Aikyam-Lab/Synoptic-Bench huggingface dataset:
BEHIND THIS SECOND SYSTEM A MASSIVE SURFACE ANTICYCLONE AND ARCTIC AIR MASS SHOULD DOMINATE OUR REGION MOST OF THE LATTER PART OF THE WEEK. WE UPDATED THE GRIDS TO REFLECT WARMER TEMPERATURES. BUT HIGH PRESSURE MOVING OVER REGION AND MOSTLY SUNNY SKIES.
STRONG LOW PRESSURE WILL BE MOVING ACROSS ONTARIO CANADA LATER TODAY AND TONIGHT. A LOW PRESSURE TROUGH AND LEADING WARM ADVECTION COULD BRING SOME LIGHT SNOW TO SOUTHERN WISCONSIN MIDDAY TUESDAY.
358 PM CST MON FEB 23 2015 ARCTIC HIGH PRESSURE AREA WILL CONTINUE TO SETTLE ACROSS THE REGION TODAY. AS ANOTHER POLAR COLD FRONT DROPS SOUTH ACROSS THE REGION FOR WED EVENING/WED NIGHT.
356 PM CST MON FEB 23 2015 A PACIFIC COLD FRONT WILL SURGE SOUTHEAST THROUGH THE REGION TONIGHT. THE WIND WILL KEEP THE LOWER ATMOSPHERE WELL MIXED.
TEMPERATURES REMAINED COLD TODAY (NO SURPRISE), WITH TEMPS ONLY CREEPING BRIEFLY INTO THE LOWER AND MIDDLE 30S ACROSS THE SOUTH, PRIOR TO THE AFTERNOON CLOUD-UP. HOWEVER, BELIEVE DRY AIR IN THE LOW TO MID LEVELS WILL PROVIDE MAINLY A VIRGA EVENT, WITH ONLY A FEW LIGHT FLURRIES WAFTING TO THE GROUND.
UP TO 2 INCHES OF NEW SNOW IS POSSIBLE IN THE HIGHER ELEVATIONS OF MONO COUNTY.
116 PM EST MON FEB 23 2015 STRONG HIGH PRESSURE WILL BUILD TOWARD THE MID ATLANTIC COAST THROUGH TUESDAY. A COLD FRONT WILL THEN APPROACH TUESDAY NIGHT.
930 AM PST MON FEB 23 2015 AN UPPER LEVEL LOW OVER CALIFORNIA COULD BRING PRECIPITATION INTO THIS EVENING WITH NEAR BELOW NORMAL TEMPERATURES.
RIDGING WILL BUILD INTO THE AREA TONIGHT AND PASS THROUGH TOMORROW. THE DRY AIR MASS OVER THE REGION WILL GRADUALLY WARM THROUGH TUESDAY AS AN UPPER RIDGE BUILDS IN FROM THE NORTH.
THE LATEST SURFACE OBS CLEARLY SHOW A LARGE RIDGE OF HIGH PRESSURE CONTINUE TO MOVE SOUTHEASTWARD OUT OF EAST CENTRAL PLAINS. AS THIS RIDGE MAKES ITS WAY ACROSS THE OHIO AND TENNESSEE VALLEY REGIONS. TEMPERATURES ACROSS THE AREA HAVE BEEN A FEW DEGREES WARMER. ANOTHER FACTOR THAT MAY KEEP TEMPERATURES SLIGHTLY WARMER TONIGHT IS THE PASSAGE OF A FAST MOVING AREA OF LOW PRESSURE. THESE CLOUDS WOULD ACT TO KEEP TEMPERATURES SLIGHTLY WARMER. AS SOUTHERLY WINDS BECOME ESTABLISHED IN THE ZONE BETWEEN THE AREA OF LOW PRESSURE MENTIONED BEFORE. AND A RIDGE OF HIGH PRESSURE THAT IS FORECAST TO CONTINUE DRIFTING SOUTHWARD INTO THE WESTERN GULF OF MEXICO. AS BROAD TROUGHING TAKES SHAPE ACROSS THE MISSISSIPPI VALLEY THROUGH THE WEEK.
1102 AM MST MON FEB 23 2015 TEMPERATURES HAVE PLUMMETED BELOW ZERO EARLY THIS MORNING FOR MUCH OF SOUTHEAST WYOMING IN ADDITION TO A FEW LOCATIONS ACROSS THE NEBRASKA PLAINS AS SKIES HAVE BECOME MOSTLY CLEAR EXCEPT ALONG THE CHEYENNE RIDGE. FLURRIES AND PATCHY AREAS OF FOG PERSIST THIS MORNING MAINLY ACROSS LARAMIE AND KIMBALL COUNTIES THIS MORNING WITH SOUTHERLY UPSLOPE WINDS OVER THE CHEYENNE RIDGE. THE UPPER LOW THAT WAS RESPONSIBLE FOR THE RECENT SNOW AND COLD WILL REMAIN OVER THE DESERT SOUTHWEST TODAY AND WILL SHIFT TO THE EAST ON TUESDAY.
