Aikyam-Lab/Synoptic-Bench huggingface dataset:
130 AM EDT MON MAR 21 2016 HIGH PRESSURE WILL ENSURE COOL AND QUIET WEATHER THROUGH MONDAY. MORE UNSETTLED PATTERN WILL DEVELOP BY THE MIDDLE OF THE WEEK WITH WARMER TEMPERATURES AND RAIN RETURNING. WITH A GRADUAL INCREASE IN MID-HIGH CLOUDS POSSIBLE LATER TONIGHT-MONDAY AS MOISTURE SPILLS OVERTOP APPROACHING UPPER RIDGE. ONLY MINOR TWEAKS TO TEMPS OTHERWISE WITH MONDAY SEVERAL DEGREES WARMER THAN TODAY. A FEW LIGHT SHOWERS PSBL NRN PORTION OF CWA IN WAA REGIME WITH FORCING ENHANCED BY LEAD SHRTWV, BUT BIG STORY TUE SHOULD BE MUCH WARMER TEMPS WITH HIGHS EXPECTED IN THE U50S/L60S.
312 AM CDT MON MAR 21 2016 THE MAIN CONCERNS ARE WIND AND THE COMBINATION OF LOWER DAYTIME HUMIDITIES AND WARMER TEMPERATURES WHICH WILL AFFECT GRASSLAND FIRE WEATHER CONDITIONS THE NEXT FEW DAYS. EVEN WARMER TEMPERATURES ARE EXPECTED ON TUESDAY WITH A RECORD HIGH POSSIBLE AT RUSSELL. WHILE THE LOWEST DAYTIME HUMIDITIES WILL BE ACROSS CENTRAL KANSAS. THE DEEPENING SURFACE CYCLONE ACROSS THE CENTRAL PLAINS WILL KEEP SOUTH WINDS STOUT ON TUESDAY NIGHT.
ALOFT: THE FLOW WAS MODERATELY AMPLIFIED OVER THE CONUS WITH A TROF OVER THE ERN USA. A RIDGE OVER THE ROCKIES. AND A TROF BEGINNING TO MOVING ONSHORE IN THE W. DEAMPLIFICATION WILL OCCUR TODAY WITH THE RIDGE WAVELENGTH BROADENING AND OVERTAKING THE PLAINS TONIGHT. THE BASE OF THE E PAC TROF WILL MOVE INTO THE WRN USA TONIGHT SETTING THE STAGE FOR SOME POTENTIALLY THREATENING WX AND SOME MUCH-NEEDED PRECIP HERE WED. LOW PRES WAS OVER MT WITH A COOL FRONT SW TO NV AND A WARM FRONT SE INTO THE DAKOTAS. THE HIGH WILL GRADUALLY SLIDE E ALONG THE GULF COAST THRU TONIGHT. WITH THE WARM FRONT EXTENDING E INTO IA/IL. PROBABLY 20F WARMER THAN YESTERDAY.
424 AM EDT MON MAR 21 2016 A RIDGE OF HIGH PRESSURE WILL PASS ACROSS THE REGION TODAY. SOUTHERLY WINDS ON THE BACK SIDE OF THIS HIGH WILL BRING WARMER AIR INTO THE REGION FOR THE MIDDLE OF THE WEEK.
IT WILL BE WINDY AND COLD WITH APPARENT TEMPERATURES/WIND CHILL FACTOR IN THE LOW TEENS OVER THE ALLEGHENIES TO MID 20S IN THE SOUTHEAST. HIGH PRESSURE WILL BUILD INTO THE AREA LATER TONIGHT AND BRING AND END TO THE LES OFF OF LAKE ERIE. HIGH PRESSURE WILL BRING FAIR AND DRY WEATHER ON SUNDAY.
1035 AM EST SAT DEC 19 2015 HIGH PRESSURE AT THE SURFACE IN CONTROL THIS MORNING ACROSS THE EASTERN TENNESSEE VALLEY AND SOUTHERN APPALACHIAN REGION. CHATTANOOGA AIRPORT, TN 52 29 55 41 / 0 0 0 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 48 26 53 39 / 0 0 0 10 OAK RIDGE, TN 48 26 53 38 / 0 0 0 10 TRI CITIES AIRPORT, TN 43 22 54 31 / 0 0 0 10.
THE LOW CLOUDS SHOULD RETURN LATE THIS EVENING. SURFACE TO UPPER LEVEL RIDGING GIVES WAY AS AN UPPER LEVEL TROUGH CURRENTLY OFF THE WEST COAST MOVES TO THE GREAT BASIN AREA AS IT WEAKENS WITH SURFACE PRESSURES FALLING IN THE HIGH PLAINS.
