Aikyam-Lab/Synoptic-Bench huggingface dataset:
546 AM EST TUE DEC 29 2015 A WEAK COLD FRONT WILL MOVE EAST OF THE AREA TODAY. A WAVE OF LOW PRESSURE CROSSES WEDNESDAY. LOW PRESSURE OVER THE GREAT LAKES WILL CONTINUE TO MOVE NORTHWARD AND INTO CANADA TODAY. COOL WEAK HIGH PRESSURE WILL START TO BUILD INTO THE REGION BY LATE THIS AFTERNOON. THIS WILL DRY US OUT AND BRING SLIGHTLY COOLER TEMPERATURES IN FOR TONIGHT.
UPDATED AVIATION DISCUSSION HIGH PRESSURE WILL PROVIDE DRY CONDITIONS THE REST OF THE WEEK AND INTO THE WEEKEND. UPPER TROUGH HAS SHIFTED EAST OVER THE LOWER COLORADO RIVER VALLEY WITH A DRY NNW FLOW ALOFT BEHIND IT. A S/WV TROUGH OFF THE PACNW COAST IS EXPECTED TO DIVE SOUTHEAST OVER NEVADA TUESDAY NIGHT FOLLOWED BY ANOTHER WAVE FROM THE NORTH ON WEDNESDAY.
429 AM CST TUE DEC 29 2015 A FAIRLY SHARP UPPER LEVEL TROUGH. CURRENTLY CROSSING THE LOWER COLORADO RIVER VALLEY BETWEEN YUMA AND BLYTHE. A CHILLY NIGHT WILL FOLLOW IN THE WAKE OF THE UPPER TROUGH PASSAGE.
Prolonged, widespread freezing fog likely beginning. The trough of low pressure continues to linger over the region today. Instability associated with the trough will cause isolated to scattered snow showers. The trough shifts off to the east on Wednesday causing the upper level flow to become northerly.
639 AM EST TUE DEC 29 2015 WARMING TEMPERATURES OVERNIGHT WILL CHANGE ANY LINGERING FREEZING RAIN TO PLAIN RAIN NORTH OF INTERSTATE 80 BY MID MORNMING.
1003 AM EST TUE DEC 29 2015 LOW PRESSURE WILL KEEP UNSETTLED WEATHER IN THE REGION THROUGH MID WEEK.
AFTER THE SYSTEM MOVES EASTWARD LATE TUESDAY, COOLER AND DRIER WEATHER WILL SETTLE IN AHEAD OF THE NEXT WINTER SYSTEM FORECAST TO AFFECT THE REGION AROUND THE START OF THE NEXT WORK WEEK. A FAST MOVING LOW PRESSURE SYSTEM WILL PUSH ACROSS THE SOUTHERN HALF OF THE STATE TODAY BRINGING A CHANCE OF LIGHT RAIN/SNOW SHOWERS MAINLY FROM THE MOGOLLON RIM SOUTH. TEMPERATURES WILL RUN WELL BELOW NORMAL TODAY AND WEDNESDAY BEHIND THE COLD FRONT.
LIGHT NORTHWEST TO NORTH WINDS ALONG THE COAST AND OVER THE GULF WILL BE TURNING TO THE EAST TODAY AND SURGE OF ELEVATED MOISTURE OVER-RUNNING THIS LOW LEVEL COOL AIR WILL LEAD TO INCREASING CLOUDINESS THAT ALSO GETS THICKER. TEMPERATURES TODAY SHOULD ONLY MAKE IT INTO THE LOWER TO MID 50S FOR HIGHS.
A CHANGE IN AIRMASS HAS OCCURRED ACROSS THE REGION BEHIND A COLD FRONT THAT HAS MOVED INTO GEORGIA. THIS FRONT WILL BECOME NEARLY STATIONARY AND BEGIN TO MOVE BACK TO THE NORTH AS A TROUGH DIGS INTO THE SOUTHERN PLAINS TONIGHT.
WARM FRONT WILL DEVELOP JUST OFF THE COAST WITH MOISTURE INCREASING OVER TOP THE BOUNDARY. WEAK HIGH PRESSURE OVER THE S PLAINS THROUGH E TX THIS MORNING WILL MOVE EAST LATER TODAY AND TONIGHT.
357 AM MST TUE DEC 29 2015 AN UPR LEVEL TROF WL BE MOVING ACRS THE STATE TODAY AND THIS EVENING. THERE WL STILL BE ENOUGH MOISTURE OVR THE AREA FOR SNOW SHOWERS OVR THE HIGHER TERRAIN. TEMPS TODAY SHOULD GENERALLY BE A LITTLE COOLER THAN YESTERDAY.
