Aikyam-Lab/Synoptic-Bench huggingface dataset:
249 AM EDT THU JUN 18 2015 HIGH PRESSURE OVER THE AREA WILL MOVE OFFSHORE TODAY. A COLD FRONT WILL MOVE OUT OF QUEBEC AND CROSS MAINE TONIGHT. ANOTHER AREA OF HIGH PRESSURE WILL FOLLOW FOR FRIDAY. LOW PRESSURE EAST OF JAMES BAY WILL LIFT NORTHEAST TODAY WITH ITS ASSOCIATED COLD FRONT TO SWEEP ACROSS QUEBEC. ONSHORE FLOW WILL KEEP TEMPS MUCH COOLER ALONG THE COAST. BUT NW AREAS MAY BRIEFLY DROP INTO THE 40S TOWARD DAYBREAK AS THE SHOWERS MOVE OUT AND A COOLER/DRIER AIR MASS BEGINS TO OVERSPREAD THE AREA IN THE WAKE OF THE COLD FRONT. THE COLD FRONT WILL QUICKLY MOVE OFFSHORE FRIDAY MORNING. HIGH PRESSURE WILL FOLLOW IN THE FRONT'S WAKE, USHERING IN A COOLER AND DRIER AIRMASS.
THE DEEP LAYER RIDGING THAT HAS BEEN DOMINANT OVER THE SE CONUS THE PAST SEVERAL DAYS WILL BEGIN TO SHOW SIGNS OF BREAKING DOWN WHILE SLOWLY MOVING EASTWARD.
THOUGH STORMS WILL BECOME VERY ISOLATED AFTER FRIDAY AS A STRONG HIGH PRESSURE SYSTEM MOVES OVERHEAD. THIS HIGH PRESSURE SYSTEM WILL CROSS SLOWLY FROM THE WEST OVER THE WEEKEND.
TEMPERATURES TODAY WILL RANGE FROM NEAR 80 IN THE NORTHEAST THE LOWER 90S ACROSS THE WEST. UPPER LEVEL RIDGING IS EXPECTED TO BUILD IN FROM THE SOUTHWESTERN U. AN INVERTED 500MB TROUGH IS FORECAST TO DEVELOP OVER THE RIO GRANDE VALLEY INTO THE BIG COUNTRY.
330 AM CDT THU JUN 18 2015 A COLD FRONT IS PUSHING EAST THROUGH THE CWA AS OF EARLY THIS MORNING.
DEW POINTS AND WARMTH WILL INCREASE TODAY AS WARM FRONT IS PROGGED TO CROSS THE CWA THIS MORNING. A COLD FRONT IS THEN FORECASTED TO APPROACH AND CROSS THE REGION LATE TODAY.
543 AM CDT THU JUN 18 2015 THE SHORT TERM CONCERNS ARE THE CHANCE AND COVERAGE OF POSSIBLE CONVECTION ALONG SECONDARY COLD FRONT DROPPING OVER THE AREA TODAY. THE NORTHERN SYSTEM IS ASSOCIATED WITH THE COLD FRONT AND IS PROGGED TO DROP SOUTH DURING THE LATE MORNING/AFTERNOON. GENERATED BY ISENTROPIC UPGLIDE ON THE NORTHERN PERIPHERY OF A WARM FRONT. THE AFTERNOON ROUND OF CONVECTION WILL LIKELY DEVELOP ALONG THE COLD FRONT TO THE WEST OVER THE DAKOTAS.
HIGH PRESSURE WITH MORE HEAT AND HUMIDITY RETURNS BY THURSDAY AFTERNOON. WITH ANOTHER WEAK COLD FRONT ARRIVING ON FRIDAY. A WEAK FRONTAL BOUNDARY JUST TO THE SW OF THE FA WILL MOVE NORTH AND EAST ACROSS THE AREA OVERNIGHT AS A WARM FRONT.
THE COOLER EDGE OF THE 12 UTC DETERMINISTIC AND ENSEMBLE SUITES ARE FAVORED WITH A QUICK DIP POSSIBLY INTO THE UPPER SINGLE DIGITS BEFORE SOME MID TO UPPER LEVEL CLOUD DECKS PROPAGATE SOUTHEAST OUT OF CANADA.
AIRMASS IS STILL DRY AT THE LOW LEVELS INITIALLY WITH DEWPOINTS IN THE TEENS SO EXPECT A MOISTENING PROCESS TO DELAY AN ONSET OF SNOWFALL. TEMPERATURES SHOULD FALL VERY QUICKLY FRIDAY NIGHT IN RESPONSE TO FRESH SNOW COVER AND HIGH PRESSURE OVER THE REGION BUT LEESIDE TROFFING BEGINS TO FORM OVERNIGHT AND DOWNSLOPE SHOULD BEGIN BY 3 AM WHICH MEANS COLDEST TEMPERATURES WILL BE AROUND MIDNIGHT.