LATEST REPORT WAS A VERY BRIEF PERIOD OF FREEZING RAIN AT GLASGOW. FREEZING RAIN. HAVE ALSO UPDATED THE SPECIAL WEATHER STATEMENT THAT ADVERTISES THE POSSIBILITY OF FREEZING PRECIPITATION OVER THE NORTHWEST. AN UPPER LEVEL RIDGE AXIS EXTENDED ALONG THE FRONT RANGE AND WESTERN PLAINS. WITH WARMER AIR TO THE WEST.
422 AM CST SAT DEC 19 2015 (Today and Tonight) A short wave ridge will be over the area today, with a transition to southwest flow aloft tonight as an upper level trough moves inland from the California coast. It will be warmer today, with afternoon highs in the lower and middle 60s, with gusty south winds developing. With the increase in low level moisture and cloud cover, temperatures will be warmer overnight with lows mainly in the upper 40s.
710 AM EST SAT DEC 19 2015 STRONG HIGH PRESSURE WILL BUILD INTO THE AREA FROM THE WEST THROUGH SUNDAY.
IDEAL RADIATIONAL COOLING CONDITIONS HAS AN INVERSION THROUGH THE LOW LEVELS WITH THE WARM NOSE AT 700 MB. /ISSUED 402 AM CST SAT DEC 19 2015/ JUST A COUPLE DAYS LEFT OF CLEAR SKIES AND COOLER TEMPS BEFORE WARMTH AND WET PATTERN TAKES HOLD. POINTS SOUTH AND WEST OF THOSE AREAS SHOULD SEE WARMER TEMPS BY ABOUT 5 DEGREES AS DEWPOINTS INCREASE SLIGHTLY.
STEADY ACCUMULATING SNOW WILL FINALLY END THIS MORNING IN THE WEST CENTRAL IDAHO MOUNTAINS AFTER A COLD FRONT MOVES THROUGH FROM WEST TO EAST. PARTIAL CLEARING IN ALL AREAS TONIGHT AFTER THE UPPER TROUGH ALSO MOVES THROUGH FROM WEST TO EAST.
546 AM EST SAT DEC 19 2015 HIGH PRESSURE APPROACHING FROM THE WEST TODAY WILL BE OVER THE FORECAST AREA TONIGHT. THE HIGH WILL SHIFT OFF THE COAST SUNDAY AFTERNOON.
HIGH PRESSURE HAS MOVED INTO LA BUT RIDGING CONTINUES OVER THE AREA. OVERNIGHT DEWPOINTS WILL CLIMB WITH SOUTHEASTERLY FLOW INCREASING AND CLOUDS WILL BE INCREASING AS WELL AS NEXT UPPER TROUGH MOVES INTO NV/UT/AZ.
THE COLD FRONT WITH YESTERDAY'S SYSTEM CONTINUES TO MOVE SLOWLY EAST ACROSS UNION, GRANT AND WALLOWA COUNTIES EARLY THIS MORNING.
HIGH PRESSURE ALOFT IS MOVING ACROSS COLORADO EARLY THIS MORNING. AND 60 MPH FOR THE LOWER ELEVATIONS ARE POSSIBLE. MODELS INDICATE POTENTIAL FOR GUSTS TO AROUND 75 MPH ACROSS THE HIGHER ELEVATIONS AND GUSTS TO AROUND 60 MPH ACROSS THE LOWER ELEVATIONS THROUGH AT LEAST MIDDAY BEFORE GRADUALLY DECREASING. GUSTS TO AROUND 60 MPH WILL BE POSSIBLE ACROSS THE HIGHER TERRAIN WITH GUSTS TO AROUND 40 MPH POSSIBLE ACROSS THE LOWER ELEVATIONS.
LOWER LEVEL SATURATION OCCURS DURING THE MORNING IN THE EAST AND THERE COULD BE SOME FREEZING DRIZZLE. SO WE WILL MAINTAIN SOME LOWER POPS FOR LIGHT SNOW/SLEET AND SOME FREEZING DRIZZLE.
346 AM MST SAT DEC 19 2015 WARMER WEATHER WILL CONTINUE TODAY BEFORE A WEAK WEATHER SYSTEM CROSSES ARIZONA ON SUNDAY AND BRINGS COOLER BUT STILL SEASONABLE TEMPERATURES TO THE SOUTHWEST. LATEST STREAMLINE ANALYSIS SHOWS A RETURN FLOW DEVELOPING BETWEEN A RIDGE ACROSS MEXICO AND AN APPROACHING TROUGH ALONG THE WEST COAST. TEMPERATURES WILL REMAIN ABOVE AVERAGE FOR ONE MORE DAY WITH HIGHS GENERALLY IN THE UPPER 60S ACROSS THE LOWER DESERTS. AFOREMENTIONED TROUGH ALONG THE WEST COAST WILL CONTINUE TO WEAKEN AS IT SLIDES EASTWARD TOWARDS THE FOUR CORNERS SUNDAY. HIGHS WILL LIKELY STRUGGLE TO REACH THE LOWER 60S IN THE PHOENIX AREA. WEST TO NORTHWEST FLOW WILL PREVAIL THROUGH MIDWEEK ACROSS THE DESERT SOUTHWEST AS A LARGE ANTICYCLONE ACROSS THE CENTRAL PACIFIC PREDOMINATES.