/ISSUED 259 AM CST TUE DEC 29 2015/ THE LOW PRESSURE SYSTEM THAT BROUGHT SHOWERS AND THUNDERSTORMS YESTERDAY IS NOW LOCATED NEAR CHICAGO ILLINOIS WITH THE TRAILING COLD FRONT LINGERING ACROSS EAST TENNESSEE. BOTH THE NAM AND RAP MODELS SHOW THE LOW CLOUDS HANGING AROUND THE MIDSOUTH TODAY AS LOW LEVEL MOISTURE WILL BE TRAPPED UNDERNEATH AN INVERSION. LOW PRESSURE WILL DEVELOP ALONG THE FRONT.
433 AM CST TUE DEC 29 2015 CLOSED UPPER LOW OVER THE SOUTHWESTERN STATES THIS MORNING WILL CONTINUE MOVING EAST TODAY AND THEN WEAKEN INTO AN OPEN WAVE AS IT TRACKS ACROSS THE FOUR CORNERS REGION AND THE CENTRAL AND SOUTHERN ROCKIES BY THIS AFTERNOON. THIS SHORT WAVE TROUGH WILL APPROACH THE PANHANDLES BY 00Z WEDNESDAY AND BRING LIGHT SNOW TO THE FORECAST AREA BY LATE TODAY INTO TONIGHT.
WARM FRONT WILL DEVELOP JUST OFF THE COAST WITH MOISTURE INCREASING OVER TOP THE BOUNDARY. LIGHT NORTHWEST TO NORTH WINDS ALONG THE COAST AND OVER THE GULF WILL BE TURNING TO THE EAST TODAY AND SURGE OF ELEVATED MOISTURE OVER-RUNNING THIS LOW LEVEL COOL AIR WILL LEAD TO INCREASING CLOUDINESS THAT ALSO GETS THICKER. TEMPERATURES TODAY SHOULD ONLY MAKE IT INTO THE LOWER TO MID 50S FOR HIGHS.
For these locations, temperatures will be around 5 degrees warmer compared to yesterday.
SLOW-MOVING TROUGH IS IN PLACE OVER AERODROMES DURING PERIOD.
A RETURN TO MVFR EXPECTED THIS EVENING WITH LIGHT RAIN RETURNING TO THE TAF SITES AS EARLY AS 03Z BUT MORE LIKELY AFTER 06Z AS THE GULF FRONT BEGINS TO RETREAT AND SOUTHWEST FLOW ALOFT BRINGS WARMER AIR OVER THE COOLER SURFACE IN PLACE. RAIN CHANCES RETURN OVERNIGHT AS YESTERDAYS COLD FRONT NOW ORIENTED OVER THE EASTERN GULF RETREATS WEST AND NORTHWEST INTO THE NORTH-CENTRAL GULF AND EXTENDING SOUTHWEST INTO OLD MEXICO.
413 AM MST TUE DEC 29 2015 INTERESTING MID WINTER PATTERN THROUGH WEDNESDAY WITH BROAD TROUGH OVER THE INTERMOUNTAIN WEST WITH EMBEDDED SHORT WAVES. MID LEVEL CIRCULATION OVER THE LOWER COLORADO RIVER BASIN MOVES OFF INTO NEW MEXICO ON TUESDAY. THE MID LEVEL CIRCULATION ASSOCIATED WITH THE TROUGH DROPS SOUTHEAST TOWARD THE NRN UTAH PANHANDLE WEDNESDAY AFTERNOON.
352 AM MST TUE DEC 29 2015 A RATHER DIFFUSE UPPER LEVEL TROUGH WILL MOVE ACROSS THE AREA LATER THIS AFTN THRU TONIGHT. APPEARS ONLY AFFECT FM THIS SURGE WILL BE SLIGHTLY COLDER TEMPS WITH READINGS MAINLY IN THE LOWER TO MID 20S EXCEPT ALONG THE SOUTH PLATTE RIVER VALLEY WHERE HIGHS WILL BE IN THE MID TO UPPER TEENS DUE TO STG INVERSIONS.
RAIN CHANCES RETURN OVERNIGHT AS YESTERDAYS COLD FRONT NOW ORIENTED OVER THE EASTERN GULF RETREATS WEST AND NORTHWEST INTO THE NORTH-CENTRAL GULF AND EXTENDING SOUTHWEST INTO OLD MEXICO.
