Aikyam-Lab/Synoptic-Bench huggingface dataset:
102 PM EDT Thu Sep 28 2017 Much cooler air will move in behind a cold front through tonight.
As a mid to upper level trough west of the Florida peninsula drifts westward, at the surface, an elongated trough will lift across Cuba and likely become more defined east of Florida this weekend.
346 PM EDT Thu Sep 28 2017 High pressure builds in from the west through Friday.
304 PM CDT Thu Sep 28 2017 Wave continues east taking with it the limited cloud cover and replaced by high pressure nosing out of Canada. This high will continue east/southeast into the Western Lakes region for Friday. We begin to see return flow around the high with southeast winds and a breeze setting up due to an increasing pressure gradient (up to 10mb across the state by 00Z). Temperatures will be cooler with less favorable mixing for Friday as well.
An upper trough will slide through the Upper Great Lakes tonight. The HRRR model keeps showing showers developing within the 850mb thermal ridge toward southeast WI and then track into south central WI later this evening. Temperatures will be cooler than today, with highs in the mid 60s.
405 PM EDT Thu Sep 28 2017 After a long stretch of summer like weather, a cold front has moved through with more seasonal weather behind it. A second shot of cooler air will arrive Friday as an upper level disturbance drops in from the Great Lakes. Weak ridging builds into air with clear skies and light winds.
151 PM EDT Thu Sep 28 2017 Aviation Mainly dry conditions are expected today as a ridge of high pressure moves through the region. Tonight a cold front will move into the area bringing with it the chance for rain showers. High pressure will build back in for the weekend with dry weather forecast.
An upper level ridge over the western U. will continue to shift east due to the approach of a Gulf of Alaska trough. Clear skies today with increasing mid and high level clouds overnight as a cold front approaches the region from the west. Cloudy skies Friday with scattered showers spreading eastward late Friday with a cold frontal passage.
High pressure will drift east across Montana tonight through Friday for continued mild and dry conditions.
409 PM EDT Thu Sep 28 2017 Cooler and drier air has continued to slowly filter into eastern Kentucky this afternoon, but not quite as fast as previously expected. With lows expected to fall well under current dewpoints tonight (into the low to mid 50s), should see a good deal of fog develop, mainly in the river valleys. A secondary dry cold front will push across the area late tomorrow with a slightly better push of drier air. This will lead to an even cooler Friday night with lows well into the 40s in many areas.
330 PM CDT Thu Sep 28 2017 Upper low continues to spin over the 4 corners this afternoon. Mid level ridge builds over eastern Kansas tonight through Friday while the upper low moves northeast into Wyoming. Lows tonight will drop into the lower 50s. Highs Friday will be a few degrees warmer than today with highs in the mid and upper 70s with the cooler readings in north central Kansas.
140 PM EDT Thu Sep 28 2017 A dry cold front will approach from the north, drifting across central NC late this afternoon through tonight. Weak high pressure will follow and extend across the middle Atlantic states through Fri night. Another unseasonably warm/hot afternoon expected across central NC as ridging in the mid/upper levels continues to warm the atmosphere.
248 PM EDT Thu Sep 28 2017 A cold front will move through from the northwest this evening, then stall to the south.
The upper low over Utah was slowly migrating to the north this afternoon, with brisk south to southwest flow aloft spreading across the state. Models indicate that the upper low will continue to slowly move north to northeast up across the northern Rockies over the next 24 hrs. High pressure at the sfc will remain in place over the central plains, keeping llvl easterly flow in place for eastern CO. Shower and thunderstorm activity will fire back up tomorrow by midday, especially over the higher terrain and I-25 corridor.
A cold front is expected to push through most taf sites between 00z and 09z Friday and this early timing will impede radiational fog development Friday morning.
335 PM CDT Thu Sep 28 2017 The upper level low across the Cntl Rockies is forecast to move very slowly north tonight and be located across WY Friday. Cloud cover and the stronger south winds across Swrn Neb should limit vertical mixing and hold down highs in that region to the low to mid 60s.
129 PM EDT Thu Sep 28 2017 High pressure builds in from the west this afternoon and remains over the region through Friday.