1021 AM MDT SUN APR 5 2015 H5 UPPER AIR HAND ANALYSIS SHOWS A LARGE AREA OF LOW PRESSURE NEAR THE HUDSON BAY REGION BLOCKING ANOTHER UPSTREAM LOW STALLED OFF THE BRITISH COLUMBIA COAST. TEMPERATURES STAY ON THE HIGH SIDE OF NORMAL THE NEXT FEW DAYS BUT AT THE COST OF WINDY CONDITIONS. FIRE CONTROL ISSUES WILL BE A THREAT EACH OF THE NEXT FEW AFTERNOONS IN THE LOWER ELEVATIONS OF NORTHWEST AND SOUTHWEST COLORADO AS SOUTHWEST WINDS GUST OVER 30 MPH.
ANOTHER VERY WARM DAY IS IN STORE FOR SOUTH FLORIDA WITH HIGHS IN THE LOW/MID 80S METRO AREAS AND UPPER 80S TO LOW 90S EVERGLADES AND WEST.
420 AM PDT SUN APR 5 2015 A LOW PRESSURE SYSTEM WILL MOVE SLOWLY SOUTHWARD ALONG THE WEST COAST.
AS THIS DEEP TROUGH SLOWLY DRIFTS SOUTHEASTWARD AND COMES ASHORE ON MONDAY OVER NORTHERN CALIFORNIA AND SOUTHERN OREGON. HEIGHTS ALOFT WILL DIP SOMEWHAT STARTING MONDAY WITH SOME COOLER AIR ALSO MAKING ITS WAY INTO OUR REGION. BUT MONDAY WILL START THE COOLING TREND WITH HIGHS MOSTLY IN THE LOWER 80S.
613 AM CDT Sun Apr 5 2015 Latest surface analysis showing high pressure over south central Kentucky with the coldest temperatures, upper 20s to lower 30s, located near the large fair weather system.
19 /ISSUED 351 AM CDT SUN APR 5 2015/ TODAY WILL BE DRY AS HIGH PRESSURE REMAINS INTACT OVER THE AREA. ISENTROPIC LIFT WILL MOVE INTO THE AREA ON THE WESTERN SIDE OF THE RIDGE AFTER SUNSET AND WILL LEAD TO AN INCREASE IN SHOWERS.
A WEAK COLD FRONT ACROSS NORTHWEST UTAH TODAY WILL STRENGTHEN AND ADVANCE EAST THROUGH THE STATE LATE TONIGHT THROUGH MONDAY. AN UPPER LEVEL LOW PRESSURE SYSTEM WILL MOVE EAST INTO THE GREAT BASIN MIDWEEK. THE COLD CORE UPPER LOW IS CURRENTLY CENTERED ON 130W OFF THE PACIFIC NORTHWEST COAST THIS MORNING. THIS UPPER LOW WILL CONTINUE ON A SLOW SOUTH-SOUTHEAST TRACK. THE TIGHTENING OF THE SURFACE GRADIENT FROM THE ADVANCING TROUGH ALONG WITH MODERATE TO STRONG NEAR 700MB SUPPORT WINDS WILL CREATE STRONG SOUTHERLY SURFACE WINDS ACROSS THE WEST-CENTRAL AND SOUTHWEST VALLEYS THIS AFTERNOON AND EVENING.
LOOKS LIKE ALL SITES WILL RETURN TO MVFR BY MONDAY MORNING AS THE LOW LEVEL JET STRENGTHENS. WARMER TEMPERATURES TODAY INTO MONDAY COULD FURTHER INCREASE DRY-LINE ACTIVITY OVER W TX LATE MONDAY AS THE WIND FLOW IN THE MID LEVELS REMAINS MOSTLY ZONAL AND LOW LEVEL MOISTURE DEEPENS OVER THE SOUTHERN EDWARDS PLATEAU.
Tomorrow morning lows will also reflect some warming, with lows mostly in the lower 60s.
UPPER LOW CENTERED OFF THE COAST. SATELLITE SHOWS SEVERAL SHORT WAVES ROTATING THROUGH THE LOW. COOLER TEMPS TODAY AS COMPARED TO THE PAST FEW DAYS WITH HIGHS IN THE 40S TO LOWER 50S.
ALL BEING EJECTED FROM A CLOSED UPPER LOW OFF OF VANCOUVER ISLAND.
848 AM EDT SUN APR 5 2015 A COLD FRONT WILL CROSS THE AREA TODAY.
ESPECIALLY NUMEROUS NORTH OF THE HIGHWAY 190 CORRIDOR. AND COASTAL TROUGH/WARM FRONT WILL NOT REALLY MOVE ACROSS THE FORECAST AREA UNTIL TONIGHT. GENERALLY ALONG AND N OF A NWD MOVING COASTAL TROF/WARM FRONT. 13 EAST WINDS WILL GRADUALLY SHIFT MORE SOUTHEAST TODAY AS HIGH PRESSURE MOVES OVER THE SOUTHEASTERN STATES.