MID LEVEL CLOUD COVER SHOULD DEVELOP THROUGH THE MORNING AS H5 S/W TROUGH ADVECTS TOWARDS THE AREA. CHANCES OF RAIN ARE EXPECTED TO PERSIST THROUGH WEDNESDAY ACROSS PRIMARILY THE COASTAL PLAINS AS MODEST COASTAL TROUGHING EXTENDS NORTHWARD FROM THE LOWER TX COAST AND ADDITIONAL MINOR DISTURBANCES ALOFT ADVECT ACROSS THE AREA.
BUT THIS LOWER CLOUD COVER SHOULD BURN OFF QUICKLY INTO LATE MORNING WITH PLENTY OF HEATING EXPECTED TODAY. DEEP LAYER SUBTROPICAL RIDGE EXTENDING FROM THE ATLANTIC OVER FLORIDA WILL KEEP VERY WARM AND DRY CONDITIONS IN PLACE WITH RAIN CHANCES REMAINING OUT OF THE FORECAST AND HIGHS EXPECTED IN THE LOW-MID 80S (NEAR RECORDS). GENTLE TO MODERATE S/SE BREEZE WILL PREVAIL OVER THE LCL ATLC AS A DEEP LYR RIDGE AXIS EXTENDING FROM BERMUDA.
A FAST MOVING SYSTEM WILL BRING SCATTERED RAIN AND SNOW SHOWERS TO THE AREA TODAY ALONG WITH COOLER TEMPERATURES. AN UPPER LOW MOVING ACROSS NORTHERN ARIZONA THIS MORNING WAS BRINGING SOME LIGHT SHOWERS TO THE AREA. THE UPPER LOW WILL ALSO BRING ANOTHER SHOT OF COLDER AIR WITH PROJECTED HIGH TEMPERATURES TODAY ABOUT 4 TO 8 DEGREES LOWER THAN YESTERDAY. MODELS MOVE THE LOW EAST OF THE AREA BY LATE THIS AFTERNOON WITH SKIES CLEARING FROM WEST TO EAST. WARMER DAYTIME TEMPERATURES CAN BE ANTICIPATED STARTING WEDNESDAY THROUGH THE WEEKEND.
Northerly winds behind the exiting system yesterday helped to dry out the lower-levels of the atmosphere, and as a result temperatures are cooler in the valley with patchy frost where the winds are light. Some flurries may linger along the northern Sierra Crest at times, but cool and dry weather expected to be prevalent over interior NorCal during the second half of the week as the upper air pattern transitions to a strong Rex-block with the high over the northern Rockies and the low over the Great Basin.
AFTER SOME PATCHY FREEZING FOG AND LOW CLOUDS ACROSS CENTRAL AND SOUTHEAST AREAS EARLY THIS MORNING. AN UPPER LEVEL TROUGH WILL CROSS FROM THE WEST TODAY WITH SCATTERED TO ISOLATED LIGHT SNOW SHOWERS AREA WIDE.
TODAY THROUGH WEDNESDAY NIGHT CURRENT SURFACE ANALYSIS SHOWS LOW PRESSURE OVER NORTHEAST WY. WITH WEAK COLD FRONT SAGGING SOUTHEAST ACROSS NORTHERN AND WESTERN PORTIONS OF THE CWA RIGHT NOW. UPPER LEVEL ANALYSIS SHOWS THE LOW QUICKLY MOVING NORTHEAST THROUGH THE GREAT LAKES REGION. WITH LONG WAVE TROF DIGGING SOUTH ACROSS THE WESTERN CONUS. COLD AND SOMEWHAT UNSETTLED WEATHER IS EXPECTED OVER THE NEXT COUPLE OF DAYS AS TROF SETTLES INTO THE CENTRAL CONUS. WEAK DISTURBANCES WITHIN THE TROF WILL BRING A GOOD DEAL OF CLOUD COVER WITH CHANCES FOR LIGHT SNOW/FLURRIES OVER PORTIONS OF THE FORECAST AREA. ONLY A FEW FLURRIES LOOK POSSIBLE ACROSS FAR NORTHEAST WY AND FAR NORTHWEST SD TONIGHT AS WEAK LOW PRESSURE ALOFT DEVELOPS OVER MT. THE LOW OVER MT WILL WEAKEN AND MOVE EAST ACROSS THE DAKOTAS WEDNESDAY AFTERNOON AND NIGHT.
1034 AM EST TUE DEC 29 2015 COOLER AND DRIER WEATHER WILL ARRIVE TODAY IN THE SOUTHWESTERLY FLOW BEHIND A COLD FRONT.
RAIN AREA WILL LIFT NW TONIGHT AS NEXT SHORT WAVE TROUGH ALOFT MOVES ACROSS THE PLAINS.
