Aikyam-Lab/Synoptic-Bench huggingface dataset:
1000 PM MST Tue Mar 7 2017 High pressure building into the western states will send the storm track (jet stream) northward and out of our forecast area for the next several days.
Clear skies will prevail across southeast Arizona tonight, with warmer high temperatures projected for tomorrow.
344 AM EST Wed Mar 8 2017 A cold front will move across the region this morning. A broad trough of low pressure will settle into the northeast tonight and will persist over the area on Thursday.
/ISSUED 907 PM CST Tue Mar 7 2017/ A cold front has crossed the coast and cooler/drier air is working into the region. /ISSUED 535 PM CST Tue Mar 7 2017/ The outflow boundary/cold front was moving through KGLS and KLBX at 2330Z.
There could be a few showers tomorrow along the East Coast as a weak cold front approaches the area from the north. High pressure will continue to dominate the weather across South Florida through most of the week. A weak cold front will move into North and Central Florida on Wednesday and it will stall out in Central Florida Wednesday afternoon. As the weekend approaches, an area of low pressure will develop over the Plains. This low will move across the Southeast over the weekend and it will bring another front over North and Central Florida. High pressure will continue to remain in control of the weather through most of the week. High pressure will continue to weaken and the winds will continue to subside across the region.
A deep, stacked low pressure system over western Ontario will gradually lift eastward over the next several days, dragging a very slow-moving but potent cold front southward across the Plains. The cold front will pass through our forecast area Thursday evening and Thursday night, helping to push any lingering light rainfall out of the region, and allowing colder temperatures to filter in overnight.
Meanwhile, a weakening western Atlantic ridge axis is draped across north Florida. A frontal boundary will drop down the Sunshine State and become diffuse as high pressure moves quickly into the southeast United States by the second half of this weekend.
936 PM MST Tue Mar 7 2017 A rapid warmup can be expected over the next couple of days with high temperatures in the lower deserts climbing well into the 80s by Wednesday.
Cold front has just gone through PLR, EET, and A08. Will take a few more hours for the front to make it through and clear the low moisture out of there. All TAFs should be SKC by midday today with north winds as high pressure builds. 08 A line of showers and thunderstorms will move through the area ahead of cold front today and tonight.
The cold front that gave the area showers and thunderstorms has now passed southeast of Fort Payne, AL. Dew points in NW AL are already in the lower 40s with temps around 50 degrees. But have still left patchy fog in the forecast for the cooler and more sheltered locations and near bodies of water. Despite the cold front passage, the cooling trend tonight will be a short-lived affair. Highs on Wednesday should rise into the mid/upper 60s, and reach the lower 70s on Thursday. Average highs this time of year are in the lower 60s.
A cold front currently moving through the Southern Appalachian Region is producing scattered rain showers and increased winds across the TAF sites.
At the sfc, ridge is building into far ern MT/wrn SD which is allowing the winds to decrease across the region.
As low shifts east and high pressure builds in there should be at least partial solar and column warms slightly. Reinforcing shot of cold air with arctic high pressure builds into the forecast area Thursday.
Normal to slightly warmer than normal temperatures are forecast through this weekend along with a continuation of dry weather conditions.
254 AM CST Wed Mar 8 2017 The deepening closed upper low is currently parked over northwest Ontario near Hudson Bay as of 815Z. Embedded pieces of energy will continue to rotate around the upper low and across the forecast are through the morning. Cold, dry high pressure will cover the forecast area for the rest of tonight and Thursday.
1011 PM MST Tue Mar 7 2017 Northwest flow is in place3 over our CWA on the western side of large scale upper low (centered over southeastern Canada). Temps aloft moderate with lee trough redevelops and bias corrections indicate potential of lower 70s across much of our CWA. High temperatures should reach the low 70s on Thursday before a quasi back door cold front passes over the area during the afternoon/evening cooling temps back to near normal levels.
/06Z TAF CYCLE/ VFR conditions prevail this evening with mid-level clouds near 4-6 kft spreading across the region back overtop the shallow cold front. At 300 PM the cold front was located just south of a Del Rio to Uvalde to San Antonio to Gonzales line.
