Aikyam-Lab/Synoptic-Bench huggingface dataset:
1110 PM CDT Tue Sep 19 2017 Pattern remains in transition with weak ridge through the lower Mississippi Valley and weak ridging into the Great Lakes and Jose underneath off the coast of Long Island. Broad trough from the Pacific Northwest into the Dakotas from upper low over central Canada. Closer you get to the trough axis the lighter the winds. Highs on Wednesday only in the 70s as cooler air filters in behind a dry cool front. Wednesday cooler with highs in the 70s and mainly clear skies behind the cold front.
821 PM EDT Tue Sep 19 2017 High pressure will persist across northern New England as Jose meanders well off the New England coast tonight and through the end of the week.
The lower levels were quite moist with some drier air noted in the mid levels. /issued 326 PM CDT Tue Sep 19 2017/ High pressure at the surface over the eastern third of the country with upper ridging over the middle and lower Mississippi River Valley this afternoon is getting squeezed by a trough over the Rockies and Hurricanes Jose and Maria to the east.
659 PM CDT Tue Sep 19 2017 A cold front will sink slowly southward for tonight into Wednesday across Kansas, with hot temperatures continuing for locations along and east of the frontal boundary Wednesday afternoon.
522 PM MDT Tue Sep 19 2017 19z surface analysis had low near KPIR with pre-frontal trough into central NE and cold front into east central WY. 2-3KJ/kg MLCAPE has developed over central SD ahead of pre-frontal trough with Td/s in the mid-upper 60s. It'll be a race between the pre-frontal trough and synoptic lift as to whether strong instability and shear can be realized over south central SD late this afternoon.
1035 PM EDT Tue Sep 19 2017 Warm temperatures and dry conditions will persist through the remainder of the week and the coming weekend, as high pressure will remain in place across the region. Expect fog to develop not only in the river valleys, but south of Lake Ontario where dew points are the highest. Similarly, look for lows to run in the lower 60s across most locales, with mid to upper 50s in the cooler areas of the Southern Tier and North Country. Look for much of the same on Wednesday, as high pressure will remain in control across the region. 850mb temps will be just a little warmer will result in Wednesday running a couple of degrees warmer, with highs in the low 80s. For our interest here in the Lower Great Lakes region. The staunch summer-like ridge.
Clouds will begin to scatter out through the late morning into the afternoon with weak ridging and high pressure returning. On Wednesday, an upper trough will lift into Ontario and in response lift the boundary across southern Michigan to the north as a warm front. Will keep chances on the low end for the for now. An amplifying upper trough over the western CONUS will only cause more amplification of the upper ridge over the eastern CONUS through midweek.
1124 PM EDT Tue Sep 19 2017 High pressure will persist across northern New England as Jose meanders well off the New England coast tonight and through the end of the week.
644 PM CDT Tue Sep 19 2017 Pattern remains in transition with weak ridge through the lower Mississippi Valley and weak ridging into the Great Lakes and Jose underneath off the coast of Long Island. Broad trough from the Pacific Northwest into the Dakotas from upper low over central Canada. Closer you get to the trough axis the lighter the winds. Highs on Wednesday only in the 70s as cooler air filters in behind a dry cool front. Wednesday cooler with highs in the 70s and mainly clear skies behind the cold front.
926 PM EDT Tue Sep 19 2017 A weak upper level trough will move into the area on Wednesday and will linger while gradually dissipating through the end of the week.
Afternoon and evening shower coverage remained extremely isolated to the higher elevations Tuesday, with a weakening trend expected to continue after sunset. High pressure will remain across our area this afternoon into tonight. A weak surface cold front to the northwest slowly edging east towards the mountains late tonight. The cap will weaken enough to allow for isolated to scattered showers and thunderstorms along and west of the Blue Ridge mountains. A rather quiet weather pattern with little change in the low level/upper level features.
