Aikyam-Lab/Synoptic-Bench huggingface dataset:
241 PM PDT SAT SEP 10 2016 Changes begin Sunday as an upper low moves into the Pacific Northwest.
457 PM EDT SAT SEP 10 2016 High pressure in the forecast area will weaken ahead of an approaching cold front.
225 PM CDT SAT SEP 10 2016 The cold front is quickly moving across eastern portions of the PAH forecast area this afternoon. The cold front and associated convection will clear our region by 00z. Drier air will filter in behind the front with models quickly building high pressure into middle Mississippi River valley.
SHORT TERM (Tonight through Sunday Night): Water vapor imagery shows an upper level low over the upper Texas coast this afternoon. A mid level height center over the Southeast United States is supporting high pressure over the northern Gulf Coast. A short wave trough is currently digging into the southern plains with a cold front draped across central Texas. The weak cold front is expected to stall just north of the CWA.
The analysis at 2 PM shows generally partly sunny skies across the upper midwest with northwest winds ushering in cooler and drier air.
High pressure ridge will build from the Northeast to East of the region Tonight into Sunday, with a weak trough to the Northwest. With the high to the East tomorrow, expect the East coast sea breeze to push further inland, with most convection focused near the coast late morning.
1233 PM CDT SAT SEP 10 2016 Cold front extending from northern IN southwest to just northwest of STL to just southeast of SGF will continue moving southeastward through the rest of the forecast area this morning as the upper level trough over the northern Plains moves eastward into the Great Lakes region. Despite a clearing sky later this morning and afternoon, high temperatures will be cooler than yesterday due to the low level cold air advection behind the cold front.
A progressive trough moving to the SE was a big feature over the central and eastern CONUS, with convection forming in the vicinity of a cold front that extended from the central Great Lakes, eastern Arkansas and Texas Hill Country. Mid afternoon temperatures under partly sunny skies have risen into the low/mid 90s with 5-15 mph SW winds. In the wake of the frontal passage tonight, dry weather with slightly drier and cooler high temperatures (about 5 degrees cooler than today) will start a new week. Notably cooler conditions are forecast for Sunday night, with lows ranging from the upper 50s in portions of NE Alabama and Southern Middle Tennessee to the lower 60s elsewhere.
/issued 435 AM CDT SAT SEP 10 2016/ Brisk cold front exited our CWA shortly after 3 AM ahead of sustained northeast winds measured as high as 39 mph in Friona.
231 PM CDT SAT SEP 10 2016 Canadian high pressure is building into the area from the north this afternoon, bringing with it a shot of much cooler and drier air. Dewpoints have fallen into the 50s for most early this afternoon, with afternoon temperatures only reaching the low 70s. Temperatures tonight should fall into the low 50s, with a few of the cooler spots across the eastern Ozarks touching the upper 40s. With an upper level high over Baja California.
The upper trough will advance into the Great Lakes Region and Ohio Valley, while fairly zonal flow resides across the central and western U. Skies will remain clear, with a thermal ridge developing across the Central High Plains. Lows tonight once again on the cool side from the low 40s parts of Sheridan and Garden county, mid 40s southwest, to the lower 50s east.
Cool cyclonic flow to the west of the main trough axis, combined with mid-September sunshine, has generated a healthy Cu field across much of my forecast area. The southerly breezes will usher in warmer temperatures with highs in the middle 60s near Grand Marais to the low to middle 70s elsewhere.
530 PM EDT Sat Sep 10 2016 Showers and thunderstorms are likely ahead of a cold front passage tonight. Line of thunderstorms associated with a cold front will approach the region this evening. Cooling temperatures aloft remain back with the primary 500mb trough and mid-level lapse rates are not very steep so hail does not look to be an issue. Have left the PoPs as is, and actually held onto chance values a bit longer based on the latest hi res model guidance as the upper trough pivots over the Great Lakes. A refreshing air mass change is expected for this period behind the boundary with high pressure in command.
307 PM CDT SAT SEP 10 2016 The analysis at 2 PM shows generally partly sunny skies across the upper midwest with northwest winds ushering in cooler and drier air.
