Aikyam-Lab/Synoptic-Bench huggingface dataset:
The western ridge/eastern trough pattern will continue through today and tonight.
MEANWHILE MUCH WARMER TEMPERATURES WILL SPREAD ACROSS KANSAS ON WEDNESDAY. AS PREMIUM WESTERLY DOWNSLOPE EFFECTS HELP BOOST THE WARMING OF THE LOW LEVELS.
TEMPERATURES WILL NOT FALL BELOW FREEZING ACROSS THE NORTH FOR A COUPLE MORE HOURS.
Strong high pressure will remain over the region this week.
233 AM MST TUE FEB 9 2016 AN UPPER LEVEL RIDGE WILL REMAIN STAGNANT OVER THE WESTERN CONUS THROUGH MOST OF THE WEEK. COULD BE WARMER THOUGH DEPENDING ON HOW QUICK THE SNOWPACK MELTS WHICH WILL HAVE A HAND IN MIXING THE WARMER TEMPS DOWN TO THE SFC. KEPT THE FORECAST CLOSE TO THE LOWER END OF GUIDANCE AS A DECENT SNOW PACK IS STILL IN PLACE.
1023 PM MST MON FEB 8 2016 AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL BE OVER THE WESTERN U. TEMPS ARE EXPECTED TO BE WARMER ON TUESDAY AND WILL BE ABOVE AVERAGE. THE UPPER PATTERN WILL GENERALLY BE DOMINATED BY HIGH PRESSURE OVER THE WESTERN CONUS. WHILE A TROUGH SITS ALONG THE EAST COAST.
317 AM CST TUE FEB 9 2016 UPPER LOW OVER THE GREAT LAKES WILL SPIN A FEW DISTURBANCES TOWARDS THE TN VALLEY TODAY. ESPECIALLY IN THE HIGHER TERRAIN LOCATIONS. OTHERWISE EXPECT A VERY COLD DAY WITH HIGHS IN THE LOWER 30S IF WE ARE LUCKY. FOR TONIGHT THE UPPER LOW PUSHES EAST OF THE CWA TAKING THE CHC OF SN WITH IT.
1140 PM CST MON FEB 8 2016 IMPROVEMENT IS THE NAME OF THE GAME IN THE WEATHER DEPARTMENT HEADING INTO MIDWEEK AND BEYOND AS DEEP UPPER TROUGHING FIRMLY IN PLACE AT THE MOMENT VERY SLOWLY PULLS TO THE EAST.
A STRONG UPPER LEVEL RIDGE AND LOW LEVEL OFFSHORE FLOW WILL BRING ONE MORE SUNNY AND MILD DAY TO WESTERN WASHINGTON ON TUESDAY. SOUTHWEST FLOW ALOFT WILL DEVELOP TUESDAY AS THE RIDGE MOVES EAST. THE STRONG UPPER RIDGE OVER W WA THIS EVENING COMBINED WITH LOW LEVEL OFFSHORE FLOW WILL BRING ONE MORE SUNNY AND MILD DAY TO W WA ON TUESDAY. TUESDAY MORNING LOWS SHOULD BE A LITTLE WARMER. THE UPPER LEVEL RIDGE WILL CONTINUE DRIFTING SLOWLY E THROUGH TUESDAY. THE DEPARTING RIDGE WILL ALLOW SW FLOW ALOFT TO DEVELOP OVER W WA WHICH WILL ALLOW WEAK WEATHER SYSTEMS EMBEDDED IN THE SW FLOW TO REACH THE AREA THE REST OF THE WEEK. THE GFS AND NAM HAVE BEEN CONSISTENT IN SHOWING A LITTLE LIGHT RAIN FROM THIS TROUGH.
625 PM CDT SAT SEP 12 2015 ALOFT: AN ANOMALOUSLY DEEP TROF WAS CURRENTLY OVER THE ERN USA WITH A FLAT RIDGE/ZONAL FLOW OVER THE W. THIS HIGH WILL DRIFT SE TONIGHT AND BE OVER THE TN VALLEY BY SUNSET TOMORROW. A CANADIAN COLD FRONT WILL SAG INTO MT/ND. A SIGNIFICANT SHIFT IN THE LONGWAVE PATTERN IS EXPECTED THROUGH THE EXTENDED PERIODS AS A TROUGH OF LOW PRESSURE DEEPENS ACROSS THE WEST COAST AND SOUTHWESTERLY FLOW ALOFT IS REALIZED ACROSS THE LOCAL AREA.
