Aikyam-Lab/Synoptic-Bench huggingface dataset:
A WEAK SHORT WAVE TROUGH WILL SLIDE ACROSS THE NORTHEAST CWA. EXPECT THE SOUTHEAST WINDS TO DECREASE INTO THE EVENING AS A WEAK BOUNDARY DROPS IN BEHIND THE UPPER TROUGH. THE WINDS WILL THEN BECOME SOUTHEAST ACROSS THE CWA THROUGH WEDNEDAY IN RESPONSE TO THE NEXT SHORT WAVE TROUGH. THE SECOND TROUGH COMING THROUGH WEDNESDAY NIGHT WILL BRING SOME CHANCES OF LIGHT SHOWERS MAINLY ACROSS NORTH CENTRAL SD. IN RESPONSE TO THE LARGE UPPER LEVEL LOW PRESSURE AREA MOVING INTO THE SOUTHWEST US.
644 PM EDT TUE APR 12 2016 HIGH PRESSURE CENTERED OVER LAKE MICHIGAN WILL BUILD TO QUEBEC BY WEDNESDAY NIGHT. COOL NORTHEASTERLY WINDS WILL CONTINUE OFF LAKE ERIE AS HIGH PRESSURE SHIFTS TO THE EASTERN GREAT LAKES.
347 PM EDT TUE APR 12 2016 COLD FRONT EXITS THIS MORNING. HIGH PRESSURE CENTERED TO OUR NORTH AND NORTHEAST. RIDGING CONTINUES TO BUILD OVER THE REGION TONIGHT. TEMPERATURES ARE NOW FORECASTED TO BE AT OR SLIGHTLY ABOVE FREEZING IN THESE AREAS SO HAVE DECIDED TO ISSUE A FROST ADVISORY IN THESE LOCATIONS INSTEAD OF A FREEZE WARNING. AS BELOW FREEZING TEMPS STILL LOOK LIKE THEY WILL BE WIDESPREAD IN THOSE AREAS. HIGH PRESSURE TO THE NORTHEAST WILL PROVIDE DRY WEATHER AND MOSTLY CLEAR SKIES THROUGH THE FORECAST PERIOD.
INCREASING RAIN CHCS EXPECTED TONIGHT INTO WED AS A WEAK BDRY STALLS ACROSS THE AREA WITH A COASTAL TROUGH DRAPED TO ITS SE. SOME MODELS PROG THE HEAVY RAIN TO CONTINUE ALONG THE COAST THROUGH WED AFTERNOON WHILE OTHER SHOW A DECREASING TREND AS THE UPPER TROUGH EXITS THE REGION.
202 PM CDT TUE APR 12 2016 Upper level low pressure area across Arizona/New Mexico will move east across the Texas Panhandle overnight. Showers and thunderstorms will continue to develop across southeast New Mexico and west Texas this evening ahead of this system with the best chance across the Permian Basin furthest north in the cooler air where the best lift and moisture will reside.
228 PM CDT TUE APR 12 2016 317 AM CDT THE COOLER BY THE LAKE REGIME BEGINS TODAY AS EXTENSIVE HIGH PRESSURE WILL MOVE OVERHEAD THIS MORNING.
A HIGH PRESSURE RIDGE STRETCHES CURRENTLY FROM THE GREAT LAKES AND DOWN THE OHIO AN MISSISSIPPI RIVER VALLEYS AND INTO THE TEXAS THROUGH ALABAMA REGION. THE RIDGE CENTER IS EXPECTED TO SHIFT EAST/NORTHEASTWARD INTO INTO QUEBEC BY MORNING ALLOWING FOR SOME EASTERLY FLOW STRATUS TO DEVELOP AND SPREAD WESTWARD INTO CENTRAL ALABAMA DURING THE PRE DAWN AND EARLY MORNING HOURS. AS THE RIDGE SHIFTS TONIGHT THROUGH WEDNESDAY.
243 PM CDT TUE APR 12 2016 HIGH PRESSURE RIDGE PROVIDING WALL-TO-WALL SUNSHINE AND LIGHT WINDS ACROSS THE DVN CWA. THERE WILL BE ENOUGH OF A SOUTH WIND TO KEEP TEMPERATURES WARMER THAN LAST NIGHT. MINIMUM TEMPERATURES SHOULD BE IN THE LOWER TO MID 30S AND THERE MAY BE SOME PATCHY FROST.
309 PM EDT TUE APR 12 2016 HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH THE END OF THE WEEK. A BLUSTERY-COOL AND DRY AFTERNOON IS IN PROGRESS AS HIGH PRESSURE MOVES IN FROM THE GR LAKES. LEADING TO A COLD NIGHT FOR THE RIDGE VALLEY REGION. OVER THE LOWER SUSQ VALLEY WHERE THE GROWING SEASON HAS OFFICIALLY BEGUN. AREAS OF FROST LOOK LIKELY AS TEMPS BOTTOM OUT NEAR FREEZING. HIGH PRESSURE TO OUR NORTH WILL KEEP US DRY. HOWEVER A WEAK MID LEVEL TROUGH IS FORECAST TO DROP DOWN OUT OF THE GR LAKES WHICH MAY BRING MORE IN THE WAY OF MID AND HIGH CLOUDS THAN CURRENTLY INDICATED IN THE MODEL OUTPUT.
