Aikyam-Lab/Synoptic-Bench huggingface dataset:
623 AM CDT WED APR 29 2015 UA ANALYSIS FROM EARLIER THIS EVENING HAD RIDGING EXTENDING FROM SO CAL NEWD INTO THE CANADIAN PRAIRIE PROVINCES AND SOUTHERN PORTIONS OF THE NW TERRITORIES. EAST OF THE RIDGE. A TROUGH OF LOW PRESSURE EXTENDED FROM HUDSON BAY SWD TO THE NORTHERN GREAT LAKES. EAST OF THE TROUGH. A DECENT UPPER LEVEL LOW WAS NOTED SOUTH OF NOVA SCOTIA. HIGH PRESSURE WAS ANCHORED ACROSS THE CENTRAL AND NORTHERN PLAINS WITH MAINLY CLEAR SKIES NOTED. HIGH PRESSURE WILL TRANSITION EAST INTO THE MID MISSISSIPPI VALLEY TODAY AND TONIGHT. WENT WITH THE WARMER MAV TEMPS FOR TODAY AS THE LOWER TO MID 70S SEEM PLAUSIBLE GIVEN THE FCSTD H85 TEMPS IN THE NAM. OVERNIGHT LOWS WILL FALL OFF TO THE LOWER 40S ACROSS ALL OF WESTERN AND NORTH CENTRAL NEBRASKA.
422 AM PDT WED APR 29 2015 Today will be breezy and cooler with afternoon temperatures in the 60s over much of the Inland Northwest.
/ISSUED 332 AM EDT WED APR 29 2015/ SHOWERS AND THUNDERSTORMS ARE EXPECTED TODAY IN ADVANCE OF A COLD FRONT THAT MOVES THROUGH TONIGHT. HIGH PRESSURE THEN BRINGS SLIGHTLY COOLER AND MUCH DRIER CONDITIONS THAT WILL CONTINUE INTO THE WEEKEND.
/ISSUED 344 AM CDT WED APR 29 2015/ THE UPPER LOW THAT BROUGHT RAIN SHOWERS TO EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THE PAST COUPLE OF DAYS HAS NOW PUSHED OFF TO THE EAST. MOSTLY CLEAR SKIES WERE COMMON ACROSS THE REGION EARLY THIS MORNING AS HIGH PRESSURE SET UP OVER THE SOUTHERN PLAINS. QUIET WEATHER CONDITIONS ARE EXPECTED TO CONTINUE THROUGH THE WEEK AS HIGH PRESSURE SLIDES THROUGH THE PLAINS.
UPPER LEVEL LOW AND -SHRA WILL EXIT BY 13-14Z LEAVING VFR CIGS THIS MORNING INTO THE EARLY AFTERNOON HOURS. THIS ACTIVITY IS ON THE BACK EDGE OF THE UPPER LOW CENTERED OVER CENTRAL GEORGIA. DRY AIR WILL PUSH IN BEHIND THE UPPER LOW IN THE UPPER LEVELS OF THE ATMOSPHERE (ABOVE 700 MB) AND NEAR THE SURFACE DURING THE LATE MORNING HOURS.
758 AM EDT WED APR 29 2015 A WEAK RIDGE OF HIGH PRESSURE WILL MAINTAIN FAIR WEATHER ACROSS MOST OF CENTRAL PENNSYLVANIA TODAY. AN UPPER LOW DROPPING SOUTH THROUGH THE NORTHERN GREAT LAKES INTO THE OHIO VALLEY.
MORNING SURFACE ANALYSIS SHOWS A BROAD CENTER OF LOW PRESSURE CURRENTLY SHIFTING THROUGH THE PENINSULA. WINDS HAVE ALREADY SHIFTED TO THE NW ACROSS THE WESTERN PANHANDLE AS THE TRAILING COLD FRONT HAS PUSHED INTO THE EASTERN GULF. VCSH POSSIBLE FOR THE SITES THROUGH THE EARLY AFTERNOON AS A COLD FRONT SLIDES CLOSER TO THE COASTLINE. AN AREA OF LOW PRESSURE WILL CONTINUE TO TRACK OVER THE STATE TODAY AND DRAG A COLD FRONT THROUGH EASTERN GULF THROUGH TOMORROW. COLD FRONT PASSAGE TOMORROW WILL SHIFT WINDS MORE NORTHWESTERLY AND BREEZY AT TIMES.
BUT MUCH OF THE HIGH-RES GUIDANCE BRINGS 2. 5K FT CIGS AROUND 13Z WEDNESDAY AT THE LAKESHORE SITES AS COLD AIR COMES DOWN THE LAKE AND BOOSTS THE LOW- LEVEL RH. FOCUS SQUARELY ON VIGOROUS CLOSED LOW APPROACHING EASTERN LAKE SUPERIOR AS IT DROPS SOUTH OVER LAKE MICHIGAN/LOWER MICHIGAN TODAY AND TONIGHT. COLD AIR COMING DOWN THE LAKE FASTER THAN OVER LAND ON NORTHEAST WINDS TO THE EAST OF THE INVERTED TROUGH WILL KEEP EASTERN CWA COOL WITH 925 MB TEMPS HOLDING UP IN THE WEST ALONG WITH SOME EARLY SUN HELPING TO GET HIGHS INTO THE MID TO UPPER 60S ALONG AND WEST OF A BERLIN.
