Aikyam-Lab/Synoptic-Bench huggingface dataset:
358 PM EST FRI FEB 6 2015 A WEAK MID LEVEL TROUGH HAS BEEN PROVIDING SOME THICKER HIGH CLOUDS ACROSS THE AREA TODAY. TONIGHT WILL BE THE FIRST OF A COUPLE OF NIGHTS WITH GOOD RIDGE/VALLEY SPLITS. THE LOW DEW POINTS ACROSS THE AREA PRESENTLY SHOULD SUPPORT THE COLDER VALLEYS INTO THE TEENS TONIGHT WITH THE RIDGES STAYING IN THE 30S. CLEAR SKIES WILL LAST INTO SATURDAY NIGHT WITH LARGE RIDGE/VALLEY TEMPERATURES SPREADS DEVELOPING ONCE MORE. WITH READINGS INTO THE LOWER 30S. RIDGES MAY STAY IN THE 40S OVERNIGHT. BUT GIVEN THE LOW LEVEL DRY AIR.
EXCEPT FOR SOME THIN HIGH CLOUDS OVERHEAD SPILLING OVER A LARGE RIDGE OVER THE SWRN CONUS. WEAK ONSHORE FLOW EXPECTED WITH AND INVERTED TROUGH OFF THE NE FL AND SE GA COAST. BUILDING RIDGE ALOFT AND SUBSIDENCE WILL HELP BOOST HIGHS TO THE MID AND UPPER 60S.
1246 PM EST FRI FEB 6 2015 HIGH PRESSURE WILL CROSS THE REGION TODAY. A COLD FRONT WILL CROSS THE REGION TONIGHT. HIGH PRESSURE BUILDS ACROSS THE REGION SATURDAY.
UPPER RIDGING WILL CONTINUE TO SPILL ACROSS THE INTERMOUNTAIN WEST ONTO THE HIGH PLAINS TODAY. SPRING-LIKE TEMPERATURES WILL THUS BE IN THE OFFING AS ALL LOCALES MAKE IT INTO THE LOW-MID 70S THIS AFTERNOON. MAINTAINING LEE TROUGHING/BREEZY CONDITIONS ACROSS THE REGION ALONG WITH INTRODUCING A FEW CIRRUS. MUCH WARMER AIR IN PLACE ALOFT WILL KEEP OVERNIGHT LOWS MILD. RIDGING WILL BUILD INTO THE REGION THIS WEEKEND BEFORE A LOW IS SPAWNED FROM THE MAIN FLOW AND CUTS OFF ACROSS THE SOUTHWESTERN USA. THIS LOW WILL RETROGRADE BACK TOWARD BAJA CALIFORNIA THROUGH THE END OF THE WEEK AS HIGH AMPLITUDE RIDGING PERSISTS FROM TEXAS CLEAN UP TO SIBERIA.
128 PM CST FRI FEB 6 2015 A VERY DRY AIRMASS WAS IN PLACE OVER THE TN VALLEY THIS AFTERNOON BENEATH A RIDGE OF HIGH PRESSURE WHICH EXTENDED FROM THE EASTERN OH VALLEY THROUGH THE WESTERN GULF COASTAL AREA.
306 PM CST Fri Feb 6 2015 Latest water vapor imagery showing upper trough along the west coast helping to push high plains ridging eastward. Therefore expect the warmest temps again (in the low/mid 70s) to occur along and south of I 70 with cooler readings to the north in the 60s.
Pacific moisture aloft will continue to move over an upper level ridge axis and across Montana. Also, below freezing temperatures continue in the Milk River Valley although models continue to insist that it will be pushed out by strong Chinook winds over the plains. MLV /ISSUED 335 AM MST Fri Feb 6 2015/ Strong/energetic SW flow aloft persists through this weekend as a series of weather disturbances eject out of a deep trough in the eastern Pacific and move NE across the region.