During the afternoon, return flow in response to leeside troughing will begin sharpening up a dryline SW-NE across the area. Forecast soundings and 85H temp fields suggest staying on the lower side of guidance, which has been too optimistically high of late.
A 1030 MB HIGH CENTERED NEAR THE NORTH CAROLINA COAST HAS STARTED TO BRIDGE ACROSS THE COLD FRONT DYING ACROSS NORTH CENTRAL FLORIDA. THIS GRADIENT WILL WASH OUT AS THE HIGH PRESSURE SYSTEM SLIDES EAST INTO THE WESTERN NORTH ATLANTIC. A HIGH PRESSURE SYSTEM OVER THE MID ATLANTIC STATES WILL MOVE OFFSHORE INTO THE WESTERN NORTH ATLANTIC OCEAN THIS AFTERNOON AND TONIGHT. HIGH PRESSURE WILL EXPAND AND PERSIST ACROSS THE WESTERN NORTH ATLANTIC.
1031 AM EDT SUN APR 5 2015 HIGH PRESSURE WILL REMAIN IN CONTROL TODAY.
807 AM EDT SUN APR 5 2015 HIGH PRESSURE CENTERED OVER NC THIS MORNING WILL MOVE OFF THE COAST LATE THIS AFTERNOON. HIGH PRESSURE WAS CENTERED OVER NC THIS MORNING WITH CLEAR SKIES ACROSS THE MIDLANDS AND CSRA. THE AREA OF HIGH PRESSURE WILL MOVE OFFSHORE THIS AFTERNOON AS A LOW PRESSURE SYSTEM SLOWLY CROSSES THE CENTRAL PLAINS. OUR AREA WILL REMAIN IN A SOUTHERLY LOW-LEVEL FLOW MONDAY AND MONDAY NIGHT WITH POPS IN THE HIGH CHANCE RANGE. KEPT HIGH TEMPERATURES MONDAY IN THE LOWER 70S WEST TO THE UPPER 70S EAST. TEMPERATURES WILL BE ABOVE NORMAL AS WEAK UPPER-LEVEL RIDGING DEVELOPS ACROSS THE SOUTHEASTERN STATES. HIGH PRESSURE WILL GRADUALLY MOVE EASTWARD AND OFF THE NC COAST BY THIS AFTERNOON.
MORE CRITICAL CONDITIONS EXIST IN THE HIGH MOUNTAIN VALLEYS BUT LOCAL LAND/FIRE MANAGERS THERE REPORT THAT FUEL CONDITIONS ARE NOT FAVORABLE FOR LARGE FIRE GROWTH IN THOSE AREAS AT THIS TIME. BROAD UPPER LEVEL RIDGE EXTENDS FROM COAST-TO-COAST AT THIS TIME. DETERMINISTIC MODELS SHOW THE UPPER LEVEL RIDGE FLATTENING SOME AND SWLY WINDS ALOFT BECOMING NEARLY ZONAL BY THE AFTERNOON. AFTERNOON TEMPS SHOULD HAVE LITTLE PROBLEM REACHING THE LOW/MID-70S ON THE PLAINS AND UPPER 40S- 50S IN THE HIGH COUNTRY. RESULTING IN GUSTIER W-SWLY WINDS ON THE MTN RIDGES AND HIGHER FRONT RANGE FOOTHILLS.
THIS WILL BE ENHANCED BY CLEARING IN THE WAKE OF THE WARM FRONT THAT IS PRESENTLY MOVING NORTH THROUGH THE NORTHERN PORTION OF THE CWA. THESE SHOWERS WERE LIKELY IN THE EARLY STAGES OF DEVELOPMENT ALONG A WARM FRONT. MODELS STILL SHOW THAT THE HIGHEST QPF WILL OCCUR NORTH OF A BURNS-BOISE-FAIRFIELD LINE. SNOW LEVELS BETWEEN 3000 AND 4000 FEET THIS MORNING IN THESE AREAS WILL RESULT IN A DUSTING TO AN INCH OF SNOW IN THE LOWER ELEVATIONS FROM BURNS TO BAKER CITY. THE SHOWERS OVERNIGHT WILL BE SUPPORTED BY A SHORT WAVE WHICH MOVES THROUGH THE PACNW AS IT PEELS AWAY FROM THE PARENT COASTAL UPPER LOW. SHOWERS WILL LINGER ACROSS THE NORTH ON MONDAY WHILE DRIER AIR ASSOCIATED WITH WEAK UPPER RIDGING MOVES IN AHEAD OF THE MAIN UPPER LOW AS IT HANGS JUST OFF THE WEST COAST.