HIGH PRESSURE WILL REMAIN OVER THE AREA THIS MORNING. ANOTHER STORM SYSTEM WILL BRING A BRIEF PERIOD OF RAIN AND MOUNTAIN SNOW LATE THIS AFTERNOON THROUGH WEDNESDAY MORNING BEFORE HIGH PRESSURE RETURNS FOR THE REMAINDER OF THE WEEK. HIGH PRESSURE REMAINS OVER THE EAST PACIFIC THIS MORNING. THE NEXT SYSTEM APPROACHING THE AREA IS CLEARLY VISIBLE IN WV AND IR SAT THIS MORNING OF THE COAST OF BRITISH COLUMBIA AS IT MOVES DOWN THE EAST SIDE OF THE RIDGE.
WARMER AIR WILL ONCE AGAIN OVERSPREAD THE AREA TONIGHT AND WEDNESDAY. ANOTHER FAST MOVING SYSTEM WILL ACCOMPANY THE PUSH OF WARMER AIR AND BRING MORE SHOWERS WEDNESDAY.
615 AM CST TUE DEC 29 2015 FOR 12Z TAFS /ISSUED 353 AM CST TUE DEC 29 2015/ LATEST WATER VAPOR IMAGERY SHOWS THE CLOSED UPPER LOW CURRENTLY OVER THE GREAT LAKES REGION. AND A SURFACE COLD FRONT WAS TRAILING SOUTHWARD ALONG THE APPALACHIAN MOUNTAIN RANGE AND INTO THE EASTERN GULF OF MEXICO. A SECOND UPPER TROUGH WAS LOCATED ALONG THE WESTERN CONUS. THE DRY AND COOLER AIR HAS FILTERED IN ACROSS THE TN VALLEY. THE COLD FRONT WILL BECOME STALLED JUST EAST OF THE APPALACHIANS THIS AFTERNOON. AS THE PARENT UPPER LOW WEAKENS CONSIDERABLY. AND THE SUBTROPICAL RIDGE BEGINS TO BUILD SLIGHTLY WESTWARD. THE UPPER TROUGH OVER THE WEST WILL SHIFT EAST.
723 AM EST TUE DEC 29 2015 WARMING TEMPERATURES OVERNIGHT WILL CHANGE ANY LINGERING FREEZING RAIN TO PLAIN RAIN NORTH OF INTERSTATE 80 BY MID MORNING.
644 AM EST TUE DEC 29 2015 COOLER AND DRIER WEATHER WILL ARRIVE TODAY IN THE SOUTHWESTERLY FLOW BEHIND A COLD FRONT.
353 AM PST TUE DEC 29 2015 HIGH PRESSURE WILL PROVIDE DRY CONDITIONS THE REST OF THE WEEK AND INTO THE WEEKEND. UPPER TROUGH HAS SHIFTED EAST OVER THE LOWER COLORADO RIVER VALLEY WITH A DRY NNW FLOW ALOFT BEHIND IT. A S/WV TROUGH OFF THE PACNW COAST IS EXPECTED TO DIVE SOUTHEAST OVER NEVADA TUESDAY NIGHT FOLLOWED BY ANOTHER WAVE FROM THE NORTH ON WEDNESDAY.
The low clouds will have an impact on temperatures through the period. The gusty west southwest winds have been advecting cooler, drier air eastward across our area through the night, and this will likely continue through much of the morning. The period will start with an upper level trough oriented from southeastern Canada across the Great Lakes into the Central Plains. This trough is forecast to shift east of the region late in the week, resulting in a predominantly northwest flow pattern across the forecast area. A blocking pattern across the western U.
Currently have some patchy freezing fog across portions of southeast New Mexico and northern Permian Basin early this morning. Forecast models indicate low cigs developing across northern half of the region later this morning as an upper trough passes to the north. Areas of freezing fog has formed in Southeast New Mexico and the Northwest Permian Basin. Sfc obs indc that areas of freezing fog has formed in portions of Southeast New Mexico and the Northwest Permian Basin. A trof currently moving into the Intermountain West will swing across the High Plains this aftn/evening.
/ISSUED 230 AM CST TUE DEC 29 2015/ The upper low that brought record flooding rainfall and some winter weather to our area the past few days has now rocketed up into the Great Lakes region this morning. Predominant ridging in the surface pattern and boundary layer RH suggest below average temps for highs the next few days. Broad cyclonic flow over the western 2/3rds of the nation will prevail for much of the week before a transition to more of a blocking pattern for the end of the week. The aforementioned blocking pattern for the end of the week will be a dry pattern for us.
