Aikyam-Lab/Synoptic-Bench huggingface dataset:
527 AM CST FRI DEC 4 2015 FOR 12Z TAFS /ISSUED 246 AM CST FRI DEC 4 2015/ A QUITE NIGHT WITH TEMPS AT 230 AM IN THE LOW/MID 30S UNDER CLR SKIES AND LIGHT WINDS. IN THE LOW/MID 50S. TONIGHT EXPECT CLR SKIES AND TEMPS IN THE LOW/MID 30S. THE QUITE/DRY WX WILL CONTINUE ON SATURDAY ALONG WITH A LITTLE WARMER TEMPS.
539 AM CST FRI DEC 4 2015 LITTLE SENSIBLE WEATHER OVER IOWA TODAY WITH HIGH PRESSURE SITUATED OVER THE MID OHIO VALLEY AND LOW PRESSURE TROUGH WELL TO THE WEST.
HIGH PRESSURE WILL BUILD IN FROM THE WEST TODAY AND REMAIN IN PLACE THROUGH MID WEEK.
AN UPPER LEVEL LOW REMAINS ANCHORED OVER NOVA SCOTIA AND THE ASSOCIATED TROUGH EXTENDS WEST SOUTHWEST OVER THE GREAT LAKES. WEAK RIDGING OVER THE NORTHERN GULF COAST DRIFTS SLOWLY EASTWARD AND FURTHER WEAKENS AS ANOTHER UPPER LOW OVER TEXAS MOVES EASTWARD. THE UPPER LEVEL LOW AND TROUGHING COMBINED WITH STRONG UPPER LEVEL DIVERGENCE IN THE RIGHT REAR QUADRANT OF AN EXITING 140+ KNOT JET MAX OVER THE SOUTHEAST U. THIS LOW WILL MOVE EAST ALONG THE STATIONARY FRONT OVER THE GULF COAST BRINGING INCREASING CHANCES OF SHOWERS AND STORMS FOR THE FLORIDA PANHANDLE. TEMPERATURES WILL BE SLIGHTLY COOLER THAN WHAT WE HAVE SEEN OVER THE PAST FEW DAYS BUT WILL STILL BE ABOUT AVERAGE FOR THIS TIME OF YEAR.
GUIDANCE CONTINUES TO ADVERTISE A COMPACT UPPER LOW DROPPING INTO THE REGION MID WEEK.
1208 PM CDT MON APR 27 2015 WEAK HIGH PRESSURE WILL BE IN CONTROL OF TODAYS WEATHER IN WHAT SHOULD BE A VERY PLEASANT DAY. THEREFORE PREFERRED THE GUIDANCE VALUES WHICH HAD 30S IN THE LOW LYING LOCATIONS FOR NORTHWEST IA. COLD FRONT IS EXPECTED TO SHIFT SOUTH ACROSS THE FORECAST AREA ON TUESDAY.
209 PM CDT Mon Apr 27 2015 All regional precipitation was confined to Oklahoma and southern Kansas today as an upper level low was gradually shifting across the Texas Panhandle. The center of this low is expected to track directly over the Red River Valley, which will limit rain from affecting southern Missouri the rest of today and into Tuesday. Therefore, for the exception of areas along the Arkansas border, we expect dry weather through Tuesday despite cloud cover and cooler temperatures.
COLD FRONT IS SLOWLY PUSHING IT WAY ACROSS WESTERN AND CENTRAL NORTH DAKOTA. AN UPPER LEVEL TROUGH WILL FINALLY MOVE THROUGH TODAY AND PUSH THE COLD FRONT THROUGH THE FORECAST AREA. THESE CONDITIONS ARE NOT LIKELY TO IMPROVE UNTIL LATER THIS AFTERNOON AS THE COLD FRONT PASSES. TEMPERATURES COULD MAKE A RUN AT THE LOW 30S. THE FORECAST FLOW WILL RETURN TO A MORE PROGRESSIVE ONE BUT LITTLE MOISTURE IS SEEN SO LITTLE CHANGE IS FORECAST FOR THE PRECIPITATION PATTERN THROUGH THE EXTENDED HOWEVER WARMER WEATHER WILL BE ON ITS WAY. MODELS AGREE INITIALLY IN BUILDING A RIDGE ACROSS THE NORTHWEST US WITH A CUTOFF LOW TO THE SOUTH ACROSS OKLAHOMA EXITING THE CENTRAL SECTIONS OF THE COUNTRY ON TUESDAY.
