Aikyam-Lab/Synoptic-Bench huggingface dataset:
A RIDGE OF HIGH PRESSURE IS EXPECTED TO BUILD OVER COASTAL CALIFORNIA THIS WEEK PROMOTING DRY WEATHER AND WARM TEMPERATURES. MORNING FOG WILL REMAIN A POSSIBILITY UNDER THIS RIDGE OF HIGH PRESSURE. THE HIGH CLOUDS PASSING OVER THE AREA WILL REDUCE THE AMOUNT OF RADIATIVE COOLING OVERNIGHT INHIBITING THE RADIATIVE FOG PROCESS. BY THE END OF THE WEEK BOTH MODELS DEVELOP A SIGNIFICANT UPPER LEVEL RIDGE OVER CENTRAL AND NORTHERN CALIFORNIA. THIS RIDGE WILL PROMOTE VERY WARM. KSFO BRIDGE APPROACH. HIGH PRESSURE WILL STRENGTHEN OFF OF THE PACIFIC NORTHWEST AND NORTHERN CALIFORNIA COAST TONIGHT THROUGH MONDAY.
WE MIGHT BE RUNNING A TAD COOLER THAN PROJECTED WITH CLEAR SKIES AND CALM WINDS. SO MAY BUMP DOWN A FEW OF THE LOWS BY A DEGREE. VFR FORECAST FOR TERMINALS AS HIGH PRESSURE SETTLES IN ACROSS THE GULF COAST STATES BEHIND A FRONT. IF NOT A COUPLE DEGREES WARMER.
324 AM CST Mon Jan 19 2015 Water vapor imagery showed northwesterly flow aloft over the region as a deep mid-level trough was stretched along the Atlantic coastline. Continued to trend on the low side of guidance for dewpoint temperatures as our 00z sounding along with model soundings still show very dry conditions in the low-levels. A weak cold front should track southeastward across the forecast area this afternoon, but with the very dry airmass in place only expect a few high clouds to develop.
WELL ABOVE NORMAL TEMPERATURES ARE EXPECTED LATER IN THE WEEK AS A LARGE RIDGE OF HIGH PRESSURE AND STRONGER OFFSHORE FLOW DEVELOPS. UPPER LEVEL RIDGE OF HIGH PRESSURE CONTINUES TO FLATTEN TONIGHT. HOWEVER THE UPPER LEVEL HIGH CLOUDS MAY DISRUPT THE LOW CLOUDS AT TIMES.
1244 AM EST MON JAN 19 2015 HIGH PRESSURE BUILDS IN TODAY WITH UPSLOPE SNOW SHOWERS IN THE NORTHERN MOUNTAINS ENDING THIS MORNING.
HIGH PRESSURE WILL KEEP VFR CONDITIONS THRU THE FCST PERIOD FOR BOTH KMSL AND KHSV.
CONFIDENCE IN WIND DIRECTION IS LOW ACROSS THE PANHANDLES UNTIL 18-00Z AND BEYOND WHEN A COLD FRONT SHIFTS WINDS TO THE NORTHEAST AND INCREASES SPEEDS TO 8-10KTS.
355 AM EST MON JAN 19 2015 HIGH PRESSURE WILL BUILD IN ACROSS THE FL PENINSULA PROVIDING A CONTINUATION OF MOSTLY SUNNY AND DRY CONDITIONS.
DESPITE THE SLIGHTLY WARMER AIRMASS. HAVE KEPT MOST AREA 2-4 DEGREES WARMER THAN SUNDAY. WHICH YIELDS HIGHS FROM THE LOWER 40S NORTH AND FAR EAST.
1257 AM EST MON JAN 19 2015 HIGH PRESSURE WILL BUILD INTO THE REGION ON MONDAY.
TONIGHT: MESOSCALE MODE LIKE THE WRF-ARW AND OTHER GLOBAL MODELS LIKE THE GFS STILL CONTINUE TO SUPPORT LIGHT PRECIPITATION THROUGH THE OVERNIGHT HOURS, WITH THE HIGHEST POPS ACROSS THE NORTHERN ZONES. SOME MODELS WITH THE MOST PRECIP SHOW WARMER LOWS, WHILE THE DRIER MODELS SUPPORT LOWER VALUES.
SHOWER ACTIVITY WILL DIMINISH MONDAY AFTERNOON AS AN UPPER LEVEL RIDGE APPROACHES THE AREA.
After a cool start, with temperatures in the lower 30s, expect highs to reach the upper 60s for most of the area.
1143 PM EST SUN JAN 18 2015 A COLD FRONT OVER THE NORTHERN GREAT LAKES WILL BECOME STATIONARY NEAR LAKE ERIE LATE MONDAY.