CHATTANOOGA AIRPORT, TN 67 49 69 46 / 80 30 20 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 65 49 65 44 / 50 20 50 20 OAK RIDGE, TN 66 49 65 44 / 30 20 40 20 TRI CITIES AIRPORT, TN 64 45 61 43 / 50 30 70 50.
729 AM EDT WED APR 29 2015 HIGH PRESSURE WILL WEAKEN TODAY. AN UPPER LEVEL LOW PRESSURE SYSTEM WILL DROP SOUTH ACROSS THE CENTRAL GREAT LAKES LATER TODAY TO THE TENNESSEE VALLEY ON THURSDAY.
622 AM CDT WED APR 29 2015 NEARLY PERFECT SPRING DAY ACROSS THE REGION TODAY AS DRY HIGH PRESSURE BUILDS INTO THE REGION LEADING TO CLEAR SKIES AND LIGHT WINDS THROUGHOUT THE DAY. MODELS ARE STILL SHOWING SOME RAINFALL ASSOCIATED WITH A WEAK COLD FRONT.
WITH KHOT BEING THE LOWER OF THE TWO. AND KLLQ THIS AFTERNOON AS THE LOW LEVEL AIR MASS WILL BE WELL MIXED.
1113 AM EDT WED APR 29 2015 WEAK HIGH PRESSURE OVER THE GREAT LAKES WILL KEEP MAINLY CLEAR SKIES AND MILD WEATHER ACROSS THE REGION TODAY. A WEAK LOW PRESSURE SYSTEM DROPPING ACROSS THE UPPER GREAT LAKES INTO THE MAINLY TO AREAS SOUTH OF THE THRUWAY. A WEAK HIGH PRESSURE WILL BE IN CONTROL TODAY. BUT WITH 850 MB TEMPERATURES RUNNING SLIGHTLY HIGHER / APPROACHING +6C/ FAVOR SLIGHTLY WARMER HIGH TEMPERATURES THAN PERSISTENCE. WATERTOWN / OSWEGO WILL ALSO BE KEPT SLIGHTLY COOLER / LOWER 60S / COMPARED TO MID/UPPER 60S TOWARD LOWVILLE. INCREASING CLOUD COVER AND A CONTINUED MILD AIRMASS WILL KEEP OVERNIGHT LOW TEMPERATURES IN THE LOW 40S. UNEVENTFUL WEATHER WILL BE FOUND ACROSS THE LOWER GREAT LAKES DURING THIS PERIOD.
1224 PM EDT WED APR 29 2015 HIGH PRESSURE WILL WEAKEN TODAY. AN UPPER LEVEL LOW PRESSURE SYSTEM WILL DROP SOUTH ACROSS THE CENTRAL GREAT LAKES LATER TODAY TO THE TENNESSEE VALLEY ON THURSDAY.
THE UPPER LEVEL LOW THAT BROUGHT THE CLOUDS AND SHOWERS ACROSS NORTHERN AREAS OF SOUTH CENTRAL TEXAS YESTERDAY HAS PUSHED EASTWARD AND CAN BE SEEN SITUATED OVER NORTHERN MISSISSIPPI ON THE WATER VAPOR IMAGERY.
621 AM CDT WED APR 29 2015 WV IMAGERY SHOWING A WELL AMPLIFIED PATTERN WITH A LARGE UPPER RIDGE SITTING OVER THE MAJORITY OF THE WRN/CNTRL CONUS. MODELS ARE IN GOOD AGREEMENT PAC NW TROF WILL QUICKLY SCOOT ALONG THE U. AND BY THURSDAY NIGHT DRAG A COLD FRONT INTO THE DAKOTAS WITH PCPN ACTIVITY DEVELOPING ALONG AXIS OF MOIST BNDRY LYR CONVERGENCE.
/10/ ALL SITES WERE VFR AS THE LAST OF THE LOW LEVEL CLOUDS WERE EXITING THE EAST CENTRAL SECTION. /ISSUED 416 AM CDT WED APR 29 2015/ THE UPPER LOW IS MOVING ACROSS THE NORTHERN PORTIONS OF THE STATE THIS MORNING WITH A FEW SHOWERS CONTINUING MAINLY OVER THE NORTHEASTERN PORTIONS OF THE AREA. ANOTHER UPPER TROUGH WILL SWING ACROSS THE AREA THIS EVENING.