Upper level trough that affected the area will move over Hudson Bay by Wed night. An E-W upper level jet will nose into the area along the International border Wed night as a flat upper ridge moves in from the west. Upper level ridge builds over the western US and produce northwest flow aloft across the area. Another flat upper level ridge will approach the area from the west on Fri. Longwave upper trough over eastern Canada weakens and shifts a little east, however the trough does extend slightly south. Longwave ridge north of the Aleutians retrogrades a bit west and downstream longwave trough deepens over the Gulf of AK. Pattern generally amplifies with a trough in the eastern US and ridge in the western US by Tue.
Also, went below guidance for dew points this afternoon, taking them to the lower 20s. Tomorrow the high will slip off to the southeast as a cold front approaches from the north.
Arctic high pressure will keep the NE half cold and mainly dry.
skies will remain mostly clear and cooler air moving in will allow lows of drop into the 30s and low 40s.
There will be a larger north to south temperature gradient today, with highs near 50 north to the low 60s far south.
1230 AM EST Wed Mar 8 2017 [Through 06z Thursday] A weak cold front is currently moving into the area with a weakening line of rain along it. As the cold front sags through the area Wednesday, precipitation chances will wane as the instability decreases and dynamics are well removed to the north. Behind the front, a 1030mb high pressure area will slide across the southeast US. Highs Wednesday will be moderated somewhat due to the clouds and precipitation with readings in the lower to middle 70s.
Thus, let the high wind warning expire and issued/extended the wind advisory through tonight into Wednesday morning. With the high winds and dry conditions, fire danger will be very high through the rest of the afternoon. With breezy conditions, have gone with a warmer model guidance for lows tonight. High pressure building into the western Dakotas will bring light winds for at least the western half of the CWA on Wednesday. This is due to strong arctic high pressure dropping down from Canada that will entrain dry air over the eastern Dakotas.
The breezy westerly winds resulted in slightly cooler conditions with afternoon high temperatures only reaching into the upper 50s to low 60s. Southwest winds return for Wednesday with decent warm air advection for a warmer day. Cold front via northwest flow aloft sinks in Thursday with dewpoints pushing into the lower 50s.
410 AM EST Wed Mar 8 2017 Dry and windy today as strong high pressure moves in. Great setup today for strong winds, as a full March sun will warm the surface and cooler and very dry air moves in aloft. The sun will tamper the cooler air mixing down and temperatures will be a few degrees above normal.
1232 AM EST Wed Mar 8 2017 A cold front will approach from the west tonight and cross the area Wednesday.
339 AM CST Wed Mar 8 2017 A cold front moved into the CWA yesterday and is now located along the coastal waters just south of Lafourche and Terrebonne Parishes.
229 AM EST Wed Mar 8 2017 A weak cold front will move through the area this morning.
1241 AM EST Wed Mar 8 2017 High pressure will move in behind a departing cold front, bringing dry weather late tonight through Wednesday.
1240 AM EST Wed Mar 8 2017 Dry and windy today as strong high pressure moves in. Great setup today for strong winds, as a full March sun will warm the surface and cooler and very dry air moves in aloft. The sun will tamper the cooler air mixing down and temperatures will be a few degrees above normal.
As a cold front moves through the area today, rain chances will gradually decrease from west to east as the strongest dynamics remain well to the north with low instability across the area. High temperatures today are expected to range from the lower 70s across the northwest to near 80 across the far southeast big bend.
816 PM EDT MON JUN 27 2016 A cold front will swing through tonight bringing much cooler air in for Tuesday. with highs on Tuesday only reaching the low to mid 70s. Cold front has just about cleared southern portions of the forecast area. Secondary sfc cold front now just entering the southern Great Lakes will push through the local area late this afternoon and early evening. Tonight into early Tuesday with feature the main surge of cooler air as trailing mid-level trough axis from parent wave lifting into Quebec swings through the Great Lakes region. Dry otherwise with high temps on Tuesday significantly cooler in the low-mid 70s.
Adjusted temps a bit cooler thanks to the rainfall, and matched other grids to current obs trends.
We might need to lower overnight temperatures a bit given the proximity of the high, but we would like to watch dewpoint trends (as a proxy for efficiency of radiational cooling) the next few hours before making changes to forecast lows.
