Aikyam-Lab/Synoptic-Bench huggingface dataset:
629 PM EDT Sat May 20 2017 Rain chances will increase Sunday with the approach of a cold front. Mid-level ridging over the forecast are will provide stable conditions overnight. Cloud coverage will increase as the ridge continues to shift east and moisture advection increases as flow aloft becomes southwesterly. Sufficient warming aloft and increasing cloud cover will support warmer than average low temperatures.
549 PM CDT Sat May 20 2017 A cold front is currently spreading east across the area this afternoon. The front had roughly made it to the Highway 65 corridor early this afternoon. Temperatures behind the front are in the lower 60s with temperatures in the 70s ahead of the front. Dry conditions will occur on Sunday as highs warm into the upper 60s to the lower 70s.
then as the upper level low and occluded front moves through the area another band of rain will move through the region. On Sunday, the closed low will move into northern Minnesota and northern Wisconsin.
435 PM EDT Sat May 20 2017 High pressure moves east tonight and Sunday. The only exceptions will be in and around the NYC metro area where lows will only fall into the lower 50s and across the Long Island pine barrens where upper 30s will be possible. High pressure slowly moves offshore as a frontal boundary starts to approach the region.
212 PM EDT Sat May 20 2017 Aviation A low pressure system developing in Kansas will track northeast through tonight. A cold front associated with this storm will push eastward through Lower Michigan Sunday morning.
230 PM MDT Sat May 20 2017 Deep closed low over the Rockies continues to slowly shift NE with backside impulses expected to affect the region the next couple days. Main forcing and associated FGEN from the upper low will exit the FA late this afternoon and evening with rain ending over scentral SD.
111 PM EDT Sat May 20 2017 High pressure builds this morning, then moves east late today and tonight. NE winds turn to the E/SE and lighten as high pressure builds in from the north. Cool temps tonight, ranging from around 40 in the normally cooler locations, to around 50, will warm into the 60s Sunday, still below normal. By Sunday night, the ridge axis moves east, and deep SW flow, and WAA moves in.
Influx of cooler and drier air will dominate the weekend before modest moisture returns ahead of next s/wv trough that helps amplify north central U. upper level cyclone.
A cold front in association with the upper low lifting northeast over the Plains will continue to sweep east across western Arkansas and southeast Oklahoma this afternoon and into the evening.
/issued 337 AM CDT Sat May 20 2017/ Cold front currently heading into the Big Bend with gusty northerly winds in its wake. Front will continue to sag south into Mexico today with much cooler temperatures expected in its wake. Guidance is indicating some low level moisture and instability will persist through tonight across the lower Trans Pecos and portions of the Big Bend. This moisture will combine with an upper level disturbance and the left exit region of the subtropical jet to produce a slight chance to a chance of showers and thunderstorms from the southeast Permian Basin south to the lower Trans Pecos and Big Bend through tonight. Large scale lift may also be enhanced by the right exit region of a northern stream trough.
A stronger cold front crosses from the west Sunday and Sunday night.
148 PM EDT Sat May 20 2017 High pressure builds this morning, then moves east late today and tonight. NE winds turn to the E/SE and lighten as high pressure builds in from the north. Cool temps tonight, ranging from around 40 in the normally cooler locations, to around 50, will warm into the 60s Sunday, still below normal. By Sunday night, the ridge axis moves east, and deep SW flow, and WAA moves in.
Expecting a quarter to half inch in the valley and to the east with the higher amounts in the MN half of the FA.
144 PM CDT Fri Apr 28 2017 Closed upper low will move down across the 4 Corners region later today and swing across NM Saturday.
Temperatures will continue to warm a bit and a slight downslope component in the low-level wind will help this along.
Issued by National Weather Service WILMINGTON NC 135 PM EDT Fri Apr 28 2017 Broad high pressure will remain over the region through this weekend.
The cold front that pushed south and east of our area last night will push northward today as a warm front. Some scattered/isolated thunderstorms can't be ruled out as the warm front is pushed northward today. However, expected cloud cover with the warm front could keep the area from reaching that high. therefore, have edged away from MOS guidance and towards the warmer consensus blends. Rain chances will diminish as we go into the evening hours as the warm front will be well north of our area.
