Aikyam-Lab/Synoptic-Bench huggingface dataset:
719 PM CDT MON APR 25 2016 THE WEATHER PATTERN WILL UNDERGO CHANGES THE NEXT 24 HOURS AS AN UPPER LOW PRESSURE SYSTEM IN CALIFORNIA MOVES INTO THE CENTRAL ROCKIES TONIGHT WITH THE NEGATIVELY TILTED TROUGH EMERGING ONTO THE PLAINS LATE TUESDAY. THE POTENTIAL EXISTS FOR DANGEROUS TSTMS IN THE HIGH INSTABILITY/SHEARED ENVIRONMENT WITH POTENTIAL FOR TORNADOES. EXPECT THE UPPER LEVEL LOW ACROSS THE INTERMOUNTAIN WEST THIS AFTERNOON TO LIFT NORTHEAST INTO THE PLAINS TOMORROW. EXPECT FORCING AHEAD OF THE UPPER LEVEL LOW TO HELP INITIATE SEVERE THUNDERSTORMS BY LATE AFTERNOON OR EARLY EVENING. NEAR THE INTERSECTION OF THE DRY LINE AND WARM FRONT. SHIFTING NORTH DURING THE EARLY EVENING HOURS AND THE WARM FRONT LIFTS NORTH INTO NEBRASKA.
SO LOWS TONIGHT WILL BE A TAD WARMER THAN LAST NIGHT IN THE MID 50S TO NEAR 60.
640 PM CDT MON APR 25 2016 THE WEATHER WILL BE A LITTLE QUIETER TONIGHT AS THE LOW PRESSURE SYSTEM THAT HAS BEEN CAUSING ALL THE COMMOTION FOR THE PAST FEW DAYS EXITS THE REGION. THE LOW WAS SOUTH OF EAU CLAIRE. ASSOCIATED WITH AN ELONGATED EAST-WEST TROUGH ALOFT OVER NORTHERN AREAS OF MN/WI. PROFILE DATA IS QUITE SATURATED IN THE LOW LEVELS OVERNIGHT AND SOME DRIZZLE WILL LIKELY OCCUR ACROSS SOUTHERN MN AND ADJOINING AREAS OF WI. AN UPPER LEVEL TROUGH WILL GENERALLY REMAIN ENTRENCHED ACROSS THE ROCKIES. WITH SOUTHWESTERLY FLOW ACROSS THE CENTRAL CONUS BRINGING A COUPLE OF LOW PRESSURE SYSTEMS JUST SOUTH OF OUR AREA. TEMPERATURES ARE EXPECTED TO REMAIN COOLER THAN AVERAGE IN ADDITION TO THE MULTIPLE CHANCES OF PRECIPITATION.
COLD FRONT IS JUST MOVING IN SO RAIN WILL BE CHANGING OVER TO SNOW OVER THE NEXT FEW HOURS. UPPER LOW IN WESTERN UTAH WILL MOVE TO WESTERN COLORADO OVERNIGHT THEN TO THE FRONT RANGE OF COLORADO TOMORROW. ON TUESDAY WITH SOUTHWESTERLY FLOW AHEAD OF THE UPPER LOW. EXPECT SHOWERS TO DEVELOP BEHIND THE COLD FRONT. THIS FIRST OF THESE CLOSED LOW SYSTEMS IS ACCOMPANIED BY A COLD FRONT WHICH MODELS DROPPING SOUTH OUT OF WYOMING TUESDAY AFTERNOON. MODELS SHOW THE UPPER LOW OVER THE NERN CORNER OF THE STATE PLACING MOST OF THE CWA UNDER A STIFF NWLY FLOW.
AN UPPER LEVEL LOW PRESSURE SYSTEM SLOWLY PASSING NORTH OF NEW MEXICO WILL CONTINUE TO PRODUCE STRONG WINDS AND FIRE WEATHER CONCERNS IN MANY PLACES FOR THE REMAINDER OF TODAY. A STRONG LEE TROUGH WILL CAUSE BREEZY TO WINDY CONDITIONS TO RETURN ACROSS EASTERN NEW MEXICO WITH MORE FIRE WEATHER CONCERNS POSSIBLE. AFTER A COLD FRONT CROSSES FROM THE WEST TONIGHT. MOISTURE WRAPPING AROUND THE UPPER LOW WILL MOVE INTO WESTERN AND NORTHERN NEW MEXICO WITH A CHANCE OF SHOWERS AND THUNDERSTORMS TUESDAY AFTERNOON. A RIDGE OF HIGH PRESSURE WILL BRING DRY WEATHER.
