Aikyam-Lab/Synoptic-Bench huggingface dataset:
244 PM MST FRI DEC 4 2015 HIGH CLOUDS IN THE WARM ADVECTION AHEAD OF THE NEXT LITTLE TROUGH WILL SPREAD ACROSS THE FORECAST AREA THIS EVENING THEN THE MAIN AREA OF INSTABILITY AND MOISTURE WILL REACH NW CO AND NE UT AFTER MIDNIGHT TONIGHT. TOWARD SUNRISE THE TROUGH WILL DEEPEN A BIT AND START DIGGING SOUTH. A WELL DEFINED UPPER LEVEL TROUGH WILL MOVE THROUGH EASTERN UTAH AND WESTERN COLORADO. COOLER AIR WILL ACCOMPANY THIS SYSTEM. SO THIS COMBINED WITH CLOUD COVER WILL BRING NOTICABLY COOLER MAX TEMPS FOR MUCH OF THE REGION. A TRANSITORY RIDGE WILL QUICKLY MOVE OVER THE AREA SATURDAY NIGHT.
WEST FLOW WILL KEEP SOME SHOWERS GOING THIS AFTERNOON, MAINLY OVER THE HIGHER TERRAIN AND NEAR THE CASCADE CREST. THIS SYSTEM HAS WEAKENED THE LOW LEVEL INVERSIONS AND MIXING IS STARTING TO OCCUR ACROSS MANY PORTIONS OF THE COLUMBIA BASIN.
1243 PM EST FRI DEC 4 2015 AVIATION A RIDGE OF HIGH PRESSURE WILL CONTINUE TO BUILD INTO THE LOWER GREAT LAKES REGION TODAY THROUGH THE WEEKEND AND PRODUCE FAIR AND MILD WEATHER FOR THIS TIME OF YEAR. HIGH PRESSURE WILL CONTINUE TO BUILD IN AND PRODUCE MOSTLY CLEAR TO PARTLY CLOUDY SKIES TODAY THROUGH TONIGHT AFTER MORNING LOW CLOUD COVER MOVES OUT AND DISSIPATES. THE RIDGE OF HIGH PRESSURE WILL REMAIN IN CONTROL OF THE WX PATTERN AND BRING MOSTLY CLEAR TO PARTLY CLOUDY SKIES AND MILD TEMPS FOR THIS TIME OF YEAR THROUGH THE WEEKEND.
SFC RIDGING WILL LEAD TO CONTINUED DRY AND SUNNY CONDITIONS.
HIGH PRESSURE IS EXPECTED TO REMAIN TO THE SOUTHEAST OF THE AREA DURING THIS PERIOD.
248 PM CST FRI DEC 4 2015 Weak upper level trough was over eastern Kansas this afternoon while another trough was moving into California. As high pressure moves off to the east tonight low pressure will continue to deepen along the lee of the Rockies, which will keep the lower boundary layer mixed overnight. Lows tonight will be warmer than the previous two nights and range from the upper 30s in north central Kansas to the lower 30s across east central Kansas. Despite the warm southerly winds the cloud cover as well as lower sun angle will lead to temperatures a few degrees cooler than today, but still above normal for early December with readings in the lower to mid 50s.
HIGH PRESSURE BUILDING OVER THE AREA WILL LEAD TO QUIET WEATHER.
NORTHEASTERLY WINDS OF 5 TO 10 MPH WILL OCCUR ON THE SOUTHERN SIDE OF THIS HIGH TODAY. IT WILL BE A BIT WARMER TODAY. KTW HIGH PRESSURE WILL KEEP VFR CONDITIONS IN THE FORECAST THROUGH THE TAF PERIOD.
313 PM EST FRI DEC 4 2015 HIGH PRESSURE OVER FAR SW INDIANA WILL SHIFT EAST. MIGHT IT EXPAND BACK OUT AGAIN AFTER SUNSET? OUR LOW LEVEL FLOW WILL BACK MORE TO THE SSW AS THE HIGH MOVES EASTWARD. A LARGE AREA OF HIGH PRESSURE OVER THE NORTHEASTERN UNITED STATES WILL CONTINUE TO DOMINATE NORTHERN MICHIGAN'S WEATHER THROUGHOUT THIS FORECAST PERIOD.
THE TROUGH AXIS WILL BE LOCATED ALONG THE WESTERN CO BORDER BY 12Z SAT AND WILL MAKE IT TO THE EASTERN BORDER BY 00Z. THEN THE LOWER LEVELS WILL START TO MOISTEN UP TOWARDS 12Z. WL KEEP ISOLD TO SCT POPS IN THE HIGH COUNTRY AFT 09Z. WITH DECREASING QG ASCENT AFTER 18Z FOLLOWING THE PASSAGE OF THE UPPER TROUGH AXIS. UPPER LEVEL TROUGH WILL MOVE EAST OF THE AREA SATURDAY EVENING.