This occurs as a broadening long wave trof digs over the mid Ms valley, in response to repeated shots of energy streaming from the Plains toward/across the Oh valley. The net effect for our FA is a slight/gradual increase in moisture in the atmospheric column, while temps cool slightly in response to the trof'ing. ridge and the northeast U. /Canadian trough. trough/dominant western ridge.
A WEAK BACK DOOR COLD FRONT WILL CONTINUE TO PUSH SOUTHWEST INTO THE FORECAST AREA THIS MORNING WITH SFC RIDGING EVENTUALLY STRETCHING FROM SOUTHERN CANADA SOUTH THROUGH LAKE SUPERIOR AND THE SPINE OF LAKE MICHIGAN BY MID DAY. TEMPS WILL BE COOLER THAN YESTERDAY.
1127 PM CST SUN JAN 18 2015 WE WILL ADD SOME FREEZING RAIN TO THE WEST AND SOUTH OVERNIGHT. THERMAL PROFILES WILL START BELOW FREEZING. WITH PERHAPS A LITTLE LIGHT FREEZING RAIN ON THE SOUTHERN EXTENT OF THE PRECIP AS THE WARM AIR MOVES IN ALOFT. A BIT MORE VERY LIGHT FREEZING RAIN/SLEET IS POSSIBLE. THE COOLER TEMP PROFILES WILL BE FARTHER NORTHEAST.
1125 PM CST SUN JAN 18 2015 MAIN CONCERN LOOKS TO BE TIMING AND STRENGTH OF SERIES OF SHORT WAVE TROUGHS AS UPPER FLOW AMPLIFIES DURING THE PERIOD. QUASI ZONAL FLOW EARLY IN THE PERIOD BECOMES MORE AMPLIFIED DURING THE PERIOD WITH NUMEROUS SHORT WAVE TROUGHS MOVING ACROSS THE REGION AND PULLING DOWN COLDER AIR AS THEY PASS.
258 AM EST MON JAN 19 2015 HIGH PRESSURE BUILDS IN TODAY.
248 AM EST MON JAN 19 2015 LOW PRESSURE WILL CONTINUE NORTH INTO EASTERN CANADA TODAY.
AT THE SAME TIME A STRONG MID/UPPER LEVEL RIDGE BUILDS INTO THE WESTERN PORTION OF THE COUNTRY.
MODEL SOUNDINGS AND A CONSENSUS DRYING TREND BY MOST WOULD SUGGEST LESS MOISTURE IN THE LOW LEVELS. UPPER AIR ANALYSIS LAST EVENING SHOWED A WEAK RIDGE BULGING UP FROM MEXICO OVER TEXAS WITH A BROAD SHALLOW TROUGH OVER THE NORTHERN ROCKIES. THE UPPER TROUGH IS EXPECTED TO PROGRESS TO THE EAST DURING THIS PERIOD AND PUSH THE COLD FRONT THROUGH OUR AREA.
930 AM EDT FRI APR 3 2015 HIGH PRESSURE CONTINUES TO DOMINATE. A COLD FRONT WILL THEN TRAIL SOUTHWESTWARD THROUGH THE TENNESSEE VALLEY AND TOWARDS THE NORTHWESTERN GULF COAST. AN UPPER RIDGE CENTERED OVER CENTRAL MEXICO WILL DRIFT EASTWARD THROUGH THE PERIOD. A COLD FRONT WILL PUSH INTO NORTHERN FLORIDA AND THEN STALL ACROSS CENTRAL FLORIDA SATURDAY NIGHT.
SEAS WL DIMINISH AS HIGH PRESSURE BUILDS OVER THE WATERS INTO TONIGHT.
1252 PM EDT FRI APR 3 2015 A WAVE OF LOW PRESSURE WILL RIDE NORTHEASTWARD ALONG A FRONT STALLED ACROSS CENTRAL PENNSYLVANIA THROUGH TONIGHT.
942 AM EDT FRI APR 3 2015 A COLD FRONT JUST SOUTH OF THE AREA WILL STALL ACROSS SOUTHERN OHIO TODAY AS AN AREA OF LOW PRESSURE MOVES NORTHEAST ALONG THE BOUNDARY.
1113 AM EDT FRI APR 3 2015 A WAVE OF LOW PRESSURE WILL RIDE NORTHEASTWARD THIS AFTERNOON AND TONIGHT ALONG A STALLED FRONT LYING ACROSS CENTRAL PENNSYLVANIA.
THE ASSOCIATED CYCLOGENESIS WILL QUICKLY MOVE ALONG THE BOUNDARY WITH ASSOCIATED FRONTAL BOUNDARY/PRE-FRONTAL TROUGH PULLING THROUGH THE AREA LATE TODAY AND EVENING. CHATTANOOGA AIRPORT, TN 76 47 61 36 / 30 80 10 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 75 47 58 33 / 30 80 10 0 OAK RIDGE, TN 74 45 59 33 / 40 80 10 0 TRI CITIES AIRPORT, TN 72 45 57 28 / 50 80 10 0 NC.
