Aikyam-Lab/Synoptic-Bench huggingface dataset:
Low pressure off to the west has been enhancing shower activity across the area. Warmer than usual 500mb temperatures (-3.
1147 AM MDT TUE JUL 26 2016 18Z TAF CYCLE Upper high to relocate over the Great Basin during the next 24 hours with subsequent changes in winds aloft.
349 PM EDT TUE JUL 26 2016 Atlantic high pressure will prevail through much of the week while a weak trough persists inland. Strong and persistent deep layered ridging is persisting across the forecast area.
631 PM EDT TUE JUL 26 2016 Atlantic high pressure will prevail through much of the week while a weak trough persists inland. It will remain warm and humid with lows ranging from the mid 70s inland to the lower 80s at the beaches, Downtown Charleston and around Lake Moultrie.
Luckily, humidity should mix out again today as dewpoints drop into the lower to mid 60s this afternoon. Given the low prob, no precip was included for the afternoon period with VFR conds prevailing well into Wed.
Weak upper level short wave trough moving eastward along it this evening. Hiked PoPs into this evening with thunderstorm complex associated with weak upper level short wave trough rolling through.
1235 PM CDT TUE JUL 26 2016 It will be another warm and humid day across the Northland, with highs in the lower 80s, despite a subtle cold front which will slowly move through the Northland today and tonight as high pressure in Canada noses into the Northern Plains and northern Minnesota. Wednesday looks a little cooler and cloudier, with highs in the middle to upper 70s. Cool easterly flow will develop from Lake Superior, and the diffuse cold front will likely shift south of the forecast area, or near the far southern forecast area. Northwest flow aloft will help push the frontal boundary further south Wednesday night as high pressure over Manitoba/northwest Ontario pushes further south.
329 PM CDT TUE JUL 26 2016 An upper level 594 decameter high pressure system sitting over the 4 corners region will continue to provide east to northeast flow across the Panhandles. In-conjunction with a south to southeast surface flow that will bring higher Td's to the region, latest 26/12Z shows diurnally driven convection with any localized convergent boundaries across the Panhandles with the best chances across the eastern Panhandle with the highest moisture values.
1014 PM EDT TUE AUG 30 2016 High pressure will keep it warmer than normal and mainly dry into Wednesday.
/issued 230 PM CDT TUE AUG 30 2016/ An upper level ridge of high pressure over the Mid South this afternoon has kept hot. The upper ridge will break down on Wednesday as a stronger upper level trough digs across the Northeast and Mid Atlantic States. This trough will serve two purposes as it will send a cold front south towards the area as well as deflect the Gulf tropical system towards the northeast and away from our forecast region.
1044 PM EDT TUE AUG 30 2016 High pressure moves offshore tonight.
Very weak flow is present over northeast Colorado this afternoon as a decaying upper level low drifts northeastward. Weak subsidence is moving in Wednesday evening as ridge axis slowly builds in from the north.
958 PM EDT TUE AUG 30 2016 High pressure will keep it warmer than normal and mainly dry into Wednesday.
Better chances for precip will be seen across the NRN portions of the state as a cold front pushes south into the state.
Most models still point to additional development late tonight across far west central and northwest Oklahoma as eastern Colorado upper low gets sheared out over Kansas. Most of the convection will dissipate by mid evening, but may continue overnight in west central and northwest Oklahoma as a weak mid-level trough moves across eastern Colorado and western Kansas.
737 PM EDT TUE AUG 30 2016 High pressure will keep it warmer than normal and mainly dry into Wednesday.
802 PM CDT TUE AUG 30 2016 Overall a quiet and dry forecast in store tonight as surface and upper ridging are situated over the area. Expect mostly clear skies tonight due to the dry air and ridging. Water vapor imagery shows some slightly drier air aloft rotating in around in the low level easterly flow.
1031 PM EDT TUE AUG 30 2016 Weak high pressure today. Cold front slides through Wednesday night. Drier and cooler weather to end the week. Some showers and thunderstorms developing this afternoon across an axis of a theta e ridge in the West Virginia Mountains. Skies will clear out tonight with weak high pressure remaining overhead. overall it should remain mostly dry with a cold front approaching the region from the northwest in the afternoon.
mainly in the Delta and over ridgetops. Large upper low off the B. coast with associated trough extending along 130 W will be main synoptic feature through the week.
