Aikyam-Lab/Synoptic-Bench huggingface dataset:
927 AM MDT FRI AUG 14 2015 STRONG UPPER HIGH PERSISTS OVER THE DESERT SOUTHWEST. WATER VAPOR IMAGERY SHOWS SOME CLOUDS STREAMING INTO THE NORTHERN PLAINS THROUGH THE RIDGE. TODAY THROUGH SATURDAY NIGHT UPPER LEVEL ANALYSIS HAS HIGHLY AMPLIFIED FLOW WITH LARGE RIDGE ACROSS THE FOUR CORNERS REGION. AND CUT-OFF LOW OFF THE OREGON COAST. HIGH PRESSURE IS IN CONTROL WITH 2 AM TEMPERATURES IN THE 60S TO LOWER 70S. UPPER RIDGE REMAINS ACROSS THE NORTHERN PLAINS WITH ABOVE AVERAGE TEMPERATURES EXPECTED. UPPER LOW OFF THE COAST LIFTS THROUGH THE NORTHERN ROCKIES. FLATTENING THE RIDGE ACROSS THE FOUR CORNERS AREA. LOW TEMPERATURES SATURDAY NIGHT WILL BE SLIGHTLY COOLER BEHIND THE FRONT.
A SOMEWHAT TILTED AND DISORGANIZED INVERTED LOW LEVEL TROUGH (RUNNING FROM SOUTHWEST LA NORTHEAST INTO NORTHERN AL) MAY BE ABLE TO KICK UP A FEW SHOWERS THROUGH THIS AFTERNOON. EXPECT MORE WARM TEMPS WITH HIGHS GENERALLY IN THE LOW TO MID 90S AND A BIT MORE HUMIDITY ALONG AND SOUTH OF THE HIGHWAY 84 CORRIDOR AND OVER FAR EASTERN MS.
1038 AM EDT FRI AUG 14 2015 WEAK HIGH PRESSURE TO THE NORTH WILL BRING SEASONABLE WEATHER AND SOMEWHAT LOWER HUMIDITY OVER THE WEEKEND. AS HIGH PRESSURE REMAINS CENTERED TO OUR NORTH. A FORMER COLD FRONT WILL REMAIN STALLED WELL OFFSHORE THROUGH THIS PERIOD. THE REGION WILL BE UNDER A WEAKNESS ALOFT WITH RIDGING ACROSS THE ATLANTIC AND ACROSS THE SOUTHWEST.
CHATTANOOGA AIRPORT, TN 88 70 88 69 / 20 20 20 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 86 68 86 67 / 20 20 20 10 OAK RIDGE, TN 87 68 87 67 / 20 20 20 10 TRI CITIES AIRPORT, TN 85 64 85 63 / 30 20 20 10.
BUT THE LOWER RH NUMBERS WILL MAKE IT A BIT LESS STICKY.
1050 AM EDT FRI AUG 14 2015 A BROAD AREA OF HIGH PRESSURE WILL REMAIN OVER THE REGION THROUGH SATURDAY. A WEAK COLD FRONT WILL DISSIPATE OVER THE AREA SATURDAY NIGHT.
A WEAK TROUGH WILL REMAIN EAST OF THE APPALACHIANS. AMIDST AN AREA OF CANADIAN HIGH PRESSURE CENTERED NEAR THE MIDDLE ATLANTIC COAST.
Big picture across the CONUS shows a bit of an amplified pattern in place with a ridge to our west leaving our section of the country under the edge of a northwest flow. This will force the ridge to expand over the Plain States with the pattern flattening out as we go into the next work week. the chance of storms will return as couple of troughs moving into the prevailing westerlies to our north and start dipping into the Central Plains.
1150 AM EDT FRI AUG 14 2015 HYDRO A WEAK COLD FRONT WASHES OUT OVER SOUTHWEST LOWER MICHIGAN TODAY RESULTING IN SCATTERED AFTERNOON THUNDERSTORMS OVER AREAS AND EAST OF LANSING. OTHERWISE IT WILL PARTLY CLOUDY AND WARMER TODAY WITH HIGHS WELL UP INTO THE 80S.
BROAD UPPER RIDGING REMAINS SITUATED OVER THE CENTRAL AND SOUTHERN ROCKIES INTO THE DESERT SW WITH AN UPPER TROUGH OVER THE EASTERN SEABOARD. HIGH PRESSURE EXTENDS FROM THE TENNESSEE/OHIO VALLEY INTO THE EASTERN OZARKS WITH WEAK LOW PRESSURE OVER THE HIGH PLAINS. THE PATTERN TODAY WILL BE FAIRLY SIMILAR TO WHAT HAS BEEN IN PLACE THE LAST COUPLE OF DAYS WITH THE UPPER RIDGE REMAINING OVER THE CENTRAL/SOUTHERN ROCKIES WITH WEAK RETURN FLOW OVER THE PLAINS. BETTER MOISTURE AND INSTABILITY WILL AGAIN BE LOCATED OVER THE HIGH PLAINS AND WITH EASTERLY UPSLOPE FLOW.