IN THE LOW TO MID LEVELS OF THE ATMOSPHERE. AN ATLANTIC RIDGE OF HIGH PRESSURE WILL EXTEND ACROSS CENTRAL FLORIDA THIS AFTERNOON. A RIDGE OF HIGH PRESSURE WILL AMPLIFY OVER THE BAHAMAS TODAY.
557 AM EST TUE DEC 29 2015 WARMING TEMPERATURES OVERNIGHT WILL CHANGE ANY LINGERING FREEZING RAIN TO PLAIN RAIN NORTH OF INTERSTATE 80 BY MID MORNMING.
632 PM EST SUN DEC 6 2015 HIGH PRESSURE REMAINS IN CONTROL THROUGH MONDAY.
822 PM CST SUN DEC 6 2015 LATEST SATELLITE IMAGERY SHOWS LOW CLOUDS CONTINUE TO INCREASE/SPREAD INTO THE MID STATE THIS EVENING AS A WELL-DEFINED UPPER LOW MOVES ACROSS ILLINOIS.
616 PM EST SUN DEC 6 2015 WEAK LOW PRESSURE WILL MOVE THROUGH THE REGION TONIGHT INTO MONDAY.
/ISSUED 251 PM CST SUN DEC 6 2015/ DESPITE PERIODIC WEAK COLD FRONT PASSAGES THIS WEEK.
HIGH PRESSURE WILL WEAKEN OVER THE CAROLINAS TONIGHT.
937 PM CST SUN DEC 6 2015 A WEAK FRONTAL BOUNDARY WAS DRAPED ALONG THE UPPER TEXAS COAST THIS EVENING WITH OBSERVED DEW POINTS OVER NORTH AND CENTRAL TEXAS AS OF 9 PM CST IN THE LOW TO MID 40S. /ISSUED 622 PM CST SUN DEC 6 2015/ CLEAR SKIES EXPECTED OVERNIGHT IN THE WAKE OF A WEAK COLD FRONT.
AN UPPER LEVEL TROUGH WILL MOVE ACROSS THE AREA THROUGH THE TAF PERIOD.
SHORT TERM: (Tonight and Monday) Potent short wave trof moving through the Mid MS Valley has more bark than bite and has only managed some small bands of light rain as the forcing moved into the CWA. This trof and the associated forcing will exit east into the OH Valley by mid evening, thus will be mentioning a low chance of rain early this evening to the east of the MS River. This low stratus will then slowly advect into eastern MO later tonight. There are strong indications with many of the shorter range models, especially the HRRR and SREF, that dense fog will develop in its wake in an arcing N/S band from western MO into central MO where sfc winds will become light in association weak surface ridging.
A VERY WEAK COLD FRONT/SURFACE BOUNDARY EXTENDS FROM TEXARKANA. BRO RADAR CURRENTLY SHOWS A FEW LIGHT SHOWERS MOVING SOUTHWEST ACROSS THE SOUTHERN PORTIONS OF THE LOWER TEXAS GULF WATERS. THIS ACTIVITY IS EXPECTED TO DIMINISH BY LATE THIS AFTERNOON WITH MINIMAL RAIN CHANCES THROUGH THE NEXT 36 HOURS AS HIGH PRESSURE SETTLES ACROSS THE AREA. OVERNIGHT LOW TEMPERATURES TONIGHT AND MONDAY NIGHT WILL BE GENERALLY IN THE LOW TO MID 50S UNDER PARTLY CLOUDY SKIES. HIGH TEMPERATURES MONDAY WILL BE IN THE LOW TO MID 70S WITH A MIX OF CLOUDS AND SUN.
THE LOW CLOUD/FOG SATELLITE VIEW INDICATED LOW CLOUDS (AT THE MOMENT ABOVE MVFR THRESHOLD ~3KFT AGL) FORMING ACROSS THIS REGION. THE HIGHER MOISTURE VALUES. MAINLY DOWN IN THE NORMALLY COOLER AREAS. STAYED WITH A COOLER WEST/WARMER EAST GRADIENT WE HAVE GOING NOW. 850MB AND SFC RIDGING WILL SPAN THE SOUTHEASTERN U.
TEMPERATURES ARE IN THE LOWER 70S. IN THE LOW LEVELS OF THE ATMOSPHERE. A TROUGH OF LOW PRESSURE WILL PROGRESS EASTWARD ACROSS THE NORTHEAST GULF OF MEXICO TONIGHT. A RIDGE OF HIGH PRESSURE WILL BE LOCATED OVER THE BAHAMAS OVERNIGHT.