A ridge of high pressure currently over the Great Basin will shift east tomorrow. An upper level trough of low pressure will move across the region this weekend. Upper level ridge in place over the eastern Great Basin and Rocky Mountain region this evening with an upper level trough along the west coast. Models indicate a fair amount of mid level moisture will continue to move northeast toward the ridge axis overnight which will keep partly to mostly cloudy skies across portions of northern Utah. Mid level thermal ridge remains in place over Utah on Wednesday and will result in afternoon high temperatures near record values along portions of the Wasatch Front.
(Issued 219 PM CDT TUE AUG 30 2016) 2PM observations are coming in with temps in the lower 90s and dew points in the middle 60s with a few locations in the lower 60s. Any showers/storms should dissipate quickly with sunset with a dry night ahead and lows in the lower 70s. An upper low develops north of the Great Lakes with a cold front draped across the central midwest. Ahead of that, a weak trough will move south towards the area Wednesday afternoon. Highs on Wednesday will still be able to reach the lower to middle 90s as most of the area will be under mostly sunny skies. Lows will be in the lower 70s.
High pressure in the wake of this system will provide cooler and drier conditions for the area late in the week and into the weekend. Main focus in the short term will be Wednesday as the cold front moves through the area. High pressure will move into the area in the wake of the front, which will move significantly drier air into the region and bring a break from the recent oppressive heat and humidity.
734 PM EDT Tue Aug 30 2016 Clouds will be on the increase across the north country overnight, as a cold front approaches from Ontario. On Wednesday, a cold front will move south from Canada and will bring rain showers to the region, along with a chance for thunderstorms, especially during the afternoon.
800 PM PDT TUE AUG 30 2016 High pressure aloft will continue very warm weather just inland from the coast through Wednesday, then cooler into the Labor day weekend as a low pressure trough develops over the West Coast. Surface pressure gradients showed onshore trends, but remained weak offshore from NV and 6-7 MBS onshore KSAN to the lower deserts. A coastal eddy has formed and should linger into Wednesday, keeping coastal areas cooler into Wednesday, while inland areas remain quite warm.
948 PM EDT TUE AUG 30 2016 A cold front will move south across the area late tonight and Wednesday followed by a secondary cold front Wednesday night.
701 PM EDT Tue Aug 30 2016 Clouds will be on the increase across the north country overnight, as a cold front approaches from Ontario. On Wednesday, a cold front will move south from Canada and will bring rain showers to the region, along with a chance for thunderstorms, especially during the afternoon.
Coverage of thunderstorms will increase even further on Wednesday as a cold front slides south through the Ozarks. High temperatures will be cooler with the passing front and expected coverage of thunderstorms. Highs will generally be in the lower to middle 80s. Fabulous late summer weather is then expected to end the week as Canadian high pressure builds into the region.
Most showers and a couple of thunderstorms have formed mainly east of the Seven Mile Bridge, where potential buoyancy might be a little higher, farther away from the warm-core center of the tropical cyclone. Current air temperatures in most Keys island communities remain mostly in the lower 80s, with dewpoint temperatures in the mid 70s. Breezy to windy conditions will persist, with the higher wind speeds west of the Seven Mile Bridge.
653 PM CDT TUE AUG 30 2016 Weak cold front is slowly approaching Central Illinois, with slightly cooler and drier air behind it.
An upper ridge will continue to build along into the northern and Canadian plains over the next few days. As the ridge amplifies the hot desert air- mass will filter north through the local area and into Canada.
1149 PM CDT TUE AUG 30 2016 The weak trough aloft has settled into the mid Missouri River valley, with ample environmental tropical moisture in place across the southern half of the forecast area. The trough will drift southward tonight into early Wednesday, with drier higher pressure building in from the north.
534 PM MDT TUE AUG 30 2016 Upper level analysis has ridge over the western CONUS with trof off the west coast. At the surface, high pressure is located across North Dakota with a weak boundary across the area. Upper ridge remains over the northern Plains with mainly clear and dry conditions expected. Upper ridge will hold through the day with mostly sunny skies and warm conditions persisting.
