Aikyam-Lab/Synoptic-Bench huggingface dataset:
1121 AM MDT Wed Sep 27 2017 The latest upper air analysis shows the closed low over the Desert Southwest continuing to deepen. East of the low atmospheric moisture was continuing to stream northeast over the middle of the CONUS. At the surface a high pressure was over the Central High Plains. Rainfall chances extend further east across the forecast area compared to yesterday due to the ridge being pushed slightly further east.
325 PM CDT Wed Sep 27 2017 High pressure sinks south of the area already responsible for a light west breeze.
247 PM CDT Wed Sep 27 2017 Approaching cold front continues to very slowly drift sewd across TX/OK/AR this aftn. Upper ridge remains anchored over our region and in conflict with potential convection.
127 PM EDT Wed Sep 27 2017 A cold front will move east across the area today bringing the chance for a few showers. A large area of high pressure following the front is forecast to provide dry weather and cooler, near normal temperatures lasting through the weekend. Winds have shifted to northwest here at ILN while increasing to about 8 knots, signaling that a cold front stretching northeast to southwest has just passed the office. Some weak CAA will initially develop on the backside of the front through the day, leading to highs ranging from the lower 80s in the northwest to the mid and upper 80s across the southeast.
326 PM CDT Wed Sep 27 2017 Current surface analysis places low over northeastern Manitoba, with trough dropping south into eastern North Dakota. Upper level analysis places modest trough over the upper midwest stretching southwest towards a cut-off low over Arizona. Ridge remains over the Pacific northwest. quiet weather is expected as ridge starts building towards the east. Quiet weather expected through the work week as the Canadian Rockies upper level ridge builds into the region, bringing dry conditions and keeping seasonal temperatures in our area.
228 PM EDT Wed Sep 27 2017 Warm high pressure will remain across the region through Thursday as Hurricane Maria slowly moves away from the NC coast. A moisture limited cold front will move through the area Thursday night, then stall just south of the area over the weekend. Above normal temperatures will cool for the end of the week behind the cold front. A broad upper ridge will remain centered west of the region with high pressure ridging into the forecast area at the surface. Still expect afternoon high temperatures about 10 degrees above normal, in the low to mid 90s. For Thursday, a cold front will be approaching the region from the northwest. Highs climb into the lower 90s for most areas during Thursday afternoon.
350 PM CDT Wed Sep 27 2017 Wx map shows cold front across C TX northeast through SE OK/NW AR this afternoon, not much further south from yesterday. Temperatures in the lower 90s.
352 PM EDT Wed Sep 27 2017 A cold front will move east tonight, followed by a large area of high pressure. Dry weather, and cooler, near normal temperatures are expected through the weekend as the high travels slowly from the Ohio Valley to New England. Cold front is located near the southeast edge of the FA. This will leave the area under partly cloudy skies as cloud formation should be curtailed by subsidence in the circulation around approaching high pressure. Cold advection will result in low temperatures several degrees cooler than in recent nights, with 6 am readings ranging from the low 50s northwest up to the upper 50s southeast. High pressure pushed by a confluent westerly flow aloft will be positioned across the area.
Still, anticipate conditions to remain predominant VFR overwhelmingly with fog potential late tonight relatively low (except at HBG/PIB) because an incoming weak cold front will dry out the low level environment a bit and keep winds from completely decoupling from the boundary layer. Other atmospheric differences include much more ridge influence today, especially evident on sounding in the form of anomalously warm 500MB temps; also low level temperatures below 700MB are 1 to 2 degrees C warmer than yesterday. This regime over the Lower MS Valley is evolving ahead of a cold front slowly sinking southeast toward the region. /BB/ Prior discussion below: Today and Tonight: Mid level ridge will remain anchored across the forecast area through tonight. Mins Thursday morning should be slightly cooler than the past few days over the far northwest.