TODAY WILL BE DRY AS HIGH PRESSURE REMAINS INTACT OVER THE AREA. ISENTROPIC LIFT WILL MOVE INTO THE AREA ON THE WESTERN SIDE OF THE RIDGE AFTER SUNSET AND WILL LEAD TO AN INCREASE IN SHOWERS.
THE ASSOCIATED CLOUD COVER WILL FOLLOW THE UPPER LEVEL RIDGE INTO THE REGION WHERE HIGH CLOUDS ARE BEGINNING TO FILER IN. A LOW PRESSURE SYSTEM ACROSS S/SW TEXAS WILL LIFT NE TOWARDS THE AREA TODAY. CIGS COULD DROP TO MVFR TOWARDS THE END OF THE TAF PERIOD AS THE LOWER LEVELS SATURATE FROM THE RAIN.
723 AM EDT SUN APR 5 2015 HIGH PRESSURE IS WEAKENING AHEAD OF A COLD FRONT MOVING TOWARDS SOUTH FLORIDA. /ISSUED 344 AM EDT SUN APR 5 2015/ A COLD FRONT ACROSS NORTH CENTRAL FLORIDA WILL STALL THIS MORNING. HIGH PRESSURE ACROSS THE SOUTHEAST WILL PUSH INTO THE WESTERN ATLANTIC. ANOTHER VERY WARM DAY IS IN STORE FOR SOUTH FLORIDA WITH HIGHS IN THE LOW/MID 80S METRO AREAS AND UPPER 80S TO LOW 90S EVERGLADES AND WEST. LOW LEVEL MOISTURE WILL INCREASE LATE TONIGHT AND MONDAY FROM THE EAST AROUND THE BASE OF HIGH PRESSURE OVER THE WESTERN ATLANTIC.
1035 AM EDT SUN APR 5 2015 HIGH PRESSURE WILL MOVE OFF THE COAST LATE THIS AFTERNOON. HIGH PRESSURE WILL MOVE OFF THE NORTH CAROLINA COAST THIS AFTERNOON. AS THE HIGH PRESSURE MOVES OFF THE COAST A TIGHTER PRESSURE GRADIENT SETS UP FOR THIS AFTERNOON WITH SOME BREEZY WINDS. HIGH TEMPERATURES SHOULD REACH THE LOWER 70S FOR MOST LOCATIONS WITH THE EXCEPTION BEING NORTHERN LANCASTER COUNTY WHICH MAY ONLY REACH THE UPPER 60S. OUR AREA WILL REMAIN IN A SOUTHERLY LOW-LEVEL FLOW MONDAY AND MONDAY NIGHT WITH POPS IN THE HIGH CHANCE RANGE. KEPT HIGH TEMPERATURES MONDAY IN THE LOWER 70S WEST TO THE UPPER 70S EAST. TEMPERATURES WILL BE ABOVE NORMAL AS WEAK UPPER-LEVEL RIDGING DEVELOPS ACROSS THE SOUTHEASTERN STATES. HIGH PRESSURE WILL MOVE EASTWARD AND OFF THE NC COAST BY THIS AFTERNOON.
WITH RETURN SOUTHERLY FLOW TAKING HOLD DURING THE DAY IN THE LOW LEVELS. AFTER MANY LOCATIONS DROPPED BELOW FREEZING THIS MORNING. WITH VALUES RANGING FROM THE LOW TO MID TEENS IN THE FAR EAST. TO THE LOW 20 PERCENT RANGE IN THE WESTERN PART OF THE CWA. THEY ALL AGREE THAT A SLOW BUILDING UPPER RIDGE WILL DOMINATE THE SOUTHEASTERN PORTION OF THE UNITED STATES THROUGH THE LATTER PART OF THE NEW WORK WEEK. THROUGH THIS RIDGE.
TEMPERATURES BY THIS AFTERNOON WILL RANGE FROM THE UPPER 40S CLOSEST TO THE NEW YORK BORDER TO THE LOWER 60S ACROSS THE SOUTH. MIXED RAIN AND SNOW FALLING ACROSS THE NORTHERN TIER OF CENTRAL PA LATE THIS MORNING AS A WEAK RIPPLE OF LOW PRESSURE SLIDES ACROSS NORTH CENTRAL PA. SURFACE TEMPERATURES ARE ALL ABOVE FREEZING AT METAR AND MESONET LOCATIONS. SOUTHERN AREAS WILL WARM TO THE LOWER 60S.
616 AM CDT SUN APR 5 2015 BREEZY EAST WINDS WILL BRING IN COOLER AIR ACROSS NORTHERN PORTIONS OF THE CWA TODAY WHILE SOUTHERN AREAS STAY FAIRLY MILD.
