Aikyam-Lab/Synoptic-Bench huggingface dataset:
651 PM EDT WED APR 13 2016 HIGH PRESSURE WILL DOMINATE THE OHIO VALLEY AND LOWER GREAT LAKES INTO THE WEEKEND. THE HIGH TO OUR NORTHEAST OVER QUEBEC WILL EVENTUALLY DRIFT SOUTH TO NEW ENGLAND. THIS WILL HAVE THE EFFECT OF TURNING WINDS FROM EASTERLY TO MORE SOUTHEAST AND SOUTHERLY FOR THE WEEKEND AS AN UPPER RIDGE BUILDS ACROSS THE EASTERN LAKES AND OHIO VALLEY.
153 PM EDT WED APR 13 2016 HIGH PRESSURE CENTERED TO OUR NORTH AND NORTHEAST. JUST MADE A QUICK ADJUSTMENT TO TEMPS AS THEY ARE RUNNING SLIGHTLY WARMER THAN FORECASTED. HAVE ALLOWED FOR THE FROST/FREEZE HEADLINES TO EXPIRE THIS MORNING AS WE CONTINUE TO WARM ABOVE FREEZING AT ALL LOCATIONS. TONIGHT SHOULD BE WARMER THAN CURRENT MORNING LOWS. BUT STILL COULD BE FLIRTING WITH POTENTIAL FROST ACROSS THE NORTHERN CWA WITH TEMPS IN THE LOW TO MID 30S.
POSITIVE TILT UPR LVL S/W RIDGE WILL MAKE SLOW EASTWARD PROGRESS ACROSS COLORADO TODAY. LOCAL AIRMASS WILL WARM AND DRY OUT AS MID- LEVEL SUBSIDENCE INCREASES WITH PASSAGE OF THE RIDGE. COVERAGE WILL BE NOTICABLY LESS THAN YESTERDAY AND CONFINED MAINLY TO THE HIGHER TERRAIN. AND MOSTLY 50S IN THE HIGH COUNTRY WITH A SPRINKLING OF LOWER 60S ON THE VALLEY FLOORS.
320 PM CDT WED APR 13 2016 HIGH PRESSURE ANCHORED OVER THE GREAT LAKES RESULTING IN WEAK RETURN FLOW. THIS AIR MASS WILL DOMINATE OUR CONDITIONS AHEAD OF A WEAK UPPER TROF THAT MOVES FROM CENTRAL MONTANA INTO SASKATCHEWAN TONIGHT.
1205 PM CDT WED APR 13 2016 FOR 18Z TAFS /ISSUED 1048 AM CDT WED APR 13 2016/ A COUPLE OF WEAK CONVERGENCE BOUNDARIES CAN BE SEEN IN SURFACE ANALYSIS SOUTH OF A 1034 HIGH PRESSURE CENTERED OVER SOUTHEASTERN CANADA THIS MORNING. WITH SOME BREAKS IN THE HIGHS CLOUDS BEING HINTED AT BY MODELS AROUND NOON OR 1 PM IN NW ALABAMA.
/ISSUED 1125 AM CDT WED APR 13 2016/ THICK MID AND HIGH CLOUDS HAVE SPREAD ACROSS THE AS AN UPPER LEVEL DISTURBANCE MOVES ALONG THE GULF COAST AND A WEAK UPPER LOW TRACKS EAST ACROSS THE SOUTHERN PLAINS. HAVE INTRODUCED 20 POPS ACROSS EASTERN ARKANSAS AS AN UPPER LEVEL LOW PRESSURE WILL MOVE INTO NORTHWEST ARKANSAS THIS AFTERNOON. WILL CARRY LIKELY POPS FOR THESE AREAS WITH CHANCE POPS ELSEWHERE AS THE UPPER LEVEL LOW BEGINS TO MOVE INTO THE MIDSOUTH. THE UPPER LEVEL LOW WILL MEANDER OVER THE MIDSOUTH THURSDAY NIGHT AS THE LOW BECOMES TRAPPED UNDERNEATH A BUILDING UPPER RIDGE.
A WEAK AREA OF LOW PRESSURE WAS MOVING ALONG THE CENTRAL GULF COAST.
426 PM EDT WED APR 13 2016 HIGH PRESSURE WILL GRADUALLY BUILD EAST TOWARD THE REGION THROUGH THURSDAY.
ISOLATED SHOWERS WILL REMAIN POSSIBLE THROUGH THE OVERNIGHT PERIOD AS SMALLER DISTURBANCES ROTATE ACROSS THE REGION ASSOCIATED WITH AN UPPER LOW OVER OKLAHOMA SLOWLY MOVING EAST.
LIGHT RAIN WILL SLOWLY END ACROSS THE AREA THIS AFTERNOON WITH THE HIGHEST CHANCES SOUTHEAST OF I-44.