658 PM EDT Wed Sep 27 2017 Warm high pressure will remain across the region through Thursday as Hurricane Maria slowly moves away from the NC coast. A moisture limited cold front will move through the area Thursday night, then stall just south of the area over the weekend. Above normal temperatures will cool for the end of the week behind the cold front. A broad upper ridge will remain centered west of the region with high pressure ridging into the forecast area at the surface. For Thursday, a cold front will be approaching the region from the northwest. Highs climb into the lower 90s for most areas during Thursday afternoon.
A low pressure system which brought cool conditions to the area will weaken and move to the northeast tonight. A closed upper low over northwest Arizona this afternoon was generating showers and thunderstorms, mainly east of our forecast area. This system will continue to bring a slight chance of showers and thunderstorms to northeast Mohave County this evening with chances decreasing overnight as the upper low moves toward the four corners region.
Upper low is spinning over Arizona. Jet streak will move around the upper low overnight and pass over the forecast area. This is the first snow event of the season and there are likely many hunters and other outdoor enthusiasts over the higher mountains.
1210 PM CDT Wed Sep 27 2017 Updated aviation section for 18z TAF package A cold front was partially through the PAH forecast area at 08z, basically near the Ohio River.
An upper ridge and low level offshore flow will give Western Washington another warm sunny day on Thursday.
137 PM EDT Wed Sep 27 2017 High pressure will give way to a mostly-dry cold-frontal passage this evening. Cooler, drier air will invade overnight, helping to maintain steep low-level lapse rates and the potential for stratocu development.
225 PM MDT Wed Sep 27 2017 Upper level analysis has a broad trof across the northern and western CONUS with closed low over Arizona. At the surface, high pressure is located across the Northern Plains with mostly clear skies. Upper ridge builds across the area on Thursday with another warm dry day.
238 PM EDT Wed Sep 27 2017 High pressure will give way to a mostly-dry cold-frontal passage this evening. Cooler, drier air will invade overnight, helping to maintain steep low-level lapse rates and the potential for stratocu development.
254 PM EDT Wed Sep 27 2017 The much anticipated cold front is currently stretched across central KY approximately along a line from Bowling Green to Frankfort. The cooler air and significantly lower dewpoints are lagging the wind shift and front a bit. Significantly cooler weather is expected tomorrow with highs in the mid 70s. Upper level troughing will develop across the northeastern CONUS through the end of the week.
Current echoes on KBYX Doppler radar show the Atlantic waters well south of the Upper Keys and the Straits south of the Lower Keys are the favored locations for convection. Where confidence is lower is with the wind direction as the lower pressure evolves.
422 PM EDT Wed Sep 27 2017 Isolated showers tonight with passage of a cold front.
Expect temps to be just a bit cooler to the east of the valley. Water vapor loop indicated an upper level low pressure system over Ontario. Upper low will continue to move northeast away from the area. Upper level ridge over western Canada will roll over the area Fri night.
A favorable ridge of high pressure will continue providing warm and tranquil weather for NE Montana over at least the next few days. Even though a removed, small closed low pressure system is approaching from the Great Basin area, it's effects won't be felt here until it is absorbed by the next major storm system from the Pacific NW later this weekend.
Sloppy surface pressure pattern and a warm and humid air mass persist across the Ohio Valley, but the end of the heat wave is in sight, in the form of a strong cold front extending from the Upper Peninsula of Michigan southwest to the Texas Panhandle. Upper low moving ENE across Upper Ontario will drive that cold front SE into the Ohio Valley later today. Persistent ridging aloft will seriously limit mid-level lapse rates, so anything that does develop will be weak. Cold air advection begins in earnest tonight/Thu, and will knock temps back to near normal for this time of year, if not a couple degrees cooler.
Patchy fog has developed in parts of northwest Iowa and South Dakota, although some high cirrus across northwest Iowa and a small area of mid level clouds over the Highway 14 corridor have helped to limit the fog development thus far. Wednesday will see the upper jet currently centered over Minnesota translate over the Great Lakes through the day as the axis of an upper level trough swings eastward. Thursday should prove to be a dry and somewhat mixy day as an upper level trough shifts to the east. Otherwise full mixing supports highs in the lower to middle 70s.
