Aikyam-Lab/Synoptic-Bench huggingface dataset:
A BETTER CHANCE OF RAIN WILL BE SEEN NORTHWEST ON TUESDAY NEAR THE APEX OF THE SURFACE INVERTED TROUGH AND DEFORMATION ZONE ALOFT. THE MAIN FEATURES INCLUDE THE LARGE EASTERN PACIFIC RIDGE AND DOWNSTREAM H500 TROUGH OVER THE WESTERN CONUS WITH A CANADIAN NORTHERN STREAM TROUGH BEGINNING TO PHASE. WITH TIME THESE FEATURES MERGE INTO A NEARLY FULL TROUGH AS THE NORTHERN STREAM TROUGH STRENGTHENS AND BECOMES MORE LATITUDINAL.
106 PM CDT MON MAR 28 2016 High pressure building back into the Midwest this morning. with the ridge axis just off to the west of the Miss River. but the upper low continuing to pull away from the Great Lakes will limit the coverage somewhat. However, the upper-level flow is expected to trend increasingly neutral today, while high pressure will begin to build in at the surface. A weak low-level trof sinking toward the area from the Great Lakes will likely have the back edge of the clouds push slightly westward early today as it passes through. Widespread highs in the 50s, much cooler than yesterday across much of the forecast area, look like a good bet. In the shorter term, high pressure will be drifting through the Midwest tonight and Tuesday, with dry weather prevailing.
259 PM EDT MON MAR 28 2016 GUSTY CONDITIONS WILL CONTINUE THROUGH THIS EVENING AS THE UPPER TROUGH PIVOTS TO THE EAST. HIGH PRESSURE WILL BUILD OVERHEAD TUESDAY PROVIDING DRY CONDITIONS THROUGH MIDWEEK. THE UPPER TROUGH WILL CONTINUE TO PIVOT ACROSS THE REGION THROUGH THIS EVENING. STRONG PRESSURE RISES WITH THE COLD FRONTS DEPARTURE AND STEEPENING LOW LEVEL LAPSE RATES CONTINUE TO SUPPORT STRONG WIND GUSTS. HIGH PRESSURE WILL BUILD INTO THE REGION TUESDAY BEHIND THE EXITING UPPER-LEVER TROUGH. TEMPERATURES WILL BE COOLER THAN AVERAGE AS 850MB TEMPS WILL REMAIN BELOW ZERO STEEP LOW-LEVEL LAPSE RATES SHOULD ENCOURAGE MIXING.
OUR REGION IS CURRENTLY IN THE WARM SECTOR OF THE LOW AND TEMPERATURES HAVE BEEN GENERALLY IN THE LOW 60S TO UPPER 50S THIS AFTERNOON. TROUGH OVER WESTERN CONUS BEGINS TO WRAP UP AND BECOME A GIANT 500MB CLOSED LOW OVER NEVADA/UTAH. AS WELL AS CHANCES FOR PRECIPITATION OVER NORTHEASTERN WYOMING AND THE BLACK HILLS AHEAD OF THE CLOSED LOW. TEMPERATURES WILL BE NEAR FREEZING OVERNIGHT SO COULD SEE RAIN/SNOW MIX OVER THE AFOREMENTIONED AREAS.
High pressure is building into the region from the northwest, with skies clearing from west to east at the same time. More sunshine tomorrow will mean temperatures rising to the low 60s for many locations. A light northeasterly flow would keep us from getting too much warmer, as high pressure moves over the eastern Great Lakes.
WIDESPREAD BLOWING DUST IS LIKELY ALONG WITH A CHANCE OF SHOWERS MAINLY IN THE HIGHER TERRAIN NORTH AND EAST OF LAS VEGAS.
NOTICEABLY COOLER AIR HAS SETTLED IN BEHIND YESTERDAYS COLD FRONTAL PASSAGE. A RIDGE OF HIGH PRESSURE WILL SETTLE ACROSS THE REGION TONIGHT PROVIDING CLEARING WITH DIMINISHING WINDS AND CHILLY CONDITIONS WITH LOWS IN THE UPPER 20S TO LOWER 30S.
1218 PM CDT MON MAR 28 2016 AN UPPER LEVEL RIDGE WILL BUILD OVER THE NORTHLAND TODAY AND TUESDAY. HIGH PRESSURE AT THE SFC WILL KEEP WINDS LIGHT TODAY. ON TUESDAY THE HIGH WILL MOVE ACROSS LOWER MICHIGAN AND THE OHIO VALLEY. WINDS WILL THEN INCREASE WITH A RETURN FLOW OF SOUTHERLY WINDS ON THE BACKSIDE OF THE HIGH. TEMPERATURES WILL WILL BE WARMER TODAY. BUT THEN BE MUCH WARMER TOMORROW IN THE STRONG WARM AIR ADVECTION PATTERN THAT HAS SET UP IN THE SOUTHERLY FLOW. THIS MORNING PATCHY FOG DEVELOPED UNDER THE RIDGE WHERE SKIES WERE CLEAR IN NWRN WI.