1113 AM EST FRI DEC 4 2015 A LARGE RIDGE OF HIGH PRESSURE WILL BUILD ACROSS THE NORTHEAST CONUS TODAY THROUGH THIS WEEKEND.
TONIGHT THROUGH SATURDAY THE PACIFIC TROUGH AND COLD FRONT WILL PASS THROUGH THE AREA TONIGHT WITH AREAS OF LIGHT SNOW IN THE WEST WITH 2 TO 5 INCHES POSSIBLE IN THE MOUNTAINS AND 1. THE TROUGH AND FRONTAL PASSAGE SHOULD HELP MIX OUT THE VALLEYS AND BASINS WITH SOME WARMING OF TEMPERATURES. SATURDAY NIGHT THROUGH FRIDAY THE FIRST 24 HOURS OF THE PERIOD LOOKS LIKE THE QUIETEST PERIOD AS A RIDGE OF HIGH PRESSURE DEPARTS TO THE EAST BUT HOLDS ON LONG ENOUGH FOR A DRY FINISH TO THE WEEKEND FOR ALL AREAS.
WITH A LEE TROUGH AHEAD OF THE SYSTEM DEVELOPING ALONG THE FRONT RANGE OF THE ROCKIES TONIGHT INTO EARLY SAT. SO FN-CONVERGENCE NOTED AS THIS TROUGH MOVES ACROSS. EXPECT SURFACE TEMPS TO STAY ABOVE FREEZING.
WHICH GIVEN THE TEMPS THIS MORNING WILL LIKELY BE FREEZING FOG. SINCE ALL TEMPERATURES ACROSS THE REGION ARE BELOW FREEZING. IT IS LIKELY THAT WHATEVER PATCHY FOG HAS DEVELOPED ACROSS THE REGION IS OF THE FREEZING VARIETY. CHANGED WEATHER GRIDS FOR THE NEXT COUPLE HOURS TO REFLECT PATCHY FREEZING FOG INSTEAD. 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.
12z Area soundings a little cooler than yesterday.
IT IS APPARENT THAT THE LOW-LEVEL INVERSION IS ONLY SLOWLY BEING ERODED IN SOUTHERLY FLOW. A MODEST COLD FRONT WILL CROSS THE AREA TONIGHT.
LEE TROUGH DEVELOPMENT WILL OCCUR TODAY INTO SATURDAY AHEAD OF AN UPPER LEVEL TROUGH MOVING THROUGH THE WESTERN STATES AND INTERMOUNTAIN REGION.
NAM/GFS and model blends show cooler max temperatures but upstream temperatures over KS are well into the 50s so prefer going closer to persistence.
Whitebird Hill on US-95 at 4200 feet, saw some snow accumulation this morning, but has since warmed up to above freezing. Snow will likely develop after 6 pm MST from Georgetown Lake to Butte and with below freezing temperatures, roads could become slick. Patchy freezing fog is possible across central Idaho and western Montana later tonight, but confidence is low on what locations will see the worst visibility. On top of that chance, there is a low threat for freezing drizzle especially for valleys in northwestern Montana.
AND SATURDAY UNSEASONABLY STRONG MID-LEVEL RIDGE WILL BE THE DOMINATE WEATHER FEATURE OVER THE GREAT LAKES REGION TODAY INTO SATURDAY. RECENT MODEL TRENDS SUGGEST UPPER-LEVEL RIDGE WILL EVEN BE A BIT MORE ROBUST OVER THE GREAT LAKES AND OHIO VALLEY WITH LARGE-SCALE SUBSIDENCE AND DEEP DRY LAYER OVER MUCH OF THIS REGION. LATEST GUIDANCE ALSO SEEMS TO BE A BIT SLOWER WITH BRINGING IN MID TO HIGH-LEVEL CLOUDS AHEAD OF APPROACHING UPSTREAM TROUGH AND ASSOCIATED FRONTAL BOUNDARY ON SATURDAY. MAKES SENSE GIVEN MORE ROBUST DOWNSTREAM RIDGE.
UPPER AIR ANALYSIS THIS MORNING SHOWED A WEAK RIDGE MOVING OVER TEXAS WITH WEST-NORTHWESTERLY FLOW. HIGH PRESSURE WAS CENTERED TO THE NORTHEAST WITH EASTERLY TO SOUTHEASTERLY WINDS ACROSS OUR CWA. THE UPPER RIDGE WILL MOVE TO THE EAST AND A TROUGH WILL PASS OVER THE NORTH OF IT.