346 PM CDT Mon Apr 27 2015 A closed upper low was nearly stationary over north Texas this afternoon, with a broad rain and cloud shield along its northern and northeast flank across Oklahoma and into southern Kansas. The presence of high clouds would keep low temperatures a few degrees warmer while clear skies would suggest lows in the upper 30s to lower 40s and some potential for valley fog. At this time, would lean toward the slightly cooler temperatures as any clouds look to be very thin and focused over southern Kansas. Tuesday will be slightly warmer in the upper 60s to around 70 with a north breeze and scattered high clouds. Meanwhile a mid/upper ridge builds over the central Rockies and eventually northern plains behind the Great Lakes low.
-KT MID LEVEL DRYING IS WORKING WESTWARD INTO SOUTHEAST CO AROUND THE NRN PERIPHERY OF THE CLOSED LOW. STILL LIKELY TO SEE SOME HEALTHY SNOWFALL RATES THIS MORNING ACROSS THE HIGHER ELEVATIONS OF THE SOUTHEAST MOUNTAINS. \/HODANISH WEAK TROUGHINESS WILL BE OVER THE REGION AS MAIN LOW MOVES OFF TO OUR SOUTHEAST. TEMPS TONIGHT WILL BE ON THE COOL SIDE WITH SOME AREAS ON THE PLAINS TOUCHING THE FREEZING MARK.
346 PM CDT MON APR 27 2015 UPPER LEVEL LOW OVER THE NORTHERN SOUTH PLAINS WILL CONTINUE TO MOVE EAST INTO SOUTHERN OKLAHOMA/NORTHERN TEXAS TONIGHT.
AN UPPER LOW WILL CONTINUE TO SLOWLY MOVE EASTWARD ACROSS OUR TERMINALS, MAINTAINING MVFR TO IFR CONDITIONS FOR MUCH OF THE FORECAST PERIOD. EXPECTING UPPER FORCING TO WEAKEN DURING THE EVENING HOURS FOR ANY CONVECTION, AS THE UPPER LOW MOVES TO THE EAST, WITH -RA REMAINING IN THE FORECAST THROUGH MUCH OF THE NIGHT WITH FOG.
UPPER LEVEL LOW OVER NORTH TEXAS WILL KICK OUT TO THE EAST LATER TONIGHT AND EARLY TUESDAY. A DISTURBANCE EJECTING OUT FROM THE LOW WILL MOVE ACROSS THE FORECAST AREA LATE THIS EVENING AND EARLY OVERNIGHT. UPPER LOW CURRENTLY NEAR THE TX PANHANDLE EXPECTED TO CONTINUE SLOWLY EASTWARD. WITH A GRADUAL WARM UP FOR THE END OF THE WEEK AND INTO THE WEEKEND AS WEAK RIDGING BUILDS IN FROM THE WEST. 13 MODERATE EASTERLY FLOW IS EXPECTED TO PERSIST TODAY AS HIGH PRESSURE REMAINS EAST OF THE REGION. DRAGGING A COLD FRONT THROUGH THE COASTAL WATERS.
302 PM EDT MON APR 27 2015 UPPER LEVEL LOW PRESSURE OVER THE AREA WILL MOVE OFF TO THE SOUTHEAST INTO TUESDAY THEN HIGH PRESSURE OVER LAKE SUPERIOR WILL BUILD SOUTHEAST OVER THE AREA TUESDAY AND WEAKEN.
151 PM EDT MON APR 27 2015 HIGH PRESSURE CONTINUES TO BUILD SOUTH INTO THE REGION. HIGH PRESSURE WILL LINGER THROUGH TUESDAY.
MID AND HIGH LEVEL MOISTURE CONTINUES TO STREAM OVER THE MID SOUTH IN ADVANCE OF AN UPPER LOW OVER THE TEXAS PANHANDLE. UPPER LEVEL RIDGING OVER THE AREA WILL KEEP CHANCES FOR RAIN BELOW MENTIONABLE LEVELS FOR THE REMAINDER OF THE DAY. /ISSUED 415 AM CDT MON APR 27 2015/ GOES IR/WV IMAGERY SHOWED A CLOSED UPPER LOW CENTERED NEAR THE TX/NM BORDER. EXTENSIVE MID AND HIGH CLOUDS FROM THE TX MCS WERE FLOWING INTO THE LOWER MS VALLEY. GIVEN THE RELATIVELY SLOW MOVEMENT OF THE CLOSED LOW.
AS AN UPPER LEVEL LOW PRESSURE SYSTEM CONTINUES TO PUSH EAST LATE IN THE TAF PERIOD.