EAST WINDS 5 KNOTS TONIGHT TO BECOME SOUTHEAST ON FRIDAY AS HIGH PRESSURE SHIFTS EAST AHEAD OF THE NEXT FRONTAL BOUNDARY. /ISSUED 151 PM CST THU NOV 19 2015/ WEAK COLD FRONT CONTINUES TO MAKE SLOW BUT STEADY PROGRESS SOUTHEAST ACROSS THE FOUR STATE REGION THIS AFTERNOON.
521 PM CST THU NOV 19 2015 HIGH PRESSURE CENTERED OVER SOUTHERN MISSOURI IS KEEPING SKIES CLEAR OVER ARKANSAS. THIS HIGH WILL MOVE EAST FRIDAY AND WINDS WILL BECOME MORE SOUTHEAST.
WE WILL CONTINUE TO EXPERIENCE CLEAR SKIES AND LIGHT WINDS OVERNIGHT INTO TOMORROW, WITH HIGHS TOMORROW EXPECTED TO BE APPROXIMATELY 10 DEGREES COOLER COMPARED TO TODAY. CHATTANOOGA AIRPORT, TN 41 57 39 60 / 0 0 0 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 37 56 33 57 / 0 0 0 10 OAK RIDGE, TN 37 55 35 59 / 0 0 0 20 TRI CITIES AIRPORT, TN 35 53 28 57 / 0 0 0 10.
620 PM EST THU NOV 19 2015 A COLD FRONT CROSSES LATE THIS AFTERNOON AND EVENING. HIGH PRESSURE BUILDS IN FRIDAY.
933 PM EST THU NOV 19 2015 HIGH PRESSURE WILL BRING SUNNY BUT COOL CONDITIONS ON FRIDAY.
THIS EVENING THROUGH FRIDAY NIGHT WATER VAPOR SHOWS DEEP UPPER TROF MOVING INTO THE GREAT LAKES WITH DISTURBED NW FLOW EXTENDING BACK THROUGH THE PAC NW. HIGH PRESSURE BUILDS IN FRIDAY NIGHT WITH CLEARING SKIES AND LIKELY OUR COLDEST NIGHT OF THE SEASON THUS FAR WITH LOWS IN THE 5 TO 15 RANGE.
A STRONG COLD FRONT IS EXPECTED TO PUSH SOUTH ACROSS THE CWA ON FRI AM. COMBINED WITH FAVORABLE OROGRAPHICS OVER THE PINE RIDGE BENEATH EXCELLENT LARGE SCALE SUPPORT WITH H7-H5 DIV-Q AND PVA SHOULD SUPPORT AT LEAST MODERATE ACCUMULATIONS. WITH THE MAIN UPPER TROUGH AND JETMAX RAPIDLY TRANSITING EAST OF OUR AREA FRIDAY EVENING.
925 PM EST THU NOV 19 2015 HIGH PRESSURE BUILDS IN THROUGH FRIDAY.
THE PREVIOUSLY MENTIONED COLD FRONT HAS WEAKENED AND IS BARELY NOTICEABLE IN SURFACE OBS AS OF 03Z. LN /ISSUED 324 PM CST THU NOV 19 2015/ THE COLD FRONT THAT BROUGHT 2 TO OVER 4 INCHES OF RAINFALL IN PORTIONS OF MADISON COUNTY IS SLIDING EAST INTO THE FLORIDA PANHANDLE THIS AFTERNOON. ALTHOUGH A SECONDARY COLD FRONT IS PUSHING INTO NW ALABAMA AT THIS TIME. ALTHOUGH DEWPOINTS MAY DROP INTO THE LOWER TO MID 30S NORTH OF THE TENNESSEE RIVER. ALTHOUGH THIS HIGH WILL BRING MUCH DRIER AIR AND COOLER TEMPERATURES INTO THE AREA. TEMPERATURES WILL BE SLIGHTLY COOLER TOMORROW. WITH THE COOLER START TO THE DAY.
Along with it will come cooler, drier air. High pressure will continue to dominate the area on Friday as well with high temps ranging through the 50s.
Temperatures were in the low to upper 50s with very dry air in place at the surface as dewpoints were in the teens to 20s. Some eastern Ozarks locations in the valleys may wind up in the lower to mid 20s.
HIGH PRESSURE ALOFT AND LIGHT OFFSHORE SURFACE FLOW WILL CONTINUE OUR MILD AND DRY WEATHER CONDITIONS THROUGH THE WEEKEND. QUIET WEATHER IS FORECAST THROUGH THE WEEKEND AS A RIDGE OF HIGH PRESSURE BUILDS INTO OUR REGION.
TEMPERATURES HAVE DROPPED QUICKLY IN THE COOLER MICROCLIMATES OF NORTHWEST OKLAHOMA SUCH AS KGAG.
