Aikyam-Lab/Synoptic-Bench huggingface dataset:
414 PM EDT MON APR 4 2016 HIGH PRESSURE WILL THEN BUILD INTO THE AREA TONIGHT INTO TUESDAY. THE HIGH WILL MOVE EAST OF THE REGION TUESDAY NIGHT.
HIGH LAKE EFFECT SNOW SHOWERS WILL WIND DOWN BY EARLY EVENING AS WIND FLOW BECOMES LESS FAVORABLE WHILE HIGH PRESSURE BUILDS IN. THE HIGH WILL ALSO RESULT IN DECREASING CLOUDS THIS EVENING INTO TONIGHT. WITH LOWS IN THE LOW TO MID 20S MOST PLACES. QUITE A BIT OF 850-700 MB WARM AIR ADVECTION WILL MOVE IN TOMORROW AHEAD OF APPROACHING LOW PRESSURE.
345 PM EDT MON APR 4 2016 HIGH PRESSURE WILL BUILD INTO THE REGION FROM THE NORTHERN PLAINS OVERNIGHT.
332 PM EDT MON APR 4 2016 COLD FRONT CROSSING THE REGION THIS AFTERNOON.
CHATTANOOGA AIRPORT, TN 49 24 34 19 / 20 10 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 41 20 28 15 / 50 10 10 0 OAK RIDGE, TN 42 20 30 14 / 60 10 0 0 TRI CITIES AIRPORT, TN 36 19 24 9 / 80 20 10 0 TN.
A COLD FRONT CURRENTLY RESIDES OVER MY SOUTHERN ZONES JUST NORTH OF THE HIGHWAY 84 CORRIDOR. BOTH THE LOW CLOUDS AND PATCHY FOG WILL DISSIPATE OVER THE SOUTHERN HALF OF THE FORECAST AREA. BOTH HIGH PRESSURE AND COLD ADVECTION WILL INCREASE ACROSS THE FORECAST AREA ON SATURDAY.
TEMPERATURES SHOULD GAIN SEVERAL MORE DEGREES TO TOP OUT IN THE LOWER 70S. THE LAST TIME KEY WEST OBSERVED A TEMPERATURE OF 85F OR WARMER WAS BACK ON NOVEMBER THE 20TH 2015.
FAIR AND SLIGHTLY COOLER WEATHER IS EXPECTED TODAY AND SATURDAY.
HIGH PRESSURE OVERHEAD KEEPS THE WIND GENERALLY LIGHT, ALLOWING FOR A SEA BREEZE TO DEVELOP TODAY AND A LAND BREEZE TO DEVELOP TONIGHT.
Northern California under southwest flow aloft this morning between a high pressure ridge over the Great Basin and a trough off the Pacific Northwest coast. Weak frontal band now off the north coast expected to lift northward and break apart as in moves inland into the ridge so no precipitation is expected over the CWA in the short term.
558 AM EST FRI FEB 12 2016 LOW PRESSURE NEAR THE SOUTH CAROLINA COAST THIS MORNING WILL SHIFT FARTHER NORTHEAST OF THE AREA THIS AFTERNOON. MUCH OF THE MOISTURE ASSOCIATED WITH THE LOW WILL BE NORTHEAST OF THE FORECAST AREA.
A COLD FRONT IS MOVING THROUGH THE COASTAL WATERS OVERNIGHT AND IS EXPECTED TO COME ASHORE EARLY THIS MORNING. HIGH PRESSURE WILL MOVE IN BEHIND THE FRONT WITH DRY WEATHER RETURNING FOR A BRIEF PERIOD.
A COLD FRONT DRAPED ACROSS THE DEEP SOUTH WILL SLIDE SOUTH INTO/THROUGH CENTRAL FLORIDA LATE TONIGHT. SW/WSW WINDS THIS EVENING WILL VEER TO WNW/NW BEHIND A COLD FRONT LATE IN THE NIGHT. HIGH PRESSURE WEAKENS TO THE SOUTH WITH A FRONTAL BOUNDARY DRAPED OVER THE GULF COAST STATES POISED TO MOVE INTO/ACROSS THE ECFL COASTAL WATERS OVERNIGHT. DRY AIR MASS WILL SLOWLY MODIFY TODAY AS THE RIDGE AXIS OVERHEAD BREAKS DOWN. STRONGER WINDS ON THE NRN FLANK OF THE RIDGE WILL RESULT IN A WIDE DISPERSION RANGE.
413 AM PST FRI FEB 12 2016 A cold front will pass through the region today with continued precipitation chances and slightly lower snow levels.
