Aikyam-Lab/Synoptic-Bench huggingface dataset:
/issued 315 AM CDT WED MAY 4 2016/ Upper ridge extending northward over the Rockies this morning will build east the next few days. However the next upper trough will move ashore the CA coast on Thursday becoming a cut off low. This low will wobble east before lifting northeast into the Central Plains. This low may bring storms to the region this weekend. High pressure and mild wx returns after that. Wind should be light and mainly northerly today coming back around to the south overnight as a new leeside trough sets up.
618 AM CDT WED MAY 4 2016 UPPER LEVELS SHOW AN AMPLIFIED RIDGE ACROSS THE ROCKIES WITH A TROUGH ACROSS THE GREAT LAKES REGION. RIDGE EXPANDS ACROSS THE AREA TODAY WITH THE CONTINUED WARM UP. WITH GUIDANCE FOLLOW WHICH PUTS HIGHS INTO THE LOWER TO MID 70S. A LITTLE COOLER ACROSS NORTH CENTRAL. WITH LOWS IN THE LOWER TO MID 40S EXPECTED.
EARLY VISIBLE SATELLITE PHOTOGRAPHS SHOW CLOUDS ARE ON THE INCREASE WITH TEMPERATURES ALREADY IN THE LOWER TO MID 80S ALONG THE ISLAND CHAIN. A PRE-FRONTAL TROUGH IS DRAPED FROM APALACHEE BAY. WHILE A EXITING WESTERN ATLANTIC RIDGE IS ALIGNED ACROSS THE ARCHIPELAGO OF CUBA. BECAUSE OF THIS PROGRESSIVE AND DEEPENING TROUGH. IT APPERARS AN EASTWARD MOVING PRE-FRONTAL BAND OF SHOWERS AND THUNDERSTORMS WILL ARRIVE IN THE LOWER KEYS BETWEEN 4 AND 5 PM.
925 AM MST WED MAY 4 2016 STRONG HIGH PRESSURE WILL LEAD TO VERY WARM TEMPERATURES TODAY WITH MANY LOWER DESERT LOCATIONS REACHING 100 DEGREES. A COOLING TREND STARTS THURSDAY AS A LOW PRESSURE SYSTEM MOVES INTO THE SOUTHWEST.
THIS MORNING STARTED OFF A BIT COOLER WITH OVERNIGHT LOWS IN THE 40S AND MOSTLY CLEAR SKIES. CLOUD COVER HOWEVER WILL INCREASE THROUGHOUT THE DAY DUE TO AN INVERTED TROUGH ACROSS THE REGION AND AN COLD FRONT APPROACHING FROM THE NORTHWEST. TODAYS HIGH TEMPS WILL STRIVE TO REACH BELOW NORMAL VALUES IN THE LOWER 70S. AS THE COLD FRONT MOVES THROUGH THIS AFTERNOON. JMS /ISSUED 623 AM CDT WED MAY 4 2016/ A COLD FRONT CURRENTLY OVER SOUTHERN ILLINOIS WILL CONTINUE SOUTHWARD AND ENTER THE TN VALLEY BETWEEN 18-21Z.
STRONG HIGH PRESSURE ALOFT WILL CONTINUE TO PROVIDE DRY AND STABLE CONDITIONS. SOUTH WINDS WILL BE A BIT STRONGER THAN YESTERDAY AND TEMPERATURES WILL BE A FEW DEGREES WARMER. A HIGH PRESSURE RIDGE WILL KEEP THE AIRMASS DRY AND STABLE.
AN UPPER AIR LOW PRESSURE SYSTEM WILL BE DIVING SOUTHEAST THROUGH THE OHIO VALLEY. THAT UPPER LOW WILL TRACK INTO NORTH CAROLINA THURSDAY AFTERNOON.
601 AM CDT WED MAY 4 2016 Current satellite imagery and surface obs show a weak cold front moving through the Midwest. Surface temperatures warmed into the upper 50s ahead of the cold front, but will drop into the upper 40s to low 50s once the front passes through. A few cumulus clouds will be possible today and with decent mixing of the lower levels, temperatures should quickly rebound with highs in the mid and upper 60s. Upper level ridge positioned over the inter-mountain west and High Plains will dominate the weather through the remainder of the work week before breaking down as a large trough moves onshore and into the Great Basin.