225 PM EDT TUE APR 12 2016 HIGH PRESSURE IS EXPECTED TO BRING DRY WEATHER AND A GRADUAL WARMING TREND THROUGH THE WEEKEND. UNDERCUT OVERNIGHT TEMPERATURE GUIDANCE WITH WINDS ON THE LIGHT SIDE AS HIGH PRESSURE MOVES ACROSS THE EASTERN GREAT LAKES. SOME HIGH CLOUDS WILL MOVE INTO THE REGION TOMORROW WITH AN UPPER LEVEL TROUGH. HIGHS ON WEDNESDAY WILL BE 5-10 DEGREES WARMER THAN TUESDAY. ALTHOUGH THESE VALUES WILL STILL BE SEVERAL DEGREES COOLER THAN NORMAL. WEAK GENERAL MID-LEVEL TROUGHING WILL HAVE ONE LAST REINFORCING SHORT WAVE TROUGH SLIDE DOWN THE BACK SIDE OF THE LONG WAVE TROUGH WEDNESDAY EVENING.
348 PM MDT TUE APR 12 2016 SOMEWHAT FAMILIAR LARGE SCALE PATTERN ON THE H5 HAND ANALYSIS AT 12Z WITH RIDGING ALONG THE WEST COAST OF NOAM AND TROUGHING IN THE EAST. THE WEAK UPPER LOW SNEAKING UNDER THE WESTERN RIDGE IS MOVING OVER THE SOUTHERN ROCKIES THIS AFTERNOON. WEAK ASCENT NORTH OF THIS SYSTEM IS COMBINING WITH AFTERNOON INSTABILITY TO ENHANCE RIDGETOP SHOWER AND THUNDERSTORM ACTIVITY. STEEP LAPSE IN PLACE HOWEVER WITH WARMING MID LAYER AND THIS SHOULD KEEP SOME LATE AFTERNOON SHOWERS AND ISOLATED STORMS ON THE RIDGETOPS.
HIGH PRESSURE ACROSS THE REGION WILL CONTINUE TO PROPAGATE EASTWARD WITH RETURN FLOW DEVELOPING DURING THE MORNING HOURS. UPPER RIDGING BUILDS INTO THE REGION ON WEDNESDAY ALONG WITH A SOUTHERLY LOW LEVEL FLOW AND A WARMING AIRMASS. SOUTHWEST FLOW ALOFT AND ANY WEAK UPPER WAVES EJECTING FROM THE MEAN WESTERN CONUS TROUGH COULD LEAD TO SHOWERS.
A FAST MOVING RIDGE OF HIGH PRESSURE WILL LEAD TO A DAY OF DRY AND WARM WEATHER.
340 PM EDT TUE APR 12 2016 HIGH PRESSURE CENTERED NEAR CHICAGO WILL BUILD TO QUEBEC BY WEDNESDAY NIGHT. COOL NORTHEASTERLY WINDS WILL CONTINUE OFF LAKE ERIE AS HIGH PRESSURE SHIFTS TO THE EASTERN GREAT LAKES.
A MUCH QUIETER DAY HAS UNFOLDED ACROSS THE REGION BUT CONDITIONS HAVE BEEN PARTLY TO MOSTLY CLOUDY AND A LITTLE COOLER AND DRIER ACROSS THE REGION. TEMPERATURES THIS AFTERNOON HAVE CLIMBED INTO THE UPPER 60S AND LOWER 70S BUT THIS IS MOSTLY COOLER THAN THIS TIME YESTERDAY. THE COLD FRONT THAT TRAVERSED THE REGION OVERNIGHT IS NOW LOCATED SOUTH OF MY CWA AND LAID OUT CLOSE TO THE GULF COAST. IT IS CURRENTLY EXPECTED THAT THE HIGHER RAINFALL AMOUNTS WILL STAY SOUTH OF MY AREA BUT THE SOUTHERN COUNTIES IN MY CWA COULD STILL SEE ANOTHER INCH OR SO WITH LOCALLY HIGHER AMOUNTS. RAIN CHANCES WILL BE SLOW TO MOVE OUT OF THE REGION AS WE WILL BE UNDER THE INFLUENCE OF A LARGE UPPER RIDGE(REX BLOCK) WITH AN UPPER TROUGH CAUGHT OVER US IN THIS UPPER PATTERN.
652 PM EDT TUE APR 12 2016 SHOWERS WILL OCCUR AHEAD OF A COLD FRONT WHICH WILL MOVE ACROSS THE AREA TONIGHT. HIGH PRESSURE WILL EXPAND SOUTHWARD BEGINNING WEDNESDAY AND CONTINUE INTO THE WEEKEND.