This is also where the highest precipitable water (PWat) axis values around 150 percent of normal are also located. So prefer to follow the highest Pwat values again, with the main PW axis shifting back north into Central KS. But the medium range models suggest that as the ridge flattens out on Sat, warmer temps will begin to move across the area for the end of the holiday weekend.
Per latest radar trends and HRRR, any lingering showers will move south of the PAH forecast area by 22Z as the cold front moves on through the area.
1137 PM CDT MON JUN 27 2016 Mid level impulse continues to move southeast across the Northern Plains which has allowed a weak surface cold front to move southeast across the CWA. Otherwise, cooler high pressure will build south across the Northern Plains overnight and into the day Tuesday before return flow sets up to our west Tuesday evening.
1031 PM EDT MON JUN 27 2016 A weak cold front will cross the region overnight with a chance of showers and possibly an isolated thunderstorm through Tuesday.
822 PM EDT MON JUN 27 2016 A cold front will move slowly across the area today and Tuesday. High pressure will bring a period of drier weather for mid week. and the Lower Susq River Valley through early Tuesday morning. Key point is most of the day the low-level temperature guidance is near and slightly above normal.
as a cold front moves into the area. /issued 408 PM CDT MON JUN 27 2016/ Subtle signs of the weakening upper level ridge still holding over east Texas as convection is being steered nearly clockwise with a gap in coverage along the I-20 corridor of NE TX/NW LA where the ridge axis has held firm. Upper ridge will continue a slow retreat to the west as the front slowly works in from the N/NE, aiding in the development of additional showers and storms overnight through Tuesday before gradually diminishing through Tuesday night.
/issued 316 PM CDT MON JUN 27 2016/ Showers and thunderstorms will continue to develop south into moisture-rich airmass across the Midsouth into early evening, ahead of a cold front dropping through Ozark plateau. Rain chances should decrease with airmass stabilization this evening, followed by a cold frontal passage overnight. Predominately dry weather will prevail across the Midsouth on Tuesday, with lower humidity and slightly cooler temps prevailing into the latter part of the workweek. More limited rain chances appear in store for north MS, under the northern extent of a midlevel height ridge centered over the northern Gulf of Mexico. Looking beyond the weekend, the subtropical height ridge over the Gulf of Mexico will amplify into the lower MS River valley, returning hot, humid and mainly dry conditions to the Midsouth.
A secondary round of cold advection is currently moving across S WI with doppler radar indicating a cold front moving onshore from Lake MI with the boundary extending nwwd across C WI. Isolated showers have developed behind the cold front over east central WI with more possible into the overnight mainly over far E WI. A small craft advisory is in effect for brisk nnely winds and 3 to 5 foot waves tonight and Tue in the wake of the cold front. Skies will turn mostly sunny tomorrow morning as high pressure builds into the area. Even with the sun, temps will be cooler than they have been in a while behind the departing trough.
/Issued 236 PM EDT MON JUN 27 2016/ Latest surface analysis and regional radars all show a frontal trough sagging into west and north TN with scattered to widespread showers and thunderstorms developing along and well south of the frontal trough across central TN and into North AL. expect the approaching trough and associated frontal boundary to the north to sag toward north GA this evening. H5 trough over the eastern U.
738 PM EDT MON JUN 27 2016 A cold front will approach from the west tonight and into Tuesday. The cold front will continue to push closer to the region and guidance pops increase after midnight to the morning hours. Overnight lows should be in the lower to middle 70s. A weak cold front over the western Appalachians will move into the forecast area on Tuesday while a secondary cold front approaches from the west.
A few late day thunderstorms possible mid-week over the higher Coastal Range and near the Sierra crest south of Tahoe. High pressure will remain over the region through at least mid week.
945 PM EDT MON JUN 27 2016 A cold front will move slowly across the area today and Tuesday. High pressure will bring a period of drier weather for mid week. Prefrontal sfc trof separates 70F dewpoints over the ridge and valley region of central PA from 58F to 60F dewpoints over the west central mountains this evening. Upper trof swinging into the eastern GLAKS is nudging a sfc cold front eastward which should reach the Lake Erie shore shortly. Slow moving upper trof/sfc cold front pushes into the northwest mountains in the pre dawn hours. Key point is most of the day the low-level temperature guidance is near and slightly above normal.