930 AM PDT WED MAY 4 2016 A LOW PRESSURE SYSTEM WILL SLOWLY APPROACH FROM THE PACIFIC AND RESULT IN COOLER AND CLOUDIER WEATHER TODAY AND THURSDAY.
PRECIPITATION MAY ALSO LINGER ALONG THE HIGH TERRAIN AS THE UPPER LOW DROPS SOUTH LATE TONIGHT. CHATTANOOGA AIRPORT, TN 71 47 63 48 / 70 50 20 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 67 45 58 46 / 70 80 50 30 OAK RIDGE, TN 67 46 59 47 / 80 80 40 30 TRI CITIES AIRPORT, TN 64 43 56 46 / 70 90 70 60.
HIGH PRESSURE WILL BRING A WARMING TREND THROUGH MIDWEEK. THE NEXT PACIFIC TROUGH WILL ADVANCE INTO THE GREAT BASIN LATE IN THE WEEK. MORNING WATER VAPOR AND H5 ANALYSIS PLACE THE AXIS OF A HIGH AMPLITUDE RIDGE JUST EAST OVER THE INTERIOR ROCKIES. UPSTREAM A CLOSED LOW OFF THE CENTRAL CALI COAST CONTINUES TO SLOWLY CHURN EAST. A WARM SOUTHWESTERLY FLOW ALOFT IN PLACE ACROSS THE EASTERN GREAT BASIN WILL TREND TO INCREASE OVER THE NEXT 24 TO 36 HOURS AS THIS TROUGH CONTINUES ITS SLOW EASTWARD EVOLUTION. SURFACE WINDS ACROSS THE WEST LIKELY REACHING BREEZY LEVELS OUT OF THE SOUTH WITH DEEP MIXING AND THE CONTINUATION OF INCREASING FLOW ALOFT WITH FURTHER ADVANCEMENT OF THE TROUGH.
616 AM CDT WED MAY 4 2016 TRANQUIL WEATHER PATTERN WILL CONTINUE THROUGH THE PERIOD AS UPPER RIDGE DOMINATES ACROSS THE REGION.
The approaching trough is splitting, with the southern end forming a closed low off the central California coast.
/ISSUED 344 AM CDT WED MAY 4 2016/ HI AMPLITUDE RIDGING WILL BE THE PRIMARY WEATHER DRIVER FOR TODAY WHICH WILL BE RATHER PLEASANT AND TRANQUIL FOR MAY. RIDGE AXIS SLOWLY SHIFTS EASTWARD THURSDAY PROVIDING SEASONAL TO SLIGHTLY WARMER TEMPS AND LIGHT WINDS UNDER RISING HEIGHTS ALOFT AS THE CLOSED LOW ENCROACHES ON OUR REGION FROM THE WEST.
1002 AM EDT WED MAY 4 2016 SHOWERS WILL BE POSSIBLE THROUGH TONIGHT AS A LOW PRESSURE SYSTEM MOVES ACROSS THE AREA.
1204 PM EDT WED MAY 4 2016 COLD FRONT CURRENTLY OFFSHORE WILL MOVE AWAY FROM THE REGION ALLOWING A COOLER AND DRIER AIRMASS TO OVERSPREAD THE AREA.
/ISSUED 421 AM EDT WED MAY 4 2016/ COLD FRONT HAS EXITED THE CWA THIS MORNING. CLOSED UPPER TROUGH WILL IMPACT THE AREA THROUGH THURSDAY. WITHIN TOLERANCE BUT ON THE LOW SIDE COMPARED TO THE NEIGHBORS AND THIS MAY BE A BIT TOO CONSERVATIVE IF THE CONVECTION DOES TAKE ON A MORE ORGANIZED LINEAR FORM. AS CLOSED TROUGH SPINS OVER THE CAROLINAS THURSDAY. 31 UPPER CLOSED LOW CIRCULATING OVER THE MID ATLANTIC STATES AT THE START OF THE PERIOD.
