Aikyam-Lab/Synoptic-Bench huggingface dataset:
306 PM MST SUN MAR 6 2016 LIFT AHEAD OF TH GREAT BASIN TROUGH IS MOVING OVER COLORADO WITH SOME LIGHT SHOWERS OVER THE MOUNTAINS. ON MONDAY THE TROUGH MOVES ACROSS WITH CYCLOGENESIS OVER EASTERN COLORADO. JUST EXPECTING SHOWERS OVER THE HIGH COUNTRY. NUDGED THE MODEL CONSENSUS TOWARDS SREF ENSEMBLE MEAN WHICH PRODUCES 4 TO 8 INCHES OF SNOW ACROSS MOST OF THE HIGHER MOUNTAINS. THERE COULD BE SOME ENHANCEMENT IN LARIMER COUNTY AS THE LOW DEVELOPS AND LOW LEVEL FLOW GOES MORE NORTHERLY DURING THE DAY. MAINLY A BIT WARMER ON THE PLAINS OVERNIGHT TONIGHT WITH THE CLOUD COVER. THE UPPER TROUGH WILL SHIFT ITS FOCUS FROM THE MOUNTAINS AND URBAN CORRIDOR TO THE NORTHEAST PLAINS BY MONDAY EVENING.
MONDAY WILL BE AS WARM IF NOT WARMER THAN TODAY. BUT THE LOW CLOUDS AND EASTERLY BREEZE WILL MAKE IT FEEL LESS PLEASANT THAN THE THERMOMETER INDICATES. A FEW LIGHT RAIN SHOWERS/DRIZZLE ARE POSSIBLE MONDAY AFTERNOON AS THE LOW LEVEL MOISTURE INCREASES.
524 PM EST SUN MAR 6 2016 HIGH PRESSURE WILL BUILD OVERHEAD TONIGHT AND WILL SETTLE OVER THE SOUTHEASTERN STATES THROUGH THE MIDDLE OF THE WEEK. A COLD FRONT MAY APPROACH LATE IN THE WEEK. REGION CURRENTLY UNDER NW FLOW ALOFT AS TROUGH MOVES OFFSHORE. HOWEVER HIGH PRESSURE IS QUICKLY ON ITS HEELS. THE HIGH WILL MOVE OVERHEAD TONIGHT. HOWEVER WAVES OF MID AND HIGH CLOUDS SPILLING OVER THE RIDGE WILL CROSS THE AREA AT TIMES. SUSTAINED POSITIVE TEMP/DEW POINT ADVECTION IN THE LOW LEVELS WILL RESULT IN UNSEASONABLY WARM CONDITIONS.
855 PM EST SUN MAR 6 2016 HIGH PRESSURE WILL BUILD OVERHEAD TONIGHT AND WILL SETTLE OVER THE SOUTHEASTERN STATES THROUGH THE MIDDLE OF THE WEEK. A COLD FRONT MAY APPROACH LATE IN THE WEEK. HIGH PRESSURE DIRECTLY OVERHEAD THIS EVENING WILL TRANSLATE SOUTHWARD TO A POSITION OVER EASTERN NORTH CAROLINA BY MONDAY MORNING. THIS WILL ALLOW FOR LIGHT SOUTHERLY FLOW TO DEVELOP OVERNIGHT (ESPECIALLY IN THE LOW LEVELS JUST ABOVE THE SURFACE). HOWEVER WAVES OF MID AND HIGH CLOUDS SPILLING OVER THE RIDGE WILL CROSS THE AREA AT TIMES. SUSTAINED POSITIVE TEMP/DEW POINT ADVECTION IN THE LOW LEVELS WILL RESULT IN UNSEASONABLY WARM CONDITIONS.
GIVE WAY TO DRIER AND WARMER CONDITIONS MID- WEEK.
1000 PM EST SUN MAR 6 2016 THE NEAR TERM SECTION HAS BEEN UPDATED BELOW WARMER WEATHER WILL BE THE RULE FOR THE UPCOMING WEEK.
624 PM EST SUN MAR 6 2016 HIGH PRESSURE WILL BUILD OVERHEAD TONIGHT AND WILL SETTLE OVER THE SOUTHEASTERN STATES THROUGH THE MIDDLE OF THE WEEK. A COLD FRONT MAY APPROACH LATE IN THE WEEK. REGION CURRENTLY UNDER NW FLOW ALOFT AS TROUGH MOVES OFFSHORE. HOWEVER HIGH PRESSURE IS QUICKLY ON ITS HEELS. THE HIGH WILL MOVE OVERHEAD TONIGHT. HOWEVER WAVES OF MID AND HIGH CLOUDS SPILLING OVER THE RIDGE WILL CROSS THE AREA AT TIMES. SUSTAINED POSITIVE TEMP/DEW POINT ADVECTION IN THE LOW LEVELS WILL RESULT IN UNSEASONABLY WARM CONDITIONS.
