Aikyam-Lab/Synoptic-Bench huggingface dataset:
THE LARGE-SCALE ENVIRONMENT WILL FEATURE THE CONTINUED WESTWARD RETROGRESSION OF A MID-LEVEL RIDGE OVER THE GULF BASIN AND A SLOW EQUATORWARD PENETRATION OF A WEAK MIDLATITUDE TROUGH/CYCLONIC VORTICITY LOBE SOUTHWARD TO THE FLORIDA PENINSULA. A WEAK RIDGE OF HIGH PRESSURE WILL REMAIN NEAR THE FLORIDA KEYS THIS AFTERNOON AND TONIGHT.
NO CHANGES WERE NEEDED FOR THE MID MORNING UPDATE AS THE PASSING COLD FRONT IS HERALDING LOWER DEWPOINTS AND CLOUDINESS.
951 AM EDT MON AUG 24 2015 A WEAK COLD FRONT WILL CROSS THE REGION.
1004 AM EDT MON AUG 24 2015 HIGH PRESSURE WILL MOVE OFFSHORE TODAY AS A WEAK COLD FRONT APPROACHES FROM THE WEST LATE.
UPPER TROUGH DEEPENS. ISOLATED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON MAINLY ALONG AND SOUTHEAST OF THIS LOW AND FRONTAL BOUNDARY WHERE THE BEST MOISTURE AND INSTABILITY RESIDE. AS WELL AS THE INHIBITING RIDGING ALOFT. STILL THINK THE RIDGE WILL BE DIFFICULT TO OVERCOME WITH ONLY WEAK NEAR-BOUNDARY CONVERGENCE AND WEAK FLOW ABOVE THE BOUNDARY LAYER. NORTH AND CENTRAL TEXAS WILL BE SITUATED ON THE EASTERN PERIPHERY OF A STRONGLY AMPLIFIED RIDGE ALOFT.
A ridge/trough pattern was strengthening over North America as a strong upper low slowly moves through the northern Great Lakes region and an upper level ridge builds over the west. The upper ridge continues to build through tonight with upper level northwesterly flow continuing over the central Plains. This will slowly move east today as the upper level ridge builds. Weak return flow will develop today as the ridge moves east.
629 AM CDT MON AUG 24 2015 HIGH PRESSURE ALOFT REMAINED ANCHORED ACROSS TEXAS AND EXTENDED WEST TO SRN CALIFORNIA AND EAST INTO THE FLORIDA PENINSULA THIS MORNING. NORTH OF THE HIGH. RIDGING EXTENDED FROM THE FOUR CORNERS. A CLOSED LOW WAS PRESENT OVER SWRN ONTARIO WITH A TROUGH OF LOW PRESSURE EXTENDING SSEWD INTO THE LP OF MICHIGAN. HIGH PRESSURE WAS ANCHORED ACROSS THE CENTRAL AND HIGH PLAINS OF THE DAKOTAS. A SECONDARY SHOT OF HIGH PRESSURE WILL BUILD SOUTH FROM THE EASTERN DAKOTAS SWD TO THE MISSOURI RIVER TONIGHT. WITH HIGH PRESSURE BUILDING EAST.
AN UPPER TROUGH OFF THE PACIFIC NORTHWEST COAST WILL MAINTAIN DRY SOUTHWEST FLOW ALOFT OVER WESTERN WASHINGTON THROUGH MIDWEEK. THE UPPER TROUGH WILL MOVE ACROSS THE AREA FOR A CHANCE OF SHOWERS LATE THIS WEEK AND OVER THE WEEKEND. AN UPPER LEVEL TROUGH CENTERED ALONG 140 W OFF THE B. IT WILL REMAIN DRY THROUGH MID WEEK BUT ONSHORE FLOW WILL RESULT IN SLIGHTLY COOLER HIGH TEMPERATURES. HIGHS TODAY WILL BE A BIT COOLER IN THE MID 70S AROUND PUGET SOUND AND THE SW INTERIOR. THE REST OF THE INTERIOR SHOULD START OFF MOSTLY SUNNY ON TUESDAY AND PERHAPS A COUPLE DEGREES WARMER WITH LESS SMOKE/HAZE.