A WEAK UPPER LEVEL RIDGE OF HIGH PRESSURE WILL TRANSLATE ACROSS THE SRN HIGH PLAINS IN ADVANCE OF A DEEPENING UPPER LEVEL LOW PRESSURE SYSTEM OVER THE INTERMOUNTAIN WEST. SOUTH WINDS OF 25 TO 30 MPH WITH HIGHER GUSTS WILL BE THE MAIN WEATHER ELEMENT AS PRESSURE GRADIENT TIGHTENS IN RESPONSE TO LEESIDE TROFFING OVER ERN CO SWD INTO ERN NM. SOME SEMBLANCE OF A PSEUDO DRYLINE OR PACIFIC COLD FRONT WILL MOVE EWD ACROSS THE FCST AREA.
WATER VAPOR IMAGERY SHOWED THE CLOSED LOW OVER CA DROPPING SEWD. MID LEVEL RIDGE WAS IN PLACE. MID AND HIGH LEVEL MOISTURE WILL BE INCREASING TONIGHT AS THE RIDGE MOVES EWD. WITH A 500 MB RIDGE EXTENDING FROM JUST OFF THE CA COAST UP INTO AK. A TROUGH WILL STRETCH DOWN FROM HUDSON BAY INTO THE UPPER MIDWEST.
1227 PM CDT MON MAR 28 2016 MOSTLY SUNNY SKIES EXPECTED TODAY WITH HIGH PRESSURE SHIFTING EASTWARD THROUGH THE STATE TODAY. WITH A WARM FRONT ALOFT NOSING UP THROUGH THE WESTERN CWA THIS AFTERNOON. BRINGING TEMPERATURES INTO THE LOW TO MID 60S ACROSS THE FORECAST AREA BY TUESDAY AFTERNOON.
UPPER LOW REMAINS NEARLY STATIONARY OVER NORTHERN UTAH WITH A LOBE OR SPOKE OF VORTICITY ROTATING NORTHWARD ACROSS OUR COUNTIES.
SW FLOW ALOFT WILL CONTINUE DURING THE NEXT 36 HOURS AS LARGE UPPER TROUGH BUCKLES SOUTHWARD ALONG THE ROCKIES. THIS WILL DRAW A WARM FRONT BACK THROUGH THE REGION TUESDAY MORNING.
IF THE LOWER DECKS DO NOT COME IN TONIGHT. ALL IN ALL IT WILL BE A BEAUTIFUL AFTERNOON WITH HIGHS AROUND NORMAL FOR THIS TIME OF YEAR IN THE LOWER TO MID 70S.
318 PM CDT MON MAR 28 2016 Strong upper low was noted digging south over eastern California, with an embedded wave ejecting eastward towards the desert southwest. Lee trough ahead of the system has created gusty south to southeast winds this afternoon at 12 to 15 mph sustained. Decent chance for precip Tuesday is centered over an area of broad, weak forcing near a warm front over southern Nebraska. In terms of temps, trended cooler than previous forecast given the thicker/lower stratus over north central KS where lower 60s are likely.
143 PM EDT MON MAR 28 2016 A DEEPENING LOW PRESSURE CENTER TRAVELING ACROSS THE EASTERN GREAT LAKES WILL BRING CLOUDY. COOLER AND BREEZY CONDITIONS TODAY. HIGH PRESSURE AND A COOL.
213 PM CDT MON MAR 28 2016 Strengthening sw flow aloft thru Wed will promote amplification of the low level thermal along with a farther ewd position. A cold front on Thur will keep high temps mostly in the U60s-L70s range. Another surge of cooler air is expected on Fri ahead of a mid level trof. Said mid level trof will be slow to move across and temps will remain coolish Fr-Sat (65-70). Warmer and thus drier Sun/Mon. Similar conditions Wed although windier, but cooler with RH/s trending a few percent higher.
404 PM EDT MON MAR 28 2016 CLEARING WILL CONTINUE THROUGH THE EVENING HOURS AS A RIDGE OF HIGH PRESSURE SETTLES ACROSS THE REGION OVERNIGHT PROVIDING LIGHT WINDS AND CHILLY CONDITIONS WITH LOWS IN THE UPPER 20S TO LOWER 30S.