BUT WITH MORE SUN TEMPS EAST OF THE VALLEY SHOULD BE WARMER. SHOULD HAVE A WARMER START TO THE DAY ON SAT. COLD FRONTAL PASSAGE AND SEVERE WEATHER POTENTIAL ARE THE NEXT ISSUE. THE ECMWF IS THE SLOWEST WITH THE COLD FRONTAL POSITION. LOOKING PRETTY CAPPED AHEAD OF THE COLD FRONT. COOLER TEMPS IN STORE FOR SUN WITH NO PCPN EXPECTED.
1049 AM CDT FRI AUG 14 2015 HIGH PRESSURE RIDGE OVER THE FORECAST AREA THIS MORNING. RIDGE OF HIGH PRESSURE EXTENDING FROM THE MID-ATLANTIC STATES WESTWARD INTO THE CENTRAL PLAINS WILL CONTINUE TO DOMINATE THE WEATHER TODAY. AM EXPECTING WARM AND DRY CONDITIONS WITH AFTERNOON HIGH TEMPERATURES A COUPLE OF DEGREES WARMER THAN YESTERDAY IN THE MIDDLE TO UPPER 80S. COLD FRONT CURRENTLY DRAPED ACROSS THE UPPER MIDWEST WILL SAG SOUTHWARD INTO THE GREAT LAKES TONIGHT INTO SATURDAY.
WITH DEWPTS IN THE LOW TO MID 60S. THE MAIN WEATHER FOCUS WILL CONTINUE TO BE THE HOT CONDITIONS BROUGHT ABOUT BY THE BROAD H5/H7 RIDGE THAT HAS BEEN STAGNANT OVER CENTRAL/WESTERN PORTIONS OF THE COUNTRY.
HAVE KEPT TEMPERATURES NEAR GOING AND GENERALLY IN LINE WITH GUIDANCE FOR THE BEGINNING OF THE PERIOD AS RIDGE REMAINS OVER IOWA.
FAIRLY STRONG MID AND UPPER LEVEL TROUGH IS LOCATED ACROSS THE CAROLINAS TO NRN FL AND INTO THE FAR ERN GULF OF MEXICO.
927 AM EDT FRI AUG 14 2015 HIGH PRESSURE WILL BUILD SOUTH OF THE AREA TODAY. A WEAK COLD FRONT WILL APPROACH TONIGHT AND CROSS THE AREA ON SATURDAY.
1256 PM EDT FRI AUG 14 2015 A BROAD AREA OF HIGH PRESSURE WILL REMAIN OVER THE REGION THROUGH SATURDAY. A WEAK COLD FRONT WILL DISSIPATE OVER THE AREA SATURDAY NIGHT.
1046 AM EDT FRI AUG 14 2015 STALLED OUT BOUNDARY/TROUGH REMAINS ACROSS NORTH FLORIDA WITH RATHER LIGHT AND VARIABLE FLOW ACROSS THE REGION.
A WEAKENING UPPER TROUGH WILL GIVE WAY TO A BUILDING RIDGE OVER THE REGION BY THIS WEEKEND. WEAK HIGH PRESSURE WILL REMAIN IN CONTROL OF THE REGION THROUGH TONIGHT WITH EASTERLY FLOW MOISTENING THE LOW LEVELS SLIGHTLY THROUGH THE PERIOD. HIGH TEMPERATURES REMAIN ON TRACK FOR THE LOWER 90S WITH LOWS TONIGHT IN THE MID TO UPPER 60S. MORE OF THE SAME IS EXPECTED ON SATURDAY WITH CONTINUED WEAK HIGH PRESSURE AT THE SURFACE AND WEAK BUILDING UPPER RIDGE PROVIDING SOME MID LEVEL CAPPING WILL LIMIT ATMOSPHERIC INSTABILITY AND DRY WEATHER IS EXPECTED. HIGHS IN THE LOW 90S AND LOWS IN THE UPPER 60S SATURDAY NIGHT.
708 AM CDT FRI AUG 14 2015 FOR 12Z TAFS /ISSUED 345 AM CDT FRI AUG 14 2015/ THE TENNESSEE VALLEY REMAINS SITUATED BETWEEN THE STRONG UPPER LEVEL RIDGE OVER THE WESTERN CONUS AND THE BROAD UPPER LEVEL TROUGH OVER THE EAST COAST. AN INVERTED TROUGH WAS NOTED ACROSS SOUTHERN ALABAMA. A FAIRLY STRONG UPPER TROUGH WILL MOVE INTO THE PACIFIC NORTHWEST REGION TODAY. AND WILL BEGIN TO SHIFT THE UPPER RIDGE WESTWARD. DISTURBANCES MOVING AROUND THE EASTERN PERIPHERY OF THE RIDGE WILL MERGE WITH THE UPPER TROUGH. AMPLIFYING THE TROUGH OVER THE SOUTHEAST. THE SURFACE INVERTED TROUGH WILL SHIFT TO THE NORTHEAST TODAY. THE UPPER TROUGH WILL REMAIN ACROSS THE MID MISSISSIPPI VALLEY OVERNIGHT. AN UPPER LEVEL CLOSED LOW WILL DEVELOP TO THE WEST DURING THE DAY ON SATURDAY.
