Aikyam-Lab/Synoptic-Bench huggingface dataset:
424 AM CDT Tue Apr 4 2017 Scattered showers will persist in the north this morning north of the frontal boundary, with additional showers and storms developing as the upper trough approaches from the west. As the upper wave moves east, the instability shifts to the east, but we continue with moisture near and wrapping around the upper low that showers will persist overnight in the northeast portion of the forecast area. The area will remain dry late this week after this system lifts out as upper ridging builds over the area. And daytime temperatures will be quite warm this weekend thanks to this ridge.
Low pressure was moving through central lower Michigan early this morning. Weak high pressure will build into the region this afternoon, bringing partial clearing. Another low pressure system will push into central or southern IL on Wednesday, and may bring some light rain to our southeast counties by afternoon. Cloudy skies and weak CAA will result in cooler highs in the middle 40s to lower 50s.
Low-level winds will increase significantly, especially in closer proximity to the low pressure system. Surface winds this afternoon to our north will be sustained near 25 mph, but the pressure gradient slackens a bit in our area and am only expecting west winds approaching 10 to 20 mph with the higher speeds across the northern CWA. The west and southwest flow in the lower levels of the atmosphere should ensure another warm day across the region today. As air moves west from the higher terrain and descends along the downslope, this helps warm the air further due to a process called compressional warming.
132 AM EDT Tue Apr 4 2017 High pressure over the Atlantic will maintain a moderate and gusty SSE wind flow across the area over the next 24 hours.
506 AM EDT Tue Apr 4 2017 Scattered showers will linger today as one low pressure system departs.
418 AM EDT Tue Apr 4 2017 Scattered showers will linger today as one low pressure system departs.
Then, this activity will taper off as high pressure builds in from the west.
High pressure aloft over the region will move east today, allowing a low pressure system to approach from the west. Meanwhile, the upper level ridge of high pressure presently over the region will continue moving east, allowing an upper level trough of low pressure over the northeast Pacific to head towards the Pacific Northwest. The trough axis is expected to remain offshore during this period.
Upper 60s dewpoints along with high theta-e air in the lower levels will surge north behind the boundary over southwest sections after midnight.
Otherwise, high cu/low AC cigs may develop after 00Z Wednesday over NE TX/SE OK/extreme SW AR ahead of the next upper trough that will enter the Srn Plains.
Very weak ridging will build briefly on Tuesday as an upper low digs into the Southern Plains. This upper low quickly pushes east into the Midwestern states on Tuesday/Tuesday night. The forcing ahead of the upper level low (and associated surface front) pushes northeast into Georgia on Wednesday.
Winds will decrease later this evening and tonight as the gradient relaxes behind a dry northern stream cold front.
500mb height falls up to 60m were noted in AZ, indicating the digging western US trough. A 115-kt upper-level jet was noted from BC into northern NV, reinforcing deepening of the western trough. The western US trough will deepen into a low that rolls across the southern Plains today/tonight.
an upper level low pressure area currently approaching north central New Mexico/south central Colorado this morning is forecast to move east today reaching southwest Kansas/northwest Oklahoma then east-northeast toward St. High temperatures in the low 40s south where precipitation chances highest to the low/mid 50s far northern zones where precipitation chances much less. high amplitude ridge axis moves toward the area in between storm systems across the east and off the west coast. High temperatures forecast to be in the low to upper 50s with lows in the mid 20s to low 30s.
Cirrus through the day will limit the full potential for heating, but highs should still reach the low to middle 50s. An area of high pressure over south-central Canada will continue to build towards the Northern Plains and Northland tonight and Wednesday. Cooler air will filter into the Northland. Wednesday looks a bit sunnier than Tuesday, and the forecast is cooler with highs in the upper 40s and low 50s.
The combination of water vapor and regional radar shows two low pressure centers, one circulation was located over south central Montana which is forecast to shift south today and merge/feed into the southern branch. Based on the height of radar reflectivitys, this is a reflection of the 850mb-700mb upper low. Main theme today is this mid/upper low will shift east into central ND through the day today before digging into the southern James River Valley this evening/tonight. In doing so, a surface cold front will shift from north to south through 00z Wednesday. Expecting the highest pops closest to the mid level low circulation this morning, then becoming scattered this afternoon as the atmosphere further destabilizes.