525 PM CST SUN MAR 6 2016 Despite increasing high clouds this afternoon, enough mixing has occurred to allow temperatures to rise into the lower to middle 70s with winds gusting as high as 45 mph in some locations.
COURTESY OF HIGH PRESSURE CONTROLLING THE GENERAL WEATHER SITUATION. THIS HIGH CENTERED OVER THE EASTERN CAROLINAS WAS BRINGING A SOUTHERLY FLOW ACROSS THE REGION.
922 PM EST SUN MAR 6 2016 THE AVIATION SECTION HAS BEEN UPDATED BELOW WARMER WEATHER WILL BE THE RULE FOR THE UPCOMING WEEK.
623 PM EST SUN MAR 6 2016 HIGH PRESSURE WILL BRING DRY WEATHER AND WARM TEMPERATURES THROUGH MID-WEEK. WHICH IS CLOSER TO WARMER MET VALUES. UPPER LEVEL RIDGE BUILDS ALOFT AND AT THE SURFACE ON MONDAY.
NICE TO SEE A RIDGE APPROACHING THE REGION RATHER THAN A TROUGH THIS EVENING. CHATTANOOGA AIRPORT, TN 42 68 48 72 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 37 64 46 71 / 0 0 0 0 OAK RIDGE, TN 39 65 46 71 / 0 0 0 0 TRI CITIES AIRPORT, TN 33 64 43 69 / 0 0 0 0.
Another round of stratus is in store for eastern terminals overnight, before leeside troughing veers sfc flow to SW and scours out PBL moisture. /issued 136 PM CST SUN MAR 6 2016/ Upper ridge over the area will give way to an upper trough moving in from the west. Had an initial weak trough move ashore CA coast today before tracking east and flattening the ridge. A stronger upper trough will move ashore Monday. As This trough digs southward it develops into a cut off low rolling along US/Mex border.
712 PM EST SUN MAR 6 2016 HIGH PRESSURE REMAINS IN CONTROL THIS EVENING AND WILL LEAD TO MOSTLY CLEAR TO PARTLY CLOUDY SKIES TONIGHT WITH MAINLY HIGH CLOUDS PASSING BY. 20Z SFC ANALYSIS SHOWS HIGH PRESSURE OVER EASTERN KENTUCKY WITH THE BENEFITS BEFALLING THE CWA. TEMPERATURES CLIMBED INTO THE LOW TO MID 50S FOR MOST OF THE AREA WITH SOME UPPER 50S NEAR THE VIRGINIA BORDER. THE MODELS ARE IN GOOD AGREEMENT ALOFT THROUGH THE SHORT TERM AS THEY ALL BUILD A MODERATE RIDGE INTO THE AREA THROUGH MONDAY.
717 PM EST SUN MAR 6 2016 A RIDGE OF HIGH PRESSURE WILL BUILD OVER THE STATE TODAY.
639 PM EST SUN MAR 6 2016 HIGH PRESSURE OVER NEW ENGLAND SHIFTS SOUTH THROUGH TONIGHT. A WEAK COLD FRONT WILL CROSS THE AREA MONDAY.
A COLD FRONT MOVING INTO WESTERN ARIZONA WILL BRING A CHANCE OF RAIN AND SNOW SHOWERS LATE THIS AFTERNOON AND INTO THE EVENING.
523 PM CST SUN MAR 6 2016 CURRENT SURFACE ANALYSIS SHOWS A WEAK AREA OF LOW PRESSURE CENTERED OVER CENTRAL SOUTH DAKOTA.
942 PM EST SUN MAR 6 2016 HIGH PRESSURE WILL IN PLACE ACROSS THE EASTERN SEA BOARD WILL SETTLE SOUTH TO JUST OFFSHORE OF THE STATE THROUGH MID-WEEK AS AN UPPER RIDGE BUILDS IN OVER THE STATE.
AT 8 PM MST - SNOW SHOWERS CONTINED ACROSS THE CENTRAL IDAHO MOUNTAINS AS AND UPPER LEVEL TROUGH TRACKED EAST ACROSS THE AREA. THIS TROUGH /AND ITS ASSOCIATED COLD FRONT/ BROUGHT SIGNIFICANT RAIN AND HIGH-ELEVATION SNOW TO SOUTHWEST IDAHO TODAY.
