Aikyam-Lab/Synoptic-Bench huggingface dataset:
309 PM MDT Wed Jun 28 2017 Current surface analysis shows low pressure over southeast WY, with frontal boundary hanging across southern WY and into the Central Plains. Upper level analysis shows near zonal flow across the region, with upper low across central Canada. Regional radars show showers and thunderstorms have developed across the higher terrain of southern MT and WY, now pushing onto the Plains.
635 PM EDT Wed Jun 28 2017 High pressure will move off the eastern seaboard later today setting up a warmer and more humid airflow beginning on Thursday.
The center of the subtropical ridge remains south of the region with large scale troughing pushing across the Pacific Northwest and the Great Basin.
/issued 638 AM CDT Wed Jun 28 2017/ /12Z TAFS/ Low cloud development/expansion over our southern and some eastern counties will affect our southern TAF sites, with KSJT near the northern edge of the low cloud field. Temperatures will be a few degrees warmer for highs today, as a low-level thermal ridge begins to build east into our area. Lows tonight will be a little warmer than the previous night as south winds continue.
316 PM CDT Wed Jun 28 2017 Upper level divergence within the ridge axis rotating slowly east across the area late today could yield still a few successful convective updrafts across the southwestern South Plains, with short term solutions maintaining limited activity yet in this area.
231 PM CDT Wed Jun 28 2017 The regional weather for the rest of the work week will focus on an upper level low over western Canada forecast to move into the Northern Plains.
Clouds will increase late in the period with the lowest ceilings around CHA late tonight and Thursday where there will be a chance of rain showers.
213 PM EDT Wed Jun 28 2017 High pressure will maintain dry weather today. Dry weather will continue overnight as high pressure remains in control.
Pattern Overview: The 500mb ridge east of Bahamas will lift northward through Thursday, bringing the ridge axis across central Florida, and the upper trough along the northeastern conus will push northeastward. Tonight and Thursday: A weak coastal trough will develop tonight, and a few showers are possible along the east coast overnight, especially southeast Georgia. Mostly cloudy skies will prevail and overnight lows will be in the low to mid 70s. High pressure ridge will be east of the region through much of this period, with a trough sinking into the Southeastern US late in the period and the ridge sliding to the southeast.
Highs on on Thursday are expected to range from the low 70s across the north and mid 70s across central and downeast. It will be a bit cooler along teh coast. Models cont to advertise our fcst area straddling the baroclinic zone between cooler canadian air to our N and much warmer, moister tropical air to the S of the Rgn thru the short term. Following this front, shwrs and tstms should decrease in cvrg on Sun, being more diurnally driven in the late aftn as the cntr of the high PW stream moves E of the FA. One last upper trof crosses the Rgn from QB on Mon with additional shwrs and perhaps isold tstms with a slight cooling trend.
A few light showers remain in the east late this morning and should be dissipating by noon as the upper level low pressure area moves east. The low level jet and strong southerly flow persists along and east of the James valley, while to the west, northwest winds have developed out ahead of weak high pressure.
Convective temps are warmer on Thursday so showers will likely develop later in the day except near the immediate coast. As the coastal trough meanders around and in from the coast expect the storms to continue develop and spread inland. Elevated tide levels will continue with the persistent coastal troughing. Rip current stronger today and probably begin to see some overwash on 87 near High Island during the high tide this afternoon with these same conditions tonight and Thursday.
201 PM EDT Wed Jun 28 2017 High pressure over the region today will move off the coast tonight. Overnight lows will be slightly warmer tonight especially across the CSRA but should see a range in lows from the lower 60s northern Midlands to upper 60s CSRA.
248 PM EDT Wed Jun 28 2017 High pressure will move off the eastern seaboard later today setting up a warmer and more humid airflow beginning on Thursday.
326 PM CDT Wed Jun 28 2017 Warm and humid conditions continue through tomorrow with convection focused on the slow moving cold front which will sag further south across the Central Plains on Thursday.
Surface wise, a large area of high pressure is centered over the mid Atlantic states, with a ridge axis nosing southward into the Florida peninsula.
302 PM CDT Wed Jun 28 2017 The recent cooler than normal, and mostly dry period has come to end today. An area of high pressure that brought the cool weather to the region for the first part of the week was moving off of the Virginia and North Carolina coast. The anticyclone or clockwise flow around it has returned a southeasterly flow over the Tennessee Valley. This more southerly flow, along with near unlimited sunshine has resulted in warmer temperatures - getting closer to seasonable norms for this time of year. The warmer trend will continue, with lows only in the mid/upper 60s - in comparison to 50s the past few nights.
137 PM EDT Wed Jun 28 2017 Canadian high pressure will drift offshore the Mid-Atlantic coast tonight. High pressure will extend into the region from the east on Thursday.