1000 PM EDT MON JUN 27 2016 High pressure will continue to move offshore tonight.
The center of high pressure will migrate over far northwest New Mexico by Tuesday.
Water vapor imagery and 28/00Z upper-air plots show a ridge that extends from southern Utah across the four corners into western New Mexico and Chihuahua Mexico. Meanwhile, an inverted trough is currently moving westward across southwestern Arizona, southern California and northern Baja.
945 PM EDT MON JUN 27 2016 A cold front will move through the forecast area tonight. A large area of high pressure will build over the region through the middle part of the week.
647 PM CDT MON JUN 27 2016 Much quieter weather this afternoon than the past coupe of days as high pressure builds southward across the region. This will push a reinforcing cold front down through at least the northern 1/2 of our CWFA by 12Z Tuesday.
613 PM MDT MON JUN 27 2016 Elongated ridge will dominate these periods, centered near the Four Corners. Initially this moisture looks to be in the mid- upper levels so the lowest elevations will still have dewpoints in the 30s with little rain expected to reach the ground. Meanwhile an inverted trough over southern California will slowly work northeastward around the western edge of the ridge into the western Great Basin.
1224 AM EDT TUE JUN 28 2016 Aviation A cold front will be pushing in from the northwest tonight. Much cooler air will settle into Lower Michigan behind the front on Tuesday.
Chattanooga Airport, TN 72 89 68 88 / 60 30 10 10 Knoxville McGhee Tyson Airport, TN 69 88 66 85 / 70 20 10 10 Oak Ridge, TN 69 90 66 85 / 60 20 10 10 Tri Cities Airport, TN 68 86 60 84 / 70 20 10 10.
Well above normal temperatures and dry weather will continue across central California this week as high pressure strengthens over the region.
1051 PM EDT MON JUN 27 2016 High pressure will build over the mid section of the country as a cold front moves from the Ohio Valley to the east coast. An upper level trough of low pressure will pass east through the Great Lakes region Tuesday and Tuesday night.
Hot weather along with a weak short wave trough in the southwesterly flow aloft generated convective clouds in the Blue Mountains in Oregon and the central mountains in Idaho. The short wave trough will exit our area tonight, leaving Tuesday sunny and hot but with less convective potential than today, which wasn't much anyway.
733 PM EDT MON JUN 27 2016 A cold front moves through the area kicking off heavy rain showers into this evening. A reinforcing cold front moves through Tuesday. Cooler for the remainder of the week. Despite the high clouds overhead. Upper level trough moving through during the short term, but behind the cold front moisture should be somewhat limited.
721 PM EDT MON JUN 27 2016 A weak cold front will cross the region tonight with a chance of showers and possibly an isolated thunderstorm through Tuesday.
741 PM EDT MON JUN 27 2016 High pressure will build over the mid section of the country as a cold front moves from the Ohio Valley to the east coast. An upper level trough of low pressure will pass east through the Great Lakes region Tuesday and Tuesday night.
1038 PM MDT MON JUN 27 2016 Elongated ridge will dominate these periods, centered near the Four Corners. Initially this moisture looks to be in the mid- upper levels so the lowest elevations will still have dewpoints in the 30s with little rain expected to reach the ground. Meanwhile an inverted trough over southern California will slowly work northeastward around the western edge of the ridge into the western Great Basin.
1007 PM EDT MON JUN 27 2016 A cold front will approach from the west tonight and into Tuesday. The cold front will continue to push closer to the region and guidance pops increase after midnight to the morning hours. Overnight lows should be in the lower to middle 70s. A weak cold front over the western Appalachians will move into the forecast area on Tuesday while a secondary cold front approaches from the west.
High pressure over the region will result in continued very warm and dry inland conditions through midweek. Upper level high is centered over the Utah-Arizona border.
1134 PM EDT MON JUN 27 2016 A cold front will move slowly across the area today and Tuesday. High pressure will bring a period of drier weather for mid week. Prefrontal sfc trof separates 70F dewpoints over the ridge and valley region of central PA from 58F to 60F dewpoints over the west central mountains this evening. Upper trof swinging into the eastern GLAKS is nudging a sfc cold front eastward which should reach the Lake Erie shore shortly. Slow moving upper trof/sfc cold front pushes into the northwest mountains in the pre dawn hours. Key point is most of the day the low-level temperature guidance is near and slightly above normal.