HAVE KEPT FORECAST HIGHS TOWARD THE COOLER SIDE OF GUIDANCE WITH LINGERING SNOW PACK. HAVE KEPT MOST EXPOSED AREAS ALONG THE BUFFALO RIDGE THE WARMEST TONIGHT.
THEREFORE EXPECTING COOLER NIGHTS AND ABOVE NORMAL AFTERNOON TEMPS. RIGHT NOW LOOKS LIKE BETTER CHANCES OF FOG/FREEZING FOG TONIGHT WOULD BE IN THE RIVER VALLEYS. WITH TEMPS IN THE LOW TO MID 20S VALLEYS AND MID TO UPPER 20S RIDGES. THIS HIGH IS PROGGED TO SHIFT EAST THROUGH THE REST OF THE PERIOD. GIVEN THE HIGH SHIFTS EAST RETURN FLOW LOOKS TO BE ENOUGH TO ALLOW FOR SOME SLIGHT MODERATION INTO THE LOW TEMPS FOR SATURDAY NIGHT IN WESTERN PORTIONS OF THE CWA.
UPDATE: Patchy dense fog that caused some slick spots on some bridges and overpasses this morning has dissipated, therefore the advisory was cancelled. Otherwise, sunny sky today will allow temperatures to top out in the lower 50s in most locals. This may be due to increasing southwesterly boundary layer wind, and slightly warmer air infiltrating into the region.
AROUND HIGH PRESSURE SITTING IN THE LOWER OHIO VALLEY. BREEZY WINDS ALOFT AND THE CLOUDS ARE KEEPING TEMPERATURES IN THE LOWER TO MIDDLE 30S. BUT THE DEEP DRY AIR UPSTREAM WITH THE APPROACHING MID LEVEL RIDGE. HIGHS IN THE LOW TO MID 40S. A LARGE AREA OF HIGH PRESSURE WILL REMAIN RIDGED FROM NEW ENGLAND INTO THE GREAT LAKES SATURDAY YIELDING MOSTLY SUNNY AND BREEZY CONDITIONS.
BREEZY TO WINDY NEAR THE COAST THIS WEEKEND WITH A FEW A COLD FRONT HAS MOVED SOUTH INTO THE FLORIDA KEYS. WITH A WEAK INVERTED TROUGH OFFSHORE. A FEW SHOWERS CONTINUE TO DEVELOP OFFSHORE CLOSER TO THE TROUGH. WITH HIGH PRESSURE TO THE NORTH. AND A WEAK INVERTED TROUGH OFFSHORE. LOWS TNGT WILL RANGE FROM THE LOWER/MID 40S FAR INLAND.
THE MAIN CONCERN IS THE WIND POTENTIAL ON THE LEE SIDE OF THE BUFFALO RIDGE ACROSS FAR WESTERN MN. COULD SEE 35-40KT GUSTS LATE TONIGHT AS WINDS CROSS THE RIDGE. A NARROW LONG WAVE TROUGH WILL APPROACH THE REGION FROM THE WEST LATE SATURDAY. A WEAK COLD FRONT WILL BE TRACKING ACROSS THE AREA ON SATURDAY NIGHT.
SFC WINDS WILL SHIFT TO A WESTERLY DIRECTION AND AREAS OVER THE SNOW FIELD SHOULD BE A BIT WARMER THAN TODAY. TEMPS WILL CONTINUE TO BE WARMER OVER THE SNOW FREE AREAS OF NORTHEAST ND. ANOTHER MILD NIGHT IS EXPECTED ALTHOUGH IT WILL BE COOLER THAN TONIGHT.
/ISSUED 956 AM CST FRI DEC 4 2015/ LOOK FOR CLEAR SKIES AND HIGHS IN THE MID 50S THROUGHOUT THE MIDSOUTH TODAY AS HIGH PRESSURE CONTINUES TO DICTATE OUR WEATHER. 1033 MB HIGH PRESSURE IS CENTERED OVER THE OHIO VALLEY.
1250 PM EST FRI DEC 4 2015 HIGH PRESSURE WILL EXTEND ACROSS THE REGION THROUGH THE WEEKEND.
AS HIGH PRESSURE CENTERED OVER THE OH VALLEY REGION DOMINATES THE OVERALL PATTERN. THE LARGE DOME OF HIGH PRESSURE WILL CONTINUE TO GRADUALLY MAKES ITS WAY EWD INTO THE MID ATLANTIC COAST. THIS WILL AT LEAST RESULT IN SLIGHTLY WARMER TEMP TREND BY THE LATTER HALF OF THE WEEKEND PERIOD. 09 /ISSUED 1140 AM CST FRI DEC 4 2015/ HIGH PRESSURE WILL KEEP VFR CONDITIONS IN THE FORECAST THROUGH THE TAF PERIOD.