THIS COMBINED WITH AN INVERSION IN THE MID LEVELS AND THE LOW LEVEL COOLING PRODUCED BY THIS MORNING'S RAINS COULD DELAY THE THUNDERSTORM FORMATION THIS AFTERNOON. /ISSUED 332 AM EDT WED APR 29 2015/ SHOWERS AND THUNDERSTORMS ARE EXPECTED TODAY IN ADVANCE OF A COLD FRONT THAT MOVES THROUGH TONIGHT. HIGH PRESSURE THEN BRINGS SLIGHTLY COOLER AND MUCH DRIER CONDITIONS THAT WILL CONTINUE INTO THE WEEKEND.
923 AM EDT WED APR 29 2015 THE EVER-PRESENT UPPER LEVEL LOW WILL FINALLY BEGIN TO SHIFT SLOWLY EASTWARD. HIGH PRESSURE BUILDS IN OVER THE WEEKEND.
918 AM PDT WED APR 29 2015 Today will be breezy and cooler with afternoon temperatures in the 60s over much of the Inland Northwest.
A WEAK COLD FRONT WILL CROSS NORTHERN UTAH TONIGHT AND SETTLE INTO CENTRAL UTAH TOMORROW. A RIDGE AXIS EXTENDS FROM SOUTH-CENTRAL UTAH THROUGH SOUTHWEST WYOMING THIS MORNING WHILE AN UPPER TROUGH IS MOVING INTO THE PACIFIC NORTHWEST. WILL MOSTLY EXPECT TO SEE SOME CUMULUS BUILDUPS OVER THE HIGHER TERRAIN WITH AFTERNOON HEATING. OTHERWISE SOME ENHANCED SOUTHERLY BREEZES WILL DEVELOP ACROSS THE WESTERN VALLEYS AHEAD OF THE TROUGH AS IT DEEPENS WHILE CROSSING THE PACIFIC NORTHWEST STATES THIS AFTERNOON. A COLD FRONT ASSOCIATED WITH THE TROUGH IS EXPECTED TO ENTER FAR NORTHWEST UTAH EARLY THIS EVENING.
811 PM MST WED NOV 4 2015 LOW PRESSURE WILL EXIT THE REGION OVERNIGHT. USHERING IN DRIER AIR AND COOLER TEMPERATURES. SOME OF THE HIGHEST ELEVATIONS AND MOUNTAIN PEAKS COULD SEE A CHANGEOVER FROM RAIN TO SNOW RIGHT AS THE PRECIP IS COMING TO AN END. LOWS LOOK REASONABLE BUT I ACCELERATEDTHE COOLDOWN A BIT AND KEPT LOWS IN THE LOW 50S/UPPER 40S.
650 PM EST WED NOV 4 2015 UNSEASONABLY WARM WITH HIGH PRESSURE INTO THURSDAY.
WILL MAINTAIN THE CHC POPS ACROSS THE W CWA DUE TO THE PROXIMITY OF THE UPPER LOW AND UPPER DYNAMICS.
A MOIST SOUTHWEST FLOW WILL CONTINUE THROUGH THE FORECAST PERIOD AS THE SUB-TROPICAL HIGH PRESSURE RIDGE PERSISTS OVER THE SOUTHEASTERN U. WHILE THE WESTERN TROUGH TRIES TO MAKE EASTWARD PROGRESS FROM THE INTERMOUNTAIN WEST INTO THE PLAINS.
MAIN FEATURE THAT STICKS OUT IS A DEEP/SHARP TROUGHING MOVING THROUGH THE INTER-MOUNTAIN WEST. ANCHORED BY AN UPPER LOW NEAR THE FOUR- CORNERS REGION. THIS RIDGE IS CERTAINLY IN CONTROL OF THE GULF OF MEXICO AND FLORIDA PENINSULA. THE INFLUENCE OF THE RIDGE ALOFT WILL PROTECT OUR REGION FROM THIS ENERGY AND OTHER THAN SOME HIGHER CLOUDS AT TIMES DOWN TOWARD FORT MYERS.
THE TRANSITION BETWEEN THE LOW CLOUDS AND FOG REMAINS TRICKY. FORECAST SOUNDINGS SHOW THE ENTIRE COLUMN COOLING SO FREEZING RAIN IS NOT A CONCERN. AND SURFACE TEMPERATURES REMAIN JUST THE WARM SIDE OF FREEZING. AN INCH OR TWO MOST AREAS TO THREE IN THE HIGHER TERRAIN NORTHEAST OF BISMARCK.
THE INVERSION IS THE RESULT OF CONTINUED RIDGING ALOFT AND THE RESULTANT WARM AND DRY AIRMASS AS EVIDENCED BY AN ANOMALOUSLY HIGH FREEZING LEVEL AT OVER 16K FEET.