400 PM EDT Sat Sep 10 2016 Main focus through this evening will continue to revolve around severe storm chances as a cold front moves across the region. Presently, the cold front is moving into Louisville. By tomorrow, high pressure builds in behind the exiting front, with sunny skies returning. Cooler weather will prevail with highs in the 70s, making for a very pleasant end to the weekend. The drier airmass will allow for a cooler night Sunday night as lows settle well into the 50s.
304 PM MDT SAT SEP 10 2016 except for a few clouds over the highest terrain. with temps generally in the 70s across th plains and valleys and 50s and 60s across the higher terrain. Scattered high based thunder will be likely over the higher terrain by later in the afternoon. It will be warmer tomorrow than today. Enjoy the warm weather tomorrow as it will likely be cooler for the rest of the upcoming week.
Temps rebound Sunday back toward seasonal norms with most locations right around the mid 80s as southwest surface winds become breezy in response to lee troughing to our north.
Low pressure over Lake Superior will move off to the northeast while hi pressure settles in across the Midwest overnight. Sunday will feature mostly clear skies and winds from the south, gusting in the afternoon as a cold front and associated low pressure area makes its way across North Dakota Sunday.
619 PM EDT SAT SEP 10 2016 A cold front will push through the area this evening. High pressure and dry conditions with more comfortable temperatures will build in for the early part of the week.
An open trough axis will continue to pull away from the north central CONUS with a general zonal pattern in its wake for the rest of the weekend. This synoptic scale pattern will lead to a deepening leeside trough across eastern Colorado. The rising heights and downslope momentum will result in a much warmer lower troposphere and this will be seen in the surface temperatures as well.
Overnight lows in and near the foothills will be noticeably warmer as a weak mountain wave develops late tonight into Sunday morning.
241 PM EDT SAT SEP 10 2016 High pressure in the forecast area will weaken ahead of an approaching cold front.
306 PM CDT SAT SEP 10 2016 High pressure in firm control tonight, then advancing cold front starts to impact the weather. However, impacts first 24 hours will be increasing southerly winds and warmer temps.
332 PM EDT Sat Sep 10 2016 Main focus through this evening will continue to revolve around severe storm chances as a cold front moves across the region. Presently, the cold front is moving into Louisville. By tomorrow, high pressure builds in behind the exiting front, with sunny skies returning. Cooler weather will prevail with highs in the 70s, making for a very pleasant end to the weekend. The drier airmass will allow for a cooler night Sunday night as lows settle well into the 50s.
At the surface, high pressure centered over the southern plains today will be replaced by a trough of low pressure over eastern Colorado on Sunday. In the upper levels, southwest flow will continue for most of the period as a close upper level low forms over northern California and the CWA lays under the backside of an upper level ridge. By mid-week this low will kick out of that region and move toward the northeast and be located over the Northern Plains by the end of the week.
307 PM EDT SAT SEP 10 2016 The first of 2 shots of cooler and less humid air will move into the region this evening. Scattered showers will persist until a cold front passes, especially east of Interstate 69.
it looks like the cold front is still north of the CWFA this afternoon (generally along a Lampasas/Temple/Palestine line). But we are seeing some light north winds/slightly lower dewpoints over the northern counties (in the wake of the earlier prefrontal trof) at this time. with the highest chances closer to the coast (where lingering moisture and the weak upper low is parked). A building upper ridge to the east for the mid/end of the week timeframe will help to strengthen and deepen the onshore flow over the area.
Line of showers and storms continue to progress farther south racing toward South Texas ahead of a cold front expected to approach VCT within the next hour or two. As of writing, the cold front is pushing through the northern Hill Country progressing nicely south following a timing blend of the NAM/ECMWF with the help of a N-S oriented jet streak.
High pressure ridging and strong downsloping has resulted in temperatures warming into the 70s to lower 80s across the forecast area. A strong cold front moves across the forecast area Sunday.
With afternoon dew points mixed out to the upper 40s-lower 50s, this seems like a good target for lows tonight, with warmer readings confined to elevated areas of south central South Dakota and southwest Minnesota, which will see some influence from developing 35-45kt low level jet.
High pressure will remain in control tonight. An upstream trough digging into LA/MS will support a surface cold front into south AL and central GA. All in all, a quiet night is in store with lows in the lower to middle 70s.