1130 AM EDT SUN APR 5 2015 HIGH PRESSURE WILL RESULT IN DRY CONDITIONS THE REMAINDER OF THE DAY FOLLOWED BY UNSETTLED WEATHER FOR MUCH OF THE UPCOMING WEEK AS MULTIPLE DISTURBANCES PASS OVER THE REGION. DRY WEATHER IS EXPECTED TONIGHT WITH THE SURFACE BOUNDARY IS PROGGED TO REMAIN NEARLY STATIONARY ACROSS THE LOWER GREAT LAKE AND UPPER OHIO VALLEY REGION THROUGH THE REST OF THE PERIOD WITH ZONAL FLOW ALOFT.
526 AM MDT SUN APR 5 2015 A RIDGE OVER THE PLAINS TODAY WILL SHIFT EAST TONIGHT.
OTHERWISE HIGH PRESSURE WILL MOVE ON EAST OF THE REGION TODAY WITH RETURN SOUTHERLY FLOW DEVELOPING. SHOULD BE A FEW DEGREES WARMER THAN YESTERDAY.
GENERALLY ALONG AND N OF A NWD MOVING COASTAL TROF/WARM FRONT. 13 EAST WINDS WILL GRADUALLY SHIFT MORE SOUTHEAST TODAY AS HIGH PRESSURE MOVES OVER THE SOUTHEASTERN STATES.
Winds should become southerly as the warm front continues to move north through the day. Tomorrow morning lows will also reflect some warming, with lows mostly in the lower 60s.
946 AM EDT SUN APR 5 2015 THE TRAILING EDGE OF A WEAK COLD FRONT CURRENTLY EXTENDS ACROSS CENTRAL FLORIDA AND INTO THE NATURE COAST. EASTERLY WIND FLOW WILL PREVAIL TODAY WHICH WILL CAUSE THE HIGHEST CHANCES OF RAIN SHOWERS TO DEVELOP OVER THE INLAND AREAS ALONG THE EAST COAST SEA BREEZE BOUNDARY AND THEN MOVE WESTWARD CONVERGING WITH ANY WEST COAST SEA BREEZE THAT DEVELOPS LATER THIS AFTERNOON. INTERACTION BETWEEN A WEAK FRONTAL BOUNDARY STRETCHING ACROSS CENTRAL FLORIDA AND HIGH PRESSURE TO THE NORTH WILL KEEP AN OVERALL EASTERLY WIND FLOW EXCEPT CLOSER TO THE COAST WHERE THE WINDS WILL TURN ONSHORE WITH AN AFTERNOON SEA BREEZE.
1006 AM EDT SUN APR 5 2015 HIGH PRESSURE WILL MOVE OFF THE COAST LATE THIS AFTERNOON. HIGH PRESSURE WILL MOVE OFF THE NORTH CAROLINA COAST LATE. OUR AREA WILL REMAIN IN A SOUTHERLY LOW-LEVEL FLOW MONDAY AND MONDAY NIGHT WITH POPS IN THE HIGH CHANCE RANGE. KEPT HIGH TEMPERATURES MONDAY IN THE LOWER 70S WEST TO THE UPPER 70S EAST. TEMPERATURES WILL BE ABOVE NORMAL AS WEAK UPPER-LEVEL RIDGING DEVELOPS ACROSS THE SOUTHEASTERN STATES. HIGH PRESSURE WILL GRADUALLY MOVE EASTWARD AND OFF THE NC COAST BY THIS AFTERNOON.
1030 AM EDT SUN APR 5 2015 HIGH PRESSURE OVER VIRGINIA WILL PUSH OFFSHORE LATER TODAY. SOUTHWEST FLOW ON THE BACKSIDE OF THE HIGH WILL STREAM IN WARMER. TNGT THE HIGH WL MOVE OFF THE CST BRINGING A LGT RETURN FLOW TO THE RGN. THIS BNDRY IS XPCTD TO GET CAUGHT UP ALONG 40N FM THE LOW OVR THE MIDDLE OF THE COUNTRY AND STRONG HIGH PRES CENTERED E OF JAMES BAY. GFS/EURO GIVING HINTS OF A CAD SITUATION WED/THU AS THE HIGH PUSHES FURTHER E IN QUEBEC. ALLOWING THE LOW TO THE W TO FINALLY TRACK EWD. THIS WOULD ALLOW FOR WARMER TEMPS. ISSUING SPS FOR VA AND MD AREAS EAST OF THE BLUE RIDGE FOR THIS AFTERNOON.
1146 AM EDT SUN APR 5 2015 A COLD FRONT WILL CROSS THE AREA TODAY.
HIGH PRESSURE CENTERED NEAR THE NC COAST WILL BRING A SOUTHERLY LOW LEVEL FLOW WITH WARMER TEMPERATURES TODAY.
TEMPERATURES BY THIS AFTERNOON WILL RANGE FROM THE UPPER 40S CLOSEST TO THE NEW YORK BORDER TO THE LOWER 60S ACROSS THE SOUTH.