946 PM EST WED NOV 4 2015 HIGH PRESSURE WILL MAINTAIN WARM AND DRY WEATHER THROUGH THURSDAY.
MODEL RUNS THIS MORNING HAVE BEEN INDICATING THAT THE HIGHEST AMOUNTS OF QPF MAY OCCUR OVER LARIMER AND WELD COUNTIES. FORECAST TEMPERATURES FROM MORNING MODEL RUNS WERE A FEW DEGREES COOLER THAN PREVIOUS RUNS. HAVE THEREFORE DROPPED THE LOW TEMPERATURES DOWN CLOSE TO THE FREEZING MARK WHICH WILL ALLOW THE RAINFALL THAT DEVELOPS THIS EVENING TO CHANGE OVER TO SNOW AFTER MIDNIGHT. MOISTURE TRAPPED WEST OF THE CONTINENTAL DIVIDE WILL HELP TO KEEP SCATTERED SNOW SHOWERS GOING OVER THE HIGH COUNTRY.
921 PM EST WED NOV 4 2015 UNSEASONABLY WARM WITH HIGH PRESSURE INTO THURSDAY.
AS A PACIFIC COLD FRONT APPROACHES. /ISSUED / PRIMARY FORECAST CONCERN ARE THE IMPACTS FROM THE APPROACHING TROUGH LATE TONIGHT INTO TOMORROW. AS THE TROUGH AND ASSOCIATED PACIFIC FRONT/DRYLINE APPROACH.
607 PM EST WED NOV 4 2015 HIGH PRESSURE WILL MOVE EAST OF THE AREA TONIGHT. A WARM FRONT WILL SLOWLY MOVE ACROSS THE AREA THURSDAY INTO THURSDAY NIGHT.
652 PM EST WED NOV 4 2015 WEDGE CONDITIONS ACROSS THE AREA WILL BREAK THURSDAY AS THE CENTER OF HIGH PRESSURE MOVES OFFSHORE. A COLD FRONT WILL CROSS THE REGION OVER THE WEEKEND.
647 PM EST WED NOV 4 2015 HIGH PRESSURE WILL MAINTAIN WARM AND DRY WEATHER THROUGH THURSDAY.
RAIN WILL CHANGE COMPLETELY OVER TO SNOW THIS EVENING AS THE COLD CORE OF THE LOW PRESSURE SYSTEM ADVECTS COLD AIR INTO THE VALLEYS TONIGHT. MODELS KEEP THIS PRECIP GOING THROUGH THE OVERNIGHT HOURS AS THE LOW PRESSURE TRACKS EWRD. THIS WILL FILL IN AS THE DAY PROGRESSES AS THE NEXT SHOT OF ENERGY ROUNDS THE BASE OF THE TROUGH AND MOVES OVERHEAD PROVIDING MORE LIFT. THE STRONG COLD FRONT THAT MOVED THROUGH YESTERDAY WILL ALLOW TEMPERATURES TO DROP OVERNIGHT WITH SOME SNOW EXPECTED ON VALLEY FLOORS. THURSDAY THE UPPER TROUGH DROPS ONTO THE PLAINS. THE COLDEST AIR OF THE SEASON SO FAR POURS INTO THE REGION WITH AFTERNOON TEMPERATURES 10-15 BELOW NORMAL AND HARD FREEZES OVERNIGHT FOR EVEN THE LOWEST ELEVATIONS. WEST WINDS REMAIN BRISK OVER THE HIGHER TERRAIN.
AND NOT MUCH GOING ON IN OUR WEST EXCEPT PERHAPS SOME SNOW SHOWERS OVER THE HIGH TERRAIN. DIVERGENCE AND WEAK VORTICITY ADVECTION ASSOCIATED WITH UPPER TROF WAS PRODUCING MAINLY LIGHT PRECIPITATION ACROSS THE EASTERN HALF OF OUR FORECAST AREA THIS AFTERNOON. THE TROF AXIS IS CURRENTLY JUST TO OUR WEST AND WILL SLIDE EAST OVER OUR REGION THIS EVENING WHICH WILL BRING AN END TO OUR PRECIPITATION OVERNIGHT.
CHATTANOOGA AIRPORT, TN 62 73 65 75 / 20 30 20 50 KNOXVILLE MCGHEE TYSON AIRPORT, TN 59 72 63 75 / 10 20 10 40 OAK RIDGE, TN 59 71 62 75 / 10 20 10 60 TRI CITIES AIRPORT, TN 53 74 57 74 / 10 10 10 40.
937 PM EST WED NOV 4 2015 A WARM FRONT MOVES THROUGH TONIGHT. WEAK HIGH PRESSURE OTHERWISE REMAINS OVER THE REGION THROUGH THURSDAY NIGHT.
A PACIFIC COLD FRONT WILL ALSO TRANSLATE ACROSS THE TX AND OK PNHDLS LATER TONIGHT. /ISSUED / UPPER LEVEL TROUGH CURRENTLY OVER NEVADA WILL CONTINUE MOVING EAST INTO THE FOUR CORNERS REGION TONIGHT. AMPLE BULK SHEAR WILL KEEP THE POTENTIAL FOR STRONG TO POSSIBLY SEVERE STORMS INTO THE OVERNIGHT HOURS AS THE FOCUS SHIFTS MORE FROM DIURNALLY DRIVEN TO DYNAMICALLY DRIVEN AS THE UPPER LEVEL TROUGH APPROACHES. AS THE UPPER LEVEL TROUGH LIFTS NORTHEAST. IT PUSHES A COLD FRONT SOUTH ACROSS THE PANHANDLES THURSDAY NIGHT. AS WELL AS TEMPERATURES AT OR BELOW THE FREEZING MARK ACROSS THE OKLAHOMA PANHANDLE AND NORTHERN/WESTERN PORTIONS OF THE TEXAS PANHANDLE.