MID LEVEL CLOUDS HAVE BLANKETED MUCH OF CENTRAL ALABAMA TODAY IN AN AREA OF MOISTURE AND LIFT AHEAD OF A COLD FRONT. THE CLOUDS WILL LIKELY REMAIN IN THE AREA UNTIL A WEAK COLD FRONT PASSES THROUGH THE AREA AROUND SUNRISE MONDAY.
958 PM EST SUN DEC 6 2015 HIGH PRESSURE WILL REMAIN CENTERED SOUTH OF NEW ENGLAND THROUGH EARLY MONDAY. A WEAK COLD FRONT WILL SAG SOUTH FROM CANADA AND OFFSHORE BY MONDAY AFTERNOON. HIGH PRESSURE BUILDS IN FROM THE WEST BEHIND THE FRONT. LOW PRESSURE DEVELOPS OF THE VIRGINIA COAST MONDAY NIGHT AND STAYS SOUTH OF NORTHERN NEW ENGLAND.
931 PM EST SUN DEC 6 2015 HIGH PRESSURE WILL MAINTAIN DRY WEATHER TONIGHT. A LOW PRESSURE SYSTEM MAY BRING LIGHT RAIN TO AREAS SOUTH OF PITTSBURGH ON MONDAY.
622 PM CST SUN DEC 6 2015 CLEAR SKIES EXPECTED OVERNIGHT IN THE WAKE OF A WEAK COLD FRONT.
VFR CONDITIONS WILL CONTINUE TO DOMINATE AT MOST AREA TERMINALS AS A REINFORCING COLD FRONT ADVANCES THROUGH THE REGION. /ISSUED 322 PM CST SUN DEC 6 2015/ WEAK COLD FRONT IS NOW ENTERING SE OK. FAIRLY ZONAL FLOW IN WAKE OF THIS FRONT WITH WARMING TREND UNDERWAY BY MID WEEK WITH DEEPENING SW FLOW AS DEEP UPPER LOW MOVES INTO BIG BEND AREA BY SUNDAY AFTN.
TEMPS SHOULD BE SIMILAR TO TODAY AND MAY EVEN BE A BIT WARMER WITH MORE WESTERLY WINDS NEAR THE SFC. FREEZING RAIN EARLY TRANSITIONING TO RAIN FAIRLY QUICKLY. TEMPS SHOULD BE INTO THE 40S PERHAPS EVEN WARMER FOR AREAS THAT HAVE NO SNOW.
MN TEMPS FOR MON NIGHT/TUE MORN ARE EXPECTED TO BE A DEGREE OR TWO WARMER DUE TO THE WINDS VEERING TO THE S-SE.
UPPER AIR ANALYSIS THIS MORNING SHOWED A TROUGH EXTENDING FROM THE NORTHERN PLAINS THROUGH TEXAS AND RIDGE ACROSS THE ROCKIES. A WEAK COLD FRONT STRETCHED FROM TYLER TO EAGLE PASS. TEMPERATURES MONDAY MORNING SHOULD BE A BIT COOLER THAN SUNDAY.
941 PM EST SUN DEC 6 2015 WEAK LOW PRESSURE WILL MOVE THROUGH THE REGION TONIGHT INTO MONDAY.
FREEZING LEVEL WAS AT 14K FEET AND THE -20C LEVEL WAS AT 21. A SERIES OF MID/UPPER LEVEL SHORT WAVES TROUGHS WILL BYPASS THE REGION WELL TO THE NORTH HAVING NO IMPACT ON THE LOCAL FORECAST AREA. A WEAKENING COLD FRONT ASSOCIATED WITH THE FIRST OF THESE SHORT WAVES WILL PUSH INTO THE AREA LATE TONIGHT AND MONDAY WITH LITTLE FANFARE BEFORE BECOMING DIFFUSE. HIGH PRESSURE WILL THEN BE REINFORCED ACROSS THE AREA EARLY IN THE WEEK AND TRANSLATE SLOWLY EASTWARD AS THE WEEK PROGRESSES.
714 PM EST SUN DEC 6 2015 HIGH PRESSURE REMAINS IN CONTROL OF THE SENSIBLE WEATHER TODAY WITH TEMPS SOARING INTO THE UPPER 50S TO LOWER 60S. DID OPT TO KEEP THE FAR EAST A BIT COOLER OVERALL IN THE MORE EXTREME VALLEY LOCATIONS. THESE CLOUDS ARE IN ADVANCE AND NEAR A DEEPENING CLOSED LOW ACROSS THE UPPER MIDWEST. THIS UPPER LOW IS EXPECTED TO MOVE EAST INTO THE OHIO VALLEY TONIGHT INTO EARLY MONDAY. GUIDANCE REMAINS IN GOOD AGREEMENT WITH THE UPPER LEVEL LOW MOVING INTO THE MID ATLANTIC BY MONDAY NIGHT. A COUPLE OF SHORT WAVE TROUGHS WILL BE MOVING THROUGH THE NORTHERN STREAM.