358 PM EDT WED APR 13 2016 HIGH PRESSURE WILL BUILD OVER THE REGION THROUGH THE END OF THE WEEK. 5H TROF SWINGING ACROSS THE REGION WILL MAKE SOME HIGH CLOUDS FOR THE LATE AFTN AND EVENING. THOSE CLOUDS WILL SLIDE S/E CONCURRENTLY WITH THE BASE OF THE TROF. BLOCKING PATTERN ALOFT WILL ALLOW A BIG HIGH PRESSURE AREA TO SETTLE OVER THE NERN THIRD OF THE CONUS.
High pressure aloft will be the dominant weather feature for the short term. However there is a cut off low that tries to undercut the upper high near the confluence of the Ohio and Mississippi Rivers.
TROUGH WILL BRING MORE SCATTERED AFTERNOON SHOWERS AND ISOLATED THUNDERSTORMS.
TEMPERATURES WILL THEN WARM THROUGH THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION. /ISSUED 451 AM PDT WED APR 13 2016/ NEAR ZONAL FLOW CONTINUES ACROSS CALIFORNIA AS A DEVELOPING LOW PRESSURE SYSTEM TRACKS TOWARD THE PACIFIC NORTHWEST COAST. WHILE A SWATH OF HIGH CLOUDS ROTATES UNDERNEATH THE LOW AND PUSHES INLAND OVER CALIFORNIA. AS THE LOW NEARS THE COAST BY LATE TONIGHT.
322 PM EDT WED APR 13 2016 A RIDGE OF HIGH PRESSURE AT THE SURFACE AND ALOFT WILL REMAIN OVER THE NORTH COUNTRY THROUGH THIS WEEKEND.
WITH LITTLE AVAILABLE MOISTURE AND DOMINATING SUBSIDENCE IN THE LARGE SCALE RIDGING THIS WAVE WILL RESULT IN LITTLE MORE THAN SOME HIGH AND MID LEVEL CLOUD COVER ACROSS THE REGION. EXPECT A FAIRLY CLOUDY EVENING ACROSS THE REGION THEN SKIES WILL CLEAR FROM WEST TO EAST TONIGHT AS THE TROUGH TRACKS TO OUR EAST. THE HIGH PRESSURE WILL MAINTAIN NEARLY CLEAR SKIES ON THURSDAY AND THE ABUNDANT SUNSHINE WILL BOOST THE AFTERNOON TEMPERATURES TO HIGHS IN THE UPPER 40S TO THE MID 50S. A MID LATITUDE BLOCKING PATTERN CENTERED OVER THE EASTERN HALF OF THE COUNTRY WILL GUARANTEE EXCELLENT WEATHER ACROSS OUR FORECAST AREA THROUGH MUCH.
1236 PM CDT WED APR 13 2016 WENT A HEAD A RAISED TEMPS A COUPLE MORE DEGREES FOR THE VALLEY AND WESTERN ZONES OF THE FA AS TEMPS ARE IN THE LOW 50S AS OF NOON. 500MB RIDGE BUILDS INTO THE AREA TODAY SO EXPECTING LOTS OF SUN. HIGH TEMPS LOOK TO BE AT LEAST 10F WARMER THAN YESTERDAY. ANOTHER LOW PRESSURE AREA WILL MOVE INTO THE WESTERN DAKOTAS THU NIGHT. THIS LOW WILL SLOWLY MOVE EAST ON FRI.
307 PM EDT WED APR 13 2016 HIGH PRESSURE WILL REMAIN JUST TO THE NORTH THROUGH THE WEEKEND.
PREDOMINANT UPPER LEVEL RIDGING EXTENDS INTO THE GREAT LAKES REGION WHILE A CLOSED UPPER LOW SITS OVER THE SOUTHEAST U. THIS UPPER LOW WILL MOVE EASTWARD.
LAPS CAPE DATA INDICATES THAT THE ATMS IS STABILIZING TO THE NORTH OF THE FRONT AND KBRO RADAR DATA SUPPORTS THIS SHOWING ONLY SOME LIGHT TO MODERATE SHOWERS MAINLY NEAR THE LOWER TX COASTLINE. THE LIGHT NORTHERLY FLOW WILL NOT LIKELY DECREASE THE MOISTURE AMOUNTS IN THE LOWER LEVELS. MORE SIGNIFICANT DRYING WILL OCCUR AT THE LOW LEVELS OF THE ATMS SO EXPECT A RETURN OF VFR CONDITIONS LATER IN THE DAY THURS.
545 PM CDT WED APR 13 2016 VERY LOW CONFIDENCE FORECAST FOR OUR TERMINAL LOCATIONS OVER THE NEXT 24 HOURS AND THIS IS DUE IN PART TO A STUBBORN AREA OF LOW PRESSURE ALOFT WHICH IS CENTERED ACROSS EASTERN OKLAHOMA AND WESTERN ARKANSAS. TSTM CHANCES WILL CONTINUE THROUGH MID MORNING BEFORE WE BEGIN TO LOSE THE EFFECTS OF THE UPPER LEVEL TROUGH DURING THE AFTERNOON. /ISSUED 328 PM CDT WED APR 13 2016/ UPPER LOW CONTINUES TO CHURN OVER ERN OK THIS AFTERNOON PER THE WV IMAGERY.