/ISSUED / A MID LEVEL TROUGH OF LOW PRESSURE EXTENDING FROM THE FLORIDA KEYS TO WESTERN CARIBBEAN SEA WILL CONTINUE TO MOVE WEST AND AWAY FROM SOUTH FLORIDA TONIGHT AS HIGH PRESSURE OVER THE FLORIDA PENINSULA REMAINS NEARLY STATIONARY. HIGH PRESSURE OVER THE FLORIDA PENINSULA WILL REMAIN NEARLY STATIONARY ON THURSDAY KEEPING THE DRIER AIR IN PLACE OVER SOUTH FLORIDA ALONG WITH THE EASTERLY WIND FLOW.
903 PM EST WED NOV 4 2015 THE CONUS VIEW SHOWS A TROUGH DIVING SOUTH ALONG THE INTERMOUNTAIN WEST WITH A MASSIVE AREA OF HIGH PRESSURE ACROSS THE MID ATLANTIC STATES. AN INVERTED TROUGH IS NEAR THE WESTERN TIP OF CUBA AND THE TROUGH AXIS EXTENDS ACROSS CENTRAL CUBA. WITH THE MASSIVE RIDGE TO OUR NORTH AND THE TROUGH TO THE SOUTH. MOISTURE IS BEING SQUEEZED BETWEEN THE HIGH PRESSURE TO OUR NORTH AND THE TROUGH TO THE SOUTH.
Lows will be at their usual August levels in the lower 70s.
A WEAK UPPER LEVEL DISTURBANCE AND ASSOCIATED DRY, SURFACE COLD FRONT WILL MOVE ACROSS THE AREA THURSDAY NIGHT.
918 PM EST WED NOV 4 2015 HIGH PRESSURE WILL REMAIN OFF THE EAST COAST THROUGH TONIGHT THEN MOVE FARTHER OFFSHORE THURSDAY.
HIGH PRESSURE WILL BEGIN TO MOVE OVER THE STAEON THURSDAY WITH DRY AND WARMER WEATHER RETURNING FOR THE END OF THE WEEK. THE AREA OF LOW PRESSURE THAT HAS BROUGHT THE RAIN AND SNOW TO ARIZONA IS MOVING OVER SOUTHERN NEVADA AND NORTHERN ARIZONATHIS AFTERNOON. THIS LOW WILL CONTINUE TO TRACK EASTWARD AND INTO NEW MEXICO AND COLORADO ON THURSDAY. A WINTER WEATHER ADVISORY IS CURRENTLY IN EFFECT FOR AREAS OF NORTHERN ARIZONA OVER THE HIGH COUNTRY FROM THE KAIBAB PLATEAU SOUTHEASTWARD TO THE EASTERN MOGOLLON RIM.
STILL EXPECTING ONLY A SMALL TEMPERATURE DIFFERENCE BETWEEN THE RIDGES AND THE VALLEYS WITH THE CLOUDS IN PLACE.
A TROUGH OF LOW PRESSURE EXTENDED FROM THE CENTRAL TO THE WESTERN HIGH PLAINS. 500 MB RIDGING OVER THE GULF OF MEXICO CONTINUED TO IMPINGE ON SE TX AND THIS FEATURE LOOKS STRONG ENOUGH TO KEEP MOST OF THE MSTR OVER CENTRAL TEXAS TONIGHT AND EARLY THURSDAY. ESPECIALLY ACROSS NW AREAS AS A PORTION OF THE MID/UPPER LEVEL TROUGH OVER THE SW U. THEN SHWRS AND TSTMS WILL BECOME MORE NUMEROUS IN THE AFT/EVE AS A COLD FRONT APPROACHES.
BUT THEN BECOME MVFR AS SHOWERS BEGIN AROUND 3Z WITH THE APPROACH OF THE UPPER LEVEL LOW. WHERE THE HIGHEST PRECIPITATION EFFICIENCIES ARE LIKELY TO OCCUR. A COLD FRONT WILL ENTER NORTHWESTERN PORTIONS OF NORTH TEXAS BY MIDDAY THURSDAY.
NWLY FLOW ALOFT WILL BRING A SHORT WAVE RIDGE THROUGH OUR AREA TONIGHT WITH COLD DRY WEATHER. A SHORT WAVE TROUGH WILL FOLLOW IN FROM THE NW THURSDAY AFTERNOON AND EVENING WITH AN INCH OR TWO OF SNOW IN NRN AREAS AND A SLIGHT CHANCE OF SNOW SHOWERS IN SRN AREAS. THE TROUGH CAN BE SEEN ON SATELLITE AS A BAND OF CLOUDS STRETCHING FROM ALBERTA WSWWD ACROSS SRN B.