1210 PM CST FRI FEB 6 2015 THE LOW CLOUDS HAVE MOVED EAST TODAY BUT HAVE SEEN SOME BREAKS AND THINNING.
A DEEP TROUGH EXTENDS OFF THE EASTERN SEABOARD. THIS TROUGH WILL DRIFT EASTWARD AS WEAK RIDGING SETS UP OVER THE SOUTHEAST UNITED STATES. A BROAD AREA OF HIGH PRESSURE EXTENDS WEST SOUTHWEST FROM THE CAROLINAS TO LOUISIANA. PLEASANT AND DRY CONDITIONS ASSOCIATED WITH THIS HIGH PRESSURE AS WELL AS NORTHEAST WINDS WILL CONTINUE FOR THE NEXT SEVERAL DAYS. TEMPERATURES HAVE BEEN A LITTLE BELOW NORMAL TODAY BUT WILL WARM BACK UP TO SEASONAL AVERAGES ON SATURDAY AND THROUGH THE REMAINDER OF THE WEEKEND AS WEAK RIDGING SETS UP OVER THE REGION. THE HIGH PRESSURE LOCATED NORTH OF THE AREA WILL SHIFT SOUTHEAST AND WILL BE LOCATED OFF THE EAST COAST OF GA/FL BY SATURDAY NIGHT PRODUCING LIGHTER EAST NORTHEAST WINDS AND CONTINUED FAIR WEATHER.
THE RESULT OF A TIGHTENING PRESSURE GRADIENT BETWEEN THE HIGH OVER THE SOUTHEAST UNITED STATES AND A LOW OVER THE PLAINS STATES THAT WILL USHER IN HIGHER LOW LEVEL MOISTURE.
147 PM MST FRI FEB 6 2015 A PACIFIC SYSTEM WILL FLATTEN THE RIDGE OVER THE CENTRAL ROCKIES THIS AFTERNOON AND TONIGHT. TEMPERATURES UNDER THIS RIDGE HAVE CLIMBED INTO THE 60S AND LOWER 70S ACROSS NORTHEAST COLORADO. WINDY CONDITIONS AND MILD AIRMASS WILL LEAD TO A WARM NIGHT WHERE MANY LOCATIONS WILL STAY ABOVE FREEZING.
Nearly ideal radiational cooling conditions tonight will allow temps to dip at or just below the freezing mark across most inland areas.
TODAY THROUGH SATURDAY NIGHT WATER VAPOR IMAGERY SHOWS A BROAD UPPER RIDGE OVER THE WESTERN CONUS. UPPER RIDGE SHIFTS EASTWARD TODAY. THE UPPER RIDGE BRIEFLY FLATTENS ON SATURDAY AS A WEAK WAVE MOVES THROUGH. BUT WHETHER THE HIGH WIND CRITERIA WINDS NUDGE FARTHER NORTH WILL BE SOMETHING TO WATCH.
AT THE SFC A LEE TROUGH WILL RESIDE EAST OF THE MTNS WITH DOWNSLOPE LOW LVL FLOW ACROSS NERN CO. HOWEVER WILL LIKELY SEE SOME GUSTS IN THE 60-70 MPH RANGE IN THE HIGHER FOOTHILLS AND OVER THE MTNS.
CIRRUS RIDING UP AND OVER THE NORTHERN EXTENT OF CENTRAL MEXICO UPPER RIDGING. LIGHT SURFACE WINDS VEERING MORE ONSHORE THIS AFTERNOON MAY ALSO AID IN WARMING THE LOWER LEVELS UP ENOUGH TO PROMOTE BETTER MIXING OUT OF THIS STUBBORN DECK. ALL THE CLOUD COVER THIS MORNING WILL HAMPER THE RISE OF TEMPERATURES BUT CERTAINLY WARMER THAN YESTERDAY WITH LIGHT SOUTHERLY FLOW DEVELOPING THIS AFTERNOON.
Given the sunshine later in the day and a strong southerly flow, temperatures will be much warmer than in recent days. Readings will range from the middle to upper 30s over the deep snow pack along/north of I-74 to the lower 40s further southwest where little or no snow is present. As high pressure continues to shift to the southeast this morning, southerly winds will return, bringing in warmer weather. Models in good agreement with dry and warmer forecast today. High pressure remains in control for tonight and tomorrow ahead of the next wave moving into the Midwest.
1128 AM CST Fri Feb 6 2015 Rising temperatures are the main story today and Saturday with a broad upper ridge building into the area. Models have really struggled to adequately resolve mixing heights in similar ridging patterns this season, and thus believe model guidance continues to be several degrees too cool with surface temperatures. An even warmer surge of 925 hPa temps on Saturday should allow temperatures to rise about 10 degrees warmer than Friday's readings with upper 60s/near 70 south of the Missouri River and mid/lower 50s to the north. Southerly winds gliding over the snow and dewpoints rising above freezing will likely favor areas of advection fog both nights.