/ISSUED 248 PM EDT SAT SEP 12 2015/ LATEST SURFACE ANALYSIS SHOWS A MUCH ADVERTISED COLD FRONT NEAR A COLUMBUS TO MACON TO LOUISVILLE LINE AND SLOWLY PUSHING SOUTHWARD. STRONG VORTICITY TRAVERSING THROUGH THE BASE OF A DEEPENING UPPER TROUGH ACROSS THE OHIO AND TN VALLEYS WILL SQUEEZE OUT SUFFICIENT MOISTURE TO PRODUCE PERIODS OF SCATTERED TO BROKEN MID LEVEL CLOUDINESS BEHIND THE FRONT THROUGH THIS EVENING. A MUCH COOLER AIR MASS WILL SPREAD OVER THE REGION.
1158 PM CDT SAT SEP 12 2015 LITTLE SHORT TERM CONCERN AS HIGH PRESSURE RETREATS OVER THE AREA. ANY CUMULUS WILL DISSIPATE THIS EVENING LEAVING SOME HIGH CLOUDS FROM TIME TO TIME INTO SUNDAY AS SOME MOISTURE TOPS THE WESTERN CONUS RIDGE AND SPILLS SOUTHEAST. SUNDAY SHOULD BE WARMER WITH S/SW WINDS INCREASING DURING THE LATE MORNING/AFTERNOON MAKING FOR SOME BREEZY CONDITIONS.
BUT ONLY GRADUALLY WIND THE POPS DOWN FROM WEST TO EAST THROUGH THE REST OF THE OVERNIGHT WITH THE UPPER LEVEL LOW CENTER SO CLOSE BY. WILL ASSESS THE LOWS A BIT LATER THIS EVENING AS WELL. DEEP TROUGH REMAINS ANCHORED OVER THE OHIO RIVER VALLEY THIS AFTERNOON WITH THE COLDEST AIR OF THE SEASON WELL ENTRENCHED ACROSS THE AREA. ACTIVITY WILL SLOWLY DIMINISH BY LATE EVENING AND OVERNIGHT AS HIGH PRESSURE BEGINS TO WORK IN FROM THE WEST. HIGH PRESSURE WILL MAKE EVEN MORE PROGRESS ON SUNDAY WITH SKIES CLEARING. UPPER LEVEL RIDGING WILL BEGIN TO TAKE HOLD OF THE REGION TO START OFF THE EXTENDED. THIS UPPER LEVEL RIDGE WILL EXPAND AND STRENGTHEN THROUGH MID WEEK. THE UPPER LEVEL RIDGING WILL BEGIN TO BREAK DOWN.
1230 AM EDT SUN SEP 13 2015 THE AVIATION SECTION HAS BEEN UPDATED BELOW SCATTERED SHOWERS WILL END BY EARLY EVENING AS AN UPPER LOW MOVES OFF TO THE EAST. HIGH PRESSURE WILL THEN BUILD INTO THE OHIO VALLEY SUNDAY. WITH DRY AND PROGRESSIVELY WARMER WEATHER ANTICIPATED THROUGH MUCH OF THE UPCOMING WEEK.
758 PM EDT SAT SEP 12 2015 AN UPPER TROUGH WILL KEEP US IN A COOL AND UNSETTLED WEATHER PATTERN THROUGH THE REMAINDER OF THE WEEKEND.
NEAR THE COOLER END OF GUIDANCE. HIGHS AROUND 5 DEGREES WARMER THAN SATURDAY LOOK TO BE ON TARGET.
A few cumulus were popping up over the eastern Ozarks, but most of the area had abundant sunshine and temperatures in the mid to upper 60s, with dewpoints in the low to mid 40s. Currently have lows from the low 40s east to around 50 or low 50s in the far west.
DIPPING INTO THE LOW TO MID 40S WITHIN THE FAR INTERIOR TO THE UPPER 50S ALONG THE COAST.
THE BOUNDARY WILL CONTINUE TO PUSH SOUTHWARD AND STALL ACROSS THE NORTH-CENTRAL PENINSULA TONIGHT AS THE UPPER- LEVEL TROUGH AXIS CONTINUES TO SWING EASTWARD TOWARD THE U. CURRENTLY EXPECT A PERIOD OF DRY WEATHER FOR THE FIRST PART OF THE OVERNIGHT WITH SHOWERS AND THUNDERSTORMS THEN POSSIBLE INTO THE EARLY MORNING HOURS AND THROUGH MUCH OF SUNDAY AS A COLD FRONT SETTLES INTO THE NORTH- CENTRAL FLORIDA PENINSULA. A COLD FRONT APPROACHING FROM THE NORTHWEST WILL GENERATE SHOWERS AND THUNDERSTORMS TONIGHT THROUGH THE FIRST PART OF SUNDAY. WITH RAIN CLEARING THE WATERS FROM NORTH TO SOUTH LATER SUNDAY AFTERNOON AS HIGH PRESSURE BUILDS OVER THE SOUTHEAST U.
At 02Z, a cooler and drier air mass was beginning to enter the northwest parts of our forecast area behind a cold front. Overnight the cold front should push through the entire area, with temperatures falling to the mid-50s in southeast Alabama, to the mid-60s in the eastern Florida Big Bend.