1044 AM EDT FRI AUG 14 2015 CURRENTLY - THE KEYS ARE ON THE EXTREME WESTERN END OF THE ATLANTIC RIDGE.
138 PM EDT MON MAR 14 2016 A PRESSURE TROUGH IN THE FORECAST AREA THROUGH THIS EVENING WILL SHIFT EAST OF THE AREA OVERNIGHT.
255 PM CDT MON MAR 14 2016 Upper low elongating from srn IN into cntrl KY moving east away from the area.
250 PM EDT MON MAR 14 2016 AN UPPER TROUGH AND TWO WEAK AREAS OF LOW PRESSURE WILL DRIFT NORTHEAST ACROSS THE MID ATLANTIC REGION TONIGHT AND EARLY TUESDAY.
358 PM EDT MON MAR 14 2016 ONGOING SHOWERS AND STORMS CONTINUE TO THRIVE THIS AFTERNOON AHEAD OF AN UPPER LOW CHURNING ACROSS SOUTH-CENTRAL KENTUCKY. VEERING LOW LEVEL WINDS WILL PROVIDE FOR SOME LINGERING UPSLOPE SHOWERS ACROSS THE HIGHER TERRAIN. AREAS FARTHER SOUTH ALONG THE VIRGINIA BORDER AMID THE HIGHER TERRAIN WILL ALSO SEE A SHOT AT SOME RAINFALL GIVEN THE UPSLOPE MOTION IN PLACE. ISOLATED STORMS CERTAINLY A POTENTIAL ALONG/AHEAD OF A RESPECTABLE COLD FRONT SET TO CROSS THE REGION. THIS FEATURE BEING PUSHED ALONG WITH A 140 KNOT JET NOSING INTO THE UPPER OH VALLEY ALONG THE BASE OF A NEGATIVELY TILTED TROUGH. A STRONG CLOSED LOW SETS UP OVER THE UPPER PLAINS WITH THE BASE OF THE TROUGH SETTING UP ACROSS THE CENTRAL CONUS. WITH THE SOUTHERN JET STREAM BECOMING ACTIVE AND THE NORTHERN STREAM DISPLAYING A BLOCKING PATTERN.
326 PM EDT MON MAR 14 2016 A WAVE OF LOW PRESSURE WILL PUSH EASTWARD ACROSS THE REGION THROUGH TONIGHT AND OFFSHORE ON TUESDAY. HIGH PRESSURE WILL BRIEFLY BUILD IN TUESDAY NIGHT BEFORE SEVERAL WEAK WAVES OF LOW PRESSURE AND FRONTAL BOUNDARIES CROSS THE REGION LATER THIS WEEK.
However, this warmer weather will take a hit Tuesday as a cold front moves into the area, w/fropa at KMAF ~ 14Z.
THAT SHOULD COINCIDE WITH THE LOWEST TEMPS SEEN OVERNIGHT TONIGHT.
SHOULD SEE CONDITIONS IMPROVING AROUND 12Z IN THE WESTERN AREAS WITH IMPROVEMENTS SPREADING EAST WITH THE LOW THROUGH 15-18Z IN THE EASTERN AREAS. MORE ORGANIZED LOW AND WARM FRONT WILL THEN SLIDE THROUGH FROM WEST TO EAST LATER THIS AFTERNOON AND THIS EVENING BRINGING WITH IT A CHANCE OF SHOWERS AND THUNDERSTORMS. A COLD FRONT WILL SWING OUT OF THE AREA BY TUESDAY MORNING WITH A FEW LINGERING SHOWERS MAINLY EAST OF INTERSTATE 29. TEMPERATURES WILL ALSO BE MUCH COOLER THAN RECENT DAYS. TOPPING OUT IN THE LOWER TO MID 50S.
A WEAK COLD FRONT IS TRAVERSING SOUTH CENTRAL FLORIDA AND THE LAKE OKEECHOBEE REGION THIS AFTERNOON. THE FOG SHOULD DISAPPEAR SHORTLY AFTER SUNRISE WITH ATLANTIC HIGH PRESSURE ATTEMPTING TO BUILD BACK IN OVER THE REGION THROUGH MID-WEEK.
TEMPERATURES ARE CLIMBING THROUGH THE LOWER TO MID 80S ALONG THE FLORIDA KEYS. A BROAD WESTERN ATLANTIC RIDGE IS ALIGNED ACROSS SOUTH FLORIDA AND OUR AREA.