COOLER TEMPERATURES AND GUSTY WINDS WILL REMAIN IN PLACE TUESDAY AS A STORM SYSTEM SHIFTS EASTWARD THROUGH THE WESTERN US.
703 PM EDT MON APR 25 2016 HIGH PRESSURE ALONG THE NORTH CAROLINA COAST WILL MOVE SOUTHEAST TODAY. LOW PRESSURE OVER THE UPPER MISSISSIPPI VALLEY WILL MOVE EAST TODAY WITH A COLD FRONT EXTENDING FROM NEW YORK TO KANSAS BY TUESDAY MORNING.
A closed low pressure system was moving across the Central Rocky Mountains this evening with a cold front extending southwest. a warm front extending east across Kansas and a dryline line over the Oklahoma/Texas Panhandles into Southwest Texas. the closed low will continue to shift eastward to the lee of the Rocky Mountains by Tuesday morning. Increasing warm air advection and a low level jet interacting with the pooling moisture near the warm front will allow for the potential for showers and thunderstorms to be possible late tonight. these conditions should keep lows tonight slightly warmer than last night with most locations holding in the 60s.
DEEP UPPER LOW SHIFTING THROUGH SOUTHERN UTAH THIS EVENING.
This will interact with a developing warm front along Central Missouri to cause isolated to scattered showers and thunderstorms to form overnight. Interesting that the high resolution models suggest that supercells and line segments will develop a little further east across eastern Kansas into eastern Oklahoma by 21z to 00z well ahead of the dryline.
927 PM EDT MON APR 25 2016 COOL AND DRY CANADIAN HIGH PRESSURE IS EXPECTED TO CONTROL AREA WEATHER ALL WEEK. A LOW PRESSURE SYSTEM WILL MOVE SOUTH OF THE REGION TUESDAY. HIGH PRESSURE EXTENDS FROM THE NORTHERN BEAUFORT SEA AND INTO THE HUDSON BAY AND NORTHERN MAINE THIS EVENING. LOW PRESSURE NEAR CHICAGO WILL MOVE INTO THE POCONOS BY TUE MORNING. HIGH CLOUDS IN ASSOCIATION WITH THE LOW WILL INCREASE ACROSS THE DOWNEAST REGION OVERNIGHT WHILE IT REMAINS CLEAR TO THE NORTH. STRONG HIGH PRESSURE AND A COLD AIR MASS WILL BUILD IN FROM THE NORTHWEST TONIGHT WITH SEASONABLY COLD TEMPERATURES EXPECTED AGAIN. LOW PRESSURE WILL PASS WELL TO THE SOUTH OF THE REGION TUESDAY.
1017 PM EDT MON APR 25 2016 A LOW PRESSURE SYSTEM WILL APPROACH THE REGION THE WEST OVERNIGHT AND BRING RAIN SHOWERS WITH A FEW RUMBLES OF THUNDER.
1008 PM EDT MON APR 25 2016 DRY HIGH PRESSURE ALONG THE COAST TONIGHT WILL SLOWLY SHIFT EAST AND FARTHER OFFSHORE TUESDAY.
725 PM EDT MON APR 25 2016 HIGH PRESSURE ALONG THE NORTH CAROLINA COAST WILL MOVE SOUTHEAST TODAY. LOW PRESSURE OVER THE UPPER MISSISSIPPI VALLEY WILL MOVE EAST TODAY WITH A COLD FRONT EXTENDING FROM NEW YORK TO KANSAS BY TUESDAY MORNING.
755 PM EDT MON APR 25 2016 A LOW PRESSURE SYSTEM WILL APPROACH THE REGION THE WEST TONIGHT AND BRING RAIN SHOWERS WITH A FEW RUMBLES OF THUNDER.