Wrap around VFR cumulus/stratcumulus clouds should increase from north to south this afternoon and this evening as a cold front surges south this evening. A cold front will move south through all area terminals today with gusty northerly winds developing behind it. /ISSUED 356 AM CDT Mon Apr 27 2015/ The well advertised upper low has formed over NM and is slowly drifting east. A strong cold front has made its way into northern portions of the Permian Basin already this morning. This is a little ahead of schedule so will trend to northerly winds quicker this morning with much cooler conditions expected throughout the day.
STRONG HIGH PRESSURE BUILDING EAST FROM THE PACIFIC WILL BRING MUCH WARMER WEATHER TO NORTHERN AND CENTRAL NEVADA OVER THE NEXT FEW DAYS.
A strong upper level low is currently moving slowly across the southern Plains this morning. Southerly flow ahead of this feature is trying to advect moisture into the forecast area, but persistent northeasterly flow at the surface--courtesy of high pressure over the western Great Lakes--is keeping much of this moisture at bay. Somewhat better chances for showers/isolated thunderstorms will begin to kick in later this afternoon into tonight, as the center of the upper low gets closer to the region. For the rest of the forecast area, a combination of somewhat chilly air aloft and cloud cover moving up from the south will help limit temperatures today and Tuesday, with highs generally around 60 over southwestern Missouri, to the the low to mid 60s over central Missouri, where cloud cover won't be as extensive.
152 PM EDT MON APR 27 2015 A TROUGH WILL MOVE SOUTH ACROSS THE EASTERN GREAT LAKES TODAY.
THIS EVENING THROUGH TUESDAY NIGHT CURRENT SURFACE ANALYSIS SHOWS COLD FRONT STRETCHING FROM NORTHWEST MN TO SOUTH CENTRAL SD AND WESTERN NEB. HIGH PRESSURE IS CENTERED OVER FAR EASTERN MT. UPPER LEVEL ANALYSIS SHOWS LARGE TROF OVER THE CENTRAL CONUS. WITH LOW PRESSURE OVER THE TX PANHANDLE. BUILDING RIDGE IN PLACE OVER THE WEST COAST. MAINLY DRY AND WARMER CONDITIONS CAN BE EXPECTED MIDWEEK. AS HIGH PRESSURE SLOWLY MOVES INTO THE WESTERN DAKOTAS. SKIES WILL BE MOSTLY SUNNY TO PARTLY CLOUDY AS HIGH PRESSURE MOVES ACROSS THE DAKOTAS.
SHORT RANGE MODELS INDICATE A CLOSED OFF UPPER LEVEL LOW SHIFTING EAST ACROSS OKLAHOMA AND NORTH TEXAS TONIGHT KEEPING PRECIP CHANCES ALIVE ACROSS SOUTH CENTRAL AND SOUTHERN PORTIONS OF SOUTHWEST KANSAS INTO EARLY TUESDAY MORNING. BASED ON RADAR TRENDS AND THE PROJECTED PATH OF THE UPPER LEVEL LOW, PERIODS OF LIGHT RAIN WILL BE POSSIBLE ACROSS THE AREA MENTIONED ABOVE THROUGH THE EVENING HOURS. PRECIP CHANCES WILL LINGER ACROSS SOUTH CENTRAL KANSAS INTO THE EARLY MORNING HOURS TUESDAY AS THE UPPER LOW PUSHES FURTHER EAST. TEMPERATURES ARE EXPECTED TO BE BELOW NORMAL TONIGHT AS A PREVAILING NORTHERLY LOW LEVEL FLOW CONTINUES TO DRAW SOMEWHAT COOLER AIR SOUTHWARD INTO WESTERN KANSAS. THE LOWER TO MID 40S(F) ARE LIKELY ACROSS SOUTH CENTRAL KANSAS.
THE SPRAWLING UPPER LEVEL LOW CURRENTLY CENTERED NEAR LUBBOCK WILL TRACK EASTWARD ALONG THE RED RIVER. CLOSER TO DAYBREAK TUESDAY AS WRAPAROUND MOISTURE EVOLVES ON THE BACKSIDE OF THE UPPER LOW ALONG THE RED RIVER. GRAY DAY WITH BREEZY NORTH WINDS AND OFF-AND-ON SHOWERS SPINNING AROUND THE BACKSIDE OF THE DEPARTING UPPER LOW.
315 PM CDT MON APR 27 2015 BROAD HIGH PRESSURE ACROSS THE MIDWEST AND WESTERN GREAT LAKES BROUGHT CLEAR SKIES AND LIGHT N/NE WINDS TO E IOWA/W ILLINOIS THROUGH THIS AFTN. TEMPS WERE IN THE LOW TO MID 60S AND DEWPOINTS WERE IN THE 30S. JUST SLIGHTLY WARMER INTO THE UPPER 60S WITH CONTINUED DRY CONDITIONS.
