KEEP VFR CONDITIONS IN PLACE.
925 PM PST THU DEC 3 2015 SCATTERED SHOWERS WILL CONTINUE OVERNIGHT TO THE NORTH OF POINT CONCEPTION AS A COLD FRONT PUSHES THROUGH THE AREA. COOLER TEMPERATURES ARE EXPECTED BEHIND THE FRONT ON FRIDAY WITH LOCALLY GUSTY OFFSHORE WINDS ACROSS LOS ANGELES AND VENTURA COUNTIES LASTING INTO SATURDAY.
347 AM EST FRI DEC 4 2015 DRY HIGH PRESSURE WILL REMAIN ACROSS THE REGION THROUGH THE REST OF THE WEEK.
416 AM EST FRI DEC 4 2015 HIGH PRESSURE WILL EXTEND ACROSS THE REGION THROUGH THE WEEKEND.
1235 AM EST FRI DEC 4 2015 CLOUDS WILL LINGER ACROSS PORTIONS OF THE AREA TONIGHT AS AN UPPER LEVEL LOW CONTINUES TO MOVE AWAY FROM THE REGION.
327 AM CST FRI DEC 4 2015 LITTLE SENSIBLE WEATHER OVER IOWA TODAY WITH HIGH PRESSURE SITUATED OVER THE MID OHIO VALLEY AND LOW PRESSURE TROUGH WELL TO THE WEST.
Snow showers redeveloping over the Sierra this evening as trough and cooler air aloft moves southeast. The weather clears out nicely through the day tomorrow with a nice ridge building in.
/ISSUED 940 PM CST THU DEC 3 2015/ HIGH PRESSURE CONTINUES OVER THE AREA.
314 AM EST FRI DEC 4 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION THROUGH THE WEEKEND.
246 AM CST FRI DEC 4 2015 LEE TROUGH DEVELOPMENT WILL OCCUR TODAY INTO SATURDAY AHEAD OF AN UPPER LEVEL TROUGH MOVING THROUGH THE WESTERN STATES AND INTERMOUNTAIN REGION.
OVERNIGHT LOWS WILL RANGE FROM THE LOW TO MID 40S FROM WAYCROSS NORTHWESTWARD. AND THE LOW 60S ALONG COASTAL NORTHEAST FLORIDA.
A TROUGH MOVING INLAND TO THE NORTH WILL BRING MARINE LAYER CLOUDS TO THE COASTAL AND VALLEY AREAS TONIGHT. AND COOLER WEATHER TO MOST AREAS FRIDAY. HIGH PRESSURE BUILDING ALOFT ON FRIDAY NIGHT WILL BRING WARM WEATHER OVER THE WEEKEND ALONG WITH LOCALLY GUSTY OFFSHORE WINDS.
ONE SUCH WAVE WILL CROSS THE STATE ON SATURDAY WHICH WILL BRING COOLER TEMPERATURES AND SOME GUSTY WINDS. RIDGING WILL GIVE WAY TO SOUTHWEST FLOW ALOFT ON FRIDAY. OR PERHAPS A DEGREE OR TWO WARMER. THE FIRST IN A SERIES OF TROUGHS WILL QUICKLY MOVE ACROSS THE STATE ON SATURDAY. BUT STRONGER NW WINDS BEHIND THE PACIFIC COLD FRONT WILL GENERALLY BE THE MAIN CHANGE TO THE SENSIBLE WEATHER ELSEWHERE.
UPPER-RIDGE CENTERED ACROSS NORTH CENTRAL TEXAS MAINTAINING MOSTLY CLEAR SKIES ACROSS THE ARKLATEX THIS MORNING. UPPER-LEVEL RIDGE TO BUILD ACROSS THE REGION THROUGH SATURDAY AFTERNOON MAINTAINING MOSTLY CLEAR SKIES AREAWIDE.
1233 AM EST FRI DEC 4 2015 HIGH PRESSURE CONTINUES AT THE SFC AND ALOFT CONTINUES TO BUILD INTO EASTERN KY. HIGH PRESSURE CONTINUES TO NOSE INTO THE REGION THIS AFTERNOON AS LOW PRESSURE THAT BROUGHT PRECIP RESIDES NEAR THE MAINE COAST. LOW TEMPS THROUGH THE PERIOD WILL DROP INTO THE UPPER 20S TO LOWER 30S ON RIDGES AND LOW TO MID 20S FOR OVERNIGHT.
335 AM EST FRI DEC 4 2015 HIGH PRESSURE BUILDS THROUGH THE WEEKEND WITH A WEAK FLOW.
SURFACE ANALYSIS THIS AFTERNOON PLACES A 1030 MB RIDGE OF HIGH PRESSURE OVER THE MIDDLE AND LOWER MISSISSIPPI VALLEYS. THIS IS RESULTING IN SUNNY SKIES AND TEMPERATURES AS OF 3 PM CST IN THE LOWER TO MIDDLE 40S NEAR THE KENTUCKY/TENNESSEE BORDER AND UPPER 40S TO LOWER 50S ELSEWHERE. A RIDGE OF HIGH PRESSURE WILL BRING RAIN FREE WEATHER TO THE MID SOUTH TONIGHT THROUGH SATURDAY NIGHT.