CHATTANOOGA AIRPORT, TN 58 84 63 83 / 0 10 20 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 59 83 62 83 / 0 10 30 30 OAK RIDGE, TN 59 83 60 83 / 0 20 30 30 TRI CITIES AIRPORT, TN 52 82 58 81 / 0 20 50 40.
1137 PM CDT MON APR 25 2016 FOR 06Z TAFS /ISSUED 837 PM CDT MON APR 25 2016/ WEAK RIDGING WILL KEEP SKIES MOSTLY CLR OVERNIGHT AND ALONG WITH LIGHT S/SW WINDS. NEW NAM MODEL DATA COMING SHOWS THAT A WEAK RIDGE WILL CONTINUE OVER THE AREA THRU THE FCST PERIOD.
Chattanooga Airport, TN 54 82 57 82 / 0 10 0 10 Knoxville McGhee Tyson Airport, TN 51 79 55 80 / 0 10 0 20 Oak Ridge, TN 52 81 55 81 / 0 10 0 10 Tri Cities Airport, TN 48 78 51 79 / 0 10 0 10.
Anticipate a mainly clear and calm night in store with temperatures around midnight dropping into the mid-50s across the higher elevation and low 60s elsewhere. Right now the low end chance pops are holding true but if coverage continues to increase. H5 ridge builds over the region through the weekend.
Winds are expected to be light for most of the period, but may be variable for several hours on Thursday as a weak mid level ridge moves across the southeast U.
The low ceilings and fog will gradually thin and dissipate by mid-morning Thursday.
Good flight weather is in store for the Great Valley with a dry air mass under protective ridging.
1026 PM EDT Wed Apr 12 2017 High pressure will close out the work week with drier conditions and decreasing clouds.
There is a better chance for showers Thursday as a warm front lifts north. A return to a more active pattern is just ahead with warmer weather and periodic chances of rain and storms this weekend. A warm front will begin to move north tonight as a weak upper level system moves into the area. Otherwise, much warmer air will be just south of the area by late Thursday afternoon.
740 PM EDT Wed Apr 12 2017 Showers have ended as the cold front has moved off to the east. High pressure will dominate for the latter part of the week with dry weather.
Cooler high pressure will follow for the end of the week. Have made slight adjustments to the hourly temperature forecast to account for slightly warmer conditions. Also, have added a mention of isolated thunder as the sfc cold front edges southeastward into a slightly unstable air mass. ~WSS Cold front stretches across the heart of the CWFA late this afternoon. Highs Thursday will be cooler, with highs around 70 northeast ranging to mainly mid 70s elsewhere except for possibly some upper 70s near the South Carolina border.
As the low-level temperature inversion breaks toward midday on Thursday, winds should pick up for the afternoon. Another short wave mid/upper trough will move NE from west TX into the southern plains on Thu/Fri.
Cooler high pressure will follow for the end of the week. This scattered convection a result of weak convergence along a slow moving sfc cold front with additional lift provided by a shear axis crossing overhead. Hourly temperatures have been trending slightly warmer than forecast, and have adjusted to reflect this trend. Highs Thursday will be cooler, with highs around 70 northeast ranging to mainly mid 70s elsewhere except for possibly some upper 70s near the South Carolina border.
632 PM CDT Wed Apr 12 2017 A few thunderstorm clusters should develop through early this evening, near a pre-frontal trough axis from western through north- central Kansas.
Additional small pockets of showers are extending from just west of the Lower Keys to the waters surrounding the Upper Keys.
Upper level low pressure system approaching the Pacific Northwest coast this evening. The cold front, at 02z, has reached Central Oregon with light mostly stratiform precipitation across Southeast Oregon this evening. The front exits the region Thursday afternoon with the upper level trough moving over the region for convective showers. Instability is limited though the entrance region of the upper level jet could support a few thunderstorms in the higher terrain. Surface cold front in ern OR 06Z-12Z. Isolated thunderstorms along and behind the cold front.