SHORT TERM (Tonight through Thursday Night): A mid level cut off low over Arizona will drift slowly north toward Utah, with a ridge over the west Gulf and coastal Texas. The local pressure field will remain flat, sandwiched between slowly approaching high pressure from the plains and a weak low pressure center over the southwest Gulf.
250 PM CDT Wed Sep 27 2017 An upper low remains over Arizona today with enhanced lift over the Lower Trans Pecos. Models are indicating that the heaviest rain will be across the Lower Trans Pecos today where the best lift is located. Temperatures will be colder today with the passage of a cold front and cloud cover staying across the area. The upper trough begins to lift northward on Thursday and upper lift decreases across the area.
119 PM EDT Wed Sep 27 2017 Great flying weather expected this afternoon with VFR conditions expected as high pressure remains in control.
145 PM EDT Wed Sep 27 2017 An area of high pressure will remain centered over the Appalachians today, while Tropical Storm Maria tracks northward, offshore the southern middle Atlantic coast. A dry cold front will approach from the northwest tonight, then cross central NC late Thu. Tropical cyclone Maria located east of Hatteras will continue its slow nwd drift today. Meanwhile, a narrow ridge of high pressure along the spine of the Appalachians will gradually weaken. The low level nly flow around Maria has advected a deck of stratus across the eastern third of the forecast area this morning.
Transition to more seasonal air underway as two frontal boundaries will move across the area today bringing cooler temperatures and lower humidity to the region. Kept with previous forecast idea of cooler temps northwest but still warm in southeast prior to arrival of cooler air. Lake temperatures have warmed substantially during recent warm spell and are sitting in the lower 70s, or around 20-23C. Moisture depth and inversion will be shallow, likely 4kft or less per NAM12 while large scale subsidence will be occurring as large high pressure over Midwest tries to build into the Lakes region. High pressure will briefly nudge into the area Thursday afternoon but next short wave and associated surface cold front will drop south late Thursday night.
/issued 853 AM EDT Wed Sep 27 2017/ a trough aloft the Gulf of Mexico and FL will provide subsidence through today with generally dry conditions. A trough across Fl as high pressure builds into the Gulf will maintain benign winds and seas through the end of the week.
316 PM EDT Wed Sep 27 2017 A cold front will push through the area late this afternoon and evening with clouds and perhaps a few showers. This front will usher in much cooler air, which will persist through the weekend. High pressure fading as a cold front approaches western NY and northwest PA. The cold front will finally kick it out Thursday. Late tonight before the deeper moisture leaves some lake enhanced showers are possible across the higher terrain of central NY.
A cold front, passing through late Thursday night will bring fall like conditions to the area for several days. Meanwhile, a cold front now moving east of the Mississippi River Valley will approach the eastern Carolinas, moving across the central Carolinas Thursday evening. A consensus of guidance gives us highs on Thursday in the lower 90s. Moisture deprived cold front will be making its way through the area Thursday night. Zonal mid level flow will bring mid level drying atop the low level dry air and precipitation is not expected.
A weakening upper ridge will maintain dry weather and seasonable temperatures on Thursday.
weak troughing tonight into Thursday in combination with sufficient over lake instability is expected to produce lake clouds and at least scattered showers in northwest flow favored locals.
Cold front slowly sliding through southeast Michigan this morning with little fanfare (isolated light showers), but steady northwest winds today will lead to drier and cooler conditions.
Temperatures trend a couple degrees warmer each of the next couple days with continued dry conditions.
151 PM MDT Wed Sep 27 2017 The latest upper air analysis shows the closed low over the Desert Southwest continuing to deepen. East of the low atmospheric moisture was continuing to stream northeast over the middle of the CONUS. At the surface a high pressure was over the Central High Plains.
Temperatures will rebound into the lower 70s inland with weak warm air advection and sunshine Thursday.
648 PM EDT Wed Sep 27 2017 High pressure will give way to a mostly-dry cold-frontal passage this evening. Isolated showers beginning to wane across the area as the sun set on the pre-frontal trough activity. Cooler, drier air will invade overnight, helping to maintain steep low-level lapse rates and the potential for stratocu development.