406 PM CDT Fri Apr 28 2017 A warm layer and weak ridging aloft have helped prevent the formation of thunderstorms, and this will likely continue to inhibit storms until about 8 pm or so. A very sharp cold front will move through the southeast half of Oklahoma and into north Texas tomorrow.
251 PM CDT Fri Apr 28 2017 Upper level trough was located across the central Rockies early this afternoon with a strong upper level jet streak digging on the back side of the trough. A warm front was located to the south of Missouri early this afternoon where dewpoints were creeping into the 60s near the bootheel region of MO.
A dry cold front will continue to move southward through Arizona early tonight, producing gusty north to northwest winds area-wide through the late evening hours. A strong mostly dry cold front is still poised to move south through the south central AZ deserts and mountains, including the greater Phoenix area later this afternoon. As for shower threats, the low level moisture surge from Mexico forecast by the models has been half as much. Dry northwest flow aloft, along with warmer temperatures are forecast this period.
Upper ridge will build over the area on Saturday in response to an upper low digging into th southern rockies.
334 PM MDT Fri Apr 28 2017 Increasing clouds late tonight will prevent subfreezing temperatures in the Grand Junction vicinity tonight, but mostly clear skies will bring widespread freezing temperatures to the central Gunnison, Uncompahgre and North Fork of the Gunnison river valleys tonight. This low will then move east and northeast to southeast CO late tonight. As this low moves east, clouds will be draw from east to west across the forecast area late tonight. These clouds will spread over northwest and central CO preventing widespread sub- freezing temperatures in the Grand Junction Vicinity. Skies will clear again Saturday night which may lead to more freezing temperatures over west-central Colorado.
Road temperatures near the I-80 summit are already below freezing, and with falling temperatures through the day, snow should have no problem sticking to the road. Saturday will be quite chilly with temps struggling through the 30s for SE WY and into the low 40s over NE.
A cold upper low will form near the four corners region late tonight then move southeast into the southern Rockies later in the weekend.
Temperatures ranged from the lower 30s in portions of the Arrowhead to the lower 50s in east Central Minnesota. High pressure will continue to build into the Northland overnight, allowing skies to generally clear for most areas. Saturday is shaping up to be a warmer day with considerable sunshine.
Ridging will remain parked over the Southern U. Persistent low pressure over the Southern Plains, ahead of the mid level low, will keep the local pressure gradient tight and the switch to the wind machine on.
Building high pressure leading to a sunny day across NorCal with temperatures reaching into the 50s in the mountains and 70s in the Valley. As upper level trough drops into the Rocky mountain west, tightening pressure gradient has lead to breezy northerly winds across the Valley this afternoon. As ridge remains in control, expect 4-5 degrees of warming on Saturday compared to today's temperatures.
Central Alabama will be under the influence of a 500mb ridge centered just offshore of the southeastern U. , of which is forecast to amplify a bit as a 500mb trough deepens over the southwestern U. High temperatures today should max in the mid-upper 80s, slightly warmer on Saturday with upper 80s becoming more common + a few 90s possible (F).
The next shot of lift will start to head toward the area late tonight and into the day on Saturday in the form of broad and persistent isentropic upglide as heights aloft increase ahead of an intense early spring jet carving out a large trough over the desert southwest.
Upper level low was over NW Ontario early this morning. This wave will move east this morning as well as the upper low. High pressure will continue to build into central ND today and move over the Red River valley tonight. Tonight will see lows a bit below freezing with light winds and clear skies.
Expect another round of gusty winds as a cold front impacts the state today.
319 PM EDT Fri Apr 28 2017 A warm front will develop over the lower Ohio Valley tonight.
231 PM CDT Fri Apr 28 2017 A warm front is lifting north across the region. Will continue to monitor closely as warm front lifts north, and we warm sector.
150 PM CDT Fri Apr 28 2017 A warm front is lifting north across the region. Will continue to monitor closely as warm front lifts north, and we warm sector.
Temps today were considerably cooler today and over the West central part of the state temps remained in the mid to upper 30's much of the day allowing for periods of snow to fall.