DIPPING INTO THE LOW TO MID 40S WITHIN THE FAR INTERIOR TO THE UPPER 50S ALONG THE COAST. 47 HIGH PRESSURE BUILDING OVER THE STATE FROM THE NORTH PUSHING DRIER AIR OVER SETX. DRIER AIR MIXING DOWN THIS AFTERNOON AND DEW POINTS HAVE FALLEN TO THE LOWER 50S ACROSS THE NORTH AND MID 60S THROUGH HOUSTON. A VERY PLEASANT DAY OUT THERE ACROSS SOUTHEAST TEXAS WITH THE DIFFUSE COLD FRONT MOVING INTO THE GULF. UPPER RIDGING OVER THE WESTERN U.
However, if the mid-level clouds arrive before the low stratus develops, we may see only MVFR conditions. /ISSUED 354 PM CDT SAT SEP 12 2015/ (Tonight and Sunday) A cold front that passed through the area earlier is now located well south of the forecast area early this afternoon with current temperatures around 10 degrees cooler than this time yesterday. With surface winds swinging back to the south overnight, looking for morning temperatures tomorrow only a few degrees cooler than this morning over most of the forecast area. Expecting slightly warmer temperatures over most of the Big Country associated with some increasing clouds tonight. By tomorrow afternoon the upper ridge will begin to build back over the area with afternoon highs warming back into the lower 90s under mostly sunny skies. High pressure aloft dominates Texas for the next 7 days.
A MINOR TROUGH STILL APPARENT ON WATER VAPOR ACROSS ERN CO THIS AFTN COULD AID IN GENERATING SOME SHOWERS EARLIER THAN EXPECTED TONIGHT IN OUR NERN COUNTIES. SUNDAY WILL SEE A CHANGE TO MUCH WARMER SW WINDS FROM THE SURFACE TO 700 MB WHILE SOME NW FLOW IS RETAINED FROM 500 MB AND ABOVE. UPPER LEVEL FLOW WILL BE RATHER WEAK AS WELL WITH THE AXIS OF THE MAIN RIDGE TO THE NORTH AND WEST OF THE REGION.
HIGH PRESSURE RIDGING IN FROM THE TENNESSEE VALLEY WILL MAINTAIN CAVOK WITH LIGHT WINDS. DRY AIR TO DOMINATE AS HIGH PRESSURE PUSHES IN FROM THE OZARKS. /ISSUED 321 PM CDT SAT SEP 12 2015/ HIGH PRESSURE BUILDING IN ACROSS THE REGION FROM THE NORTH. BRINGING PLEASANT COOLER TEMPERATURES AND MOSTLY SUNNY SKIES TODAY.
UPPER LEVEL CLOUDS ACROSS WESTERN AND CENTRAL MN WILL CONTINUE TO PUSH SOUTH- SOUTHEASTWARD AS H5/H4 RIDGING BUILDS IN FROM WEST. THE MAIN UPPER TROUGH OVER THE GREAT LAKES WILL CONTINUE TO PULL FURTHER AWAY FROM OUR REGION. EVEN WITH CLEAR SKIES WE SHOULD HAVE SOME DECENT MIXING WITH SOUTHWEST WINDS AT THE SURFACE THANKS TO A TROUGH DIGGING INTO EASTERN MONTANA. A COLD FRONT WILL BE MOVING INTO NORTHWESTERN PARTS OF THE STATE. BUT OUR CWA WILL REMAIN FIRMLY IN THE WARM SECTOR WITH 850MB TEMPS IN THE LOW 20S C. THE COLD FRONT WILL COME DOWN INTO THE NORTHWESTERN COUNTIES SUNDAY NIGHT AND DROP READINGS BACK BELOW 50.
RADAR WAS SHOWING A FEW SHOWERS IN THE LOWER OHIO VALLEY TRACKING SOUTHEAST.
HIGH PRESSURE ALOFT WILL KEEP SKIES CLEAR TO MOSTLY CLEAR FOR MUCH OF THE FORECAST AREA TONIGHT. HIGH PRESSURE ALOFT WILL KEEP SKIES MOSTLY CLEAR TONIGHT THROUGH EARLY SUNDAY AFTERNOON WITH WIDESPREAD VFR CONDITIONS PREVAILING.
DEEP UPPER TROUGH STILL YET TO SWING ACROSS THE SOUTHERN APPALACHIANS TONIGHT INTO EARLY SUNDAY.
