Aikyam-Lab/Synoptic-Bench huggingface dataset:
645 PM CDT FRI SEP 18 2015 /00Z TAFS/ A cold front will drop south across the region, reaching KABI after 08z, and KSOA/KJCT around 18z. /ISSUED 344 PM CDT FRI SEP 18 2015/ (Tonight and Saturday) Computer models are more progressive in bringing the cold front through the Big Country tonight after midnight, and south along the I-10 corridor late Saturday afternoon and evening (where it washes out). The best chance of rain for the Big Country, however, will occur after midnight and towards morning, as the cold front moves through, For Saturday, the more progressive nature of the front shifts the best chance of showers and thunderstorms southward into the Concho Valley and Heartland.
OTHERWISE THE HIGH CLOUDS HAVE CLEARED OUT OF THE SOUTHEAST AND SKIES CLEAR IN MOST OF NW/WCNTRL MN.
COLD FRONT MOVING QUICKLY ACROSS THE REGION THIS EVENING, WILL MOVE THROUGH CENTRAL AND SOUTHWEST OKLAHOMA TERMINALS BY 03Z. /ISSUED 237 PM CDT FRI SEP 18 2015/ SCATTERED SHOWERS AND STORMS THAT HAVE BEEN PERSISTENT THROUGH THE DAY ARE EXPECTED TO EXPAND IN COVERAGE AS THE COLD FRONT THAT IS CURRENTLY ACROSS NORTHWEST OKLAHOMA CONTINUES TO MOVE SOUTH THROUGH THE AREA.
THE MID-SOUTH IS LOCATED BETWEEN A SUBTROPICAL LOW TO THE SOUTHEAST AND AN APPROACHING COLD FRONT TO THE NORTHWEST. COOLER TEMPERATURES AND LOWER HUMIDITY IS EXPECTED. MID AND HIGH LEVEL CLOUDINESS WILL CONTINUE TO OVERSPREAD THE REGION TONIGHT IN ADVANCE OF AN APPROACHING COLD FRONT. THE COLD FRONT WILL ADVANCE ACROSS THE TAF SITES ON SATURDAY WITH ISOLATED SHOWERS AND THUNDERSTORMS.
SFC COLD FRONT IS WELL SOUTH OF THE TAF SITES WITH GUSTY NORTH TO NORTHEAST WINDS IN ITS WAKE. /ISSUED 325 PM CDT FRI SEP 18 2015/ COLD FRONT IS LYING ACROSS SOUTHEAST TEXAS PANHANDLE AT THIS TIME.
728 PM EDT FRI SEP 18 2015 RAIN CHANCES WILL INCREASE WITH A SATURDAY COLD FRONT. A LEADING SHORT WAVE TROUGH WILL CONTINUE TO PUSH EASTWARD TO OUR NORTH THIS EVENING. FRIES SHOWER/STORM CHANCES WILL INCREASE SATURDAY AFTERNOON AHEAD OF AND WITH A COLD FRONT.
1145 PM CDT FRI SEP 18 2015 MUCH COOLER WEATHER IS HERE TODAY. SUBJECTIVE 12Z UPPER AIR ANALYSIS INDICATES BROAD UPPER-LEVEL TROUGH ACROSS THE ROCKIES. AND SHARP COLD FRONT DRAPED BETWEEN THE TWO. WITH HIGH PRESSURE MOVING INTO THE AREA TONIGHT THROUGH SATURDAY. WITH COOLER TEMPERATURES LINGERING IN WAKE OF THE UPPER-LEVEL TROUGH.
CLEARING LINE ON THE BACKSIDE OF THE HIGH CLOUDS HALLOCK TO GRAND FORKS TO VALLEY CITY MOVING EAST. OVERALL LOOK FOR A MAINLY CLEAR SKY OVERNIGHT AS THE HIGH CLOUDS LEAVE THE EAST.
1131 PM CDT FRI SEP 18 2015 LAST OF THE FLASH FLOOD WATCH HAS BEEN CANCELLED WITH COLD FRONTAL PASSAGE BRINGING AN END TO HEAVY RAIN THREAT. LOW PRESSURE IS ORGANIZING IN NORTHEAST KS. THE COLD FRONT WILL END THE RAIN LATER TONIGHT.
603 PM CDT FRI SEP 18 2015 HIGH PRESSURE BUILDING ACROSS THE CENTRAL PLAINS WILL PROVIDE FOR STRONG RADIATIONAL COOLING OVERNIGHT.