145 PM PDT MON MAR 28 2016 COOLER TEMPERATURES AND GUSTY WINDS TODAY AS WEAK FRONTAL BAND CONTINUES TO MOVE THROUGH THE REGION. A SLIGHT WARMING TREND EXPECTED REST OF THE WEEK AS HIGH PRESSURE SETTLES IN OVER THE AREA. THE LOW PRESSURE SYSTEM IMPACTING OUR WEATHER IS GENERALLY ON TRACK AND PRODUCING SCATTERED SHOWERS OVER THE SIERRA NEVADA. TEMPERATURES ARE MUCH COOLER COMPARED TO THIS TIME YESTERDAY. EXPECT THIS TO LAST THROUGH THIS EVENING WHILE THE COOLER AIR FLOWS INTO THE CENTRAL CA INTERIOR. THE UPPER LOW IS CURRENTLY OVER WESTERN NEVADA. THERE ARE A FEW ISOLATED SHOWERS BEGINNING TO DEVELOP ALONG THE I-5 CORRIDOR AND OVER THE HIGHER TERRAIN TO THE WEST.
MAIN FORECAST CONCERN IN THE SHORT TERM ARE THE TEMPERATURES TODAY AND TONIGHT AS H5 RIDGING WILL BE THE DOMINATE DRIVER OF WEATHER. THE DETERMINISTIC MODELS APPEAR TO BE ON THE LOW SIDE OF GUIDANCE WITH THE STATISTICAL SUITE WARMER.
ANOTHER IN A SERIES OF WEAK COLD FRONTS EXTENDING FROM NORTHERN WI TO SOUTHWEST IA WILL QUICKLY MOVE ACROSS THE AREA THIS MORNING. BUT SHOULD SET UP A RESPECTABLY LARGE GRADIENT ACROSS THE AREA WITH HIGHS IN THE LOW-MID 60S AGAIN FAR SOUTHERN CWA RANGING TO THE LOWER 50S NEAR THE WISCONSIN BORDER. YET ANOTHER WEAK COLD FRONT WILL MOVE ACROSS THE AREA TONIGHT.
TEMPS ACRS THE SERN PLAINS WILL BE A LITTLE COOLER IN THE WAKE OF THAT FRONT.
A BACK DOOR COLD FRONT ON SATURDAY NIGHT WILL COOL HIGH TEMPERATURES FOR SUNDAY ON THE ORDER OF 15 DEGREES ACROSS PLAINS.
309 AM CST SAT FEB 20 2016 A weak cold front will move through the forecast area later this afternoon and this evening and bring an end to our early Spring-like weather. Until then though, it looks like another day in the lower 70s, although today will be much less windy than the previous few days. So temperatures in the lower 70s again seem likely. The flow over the eastern two-thirds of the country becomes mostly zonal with deep ridge over the eastern Pacific and West Coast.
While these readings will be at least a few degrees cooler than yesterday, it should feel nicer outside due to winds being much lighter. 00Z models push a cold front southward toward Peoria at 00Z/6 pm today, to I-70 by 06Z/midnight tonight and through southeast IL during overnight. NNW winds brings cooler highs Sunday ranging from upper 40s ne CWA to lower 50s sw CWA with mid 50s along and south of highway 50 in southeast IL.
NOTHING IS ON RADAR AT PRESENT TIME AND THE COLD FRONT IS BACK NEAR THE BOOTHEEL OF MISSOURI. THE COLD FRONT PROBABLY WILL NOT MAKE IT MUCH FARTHER SOUTHEAST AND EVEN WITH IT BEING ANALYZED. TEMPS WILL FLUCTUATE A BIT IN THE NEXT HOUR OR TWO BUT SHOULD REMAIN FAIRLY STEADY IN THE LOWER TO MID 50S OVERNIGHT.
AN UPPER LEVEL TROUGH WILL MOVE THROUGH THE REGION SATURDAY NIGHT. THE SEMI-PERMANENT LONGWAVE PATTERN FEATURES A TROF OVER THE EASTERN CONUS AND RIDGE OVER THE WESTERN CONUS. GUIDANCE INDICATES A FEW WEAK WAVES WILL TOP THE RIDGE AND DIVE ACROSS THE DAKOTAS THROUGH THE EXTENDED. EXPECT MVFR CEILINGS TO MOVE SOUTHEAST OUT OF ND AND INTO NORTHEAST SD TONIGHT AS AN UPPER LEVEL LOW PRESSURE AREA MOVES EAST. SOME OF THE LOWER CEILINGS MAY GET CLOSE TO MBG TONIGHT.