ISOLATED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON MAINLY ALONG AND SOUTHEAST OF THIS LOW AND FRONTAL BOUNDARY WHERE THE BEST MOISTURE AND INSTABILITY RESIDE. 30 /ISSUED 654 AM CDT MON AUG 24 2015/ A WEAK COLD FRONT THAT EXTENDED SOUTHEAST OF A KTRL TO KMKN LINE AT 1130Z. AS WELL AS THE INHIBITING RIDGING ALOFT. STILL THINK THE RIDGE WILL BE DIFFICULT TO OVERCOME WITH ONLY WEAK NEAR-BOUNDARY CONVERGENCE AND WEAK FLOW ABOVE THE BOUNDARY LAYER. NORTH AND CENTRAL TEXAS WILL BE SITUATED ON THE EASTERN PERIPHERY OF A STRONGLY AMPLIFIED RIDGE ALOFT.
1057 AM EDT MON AUG 24 2015 A SLOW MOVING COLD FRONT WILL CROSS THE AREA FROM TODAY THROUGH TUESDAY BRINGING A CHANCE OF SHOWERS AND A FEW THUNDERSTORMS. AN UPPER LEVEL LOW PRESSURE SYSTEM WILL MOVE OVER THE GREAT LAKES REGION THROUGH MID WEEK, AND PROVIDE FOR UNSETTLED WEATHER IN THE NORTHEAST. LATER IN THE WEEK THE UPPER LEVEL LOW WILL MAKE ITS MOVE EAST, CONTINUING THE CHANCES FOR RAIN. A SLOW MOVING COLD FRONT WITH SCATTERED LIGHT SHOWERS IN WESTERN NY IS MAKING ITS WAY EAST TODAY. MAIN STORY FOR THE SHORT TERM FORECAST CONTINUES TO BE CENTERED AROUND THIS AFOREMENTIONED COLD FRONT WHICH WILL VERY SLOWLY TRACK EASTWARD. VERTICALLY STACKED LOW PRESSURE WILL ALSO SLOWLY APPROACH FROM THE GREAT LAKES REGION.
1013 AM CDT MON AUG 24 2015 HIGH PRESSURE REMAINS FIRMLY IN PLACE OVER THE REGION.
The 8 am regional surface analysis showed a cold front across central GA & AL, and an ill-defined pressure pattern across our forecast area. Vapor imagery and upper air data showed a long wave trough in the early stages of development over the eastern CONUS. Although the surface cold front won't move into our forecast area until later tonight and Tuesday, there was a pocket of very dry air above 700 mb over our region.
A RIDGE OF HIGH PRESSURE OVER THE REGION WILL PERSIST THROUGH THE EARLY PART OF THE WEEK. A RIDGE CENTERED OVER UTAH THIS MORNING WILL AMPLIFY TODAY AND LEAD TO ABOVE NORMAL TEMPERATURES ACROSS A MAJORITY OF THE AREA. AS THE RIDGE AXIS SHIFTS EAST TOMORROW.
956 AM EDT MON AUG 24 2015 COLD FRONT WITH LIMITED MOISTURE THIS MORNING. AS A LARGE HIGH PRESSURE SYSTEM SAILS SLOWLY ACROSS. COLD FRONT IS PUSHING INTO THE MOUNTAINS AT THIS HOUR. A MOISTURE STARVED COLD FRONT WILL PUSH THROUGH THE REGION THIS MORNING. DEEP UPPER TROF SETTLES INTO E NORTH AMERICA ON TUE. BROAD CYCLONIC FLOW AROUND UPPER LOW OVER GREAT LAKES REGION WILL BE RESPONSIBLE FOR SENDING PERTURBATIONS THRU THE OH VALLEY TUE AND WED. WILL STAY CLOSE WITH COOLER NUMBERS FROM PREV FCST. MODELS SUGGEST UPPER LOW COULD IMPACT THE REGION LATE IN THE PERIOD.
Temps this morning running similar to Sun and are expected to be just slightly warmer due to a shallower marine layer from around 2200 ft yesterday down to around 1600 ft this morning. SWly flow aloft will prevail over Norcal for the next several days with strong high pressure over the Desert SW/4-Corners area and low pressure centered off the B. May have to include some PoPs on FRI over the Nrn zones as subtropical moisture spreads Nwd in advance of the deepening ern Pac trof.
HIGH PRESSURE AND DRY WEATHER SHOULD BE THROUGH THE REST OF THE SHORT TERM. CHATTANOOGA AIRPORT, TN 88 60 84 59 / 20 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 86 59 80 57 / 20 0 0 0 OAK RIDGE, TN 86 57 81 56 / 20 0 0 0 TRI CITIES AIRPORT, TN 84 55 79 52 / 20 0 0 0.