HIGH PRESSURE WILL REMAIN ANCHORED OFFSHORE THE SOUTHEAST COAST THROUGH MID WEEK. MOISTURE TRAPPED BELOW A BUILDING UPPER RIDGE AND ASSOCIATED SUBSIDENCE INVERSION MAY BE SLOWER TO DISSIPATE THIS EVENING THAN MODELS INDICATE.
637 PM EST SUN MAR 6 2016 SOUTHERLY FLOW WILL BE PRESENT FOR THE START OF THE WEEK WITH HIGH PRESSURE EAST OF THE REGION.
929 PM EST SUN MAR 6 2016 HIGH PRESSURE WILL BUILD ACROSS THE REGION FROM THE WEST TONIGHT BEFORE SETTLING ACROSS THE SOUTHEAST COAST MONDAY. A WARM FRONT WILL PASS OVER THE REGION MONDAY. BRINGING WARMER THAN NORMAL TEMPERATURES TO THE REGION THAT WILL LAST THROUGH THE REST OF THE WEEK.
SNOW LEVELS WILL DROP TO NEAR VALLEY FLOORS BY MONDAY MORNING BEHIND THE COLD FRONT. THE BEST FOCUS FOR SIGNIFICANT SNOW WILL BE OVER THE HIGHER TERRAIN OF WESTERN COLORADO LATER TONIGHT AND MONDAY MORNING WHERE WINTER WEATHER HIGHLIGHTS ARE IN EFFECT.
CURRENT SURFACE ANALYSIS SHOWS A WEAK AREA OF LOW PRESSURE CENTERED OVER CENTRAL SOUTH DAKOTA.
Gusty south winds will continue tonight into the day Monday, with the highest speeds and gusts at KABI. While some breaks in the cloud cover is occurring this afternoon, low clouds will quickly redevelop and lower across the area this evening and overnight as the low level jet intensifies. Temperatures will be quite warm tonight, with overnight lows in the lower 60s. The main upper level low will push into northern Mexico by Monday Night, as the main area of lift edges into West Texas.
956 PM EST SUN MAR 6 2016 HIGH PRESSURE WILL BRING DRY WEATHER AND WARM TEMPERATURES THROUGH MID-WEEK. BUT STRONG WARM ADVECTION TOWARD MORNING SHOULD HALT VALUES ON THE RIDGE TOPS. MIXING SHOULD RETURN EARLY AS SOUTHWEST FLOW RETURNS AND UPPER LEVEL RIDGING BUILDS.
THE UPPER LOW CIRCULATION IS NOW OVER SOUTHWEST UTAH WITH SOME LIGHTNING NOW INTO WESTERN COLORADO. LIFT AHEAD OF THE GREAT BASIN TROUGH IS MOVING OVER COLORADO WITH SOME LIGHT SHOWERS OVER THE MOUNTAINS. ON MONDAY THE TROUGH MOVES ACROSS WITH CYCLOGENESIS OVER EASTERN COLORADO. JUST EXPECTING SHOWERS OVER THE HIGH COUNTRY. NUDGED THE MODEL CONSENSUS TOWARDS SREF ENSEMBLE MEAN WHICH PRODUCES 4 TO 8 INCHES OF SNOW ACROSS MOST OF THE HIGHER MOUNTAINS. THERE COULD BE SOME ENHANCEMENT IN LARIMER COUNTY AS THE LOW DEVELOPS AND LOW LEVEL FLOW GOES MORE NORTHERLY DURING THE DAY. MAINLY A BIT WARMER ON THE PLAINS OVERNIGHT TONIGHT WITH THE CLOUD COVER. THE UPPER TROUGH WILL SHIFT ITS FOCUS FROM THE MOUNTAINS AND URBAN CORRIDOR TO THE NORTHEAST PLAINS BY MONDAY EVENING.
507 PM EST SUN MAR 6 2016 A RIDGE OF HIGH PRESSURE WILL BUILD OVER THE STATE TODAY.
612 PM EST SUN MAR 6 2016 THE AVIATION SECTION HAS BEEN UPDATED BELOW WARMER WEATHER WILL BE THE RULE FOR THE UPCOMING WEEK.
AS UPPER LEVEL FLOW BECOMES MORE SWLY IN NATURE AS STACKED CLOSED SFC/UPPER LEVEL LOW PRESSURE PATTERN BEGINS TO DEVELOP ACROSS THE CNTRL CA COASTLINE AND WITH THIS FEATURE CONTINUING TO DEEPEN AND STRENGTHEN AS IT MOVES INTO NRN MEXICO BY WED MORNING. AND STRONG RIDGING INFLUENCES SFC AND ALOFT SHIFT EWD OF THE MID ATLANTIC COASTLINE. USHERING IN A MUCH WARMER AIR MASS TO THE MID STATE. AFTER EVEN A MORE WARM NIGHT ON MON NIGHT WITH LOWS MAINLY IN THE LOWER 50S. AS HIGHS CLIMB INTO THE LOW TO MID 70S. THE ENTIRE LOW PRESSURE SYSTEM COMPLEX SFC/ALOFT SLOWLY MOVES NEWD INTO THE CNTRL MS RIVER VALLEY BY SUN MORNING. HIGH PRESSURE HAS SHIFTED EAST OF MIDDLE TENNESSEE WITH WEAK RETURN FLOW SETTING UP AND BKN CIRRUS CLOUDS STREAMING IN.