TROUGHING CONTINUES OFF THE EASTERN SEABOARD. HIGH PRESSURE RIDGING OVER THE GREAT LAKES REGION IS SUPPORTING A STRONG HIGH PRESSURE CENTER OVER OHIO. THE INTERACTION BETWEEN THE FRONTAL BOUNDARY OVER SOUTHERN FLORIDA AND HIGH PRESSURE FARTHER NORTH IS PRODUCING A ROBUST NORTHEAST WIND FLOW ACROSS THE FLORIDA PENINSULA. THE HIGHEST CHANCES OF RAIN WILL OCCUR OVER SOUTHERN FLORIDA LATER TONIGHT AND THEN OVER THE INLAND COUNTIES ON SATURDAY.
WITH HIGH PRESSURE IN CONTROL OVER THE EASTERN HALF OF THE CONUS.
115 PM EST FRI DEC 4 2015 HIGH PRESSURE WILL BRING DRY WEATHER AND SLOWLY MODERATING TEMPERATURES THROUGH THE WEEKEND. MAINLY CLEAR SKIES ARE ANTICIPATED OVERNIGHT AS RIDGE OF HIGH PRESSURE MOVES OVER THE REGION. CLEAR AND DRY CONDITIONS WILL PERSIST THROUGH THE WEEKEND AS HIGH PRESSURE SETTLES OVER THE REGION.
HIGH PRESSURE ALOFT WILL RETURN FOR THE LATTER HALF OF THE WEEKEND.
BROAD MID LEVEL TROUGH WILL CROSS THE FA THIS WEEKEND. A WEAK COLD FRONT WILL CROSS THE REGION SATURDAY. COLUMN COOLER SO TEMPERATURES MAY BE MORE UNIFORM ACROSS THE FA BUT STILL WELL ABOVE AVERAGE. MODELS INITIALIZED WELL AND CONTINUE TO SHOW A GENERAL BROAD RIDGE ACROSS THE NRN PLAINS. WITH THE UPPER RIDGE REMAINING IN PLACE.
309 PM EST FRI DEC 4 2015 RIDGE OF HIGH PRESSURE WILL BRING DRY WEATHER AND SLOWLY MODERATING TEMPERATURES THROUGH THE WEEKEND. MAINLY CLEAR SKIES ARE ANTICIPATED OVERNIGHT AS RIDGE OF HIGH PRESSURE MOVES OVER THE REGION. CLEAR AND DRY CONDITIONS WILL PERSIST THROUGH THE WEEKEND AS HIGH PRESSURE SETTLES OVERHEAD.
AREAS OF DENSE FOG HAD FORMED UPSTREAM ON THE EDGE OF THE LOW CLOUD DECK OVER ILLINOIS. UPPER AIR SOUNDINGS AND AIRCRAFT SOUNDINGS SHOW A VERY WARM AND DRY LAYER ABOVE THE LOW CLOUDS. TRENDS AND MOST OF THE LATEST MODEL GUIDANCE FAVORED A SLOWER CLEARING AND THUS MUCH COOLER HIGHS TODAY. THE NAM/MET HIGH OF 35 AT LIMA SHOWS THIS DIFFERENCE AND IS MUCH COOLER THAN THE GFS/MAV OF 49. THERE IS ALSO THE CHANCE FOR FREEZING FOG NEAR MONTICELLO EARLY THIS MORNING.
GIVEN THE ANTICIPATED WARMER TEMPERATURES. AS 40-45KT WINDS ARE FORECAST TO RESIDE WITHIN THE LOW LEVEL WARM AIR ADVECTION INDUCED INVERSION. BASED ON THE TEMPERATURE PATTERN OBSERVED YESTERDAY AND WARMER THERMAL PROFILES TODAY. A TROUGH ACROSS EASTERN MONTANA WILL CONTINUE TO SUPPORT SOUTHERLY WARM AIR ADVECTION. FEEL THE LIKELIHOOD OF EVEN WARMER TEMPERATURES TODAY WARRANTED BUMPING UP TEMPERATURES TODAY INTO THE UPPER 40S AND LOW 50S OVER ALL BUT THE SOUTHERN JAMES VALLEY WHERE SNOW IS A BIT DEEPER. A COOLER SATURDAY IS FORECAST ACROSS WESTERN AND CENTRAL NORTH DAKOTA IN THE WAKE OF A COLD FRONT THAT WILL HAVE PROPAGATED THROUGH THE AREA FRIDAY EVENING AND NIGHT.