The recent cooler than normal, and mostly dry period has come to end today. An area of high pressure that brought the cool weather to the region for the first part of the week was moving off of the Virginia and North Carolina coast. The anticyclone or clockwise flow around it has returned a southeasterly flow over the Tennessee Valley. This more southerly flow, along with near unlimited sunshine has resulted in warmer temperatures - getting closer to seasonable norms for this time of year. The warmer trend will continue, with lows only in the mid/upper 60s - in comparison to 50s the past few nights.
High pressure over the Southeast US will build, increasing the pressure gradient across the Valley. Otherwise, the previous suite of TAFs remains largely unchanged, with surface and mid- level low pressure producing another round of convection this afternoon. Although the aforementioned 500 mb trough will persist on Thursday, the convection will decrease to more isolated levels as drier air begins to work into the region and precipitable water values fall to below two inches.
Brief periods of elevated fire weather conditions are anticipated over and east of the mountains ridges each afternoon and evening. WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO At 130 PM, Low amplitude ridging remained in place over the Southwest US. As expected temperatures are noticeable cooler than this time yesterday, with some locations over the valleys running 10-15 degrees F cooler than this time yesterday. The low stratus currently hovering off the coast should make a push inland after sunset, bringing increasing low cloud cover to the coast and western valleys through early Thursday morning. Patchy dense fog is possible over the higher valley terrain.
245 PM EDT Wed Jun 28 2017 High pressure will yield fair weather today through early Thursday, though an isolated shower or thunderstorm cannot be ruled out around the New York Thruway and points north today as a weak disturbance passes.
Weak troughing over the western Gulf lifts northeast and begins to dampen through the near term, bringing more numerous shower and thunderstorm activity tonight into Thursday, especially along and southwest of a Waynesboro, AL to Pensacola, FL line. In terms of temperatures, with extensive cloud cover and ample moisture in place, expect overnight lows tonight to remain mild, in the low to mid 70's. Afternoon highs tomorrow only reach the low 80's, albeit a very humid low 80's.
1215 PM CDT Wed Jun 28 2017 Main story tonight has been the convection ahead of short wave and associated trof. Convection will continue to move east and we may see a few lingering showers in the morning, but main story will be the trof passing through the area and swinging the winds around to the west northwest. Temperatures will be comprable to those of yesterday, but will feel a little cooler with the northwesterly surface flow. Trough digs into the northern Rockies and northern High Plains on Thursday.
348 PM PDT Wed Jun 28 2017 Dry and warm conditions continue through the upcoming weekend as a ridge of high pressure dominates the area. Another day of clear skies and warming temperatures as a ridge of high pressure shifts on to the West Coast. The cooling that resulted from a trof passage earlier this week will now transition back to warming as the West Coast ridge pattern rebounds.
Storms expected to continue to persist until mid-evening, then models build upper level ridge into Nebraska, and that may supress convection. Deterministic and ensembles all develop storms along lingering boundary and additional developing expected along psuedo warm front across northern NE.
A trough of low pressure remains over the region today, with a stalled boundary across Lemhi County into southwest Montana. A wave of energy on the back side of the low pressure system will move south out of Canada into northwest Montana this evening, shifting into west central Montana overnight.
338 PM CDT Wed Jun 28 2017 (Tonight through Thursday Night) Ridging will remain in place through the next 36 hours allowing for hot and dry conditions to persist. Low temperatures Thursday night should drop into the low to mid 70s in most areas.
120 PM EDT Wed Jun 28 2017 High pressure will maintain dry weather today. Dry weather and mostly sunny skies today as high pressure slides across the region.
626 PM EDT Wed Jun 28 2017 High pressure will move off the eastern seaboard later today setting up a warmer and more humid airflow beginning on Thursday.
Thursday morning will be clear with an short wave ridge aloft. Meanwhile, high pressure will be poised to head south and east out of southern Saskatchewan. This high will head down into the Upper Midwest on Sat providing the region with a dry and relatively cool start to July. the late weekend through midweek period will be characterized by a building ridge to the lee of the Rockies moving over the Northern Plains. The next chance for thunder would likely be on Wed, as the upper ridge begins to break down. Challenge once this clears tonight and high pressure moves over the region will be fog potential, which latest MOS guidance is already picking up on.
SHORT TERM (Now through Thursday night): A seabreeze early this afternoon initiated another round of showers and thunderstorms across the coastal counties with locally heavy rainfall of 1 to 2 inches across portions of the lower Rio Grande Valley. Weak mid-level trough axis will continue to linger along the lower TX coast through much of the forecast period and moisture should be deep enough to keep slight to chance PoPs in the forecast for the eastern half of the area. and low pressure deepens over the Central Plains.