With high pressure in place, skies will be mostly clear with lows ranging from the lower 40s inland to the lower 50s at the coast.
HIGH PRESSURE HAS SHIFTED EAST OF MIDDLE TENNESSEE WITH WEAK RETURN FLOW SETTING UP AND BKN CIRRUS CLOUDS STREAMING IN.
INCREASINGLY WESTERLY COMPONENT TO THE LOWER TROPOSPHERIC WIND FIELDS EARLY MONDAY MORNING WILL ADVECT IN DRIER AIR AND RESULT IN THE STRATUS DIMINISHING EARLIER THAN ON SUNDAY MORNING. THIS SHOULD CHANGE THROUGH SUNSET AS SUBSIDENCE AND CLEARING EXPAND EAST BEHIND A MINOR UA TROUGH. AIDING IN THIS PROCESS WILL BE A MORE DEFINED S/W TROUGH LIFTING FROM NRN NM INTO CO BY MIDDAY AND SERVING TO KEEP WINDS THROUGHOUT THE COLUMN MORE SWLY.
SUBJECTIVE 12Z UPPER AIR ANALYSIS INDICATES A DIGGING WESTERN US TROUGH. WARMER TEMPERATURES ALSO WERE NOTED.
NO CHANGES WERE MADE TO THE LOW TEMPERATURE FORECAST FOR TONIGHT. LOW LEVEL FLOW AROUND THE BACK SIDE OF HIGH PRESSURE TO THE EAST AND LOW PRESSURE TO THE NORTHWEST SPREADING LOWER CLOUDS/CEILINGS AROUND 5-6 KFT OVER THE AREA. AS THE RIDGE MOVES EWD AND A STORM SYSTEM MOVES ONTO THE W COAST.
817 PM EST SUN MAR 6 2016 HIGH PRESSURE WILL BUILD TO THE NORTH OF THE AREA TONIGHT. COASTAL COUNTIES WILL SEE LOW TEMPERATURES ABOUT 5 TO 10 DEGREES WARMER THAN FURTHER INLAND.
1032 PM EST SUN MAR 6 2016 HIGH PRESSURE WILL EXTEND ACROSS THE AREA THROUGH THE WEEK. HIGH PRESSURE WILL PROVIDE MOSTLY CLEAR SKIES. CHARACTERIZED BY AN IMPRESSIVE MID-UPPER LEVEL RIDGE BECOMING SITUATED ACROSS THE EASTERN U. WITH A LARGE UPPER LEVEL CYCLONE CUTTING OFF ACROSS NORTHERN OLD MEXICO. LARGE HIGH PRESSURE WILL EXTEND WEST ACROSS THE SOUTHEAST U.
LIFT AHEAD OF THE GREAT BASIN TROUGH IS MOVING OVER COLORADO WITH SOME LIGHT SHOWERS OVER THE MOUNTAINS. ON MONDAY THE TROUGH MOVES ACROSS WITH CYCLOGENESIS OVER EASTERN COLORADO. JUST EXPECTING SHOWERS OVER THE HIGH COUNTRY. NUDGED THE MODEL CONSENSUS TOWARDS SREF ENSEMBLE MEAN WHICH PRODUCES 4 TO 8 INCHES OF SNOW ACROSS MOST OF THE HIGHER MOUNTAINS. THERE COULD BE SOME ENHANCEMENT IN LARIMER COUNTY AS THE LOW DEVELOPS AND LOW LEVEL FLOW GOES MORE NORTHERLY DURING THE DAY. MAINLY A BIT WARMER ON THE PLAINS OVERNIGHT TONIGHT WITH THE CLOUD COVER. THE UPPER TROUGH WILL SHIFT ITS FOCUS FROM THE MOUNTAINS AND URBAN CORRIDOR TO THE NORTHEAST PLAINS BY MONDAY EVENING.
ENDING THE WEEKEND ON A VERY SUNNY NOTE AS HIGH PRESSURE IS CENTERED OVER THE AREA THIS AFTERNOON.
831 PM EST SUN MAR 6 2016 SOUTHERLY FLOW WILL BE PRESENT FOR THE START OF THE WEEK WITH HIGH PRESSURE EAST OF THE REGION.