636 AM CDT FRI APR 3 2015 SHOWERS AND THUNDERSTORMS WILL CONTINUE TO PUSH SOUTH TODAY ALONG A COLD FRONT MAKING ITS WAY THROUGH THE STATE.
1123 AM EDT FRI APR 3 2015 PERIODS OF SHOWERS ARE EXPECTED TO CONTINUE THROUGH TONIGHT AS LOW PRESSURE AND A COLD FRONT TRACK ACROSS THE AREA. HIGH PRESSURE WILL BUILD IN FOR MUCH OF THE WEEKEND. A COLD FRONT CONTINUES IT/S SLOW ADVANCEMENT THROUGH THE UPPER OHIO VALLEY REGION. THE SURFACE WAVE AND COLD FRONT ARE PROGGED TO MOVE QUICKLY ACROSS THE AREA THIS EVENING. EXITING TO THE NORTHEAST OVERNIGHT AS THE MAIN UPPER TROUGH AXIS CROSSES.
640 AM CDT FRI APR 3 2015 LATEST WATER VAPOR SATELLITE IMAGERY INDICATING UPPER LEVEL TROUGHS OVER HUDSON BAY AND OFF THE BRITISH COLUMBIA COAST.
636 AM CDT Fri Apr 3 2015 An upper level trough is currently pushing into the central Plains early this morning which is pushing a cold front into the area. Storms are also starting to develop along the cold front across southeastern Kansas and west central Missouri. The surface cold front is expected to push out of the area by the late morning hours bringing an end to any severe risk to the area. Tonight lows will drop into the low to mid 30s as high pressure settles south over the region light winds and clear skies will develop.
849 AM EDT FRI APR 3 2015 AN APPROACHING COLD FRONT WILL STALL OUT ACROSS PENNSYLVANIA TOMORROW INTO SATURDAY. A WAVE OF LOW PRESSURE WILL FORM AND RIDE NORTHEAST ALONG THE STALLED FRONT.
714 AM EDT FRI APR 3 2015 A COLD FRONT JUST SOUTH OF THE AREA WILL STALL ACROSS SOUTHERN OHIO TODAY AS AN AREA OF LOW PRESSURE MOVES NORTHEAST ALONG THE BOUNDARY.
A NOTED COOLING TREND WILL BEGIN ON SATURDAY AS CLOUDS AND ONSHORE WINDS DEVELOP AHEAD OF AN INCOMING COLD FRONT.
1045 AM CDT FRI APR 3 2015 AT 15Z THE COLD FRONT WAS PUSHING THROUGH THE DFW METROPLEX AND STRETCHED SW TOWARDS SAN ANGELO. A PREFRONTAL TROUGH STRETCHED FROM THE ARKLATEX TO TEMPLE/JUNCTION. THE COLD FRONT WILL BE THE MAIN FOCUS FOR ANY RAIN CHANCES AND CAPPING SHOULD KEEP MUCH CONVECTION FROM FORMING.
IS EXPECTED TO DEVELOP SHORTLY AFTER 03/18Z AS A COLD FRONT MOVES ACROSS THE REGION. THE COLD FRONT SHOULD MOVE THROUGH ALL TAF SITES BY 04/03Z.
755 AM EDT FRI APR 3 2015 AVIATION RAIN SHOWERS WILL DEVELOP BY MID DAY ACROSS SOUTHERN LOWER MICHIGAN AS LOW PRESSURE MOVES TOWARD THE OHIO VALLEY.
1132 AM EDT FRI APR 3 2015 LOW PRESSURE WILL TRACK ALONG A FRONT THAT IS STRETCHED ACROSS THE AREA TODAY. THE LOW WILL MOVE OFF TO THE EAST THIS EVENING. HIGH PRESSURE WILL THEN BUILD IN FOR THE WEEKEND. LOW PRESSURE WILL TRACK ALONG THE FRONT LATER THIS AFTERNOON. AS THE LOW MOVES EAST THE FRONT WILL GO WITH IT. CHANCES OF THUNDER WILL EXIST LATER IN THE AFTERNOON IN AN AXIS OF INSTABILITY ALONG AND SOUTHEAST OF THE LOW TRACK. PRECIPITATION IS EXPECTED TO CONTINUE ON THE BACK SIDE OF THE LOW IN A DEFORMATION ZONE AS UPPER SUPPORT IN THE FORM OF ANOTHER SHORT WAVE MOVES THROUGH. CANNOT COMPLETELY RULE OUT A MIX OR BRIEF CHANGE TO SNOW BEFORE ENDING IN THE NORTH AS COLDER AIR WORKS IN BEHIND THE LOW. HIGH PRESSURE WILL BUILD IN FOR THE WEEKEND.