713 PM EDT MON JUN 27 2016 A cold front will move through the forecast area tonight. A large area of high pressure will build over the region through the middle part of the week.
1150 PM CDT MON JUN 27 2016 Quiet weather is expected across central and southeast Illinois overnight as high pressure begins to build into the area. Noticeably cooler and less humid air will also spread into the region on northerly winds. Cooler and drier air will push into Illinois overnight. A few clouds may spread over east central Illinois by sunrise but otherwise clear skies and slightly cooler than normal lows can be expected. 500 mb trof axis to shift to our east Tuesday morning allowing cooler and much drier air to filter across the forecast area during the day.
636 PM CDT MON JUN 27 2016 Cooler and drier air will push into Illinois overnight. A few clouds may spread over east central Illinois by sunrise but otherwise clear skies and slightly cooler than normal lows can be expected. 500 mb trof axis to shift to our east Tuesday morning allowing cooler and much drier air to filter across the forecast area during the day.
A broad upper level trough was located across the upper Great Lakes and will amplify as it digs southeast across lower MI. Tonight, The mesoscale models are showing two thunderstorm complexes developing across the high plains of eastern CO and western NE. Upslope flow across the higher terrain of northeast CO, eastern WY and the western NE panhandle will cause scattered thunderstorms to develop and these storms will organize into an MCS late Tuesday afternoon across the central high plains.
1010 PM EDT MON JUN 27 2016 Update A cold front will be pushing in from the northwest tonight. Much cooler air will settle into Lower Michigan behind the front on Tuesday.
759 PM EDT MON JUN 27 2016 Aviation A cold front will be pushing in from the northwest tonight. Much cooler air will settle into Lower Michigan behind the front on Tuesday.
1134 PM CDT MON JUN 27 2016 Much quieter weather this afternoon than the past coupe of days as high pressure builds southward across the region. This will push a reinforcing cold front down through at least the northern 1/2 of our CWFA by 12Z Tuesday.
Outflow from the storms near the cold front pushed south and is nearing LFK-GRK line at 00z. Upper ridge builds in from the west over the holiday weekend which should suppress precip chances, but allow for climbing temperatures. A weak cold front will approach the waters Tuesday and stall out near or off the coast Tuesday evening.
618 PM CDT MON JUN 27 2016 Mid level impulse continues to move southeast across the Northern Plains which has allowed a weak surface cold front to move southeast across the CWA. Otherwise, cooler high pressure will build south across the Northern Plains overnight and into the day Tuesday before return flow sets up to our west Tuesday evening.
A few showers and thunderstorms however affected some of the island communities of the Lower Keys this afternoon and almost a quarter of an inch fell at the Key West International Airport in one hour. A high pressure over the northern central Atlantic this evening will stay in place for most of the remainder of the work week. As a consequence, a ridge will extend westward reaching the Florida Peninsula and Keys.
The winds through out the column are N/NW now which is backing the ridge westward. as a cold front moves into the area. /issued 408 PM CDT MON JUN 27 2016/ Subtle signs of the weakening upper level ridge still holding over east Texas as convection is being steered nearly clockwise with a gap in coverage along the I-20 corridor of NE TX/NW LA where the ridge axis has held firm. Upper ridge will continue a slow retreat to the west as the front slowly works in from the N/NE, aiding in the development of additional showers and storms overnight through Tuesday before gradually diminishing through Tuesday night.
859 PM CDT MON JUN 27 2016 Quiet weather is expected across central and southeast Illinois overnight as high pressure begins to build into the area. Noticeably cooler and less humid air will also spread into the region on northerly winds. Cooler and drier air will push into Illinois overnight. A few clouds may spread over east central Illinois by sunrise but otherwise clear skies and slightly cooler than normal lows can be expected. 500 mb trof axis to shift to our east Tuesday morning allowing cooler and much drier air to filter across the forecast area during the day.
730 PM MST MON JUN 27 2016 High pressure will move somewhat north and east of Arizona this week allowing warm temperatures to prevail, but also bring a couple of weather disturbances through the state.