630 PM EST SUN MAR 6 2016 20Z SFC ANALYSIS SHOWS HIGH PRESSURE OVER EASTERN KENTUCKY WITH THE BENEFITS BEFALLING THE CWA. TEMPERATURES CLIMBED INTO THE LOW TO MID 50S FOR MOST OF THE AREA WITH SOME UPPER 50S NEAR THE VIRGINIA BORDER. THE MODELS ARE IN GOOD AGREEMENT ALOFT THROUGH THE SHORT TERM AS THEY ALL BUILD A MODERATE RIDGE INTO THE AREA THROUGH MONDAY.
1046 PM EST SUN MAR 6 2016 A PRESSURE RIDGE WILL EXTEND THROUGH THE FORECAST AREA TONIGHT AND MONDAY. THE RIDGE WILL PERSIST ALONG THE CAROLINA COAST THROUGH AT LEAST MID WEEK. STAYED ON THE COOLER SIDE OF GUIDANCE.
618 PM EST SUN MAR 6 2016 HIGH PRESSURE WILL BUILD ACROSS THE REGION FROM THE WEST TONIGHT BEFORE SETTLING ACROSS THE SOUTHEAST COAST MONDAY. A WARM FRONT WILL PASS OVER THE REGION MONDAY. BRINGING WARMER THAN NORMAL TEMPERATURES TO THE REGION THAT WILL LAST THROUGH THE REST OF THE WEEK.
HIGH PRESSURE WILL REMAIN ANCHORED OFFSHORE THE SOUTHEAST COAST THROUGH MID WEEK.
1002 PM EST SUN MAR 6 2016 A PRESSURE RIDGE WILL EXTEND THROUGH THE FORECAST AREA TONIGHT AND MONDAY. THE RIDGE WILL PERSIST ALONG THE CAROLINA COAST THROUGH AT LEAST MID WEEK. STAYED ON THE COOLER SIDE OF GUIDANCE.
907 PM PST TUE FEB 16 2016 A LOW PRESSURE TROUGH WILL MOVE INLAND ACROSS THE WEST ON THURSDAY. IT WILL BE NOTICEABLY COOLER ON WEDNESDAY AND THURSDAY AS CLOUDS INCREASE AHEAD OF AN APPROACHING COLD FRONT.
/ISSUED 931 PM CST TUE FEB 16 2016/ BEHIND A COLD FRONT THAT DROPPED THROUGH THE REGION EARLIER TODAY. WITH TEMPS OVER CENTRAL MO IN THE LOWER 40S. AS THE HIGH PRESSURE CENTER DROPS INTO EAST CENTRAL AR BY SUNRISE. A COLD FRONT WILL CONTINUE TO MOVE THROUGH THE MID SOUTH FOR THE REMAINDER OF THIS AFTERNOON INTO THIS EVENING. SHORT TERM MODELS INDICATE CYCLONIC FLOW WILL REMAIN IN PLACE ACROSS THE LOWER MISSISSIPPI VALLEY FOR WEDNESDAY AND WEDNESDAY NIGHT WITH HIGHS TOMORROW IN THE MIDDLE TO UPPER 40S NEAR THE TENNESSEE RIVER AND LOWER TO MIDDLE 50S ELSEWHERE.
WHILE TEMPS ARE SLIGHTLY COOLER. A DEEP TROUGH WAS LOCATED OVER THE ERN CONUS WITH RIDGING OVER THE WEST. TEMPERATURES WILL REACH THE LOWER 70S WEST WITH UPR 60S FURTHER EAST.
330 AM CST WED FEB 17 2016 HIGH PRESSURE WAS CENTERED OVER NW ONTARIO AT 08Z WITH A RIDGE AXIS EXTENDING SWD THROUGH THE FORECAST AREA. THE VERY DRY AIR ASSOCIATED WITH THE HIGH WAS WORKING TO ERODE THIS CLOUD COVER AND ITS POTENTIAL TO PRODUCE LAKE EFFECT SNOW SHOWERS. THE HIGH PRESSURE DRIFTS TO SOUTHERN LAKE MICHIGAN BY 00Z THURSDAY. LIGHTER WINDS OVER THE EAST CLOSER TO THE HIGH. MIN TEMPS WILL BE WARMER.