VFR REST OF DAY WITH HIGH PRESSURE IN CONTROL. A STRONG MID LEVEL RIDGE IS IN PLACE UPSTREAM OVER THE WESTERN UNITED STATES. WHILE BROAD HIGH PRESSURE STRADDLES THE CWA AND SURROUNDING AREAS. FRESH HIGH PRESSURE IS MOVING SOUTH OUT OF THE WEST AND CANADA OVER THE PLAINS. TODAY WILL BE WARMER THAN NORMAL BY SEVERAL DEGREES WITH MID LEVEL RIDGING AND HIGH PRESSURE IN PLACE. HIGH PRESSURE MOVING INTO NORTH TEXAS WILL EQUALIZE WITH LOCAL HIGH PRESSURE TO YIELD A VERY FLAT GRADIENT AND LIGHT WINDS. WINDS WILL BACK SLIGHTLY TO EAST SOUTHEAST BUT WILL REMAIN LIGHT TO MODERATE AS FRESH HIGH PRESSURE ASSERTS ITS ARRIVAL FROM THE NORTH.
COOLER CONDITIONS ARE FORECAST FOR FRIDAY AND SATURDAY.
A WEAK COLD FRONT WILL PASS THROUGH WESTERN WASHINGTON THIS MORNING. AN UPPER LEVEL TROUGH WILL PRODUCE SHOWERS THIS AFTERNOON THROUGH SATURDAY MORNING.
THE PASSIVE PASSAGE OF A WEAK COLD FRONT TONIGHT WILL HAVE EVENING BREEZES BECOMING VARIABLE. EARLY SATURDAY (OVERNIGHT) DRIER AND COLDER AIR UNDERCUTTING WARMER AND MORE MOIST MID LEVEL AIR MAY CREATE A LATE PERIOD MVFR DECK.
341 AM MST FRI FEB 12 2016 FORECAST DISTRICT SHOULD EXPERIENCE GENERALLY DRY CONDITIONS IN COMBINATION WITH COOLER TEMPERATURES IN WAKE OF COOL SURGE WHICH IS CURRENTLY OVER EAST-CENTRAL NEW MEXICO EARLY THIS MORNING. COOLER SOUTHEASTERLY TO EASTERLY FLOW IS EXPECTED TO DEVELOP OVER EASTERN SECTIONS TODAY AND TONIGHT ALLOWING MAXIMUM TEMPERATURES THIS AFTERNOON TO RUN SOME 5F TO 13F COOLER OVER EASTERN SECTIONS WHILE WESTERN PORTIONS OF THE FORECAST DISTRICT SHOULD EXPERIENCE TEMPERATURES WITHIN A CATEGORY OR SO OF READINGS NOTED PREVIOUS 24 HOURS. WITH A RIDGE SITTING OFF THE WEST COAST. ON TUE THE UPR RIDGE WL MOVE OVER THE WRN U. THU AND UPR TROF IS FORECAST TO MOVE OVR CA.
636 AM CST FRI FEB 12 2016 LOWERED HIGH TEMPERATURES A FEW DEGREES FROM THE PREVIOUS FORECAST WITH LITTLE TO NO TEMPERATURE RECOVERY EXPECTED TODAY AS ARCTIC HIGH PRESSURE BUILDS ACROSS NORTH DAKOTA. POSSIBLY MIXED WITH OR CHANGING TO FREEZING RAIN FOR A BRIEF TIME IN THE SOUTHWEST. ARCTIC HIGH PRESSURE WAS CENTERED OVER NORTHERN SASKATCHEWAN. AS THE HIGH MOVES SOUTHEAST. FORECAST BUFKIT SOUNDINGS INDICATE A TEMPERATURE PROFILE THAT FAVORS LIGHT SNOW MIXING WITH OR CHANGING OVER TO FREEZING RAIN IN THE FAR SOUTHWEST - JUST AS THE ISENTROPIC LIFT BEGINS TO WEAKEN LATE TONIGHT.
520 AM CST FRI FEB 12 2016 A large area of high pressure extending from here into the Canadian High Plains will be responsible for a return to cold air over the weekend, and this could bring the coldest air this area has seen since mid-January.
A COLD FRONT THAT EXTENDED SOUTHEAST OF A KPRX /PARIS/ TO KACT /WACO/ TO KGRK /KILLEEN/ LINE AS OF 11Z.
SHORT TERM SURFACE RIDGING OVER THE GULF IS WEAKENING AND WILL GIVE WAY IN RESPONSE TO A STRONG LARGE ARCTIC HIGH PRESSURE RIDGE CENTER THAT WILL SINK SOUTH-SOUTHEAST OUT OF SASKATCHEWAN AND MANITOBA CANADA INTO MINNESOTA THROUGH TONIGHT. THE UPPER PATTEN SHOWS THE MAIN UPPER LOW WELL TO THE NORTH OVER NORTHERN ONTARIO MOVING TOWARD QUEBEC.