/BB/ Any isolated shower and storm activity that formed this afternoon quickly dissipated following the loss of daytime heating as the frontal boundary finally cleared the CWA and mid-level ridging built in aloft. Lowered min temps a degree or two, mainly in the favored radiational cooling locations in the east, which resulted in temps in the mid 50s to low 60s in line with the lower end of latest MOS guidance. a warm weather pattern will continue with the low level thermal ridge intensifying a bit for Thursday.
/issued 333 PM EDT Wed Apr 12 2017/ Scattered showers will continue to move inland for the rest of this afternoon into this evening as a low level trough continues to move into the eastern Gulf of Mexico.
Cloud cover will continue to increase as upper level low moves out of eastern New Mexico and into the Texas Panhandle overnight. The latest data suggests that this feature will slide east and then northeast over the Plains Thursday and Thursday night, around the western periphery of the ridge aloft centered along the Gulf coast.
739 PM EDT Wed Apr 12 2017 High pressure dominates through Thursday.
Expect much cooler temperatures on Thursday with rain and snow returning.
A few thunderstorm clusters should develop through early this evening, near a pre-frontal trough axis from western through north- central Kansas.
A large area of low pressure aloft will slowly drift just off the west coast. The low will be slow to weaken and exit the area.
/issued 139 PM CDT Wed Apr 12 2017/ An active afternoon and evening of severe weather is underway as storms have begun developing across the higher terrain of W TX and SE NM. Strong surface heating along with moist, upslope flow could lead to isolated severe storms in the higher terrain.
High pressure in place at the surface and aloft will provide quiet weather in the short term with just a bit of patchy fog possible in our river valleys late tonight. Bumped highs up into the low 80s for many areas.
Vapor imagery and upper air data showed a short wave trough axis beginning to move east of our forecast area, which will result in sinking and drying aloft in its wake.
Any isolated shower and storm activity that formed this afternoon quickly dissipated following the loss of daytime heating as the frontal boundary finally cleared the CWA and mid-level ridging built in aloft. Lowered min temps a degree or two, mainly in the favored radiational cooling locations in the east, which resulted in temps in the mid 50s to low 60s in line with the lower end of latest MOS guidance. a warm weather pattern will continue with the low level thermal ridge intensifying a bit for Thursday.
1020 PM EDT Wed Apr 12 2017 High pressure dominates through Thursday.
1159 PM CDT Wed Apr 12 2017 Quiet weather is expected over the next 24 hours with high pressure situated to our northeast. Winds will become southerly on Thursday, and temperatures will be even warmer in the upper 70s to lower 80s, which is around 10 degrees above normal.
This is all occurring ahead of an approaching cold front that will sweep across the forecast area late overnight and exit Thursday morning. Precipitation will decrease west to east behind the cold front with some increase of westerly winds. A cooler unstable airmass will move in behind the cold front which will lead to instability showers Thursday afternoon with the possibility of some thunderstorms producing small hail. A low pressure system over the e pac will continue to pump moisture into the two state area overnight.
Shower and thunderstorm chances will increase ahead of a trough on Thursday.
711 PM EDT Wed Apr 12 2017 High pressure will close out the work week with drier conditions and decreasing clouds.
824 PM EDT Wed Apr 12 2017 High pressure will close out the work week with drier conditions and decreasing clouds.
A passing cold front will then spread rain and mountain snow showers with occasional MVFR ceilings across the area from 12Z in the west through 00Z in the east.
839 PM CDT Wed Apr 12 2017 High pressure over the OH Valley continues to keep winds out of the north this evening. Some additional drier air will filter into the area tonight, as dewpoints upstream are in the low to mid 40s.
/issued 355 AM CST Sat Nov 12 2016/ SHORT TERM (Today through Sunday): As the mid to upper level low over New Mexico and NC Mexico moves slowly northeast it will draw in abundant moisture from the Tropical Pacific. Moisture depth and content increases along with moderate large scale ascent in advance of the upper low as it moves across Texas Sunday. Clouds will be lowering and thickening through the day with temperatures slightly below yesterday's highs ranging from the low to mid 70s. Mild and sticky tonight as the humidity increases as the rain develops with lows dipping into the low to mid 60s then a wet cool day Sunday with temperatures running below guidance values in the lower 70s.