EARLY THIS EVENING, THE HIGH PRESSURE RIDGE WAS CENTERED OVER SOUTHWESTERN MISSOURI AND WAS RIDGING EASTWARD INTO THE OHIO AND TENNESSEE RIVER VALLEYS. A HIGH PRESSURE SYSTEM WILL CROSS THE REGION.
SKIES WILL REMAIN CLEAR THROUGHOUT THE NIGHT AND TEMPS WILL DROP INTO THE LOW TO MID 40S BY MORNING. /28/ HIGH PRESSURE WILL BRING DRY WEATHER WITH SEASONABLE TEMPERATURES TO THE ARKLAMISS TONIGHT AND FRIDAY.
SUBJECTIVE 12Z UPPER-AIR ANALYSIS INDICATES A DEEP UPPER-LEVEL TROUGH OVER THE CENTRAL US. WITH A REINFORCING TROUGH IN WESTERN CANADA. A 125-KT UPPER-LEVEL JET WAS DIGGING BEHIND THE TROUGH INTO THE PACIFIC NORTHWEST. WITH RIDGE AXIS THROUGH WESTERN SD INTO EASTERN MT. NEAR- SURFACE TEMPERATURES WILL START ABOVE FREEZING IN ALL BUT THE FARTHEST NORTH AREAS OF THE CWA. THINK THAT THE ODDS OF WARNING-TYPE CONDITIONS ON THE SOUTHERN FRINGE OF THE WATCH ARE ON THE LOW SIDE.
REMAIN ON THE HIGH SIDE OF GUIDANCE AND MAY BE TOO WARM. LEE SIDE CYCLOGENESIS WILL COMMENCE THROUGH THE DAY FRIDAY WITH THE LOW CENTER DRIVING SOUTHEAST ACROSS THE WESTERN PLAINS WHILE AN INVERTED TROUGH EXTENDS NORTH INTO NORTHERN MISSOURI WITH A SECONDARY LOW DEVELOPING IN THAT REGION. HIGH PRESSURE RIDGE MOVING ACROSS THE STATE INTO FRIDAY MORNING WILL LEAVE A VAST AMOUNT OF DRY AIR IN PLACE BELOW 850 MB. WILL NEED TO RELY ON PRECIPITATION LOADING BELOW THIS LAYER FOR SATURATION IN THE LOW LEVELS AND ACCUMULATING PRECIPITATION ONSET. EXPECT THE RAIN TO SNOW TRANSITION TO OCCUR QUICKLY WITH VERY COLD TEMPERATURES ALOFT AND NEAR SFC WETBULBS FALLING TO NEAR FREEZING RAPIDLY.
950 PM EST THU NOV 19 2015 MINOR ADJUSTMENTS MADE ON OVERNIGHT TEMPS TO RAISE/LOWER SOME PORTIONS OF AREA BASED ON OBSERVED RADIATIONAL COOLING EFFECTS AND SECONDARY ADVECTION OF COOLER/DRIER AIR FROM HIGH BUILDING INTO THE NORTH. INITIAL COLD FRONT THAT BROUGHT US THE SQUALL LINE YESTERDAY IS FINALLY KICKING SOUTHEAST OF THE AREA. A SECONDARY COLD FRONT IS BEGINNING TO PUSH ACROSS TENNESSEE AND INTO ALABAMA. THE LEADING EDGE OF THIS BOUNDARY WILL BECOME ILL DEFINED WITH TIME AS THE PARENT CYCLONE MIGRATES WELL INTO CANADA.
/issued 323 PM CST THU NOV 19 2015/ (Tonight and Friday) Temperatures were a few degrees cooler today behind the cold front that moved through overnight and this morning. This will result in warmer overnight lows, mainly in the 40s, and possibly some clouds developing across the area. Friday will be a few degrees warmer than today with highs mainly in the lower 70s under partly cloudy skies after the morning clouds scatter out.
INITIAL COLD FRONT THAT BROUGHT US THE SQUALL LINE YESTERDAY IS FINALLY KICKING SOUTHEAST OF THE AREA. A SECONDARY COLD FRONT IS BEGINNING TO PUSH ACROSS TENNESSEE AND INTO ALABAMA. THE LEADING EDGE OF THIS BOUNDARY WILL BECOME ILL DEFINED WITH TIME AS THE PARENT CYCLONE MIGRATES WELL INTO CANADA.
HIGHS SHOULD BE ABOUT 4-7 DEGREES COOLER THAN WE'RE SEEING THIS AFTERNOON.
TEMPERATURES WERE RUNNING ABOUT 10 DEGREES COOLER THAN YESTERDAY ACROSS THE FORECAST AREA IN THE WAKE OF THE PASSAGE OF A COLD FRONT THIS MORNING. THIS TROUGH WILL SEND A STRONG FRONT PLUNGING SOUTHWARD THROUGH COLORADO AND KANSAS BY AFTERNOON. THOUGH THIS IS NOT AS CERTAIN AS 24 HOURS AGO GIVEN SOME SLOWING OF THE PARENT TROUGH EXITING WYOMING.