AS AN UPPER LEVEL TROF MOVES INTO W TX. AREAS ALONG AND S OF I-20 LOOK TO SEE THE HIGHER QPF WITH THIS EVENT. AS THE LOW PUSHES EWD THROUGH WEDNESDAY. RAINFALL AMOUNTS WILL TAPER OFF AS THE LOW MOVES OVHD WEDNESDAY NIGHT.
WE EXPECT ANOTHER ROUND OF CONVECTION TO DEVELOP OVER THE HIGHER TERRAIN WEST OF THE RIO GRANDE. GIVEN THE UPPER TROUGH AXIS WILL LINGER OVER THE REGION.
123 PM EDT TUE APR 12 2016 HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH THE END OF THE WEEK. A BLUSTERY-COOL AND DRY AFTERNOON IS IN PROGRESS AS HIGH PRESSURE MOVES IN FROM THE GR LAKES. LEADING TO A COLD NIGHT FOR THE RIDGE VALLEY REGION. OVER THE LOWER SUSQ VALLEY WHERE THE GROWING SEASON HAS OFFICIALLY BEGUN. AREAS OF FROST LOOK LIKELY AS TEMPS BOTTOM OUT NEAR FREEZING. HIGH PRESSURE TO OUR NORTH WILL KEEP US DRY. HOWEVER A WEAK MID LEVEL TROUGH IS FORECAST TO DROP DOWN OUT OF THE GR LAKES WHICH MAY BRING MORE IN THE WAY OF MID AND HIGH CLOUDS THAN CURRENTLY INDICATED IN THE MODEL OUTPUT. THE UPPER LEVEL TROUGH WILL LIFT OFF TO THE EAST TUESDAY NIGHT. ANOTHER SHORT WAVE TROUGH WILL MOVE THROUGH THE REGION WEDNESDAY.
THE AREA CONTINUES TO REMAIN WINDY WITH GUSTS 25-35 MPH DUE TO STRONG RIDGE TO OUR EAST AND LEE-SIDE TROUGH TO THE WEST OVER THE FRONT RANGE. UPPER RIDGE EXPECTED TO MOVE OFF THE CENTRAL ROCKIES LATE TONIGHT GOING INTO WEDNESDAY PROVIDING AREA ANOTHER PERIOD OF DRY CONDITIONS. WITH WEDNESDAY HIGHS REACHING WELL INTO THE MID TO UPPER 70S AS HIGH PRESSURE BUILDS OVER AREA. EXPECTING GUSTY CONDITIONS(25-35 MPH) TO PERSIST INTO THE EARLY EVENING HOURS BEFORE TAPERING OFF AS LEE-SIDE TROUGH MOVES OFF THE FRONT RANGE. HAVE CONTINUED MENTION OF SLIGHT CHANCE POPS FOR RW/TRW FOR WESTERN PORTIONS OF OUR COLORADO THRU SUNSET TO ACCT FOR DIURNAL HEATING AFFECTING THE CONVECTIVE ELEMENTS ASSOCIATED WITH TROUGH OVER CENTRAL COLORADO.
A slow moving cold front is making its way through the Northern Rockies this afternoon. Cooler and unstable air behind the front will be the kicker for scattered shower activity through Wednesday afternoon. Temperatures will be 5-8 degrees cooler.
MOST CONVECTION SHOULD BE CONFINED TO THE MOUNTAINS AND HIGHER TERRAIN NEAR THE CHEYENNE RIDGE AND PALMER DIVIDE. TEMPERATURES WILL BE A FEW DEGREES WARMER. FOR THE PAST FEW RUNS THE ECMWF MODEL HAS BEEN THE COLDEST OF THE MODELS WHILE THE NAM AND GFS HAVE BEEN WARMER. THE LATEST RUN OF THE GFS IS NOW COOLER.
/ISSUED 1034 AM EDT TUE APR 12 2016/ HIGH PRESSURE IS IN PLACE ACROSS THE AREA RIDGING IN FROM THE NE. A COLD FRONT WILL SETTLE SOUTH ACROSS THE DEEP SOUTH TODAY AND PUSH THE RIDGE TO THE SOUTH. HIGH PRESSURE RIDGING ACROSS THE AREA WILL SETTLE SOUTH THROUGH THE DAY AS A SLOW COLD FRONT SETTLES SOUTH THROUGH THE DEEP SOUTH.
246 PM EDT TUE APR 12 2016 HIGH PRESSURE WILL BUILD OVER THE REGION WEDNESDAY AND TAKE CHARGE OF OUR WEATHER THROUGH THE WEEKEND. A WEAK WAVE ALOFT WILL BRING SOME MID LEVEL MOISTURE AND PASSING CLOUDS FOR AN INTERVAL OF CLOUDS AND SUN TYPE OF DAY WITH TEMPERATURES ONLY GRADUALLY WARMING ABOVE TODAY'S READINGS AS WE REMAIN IN A SLIGHT LOW LEVEL THERMAL TROF. STACKED HIGH PRESSURE BECOMES SOLIDLY ESTABLISHED WITH THICKNESS VALUES TRENDING UPWARD DURING THIS PERIOD AS WE REMAIN ON THE GOOD SIDE OF THE OMEGA BLOCKING SITUATION.