258 PM CDT WED APR 13 2016 LATEST WATER VAPOR IMAGERY SHOWS A BROAD UPPER LEVEL LOW SPINNING FROM THE SOUTHERN PLAINS INTO THE OZARKS. DISTURBANCE ROTATING AROUND THE UPPER LEVEL LOW.
601 PM EDT WED APR 13 2016 HIGH PRESSURE WILL GRADUALLY BUILD EAST TOWARD THE REGION THROUGH THURSDAY.
A FEW SCATTERED SHWRS/ISOLATED TSTMS ARE POSSIBLE AS AN UPPER TROUGH MOVES ACROSS THE SOUTHERN PLAINS. RAIN CHANCES SHOULD DIMINISH FROM WEST TO EAST DURING THE OVERNIGHT HRS AS THE UPPER TROUGH AXIS MOVES EAST. CIGS WILL ONLY LIFT SLIGHTLY INTO THE IFR OR THE LOW END OF MVFR DURING THE LATE MORNING HRS OF THURSDAY. /ISSUED 1031 AM CDT WED APR 13 2016/ WV IMAGERY SHOWS UPPER LOW DRIFTING EWD ACROSS OK THIS MORNING. /ISSUED 441 AM CDT WED APR 13 2016/ UPPER LOW MOVG SLOWLY EAST ALONG RED RIVER VALLEY OF OK/TX.
RAINFALL ACROSS THE AREA AND THE INCREASED MOISTURE IN THE BOUNDARY LAYER WILL SET UP THE POTENTIAL FOR ANOTHER ROUND OF LOW CLOUDS AND FOG MAINLY FOR THE ROLLING PLAINS WITH A BIT OF UNCERTAINTY HOW FAR WEST THE LOW CLOUDS/FOG WILL DEVELOP. WILL KEEP THE LOW CLOUDS AND FOG LIMITED TO THE ROLLING PLAINS FOR NOW AND HAVE ADJUSTED GRIDS ACCORDINGLY. TEMPERATURES WILL ONCE AGAIN DEPEND ON HOW FAST ANY LOW CLOUDS WILL BURN OFF BUT EXPECT TO SEE HIGH TEMPERATURES ABOUT 5 TO 8 DEGREES WARMER THAN WE HAVE SEEN SO FAR THIS AFTERNOON.
248 PM EDT WED APR 13 2016 CONSENSUS AMONG THE GUIDANCE THAT THE GOA CYCLONE WILL CUT OFF OVER THE SOUTHWEST UNITED STATES THURSDAY NIGHT INTO THE WEEKEND. THIS WILL ELICIT CONSIDERABLE DOWNSTREAM HEIGHT RISES AND THE RATHER PROGRESSIVE RIDGE TRANSITING APPROACHING THE GREAT LAKES TODAY WILL BE FORCED TO AMPLIFY IN PLACE. HIGH PRESSURE WILL THEREFORE REMAIN IN CONTROL THIS AFTERNOON THROUGH THE NEXT SEVERAL DAYS.
328 PM CDT WED APR 13 2016 UPPER LOW CONTINUES TO CHURN OVER ERN OK THIS AFTERNOON PER THE WV IMAGERY.
700 PM EDT WED APR 13 2016 HIGH PRESSURE CENTERED OVER SOUTHERN QUEBEC WILL REMAIN NEARLY STATIONARY FOR THE NEXT FEW DAYS RESULTING IN CONTINUED FAIR WEATHER ACROSS OUR AREA WITH A WARMING TREND. LOWS TONIGHT WILL BE IN THE LOWER 30S WITH HIGHS THURSDAY RANGING FROM THE MID 50S OVER SOUTH CENTRAL MICHIGAN AND EXTREME NORTHWEST OHIO TO THE MID 60S WEST OF U.
242 PM CDT WED APR 13 2016 Weak upper level ridging will track over west Texas and southeast New Mexico through Thursday resulting in quiet weather. At the surface lee troughing will intensify with low level thermal ridging boosting temperatures to above normal values tonight through Thursday night.
535 PM EDT WED APR 13 2016 AVIATION THE RECENT COLD WEATHER PATTERN WILL FINALLY FLIP TO A MILD AND DRY PATTERN AS HIGH PRESSURE BUILDS OVER THE REGION.
649 PM EDT WED APR 13 2016 THE AVIATION SECTION HAS BEEN UPDATED BELOW HIGH PRESSURE WILL KEEP QUIET WEATHER OVER CENTRAL INDIANA THROUGH THE WEEKEND. HIGH PRESSURE OVER THE AREA WILL KEEP SKIES CLEAR AND WINDS LIGHT TONIGHT. THIS WILL ALLOW GOOD RADIATIONAL COOLING ONCE AGAIN AND EXPECT TO SEE LOWS DROP TO THE LOWER 30S NORTHEAST TO AROUND 40 IN THE SOUTH.