MVFR CIGS WILL DEVELOP THIS EVENING ACROSS THE AREA AHEAD OF A DEVELOPING LOW PRESSURE SYSTEM.
1051 AM CDT Sun Apr 5 2015 High pressure ridge axis off to the east this morning, with gusty southerly flow dominating the region. Latest surface analysis showing high pressure over south central Kentucky with the coldest temperatures, upper 20s to lower 30s, located near the large fair weather system.
A TRANSITION TO MVFR/VFR CONDITIONS EXPECTED LATE THIS MORNING/AFTERNOON AS A WARM FRONT MOVES NORTHWARD ACROSS SOUTH TEXAS. QUASI-ZONAL UPPER PATTERN OVER THE CONUS TODAY WITH AN UPPER TROUGH ENTERING THE WEST COAST MONDAY (GFS DETERMINISTIC) CONSISTENT WITH ONSHORE FLOW OVER THE CWA/MSA DRG THE PERIOD. DISSIPATING WARM FRONT/MSTR MAY CONTRIBUTE TO ISOLD/SCT CONVECTION TODAY.
WINDY CONDITIONS ALONG THE COAST AND BREEZY INLAND WITH FRONT HAS BECOME STATIONARY JUST SOUTH OF THE REGION ACROSS CNTRL FLORIDA AND WINDY/COOLER NORTHEAST FLOW HAS SET UP ALONG THE COAST AS HIGH PRESSURE SITS OVER THE CAROLINAS.
344 PM EDT TUE MAR 17 2015 HIGH PRESSURE WILL CONTINUE BUILDING ACROSS NORTHERN OHIO AND NORTHWEST PENNSYLVANIA TONIGHT.
A POTENT COLD FRONT PLOWED SOUTHWARD THROUGH THE STATE DURING THE EVENING AND OVERNIGHT HOURS. AFTER A RECORD WARM DAY TEMPERATURES HAVE DROPPED BACK DOWN WITH THE COLD FRONTAL PASSAGE INTO THE 40S AND 50S DURING THE OVERNIGHT HOURS. THE HIGHEST AMOUNTS ARE EXPECTED IN AREAS BORDERING OKLAHOMA AND MISSOURI.
TONIGHT AND WEDNESDAY - CONFIDENCE HIGH HIGH PRESSURE WILL DOMINATE THE REGION. WINDS WILL BE LIGHT AS THE CENTER OF THE HIGH MOVES ACROSS NORTHERN ILLINOIS OVERNIGHT AND INTO INDIANA ON WEDNESDAY. WITH 925 TEMPS AROUND -1 DEG C AND GOOD RADIATIONAL COOLING WENT WITH LOWS AT THE LOWER END OF GUIDANCE. IN THE LOWER TO MID 20S.
331 PM CDT TUE MAR 17 2015 HIGH PRESSURE WILL SLIDE TO THE EAST TONIGHT BRINGING THE SURFACE WINDS AROUND TO AN EAST TO SOUTHEAST DIRECTION. WARM AIR ADVECTION WILL BEGIN AND A SUBTLE WARM FRONT GENERATES ACROSS OUR NORTHERN ZONES. IT STILL LOOKS LIKE OUR FAR NORTHERN ZONES WILL HAVE A CHANCE FOR VERY LIGHT RAIN OR SNOW DEPENDING ON TEMPERATURE RIGHT ALONG THE WEAK WARM FRONT. WITH READINGS LIKELY STAYING WARMER THAN MOS GUIDANCE DUE TO CLOUD COVER. THE COOLER MOS VALUES STILL LOOK FINE IN OUR NORTHERN ZONES WHERE THE MID LEVEL CLOUDS WILL BE THICKEST. LOW TEMPERATURES LOOK TO ONCE AGAIN BE IN THE LOWER 30S.
AN UPPER LEVEL LOW WILL MOVE IN TO TX FROM MEXICO TONIGHT.
A FRONTAL BOUNDARY WILL BACKDOOR INTO THE REGION TONIGHT AS LOW PRESSURE CENTER TO DEVELOP OVER SOUTHERN OK. STRONGER CONVECTION DEVELOPING AHEAD OF UPPER LOW OVER WEST TX. WILL REACH AREA LATE TONIGHT AS THE LOW SLOWLY MOVES EAST.
A MOSTLY DRY COLD FRONT WILL CROSS OUR REGION THROUGH THIS EVENING. COLDER CANADIAN HIGH PRESSURE WILL BUILD IN TONIGHT AND PERSIST THROUGH WEDNESDAY NIGHT. A COLD FRONT WILL CROSS THE REGION FROM THE NORTHWEST TO SOUTHEAST LATER THIS AFTERNOON AND INTO THE EVENING HOURS. HIGH PRESSURE WILL BUILD INTO THE REGION THROUGH THE OVERNIGHT HOURS. OVERNIGHT LOWS ARE EXPECTED TO RANGE FROM MID 30S ACROSS THE NORTHERN PORTIONS OF THE FORECAST AREA (WHERE WINDS MAY RELAX MORE TOWARDS SUNRISE) TO THE LOW 40S FURTHER SOUTH. MUCH COOLER TEMPS ARE EXPECTED ON WEDNESDAY AS CANADIAN HIGH PRESSURE REMAINS IN CONTROL OVER CENTRAL NC.