00Z WATER VAPOR AND H4 RAP ANALYSIS SHOWS WEAK MID/UPPER LEVEL TROUGHING CONTINUES OVER THE FL PENINSULA AND EASTERN GULF OF MEXICO. AN ELONGATED AREA OF LOW WEAK LOW PRESSURE/TROUGHING EXTENDS FROM THE SOUTHEAST GULF OVER THE STATE OF FLORIDA TO NEAR THE COASTS OF GA/CAROLINAS. GUIDANCE IS IN GOOD AGREEMENT THE THIS LOW WILL CONSOLIDATE LATE TONIGHT/SATURDAY AND THEN PULL NORTHEASTWARD AWAY FROM THE FORECAST AREA. LOW PRESSURE WILL PULL SLOWLY AWAY FROM THE FLORIDA PENINSULA ALONG THE CAROLINA COAST LATER TONIGHT AND SATURDAY.
THE SKY WILL CLEAR AFTER SUNSET BUT CLOUDS WILL INCREASE OVERNIGHT WITH AN APPROACHING COLD FRONT. THE COLD FRONT WILL CONTINUE TO SURGE DOWN THE HIGH PLAINS TONIGHT AND CHANGE ITS ORIENTATION A BIT WHICH SHOULD SLOW ITS SOUTHWARD PROGRESSION ACROSS THE SOUTHERN PLAINS.
1018 PM CDT FRI SEP 18 2015 A COLD FRONT CONTINUES TO PROGRESS TOWARDS THE REGION THIS EVENING AND WILL MOVE INTO OUR NORTHWESTERN COUNTIES AROUND DAYBREAK TOMORROW. THE SKY WILL CLEAR AFTER SUNSET BUT CLOUDS WILL INCREASE OVERNIGHT WITH AN APPROACHING COLD FRONT. THE COLD FRONT WILL CONTINUE TO SURGE DOWN THE HIGH PLAINS TONIGHT AND CHANGE ITS ORIENTATION A BIT WHICH SHOULD SLOW ITS SOUTHWARD PROGRESSION ACROSS THE SOUTHERN PLAINS.
731 PM EDT FRI SEP 18 2015 HIGH PRESSURE WILL BE DISPLACED AS A COLD FRONT PUSHES ACROSS THE COMMONWEALTH SATURDAY EVENING.
1215 AM EDT SAT SEP 19 2015 A WARM RIDGE OF HIGH PRESSURE WILL REMAIN ACROSS THE REGION THROUGH SATURDAY.
THIS ACTIVITY IS THE RESULT OF MOISTURE WRAPPING AROUND THE N-W SIDE OF THE LOW OFFSHORE NE FL. 500MB TROUGH OFF THE SOUTHEAST U. ESPECIALLY WITH ADDITIONAL SUPPORT FOR LIFT FROM TRAILING FRONTAL BOUNDARY CROSSING THE REGION AND PROXIMITY OF MID LEVEL TROUGH. LOW PRESSURE OFF THE SOUTHEAST U. WINDS WILL BE TRICKY WITH A TRAILING FRONTAL TROUGH ACROSS ECFL FROM THE LOW. THE RIVER IS FORECAST TO REACH THE LOWER THRESHOLD OF ACTION STAGE (6.
623 PM CDT FRI SEP 18 2015 MUCH COOLER WEATHER IS HERE TODAY. SUBJECTIVE 12Z UPPER AIR ANALYSIS INDICATES BROAD UPPER-LEVEL TROUGH ACROSS THE ROCKIES. AND SHARP COLD FRONT DRAPED BETWEEN THE TWO. WITH HIGH PRESSURE MOVING INTO THE AREA TONIGHT THROUGH SATURDAY. WITH COOLER TEMPERATURES LINGERING IN WAKE OF THE UPPER-LEVEL TROUGH.
Cold front has pushed just south of Interstate 44 late this evening. mainly in the TUL/RVS/MLC area where the highest instability remains. /ISSUED 957 PM CDT FRI SEP 18 2015/ cold front currently rough approximation with I-44 for our forecast area. /ISSUED 358 PM CDT FRI SEP 18 2015/ The much anticipated cold front extends from eastern Kansas into western Oklahoma at this time and will sweep southeast across the area tonight. The first signs of surface based development along the cold front are being seen at this time in western Oklahoma.
The 7 pm EDT regional surface analysis showed a broad area of low pressure from the southeast Gulf of Mexico to off the GA coast, with the center off the east coast of GA being the most prominent. Vapor imagery and upper air data showed a trough along the Southeast coast, cut off from the mid latitude westerlies well to the north. Our forecast area area was under the dry, sinking side of this trough.
WINDS RELAXING AND SHOULD CALM AT MOST SITES WITH A WEAK BUBBLE OF HIGH PRESSURE OVER GALVESTON AREA AND LOWER PRESSURE NEAR JCT. /ISSUED / AREA WILL CONTINUE TO REMAIN UNDER THE INFLUENCE OF HIGH PRESSURE AT THE SURFACE AND ALOFT THROUGH THE WEEKEND. VERY LITTLE CHANGE IN THE DAY TO DAY FORECAST OVER THE NEXT 5 DAYS OR SO WITH HIGHS TOPPING IN NEAR 90F ALONG THE COAST AND IN THE LOWER TO MID 90S INLAND WITH LITTLE OR NO RAIN CHANCES.