250 PM EDT Wed Jun 28 2017 Scattered showers and isolated thunderstorms will end this evening as a trough exits the coast. A warm front will approach on Thursday and bring increasing chances of rain during the afternoon and especially the nighttime hours.
The large scale pattern will be slowly progressive and gradually reamplify as an upper trough passes through the Great Lakes region during the upcoming weekend. Late in the period and beyond, the pattern is likely to transition to a typical mid-summer regime with a the main westerlies across southern Canada, and a large broad anticyclone centered over the intermountain west. The risk of tornadoes will also be present, mainly with any storms near the warm front lifting into the area.
343 PM CDT Wed Jun 28 2017 The majority of convection has remained offshore today aligned roughly along a weak trough extending across the northern and northwestern gulf coast. The aforementioned trough is progged to remain nearly stationary overnight before beginning to lift off to the northeast Thursday bringing the highest moisture with it. Thus, the highest precipitation chances will be across acadiana with POPs decreasing to the northwest.
334 PM EDT Wed Jun 28 2017 High pressure will move off the eastern seaboard later today setting up a warmer and more humid airflow beginning on Thursday.
414 PM CDT Wed Jun 28 2017 A weak upper low just off the Texas coast has provided some enhanced vertical ascent that has resulted in widespread showers and thunderstorms over the Gulf of Mexico. Showers and thunderstorms should spread farther north across the area Thursday as the upper trough moves east along the Gulf coast and a weak front near the coast moves northward.
1101 AM MDT Wed Jun 28 2017 Another upper level trough will drop down from the northwest today with the support of a 90kt jet streak. As the trough moves through, enough instability and daytime heating will allow a few showers and storms to form favoring our northern areas.
413 PM EDT Wed Jun 28 2017 High pressure remained in control for the day as it continues to shift eastward away from the region. This will allow for warmer temperatures and higher humidity values to start advecting into the region after this point. For tomorrow, temperatures will rise to at or above seasonable normals, in the mid and upper 80s, but higher humidities will make it feel warmer. An upper level low is expected to become closed off along the Gulf of Mexico coast overnight as it slowly shifts northeast through the day Thursday. Mild conditions return for Thursday night, with lows in the mid and upper 60s, with cooler temps expected for the deeper valleys.
Despite the cooler temps, min RH values will drop to 15-20 percent for FWZ 306, so mentioned an elevated fire weather threat in the FWF. Highs will be around 10 degrees cooler. Dewpoint depressions will not be high owing to the cooler temps, especially over the plains, so there is generally less threat of strong downdrafts.
An amplified upper ridge over the Gulf of Mexico northward through the TN and OH valleys will provide subsidence, warmth and dry weather through Thursday. Overnight lows will remain in the lower 60s tonight, with more very warm temperatures on Thursday with highs back into the middle to upper 80s.
717 PM EDT Wed May 10 2017 Mid cloud will steadily thicken through the first half of the night as moisture increases north of low pressure tracking into the Ohio Valley. The ridge is amplifying, inducing greater production of high clouds over the region. The ridge amplification is contributing to an increase in the anti- cyclonically curved upper-tropospheric jet. As the changing kinematics continue to increase the dynamic response, the lower-tropospheric frontal zone will gain much greater definition across southern Lower Michigan overnight. As this occurs, the low-level circulation center is expected to intensify, as well.
High pressure aloft will settle across the Great Basin Thursday.
548 PM MDT Wed May 10 2017 00Z TAF CYCLE The vigorous upper low is currently centered over the forecast area but will continue to move ENE during the next 24 hrs. Impacts from the low will become less and less. A potent upper level low pressure system over central New Mexico this afternoon will exit northeastward into Oklahoma late tonight. Some showers and thunderstorms will linger into Thursday from the northern mountains eastward as moisture wraps around the exiting low pressure system. A ridge of high pressure will cross at the end of the week with warmer temperatures, though a few showers and storms may return each afternoon in the northern mountains.
This was in association with weak upper level short wave energy, which is ahead of a strong upper low system that will move through AR on Thursday and bring much more convection.
530PM UPDATE: With the upper level ridge moving into the area, the inherited forecast is in excellent shape, with no major updates necessary. Hickford An advancing upper level ridge extending into northeast Montana will lead to dry weather conditions tonight and on Thursday. In fact, high temperatures are expected to reach the high 70s by late Thursday afternoon. It would not even be surprising to see an isolated reading in the low 80s. The upper flow pattern for Thursday night will be an amplified ridge axis moving east across the Montana prairie, pushed along by a rather large and wet western trough.