AS UPPER RIDGE TO THE WEST SHIFTS EAST ACROSS NORTHERN GULF STATES. FOR EARLY THIS MORNING A LIGHT FREEZE WILL BE LIKELY FOR MOST INLAND AREAS LEADING TO A FREEZE WARNING FOR THE LOWER HALF OF THE FORECAST AREA THROUGH 8 AM CST THIS MORNING. FOR TONIGHT WITH DEEP RIDGING OVER THE REGION BELIEVE WE WILL SEE A LIGHT FREEZE AGAIN FOR MOST INLAND AREAS OCCURRING DURING EARLY MORNING HOURS BEFORE SUNRISE. AS FOR TEMPS WILL LEAN TOWARDS THE WARMER MAV GUIDANCE FOR HIGHS TODAY DUE TO BETTER SUBSIDENCE ALOFT. THEN THE COOLER MAV NUMBERS OVERNIGHT AND EARLY SUNDAY DUE TO CLEAR SKIES RESULTING IN GOOD RADIATIONAL COOLING FOR MOST INLAND AREAS.
12Z TAF SET HIGH PRESSURE WILL MOVE INTO THE REGION TODAY.
404 AM CST SAT DEC 19 2015 HIGH PRESSURE CENTERED OVER THE TENNESSEE VALLEY THIS MORNING WILL CONTINUE TO SLIDE EAST THROUGH THE WEEKEND. HIGH TEMPERATURES TODAY SHOULD REACH INTO THE LOWER AND MID 50S WITH LOWS TONIGHT AROUND 30 DEGREES EAST TO THE UPPER 30S ACROSS THE DELTA REGION. HIGHS SUNDAY WILL BE EVEN WARMER. THE UPPER PATTERN WILL TRANSITION TO SOUTHWESTERLY ALOFT ACROSS THE REGION BY SUNDAY NIGHT AS AN UPPER LEVEL TROUGH DIGS ACROSS THE WESTERN STATES.
A COLD FRONT WILL PRODUCE MODERATE TO HEAVY RAINFALL WITH SNOW OCCURRING AT HIGHER ELEVATIONS SATURDAY NIGHT INTO SUNDAY.
BROAD HIGH PRESSURE CURRENTLY CENTERED IN THE DEEP SOUTH WILL CONTINUE TO PUSH TOWARDS THE CAROLINA COAST BY SUNDAY MORNING.
WARMER WEATHER WILL CONTINUE TODAY BEFORE A WEAK WEATHER SYSTEM CROSSES ARIZONA ON SUNDAY AND BRINGS COOLER BUT STILL SEASONABLE TEMPERATURES TO THE SOUTHWEST. LATEST STREAMLINE ANALYSIS SHOWS A RETURN FLOW DEVELOPING BETWEEN A RIDGE ACROSS MEXICO AND AN APPROACHING TROUGH ALONG THE WEST COAST. TEMPERATURES WILL REMAIN ABOVE AVERAGE FOR ONE MORE DAY WITH HIGHS GENERALLY IN THE UPPER 60S ACROSS THE LOWER DESERTS. AFOREMENTIONED TROUGH ALONG THE WEST COAST WILL CONTINUE TO WEAKEN AS IT SLIDES EASTWARD TOWARDS THE FOUR CORNERS SUNDAY. HIGHS WILL LIKELY STRUGGLE TO REACH THE LOWER 60S IN THE PHOENIX AREA. WEST TO NORTHWEST FLOW WILL PREVAIL THROUGH MIDWEEK ACROSS THE DESERT SOUTHWEST AS A LARGE ANTICYCLONE ACROSS THE CENTRAL PACIFIC PREDOMINATES.
234 AM PST SAT DEC 19 2015 SLIGHTLY COOLER TODAY WITH INCREASING CLOUDS. A COLD FRONT WILL MOVE SOUTHWARD THROUGH FAR SOUTHERN CALIFORNIA DURING THE LATE AFTERNOON AND EVENING BRINGING A PERIOD OF SHOWERS. EXCEPT FOR THE LOWER DESERTS. COOLER FOR SUNDAY.
BUT HIGH CLOUDS WILL BE ON THE INCREASE TONIGHT AHEAD OF AN UPPER-LEVEL TROUGH MOVING ACROSS THE GREAT BASIN.
515 AM EST SAT DEC 19 2015 SNOW SHOWERS TAPER OFF TODAY AS HIGH PRESSURE TAKES HOLD THROUGH SUNDAY.
SOUTHWEST WINDS WILL INCREASE AHEAD OF A COLD FRONT LATE THIS AFTERNOON AND EVENING. THE COLD FRONT WILL MOVE INLAND LATE SUNDAY MORNING AND WINDS WILL DIMINISH.