952 AM EDT MON AUG 24 2015 A COLD FRONT APPROACHING FROM THE WEST WILL CROSS THE MID ATLANTIC STATES TONIGHT. HIGH PRESSURE WILL GRADUALLY BUILD INTO THE AREA DURING THE MIDWEEK AND SETTLE OVER THE AREA FOR THE START OF THE WEEKEND. HIGH PRESSURE WILL RIDGE INTO THE MIDDLE ATLANTIC REGION ON TUESDAY AND REMAIN THERE THROUGH THE FIRST PART OF THE WEEKEND. THIS WILL LEAD TO A DRY PATTERN WITH AFTERNOON HIGH TEMPERATURES RANGING FROM THE UPPER 70S TO THE LOWER 80S.
DRY SLOT IN THE LOWER LEVELS WILL KEEP OUR AREA DRY TODAY. EXPECT TEMPERATURES TO BE WARMER /2-4 DEGREES/ THAN YESTERDAY WITH LESS SMOKE OVER THE AREA. THE REGION WILL REMAIN BETWEEN MOIST SOUTHWESTERLY FLOW ON THE BACK SIDE OF THE UPPER LEVEL RIDGE TO OUR EAST AND COLDER SOUTHWESTERLY FLOW AHEAD OF DEEPENING UPPER LEVEL LOW OFF THE COAST OF WESTERN CANADA. THIS WILL KEEP THE REGION DRY THROUGH TUESDAY WITH HIGH BASED CU DEVELOPMENT OVER THE HIGHER TERRAIN OF SOUTHWEST IDAHO MONDAY AND TUESDAY AFTERNOON.
/ISSUED 405 AM EDT MON AUG 24 2015/ SLIGHTLY DRIER AIR IN THE LOWER LEVELS AND A SLIGHTLY STRONGER EASTERLY FLOW TODAY IS EXPECTED TO PUSH THE ATLANTIC SEA BREEZE INLAND WITH CONVECTION DEVELOPING EITHER ACROSS THE WESTERN SUBURBS OR JUST INLAND. A TROUGH IS FORECAST TO MOVE INTO AND AMPLIFY ACROSS THE EASTERN SEABOARD OF THE U. AN ASSOCIATED COLD FRONT IS FORECAST TO MOVE INTO NORTH FL LATE TUE AND HANG UP THERE ON WED.
945 AM PDT MON AUG 24 2015 A LARGE UPPER-LEVEL RIDGE BUILDING OVER THE FOUR CORNERS REGION WILL BRING A WARMING TREND AND ABOVE NORMAL TEMPERATURES THIS WEEK. HIGH PRESSURE BUILDING FROM THE SOUTH TODAY HAS WARMED UP THE AIR MASS AND SHRUNK THE MARINE LYR TO AROUND 1200'. PROFILERS AND SURFACE OBS TRENDING WARMER BY 2-4 DEGREES IN MOST LOCATIONS SO EVERYTHING IS POINTING TOWARDS A WARMER DAY TODAY AND THE FORECAST APPROPRIATELY REFLECTS THAT.
AN UPPER LOW IN THE SOUTHEAST GULF OF ALASKA WILL BE DRIFTING SOUTH BETWEEN 130W AND 140W OFF THE PACIFIC NORTHWEST COAST THROUGH THE WEEK.
SATELLITE AND UA ANALYSES INDICATING THAT HIGH PRESSURE IS SETTLING OVER US AT THE MID/UPPER LEVELS. A NORTHEASTERN-BASED COLD FRONT ON THE HEELS OF THIS ACTION LATE TONIGHT INTO EARLY TUESDAY MAY EITHER ENHANCE THIS ACTIVITY OR SCOUR IT OUT. THE HEAT IN COMBINATION WITH A SLOW MOVING COLD FRONT TO OUR NORTH COULD HELP TO INITIATE SOME SHOWERS AND THUNDERSTORMS THIS AFTERNOON.
602 AM CDT MON AUG 24 2015 A RATHER DEEP UPPER LOW FOR LATE AUGUST WAS LOCATED JUST NORTH OF LAKE SUPERIOR EARLY THIS MORNING. AT THE SURFACE, THE FRONTAL BOUNDARY THAT BROUGHT THE SCATTERED SHOWERS TO PARTS OF THE AREA YESTERDAY WAS WELL OFF TO OUR EAST WHILE HIGH PRESSURE WAS SITUATED OVER THE NORTHERN PLAINS. WITH THE STEEP LOW/MID LEVEL LAPSE RATES ASSOCIATED WITH THE DEEP UPPER TROF ACROSS THE GREAT LAKES TODAY, MODELS SUGGEST AN INCREASE IN CLOUD COVER TO OUR NORTH, WHICH SHOULD SHIFT SOUTHWARD WITH TIME LATER THIS AFTERNOON. MAINLY A TEMPERATURE FORECAST THROUGH THE WORK WEEK AS HIGH PRESSURE KEEPS THE WEATHER BENIGN FOR MUCH OF THE MIDWEST. COOLER TEMPS AGAIN TONIGHT AND INTO TOMORROW WITH MAX TEMPS IN THE 70S THROUGH MIDWEEK WITH WEAK WIND PATTERN UNDER THE HIGH. BUT SLOWLY TRENDING WARMER.