Sunday will be mostly sunny, dry and mild with weak ridging aloft and light northerly flow through a deep layer of the atmosphere.
The cold front over the Mississippi Valley will continue to move east and will enter extreme north GA late tonight and stall across north GA somewhere along a Carrollton/Atlanta/Athens line.
159 PM CDT SAT SEP 10 2016 Late summer/early fall cold front is currently working its way through the southeastern states. Interestingly, the talk with the weak cold front is on temperatures and dewpoints. A cold front was located just west of the Mississippi River and will slowly move over central Alabama tonight. 75 Isolated to scattered rain chances continue through the weekend as a weak cold front drops into the area.
A weak upper level ridge will give way today as a weak frontal boundary moves across southwest Washington and northwest Oregon later tonight and Sunday morning.
Tonight and Sunday The latest RAP analysis and satellite/radar imagery show broad low pressure and an associated cold front moving east over Michigan early this afternoon. The band of showers behind the front has exited to the east, but additional shower activity and isolated thunderstorms have developed beneath a cold upper trough that is moving across the region. Otherwise, should see clearing skies take place as high pressure drifts into the region. High pressure will quickly advance across the region during the morning hours. High temps ranging from the low to mid 70s.
233 PM EDT SAT SEP 10 2016 A cold front passes through tonight. Cooler and drier air on tap for the rest of the weekend. High pressure to start the week.
500 mb flow will initially be from the northwest but will flatten out and become more zonal across the central Plains Saturday night into Sunday as a trough digs from northern Manitoba southwestward into the Pacific Northwest. Surface pattern showed Cool high pressure over WY that extended eastward into the central Plains. High pressure at the surface will build east/southeast over the region today.
322 PM CDT SAT SEP 10 2016 Light northwesterly flow upstream of the main upper level trough axis across the midwest will continue to bring tranquil weather across the Panhandles.
along the weak cold front and line of agitated cu over these areas. The short term progs are now depicting even cooler temps than earlier runs tonight through Sunday night.
351 PM PDT SAT SEP 10 2016 An offshore high pressure ridge will maintain dry conditions across the region and above normal temperatures across interior areas through Sunday.
This system will usher in some cooler temperatures as well as gusty winds as we head into the workweek.
322 PM EDT SAT SEP 10 2016 A cold front with strong to severe thunderstorms will sweep across the area this afternoon. High pressure and dry conditions with more comfortable temperatures will build in for the early part of the week.
is weakening in response to a low pressure moving out of the Northern Plains, toward Quebec, and dragging a front along with it across the Plains toward the Mid Mississippi River Valley and extending back into Texas. In the upper levels, we have a decaying upper ridge across the Southeast U. So, some progress with the surface front is possible today but with less upper support suggested by the flattening trough, it should stall across Central Alabama before pushing all the way through.
334 PM CDT SAT SEP 10 2016 (Tonight and Sunday) A cold front has cleared all of West Central Texas this afternoon, with a few lingering post frontal showers and thunderstorms continuing, mainly across Crockett County. Overnight lows will drop into the low to mid 60s for most locations.
556 PM CDT SAT SEP 10 2016 The cold front has pushed south through all the terminals early this evening.
An upper level low east of the Georgia coast continues to extend southward into the Florida Straits. The global model consensus regarding the area of low pressure southwest of the Florida Keys is for gradual movement to the west southwest into the central Gulf over the next couple of days. The aforementioned upper level low could gradually weaken the remainder of the weekend with a weak upper level ridge over South Florida later on Sunday.
High pressure building into the Southern Plains behind a cold front will result in VFR conditions at all sites through the period with mainly sct-bkn high clouds gradually becoming clear by this evening. /Issued 1126 AM CDT SAT SEP 10 2016/ Latest surface analysis indicates the cold front extends from sern MO across far sern OK into nern TX. Pressure gradient associated with building high pressure supports 20-25 mph northerly gusts this afternoon.