BREEZY AND MOSTLY CLEAR NIGHT FARTHER EAST AS HIGH PRESSURE BUILDS IN. HIGH PRESSURE BUILDS IN RAPIDLY SUNDAY.
LEAVING CLEARING SKIES AND DRY CONDITIONS BY THIS AFTERNOON AND TONIGHT AS HIGH PRESSURE BUILDS IN. WINDS THEN DIMINISH/BACK UNDER A MAINLY CLEAR SKY BY LATE AFTERNOON/TONIGHT AS LOW LEVEL RIDGE AXIS WORKS IN UNDER BUILDING HEIGHTS ALOFT. BRIEF/WK SFC RIDGING FOLLOWS TUE AHD OF NXT MORE POTENT AMPLIFYING THROUGH THE NRN PLAINS. AGAIN RICH LL MSTR FOR DEC XPCD TO CARRY NWD AHD OF ATTENDANT EWD SWEEPING FNTL ZONE W/RAIN LIKELY AGAIN WED FOLLOWED BY REPEAT WK SFC RIDGING THU-FRI BEFORE PATTN RELOADS YET AGAIN LT PD. MAINLY VFR THIS PERIOD WITH WEST WINDS GENERALLY 12-16 KNOTS THROUGH EARLY AFTERNOON DIMINISHING LATE AFTN/TONIGHT AS HIGH PRESSURE BRIEFLY BUILDS IN.
515 AM CST SAT DEC 19 2015 High pressure currently extending from the Northern Plains to the Gulf Coast will control the weather across central Illinois today. With ridge axis drifting overhead and subsidence inversion lowering, mixing heights will be limited to 2000ft or less. This will result in afternoon high temperatures a degree or two colder than yesterday, with readings only reaching the lower to middle 30s. As high pressure shifts east of the region, a southerly return flow will bring warmer weather back into Illinois on Sunday. The pressure gradient between the departing high and an approaching cold front will tighten sufficiently to produce sustained southerly winds of 15 to 25 mph. While high clouds will rapidly increase and limit insolation, strong WAA will help boost high temperatures into the lower to middle 50s.
Know that temperatures will be typical for this time of year, struggling to reach freezing each day for most locations above 2500 feet.
1000 AM EST SAT DEC 19 2015 THE NEAR TERM SECTION HAS BEEN UPDATED BELOW HIGH PRESSURE WILL BUILD ACROSS THE REGION THIS WEEKEND.
402 AM CST SAT DEC 19 2015 JUST A COUPLE DAYS LEFT OF CLEAR SKIES AND COOLER TEMPS BEFORE WARMTH AND WET PATTERN TAKES HOLD. POINTS SOUTH AND WEST OF THOSE AREAS SHOULD SEE WARMER TEMPS BY ABOUT 5 DEGREES AS DEWPOINTS INCREASE SLIGHTLY.
WILL CONTINUE THE MENTION OF POSSIBLE FREEZING RAIN AND SLEET THIS MORNING NORTHWEST. LATEST REPORT WAS A VERY BRIEF PERIOD OF FREEZING RAIN AT GLASGOW. FREEZING RAIN. HAVE ALSO UPDATED THE SPECIAL WEATHER STATEMENT THAT ADVERTISES THE POSSIBILITY OF FREEZING PRECIPITATION OVER THE NORTHWEST. AN UPPER LEVEL RIDGE AXIS EXTENDED ALONG THE FRONT RANGE AND WESTERN PLAINS. WITH WARMER AIR TO THE WEST.
452 AM MST SAT DEC 19 2015 THE RIDGE SHIFTED EAST THIS EARLY MORNING AND MILD SW GRADIENT WINDS WERE INCREASING OVER THE HIGHER TERRAIN. THE FIRST TROUGH IN A SERIES COMES ONSHORE SATURDAY AFTERNOON AND WILL WEAKEN AS IT WORKS THROUGH THIS FORECAST AREA ON SUNDAY. THE SURFACE COLD FRONT PASSES EARLY SUNDAY MORNING WITH SNOW DEVELOPING NEAR THE FRONTAL BAND OVER THE MOUNTAINS AND ALSO VALLEYS MAINLY ALONG AND NORTH OF I-70.
WARMER TEMPERATURES CAN BE EXPECTED FOR SUNDAY. CLOUDS THIS MORNING WILL GIVE WAY TO SUNSHINE SOUTH TO NORTH AS FLOW TURNS SOUTHWEST WITH SUBSIDENCE UNDER ADVANCING HIGH PRESSURE.