555 PM CST THU NOV 19 2015 An area of high pressure, currently centered over Kansas, will drift east tonight, with the center reaching Kentucky by daybreak Friday. This motion will push an associated ridge axis into the forecast area by late tonight. The approach of the high and dry airmass in place will provide quiet weather across central and southeast Illinois tonight. Challenging forecast today as watching northern stream wave topping northeast Pacific ridge and possed to plunge into the longwave trough over central North America. With cold air already in place in wake of last system and elongated high pressure extending southwest into Texas inhibiting pre-wave waa aloft, seems as though precip-type will depend on lower atmosphere. Even with ground temperatures above freezing (4-inch soil temp at PIA is 51 degrees) snowfall intensity may be high enough to outpace melting.
The high moves east, with temps seasonal for mid Nov.
A DEEP AND BROAD MID- LATITUDE CYCLONE CENTERED NEAR THE GREAT LAKES HAS SCOURED-OUT LOWER HEIGHTS ACROSS THE EASTERN UNITED STATES. ERODING THE SUBTROPICAL RIDGE. THE RIDGE DISPLACED TO OUR EAST AND THE TAIL END OF A COLD FRONT STALLING ACROSS THE NORTHEASTERN GULF OF MEXICO.
926 PM CST THU NOV 19 2015 HIGH PRESSURE IS BUILDING ACROSS THE REGION. /ISSUED 302 PM CST THU NOV 19 2015/ WEAK COLD FRONT HAS PUSHED THROUGH ALL BUT THE FAR SOUTHEAST MIDSOUTH COUNTIES THIS AFTERNOON. READINGS RANGED FROM NEAR 60F NORTH TO THE LOW 70'S SOUTH. AFTER SEEING WARMER HIGHS TODAY HAVE AGREED WITH THE MODELS THAT INCREASING WAA SHOULD PROVIDE FOR WARMER THAN FORECASTED HIGH TEMPERATURES TOMORROW.
SNOW RATIOS WILL BE LOWER THAN CLIMO BECAUSE OF THE WARMER MOUNTAIN TOP TEMPERATURES. GRADIENT FLOW STAYS STRONG AND RIDGETOP WINDS WILL BE BLUSTERY. CURRENT THINKING IS THAT A WINTER STORM WARNING IS NEEDED FOR THE HIGHER ELEVATIONS OF THE PARK RANGE. 110 KT JET MOVES OVER NORTHWEST COLORADO ON FRIDAY PULLING IN COOLER AIR FROM THE NORTHWEST TO THE NORTHCENTRAL MOUNTAIN CORRIDOR.
526 PM CST THU NOV 19 2015 FOR 00Z TAFS /ISSUED 324 PM CST THU NOV 19 2015/ THE COLD FRONT THAT BROUGHT 2 TO OVER 4 INCHES OF RAINFALL IN PORTIONS OF MADISON COUNTY IS SLIDING EAST INTO THE FLORIDA PANHANDLE THIS AFTERNOON. ALTHOUGH A SECONDARY COLD FRONT IS PUSHING INTO NW ALABAMA AT THIS TIME. ALTHOUGH DEWPOINTS MAY DROP INTO THE LOWER TO MID 30S NORTH OF THE TENNESSEE RIVER. ALTHOUGH THIS HIGH WILL BRING MUCH DRIER AIR AND COOLER TEMPERATURES INTO THE AREA. TEMPERATURES WILL BE SLIGHTLY COOLER TOMORROW. WITH THE COOLER START TO THE DAY.
TEMPS WILL BE COOLER THERE AS WELL. THE COOLER EDGE OF THE 12 UTC DETERMINISTIC AND ENSEMBLE SUITES ARE FAVORED WITH A QUICK DIP POSSIBLY INTO THE UPPER SINGLE DIGITS BEFORE SOME MID TO UPPER LEVEL CLOUD DECKS PROPAGATE SOUTHEAST OUT OF CANADA.
Modest moisture return ahead of the approaching cold front should result in some areas of showers later Friday night.
COOLER AND DRIER CONDITIONS ARE EXPECTED ON FRIDAY. COLD FRONT WILL CONTINUE TO MOVE THROUGH THE REGION TONIGHT.
WINDS WILL GRADUALLY INCREASE IN THE HIGH COUNTRY OVERNIGHT AND BY MORNING WILL BEGIN TO SURFACE OVER THE LOWER ELEVATIONS. WINDS WILL BE FROM THE WEST TO NORTHWEST AT 15 TO 30 GUSTING TO 50 MPH AT TIMES IN THE HIGH COUNTRY. THESE WINDS WILL BEGIN TO SPREAD DOWN TO THE LOWER ELEVATIONS. A COLD FRONT WILL SHIFT SOUTH THROUGH THE PLAINS IN THE AFTERNOON.