WITH AN UPPER LEVEL TROF OF LOW PRESSURE MOVING THRU THE REGION.
COLD FRONT CURRENTLY EXTENDS FROM JUST WEST OF SHERIDAN TO JUST EAST OF EVANSTON. ALOFT WE SEE AN AMPLIFYING UPPER TROUGH MOVING ACROSS NEVADA AND UTAH WITH A 90-100 UPPER JETMAX THAT WILL MOVE ACROSS EASTERN WYOMING AND WESTERN NEBRASKA LATE TONIGHT INTO SATURDAY MORNING. HOWEVER THERE WILL BE ENOUGH TO PRODUCE SNOW SHOWERS IN THE HIGHER ELEVATIONS OF THE SIERRA MADRE AND SNOWY RANGES LATE TONIGHT INTO EARLY SATURDAY BEFORE DIMINISHING. WE WILL BE COOLER BEHIND THE FRONT TOMORROW BUT NOT BITTER COLD FOR HIGHS.
RIDGE OF HIGH PRESSURE WILL REMAIN UNDER CONTROL PRODUCING GENERALY LIGHT WINDS.
We will have weak ridging aloft today, with flow becoming more southwest tonight. Sunny skies and highs in the lower 60s today will be replaced with a few high clouds tonight as southwest flow increases. This will allow some modest moisture return tonight, and lows of a couple degrees warmer. We still may see some of our valley areas across the southern CWA reach near freezing, but most locations are expected to drop into the mid 30s for lows.
THE AXIS OF A 500 MB RIDGE OF HIGH PRESSURE WILL GRADUALLY TRANSITION FROM THE FOUR CORNERS REGION OF THE UNITED STATES. WITH FRIDAY NIGHT LOW TEMPERATURES ABOUT 4 TO 6 DEGREES WARMER THAN WHAT IS EXPECTED AROUND SUNRISE FRIDAY MORNING.
335 PM CST FRI DEC 4 2015 MID-AFTERNOON SFC ANALYSIS SHOWS HIGH PRESSURE PLANTED OVER THE OHIO VALLEY. WATER VAPOR IMAGERY SHOWS WEAK RIDGING UPSTREAM OVER TX/SRN PLAINS. THE SRN PLAINS RIDGE WILL PUSH EWD IN RESPONSE TO A STRONG TROF PUSHING OUT OF THE ROCKIES. BY MID-WEEK THE HIGH IS PROGGED TO PUSH OFF TO OUR EAST.
A COLD FRONT WILL CROSS FROM THE WEST AND NORTH TONIGHT THROUGH SATURDAY NIGHT DROPPING READINGS WITHIN A FEW DEGREES EITHER SIDE OF NORMAL OVER THE WEEKEND. AN UPPER LEVEL TROUGH PASSING NORTH OF NEW MEXICO COULD TRIGGER A FEW SNOW SHOWERS IN THE MOUNTAINS NEAR THE COLORADO BORDER SATURDAY.
THE LACK THEREOF OF CLOUD COVER SERVING AS A THERMAL BLANKET WILL ALLOW THE SUNS RADIATIONAL ENERGY TO ESCAPE THE LOWER REACHES OF OUR ATMOSPHERE CAUSING TEMPERATURES TO FALL TO NEAR THE POINT OF FREEZING TONIGHT FOR THE MIDSOUTH. THE COUNTIES NEAR THE TENNESSEE RIVER HAVE THE BEST CHANCE OF SEEING SUB FREEZING TEMPS.
Highs both afternoons will top out in the lower to middle 50s. Lows tonight will drop into the lower 30s under clear skies and light winds.
1019 AM CST FRI DEC 4 2015 SATELLITE IMAGERY/SFC OBS CORROBORATING REGIONAL MORNING SOUNDINGS WHICH SHOW NOTHING BUT DRY AIR THROUGH THE COLUMN AS HIGH PRESSURE PREVAILS. HIGH PRESSURE RIDGING THROUGH THE OHIO VALLEY. BROAD AREA OF HIGH PRESSURE EXTENDS FROM THE ROCKIES TO THE EAST COAST AND DOWN INTO THE GULF COAST STATES.
THERE IS VERY LITTLE AVAILABLE MOISTURE WITH THIS SYSTEM THUS I DO NOT EXPECT MUCH PRECIPITATION TO ACCOMPANY THE ASSOCIATED COLD FRONT.