1051 AM MDT WED MAY 4 2016 PLEASANT WEATHER CONTINUES TODAY AS HIGH PRESSURE REMAINS IN CONTROL. THE RIDGE AXIS THAT HAS SET UP OVER THE CWA WILL SLOWLY MOVE EAST WITH LITTLE CHANGE TO EXPECTED WEATHER. SIMILAR CONDITIONS WILL OCCUR AGAIN ON THURSDAY THOUGH AN AREA OF LOW PRESSURE JUST OFF THE WEST COAST WILL START TO AFFECT OUR WEATHER. THIS LOW WILL CAUSE THE PRESSURE GRADIENT TO TIGHTEN SOME ALLOWING FOR SOME GUSTY WINDS MAINLY OVER SOUTHEASTERN UTAH. THE LOW WILL ALSO ALLOW MOISTURE CONTENT TO INCREASE. THE LOW PRESSURE CENTER APPROACHING SOUTHERN CALIFORNIA WILL FORCE THE RIDGE AXIS THAT BROUGHT THE NICE WEATHER TO OUR EAST.
THIS TREND EXPECTED TO CONTINUE INTO THIS AFTERNOON AS BROAD FORCING AHEAD OF APPROAHING SHORT WAVE TROF COMBINES WITH.
A COLD FRONT CURRENTLY RESIDES FROM PONTE VEDRA TO JUST NORTH OF OCALA. THIS COLD FRONT WILL CONTINUE TO PUSH SOUTHEASTWARD DURING THE DAY. SOME DRIER AIR IS STARTING TO WORK INTO SOUTHEAST GEORGIA WITH DEWPOINTS IN THE LOWER TO MID 50S ACROSS THE NORTHERN PRECIPICE OF THE CWA. A COLD FRONT HAVE CROSSED THE GEORGIA WATERS THIS MORNING. LOW PRESSURE WILL THEN ORGANIZE NEAR THE NORTH CAROLINA OUTER BANKS TONIGHT.
Surface analysis this evening places a ridge of high pressure over the Mississippi Valley. /issued 343 PM CDT Fri Oct 21 2016/ High pressure will settle over the Mid-South tonight. The pleasant autumn weather will continue into Saturday as the high remains over the region.
High pressure across the region will maintain VFR conditions through the TAF period. Low level moisture advection will gradually increase Saturday Night with warmer min temps and a few patches of cloud cover.
There is and will be patchy fog tonight over the Lower Columbia Basin and Blue Mountain Foothills as well as the eastern Columbia River Gorge. Conditions on Saturday will be much drier and warmer.
1154 PM CDT Fri Oct 21 2016 Ridge of high pressure extends from southwest Texas northeast through central Missouri and continuing northeast into the upper Midwest. This ridge will drift southeast tonight and Saturday. Remainder of the area will probably be a bit warmer due to the passage of the ridge axis and subsequent warmer return flow from the south.
744 PM EDT Fri Oct 21 2016 A ridge of high pressure currently over the western CWA will continue to diminish lake effect rain and snow showers that are mainly over central Upper MI. The upper trough over the Great Lakes right now will shift east while an upper ridge moving in behind it. Since cloud cover will move in from the west, the coldest area will be interior central Upper MI in the low 20s. Saturday night: A weak ridge will be in place Saturday evening before slowly sliding off to the east of the area late Saturday night. Temperatures will be warmer than Friday night due to the aforementioned increased cloud cover/WAA.
630 PM CDT Fri Oct 21 2016 Quiet night ahead as fairly strong upper level ridging builds across the Northern Plains. While the air mass is a bit warmer than this morning, do expect cool overnight lows in the 30s. Southerly flow will increase through the day as high pressure shifts east. This will allow warmer air to move in and should set up a very nice day. Plains upper ridging will provide plenty of subsidence, dry air, and mild temperatures for a couple of pleasant fall days after the short wave passes well to the north along the Canadian border.
Isolated to scattered showers continue this evening across the higher terrain of far eastern Kentucky. Trough axis shifting east into the Appalachians will allow for this activity to continue a weakening trend, although a decent pressure gradient will allow for enough of a low level upslope component to keep mention in the forecast through around midnight.
Dewpoints underneath the current ridge are also in the lower to mid 40s.