Once a cold front slides across the Panhandles, winds will switch out of the north and increase into the 15 to 25kt range with slightly higher gusts. Ceilings are also expected to lower behind the cold front but should remain VFR/MVFR until early Saturday morning. " A potent mid-level low pressure center is expected to bring accumulating snows to the northwest part of the Combined Texas and Oklahoma Panhandles Saturday and Saturday night. At this time the higher elevations of Cimarron County Oklahoma look favored to receive a significant snowfall. Strong north winds tonight will bring freezing temperatures and the potential for light snow to mix in with the rain in the northwest.
246 PM EDT Fri Apr 28 2017 Unsettled but warm weather is expected for the weekend with a crossing warm front. Most models push the warm front north toward the New York and Pennsylvania border where it stalls late day Saturday.
246 PM EDT Fri Apr 28 2017 High pressure will slide off the southeast coast Saturday.
Warm front that was analyzed across northern TX earlier this morning has lifted into far southern OK. with storms likely holding off until after 9-10 pm as the low-level jet strengthens. Great areal coverage of storms will be north of the warm front which should be lifting farther north into southeast OK. although any storms that remain near the warm front and rooted closer to the boundary layer may become supercellular.
305 PM EDT Fri Apr 28 2017 Warm front lifts through overnight.
High pressure continues to ridge across the state and will produce a southerly component wind which will help to pump moist and warm air over the region. High pressure will continue to build across the eastern Gulf of Mexico into the weekend, with generally easterly/southeasterly winds, turning onshore each afternoon with the sea breeze.
500mb trough negatively tilted and closed off 700mb low providing enhanced lift over western nebraska today. A dusting this afternoon mainly north of Highway 2 and a dusting tonight over the higher elevations to the west. With boundary layer temperatures starting off at or below freezing in the morning hours, precipitation will also start off as a rain/snow mix. As temperatures rise above freezing during the morning, precipitation will change over to all rain. As the low pressure system deepens across Kansas/Missouri on Saturday night, Nebraska will remain on the northwest of the precipitation shield.
301 PM MDT Fri Apr 28 2017 Current surface analysis shows low pressure now over eastern CO, with dry high pressure over ND. Upper level analysis shows broad upper trough covering the western and central US, with low pressure within it sinking south across eastern UT and western CO. Strong upper jet wraps around the low from the Pacific NW to the Southern Plains. The highest totals were in the Gillette area and across parts of southern Campbell County, where 6+ inches were reported, with around 12 inches in parts of the Gillette area. Upper level low will continue to sink south to the Four Corners area tonight, with remaining pcpn sliding south and west out of the area with it by this evening.
Then, after skies clear through the night, the region will be waking up to a very pleasant spring day for your Saturday! Temperatures will warm into the 50s for western Montana, and into the low 60s across areas of central Idaho (namely, the Camas Prairie region).
The only exception for the overnight hours will be across the far north near a stalled out warm front in Southern Missouri and the Lower Ohio Valley.
443 PM CDT Fri Apr 28 2017 Showers developing this afternoon across much of the Panhandles as a vigorous upper low near the Four Corners region digs south and east across central and eastern New Mexico tonight through Saturday.
305 PM EDT Fri Apr 28 2017 A warm moist southerly flow will continue through the weekend, as a deep high pressure ridge strengthens off the Southeast coast. The mid level anticyclone will continue to build over and just off the Carolina and Southeast coast, ensuring net subsidence aloft, with steady warming through 850-700 mb, keeping the column capped. Expect above normal highs in the lower 90s with lows Sat night in the mid/upper 60s to lower 70s.
The lowest FFG amounts are just below 3 inches mainly across central MO and far northwestern portions of the CWA.
Another passing mid-level trough Saturday along with nose increasing 850mb moisture transport will produce a likelihood of showers across far northeast IA/southwest WI. Look for the clouds and scattered showers will hold temperatures down across the south in the 45-50 degree range with slightly warmer temperatures in the lower 50s expected north of I-90. Increasing rain chances will be seen Saturday night with a second surge of 850mb moisture transport ahead of low pressure lifting out of the Southern Plains.