1153 PM CDT FRI SEP 18 2015 NOT MUCH CHANGE FROM THE 00Z FORECAST WITH GENERALLY VFR CONDITIONS THROUGH SATURDAY AND INCREASING CLOUD COVER ASSOCIATED WITH AN APPROACHING COLD FRONT. THE COLD FRONT CONTINUES TO MAKE STEADY PROGRESS SOUTHWARD LATE THIS EVENING AND SHOULD APPROACH THE METROPLEX TAF SITES JUST AFTER DAYBREAK WHICH IS A FEW HOURS EARLIER THAN PREVIOUSLY THOUGHT. EXPECT SOUTHERLY WINDS BETWEEN 8 AND 12 KNOTS AHEAD OF THE COLD FRONT. 79 A COLD FRONT CONTINUES TO PROGRESS TOWARDS THE REGION THIS EVENING AND WILL MOVE INTO OUR NORTHWESTERN COUNTIES AROUND DAYBREAK TOMORROW. /ISSUED 247 PM CDT FRI SEP 18 2015/ SURFACE ANALYSIS SHOWS A COLD FRONT LOCATED ACROSS NORTHERN OKLAHOMA AND THE TEXAS PANHANDLE.
CYCLONIC GYRE IN THE LOWER AND MIDDLE TROPOSPHERE OVER THE FLORIDA PENINSULA AND ADJACENT COASTAL WATERS. AIR TEMPERATURES IN MOST KEYS ISLAND COMMUNITIES ARE STEADY IN THE LOWER/MID 80S.
1148 PM EDT FRI SEP 18 2015 HIGH PRESSURE WILL BE DISPLACED AS A COLD FRONT PUSHES ACROSS THE COMMONWEALTH SATURDAY EVENING.
BUT IT LIKELY WON'T BE TOO WIDESPREAD BECAUSE OF THE RIDGE AXIS MOVING OFF TO OUR EAST. OTHERWISE LOOK FOR WINDS TO PICK UP MID MORNING INTO THE AFTERNOON TO AROUND 10 KNOTS OUT OF THE NORTHWEST TOMORROW FOLLOWING THE PASSAGE OF A COLD FRONT.
A WARM FRONT WILL BE JUST NORTH OF THE FORECAST AREA THROUGH SATURDAY NIGHT.
1221 AM EDT SAT SEP 19 2015 HIGH PRESSURE WILL BRING SUNNY SKIES AND ABOVE NORMAL TEMPERATURES TO THE REGION SATURDAY. A COLD FRONT WILL CROSS THE AREA SATURDAY NIGHT AND SHOULD BRING SOME LIGHT SHOWERS.
834 PM EDT FRI SEP 18 2015 HIGH PRESSURE WILL BRING SUNNY SKIES AND ABOVE NORMAL TEMPERATURES TO THE REGION SATURDAY. A COLD FRONT WILL CROSS THE AREA SATURDAY NIGHT AND SHOULD BRING SOME LIGHT SHOWERS.
816 PM EDT FRI SEP 18 2015 RAIN CHANCES WILL INCREASE WITH A SATURDAY COLD FRONT. A LEADING SHORT WAVE TROUGH WILL CONTINUE TO PUSH EASTWARD TO OUR NORTH THIS EVENING. FRIES SHOWER/STORM CHANCES WILL INCREASE SATURDAY AFTERNOON AHEAD OF AND WITH A COLD FRONT.
/ISSUED 358 PM CDT FRI SEP 18 2015/ The much anticipated cold front extends from eastern Kansas into western Oklahoma at this time and will sweep southeast across the area tonight. The first signs of surface based development along the cold front are being seen at this time in western Oklahoma.
A FAIRLY DRY AIRMASS IS IN PLACE AS HIGH PRESSURE NOSES DOWN INTO THE CENTRAL GULF COAST. /ISSUED 342 PM CDT FRI SEP 18 2015/ LATEST SURFACE ANALYSIS SHOWED RIDGE AXIS FROM MID ATLANTIC STATES TO EAST TEXAS. UPPER LEVEL TROUGH WILL PUSH EAST ACROSS THE GREAT LAKES REGION SATURDAY.
ROADS ARE ALREADY SLICK IN THAT AREA FROM THE WET ROADS FREEZING EARLIER. COOLER AIR WILL CONTINUE TO SLIDE INTO THE FA FROM THE NORTH TONIGHT INTO FRI.