312 PM EDT WED APR 13 2016 HIGH PRESSURE CENTERED TO OUR NORTH AND NORTHEAST. SKIES WILL REMAIN MOSTLY CLEAR WITH HIGH PRESSURE AND RIDGING CEMENTED OVER THE REGION. AND ALTHOUGH IT WILL BE A BIT WARMER OVERNIGHT TONIGHT WE CAN STILL EXPECT AREAS OF FROST ACROSS THE NORTHERN HALF OF THE FORECAST AREA AND ALSO IN OUR SHELTERED VALLEY LOCATIONS.
Weak closed low in central Oklahoma at midday, with associated weak deformation zone continuing to spread cirrus into southern Kansas. Winds back more SE this afternoon, with decreasing cirrus and highs in the low to mid 70s. Windy and warmer. On Thursday stratus in north central and south central Kansas will erode during the early morning hours as a trough of low pressure at the surface deepens near the Colorado border.
AN UPPER LEVEL LOW WILL MOVE ACROSS OKLAHOMA AND ARKANSAS WITH MAIN DYNAMICS FROM THIS SYSTEM OVER THE GULF COAST STATES. ANOTHER LIMITING FACTOR FOR PRECIPITATION WILL BE PERSISTENT SURFACE RIDGING ACROSS THE CAROLINAS INTO THE GEORGIA AND ALABAMA KEEPING LOW-LEVEL MOISTURE LIMITED OVER THE SOUTHERN APPALACHIANS. SURFACE RIDGING WILL KEEP LOW-LEVEL MOISTURE QUITE DRY OVER VIRGINIA AND NORTHERN TENNESSEE. AT THE BEGINNING OF THE PERIOD THE WEATHER IS SLIGHTLY UNSETTLED WITH A WEAK UPPER TROUGH AND LOW CENTER TO OUR WEST.
256 PM CDT WED APR 13 2016 18Z SFC DATA HAS HIGH PRESSURE OVER THE GREAT LAKES WITH A WEAK LOW IN SOUTHEAST COLORADO. QUIET AND DRY CONDITIONS WILL BE SEEN ACROSS THE AREA TONIGHT AND THURSDAY AS HIGH PRESSURE REMAINS OVER THE GREAT LAKES.
TEMPERATURES WILL THEN WARM THROUGH THE WEEKEND AS HIGH PRESSURE BUILDS OVER THE REGION. SOME MID TO HIGH CLOUDS ALSO MOVED THROUGH ACCOMPANYING THE WEAK SYSTEM AHEAD OF THE PARENT TROUGH CURRENTLY LOCATED AROUND 45N 135W OVER THE EASTERN PACIFIC OCEAN. WHERE THE CLOUD BANK PERSISTED TEMPERATURES WERE COOLER DUE TO THE MINIMAL SOLAR INSOLATION.
700 PM EDT WED APR 13 2016 HIGH PRESSURE CENTERED TO OUR NORTH AND NORTHEAST. SKIES WILL REMAIN MOSTLY CLEAR WITH HIGH PRESSURE AND RIDGING CEMENTED OVER THE REGION. AND ALTHOUGH IT WILL BE A BIT WARMER OVERNIGHT TONIGHT WE CAN STILL EXPECT AREAS OF FROST ACROSS THE NORTHERN HALF OF THE FORECAST AREA AND ALSO IN OUR SHELTERED VALLEY LOCATIONS.
/ISSUED 1022 AM EDT WED APR 13 2016/ HIGH PRESSURE IS RIDGING ACROSS SOUTH FLORIDA WITH A COLD FRONT JUST PUSHING INTO LEVY COUNTY THIS MORNING. A FRONT WILL CONTINUE TO SETTLE SOUTH ACROSS THE WATERS THROUGH THE DAY TODAY AS HIGH PRESSURE RIDGES ACROSS SOUTH FLORIDA. WITH RAIN CHANCES CONTINUING THROUGH THE END OF THE WEEK AS THE TROUGH LINGERS ACROSS THE AREA. HIGH PRESSURE WILL THEN BUILD INTO THE AREA AND CLEAR OUT THE AREA.
A COLD FRONT WILL SINK SOUTH OF THE AREA THIS MORNING. HIGH PRESSURE WILL BUILD IN FROM THE NORTH OVER THE NEXT SEVERAL DAYS KEEPING CONDITIONS COOL AND SETTLED. THE RIDGE WILL SHIFT EASTWARD OVER THE MID ATLANTIC. HIGHS TODAY IN THE LOW TO MID 60S. A STRONG UPPER RIDGE WILL FORM OVER THE MIDWESTERN STATES WHICH WILL HELP TO SHARPEN UP AN UPPER LEVEL TROUGH JUST OFF THE CAROLINA COAST. HIGH PRESSURE CENTERED OVER QUEBEC WILL BUILD SOUTH INTO THE CAROLINAS AND KEEP ALL PRECIPITATION ASSOCIATED WITH THE EXITING FRONT PINNED SOUTH OF THE FORECAST AREA. A COUPLE DEGREES WARMER FOR TEMPERATURES.