THIS HAS KEPT TEMPS A LITTLE COOLER THAN EXPECTED ACRS SE TX WITH TEMPERATURES IN THE LOWER/MIDDLE 50S AS OF 3 PM. THE AREA REMAINS BETWEEN A TROF OVER THE E COAST AND RIDGING ACRS THE WRN STATES. SLY WINDS WILL DEVELOP WITH THE HIGH CNTRD EAST OF THE REGION.
Northwest flow aloft has resulted in a lee side trough and downsloping winds across the central plains today. Snow in these areas will likely not fully melt, and temperatures will be much cooler as a result. Over the past month the models have been under estimating mixing heights in these patterns with southwest surface winds and a strong thermal ridge overhead. Since the model forecasts have been much cooler with the temperatures they quickly develop fog shortly after sunset. I do not believe this will be the case due to warmer temperatures today, but by early tomorrow morning patchy fog could be possible over these cooler snow covered locations. With a weak trof moving through the zonal flow across the high plains, comes a thermal ridge in the mid levels as well as enhanced mixing over the state.
309 PM EST FRI FEB 6 2015 A WEAK MID LEVEL TROUGH HAS BEEN PROVIDING SOME THICKER HIGH CLOUDS ACROSS THE AREA TODAY. TONIGHT WILL BE THE FIRST OF A COUPLE OF NIGHTS WITH GOOD RIDGE/VALLEY SPLITS. THE LOW DEWPOINTS ACROSS THE AREA PRESENTLY SHOULD SUPPORT THE COLDER VALLEYS INTO THE TEENS TONIGHT WITH THE RIDGES STAYING IN THE 30S. CLEAR SKIES WILL LAST INTO SATURDAY NIGHT WITH LARGE RIDGE/VALLEY TEMPERATURES SPREADS DEVELOPING ONCE MORE. WITH READINGS INTO THE LOWER 30S. RIDGES MAY STAY IN THE 40S OVERNIGHT. BUT GIVEN THE LOW LEVEL DRY AIR.
AN UPPER LEVEL RIDGE WILL CONTINUE OVER THE ROCKIES TODAY INTO TONIGHT WITH AN UPPER LEVEL LONG WAVE TROUGH POSITIONED ABOVE EASTERN CANADA. LEE TROUGHING WILL CONTINUE ACROSS EASTERN COLORADO THROUGH TOMORROW LEADING TO SOUTHWEST TO WEST WINDS. THE UPPER RIDGE OVER THE CENTRAL U.
Satellite imagery shows that this low cloud field is quickly breaking up. This low cloud field should quickly break up by late morning, with sunny skies expected this afternoon. The flow aloft will back somewhat this afternoon and should promote a much drier column, resulting in fewer clouds and much warmer temperatures across West Central TX.
LATEST TEMP TRENDS SUGGEST HIGH TEMPS MAY A DEGREE OR SO WARMER IN SOME SPOTS THAN PREVIOUSLY FORECAST, AND WILL UPDATE PRODUCT SUITE TO REFLECT CURRENT GRID ADJUSTMENTS.
TEMPS WILL WARM FOR THE WEEKEND INTO THE UPPER 60S/LOWER 70S AHEAD OF WEAK COLD FRONT. NW FLOW ALOFT WILL TRANSITION TO NEAR-ZONAL FLOW AS THE UPPER RIDGE MOVES EWD AND ANOTHER LARGE-SCALE UPPER TROF MOVES DOWN THE PLAINS THROUGH MIDWEEK.
Warmer this Weekend. A steady southerly wind will persist tonight which will overnight lows above freezing at most locations. Even warmer temperatures are in store for Saturday with support from additional thickness rises and a 850 MB thermal ridge that will transition across the Ozarks region.
330 PM EST FRI FEB 6 2015 WARMER TEMPERATURES WILL SLOWLY ARRIVE OVER THE NEXT COUPLE OF DAYS AS HIGH PRESSURE SHIFTS EAST OF THE REGION. HIGHS ON SATURDAY ARE EXPECTED TO CLIMB ABOVE FREEZING. LOW LEVEL THERMAL/THETA-E RIDGE WILL CONTINUE TO FOLD EASTWARD WITH 850MB TEMPS PUSHING 10C BY TOMORROW. ALWAYS SOME CONCERN FOR FOG DEVELOPMENT WHEN ABOVE-FREEZING SURFACE TEMPS AND DEWPOINTS ARE ADVECTED OVER DEEP SNOWPACK BUT CONFIDENCE IN THIS CASE REMAINS LOW. DEWPOINTS DON'T CLIMB ABOVE FREEZING UNTIL TOMORROW AFTERNOON AND HAVE BEEN SLOW TO RISE BOTH HERE AND UPSTREAM TODAY. TEMPS WILL PROBABLY STILL BE RIGHT AT OR JUST BELOW FREEZING EARLY TOMORROW MORNING SO IF FREEZING FOG DOES DEVELOP IT COULD LEAD TO A FEW SLICK SPOTS ON THE ROADS.