801 AM EDT MON AUG 24 2015 HIGH PRESSURE RIDGE OVER PENNSYLVANIA WILL SLOWLY WEAKEN AS A COLD FRONT APPROACHES AND THEN MOVES ACROSS THE REGION TODAY. A RELATIVELY DEEP MID-TROPOSPHERIC TROUGH WILL DOMINATE THE PATTERN OVER PENNSYLVANIA FOR THE REMAINDER OF THE WEEK. HIGHS SHOULD RANGE FROM THE M70S OVR THE NW MTNS TO THE M/U80S ACROSS THE LOWER SUSQ VALLEY. SCT SHRA/TSRA ALONG COLD FRONT WILL LINGER INTO THE EARLY EVENING EAST OF KIPT AND KMDT. TO NR 80F ACROSS THE LOWER SUSQ VALLEY. ALL MED RANGE GUIDANCE CONTINUES TO INDICATE MID-LATE WEEK WX WILL BE DOMINATED BY LINGERING UPPER TROUGH OVR THE NORTHEAST CONUS.
High pressure over Idaho and western Montana will promote generally light diurnal winds through today at area terminals. The biggest change was to the high temperatures through the middle of the week.
/ISSUED 442 AM CDT MON AUG 24 2015/ (Today and Tonight) Weak cold front has stalled and extends roughly from just south of Mertzon to Eden to about midway between Brady and Brownwood. Temperatures today will be similar to yesterday along our southern tier of counties, and a few degrees cooler across our central and northern counties. Overnight lows are expected to be mostly in the lower 70s.
IFR/MVFR CONDITIONS AT CSV THROUGH MID-MORNING, WILL GAVE WAY TO VFR CONDITIONS AFTER 15Z, FOLLOWING PASSAGE OF A COLD FRONT.
THE UPPER LOW OVER NW WI WILL TRACK TO S IA BY 00Z SUN WHILE THE VORT LOBE CURRENTLY EXTENDING INTO WEST CENTRAL WI WILL ROTATE WWD AWAY FROM WI. THE WEAK LOW AND INVERTED TROUGH FROM NE IA EXTENDING TO THE SE WILL SHIFT SWD THROUGHOUT THE DAY. ANOTHER WEAKER INVERTED TROUGH IS CURRENTLY TRACKING WWD ACROSS LAKE MI WITH SHOWER DEVELOPMENT OVER THE LAKE. DRIER AIR ON NELY WINDS WILL BEGIN TO ARRIVE AFTER THE PASSAGE OF THE WEAK INVERTED TROUGH FOR THE AFTERNOON OVER FAR ERN WI.
THEY SHOW HIGH PRESSURE CONTINUING TO WEAKEN AS LOW PRESSURE DEVELOPS OVER THE DEEP SOUTH. THIS LOW WILL HAVE AN ASSOCIATED COLD FRONT THAT WILL SLOWLY MOVE TOWARDS SOUTH FLORIDA OVER THE NEXT COUPLE OF DAYS. HIGH PRESSURE WILL BUILD BEHIND THE FRONT, AND A COOLER, DRIER AIR MASS WILL MOVE INTO THE AREA.
439 AM EDT SAT MAR 19 2016 AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE AREA ON TODAY WITH HIGH PRESSURE BUILDING EAST FROM ONTARIO. THE HIGH WILL CREST OVER THE AREA ON SUNDAY WHILE LOW PRESSURE ORGANIZES ALONG THE MID- ATLANTIC COAST. DAYTIME TEMPERATURES ARE FORECAST TO HIT UPPER LOW TO MID 20S ACROSS THE NORTHERN 1/2 OF THE CWA WHILE CENTRAL AND DOWNEAST WILL SEE UPPER 20S TO LOWER 30S. INVERSION SETTING UP BY EARLY SUNDAY MORNING WILL LEAD TO TEMPERATURES HITTING THE SINGLE NUMBERS W/AREAS ACROSS THE N AND W HITTING BELOW 0F ESPECIALLY THE LOW LYING AREAS. HIGH PRESSURE WILL CROSS THE REGION EARLY SUNDAY WITH ABUNDANT SUNSHINE TO START THE DAY BEFORE HIGH CLOUDS BEGIN TO INCREASE DURING SUNDAY AFTERNOON.