647 AM EST FRI FEB 12 2016 AN ARCTIC COLD FRONT WILL MOVE THROUGH THE AREA LATE THIS AFTERNOON AND THIS EVENING. HIGH PRESSURE WILL EVENTUALLY BUILD ACROSS THE AREA SATURDAY NIGHT.
EARLY MORNING ANALYSIS PLACES AN ARCTIC COLD FRONT DROPPING INTO FAR NORTHERN MINNESOTA. BEFORE APPROACHING STRONG LOW LEVEL RIDGING (1040+ MB SURFACE PRESSURES) QUICKLY SHUT DOWN THE WIND AFTER MIDNIGHT. NOT LOOKING LIKE A WHOLE LOT OF RECOVERY INTO SATURDAY WITH THE RIDGE AXIS OVERHEAD AND LIMITED MIXING.
/ISSUED 353 AM CST FRI FEB 12 2016/ DRY AND COLD CONDITIONS WILL CONTINUE TODAY AND TOMORROW AS AN AREA OF HIGH PRESSURE SHIFTS FROM THE NORTHERN PLAINS SOUTH OVER IOWA AND THEN INTO THE SOUTHERN GREAT LAKES AREA. WITH SLIGHT RIDGING BUILDING IN FROM THE WEST TODAY AND TOMORROW. MORNING LOWS ARE EXPECTED TO NE NEAR TO SLIGHTLY BELOW FREEZING ACROSS MOST OF THE AREA.
SOUTHWEST FLOW ALOFT WILL RESIDE OVER SE OREGON AND SW IDAHO TODAY AS THE UPPER RIDGE SHIFTS TO THE EAST.
619 AM EST FRI FEB 12 2016 LOW PRESSURE NEAR THE SOUTH CAROLINA COAST THIS MORNING WILL SHIFT FARTHER NORTHEAST OF THE AREA THIS AFTERNOON. MUCH OF THE MOISTURE ASSOCIATED WITH THE LOW WILL BE NORTHEAST OF THE FORECAST AREA.
936 AM EST FRI FEB 12 2016 LOW PRESSURE NEAR THE SOUTH CAROLINA COAST THIS MORNING WILL SHIFT FARTHER NORTHEAST OF THE AREA THIS AFTERNOON. MUCH OF THE MOISTURE ASSOCIATED WITH THE LOW WILL BE NORTHEAST OF THE FORECAST AREA.
557 AM EST FRI FEB 12 2016 LOW PRESSURE NEAR THE SOUTH CAROLINA COAST THIS MORNING WILL SHIFT FARTHER NORTHEAST OF THE AREA THIS AFTERNOON. MUCH OF THE MOISTURE ASSOCIATED WITH THE LOW WILL BE NORTHEAST OF THE FORECAST AREA.
BUT A CHANGE IS ON THE WAY AS ANOTHER DRY COLD FRONT WILL PUSH THROUGH LATE TODAY. A COOLER START TO TOMORROW AS COLD AIR ADVECTS BACK INTO THE REGION OVERNIGHT. THIS LATEST FRONT WILL USHER IN A COOLER AND DRIER WEEKEND.
532 AM CST FRI FEB 12 2016 A cold front will move through the area this morning. Temperatures will still warm into the low to mid 40s across extreme southeastern Kansas and southern Missouri by midday. Highs across central Missouri will only warm into the lower 30s today as temperatures fall into the 20s this afternoon. Canadian high pressure will slide southeast across the region tonight and Saturday.
228 AM PST FRI FEB 12 2016 A cold front will pass through the region today with continued precipitation chances and slightly lower snow levels.
A NEARLY STATIONARY COLD FRONT OVER EAST TEXAS AND NORTHWEST AND NORTH CENTRAL LOUISIANA WILL SHIFT SOUTH DURING THE AFTERNOON WITH NORTHERLY WINDS OF 5-10 KNOTS IN ITS WAKE WITH LIGHT AND VARIABLE TO LIGHT SOUTH LESS THAN 7 KNOTS PRIOR TO ITS PASSAGE. /ISSUED 409 AM CST FRI FEB 12 2016/ A SURFACE COLD FRONT REMAINS STALLED JUST SOUTH OF INTERSTATE 20. THE FRONT SHOULD FINALLY MOVE SOUTH OF THE CWA BY THIS AFTERNOON AS A COOLER AIRMASS BEGINS TO MOVE INTO THE REGION.