553 PM CDT TUE APR 12 2016 AN UPPER LEVEL TROUGH IS BEGINNING TO FILL ACROSS WEST TEXAS AS IT MOVES EASTWARD ACROSS THE SOUTHERN PLAINS INTO THE LOWER MISS VALLEY. THIS BOUNDARY WILL STAY SOUTH OF OUR TERMINAL LOCATIONS BUT LIFT IN ASSOCIATED WITH THE UPPER LEVEL TROUGH WILL RESULT IN SCATTERED TO NUMEROUS SHOWERS WITH ISOLATED THUNDERSTORMS LATER THIS EVENING THROUGH THE OVERNIGHT HOURS. AS AN UPPER LEVEL TROF MOVES INTO W TX. AREAS ALONG AND S OF I-20 LOOK TO SEE THE HIGHER QPF WITH THIS EVENT. AS THE LOW PUSHES EWD THROUGH WEDNESDAY. RAINFALL AMOUNTS WILL TAPER OFF AS THE LOW MOVES OVHD WEDNESDAY NIGHT.
A COLD FRONT WILL SLOWLY CROSS THE AREA THIS AFTERNOON.
144 PM EDT TUE APR 12 2016 VFR CONDITIONS THROUGH THE PERIOD AS HIGH PRESSURE BEGINS BUILDING INTO THE REGION. ANY LINGERING STRATO CU WILL LIFT AND MIX OUT OVER THE NEXT FEW HOURS AS THE HIGH PINCHES OFF THE NORTHWESTERLY FEED OF LAKE MOISTURE AIDING IN ITS DEVELOPMENT THROUGH THE EARLY AFTERNOON. WINDS WILL BE RELAXING THROUGH THE AFTERNOON AS THE GRADIENT WEAKENS WITH THE HIGH CENTERING OVER THE AREA EARLY TONIGHT. WINDS WILL EVENTUALLY EMERGE OUT OF THE SOUTHEAST BY MORNING ON THE BACKSIDE OF THE HIGH. THE GRADIENT WILL WEAKEN AS THE HIGH CONTINUES TO BUILD IN FROM THE WEST WHICH WILL CAUSE THE WINDS TO DECREASE THIS AFTERNOON AND EVENING. PRONOUNCED SURFACE RIDGING AT THE SURFACE AND DRY LOW LEVELS EXPECTED TO PREVENT MEASURABLE PRECIPITATION. A STRONG UPPER LEVEL RIDGE TO BUILD INTO SOUTHERN LOWER MICHIGAN WEDNESDAY NIGHT.
HIGH PRESSURE INFLUENCES ESPECIALLY ALOFT WILL BECOME MORE ENHANCED OVER THE MID STATE THIS WEEKEND. LOWS THRU THE FORECAST PERIOD SHOULD GENERALLY REMAIN IN THE LOWER 50S. EXPECT VFR THROUGH THE NEXT 24 HOURS WITH DRY HIGH PRESSURE MOVING IN FROM THE NORTH.
400 PM EDT TUE APR 12 2016 HIGH PRESSURE AND A DRY AIRMASS WILL SETTLE IN ACROSS THE GREAT LAKES AND OHIO VALLEY. DRY WEATHER WILL PERSIST THROUGH THE END OF THE WEEK AS THE HIGH TRAVELS SLOWLY EAST. A WARMING TREND WILL OCCUR THROUGH THE WEEKEND AS THE HIGH PRESSURE PERMITS A GRADUAL INCREASE EACH DAY. AND SOME COOLER SPOTS MAY EXPERIENCE ANOTHER NIGHT OF FREEZING TEMPERATURES WITH THE SUBSEQUENT THREATS TO VEGETATION. THE HIGH PRESSURE WILL BE IN PLAY THROUGH THE FORECAST AND EACH SUCCESSIVE NIGHT AND DAYTIME PERIOD WILL SEE A RISE IN TEMPERATURES AS THEY BUILD ON EACH OTHER.
346 PM EDT TUE APR 12 2016 SHORT WAVE AND ASSOCIATED COLD FRONT WORKING THEIR WAY ACROSS THE REGION AND RAIN CHANCES SHOULD BE WINDING DOWN FOR ABOUT 24 HOURS BEFORE THE NEXT SYSTEM BEGINS IMPACTING THE FORECAST AREA. WEAK UPPER RIDGING TONIGHT QUICKLY SLIPS EAST. HIGH PRESSURE WILL WEDGE DOWN THE EASTERN SIDE OF THE FORECAST AREA.