938 PM EDT SAT SEP 12 2015 HIGH PRESSURE WILL MOVE EAST OF THE REGION TONIGHT.
1037 PM EDT SAT SEP 12 2015 LOW PRESSURE APPROACHES FROM THE SOUTHWEST THIS EVENING AND THEN LIFTS NORTHEAST ALONG A FRONTAL BOUNDARY. HIGH PRESSURE BUILDS EAST FOR THE UPCOMING WEEK. SE FLOW MAY GUST UP TO 20 MPH THIS EVENING AS THE GRADIENT WINDS TIGHTEN AHEAD OF THE LOW. WINDS WILL THEN RAMP DOWN AS WEAK LOW PRESSURE RESIDES OVER THE AREA. OVERNIGHT LOWS WILL RANGE FROM THE LOWER 60S INLAND. ANOTHER WEAK FRONTAL WAVE REMAINS ACROSS THE AREA ON SUN IN RESPONSE TO A DIGGING UPPER TROF APPROACHING FROM THE OH AND TN VALLEYS. LIFT ASSOCIATED WITH THE INCOMING UPPER TROF SHOULD BE SUFFICIENT FOR WIDESPREAD SHOWERS. THE LOW COOLER CONDITIONS WORKING INTO THE AREA.
STRONG UPPER TROUGH AND ASSOCIATED VORT MAX CURRENTLY APPROACHING THE AREA AND SHOULD BE THROUGH THE AREA BY MIDNIGHT OR SO. COLD TEMPS WILL MOVE IN WITH THE TROUGH AS WELL. AFTER THE TROUGH PASSES. TEMPS WILL START TO WARM UP A BIT AS RIDGING BUILDS OVER THE REGION.
WILL ASSESS THE LOWS A BIT LATER THIS EVENING AS WELL. DEEP TROUGH REMAINS ANCHORED OVER THE OHIO RIVER VALLEY THIS AFTERNOON WITH THE COLDEST AIR OF THE SEASON WELL ENTRENCHED ACROSS THE AREA. ACTIVITY WILL SLOWLY DIMINISH BY LATE EVENING AND OVERNIGHT AS HIGH PRESSURE BEGINS TO WORK IN FROM THE WEST. HIGH PRESSURE WILL MAKE EVEN MORE PROGRESS ON SUNDAY WITH SKIES CLEARING. UPPER LEVEL RIDGING WILL BEGIN TO TAKE HOLD OF THE REGION TO START OFF THE EXTENDED. THIS UPPER LEVEL RIDGE WILL EXPAND AND STRENGTHEN THROUGH MID WEEK. THE UPPER LEVEL RIDGING WILL BEGIN TO BREAK DOWN.
UPPER LEVEL RIDGE REMAINS ACROSS THE WESTERN CONUS WITH A DEEP TROUGH ACROSS THE GREAT LAKES. THUS EXPECT LOWS VERY CLOSE OR A DEGREE OR TWO WARMER /AROUND 50. RIDGE EXPANDS EAST TOMORROW WITH A SURGE OF WARM AIR TO PUSH ACROSS THE AREA. WITH THE WEST SOARING INTO THE LOWER 90S.
759 PM EDT SAT SEP 12 2015 UPPER LOW TONIGHT SHIFTS EAST DURING SUNDAY. HIGH PRESSURE FOR MUCH OF NEXT WORK WEEK. 5H TROF AXIS TO SWING THROUGH THE FORECAST AREA TONIGHT INTO SUNDAY. AS VORTICITY MAX ROUNDS OUT BASE OF TROF IN CYCLONIC FLOW OVER WESTERN VA TONIGHT. SHALLOW STRATCU ON BACKSIDE OF TROF. HIGH PRESSURE WILL BUILD OVER THE REGION SUNDAY NIGHT AND REMAIN THROUGH MOST OF THE WORK WEEK.
1253 AM EDT SUN SEP 13 2015 AN UNSEASONABLY COLD AIRMASS OVER THE GREAT LAKES COMBINED WITH NORTH TO NORTHWEST WINDS MAY RESULT IN SOME LAKE EFFECT SHOWERS OTHERWISE FAIR WEATHER IS EXPECTED ACROSS THE AREA AS HIGH PRESSURE BUILDS IN. LOWS TONIGHT WILL BE IN THE LOWER TO MIDDLE 40S. (SUNDAY NIGHT THROUGH SATURDAY) AS THE UPPER LEVEL TROF LIFTS OUT OF THE NORTHEAST AT THE BEGINNING OF THE PERIOD WITH HEIGHT THEN BUILDING INTO MIDWEEK. BY THU A 5H WAVE TROF TRAVERSES THE NORTHERN PLAINS INTO THE GRTLKS REGION WHILE A WEAK SURFACE FRONT PUSHES INTO THE SOUTHERN GRTLKS. AS A SECOND 5H WAVE TROF MOVES TOWARD THE GRTLKS.
12Z MODELS ARE IN GOOD AGREEMENT THAT THERE WILL BE A DEEP LAYER /UP TO 7K FEET/ OF LIGHT WINDS EARLY IN THE OVERNIGHT AND THEN THE WINDS ALOFT WILL GRADUALLY INCREASE AS THE AREA MOVES ON THE WEST SIDE OF THE RIDGE. THIS LOWERED THE TEMPERATURES IN THESE AREAS INTO THE MID AND UPPER 30S. BOTH 925 AND 850 MB TEMPERATURES WILL BE AROUND 4C WARMER THAN THEY WERE THIS AFTERNOON. THIS IS ANYWHERE FROM 4 TO 8F WARMER THAN THIS AFTERNOON.