POLAR HIGH PRESSURE OVER THE MISSOURI VALLEY WILL MOVE INTO THE OHIO VALLEY BY MORNING. MOSTLY SUNNY SKIES EXPECTED FOR FRI AFTERNOON WITH HIGHS IN THE LOWER/MID 70S. INCREASING CLOUDS EXPECTED FRI NIGHT INTO SAT WITH THE APPROACH OF THE NEXT STRONG COLD FRONT FROM CANADA. THE CENTER OF THE HIGH EXPECTED TO SETTLE OVER THE AREA. HIGHS MON ABOUT A COUPLE OF DEGREES WARMER THAN SUN.
ACCOMPANIED BY COOLER AND MORE SEASONABLE TEMPERATURES.
LINGERING LIGHT SHOWERS MOVING INTO THE EASTERN HIGHLANDS IMPACTING THE BENCHES EAST OF IDAHO FALLS WITH BRIEF OCCURRENCE OF FREEZING RAIN.
713 PM EST THU NOV 19 2015 HIGH PRESSURE OVER THE OHIO VALLEY WILL PROVIDE DRY AND SLIGHTLY BELOW NORMAL TEMPERATURES THROUGH FRIDAY. AND HIGHS ON FRIDAY WILL BE IN THE LOWER TO MIDDLE 40S.
THE SOUTHERN EXTENT OF THIS HIGH PRESSURE WILL RIDGE ACROSS THE FCST AREA TONIGHT AND FRIDAY. THIS WILL BRING DRIER AND COOLER AIR TO THE REGION DURING THE NEAR TERM FCST PERIOD. LIGHT NORTHEAST WINDS EXPECTED TO BECOME MORE EASTERLY ON FRIDAY AS THE RIDGE AXIS SHIFT EAST NORTH OF THE AREA. MUCH COOLER TONIGHT WITH LOW TEMPERATURES RANGING FROM THE LOWER 40S OVER INTERIOR NORTHERN ZONES.
719 PM EST THU NOV 19 2015 HIGH PRESSURE CURRENTLY OVER THE SOUTHERN PLAINS WILL MOVE ACROSS THE OHIO VALLEY FRIDAY.
Surface ridging will be slow to give way and as such winds will be mostly less than 5kts thru the night. Another upper trough will begin to move over the Central Plains by Friday evening.
AS THE WEATHER SYSTEM MOVES THROUGH A STRONG COLD FRONT WILL ALSO MOVE THROUGH SHIFTING WINDS TO THE NORTHWEST DURING THE AFTERNOON WITH GUSTS TO 40 MPH POSSIBLE. HIGH TEMPERATURES FRIDAY RANGING FROM THE UPPER 30S TO MID 40S IN YUMA COUNTY AND AREAS WITH SEVERAL INCHES OF SNOWCOVER REMAINING TO THE LOW/MID 50S ELSEWHERE.
918 PM EST THU NOV 19 2015 A COLD FRONT WILL CLEAR THE CHESAPEAKE BAY BY EARLY THIS EVENING.
/ISSUED 432 PM EST THU NOV 19 2015/ THE MAIN STORY FOR TODAY IS THE APPROACHING COLD FRONT. IT HAS PUSHED HIGH PRESSURE TO THE EAST, BRINGING A MORE SOUTH TO SOUTHEASTERLY FLOW TO SOUTH FLORIDA.
417 PM CST THU NOV 19 2015 A BROAD LONGWAVE TROUGH ACROSS IS SITUATED ACROSS THE CONUS TODAY. WITH RIDGING OFF THE WEST COAST AND ACROSS THE GULF OF MEXICO. A DECENT SNOWPACK ACROSS THE HIGHER TERRAIN OF NEW MEXICO. LOWS COULD DIP TO BELOW 36 DEGREES FOR PORTIONS OF THE FAR SOUTHEAST TEXAS PANHANDLE THAT HAVE YET TO EXPERIENCE MUCH IN THE WAY OF FREEZING TEMPS THIS SEASON. A STRONG COLD FRONT WILL PUSH THROUGH THE PANHANDLES TOMORROW NIGHT WITH NORTH WINDS OF 25 TO 35 MPH AND GUSTS UP TO 45 MPH.
/ISSUED 302 PM CST THU NOV 19 2015/ WEAK COLD FRONT HAS PUSHED THROUGH ALL BUT THE FAR SOUTHEAST MIDSOUTH COUNTIES THIS AFTERNOON. READINGS RANGED FROM NEAR 60F NORTH TO THE LOW 70'S SOUTH. AFTER SEEING WARMER HIGHS TODAY HAVE AGREED WITH THE MODELS THAT INCREASING WAA SHOULD PROVIDE FOR WARMER THAN FORECASTED HIGH TEMPERATURES TOMORROW.