Low level ridging is in place over the southeastern and mid-Atlantic states with upper level ridging centered to it southwest, over the Gulf of Mexico. After the fog clears up, however, the upper level pattern features us under the northeastern corner of the ridge of high pressure, which will increase subsidence aloft and thus keep skies mostly clear today save for some scattered cirrus clouds.
630 AM CDT THU OCT 22 2015 ALL EYES ON BROAD UPPER LEVEL LOW PRESSURE CENTERED NEAR THE FOUR CORNERS THIS MORNING. AS THE UPPER LOW WOBBLES NORTHEAST TODAY. BUT COOLER IN THE LOWER BRULE WHERE CLOUDS AND RAIN WILL ARRIVE EARLIEST. THE DECREASE WILL NOT BE EVEN DUE TO SHOWERS LINGERING ON THE WEST SIDE OF THE UPPER LOW AS IT PULLS NORTHEAST. THE CANADIAN NO DOUBT BECAUSE OF THE TROUGH AXIS IT LEAVES WEST OF THE MAIN SYSTEM AS THE LATTER PULLS NORTHEAST OF THE AREA.
ISSUED BY NWS LINCOLN IL 919 AM CDT THU OCT 22 2015 311 AM CDT LOW PRESSURE IS OVER THE ONTARIO/QUEBEC BORDER AND HIGH PRESSURE IS CENTERED OVER THE EASTERN PLAINS. THE LOW/S COLD FRONT HAS ALMOST MADE IT THROUGH THE CWA AND LIES FROM SOUTHERN LAKE MI THROUGH PONTIAC IL. THE COLD FRONT WILL CONTINUE SOUTH AND HIGH PRESSURE WILL SPREAD OVERHEAD. BUT AREAS SOUTH OF I-80 WILL GET INTO THE LOWER 70S. THE HIGH SHIFTS EAST OVERNIGHT WITH INCREASING CLOUD COVER AHEAD OF THE NEXT SYSTEM.
1111 AM EDT THU OCT 22 2015 SHOWERS ARE POSSIBLE TODAY WITH THE PASSAGE OF A WEAK COLD FRONT. SKIES SHOULD CLEAR OUT RATHER QUICKLY AS MUCH DRIER AIR WILL MOVE IN BEHIND THE COLD FRONT. RAPID CLEARING IS EXPECTED AS HIGH PRESSURE BUILDS IN.
THE UPPER LOW THAT BROUGHT ALL THE WET WEATHER IS CURRENTLY OVER THE 4-CORNERS AREA AND IS HEADED TO THE NORTHEAST. THE NE THIRD OF THE FORECAST AREA MAY SEE A SHOWER/T-STORM OR TWO OVER THE HIGHER TERRAIN THIS AFTERNOON BEFORE ALL IS SAID AND DONE DUE TO THE PROXIMITY TO THE LOW AND MID LEVEL MOISTURE. OTHERWISE MOSTLY SUNNY AND 8-10 DEGREES COOLER THAN NORMAL THIS AFTERNOON.
PREVIOUS FORECAST APPEARS ON TRACK WITH THE DRY COLD FRONT MOVING ACROSS THE AREA THIS EVENING. INCREASING MID AND HIGH CLOUDS WILL ACCOMPANY THE TROUGH, AND A SURFACE COLD FRONT FROM THIS SYSTEM WILL SHIFT WINDS TO THE WEST-NORTHWEST FOR A FEW HOURS AFTER THE FRONT PASSES LOCAL TAF SITES.
948 AM MDT THU OCT 22 2015 THE AREA OF LOW PRESSURE IS CURRENTLY MOVING OVER THE CWA AND CAUSING PLENTY OF PRECIP FOR THE REGION. AS THE LOW LIFTS TO THE NE TODAY AND THIS EVENING. THE OPENING UPPER LOW WILL LIFT THROUGH THE FOUR CORNERS AROUND SUNRISE THEN TRACK NE THROUGH WESTERN COLORADO TODAY. BY FRIDAY EVENING THE AREA WILL BE UNDER DRYING NW FLOW ALOFT WITH A RIDGE BUILDING OVER THE WESTERN U.
THE OPENING UPPER LOW WILL LIFT THROUGH THE FOUR CORNERS AROUND SUNRISE THEN TRACK NE THROUGH WESTERN COLORADO TODAY. BY FRIDAY EVENING THE AREA WILL BE UNDER DRYING NW FLOW ALOFT WITH A RIDGE BUILDING OVER THE WESTERN U.
1021 AM EDT THU OCT 22 2015 WARM TEMPERATURES AND MAINLY DRY CONDITIONS WILL CONTINUE TODAY IN A SOUTHERLY FLOW AHEAD OF A WEAK COLD FRONT. HIGH PRESSURE CENTERED ACROSS THE EASTERN GREAT LAKES WILL KEEP DRY WEATHER OVER THE OHIO VALLEY ON FRIDAY.