219 PM PDT WED APR 13 2016 Breezy Winds will continue this evening and Thursday as a sharp cold front moves Thursday morning. Only modest rain and snow amounts are expected with the front and upper low, with the best chance north of I-80.
1155 AM MDT WED APR 13 2016 FORECAST CHALLENGES DEAL WITH RAIN ONSET LATER THIS WEEK AS A SLOW MOVING LOW PRESSURE SYSTEM MOVES THROUGH THE AREA. HIGH PRESSURE IN CONTROL OF THE WEATHER ACROSS SOUTHEAST WYOMING AND NEBRASKA PANHANDLE. GULF OF ALASKA SHOWING OUR LOW PRESSURE SYSTEM RIGHT AROUND 47N 150W. PRETTY EXTENSIVE BAND OF MOISTURE OUT AHEAD OF THIS LOW PUSHING INTO NORTHERN CALIFORNIA NEAR KSFO THIS MORNING. COULD BE SEEING SNOW IN THE HIGHEST ELEVATIONS AS EARLY AS THIS TIME.
AN UPPER LEVEL TROUGH ACROSS THE GULF OF MEXICO WILL PULL SOME MOISTURE INTO THE REGION THROUGH THE PERIOD. SURFACE RIDGING INTO THE SOUTHERN APPALACHIANS WILL PRODUCE LIGHT TO CALM WINDS THROUGH THE PERIOD.
DRIER CONDITIONS EXPECTED TONIGHT AS AN UPPER TROUGH CONTINUES TO SHIFT EAST.
A WAVE DEVELOPING OFF THE EAST COAST OF FLORIDA ALONG WITH HIGH PRESSURE TO THE NORTH WILL RESULT IN CONTINUED ONSHORE FLOW THROUGH THIS PERIOD. A WAVE OF LOW PRESSURE WILL MOVE EAST FROM THE GULF THIS EVENING. SPLIT UPPER LEVEL FLOW WILL CONTINUE TO BEGIN THE PERIOD WITH UPPER LOW OVER ARKANSAS.
354 PM CDT WED APR 13 2016 Upper low over the area will move slowly east overnight, with any lingering showers limited to southeast Oklahoma and west central Arkansas.
WITH LITTLE AVAILABLE MOISTURE AND DOMINATING SUBSIDENCE IN THE LARGE SCALE RIDGING THIS WAVE WILL RESULT IN LITTLE MORE THAN SOME HIGH AND MID LEVEL CLOUD COVER ACROSS THE REGION TODAY. AS STEADFAST CANADIAN HIGH PRESSURE WILL BE LOCKED IN PLACE OVER THE ST LAWRENCE VALLEY. AS MILDER AIR OVER THE UPPER MISSISSIPPI VALLEY WILL GRADUALLY BUILD TO THE EAST WITHIN AN AMPLIFYING MID LEVEL RIDGE.
325 PM EDT WED APR 13 2016 HIGH PRESSURE WILL DOMINATE THE OHIO VALLEY AND LOWER GREAT LAKES INTO THE WEEKEND. THE HIGH TO OUR NORTHEAST OVER QUEBEC WILL EVENTUALLY DRIFT SOUTH TO NEW ENGLAND. THIS WILL HAVE THE EFFECT OF TURNING WINDS FROM EASTERLY TO MORE SOUTHEAST AND SOUTHERLY FOR THE WEEKEND AS AN UPPER RIDGE BUILDS ACROSS THE EASTERN LAKES AND OHIO VALLEY.
401 PM CDT WED APR 13 2016 A TOP 10 WEATHER DAY OUT THERE THIS AFTERNOON FOR MANY AREAS AS TEMPERATURES CLIMB INTO THE LOW TO MID 70S ACROSS SOUTHERN AND WESTERN MINNESOTA. MUCH COOLER TEMPS CONTINUE FURTHER EAST INTO WISCONSIN WHERE HIGHS SO FAR HAVE BEEN IN THE 50S IN THE LADYSMITH AREA. TEMPERATURES MAY END UP WARMER THAN FORECAST IN THESE STRONG WAA SCENARIOS AND MOISTURE RETURN MAY BE HAMPERED BY DEEP MIXING. THE BEST THERMAL RIDGING WILL EXTEND FROM SOUTH DAKOTA NORTHEAST INTO CENTRAL AND NORTHERN MN. WITH COOLER AIR ALOFT FURTHER SOUTH AND EAST. ONLY CHANCE OF SHOWERS IN THE FORECAST WILL BE RELATED TO THIS SHORT WAVE AS IT DIVES SOUTHEAST OVER THE WESTERN GREAT LAKES AND WEAKENS AS THE MEAN RIDGE HOLDS. IF THE BLOCKING RIDGE HOLDS STRONGER. EVEN IF THE RIDGE BREAKS DOWN SOME.