THIS WAS MUCH WARMER THAN THE GFS/NAM BUFR SOUNDINGS AT DSM. DEWPOINTS IN THESE AREAS ARE IN THE LOW TO MID 30S SO EXPECT FOG OVER THE SNOW COVER INTO SAT MORNING TO SOME EXTENT. SURFACE TEMPS WILL LIKELY BE JUST SHY OF FREEZING THROUGH EARLY MORNING HOURS SO HAVE LIGHT FREEZING RAIN FOR PRECIP TYPE. BUT MORE LIKELY PRECIP TYPE THROUGH THIS EVENT WOULD BE LIGHT FREEZING RAIN.
BUFKIT GFS AND NAM SOUNDINGS SHOW MUCH OF THE HIGHER RH VALUES WILL STAY ANCHORED NEAR THE SFC AS DRYING OCCURS ABOVE THE H9 LEVEL.
DECENT MIXING WILL KEEP MOST LOW TEMPERATURES ABOVE FREEZING. WE EXPECT AN AREAL EXPANSION OF THE HIGH WINDS. WHEATLAND AND CHEYENNE WHILE MAINTAINING THE HIGH WIND WARNING FOR OUR TYPICALLY WIND PRONE LOCATIONS.
INCREASED THICKNESSES AND WEAK WARM ADVECTION WILL RESULT IN TEMPERATURES BACK IN THE LOWER 50S ACROSS THE NORTH.
249 PM CST FRI FEB 6 2015 AT H5 UPPER RIDGE DOMINATES THE CENTRAL CONUS WITH TROUGHS OFF OF BOTH COASTS. H85 T/S IN THE LOWER TEENS WILL PROMOTE WIDESPREAD HIGHS IN THE 60S. SLIGHTLY COOLER OVER SNOW FIELDS.
HIGH PRESSURE IN CONTROL TODAY FOR MOSTLY SUNNY SKIES AS BATCHES OF HIGH CLOUDS DRIFT BY. NEAR RECORD BREAKING HIGH TEMPERATURES ARE EXPECTED TODAY ACROSS EASTERN UTAH AND WESTERN COLORADO AS THE UPPER LEVEL RIDGE AXIS PASSES THROUGH WESTERN COLORADO THIS MORNING. WHICH WILL LIKELY FIRE OFF SOME SHOWERS ACROSS THE HIGHER TERRAIN OF THESE AREAS.
255 PM EST FRI FEB 6 2015 HIGH PRESSURE WILL MOVE SOUTH OF THE STATE INTO TONIGHT AS A COLD FRONT MOVES SOUTHEAST THROUGH NEW YORK STATE. THIS COLD FRONT WILL PUSH INTO THE NORTH ON SATURDAY BEFORE STALLING OUT OVER THE NORTHERN MOUNTAINS.
1213 PM EST FRI FEB 6 2015 HIGH PRESSURE WILL PREVAIL THROUGH THE WEEKEND.
THE LATEST WATER VAPOR IMAGERY SHOWS BROAD RIDGING ACROSS THE NORTHERN ROCKIES WITH A WEST TO NORTHWESTERLY FLOW INTO NORTH DAKOTA. IN THE LOW LEVELS. WILL CANCEL THE FREEZING RAIN ADVISORY AS MAIN LIFT AND PRECIPITATION CONTINUE TO SHIFT FARTHER EAST. SOME FREEZING RAIN MAY RETURN BUT AREAL COVERAGE AT THIS TIME LOOKS MINIMAL. THREAT FOR FREEZING RAIN IN THIS AREA CONTINUES THROUGH THE MORNING. WHILE TO THE NORTH FREEZING RAIN/SNOW CHANCES REMAIN.
BROAD 1030 MB HIGH PRESSURE OVERHEAD WILL SLOWLY WEAKEN AND SHIFT EAST. OVERNIGHT LOW TEMPERATURES IN THE LOWER 50S WILL BOTTOM OUT ON TOP OF SIMILAR DEW POINTS AND. AFTERNOON HIGH TEMPS WILL RECOVER INTO THE LOWER TO MID 70S WITH LIGHT SOUTHEAST WINDS.