RIDGE SHIFTS EAST AS THE NEXT SHORT WAVE OVER THE PAC NW DIGS SOUTH OVER THE 4 CORNERS REGION AND CENTRAL PLAINS DURING THE SHORT TERM. THE ONSHORE FLOW WILL MODIFY TEMPS A BIT RISING LOW TEMPERATURES INTO THE LOW 50S FOR TONIGHT WITH INCREASE IN CLOUDS EARLY SATURDAY.
EXPECT THIS SYSTEM AND ASSOCIATED COLD FRONT TO REACH THE LOCAL AREA AROUND THE TAIL END OF THE SHORT TERM PERIOD. EXPECT A COOLER DAY. TEMPERATURES WILL BE ON THE WARMER SIDE OF NORMAL.
THE BASE OF A BROAD UPPER TROUGH OVER THE SOUTHEAST STATES WILL MOVE EAST OVER THE WESTERN ATLANTIC THROUGH LATE SATURDAY AFTERNOON. A WEAK UPPER RIDGE OVER THE SOUTHERN PLAINS WILL ALSO MOVE EAST.
1027 AM CST FRI DEC 4 2015 SUNNY SKIES AND LGT EASTERLY WINDS RESULT OF LARGE OHIO VALLEY HIGH PRESSURE WHICH STRECHES SWWD ACROSS OUR REGION. SOME PATCHY FOG OR PATCHY FREEZING FOG WILL BE POSSIBLE IN A FEW LOCATIONS THROUGH 04/14Z. 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.
A SHORT WAVE TROUGH. MEANWHILE THE REMAINDER OF THE AREA WILL BE IN THE LOWER AND MID 30S. THERE MAY BE EVEN A FEW LOCATION THAT CLIMB INTO THE LOWER 50S.
234 PM EST FRI DEC 4 2015 RELATIVELY QUIET FCST PERIOD ON TAP AS REGIME WILL BE DOMINATED BY A STRONG RIDGE ACROSS THE EAST CONUS.
/ISSUED 344 AM CST FRI DEC 4 2015/ MEAGER RIDGING ALOFT IS SET TO OVERSPREAD THE AREA THIS AFTERNOON AHEAD OF A STUBBORN.
PASSAGE OF PAC TROF TO OUR WEST WILL BRING A COUPLE INCHES OF SNOW TO THE BEARTOOTH ABSAROKAS TONIGHT. INCREASED SOUTHWEST FLOW ALOFT WILL BE OVER THE REGION TODAY AHEAD OF A QUICK MOVING TROF THAT MOVES THROUGH TOMORROW. DOWNSLOPE WINDS INTO THE PLAINS SHOULD INHIBIT PRECIPITATION FOR THE LOWER ELEVATIONS WITH ONLY ENHANCED CLOUD COVER AT TIMES. TEMPERATURES THIS AFTERNOON WILL REACH THE LOW TO MID 40S. TROF CROSSES THE AREA SATURDAY. BUT THE TROF LOSES MUCH OF ITS MOISTURE AS WINDS ALOFT TURN NORTHWESTERLY. OUTSIDE OF A BIT COOLER TEMPERATURES NOT MUCH IMPACT FROM THIS SYSTEM.
1210 PM EST FRI DEC 4 2015 DRY HIGH PRESSURE WILL REMAIN ACROSS THE REGION THROUGH THE REST OF THE WEEK.
A STALLING COLD FRONT IS JUST NORTH OF THE FLORIDA KEYS. THE HIGHEST WINDS ARE AT PULASKI SHOAL AND AVERAGE NEAR 15 KNOTS.
332 PM EST FRI DEC 4 2015 A LARGE AREA OF CANADIAN HIGH PRESSURE WILL DRIFT SLOWLY EAST ACROSS THE REGION THROUGH THE WEEKEND PROVIDING SUNNY SKIES AND SLOWLY MODERATING TEMPERATURES.
RIDGING EXTENDS FROM THE OHIO RIVER VALLEY INTO SOUTHEAST MN THIS MORNING. THIS ALONG WITH A SOUTHERLY WIND SHOULD WARM READINGS THE THE LOWER AND MID 40S MOST AREAS. SOME INDICATION OF STRATUS DEVELOPMENT OUT AHEAD OF THE COLD FRONT AS IT SWEEPS EAST OVER THE DAKOTAS LATER TONIGHT. A WEAK TROUGH IS STILL EXPECTED TO SWING THROUGH SATURDAY.
A COLD FRONT WILL BRING BREEZY WINDS TO OUR AREA TODAY WITH COOLER TEMPERATURES TONIGHT AND ON SATURDAY.