THE LOW-AMPLITUDE MID-LATITUDE WESTERLIES ACROSS THE CENTRAL PACIFIC THROUGH MUCH OF THE CONUS WILL BEGIN THE EVOLUTION TOWARDS A MORE AMPLIFIED PATTERN BEGINNING LATE TODAY. THE COLD CORE UPPER TROUGH CURRENTLY OFF THE PACIFIC NORTHWEST AND BRITCOL COASTS WILL BEGIN TO STRETCH SOUTHEAST AND EXPAND OVER THE WESTERN CONUS IN RESPONSE TO BUILDING OF THE UPPER RIDGE NEAR 155W.
A WEAK MID-LEVEL TROUGH EXTENDS INTO THE GULF OF MEXICO FROM A SYSTEM MOVING THROUGH THE GREAT LAKES TODAY AND THE OHIO RIVER VALLEY TONIGHT INTO TOMORROW. TEMPERATURES WILL BE SLIGHTLY COOLER OVERNIGHT.
251 PM EST THU DEC 10 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION THROUGH FRIDAY AND MOVE OFF THE COAST OVER THE WEEKEND.
321 PM EST THU DEC 10 2015 HIGH PRESSURE BUILDS OVER THE REGION TONIGHT. WITH A TROUGH NOW SLIDING FARTHER OFFSHORE AHEAD OF ~1018MB HIGH PRESSURE BUILDING NORTH ALONG THE ERN GULF COAST AND SE COAST THIS AFTN. THE INFLUENCE OF THE SE TROUGH AND ANY INCREASING CLOUDS SHOULD LIMIT FOG COVERAGE, ESPECIALLY INLAND.
1210 PM EST THU DEC 10 2015 A TROUGH OF LOW PRESSURE WILL AFFECT THE AREA THIS MORNING. HIGH PRESSURE FROM THE SOUTHEAST WILL RIDGE UP ACROSS THE AREA LATER TODAY AND REMAIN THROUGH THE WEEKEND.
HIGHEST WIND GUSTS REGISTERED AT 70 MPH IN THE HIGHER TERRAIN OF SOUTHWESTERN OREGON.
1143 AM EST THU DEC 10 2015 HIGH PRESSURE BUILDS OVER THE REGION THIS AFTERNOON AND TONIGHT. WITH A TROUGH NOW SLIDING FARTHER OFFSHORE AHEAD OF ~1018MB HIGH PRESSURE BUILDING NORTH ALONG THE SE COAST THIS AFTN. THE TROUGH WILL MOVE FARTHER OFFSHORE THIS AFTN. HIGH TEMPERATURES WILL BE AROUND +1 ST DEV ABOVE NORMAL, AVERAGING IN THE LOW/MID 60S. THE INFLUENCE OF THE TROUGH AND ANY CLOUDS SHOULD LIMIT FOG COVERAGE.
348 PM EST THU DEC 10 2015 HIGH PRESSURE SITTING TO OUR EAST. AND A LOW PRESSURE SYSTEM TO OUR NORTHWEST HAS CREATED A GOOD FLOW OF SOUTH/SW WARM MOIST AIR INTO THE REGION. WITH HIGH PRESSURE STILL IN PLACE. WPC IS NOW PEGGING PRECIP ACROSS THE WESTERN HALF OF OUR CWA STARTING OVERNIGHT AND CONTINUING INTO A GOOD PORTION OF THE DAY TOMORROW AS A COLD FRONT TO OUR NORTH SAGS SOUTH TOWARDS THE OHIO RIVER.
SOUTHERLY FLOW IN THE LOW-LEVELS STRENGTHENS FRIDAY NIGHT AND WE COULD SEE A FEW SHOWERS DEVELOP GIVEN THE INCREASE IN MOISTURE AND UPSLOPE WINDS.
337 PM EST THU DEC 10 2015 LOW PRESSURE TRACKING TO OUR WEST WILL PULL A WARM FRONT NORTH ACROSS THE AREA ON FRIDAY. MILD WEATHER IS EXPECTED FOR THE UPCOMING WEEKEND AS WEAK HIGH PRESSURE BUILDS IN.
SNOW EXPECTED TO SPREAD INTO ERN HIGHLANDS THIS AFTERNOON AS COLD FRONT APPROACHES.
A BAGGY HIGH PRESSURE AREA STRETCHES FROM THE CAROLINA COASTS INTO THE NORTHEASTERN GULF OF MEXICO. A SHORT WAVE TROUGH IS READILY APPARENT ON WATER VAPOR IMAGERY MOVING EASTWARD ACROSS THE SOUTHERN GULF OF MEXICO. THIS SHORT WAVE HAS BEEN RELEGATED TO PRODUCING HIGH CLOUDS AND HAS LOST ITS LINK WITH THE LOWER TROPOSPHERE. TEMPERATURES ARE IN THE MID 70S WITH DEWPOINTS IN THE LOWER 70S. OUR OLD FRIEND LOW-LEVEL STRATUS HAS RETURNED TO THE LOWER KEYS.