258 PM EDT MON APR 27 2015 AN UPPER LEVEL LOW WILL PROVIDE UNSETTLED WEATHER AND CLOUDS THROUGH MIDWEEK AS IT MEANDERS NEARBY. LOW TEMPERATURES WILL RANGE FROM MID 30S TO THE LOWER 40S. THE UPPER LOW WILL SHIFT A BIT FURTHER EAST. CLOUDS LINGER TUESDAY NIGHT ALONG WITH A FEW STRAY SHOWERS OR FLURRIES AS THE LOW REMAINS NEARLY STATIONARY OFFSHORE. MEAN LOW PRESSURE WILL CONTINUE TO MEANDER AROUND OUR REGION THROUGH MUCH OF THE FORECAST PERIOD. STRONG LOW PRESSURE IS EXPECTED TO DEVELOP OFF THE MID ATLANTIC COAST LATE THIS WEEK. SCA CONDITIONS MAY DEVELOP LATE IN THE WEEK AND THE WEEKEND AS LOW PRESSURE PASSES WELL SOUTH OF THE WATERS.
334 PM CDT MON APR 27 2015 TONIGHT-TUE: WILL CONTINUE TO LINGER POPS ALONG OK BORDER TONIGHT AS UPPER LOW SLOWLY DRIFTS EAST. LOWS SHOULD BE SLIGHTLY COOLER IN NORTH WITH LESS CLOUDS AND DRIER AIR. RIDGING WILL BE THE RULE ON FRI-SAT. UPPER LOW CONTINUES TO CHURN OVER THE TX PANHANDLE WITH THIS FEATURE EXPECTED TO MOVE VERY SLOW OVER THE NEXT 24 HOURS. BY 12Z TUE THE UPPER LOW WILL BE OVER NORTHEAST TX AND APPROACHING THE ARKLATEX REGION.
THIS ALL COMES AHEAD OF A DEVELOPING LOW IN THE GULF OF MEXICO AND A CUTOFF UPPER LOW OVER NORTH CENTRAL TEXAS. MODELS CONTINUE TO INDICATE THAT THIS LOW WILL DEVELOP THROUGH TONIGHT AND TRACK TO THE EAST THROUGH THE DAY TOMORROW. THE UPPER LOW WILL ALSO TRACK TO THE EAST TOMORROW AND TOMORROW NIGHT OVER NORTHERN MISSISSIPPI/MID-SOUTH.
147 PM MDT MON APR 27 2015 LATEST WV IMAGERY AND RAP ANALYSIS SHOWS LARGE SCALE CLOSED UPPER LOW CENTERED OVER TX PANHANDLE WITH MID LEVEL VORTICITY ROTATING THROUGH OK/SOUTHER KS. GOOD RADIATION CONDITIONS SHOULD ALLOW FOR LOCATIONS IN OUR CWA TO REACH FREEZING (POSSIBLY LOWER) TONIGHT. H5 RIDGE CONTINUES TO BUILD EAST AND TEMPS ALOFT WILL MODERATE A LITTLE. H5/H7 RIDGE BUILDS OVER THE ENTIRE WESTERN PORTION OF THE COUNTRY TUESDAY NIGHT. WITH RIDGE AXIS EXTENDING EASTWARD INTO THE WESTERN PLAINS THRU MIDWEEK. MODELS TREND THIS RIDGE TO FLATTEN.
349 PM EDT MON APR 27 2015 A LOW PRESSURE AREA OVER NOVA SCOTIA WHICH HAS KEPT THE NORTH COUNTRY IN LOW CLOUDS AND LIGHT SHOWERS THE LAST SEVERAL DAY WILL SLOWLY MOVE SOUTHEAST OF NOVA SCOTIA OVERNIGHT AND TUESDAY.
COOLER AND DRIER AIR WILL EVENTUALLY PUT AN END TO THE SVR WX AND PRECIP. EXPECTED LOWS IN THE LOWER 50S. DRAGGING A COLD FRONT THROUGH THE COASTAL WATERS.
STILL EXPECT MORE SUN OVER THE SE HALF OF THE AREA ALONG WITH THE WARMER TEMPS. WITH THE HIGHEST POPS DURING THE DAY ACROSS THE DEVILS LAKE BASIN. SOME 70S ARE CERTAINLY POSSIBLE IN THE WARMER AREAS. ANY REMAINING SHOWERS EARLY TUESDAY WILL END AS MID/UPPER RIDGING BEGINS TO BUILD IN FROM THE WEST.