BUT WITH SW WINDS IN THE LOW LEVELS THEY SHOULD STAY TO THE SOUTHEAST OF THE TAF SITE. MULTIPLE COLD FRONTS AND VARIOUS CHANCES OF RAIN. WHICH SHOULD SEND A COLD FRONT SOUTH THROUGH NORTH AND CENTRAL TEXAS ALSO ON TUESDAY. TEMPERATURES WILL ONLY FALL SLIGHTLY AS THE WEAK COLD FRONT MOVES THROUGH THE AREA TUESDAY.
With a cooler airmass in place, some of the higher valleys have a better chance of receiving some accumulating snow as well.
SNOW SHOWERS AND GUSTY WINDS WILL BE TAPERING OFF WEST TO EAST TONIGHT AND HIGH PRESSURE WILL BE BUILDING OUT OVER THE PACIFIC OCEAN TO BRING A SPELL OF DRIER WEATHER TO MOST OF THE GREAT BASIN THIS WEEK.
COLD FRONT HAS PUSHED EAST THRU THE ENTIRE CWA WITH SCATTERED SHOWERS NEAR THE DAKOTAS BORDER AS OF 1930Z.
319 PM PDT MON MAR 14 2016 Confidence still high in a drier and warmer week.
WITH THE NEAR SHORE WATER TEMPERATURES REMAINING IN THE MID-60S WE COULD SEE ANOTHER AREA OF SEA FOG DEVELOP AND PUSH INLAND AS WARMER DEWPOINTS MOVE OVER THE COOLER WATERS. SHOULD END UP IN THE LOW TO MID-60S AWAY FROM THE COAST. SOUTHERLY WINDS WILL BACK TOWARDS THE SOUTHEAST ALONG THE COASTAL BEND KEEPING THEM COOLER AS THE WEAK COLD FRONT MOVES CLOSER TO THE REGION FROM THE NORTH-NORTHWEST. COULD SEE A HEAT/PRE-FRONTAL TROUGH DEVELOP ACROSS THE RIO GRANDE PLAINS TOMORROW AFTERNOON ALLOWING THE WINDS TO BECOME LIGHT AND VARIABLE BEFORE VEERING TOWARDS THE NORTHEAST LATE IN THE DAY.
UPPER LEVEL TROUGH MOVING INTO THE SOUTHERN APPALACHIAN REGION GENERALLY ON SCHEDULE. BEST INSTABILITY MAINLY NORTH OF I-40 WHERE PLACED SOME THUNDER IN THE FORECAST AT TRI LATER IN THE DAY IN CONCERT WITH THE PROJECTED MOVEMENT OF THE UPPER LOW. THE LOWER CEILING MAY HANG ON LONGER AT TRI BUT SHOULD IMPROVE TO VFR BY MID MORNING TUESDAY.
234 PM EDT MON MAR 14 2016 A PRESSURE TROUGH IN THE FORECAST AREA THROUGH THIS EVENING WILL SHIFT EAST OF THE AREA OVERNIGHT.
winds should begin to shift more southwest to west across Eastern Oklahoma and by late Tuesday morning for Northwest Arkansas as a dry cold front approaches from the northwest. The remaining locations still reporting low visibilities are within the river/creek valleys in parts of Northeast Oklahoma and also parts of the higher terrain locations of far Northwest Arkansas.
A BACKDOOR FRONT MAY BRING COOLER TEMPERATURES TO THE AREA FOR THE WEEKEND. WARM AND DRY WEATHER WILL PREVAIL FOR THE WEEK AHEAD AS A BLOCKING PATTERN SETS UP OVER THE NORTHERN PLAINS/GREAT LAKES REGION. TEMPERATURES IN THE LOWLANDS WILL RANGE FROM THE UPPER 70S TO LOWER 80S.
TMRW WILL BE PRETTY MUCH A CARBON COPY OF TODAY AND A BIT WARMER AS ANOTHER WEAK BOUNDARY APPROACHES THE REGION FROM THE NORTHWEST.
103 PM EDT MON MAR 14 2016 INITIAL BAND OF SHOWERS CURRENTLY MAKING HEADWAY TOWARD INTERSTATE 75 AHEAD OF A WOUND-UP UPPER LOW SPINNING ACROSS NORTH-CENTRAL TENNESSEE. UPPER LOW CHURNING THROUGH NORTHWEST TENNESSEE WILL SLIDE INTO EASTERN KENTUCKY BY EARLY THIS AFTERNOON. AS A LARGE RIDGE OF HIGH PRESSURE BUILDS ACROSS THE SOUTHERN AND SOUTHEASTERN CONUS AND WINDS SHIFT BACK TO A SOUTHERLY DIRECTION. THIS FEATURE BEING PUSHED ALONG WITH A 140 KNOT JET NOSING INTO THE UPPER OH VALLEY ALONG THE BASE OF A NEGATIVELY TILTED TROUGH. A STRONG CLOSED LOW SETS UP OVER THE UPPER PLAINS WITH THE BASE OF THE TROUGH SETTING UP ACROSS THE CENTRAL CONUS. WITH THE SOUTHERN JET STREAM BECOMING ACTIVE AND THE NORTHERN STREAM DISPLAYING A BLOCKING PATTERN.