118 PM CDT SAT SEP 10 2016 The short term concerns remain timing of upper trough and associated showers over eastern cwa today. Water vapor imagery showing upper trough moving through central MN this morning. High pressure ridge drops southeast over the area during the night with some pressure gradient developing on the backside of the high into the west late. with coolest reading found into west central WI closer to the ridge axis and light winds.
An upper level low pressure trof will be moving over the West Coast by late afternoon and upper level winds are strengthening ahead of this system. An upper level low pressure trof has moved over the West Coast. Upper level winds ahead of this trof have strengthened over Central and Southwest Montana. A cold front will cross the Canadian Border around 12z Sunday and bring rain and gusty north winds across the region.
310 PM CDT SAT SEP 10 2016 with the high centered near the TX panhandle. The ridge of high pressure has provided fair skies across the area today. The low level warm front will push through the area late tonight. setting the stage for a warmer-than-normal Sunday ahead of a cold front approaching from the northwest late in the day. With normals running in the low 70s at GFK and FAR.
Issued by National Weather Service SAN ANGELO TX 329 PM CDT SAT SEP 10 2016 Cold front has pushed southward out of the forecast area today. with scattered showers and thunderstorms lingering this evening across the Lower Trans-Pecos and Big Bend Region.
An upper trof will swing out of British Columbia tonight and begin to split as it moves across Montana. By midweek a cut off low will be in place over the Great Basin while the northern portion of the trof moves through central Canada. Cold front crosses the state from the north on Sunday morning with moisture and cold air filtering south later in the day.
211 PM CDT SAT SEP 10 2016 The passage of a cold frontal boundary last night has left the area under high pressure with mostly clear skies, a nice dry NW breeze, and highs in the low to mid 70s. This nice trend will continue into Sunday with the temperatures rising slightly into the upper 70s as warm air advection returns on the backside of the high pressure.
309 PM CDT SAT SEP 10 2016 Nice fall preview this afternoon with mild/dry conditions behind cold front that has pushed well south of the area.
1258 PM CDT SAT SEP 10 2016 For the 18Z TAFs, benign weather is expected through late Sunday morning as high pressure at the surface moves across the area. As this high pressure moves east of the region, surface winds will become south to southwest and gusty by mid to late Sunday morning. /Issued 356 AM CDT SAT SEP 10 2016/ Cold front has cleared the Texas and Oklahoma Panhandles with drier air moving in this morning. Much cooler conditions expected today with highs in the mid- to upper-80s.
1218 PM CDT SAT SEP 10 2016 Fairly straight forward forecast today as high pressure remains centered across the Central Plains. With dry atmosphere and good mixing conditions, have sided closer towards warmer guidance, but with 0 standard deviation did not stray far from consensus. Tonight will see southerly winds increase as high pressure slides to the east. Lows will have a strong elevation component, and kept places that are more exposed along the Buffalo Ridge more mild. Sunday will be a warm and windy day day as weak upper level ridging builds into the area and a strong southerly surface pressure gradient develops.
Better moisture will be in place by Sunday afternoon leading to scattered showers and thunderstorms with bulk of activity over the higher elevations.
Warm advection continues Sunday with thermal ridge axis over the fa during the afternoon. This will be short lived as strong cold front drops through the fa Sunday night.
618 PM EDT SAT SEP 10 2016 High pressure in the forecast area will weaken ahead of an approaching cold front.
AN UPPER LEVEL DISTURBANCE WILL AFFECT NORTHERN UTAH TODAY WHILE A COLD FRONT REMAINS STALLED ACROSS THE SOUTH. HIGH PRESSURE ALOFT WILL BUILD ACROSS THE REGION FOR THE MIDDLE TO LATTER PORTION OF THE WEEK BRINGING A WARMING AND DRYING TREND.
337 AM CDT TUE MAY 10 2016 Scattered showers starting to shift east of the region this morning in association with departing upper low. Broad upper trough will slowly begin to shift east into the central plains on Wednesday. Cold front is expected to push into northeast Oklahoma by late afternoon with thunderstorms developing along front by late afternoon. Although deep layer shear in association with upper trough will remain relatively weak, MLCAPES on the order of 2000-3000 j/kg will support a damaging wind/large hail threat as multicell thunderstorms/clusters move across much of eastern Oklahoma and northwest Arkansas through the evening hours.