840 AM EST SAT DEC 19 2015 HIGH PRESSURE WILL BUILD SOUTH ACROSS THE REGION TODAY. AS HIGH PRESSURE BUILDS SOUTH.
932 AM EST SAT DEC 19 2015 STRONG HIGH PRESSURE WILL BUILD INTO THE AREA FROM THE WEST THROUGH SUNDAY.
341 AM MST SAT DEC 19 2015 HIGH PRESSURE RIDGE ALOFT NOW OVER COLORADO WILL SHIFT INTO THE CENTRAL PLAINS BY THIS EVENING. AIRMASS IS DRY AND STABLE BUT EXPECT SOME INCREASE IN HIGH LEVEL CLOUDS THROUGH THE PERIOD IN ADVANCE OF NEXT WEAK UPPER TROF. EXPECT WARMER NIGHTTIME LOWS TONIGHT GIVEN ENHANCED DOWNSLOPE FLOW AND MORE CLOUD COVER. MOISTURE WILL BE INCREASING AS THE NEXT UPPER TROUGH PUSHES IN FROM THE GREAT BASIN. MODELS HAVE SLOWED THIS TROUGH DOWN. AS THE TROUGH AXIS CROSSES THE STATE IN THE AFTERNOON. SNOWFALL WILL LIKELY PICK UP BEFORE SLIGHT UPPER RIDGING THAT EVENING CUTS OFF THE MOISTURE FEED. OVERALL SHOULD SEE A FEW INCHES FALL OVER THE HIGHER MOUNTAINS. WITH COOLER TEMPERATURES BEHIND A COLD FRONT AFTERNOON. READINGS WILL BE ABOUT 10 DEGREES COOLER THAN TODAY.
935 AM EST SAT DEC 19 2015 KTBW 12Z SOUNDING IS SHOWING A SUBSTANTIALLY COOLER SURFACE LAYER THAN 24 HOURS AGO AND A VERY DRY ATMOSPHERIC COLUMN UP THROUGH 400 MB. TO THE LOW 70S OVER LEE COUNTY. THOUGH LOWS WILL GENERALLY BE A FEW DEGREES WARMER THAN THIS MORNING.
HIGH PRESSURE WAS SITUATED ACROSS THE DEEP SOUTH THIS MORNING AND IS FORECAST TO SHIFT INTO THE LOWER APPALACHIANS TONIGHT INTO SUNDAY.
1047 AM EST SAT DEC 19 2015 SNOW SHOWERS TAPER OFF TODAY AS HIGH PRESSURE TAKES HOLD THROUGH SUNDAY.
618 AM EST SAT DEC 19 2015 HIGH PRESSURE WILL BUILD INTO THE REGION TODAY. THE HIGH WILL GRADUALLY MOVE OFF TO THE EAST TONIGHT AND SUNDAY.
SFC RIDGING IN PLACE THIS MORNING OVER ERN AR/NCNTRL LA WILL SHIFT E OF THE REGION TODAY.
VFR CONDITIONS WILL PREVAIL ACROSS THE AREA TODAY AS THE 500MB RIDGE ACROSS THE CENTRAL UNITED STATES CONTINUES TO PROVIDE SUBSIDENCE ACROSS SOUTH TEXAS. 500MB RIDGE ACROSS THE CENTRAL UNITED STATES WILL CONTINUE TO PROVIDE SUBSIDENCE ACROSS THE CWA TODAY EVEN AS AN ONSHORE FLOW DEVELOPS AT THE SURFACE THIS AFTERNOON. LOW TO MID LEVEL MOISTURE WILL INCREASE ACROSS PORTIONS OF THE STATE TONIGHT INTO SUNDAY AS A 500MB TROUGH MOVES EASTWARD ACROSS THE WESTERN PORTIONS OF THE UNITED STATES.
950 AM EST SAT DEC 19 2015 HIGH PRESSURE WILL BUILD INTO THE REGION TODAY. THE HIGH WILL GRADUALLY MOVE OFF TO THE EAST TONIGHT AND SUNDAY.
THE HIGH WILL SHIFT SLOWLY TO THE EAST TODAY AND MORE OF OUR CWA WILL COME UNDER LIGHT RETURN FLOW. AND HIGH PRESSURE CENTERED OVERTOP HAS ALLOWED TEMPS TO DROP INTO THE UPPER 20S/LOWER 30S. THE BEGINNINGS OF WARM WEATHER WILL COMMENCE TODAY AS THE HIGH PRESSURE CENTER SHIFTS EAST AND RIDGING OCCURS ALOFT. HIGH PRESSURE WILL BE FAR ENOUGH EAST BY SUNDAY TO ALLOW THE GULF TO OPEN UP AND WITH FLOW BECOMING SOUTHWESTERLY ALOFT.