1252 PM CDT Wed Sep 27 2017 A cold front continues to work its way slowly through the state at this time. Cold front is bisecting the state from roughly KDEQ to KLIT to KJBR attm. Today Through Thursday Night Seeing the highly anticipated cold front making slow progress into NW AR early this Wednesday morning. Unfortunately, with an upper low spinning over the SW US and ridging in place to the south, moisture will be very limited across the state as the front moves through. At the surface, high pressure will build in over the area through Thursday, although remaining centered northwest of the state.
Expect this area of clouds to expand some today as an upper low around the Cal/Az border begins to drift northeast today through tonight. A few light showers not out of the question over the southern mtns today but the main shot of pcpn will hold off until later tonight as the upper low reaches the southern Utah area. Favorable pattern then shifts more westward during the day Thursday and Thursday night as the upper low edges into western Wy.
113 PM EDT Wed Sep 27 2017 Isolated showers tonight with passage of a cold front.
306 PM EDT Wed Sep 27 2017 High pressure will give way to a mostly-dry cold-frontal passage this evening. Cooler, drier air will invade overnight, helping to maintain steep low-level lapse rates and the potential for stratocu development.
319 PM CDT Wed Sep 27 2017 The short term concern remains timing of next cold front and risk of any showers. Temperatures should cool to close to overall guidance numbers, perhaps a degree cooler to the southeast. Highs in the mid 60s in the northern CWA to the lower 70s in the south look to be a good bet.
However, a cold front will push through the area late this afternoon and evening with clouds and perhaps a few showers. This front will usher in much cooler air, which will persist through the weekend. Today will be one final day with daily records getting reached or exceeded, before a cold front abruptly cools things off for Thursday and beyond. Summerlike high pressure is present yet gradually weakening over our region currently, with clear sky and shallow valley fog underneath a very warm atmospheric column. Meanwhile, low pressure is now in Central Ontario. This low will move into Quebec, trailing a cold front across the eastern Great Lakes this afternoon and Northeast/Midatlantic regions this evening.
A surface cold front is currently located south of the area early this morning. Highs today will be cooler with highs generally in the upper 60s to the lower 70s as clouds and a cooler air mass will be over the region. Highs in the lower to middle 70s and lows in the 50s can be expected each day this week into the weekend. An upper level low will then move into the northwestern U.
225 PM CDT Wed Sep 27 2017 Winds turned into the north early this morning in the wake of a cold front. As advertised by the models yesterday, the cooler and drier air lags about 12 to 18 hours behind the frontal passage.
147 PM EDT Wed Sep 27 2017 Aviation Significantly cooler temperatures are expected today with highs running around 20 degrees cooler than yesterday. High pressure ridging behind the cold front should result with a fair amount of afternoon sunshine.
They will lift VFR by lunch with heating working with an upper low moving overhead to scattered showers and thunderstorms around all aftn for all terminals and then coverage diminishing with sunset. sct convection remains ongoing across extreme Nrn OK/SW MO, just ahead of a cold front that is making slow progress S across these areas.
latest available IR imagery overlaid with model streamline analysis as of 900 pm depict split middle and upper level air pattern across much of the CONUS, but with many identifiable middle level disturbances moving in the southern stream at 500 mb, over Texas, to the Lower Mississippi Valley to the Tennessee Valley. At the surface and in the lower to middle levels. latest IR imagery overlaid with marine and surface observations as of 900 pm detail the axis of 1025 mb surface ridging centered over the Western and Central Atlantic Ocean from near Buoy 41048 westward to North Florida. As of 900 pm, skies are partly cloudy over the Lower Keys and surrounding waters, but actually mostly cloudy across the Middle and Upper Keys and surrounding waters.
706 PM EDT Sun Apr 16 2017 High pressure will extend across the region through Monday.
524 PM MDT Sun Apr 16 2017 Upper level analysis has upper trof shifting east across the northern CONUS with ridge building across the Rockies. At the surface, high pressure resides across the central plains with a weak cold front across North Dakota. High pressure will slide to the southeast across the Dakotas with winds slowly becoming southerly after midnight. Weak frontal boundary to the south will lift back north into the area as a warm front during the day as low pressure develops along it across eastern WY. The best chances for rainfall late Monday into Monday night will be mostly east of the Black Hills as low pressure moves quickly across SD during this time.