334 PM EST THU DEC 10 2015 HIGH PRESSURE BUILDS OVER THE REGION TONIGHT. WITH A TROUGH NOW SLIDING FARTHER OFFSHORE AHEAD OF ~1018MB HIGH PRESSURE BUILDING NORTH ALONG THE ERN GULF COAST AND SE COAST THIS AFTN. THE INFLUENCE OF THE SE TROUGH AND ANY INCREASING CLOUDS SHOULD LIMIT FOG COVERAGE, ESPECIALLY INLAND.
STRONG PACIFIC STORM SET OFF THUNDERSTORMS THIS MORNING IN SRN HARNEY COUNTY ALONG EWD-MOVING COLD FRONT. THE PARENT UPPER LOW WILL ALSO EVENTUALLY COME IN.
SW flow continues to increase across Kansas, in response to strong trough diving into the Great Basin. 12z NAM slides initial wind shift/cold front to a Hays-Ness City-Scott City line by about 3 PM, but areas south of this boundary will have no problem reaching upper 60s and lower 70s once again. Even warmer temperatures are forecast for Friday as moderate downslope winds return.
331 PM CST THU DEC 10 2015 (Tonight and Tomorrow) A pseudo-zonal flow aloft over the forecast area tonight will begin backing to the southwest tomorrow as an upper level trough deepens over the Desert Southwest. A forecast high of 85 degrees for San Angelo is a degree warmer than the record high of 84 degrees set back in 1929. Near record high afternoon temperatures, afternoon relative humidities in the lower 20s, and 20 foot winds of 10-15 mph, concomitant with drying vegetation, will yield elevated fire weather conditions for most of West Central Texas tomorrow.
Zonal flow aloft and high pressure at the surface will prevail across the Southeast through tonight. Elsewhere, expect lows in the low to mid 50s.
343 PM EST THU DEC 10 2015 WEAK HIGH PRESSURE WILL BUILD OVER THE REGION TODAY. FOLLOWED BY A WEAKENING TROUGH OF LOW PRESSURE THAT WILL SLIDE NORTH OF THE AREA FRIDAY. MILDER AIR IS EXPECTED TO MOVE IN FOR THE WEEKEND AS HIGH PRESSURE SETS UP OFF THE MID ATLANTIC COAST.
1244 PM EST THU DEC 10 2015 HIGH PRESSURE BUILDS OVER THE REGION THIS AFTERNOON AND TONIGHT. WITH A TROUGH NOW SLIDING FARTHER OFFSHORE AHEAD OF ~1018MB HIGH PRESSURE BUILDING NORTH ALONG THE SE COAST THIS AFTN. THE TROUGH WILL MOVE FARTHER OFFSHORE THIS AFTN. HIGH TEMPERATURES WILL BE AROUND +1 ST DEV ABOVE NORMAL, AVERAGING IN THE LOW/MID 60S. THE INFLUENCE OF THE TROUGH AND ANY CLOUDS SHOULD LIMIT FOG COVERAGE.
1026 AM CST THU DEC 10 2015 Much warmer start to the day than that of 24 hours ago per area raobs and surface temperatures comparisons.
WARMING TREND CONTINUES WITH WARMER TEMPERATURES TONIGHT. SOUTHWEST LOW LVL FLOW WILL GRADUALLY BECOME SOUTHERLY AS AN UPPER LVL TROUGH DIGS INTO THE DESERT SOUTHWEST/NORTHERN MEXICO.
ISSUED BY NATIONAL WEATHER SERVICE BURLINGTON VT 332 PM EST THU DEC 10 2015 A WEAK RIDGE OF HIGH PRESSURE BUILDING INTO THE REGION THIS AFTERNOON WILL PROVIDE GENERALLY DRY CONDITIONS TONIGHT, ALONG WITH SEASONALLY MILD TEMPERATURES. A TROUGH OF LOW PRESSURE TRACKING NORTH THROUGH THE GREAT LAKES WILL BRING SOME PASSING SHOWERS TO NORTHERN AREAS FRIDAY, BUT OVERALL CONDITIONS WILL REMAIN LARGELY DRY AND MILD.