A COLD FRONT WILL DROP IN FROM THE NORTH TONIGHT WHILE A LOW PRESSURE WAVE PROPAGATES EASTWARD ALONG THE FRONT. MOST OF THE PRECIPITATION SHOULD END BY SUNDAY NIGHT AS THE FRONT EXITS TO THE SOUTH AND THE LOW PRESSURE WAVE DEPARTS OFF THE COAST.
BERMUDA HIGH PRESSURE. ALL OF THIS SHOULD HELP TO KEEP OVERNIGHT LOWS A BIT WARMER OVERNIGHT. DEEP WLY FLOW IN THE WAKE OF THE DEPARTING TROUGH WILL RESULT IN WARM AND DRY CONDITIONS OVER CENTRAL NC. KEEPING THE BOUNDARY LAYER WARMER THAN NORMAL.
WEAK HIGH PRESSURE WILL FILTER DOWN FROM SOUTH CENTRAL CANADA. THIS HIGH WILL HELP TO USHER IN COOLER TEMPERATURES THEN YESTERDAY. EXPECT A LOT OF LOW CLOUDS OVER THE AREA IN THE MODESTLY COOLER AIR. BUT THE COOLER AIR WILL STILL BE FAIRLY WELL MIXED.
A WEAK COLD FRONT HAS DISSIPATED OVER THE SAN FRANCISCO BAY AREA THIS EVENING. EXPECT DRY AND MILD WEATHER OVER THE WEEKEND AS HIGH PRESSURE BEGINS TO BUILD OVER CALIFORNIA.
OTHER MINOR UPDATES INCLUDED SLIGHTLY LOWERING OVERNIGHT LOWS ACROSS CENTRAL OREGON WHERE TEMPERATURES ARE NOW EXPECTED TO DROP INTO THE LOWER TO MID 20S OVERNIGHT. STILL EXPECTED TO REACH THE UPPER 40S AND LOWER 50S IN THE LOWER ELEVATIONS.
HIGH PRESSURE WILL BRING ANOTHER ROUND OF DRY AND UNSEASONABLY WARM CONDITIONS THIS WEEKEND AND INTO THE COMING WEEK. STILL SOME PATCHES OF MID AND HIGH CLOUD IN THE SOUTHERN SKY AS THE RIDGE BEGINS TO REGAIN AMPLITUDE THROUGH THE REGION ONCE AGAIN. THE BROAD BASED LONG PERIOD RIDGE WILL CONTINUE TO BE THE MAIN FACTOR IN OUR WEATHER THROUGH THE COMING WEEK WITH DRY CONDITIONS AND MILD TEMPERATURES.
425 AM EST SAT FEB 20 2016 HIGH PRESSURE OVER THE AREA WILL GIVE DRY CONDITIONS AND CONTINUED UNSEASONABLY WARM TEMPERATURES TODAY. A LOW PRESSURE SYSTEM WILL MOVE THROUGH THE OHIO VALLEY TONIGHT INTO SUNDAY. THIS WILL BRING A CHANCE OF RAIN AND SOME COOLER TEMPERATURES. HIGH PRESSURE NOSING DOWN INTO THE REGION FROM ERN CANADA WILL PROVIDE ANOTHER DAY WITH TEMPERATURES WELL ABOVE NORMAL TEMPERATURE WHICH WILL BE AROUND 20 DEGREES ABOVE NORMAL. HIGHS ARE EXPECTED TO PUSH INTO THE LOWER TO MID 60S. COOLER AIR WILL BEGIN TO SINK IN SUNDAY NIGHT AS HIGH PRESSURE BUILDS IN FROM THE NORTHERN PLAINS.
There is still a low level thermal ridge supporting the continuation of above normal temps today. A cold front will move thru Sunday AM resulting in a change from very warm temperatures of late. As front moves thru there will be a minor shrtwv trof in the mid level flow resulting in a chance for precip. GFS is a little wetter than ECMWF and depending on timing of the front and location of the shrtwv trof the northern CWFA could remain dry or at least have the least PoPs.
This will result in surface lee troughing and low level thermal ridging with near record to record high temperatures across west Texas and southeast New Mexico this afternoon. An upper level trough moving across the Ohio and Mississippi Valley will drag a cold front across the forecast area during the day Sunday. A weak southern stream trough and the right rear quadrant of an upper jet will enhance lift along and near the cold front to produce a slight chance to a chance of showers and thunderstorms across mainly west Texas during the day Sunday.