NEARLY WIDESPREAD LOW CLOUDS/STRATUS IS NOTED N OF THE FRONTAL BOUNDARY WHERE COOL HIGH PRES RIDGE IS NOTED.
THERE MAY BE OCCASIONAL PERIODS OF PARTLY TO MOSTLY CLOUDY SKIES DUE TO THE HIGHER LEVEL LOW CLOUDS AT VARIOUS LOCATIONS OVERNIGHT. THE INVERSION IS THE RESULT OF CONTINUED RIDGING ALOFT AND THE RESULTANT WARM AND DRY AIRMASS AS EVIDENCED BY AN ANOMALOUSLY HIGH FREEZING LEVEL AT OVER 16K FEET.
CLEARING SKIES AND A SLIGHT WARMING TREND FOR THE REMAINDER OF THE WEEK AS WEAK HIGH PRESSURE CONTINUES TO INVADE. THAT SYSTEM IS CURRENTLY CENTERED OVER THE GREAT BASIN WITH ONLY A LITTLE INFLUENCE LEFT FOR THE AREA FROM ITS ENERGY ROUNDING THE BASE OF THE TROUGH. WILL CONTINUE THE PATCHY FOG MENTION OVER THE NEXT SEVERAL MORNINGS AS THE LOW LEVELS REMAIN FAIRLY SATURATED THANKS TO THE GOOD WETTING RAIN EARLY THIS WEEK.
1003 PM EST WED NOV 4 2015 WEDGE CONDITIONS ACROSS THE AREA WILL BREAK THURSDAY AS THE CENTER OF HIGH PRESSURE MOVES OFFSHORE. A COLD FRONT WILL CROSS THE REGION OVER THE WEEKEND.
746 PM PST WED NOV 4 2015 A weak upper level disturbance will move across the area Thursday resulting in the possibility of light snow accumulations mainly over the higher terrain of the Panhandle.
632 PM EST WED NOV 4 2015 HIGH PRESSURE OVER THE REGION WILL WEAKEN AND MOVE EAST.
South winds will veer to the west overnight behind the front/trough, and will gust to 20-30KT through the day Thursday. /issued 143 PM CST WED NOV 4 2015/ Upper trough over AZ making its way closer to the area as it begins to shift into the Plains later tonight. Increasing lift along with an advancing Pacific cold front/dryline will bring parts of the region a chance of thunderstorms late this evening and overnight.
WIDESPREAD COOLER TEMPERATURES ARE ALSO EXPECTED ON THURSDAY IN RESPONSE TO THE PASSAGE OF THE WAVE OF LOW PRESSURE.
/ISSUED 323 PM CST WED NOV 4 2015/ AN UPPER LEVEL RIDGE AXIS CENTERED ALONG THE NORTHERN GULF COAST EXTENDS NORTH ACROSS THE MID SOUTH THIS AFTERNOON AND WILL HELP TO KEEP DRY CONDITIONS THROUGH TONIGHT. THIS SHOULD ADVANCE A COLD FRONT SOUTHEAST INTO THE MID SOUTH BY THURSDAY NIGHT AS WELL.
925 PM EST WED NOV 4 2015 LARGE AND BROAD HI PRES RIDGE CENTERED JUST OFF THE ERN SEABOARD WILL KEEP A WARM AND STABLE AIRMASS IN PLACE OVER CENTRAL FL OVERNIGHT. LARGE AND BROAD HI PRES RIDGE CENTERED JUST OFF THE ERN SEABOARD WILL MAINTAIN GENTLE TO MODERATE E/SE BREEZE OVERNIGHT.
THAT SYSTEM IS CURRENTLY CENTERED OVER THE GREAT BASIN WITH ONLY A LITTLE INFLUENCE LEFT FOR THE AREA FROM ITS ENERGY ROUNDING THE BASE OF THE TROUGH. WILL CONTINUE THE PATCHY FOG MENTION OVER THE NEXT SEVERAL MORNINGS AS THE LOW LEVELS REMAIN FAIRLY SATURATED THANKS TO THE GOOD WETTING RAIN EARLY THIS WEEK.