346 AM EDT SAT MAR 19 2016 HIGH PRESSURE WILL KEEP DRY WEATHER IN OUR AREA INTO SUNDAY.
A STRONGER SUN AS SPRING APPROACHES ALLOWS HIGH TEMPERATURES ON SUNDAY TO BE A LITTLE WARMER THAN TODAY AS COLD ADVECTION ENDS.
HIGH PRESSURE ACROSS THE WESTERN UNITED STATES WILL PRODUCE DRY AND WARM CONDITIONS ACROSS NORTHERN ARIZONA THROUGH THE WEEKEND.
A WEAK COLD FRONT WILL DISSIPATE NEAR THE COAST TODAY. THE WEATHER BECOMES SIGNIFICANTLY MORE ACTIVE BEGINNING EARLY SUNDAY WHEN A WARM FRONT WILL BE QUICKLY FOLLOWED BY A COLD FRONT.
LOWS MAY REACH THE LOW 20S FOR A FEW HOURS OVERNIGHT. WHERE LOWS IN THE LOWER 20S ARE EXPECTED. TEMPERATURES OVERNIGHT WILL FALL BELOW FREEZING ACROSS MUCH OF CENTRAL AND ALL OF NORTHERN OKLAHOMA. COOL TEMPERATURES WILL PERSIST THROUGH THE WEEKEND AS THE UPPER LEVEL TROUGH SLOWLY MAKES ITS WAY OUT OF THE AREA. SUNDAY MORNING WILL AGAIN SEE FREEZING TEMPERATURES.
303 AM PDT SAT MAR 19 2016 High pressure over the Sierra and western Nevada will bring dry weather, generally light winds and well above average temperatures today.
A COLD FRONT IS ALSO MOVING ACROSS THE REGION. ROBUST MCS THAT EXITED THE LOWER TX COAST SHORTLY AFTER MIDNIGHT CONTINUES EWD ACROSS THE NW GULF. WILL INCREASE FURTHER THROUGH THE MORNING HRS AS THE PRESSURE GRADIENT TIGHTENS BETWEEN THE DEPARTING FRONT AND A STOUT HIGH PRESSURE RIDGE BUILDING OVER THE PLAINS. HAVE ISSUED A WIND ADVISORY FOR ROUGHLY THE SE HALF OR SO OF THE AREA WHERE BOTH NUMERICAL GUIDANCE AND MODEL PROGGED WINDS AT THE SFC AND WITHIN THE LOWEST FEW THOUSAND FT INDICATE CRITERIA CONDITIONS HAVE THE BEST CHANCE OF BEING MET.
AFTER NEARLY 2 WEEKS OF MUCH WARMER THAN NORMAL WX. THIS WEEKEND WILL BRING A SHOT OF COOLER THAN NORMAL AIR. THEN RECOVER INTO THE LOW TO MID 50S THROUGH THE DAY. THE UPPER TROUGH WILL CONTINUE TO DIG ACROSS TN TONIGHT THROUGH SUNDAY. POSSIBLY FREEZING.
348 AM EDT SAT MAR 19 2016 COOLER AND DRIER WEATHER WILL PERSIST THROUGH THE WEEKEND.
327 AM PDT SAT MAR 19 2016 HIGH PRESSURE ALOFT WILL CONTINUE INLAND HIGH TEMPERATURES AROUND 10 DEGREES ABOVE AVERAGE THROUGH THE WEEKEND.
422 AM EDT SAT MAR 19 2016 HIGH PRESSURE WILL BUILD FROM ONTARIO INTO QUEBEC.
/ISSUED 313 PM EDT FRI MAR 18 2016/ LATEST SURFACE ANALYSIS SHOWS FRONTAL BOUNDARY WHICH IS BECOMING MORE OF A WARM FRONT WITH TIME IS CURRENTLY SITUATED ACROSS THE FAR SOUTHERN TIER OF OUR WARNING AREA. LOW PRESSURE TO FORM CONSIDERABLY FURTHER NORTH THAN PREVIOUS RUNS AND PROGRESS OVER NORTH GA SAT MORNING GIVING MOST ALL LOCATIONS AN EXTENDED DURATION OF SW WINDS AHEAD OF FRONTAL BOUNDARY. QUIET WEATHER IS EXPECTED THROUGH MUCH OF THE WEEK BEHIND THE WEEKEND WEATHER AS HIGH PRESSURE SETS UP OVER THE REGION.