(Issued 949 PM CDT TUE AUG 30 2016) Quiet night underway across the cntrl TN Valley this Tue evening, as an upper ridge controls the overall wx pattern over the SE region. Temp trends have mainly fallen into the 70s, although a few locations remained in the lower 80s, including the KHSV airport. 09 For 06Z TAFs: With high pressure in place over the region at the sfc and aloft, VFR conds are generally xpcted through the TAF period.
an upper level low just off the Southern Texas Gulf coast will continue to generate showers and thunderstorms. /issued 234 PM CDT TUE AUG 30 2016/ SHORT TERM (Now through Wednesday Night): forecast details through the period to be driven by the movement of the mid/upper level low currently situated over the northwest Gulf. For tonight, as well as the remainder of the forecast period, will see the low over the Gulf slowly sink southward and fill/weaken.
920 PM EDT TUE AUG 30 2016 A quiet evening across the eastern Tennessee Valley and the Southern Appalachian region with high pressure still in control. Chattanooga Airport, TN 71 94 72 91 / 10 20 10 40 Knoxville McGhee Tyson Airport, TN 71 92 70 87 / 10 30 10 40 Oak Ridge, TN 71 93 70 87 / 10 20 10 50 Tri Cities Airport, TN 67 89 66 82 / 10 30 20 50.
946 PM CDT TUE AUG 30 2016 Cold front draped just northwest of a Freeport to Quad Cities to Washington axis at 9 pm, and will continue to sag southward through rest of cwa tonight. Lows could be a few degrees cooler into the upper 50s north, but this will depend on how much thinning or clearing takes place, as satellite suggests some more high cloudiness to move in overnight. Upstream energy shows a large early fall Canadian high pressure to overspread the entire region tonight and Wednesday bringing splendid early fall weather. Highs should be cooler, within a couple degrees of normal with upper 70s north to lower 80s south.
700 PM CDT TUE AUG 30 2016 The weak trough aloft has settled into the mid Missouri River valley, with ample environmental tropical moisture in place across the southern half of the forecast area. The trough will drift southward tonight into early Wednesday, with drier higher pressure building in from the north.
Weak cold front is slowly approaching Central Illinois, with slightly cooler and drier air behind it.
719 PM EDT TUE AUG 30 2016 Weak high pressure today. Cold front slides through Wednesday night. Drier and cooler weather to end the week. Some showers and thunderstorms developing this afternoon across an axis of a theta e ridge in the West Virginia Mountains. Skies will clear out tonight with weak high pressure remaining overhead. overall it should remain mostly dry with a cold front approaching the region from the northwest in the afternoon.
Water vapor imagery continues to show an upper level low over the Southern Texas Gulf waters this evening. There is still some uncertainty about the movement of the upper low. an upper level low just off the Southern Texas Gulf coast will continue to generate showers and thunderstorms. /issued 234 PM CDT TUE AUG 30 2016/ SHORT TERM (Now through Wednesday Night): forecast details through the period to be driven by the movement of the mid/upper level low currently situated over the northwest Gulf. For tonight, as well as the remainder of the forecast period, will see the low over the Gulf slowly sink southward and fill/weaken.
A tropical cyclone is forecast to develop in the Gulf of Mexico and move NE across North Florida and offshore the Carolina coast mid to late week. Behind the cyclone, drier and cooler high pressure will build into the region for the weekend. Overnight lows will be mainly in the lower to mid 70s. A surface and upper level low remains near the coast Wednesday. Weak short wave troughs rotating around upper level low may trigger scattered showers and thunderstorms at times.
A low pressure trof will move over the West Coast tonight and Central and Southwest Montana will remain underneath unsettled southwest flow aloft.
/issued 403 PM CDT TUE AUG 30 2016/ Latest WV imagery shows two items of interest near the Gulf region, the upper low near the TX coast and TD9 moving nw acrs the sern Gulf of Mexico. Deep ely winds between the upper low and a ridge cntrd acrs cntl portions of the MS valley was bringing drier air into the region. Overall, conditions have been rather nice today with partly to mostly sunny skies, temperatures in the lower to middle 90s and relative humidities around 50 percent. An amplified pattern is fcst to develop acrs the CONUS through the week as a deep ridge builds acrs the srn and cntl plains behind a digging trough over the ern states.
A cold front will slowly move inland tonight and Wednesday for a little rain.