For the remainder of the short term period, high pressure over the Mississippi Valley will drift across the region today and off to the east this afternoon. We'll see another gradient of temperatures today with highs in the lower 40s in the north with mid-40s in the central sections and mid-upper 40s across the south. Southerly winds will keep temperatures warmer tonight with readings only dropping into the lower 30s. Highs should warm into the lower-middle 50s across the north with mid-upper 50s across the south.
126 PM PST FRI FEB 6 2015 A LOW PRESSURE SYSTEM MOVING INLAND TO THE NORTH WILL CREATE GUSTY ONSHORE WINDS IN THE MOUNTAINS AND DESERTS.
1257 PM EST FRI FEB 6 2015 LOW PRESSURE OVER ONTARIO WILL SLIDE EAST INTO QUEBEC TODAY WITH THE ASSOCIATED COLD FRONT STALLING OVER THE GREAT LAKES. THIS FRONT WILL GRADUALLY LIFT NORTH AS A WARM FRONT ON SATURDAY.
1152 AM CST FRI FEB 6 2015 LOW PRESSURE IN WESTERN ND PULLING LIGHT SOUTHERLY WINDS INTO THE CWA EARLY THIS MORNING. LOW LEVEL WARM AIR ADVECTION (850-920 MB) WILL BRING WARMER TEMPERATURES INTO THE AREA. WITH GULF MOISTURE SHUT DOWN DUE TO HIGH PRESSURE ALONG THE GULF COAST DEW POINTS WILL REMAIN ON THE LOW SIDE. WITH TEMPERATURES DROPPING BACK BELOW FREEZING THIS IS NOT FAVORABLE FOR DENSE FOG DEVELOPMENT. WARM FRONT SHOWN TO LIFT NORTH OF THE CWA DURING DAY ALTHOUGH LOWER CONFIDENCE DUE EXISTING DEEP SNOW PACK. WITH POTENTIAL FOR MORE WIDESPREAD AREAS OF FOG/ POSSIBLY DENSE / SATURDAY NIGHT AFTER COUPLE OF DAYS OF WARMING THE SNOWPACK WITH MORE MELT LIKELY ON SATURDAY WITH SURFACE DEWPTS SHOWN TO CLIMB NEAR TO ABOVE FREEZING.
253 PM MST Fri Feb 6 2015 Broad upper level trough will remain over Montana with periods of Pacific moisture moving over the forecast area through the weekend. The warm temperatures will keep snow levels relatively high so little to no impacts are expected from precipitation except in the highest terrain.
A VERY DRY AIRMASS WAS IN PLACE OVER THE TN VALLEY THIS AFTERNOON BENEATH A RIDGE OF HIGH PRESSURE WHICH EXTENDED FROM THE EASTERN OH VALLEY THROUGH THE WESTERN GULF COASTAL AREA.
348 PM EST FRI FEB 6 2015 HIGH PRESSURE WILL BUILD INTO THE REGION THROUGH THE WEEKEND.
/ISSUED 328 AM CST FRI FEB 6 2015/ THE MAIN CONCERNS ARE MUCH WARMER WEATHER AND FIRE WEATHER CONCERNS THROUGH THE WEEKEND. TODAY WILL BE A MUCH WARMER DAY ACROSS THE ENTIRE AREA DUE TO INCREASING SOUTHWEST WINDS AND MOSTLY SUNNY SKIES. SATURDAY WILL BE EVEN WARMER WITH NEAR RECORD WARMTH.
AUS SHOULD BE THE FIRST TO SCATTER OUT AT THE LOW LEVELS. HIGHS WILL RANGE FROM THE LOWER 60S ACROSS MUCH OF THE AREA WITH MID 60S ACROSS THE RIO GRANDE PLAINS.
AN UPR RIDGE WL BE OVR THE AREA TODAY AND TONIGHT.
A LARGE UPPER TROUGH IS OVER THE EASTERN CONUS WITH THE CENTRAL PLAINS UNDER UPPER LEVEL NORTHWEST FLOW WITH RIDGING OVER THE ROCKIES. MID-HIGH CLOUDS AND STEADY WINDS HAVE HELPED TO KEEP TEMPERATURES STEADY AND SLIGHTLY WARMER EARLY THIS MORNING. HIGHS WILL BE HELPED BY THE UPPER LEVEL RIDGING.
130 PM EST FRI FEB 6 2015 ARCTIC HIGH PRESSURE WILL BUILD INTO THE CAROLINAS TODAY BEFORE MOVING TO OUR SOUTH THIS WEEKEND.