400 PM EST THU DEC 10 2015 A WEAK COLD FRONT WILL MOVE INTO THE REGION OVERNIGHT. THE FRONT WILL MOVE NORTH AS A WARM FRONT FRIDAY INTO FRIDAY NIGHT. MID LEVEL RIDGING WILL THEN BUILD INTO THE OHIO VALLEY FOR THE WEEKEND. A WEAK COLD FRONT WILL MAKE IN ROADS INTO THE REGION. LOWS WILL RANGE FROM THE LOWER 40S NW TO THE LOWER 50S SOUTHEAST. WE SHOULD BE ABLE TO WARM INTO THE UPPER 50S NORTH TO THE LOWER 60S SOUTH.
THE TROF OF LOW PRESSURE RESPONSIBLE FOR THE CLOUDS AND ISOLATED SHOWERS THIS AFTERNOON WILL MOVE OUT OF THE AREA. BEHIND THE TROF. WAA WILL ALSO KICK IN OVERNIGHT AS A RIDGE QUICKLY BUILDS INTO THE REGION. THE LOW LEVEL WAA WILL KEEP THE OVERNIGHT INVERSION WEAK. LOW CLOUDS WRAPPING AROUND THE DEPARTING LOW WILL ENCROACH ON THE FORECAST AREA FROM THE NORTHWEST BEFORE MOVING OFF TO THE EAST BY MID DAY AS A WEAK RIDGE QUICKLY TRAVERSES SOUTHERN WISCONSIN. THE RIDGE WILL EXIT THE STATE IN THE EARLY AFTERNOON AS ANOTHER SUBTLE TROF MOVES INTO THE AREA IN THE AFTERNOON. THANKS TO WAA AND AND ANOTHER SLUG OF MOISTURE ASSOCIATED WITH THIS TROF.
EXPECT THE LOW CLOUDS TO HANG AROUND A GOOD PART OF THE DAY FOR PORTIONS OF WEST TENNESSEE ESPECIALLY NEAR THE TENNESSEE RIVER AND NORTHEAST MISSISSIPPI.
337 PM CST THU DEC 10 2015 SOMEWHAT COOLER BUT STILL WELL ABOVE TEMPERATURES TONIGHT WILL BE ACCOMPANIED BY INCREASING HIGH AND SOME MIDDLE CLOUDS ASSOCIATED WITH WARM ADVECTION ALOFT AS AN UPPER RIDGE MOVES ACROSS THE AREA. TEMPERATURES SHOULD DROP TO FREEZING OR A LITTLE COLDER LATE. FRIDAY WILL BE MARKED BY SOME COOLING FROM THE NORTH AS LOW PRESSURE APPROACHES FROM THE WEST. THIS LOW SHOULD PASS WEAKLY EAST BY THE END OF THE DAY AND WE SHOULD SEE THE BARE BEGINNINGS OF A FRONTAL BOUNDARY START TO SET UP SOUTHEAST OF THE AREA. TEMPERATURES WILL ALSO SHOW A NORTH/SOUTH GRADIENT WITH HIGHS AROUND 40 NORTH TO THE LOWER 50S SOUTHEAST.
THIS RIDGE WILL SLOWLY MOVE EAST WITH TIME ALLOWING MOISTURE LEVELS TO INCREASE WITH CONTINUED SOUTHERLY FLOW.
MARKING THE TRUE COLD FRONT. OUR WIND SHIFT TODAY IS LITTLE MORE THAN A COLD FRONT IN NAME. TONIGHTS WEATHER LOOKS QUIET AS UPPER RIDGING MOVES EASTWARD OVER THIS AREA.
WITH THE WARM FRONT HAVING SHIFTED N TO NEAR A SLR. AND DON/T FORSEE THESE CIGS SCATTERING MUCH FOR THE AFTERNOON AS THE LOW LEVEL MOISTURE DEEPENS BENEATH THE INVERSION IN THIS WARM ADVECTION REGIME. THE CURRENT FORECAST OF WARMER AND MORE HUMID CONDITIONS REMAIN ON TRACK.
MOST PCPN AND THE ASSOCIATED COLD FRONT HAVE EXITED EAST OF OUR AREA. SO WE WILL CONTINUE TO FORECAST SCATTERED RAIN AND SNOW SHOWERS THROUGH THE NIGHT AND FRIDAY WITH POPS A LITTLE HIGHER FRIDAY AS A SHORT WAVE TROUGH ENHANCES THE COLD CU.
The break in the pcpn across the majority of Ern Wa behind this mornings cold front is a bit deceiving since the water vapor loop and regional mosaic radar clearly show highly convective pcpn beginning to move across the Cascades. Sfc temps have been very slow to rise for these areas and are at or barely above freezing. Fcst plan view wet bulb sfc temps keep nearly all of the Cascades at or below freezing.
1202 PM EST THU DEC 10 2015 A WARM FRONT WILL CROSS THE AREA TODAY.
THE HIGHER CHANCES FOR THESE LOWER CONDITIONS WILL BE OVER EASTERN OKLAHOMA.