/issued 331 PM CDT TUE AUG 30 2016/ (Tonight and Wednesday) Currently, there is an upper low near the TX Gulf Coast, with anticyclonic flow centered near northeastern OK/southern MO. The weak low just off the TX coast is expected to slide slightly farther south while the ridge to our northeast expands its influence farther south and west into our region.
A broad upper level trough continues to slowly migrate eastward toward the west coast. As it is doing this weak waves are rotating around the base of the trough and then moving northeast across the region. There were numerous showers and a few thunderstorms but most of the precipitation did not reach the ground due to the lower atmosphere being so dry. The trough will continue to move toward the coast on Wednesday with another short wave rotating around the base and up across the forecast area in a southwest flow.
Thunderstorm chances will increase again Wednesday as a cold front moves across the area. Cooler and much less humid air will filter in into the weekend. Lows tonight will be in the lower 70s with highs Wednesday in the middle 70s to lower 80s. After that cold front will begin to approach and slowly drift southeast during the day Wednesday.
With unidirectional south flow in the low and mid levels, training of storms may occur, leading to an increased flooding risk.
1100 PM MDT TUE AUG 30 2016 Upper level analysis has ridge over the western CONUS with trof off the west coast. At the surface, high pressure is located across North Dakota with a weak boundary across the area. Upper ridge remains over the northern Plains with mainly clear and dry conditions expected. Upper ridge will hold through the day with mostly sunny skies and warm conditions persisting.
946 PM EDT TUE AUG 30 2016 Water vapor imagery this evening shows an upper low centered near Augusta. lingering upper level low and strenghtening low along the coastal waters of Ga and Carolinas will keep tropical moisture in place. Models indicate lee troughing will develop out ahead of this feature.
715 PM EDT TUE AUG 30 2016 A cold front will move south across the area late tonight and Wednesday followed by a secondary cold front Wednesday night.
1249 AM EDT WED AUG 31 2016 High pressure moves offshore tonight.
Winds will become south to southwest near 15-20 kt over area waters Wed as a trough axis moves northward over the region ahead of TD #9. A trailing front will push south of the area late Fri or Sat with high pressure building NE of the region this weekend.
514 AM CST Tue Jan 31 2017 Latest sfc analysis places high pressure over central Nebraska this morning with last evening's cold front now stretched along the Missouri/Arkansas border. Aforementioned high pressure will continue drifting east today, ensuring light north winds and slightly cooler conditions as highs max out in the upper 40s to mid 50s this afternoon. As this occurs, fcst models in excellent agreement that cooler air will surge southward with time, ultimately putting a halt to the above normal temperatures we've experienced in recent days.
West to northwest flow across much of the lower 48 will become zonal after a wave rotates around the southern periphery of a vortex centered over Hudson Bay.
Winter Weather Advisory until 4 AM PST Wednesday ABOVE 2000 FEET for the Lower Hells Canyon/Salmon River Region.
The warmer air hasn't reached most of the WI counties yet where readings are still in the 20s. However, increasing west winds will bring milder air eastward today before another cold front pushes south this evening. A broad longwave trough takes on a negative tilt and leads to a strong cyclone across the center of the country.
A weak low pressure system over western Canada will clip the area tonight.
Surface ridging will remain across the Florida peninsula today with zonal flow aloft and a dry airmass continuing across the area. This is expected to lead to mostly sunny conditions again today with afternoon high temperatures warming into the low to mid 70s across the area.
A nearly zonal flow remains aloft over the region through today and Wednesday with broad high pressure also in place at the surface. With temperatures falling into the mid 30s and dew points into the lower 30s, we still expect to have areas of frost develop across much of our northern and interior counties, and the Frost Advisory remains in effect through 8 am this morning. With high pressure in place, no rain is expected and temperatures are expected to warm into the upper 60s to lower 70s area-wide under mostly sunny skies. Broad upper troughing will reside over eastern Canada and the Great Lakes into New England. Meanwhile, broad upper ridging will extend from the eastern Pacific Ocean into the Desert Southwest. At the surface, persistent high pressure will linger over the region.
Locations for these higher 8-12" snow amounts may be: US 93 around Evaro Hill, The I-90 corridor from Alberton through Missoula to Drummond, the Highway 200 corridor from Bonner to Clearwater Junction, up highway 83 to Seeley Lake, and US 93 from Missoula to the northern Bitterroot Valley (Lolo).