1123 AM CDT FRI APR 3 2015 APPROACHING COLD FRONT STILL WELL NORTHWEST EXPECTED TO PUSH ACROSS THE MID-STATE LATER TODAY. AHEAD OF A SQUALL LINE JUST PRECEDING THE COLD FRONT. A STRONG COLD FRONT WILL SWEEP ACROSS THE AREA THIS AFTERNOON AND THIS EVENING, BRINGING SCATTERED TO NUMEROUS THUNDERSTORMS.
TEMPS HAVE STAYED MUCH WARMER OVERNIGHT THAN PREVIOUSLY THOUGHT. THIS DECK OF CLOUDS COUPLED WITH ANVIL CLOUDS FROM STORMS TO OUR NW MAY LIMIT EARLY MORNING HEATING FOR A FEW HOURS UNTIL THE LOW LEVEL CLOUDS CLEAR OUT. THIS WOULD SUPPORT THE DEVELOPMENT OF SUPERCELLS THIS AFTERNOON AHEAD OF THE MAIN COLD FRONT. THE COLD FRONT IS THEN PROGGED TO RACE THROUGH THE AREA THIS AFTERNOON/EVENING WITH A SQUALL LINE FORMING JUST AHEAD OF THE FRONT. MUCH COLDER TEMPERATURES ARRIVE BEHIND THE LINE/COLD FRONT WITH TEMPERATURES DROPPING INTO THE LOW TO MID 40S BY SATURDAY MORNING. CLEAR SKIES AND COOLER TEMPERATURES FOR SATURDAY WITH HIGHS IN THE LOWER 60S.
THE 15Z SURFACE ANALYSIS INDICATED THAT THE COLD FRONT WAS EXTENDING SOUTHWEST FROM NEAR BLOOMINGTON INDIANA. THERE WILL CONTINUE TO BE BREAKS IN THE LOW CLOUDS WITH MID AND HIGH CLOUDS EXPECTED ABOVE THE LOWER LAYER THROUGH THE AFTERNOON.
A COLD FRONT THAT EXTENDED SOUTH OF A KDUC /DUNCAN OK/. COOLER.
959 AM CDT FRI APR 3 2015 THE COLD FRONT IS ON THE MOVE ACROSS NORTH TEXAS THIS MORNING. ESPECIALLY ACROSS THE LOW ROLLING PLAINS OF TEXAS WITH STRONG AND GUSTY NORTH WINDS ACROSS WEST TEXAS AND OKLAHOMA. A COLD FRONT THAT EXTENDED SOUTH OF A KDUC /DUNCAN OK/. COOLER.
1057 AM MDT FRI APR 3 2015 THE UPPER TROUGH WAS CROSSING WRN CO EARLY THIS MORNING WITH SNOW CONTINUING OVER THE NRN CO MTNS PER THE 08Z ASPEN METAR OBSERVATION AND SKI RESORT AND CDOT WEBCAMS. THE UPPER TROUGH WILL BE MOVING OFF TO THE EAST BY 12Z THIS MORNING. EXPECT SUNNY/ MOSTLY SUNNY SKIES THIS AFTERNOON TO LEAD INTO A CLEAR NIGHT TONIGHT AS A LOW AMPLITUDE RIDGE SLIDES OVERHEAD. ZONAL FLOW SETS UP ACROSS THE AREA AS LOW PRESSURE TO THE NORTHWEST AND OVER HUDSON BAY TO THE NORTHEAST KEEP MUCH OF THE NATION IN WEAK RIDGING.
920 AM MDT FRI APR 3 2015 WEAK QG ASCENT ASSOCIATED WITH AN UPPER LEVEL TROUGH COMBINED WITH WEAK UPSLOPE WILL KEEP LIGHT SNOW GOING ALONG THE FRONT RANGE FOOTHILLS AND MOUNTAINS AND PALMER DIVIDE THROUGH THE EARLY MORNING HOURS.
/ISSUED 401 AM CDT FRI APR 3 2015/ FIRST COLD FRONT MOVES THROUGH TONIGHT. EVOLUTION OF THE COLD FRONT AND CONVECTIVE INITIATION SOUTHWARD ALONG IT WILL BE NOTICEABLE AS IT FORMS TOWARD THE ARKLAMISS REGION BY 6PM TODAY THEN FARTHER SOUTH TOWARD BATON ROUGE BY MIDNIGHT FRIDAY NIGHT. THE RIDGING BEHIND THE FRONT WILL BRIDGE THE SOUTHERN END CAUSING A DYNAMICALLY COMPRESSED INVERSION TO SET UP AT ABOUT 4000' AGL.