1000 PM MDT Tue Sep 19 2017 The dry cold front that race southward across the forecast area late this afternoon has already moved well south of the forecast area this evening. The higher mountains in Jackson and Larimer Counties could see some light snow overnight with a narrow band of baroclinicity straddling this area. A strong southwest/westerly flow aloft will be over the region with the mid level trough axis shifting to the north and east overnight. Strongest winds this afternoon ahead of a cold front that will push across the cwa from the northwest this evening. The cold front is already moving through KCYS at this time so fropa at Denver will be much sooner, by 01z. A longwave trough will slowly shift east across western North American through the later part of the week.
/issued 1000 PM CDT Tue Sep 19 2017/ For this update have removed the mention of rainfall and adjusted the cloud cover up with the current trend of low level moisture feeding into Central and North Texas and approach of short wave trough of low pressure across South Oklahoma and North and Central Texas, and along the Western side of weak upper level ridge over Southeast Texas and Southwest and East Texas.
Lows will range from the mid/upper 60s inland to the lower 70s coast.
700 PM CDT Tue Sep 19 2017 The main issue in the short term is the passage of a cold front tonight across the area. trough.
230 AM CST Wed Jan 31 2018 Next several days are mainly a temperature forecast as a cold front pushes harmlessly through the forecast area later this morning.
S-SW wind are expected overnight ahead a weak cold front.
317 AM CST Wed Jan 31 2018 Chilly morning across Middle Tennessee with temperatures currently ranging from the low 30s in western counties to the low 20s in eastern zones. The continued strong LLJ along with increasing low level moisture will lead to much warmer temperatures Wednesday night, with lows only dropping into the 40s. 00Z guidance continues to show rain breaking out just before sunrise in parts of the area, with rain increasing in coverage through the day as a strong cold front sweeps southeastward during the late afternoon and evening hours.
342 AM EST Wed Jan 31 2018 Mid level ridge axis is pushing off to our east this morning with high clouds starting to flow into the region. Gradient will eventually ramp up as a cold front moves into the Ohio river valley Thursday night, so temperatures may start to come up towards dawn. Models continue to be in good agreement on rain developing along the cold front as it moves across the area on Thursday.
337 AM CST Wed Jan 31 2018 Deep long wave trough that was digging south across the southeastern US has exited the east coast. At the surface, ridge of high pressure to the north is following the same path.
Temps at 3 AM were in the lower to mid 30s with patchy frost likely.
252 AM CST Wed Jan 31 2018 Early this morning, a cold front was progressing eastward across Iowa/Minnesota. The mild temps will be short-lived as a secondary cold front quickly swings through tonight with the true push of Arctic air. Boundary layer wind fields will gradually relax through the day with the approach of high pressure, but winds will stay breezy through the day with 20-30 kts of flow in the mixed boundary layer.
Temperatures, while cooler, are still expected to be running on the warm side of normal.
Southerly flow continues to strengthen across the Western Great Lakes region early this morning ahead of low pressure tracking eastward thru South Central Canada and an associated cold front extending thru the Northern Plains. Strong WAA will boost temps into the low to mid 30s across our entire CWA this afternoon. the third wave of snowfall will develop overnight as the main cold front arrives. Arctic air is firmly entrenched across the region (850 mb temps in the -22 to -25C range) so with troughing aloft and plenty of moisture to work with (mean 850-700 mb rh >70 percent) lake effect will be the focus.
The upper-level pattern will be transitioning to a more zonal regime overnight, with high pressure settling in overhead at the surface. In the upper levels nearly zonal flow will be overhead until a trough moves over the Central and Eastern U.
This will help amplify the upper trof/low moving across south central Canada into the Upper Midwest through Wednesday. The associated cold front will drop south across the area late tonight/Wednesday, though the modified Canadian/Pacific origin of the airmass will still support temperatures well above climo even with a bit more high cloudiness. The strong 150kt upper jet flowing over mid-America will continue to develop the mean upper trof across the eastern CONUS through Thursday night. A narrow band of transient lift along the southward sagging mid-level baroclinic zone may saturate down into the lower levels enough to support some very light snow or flurries across central Kansas.
Low pressure over south central Canada will track east tonight and pull a cold front through the lower Missouri Valley. Much colder air however is not far behind and a strong arctic front will sweep into the area on Wednesday night with high pressure building south out of Canada on Thursday.