WINDS WILL BECOME NORTHWESTERLY AND GUSTY BEHIND A COLD FRONT PASSAGE TUESDAY MORNING. A COLD FRONT WILL THEN MOVE SEWD ACROSS THE TAF SITES LATE TONIGHT. /ISSUED 543 AM CDT MON MAR 14 2016/ WITH THE UPPER LEVEL TROUGH OFF TO THE EAST. AS ANOTHER NEGATIVELY TILTED TROUGH DIGS ACROSS THE NORTHERN PLAINS.
238 PM PDT MON MAR 14 2016 Strong gusty winds continued this afternoon but are expected to subside tonight as high pressure moves into the region. Strong gusty winds continued across the region today associated with cold front nearby and enhanced pressure gradient. Winds will drop off rather quickly tonight as gradient relaxes with incoming high pressure.
524 PM EDT MON MAR 14 2016 A PRESSURE TROUGH IN THE FORECAST AREA THROUGH THIS EVENING WILL SHIFT EAST OF THE AREA OVERNIGHT.
342 PM MDT MON MAR 14 2016 AN UPPER TROUGH OVER THE NORTHERN ROCKIES WILL PASS OVER THE AREA TONIGHT WITH A 120KT JET AT THE BASE OF THE TROUGH SPREAD OVER THE STATE. THIS WILL LIMIT HOW COLD TONIGHTS TEMPERATURES GET EVEN THOUGH COLDER AIR IS PUSHING DOWN WITH THIS TROUGH. IT SHOULD BE DRY AND COOLER BUT AGAIN WITH LOW HUMIDITY AND STRONG NORTHWEST WINDS TO BRING ANOTHER HIGH FIRE DANGER DAY TO THE EASTERN PLAINS. LOOK FOR TEMPERATURES TO BE 10 TO 15 DEGREES COOLER ACROSS THE AREA COMPARED TO TODAY.
1215 PM CDT MON MAR 14 2016 AREA CURRENTLY BETWEEN A COUPLE MID-LEVEL TROUGHS AND ASSOCIATED RAIN SHOWERS. EXPECTING THIS FOG TO GET PROGRESSIVELY DENSE WITH LIGHT WIND FLOW AND CONTINUED SLOW COOLING OF THE LOWER BOUNDARY LAYER. TEMPERATURES EARLY THIS MORNING RANGED FROM THE UPPER 30S ACROSS NORTH CENTRAL WI TO THE LOWER/MIDDLE 40S ELSEWHERE ACROSS THE AREA. WILL CONTINUE TO SEE A SLOW EASTWARD PROGRESSION OF OF THAT TROUGH OVER CENTRAL MN TODAY WITH WEAK UPWARD MOTION. TUESDAY LOOKS INTERESTING AS THE COLD FRONT PUNCHES THROUGH DURING PEAK HEATING IN THE AFTERNOON.
/ISSUED 405 AM CDT MON MAR 14 2016/ WATER VAPOR SATELLITE TRENDS THIS MORNING PLACE A COMPACT UPPER LEVEL LOW OVER NORTHEAST ARKANSAS. AT THE SURFACE A COLD FRONT EXTENDS ACROSS PORTIONS OF CENTRAL ARKANSAS AND NORTHERN LOUISIANA. THE UPPER LEVEL OVER NORTHEAST ARKANSAS WILL WEAKEN AND BECOME AN OPEN MID LEVEL TROUGH AS IT MOVES INTO THE OHIO VALLEY. A FEW LINGERING RAIN SHOWERS POSSIBLE ACROSS PORTIONS OF WEST TENNESSEE INTO THE AFTERNOON ON THE BACK SIDE OF THE UPPER LEVEL LOW. RAIN FREE CONDITIONS ARE EXPECTED TO RETURN BEHIND THIS UPPER LEVEL LOW INTO TUESDAY. WRF/GFS/ECMWF MODELS INDICATE A WEAK COLD FRONT WILL MOVE THROUGH THE MID SOUTH TUESDAY NIGHT.
AFTERNOON TEMPERATURES TODAY HAVE CLIMBED WELL INTO THE LOW AND UPPER 80S AS EXPECTED SO FAR. VALUES WILL TOP OFF IN THE LOW 90S AND UPPER 80S ACROSS THE REGION OVER THE NEXT COUPLE OF HOURS. WILL LOOK FOR A NEAR REPEAT TOMORROW BUT WITH TEMPERATURES ABOUT 1-2F DEGREES COOLER AS H925 AND H850 TEMPS COOL SLIGHTLY. THE LOWER CLOUDS AND MORE DENSE FOG ARE EXPECTED TO RESIDE PRIMARILY ALONG THE TEXAS COAST.