PRECIPITATION WILL DEVELOP OVERNIGHT TONIGHT AS AN UPPER TROUGH APPROACHES FROM THE WEST. BUT DUE TO THE LOW COVERAGE EXPECTED WE WILL ONLY INCLUDE SHRA IN THE AREA TAFS. BETTER CHANCES FOR THUNDER WILL OCCUR AFTER 18Z THURSDAY AS A COLD FRONT PUSHES ACROSS THE AREA. /ISSUED 337 AM CST WED NOV 4 2015/ AN UPPER LEVEL LOW OVER THE PACIFIC NORTHWEST WILL CONTINUE TO DIG SOUTHWARD INTO SOUTHERN NEVADA BY THIS EVENING. THE LOW WILL OPEN UP AS IT MOVES EASTWARD ACROSS ARIZONA TONIGHT AND THEN MOVE EASTWARD ACROSS THE PLAINS THURSDAY. WIDESPREAD SHOWERS AND THUNDERSTORMS ARE EXPECTED THURSDAY AS LARGE SCALE LIFT ASSOCIATED WITH THE UPPER LEVEL TROUGH AS WELL AS STRONG LOW LEVEL WARM AIR ADVECTION INCREASE AHEAD OF A COLD FRONT.
MODELS HAVE TRENDED FARTHER SOUTH AND A BIT WETTER WITH THE NEXT COLD FRONT MOVING IN OVERNIGHT INTO THURSDAY MORNING AS A SHORT WAVE CYCLES DOWN THE BACKSIDE OF THE UPPER RIDGE OFFSHORE. THIS FRONT DISSIPATES IN THE AFTERNOON AS THE UPPER RIDGE NUDGES BACK OVER THE AREA.
A WINTER STORM WATCH STARTS EARLY THIS EVENING FOR THE HIGHER ELEVATIONS WITHIN THE COLORADO RIVER VALLEY AND ACROSS THE UPPER GUNNISON RIVER VALLEY. A STRONG TROUGH AND ITS ASSOCIATED COLD FRONT WILL CONTINUE MOVING ACROSS THE AREA TODAY AND TONIGHT.
A WEAK UPPER RIDGE WILL NOSE EAST INTO THE PACIFIC NORTHWEST TODAY.
940 AM EST WED NOV 4 2015 UNSEASONABLY WARM WITH HIGH PRESSURE INTO THURSDAY.
A UPPER TROUGH IS NOW ADVANCING INTO THE INTERMOUNTAIN WEST AND THIS WILL BE LIFTING NORTHEAST UP IN THE CENTRAL PLAINS TOMORROW. THE SURFACE REFLECTION OF ITS ASSOCIATED COLD FRONT WILL BE WORKING SOUTHEASTWARD FROM THE PANHANDLE INTO CENTRAL TEXAS. OR A PRE-FRONTAL TROUGH.
952 AM EST WED NOV 4 2015 HIGH PRESSURE OVERHEAD THIS MORNING WILL MOVE OFF THE COAST DURING THE DAY TODAY. A WARM FRONT WILL MOVE INTO THE REGION TONIGHT AND MEANDER AROUND IN THE AREA THROUGH THURSDAY.
621 AM EST WED NOV 4 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY AND WILL MOVE EAST OF THE AREA TONIGHT AND THURSDAY.
DURING THE NIGHT PERSISTENT TROUGHING EXTENDING FROM THE NEBRASKA PANHANDLE TO EASTERN NM CONTINUES TO STREAM MOISTURE-RICH AIR N ACROSS CENTRAL & EASTERN KS. TODAY-THU: A DEEP(!) UPPER TROF THAT IS SITUATED OVER THE WESTERN U. A COLD FRONT WILL THEN SURGE SE ACROSS CENTRAL KS EARLY THU EVENING WITH THE FRONT CROSSING THE MS VALLEY THU NIGHT. THE ARRIVAL TIME OF THE COLD FRONT WILL NO DOUBT BE THE KEY FACTOR IN THE "WINDOW OF OPPORTUNITY" FOR SEVERE CONVECTION BUT AT THIS TIME THE GREATEST SEVERE RISK WOULD BE ALONG & E/SE OF THE TURNPIKE THU AFTERNOON & EVENING. THERE'LL BE A NICE START TO THE WEEKEND AS STRONG HIGH PRESSURE SPREADS SE ACROSS THE KS NEIGHBORHOOD.
1042 AM EST WED NOV 4 2015 AN ANOMALOUS AND SLOW MOVING UPPER LEVEL RIDGE WILL REMAIN OVER THE EASTERN U.
AN AMPLIFIED PATTERN ACROSS THE CONTINENTAL UNITED STATES PLACES A LONG WAVE RIDGE AXIS NORTHWARD FROM THE WESTERN CARIBBEAN INTO EASTERN CANADA. AN AREA OF HIGH PRESSURE OFF THE ATLANTIC COAST WILL BE REINFORCED BY ANOTHER HIGH EMERGING OFF THE MID ATLANTIC COAST OVER THE NEXT COUPLE OF DAYS. THE CONSOLIDATED HIGH PRESSURE SYSTEM WILL THEN SPREAD EASTWARD ACROSS THE ATLANTIC THROUGH THE REMAINDER OF THE WEEK.
1029 AM EST WED NOV 4 2015 HIGH PRESSURE WILL REMAIN IN CONTROL THIS AFTERNOON BEFORE MOVING OFFSHORE TONIGHT AND THURSDAY.