THIS WILL DISLODGE THE REX BLOCK IN PLACE OVER CENTRAL NOAM WITH THE SOUTHERN UPPER LOW COMPONENT OF THIS CONFIGURATION THEN WOBBLING SOUTHEAST INTO THE OHIO VALLEY AND THEN PHASING STRONGLY WITH THE ENCROACHING ARCTIC JET STREAM ENERGY.
A BROAD UPPER LEVEL TROUGH WILL REMAIN OVER THE REGION TONIGHT AND INTO THE DAY SATURDAY. THE TROUGH WILL SLIDE OFF TO THE EAST SATURDAY NIGHT. THE HIGH WILL REMAIN IN PLACE UNTIL SUNDAY NIGHT WHEN IT MOVES EAST AS A TROUGH DIGS DOWN THE LEE OF THE ROCKIES. THE EAST WILL STILL BE COOL UNDER THE INFLUENCE OF HIGH PRESSURE ON SUNDAY.
DRY WEATHER IS EXPECTED THIS WEEKEND WITH HIGH PRESSURE BUILDING IN.
/issued 235 PM CDT FRI MAR 18 2016/ A cold front moved through the Permian Basin this morning and is currently located near I-10. Low clouds and cold air advection behind the cold front will remind us winter has not gone completely with low temps tonight and tomorrow night in most areas dropping well into the 30s, and even below freezing in a few locations. High pressure building south will also increase the pressure gradient across the Guadalupe Mountains causing strong winds at Guadalupe Pass tonight into early Saturday.
131 AM EDT SAT MAR 19 2016 HIGH PRESSURE WILL KEEP DRY WEATHER IN OUR AREA INTO SUNDAY.
426 AM EDT SAT MAR 19 2016 HIGH PRESSURE WILL KEEP DRY WEATHER IN OUR AREA INTO SUNDAY.
326 AM EDT SAT MAR 19 2016 COLD CANADIAN HIGH PRESSURE WILL BUILD INTO THE REGION FOR MUCH OF THIS COMING WEEKEND. LOW PRESSURE WILL MOVE OFF THE CAROLINA COAST SUNDAY EVENING.
1232 AM CDT SAT MAR 19 2016 ***06Z TAF ISSUANCE FORECAST DISCUSSION AT BOTTOM*** HIGH PRESSURE HAS BEEN TRYING TO BUILD SOUTH FROM NORTHWEST ONTARIO INTO NORTHEAST MINNESOTA TODAY. BUT THIS CLEARING LINE MAY STALL TONIGHT AS HIGH PRESSURE BUILDING IN ACROSS THE NORTHERN HIGH PLAINS FINALLY PUSHES THE UPPER LOW OVER THE MID/UPPER MISSISSIPPI VALLEY EAST. SATURDAY WILL SEE A MIX OF SUN AND CLOUDS AS THE UPPER LOW SLIGHTLY DEEPENS OVER SOUTHERN MINNESOTA/NORTHERN IOWA. THERE IS A CHANCE FOR A FEW SNOW SHOWERS ACROSS THE LAKE MILLE LACS TO BRAINERD LAKES REGION BEFORE THE LOW MOVES SOUTH.
WILL LOWER POPS TO THE HIGH CHC CATEGORY (50%). AS A COLD FRONT MOVES INTO THE REGION.
ROBUST MCS THAT EXITED THE LOWER TX COAST SHORTLY AFTER MIDNIGHT CONTINUES EWD ACROSS THE NW GULF. WILL INCREASE FURTHER THROUGH THE MORNING HRS AS THE PRESSURE GRADIENT TIGHTENS BETWEEN THE DEPARTING FRONT AND A STOUT HIGH PRESSURE RIDGE BUILDING OVER THE PLAINS. HAVE ISSUED A WIND ADVISORY FOR ROUGHLY THE SE HALF OR SO OF THE AREA WHERE BOTH NUMERICAL GUIDANCE AND MODEL PROGGED WINDS AT THE SFC AND WITHIN THE LOWEST FEW THOUSAND FT INDICATE CRITERIA CONDITIONS HAVE THE BEST CHANCE OF BEING MET.
MUCH QUIETER WEATHER WILL MOVE INTO THE REGION OVER THE WEEKEND AS AN UPPER RIDGE OVER THE WESTERN CONUS EDGES EASTWARD. STILL ON THE COOL SIDE ACROSS THE CWA SATURDAY UNDER A NORTHERLY UPPER FLOW ON THE WEST SIDE OF AN UPPER LOW THAT WILL DRIFT SOUTH ACROSS IOWA. MUCH WARMER FOR SUNDAY AS THE UPPER RIDGE MOVES INTO THE REGION AND MID LEVEL TEMPS WARM TO AROUND 0-2C FROM CURRENT TEMPS OF ABOUT -10 TO -15C.