624 PM EDT WED APR 13 2016 HIGH PRESSURE OVER SOUTHEAST CANADA WILL DOMINATE THE WEATHER OVER NEW ENGLAND FOR THE NEXT SEVERAL DAYS.
337 PM EDT WED APR 13 2016 HIGH PRESSURE OVER SOUTHEAST CANADA WILL DOMINATE THE WEATHER OVER NEW ENGLAND FOR THE NEXT SEVERAL DAYS.
104 PM EDT WED APR 13 2016 HIGH PRESSURE CENTERED TO OUR NORTH AND NORTHEAST. JUST MADE A QUICK ADJUSTMENT TO TEMPS AS THEY ARE RUNNING SLIGHTLY WARMER THAN FORECASTED. HAVE ALLOWED FOR THE FROST/FREEZE HEADLINES TO EXPIRE THIS MORNING AS WE CONTINUE TO WARM ABOVE FREEZING AT ALL LOCATIONS. TONIGHT SHOULD BE WARMER THAN CURRENT MORNING LOWS. BUT STILL COULD BE FLIRTING WITH POTENTIAL FROST ACROSS THE NORTHERN CWA WITH TEMPS IN THE LOW TO MID 30S.
A cold front will push through the Tri-state region overnight. Overnight lows will range from the upper 40s northwest to the lower 60s southeast.
THIS WILL RAPIDLY SNAP THE STRONGEST COLD FRONT OF THE SEASON THUS FAR THROUGH CENTRAL FLORIDA BEGINNING IN THE AFTERNOON.
1206 PM CST SAT NOV 21 2015 A MUCH QUIETER DAY IN STORE AS SURFACE RIDGING SLIDES ACROSS THE REGION. WINDS WILL BE RELATIVELY LIGHT TODAY WITH THE HIGH PRESSURE. STAYED ON THE LOW SIDE OF GUIDANCE WITH RESPECT TO AFTERNOON HIGHS. TO UPPER 20S TO AROUND 30 THROUGH THE HIGHWAY 14 CORRIDOR WHERE LITTLE SNOW FELL. THE HIGH MOVES OFF TO THE EAST TONIGHT WITH A LIGHT SOUTHERLY FLOW RETURNING TO THE AREA. LOOKING AT MID/UPPER TEENS ALONG THE HIGHWAY 14 CORRIDOR TO JUST EITHER SIDE OF 10 DEGREES TO THE SOUTH OF THAT AREA. THIS SNOW SHOULD KEEP TEMPERATURES MUCH COOLER THAN SURROUNDING AREAS. AND WINDS FLOWING OVERTOP THE SNOWPACK WILL KEEP DOWNSTREAM AREAS A BIT COOLER AS WELL.
THE COLD FRONT HAS CLEARED THE CWA LATE THIS MORNING AND IN ITS WAKE. WINDS SHOULD BE LIGHT WITH HIGH PRESSURE DOMINANT OVER THE AREA. ANOTHER SHOT AT SUB FREEZING TEMPERATURES ARE EXPECTED OVERNIGHT SUNDAY.
300 PM EST SAT NOV 21 2015 A COLD FRONT WILL SPAWN RAIN AND SNOW SHOWERS TONIGHT. SNOW SHOWERS ON SUNDAY WILL AFFECT AREAS NORTH OF INTERSTATE 80 AS WELL AS IN THE RIDGES. WITH THE COLD FRONT ANALYZED ACROSS INDIANA AT THIS TIME. THE LOW WILL PASS NW OF THE FORECAST AREA. PRECIPITATION ALONG AND AHEAD OF THE COLD FRONT WILL BECOME LESS INTENSE AS THE BOUNDARY APPROACHES AND CROSSES THE REGION. NEARLY-SATURATED AIR MASS WILL SUPPORT LAKE-ENHANCED SNOW IN BOTH THE RIDGES AND FAR NORTHERN ZONES NEAR AND NORTH OF INTERSTATE 80. AND IN THE UPPER TEENS IN THE RIDGES.
BE SURE TO ENJOY THE SEASONABLE TEMPS TODAY! CLOUD COVER AHEAD OF THE COLD FRONT IS CURRENTLY PUSHING INTO NW AL AS SEEN ON VIS SATELLITE. AS THE COLD FRONT MOVES INTO THE TN VALLEY THIS AFTERNOON. WITH GUSTS UP TO 30 KTS ESPECIALLY IN THE HIGHER ELEVATIONS. JMS MID/HIGH CLOUDS CONTINUE TO STREAM INTO THE AREA FROM THE WEST AHEAD OF AN APPROACHING COLD FRONT.
111 PM PST SAT NOV 21 2015 MOSTLY CLEAR SKIES AND A SLIGHT WARMING TREND WILL CONTINUE THIS WEEKEND WITH HIGH PRESSURE IN CONTROL.