448 AM MST WED NOV 4 2015 FORECAST CONCERNS REVOLVE AROUND THE EVOLUTION OF PRECIPITATION ACROSS THE FORECAST AREA TONIGHT AND THURSDAY AS A LOW PRESSURE SYSTEM MOVES ACROSS CENTRAL HIGH PLAINS REGION.
AREA IS UNDER A LARGE UPPER TROF THIS MORNING. WITH RAIN TO THE EAST AND NOT SEEING MUCH OF A CHANGE THIS AFTERNOON WITH COOLER AIR BUILDING IN ALOFT AND WEAK DIURNAL HEATING TODAY. GENERAL SNOW ACCUMULATIONS IN THE LOWER ELEVATIONS SHOULD BE VERY LIGHT.
555 AM EST WED NOV 4 2015 HIGH PRESSURE OVERHEAD THIS MORNING WILL MOVE OFF THE COAST DURING THE DAY TODAY. A WARM FRONT WILL MOVE INTO THE REGION TONIGHT AND MEANDER AROUND IN THE AREA THROUGH THURSDAY.
/ISSUED 148 AM CST WED NOV 4 2015/ CLOUDY CONDITIONS CONTINUE THIS MORNING WITH TEMPERATURES AVERAGING IN THE LOW TO MID 60S ACROSS MOST LOCATIONS. AFTERNOON HIGH TEMPERATURES TO CLIMB INTO THE MID 70S TODAY WITH OVERNIGHT LOWS IN THE LOW TO MID 60S TONIGHT. SHOWERS AND THUNDERSTORMS TO INCREASE IN COVERAGE ACROSS NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA TONIGHT AS A SURFACE BOUNDARY AND UPPER-LEVEL TROUGH APPROACH THE REGION FROM THE NORTHWEST.
A STRONG PACIFIC LOW PRESSURE SYSTEM WILL BRING MUCH COOLER TEMPERATURES TO SOUTH-CENTRAL ARIZONA TODAY. IT WILL ALSO BRING A CHANCE OF SHOWERS TO THE LOWER ELEVATIONS TODAY AND TONIGHT. MAINLY EAST OF THE LOWER COLORADO RIVER VALLEY. WITH BETTER CHANCES OVER THE HIGHER TERRAIN.
A FEW SHOWERS AND POSSIBLY ISOLATED THUNDERSTORMS OVER THE MOUNTAINS TODAY AS A LOW PRESSURE SYSTEM CONTINUES TO EXIT THE REGION. CLEARING SKIES AND A SLIGHT WARMING TREND FOR THE REMAINDER OF THE WEEK AS WEAK HIGH PRESSURE BEGINS TO INVADE. LONG WAVE UPPER TROUGH REMAINS OVER THE WESTERN CONUS THIS MORNING WITH THE MAIN UPPER LOW CENTERED OVER NEVADA AND THE TROUGH AXIS EXTENDING DOWN OVER SOCAL. ADDITIONAL VORT ENERGY ALONG WITH A 100 KT UPPER JET IS DIVING SOUTH ON THE BACK SIDE OF THE TROUGH. PRECIP THREAT SHOULD END WEDNESDAY NIGHT AS THE TROUGH MOVES EAST OVER THE FOUR CORNERS REGION. THE MEDIUM RANGE MODELS ARE NOW COMING INTO BETTER AGREEMENT WITH A GULF OF ALASKA TROUGH MOVING DOWN OVER CALIFORNIA SUN-MON.
632 AM EST WED NOV 4 2015 WEDGE CONDITIONS ACROSS THE AREA WILL BREAK THURSDAY AS THE CENTER OF HIGH PRESSURE MOVES OFFSHORE. A COLD FRONT WILL CROSS THE REGION OVER THE WEEKEND. MODELS INDICATE WEDGE CONDITIONS LINGERING INTO TONIGHT AS HIGH PRESSURE RIDGES IN FROM THE NORTHEAST.
936 AM EST WED NOV 4 2015 WEDGE CONDITIONS ACROSS THE AREA WILL BREAK THURSDAY AS THE CENTER OF HIGH PRESSURE MOVES OFFSHORE. A COLD FRONT WILL CROSS THE REGION OVER THE WEEKEND.
A MID LEVEL TROUGH IS PASSING TO THE SOUTH OVER THE CARIB/FL STRAITS. AS THE TROUGH MOVES WEST.
320 AM MST WED NOV 4 2015 FORECAST CONCERNS REVOLVE AROUND THE EVOLUTION OF PRECIPITATION ACROSS THE FORECAST AREA TONIGHT AND THURSDAY AS A LOW PRESSURE SYSTEM MOVES ACROSS CENTRAL HIGH PLAINS REGION.
As another mid latitude cyclone approaches from the west, rain chances increase significantly for the tonight period. Models bring the main wave of precipitation into West Central Texas after midnight, as a pacific cold front approaches from the west. (Thursday) The best rain chances will be on Thursday, as the upper trough moves into the southern Rockies and a cold front pushes east across West Central Texas.