259 AM MST SAT FEB 20 2016 WESTERLY FLOW ALOFT WILL PREVAIL TODAY AND THEN TURN NORTHWEST TONIGHT AS A TROUGH MOVES ACROSS THE NORTHERN ROCKIES. THE UPPER LEVEL TROUGH MOVES ACROSS MONTANA AND WYOMING WHILE A SURFACE COLD FRONT DROPS SOUTH THROUGH COLORADO THIS EVENING. MAY BE ENOUGH LIFT BEHIND THE FRONT AND FROM THE UPPER LEVEL TROUGH TO PRODUCE A FEW RAIN SHOWERS OVER THE NORTHEAST CORNER OF COLORADO THIS EVENING.
A trough of low pressure will develop along the lee of the Rockies overnight as an area of high pressure at the surface slides east southeast into Oklahoma and eastern Kansas.
WITH TEMPERATURES THIS AFTERNOON SEVERAL DEGREES COOLER THAN ANTICIPATED. THE SLIGHTLY COOLER HIGHS FOR TOMORROW MATCHES THE TREND SEEN WITH CONSENSUS MODEL BLENDS. TEMPERATURES ON SUNDAY SHOULD BE A BIT COOLER.
1253 AM EST SAT FEB 20 2016 HIGH PRESSURE WILL BE OFF THE SOUTHEAST COAST TONIGHT THROUGH SUNDAY. A COLD FRONT WILL MOVE INTO THE AREA SUNDAY NIGHT.
917 PM MST FRI FEB 19 2016 UPPER-LEVEL TROF EXPECTED TO BRING SCATTERED LIGHT RAIN/SNOW ACROSS OUR REGION TONIGHT THROUGH SAT MORNING IS CURRENTLY LOCATED IN THE IDAHO PANHANDLE WITH ITS PRIMARY PRECIPITATION AREA JUST MOVING INTO WESTERN MT. A SMALL POCKET OF MOISTURE AHEAD OF THE TROF IS CURRENTLY GENERATING SOME VERY LIGHT AND SPOTTY SHOWERS EAST OF GREAT FALLS AND INTO CENTRAL CHOUTEAU AND JUDITH BASIN COUNTIES. A PACIFIC COLD FRONT AND UPPER LEVEL DISTURBANCE WILL MOVE THROUGH THE REGION TONIGHT/SATURDAY MORNING. EXPECT GUSTY WEST WINDS TO DEVELOP BEHIND THE COLD FRONT WILL. WHILE SCATTERED RAIN/SNOW SHOWERS DEVELOP AHEAD/ALONG THE COLD FRONT. TEMPERATURES WILL BE A BIT COOLER STARTING ON SATURDAY FOR AFTERNOON HIGHS.
427 AM EST SAT FEB 20 2016 A GUSTY SOUTHERLY FLOW OF MILDER AIR WILL OCCUR TODAY AS LOW PRESSURE TRACKS NORTH OF PENNSYLVANIA.
COOL SHOWERY WEATHER WITH LOWERING SNOW LEVELS WILL PREVAIL TONIGHT IN THE WAKE OF A COLD FRONT. A WEAK UPPER LEVEL RIDGE WILL MOVE INTO THE AREA ON SATURDAY PROVIDING A DRY BREAK IN THE WEATHER FROM LATE SATURDAY AFTERNOON UNTIL SUNDAY MORNING.
304 AM CST SAT FEB 20 2016 06Z SFC DATA HAD A WEAK TROF RUNNING FROM EASTERN MINNESOTA BACK INTO NEBRASKA. THE WEAK TROF WILL SWITCH WINDS AROUND TO THE NORTHWEST WITH ITS PASSAGE ALONG WITH SOME INCREASE IN CLOUDS.
210 AM EST SAT FEB 20 2016 A GUSTY SOUTHERLY FLOW OF MILDER AIR WILL OCCUR TODAY AS LOW PRESSURE TRACKS NORTH OF PENNSYLVANIA.
1054 PM MST FRI FEB 19 2016 SOUTHERLY WINDS UP TO 10 MPH EARLY THIS EVENING WILL SHIFT TO THE NORTHWEST AT SIMILAR SPEEDS AFTER MIDNIGHT AS ANOTHER COLD FRONT MOVES THROUGH. HIGH TEMPERATURES SATURDAY A DEGREE OR TWO COOLER COMPARED TO TODAY WITH LOW TO UPPER 60S.
THE LOW LEVEL FLOW IS A LITTLE WEAKER AROUND THE VICTORIA AREA AND AREAS OF FOG HAVE FORMED IN THIS REGION. SATELLITE SHOWS MID AND HIGH LEVEL MOISTURE FROM WEST OF BAJA CALIFORNIA INTO NORTHWEST MEXICO THAT WILL MOVE INTO THE AREA TONIGHT AND REMAIN OVER SOUTH TEXAS ON SUNDAY AS AN UPPER LEVEL SHORT WAVE TROUGH MOVES INTO NORTHWEST MEXICO.