130 PM EDT Fri Apr 28 2017 Warm front lifts through late today/tonight.
Mostly sunny and a bit warmer on Saturday with highs from the mid 50s to lower 60s. and seeing a bit warmer conditions today with the same airmass in place tomorrow.
Deep layer ridging has continued to build in across the region with breezy and moist southerly flow off the Gulf.
This may have an impact on our max temp forecast but with deep layer ridging building through the day, most inland areas should still reach near or just above the 90 degree mark, with lower to mid 80s along the coast.
Locally breezy this morning coast and hills otherwise sunny and warmer today.
Large scale upper level trough lingers over the western US with main low center now located over CO/UT while a nearly stationary smaller scale upper low remains to to the north over SK/AB.
We will continue to be on the west side of the upper ridge tomorrow with the front well to our west and north.
Sunny and warmer today and becoming breezy again tonight in the hills under offshore flow and clear skies.
635 PM EDT Fri Apr 28 2017 A warm front will develop over the lower Ohio Valley tonight.
Upper low has sunk south to the four corners region. the southern stream trough is too far south to impact us, but the northern stream will have a weak trough axis shift though north central Montana.
An upper level low sits just north of the four corners region with broad troughing extending over the western U. This upper low will move southeast through the period and the trough further deepens and extends well into Mexico by Saturday evening. Upper level ridging continues to hold over the Florida peninsula and will further build along the east coast through the short term period. On the surface, a broad area of high pressure near Bermuda continues to ridge southwest across the peninsula through the end of the week and into the weekend. A ridge on the surface and aloft will be in place over the the Atlantic Ocean off the coast of Florida as low pressure with a cold front trailing into the Gulf of Mexico develops over the central U.
653 PM EDT Fri Apr 28 2017 Unsettled but warm weather is expected for the weekend with a crossing warm front. Most models push the warm front north toward the New York and Pennsylvania border where it stalls late day Saturday.
/ISSUED 1105 AM CDT Fri Apr 28 2017/ With temperatures already above yesterday's high temperatures, look for afternoon temps to reach the low 90s. Dewpoints are already in the 70s areawide as warm front surges north.
Inverted sfc trof that has become focus of precip will continue to shift slowly southwestward. The upper low will dive further south on Saturday. allowing some ridging to develop into the area.
Most models push the warm front north toward the New York and Pennsylvania border where it stalls late day Saturday.
Early afternoon temperatures were mostly in the 70s west of the mountains and 80s in the lower deserts. Amplification of both the high pressure ridge over the East Pacific and the trough over the western US will occur this afternoon and tonight as a wave and associated strong jet stream dive south a little inland from the west coast. Winds will decrease rapidly Saturday afternoon as the support aloft decreases as the troughing in the west shifts east and the north flow aloft weakens. It will be much warmer west of the mountains, especially near the coast as some temps could be above 90 within 10-15 miles of the coast, with highest temps in Orange County.
315 PM CDT Fri Apr 28 2017 Southerly flow has returned to the ArkLaTex bringing much warmer temperatures areawide. Main focus of severe weather will be in the vicinity of a warm front that moved across the ArkLaTex earlier today and which is now located in central Arkansas. Storm development will occur along an eastward moving cold front, developing from the south and becoming linear through the afternoon as mid-level vort max aligns with eastward progressing storms.
404 PM CDT Fri Apr 28 2017 The ridge of dry high pressure stretching from far northern Canada through ND and much of SD will remain across western and northern SD through much of the day Saturday.
A warm front currently situated across the southern half of the mid-state will continue to push northward over the next few hours. Gusty southerly winds will persist through the afternoon as a warm front psuhes through the area.
Our area remains between an offshore ridge and a trough over the Rockies this morning. However, the eastern half of the area is under a more northeasterly flow and wrap around moisture from low pressure in Utah and Colorado is sending clouds into that portion of the area. Have kept a slight chance to low end chance of mostly light showers from the Blue mountains eastward this afternoon though showers should end a few hours by late afternoon as the ridge expands further over our area and the low and trough dive further south into the the four corners region. Felt that low temperatures were too cool with ridging building over the area, so raised them a degree or two in places.