952 AM CDT FRI APR 3 2015 /AMENDMENTS FOR DUST/ COLD FRONT IS MOVING THROUGH THE METROPLEX AIRPORTS NOW AND SOME LOCALIZED AREAS OF BLOWING DUST ARE NOW BEING OBSERVED. UPSTREAM OBSERVATIONS INDICATE THAT VISIBILITIES AND CEILINGS IMPROVE TO VFR ABOUT 50 MILES BEHIND THE COLD FRONT. COOLER.
854 AM PDT FRI APR 3 2015 WEAK OFFSHORE FLOW TODAY WILL BRING SIGNIFICANTLY WARMER WEATHER WITH THE GREATEST WARMING WEST OF THE MOUNTAINS. A LITTLE COOLER WEST OF THE MOUNTAINS ON SATURDAY AND WARMER ELSEWHERE.
A RETURN TO MVFR WILL OCCUR AS A COLD FRONT APPROACHES FROM THE NORTH. 500 MB HIGH PRESSURE CENTERED OVER THE EAST COAST OF MEXICO AND EXTENDED OVER THE RIO GRANDE VALLEY AND DEEP SOUTH TEXAS WILL PRODUCE CONTINUED DRY WEATHER.
531 AM MDT FRI APR 3 2015 THE UPPER TROUGH MOVES THROUGH THIS MORNING WITH NORTHWEST FLOW THIS AFTERNOON AND TONIGHT.
1056 AM EDT FRI APR 3 2015 LOW PRESSURE WILL MOVE EAST ALONG A FRONTAL BOUNDARY TODAY AND THIS BRING ANOTHER ROUND OF LIGHT RAIN TO THE REGION. TIME OF DAY WILL BE FAVORABLE TO KEEP PRECIPITATION ALL RAIN DESPITE SUB-FREEZING 850MB TEMPS BY MID AFTERNOON. HIGH PRESSURE STILL EXPECTED SATURDAY AND SATURDAY NIGHT. THUS CONTINUED TO SIDE TOWARD WARMER END OF GUIDANCE FOR SATURDAY WITH EXPECTED SUNNY SKIES.
1037 AM EDT FRI APR 3 2015 HIGH PRESSURE OFF THE COAST WILL DIRECT A WARM SOUTHERLY FLOW INTO THE FORECAST AREA AHEAD OF AN APPROACHING COLD FRONT.
606 AM CDT FRI APR 3 2015 THE INVERTED TROUGH THAT HELPED PRODUCE THE PRECIPITATION OVERNIGHT HAS MOVED EAST TO THE IOWA STATE LINE BY 07Z. HIGH PRESSURE WAS THE DOMINANT FEATURE OVER THE INTERMOUNTAIN WEST. HIGH PRESSURE WILL CONTINUE TO DRIFT WELL TO THE SOUTHEAST ON SATURDAY. ON THE BACKSIDE OF THE HIGH.
WENT WITH PREV IDEA OF WARMING UP SOUTH OF THE LOW IN SW HALF OF FCST AREA INTO THE 40S. WESTERLY SURFACE FLOW ALONG WITH WARM ADVECTION AHEAD OF WEAK COLD FRONT SHOULD ALLOW FOR MODEST TEMPERATURE RECOVERY ACROSS THE W-S WITH COOLER TEMPERATURES FARTHER EAST. ANY LINGERING -RASN WILL BE CONFINED TO NW MN THIS EVENING AS WEAK TROUGH SHIFTS EAST.
THE HIGH PRESSURE RIDGE HAS SETTLED JUST SOUTH OF THE REGION ACROSS CNTRL FLORIDA AND EXPECT SOUTHWEST SURFACE FLOW AT 10-15 MPH INLAND WITH HIGHS WELL INTO THE MID/UPPER 80S. WHILE THE COAST WILL SEE A LATE DAY SELY SEA BREEZE AT 10-15 MPH WITH HIGHS TOPPING OUT IN THE LOWER 80S.
1114 AM CDT FRI APR 3 2015 ADVANCING COLD FRONT JUST REACHING THE NORTHWEST TIP OF THE CWA. IS EXPECTED TO DEVELOP SHORTLY AFTER 03/18Z AS A COLD FRONT MOVES ACROSS THE REGION. THE COLD FRONT SHOULD MOVE THROUGH ALL TAF SITES BY 04/03Z.
A BROAD HIGH PRESSURE SYSTEM PREVAILS ACROSS THE WESTERN NORTH ATLANTIC. THIS WEAK UPPER LEVEL TROUGH FEATURE HAS RELAXED THE GRADIENT ALONG THE SOUTHWESTERN FLANK OF THE ATLANTIC HIGH. A WESTERN ATLANTIC RIDGE ACROSS THE GULF COAST REGION WILL DROP SOUTHEASTWARD AND RETREAT OFFSHORE THIS AFTERNOON AND TONIGHT. A SECOND HIGH PRESSURE SYSTEM WILL MIGRATE SWIFTLY EASTWARD INTO THE SOUTHEAST UNITED STATES SATURDAY.