A DEWPOINT GRADIENT BECOMES OBVIOUS WITH UPPER 40S AND SE SFC WINDS NOTED ACROSS THE LOW ROLLING PLAINS AND MID TO UPPER 20S WITH SWRLY SFC WINDS NOTED ACROSS THE WRN SOUTH PLAINS. CONCERNS WILL ARISE ONCE AGAIN FOR THE LOW CLOUDS AND/OR FOG TO SPREAD NWWRD THROUGHOUT THE MORNING AND PERHAPS COME CLOSE TO OUR DOORSTEP /PER THE HRRR/ OR DRIFT IN ACROSS THE FAR SRN ZONES AOA DAYBREAK /PER THE NAM/. CERTAINLY MUCH COOLER AIR ASSOCIATED WITH THIS FRONT THAN WHAT HAS BEEN IN RESIDENCE ACROSS THE SRN PLAINS THE BETTER PART OF THE LAST WEEK. BUT TEMPS STILL SHOULD RUN ABOUT FIVE DEGREES WARMER THAN NORMAL.
THE LATEST SFC ANALYSIS WAS INDICATING DEEP 986 MB CYCLONE ROLLING EAST ACROSS THE CENTRAL U. TRANSITION TO A MORE NORTHWESTERLY FLOW ALOFT WILL BEGIN TO PUSH HIGH PRESSURE SE INTO THE AREA FROM THE NORTHERN PLAINS.
449 AM EST SAT FEB 20 2016 A FEW SPRINKLES WERE DETECTED NEAR THE LOWER AND MIDDLE KEYS BEFORE MIDNIGHT. THIS HIGH WILL SHIFT MORE EASTWARD TOWARDS THE MID ATLANTIC.
AFTER VIGOROUS TROUGHS THE PAST COUPLE DAYS. UPPER LEVEL RIDGING WILL APPROACH FROM THE WEST THIS AFTERNOON AS A RIDGE AXIS MOVES TO THE COAST.
WITH LOW PRESSURE CROSSING THE LOWER OHIO VALLEY. MAY SEE A BRIEF CHANGE OVER TO SNOW IN THE HIGHER ELEVATIONS.
Warm front will continue to slowly lift north across northeast OK overnight with moist low level airmass potentially resulting in period of dense fog at BVO. Warm front continues to slowly push northward through NE OK with a marked increase in low level moisture.
140 AM CST SAT FEB 20 2016 SURFACE PRESSURE GRADIENT HAS RELAXED CONSIDERABLY AS HIGH PRESSURE RETREATS TO THE SOUTHEAST AND A WEAK BOUNDARY APPROACHES FROM THE NORTH. EXPECT TEMPERATURES TO COOL BY SEVERAL DEGREES FOLLOWING FRONTAL PASSAGE, BUT READINGS SHOULD REMAIN ABOVE FREEZING.
/ISSUED 934 PM CST FRI FEB 19 2016/ ONSHORE WINDS WILL CONTINUE AS HIGH PRESSURE NEAR THE MID ATLANTIC COAST EXTENDS INTO SE TEXAS.
HIGH PRESSURE IS MOVING INTO THE ATLANTIC THIS AFTERNOON WHILE LOW PRESSURE DEVELOPS OVER THE CENTRAL PLAINS. WITH THE INCREASE IN MOISTURE AND THE AMPLE SUNSHINE THIS MORNING A CU FIELD HAS DEVELOPED AWAY FROM THE COOLER GULF WATERS. THROUGH SATURDAY AND SUNDAY MOISTURE WILL CONTINUE TO INCREASE, HOWEVER ENOUGH RIDGING WILL REMAIN IN PLACE THROUGH THE MID AND UPPER LVLS TO KEEP THE AREA CAPPED SATURDAY BUT WEAKENING OF THE RIDGE WILL OCCUR DURING SUNDAY.
THERE MAY BE A FEW SHOWERS THIS EVENING AFTER THE COLD FRONT COMES THROUGH. THE HIGH WINDS THIS AFTERNOON AND EVENING HAVE LED TO NUMEROUS POWER OUTAGES. WE HAD HAVE WIND GUSTS TO AROUND 60 MPH BUT I EXPECT WIND SPEEDS TO DECREASE AS THE COLD FRONT MOVES THROUGH THE AREA IN THE NEXT FEW HOURS.