951 PM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL LINGER OVER THE UPPER OHIO VALLEY THROUGH TONIGHT. LOW PRESSURE WILL PASS ACROSS SOUTHERN OHIO MONDAY.
Temps are overachieving this afternoon in weak return flow on the back side of high pressure that has retreated into the Appalachians. Moisture is not deep but as the upper low closes off over Indiana, we should have enough dynamics to squeeze out a few hundredths in the 06-12Z time frame. Limited confidence will keep POPs in the chance category, with the highest POP north and east, and tapering down to slight chance along the KY/TN border.
THE HIGHER WINDS AND A MORE WIDESPREAD HIGH WIND EVENT OVER MOSTLY THE WIND PRONE AREAS WILL LIKELY OCCUR MON NIGHT THROUGH TUES MORNING. INCLUDED CENTRAL LARAMIE COUNTY (CHEYENNE) IN THE HIGH WIND WATCH AS SOUNDINGS INDICATE 60 KTS AT 2- 3 THOUSAND FEET AGL.
737 PM EST SUN DEC 6 2015 HIGH PRESSURE RIDGING INTO THE FORECAST AREA FROM THE NORTH WILL WEAKEN AS A TROUGH INTENSIFIES OFF THE COAST TONIGHT. THE LOW PRESSURE WILL MOVE NORTHEASTWARD AND FARTHER AWAY FROM THE FORECAST AREA MONDAY.
INVERTED TROUGH OFFSHORE HAS BACKED LOW LEVEL FLOW TO THE NORTH AND A SHALLOW PRODUCING A STRATUS CLOUD DECK. THE LOW LEVEL FLOW LOOKS STRONG ENOUGH TO INHIBIT SIGNIFICANT VISIBILITY RESTRICTIONS LATE TONIGHT. IN ADDITION TO THE LOW CLOUDS. A SURGE OF NORTH WINDS IS NOSING DOWN INTO THE VOLUSIA WATERS AND THIS SHOULD DECREASE (TEMPORARILY) LATER THIS EVENING AS HIGH PRESSURE TO THE NORTH WEAKENS.
1031 PM EST SUN DEC 6 2015 HIGH PRESSURE RIDGING INTO THE FORECAST AREA FROM THE NORTH WILL WEAKEN AS A TROUGH INTENSIFIES OFF THE COAST TONIGHT. THE LOW PRESSURE WILL MOVE NORTHEASTWARD AND FARTHER AWAY FROM THE FORECAST AREA MONDAY.
HIGH PRESSURE WILL BUILD INTO THE REGION THROUGH MONDAY.
814 PM EST SUN DEC 6 2015 HIGH PRESSURE RIDGING INTO THE FORECAST AREA FROM THE NORTH WILL WEAKEN AS A TROUGH INTENSIFIES OFF THE COAST TONIGHT. THE LOW PRESSURE WILL MOVE NORTHEASTWARD AND FARTHER AWAY FROM THE FORECAST AREA MONDAY.
Quiet and slightly cooler, but still near normal, temperatures are expected Monday in the wake of today's weak system. There is some potential that it will be cooler than our current forecast (mainly 40s), if low clouds and/or fog hold around longer than currently anticipated.
850MB AND SFC RIDGING WILL SPAN THE SOUTHEASTERN U.
A series of upper level disturbances and associated cold fronts will pass across the plains region over the next 10 days.
946 PM EST SUN DEC 6 2015 HIGH PRESSURE REMAINS IN CONTROL THROUGH MONDAY.
THEN HI-RES MODELS SHOW SPEEDS INCREASING ALONG THE HIGH TERRAIN BUT RETREATING FROM THE LOWER ELEVATIONS. WILL KEEP STRONG SPEEDS OVER THE LOWER ELEVATIONS THROUGH 12Z THOUGH AS THIS IS THE USUAL PATTERN FOR OUR WIND EVENTS.
CHATTANOOGA AIRPORT, TN 42 58 35 60 / 10 0 10 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 39 55 34 57 / 10 20 10 0 OAK RIDGE, TN 40 55 35 56 / 10 20 10 0 TRI CITIES AIRPORT, TN 35 51 32 55 / 10 40 10 0.