NORTH WINDS OF 20-25 KNOTS WITH GUSTS TO 40 KNOTS WILL SCALE BACK MARKEDLY BY MIDDAY AS HIGH PRESSURE DRAWS CLOSER. /ISSUED 408 AM CDT FRI APR 3 2015/ STRONG COLD FRONT BISECTING OUR CWA AT 3 AM IS ON TRACK TO EXIT OUR SOUTHERN COUNTIES A GOOD 2-3 HOURS AHEAD OF WHAT WAS ADVERTISED BY THE 00Z MODELS. SURFACE RIDGING WILL BUILD THROUGH THE DAY BEFORE SETTING UP CAMP AFTER MIDNIGHT WITH LIGHT EASTERLY WINDS.
653 AM CDT Fri Apr 3 2015 /12Z TAFS/ A strong cold front will move south across the terminals this morning. /ISSUED 456 AM CDT Fri Apr 3 2015/ (Today and Tonight) Cooler temperatures are in store for West Central Texas today as a strong cold front moves across the area. Temperatures will be much cooler today, with afternoon highs ranging from the upper 60s north, to around 80 across far southern counties. Temperatures will be chilly overnight with lows ranging from the lower 40s across the Big Country, to the middle and upper 40s elsewhere.
1250 PM EDT FRI APR 3 2015 AVIATION RAIN SHOWERS WILL DEVELOP BY MID DAY ACROSS SOUTHERN LOWER MICHIGAN AS LOW PRESSURE MOVES TOWARD THE OHIO VALLEY.
A COLD FRONT WILL MOVE SWD ACRS THE REGION TONIGHT.
MOSTLY CLEAR TODAY AS A WEAK UPPER LEVEL RIDGE PASSES BY. COLD FRONTAL PASSAGE SATURDAY MORNING.
837 AM EDT FRI APR 3 2015 PERIODS OF SHOWERS ARE EXPECTED TO CONTINUE THROUGH TONIGHT AS LOW PRESSURE AND A COLD FRONT TRACK ACROSS THE AREA. HIGH PRESSURE WILL BUILD IN FOR MUCH OF THE WEEKEND. A COLD FRONT CONTINUE IT/S SLOW ADVANCEMENT THROUGH THE UPPER OHIO VALLEY REGION THROUGH THE EARLY MORNING BEFORE STALLING ACROSS SOUTHERN PA INTO THE MS VALLEY REGION. THE SURFACE WAVE AND COLD FRONT ARE PROGGED TO MOVE QUICKLY ACROSS THE AREA THIS EVENING. EXITING TO THE NORTHEAST OVERNIGHT AS THE MAIN UPPER TROUGH AXIS CROSSES.
SHOWERS AND THUNDERSTORMS AHEAD OF A COLD FRONT WILL MOVE FROM WEST TO EAST ACROSS THE FORECAST AREA THIS EVENING.
THIS LOW LEVEL MOISTURE COMBINED WITH DAYTIME HEATING WILL LEAD TO ANOTHER DAY OF SCATTERED CUMULUS CLOUDS DURING THE AFTERNOON HOURS. HIGH PRESSURE MOVES OVER THE AREA PRODUCING PLEASANT WEATHER CONDITIONS AND LIGHT WINDS AROUND 5 TO 10 KNOTS THROUGH THE SATURDAY EVENING.
1035 AM EDT FRI APR 3 2015 A COLD FRONT JUST SOUTH OF THE AREA WILL STALL ACROSS SOUTHERN OHIO TODAY AS AN AREA OF LOW PRESSURE MOVES NORTHEAST ALONG THE BOUNDARY.
A STRONG COLD FRONT WILL SWEEP ACROSS THE AREA THIS AFTERNOON AND THIS EVENING, BRINGING SCATTERED TO NUMEROUS THUNDERSTORMS.
1128 AM EDT FRI APR 3 2015 HYDRO RAIN SHOWERS WILL DEVELOP BY MID DAY ACROSS SOUTHERN LOWER MICHIGAN AS LOW PRESSURE MOVES TOWARD THE OHIO VALLEY.
1122 AM CDT Fri Apr 3 2015 High pressure will build across the area tonight with clearing skies and light winds. An upper level trough is currently pushing into the central Plains early this morning which is pushing a cold front into the area. Storms are also starting to develop along the cold front across southeastern Kansas and west central Missouri. The surface cold front is expected to push out of the area by the late morning hours bringing an end to any severe risk to the area. Tonight lows will drop into the low to mid 30s as high pressure settles south over the region light winds and clear skies will develop.
DRY AIR IN THE MID LEVELS AND MOISTENING LOW LEVELS MAY LEAD TO PATCHY FREEZING DRIZZLE.