1116 PM CST THU DEC 3 2015 BROAD UPPER LEVEL RIDGING WAS IN PLACE OVER THE CENTRAL CONUS. WITH LOW AMPLITUDE WAVES PIVOTING AROUND THE RIDGE. THE CLOSED UPPER LEVEL LOW THAT BROUGHT SNOW TO THE REGION EARLIER THIS WEEK WAS MOVING OVER THE NORTHEAST. WITH A TROUGH BEGINNING TO MOVE INTO THE THE PACIFIC NORTHWEST. KEPT IT COOLER IN THE PLATTE RIVER VALLEY TO ACCOUNT FOR NOCTURNAL DRAINAGE. THIS IS STILL WARMER THAN TODAY TO ACCOUNT FOR 850HPA WAA.
CONVECTION ALONG THE BOUNDARY HAS DIMINISHED OVERNIGHT AS THE LOW LEVEL JET HAS WEAKENED. COOLER AIR TO THE NORTH AND MOIST AIR ALONG THE BOUNDARY IN THE SOUTH HEADING INTO THE WEEKEND. BUT THE HIGHEST POSSIBILITY OF THUNDERSTORMS SHOULD REMAIN OUTSIDE OF THE FORECAST AREA.
UPPER LEVEL RIDGING WILL CONTINUE TO BUILD IN FROM THE WEST THROUGH FRIDAY BRINGING WITH IT DRY NORTHWEST FLOW. A SERIES OF UPPER LEVEL TROUGHS WILL BEGIN MOVING THROUGH THE AREA STARTING SATURDAY. THE FIRST WILL BRING A WEAK AND DRY COLD FRONT DURING THE DAY ON SATURDAY BUT TEMPS BEHIND THIS WILL ONLY DROP SLIGHTLY.
228 AM EST FRI DEC 4 2015 HIGH PRESSURE WILL BRING DRY WEATHER AND SLOWLY MODERATING TEMPERATURES THROUGH THE WEEKEND. FRIES CLEAR AND DRY CONDITIONS WILL PERSIST THROUGH THE WEEKEND AS HIGH PRESSURE SETTLES OVER THE REGION. HIGH TEMPERATURES WILL WARM THROUGH THE WEEKEND AS AXIS OF THE UPPER RIDGE SLOWLY SHIFTS EAST AND CALM WINDS STIR FROM THE SOUTH. NIGHTTIME LOWS WILL REMAIN NEAR OR JUST BELOW FREEZING AS THE CLEAR CONDITIONS WILL LEAD TO RADIATIONAL COOLING AND DE-COUPLING OF THE LOWER ATMOSPHERE. TAX WEAK AND RELATIVELY DRY LOW PRESSURE SYSTEM WILL MOVE THROUGH THE PLAINS APPROACHING OUR REGION TOWARD THE LATTER PART OF THE WEEKEND. WITH THE LOW FULLY DETACHING FROM THE UPPER-LEVEL STREAM TO THE NORTH.
HIGH LEVEL TROF AXIS OVER THE SOUTHERN US PROGRESSES EASTWARD TODAY TO ACROSS THE APPALACHIANS AND SOUTHEAST TONIGHT. SKIES ARE CLEAR AS WATER VAPOR SATELLITE IMAGERY INDICATES A MUCH DRIER AIRMASS FILTERING ACROSS THE SOUTHERN US WITH THE PASSAGE OF THE LARGE SCALE TROF AXIS. STRONG HIGH PRESSURE (1033 MILLIBARS) WAS ANALYZED ACROSS THE OHIO RIVER VALLEY. WITH THE STRENGTH OF THE HIGH TO THE NORTH.
926 PM MST THU DEC 3 2015 QUIET AND SEASONAL TEMPS TONIGHT AND FRIDAY UNDER HIGH PRESSURE ALOFT. LONG WAVE UPPER LEVEL TROUGH OVER THE WEST COAST TONIGHT WILL PUSH TO NEAR THE UT/CO BORDER FRIDAY NIGHT. SOME MOISTURE INCREASE IN THE MID LEVELS AND WEAK SYNOPTIC SCALE LIFT AHEAD OF THE TROUGH MAY YIELD SOME LIGHT SNOW OVER THE NORTHERN MTN AREAS BY DAYBREAK SATURDAY. AS MID LEVEL WINDS SHIFT AROUND TO THE NW WITH THE TROUGH PASSAGE SATURDAY. THIS WILL LIKELY OCCUR COINCIDENT WITH BREEZY CONDITIONS OVER PASSES AND RIDGETOPS BLOWING THE SNOW AROUND.