PARTICULARLY NORTH AND WEST FACING SLOPES COULD SEE A RESURGENCE IN SNOWFALL THIS EVENING WITH MOISTURE WRAPPING BACK OVER THE HIGH COUNTRY AS THE UPPER LOW PASSES TO OUR EAST-NORTHEAST. UPPER LOW WILL MOVE NORTH OVER THE MOUNTAINS TODAY. BUT THE LOW CLOUDS COULD BE CLEARING IN THE SOUTHERN PART OF THE AREA BY THE END OF THE DAY. FOR TONIGHT THE LOW WOBBLES TOWARD THE NORTHEAST WITH FLOW SHIFTING TO NORTHWESTERLY BY MIDNIGHT. MODELS HAVE A WEAK UPPER TROUGH TO MOVE EASTWARD ACROSS THE CWA ON FRIDAY.
A LARGE SCALE UPPER LEVEL TROF OVER THE WESTERN STATES WILL DRAW GULF MOISTURE INTO THE TERMINALS FROM MODERATE SOUTHEASTERLY FLOW. WITH A SFC TROF FORMING OVER THE W GULF ALONG THE TX/MEXICAN COAST. A MESSY WX SITUATION CONTINUES TO TAKE SHAPE AS AN UPPER LEVEL LOW OVER THE SW U.
1121 AM CDT THU OCT 22 2015 THE SFC MAP THIS MORNING SHOWS HIGH PRES STILL SITTING OVER THE CAROLINAS RIDGING WEST WITH LOW PRES OVER THE TX/OK PANHANDLES.
1247 PM EDT THU OCT 22 2015 A COLD FRONT WILL MOVE SOUTHEAST ACROSS THE AREA TODAY.
A LOW PRESSURE SYSTEM WILL MAINTAIN UNSETTLED CONDITIONS ACROSS THE SOUTHEASTERN HALF OF THE REGION TODAY. MORNING WATER VAPOR LOOP AND H5 ANALYSIS INDICATE A MORE NOTABLE NORTHEASTWARD PROGRESSION OF THE UPPER LOW IN THE FOUR CORNERS REGION AS A MORE PROGRESSIVE NEAR ZONAL FLOW IS NOW PENETRATING INTO THE CENTRAL PACIFIC COAST. CURRENTLY SEEING LIGHT STRATIFORM RETURNS IN KICX/KGJX ACROSS THE DESERT SOUTHEAST ASSOCIATED WITH WEAK FORCING WITHIN THE WRAP AROUND ENVIRONMENT OF THE UPPER LOW. AS THIS LOW CONTINUES TO TRACK NORTHEAST TODAY AND THE UPPER WAVE APPROACHES FROM THE WEST.
A BROAD AREA OF HIGH PRESSURE WILL MAINTAIN MOSTLY DRY AND WARM CONDITIONS ACROSS NORTHWEST CALIFORNIA THROUGH THE WORK WEEK. A LOW PRESSURE SYSTEM WILL BRING THE NEXT CHANCE FOR RAIN LATE THIS WEEKEND.
644 AM CDT THU OCT 22 2015 A cold front pushing south through the forecast area appears to be reaching near I-70 based on radar velocity images. Slightly cooler air behind the front will limit high temps north of I-72 to the low to mid 70s, while areas along Hwy 50 and Lawrenceville are still able to climb to around 80.
WE COULD STILL SEE SOME ISOLATED SHOWERS AND STORMS THROUGH THE AFTERNOON AND EVENING ACROSS THE CAPROCK AS DRIER AND SLIGHTLY COOLER AIR HELPS TO INCREASE LAPSE RATES ALOFT. CAPE VALUES REMAIN UNDER 500 J/KG THROUGH THE AFTERNOON BUT WEAK SYNOPTIC LIFT FROM THE APPROACHING TROUGH AXIS MAY HELP TO GET SHOWERS GOING. THE UPPER LEVEL LOW RESPONSIBLE FOR THIS EVENT HAS STARTED TO LIFT NNE INTO NM TOWARDS THE ROCKIES. OUR PWATS START TO PLUMMET SO HAVE STARTED THE LOWERING OF POPS FROM WEST TO EAST A LITTLE EARLIER THAN ANTICIPATED STARTING WITH THIS EVENING.
/ISSUED 358 AM EDT THU OCT 22 2015/ QUIET WEATHER CONTINUES THIS PERIOD AS HIGH PRESSURE AT THE SURFACE AND ALOFT REMAINS IN CONTROL.
ISSUED BY NWS LINCOLN IL 1117 AM CDT THU OCT 22 2015 311 AM CDT LOW PRESSURE IS OVER THE ONTARIO/QUEBEC BORDER AND HIGH PRESSURE IS CENTERED OVER THE EASTERN PLAINS. THE LOW/S COLD FRONT HAS ALMOST MADE IT THROUGH THE CWA AND LIES FROM SOUTHERN LAKE MI THROUGH PONTIAC IL. THE COLD FRONT WILL CONTINUE SOUTH AND HIGH PRESSURE WILL SPREAD OVERHEAD. BUT AREAS SOUTH OF I-80 WILL GET INTO THE LOWER 70S. THE HIGH SHIFTS EAST OVERNIGHT WITH INCREASING CLOUD COVER AHEAD OF THE NEXT SYSTEM.