1247 PM EST FRI DEC 4 2015 HIGH PRESSURE WILL BRING DRY WEATHER AND SLOWLY MODERATING TEMPERATURES THROUGH THE WEEKEND. 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.
342 PM EST FRI DEC 4 2015 MARINE HIGH PRESSURE WILL REMAIN IN CONTROL OF THE AREA THROUGH THE WEEKEND AND PRODUCE FAIR AND MILD WEATHER FOR THIS TIME OF YEAR.
THIS WILL RESULT IN A PROGRESSIVE FLOW PATTERN WITH SEVERAL FAST MOVING SHORT WAVE TROUGHS TO PASS TO THE NORTH OF ALABAMA.
GIVEN THE STRENGTH OF WIND SPEEDS OVERNIGHT AND A SURFACE TROF ENTERING INTO THE FAR WESTERN ZONES LATE TONIGHT. THE SHORT TERM FORECAST REMAINS DRY WHILE HIGH PRESSURE AT THE SURFACE AND ALOFT IS BUILDING INTO THE REGION.
LARGE HIGH PRES RIDGE FM THE OHIO VALLEY SW ACRS LA/TX COMBINED WITH DRY AIRMASS WILL MAINTAIN VFR CONDITIONS AND NELY WINDS LESS THAN 10 KT THROUGH THE PERIOD. /ISSUED 1019 AM CST FRI DEC 4 2015/ SATELLITE IMAGERY/SFC OBS CORROBORATING REGIONAL MORNING SOUNDINGS WHICH SHOW NOTHING BUT DRY AIR THROUGH THE COLUMN AS HIGH PRESSURE PREVAILS. HIGH PRESSURE RIDGING THROUGH THE OHIO VALLEY. BROAD AREA OF HIGH PRESSURE EXTENDS FROM THE ROCKIES TO THE EAST COAST AND DOWN INTO THE GULF COAST STATES.
249 PM EST FRI DEC 4 2015 DRY HIGH PRESSURE WILL REMAIN ACROSS THE REGION THROUGH THE REST OF THE WEEK.
147 PM EST FRI DEC 4 2015 HIGH PRESSURE IN CONTROL THROUGH THE WEEKEND.
322 PM EST FRI DEC 4 2015 A LARGE RIDGE OF HIGH PRESSURE OVER THE LOWER OHIO RIVER VALLEY FRIDAY AFTERNOON WILL BUILD NORTHEAST AND BECOME CENTERED OVER PENNSYLVANIA FOR THIS WEEKEND.
AND EFFECTIVELY FLOODING THE LOWER 48 WITH MILD CONDITIONS. THERE IS A VARIETY OF LONGER WAVE TROUGHS TO DEAL WITH WORKING THROUGH THE FLOW.
NORTHEASTERLY WINDS OF 5 TO 10 MPH WILL OCCUR ON THE SOUTHERN SIDE OF THIS HIGH TODAY. IT WILL BE A BIT WARMER TODAY.
234 PM EST FRI DEC 4 2015 HIGH PRESSURE IN CONTROL THROUGH THE WEEKEND.
RIDGING BOTH SURFACE AND ALOFT WILL CONTINUE THROUGH SATURDAY. AND SMALL DEWPOINT DEPRESSIONS WILL ALLOW PATCHY FREEZING FOG TO DEVELOP. LOWS AGAIN SATURDAY NIGHT NEAR FREEZING TO SEVERAL DEGREES BELOW FREEZING IN THE NE TN VALLEYS.
1019 AM MST FRI DEC 4 2015 AN UPPER TROF ALONG THE WEST COAST WILL MOVE EASTWARD TODAY. GUSTY WINDS CAN BE EXPECTED OVER THE HIGHER TERRAIN TODAY. THE WEATHER WILL REMAIN DRY TODAY AND HIGH TEMPS WILL BE ABOVE AVERAGE WITH 50S OVER THE SOUTHEAST PLAINS AND 40S IN THE HIGH VALLEYS. THAT UPPER TROF WILL CONTINUE MOVING EASTWARD TONIGHT AND IS EXPECTED TO NEAR THE WESTERN CO BORDER BY 12Z SAT. GENERALLY LIGHT PRECIPITATION AND COOLER TEMPERATURES.
A COLD FRONT WILL BRING BREEZY WINDS TO OUR AREA THROUGH EARLY EVENING WITH COOLER TEMPERATURES TONIGHT AND ON SATURDAY.