COOLING WILL BECOME MORE PRONOUNCED OVER THE NEXT FEW DAYS AS HIGH PRESSURE ALOFT IS REPLACED BY A LOW PRESSURE TROUGH AND ONSHORE FLOW. BUT GENERALLY DRY AND COOLER WEATHER IS EXPECTED.
952 PM EDT SAT SEP 12 2015 AN UPPER TROUGH WILL KEEP US IN A COOL AND UNSETTLED WEATHER PATTERN THROUGH THE REMAINDER OF THE WEEKEND.
WATER VAPOR SHOWS THE UPPER TROUGH OVER KENTUCKY MOVING SOUTHEAST TOWARDS EAST TENNESSEE. THE CELLULAR NATURE TO THE CLOUDS UNDER THE UPPER LOW SHOWS THE DEGREE OF COLD AIR ALOFT. SO EXPECT A GREATER CHANCE OVER THE HIGHER TERRAIN. CHATTANOOGA AIRPORT, TN 52 74 51 80 / 10 10 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 54 70 50 78 / 40 10 0 0 OAK RIDGE, TN 52 72 49 78 / 40 10 0 0 TRI CITIES AIRPORT, TN 52 68 44 76 / 50 10 0 0.
WARMING ALOFT WILL CONTINUE TO BUILD TONIGHT AND SUNDAY AS RIDGING FLATTENS OUT A BIT SUNDAY. WITH HIGH PRESSURE OVER THE MISSISSIPPI VALLEY. WITH WARMER AIR MOVING NORTH.
1027 PM EDT SAT SEP 12 2015 UPPER LOW TONIGHT SHIFTS EAST DURING SUNDAY. HIGH PRESSURE FOR MUCH OF NEXT WORK WEEK. 5H TROF AXIS TO SWING THROUGH THE FORECAST AREA TONIGHT INTO SUNDAY. AS VORTICITY MAX ROUNDS OUT BASE OF TROF IN CYCLONIC FLOW OVER WESTERN VA TONIGHT. SHALLOW STRATCU ON BACKSIDE OF TROF. HIGH PRESSURE WILL BUILD OVER THE REGION SUNDAY NIGHT AND REMAIN THROUGH MOST OF THE WORK WEEK.
AS THE LONGWAVE TROUGH CONTINUES TO DIG ACROSS THE SOUTHEASTERN PORTIONS OF THE CONUS. HIGH PRESSURE WILL GRADUALLY WORK ITS WAY ACROSS THE MIDDLE MISSISSIPPI RIVER VALLEY AND ALLOW BREEZY AND AT TIMES GUSTY SOUTHERLY WINDS TO RETURN TO CENTRAL AND SOUTHEAST KANSAS.
816 PM EDT SAT SEP 12 2015 AN UPPER LEVEL LOW WILL PROVIDE MUCH COOLER TEMPERATURES THIS WEEKEND.
THE DEEP TROUGH SITTING OVER THE GREAT LAKES AND EASTERN U.
THIS IS A RESULT OF A RIDGE BREAKING DOWN OVER THE WEST COAST AND BEING REPLACED WITH A TROUGH OVER THE PACIFIC NORTHWEST. THE RESULTANT SOUTHWEST FLOW AHEAD OF THE TROUGH WILL THEN BEGIN ADVECTING THE MOISTURE ASSOCIATED WITH LINDA OVER THE AREA. A SERIES OF DISTURBANCES EJECTED FROM THE TROUGH OVER THE WEST WILL BRING CLOUDS.
ELSEWHERE SOME MID AND HIGH LEVEL CLOUDS WERE OVER THE SOUTHERN PORTIONS OF THE REGION WHILE A HIGH PRESSURE SYSTEM CONTINUES TO DOMINATE OUR AREA WITH DRY CONDITIONS AND ABOVE NORMAL TEMPS.
AREAS THAT HAVE ALREADY BEEN RAIN COOLED FROM EARLIER CONVECTION WILL SEE TEMPS REMAIN FAIRLY STEADY WITH LOWS IN THE LOW TO MID 70S ACROSS THE REGION. (FROM PREV DISC) THE IMPRESSIVE TROUGH OVER THE EASTERN CONUS WILL BE IN A LIFTING PHASE AS A 250MB JET CORE NEAR 120 KNOTS RIDES UP INTO NEW ENGLAND. THIS WILL CAUSE THE TAIL END OF THE ASSOCIATED COLD FRONT TO SLOW AS IT ENTERS THE NORTHERN GULF AND NORTH FLORIDA.