106 PM EDT MON MAR 14 2016 WEAK LOW PRESSURE MOVING TOWARD THE OHIO VALLEY WILL PUSH AN UPPER LEVEL TROUGH THROUGH THE AREA LATE THIS AFTERNOON INTO TONIGHT.
AN UPPER LOW WAS CURRENTLY LOCATED NEAR NASHVILLE. MOST OF THE UPPER LIFT ASSOCIATED WITH THE UPPER LOW HAS SHIFTED INTO EASTERN TENNESSEE AND NORTHERN GEORGIA. PRECIPITABLE WATER VALUES SOUTH OF THE UPPER LOW ARE LESS THAN ONE INCH. THEN WEAKEN CONSIDERABLY BY SUNSET AS A LOW LEVEL RIDGE BUILDS OVER THE AREA. DRIER AND WARMER LOW LEVEL AIR WILL ADVECT INTO THE REGION FROM THE WEST TONIGHT AND TUESDAY.
524 PM EDT MON MAR 14 2016 AN UPPER TROUGH AND TWO WEAK AREAS OF LOW PRESSURE WILL DRIFT NORTHEAST ACROSS THE MID ATLANTIC REGION TONIGHT AND EARLY TUESDAY.
SHORT WAVE TROUGH SHIFTING EAST ACROSS THE APPALACHIANS PRODUCING SOME CONVECTION. A COLD FRONT WILL BE APPROACHING THE AREA TO START THE EXTENDED PORTIONS OF THE FORECAST AS AN UPPER LEVEL LOW MOVES ACROSS THE MID- MISSISSIPPI RIVER VALLEY INTO THE GREAT LAKES. WITH MUCH WARMER THAN AVERAGE TEMPERATURES AND DEWPOINTS.
/ISSUED 637 AM CDT MON MAR 14 2016/ DRIER AIR HAS MOVED IN BEHIND A COLD FRONT AND FLYING CONDITIONS WILL BE VFR AT ALL TERMINALS THROUGH THIS TAF PERIOD. WE DO EXPECT A WEAK COLD FRONT TO MOVE INTO THE REGION ON TUESDAY. THE COLD FRONT WILL NOT IMPACT TEMPERATURES GREATLY.
141 PM EDT MON MAR 14 2016 STEADIER SHOWERS WILL BE TAPERING OFF A MORE HIT AND MISS VARIETY AS A LOW PRESSURE SYSTEM EXITS TO THE EAST.
315 PM EDT MON MAR 14 2016 A WEAK AREA OF LOW PRESSURE WILL MOVE NORTHEAST ACROSS THE AREA THIS EVENING.
GUSTY WINDS WILL PERSIST THROUGH THE FAVORED PASSES AND CANYONS THROUGH THIS EVENING AS THE LOW PRESSURE SYSTEM EXITS THE REGION. A RIDGE OF HIGH PRESSURE WILL BUILD AND BRING DRY AND WARMER WEATHER.
406 PM EDT MON MAR 14 2016 LOW PRESSURE AND THUNDERSTORMS WILL MOVE EAST TONIGHT. A WEAK RIDGE OF HIGH PRESSURE IS EXPECTED TO PROVIDE DRY WEATHER ON TUESDAY. AN OCCLUDED FRONT EXTENDING FROM GREAT LAKES LOW PRESSURE IS FORECAST TO BRING MORE SHOWERS AND THUNDERSTORMS TUESDAY NIGHT MAINLY TO NORTHERN LOCATIONS.
311 PM EDT MON MAR 14 2016 HIGH PRESSURE BOTH SURFACE AND ALOFT REMAINS IN CONTROL OF THE LOCAL PATTERN WITH A STRONG WEST TO SOUTHWEST SURFACE FLOW. EVEN THE BEACHES WILL REACH THE LOWER 80S DUE TO OFFSHORE FLOW WHICH SHOULD BE JUST STRONG ENOUGH TO KEEP THE SEABREEZE JUST OFFSHORE.
1126 AM MDT MON MAR 14 2016 THE MAIN THING TO WATCH FOR TODAY WILL BE THE POTENTIAL FOR STRONG WINDS SPREADING INTO THE LOWER ELEVATIONS. ALONG WITH A PASSING BAROCLINIC BAND AND COLD FRONT WILL HELP INCREASE SNOW COVERAGE OVER OUR SNOWY AND SIERRA MADRE RANGES.
328 PM EDT MON MAR 14 2016 LOW PRESSURE WILL SLOWLY MOVE NORTHEAST UP THE COAST TONIGHT THROUGH TUESDAY. LOW PRESSURE WILL GRADUALLY MOVE EAST INTO THE MARITIMES TUESDAY NIGHT.