DESPITE A WEAK COLD FRONT PASSAGE THIS AFTERNOON - NEAR TO ABOVE NORMAL TEMPERATURES WILL REMAIN IN PLACE. MORE CLOUDS AND COOLER CONDITIONS ARE EXPECTED SATURDAY WITH CONTINUED DRY CONDITIONS. SYNOPTIC H5 PATTERN OVER THE CONUS THIS MORNING PER WATER VAPOR AND RAP ANALYSIS REVEALS A LONGWAVE TROUGH OVER EASTERN CONUS ARCING NW BACK INTO THE NORTH CENTRAL PLAINS. DUE TO THIS AND THE COOLER H925 TEMPS.
HIGHS WILL WARM INTO THE LOW AND MID 70S IN MOST LOCATIONS. THE COLD FRONT WILL SURGE SOUTH INTO THE GULF FRIDAY NIGHT AS HIGH PRESSURE BUILDS SOUTHWARD ACROSS THE REGION.
OTHERWISE LOCALLY BREEZY SW WINDS WILL RESULT IN A NICE WARMUP TODAY WITH HIGHS MAINLY IN THE LOWER/MID 70S. THUS WILL RETAIN THE LOW END SCA.
WITH HIGH PRESSURE TO OUR SOUTH AND AN AREA OF LOW PRESSURE DEVELOPING JUST OFFSHORE THE CAROLINA COAST DURING THE AFTERNOON A SOUTHWEST WIND FLOW WILL INCREASE DURING THE DAY WHICH WILL ALLOW TEMPERATURES TO WARM BACK TOWARD SEASONAL NORMS WITH HIGHS CLIMBING INTO THE 70S AREA-WIDE DURING THE AFTERNOON. EXCEPT SLIGHTLY COOLER READINGS ALONG THE IMMEDIATE COAST DUE TO THE ONSHORE FLOW. SHIFTING TO THE NORTHWEST TO NORTH AFTER 09Z TONIGHT AS A COLD FRONT MOVES SOUTH THROUGH THE REGION. A COLD FRONT WILL MOVE SOUTH THROUGH THE WATERS LATER TONIGHT INTO EARLY SATURDAY WITH WINDS SHIFTING TO THE NORTHWEST AND NORTH WITH CAUTIONARY HEADLINES A POSSIBILITY ACROSS THE NORTHERN AND CENTRAL OFFSHORE WATERS THROUGH SATURDAY.
409 AM CST FRI FEB 12 2016 A SURFACE COLD FRONT REMAINS STALLED JUST SOUTH OF INTERSTATE 20. THE FRONT SHOULD FINALLY MOVE SOUTH OF THE CWA BY THIS AFTERNOON AS A COOLER AIRMASS BEGINS TO MOVE INTO THE REGION.
427 AM MST FRI FEB 12 2016 BACK DOOR COLD FRONT WILL SLOWLY MOVE EAST TO WEST THROUGH THE AREA TODAY. AS THE MOISTURE DEEPENS TONIGHT FREEZING FOG AND FREEZING DRIZZLE WILL BECOME MORE WIDESPREAD. MIGHT SEE SOME VERY LIGHT FREEZING RAIN WHERE MOISTURE BECOMES DEEPEST. TEMPERATURES WILL BE SLOW TO RECOVER ON SATURDAY AS CLOUDS PERSIST INTO THE AFTERNOON EXCEPT IN NORTHEAST COLORADO WHERE IT WILL BE WARMER. SURFACE WINDS WILL TURN NORTHWEST SATURDAY NIGHT AS THE FRONT RETREATS EASTWARD AS A WARM FRONT.
A warm front continues to cross north central Idaho and much of western Montana this morning, bringing light rain showers to valleys and areas of fog. Later tonight, a cold front will approach from the northwest and lower snow levels area-wide to below 4000 feet by Saturday morning.
A MID/UPR DRY SLOT EVIDENT IN MULTI-SPECTRAL SAT IMAGERY AND UPR AIR OBS IS CURRENTLY MOVING ACROSS THE LOWER MISS VALLEY AND WILL CONTINUE TO PROGRESS EWRD ACROSS OUR AREA FROM THE LATE MORNING THROUGH THE AFTERNOON. 3-HOUR POP GROUPS WERE CREATED AND POPS TAILORED TO INDICATE THE LOWER COVERAGE OF ACTIVITY FOR PARTS OF THE AFTERNOON. WIND SHEAR WILL DECREASE AFTER MIDNIGHT AS THE LOW-LVL JET WEAKENS AND PUSHES OFF TO THE NE IN CONCERT WITH THE SFC/UPR LOW. A TEMPORARY BREAK IN THE LOW CLOUD CANOPY IS EVIDENT ON SAT IMAGERY AND MAY LEAD TO TEMPO VFR CONDITIONS AT KMSL THRU 21Z.
312 PM EST WED DEC 23 2015 LOW PRESSURE WILL TRACK TO OUR WEST TONIGHT AND THURSDAY PULLING A WARM FRONT THROUGH THE REGION.