VFR CONDITIONS ARE FORECAST DURING THE NEXT 24 HOURS AS HIGH PRESSURE DROPS SE INTO THE REGION.
617 PM CDT SAT SEP 12 2015 HIGH PRESSURE WILL GRADUALLY MOVE OFF TO THE EAST TONIGHT.
Did keep overnight lows a bit warmer though as there should be a fair amount of mid level cloud cover.
AREAS OF MID TO UPPER LEVEL CLOUDS ACROSS WESTERN AND CENTRAL MN WILL CONTINUE TO PUSH SOUTH-SOUTHEASTWARD AS H5/H4 RIDGING BUILDS IN FROM WEST. THE MAIN UPPER TROUGH OVER THE GREAT LAKES WILL CONTINUE TO PULL FURTHER AWAY FROM OUR REGION. EVEN WITH CLEAR SKIES WE SHOULD HAVE SOME DECENT MIXING WITH SOUTHWEST WINDS AT THE SURFACE THANKS TO A TROUGH DIGGING INTO EASTERN MONTANA. A COLD FRONT WILL BE MOVING INTO NORTHWESTERN PARTS OF THE STATE. BUT OUR CWA WILL REMAIN FIRMLY IN THE WARM SECTOR WITH 850MB TEMPS IN THE LOW 20S C. THE COLD FRONT WILL COME DOWN INTO THE NORTHWESTERN COUNTIES SUNDAY NIGHT AND DROP READINGS BACK BELOW 50.
STRONG UPPER LEVEL RIDGING WILL REMAIN OVER COLORADO THROUGH SUNDAY. A LEE-SIDE TROUGH WILL INTENSIFY THROUGH THE AFTERNOON AS LOW AND MID LEVEL TEMPERATURES WARM UP. SKIES WILL BE SUNNY AND HIGHS ACROSS THE PLAINS WILL REACH INTO THE LOWER 90S. SUBSIDENT FORCING UNDER THE RIDGE COMBINED WITH THE DRY AIRMASS IN PLACE SHOULD BE ENOUGH TO KEEP THE FORECAST AREA NEARLY CLOUD-FREE THROUGH THE NEXT 24 HOURS.
934 PM CDT SAT SEP 12 2015 COOL AND DRY HIGH PRESSURE ANCHORED ACROSS THE REGION AT THE SURFACE AND UPPER-LEVELS PROVIDING MOSTLY CLEAR SKIES.
620 PM CDT SAT SEP 12 2015 A WEAK AREA OF LOW PRESSURE CROSSING WELL NORTH OF THE REGION WILL PRODUCE GUSTY DOWNSLOPE WINDS ON THE EASTERN SIDE OF THE PRAIRIE COTEAU TONIGHT. A STRONGER LOW PRESSURE SYSTEM.
953 PM EDT SAT SEP 12 2015 THE NEAR TERM SECTION HAS BEEN UPDATED BELOW SCATTERED SHOWERS WILL END BY EARLY EVENING AS AN UPPER LOW MOVES OFF TO THE EAST. HIGH PRESSURE WILL THEN BUILD INTO THE OHIO VALLEY SUNDAY. WITH DRY AND PROGRESSIVELY WARMER WEATHER ANTICIPATED THROUGH MUCH OF THE UPCOMING WEEK.
COLD FRONT JUST NW OF THE CWA WILL PUSH ACROSS THE AREA TONIGHT WITH ADDITIONAL SHOWER ACTIVITY POSSIBLE ALONG BOUNDARY. FRONT WILL REACH OUR SE ZONES BY 12Z SUNDAY WITH CLEARING SKIES FROM THE NW ON SUNDAY AS UPPER TROUGH AXIS PUSHES EAST OF AREA BY 00Z MON. TEMPERATURES WILL BE COOLER TONIGHT BEHIND FRONT WITH LOWS IN THE LOW/MID 60S OVER SE GA. COOLER AND LESS HUMID ON SUNDAY WITH HIGHS 80-85. COLD FRONT WAS MOVING ACROSS SOUTHEAST GEORGIA EARLY THIS EVENING. LIGHT SHOWERS WERE LOCATED BEHIND THE PREFRONTAL TROUGH. SW WINDS WILL BE 15-20 KNOTS OFFSHORE THIS EVENING AHEAD OF COLD FRONT.
As high pressure shifts to the east on Sunday, southeasterly winds will return along with the start of a gradual warming trend.