A COLD FRONT IS BRINGING LIGHT RAIN TO THE SANTA CLARA VALLEY AND MONTEREY BAY REGION THIS MORNING. A LOW PRESSURE TROUGH AXIS IS CURRENTLY SITUATED ALONG THE PACIFIC COASTLINE FROM BRITISH COLUMBIA TO THE BAY AREA. THIS SYSTEM HAS WEAKENED STEADILY OVER THE PREVIOUS 12 TO 24 HOURS AS IT BEGAN TO PUSH ONSHORE AND AT THE SAME TIME THE SURFACE COLD FRONT STALLED AND WEAKENED. THE SURFACE COLD FRONT IS NOW DRAPED FROM THE SOUTHWEST OVER THE MONTEREY BAY REGION NORTHEAST TOWARDS SACRAMENTO. A STRONGER EMBEDDED JET WITHIN THE PROGRESSIVE PATTERN CARVES OUT A BROAD BAGGY TROUGH OFF OF THE PACIFIC COAST LEADING UP TO CHRISTMAS EVE. THIS STORM WILL MARK A TANGIBLE SHIFT IN THE UPCOMING WEATHER PATTERN BY INTRODUCING A MORE DOMINANT LOW PRESSURE ELEMENT TO THE MIX.
/ISSUED 340 AM CDT FRI AUG 21 2015/ COLD FRONT STALLED OVER SOUTHERN ARK THIS MORNING WILL BEGIN TO MOVE BACK TO THE NORTH LATER TODAY.
1101 AM EDT FRI AUG 21 2015 COLD FRONT HAS MOVED OFF THE MID ATLANTIC COAST. HIGH PRESSURE WILL BUILD INTO THE AREA TODAY AND FOR THE WEEKEND.
DIFFUSE COLD FRONT HAS MOVED INTO THE AREA FROM THE UPSTATE THIS MORNING. UPPER LEVEL RIDGE CONTINUES OVER THE EAST GULF OF MEXICO. WEAK SHORT WAVE TROUGHS LIFTING NORTHEAST FROM THE GULF COAST STATES AROUND RIDGE INTO GEORGIA AND CAROLINA. TEMPERATURES COOLER IN THE NORTH BUT STILL ABOVE NORMAL ACROSS MOST OF THE AREA.
HIGH PRESSURE WILL BE IN CONTROL OF THE WEATHER WHICH WILL BRING DRY CONDITIONS WITH PARTLY TO MOSTLY CLEAR SKIES. AND IN THE LOWER 80S ON SATURDAY.
THIS TROUGH WILL NOT MOVE MUCH BUT SHOULD BE A FOCUS FOR CONVECTION THIS AFTERNOON AS A WEAK WAVE MOVES ALONG THE BOUNDARY.
611 AM CDT FRI AUG 21 2015 SOME MVFR CIGS OBSERVED THIS MORNING AS MOISTURE BEGINS TO LIFT BACK NORTH WITH A WARM FRONT.
ALONG WITH WARMER TEMPERATURES AND HIGHS AROUND 80 EAST OF THE INTERSTATE 29 CORRIDOR TO THE UPPER 80S THROUGH THE WESTERN JAMES RIVER VALLEY. A FAIRLY STRONG COLD FRONT WILL SWEEP THROUGH THE AREA ON SATURDAY BRINGING CHANGES TO THE WEATHER AND A CHANCE FOR THUNDERSTORMS. BY EARLY AFTERNOON THE COLD FRONT SHOULD BE THROUGH MOST OF THE SOUTH DAKOTA COUNTIES.
945 AM EDT FRI AUG 21 2015 A COLD FRONT SLOWLY CROSSES THE AREA THROUGH THIS EVENING. THE FRONT WILL DISSIPATE OVER OR JUST EAST OF THE AREA THIS WEEKEND WHILE HIGH PRESSURE BUILDS TO THE NORTH AND WEAK LOW PRESSURE PASSES WELL OFFSHORE.
1018 AM EDT FRI AUG 21 2015 HIGH PRESSURE WILL PROVIDE COOLER AND DRIER AIR THROUGH TODAY AND SATURDAY.
THE DRIER AND COOLER AIRMASS IS NOW A DISTANT MEMORY AS VERY HUMID AIR HAS SPREAD NORTH ACROSS MOST OF OKLAHOMA THIS MORNING.
STACKED ANTICYCLONE REMAINS ROOTED ACROSS THE NORTHEASTERN GULF OF MEXICO. THIS FEATURE HAS BECOME MORE CELLULAR DUE TO THE EROSION OF ITS EASTERN FLANK BY MID LATITUDE TROUGH. MOISTURE IS ADEQUATE IN THE LOWER TROPOSPHERE. A WEAK RIDGE OF HIGH PRESSURE WILL REMAIN NEAR THE FLORIDA KEYS THIS WEEKEND.
RIDGE OF HIGH PRESSURE WITH LIGHT WINDS WILL BUILD OVER THE REGION FOR THE WEEKEND SO EXPECT A BUILD UP OR INCREASE OF MORE SMOKE AND HAZE ACROSS THE FORECAST AREA. STRONG UPPER LEVEL TROUGH IS MOVING ACROSS THE PACIFIC NORTHWEST TODAY. OTHERWISE CLEAR TO PARTLY CLOUDY SKIES TODAY WITH COOLER TEMPERATURES.