624 PM CDT Fri Oct 21 2016 Ridge of high pressure extends from southwest Texas northeast through central Missouri and continuing northeast into the upper Midwest. This ridge will drift southeast tonight and Saturday. Remainder of the area will probably be a bit warmer due to the passage of the ridge axis and subsequent warmer return flow from the south.
The cold front in central Oregon will weaken as it slides through SE Oregon and SW Idaho overnight. As a result of the front, highs will be a few degrees cooler on Saturday. Cold front to the northwest will advance as far east as Missoula, MT - McCall, ID - Burns, OR, tonight before dissipating Saturday morning.
1012 PM EDT Fri Oct 21 2016 Chilly air behind a cold front will move over the eastern Carolinas tonight.
Gilchrist Synoptic Setup: Hot high pressure exists over the Desert Southwest with it arching up into the intermountain West forcing southwest to zonal flow over northern California through Idaho and Montana. A large pacific trough sets off the coast of British Columbia and is trying to move inland.
934 PM EDT Fri Oct 21 2016 Low pressure along the mid-Atlantic will merge with another low tracking up the east coast and continue north to New England on Saturday.
Overall, lows are expected to be warmer tonight due to winds helping to mix the air. Another mild and dry day is expected for Saturday under an upper level ridge. Winds at mountain top are weakening and will trend more westerly with time as the ridge axis moves overhead on Saturday. Aside from keeping temperatures immediately underneath the wave clouds cooler during the early afternoon, these areas should not have any trouble reaching high temperatures in the mid 70s today like the surrounding Plains. Do not expect wave cloud development tonight across the foothills and nearby plains given weaker winds aloft out of the west Saturday morning and the stable layer above and just downstream of the ridge tops is weaker than on Friday.
840 PM CDT Fri Oct 21 2016 With high pressure over SE Texas expect calm winds and clear skies tonight.
753 PM EDT Fri Oct 21 2016 Strong cold front is just off the Virginia coast early this evening with tight pressure gradient situated between low pressure just southeast of Long Island, and high pressure over the midwest.
/ISSUED 840 PM CDT Fri Oct 21 2016/ With high pressure over SE Texas expect calm winds and clear skies tonight.
902 PM PDT Fri Oct 21 2016 Still very dry inland Saturday, but more noticeably cooler as the highest temperatures in the inland valleys only reach the low ninetys.
1156 PM CDT Fri Oct 21 2016 Dry and rather mild weather should prevail through the short term as broad area of high pressure at the surface and aloft dominates the pattern in advance of a strong upper trough approaching the West Coast.
716 PM EDT FRI OCT 21 2016 An upper level trough and attendant cold front will track east and off the coast this evening. Much cooler and drier air will overspread the state tonight and Saturday. The showers have all but ended in the far eastern Coastal Plain associated with the cold frontal passage. Winds will again weaken Saturday night, possibly enough so to decouple across the southern and western Piedmont as high pressure builds in from the southwest.
Sfc ridging will persist across the region overnight before slowly drifting E across the lower MS Valley Saturday. Winds have begun to shift more northeasterly in response to the eastward advancing high pressure. As the high shifts farther east on Saturday, winds will gradually veer more east southeast with high temperatures recovering nicely into the mid to upper 70s.
Updated forecast will lower temps across the higher terrain of SE OK otherwise no changed needed.
720 PM EDT Fri Oct 21 2016 Cool high pressure will prevail this weekend.
1130 PM EDT Fri Oct 21 2016 Tight pressure gradient situated between low pressure just southeast of Long Island, and high pressure over the midwest will keep gusty winds around through Saturday.
Strong cold front has pushed through much of the area with much cooler and drier conditions moving into the region tonight. Cold front will continue to push to well south of the waters tonight.
1224 AM EDT Sat Oct 22 2016 Cool high pressure will prevail this weekend.
Dewpoints underneath the current ridge are also in the lower to mid 40s. Otw, high pressure to prevail.
Some concern in those areas that are normal a bit colder than normal, that lows could dip to the lower to mid 30s. 50 inches, while dewpoint temperatures across AR in the lower to upper 40s.