INCREASED SOUTHWEST FLOW ALOFT WILL BE OVER THE REGION TODAY AHEAD OF A QUICK MOVING TROF THAT MOVES THROUGH TOMORROW. DOWNSLOPE WINDS INTO THE PLAINS SHOULD INHIBIT PRECIPITATION FOR THE LOWER ELEVATIONS WITH ONLY ENHANCED CLOUD COVER AT TIMES. TEMPERATURES THIS AFTERNOON WILL REACH THE LOW TO MID 40S. TROF CROSSES THE AREA SATURDAY. BUT THE TROF LOSES MUCH OF ITS MOISTURE AS WINDS ALOFT TURN NORTHWESTERLY. OUTSIDE OF A BIT COOLER TEMPERATURES NOT MUCH IMPACT FROM THIS SYSTEM.
HIGH PRESSURE OVER THE TENNESSEE TO OHIO VALLEY IN CONTROL TODAY RESULTING IN MILD SOUTHWESTERLY FLOW. GIVING WAY TO A COLD FRONT TOMORROW. MILD TODAY WITH SOUTHWEST WINDS OF 10-15 MPH AND HIGHS IN THE LOW 40S. / COLD FRONT TOMORROW WILL BRING INCREASING CLOUDS A SLIGHT CHANCE FOR SHOWERS IN THE AFTERNOON. ON THE SYNOPTIC SCALE A STRONG MID-LEVEL RIDGE IS IN PLACE OVER THE NORTHERN PLAINS. WITH THE UPPER HIGH CENTERED OVER THE UPPER MISSISSIPPI VALLEY. THIS RIDGE MOVES EAST ACROSS THE UPPER GREAT LAKES TODAY FOLLOWED BY NEGATIVELY TILTED TROUGH AXIS TONIGHT. THOUGH THE AIRMASS IN THIS REGIME ON SATURDAY IS NOT AS WARM AS THE AIRMASS ASSOCIATED WITH THE MID-LEVEL RIDGE TODAY. SO WHILE BOTH DAYS HAVE SOUTHWEST FLOW TODAY WILL PROBABLY BE THE WARMER OF THE TWO. A COLD FRONT MOVES THROUGH SATURDAY ASSOCIATED WITH THE TROUGH AXIS.
1226 PM EST FRI DEC 4 2015 HIGH PRESSURE IN CONTROL THROUGH THE WEEKEND.
Moderate to heavy snow will be possible in the mountains, and moderate rain will be possible for the lowlands. /Pelatti 18Z TAFS: Minor small and weak disturbances rotating around and behind a very slow exiting trof of low pressure over the aviation area will keep some minor shower activity going, mostly in the form of spotty light snow showers. Since this is not a typical high pressure ridge stagnant fog and low clouds setup but rather fog and low clouds under a cluttered trof with light showers in it the confidence in forecasting the appearance and exit of both fog and low clouds is low.
342 PM CST FRI DEC 4 2015 AN UPPER TROUGH DIGGING ACROSS THE WEST COAST INTO THE GREAT BASIN WILL SWING EASTWARD TONIGHT. THUS DISPLACING A SHORT ROUND OF RIDGING ALOFT. A LEE TROUGH ACROSS EASTERN COLORADO WILL SLIDE SOUTH AND ATTEMPT TO VEER WINDS SOUTHWEST. WARMING H85 TEMPERATURES AND DOWNSLOPE BREEZES SHOULD PROMOTE TEMPERATURES WARMING INTO THE LOW-MID 60S.
TODAY THROUGH SATURDAY NIGHT UPPER LEVEL ANALYSIS HAS BROAD RIDGE OVER THE CENTRAL CONUS. AND A BROAD TROF OFF THE WEST COAST. HIGH PRESSURE RESIDES ACROSS THE MIDWEST WITH A LEE TROF ACROSS CENTRAL MONTANA AND WYOMING. HIGHS WILL BE IN THE LOWER 40S TO AROUND 50. ESPECIALLY IN THE LOWER VALLEYS AND ACROSS SOUTH CENTRAL SOUTH DAKOTA. UPPER LEVEL TROF CROSSES THE NORTHERN PLAINS ON SATURDAY. TEMPERATURES WILL BE SLIGHTLY COOLER.
252 PM EST FRI DEC 4 2015 A LARGE RIDGE OF HIGH PRESSURE OVER THE LOWER OHIO RIVER VALLEY FRIDAY AFTERNOON WILL BUILD NORTHEAST AND BECOME CENTERED OVER PENNSYLVANIA FOR THIS WEEKEND.
AN UPPER LEVEL TROF WILL MOVE ACROSS CENTRAL AND SOUTHWEST MONTANA TODAY.
617 AM EDT FRI JUN 5 2015 A WEAK COLD FRONT WILL DROP DOWN ACROSS THE AREA THROUGH TONIGHT.