1211 PM EDT FRI AUG 21 2015 HIGH PRESSURE OVER THE OHIO VALLEY WILL BUILD EAST INTO PENNSYLVANIA TODAY AND REMAIN OVER THE REGION THROUGH THE UPCOMING WEEKEND.
725 AM EDT FRI AUG 21 2015 HIGH PRESSURE OVER THE OHIO VALLEY WILL BUILD EAST INTO PENNSYLVANIA TODAY AND REMAIN OVER THE REGION THROUGH THE UPCOMING WEEKEND.
GFS/NAM STREAMLINES DEPICT AN UPPER TROUGH AXIS OVER THE ERN CWA.
813 AM EDT FRI AUG 21 2015 HIGH PRESSURE OVER THE OHIO VALLEY WILL BUILD EAST INTO PENNSYLVANIA TODAY AND REMAIN OVER THE REGION THROUGH THE UPCOMING WEEKEND.
FORECAST ON TRACK WITH DRY COLD FRONTAL PASSAGE THIS AFTERNOON AND ASSOCIATED INCREASE IN WIND SPEEDS. A SHORT WAVE TROUGH MOVING SE THROUGH BRITISH COLUMBIA THIS MORNING WILL MOVE ACROSS NRN ID AND INTO MT TODAY AND TONIGHT. A COLD FRONT WILL MOVE THROUGH MUCH OF SE OREGON THIS AFTERNOON. TEMPS SATURDAY WILL BE 2 TO 8 DEGREES COOLER. OVERNIGHT LOWS TONIGHT WILL AVERAGE AROUND 5 DEGREES BELOW NORMAL IN THE WAKE OF THE COLD FRONT.
900 AM PDT FRI AUG 21 2015 HIGH PRESSURE TO THE EAST WILL EXPAND WESTWARD BRINGING A WARMING TREND AND A GRADUALLY SHALLOWER MARINE LAYER FOR THE COMING WEEK.
928 AM EDT FRI AUG 21 2015 HIGH PRESSURE WITH DRIER AIR INTO THE WEEKEND.
917 AM EDT FRI AUG 21 2015 HIGH PRESSURE IS EXPECTED TO BRING DRY WEATHER AND LOW HUMIDITY THROUGH THE WEEKEND. BUILDING HIGH PRESSURE IS EXPECTED TO BRING MAINLY CLEAR SKIES AND DRY WEATHER TODAY.
THUNDERSTORMS WILL GENERALLY REMAIN CONFINED TO THE HIGHER TERRAIN OF SOUTHERN AND EASTERN ARIZONA THROUGH THE WEEKEND.
GIVEN NAEFS 500 MB HEIGHT VALUES IN THE LOWEST 1 PERCENTILE AND BELOW. FOCUSING ACROSS MOST OF CENTRAL AND EASTERN NORTH DAKOTA SATURDAY EVENING AND SATURDAY NIGHT IN A STRONG DEFORMATION ZONE/TROWAL AS THE UPPER LEVEL LOW CONTINUES TO DEEPEN.
SUBJECTIVE 00Z UPPER AIR ANALYSIS INDICATES BROAD UPPER-LEVEL TROUGH AXIS OVER THE EASTERN GREAT LAKES TO MID- ATLANIC. 850MB MOISTURE WAS RETURNING TO THE HIGH PLAINS ON THE NOSE OF A VEERING LOW-LEVEL JET. AS POTENT UPPER-LEVEL TROUGH DIVES ACROSS THE NORTH CENTRAL US AND LIKELY CLOSES OFF INTO A LOW WHILE IT DRAGS A COLD FRONT THROUGH THE CENTRAL US ON SATURDAY.
FOCUSING THE HIGHEST RAINFALL CHANCES IN PARTS OF NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS FROM EARLY TOMORROW MORNING THROUGH TOMORROW AFTERNOON.
1257 PM EDT FRI AUG 21 2015 COOLER AIR WILL BUILD INTO THE REGION BEHIND A COLD FRONT THIS AFTERNOON.
(Today and Tonight) Warmer temperatures return to the area today, along with an increase in southerly winds as a lee trough strengthens. High temperatures today will be in the lower and middle 90s, with lows tonight in the lower and middle 70s.
STILL EXPECTING INCREASING SOUTHERLY WINDS AHEAD OF THE APPROACHING LOW PRESSURE SYSTEM. BREEZY SOUTHERLY WINDS WILL DEVELOP TODAY AS 850 MB TEMPS CLIMB INTO THE LOW TO MID 20S CELSIUS. HIGHS TODAY WILL BE SEVERAL DEGREES WARMER THAN YESTERDAY. AS THE POTENT UPPER LOW MOVES EAST ACROSS ND SATURDAY NIGHT.
1049 AM MDT FRI AUG 21 2015 A PACIFIC TROUGH WORKS THROUGH THE NORTHERN ROCKIES LATE TODAY AND TONIGHT THEN DEEPENS ON THE NORTHERN PLAINS ON SATURDAY. DRY CONDITIONS FOR THE LOWER ELEVATIONS FROM THE I-70 CORRIDOR NORTHWARD RAISE FIRE CONCERNS. AN ASSOCIATED COLD FRONT PUSHES JUST SOUTH OF THE WYOMING BORDER LATE TONIGHT INTO SATURDAY MORNING.