GUSTY WINDS CONTINUE ACROSS THE CHEYENNE RIDGE AND AREAS ALONG AND WEST OF THE LARAMIE RANGE THIS AFTERNOON. WINDS WILL BE RELATIVELY SUBDUED WEDNESDAY AS AN UPPER LEVEL RIDGE SHIFTS ACROSS THE ROCKIES. WITH THE RIDGE IN PLACE DRY CONDITIONS WILL PREVAIL TONIGHT THROUGH WEDNESDAY NIGHT. MODELS HAVE BEEN FAIRLY CONSISTENT WITH A TIGHTENING OF THE LOW LEVEL PRESSURE GRADIENT CRAIG TO CASPER THURSDAY AFTERNOON THROUGH MUCH OF THURSDAY NIGHT. AND THE FAR EASTERN PANHANDLE SITES LATE WEDNESDAY EVENING AS THE SURFACE PRESSURE GRADIENT STRENGTHENS OVER THE HIGH PLAINS.
STRONG LOW PRESSURE CURRENTLY MOVING THROUGH THE HEART OF THE CWA. THIS TREND WILL CONTINUE AS THE LOW MOVES NORTHEAST THROUGH NORTHERN NEW ENGLAND INTO QUEBEC OVER THE NEXT SEVERAL HOURS. AREAS JUST S/E OF THESE COUNTIES INCLUDING ELMIRA, BINGHAMTON WILL SEE A BIT LESS BUT MAY STILL SEE SLICK ROADS AND TREACHEROUS TRAVEL AS THE CHANGE OVER OCCURS AND TEMPS FALL BELOW FREEZING. WE'LL SEE ANOTHER PERIOD OF COLD BUT RELATIVELY SEASONAL TEMPERATURES ON WEDNESDAY WITH THE POTENTIAL FOR LIGHT SNOW SHOWERS AS WELL DUE TO A COLD FRONT AND ASSOCIATED UPPER LEVEL DISTURBANCE MOVING THROUGH. EXPECT SOME WEAK LAKE EFFECT WEDNESDAY NIGHT OVER CENTRAL NY BEFORE HIGH PRESSURE MOVES IN THURSDAY WITH COLD BUT DRY CONDITIONS.
A SIGNIFICANT CHANGE IN THE WEATHER REMAINS ON TRACK FOR THE AREA AS A COLD FRONT APPROACHES THE CALIFORNIA COAST. THIS COLD FRONT WILL RESULT IN MODERATE TO STRONG SOUTHERLY WINDS WEDNESDAY AND WELL NEEDED RAIN.
1149 PM CST TUE FEB 16 2016 Stubborn cloudiness persists over the region this afternoon as a low pressure system moves eastward generally over the I70 corridor. Surface counter-clockwise flow should help keep the low cloudiness over much of the region through the evening and into the overnight. A cold frontal boundary also pushed through this morning and has caused our surface winds to increase and veer northerly. Winds will begin to shift to a more southerly direction late Wednesday as high pressure moves east of the Ozarks into the southern Appalachians. Temperatures are going to warm well above average with much of the region hitting the lower 70s.
STRONG HIGH PRESSURE ALOFT OVER THE WESTERN STATES WILL PROVIDE DRY CONDITIONS WITH UNSEASONABLY WARM DAYTIME TEMPERATURES THROUGH THURSDAY.
A WEAK RIDGE OF HIGH PRESSURE EXTENDS FROM THE NORTH CENTRAL GULF OF MEXICO AND ACROSS EXTREME SOUTHEAST FLORIDA.
A trough of low pressure at the surface will develop along the lee of the Rockies through early this evening as an upper level ridge axis approaches the central and northern Rockies. Given the light winds expected with this boundaries along with clear skies will stay close to the latest guidance with the lows tonight mainly around 32 degrees. A westerly down slope flow will improve on Wednesday as the upper ridge axis crosses the central and northern Rockies. Based on this warming trend and improving down slope flow will continue to follow the previous forecast and warmer MAV guidance with highs mainly in the mid 60s to lower 70s across western Kansas. On Thursday a dry line will move across western Kansas during the day as the upper level ridge axis crosses the central United States.
LEAVING A PREVAILING WESTERLY FLOW WITH COOLER TEMPERATURES AND VARIABLY CLOUDY CONDITIONS FOR TODAY. AN UPPER LEVEL TROUGH ACROSS ONTARIO WILL SHIFT EASTWARD THIS AFTERNOON. A TRAILING COLD FRONT WILL THEN USHER IN COLDER TEMPERATURES. HIGH PRESSURE WILL BRING FAIR. RELATIVELY QUIET WX TODAY AS LOW PRESSURE DEPARTS NEWD INTO THE GULF OF ST.
300 AM CST WED FEB 17 2016 LOW CLOUDS LINGER ACROSS THE NORTH AS LOW LEVEL MOISTURE REMAINS HIGH UNDER THE EXITING LONGWAVE TROUGH. WILL KEEP HIGH TEMPERATURES A FEW DEGREES COOLER THAN YESTERDAY WITH HIGHS IN THE LOWER 50S TO LOWER 60S. OVERNIGHT LOWS WILL BE IN THE LOWER 30S NORTH TO UPPER 30S SOUTH.