SOME HIGH CLOUDS ASSOCIATED WITH A WEAK UPPER LOW WEST OF OREGON HAVE GOT CAUGHT IN THE FLOW ALOFT AND SHOULD MOVE SOUTHEAST ACROSS NEVADA, ALTHOUGH MODEL OUTPUT SUGGESTS MUCH OF HIGH CLOUDS WILL DISSIPATE.
231 PM CST SAT NOV 21 2015 THE COLD FRONT HAS MOVED ALL THE WAY INTO THE GULF OF MEXICO THIS AFTERNOON. THIS HIGH WILL MOVE OVER THE RED RIVER TONIGHT THROUGH TOMORROW MORNING. THE HIGHEST CHANCES RIGHT NOW APPEAR TO BE DURING THE DAY THANKSGIVING, AS A STRONG COLD FRONT MOVES INTO THE REGION.
TODAY THROUGH SUNDAY NIGHT 09Z SURFACE ANALYSIS HAD HIGH PRESSURE FROM SOUTHERN BC INTO NORTHEAST CO. FAIRLY FAST NORTHWEST FLOW ALOFT PER WATER VAPOUR WITH UPPER TROUGH OVER THE MIDWEST AND RIDGE BUILDING OVER THE FAR WEST. UPPER TROUGH SHIFTS EAST WITH WEAKLY BUILDING HEIGHTS OVER THE ROCKIES. UPPER RIDGE BUILDS IN EARNEST OVER THE ROCKIES AND THEN INTO THE NORTHERN PLAINS. FAST MOVING CLIPPER-TYPE SYSTEM WILL MOVE ACROSS CENTRAL CANADA INTO MIDWEST WHICH WILL DRAG A WARM FRONT THROUGH THE CWA RESULTING IN MUCH WARMER TEMPERATURES.
MAIN CHALLENGE TONIGHT WILL TRANSITION TO TEMPS WITH LOW LEVEL THERMAL TROUGH BECOME ENTRENCHED ACROSS THE AREA IN THE WAKE OF THE DEPARTED STORM SYSTEM. 850 TROUGH REMAINS TO OUR WEST THROUGH THE DAY WITH SOME INCREASE IN MID LEVEL MOISTURE EXPECTED WITH THE RENEWED WAA REGIME.
303 PM EST SAT NOV 21 2015 CURRENT CONDITIONS ACROSS THE AREA FEATURE AN IN COMING COLD FRONT WITH A LINE OF SHOWERS AHEAD AND WITH IT MOVING INTO EASTERN KENTUCKY. RIDGING OFF TO THE EAST IMPEDING THE ARRIVAL OF THE FRONT IS WEAKENING THE BOUNDARY AS IT MOVES INTO EASTERN KENTUCKY. MODELS STILL INDICATE COLDER AIR MOVING IN QUICK ENOUGH BEHIND THIS FRONT FOR A CHANGE OVER TO SNOW BUT MAINLY IN THE HIGHER TERRAIN. HIGH PRESSURE MOVES IN BEHIND THE FRONT WITH SOME OF THE COLDEST AIR OF THE SEASON MOVING INTO THE AREA.
326 PM EST SAT NOV 21 2015 SNOW WILL GRADUALLY TAPER OFF THIS EVENING AS LOW PRESSURE EXITS NORTHEAST. LEFT EXIT REGION OF 140+ KT JET STREAK FAVORING A SWATH OF STRONG DEFORMATION AND FGEN CENTERED AROUND 700MB AS DEEP PV ANOMALY AND NEGATIVELY TILTED TROUGH SWINGS DIRECTLY OVERHEAD. STG NEG PNA SIGNAL NR TERM WILL BREAK POSITIVE THIS PD AS DEEP WRN TROUGHING DVLPS MID WEEK AND THEN ROLLS EWD INTO THE GREAT LAKES/OH VALLEY THU-FRI. LL THERMAL TROUGH WILL MODERATE SIGLY INTO TUE AND FURTHER TWD THANKSGIVING INADV OF EJECTING WRN TROUGH. WILL GENERALLY HEDGE WARMER ESP DYS 6-7/THU-FRI IN LIGHT OF SHARP LL THERMAL RIDGE BRIDGING NEWD INTO THE LAKES AND MOS TRENDS.
1122 AM CST SAT NOV 21 2015 THE 08Z MSL ANALYSIS SHOWED STRONG HIGH PRESSURE FROM SOUTHERN BRITISH COLUMBIA ACROSS WYOMING INTO WESTERN NEBRASKA AND WESTERN SOUTH DAKOTA. THE LOW PRESSURE CENTER HAD MOVED INTO SOUTHERN MISSOURI AND THE LAST FRONT WAS IN NORTH TEXAS TO SOUTHERN NEW MEXICO. NORTHWEST FLOW ALOFT WILL GRADUALLY BECOME SOUTHWEST DURING THE UPCOMING WEEK AHEAD OF A LARGE TROUGH OF LOW PRESSURE THAT WILL DIG INTO THE WESTERN CONUS.