328 AM CDT SAT MAR 19 2016 LIGHT SNOW WILL GRADUALLY DIMINISH TODAY AS THE UPPER LEVEL TROUGH OF LOW PRESSURE RESPONSIBLE FOR THE SNOW SHIFTS SOUTHEAST OF THE REGION.
SKIES WILL CLEAR OVERNIGHT AS HIGH PRESSURE MAINTAINS MOSTLY SUNNY CONDITIONS THROUGH THE WEEKEND.
HIGH PRESSURE WILL BRING DRY AND MILD WEATHER OVER THE WEEKEND.
658 AM EDT SAT MAR 19 2016 HIGH PRESSURE WILL KEEP DRY WEATHER IN OUR AREA INTO SUNDAY.
RAIN CHANCES WILL DEVELOP BY SUNDAY AS AN UPPER LEVEL TROUGH APPROACHES THE COAST.
DRYING SETS IN OVER THE REGION SATURDAY AND SATURDAY NIGHT AS A RIDGE OF HIGH PRESSURE BUILDS TO THE WEST. TEMPERATURES WILL CONTINUE TO WARM INTO SUNDAY AS DRY WEATHER CONTINUES UNDER THE RIDGE OF HIGH PRESSURE. A DEEP LOW PRESSURE SYSTEM OFF THE COAST OF THE PACIFIC NORTHWEST WILL DRIVE THE RIDGE AXIS OVER THE AREA SUNDAY AFTERNOON.
A WEAK LOW PRESSURE SYSTEM WILL MOVE THROUGH THE REGION EARLY IN THE PERIOD.
/issued 446 AM CDT SAT MAR 19 2016/ An upper level low/trough is centered over the Northern Plains while colder air continues to push southward across West Texas and southeast New Mexico. Freezing temperatures will be possible tonight/Sunday morning across the higher terrain and parts of southeast New Mexico and the Permian Basin as skies clear out over parts of the area. As the previously mentioned upper trough moves east on Sunday, upper ridging will begin to develop over the region.
THAT HAS ACTUALLY VEERED TO THE SOUTHEAST AT THE LOWEST LEVELS AT RIW. BEHIND YESTERDAYS SFC COLD FRONT THAT HAS RECENTLY PUSHED THROUGH RKS. THIS LOW LEVEL MOISTURE SHOULD ONLY AMNT TO NO MORE THAN FLURRIES AND LOW CLOUDS THROUGH THIS EVENING. A FEW FLURRIES COULD ALSO OCCUR OVER THE HIGHEST PEAKS OF THE FAR WESTERN MTNS THROUGH EARLY THIS EVENING. MUCH OF THIS CLOUDINESS IS DUE TO ONE LAST VORT LOBE TRACKING TOWARD THE ENE ALONG THE BACK EDGE OF THE EXITING TROUGH ALIGNED WITH THE NE MOVING JET MAX. AS HIGH PRESSURE BUILDS IN FROM THE WEST. TEMPERATURE INVERSIONS WILL ESTABLISH THEMSELVES TONIGHT ACROSS THE BASINS AND VALLEYS AND WILL PERSIST IN THE FAR WEST VALLEYS THROUGH THE DAY SATURDAY WHERE TEMPS WILL REMAIN BELOW FREEZING IN THE JACKSON VALLEY WHERE FRESH DEEP SNOW COVER EXISTS.
255 AM PDT SAT MAR 19 2016 A RIDGE OF HIGH PRESSURE WILL CONTINUE TO BUILD ACROSS THE REGION THROUGH SATURDAY RESULTING IN MOSTLY CLEAR SKIES AND ABOVE NORMAL TEMPERATURES FOR THE CENTRAL CALIFORNIA INTERIOR. A RIDGE OF HIGH PRESSURE WILL REMAIN DOMINANT OVER SOUTHERN AND CENTRAL CALIFORNIA TODAY. AN UPPER LEVEL LOW CURRENTLY CENTERED NEAR 45N/150W WILL SHIFT SLOWLY EAST TODAY AND SUNDAY.
309 AM CDT SAT MAR 19 2016 OCCASIONAL LIGHT SNOW WILL PIVOT SOUTH AND SOUTHEAST THROUGH THE DAY TODAY AS THE PERSISTENT LOW PRESSURE TO THE EAST FINALLY MOVES OUT OF THE REGION. SUNDAY NIGHT WILL BRING WARMING LOWERING INTO THE LOWER LEVELS. AND THE HIGH CLOUDS DECREASING DURING THE NIGHT.