423 PM CST THU NOV 19 2015 HIGH PRESSURE WILL BRING DRY WEATHER WITH SEASONABLE TEMPERATURES TO THE ARKLAMISS TONIGHT AND FRIDAY.
652 PM EST THU NOV 19 2015 HIGH PRESSURE WILL BRING SUNNY BUT COOL CONDITIONS ON FRIDAY.
535 PM EST THU NOV 19 2015 A COLD FRONT WILL APPROACH FROM THE WEST TONIGHT AND WILL CROSS THE REGION EARLY FRIDAY.
WINDS BACKED OFF LATE MORNING AS A SUBTLE RIDGE PASSED OVER. HOWEVER ANOTHER SUBTLE SURFACE PRESSURE TROUGH WITH A STRONG UPPER VORT WAS DROPPING INTO NORTHWEST WISCONSIN THIS AFTERNOON. THIS NEXT TROUGH WILL SLIDE OVER THE FORECAST AREA THIS AFTERNOON BEFORE DEPARTING EASTERN WISCONSIN THIS EVENING.
24 IS THE HIGHEST PW EVER OBSERVED FOR THIS DATE WHICH DATES BACK TO 1948. THE EXTREMELY MOIST AND UNSTABLE AIR MASS IS SUPPORTING A LARGE AREA OF LIGHT RAIN WITH EMBEDDED HEAVIER SHOWERS AND ISOLATED STORMS OVER THE REGION THIS EVENING AHEAD OF A COLD FRONT WHICH IS NOW MOVING THROUGH THE BIG BEND REGION. VFR WITH SOME MARGINAL MVFR CONDITIONS THIS EVENING WILL LOWER INTO THE IFR/LIFR RANGE AFTER 08Z AS LOW STRATUS AND FOG DEVELOP OVER THE REGION AHEAD OF A SOUTHWARD SINKING COLD FRONT WITH THESE CONDITIONS PERSISTING THROUGH 14Z ON FRIDAY. A WEAKENING COLD FRONT NOW MOVING THROUGH THE BIG BEND REGION THIS EVENING WILL SINK SOUTH THROUGH THE EASTERN GULF WATERS THE REMAINDER OF TONIGHT WITH THE FRONT STALLING OUT ACROSS THE SOUTH CENTRAL GULF WATERS DURING FRIDAY.
OFFSHORE WINDS AND HIGH PRESSURE WILL KEEP TEMPERATURES ABOVE NORMAL INTO THE WEEKEND.
912 PM EST THU NOV 19 2015 A COLD FRONT WILL APPROACH FROM THE WEST TONIGHT AND WILL CROSS THE REGION EARLY FRIDAY.
449 PM MST THU FEB 11 2016 00Z TAF CYCLE UPPER LVL RIDGE FROM LOWER CO RIVER VALLEY ACROSS THE GREAT BASIN TO SHIFT EASTWARD TO NEAR THE AZ NM STATE LINE BY END OF THIS FCST PERIOD. A RIDGE OF HIGH PRESSURE WILL CONTINUE TO DOMINATE THE WEATHER PATTERN OVER THE WESTERN U.
1031 PM EST THU FEB 11 2016 CURRENTLY - A RIDGE OF HIGH PRESSURE EXTENDS ACROSS THE FLORIDA PENINSULA AND THE ADJACENT GULF AND ATLANTIC WATERS. HOWEVER MOST SENSORS ALONG THE ISLAND CHAIN RANGE FROM THE UPPER 50S TO THE LOWER 60S. SHORT TERM UPDATE - THE RIDGE WILL REMAIN TO OUR NORTH. THIS WOULD ACT TO MIX IN WARMER AIR FROM GULF AND BAY SIDE WATERS CURRENTLY IN THE LOW TO MID 60S. A RIDGE AXIS EXTENDS ACROSS THE FLORIDA PENINSULA AND OUT ACROSS THE ADJACENT GULF AND ATLANTIC. DUE TO THE TIGHTER PRESSURE GRADIENT FURTHER AWAY FROM THE RIDGE AXIS. THE HIGH TEMPERATURE IN KEY WEST WAS 85 DEGREES.
WE DID GIVE SOME CONSIDERATION TO THE POSSIBILITY OF LIGHT FREEZING DRIZZLE IN FAR SOUTHWESTERN ND TONIGHT SINCE FORECAST SOUNDINGS IN PLACES LIKE BOWMAN SHOW THAT THE SATURATED LAYER IN THE LOW-LEVEL STRATUS LAYER WILL BE WARMER THAN -12 C.
THIS IS IN RESPONSE TO AN UPPER RIDGE BUILDING AHEAD OF A DEEPENING TROUGH NEAR 35N/140W. SKIES SHOULD REMAIN MOSTLY CLEAR THROUGH THIS EVENING BEFORE INCREASING AHEAD OF THE COLD FRONT TONIGHT. THE COLD FRONT WILL REACH THE COAST FRIDAY MORNING, THEN MOVING ONSHORE DURING THE DAY FRIDAY.