It will shift the winds to the north and bring slightly cooler temperatures to the region on Tuesday. 26 (Tuesday Night through next Monday) Quasi-zonal flow aloft will be over our area during the middle to late part of this week, with a broad upper trough over the northern and central U.
HIGH PRESSURE AND WEAK OFFSHORE FLOW WILL BRING DRY AND WARMER DAYS FOR THE REMAINDER OF THE WEEK.
650 PM EDT MON MAR 14 2016 A WEAK AREA OF LOW PRESSURE WILL MOVE NORTHEAST ACROSS THE AREA THIS EVENING.
331 PM EDT MON MAR 14 2016 LOW PRESSURE MOVING INTO THE OHIO VALLEY WILL BRING SHOWERS AND A FEW THUNDERSTORMS MAINLY SOUTH AND EAST OF INTERSTATE 69 INTO EARLY EVENING. WARM FRONT WILL QUICKLY MOVE NORTH ACROSS MOST IF NOT ALL THE AREA TUESDAY AFTERNOON INTO EARLY TUESDAY EVENING. 12Z GUIDANCE SIMILAR IN KIND TO PRIOR SOLUTIONS W/WW ELONGATION OF MID LVL TROUGH AXIS AS SPRTG JET STREAK HEADS THROUGH NEW ENGLAND THU NIGHT. THIS LEAVES BEHIND SOME VESTIGE OF CYCLONIC FLW ALOFT AS MID LVL TROUGH SETTLES SOUTH INTO FRI BFR REINVIGORATING INTO SAT AS WHATS LEFT SPINS OUT EWD ACRS THE OH VALLEY. INCREASED MIXING IS EXPECTED TUESDAY MORNING AS WARM FRONT MOVES THROUGH THE AREA AND ALLOWS TREND TO MVFR CIGS AT KFWA AND AT LEAST SOME IMPROVEMENT AT KSBN.
WV IMAGERY INDICATED WLY/NWLY UPPER LEVEL FLOW ACROSS THE SWRN STATES AS A TROF SWUNG THROUGH THE PAC NW. AS THE AFOREMENTIONED TROF DEEPENS AND PUSHES THROUGH THE NRN PLAINS AND INTO THE GREAT LAKES AREA BY MID-WEEK. AN UPPER RIDGE WILL AMPLIFY OFF THE WEST COAST.
UPPER TROUGH AXIS SWINGS ACROSS THE AREA EARLY THIS EVENING THROUGH THE OVERNIGHT BRINGING AN INCREASE IN CLOUDINESS AND A SLIGHT CHANCE FOR SHOWERS/THUNDERSTORMS TO THE AREA. THIS IS AHEAD OF A COLD FRONT THAT MOVES IN BEHIND THE TROUGH AXIS. LOW TEMPERATURES IN THE LOW 30S TO LOW 40S. ANOTHER UPPER TROUGH AXIS MOVES THROUGH BRINGING AN INCREASE IN CLOUDINESS AND A SLIGHT CHANCE FOR SHOWERS FROM TRENTON TO NORTON AND ALMENA. HIGH TEMPERATURES WILL BE ABOUT 20 DEGREES COOLER COMPARED TO MONDAY WITH LOW TO MID 50S IN FAR EASTERN COLORADO.
317 PM EDT MON MAR 14 2016 AN UPPER TROUGH AND TWO WEAK AREAS OF LOW PRESSURE WILL DRIFT NORTHEAST ACROSS THE MID ATLANTIC REGION TONIGHT AND EARLY TUESDAY.
EXPECTING SNOWFALL TO PICK UP OVER THE MOUNTAIN AREAS LATE THIS AFTERNOON INTO THE EVENING HOURS AS THE COLD FRONT APPROACHES AND MOVES THROUGH THE REGION THIS EVENING.
302 PM EDT MON MAR 14 2016 A WARM FRONT WILL LIFT THROUGH THE REGION TONIGHT WITH WIDESPREAD LIGHT RAIN OR MIXED PRECIPITATION TRANSITIONING TO SCATTERED RAIN SHOWERS. ELONGATED LOW PRESSURE WILL THEN REMAIN ACROSS THE GREAT LAKES EAST INTO NEW ENGLAND THROUGH MUCH OF THE WORK WEEK WITH VARIABLE CLOUDS AND PERIODIC SHOWERY WEATHER. THE FORECAST REMAINS GENERALLY ON TRACK FOR TONIGHT AS A WARM FRONTAL ZONE SLOWLY LIFTS THROUGH THE AREA. HIGH TEMPERATURES WARMER THAN TODAY GIVEN CONTINUED LIGHT SOUTHERLY FLOW/WARM THERMAL ADVECTION (40S TO AROUND 50).