136 AM EDT Tue Apr 4 2017 A cold front is stalling out over the northern Florida Peninsula this evening, but is not expected to progress far enough south to produce significant rain chances at any of the Tampa Bay or Southwest Florida TAF sites today. High temperatures on Tuesday range from the middle 80s to near 90 south of the I-4 corridor, where solar insolation will be greatest, to the lower and middle 80s further north under a bit more cloud cover and influenced by residual cold-pool effect from the late night/morning shower activity.
347 AM EDT Tue Apr 4 2017 An upper level trough will exit the region this morning. Warm conditions are expected today ahead of a dry cold frontal passage tonight.
Slow moving trough in eastern Montana continues the northwesterly upslope flow into these highlands, especially into the Teton Range. But even this ends as the low continues its southeastward track away from the Gem State. A weak ridge builds in for tonight through at least Wed night, with little to no threat of precipitation, and finally clear enough skies and a shift away from northerly flow to west or southwest that allows strong warming so that by Wed temperatures are up 8 to 12 degrees F and actually above normal.
High pressure moving into the region will result in dry and warmer weather through the rest of the work week. An upper level low pressure system has quickly moved into New Mexico this morning with northwesterly flow taking hold over the area. Expect dry and relatively cool weather today as a ridge of high pressure builds over the inter-mountain west.
Weak high pressure over south Alabama this morning will keep things dry and warm today. Low pressure will move across the Texas panhandle this morning and reach northeast Oklahoma by early Wednesday morning with a cold front extending south of the low. As the cold front moves east, thunderstorms are expected to develop ahead of the front with some of this activity reaching the forecast area overnight. The cold front will move into the forecast area on Wednesday morning and should be east of the region by late afternoon. Temperatures will be cooler on Wednesday as the front moves through with highs in the mid 60s to mid 70s. With the cold front well east of the region Wednesday night, rain should be ending from west to east.
Trended our high forecast today toward a bias corrected blend of the hi-res models, which brought highs up into the low/mid 60s from the Twin Cities south and west.
A cold front is expected to impact KAUS and KSAT in the 30 hr period so included a line for the wind shift and winds behind the front.
Weak circulations has moved over the lower Yellowstone valley this morning. As the low pressure system exits to the east today, lingering moisture and instability should allow for ample convective activity to continue, with a general tapering from west to east as the day wears on.
Upper ridge currently along the coast will shift inland to western Idaho this evening and eastern Idaho Wednesday. Warm front will bring more clouds to eastern Oregon tonight and the entire area Wednesday. Wednesday will be 9 to 12 degrees warmer than today in the south, but 6 to 9 degrees warmer in the north where clouds will be thicker.
548 PM CST Thu Dec 29 2016 Analysis of 12z upper-air data and early-afternoon water vapor imagery indicate the amplification of a broad-scale trough across the eastern half of the nation. In the low levels, strong gradient flow on the backside of the synoptic- scale trough to our east has yielded breezy conditions today, especially across our eastern counties. On Friday, considerable low-level warm advection is forecast ahead of a cold front which will begin to move into the northern part of the forecast area by evening. Abundant sunshine coupled with the low-level warming will boost afternoon temperatures into the 50-55 degree range over our western counties with 45-50 degrees in the east. The cold front will advance southeast through the mid Missouri Valley Friday night with gusty northwest winds developing in it's wake.
533 PM MST Thu Dec 29 2016 Benign weather is expected across eastern Utah and western Colorado tonight and into tomorrow as an upper level ridge remains situated over the area. Moisture will increase from the southwest tomorrow afternoon, allowing for some mid and high level clouds to stream across the skies, as an open wave trough approaches our southern border. The previously mentioned trough has become progressively less pronounced over the past several model runs. Considering the mild nature of the storm, significant snow accumulations will be confined to the higher elevations with more localized impacts.