VERY WINDY CONDITIONS WILL DEVELOP BEHIND THE DEPARTING LOW AND COLD FRONT BY MID/LATE EVENING.
IN THE WAKE OF A WEAK COLD FRONT THIS MORNING. THE FOG WILL DISSIPATE AROUND 10 AM AS WESTERLY WINDS DEVELOP BEHIND A WEAK COLD FRONT. HIGHS TEMPERATURES ARE PROGGED TO REACH THE LOWER 80S AS FAR NORTH AS AUSTIN.
Passage of cold front/dry line has been accompanied by deep mixing over southwest and west central MO with sustained winds of 25-30kts, and expecting similar conditions to spread over western portions of our CWA as fropa occurs during the afternoon. Otherwise, no changes to earlier thinking, and still anticipating strong convection to fire along the cold front/dry line over the next 1-2 hours. Forecast area to remain on warm side of system through midday before strong cold front slides through region.
205 PM CST WED DEC 23 2015 Strong area of low pressure currently rapidly lifting northeast across northern MO with a trailing surface front. Winds should begin to subside by then as the low will rapidly lift off to the northeast. Everything should clear out to our east by 00-01z with the low rapidly lifting to the northeast into Canada tonight.
/ISSUED 533 AM CST WED DEC 23 2015/ A S/WV TROUGH WILL MOVE EAST OF THE REGION TODAY.
1108 AM EST WED DEC 23 2015 HIGH PRESSURE REMAINS IN CONTROL OF THE WEATHER PATTERN FOR SOUTH FLORIDA TODAY.
ANOTHER WEAK COLD FRONT WILL SHIFT WINDS NORTHWESTERLY AGAIN DURING THE EARLY MORNING HOURS ON THURSDAY. ANOTHER SHORT WAVE TROUGH MAY PRODUCE A FEW LIGHT RAIN SHOWERS ACROSS THE WESTERN PANHANDLES THURSDAY AFTERNOON.
WITH ANOMALOUS SUBTROPICAL RIDGE PERSISTING TO THE SOUTHEAST AND GENERAL TROUGHING TO THE WEST.
UPDATE: Current line of convection over the southeast sections of the CWA will continue to roll east and exit the area early this afternoon, just in time for another round of strong to potentially severe storms to develop along the eastward pushing cold front/dry line. Forecast area to remain on warm side of system through midday before strong cold front slides through region.
143 PM EST WED DEC 23 2015 HIGH PRESSURE TO THE EAST WILL KEEP THE WIND OUT OF THE SOUTHEAST THROUGH THE TAF PERIOD. /ISSUED 1108 AM EST WED DEC 23 2015/ HIGH PRESSURE REMAINS IN CONTROL OF THE WEATHER PATTERN FOR SOUTH FLORIDA TODAY.
WEBCAMS IN THE HIGH COUNTRY SHOW THE DIVIDE MOUNTAINS STILL HAVE THE SNOW TURNED ON. A STRONG JET IS PROJECTED TO DIVE DOWN THE WEST COAST AS A TROUGH STRENGTHENS AND COMES ON SHORE OVER OREGON. THE BASE OF THE PACIFIC TROUGH MENTIONED PREVIOUSLY IN THE SHORT TERM SECTION ROTATES TO SOUTHWEST UTAH BY 12Z CHRISTMAS MORNING. SNOWFALL WILL CONTINUE ACROSS MUCH OF THE REGION THROUGHOUT XMAS DAY AND INTO THE EVENING AS THE LOW PRESSURE TROUGH STALLS AND DEEPENS.
WEAK SURFACE RIDGING EXTENDING SOUTHEAST FROM NRN OKLA WILL MAINTAIN AN EASTERLY COMPONENT TO THE WINDS THROUGH THE DAY. THE COOLER AIRMASS AND UPSLOPE WINDS WILL PRODUCE A SLIGHT COOL-DOWN WITH THURSDAY/S HIGHS EXPECTED TO RANGE FROM MID 50S NORTH TO MID 60S SOUTH.
A MID/UPR DRY SLOT EVIDENT IN MULTI-SPECTRAL SAT IMAGERY AND UPR AIR OBS IS CURRENTLY MOVING ACROSS THE LOWER MISS VALLEY AND WILL CONTINUE TO PROGRESS EWRD ACROSS OUR AREA FROM THE LATE MORNING THROUGH THE AFTERNOON. 3-HOUR POP GROUPS WERE CREATED AND POPS TAILORED TO INDICATE THE LOWER COVERAGE OF ACTIVITY FOR PARTS OF THE AFTERNOON. WIND SHEAR WILL DECREASE AFTER MIDNIGHT AS THE LOW-LVL JET WEAKENS AND PUSHES OFF TO THE NE IN CONCERT WITH THE SFC/UPR LOW.