105 AM EDT TUE MAY 10 2016 A WARM FRONT WILL BRING SHOWERS AND POSSIBLY A FEW THUNDERSTORMS TO THE AREA TODAY. WARMER AND DRIER CONDITIONS ARE THEN EXPECTED ON WEDNESDAY IN BETWEEN SYSTEMS WITH HIGHS INTO THE 70S.
408 AM MDT TUE MAY 10 2016 A COLD FRONT MOVES THROUGH THE FORECAST AREA TODAY AS A SHORT WAVE TROUGH ALOFT SWEEPS THROUGH THE CENTRAL HIGH PLAINS AS IT ROTATES AROUND THE UPPER LOW MOVING OVER EASTERN MONTANA. TEMPERATURES WEDNESDAY WILL BE ABOUT 10 DEGREES COOLER THAN TUESDAY. BUT WILL STILL BE NEAR NORMAL OR ONLY SLIGHTLY COOLER FOR THIS TIME OF YEAR. ISOLATED TO SCATTERED THUNDERSTORMS MAY MOVE OUT OF EASTERN COLORADO AND ACROSS THE SOUTHWESTERN PORTION OF THE FORECAST AREA LATE WEDNESDAY INTO WEDNESDAY NIGHT AS THE MAIN TROUGH AXIS EXTENDING SOUTH FROM THE LOW OVER SOUTHERN CANADA SWEEPS EAST OF THE ROCKIES AND ACROSS THE CENTRAL HIGH PLAINS.
PLEASANT SPRING DAY WITH TEMPS IN THE LOWER 70S ACROSS THE PLAINS. WHICH WOULD SUPPORT HIGHS IN THE LOWER 80S ACROSS THE PLAINS TOMORROW. THIS MAY LIMIT THE HIGH TEMPS TOMORROW. ON WED AN UPR TROF AND A COUPLE DISTURBANCE MOVE ACRS THE STATE AND IN THE AFTERNOON HOURS CHANCES FOR PCPN LOOK FAIRLY GOOD FROM THE I- 25 CORRIDOR AND WESTWARD. THU AN UPR RIDGE WL BUILD OVR THE WRN STATES AND THE FORECAST AREA LOOKS DRY ALONG WITH WARMER TEMPS. THE UPR RIDGE BREAKS DOWN BY SAT NIGHT AS A NEW SYSTEM MOVES FROM THE PACIFIC NW AND INTO THE NRN ROCKIES. A COLD FRONT WILL MOVE ACROSS THE REGION LATE TOMORROW AFTERNOON.
WITH STRONG UPPER LEVEL WAVE/TROUGH OVER THE NORTHERN ROCKIES ACTING AS KICKER SYSTEM.
137 AM EDT TUE MAY 10 2016 GENERALLY DRY WEATHER WILL CONTINUE THROUGH MID WEEK, AS A LARGE HIGH PRESSURE SYSTEM REMAINS IN CONTROL.
The upper pattern this morning is characterized by a large UA trough over the northern Rockies with weak SW mid level flow across our area. Thermal ridging across SE NM and much of W TX this afternoon will allow temperatures to soar well into the 90s to near 100 in a few locations. Will need to monitor this through the day today as some of the storms may sneak into the Lower Trans Pecos before moving east of the area.
EARLY MORNING WATER VAPOR IMAGERY SHOWS AN UPPER LEVEL TROUGH LIFTING NORTHEASTWARD FROM THE CENTRAL PLAINS TOWARD THE UPPER MIDWESTERN STATES. WHILE AN UPPER LEVEL RIDGE OF HIGH PRESSURE STRETCHED FROM THE SOUTHEASTERN GULF OF MEXICO THROUGH THE FL PENINSULA AND ADJACENT WESTERN ATLANTIC. AND NEAR 80 TO THE LOWER 80S NEAR THE IMMEDIATE COAST AND BEACHES. LOWS TONIGHT WILL AVERAGE IN THE LOWER TO MID 60S INLAND.