Latest satellite loops continue to show a broad upper low over the eastern gulf progged to drift WSW through the next 24 hours. At the surface weak high pressure will continue over the central gulf states and forecast area through Fri afternoon becoming reinforced late Fri night into Sat in the wake of a weak cold front that stalls near the coast or just offshore early Sat.
129 PM EDT Thu Sep 28 2017 High pressure will result in dry conditions and more seasonable temperatures today. Highs on Friday will generally be in the lower 70s.
219 PM CDT Thu Sep 28 2017 Well, what more can you say than "Big bubble, no trouble" for the entire short term as a large dome of high pressure works its way southeast out of southern Canada into the Great Lakes and upper Ohio Valley regions. Overnight lows will generally fall off into the upper 40s to the lower half of the 50s.
The weekend will be much cooler and breezy, with a few showers. Tonight through Friday night: High pressure will remain in place tonight promoting clear skies and weak easterly winds. A cold front will push across the region Friday night. Friday will be our last day of the week, and potentially for the season, where we will see temperatures in the 70s to low 80s as the cold front will usher in a much cooler air mass.
229 PM MDT Thu Sep 28 2017 High pressure will drift east across Montana tonight through Friday for continued mild and dry conditions.
126 PM EDT Thu Sep 28 2017 Dry and cooler weather is expected today under building high pressure. Shower chances return with a Friday cold front.
342 PM CDT Thu Sep 28 2017 Technically a weak cold front has passed through most of the area, and is currently located near the coast of Southeast Louisiana.
403 PM EDT Thu Sep 28 2017 Much cooler and more seasonable temperatures will be with us through the weekend.
352 PM EDT Thu Sep 28 2017 Much cooler air will continue moving into the region overnight on breezy northwest winds.
223 PM CDT Thu Sep 28 2017 A dampening synoptic ridge and broad troughing on the northern flank of this ridge has resulted in a slow dry frontal passage today. The forecast for tonight will mainly be focused on dry and cooler air finally arriving behind the front that already passed over the TN Valley.
650 PM EDT Thu Sep 28 2017 High pressure will keep dry weather over the region tonight.
240 PM MDT Thu Sep 28 2017 Latest upper analysis shows a Rex block over the western Conus with a low pressure system over the four corners region and a ridge to the north. At the surface, high pressure was located over most of the Canadian and US plains states. The upper low will gradually move northward tonight and then will swing northeastward across the forecast area on Friday night as it become embedded in the next upper trough approaching from the west. The sfc pressure gradient will tighten on Friday aftn as a lee trough develops supporting breezy areas.
541 PM EDT Thu Sep 28 2017 High pressure builds in from the west through Friday.
351 PM EDT Thu Sep 28 2017 Much cooler air will continue moving into the region overnight on breezy northwest winds.
340 PM EDT Thu Sep 28 2017 High pressure will keep dry weather over the region tonight.
A weak cold frontal boundary is making its way south across the forecast area at mid afternoon.
440 PM EDT Thu Sep 28 2017 High pressure builds in from the west through Friday.
Warm air and moisture advection as seen in the 850-700mb theta-e axis out ahead of this upper trough axis will stream across lower Michigan. The greater thunderstorm chances will remain over Lake Huron due to the cold airmass moving over the warmer waters creating some more instability. The positively tilted trough axis will move through the area tomorrow and put Michigan under the influence of the left entrance region of the upper level jet. Isolated showers and thunderstorms will remain possible throughout Friday afternoon as a secondary push of cooler air is shoved southward behind a cold front with breezy north to northeasterly flow.
111 PM CDT Thu Sep 28 2017 At 1 PM, a short wave trough was located over northern Minnesota. On Friday, high pressure will build across the area.
Surface cold front also easily depicted by wind shift and brief gusts over far northwest wisconsin. There have been some diurnal cold poo aloft type showers that developed well behind the front over north central MN, but these should dissipate very rapidly as the lower sun. High pressure will bring a sunny but coolish fall day on Friday.
At the surface, cold front has pushed down to near the Gulf coast with weak high pressure situated over the high Plains. Upper low near four corners region will continue lifting northeast tonight into Fri and by 00z Sat will be situated over central WY. This setup will keep mid level moisture transport in place across the high Plains through Sun morning, with Sat night looking like the most widespread activity, as some jet energy starts to directly impact the area. Upper trough out west will get further reinforced as yet another piece of energy dives into the Central Great Basin on Sun night into Mon.