FEW STRONG THUNDERSTORMS POSSIBLE THIS AFTERNOON FOR INLAND LATE MORNING SURFACE ANALYSIS DEPICTS ATLANTIC SURFACE RIDGING REMAINING IN PLACE. AN INTENSE LOW PRESSURE CENTER (985 MILLIBARS) WAS MOVING NORTHEASTWARD THROUGH EASTERN KANSAS. DEEP-LAYERED RIDGING WAS CENTERED EAST OF THE BAHAMAS WHILE TROUGHING COVERED THE WESTERN HALF OF THE NATION.
1141 AM CST WED DEC 23 2015 AT H5 BROAD TROUGH FROM CENTRAL CANADA INTO CENTRAL PLAINS. UPPER HIGHS ARE OFF EITHER COAST.
252 PM CST WED DEC 23 2015 A broad upper level trough is over the western 2/3rds of the conus with the base of the trough over the CWA. This has resulted in westerly upper flow with the strong winds from the base of the trough mixing downward to the surface. Temperatures this afternoon are expected to be a few degrees cooler than yesterday but still about 10 degrees above normal behind a Pacific front. The upper trough is expected to deepen and strengthen over the western coast on Thursday allowing for the upper flow over West Texas and southeast New Mexico to become southwesterly. The upper trough over the western coast will continue to deepen and is expected to begin to move over the Rocky Mountains on Christmas Day.
250 PM EST WED DEC 23 2015 LOW PRESSURE WILL TRACK TO OUR WEST TONIGHT AND THURSDAY PULLING A WARM FRONT THROUGH THE REGION.
WILL KEEP THE WIND ADVISORY UP FOR THE HIGHER TERRAIN OF EAST TN AND SW NC FOR TONIGHT DURING THE TIME OF THE STRONGEST LOW LEVEL JET.
CANNOT ARGUE TOO MUCH WITH THE CHC POP NUMBERS ALREADY IN THE GRIDS THROUGH THE END OF THE WEEK AS THE PERSISTENT UPPER TROFFING HELPS TO KEEP THE ACTIVE SUB-TROPICAL JET IN PLACE OVER THE REGION. MAIN ISSUE WITH THE UPCOMING FCST LOOKS TO BE THE STRONG CLOSED UPPER LOW PROGGED TO MOVE INTO THE AREA FROM THE WEST LATE SUN/ EARLY MON.
342 PM EST WED DEC 23 2015 UPPER AIR PATTERN CONSISTS OF A 500 MB TROUGH OVER THE NORTHERN AND CENTRAL PLAINS WHICH REMAINS THROUGH TODAY AND HELPS TO BUILD A RIDGE UP ON THE EAST COAST. THIS TROUGH MOVES INTO THE AREA TONIGHT. WITH SOME SUNSHINE TEMPERATURES WILL CLIMB INTO THE LOWER AND MIDDLE 30S. ATTENTION WILL THEN TURN TO NORTHERN STREAM UPPER TROUGHING MOVING EASTWARD ALONG THE CANADIAN BORDER TOWARDS THE UPPER GREAT LAKES ALONG WITH SHORT WAVE ENERGY LIFTING NORTHEASTWARD FROM THE DEVELOPING CLOSED LOW OVER THE FOUR CORNERS REGION.
A COLD FRONT WILL CROSS THE CANADIAN BORDER DURING THE AFTERNOON AND IS EXPECTED TO MOVE ACROSS OUR AREA DURING THE EARLY TO LATE EVENING HOURS.
A STRONG BERMUDA HIGH WILL REMAIN ANCHORED OVER THE ATLANTIC WITH AN ANOMALOUS RIDGE ENCOMPASSING FLORIDA. THIS RIDGE WILL FLEX ITS MUSCLE TOMORROW THROUGH CHRISTMAS DAY SENDING MAX TEMPS INTO THE MID 80S CHRISTMAS EVE AND CHRISTMAS DAY WITH A COUPLE OF RECORDS POSSIBLE. SULTRY DEWPOINTS IN THE LOWER TO MID 70S WILL TRANSLATE TO MAXIMUM HEAT INDICES REACHING AROUND 90F DEGREES EACH OF THE NEXT FEW DAYS. A CUT OFF LOW WILL MOVE INTO THE SOUTHERN PLAINS WITH RIDGING CONTINUING ACROSS THE SOUTHEASTERN STATES. THIS RIDGE WILL KEEP FRONTAL SYSTEMS FROM REACHING SOUTH FLORIDA WITH WARM, HUMID CONDITIONS CONTINUING. A STEADY EAST SOUTHEAST WIND WILL CONTINUE RIP CURRENT GENERATION THROUGH THE WEEKEND, SO EXTENDED THE HIGH RISK OF RIP CURRENTS THROUGH THE HOLIDAY WEEKEND.