932 PM CST Thu Dec 29 2016 Midevening skies were clear over the lower and middle MS River valley. A 1034mb surface pressure ridge centered over TX was driving light westerly winds across the Midsouth. This ridge is progged by the short range models to move only slightly east overnight. High pressure is currently centered over the Oklahoma Panhandle at this time. The high is forecast to move southeast into North Texas tonight. Temperatures will be seasonably chilly with lows Friday morning mainly in the lower 30s. On Friday, the high will scoot to the east and reach central Alabama. Temperatures will remain seasonal with highs in the low to mid 50s. By Friday night, a cold front will start to approach the region from the northwest.
807 PM EST Thu Dec 29 2016 Accumulating snow is expected in the high terrain of Pennsylvania, West Virginia, and Maryland, as well as in the counties north of I-80, through Friday. Thus, snowfall rates will increase in the ridges and snow belts overnight with inch per hour rates certainly possible. The remainder of the ridges will still see significant snowfall, however amounts will not likely muster the panache of Garrett and Tucker County. Snow showers will likely continue into the ridges through early friday night with saturation remaining in the dendritic growth zone, but accumulating snow should end.
555 PM EST Thu Dec 29 2016 Accumulating snow is expected in the high terrain of Pennsylvania, West Virginia, and Maryland, as well as in the counties north of I-80, through Friday. 50"+ liquid equivalent in the ridges from a synoptic model, confidence has increased enough to allow for one foot wording in the highest elevations. With steep lapse rates and saturation to almost 650mb, a period of heavy snow is possible, especially in the high terrain overnight. In addition to the snow fall, gusty wind with deep mixing through the boundary layer will blow any new snow around, further deteriorating conditions over the high terrain. Snow showers will likely continue into the ridges through early friday night with saturation remaining in the dendritic growth zone, but accumulating snow should end.
The warm front will rebound Northward over the weekend with another round of rain, albeit still fairly light NW corner of cwa and maybe a half inch or so over the SE corner.
829 PM EST Thu Dec 29 2016 Latest water vapor and upper air analysis shows a trough digging into the eastern part of the country with a near-zonal flow over Florida. At the surface, an area of low pressure is located just off the northeast coast with a trailing cold front making its way through northern Florida. Behind the front, a much cooler and drier air mass will move into the area, and temperatures in the morning are expected to be quite a bit colder than what we have been experiencing lately- generally in the 40s and 50s, which is a couple of degrees below normal. A cold front will pass through the waters tonight, with high pressure building into the area for Friday.
Over the offshore waters, where SSTs are still in the low/mid 70s ample momentum transfer will continue to keep the gale going through the remainder of the evening. Still have some lingering gusts in the low-20 knots range and these will continue to decrease through late this evening. A rapid transition from a cooler and drier airmass, currently advecting southward across the CWA, towards a warmer and more moist airmass will occur beginning on Friday. A return flow setup with a southerly LLJ between 30 and 35 kts will develop Friday night as the anticyclone weakens and moves quickly ewd.
537 PM CST Thu Dec 29 2016 Following the frontal passage from last evening, slightly cooler air was in place for today with a ridge over the area.
831 PM CST Thu Dec 29 2016 Areas of cloudiness will continue to rotate around the upper trough over the Great Lakes Region overnight. Winds will also slowly die off overnight as the trough shifts east and high pressure starts to build in from the west. Northwest winds will continue into the overnight hours as high pressure continues to build into the region. Tomorrows high temperatures will be a couple degrees above todays as the flow becomes more southerly and the ridge axis moves over the forecast area. Ridging Friday night will quickly move off to the east in the fast zonal flow as another weather system moves quickly into the area for the first part of the weekend.
834 PM EST Thu Dec 29 2016 Cold front and associated line of showers continues weaken as it pushes south of our area into central Florida. Colder and drier airmass will filter into the area overnight as skies clear and high pressure builds in from the west. Prevailing VFR as a cold front continues to move well southeast of the area. Cold front pushing south of the coastal waters this evening as northwest winds and seas increase to SCA criteria and remain elevated through mid Friday afternoon.