Also removed Bordeaux and the North Laramie Range from the High Wind Warning as directions not conducive for strong winds behind the front. Decided to extend the High Wind Warning for northern Carbon and northern Albany Counties through midnight tonight. Have trimmed the High Wind warning out from much of Converse county into eastern Platte county where the strong wind threat appears to have pretty much ended. A cold front will sag south across the CWA this evening and will end the remaining high winds. A few snow showers possible mainly up north overnight into Weds as well as over the higher mtns but not much pcpn expected. Cooler across the CWA Weds will lighter winds over the plains but still gusty around the mtns.
South winds will still be a little gusty overnight and into tomorrow morning before relaxing a little bit ahead of a cold front.
358 AM EST Wed Jan 31 2018 High pressure over the Mid Atlantic region will move off the coast today.
Unfortunately, a trough moving thru Manitoba is pushing a cold front this way, w/models bringing it into the NE zones by 12Z Thu, and KMAF ~ 13Z.
236 AM CST Wed Jan 31 2018 Southerly winds continue to gust up to 30 mph in some areas early this morning, and this has helped keep temperatures fairly steady in the lower 30s. The cold front associated with low pressure in western Ontario will move into our area around midday to early afternoon, but little impact is expected initially. The second cold front, ushering in the next Arctic air mass, will begin moving through the forecast area Thursday morning.
With a dominant high pressure in place, dry conditions with unseasonably warm daytime temperatures will continue as the calendar changes from January to February. Tucson is coming off the warmest January high in 15 years yesterday with todays forecast high a degree cooler. Dry conditions with unseasonably warm daytime temperatures will continue for at least the next 7 days as high pressure remains over the region.
The next cold front will bring a mix of rain and snow, Thursday, before changing back to snow Thursday night. A cold front will move slowly southward through the area on Thursday. The main question remains as to whether the low level frontal zone clears the region prior to deeper moisture reaching the Ohio valley.
it will be a rather quiet TAF period with high pressure in control.
1125 PM CST Tue Jan 30 2018 Gusty winds have been observed this afternoon ahead of an approaching trough over the Dakotas. The warm front attendant to the system with weak isentropic lift is generating light snow from east central MN across west central WI. We could see some light freezing drizzle with the overnight round as we lose saturation in the dendritic layer.
310 AM CST Wed Jan 31 2018 Models in better agreement today in the near term with cold air advection continuing behind a cold front that moved through early this morning. Lows tonight in the low teens north to around 20 south.
The next cold front will bring a mix of rain and snow, Thursday, before changing back to snow Thursday night. A weak cold front will move slowly southward through the area on Thursday. The main question remains as to whether the low level frontal zone clears the region prior to deeper moisture reaching the Ohio valley.
This lowered min temperatures across the north by a few degrees. Cold front has move through the northwest portion of the state and will see some breezy conditions this evening southwest and south central, with the frontal passage, but expect this to be below advisory criteria and will not extend.
/issued 706 PM EST Tue Jan 30 2018/ High pressure keeps breezy northerly winds across the area tonight, gradually becoming east-northeast on Wednesday. Winds will begin subsiding on Thursday as the ridge axis migrates further south and into Florida. Meanwhile, the northerly flow will keep cold air advection in place with overnight lows tonight becoming the lowest this week, ranging from the low 40s over the NW interior to mid-upper 50s along the east coast.
Return flow will set up today as high pressure slides off the Carolina coast this afternoon and ridging stretches across the Gulf coast.
Breezy southwest winds overnight will decrease after sunrise as a weak cold front moves into the South Plains area weakening the pressure gradient. Temperatures in the 60s to low 70s on the Caprock and low to mid 70s off the Caprock this afternoon will warm further into the upper 70s to low 80s on Wednesday as compressional warming/downslope increase via westerly breezes to the south of a cold front approaching the forecast area from the north. This front should reach our northeast counties by mid to late afternoon, bringing slightly cooler temperatures to those areas. The cold front will continue through the forecast area Wednesday night, and Thursday will be quite a bit cooler, with highs only in the 50s.