254 PM CDT TUE MAR 17 2015 UPPER LEVEL LOW CURRENTLY LOCATED OVER THE EASTERN PARTS OF INCREASING RAIN CHANCES FROM THE WEST TO THE EAST. PRECIPITATION WILL CLEAR BY LATE WEDNESDAY ONCE THE LOW PUSHES EAST OF THE REGION. TOWARDS THE END OF THE WORK WEEK ANOTHER UPPER LEVEL LOW WILL DEEPEN OVER THE BAJA REGION AND BRING WITH IT ANOTHER CHANCE OF RAIN.
GIVEN RATHER LOW SNOW RATIOS WITH TEMPERATURES NEAR FREEZING. THE HIGHEST AMOUNTS ARE STILL ANTICIPATED ACROSS THE SOUTHWEST WITH THE COOLEST TEMPERATURES AND LONGEST DURATION OF SNOW. COLD HIGH PRESSURE WAS OVER EASTERN MONTANA AND WESTERN NORTH DAKOTA. THE HIGH IS FORECAST TO CONTINUE MOVING SOUTHEAST TODAY.
444 PM CDT TUE MAR 17 2015 UPPER LEVEL LOW IS LIFTING NORTHEAST ACROSS MEXICO AND INTO WESTERN TEXAS. AS THE LOW LIFTS OUT AND NORTHEASTWARD OVER WESTERN TEXAS TONIGHT IT OPENS UP INTO A TROUGH.
SHOWER ACTIVITY ON RADAR IS PRETTY LIGHT AND TEMPERATURES HAVE NUDGED ABOVE FREEZING MOST AREAS SO NOT EXPECTING IMPACTS FROM AFTERNOON PRECIPITATION AND AMOUNTS SHOULD BE LIGHT. BREAKDOWN OF THE EASTERLY SURFACE FLOW WILL SUPPORT WARMER TEMPERATURES PARTICULARLY FOR WESTERN AREAS.
352 PM EDT TUE MAR 17 2015 UPPER AIR PATTERN CONSISTS 500 MB TROUGH OVER SOUTH CENTRAL CANADA INTO THE GREAT LAKES REGION WITH THIS TROUGH DIGGING INTO NEW ENGLAND. THEY ARE VERY DRY AND WELL MIXED UP TO ABOUT 700 MB OR SO WITH INVERTED-V SOUNDINGS IN THE LOW LEVELS. THIS WOULD BE VERY HARD TO GET ANY LAKE EFFECT SNOW SHOWERS WITH THE DRY AIR ESPECIALLY IN THE LOW LEVELS AND CUT POPS BACK FOR THIS FORECAST PERIOD ACROSS THE EASTERN CWA. WIDESPREAD PRECIPITATION CHANCES APPEAR ON THE LOW SIDE.
THEN AN UPPER LEVEL RIDGE IS FORECAST TO BUILD INTO THE REGION WEDNESDAY BRINGING WARM AND DRY CONDITIONS WITH MOSTLY SUNNY CONDITIONS EXPECTED OVER THE AREA BY WEDNESDAY AFTERNOON.
AS AN UPPER LOW MOVES FROM MEXICO NORTHEAST INTO TEXAS. THE DOWNSTREAM UPPER RIDGE WILL REMAIN OVER THE AREA.
117 PM EDT TUE MAR 17 2015 SPRINKLES HAVE DEVELOPED NEAR THE COLD FRONT MOVING THROUGH THE AREA. CLOUDS ARE SPREADING SOUTH OVER THE REGION IN ASSOCIATION WITH A COLD FRONT. COLD FRONT NOW NEARING FAR NORTHERN KENTUCKY WITH WINDS STARTING TO TURN NORTHERLY. MAIN FEATURE OF INTEREST THIS MORNING CONTINUES TO BE A COLD FRONT DIVING SOUTHWARD INTO THE OHIO RIVER VALLEY. SOUTHWEST FLOW AHEAD OF THE FRONT IS HELPING TO CREATE A GOOD RIDGE/VALLEY SPLIT ACROSS THE AREA THIS MORNING WITH COOL 40 DEGREE READINGS IN THE VALLEYS WITH TEMPERATURES NEAR 60 IN THE BLUEGRASS AND SOME OF THE RIDGES. THIS WILL PUT HIGHS INTO THE LOWER 60S FOR MOST AREAS TODAY. ALLOWING VALLEY LOCATIONS TO FALL WELL INTO THE 20S WITH READINGS IN THE LOWER 30S ON THE RIDGES.