CONVECTIVE TEMPERATURES TODAY ACCORDING TO THE SOUNDINGS WILL BE AROUND 89-90 DEGREES AND WE SHOULD BE WARMER THAN THAT. SOME OF THE HIGH-RES GUIDANCE IS SHOWING THE POTENTIAL FOR STRONG CELLS WEST OF THE RIO GRANDE MOVING EAST INTO THE CWA BY LATE AFTERNOON AS WELL. SHEAR VALUES NEAR 30 TO 40 KNOTS WILL SUPPORT SOME MESOCYCLONES WHICH COULD HELP PROLONG THE LIFE OF STORMS AND ENHANCE HAIL PRODUCTION.
416 AM CDT TUE MAY 10 2016 UPPER FLOW ACROSS THE PANHANDLES TODAY TRANSITIONS FROM ZONAL TO SOUTHWESTERLY AS A NORTHERN STREAM CLOSED UPPER LOW AND TROUGH EJECT EASTWARD OUT OF THE NORTHERN AND CENTRAL ROCKIES.
LOOK FOR GENERALLY PARTLY CLOUDY SKIES WITH LOWS IN THE LOW/MID 60S ONCE AGAIN.
419 AM CDT TUE MAY 10 2016 EARLY MORNING SFC ANALYSIS SHOWS HIGH PRESSURE CENTERED EAST OF THE FL PANHANDLE MAINTAINING A SRLY LOW-LEVEL FLOW OVER THE FORECAST AREA. WHILE LOW PRESSURE LINGERS OVER THE PLAINS STATES.
359 AM EDT TUE MAY 10 2016 HIGH PRESSURE OVER ONTARIO WILL REMAIN STRONG ENOUGH INTO THE EVENING TO KEEP A WARM FRONT NEAR THE OHIO RIVER VALLEY.
352 AM EDT TUE MAY 10 2016 HIGH PRESSURE WILL PREVAIL THROUGH WEDNESDAY.
ANOTHER LOW PRESSURE SYSTEM WILL BRING SOME UNSETTLED WEATHER FOR THE WEEKEND.
UPPER AND SURFACE RIDGING WILL PREVAIL ON WEDNESDAY AND WITH PWATS FALLING BELOW AN INCH.
STORM MOTION HAS BEEN QUITE A BIT FASTER WITH THESE CELLS AS THE MAIN UPPER LEVEL LOW.
332 AM EDT TUE MAY 10 2016 ATLANTIC HIGH PRESSURE CONTINUES OVER THE REGION THIS MORNING, PROVIDING EASTERLY FLOW ACROSS THE FORECAST AREA.
AXIS OF ATLC HIGH PRES RIDGE NOW LIES ACROSS SRN GA. SFC LEVEL RIDGE AXIS REMAINS NORTH OF CTRL FL TODAY WITH MID LEVEL RIDGE AXIS ACROSS THE SRN HALF OF FL. AND HAVE IGNORED THEIR OUTPUT IN FAVOR OF THE LOWER MOS GUIDANCE NUMBERS. AXIS OF ELONGATED MID LEVEL SHORT WAVE TROUGH OVER THE EASTERN CONUS WILL SLIDE EAST AND SHOULD PASS EAST OF FLORIDA ON SAT.
A 95KT JET IS EXPECTED TO ROUND THE BASE OF THE NORTHER ROCKIES UPPER LOW. THIS WILL SEND A PSEUDO-COLD FRONT/DRY LINE ACROSS SOUTH DAKOTA TODAY. WHICH IS THE HIGH WATER MARK FOR MOST SOLUTIONS. HOWEVER A 500MB TROF ROUNDING THE BASE OF THE UPPER LOW WILL PROVIDE SOME SUPPORT FOR MOISTURE TO LIFT INTO THE FAR EASTERN CWA DESPITE THE FRONT STALLING JUST EAST OF THE CWA.
349 AM MDT TUE MAY 10 2016 IR IMAGERY SHOWS THE SHOWER ACTIVITY SHIFTING SOUTHWARD INTO NORTHERN COLORADO AS THE UPPER TROUGH AXIS MOVING INTO WESTERN WYOMING. THE UPPER TROUGH PUSHES INTO THE NORTHERN PLAINS BY WEDNESDAY WITH DRY NORTHWESTERLY LOW TO MIDLVL FLOW ACROSS THE REGION.