921 PM EDT SAT SEP 12 2015 LOW PRESSURE APPROACHES FROM THE SOUTHWEST THIS EVENING AND THEN LIFTS NORTHEAST ALONG A FRONTAL BOUNDARY. HIGH PRESSURE BUILDS EAST FOR THE UPCOMING WEEK. SE FLOW MAY GUST UP TO 20 MPH THIS EVENING AS THE GRADIENT WINDS TIGHTEN AHEAD OF THE LOW. WINDS WILL THEN RAMP DOWN AS WEAK LOW PRESSURE RESIDES OVER THE AREA. OVERNIGHT LOWS WILL RANGE FROM THE LOWER 60S INLAND. ANOTHER WEAK FRONTAL WAVE REMAINS ACROSS THE AREA ON SUN IN RESPONSE TO A DIGGING UPPER TROF APPROACHING FROM THE OH AND TN VALLEYS. LIFT ASSOCIATED WITH THE INCOMING UPPER TROF SHOULD BE SUFFICIENT FOR WIDESPREAD SHOWERS. THE LOW COOLER CONDITIONS WORKING INTO THE AREA.
CLEAR SKIES OVERNIGHT INTO SUNDAY AS AN UPPER RIDGE PASSES ACROSS THE AREA WHILE DEAMPLIFYING. UPPER FLOW WILL TURN TO WESTERLY DURING THE DAY SUNDAY WHILE LEE TROFFING DEVELOPS OVER THE PLAINS. THIS WILL BRING SOME INCREASE IN WINDS MAINLY OVER SE WY AND PRODUCE THE HIGHER CONCERNS FOR FIRE CONDITIONS.
LOCATIONS ALONG THE BAY SHOULD NOT SEE FROST HOWEVER DUE TO THE WARMER WATERS OF THE BAY OF GREEN BAY KEEPING AIR TEMPERATURES AROUND 40.
DRY AIR TO DOMINATE AS HIGH PRESSURE PUSHES IN FROM THE OZARKS. /ISSUED 321 PM CDT SAT SEP 12 2015/ HIGH PRESSURE BUILDING IN ACROSS THE REGION FROM THE NORTH. BRINGING PLEASANT COOLER TEMPERATURES AND MOSTLY SUNNY SKIES TODAY.
A WEAK AREA OF LOW PRESSURE CROSSING WELL NORTH OF THE REGION WILL PRODUCE GUSTY DOWNSLOPE WINDS ON THE EASTERN SIDE OF THE PRAIRIE COTEAU TONIGHT. A STRONGER LOW PRESSURE SYSTEM.
All of the guidance indicates the deep upper trof that is over the region this afternoon rotating northeast into the Canadian maritimes over the next few days, while deep long wave trof digs and develops over the west coast. After a chilly start to the day, temperatures tomorrow afternoon should be topping out in the lower to middle 70s with a good deal of sunshine.
CLOUDY AND COOLER SUNDAY WITH AN INCREASING CHANCE OF SHOWERS AND THUNDERSTORMS AS THE REMNANTS OF HURRICANE LINDA MOVE THROUGH THE AREA.
1035 PM EDT SAT SEP 12 2015 CURRENTLY - A SURFACE THROUGH LOWER LEVEL RIDGE EXTENDS ACROSS THE INTO THE FLORIDA STRAITS. WHILE AN EARLY SEASON COLD FRONT MOVES INTO THE NORTHERN GULF OF MEXICO. SHORT TERM UPDATE (OVERNIGHT) - THE RIDGE WILL HOLD ACROSS THE FLORIDA STRAITS TONIGHT. FORECAST SOUNDINGS INDICATE THE LOW LEVEL INHIBITION WILL ERODE OVER THE NEXT SIX HOURS. LIGHT SOUTH TO SOUTHWEST WINDS CAN BE EXPECTED ON KEYS WATERS OVERNIGHT AS A RIDGE AXIS WILL REMAIN ACROSS THE FLORIDA STRAITS.
607 PM CDT SAT SEP 12 2015 Vorticity maximum centered between Springfield and Decatur this afternoon per water vapor imagery, within the deep upper trough that covers much of the Midwest. Drier air in the lower levels have resulted in a bit of small hail accompanying the heavier showers. Series of weak vort maxes/lobes in the mid MS river valley rotating through the bottom of the trof, with main max near Quad Cities moving SSE. Models drift the upper trof to the east into Sunday, allowing warming low and mid level flow to begin to work into state. Upper ridge begins to build toward area and slow warming trend into midweek.
1211 AM EDT SUN SEP 13 2015 HIGH PRESSURE WILL MOVE EAST OF THE REGION TONIGHT.
47 HIGH PRESSURE BUILDING OVER THE STATE FROM THE NORTH PUSHING DRIER AIR OVER SETX. DRIER AIR MIXING DOWN THIS AFTERNOON AND DEWPOINTS HAVE FALLEN TO THE LOWER 50S ACROSS THE NORTH AND MID 60S THROUGH HOUSTON. A VERY PLEASANT DAY OUT THERE ACROSS SOUTHEAST TEXAS WITH THE DIFFUSE COLD FRONT MOVING INTO THE GULF. UPPER RIDGING OVER THE WESTERN U.