ISSUED BY NATIONAL WEATHER SERVICE PITTSBURGH PA 120 PM EDT TUE MAR 17 2015 A CROSSING COLD FRONT WILL MAINTAIN CLOUDS AND POSSIBLY SOME LIGHT SHOWERS TODAY.
132 PM EDT TUE MAR 17 2015 COLD FRONT WILL MOVE ACROSS NORTHERN OHIO AND NW PA THIS MORNING. HIGH PRESSURE WILL BEGIN TO BUILD INTO THE AREA THIS AFTERNOON.
SOUTHERLY WINDS ACROSS THE PALMER DIVIDE HAVE INDUCED A PRETTY STRONG DENVER CYCLONE WHICH HAS GENERATED A BOUNDARY THAT STRETCHES ACROSS THE AIRPORT AND COWN TO SOUTHERN AURORA. MOISTURE WILL BE INCREASING OVER THE STATE AS AN UPPER LOW LINGERS OVER NEW MEXICO AND WESTERLY FLOW FROM THE NORTHWEST BEGINS INCREASING.
BUT WITH THE HIGH ARRIVING NEAR KHTS BY MORNING. AN UPPER LOW CURRENTLY OVER NORTHERN MEXICO WILL CONTINUE TO OPEN UP AND GET ABSORBED INTO THE WESTERLIES TONIGHT AND WEDNESDAY. WOULD NOT RULE OUT SOME SNOW OCCURRING DUE TO SURFACE WET BULB TEMPS EXPECTED TO BE NEAR FREEZING AND A LACK OF SIGNIFICANT WARM AIR ALOFT. CONDITIONS WERE MOSTLY MVFR DUE TO CEILINGS EARLY THIS AFTERNOON AS A COLD FRONT WAS MOVING THROUGH.
400 PM EDT TUE MAR 17 2015 HIGH PRESSURE WILL ALLOW FOR DRY CONDITIONS ACROSS THE REGION THROUGH WEDNESDAY.
428 PM EDT TUE MAR 17 2015 WV IMAGERY AND RUC ANALYSIS INDICATED NW MID/UPPER LEVEL FLOW THROUGH THE NORTHERN GREAT LAKES BETWEEN A DEEP TROUGH OVER HUDSON BAY AND A RIDGE FROM THE WRN PLAINS INTO WRN CANADA. AND 850 MB TEMPS IN THE - 8C TO -12C RANGE HIGHS WILL CLIMB INTO THE LOWER 30S EAST TO THE LOW 40S SOUTH AND WEST.
SOUTHERN STREAM BLOCKING PATTERN IS BREAKING DOWN AS A CUT-OFF LOW OVER NORTHERN MEXICO WILL OPEN UP AND EJECT ACROSS THE SOUTHERN PLAINS TONIGHT AND WILL APPROACH THE LOWER MISSISSIPPI VALLEY LATE WEDNESDAY. SUBTROPICAL RIDGE OVER THE GULF OF MEXICO AND FLORIDA WILL BE SUPPRESSED SOUTH AS THE U/L SHORT WAVE MOVES ACROSS THE SOUTHERN PLAINS.
A TROUGH OF LOW PRESSURE DEVELOPING OFF THE CALIFORNIA COAST WILL BRING INCREASING ONSHORE FLOW. ALLOWING COOLER MARINE AIR TO OVERSPREAD THE REGION.
137 PM EDT TUE MAR 17 2015 HIGH PRESSURE WILL BUILD INTO THE REGION THROUGH WEDNESDAY.
ISSUED BY NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX 1204 PM CDT Tue Mar 17 2015 /18Z TAFS/ A cold front has moved into the Big Country and will continue pushing south through the area. A weak cold front will push into West Central Texas today.
356 PM CDT TUE MAR 17 2015 HIGH PRESSURE CURRENTLY CENTERED OVER SE SOUTH DAKOTA WILL CONTINUE ITS TREK SE INTO AND ACROSS THE STATE THIS EVENING AND OVERNIGHT. THE UPPER MIDWEST WILL REMAIN IN THE SAME GENERAL WEATHER PATTERN WITH AN UPPER RIDGE OUT WEST AND A GENERAL TROUGH OVER THE GREAT LAKES/EASTERN U.
242 PM CDT Tue Mar 17 2015 An upper low is currently moving northward toward southwest Texas from northern Mexico. A cold front is pushing southward through the CWA this afternoon with showers across the area. There is good upper lift associated with the upper low as indicated by the 500 mb omega values and vorticity maximum over the area. High temperatures today are expected to be below normal and about 15 degrees cooler than yesterday across the Permian Basin and southeast New Mexico behind the front. The area of rain and thunderstorms is expected to shift northward overnight tonight as the upper low moves north over the area. The precipitation is expected to decrease in coverage beginning Wednesday morning as the upper low moves northeast of the CWA.