651 AM EST Sat Nov 12 2016 High pressure will build over the region for the remainder of the weekend.
The aforementioned closed upper low is not the typical pattern that you would see when dealing with the 1st potential freeze of the season. Low temps will be primarily in the lower 30s, except mid to upper 30s southwest. The upper low will tighten up a bit with the axis located to our southeast.
Light northeast winds have recently freshened with gusts over 15 knots in the Lower Keys in the wake of a subtle boundary that eminated along the southwest Florida coast. Northeast winds are currently surging slightly near the lower Keys with gusts near 15 knots.
After a recording breaking warm day, lots of high clouds and some virga over the area this morning as a weakening frontal system tries to push east into the big North American blocking ridge.
1012 AM EST Sat Nov 12 2016 High pressure with well below freezing temperatures tonight.
A repeat of low clouds across southeast NM is not expected tonight as the upper low will finally shift northeastward. High temperatures across the south and east will be cooler than average today.
928 AM CST Sat Nov 12 2016 The cold front has pushed south of the CWA and clouds were clearing out a little faster than expected. A gusty north wind will offset insolation and provide a slightly cooler than normal day. A very subtle cold front is pushing across the area this morning. While there will be no appreciable change in the low levels, the front will help reinforce the existing airmass. Behind the front, high pressure centered over the Ohio Valley will build across much of the eastern U.
412 AM CST Sat Nov 12 2016 The main focus of the short term forecast is the wind and the temperatures as a very dry airmass remains in place with a ridge moving overhead, keeping us precipitation free. Tonight, while wind speeds will decreases some, 5-10 MPH winds across the area will continue all night, and 10-15 MPH along the Buffalo Ridge. This and the warmer air mass in place will keep overnight lows much warmer, generally in the upper 30s to lower 40s.
529 AM CST Sat Nov 12 2016 The upper level ridge over the region today will slide to the east setting up a brief period of zonal flow through Sunday. A positive tilt short wave trough crossing southern Canada Sunday night will push some troughing across the region along with a weak secondary short wave trough. The cold front that will come through with the short wave trough should have little to no frontogenesis with it and only around 1 ubar/s of up glide on the 290K isentropic surface ahead of it Sunday evening. This system will be quickly followed by another trough that should again have a couple of short wave troughs in it.
717 AM EST Sat Nov 12 2016 A cold front will be south of the area today. The pressure ridge behind the front will extend through the Ohio River Valley. Weak low pressure will develop just off the Georgia and South Carolina coast Sunday.
The synoptic pattern this morning is characterized by a 500mb ridge over the central and northern High Plains with a trough extending from Virginia westward to the Mid-South region. As the 500mb trough to our north continues to move southward, so will the area of high pressure and shallow cold advection regime. Part of the upper trough is expected to be left behind and become closed off tonight into Sunday over North AL/GA. The low clouds are expectedcreate quite a temperature gradient from west to east across the CWA on Sunday.
Water vapor satellite imagery shows a closed upper low still over El Paso this morning with another strong trough moving through the Mid-South. This trough axis should help push the front farther south today but slowly. By Sunday the trough now over the Mid-South will begin to close off over the S Appalachians and the closed low over the Big Bend will begin to open up and shear out over Texas.
343 AM PST Sat Nov 12 2016 High pressure aloft will weaken slightly today.
620 AM EST Sat Nov 12 2016 A large area of high pressure will build slowly south across the central Mississippi Valley region into the Ohio Valley by tonight.
920 AM EST Sat Nov 12 2016 A large area of high pressure will build slowly south across the central Mississippi Valley region into the Ohio Valley by tonight.
610 AM EST Sat Nov 12 2016 A cold front will be south of the area today. The pressure ridge behind the front will extend through the Ohio River Valley. Weak low pressure will develop just off the Georgia and South Carolina coast Sunday.
Near zonal upper flow over the area with longwave trough north of the region from New England through the Ohio River Valley into the Southern Plains. Tonight-Sunday, closed upper low to develop and move through the Tennessee River Valley with wrapping shearing vort lobe to slowly push a mainly dry frontal boundary through N FL with an increase in low level moisture and slightly warmer temps.