HIGH PRESSURE WILL CONTINUE TO RESIDE OVER THE REGION PROVIDING MOSTLY CLEAR CONDITIONS AND COOL TEMPERATURES. OVERNIGHT LOWS WILL ONCE AGAIN BE BELOW FREEZING SO FREEZING FOG COULD BE AN ISSUE CAUSING SLICK CONDITIONS. FOG AND LOW STRATUS ARE SLOSHING AROUND THE LOWER COLUMBIA BASIN.
A FAST MOVING COLD FRONT JUST PASSED THROUGH MEMPHIS TENNESSEE. LIGHT SOUTHEASTERLY FLOW WILL BECOME A TAD STRONGER THROUGH THE MORNING AHEAD OF A COLD FRONT ENTERING THE REGION. /ISSUED 526 AM CST SAT NOV 21 2015/ A COLD FRONT WILL MOVE THROUGH TODAY BRINGING IN MUCH COOLER TEMPERATURES FOR SUNDAY.
DRY HIGH PRESSURE IS HANGING ON EARLY THIS MORNING. HOWEVER A FAST MOVING COLD FRONT IS NOW RACING ACROSS MISSOURI AND WILL PLOW THROUGH THE REGION LATER TODAY. THIS DRY AIR WILL BE A CONCERN FOR FIRE WEATHER INTERESTS AS SURFACE WINDS PICK UP AND BECOME GUSTY DURING THE DAY IN RESPONSE TO THE APPROACHING COLD FRONT. STRONG RIDGING WILL BUILD BACK OVER THE AREA FOR THE UPCOMING WEEK.
RAIN/TSTORMS ACTIVITY WILL GET SHUNTED OFF THE SOUTHEAST COAST AS IT PASSES WITH COOLER AND MUCH LESS HUMID AIR FLOWING INTO SOUTH FLORIDA ON NORTHERLY WINDS BEHIND THE FRONT.
THE COLD FRONT HAS ALMOST MADE IT THROUGH ALL OF THE RGV THIS AFTERNOON WITH ONLY SOME SPOTTY SHOWER ACTIVITY FIRING NEAR THE BOUNDARY. THE CAA IS NOT STRONG ENOUGH TO PRODUCE ANY FREEZING TEMPS AROUND THE REGION.
An area of high of high pressure that brought cooler conditions to the region this weekend will be shifting off to the east, with a southeast to south wind developing, allowing moisture and temperatures to increase through the week.
DEEP MOISTURE WITH PRECIPITABLE WATERS NEAR 2 INCHES WILL BE IN PLACE AHEAD OF THIS TROUGH. THE ASSOCIATED COLD FRONT WILL BE THE STRONGEST OF THE YEAR SO FAR.
1102 AM EST SAT NOV 21 2015 A COLD FRONT WILL SPAWN RAIN AND SNOW SHOWERS TONIGHT. AS A COLD FRONT SWEEPS OUT OF THE MIDWEST WITH LOW PRESSURE DEEPENING OVR THE GREAT LAKES. AND WITH DRY ENCROACHMENT AND MID LEVEL TROUGH PROGRESSION. ALTHOUGH THE FADING DYNAMICS PER THE WESTWARD TRACK AND RELATIVELY WARM BOUNDARY LAYER WILL NOT BE SUPPORTIVE OF ANY SIGNIFICANT ACCUMULATION OUTSIDE OF THE I 80 CORRIDOR AND RIDGES WHICH COULD SEE AN INCH IN THE PREDAWN. ZONES NORTH OF I 80 AS WELL AS THE RIDGES WILL EXPERIENCE SOME LINGERING SNOW SHOWER POTENTIAL INTO SUNDAY.
LATEST SATELLITE IMAGERY SHOWED A LARGE UPPER TROUGH OVER THE CONUS. COLD CANADIAN AIR WAS COMING INTO THE ARKLAMISS REGION ON THE HEELS OF A STRONG COLD FRONT. HIGHS WILL RANGE FROM THE MIDDLE 40S NORTH TO THE LOWER 50S SOUTH. FOR SUNDAY NIGHT COLD CANADIAN HIGH PRESSURE WILL PUSH INTO THE REGION AS WINDS BECOME LIGHT AND EXCELLENT RADIATIONAL CONDITIONS EXCEPT FOR THE SATURATED SOILS ALLOW TEMPS TO BOTTOM OUT INTO THE MIDDLE 20S TO THE LOWER 30S.
LOOKS LIKE COLD FRONT PUSHING THROUGH HOUSTON OVER THE NEXT HOUR AND THEN OFF THE COAST BY 18-19Z. CONVECTION ALONG THE PREFRONTAL TROUGH WILL BE CLEARING THE AREA OVER THE NEXT COUPLE OF HOUR SO EXPECT ANOTHER ADJUSTMENT TO THE SHORT TERM FORECAST FOR RAIN CHANCES AND TEMPERATURE TRENDS. TEMPS ARE DROPPING INTO THE LOW 60S/UPPER 50S BEHIND THE FRONT WITH EVEN COLDER AIR LAGGING BEHIND.