810 PM EDT Fri Oct 21 2016 Upper level trough keeps clouds showers and clouds around into Saturday.
The combination of ascending air and cooler mid- level temperatures will produce a band of light rain showers across portions of north-central MT later tonight into early Saturday. Dry conditions and brisk west winds will develop Saturday behind the associated cold front.
717 PM EDT Fri Oct 21 2016 Cold front has moved offshore with cooler and substantially drier overtaking the area. An upper level trough axis will cross the region by Saturday afternoon allowing reinforcing cold air into the area. The cooler air will reside over the region through the weekend with mostly clear skies. Cold air advection has overtaken the area with dewpoints already falling into the lower 40s across much of the area with lower 50s in the eastern Midlands. Current lake temperatures are in the lower to middle 70s and with overnight lows dipping into the 40s mixing will continue over area lakes. High pressure from the Plains will be building in behind departing upper trough.
The upper trough axis was moving east of the region this afternoon with most of the lower clouds shifting east-northeast of the forecast area.
527 PM MDT FRI OCT 21 2016 00Z TAF CYCLE A strong ridge of high pressure will cause VFR conditions to persist area-wide through tonight and Saturday. The ridge axis will begin to shift east of New Mexico Saturday, allowing some mid and high level clouds over west and especially southwest parts of the forecast area. A warming trend will continue into the weekend with plenty of sunshine as high pressure dominates.
1036 PM CDT Fri Oct 21 2016 Quiet night ahead as fairly strong upper level ridging builds across the Northern Plains. While the air mass is a bit warmer than this morning, do expect cool overnight lows in the 30s. Southerly flow will increase through the day as high pressure shifts east. This will allow warmer air to move in and should set up a very nice day. Plains upper ridging will provide plenty of subsidence, dry air, and mild temperatures for a couple of pleasant fall days after the short wave passes well to the north along the Canadian border.
649 PM CDT Fri Oct 21 2016 A warm front/trough will move across the forecast area tonight. Saturday to remain dry with the warm wedge still over our area and the sunshine we should get should also boost highs into the 50s most locations, a welcome change for outdoor activities after our week of cooler values.
The first bona fide cold front of the dry season is moving into Central Florida at this hour. Cold front across north Florida will sweep southward through the peninsula followed by a surge of cooler and drier air (the coolest since early May) on increasing northwest to north winds. High pressure centered over the lower Mississippi Valley will build eastward with a ridge axis extending into the western Atlc.
/issued 343 PM CDT Fri Oct 21 2016/ High pressure will settle over the Mid-South tonight. The pleasant autumn weather will continue into Saturday as the high remains over the region.
The first strong cold front of the season passed through our forecast area today. We're seeing the usual discrepancy, albeit small, in the NWP guidance between the warmer raw model output and cooler MOS. MOS is often too warm as the PBL winds do not go calm immediately after a cold front passage. Leaning more toward the warmer guidance still gives us low temperatures of around 50 in FL, and mid to upper 40s in south GA and AL.
1042 PM EDT Fri Oct 21 2016 Upper level trough keeps clouds showers and clouds around into Saturday.
CAA has continued today behind yesterday's cold frontal passage with temps only reaching the low 70s this afternoon. The much cooler and drier airmass will allow overnight temps to drop well into the low 40s area wide and even upper 30s in some locations. Tomorrow will be slightly warmer as 850mb temperatures hover around 8 degrees C, which is only about a degree or so warmer than today. However, due to such an anomalously dry airmass, dewpoints could mix out into the low 30s and upper 20s tomorrow.
1258 AM EDT Sat Oct 22 2016 A cold front with limited moisture will move offshore this evening. Strong high pressure will build in from the west over the weekend.
Still expecting patches of cloud to hold on during much of night with the cold cyclonic flow and the trough axis overhead. Lake effect showers are underway beneath the upper trough which is currently directly overhead and will persist, along with the stratus, through the early evening. Deepening low pressure off the New England coast and high pressure being forced east downstream of a deepening Aleutian low will force winds to back to northwesterly prior to midnight. The gradient alone will be sufficient to prevent frost except on an isolated basis, but temperatures will still fall into the low to mid 30s in most areas per most guidance.
629 PM CDT Fri Oct 21 2016 Dry and rather mild weather should prevail through the short term as broad area of high pressure at the surface and aloft dominates the pattern in advance of a strong upper trough approaching the West Coast.