For those wanting to observe the total lunar eclipse, high clouds are filtering in from the northwest and could obscure our view! Otherwise, this morning will start on a chilly note, but it will warm up nicely by this afternoon! A trough sliding out of southern Canada will break down the ridge overhead through the day and place zonal flow aloft. In return, WAA will warm up daytime highs to the low/mid 50s and low-level moisture will be returned. Southerly winds of 5-10 mph will persist tonight and combined with increasing cloud cover, overnight lows will be mild, in the lower 40s.
447 AM EST Wed Jan 31 2018 A cold front crosses Thursday, bringing rain. As high pressure moves off to the east today, a decent southwesterly wind flow will develop. With these winds, will go toward the warmer side of MOS guidance for highs. Winds will continue tonight as clouds increase in advance of an approaching cold front. With the clouds and wind, will go toward the warmer side of MOS guidance for overnight lows. The mean longwave trof will amplify yet again into the region with an associated cold front slated for Thursday evening.
242 AM CST Wed Jan 31 2018 The initial cold front is now through the region. A secondary cold front will propagate through the region from north to south this afternoon. Also expect increased cloud cover and possibly flurries with the passage of this secondary cold front.
113 AM EST Wed Jan 31 2018 Cold high pressure will affect the area through Wednesday, then move offshore on Thursday.
307 AM CST Wed Jan 31 2018 Southerly breezes winds will increase today as the quad state region becomes sandwiched between high pressure along the southeast coast and a cold front pushing southeast into the upper MS River Valley. Aforementioned cold front will push slowly southeast into the region later tonight and on Thursday, bringing a good chance for light rains over western KY. Much colder air will move in behind the cold front later Thursday and Thursday night.
1045 PM CST Tue Jan 30 2018 Even with enhanced mixing and warmer southerly surface winds of 15 to 30 mph, temperatures have been tempered by a thick cirrus deck overhead this afternoon. This again could lead to a small chance of light snow or flurries near the Buffalo Ridge as there appears to be enough saturation in the dendritic layer.
347 AM EST Wed Jan 31 2018 TODAY THROUGH THURSDAY: High pressure will slide east across the southeastern US today, emerging out into the western Atlantic later tonight and Thursday. After a chilly start this morning, it will be another cooler day with temps in the low 70s and the pressure gradient supporting another day of breezy conditions. Similar conditions hold as we head into Thursday, though expect temps to be a little warmer in the mid to upper 70s. Easterly flow component will lead to milder temps tonight, holding in the low 50s across the NW interior, mid 50s over the remainder of the interior and Gulf coast, and low 60s along the east coast.
/issued 711 PM EST Tue Jan 30 2018/ A cool evening expected across west-central and SW Florida tonight as high pressure settles in over the area. Mostly clear skies and diminishing winds should allow for some decent radiational cooling tonight with temps dropping to near freezing across portions of the Nature Coast with upper 30s to mid 40s expected elsewhere. Winds will continue to veer around to the east Wednesday and become rather light on Thursday as high pressure ridges west southwest across the region. Late in the week the next cold front will approach from the northwest and move into the region this weekend with breezy north to northeast flow returning.
A cold front currently arcing across the Central Plains continues pushing south and will be the primary weather maker late in the period. QPF will remain on the lower end as well with maximum values under a quarter of an inch. Cold air will lag the surface frontal boundary, so winter weather concerns are nil and sub-freezing air should not arrive in northern AR until late Thursday evening, after moisture and precipitation have pushed south and east of the area. By the end of the period, most areas will be near or below freezing with low 20s north and low 30s south.
Brisk northwest winds will make the falling temperatures into the lower teens feel like the single digits below zero (wind chill).
1234 AM EST Wed Jan 31 2018 High pressure will keep dry weather over the region tonight and Wednesday. A cold front will develop Wednesday night and Thursday, bringing a chance for rain and snow.
High pressure over the western states will result in dry weather and well above average temperatures through the coming week. Current upper-air and satellite analysis reveals a ridge of high pressure currently located off the coast of California, with a long wave trough across the central and eastern United States. A warm ridge of high pressure to sit along the California coast for several days.