309 PM CST THU DEC 10 2015 Near record warmth ongoing across eastern Oklahoma and western Arkansas this afternoon even as a weak surface trof moves across the area.
1245 PM EST THU DEC 10 2015 HIGH PRESSURE WILL PREVAIL INTO THE WEEKEND.
AN UPPER LEVEL RIDGE WILL STRENGTHEN ALONG THE SOUTHEAST COAST FRIDAY INTO THE WEEKEND AS AN AMPLIFYING LONGWAVE TROUGH MOVES ASHORE THE PACIFIC COAST AND DIGS INTO THE DESERT SOUTHWEST. EXTENSIVE CIRRUS SHIELD THATS ACCOMPANYING A NORTHERN STREAM TROUGH HAS ADVANCED EAST INTO THE TN AND OHIO VALLEY. UPPER LEVEL RIDGE BUILDS DOWNSTREAM OVER THE SOUTHEAST COAST AS DIGGING LONGWAVE TROUGH MOVES ASHORE THE PACIFIC COAST LATE TONIGHT AND INTO THE DESERT SOUTHWEST ON FRIDAY.
324 PM EST THU DEC 10 2015 HIGH PRESSURE WILL PREVAIL INTO THE WEEKEND.
352 PM EST THU DEC 10 2015 HIGH PRESSURE SITTING TO OUR EAST. AND A LOW PRESSURE SYSTEM TO OUR NORTHWEST HAS CREATED A GOOD FLOW OF SOUTH/SW WARM MOIST AIR INTO THE REGION. WITH HIGH PRESSURE STILL IN PLACE. WPC IS NOW PEGGING PRECIP ACROSS THE WESTERN HALF OF OUR CWA STARTING OVERNIGHT AND CONTINUING INTO A GOOD PORTION OF THE DAY TOMORROW AS A COLD FRONT TO OUR NORTH SAGS SOUTH TOWARDS THE OHIO RIVER.
311 PM CST THU DEC 10 2015 WINDS HAVE WEAKENED SLIGHTLY IN THE TROUGH MOVING THROUGH THE REGION THIS AFTERNOON.
111 PM EST THU DEC 10 2015 WEAK HIGH PRESSURE WILL BUILD OVER THE REGION TODAY. FOLLOWED BY A WEAKENING TROUGH OF LOW PRESSURE THAT WILL SLIDE NORTH OF THE AREA FRIDAY. MILDER AIR IS EXPECTED TO MOVE IN FOR THE WEEKEND AS HIGH PRESSURE SETS UP OFF THE MID ATLANTIC COAST.
/ISSUED 1026 AM CST THU DEC 10 2015/ Much warmer start to the day than that of 24 hours ago per area raobs and surface temperatures comparisons.
THESE OCCUR AS A POWERFUL JET DIGS A TROF AND SPAWNS LEE SIDE CYCLOGENESIS. WITH AN ATTENDANT WARM FRONT DEVELOPING AND ARCING FROM THE PLAINS TOWARD THE MISSISSIPPI RIVER VALLEY. HEADING INTO THE WEEKEND, AS THE TROF CARVES SHARPLY, THE TELECONNECTED FLOW HAS BACKED AND IS DEEP SWLY, PROVIDING LONGITUDINAL COLUMNAR WARMING/MOISTENING.
BUT A MID TO LATE AFTERNOON RALLY SHOULD STILL DELIVER MILD HIGHS MOSTLY IN THE LOWER 60S.
352 PM EST THU DEC 10 2015 HIGH PRESSURE BUILDS IN FOR THE END OF THE WEEK AND WILL DOMINATE THIS WEEKEND. SHRTWV TROF IN ASSOCIATION WITH SUBTROPICAL JET WILL CROSS REGION OVERNIGHT. HIGH PRESSURE BUILDING OVERHEAD WILL BRING DRY CONDITIONS.
TEMPERATURES WILL BE SEVERAL DEGREES WARMER THIS WEEK AS COMPARED TO THIS PAST WEEKEND. TEMPERATURES TONIGHT WILL BE SEVERAL DEGREES WARMER THAN LAST NIGHT AND TUESDAY AFTERNOON HIGHS WILL BE 5 TO 10 DEGREES WARMER THAN MONDAY AS 850 MB TEMPERATURES WARM 3 TO 4 DEGREES OVER THE NEXT 24 HOURS.
946 PM EST MON NOV 30 2015 AN UPPER LOW OVER THE PLAINS STATES WILL SLIDE ACROSS THE GREAT LAKES THROUGH MIDWEEK.
640 PM EST MON NOV 30 2015 HIGH PRESSURE WILL REMAIN OVER THE AREA TONIGHT THEN MOVE EAST OF THE REGION ON TUESDAY.
701 PM EST MON NOV 30 2015 HIGH PRESSURE OVER THE NEW ENGLAND COAST WILL CONTINUE TO DRIFT SLOWLY EAST. LOW PRESSURE WILL DEVELOP OVER THE CENTRAL PLAINS AND STRENGTHEN AS IT MOVES INTO THE WESTERN GREAT LAKES BY TUESDAY NIGHT.