/issued 245 PM CST Thu Dec 29 2016/ A negatively tilted ridge axis to our west will flatten leading to zonal flow across the region into Friday. The barometer definitely shows the high with readings early this afternoon in Lubbock showing 30. Despite the high surface pressure, we're still seeing some thick cirrus move into the region from Mexico.
Northerly winds will decrease to less than 10 knots this evening and through the night, as the high settles in, with winds eventually becoming east on Friday Morning and southeast on Friday Afternoon, as the high moves across. This high pressure system will also bring dry conditions in the low levels to keep VFR conditions through the period, with just high level clouds moving overhead. Cold front has advanced deep into the gulf waters and radar now absent of any precip. This time around however, warmer temperatures will be accompanied by considerable rainfall.
A strong inversion is noted at 850mb with cooler air advecting in below the inversion on the back of northerly winds.
The snow, which continues to fall across NW Montana this afternoon, will gradually increase overnight as a Canadian cold front slides south across the Northern Rockies on Friday.
However, as an upper level trough moves into the southwest U.
The deep upper trough just to our east this afternoon will move steadily eastward, allowing the flow aloft to relax and become zonal by Friday evening. At the surface, high pressure will build eastward to our south.
/issued 331 PM CST Thu Dec 29 2016/ (Tonight and Friday) Much cooler day across West Central Texas this afternoon, with temperatures mainly in the mid 50s. Northeast Big Country northeast of Abilene will see the driest air mass and may be able to fall a couple more degrees to near freezing.
944 PM CST Thu Dec 29 2016 The evening sfc analysis depicts sfc ridging over NW TX centered just N of ABI. but these should mostly decouple overnight with the approach of the ridge.
1004 PM EST Thu Dec 29 2016 Accumulating snow is expected in the high terrain of Pennsylvania, West Virginia, and Maryland, as well as in the counties north of I-80, through Friday. Thus, snowfall rates will increase in the ridges and snow belts overnight with inch per hour rates certainly possible. The remainder of the ridges will still see significant snowfall, however amounts will not likely muster the panache of Garrett and Tucker County. Snow showers will likely continue into the ridges through early friday night with saturation remaining in the dendritic growth zone, but accumulating snow should end.
VFR/MVFR conditions are expected through the remainder of this evening and tonight in the wake of a cold front that passed through the aerodromes earlier today. /issued 229 PM CST Thu Dec 29 2016/ SHORT TERM (Tonight through Friday Night): The cold front will quickly pass south of the RGV through the remainder of the afternoon as high pressure quickly builds into TX. Winds will remain rather gusty through the evening but will generally lessen under the influence of the high. Winds will become turn NE to SE through the period a warm front begins lifting north.
815 PM EST Thu Dec 29 2016 An upper-level trough will remain overhead tonight into Friday and high pressure will build into the area late Friday through Friday night.
610 PM EST Thu Dec 29 2016 The cold front will move offshore this evening.
531 PM CST Thu Dec 29 2016 Northwest winds will continue into the overnight hours as high pressure continues to build into the region. Tomorrows high temperatures will be a couple degrees above todays as the flow becomes more southerly and the ridge axis moves over the forecast area. Ridging Friday night will quickly move off to the east in the fast zonal flow as another weather system moves quickly into the area for the first part of the weekend.
330 PM MST Thu Dec 29 2016 19Z water vapor imagery indicated northwest flow across the Tri- State area with short wave ridging in place across the northern rockies. Main concern through the afternoon will once again be fire weather as dry layer aloft has been mixing down much drier air allowing dewpoints to fall into the lower single digits. weather will remain quiet through Friday with temperatures warming into the low 60s by tomorrow afternoon.
A cloudy and cool day is expected Friday as high pressure drifts east of the region.
A cold front is currently draped across the Florida peninsula with cold air pressing southward through the southeast States, the northern Gulf of Mexico, and further to the Texas/old Mexico border.