Weak high pressure from the northern plains is bringing cooler and drier air into the region today. Fair skies with temperatures slightly above normal will continue through Monday as the high pressure system moves slowly southeast. Forecast highs and lows should be within 3 degrees of forecast with favored low lying areas tending to be a couple of degrees cooler than forecast north of I-80.
1256 AM EDT Mon Apr 17 2017 Building high pressure will ensure a dry start for the new week; however, the latter half will feature increased rain chances as a series of low pressure systems affect the region. The midnight update featured further adjustments to clouds and pops as convective development continues with the advance of the cold front. Building high pressure will ensure a dry Monday/Monday afternoon for the southernmost counties with seasonal temperatures and falling dewpoints.
942 PM EDT Sun Apr 16 2017 A cold front will cross the area overnight with showers ahead of it.
638 PM CDT Sun Apr 16 2017 A cold front is slowly making its way across Central Illinois this evening with more northerly winds behind it and cooler temperatures expected overnight tonight. Mondays forecast has shifted a little south of I-70 where a wave ripples along the remnants of the cold front, producing some showers and thunderstorms. Max temps for Monday will be held to the lower 70s.
/issued 342 PM CDT Sun Apr 16 2017/ (Tonight and Monday) A weak upper trough across West Texas has kept the low clouds from clearing with temperatures in the 70s at 2PM. A cold front was straddled across the South Plains this afternoon, and a dryline extended south across Far West Texas. Water vapor satellite also shows a weak upper low moving into the Big Bend and southwest Texas, triggering thunderstorms around Fort Stockton. Continued low chance Pops for tomorrow since there could be some residual showers and thunderstorms across the area as the weak upper trough will be exiting to the east by tomorrow evening. An upper level ridge will then build in, bringing subsident and dry conditions through midweek.
1237 AM EDT Mon Apr 17 2017 A cold front will move southeast across the area early tonight.
sct convection remains ongoing across extreme Nrn OK/SW MO, just ahead of a cold front that is making slow progress S across these areas. They will lift VFR by lunch with heating working with an upper low moving overhead to scattered showers and thunderstorms around all aftn for all terminals.
1228 AM EDT Mon Apr 17 2017 High pressure will extend across the region through Monday.
Around sunrise tomorrow, showers are expected to be spreading into the area from KY and Middle TN ahead of a cold front.
Some clearing is possible across the far northwest late, and maintained lows in the lower 20s for now. A cold front continues to push through southern ND this afternoon. Some light snow was reported across northcentral North Dakota where temperatures were in the low 30s. Much colder temperatures will filter in overnight as high pressure settles over the area. Temperatures will likely fall into the low to mid 20s across most of the area.
They will lift VFR by lunch with heating working with an upper low moving overhead to scattered showers and thunderstorms around all aftn for all terminals. However overnight, the lower levels of the atmosphere will remain moist and in fact, progged PWATS increase a bit. Rainfall chances should spread to the remaining areas throughout the day tomorrow as the intrusion of a weak cold frontal boundary combined with the embedded impulses moving overhead aids in increasing UL support.
1027 PM EDT Sun Apr 16 2017 A cold front will move south through the Ohio Valley tonight. High pressure and dry weather will return to the area for the beginning of the work week. A cold front will slip south through the region overnight. Surface cold front to drop south into the TN Vly with high pressure building into the Great Lakes. Temperatures Monday will be cooler, ranging from the upper 60s in the north to the lower 70s in the far south. Under the influence of high pressure clouds will diminish with a dry airmass over the region.
Showers were spreading into SE Oregon ahead of a mature low pressure system near the Oregon coast. The center of the low and thus heavier showers will stay mainly to our northwest. The showers will decrease during the day as the low slides through the ID panhandle and into western MT. A weak upper ridge will result in a brief dry period before a moist SW flow aloft leads to more showers by late Monday afternoon.