MORNING FORECAST APPEARS TO BE IN PRETTY GOOD SHAPE AS THE UPPER RIDGE CONTINUES TO BUILD INTO THE NORTHERN ROCKIES TODAY. REMAINDER OF THE FORECAST LOOKS TO BE ON TRACK WITH WARMER CONDITIONS AND MOSTLY CLEAR TO PARTLY CLOUDY SKIES EXPECTED FOR THE NEXT DAY OR TWO.
/ISSUED 326 AM EDT MON APR 27 2015/ OLD FRONTAL BOUNDARY WILL CONTINUE TO PUSH SOUTHWARD TODAY AS HIGH PRESSURE BUILDS IN FROM THE NORTH. CLOUDS BEGIN TO INCREASE OVERNIGHT AS LOW PRESSURE SYSTEM CURRENTLY ACROSS SOUTHERN TEXAS EMERGES INTO THE NORTHERN GULF AND MOVES EASTWARD. THIS LOW PRESSURE SYSTEM BEGINS TO PUSH EAST ALONG THE GULF COAST.
THE COLD FRONT THAT PUSHED THROUGH THIS MORNING WILL STAY STALLED JUST TO THE SOUTH OF OUR COASTAL WATERS.
LOCATED ROUGHLY ALONG THE HIGHWAY 77 CORRIDOR. AN UPPER LOW IS NEARLY STATIONARY ACROSS THE TEXAS PANHANDLE INTO FAR SOUTHWEST OKLAHOMA. THE ABOVE MENTIONED UPPER LOW WILL MOVE EASTWARD ALONG THE RED RIVER OVERNIGHT. SOME WEAK LIFT ASSOCIATED WITH THIS LOW WILL SPREAD INTO THE HILL COUNTRY AND NORTHERN PORTIONS OF THE I-35 CORRIDOR AND WILL RESULT IN A FEW SHOWERS AND POSSIBLY A STRAY THUNDERSTORM OVERNIGHT. THE UPPER LOW CONTINUES TO MOVE EASTWARD ON TUESDAY AS A TRAILING TROUGH AXIS MOVES INTO SOUTH CENTRAL TEXAS.
TEMPERATURES RANGE FROM THE MID 80S TO THE LOWER 90S.
304 PM MST MON APR 27 2015 LINGERING LOW LEVEL MOISTURE FROM THE EXITING LOW PRESSURE SYSTEM TO OUR EAST WILL ALLOW FOR A FEW AFTERNOON SHOWERS OVER EASTERN ARIZONA THROUGH TUESDAY. WITH TEMPERATURES ACROSS THE LOWER DESERTS APPROACHING THE 100 DEGREE MARK DURING THE LATER PARK OF THE WEEK. TEMPERATURES HAVE WARMED UP FAIRLY STEADILY TODAY, BECOMING WARMER THAN THE PREVIOUS DAY, AND INCHING TOWARDS SEASONAL NORMAL. WINDS HAVE GENERALLY BEEN MUCH MORE CALM ACROSS THE CENTRAL DESERTS AND HAVE STILL HELD ON TO A STRONG NORTHERLY GRADIENT ALONG THE LOWER COLORADO RIVER VALLEY. BY TUESDAY THE NORTHERLY FLOW ALOFT WILL SHIFT TO A NORTHEAST AND EASTERLY COMPONENT WITH THE RIDGE OF HIGH PRESSURE MOVING INTO THE SOUTHWEST.
1226 PM CDT MON APR 27 2015 UPDATED THE FORECAST THIS MORNING TO SIGNIFICANTLY REDUCE HIGH TEMPERATURES IN THE NORTH CENTRAL AND FAR WESTERN PORTION OF THE CWA WHERE THE COLD FRONT HAS PUSHED THROUGH. THE REGION CURRENTLY SITS BETWEEN HIGH PRESSURE TO THE EAST AND A WEAK TROUGH/STATIONARY FRONT TO THE WEST. THE TROUGH IS FINALLY EXPECTED TO PUSH EAST LATER TODAY AND TONIGHT. THE HIGHEST POPS REMAIN ACROSS THE NORTHERN CWA TONIGHT. THE FAR NORTHWEST CWA MAY DROP INTO THE LOW 30S TONIGHT DUE TO CLEARING SKIES BEHIND THE FRONT.
620 PM EDT MON APR 27 2015 AVIATION HIGH PRESSURE WILL BRING CLEARING SKIES AND DIMINISHING WINDS TONIGHT.
SKIES WILL CLEAR THIS AFTERNOON AS THE HIGH PRESSURE RIDGE PUSHES THE MOISTURE NORTHWARD AND OUT OF THE AREA.