A rather weak upper level trough, currently over the Upper Mid West, well translate east-southeastward overnight. The associated weak cold front will approach our forecast area tonight, but will essentially dissipate by the time it reaches the northwest portions of our area late tonight. Lows will be near average, in the mid to upper 40s from Tallahassee and Valdosta north and westward, to the lower to mid 50s south and east of Tallahassee.
626 PM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL LINGER OVER THE UPPER OHIO VALLEY THROUGH TONIGHT. LOW PRESSURE WILL PASS ACROSS SOUTHERN OHIO MONDAY.
Temperatures will remain well above normal with high temperatures running in the lower to mid 60s each afternoon. Still expect a stronger upper level long wave trough to dig SE into the the desert southwest by late week into the early part of the weekend.
/ISSUED 156 PM EST SUN DEC 6 2015/ WEAKENING RIDGE OF HIGH PRESSURE CENTERED OVER THE MID ATLANTIC COAST AS LONGWAVE TROUGH CONTINUES TO DEEPEN OVER THE PLAINS. BEST CHANCES FOR RAIN ARE STILL VERY LIMITED DUE TO THE INFLUENCE OF THE COOL AND STABLE NOSE OF HIGH PRESSURE AND THE DEEP DRY LAYER OVER THE REGION. THE GOOD NEWS IS THAT AS I WRITE THIS THE INCOMING ECMWF LOOKS LIKE IT IS DEFINITELY TRENDING TOWARD THE SLOWER GFS WITH A CLOSED LOW DEVELOPING OVER THE SOUTHERN PLAINS.
651 PM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL LINGER OVER THE UPPER OHIO VALLEY THROUGH TONIGHT. LOW PRESSURE WILL PASS ACROSS SOUTHERN OHIO MONDAY.
716 PM EST SUN DEC 6 2015 HIGH PRESSURE WILL REMAIN CENTERED SOUTH OF NEW ENGLAND THROUGH EARLY MONDAY. A WEAK COLD FRONT WILL SAG SOUTH FROM CANADA AND OFFSHORE BY MONDAY AFTERNOON. HIGH PRESSURE BUILDS IN FROM THE WEST BEHIND THE FRONT. LOW PRESSURE DEVELOPS OF THE VIRGINIA COAST MONDAY NIGHT AND STAYS SOUTH OF NORTHERN NEW ENGLAND.
614 PM EST SUN DEC 6 2015 HIGH PRESSURE WILL MAINTAIN DRY WEATHER TONIGHT. A LOW PRESSURE SYSTEM MAY BRING LIGHT RAIN TO AREAS SOUTH OF PITTSBURGH ON MONDAY.
853 PM EST SUN DEC 6 2015 A WEAK WAVE HAS DEVELOPED IN A COASTAL TROUGH EAST OF SE GA THIS EVENING.
524 PM CST SUN DEC 6 2015 RIDGE OF HIGH PRESSURE OVERHEAD TODAY WITH VERY WARM TEMPS ALOFT. WEAK RIDGING TRANSITIONS TO MORE ZONAL FLOW.
858 PM EDT THU APR 23 2015 HIGH PRESSURE WILL BUILD IN FRIDAY BEFORE LOW PRESSURE TRACKING ACROSS THE OHIO VALLEY BRINGS SHOWER CHANCES FOR THE WEEKEND. CLOUD COVER ACROSS THE AREA SHOULD BEGIN TO DIMINISH TONIGHT FROM WEST TO EAST AS UPPER TROUGHING EXITS. AND SUBSIDENCE INCREASES WITH BUILDING HIGH PRESSURE. MAINLY SUNNY SKIES ARE EXPECTED FRIDAY UNDER THE HIGH WITH CU RULE INDICATING ONLY A FEW DIURNAL CU. STRONG CLOSED LOW PRESSURE AT 500 MB WILL REMAIN RELATIVELY STATIONARY OVER THE NORTHEASTERN CONUS THROUGH THE WEEKEND. NWLY FLOW WILL DOMINATE THIS PERIOD AS THE REGION REMAINS BETWEEN THIS LOW AND A RIDGE TO THE WEST.
NICE SWATH OF PACIFIC-BASED HIGH LEVEL MOISTURE STREAMING OVER THE STATE TONIGHT AS THE LOWER LEVELS BEGIN TO SATURATE BACK UP THROUGH LATE EVENING. THE HIGHEST CHANCES FOR THUNDER WILL OCCUR OVER THE MORE INTERIOR HUBS NORTH OF KCXO.