BUT A SURGE OF MOISTURE IS EXPECTED ACROSS MOST OF THE PANHANDLES THIS AFTERNOON AS THE LEESIDE TROUGH DEEPENS.
Per the latest ECAM guidance, the highest coverage of storms this afternoon is expected to be across the western part of the forecast area.
910 AM CDT FRI AUG 21 2015 230 AM CDT HIGH PRESSURE IS CENTERED OVER THE LOWER OHIO VALLEY AND WILL SHIFT NORTHEAST THROUGH TONIGHT. THE HIGH THEN REMAINS OVER THE EAST COAST THROUGH SATURDAY NIGHT. EXPECTING SCATTERED CUMULUS CLOUDS TO FORM BY MID MORNING WHILE SOUTHWEST WINDS USHER IN WARMER AIR. WARMER AIR ALOFT WILL ALSO HELP US BE WARMER THAN YESTERDAY DESPITE ANOTHER CHILLY START TO THE DAY. THE UPPER LEVEL RIDGE SHIFTS EAST SATURDAY WHILE THE NEXT UPPER LEVEL TROUGH MOVES OVER THE NORTHERN PLAINS. THE CLEAR SKIES AND AMPLE MIXING WILL ALLOW TEMPS TO GET INTO THE LOW 80S.
613 AM CDT FRI AUG 21 2015 BREEZY SOUTHERLY WINDS WILL DEVELOP TODAY AS 850 MB TEMPS CLIMB INTO THE LOW TO MID 20S CELSIUS. HIGHS TODAY WILL BE SEVERAL DEGREES WARMER THAN YESTERDAY. AS THE POTENT UPPER LOW MOVES EAST ACROSS ND SATURDAY NIGHT.
DRIVING A STRONG COLD FRONT ACROSS THE CWA EARLY IN THE DAY.
1053 AM EDT FRI AUG 21 2015 HIGH PRESSURE WILL PREDOMINATE THROUGH THE END OF THE WEEK.
DRY CONDITIONS AND HIGH PRESSURE WILL SUSTAIN MAINLY CLEAR SKIES AND LIGHT WINDS THROUGH TONIGHT. HIGHS 5-7 DEGREES WARMER THAN YESTERDAY /UPPER 70S/ ARE A REASONABLE EXPECTATION GIVEN PLENTY OF SUN AND DEPARTURE OF THE THERMAL TROUGH. SLIGHTLY ENHANCED GRADIENT ACROSS THE NW MAY LEAD TO SLIGHTLY WARMER LOWS IN THE SAGINAW VALLEY AREA.
COOLER TEMPERATURES ARE EXPECTED TODAY WITH HIGHS IN THE 70S TO AROUND 80.
1132 AM CDT FRI AUG 21 2015 230 AM CDT HIGH PRESSURE IS CENTERED OVER THE LOWER OHIO VALLEY AND WILL SHIFT NORTHEAST THROUGH TONIGHT. THE HIGH THEN REMAINS OVER THE EAST COAST THROUGH SATURDAY NIGHT. EXPECTING SCATTERED CUMULUS CLOUDS TO FORM BY MID MORNING WHILE SOUTHWEST WINDS USHER IN WARMER AIR. WARMER AIR ALOFT WILL ALSO HELP US BE WARMER THAN YESTERDAY DESPITE ANOTHER CHILLY START TO THE DAY. THE UPPER LEVEL RIDGE SHIFTS EAST SATURDAY WHILE THE NEXT UPPER LEVEL TROUGH MOVES OVER THE NORTHERN PLAINS. THE CLEAR SKIES AND AMPLE MIXING WILL ALLOW TEMPS TO GET INTO THE LOW 80S.
TEMPS RANGE FROM THE MID 50S AT PARIS TO THE LOWER 70S ACROSS PARTS OF NORTHEAST MISSISSIPPI. THE STALLED FRONT WILL SLOWLY BEGIN TO LIFT BACK NORTH AS A WARM FRONT.
A lee trough will continue today across eastern Colorado leading to southerly winds throughout the day. This feature will help push a cold front through the area late afternoon into Saturday night shifting winds to more of a northeasterly direction.
ADDITIONAL HEAVY RAINFALL POSSIBLE WITH THUNDERSTORMS ACROSS LIGHT WINDS AS DEEP LAYERED HIGH PRESSURE CONTINUES TO HOLD OVER THE AREA. TEMPERATURES AT 500 MB ARE A WARMER -6 DEG C.
1123 AM EDT FRI AUG 21 2015 HIGH PRESSURE WILL PROVIDE COOLER AND DRIER AIR THROUGH TODAY AND SATURDAY.