857 PM CST THU FEB 11 2016 A WEAK COLD FRONT CONTINUES TO SLIDE SLOWLY SOUTH OF I-20 CURRENTLY. WARMER TEMPERATURES AND HIGHER DEW PTS JUST AHEAD OF THE FRONT OVER OUR SOUTHEAST COUNTIES COULD LEND TO PATCHY FOG DEVELOPMENT FROM THE PREDAWN HOURS THROUGH MID MORNING. TEMPERATURES REMAIN ABOVE NORMAL AREAWIDE WITH AREAS NORTH OF THE FRONT IN THE LOW TO MID 70S AND UPPER 70S AND LOW 80S ACROSS THE SOUTHERN TWO THIRDS OF THE REGION. ALLOWING FOR COOLER AFTERNOON TEMPERATURES.
635 PM EST THU FEB 11 2016 SCATTERED SNOW SHOWERS SHOULD END TONIGHT AS HIGH PRESSURE BUILDS IN.
732 PM EST THU FEB 11 2016 MOISTURE WILL INCREASE TONIGHT AHEAD OF WEAK LOW PRESSURE. THE LOW WILL BE NEAR THE SOUTH CAROLINA COAST EARLY FRIDAY THEN MOVE FARTHER OFFSHORE FRIDAY AFTERNOON. MUCH OF THE MOISTURE ASSOCIATED WITH THE LOW WILL BE EAST OF THE FORECAST AREA. MUCH OF THE MOISTURE WITH THIS LOW WILL REMAIN EAST OF THE CWA. MOST AREAS ACROSS THE CENTRAL AND SOUTH WILL BE AT OR ABOVE FREEZING. TEMPERATURES ACROSS THE NORTHEAST AT SUNRISE WILL BE NEAR OR SLIGHTLY BELOW FREEZING. MODELS DO BRING IN A LIGHT MIXTURE OF RAIN/SNOW/ICE PELLETS/FREEZING RAIN OVER PORTIONS OF THE NORTHEAST BETWEEN 12Z AND 17Z. DRYING WILL BEGIN BY THE AFTERNOON AS THE LOW PUSHES AWAY FROM THE AREA. AFTERNOON HIGHS CLIMB INTO THE LOWER 40S NORTH.
Another cold front will cross the region over the next 15 hours with the wind picking up from the north tomorrow. /ISSUED 351 PM CST THU FEB 11 2016/ A cold front will move south across the forecast area Friday giving us a glancing blow of a very cold airmass that will settle into the Midwest and Ohio Valley.
SUSTAINED WIND SPEEDS ARE EXPECTED TO REMAIN BELOW 12 KNOTS DESPITE A COLD FRONT MOVING INTO THE AREA FRIDAY MORNING. LATEST VISIBLE AND INFRARED SATELLITE IMAGES ARE DEPICTING FEW HIGH LEVEL CLOUDS ALONG A COLD FRONT BOUNDARY OVER CENTRAL TEXAS. THE WEAK COLD FRONT WILL SLOWLY PUSH TO THE SOUTH OVERNIGHT INTO FRIDAY MORNING. RECENT WEATHER GUIDANCE ARE IN GOOD AGREEMENT WITH THE PASSAGE OF THIS COLD FRONT OVERNIGHT ACROSS SOUTH CENTRAL TEXAS (NORTHERN HILL COUNTRY). PATCHY FOG IS POSSIBLE ACROSS THE COASTAL PLAINS COUNTIES OVERNIGHT INTO FRIDAY MORNING AHEAD OF THE COLD FRONT. OVERNIGHT LOWS WILL DROP INTO THE 40S ACROSS THE HILL COUNTRY TO THE LOWER 50S ACROSS THE COASTAL PLAINS. DAYTIME TEMPERATURES WILL BE 2 TO 5 DEGREES COOLER THAN TODAYS RANGING FROM THE MID 70S ALONG INTERSTATE 35 TO LOWER 80S ALONG THE RIO GRANDE.
559 PM EST THU FEB 11 2016 SCATTERED SNOW SHOWERS SHOULD END TONIGHT AS HIGH PRESSURE BUILDS IN.
450 PM CST THU FEB 11 2016 NORTHWESTERLY FLOW WILL CONTINUE ALOFT THROUGH THE SHORT TERM PERIODS AS A RIDGE OF HIGH PRESSURE REMAINS IN PLACE ACROSS THE INTERMOUNTAIN WEST. TO HELP STEER A SURFACE COLD FRONT ACROSS THE REGION THIS EVENING. EXPECT ANOTHER CLOUDY AND SLIGHTLY COOLER DAY ACROSS THE REGION TOMORROW. WITH HIGH TEMPERATURES STRUGGLING TO CLIMB ABOVE FREEZING ACROSS MUCH OF SOUTH CENTRAL NEBRASKA. WITH SLIGHTLY WARMER TEMPERATURES FORECAST ACROSS NORTH CENTRAL KANSAS. GENERALLY LIGHT NORTHERLY WINDS WILL FILTER IN BEHIND THE PASSING COLD FRONT OVERNIGHT. SET UP BETWEEN TROUGHING OVER THE ERN CONUS /DRIVEN BY LOW PRESSURE SLIDING SOUTH OUT OF THE HUDSON BAY AREA/ AND BROAD RIDGING OVER THE ROCKIES.