1151 PM CST TUE FEB 16 2016 A band of light rain and snow has been progressing southeast across our forecast area, triggered by lift ahead of the advancing cold front. Thermal profiles are supporting enough melting in the lowest levels for light rain to reach the ground in areas south of Lincoln to Mattoon. Northwest winds behind the cold front should increase enough to keep dense fog out of the picture, but patchy fog could still develop. High pressure over the central Plains will track into Missouri tonight. Temperatures expected to fall into the lower 20s across the far northern CWA, but range into the upper 20s south of I-72.
254 AM CST WED FEB 17 2016 LATEST WATER VAPOR IMAGERY SHOWS THE BROAD UPPER LEVEL TROUGH MOVING EAST ACROSS THE EASTERN HALF OF THE CONUS. WHILE A FAIRLY AMPLIFIED RIDGE WAS SITUATED OVER THE WESTERN COAST. HIGH PRESSURE WILL MOVE TO THE NORTH OF THE AREA. THE AXIS OF THE UPPER LEVEL RIDGE WILL CONTINUE TO SHIFT EAST THROUGH THE NEXT COUPLE OF DAYS. AS AN UPPER LEVEL TROUGH SHIFTS OVER THE WEST COAST.
306 AM EST WED FEB 17 2016 LOW PRESSURE OVER QUEBEC DRAGGED A COLD FRONT ACROSS THE AREA EARLY THIS MORNING. WE'LL SEE LINGERING CLOUDS ACROSS THE HIGHER TERRAIN WITH PARTLY SUNNY SKIES ELSEWHERE. ANOTHER COLD FRONT WILL CROSS THE REGION TONIGHT AND EARLY THURSDAY ACCOMPANIED BY CLOUDS. WITH A FEW SNOW SHOWERS ACROSS THE HIGHER TERRAIN.
/ISSUED 305 PM CST TUE FEB 16 2016/ A COLD FRONT WILL CONTINUE TO MOVE THROUGH CENTRAL TEXAS LATE THIS AFTERNOON AND REACH THE TEXAS COAST OVERNIGHT. MORNING LOWS WEDNESDAY WILL BE COOLER THAN THE LAST SEVERAL DAYS AND RANGE FROM THE UPPER 30S TO THE MIDDLE 40S. AFTERNOON HIGHS THURSDAY WILL RANGE FROM THE MIDDLE 70S TO THE LOWER 80S.
HIGH PRESSURE BUILDING IN FROM THE GULF WILL VEER CURRENT WESTERLY WINDS NNW TOWARDS DAYBREAK ALONG EAST COAST AND NNE AT KAPF WITH LIGHT LAND BREEZE.
DECIDED TO ISSUE A FREEZING FOG ADVISORY THROUGH 4 AM. EXPECT THE HIGH CLOUDS TO BECOME MORE WIDESPREAD OVERNIGHT WHICH SHOULD KEEP THE FOG PATCHY. WINDS SHIFT TO MORE WESTERLY THU AFTN WITH A COLD FRONTAL PASSAGE.
There is some potential for another dense fog event since the low levels are already saturated from precip. The low level moisture will be persistent through Wednesday, and low clouds should hold tough through the day. A significant warmup will begin Thursday, when southerly low- level flow will develop on the back side of high pressure over the Appalachians. There should be plenty of sunshine as the strong south flow advects warmer and drier air into our region.
1129 PM CST TUE FEB 16 2016 ISSUED AT 250 PM| CST TUE FEB 16 2016 UPPER RIDGE TO THE WEST AND TROUGH OVER THE EASTERN CONUS WITH NORTHERN PLAINS IN NORTHWEST FLOW. WEST COAST RIDGE IS SLOWLY PROGRESSING EAST. NORTHWEST FLOW TONIGHT WILL BEGIN TO FLATTEN AS THE RIDGE AXIS MOVES TOWARDS THE ROCKIES. UNTIL THE RIDGE MOVES FURTHER EAST. A WEAK DISTURBANCE IS DRIFTING ACROSS THE HIGH PLAINS THROUGH THE OVERNIGHT HOURS AND EXPECT TO SEE A FEW RETURNS ON RADAR. ALSO WARMER AIR ARRIVES OVERHEAD. WARMER MAV/EC GUIDANCE SUGGEST UPPER 50S TO MID 60S FOR ALL BUT FAR NORTHEASTERN ZONES. THUS FORECAST FOLLOWS THE WARMER SIDE OF GUIDANCE. SOME GUIDANCE COMING QUITE WARMER AND TEMPERATURES WILL HAVE TO BE WATCHED. MOSTLY CLEAR FOR THE DAY AND GOOD WAA AHEAD OF UPPER TROUGH MOVING THROUGH THE NORTHERN PLAINS.