1020 PM EDT SAT SEP 12 2015 THE AVIATION SECTION HAS BEEN UPDATED BELOW SCATTERED SHOWERS WILL END BY EARLY EVENING AS AN UPPER LOW MOVES OFF TO THE EAST. HIGH PRESSURE WILL THEN BUILD INTO THE OHIO VALLEY SUNDAY. WITH DRY AND PROGRESSIVELY WARMER WEATHER ANTICIPATED THROUGH MUCH OF THE UPCOMING WEEK.
BROAD UPSTREAM TROUGH BEGINS BREAKING DOWN THE RIDGE TONIGHT WITH HEIGHTS STEADILY FALLING INTO SUNDAY. STAYED A LITTLE WARMER THAN THE GUIDANCE WITH DOWNSLOPE CONDITIONS POSSIBLE SUNDAY AFTERNOON.
AREAS OF MID TO UPPER LEVEL CLOUDS ACROSS FAR EASTERN ND AND NORTHWEST MN WILL PUSH SOUTH-SOUTHEASTWARD AS H5/H4 RIDGING BUILDS IN FROM WEST. THE MAIN UPPER TROUGH OVER THE GREAT LAKES WILL CONTINUE TO PULL FURTHER AWAY FROM OUR REGION. EVEN WITH CLEAR SKIES WE SHOULD HAVE SOME DECENT MIXING WITH SOUTHWEST WINDS AT THE SURFACE THANKS TO A TROUGH DIGGING INTO EASTERN MONTANA. A COLD FRONT WILL BE MOVING INTO NORTHWESTERN PARTS OF THE STATE. BUT OUR CWA WILL REMAIN FIRMLY IN THE WARM SECTOR WITH 850MB TEMPS IN THE LOW 20S C. THE COLD FRONT WILL COME DOWN INTO THE NORTHWESTERN COUNTIES SUNDAY NIGHT AND DROP READINGS BACK BELOW 50.
THE HIGH WAS STILL CENTERED OVER THE MIDWEST. LOOKING FOR THE HIGH TO CONTINUE TO SINK SOUTH AND EAST THROUGH THE NIGHT. WITH SLIGHTLY COOLER AIR MOVING IN TOMORROW.
655 PM CDT SAT SEP 12 2015 LITTLE SHORT TERM CONCERN AS HIGH PRESSURE RETREATS OVER THE AREA. ANY CUMULUS WILL DISSIPATE THIS EVENING LEAVING SOME HIGH CLOUDS FROM TIME TO TIME INTO SUNDAY AS SOME MOISTURE TOPS THE WESTERN CONUS RIDGE AND SPILLS SOUTHEAST. SUNDAY SHOULD BE WARMER WITH S/SW WINDS INCREASING DURING THE LATE MORNING/AFTERNOON MAKING FOR SOME BREEZY CONDITIONS.
EARLIER SHOWERS HAVE FINALLY SKIRTED EAST OF MIDDLE TENNESSEE THIS EVENING AS HIGH PRESSURE CONTINUES TO BUILD IN FROM THE NW.
755 PM EDT SAT SEP 12 2015 AN UPPER LEVEL LOW WILL PROVIDE MUCH COOLER TEMPERATURES THIS WEEKEND.
OTHERWISE MOSTLY SUNNY SKIES AND COOLER CONDITIONS ACROSS THE CWA. NORTHEAST WINDS AROUND THE HIGH CONTINUE TO FUNNEL IN COOLER AND DRIER CONDITIONS ACROSS THE REGION. COOLER TEMPS ARE EXPECTED OVER THE NEXT COUPLE OF DAYS WITH LOWS IN THE MID TO UPPER 50S AND HIGHS IN THE MID TO UPPER 80S AREAWIDE. HIGH PRESSURE WILL SHIFT EASTWARD AND SOUTHERLY FLOW OF WARMER MOISTURE AIR WILL RETURN TO THE AREA.
720 PM EDT SAT SEP 12 2015 LOW PRESSURE APPROACHES FROM THE SOUTHWEST THIS EVENING AND THEN LIFTS NORTHEAST ALONG A FRONTAL BOUNDARY. HIGH PRESSURE BUILDS EAST FOR THE UPCOMING WEEK. SE FLOW MAY GUST UP TO 20 MPH THIS EVENING AS THE GRADIENT WINDS TIGHTEN AHEAD OF THE LOW. WINDS WILL THEN RAMP DOWN AS WEAK LOW PRESSURE RESIDES OVER THE AREA. OVERNIGHT LOWS WILL RANGE FROM THE LOWER 60S INLAND. ANOTHER WEAK FRONTAL WAVE REMAINS ACROSS THE AREA ON SUN IN RESPONSE TO A DIGGING UPPER TROF APPROACHING FROM THE OH AND TN VALLEYS. LIFT ASSOCIATED WITH THE INCOMING UPPER TROF SHOULD BE SUFFICIENT FOR WIDESPREAD SHOWERS. THE LOW COOLER CONDITIONS WORKING INTO THE AREA.