Have made a few changes to minimum temperatures as well this evening as forecasted temps have already been reached in areas around Boise and west to the Lower Treasure Valley.
900 PM MST Thu Dec 29 2016 19Z water vapor imagery indicated northwest flow across the Tri- State area with short wave ridging in place across the northern rockies. Main concern through the afternoon will once again be fire weather as dry layer aloft has been mixing down much drier air allowing dewpoints to fall into the lower single digits. weather will remain quiet through Friday with temperatures warming into the low 60s by tomorrow afternoon.
A very dry high pressure system was moving into Mid TN this afternoon with gusty northwest winds. The high pressure system will be the main wx feature through Friday with quiet conditions and gradually diminishing winds.
Winds will decrease by early Friday afternoon as a cold front pushes trough. The cold front will race through the area Friday morning and bring a period of upslope snow Friday and Friday evening.
358 PM MST Thu Dec 29 2016 Benign weather is expected across eastern Utah and western Colorado tonight and into tomorrow as an upper level ridge remains situated over the area. Moisture will increase from the southwest tomorrow afternoon, allowing for some mid- and high-level clouds to stream across the skies, as an open wave trough approaches our southern border. The previously mentioned trough has become progressively less pronounced over the past several model runs. Considering the mild nature of the storm, significant snow accumulations will be confined to the higher elevations with more localized impacts.
812 AM EDT Fri Nov 4 2016 Low pressure will exit east of the maritimes today.
Warm southwesterly flow aloft combined with a strong ridge over the area will bring above normal temperatures through Saturday.
928 AM EDT Fri Nov 4 2016 A mid/upper-level trough is centered over eastern Canada this morning, with its axis extending across much of the eastern seaboard and into the southeast U. , while a large ridge remains over the central part of the country. At the surface, a cold front is moving into the southeast this morning, approaching northern Florida. Light winds this morning will become more northwest today and then northeast tonight as a cold front moves into the peninsula. A cold front will move through the waters tonight into Saturday, with northwest winds today becoming northeast tonight through the weekend.
The upper level pattern this morning shows a trough exiting the East Coast, a ridge across the Great Plains and a cut-off low over Arizona. 12Z surface analysis showed a cold front across the Tennessee Valley.
Elsewhere across South Central Texas, mainly ISOLD SHRA/TSRA are expected and have left mention out of KAUS/KSAT/KSSF TAFs due to low PROBs from weak ridging. Upper air analysis last evening showed a ridge extending from Texas to the northern plains and a cutoff low centered over northwestern Mexico. At the surface, a cold front extended from Houston to Floresville to Quemado. The upper level low will begin to move to the northeast today and ride up the western side of the ridge.
Cold front over the southeastern U. Mostly to partly sunny skies expected ahead of the front today with highs reaching the low to mid 80s. Isolated to scattered showers possible along a cold front that will move through the area tonight. (Previous Discussion) Weak pressure gradient expected through the afternoon ahead of a cold front that is expected to approach the northern waters just after sunset.
/ISSUED 417 AM CDT Fri Nov 4 2016/ At 300 Am, a weak cold front extended from near Alexandria LA to Bush IAH to near Cotulla, The front was becoming increasingly diffuse but there should be enough of a push to move it into the Gulf. Temps should be a few degrees cooler behind the front and with a bit more cloud cover expected.
Light wind regime will continue through the weekend, as large slow moving high pressure area passes by to the south of the Great Lakes.
1115 AM EDT Fri Nov 4 2016 High pressure will build to our west today and into this weekend.
/issued 427 AM PDT Fri Nov 4 2016/ Dry conditions will prevail for one more day, as high pressure dominates our weather. An approaching cold front will bring rain to the region for Saturday, with some of the rainfall moderate to heavy in intensity at times.
Cirrus was riding along the northern periphery of the upper ridge per satellite imagery.
High pressure will rule today. The pattern will consist of a broad trough in the northeast Pacific/Gulf of Alaska and a ridge east of the Divide that will slowly shift farther east. The top of the shifting ridge axis will be located well to the north in northern Canada.