522 PM EDT MON APR 27 2015 HIGH PRESSURE CONTINUES BUILDING INTO THE REGION AND WILL LINGER THROUGH TUESDAY.
643 PM EDT MON APR 27 2015 UPPER LEVEL LOW PRESSURE OVER THE AREA WILL MOVE OFF TO THE SOUTHEAST INTO TUESDAY THEN HIGH PRESSURE OVER LAKE SUPERIOR WILL BUILD SOUTHEAST OVER THE AREA TUESDAY AND WEAKEN.
1234 PM CDT MON APR 27 2015 HIGH PRESSURE FROM WESTERN HUDSON BAY INTO NEBRASKA WILL MOVE LITTLE TODAY WITH LITTLE CHANGE IN THE WEATHER FROM YESTERDAY.
258 PM CDT MON APR 27 2015 THE FORECAST AREA WAS LOCATED UNDER A SHORT WAVE RIDGE EARLY THIS AFTERNOON WITH MAIN WEATHER FEATURES WELL NORTH AND SOUTH OF THE AREA. THIS TREND IS EXPECTED TO CONTINUE THROUGH TUESDAY WITH A NORTHERN STREAM TROUGH LIFTING TOWARD THE GREAT LAKES AND SOUTHERN STREAM CLOSED LOW TRACKING TOWARD THE LOWER MISSISSIPPI VALLEY. HAVE INCLUDED A SLIGHT POP FOR NORTHWESTERN PARTS OF THE AREA TUESDAY AFTERNOON AS TRAILING END OF THE UPPER TROUGH MOVES ACROSS BUT INSTABILITY AND MOISTURE LOOK TO BE QUITE LIMITED.
CEILINGS WILL LIKELY LOWER SOME AS THE LOWER LEVEL INVERSION STRENGTHENS THROUGH NOCTURNAL COOLING AT THE TOP OF THE CLOUDS LAYER. THIS EVENING AND TONIGHT SOUTHEAST MICHIGAN STILL UNDER THE INFLUENCE OF EXPANSIVE MID LEVEL LOW PRESSURE NOW CENTERED OFF THE NEW ENGLAND COAST. LOWS A TOUCH WARMER TONIGHT.
1031 AM PDT MON APR 27 2015 High pressure will build into the region today and linger through Tuesday for a couple of days of nice weather.
A WEAK LOW PRESSURE SYSTEM WILL APPROACH THE WEST COAST. THIS LOW WILL BRING COOLER TEMPERATURES AND A GRADUAL INCREASE IN THE NIGHT AND MORNING CLOUDS AND FOG. HGTS WILL BE FEW DM HIGHER AS THE AXIS OF THE UPPER RIDGE MOVES OVER SRN CA.
CEILINGS ARE EXPECTED TO SLOWLY LOWER THROUGH THE AFTERNOON AS DIURNAL INFLUENCES WITH UPPER LEVEL LOW INCREASES PRECIPITATION. /ISSUED 359 AM CDT MON APR 27 2015/ AS THE UPPER LOW NEARS THE AREA TODAY WE WILL SEE MORE WIDESPREAD RAIN SHOWER AND THUNDERSTORM CHANCES. THIS LOW WILL TRACK DIRECTLY OVER THE AREA TODAY. THE MAIN DEFORMATION ZONE FROM THIS LOW WILL BE LOCATED TO THE NORTH OF THE AREA IN THE TEXAS PANHANDLE. COOL AND DAMP LOWER ATMOSPHERE EARLY TUESDAY ON THE BACK-SIDE OF THE DEPARTING UPPER LOW ALONG THE RED RIVER TO OUR EAST. AIRMASS WILL GRADUALLY DRY LATER TUESDAY AS THE UPPER LOW PULLS FURTHER TO THE EAST.
250 PM CDT MON APR 27 2015 A CLOSED UPPER LOW OVER TEXAS WILL MOVE EASTWARD TONIGHT AND BECOME AN OPEN WAVE BY LATE TUESDAY AS IT INTERACTS WITH THE WESTERN EDGE OF TROUGHS TO THE NORTH AND NORTHEAST OF OUR AREA.
300 PM MDT MON APR 27 2015 AS THE RECENT LOW PRESSURE SYSTEM CONTINUES TO TRACK EASTWARD ACROSS TX. A RIDGE OF HIGH PRESSURE BUILDS OVER THE INTERMOUNTAIN WEST ON TUESDAY.