WINDS RANGE BETWEEN 10 AND 20 MPH WITH NORTH TO NORTHEAST IN THE LOWER KEYS. AN EXTENSIVE AREA OF HIGH PRESSURE IS CENTERED OVER THE ENTIRE SOUTHEAST UNITED STATES. WITH A RIDGE PRESSING DOWN THE SUNSHINE STATE.
315 PM CST FRI FEB 6 2015 HIGH PRESSURE IN MANITOBA REACHED OVER THE NORTHERN EDGE OF THE FORECAST AREA AT 20Z. CLOUD COVER WAS TRAPPED UNDERNEATH THIS HIGH PRESSURE.
932 AM PST FRI FEB 6 2015 COOLER TODAY WITH CONTINUED ABOVE NORMAL HIGH TEMPERATURES. A LOW PRESSURE SYSTEM MOVING INLAND TO THE NORTH WILL CREATE GUSTY ONSHORE WINDS IN THE MOUNTAINS AND DESERTS.
OTHERWISE EXPECT DRY AND MILD CONDITIONS THROUGH THE COMING WEEKEND AS HIGH PRESSURE BUILDS IN.
AS IT DEPARTS THE SFC PRESSURE GRADIENT ACROSS THE NORTHLAND INCREASES FOR WEDNESDAY AHEAD OF A STRONG ARCTIC HIGH PRESSURE MOVING INTO THE NORTHERN PLAINS. AS MID-LEVEL TROUGH MOVES OUT THERE WILL BE DRYING ALOFT WHICH MAY LEAD TO AREAS OF FREEZING DRIZZLE AS BEING OBSERVED AT GRAND FORKS LATE THIS AFTERNOON. ADDED A GENEROUS AMOUNT OF PATCHY FREEZING DRIZZLE TO THE WX GRID. A FEW FLURRIES ARE ALSO POSSIBLE AS STRONGER H5 TROUGH DIVES INTO THE UPPER MIDWEST.
A COLD FRONT WILL PUSH THROUGH THE REGION FROM THE NORTH ON WEDNESDAY. THE LOW CLOUDS WILL BE BETWEEN 5000 AND 6000 FEET.
AS HIGH PRESSURE SLOWLY SLIDES EAST THROUGH TONIGHT AND SOUTHERLY FLOW INCREASES TOWARDS DAWN. TONIGHTS WEATHER WILL LIKELY FEATURE A FAIRLY WELL DEFINED RIDGE VALLEY TEMPERATURE SPLIT. THE TEMPERATURE FORECAST FOR TONIGHT WILL FEATURE THE RIDGE VALLEY SPLIT. WITH THE OVERALL NUMBERS SKEWED SLIGHTLY TOWARD THE SLIGHTLY COOLER METMOS DATA. ALL BUT OUR FAR NORTHERN COUNTIES SHOULD SEE THE MERCURY CLIMB INTO THE LOW TO MID 50S BY TOMORROW AFTERNOON.
LOW PRESSURE OFF THE NORTH CAROLINA COAST WILL CONTINUE TO MOVE NORTHEAST AWAY FROM THE AREA. COOLER AND DRIER AIR WILL ADVECT INTO OUR AREA AS HIGH PRESSURE BUILDS INTO THE REGION OVERNIGHT.
646 PM EST TUE FEB 10 2015 HIGH PRESSURE OVER THE WESTERN LAKES WILL MOVE ACROSS THE GREAT LAKES TODAY.
1030 PM EST TUE FEB 10 2015 A PRESSURE RIDGE APPROACHING FROM THE WEST WILL EXTEND THROUGH THE FORECAST AREA TONIGHT AND WEDNESDAY.
318 PM PST Tue Feb 10 2015 Dry and warmer conditions return for the remainder of the week. High pressure will build over the region the remainder of the week for dry and mild weather. Amplification of the W Coast ridge is forecast in the short term as low pressure digs into the Great Basin and retrogrades towards the Baja Peninsula. So more atmospheric blocking along the W coast will bring another period of dry wx to Norcal. Abundant high clouds are progressively invading the Norcal sky from NW-SE as the ridge rebuilds resulting in partly to mostly cloudy conditions. Thinning of the high clouds is expected overnite leading to a chance of some valley (radiational) fog. As the ridge strengthens for the rest of the week.