Temperatures will not change by more than a few degrees the rest of the afternoon and should hold steady this evening before starting to rise after midnight, mainly along and east of a KSDF/KBWG line, as southwest winds bring in warmer air. Highs Tuesday may come in the morning hours, as a cold front coming through will steady or bring falling temperatures through the afternoon.
ANOTHER LOW PRESSURE AREA WAS OVER IOWA BENEATH A SLOW MOVING UPPER LEVEL LOW. A COLD FRONT MOVING INTO TH MS RIVER VALLEY WILL ENHANCE SHOWERS OVER THE REGION LATE TONIGHT INTO TUESDAY.
HIGH PRESSURE WILL GRADUALLY BUILD OVER THE REGION THROUGH MID WEEK.
THIS IS A SECONDARY COLD FRONT ASSOCIATED WITH SECOND AREA OF HIGH PRESSURE PUSHING OFF THE FRONT RANGE.
601 PM CST MON NOV 30 2015 FOR 00Z TAFS /ISSUED 343 PM CST MON NOV 30 2015/ LIGHT TO MODERATE RAIN SPREAD ACROSS THE ENTIRE AREA THIS MORNING AHEAD OF A WARM FRONT THAT WAS LIFTING THROUGH THE AREA. BROAD UPPER LEVEL TROUGH OVER THE CENTRAL CONUS IS FORECAST TO SHIFT EVER SO SLOWLY EAST INTO THE UPPER GREAT LAKES TONIGHT INTO TUESDAY AND SEND A SLOW MOVING COLD FRONT THROUGH THE AREA. THE LOW LEVEL JET MENTIONED ABOVE IS STILL FORECASTED TO BE OVER THE AREA AS THE FRONT MOVES THROUGH AND THE LIFT ASSOCIATED WITH THE FRONT WILL COMBINE WITH THE GOOD MOISTURE TRANSPORT FROM THE JET TO ALLOW FOR AN ADDITIONAL 1.
A WEAK SURFACE COASTAL TROUGH AXIS WAS FORMING OFFSHORE OF THE LOCAL ATLANTIC COAST WITH ZONAL FLOW ALOFT BRINGING A LOT OF PASSING HIGH CLOUDS EMBEDDED WITHIN THE SOUTHERN STREAM JET. EXPECT A MILD NIGHT TONIGHT UNDER PASSING HIGH CLOUDS FROM THE WEST AND LOW LEVEL CLOUDS FROM THE SSE WITH MINS RANGING IN THE MID/UPPER 50S INLAND TO THE LOWER 60S ALONG THE COAST. THERE REMAINS A LOT OF PASSING UPPER LEVEL CLOUDS AND ALSO A FEW BANDS OF STRATUS ROTATING NORTHWARD FROM THE SOUTH ASSOCIATED WITH A COASTAL TROUGH OFFSHORE OF CENTRAL FL. AND GNV BY 04-05Z WITH THE LOWEST PREVAILING CONDITIONS OF IFR AT VQQ BY 08Z FOR NOW.
525 PM CST MON NOV 30 2015 UPPER LEVEL LOW PRESSURE IS CENTERED ACROSS CENTRAL NEBRASKA THIS AFTERNOON. THE LOW SHOULD BE CENTERED ACROSS NORTHEAST NEBRASKA BY TUESDAY MORNING. LIGHT SNOW WILL CONTINUE THROUGH MUCH OF THE NIGHT ALONG AND NORTH OF INTERSTATE 80 ON THE BACK SIDE OF THE LOW. AS MOIST NORTH TO NORTHEAST FLOW /TROWAL/ FAVORS SNOW IN THE UPSLOPE AREA OF THE PINE RIDGE IN NORTHERN PORTIONS OF THE COUNTY. ON TUESDAY THE WEAKENING TROWAL SHIFTS EAST OVER BOYD AND HOLT COUNTY AS THE UPPER LOW MOVES EAST. AS THE CYCLONE MAKES ITS WAY TO THE UPPER MISSISSIPPI VALLEY.
550 PM EST MON NOV 30 2015 HIGH PRESSURE OVER THE NEW ENGLAND COAST WILL CONTINUE TO DRIFT SLOWLY EAST. LOW PRESSURE WILL DEVELOP OVER THE CENTRAL PLAINS AND STRENGTHEN AS IT MOVES INTO THE WESTERN GREAT LAKES BY TUESDAY NIGHT.