413 AM MDT SAT MAR 19 2016 BROAD UPPER TROUGH OVER THE NORTHERN GREAT PLAINS CONTINUES ITS GRIP ON OUR WEATHER THIS MORNING. STRONG CIRCULATION AROUND THIS TROUGH HAS DRIVEN ANOTHER WAVE OF MOISTURE AND COOLER AIR DOWN FROM WYOMING AND ACRS NERN COLORADO DURING THE PAST FEW HOURS. TEMPERATURES TODAY NOT MUCH WARMER THAN YESTERDAY WITH CONTINUED COLD AIR ADVECTION. LOOK FOR ONLY MID 30S/LOWER 40S ON THE PLAINS AND GENERALLY 30S IN THE HIGH COUNTRY. CLEAR/MOSTLY CLEAR SKIES AND LIGHT BREEZES WILL PREVAIL WITH A STRONG HIGH PRESSURE RIDGE BUILDING IN FROM THE WEST. CLEAR SKIES WILL ALLOW FOR STRONG RADIATIONAL COOLING TO RESULT IN ANOTHER NIGHT OF MIN TEMPS WELL BELOW THE FREEZING MARK.
Upper level flow across the region this afternoon is generally zonal with a trough off to our northwest. A wave rounding the base of this trough along with another disturbance a bit further south will move across the forecast area tonight. The upper level trough will begin to pivot southeast towards the area Saturday night. An area of rain developing associated with this trough will move in from the west Saturday night. It still looks like we could see a mix of rain and snow with this system overnight as temps fall into the lower to mid 30s.
636 AM EDT SAT MAR 19 2016 AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE AREA ON TODAY WITH HIGH PRESSURE BUILDING EAST FROM ONTARIO. THE HIGH WILL CREST OVER THE AREA ON SUNDAY WHILE LOW PRESSURE ORGANIZES ALONG THE MID- ATLANTIC COAST. SATELLITE WV LOOP SHOWED UPPER TROF SWINGING TOWARD THE REGION. DAYTIME TEMPERATURES ARE FORECAST TO HIT UPPER LOW TO MID 20S ACROSS THE NORTHERN 1/2 OF THE CWA WHILE CENTRAL AND DOWNEAST WILL SEE UPPER 20S TO LOWER 30S. INVERSION SETTING UP BY EARLY SUNDAY MORNING WILL LEAD TO TEMPERATURES HITTING THE SINGLE NUMBERS W/AREAS ACROSS THE N AND W HITTING BELOW 0F ESPECIALLY THE LOW LYING AREAS. HIGH PRESSURE WILL CROSS THE REGION EARLY SUNDAY WITH ABUNDANT SUNSHINE TO START THE DAY BEFORE HIGH CLOUDS BEGIN TO INCREASE DURING SUNDAY AFTERNOON.
WEAK LOW PRESSURE SYSTEM TRACKING ACROSS THE AREA WILL QUICKLY PULL OFF TO THE EAST TODAY. AND A SNOW SHOWER CANNOT BE RULED OUT OVER THE HIGHEST TERRAIN BEFORE THE PRECIP ENDS. TEMPERATURES SHOULD STAY ABOVE FREEZING ACROSS ALL BUT THE HIGHEST TERRAIN.
TONIGHT THROUGH SATURDAY NIGHT A COLD FRONT WILL PUSH THROUGH ARKANSAS FROM THE NORTH THIS EVENING. WITH HIGH PRESSURE BUILDING INTO THE AREA FROM THE PLAINS. THE HIGH WILL BE OVERHEAD SATURDAY NIGHT. AT OR BELOW FREEZING TEMPERATURES APPEAR LIKELY DURING THIS TIME FRAME.
400 AM EDT SAT MAR 19 2016 CANADIAN HIGH PRESSURE WILL SLIDE ACROSS THE NORTHERN GREAT LAKES TODAY WHILE WEAK LOW PRESSURE OVER THE MIDWEST MOVES SLOWLY ACROSS THE OHIO VALLEY BY SUNDAY.
446 AM CDT SAT MAR 19 2016 An upper level low/trough is centered over the Northern Plains while colder air continues to push southward across West Texas and southeast New Mexico. Freezing temperatures will be possible tonight/Sunday morning across the higher terrain and parts of southeast New Mexico and the Permian Basin as skies clear out over parts of the area. As the previously mentioned upper trough moves east on Sunday, upper ridging will begin to develop over the region.
A RIDGE OF HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH THE WEEKEND.