1100 PM MST FRI FEB 19 2016 UPDATED AVIATION SECTION UPPER-LEVEL TROF EXPECTED TO BRING SCATTERED LIGHT RAIN/SNOW ACROSS OUR REGION TONIGHT THROUGH SAT MORNING IS CURRENTLY LOCATED IN THE IDAHO PANHANDLE WITH ITS PRIMARY PRECIPITATION AREA JUST MOVING INTO WESTERN MT. A SMALL POCKET OF MOISTURE AHEAD OF THE TROF IS CURRENTLY GENERATING SOME VERY LIGHT AND SPOTTY SHOWERS EAST OF GREAT FALLS AND INTO CENTRAL CHOUTEAU AND JUDITH BASIN COUNTIES. TEMPERATURES WILL BE A BIT COOLER STARTING ON SATURDAY FOR AFTERNOON HIGHS.
passing trough the recovering/building ridge. JHM Weekend looks dry with temperatures warming under the west coast ridge.
ESPECIALLY OVER THE HIGHER TERRAIN. A COLD FRONT WILL PROVIDE THE CHANCE FOR A FEW SPRINKLES OR MOUNTAIN SNOW SHOWERS SUNDAY. WELL DEFINED CLOSED LOW DEPICTED ON SATELLITE WILL CONTINUE TO TRACK EASTWARD FROM SOUTHER ONTARIO- QUEBEC BORDER THIS MORNING, REACHING THE ST LAWRENCE DELTA LATE TONIGHT/EARLY SUNDAY MORNING. THIS LOW WILL CONTINUE TO PRODUCE SHOWERS THIS MORNING WITH DRY SLOT ENCROACHING UPON THE REGION DURING THE LATE MORNING/EARLY AFTERNOON HOURS. BROAD UPPER TROUGH WILL EXIST OVER EASTERN CANADA AND THE NORTHEAST UNITED STATES BEGINNING SUNDAY.
AS THIS LOW APPROACHES. LOW LEVEL ISENTROPIC LIFT WILL INCREASE TO THE EAST OF THE LOW. THIS WILL CAUSE A WARM FRONT TO LIFT NORTH INTO SE KS FOR THE MORNING HOURS. AS THE LOW LAYERS SATURATE. NOT TOO JAZZED ABOUT PRECIP CHANCES WITH THIS LOW. BUT WILL LEAVE THE LOW POPS IN FOR THE DAYTIME ON SAT FOR EXTREME SE KS. AND IS EXPECTED TO LIFT NORTHWARD LATER TONIGHT AS A WARM FRONT IN RESPONSE TO APPROACHING WEAK UPPER LEVEL WAVE. COOLER AIR WILL SPREAD SOUTHWARD INTO KANSAS ON SUNDAY BUT TEMPERATURES WILL STILL BE ABOVE NORMAL.
LOW PRESSURE WILL CONTINUE TO PULL AWAY FROM THE REGION TONIGHT WITH WINDS DIMINISHING AND CLEAR OR MOSTLY CLEAR SKIES. A WEAK FRONT MOVING INTO THE AREA SATURDAY NIGHT WILL BRING COOLER TEMPS TO THE AREA FOR SUNDAY WITH HIGHS IN THE 40S AND 50S.
437 AM EST SAT FEB 20 2016 HIGH PRESSURE ALONG THE SOUTHEAST COAST WILL BE SUPPRESSED SOUTHWARD AS A COLD FRONT MOVES INTO THE AREA SUNDAY NIGHT.
WINDS WILL RELAX LATER THIS AFTERNOON AND EVENING AS THE UPPER LEVEL LOW RESPONSIBLE FOR THE STRONG WINDS LAST NIGHT CONTINUES TO QUICKLY PUSH NORTH AND EAST. WEAK MID-LEVEL CAA IN THE NORTHWEST FLOW WILL DO LITTLE TO PREVENT ANOTHER WARM DAY ACROSS THE AREA AS DIURNAL BOUNDARY LAYER MIXING PUSHES SURFACE TEMPERATURES INTO THE LOW TO MID 60S. HOWEVER VERY DRY AIR IN THE LOWEST 10KFT OF THE TROPOSPHERE SHOULD LIMIT ANY PRECIP CHANCES THROUGH 00Z SUNDAY.
1257 AM EST SAT FEB 20 2016 HIGH PRESSURE WILL BUILD INTO THE AREA LATER TONIGHT AND INTO THE DAY ON SATURDAY. A LOW PRESSURE SYSTEM WILL MOVE THROUGH THE OHIO VALLEY SATURDAY NIGHT INTO SUNDAY. THIS WILL BRING A CHANCE OF RAIN AND SOME COOLER TEMPERATURES. WITH MOSTLY CLOUDY SKIES PERSISTING IN THE SOUTH NEAR A DISSOLVING COLD FRONT WHILE SKIES HAVE BECOME MAINLY CLEAR IN NORTHERN COUNTIES WHERE A DRY SLOT IS EVIDENT ON SATELLITE. WEAK HIGH PRESSURE WILL BRIEFLY BUILD INTO THE AREA FOR SATURDAY. UNSEASONABLY WARM TEMPERATURES WILL CONTINUE WITH HIGHS GENERALLY IN THE LOW TO MID 60S.