501 PM EST Tue Feb 6 2018 Moisture will be on the increase tonight in an onshore flow on the backside of offshore high pressure and ahead of a cold front approaching from the west. The cold front will move through the area Wednesday evening.
For 00Z Aviation discussion below Clouds increasing out ahead of the next trough. The trough exits the area through early Wednesday morning and we expect clouds to erode from west to east during the morning/afternoon.
An approaching cold front will bring IFR to LIFR cigs and vis by 06Z tonight for KCKV, with these conditions spreading across mid- state terminals and reaching KCSV by 10Z.
Increasing southwest winds on Wednesday will bring warmer air to all but eastern portions of the Hi-Line.
Conditions will be improving from the W/NW as cooler/drier air filters into the area in the wake of a cold front.
330 PM MST Tue Feb 6 2018 The upper level trough that moved through last night and this morning has exited the region. Now that the trough has shifted eastward, we will know experience more showery-type precipitation. The NAMNEST has been the model of choice today and it's showing that by this evening most showers will have ended except for the highest peaks of the Park Range where some light snow may continue. For tomorrow, a return to what we've seen before the trough moved through. High pressure remains to our west as we see northwesterly flow. The high pressure to our west also stays fairly stationary so the warm temperatures and variable cloudiness also continues.
1034 PM EST Tue Feb 6 2018 The mean layer ridging is centered just south of Florida, lending to the broad expanse of dry air over the western Caribbean apparent on water vapor imagery. The 00Z KKEY RAOB sampled rising heights at all levels as the ridge builds north and expands. High pressure centered near Nova Scotia stretches southwest across the western North Atlantic and the Florida Peninsula. Temperatures are in the lower to mid 70s with dewpoints near 70. The forecast is on track and expects only slight rain chances across the island chain with overnight lows in the lower 70s.
Tonight Through Wednesday Obviously the primary concern is the impending winter weather in the form of freezing rain this afternoon through the overnight hours. Digging into the details here, regional surface observations show sub-freezing air still in place from the Fayetteville region eastward through Walnut Ridge in northeast Arkansas - that is essentially those counties bordering Missouri. ) The forecast reflects these things, and features either rain or freezing rain only at this time. Furthermore, given that dewpoints are at or above the freezing mark in most places outside of the sub-freezing air in northern Arkansas, expect there will likely be a fairly stark cutoff between areas receiving freezing rain accumulations and those not. Wednesday night through Tuesday High pressure will be building into the region in the wake of the storm system that brought the ice and rain to the area.
High pressure will remain in control of the weather across South Florida tonight bringing mainly dry conditions to the area. Dry weather will continue tomorrow with temperatures rising into the lower 80s during the afternoon. /issued 334 PM EST Tue Feb 6 2018/ High pressure will continue to dominate the weather across South Florida tonight and a cold front will remain stalled out just to the south of the region. High pressure will continue to remain in place for the middle to the end of the work week. As the ridge continues to expand to the north, it will help to lift the previously stalled frontal boundary back up to the north as well.
503 PM MST Tue Feb 6 2018 The upper level trough that moved through last night and this morning has exited the region. Now that the trough has shifted eastward, we will now experience more showery-type precipitation. The NAMNEST has been the model of choice today and it's showing that by this evening most showers will have ended except for the highest peaks of the Park Range where some light snow may continue. For tomorrow, a return to what we've seen before the trough moved through. High pressure remains to our west as we see northwesterly flow. The high pressure to our west also stays fairly stationary so the warm temperatures and variable cloudiness also continues.
Northwest flow aloft increases tonight while moisture decreases overall, but a few light snow showers will persist along the continental divide and mountains of central and southwest MT with another area of very light snow possibly developing across eastern portions of North central MT late tonight as some warmer air aloft arrives from the west. However, models continue to indicate a fairly rapid development of the lee-side trough later tonight and subsequent erosion of the cold air from western and southern portions of north-central MT. Expected lee-side trough development should also bring a quick increase in winds to areas along the Rocky Mtn Front later tonight with potential for blowing/drifting snow impacts, which is highlighted in the Winter Weather for that area. Increasing southwest winds on Wednesday will bring warmer air to all but eastern portions of the Hi-Line.