1043 PM EDT Fri Oct 21 2016 Cold front has moved offshore with cooler and substantially drier overtaking the area. An upper level trough axis will cross the region by Saturday afternoon allowing reinforcing cold air into the area. The cooler air will reside over the region through the weekend with mostly clear skies. Current lake temperatures are in the lower to middle 70s and with overnight lows dipping into the 40s mixing will continue over area lakes. High pressure from the Plains will be building in behind departing upper trough.
/00Z TAF/ Surface analysis has high pressure over the area which should support VFR for the next 24/30hrs.
Better chances for frost should remain east of I-55 where the lower dewpoints and coldest mid-level air will reside. Southwest winds will develop Saturday morning as the ridge axis shifts east of the area. Sprawling ridge of high pressure currently extending from Ontario to the Southern Plains will shift eastward across the area tonight, providing mostly clear skies and light winds. The ridge axis will be centered over the eastern KILX CWA by 12z Saturday, with some light return flow developing further west across the Illinois River Valley. and with dewpoints currently ranging from the middle 30s west to the lower 40s east, think these numbers look reasonable. Once the ridge axis shifts further eastward, southerly return flow will bring warmer air back into the area on Saturday. With south winds and full sunshine, afternoon highs will reach the lower to middle 60s.
841 PM CDT FRI OCT 21 2016 Upper level ridging is building into the western Great Lakes overnight. High pressure will provide light winds and small waves through the weekend. The rest of the area has seen a few nights with near-freezing temperatures and frost, so will discontinue issuing frost/freeze headlines in those areas. Highs should range in the mid to upper 50s in the northeast half of the area, to the lower 60s in the southwest half.
651 PM CDT FRI OCT 21 2016 Sprawling ridge of high pressure currently extending from Ontario to the Southern Plains will shift eastward across the area tonight, providing mostly clear skies and light winds. The ridge axis will be centered over the eastern KILX CWA by 12z Saturday, with some light return flow developing further west across the Illinois River Valley. and with dewpoints currently ranging from the middle 30s west to the lower 40s east, think these numbers look reasonable. Once the ridge axis shifts further eastward, southerly return flow will bring warmer air back into the area on Saturday. With south winds and full sunshine, afternoon highs will reach the lower to middle 60s.
800 PM EDT Fri Oct 21 2016 Low pressure along the mid-Atlantic will merge with another low tracking up the east coast and continue north to New England on Saturday.
800 PM EDT Fri Oct 21 2016 Isolated to scattered showers continue this evening across the higher terrain of far eastern Kentucky. Trough axis shifting east into the Appalachians will allow for this activity to continue a weakening trend, although a decent pressure gradient will allow for enough of a low level upslope component to keep mention in the forecast through around midnight.
Expect light and variable winds overnight, with temperatures falling into the low/mid 60s across most of the area. Upper level high pressure is building across the region from the west. Lower humidities with dewpoints in the lower 60s over the next couple of days will allow for some cooling at night. Upper level high pressure remains over the area. The ECMWF is a little stronger with the ridge while the GFS tries to retrograde it to the west a little sooner.
Temperatures will be a little cooler, but remain slightly above normal.
924 PM EDT MON SEP 19 2016 A cold front will progress eastward, reaching the coast tonight before drifting out to sea.
1037 PM EDT MON SEP 19 2016 A weak cold front will merge with a trough off the southeast coast late tonight. This trough will linger near the coast through much of the week and a chance of showers and thunderstorms will continue. As of late this evening, water vapor imagery depicts an upper trough axis shifting over the area. This trough will develop into a cut-off low later tonight and linger over the area. Meanwhile, the low level circulation associated with the remnants of former tropical cyclone Julia remains off the southern NC coast and a surface front/trough extending out along the back side of the low has pushed south into the CSRA and will drop south of the area later tonight.
708 PM EDT MON SEP 19 2016 TYS and CHA are expected to remain VFR through the forecast period, but fog appears likely at TRI given the rainfall yesterday and the expected drop of temperatures into the lower 60s tonight. With the lowering sun angle, the fog may persist until 14-15Z.
High pressure will build into the area by the weekend finally bringing drier conditions.