RAIN AND CLOUD COVER HAS KEPT TEMPERATURES FROM RISING MUCH SO FAR, WITH EVERYONE REMAINING IN THE LOW-MID 60S.
After afternoon highs in the lower to mid 80s, low overnight will only drop to the upper 50s to lower 60s.
WITH PRECIPITABLE H2O VALUES ON THE LOW SIDE FEEL ANY PCPN WILL BE ORIENTED CLOSE TO THE BOUNDARY. RA WILL CONTINUE TO SPREAD EAST IN THE AM WITH BOUNDARY HANGING UP OVER THE EASTERN FA IN THE AFTERNOON AS UPPER LOW ORGANIZES WITH SHARP SHEAR AXIS BISECTING THE FA FROM NW-SE. TEMPERATURES WILL BE MILD AGAIN TUESDAY WITH COOLING ON BACK SIDE OF BOUNDARY TUESDAY NIGHT WITH ALL BUT DVL BASIN REMAINING AT OR ABOVE FREEZING.
TODAY THROUGH TUESDAY NIGHT CURRENT SURFACE MAP SHOWS TROF OF LOW PRESSURE ACROSS MONTANA INTO WYOMING. WITH TROF/DRY LINE PUSHING THROUGH WESTERN SOUTH DAKOTA. LOW LIFTS NORTHWARD LATE THIS AFTERNOON/EVENING WITH COLD FRONT RAPIDLY MOVING THROUGH NORTHEAST WYOMING/WESTERN SOUTH DAKOTA. A PERIOD OF STRONGER NORTHWEST WINDS WILL DEVELOP BEHIND THE COLD FRONT WITH 3-6MB/3HR PRESSURE RISES. UPPER LOW CUTS OFF ACROSS SOUTHERN SASKATCHEWAN LATE TONIGHT/TUESDAY. WITH COOLER AND WINDY CONDITIONS.
/ISSUED 256 AM EDT FRI AUG 7 2015/ DRY LAYER OVER SOUTH FLORIDA WILL CONTINUE TODAY AND SATURDAY AS HIGH PRESSURE DOMINATES. COLD FRONT TO THE NORTH WILL BRING BETTER RAIN CHANCES TO NORTHERN FLORIDA DURING THIS TIME.
WILL INCREASE POPS TODAY ACROSS MUCH OF THE AREA DUE TO THE HIGHLY UNSTABLE ATMOSPHERE AND U/L DYNAMICS APPROACHING THE REGION.
MAINLY IN OUR FAR SOUTHEASTERN COUNTIES ALONG AND SOUTH OF THE HIGHWAY CORRIDOR. THE LOW WILL GRADUALLY EXIT OFF TO THE EAST TODAY. BETTER CLEARING WILL TAKE PLACE TONIGHT AS UPPER LEVEL RIDGING ENSUES. THE PERIOD BEGINS WITH UPPER LEVEL HIGH RETROGRADING EAST IN THE ARKLATEX REGION. THIS WILL BRING HEIGHT RISES TO THE REGION AND TRANSLATE TO WARMER AND MORE HUMID AIR AT THE SURFACE.
CLOUD COVER BEHIND THE FRONT AND BACK SIDE OF THE LOW IS ALSO EXPANDING THIS MORNING.
LATEST AVAILABLE IR IMAGERY OVERLAID WITH MODEL STREAMLINE ANALYSIS AS OF 900 AM DEPICT THE CENTER OF DEEP AND WARM MIDDLE AND UPPER RIDGING CENTERED OVER CENTRAL TEXAS. WEAK UPPER RIDGING IS LOCATED OVER THE EASTERN GULF OF MEXICO AND CENTRAL FLORIDA. AT THE SURFACE AND IN THE LOWER TO MID LEVELS. DETAIL WEAK LARGE SCALE SURFACE RIDGING IN PLACE AT 28 NORTH 78 WEST WESTWARD TO ACROSS CENTRAL FLORIDA AND INTO THE CENTRAL GULF OF MEXICO. MID AND UPPER RIDGING WILL REMAIN IN PLACE. AS WEAK SURFACE RIDGING NOW ACROSS THE SOUTH FLORIDA PENINSULA SLIDES SOUTHWARDS. TEMPERATURES ON TRACK TO REACH INTO THE LOWER 90S AGAIN. THE LOW TEMPERATURE IN KEY WEST WAS 70 DEGREES.
1010 AM EDT FRI AUG 7 2015 HIGH PRESSURE WILL DOMINATE OUR WEATHER THROUGH THE WEEKEND BRINGING DRY CONDITIONS AND COMFORTABLE TEMPERATURES.
WEAK HIGH PRESSURE WILL REMAIN IN CONTROL OVER OUR AREA THROUGH THE ENTIRE SHORT TERM PERIOD.
WEAK HIGH PRESSURE ALOFT WILL KEEP THE REGION DRY AND GENERALLY STABLE.