Surface winds will be more variable at KLFK until the low and associated front moves through returning the winds to Northerly 10-15 knts as the other sites across East and Northeast Texas, Southwest and South Central Arkansas and Northwest and North Central Louisiana sites. Meanwhile, frzg lvls lowering with elevated trough along and north of I-20, where discrete storms with high reflectivities bringing an uptick in both ltg activity and hail reports.
High pressure ridge to our north will sink a little to the south, but onshore low level winds will be maintained. High pressure center will shift away from the eastern seaboard while a ridge axis settles into the waters on Wed.
Expect generally light north winds after 0800Z at all our TAF sites, along with VFR conditions, as high pressure moves into the southern Plains from the north-northwest. /issued 401 PM CST Tue Feb 6 2018/ Primary forecast issue is the ongoing freezing rain/drizzle event. Temperatures will remain below freezing with a warm (>0C) layer aloft, so freezing rain will be the dominant precipitation type. Farther northwest, closer to I-44, some freezing drizzle or light freezing rain can't be ruled out--especially across the southeast parts of the Oklahoma City metro (i. Forecast soundings for this evening indicate there might be a tight gradient of low-level saturation with soundings in Purcell indicating the potential for freezing drizzle while soundings in OKC suggesting a low chance for freezing drizzle.
946 PM CST Tue Feb 6 2018 Areas of freezing drizzle and light freezing rain continue across parts of eastern Oklahoma and northwest Arkansas, generally to the southeast of Interstate 44.
908 PM EST Tue Feb 6 2018 High pressure will move across the area tonight. Low pressure will approach later Wednesday then track through the Gulf of Maine Wednesday night.
Low pressure should lift northeast along a stalled frontal boundary stretched from the Arklatex northeastward across north Mississippi into middle Tennessee. Temperatures in these areas should drop below freezing early this evening and into the upper 20s later tonight. Further southeast across portions of eastern Arkansas into northwest Tennessee, rain will gradually change over to freezing rain after midnight as temperatures drop to at or just below freezing. Temperatures should remain above freezing in these locations through the night. Precipitation should come to an end from east to west on Wednesday morning, but hazardous travel may continue through the day across northern locations that receive significant icing and temperatures hover around freezing through the day. Freezing rain is expected over portions of northeast Arkansas, the Missouri bootheel and extreme northwest Tennessee overnight.
400 PM MST Tue Feb 6 2018 An upper trough of low pressure covers the Rocky Mountain Region, with a weak northwesterly flow aloft over Colorado. As a result, areas of light snow should continue across the high country overnight, mainly over the higher peaks. This pattern should also produce gusty west to northwesterly winds over the higher mountain passes and higher foothills, especially from late tonight into Wednesday morning. Snow is expected to end across the high country Wednesday morning as drier air moves into Colorado from the northwest. The plains should remain dry through the period, with warmer temperatures expected on Wednesday.
517 PM EST Tue Feb 6 2018 High pressure will move across the area tonight. Low pressure will approach later Wednesday then track through the Gulf of Maine Wednesday night.
The higher terrain in northeast TN could see gusts up to 50 mph. Further south in the higher elevations of east TN. so kept the High Wind Warning in effect until 10 am as well. Chattanooga Airport, TN 47 57 28 52 / 90 100 0 0 Knoxville McGhee Tyson Airport, TN 41 55 26 47 / 90 100 10 0 Oak Ridge, TN 42 51 26 48 / 90 100 10 0 Tri Cities Airport, TN 39 52 24 45 / 80 100 20 0 TN.
Cooler temperatures along with the possibility of some snow showers are on tap for the weekend.
556 PM CST Tue Feb 6 2018 00Z TAFS Scattered showers and a few thunderstorms will continue to move across the area this evening in the vicinity of a warm front draped across central Louisiana. Showers and thunderstorms will increase further after midnight as a cold front slowly approaches the area. Water vapor imagery continues to show us in a wswrly flow aloft with a longwave trof axis over the wrn CONUS. Showers and the occasional storm will continue until early tomorrow when the trof out west pushes ewd and helps shove the front through the area. With the early arrival of the front across the nrn zones, the temperatures are not forecast to rise much tomorrow, topping out in the lower 50s.