1148 PM CST TUE FEB 16 2016 A highly amplified upper pattern remains in place across the lower 48 this afternoon. remaining in-between the western ridge and eastern U. trough. ridge east. not a whole lot to talk about as cold advection stratus will remain with us for a good part of the night before a weak warm front starts to lift through the area early Wednesday morning. expect winds to gradually shift to the southeast which should allow warmer air to work back into the region. tomorrow's afternoon highs will be noticeably warmer than today's. The warmest day of the week will arrive on Thursday as a secondary warm front lifts north through the area as southerly flow increases ahead of another area of low pressure dropping into the Northern Plains. ridge axis slides east across our area.
237 AM EST WED FEB 17 2016 A COLD FRONT WILL PUSH SOUTHEAST ACROSS CENTRAL PA WEDNESDAY. FOLLOWED BY HIGH PRESSURE THURSDAY.
BUT AN OVERALL DRIER AND WARMER TREND IS EXPECTED AS THE WEEKEND APPROACHES. ALTHOUGH MODEL PROFILES INDICATE THAT THERE COULD STILL BE SOME FREEZING DRIZZLE. HAVE DECIDED TO KEEP THE FREEZING DRIZZLE MENTION IN OVERNIGHT IN CASE THERE ARE SOME PLACES WHERE ICE NUCLEATION IS NOT OCCURRING. THE EARLY EVE UPDATE FEATURED SOME COSMETIC ADJUSTMENTS TO ALREADY SMALL PRECIP PROBS AND WEATHER AS LIGHT SNOW AND POSSIBLY SOME FREEZING DRIZZLE ARE ANTICIPATED. ALBEIT WEAK ADVECTION UNDER UPR TROFG WITH AXIS STRETCHING FM THE GREAT LAKES TO THE EASTERN GULF.
THEN PICK UP OUT OF THE SOUTH AT 10 KT OR SO DURING THE MID TO LATE MORNING HOURS WEDNESDAY AS THE RIDGE SHIFTS EAST OF NORTH AND CENTRAL TEXAS. /ISSUED 305 PM CST TUE FEB 16 2016/ A COLD FRONT WILL CONTINUE TO MOVE THROUGH CENTRAL TEXAS LATE THIS AFTERNOON AND REACH THE TEXAS COAST OVERNIGHT. MORNING LOWS WEDNESDAY WILL BE COOLER THAN THE LAST SEVERAL DAYS AND RANGE FROM THE UPPER 30S TO THE MIDDLE 40S. AFTERNOON HIGHS THURSDAY WILL RANGE FROM THE MIDDLE 70S TO THE LOWER 80S.
1249 AM EST WED FEB 17 2016 A WEAK TROUGH MAY BRING A FEW SNOW SHOWERS TONIGHT INTO WEDNESDAY. HIGH PRESSURE WILL BRING DRY CONDITIONS THURSDAY.
FORECAST CONFIDENCE IS HIGH SOUTHERN WISCONSIN WILL BE IN A NORTHWEST FLOW IN THE UPPER LEVELS WITH A 145 KNOT JET MAX MOVING ACROSS THIS EVENING AHEAD OF A RIDGE MOVING INTO THE PLAINS. WITH A SOUTHEAST FLOW BEGINNING LATE TONIGHT AS THE HIGH REACHES THE EASTERN GREAT LAKES.
TWO HIGH PRESSURE RIDGES WILL BE OVER NM THROUGH THE FORECAST PERIOD. THEIR MAIN IMPACT WILL BE COOLER TEMPERATURES. A RIDGE OF HIGH PRESSURE THAT HAS BEEN TO OUR WEST WILL CROSS NM WEDNESDAY WHILE FLATTENING SOME. WITH A BETTER ORGANIZED LEE SIDE TROUGH DEVELOPING IN THE EAST AND PLENTY OF SUNSHINE STATE WIDE HIGHS WILL SOAR TO BETWEEN 15 AND 20 DEGREES ABOVE NORMAL. THE RIDGE WILL SHIFT EAST THURSDAY WITH SW FLOW TIGHTENING ALOFT. A WEAK UPPER LEVEL TROUGH WILL PASS NORTH OF NM LATER THURSDAY INTO THURSDAY NIGHT. LITTLE MOISTURE WILL BE AVAILABLE WITH ONLY A FEW LIGHT SHOWERS POSSIBLE OVER THE HIGH NORTHERN TERRAIN THURSDAY AND THURSDAY NIGHT.