A COLD FRONT PASSED THROUGH OK/N TX LAST NIGHT/THIS MORNING. AND ANOTHER COLD FRONT IS EXPECTED TO ARRIVE TOMORROW MORNING. MODELS SHOW A TROUGH DIGGING IN THE WESTERN U.
STILL MAINTAIN A TRACE WILL BE POSSIBLE THIS EVENING WITH INCREASED WINDS AND COOLER TEMPERATURES WITH THE FRONT. LATER IN THE AFTERNOON CLOUDS WILL BUILD IN WITH INCREASING MOISTURE AHEAD OF THE NEXT UPPER LEVEL TROUGH. TEMPERATURES FOR THURSDAY WILL HOVER AROUND FREEZING ON THE PLAINS AND LOW TEENS TO UPPER SINGLE DIGITS FOR THE MOUNTAINS. UPPER LEVEL TROUGH WILL DIG SOUTH OVER THE DESERT SOUTHWEST CHRISTMAS EVE NIGHT AND CHRISTMAS DAY. A MOIST SOUTHWEST FLOW ALOFT WILL PREVAIL OVER COLORADO AHEAD OF THIS TROUGH. LIFT AHEAD OF THE TROUGH WILL BRING SNOW TO THE MOUNTAINS. BUT ENOUGH LIFT FROM THE TROUGH AND JET WILL PREVAIL FOR WIDESPREAD SNOW LATE THURSDAY NIGHT AND CHRISTMAS DAY. THIS UPPER LEVEL TROUGH OVER THE SOUTHWEST WILL CLOSE OFF AND DIVE SOUTHEAST INTO MEXICO.
MVFR CIG CONDITIONS POSSIBLE AT KGLS AND KLBX TOMORROW MORNING AS A WEAK STATIONARY FRONT ALONG THE COAST BEGINS TO MOVE INLAND AS A WEAK WARM FRONT. /ISSUED 533 AM CST WED DEC 23 2015/ A S/WV TROUGH WILL MOVE EAST OF THE REGION TODAY.
A COLD LOW PRESSURE TROUGH WILL CREATE THE POSSIBILITY OF SHOWERS LATE CHRISTMAS EVE THROUGH CHRISTMAS MORNING.
Water vapor imagery indicates this system is deeply stacked with the upper low, which will force the low to weaken over time, but not before soaking rains come our way. First, the moisture moving into the region must saturate the dry column over the lower and mid levels of the troposphere.
339 AM EDT MON OCT 26 2015 HIGH PRESSURE BUILDS OVER NEW ENGLAND THROUGH TUESDAY. THE HIGH WILL SHIFT EAST TUESDAY NIGHT.
UPPER TROUGH CURRENTLY PASSING THROUGH IDAHO HAS PROVED WETTER THAN FORECAST WITH SHOWERS EXTENDING AS FAR SOUTH AS THE SNAKE RIVER. TROUGH WILL EXIT WESTERN IDAHO BY SUNRISE BUT THE MAIN UPPER LOW. STRONG NNWLY FLOW ALOFT WILL USHER IN COOLER AIR WITH HIGH TEMPS TODAY AND TUESDAY RANGING FROM NEAR 50 IN THE NRN MOUNTAINS TO THE LOWER 60S IN THE TREASURE VALLEY. LOWS TONIGHT WILL BE COLDER THAN PAST FEW NIGHTS RANGING FROM THE 20S IN THE MOUNTAINS TO MID 30S WITH PATCHY FROST IN THE LOWER AG VALLEYS. AS THE SHORT-LIVED UPPER LEVEL RIDGE MOVES EAST.
AS UPPER LEVEL TROUGHING INFLUENCES MOVE INTO OUR AREA AS TUE PROGRESSES AND LASTING INTO AT LEAST A GOOD PORTION OF THE DAY ON WED. LOWS ARE EXPECTED TO DROP MAINLY INTO THE LOWER 50S.
330 AM CDT MON OCT 26 2015 HIGH PRESSURE WILL CONTINUE TO MOVE OUT OF THE REGION MONDAY AS WAVES OUT OF THE SOUTHERN ROCKIES AND PACIFIC NORTHWEST EMERGE.
305 AM PDT MON OCT 26 2015 WARM AND DRY CONDITIONS TODAY WILL GIVE WAY TO INCREASING CLOUDS FOR TOMORROW AS LOW PRESSURE NEARS THE CALIFORNIA COAST.