Weak high pressure is over Florida today with a stationary boundary to the north of the region.
THIS STRATUS DECK SHOULD PRODUCE COOLER TEMPERATURES IN NORTHEASTERN SOUTH DAKOTA THAN PREVIOUSLY EXPECTED. AN AREA OF HIGH PRESSURE WILL DROP SOUTHWARD INTO THE REGION ON SUNDAY AFTERNOON THROUGH SUNDAY NIGHT. THESE COLD TEMPS WOULD NORMAL PRODUCE HIGHS IN THE LOW 20S. TO THE LOWS 40S.
A BROAD AREA OF RIDGING IN THE MID/UPPER LEVELS CONTINUES TO EXTEND FROM CENTRAL MEXICO EASTWARD THROUGH THE GULF OF MEXICO AND OVER THE FLORIDA PENINSULA. THIS PERSISTENT RIDGING IS HELPING TO KEEP A ZONAL JET FLOW OVER THE MID LATITUDES OF THE CONUS. A LOW PRESSURE SYSTEM AND ASSOCIATED FRONTAL BOUNDARY NEAR OKLAHOMA WILL MOVE EASTWARD OVER THE NEXT COUPLE OF DAYS. THIS SYSTEM IS NOT EXPECTED TO AFFECT OUR WEATHER AS HIGH PRESSURE RIDGING WILL CONTINUE OVER THE STATE.
TONIGHT AND SATURDAY THE LATEST RAP ANALYSIS AND SATELLITE/RADAR IMAGERY SHOW AN AREA OF LOW PRESSURE OVER NORTH-CENTRAL WI EARLY THIS AFTERNOON. A BAND OF PRECIPITATION ON THE NORTHERN FLANK OF THE LOW STARTED OUT AS A RAIN/SLEET MIX OVER NORTHERN WI LATE THIS MORNING. SOUTH OF THE LOW. EASTERN WI IS MORE PRONE TO THE HIGHER GUSTS SO WILL LET THE ADVISORY RIDE FOR THIS AREA. LOW PRESSURE WILL BE MOVING NORTHEAST AWAY FROM THE REGION. TEMPS WILL REMAIN WARM WITH READINGS IN THE LOW TO MID 30S.
SFC PRESSURE NEARED 986 MB AT THE CENTER OF THE LOW. BEHIND THE LOW. H850 TEMPERATURES WILL STILL REACH LEVELS THAT SHOULD BRING HIGHS INTO THE 40S NORTH TO THE LOWER 60S IN THE SOUTH. BY SUNDAY ANOTHER COLD FRONT WILL APPROACH THE REGION FROM THE NORTHERN PLAINS BRINGING A SMALL CHANCE OF LIGHT FREEZING RAIN OR LIGHT SNOW/RAIN MIXED OVER THE FAR NORTH.
WITH SLIGHTLY COOLER TEMPERATURES SUNDAY WITH THE INFLUENCE OF THE CLOUDS AND SHOWER ACTIVITY.
88 THE EFFECTS OF A HIGH PRESSURE RIDGE WILL BE FELT FOR ONE MORE DAY ACROSS CENTRAL ALABAMA WITH ONLY ISOLATED SHOWERS EXPECTED FOR SATURDAY. THE RIDGE IS EXPECTED TO WEAKEN AND CONTINUE TO THE EAST WITH WETTING RAIN CHANCES RETURNING BY SUNDAY.
MORE WEAK RETURN WERE MOVING INTO NORTH CENTRAL ND WITH COLD FRONT. COLD FRONT SHOULD MOVE INTO GFK AROUND 12Z SAT. WATER VAPOR LOOP INDICATED AN UPPER LOW OVER SOUTHEAST ND AND WAS MOVING SOUTHEAST 35-40 KNOTS. SURFACE WINDS HAVE INCREASED WITH PASSAGE OF UPPER LOW. COLD FRONT TO MOVE IN LATER TONIGHT AND SO WILL ADD VERY LIGHT SNOW IN THE NORTH LATER TONIGHT. A WEAK RIBBON OF HIGH PRESSURE SETTLES INTO THE AREA ON SAT. HIGH TEMPS SHOULD BE NOTICEABLY COOLER BUT STILL NOT TOO FAR OFF AVERAGE HIGHS.