634 PM EST TUE FEB 10 2015 TEMPERATURES WILL MODERATE WEDNESDAY AHEAD OF AN ARCTIC COLD FRONT. SUBSIDENCE ASSOCIATED WITH RIDGING BUILDING IN HAS CLEARED OUT THE CLOUDS ELSEWHERE. THE NEXT COLD FRONT WILL MAKE ITS APPROACH LATE WEDNESDAY.
THIS EVENING THROUGH WEDNESDAY NIGHT UPPER LEVEL ANALYSIS HAS TROF AXIS SLIDING THROUGH THE NORTHERN PLAINS AND CENTRAL ROCKIES. WITH RIDGE BUILDING ACROSS THE WEST COAST. LOW PRESSURE IS MOVING INTO WESTERN MINNESOTA WITH COLD FRONT SAGGING THROUGH MUCH OF SOUTH DAKOTA. COLD FRONT WILL PUSH INTO NEBRASKA WITH GUSTY NORTHWEST WINDS CONTINUING INTO THE EARLY EVENING HOURS. AS CANADIAN HIGH PRESSURE SETTLES INTO THE AREA. UPPER TROF DEEPENS AND SHIFTS EAST AS RIDGE AMPLIFIES ACROSS THE WESTERN CONUS.
CLOUD COVER WILL BE INCREASING FROM NORTH TO SOUTH BEGINNING AROUND SUNRISE AS A COLD FRONT STARTS TO MOVE THROUGH THE AREA.
500 PM MST TUE FEB 10 2015 RADAR ECHOES THIS AFTERNOON LOOKING MORE LIKE THE END OF APRIL THAN EARLY FEBRUARY! INSTABILITY TODAY HAS HELPED TO FIRE OFF SOME SHOWERS OVER THE HIGHER TERRAIN OF EAST-CENTRAL UTAH AND WEST- CENTRAL COLORADO. THE SNOW LEVEL HAS HUNG AROUND 7500 FEET TODAY WITH TEMPERATURES ABOVE FREEZING AT MANY LOCATIONS THAT ARE REPORTING SNOW. A WEAK CLOSED LOW AT MID LEVELS WILL DEVELOP EARLY WEDNESDAY MORNING AND BRING SUB- ADVISORY SNOW AMOUNTS TO AREAS MAINLY EAST OF LAKE CITY FROM ABOUT MIDNIGHT TONIGHT THROUGH WEDNESDAY EVENING. THE CENTER OF THE LOW DROPS SOUTH INTO NEW MEXICO DURING THE DAY WEDNESDAY.
LAGGING SW PORTION OF THE THE H5 TROF THAT'LL BE MOVING THRU THE NORTHERN PLAINS AND MIDWEST WILL CUTOFF AND RETROGRADE BACK UNDER THE WESTERN RIDGE TOWARD BAJA LATER IN THE WEEK AND EARLY WEEKEND.
Temperatures will be slightly warmer than last night with lows in the low to mid 30s.
603 PM EST TUE FEB 10 2015 CANADIAN HIGH PRESSURE WILL BUILD ACROSS THE REGION THROUGH WEDNESDAY.
VFR CONDITIONS ARE EXPECTED TO PREVAIL THROUGH THE VALID PERIOD WITH SOME MID AND HIGH LEVEL CLOUDS DEVELOPING DURING THE PERIOD AS A COLD FRONT MOVES ACROSS THE REGION. A COLD FRONT WILL ALSO MOVE ACROSS THE AREA WEDNESDAY.
WATER VAPOR IMAGERY DEPICTS A DEPARTING LOW OFF THE CAROLINA COASTLINE WITH A NARROW RIDGE POSITION THROUGH THE OH AND LWR MS VALLEYS. UPPER TROFS SWINGING THRU THE NORTHERN PLAINS AND UPPER MS VALLEY SIGNAL THE ENTRANCE OF THE FIRST OF THESE ARCTIC AIRMASSES.
READINGS AS OF 8PM ARE IN THE LOW TO MID 60S ACROSS THE REGION. ALTHOUGH SLIGHTLY COOLER THAN THIS TIME LAST NIGHT. THIS MOISTURE IN COMBINATION WITH THE COOLER TEMPERATURES SHOULD ALLOW FOR FOG DEVELOPMENT FOR THE COASTAL PLAINS TOWARDS THE I-35 CORRIDOR WEDNESDAY MORNING. BUT MORE CLOUDS ARE EXPECTED THROUGH LATE WEDNESDAY IN ASSOCIATION WITH A COLD FRONT THAT WILL MOVE THROUGH OVERNIGHT. A COLD FRONT WILL MOVE THROUGH THE AREA JUST BEYOND THE CURRENT TAF PERIOD.