538 PM CST THU FEB 11 2016 THE SURFACE DATA AT 19Z SHOWED THE WARM FRONT ACROSS THE WESTERN NEBRASKA SANDHILLS. WEAK LIFT IN THE SATURATED ISOTHERMAL LAYER OVER CENTRAL AND NORTHERN NEBRASKA WILL PRODUCE LIGHT FREEZING DRIZZLE LATE TONIGHT AFTER MIDNIGHT. THE WARM FRONT WILL BACK THROUGH WESTERN AND SOUTHERN NEBRASKA BRINGING MODERATE NORTH TO NORTHWEST WIND AND COLDER TEMPERATURES FRIDAY.
VISIBILITY HAS DROPPED TO AROUND 7 MILES ACROSS THE LOWER TREASURE VALLEY WHERE HUMIDITIES WERE IN THE 80S PERCENTS. DRY FORECAST ON TAP TONIGHT WITH PATCHY DENSE FOG ACROSS THE LOWER T.
925 PM EST THU FEB 11 2016 HIGH PRESSURE WILL BUILD IN OVERNIGHT.
906 PM EST THU FEB 11 2016 HIGH PRESSURE OVER THE STATE WILL KEEP LIGHT WINDS AND MAINLY CLEAR SKIES. NOT AS COLD OVERNIGHT WITH TEMPS ON TRACK TO FALL INTO THE LOWER TO MID 40S NORTH AND INLAND. HIGH PRESSURE WILL MOVE OVER THE STATE TONIGHT.
HIGH PRESSURE AND A DRYING NORTHWEST TO NORTH FLOW WILL KEEP CENTRAL ALABAMA DRY FOR THE NEXT SEVERAL DAYS.
BUT SOME HIGH CLOUDS ARE ON THE INCREASE IN THE NORTH AS A WEAK COLD FRONT APPROACHES THE AREA. TEMPERATURES ARE CURRENTLY IN THE 40S ON THEIR WAY TO LOWS RANGING FROM AROUND FREEZING IN THE NORTH TO NEAR 50 IN THE SOUTH. THE COLD FRONT WILL CONTINUE TO MOVE SOUTH ACROSS THE AREA OVERNIGHT INTO FRIDAY.
VFR CONDITIONS WILL CONTINUE ACROSS THE AREA THROUGH THE NEXT 24 HOURS AS A 500MB RIDGE ACROSS THE WESTERN UNITED STATES AND 500MB TROUGH ACROSS THE EASTERN U. THE AMPLIFIED RIDGE ACROSS THE WEST WILL GRADUALLY SHIFT EASTWARD WHILE KEEPING DRY WEATHER PATTERN ACROSS SOUTH TEXAS DURING MOST OF THE SHORT TERM PERIOD. A FEW CUMULUS WILL DEVELOP WITH MUCH LIGHTER WINDS AS MID LEVEL HIGH PRESSURE SHIFTS ITS CENTERED OVER SOUTH TEXAS FRI AFTERNOON.
/ISSUED 345 PM CST THU FEB 11 2016/ CURRENT SFC ANALYSIS SHOWS HIGH PRESSURE CENTERED OVER THE CNTL GULF OF MEXICO PROVIDING A WRLY/SWRLY LOW-LEVEL FLOW OVER THE FORECAST AREA. WATER VAPOR IMAGERY SHOWS TROFFING ALONG THE ERN SEA BOARD WITH WEAK DISTURBANCES EMBEDDED WITHIN THE NWRLY FLOW OVER THE CNTL CONUS. WHILE RIDGING LINGERS OVER THE WRN CONUS. FORECAST SOUNDINGS SHOW JUST ENOUGH WRLY COMPONENT TO THE LOW-LEVEL FLOW AHEAD OF THE FRONT TO KEEP MOISTURE FROM INCREASING SUFFICIENTLY SO STILL LOOKING AT A DRY FROPA TOMORROW. TEMPS WILL COOL BEHIND THE FRONT AS CANADIAN HIGH PRESSURE BUILDS SWD INTO THE FORECAST AREA. AS WE MOVE INTO THE WEEKEND THE HIGH WILL MOVE EWD ALLOWING A LOW-LEVEL RETURN FLOW TO SET UP OVER THE WRN GULF STATES.
HIGH PRESSURE WILL REMAIN OVER THE INTERMOUNTAIN WEST THROUGH FRIDAY.