UPPER RIDGE BEGINS TO MOVE IN WITH VFR DEVELOPING. FREEZING DRIZZLE DURING THIS TIME PERIOD ALSO. /ISSUED 332 PM CST MON FEB 9 2015/ TEMPERATURES HAVE STEADILY FALLEN THROUGHOUT THE DAY TODAY IN THE WAKE OF THE COLD FRONT THAT PASSED THROUGH THE MID-STATE EARLIER. SOUNDINGS INDICATE THE LOWER LEVELS ARE SATURATED UP TO 850MB MAINLY EAST OF INTERSTATE 65 THIS EVENING AND OVERNIGHT. SOUNDINGS INDICATE TEMPERATURES WILL GRADUALLY FALL BELOW FREEZING AFTER MIDNIGHT THROUGHOUT THE ENTIRE COLUMN. THUS AM THINKING A LIGHT DRIZZLE WITH A CHANGE OVER TO FREEZING DRIZZLE OR FLURRIES WILL BE POSSIBLE. SO NO MAJOR IMPACTS EXPECTED OTHER THAN SOME SLICK SPOTS ON BACKROADS AND BRIDGES ALONG THE CUMBERLAND PLATEAU.
252 AM CST Tue Feb 10 2015 High pressure ridge just to the northwest of the area will shift east, through the CWA today. Low level clouds east of the ridge continue to follow the flow around the high and based on satellite trends is moving west and southwest early this morning. The clouds could diminish some as well, but this more difficult to forecast given the strong high pressure. Winds will be on the light side and variable as the ridge moves across the area. Temps should be warmer and more around normal, in the mid to upper 30s. Trough axis currently across the Northwest Territories of Canada still progged to quickly drop southeast today and sharpen into a deep trough as a ridge axis builds along the West Coast.
COLD FRONT STILL ANTICIPATED TO MOVE THROUGH AREA LATE TONIGHT/EARLY WED. -HOWERTON GFS/ECMWF REMAIN IN SUPRISINGLY GOOD AGREEMENT WITH RIDGE BUILDING IN THE WESTERN US AND TROUGHING IN THE EAST. SENDING MUCH COOLER AIR INTO THE AREA ON SAT. THERE WAS SUFFICIENT AGREEMENT BETWEEN MODELS AND SURROUNDING OFFICES TO HEDGE COOLER THAN GUIDANCE FOR NOW.
HIGH PRESSURE ALOFT WILL DEVELOP ACROSS THE GREAT BASIN BY MIDWEEK. THE SOUTHERN HALF OF THE CWA SHOULD SEE MAINLY CLEAR SKIES TONIGHT BUT WEST CENTRAL SECTIONS WILL SEE SOME INCREASE IN CLOUDS AFTER MIDNIGHT AS THE TROUGH ALOFT SLIDES SOUTHEAST INTO CENTRAL UTAH BUY EARLY TUESDAY.
A SURGE OF COOL DRY AIR IN THE WAKE OF THE COLD FRONT WILL MAKE FOR CONSIDERABLY COOLER TEMPS TODAY. SOME TEMPS WERE EVEN WARMER SUCH AS BEAUMONT, HOWEVER AREA RECORDS WERE JUST BEYOND REACH.
A LONG WAVE RIDGE WILL THEN BUILD INTO THE AREA AND STAY AROUND A WHILE. THE EASTERN ANCHOR LOW NOW NEAR 45N 165W WILL ACT TO PUMP UP THE DOWNSTREAM RIDGE OVER THE EASTERN PACIFIC AND WEST COAST. THE LOW WILL EJECT SOME SHORT WAVES TOWARD THE WEST COAST. BUT THOSE WAVES WILL WEAKEN AND DISSIPATE AS THEY MOVE INTO THE RIDGE. EXPECT A RETURN OF STAGNANT AIR IN THE VALLEYS WITH RELATIVELY WARM RIDGES.
1254 AM EST TUE FEB 10 2015 COLD FRONT EXITS OVERNIGHT. HIGH PRESSURE TUESDAY NIGHT.
155 AM MST TUE FEB 10 2015 HIGH PRESSURE WILL CONTINUE TO DOMINATE THE WEATHER OVER THE REGION THROUGH MOST OF THIS WEEK. HIGH TEMPERATURES IN THE LOWER TO MIDDLE 80S WILL BE COMMON. WITH JUST A SHORT PERIOD OF SLIGHTLY COOLER TEMPERATURES. A TURN TOWARDS COOLER TEMPERATURES AND MORE UNSETTLED WEATHER IS POSSIBLE BY THE WEEKEND. RISING INTO THE LOW TO MID 80S AT MOST LOWER DESERT LOCATIONS.