1038 PM EST Tue Feb 6 2018 Moisture will be on the increase tonight in an onshore flow on the backside of offshore high pressure and ahead of a cold front approaching from the west. The cold front will move through the area Wednesday evening.
401 PM CST Tue Feb 6 2018 Primary forecast issue is the ongoing freezing rain/drizzle event. Temperatures will remain below freezing with a warm (>0C) layer aloft, so freezing rain will be the dominant precipitation type. Farther northwest, closer to I-44, some freezing drizzle or light freezing rain can't be ruled out--especially across the southeast parts of the Oklahoma City metro (i. Forecast soundings for this evening indicate there might be a tight gradient of low-level saturation with soundings in Purcell indicating the potential for freezing drizzle while soundings in OKC suggesting a low chance for freezing drizzle.
Now that the low clouds have shifted eastward, expect that few low and high level clouds will continue for the next 6 to 12 hours.
Locally breezy northeast winds tonight and Wednesday with slightly cooler temperatures.
As the higher dewpoint air passes over the relatively cooler waters, sea fog is expected to develop along the coast.
18Z surface data has high pressure over the western Great Lakes and upper Mississippi Valley.
552 PM CST Tue Feb 6 2018 Water vapor satellite this afternoon shows a couple of short wave troughs that will impact the area tonight. This will set up a bit more of a zonal flow which will have the potential to bring several fast moving short wave troughs across the region.
High pressure will prolong mild and dry weather through the weekend. A combination of high pressure and easterly winds has resulted in an exceptional day across northwest California with mostly clear skies and mild temperatures. Stratus with patchy fog should return to Humboldt Bay and some interior valleys again tonight, although, east winds will limit the extent and duration of the low clouds around Humboldt Bay. Then another nice day is expected again Wednesday with ridging expected to hold over the eastern Pacific Ocean.
Locally breezy north winds tonight and Wednesday with slightly cooler temperatures.
and winds of up to 50-60 mph in the higher elevations in east TN. The Wind Advisory is now expanded through the higher elevations in NE TN. Chattanooga Airport, TN 47 57 28 52 / 90 100 0 0 Knoxville McGhee Tyson Airport, TN 41 55 26 47 / 90 100 10 0 Oak Ridge, TN 42 51 26 48 / 90 100 10 0 Tri Cities Airport, TN 39 52 24 45 / 80 100 20 0 TN.
Chattanooga Airport, TN 47 57 28 52 / 90 100 0 0 Knoxville McGhee Tyson Airport, TN 41 55 26 47 / 90 100 10 0 Oak Ridge, TN 42 51 26 48 / 90 100 10 0 Tri Cities Airport, TN 39 52 24 45 / 80 100 20 0 TN.
617 PM EST Tue Feb 6 2018 Moisture will be on the increase tonight in an onshore flow on the backside of offshore high pressure and ahead of a cold front approaching from the west. The cold front will move through the area Wednesday evening.
There is a chance for some freezing rain to impact the KABI terminal late tonight and into the morning hours. A cold front will move into the region and the clouds will quickly dissipate behind the front. /issued 255 PM CST Tue Feb 6 2018/ (Today and Tonight) An approaching disturbance moving in from the west combined with the recent cold frontal passage will result in a chance for freezing rain and drizzle across the area. Some icing on elevated surfaces such as bridges and overpasses is possible late this evening into Wednesday morning. Additional shower activity is possible late this evening and into Wednesday morning with temperatures at or just below freezing. Otherwise, low temperatures in the mid 20s across the Big Country to just above freezing along the Interstate 10 corridor are anticipated.
For 06Z Aviation discussion below Clouds increasing out ahead of the next trough. The trough exits the area through early Wednesday morning and we expect clouds to erode from west to east during the morning/afternoon.
slight corrections were applied to the next 3 to 4 hours on temperatures as the Downslopes of the Little Rockies and Little Snowies were both warmer than previously anticipated.
/issued 412 AM CDT Wed May 24 2017/ Cold front slowly making its way through the area this morning. Strong short wave moving out of the base of the upper trough as well. But strong dry air intrusion from 850mb up is coming in ahead of the actual cold front.