/ISSUED 340 PM CST TUE FEB 10 2015/ A COLD FRONT WILL MOVE THROUGH OKLAHOMA AND NORTH TEXAS TOMORROW.
652 PM EST TUE FEB 10 2015 AVIATION LOW PRESSURE MOVING EAST ACROSS LAKE SUPERIOR ON WEDNESDAY WILL DRAG A COLD FRONT THROUGH LOWER MICHIGAN IN THE AFTERNOON.
WEDNESDAY HIGH PRESSURE TO THE NORTH WILL BECOME CENTERED OVER EXTREME NORTHEAST MONTANA. TEMPERATURE WILL REMAIN COOL AS ARCTIC HIGH PRESSURE DOMINATES. THE LATEST GUIDANCE CONTINUES TO HAVE A RELATIVELY HIGH AMPLITUDE RIDGE ACROSS THE WESTERN U. THAT EXTENDS NORTH INTO BRITISH COLUMBIA FOR WEDNESDAY NIGHT WHILE A TROUGH DIGS INTO THE GREAT LAKES REGION.
STRONG HIGH PRESSURE ALOFT WILL DEVELOP ACROSS THE GREAT BASIN STARTING WEDNESDAY.
High pressure will dominate the local weather tonight with dry conditions and overnight lows ranging from the mid 30s inland to near 40 along the coast.
AT THE SURFACE, A RIDGE STRETCHES FROM THE GREAT LAKES REGION ACROSS THE MS VALLEY TO THE NORTH GULF COAST. ALOFT, RIDGING IS ALSO OCCURRING ACROSS THE NW GULF AND ADJACENT AREAS. A FEW MORE CLOUDS MAY BE NOTED BY WED AFTERNOON INTO THU MORNING AREA WIDE AS THE MID TO UPPER RIDGE SHIFTS EAST AND AN UPPER DISTURBANCE MOVES CLOSER. THE SHORT WAVE AND AN ASSOCIATED COLD FRONT WILL MOVE ACROSS THE REGION LATE WED INTO EARLY THU.
513 PM CST Tue Feb 10 2015 Fair conditions dominating this afternoon all in advance of cold front that will pass across the region during the overnight hrs tonight. latest ACARS soundings from MCI only showing effective mixing up through the lowest 2 kft feet of the atmosphere. expect mostly clear skies with weakening winds as the frontal trough approaches. with fcst soundings more than suggestive that low stratus will take up shop across the lower Missouri Vly during the early morning hrs as cold air advection commences. have sided with the cooler MET guidance for temp trends through the period.
This will bring another cold front south into north central and northeast Kansas after midnight with the front moving through east central Kansas around sunrise Wednesday. Winds will be gusty from the north behind the cold front and with good cold air advection through the day on Wednesday. Lows tonight will drop off into the lower to middle 30s.
UPPER RIDGE OVER THE REGION TONIGHT AND WEDNESDAY. SATELLITE AND MODEL DATA SHOW A FAIR AMOUNT OF HIGH CLOUDS MOVING THROUGH THE RIDGE SO EXPECTING PARTLY CLOUDY SKIES.
A COLD FRONT HAS PASSED THROUGH VERNON AND WILL CONTINUE MAKING SLOW PROGRESS TO THE SOUTHEAST OVERNIGHT. THE COLD FRONT WILL REACH METROPLEX TAF SITES BY MIDDAY. WITH THE COLD FRONT REACHING CENTRAL TEXAS AIRPORTS NEAR 00Z (6 PM CST WEDNESDAY). ALTHOUGH THE LOW LEVELS WILL SATURATE TONIGHT. WE HAVE LOWERED THE POTENTIAL FOR A STRATUS SURGE AS THE LOW LEVELS REMAIN MIXED. THIS FRONT WILL ALSO PULL COOLER AIR.
SOME FREEZING DRIZZLE STILL EXPECTED MAINLY SOUTHWEST OF I-94 THIS EVENING. MAY ALSO HAVE TO EXTEND THE ADVISORY A COUPLE/FEW HOURS AS THERE IS SOME INDICATION THAT THERE MAY STILL BE SOME LINGERING FREEZING DRIZZLE AFTER MIDNIGHT.
Also have added a mention of freezing drizzle to the areas with a mention of snow flurries late tonight and Wednesday morning. Finally added patchy freezing fog to the Helena and Bozeman valleys for late tonight.