AN INCREASING SOUTHWEST TO WESTERLY FLOW ALOFT WILL BE OVER COLORADO AS A 110+ KT JET MAX RIDES OVER THE TOP OF THE RIDGE AS IT TRANSLATES ACROSS THE STATE. WL MENTION GUSTS TO 50 MPH IN THE MOUNTAINS ABOVE TIMBERLINE AND IN THE HIGHER FOOTHILL AREAS. EVENING TEMPERATURES ON THE PLAINS NOT ALL THAT COLD EVEN WITH THE PASSAGE OF A COLD FRONT EARLIER IN THE DAY. THE SAME HOLDS TRUE FOR THE HIGH COUNTRY WHERE BUT PCPN WILL BE ALL SNOW.
1249 AM EST TUE FEB 10 2015 AVIATION MAINLY CLEAR AND COLD CONDITIONS ARE EXPECTED TONIGHT AS HIGH PRESSURE DRIFTS OVERHEAD.
CAA SHOULD STILL ALLOW MRNG LOWS TO DROP ARND THE FREEZING MARK. AFTER 18Z VFR CONDITIONS ARE EXPECTED FOR BOTH KMSL AND KHSV AS HIGH PRESSURE BUILDS ACROSS THE CWA.
/ISSUED 219 PM CST MON FEB 9 2015/ ONE MORE WARM DAY IS IN STORE TOMORROW BEFORE CHANGES COME WITH THE NEXT COLD FRONT. BEFORE THEN AN UPPER LEVEL RIDGE WHOSE AXIS IS JUST WEST OF THE FCST AREA THIS AFTERNOON WILL EWD TONIGHT AND TUESDAY. FLATTENING AS IT DOES WITH A SHORT WAVE TROUGH MOVING ACROSS THE NORTHERN AND CENTRAL ROCKIES. MEANWHILE THE INITIAL WIND SHIFT WITH THE COLD FRONT WILL SAG THROUGH THE PANHANDLE DURING THE DAY. AS A RESULT WILL SIDE TOWARD THE WARMER MAVMOS NUMBERS IN LINE WITH A 3-6 DEGREE INCREASE FOR ALL OF THE FCST AREA BAR THE NWRN ZONES WHERE THE EFFECT FROM THESE TWO FACTORS WILL BE MUCH SMALL GIVEN THEIR PROXIMITY TO THE RIDGE AND GUSTY SW WINDS THIS AFTN. WE WILL SEE SOME OCCASIONAL SHOTS OF COOLER AIR.
TYPICALLY COOLER LOCATIONS IN THE FAR NORTHWEST WILL FALL INTO THE UPPER 20S. WITH WINDS BECOMING LIGHT TUESDAY EVENING AS THE RIDGE SLIDES ACROSS THE EASTERN U. 08/MK /ISSUED 330 PM CST MON FEB 9 2015/ COLD FRONT HAS EXITED THE CWA BUT SOME SCATTERED SHOWERS. WILL REMAIN POSSIBLE ACROSS THE FAR EAST THRU 00Z WHEN THE UPPER TROF FINALLY PUSHES EAST INTO GA. WITH SEVERAL DRY COLD FRONTS EXPECTED TO PUSH THRU THE REGION FOLLOWED BY SOME FAIRLY STRONG ARCTIC HIGHS.
AND LOW PRESSURE TAKES SHAPE ACROSS THE GREAT LAKES. AFTER HIGHS REACH INTO THE LOWER 40S TODAY.
VFR TO PREVAIL WITH GENERALLY LIGHT NORTH TO NORTHEAST WINDS AS HIGH PRESSURE BUILDS IN FROM THE WEST. REACHING THE LOWER/MID 40S. /ISSUED 341 PM CST MON FEB 9 2015/ DRY COLD FRONT MOVED THROUGH AND INTO THE GULF AS TEMPERATURES CLIMBED TO AROUND 80 DEGREES TODAY. RIDGING ALOFT WILL ALLOW FOR PLENTY OF SUNSHINE AS TEMPERATURES RECOVER INTO THE 60S TO NEAR 70.
335 AM EST TUE FEB 10 2015 HIGH PRESSURE OVER THE WESTERN LAKES WILL MOVE ACROSS THE GREAT LAKES TODAY.
COLD ADVECTION BEHIND THE DEPARTING SURFACE COLD FRONT WILL RESULT IN VFR CONDITIONS WITH CLEAR SKIES AND NORTHERLY WINDS AT 10-15 KNOTS OVER THE NEXT 24 HOURS.
HIGH PRESSURE WILL BUILD OVERNIGHT WITH SOME PATCHY DENSE VALLEY FOG TUESDAY MORNING.
320 AM CST Tue Feb 10 2015 Warmer temperatures are expected to return this afternoon for much of the region as southerly winds mix down increasing 925 hPa temps as warm as +8 C across eastern KS and far western MO, resulting in high temperatures in the lower to mid 50s.