ANOTHER DISTURBANCE EMBEDDED WITHIN THE MAIN UPPER LOW HAS GENERATED CONVECTION. SOME OF THESE STORMS COULD BECOME SEVERE GIVEN THE DEEP LAYER FORCING AND STRONG ISENTROPIC LIFT AHEAD OF THE UPPER LOW. THE UPPER LOW IS FCST TO MOVE DIRECTLY OVHD. DRIVING A COLD FRONT THROUGH THE REGION AND EFFECTIVELY ENDING THUNDER FOR THE REGION. MOISTURE WILL WRAP AROUND THE UPPER LOW AND KEEP SHWRS IN MAINLY OVER THE NRN HALF OF THE ARKLATEX UNTIL THE UPPER LOW FINALLY MOVES E OF THE REGION LATE TUESDAY NIGHT.
HIGH PRESSURE LOCATED NW OF THE REGION WILL CONTINUE TO PRODUCE FAIR WX AND NNE SFC WINDS. COLD FRONTAL BOUNDARY HAS SUNK DOWN ALONG GULF COAST. UPPER LOW WAS CENTERED NEAR TUCUMCARI NEW MEXICO AT 04Z. ENERGY ASSOCATED WITH UPPER LOW HAS FIRED OFF THUNDERSTORMS ACROSS EASTERN TEXAS AND EASTERN OKLAHOMA.
341 PM CDT MON APR 27 2015 CONDITIONS APPEAR TO REMAIN FAVORABLE FOR ADDITIONAL SOUTHEAST TEXAS SHOWER/THUNDERSTORM DEVELOPMENT DURING THE REMAINING AFTERNOON AND EARLY EVENING HOURS AHEAD OF A COLD FRONT THAT WILL MOVE THROUGH THE AREA TONIGHT. THIS PATTERN WILL SET THE STAGE FOR MUCH COOLER TEMPERATURES FOR MUCH OF THE REMAINDER OF THE WEEK.
THIS EVENING AND TONIGHT SOUTHEAST MICHIGAN STILL UNDER THE INFLUENCE OF EXPANSIVE MID LEVEL LOW PRESSURE NOW CENTERED OFF THE NEW ENGLAND COAST. LOWS A TOUCH WARMER TONIGHT.
334 PM CDT MON APR 27 2015 HIGH PRESSURE BUILDING SOUTH ACROSS THE NORTHERN PLAINS. MEANWHILE AN INVERTED TROUGH PERSISTS ALONG THE FRONT RANGE INTO WESTERN S DAKOTA. A LOW PRESSURE SYSTEM CONTINUES TO SLOWLY MOVE ACROSS THE SOUTHERN PLAINS TOWARDS THE SOUTHEAST CONUS. THE INVERTED TROUGH TO THE NORTHWEST WILL BEGIN TO PUSH EAST/SOUTHEAST OVERNIGHT INTO TOMORROW. TOMORROW THE TROUGH WILL CONTINUE TO PUSH SE ACROSS THE CWA. AN AMPLIFIED UPPER RIDGE AT THIS TIME WILL EXTEND FROM THE DESERT SOUTHWEST INTO SASKATCHEWAN CANADA WHILE AN AMPLIFIED TROUGH EXTENDS FROM THE GREAT LAKES REGION INTO THE LOWER MISSISSIPPI VALLEY.
257 PM CDT MON APR 27 2015 HIGH PRESSURE DOMINATING CENTRAL ILLINOIS AGAIN FOR TONIGHT. NORTHERLY WINDS WILL BECOME LIGHT AND SOMEWHAT VARIABLE TONIGHT AS THE RIDGE AXIS MOVES OVER THE REGION.
MUCH DRIER AIR FINALLY MOVING INTO THE WESTERN ZONES AS DEWPOINTS HAVE FALLEN INTO THE LOWER 50S. BUT INCREASE IN SPEEDS TUESDAY MORNING AS A COLD FRONT MOVES THROUGH THE REGION. MVFR CONDITIONS EXPECTED TO DEVELOP IN RESPONSE TO A COLD FRONT NEAR THE END OF THE TAF PERIOD. CONCUR WITH THE GFS DETERMINISTIC THAT AN UPPER LOW WILL MOVE SLOWLY EWD ACRS NRN TX/OK DRG THE PERIOD. AS THE FOREGOING UPPER LOW MOVES EAST OF THE REGION TUESDAY.
322 PM CDT MON APR 27 2015 A COLD FRONT CURRENTLY BISECTING THE REGION FROM THE NE TO THE SW WILL SLOWLY PUSH EASTWARD TONIGHT. TO THE LOWER 30S BY THE AFTERNOON.