The warmer air hasn't reached most of the WI counties yet where readings are still in the 20s. However, increasing west winds will bring milder air eastward today before another cold front pushes south this evening. A broad longwave trough takes on a negative tilt and leads to a strong cyclone across the center of the country. Light rain and snow is lingering in MN but slowly diminishing - IFR conditions and snow continues in WI, where temperatures are much cooler tonight.
A cold front will approach the Red River today, but as lee troughing deepens, it will make no further progress. This dryline should approach the I-35 corridor during the afternoon before being overtaken by the cold front.
High pressure over the region will continue to bring dry weather through Wednesday.
950 AM CST Tue Jan 31 2017 Broad troughing and cyclonic flow prevail aloft, with southern Wisconsin located along the poleward extent of a 140 knot speed max nosing in from the northern Plains. Temperatures along the Illinois border are above freezing, and we may see some light rain in these areas. Quieter weather and cooler temperatures are expected on Wednesday, with high pressure working in from the northern Great Plains. Low pressure will continue to exit to the east today. That will push the higher waves out toward open water.
513 AM CST Tue Jan 31 2017 Low pressure has settled into southwest Lower Michigan early this morning with most of the precipitation associated with the storm occurring well north of our area and we expect that trend to continue today. with tomorrow being slightly cooler.
619 AM EST Tue Jan 31 2017 A low pressure system will move southeast across Lower Michigan this morning, bringing a mix of snow and rain. Have trimmed back a few counties on the south edge of the advisory given temperatures rising above freezing with a rain/snow mix. Roads should be mainly just wet where temperatures have risen above freezing. A broad upper level trof will develop over central North America causing temperatures to fall below normal during the latter half of this week. Temperatures will remain below freezing Thurs-Sat with highs mainly in the 20s.
Overnight lows will be similar this morning with temperatures dropping into the upper 30s to lower 40s, aside from valley locations along the I-10 corridor that will be able to radiate and drop into the lower 30s.
850mb temps increase further on Wednesday, which will bring even warmer conditions to the region.
A closed upper low centered near 35. 8W has moved very little during the past 24 hours, primarily due to a stationary ridge positioned downstream near the coast of CA, and lack of an upstream kicker system.
554 AM CST Tue Jan 31 2017 A general surface wind shift to the west will continue early today as Pacific-sourced air sweeps into the PAH forecast area to the south of a low pressure system traversing the Great Lakes. Lows Wed night are forecast to be below freezing across the entire region, though this might occur tonight in parts of southern IL.
Exception to the warmth will be in San Luis Valley, where temps will again struggle to reach freezing due to snow cover/strong inversion. cold front backs into the eastern plains 09z-12z, though only significant impact initially will be perhaps some stratus toward the KS border by sunrise.
/issued 256 AM CST Tue Jan 31 2017/ Currently temperatures were running some ten to twenty degrees warmer than this time last night. After midnight tonight increased low level moisture ahead of an approaching cold front could produce some patchy fog.
SHORT TERM (Today through Wednesday): Zonal 500 mb flow initially over Deep South Texas and the Rio Grande Valley will transition to filling 500 mb low pressure that will shift from the southern Baja Peninsula to directly over the BRO CWFA. Combined with the mid-level flow, and no cold front passages anticipated, dry weather will prevail for the short term portion of the forecast.
although the cooler low-level air will remain to our north. 00z models show a rather broad thermal ridge across a good portion of our forecast area. but areas south will likely be as warm if not warmer than yesterday.
A benign weather pattern is set up across Middle Tennessee this morning, with high pressure centered over the Florida peninsula and a deep low centered over the Great Lakes. A dry air mass has settled over the Mid-State with a WSW flow at the surface, and much warmer temperatures expected today.
525 AM CST Tue Jan 31 2017 A strong low pressure system in the Great Lakes will slowly churn its way to the Northeast. As this system moves off, a couple of post frontal troughs supported by weak upper level short waves will move through the region. Tuesday night, a second trough will come through the state. As the trough passes, a high pressure ridge will begin to build into the region and will re-enforce the CAA already in place and will drop temperatures further.