114 AM EDT MON OCT 26 2015 A LARGE AREA OF HIGH PRESSURE OVER ONTARIO EXTENDED SOUTH ACROSS LAKE ERIE. THE HIGH WILL MOVE EAST EARLY IN THE WEEK. LOW PRESSURE FROM THE GULF COAST WILL MOVE NORTH.
148 AM EDT MON OCT 26 2015 HIGH PRESSURE OVER THE NORTHERN GREAT LAKES WILL BRING FAIR AND DRY WEATHER TONIGHT.
319 AM EDT MON OCT 26 2015 1031MB HIGH PRESSURE PRESENTLY OVER NORTHERN LAKE HURON. A WARM FRONT IS STRETCHED ACROSS SE SD. HIGH PRESSURE WILL REACH LK ONTARIO BY 18Z. PROBABLY MORE IMPORTANT IS THAT THE MID-LEVEL OUTRUNS THE LOW-LEVEL INFLOW.
THE MID/UPPER LOW ASSOCIATED WITH IT SITS OVER WEST CENTRAL LOUISIANA. WITH THE HIGHEST TOTALS. AS THIS LOW SHIFTS FURTHER EAST.
156 AM EDT MON OCT 26 2015 CLOUDS WILL CONTINUE TO DIMINISH THIS EVENING AS HIGH PRESSURE BUILDS OVER THE REGION AND BRINGS FAIR WEATHER.
556 AM CDT MON OCT 26 2015 BAND OF LIGHT PRECIPITATION ACROSS CENTRAL MINNESOTA INTO NORTHERN WISCONSIN THIS MORNING IS BEING FORCED BY A WEAK SHORT WAVE TROUGH OVER NORTHWEST MINNESOTA AND FROM FRONTOGENESIS ALONG THE WEAK SURFACE BOUNDARY. THE SHORT WAVE TROUGH WILL MOVE PAST THE AREA AFTER SUNRISE WITH THE 26.
619 AM EDT MON OCT 26 2015 HIGH PRESSURE EXTENDING OVER THE AREA TODAY WILL MOVE EAST TO NEW ENGLAND TONIGHT AND EARLY TUESDAY.
607 AM EDT MON OCT 26 2015 DRY CONDITIONS AND LIGHT EASTERLY WINDS WILL PERSIST TODAY INTO TONIGHT AS A RIDGE OF HIGH PRESSURE SHIFTS EAST THROUGH THE GREAT LAKES REGION.
410 AM EDT MON OCT 26 2015 HIGH PRESSURE WILL BRING FAIR WEATHER THROUGH TUESDAY AFTERNOON.
FOR TONIGHT PRESSURE GRADIENT CHANGES LITTLE AS LOW PRESSURE SLOWLY DEEPENS ALONG THE FRONT RANGE AHEAD OF APPROACHING UPPER TROUGH. MODELS IN MUCH BETTER AGREEMENT BRINGING THE LEADING EDGE OF THE UPPER TROUGH AXIS INTO THE FORECAST AREA. HIGH TEMPERATURES IN THE LOW TO MID 60S. MODELS BRING UPPER TROUGH ACROSS THE UPPER ROCKIES/PLAINS REGION MONDAY NIGHT ON THRU TUESDAY NIGHT. THE COMBINATION OF THE UPPER TROUGH MERGING WITH THE TROPICAL REMNANTS OF PATRICIA OVER THE EAST/MIDWEST. AND MODELS SHOWING A DEEPENING TROUGH OVER THE WEST COASTAL REGION. WILL ALLOW FOR H5 RIDGE AMPLIFICATION OVER THE CENTRAL PORTION OF THE COUNTRY.
A SLOW RETREAT OF MID LEVEL RIDGING WILL ALLOW MOISTURE DEPTH TO GRADUALLY INCREASE BUT THE MAIN PRECIPITABLE WATER CLIMB IS TONIGHT. STACKED LOW PRESSURE OVER THE CENTRAL GULF GETS ENTRAINED INTO A DEVELOPING TROUGH OVER THE CENTRAL US. WINDS WILL VEER TO SOUTHERLY BY LATE IN THE MORNING AS AN ILL-DEFINED WARM FRONT TREKS NORTH THROUGH THE AREA.
259 AM CDT MON OCT 26 2015 Brief upper ridging over the area today will provide mild wx for W TX and SE NM. A weak trough will move across NM and the TX Panhandle tonight but have little affect on the region.
645 AM EDT MON OCT 26 2015 HIGH PRESSURE OVER THE NORTHERN GREAT LAKES WILL BRING FAIR AND DRY WEATHER THROUGH TUESDAY.
HIGH PRESSURE ALOFT WILL KEEP THE WEATHER RATHER WARM ACROSS THE REGION THROUGH TUESDAY.