UPPER RIDGE ALSO REMAIN IN PLACE ACROSS THE REGION. THE AFOREMENTIONED UPPER RIDGE SHOULD KEEP ANY INFLUENCE OF THE THUNDERSTORM CLUSTER WELL TO OUR WEST THROUGH TONIGHT. HIGHS TODAY IN THE LOW TO MID 80S.
ISSUED BY NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 833 AM EDT THU OCT 22 2015 HIGH PRESSURE WILL REMAIN IN CONTROL THROUGH THE END OF THE WEEK. AN UPPER LEVEL TROUGH IS FORECAST TO PASS THROUGH THE GREAT LAKES REGION. WHILE THE UPPER RIDGE SHIFTS EAST OVER THE SOUTHEASTERN STATES. WENT WITH THE WARMER TEMPERATURE GUIDANCE WHICH HAS VERIFIED BEST OVER THE PAST FEW DAYS.
1148 AM CDT THU OCT 22 2015 FOR 18Z TAFS /ISSUED 1008 AM CDT THU OCT 22 2015/ UPPER LEVEL RIDGING CONTINUES TO DOMINATE THE WEATHER OVER THE TENNESSEE VALLEY THIS MORNING.
A WEAK COLD FRONT IN SE OREGON WILL MOVE THROUGH SW IDAHO THIS AFTERNOON. DRY COLD FRONT PLACEMENT ON THE LEADING EDGE OF THE CLOUD SHIELD PUTS IT FROM BAKER CITY TO BURNS AT 3 AM.
1225 PM EDT THU OCT 22 2015 HIGH PRESSURE WILL EXTEND OVER THE AREA THROUGH TONIGHT. A DRY COLD FRONT WILL MOVE THROUGH FRIDAY. FOLLOWED BY HIGH PRESSURE FROM THE NORTH OVER THE WEEKEND.
1030 AM EDT THU OCT 22 2015 A COLD FRONT WILL PASS THROUGH THE AREA TONIGHT.
UPPER LEVEL RIDGING CONTINUES TO DOMINATE THE WEATHER OVER THE TENNESSEE VALLEY THIS MORNING. HIGH PRESSURE WILL CONTINUE TO PUSH EAST ACROSS THE REGION.
1204 PM EDT THU OCT 22 2015 A COLD FRONT STRETCHING FROM THE UPPER GREAT LAKES TO THE OHIO VALLEY WILL PUSH EAST ACROSS THE STATE THIS AFTERNOON AND EARLY EVENING.
636 AM CDT THU OCT 22 2015 311 AM CDT LOW PRESSURE IS OVER THE ONTARIO/QUEBEC BORDER AND HIGH PRESSURE IS CENTERED OVER THE EASTERN PLAINS. THE LOW/S COLD FRONT HAS ALMOST MADE IT THROUGH THE CWA AND LIES FROM SOUTHERN LAKE MI THROUGH PONTIAC IL. THE COLD FRONT WILL CONTINUE SOUTH AND HIGH PRESSURE WILL SPREAD OVERHEAD. BUT AREAS SOUTH OF I-80 WILL GET INTO THE LOWER 70S. THE HIGH SHIFTS EAST OVERNIGHT WITH INCREASING CLOUD COVER AHEAD OF THE NEXT SYSTEM.
OVERNIGHT WITH THE SURFACE WINDS BECOMING MORE SOUTHERLY THE LOWER CEILINGS WILL SPREAD OVER MANY OF THE TERMINALS WITH MVFR AND IFR PREVAILING. /ISSUED 440 AM CDT THU OCT 22 2015/ DEEP UPPER TROUGH OVER THE SW STATES STREAMING MOISTURE ACROSS BAJA NEWD INTO AREA TODAY WITH A GENERAL INCREASE IN MID AND UPPER LVL CLOUDINESS EXPECTED. VIGOROUS CONVECTION OCCURRING WITH COLD FRONT AND DRY LINE INTERACTIONS. POST FRONTAL POPS TO BECOME HIGHER SOUTH OF I-20 AFTER THE WEEKEND WITH UPPER TROUGH STILL PROVIDING MOISTURE. AS MAIN KICKER EJECTS UPPER LOW ACROSS THE REGION BY MID WEEK IN THE EXTENDED.
CHATTANOOGA AIRPORT, TN 77 50 79 56 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 74 47 76 54 / 0 0 0 0 OAK RIDGE, TN 75 48 77 54 / 0 0 0 0 TRI CITIES AIRPORT, TN 74 45 76 51 / 0 0 0 0.
1034 AM EDT THU OCT 22 2015 UPDATE/MARINE AN AREA OF HIGH PRESSURE OVER WESTERN ONTARIO WILL BUILD INTO THE GREAT LAKES REGION TODAY AND FRIDAY.