1005 AM EST Sat Nov 12 2016 High pressure will continue over the Great Lakes Region today allowing for a light northeast steering flow along with dry weather over South Florida today. Zonal flow sets up across the Gulf of Mexico extending over the Florida peninsula with high pressure keeping control of the area returning light easterly winds across S Florida this weekend.
The upper flow pattern this morning over Northeast Montana consists of an upper-level ridge with westerly winds aloft. There is a large trough/storm system located in the Gulf of Alaska. This wave will ride over the ridge, flattening it late tonight. Then the upper ridge rebounds from the west late Sunday.
628 AM EST Sat Nov 12 2016 High pressure will build over the region for the remainder of the weekend.
638 AM EST Sat Nov 12 2016 A large area of high pressure will build slowly south across the central Mississippi Valley region into the Ohio Valley by tonight.
Warmer and dry on Sunday. High pressure will remain in control through the period, providing quiet weather and moderating temperatures.
641 AM EST Sat Nov 12 2016 High pressure will build across the eastern U.
539 AM CST Sat Nov 12 2016 The main focus of the short term forecast is the wind and the temperatures as a very dry airmass remains in place with a ridge moving overhead, keeping us precipitation free. Tonight, while wind speeds will decreases some, 5-10 MPH winds across the area will continue all night, and 10-15 MPH along the Buffalo Ridge. This and the warmer air mass in place will keep overnight lows much warmer, generally in the upper 30s to lower 40s.
A short wave moving across Canada will drag a cold front across Montana and the high plains by evening. This will also flatten the strong ridge over the region.
530 AM EST Sat Nov 12 2016 A cold front will be south of the area today. The pressure ridge behind the front will extend through the Ohio River Valley. Weak low pressure will develop just off the Georgia and South Carolina coast Sunday.
615 AM EST Sat Nov 12 2016 High pressure across the Midwest will build toward the Carolina coast through Sunday.
Impacts from the upper low get a bit better through the period as a portion of the jet moves back into the region later tonight (RRQ) and Sunday morning. As a result, not as warm today and even a bit cooler on Sunday due to the areas of rain and cloud cover.
Northeasterly surge behind the cold front will increase northeast winds to near 15 knots with gusts to 25 knots from KJAX northward.
622 AM EST Sat Nov 12 2016 High pressure and a dry airmass will settle into the region through the weekend with the dry weather continuing into the first part of the work week. A sharp 500 mb trough axis is pushing south across the Ohio Valley early this morning but the net result of this is just a band of some high level cloudiness. Meanwhile, we are still seeing some spotty remnant lake effect clouds across northeast portions of our fa but these clouds should continue to dissipate through daybreak as the low level flow becomes more easterly and weakens. As the high shifts off to our southeast, we will get into a little bit of return flow through the day on Sunday.
559 AM EST Sat Nov 12 2016 High pressure with well below freezing temperatures tonight.
1006 AM EST Sat Nov 12 2016 High pressure is slowly sinking south of the region and the tighter gradient is beginning to increase the winds over the region, especially the Great Lakes.
814 AM EST Sat Nov 12 2016 High pressure across the Midwest will build toward the Carolina coast through Sunday.
613 AM CST Sat Nov 12 2016 Wk cold front movg south of I-20. Upper- level trough across the Deep South to maintain partly cloudy skies across much of the region throughout the day with afternoon high temperatures forecast to climb into the mid to upper 60s.
927 AM EST Sat Nov 12 2016 Canadian high pressure will build across the area through tonight before moving to our south for Sunday.
The fog should diminish later this morning or lift into a low stratus deck as an approaching cold front moves through the region. This cold front might not be strong to complete scour out the narrow valleys. This front will also bring scattered showers to the region, but the precipitation will be mainly confined to the higher terrain. The ridge rebounds by Sunday causing a decrease in shower activity, plus the potential for the redevelopment of fog by the morning.
713 AM EST Sat Nov 12 2016 High pressure shifts to the South today and Sunday.
Sunday, even with a strengthening low level inversion as 850 mb temps climb to around 14C, mixing heights should still be high enough with sunny breezy conditions to push sfc temps into the upper 50s, near the higher end of guidance.