On Wednesday, a warm front will pass north of the area and may trigger some light snow over some parts of the Finger Lakes and Tug Hill. The general trend will be for the lake effect to weaken and shift northeast as the low level flow shift to 300 then 280 late tonight. Could see a couple inches along the higher terrain in Onondaga, Cayuga, and Cortland counties. A deep trough will slowly rotate across the northeast through the short term period.
829 PM PST Tue Jan 30 2018 High pressure aloft will bring warm, dry weather through the weekend.
After a windy and mild day today, a cold front will bring chances for precipitation tonight and Thursday, along with much colder air. /Today/ With central Indiana in between high pressure to the southeast and an approaching cold front to the northwest, the pressure gradient will tighten up across the area.
1204 AM EST Wed Jan 31 2018 Cold high pressure will build east across the area tonight resulting in dry weather under diminishing winds. The high slides southeast and offshore the Carolinas Wednesday into Wednesday night.
Decided to extend the High Wind Warning for northern Carbon and northern Albany Counties through midnight tonight. Have trimmed the High Wind warning out from much of Converse county into eastern Platte county where the strong wind threat appears to have pretty much ended. A cold front will sag south across the CWA this evening and will end the remaining high winds. A few snow showers possible mainly up north overnight into Weds as well as over the higher mtns but not much pcpn expected. Cooler across the CWA Weds will lighter winds over the plains but still gusty around the mtns.
A weak cold front will track south across north central Nebraska tonight, however, no precipitation is expected with this front.
1140 PM CST Tue Jan 30 2018 High pressure is east of Arkansas and southerly winds have returned. Low pressure coming off the Rockies and its proximity to the high will tighten the pressure gradient over the region tonight and Wednesday. As a result, winds will be elevated, especially in the higher terrain of northern and western Arkansas.
252 AM CST Wed Jan 31 2018 An upper level disturbance moving across the northern plains is pushing a cold front into western Kansas early this morning. In the wake of an aforementioned cold front, temperatures should only reach into the 40s on Thursday. The large scale pattern for at least the next 10 days, and possibly through mid February, will continue to feature mean upper-level ridging over the West Coast and troughing over the Great Lakes and Midwest. Disturbances embedded in the jet stream will result in frequent cold frontal passages, with only small chances of post-frontal light snow with the stronger fronts. There is a tendency for the cold surges to be short-lived, with the brunt of the cold air shunted to the east of the high plains.
Gusty south winds will gradually subside by Wednesday afternoon as a cold front approaches. /Issued 255 PM CST Tue Jan 30 2018/ Forecast issues will focus on fire weather concerns tomorrow and a strong cold front/potential winter weather late in the weekend. Despite the improving low-level moisture, much warmer afternoon temps will yield very low RH values again, with readings less than 30-35% across much of the area. The Wednesday warmth will occur ahead of cold front that will slide through the area Wednesday night into early Thursday.
1227 AM EST Wed Jan 31 2018 A cold front crosses Thursday, bringing rain. Ridge of high pressure is pushing into the region and pushing snow showers out. Big forecast dilemma tonight is the low temperature forecast. Have went below guidance for forecast lows overnight, with generally teens in the Lowlands and down to single digits in the Northeast Mountains of West Virginia. Across the higher terrain there will also be some wind combined with the cold temperatures. Although the higher terrain will reach wind chill advisory criteria at times, most of the zone will remain above minus 10 for wind chills.
Cold front and gusty NW Winds nr Roseau-Thief River Falls-Fargo line.
A dry cold front will cross the area tonight into Wednesday. High pressure will strengthen again along the West Coast late in the week. This weather disturbance has pushed a weak cold front southward. Temperatures will be cooler tomorrow behind the cold front. However, valley should mix decently enough that maxes will remain warmer than climatological normals.
1230 AM EST Wed Jan 31 2018 Brisk southwest winds will bring milder temperatures and mostly cloudy skies to the region through Wednesday, with highs generally in the lower 40s Wednesday afternoon.