842 AM EDT THU OCT 22 2015 LOW PRESSURE MOVING ACROSS SOUTHERN CANADA WILL DRAG PRECIPITATION THROUGH THE AREA TODAY.
733 AM EDT THU OCT 22 2015 A COLD FRONT WILL MOVE EAST ACROSS THE AREA TODAY.
913 AM EDT THU OCT 22 2015 HIGH PRESSURE WILL EXTEND OVER THE AREA THROUGH TONIGHT. A DRY COLD FRONT WILL MOVE THROUGH FRIDAY. FOLLOWED BY HIGH PRESSURE FROM THE NORTH OVER THE WEEKEND.
A MID AND UPPER WARM CORE ANTICYCLONE IS CENTERED OVER THE WESTERN YUCATAN PENINSULA. LATEST WATER VAPOR IMAGERY SHOWS THAT THE FLORIDA KEYS ARE BENEATH THE EASTERN EDGE OF THIS ANTICYCLONE. AT THE SURFACE AND IN THE LOWER TO MIDDLE LEVELS. TEMPERATURES ACROSS THE ISLANDS ARE IN THE MIDDLE TO UPPER 70S WITH DEWPOINTS IN THE LOWER 70S. BUT WATERS IS SLIGHTLY COOLER ACROSS THE SHALLOWER FLORIDA WATERS. AFOREMENTIONED SURFACE RIDGING WILL REMAIN IN PLACE.
A WEAK COASTAL TROUGH WILL PUSH TO THE COAST AND THERE APPEARS TO BE ENOUGH LOW LEVEL MOISTURE BELOW THE 700MB SUBSIDENCE INVERSION TO SUPPORT A FEW INLAND MOVING COASTAL SHOWERS TODAY. LAST OF THE LOW STRATUS CEILINGS OVER INLAND AREAS WILL BURN OFF HERE IN THE NEXT HOUR OR TWO AND THEN VFR CONDITIONS WILL PREVAIL THE REMAINDER OF THE DAY. HIGH PRESSURE NORTH OF THE WATERS WILL CONTINUE A LONG FETCH OF NORTHEAST WINDS TODAY WITH LINGERING SWELLS KEEPING SEAS ELEVATED.
EXPECT A COLD FRONT TO PUSH SOUTH ACROSS THE AREA INTO OK EARLY ON SAT.
THE WEATHER SYSTEM THAT HAS BEEN OVER THE SOUTHWEST WILL EXIT ARIZONA TODAY FOLLOWED BY A SECONDARY WEAK TROUGH OF LOW PRESSURE ON FRIDAY. HIGH PRESSURE RIDGE BUILDS IN OVER THE REGION FOR THE WEEKEND WITH DRY WEATHER AND NEAR NORMAL TEMPERATURES.
THE ORIENTATION OF THE RIDGE WILL MAINTAIN LIGHT SOUTHEAST FLOW INTO THE REGION WITH VERY LITTLE CHANGE IN SENSIBLE WEATHER CONDITIONS ANTICIPATED AS HIGHS WILL WARM INTO THE UPPER 70S/LOWER 80S AND LOWS TONIGHT WILL DROP INTO THE UPPER 40S/NE TO MID 50S/SW. LEADING TO A GRADUAL WEAKENING OF THE DOWNSTREAM RIDGE OVER THE CENTRAL GULF.
736 AM EDT THU OCT 22 2015 A COLD FRONT STRETCHED FROM THE UPPER GREAT LAKES TO THE OHIO VALLEY EARLY THIS MORNING.
/ISSUED 301 AM CDT THU OCT 22 2015/ AN UPPER RIDGE OF HIGH PRESSURE WILL CONTINUE TO BUILD OVER THE MIDSOUTH INTO FRIDAY. HIGHS WILL BE IN THE LOWER TO MID 80S WITH RAIN FREE CONDITIONS. THE RIDGE WILL BEGIN TO BREAKDOWN ON FRIDAY. MODELS ARE NOW SLOWER WITH THE PROGRESSION OF A COLD FRONT THAT WILL BE MOVING OUT OF THE CENTRAL AND SOUTHERN PLAINS.
707 AM EDT THU OCT 22 2015 HIGH PRESSURE WILL EXTEND OVER THE AREA THROUGH THURSDAY. A DRY COLD FRONT WILL MOVE THROUGH FRIDAY. FOLLOWED BY HIGH PRESSURE FROM THE NORTH OVER THE WEEKEND.
ISSUED BY NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1025 AM EDT THU OCT 22 2015 HIGH PRESSURE WILL REMAIN IN CONTROL THROUGH THE END OF THE WEEK. BUT THIS SHOULD HAVE LITTLE IMPACT ON HEATING GIVEN THE OTHERWISE DRY RIDGING AT THE SURFACE AND ALOFT. MORNING THICKNESSES SUPPORT HIGHS IN THE UPPER 70S TO LOWER 80S NORTH TO SOUTH AND WILL CONTINUE TO LEAN TOWARD THE WARMER EDGE OF GUIDANCE.