150 PM EDT MON APR 27 2015 AVIATION A HIGH PRESSURE RIDGE WILL REMAIN IN CONTROL OF THE WEATHER PATTERN THROUGH THE UPCOMING WEEK AND PRODUCE FAIR WEATHER. HIGH PRESSURE WILL CONTINUE TO BRING FAIR AND SEASONABLY COOL WX EARLY THIS WEEK. SOME PATCHY FROST IS POSSIBLE DURING THE EARLY MORNING HOURS TUESDAY WITH NEAR CALM TO CALM WINDS AND THE RIDGE IN PLACE. HIGH PRESSURE WILL PRODUCE FAIR WX WITH A MIX OF SUN AND CLOUDS TUESDAY.
REMAINING PRECIP ACROSS CENTRAL OK WILL SLOWLY TRANSITION S/SE AS THE H5 LOW TRACKS ALONG THE RED RIVER VALLEY AND THE WARM FRONT DRIFTS BACK SOUTH. WITH A BROAD RIDGE EXTENDED ACROSS THE LENGTH OF THE SRN CONUS. BUT PRECIP CHANCES LOOK POSSIBLE TO RETURN BY MON AS A COLD FRONT MOVES IN OFF THE CENTRAL PLAINS.
143 PM CDT Mon Apr 27 2015 Upper low centered west of Childress will meander around W TX before slowly wobbling to the east. An upper ridge over the western U. will build in behind the low and remain over the area the rest of the week. This ridge will result in warmer and dryer wx for the region. Currently have a strong cold front moving through the area today with a north wind spreading across the CWA. and Tatum should drop into the 30s the next couple of night but expecting they will stay above freezing.
1129 AM MDT MON APR 27 2015 MID LEVEL DRYING IS WORKING WESTWARD INTO SOUTHEAST CO AROUND THE NRN PERIPHERY OF THE CLOSED LOW. STILL LIKELY TO SEE SOME HEALTHY SNOWFALL RATES THIS MORNING ACROSS THE HIGHER ELEVATIONS OF THE SOUTHEAST MOUNTAINS. \/HODANISH WEAK TROUGHINESS WILL BE OVER THE REGION AS MAIN LOW MOVES OFF TO OUR SOUTHEAST. TEMPS TONIGHT WILL BE ON THE COOL SIDE WITH SOME AREAS ON THE PLAINS TOUCHING THE FREEZING MARK.
HIGH PRESSURE BUILDING IN AND TEMPERATURES ON THEIR WAY TO A DEGREE OR TWO WARMER THAN YESTERDAY IN MOST PLACES. BECAUSE OF THE SURFACE RIDGING AND A DEEP NORTHERLY FLOW. AS AN UPPER LOW CURRENTLY JUST SOUTH OF NOVA SCOTIA CONTINUES TO WOBBLE OFF THE NEW ENGLAND COAST. UPPER LOW CURRENTLY OVER NEW MEXICO WILL DRIFT EAST INTO THE LOWER MISSISSIPPI VALLEY.
245 PM MDT MON APR 27 2015 SHOWERS ARE WINDING DOWN ACROSS SOUTHERN CO AS THE UPPER LOW CONTINUES TO PULL AWAY TO THE EAST INTO TX/OK. SOME RESIDUAL ENERGY DROPPING DOWN THE WEST SIDE OF THE UPPER LOW MAY HELP KEEP SOME ISOLATED SHOWERS GOING ALONG THE CONTINENTAL DIVIDE THROUGH THE NIGHT. THIS MAY HELP TO KEEP TEMPERATURES JUST ABOVE FREEZING FOR NORMAL COLD POCKETS ALONG THE I-25 CORRIDOR. THE PALMER DIVIDE AND RATON RIDGE MAY SEE JUST ENOUGH CLEARING TOWARDS MORNING TO SEE TEMPERATURES HIT THE FREEZING MARK. AND 30S AND 40S FOR THE HIGHER MOUNTAINS.
404 PM MDT MON APR 27 2015 AS THE RECENT LOW PRESSURE SYSTEM CONTINUES TO TRACK EASTWARD ACROSS TX. A RIDGE OF HIGH PRESSURE BUILDS OVER THE INTERMOUNTAIN WEST ON TUESDAY.
Much warmer Tuesday. Tuesday looks to be an even warmer day, with temperatures rising notably, as high as 15 to 20 degrees above normal. The warm spot should end up being along the lower Salmon and Snake River where lower 90s are possible in Riggins. Valleys will cool quickly under clear skies both tonight and Tuesday night, but expect thermal belts in the terrain where warmer temperatures and lower humidities will remain overnight.
EARLY MORNING WATER VAPOR IMAGERY INDICATES A WELL-DEFINED UPPER LOW MEANDERING SLOWLY EAST OVER THE SOUTHERN HIGH PLAINS. WITH THE UPPER LOW TRACKING EAST TODAY ACROSS OKLAHOMA AND MAKING LITTLE TO NO NORTHWARD JOG.