Rainfall appears to be mainly focused on the weak 850 trough which slides over the region this evening before departing east of the area after midnight. Cooler readings along the lakeshore expected.
215 PM EDT Fri Apr 28 2017 Warm front lifts through overnight.
315 PM EDT Fri Apr 28 2017 A warm moist southerly flow will continue through the weekend, as a deep high pressure ridge strengthens off the Southeast coast. The mid level anticyclone will continue to build over and just off the Carolina and Southeast coast, ensuring net subsidence aloft, with steady warming through 850-700 mb, keeping the column capped. And the orientation of the mid level anticyclone will shunt any isolated mountain convection well to our NW.
The center of the upper level low near the Four Corners this afternoon will dig southeast through New Mexico tonight and Saturday then east through the Panhandle Saturday night. The greatest chance of strong to severe thunderstorms continues to be Saturday night, as the cold front catching up to the dry line over the area and PVA and cooling in the base of the trough overcome the cap. The are some indications in some of the hi resolution models guidance that the cold front could race eastward east of I-35 and undercut some of the deeper convection after midnight.
Early afternoon water vapor imagery clearly delineated an amplifying trough across the Great Basin with an impressive 150 kt jet max digging southeastward along the upstream flank of the trough. Over the next 12 to 18 hours this trough will morph into a cutoff, blocking low over New Mexico with SSW flow over eastern Kansas. An effective warm front developed this morning along the I-70 corridor with a mesolow tracking eastward along the front. As this low pull eastward this afternoon and evening, the current 40-50 degree temperatures over the far northern CWA will spill southeastward over the rest of the area and set the tone for temperatures for Saturday.
344 AM CDT Thu Sep 14 2017 Light and variable to calm winds dominated Central IL this morning under a weak high pressure ridge axis. The western ridge drifts east somewhat, warming the midlevels a couple of degrees to 17-19C at 850mb.
Southerly lower level flow has returned to South Central Texas as upper level troughs over southern California and Pacific Northwest have lowered surface pressures in the Plains.
Weak high pressure builds for the weekend, with slightly more humid air.
/Issued 340 PM CDT Wed Sep 13 2017/ An upper ridge over the southern and central Rockies will break down by Friday as a longwave trough over the western states moves slowly east. Convection developing over the higher terrain and mountains of southern Colorado and northern New Mexico may track south southeast into the extreme western portions of the Panhandles during the late afternoon and evening today through Friday.
having merged with another, weaker migratory trough associated with the prevailing mid latitude westerlies. The good news is the trough continues to gradually weaken as it shifts slowly east.
On Thu, an upper low is forecast to move from srn portions of CA, acrs srn NV and into srn UT. Temps on Thu will be above average again, with highs mostly in the upper 80s to mid 90s across the plains, but a little cooler in northern portions of El Paso county, and in the 70s in the high valley locations. A big pattern change looks to occur by Friday, with the monsoonal ridge shifting east, and several upper disturbances dropping south out of the Pacific Northwest, much more like a fall or winter type pattern across the western states.
422 AM EDT Thu Sep 14 2017 A weak cold front will move across the north today and stall.
328 AM CDT Thu Sep 14 2017 Today will be a couple of degrees warmer than yesterday as the axis of an upper ridge moves overhead. As the ridge moves eastward a trough will amplify over the Rockies placing the FA under southwesterly flow aloft allowing the transport of tropical moisture northeastward from the Pacific.
332 AM EDT Thu Sep 14 2017 A weak cold front will move across the north today and stall.
Weak high pressure builds for the weekend, with slightly more humid air. The center of circulation of the low will move over central OH tonight, and then turn east across PA into Thursday. A weak high pressure builds late Thursday.
A mid and upper level trough axis has pushed SE across the region today with little to no noticeable effects on area weather. Mid level ridging to the west of the trough is then prog to strengthen/build in across the area on Thursday. Min temps tonight should be notably warmer than previous nights across inland areas.
However, there is some activity developing on the high plains that could continue to move downstream and impact the area.