Finally, a cold front will veer the winds around to northwest then north during the day Thursday. This area is downstream from a large upper low centered over New Mexico, has a healthy amount of low level moisture that remains in place despite the early morning MCS that moved across the area, and has an elevated mixed layer spreading northward from the Permian Basin. That timing seems about right, but with the upper low still the west it seems prudent to hang onto a 20-30 percent chance mention this evening. The upper low is progged to move across the Panhandle on Thursday. The low moving out onto the High Plains will usher a cold front south through the forecast area during the day, setting up a pretty good gradient in the high temperature forecast with lower 70s northwest to upper 80s southeast.
Light rain remains out ahead of the main upper trough under the right rear quadrant of the exiting upper jet. This will exit along with the upper trough. but that should gradually dissipate in the afternoon as high pressure builds south.
827 PM EDT Wed May 10 2017 High pressure remains parked over the area and will continue to produce rain-free conditions. High pressure over the area will keep pleasant weather conditions across the region for the next several days.
955 PM EDT Wed May 10 2017 High pressure will prevail through Thursday night as a stationary front remains to the north.
731 PM EDT Wed May 10 2017 Shower and thunderstorm chances will increase tonight as a warm front works north into the forecast area. Warm front located from southern Iowa into central Illinois will continue to work northeast and should push the bulk of this precip out of the area. Severe threat contingent on upstream organization and location of warm front which should lie near our SW areas. Clouds and slightly cooler air will allow for temps to remain in the 60s.
1200 AM EDT Thu May 11 2017 Area of rainfall anchored north of low pressure tracking across Indiana will expand across the southeast Michigan airspace early this morning. The ridge is amplifying, inducing greater production of high clouds over the region. The ridge amplification is contributing to an increase in the anti- cyclonically curved upper-tropospheric jet. As the changing kinematics continue to increase the dynamic response, the lower-tropospheric frontal zone will gain much greater definition across southern Lower Michigan overnight. As this occurs, the low-level circulation center is expected to intensify, as well.
834 PM EDT Wed May 10 2017 Aviation A wave of low pressure will move by just south of Michigan tonight.
1037 PM CDT Wed May 10 2017 High pressure will remain in place across the TN Valley through the overnight period. An amplified upper ridge over the Gulf of Mexico northward through the TN and OH valleys will provide subsidence, warmth and dry weather through Thursday.
Quiet weather is expected over the short term as a disturbance shifts further away from the area, allowing a ridge of high pressure to continue building in from the west. Models are in general agreement Thursday on daytime highs with seasonable readings in the upper 60's across and east of the Coteau to above average readings elsewhere in the low to mid 70s. High pressure slides further into the area resulting in generally light winds, even variable at times. When the period opens, high pressure is over the region, keeping things warm and dry.
High pressure was slowly slipping east allowing for a low pressure system and its associated cold front to approach the two state area later tonight. Thursday a cold front is forecast to sweep across the region with showers and isolated tsra expected.
740 PM EDT Wed May 10 2017 A surface pressure ridge will extend along the Gulf Coast through Thursday and direct a warm and dry west flow into the forecast area. Aloft, ridging will dominate and help suppress thunderstorms.
Upper level ridging over the Northern Rocky Mountains will keep dry and mostly clear to partly cloudy conditions intact overnight.
Mins tonight in the L-M60s with maxes tomorrow ranging from the U80s along the immediate coast to L-M 90s over western sections of the coastal counties and inland as high pressure continues to dominate the local pattern.
Many areas as of 8 PM were running 10 to 20 degrees cooler than 24 hours ago. Considering the ongoing delta breeze and the deepening marine layer from the trough there is a chance low clouds could make its way up around Redding in the morning.
/issued 322 PM CDT Wed May 10 2017/ Cloud cover continues to increase as moisture increases throughout the column in response to the approaching upper low currently over NM. Upper ridge axis centered over MS/AL continues to try to hold its ground against this approaching upper low. Nonetheless, a few shwrs/isold tstms have developed along the wrn periphery of the ridge, as perturbations associated with the low continue to erode away at it. The upper low will move into the Srn Plains tonight and begin to bring better coverage of convection to the region by Thursday. Dryline will shift into our region by early Thursday afternoon and provide a focus for convective initiation, as the base of the upper trof moves into central TX.
Louis, with a warm front draped across central IL/IN and into southern OH. A complex of storms continues around the triple point across central and northern IL, with coverage gradually filling in along the trailing cold front into MO. Showers & storms are still progged to develop this afternoon/evening mainly across southern IN/northern KY (along and north of I-64) and points north closer to a warm front stretched across the Midwest. The rest of central KY should stay mainly dry under stronger ridging through this evening. Tonight the ridge will begin to break down allowing the front and associated convection to sink south into our region late tonight.
701 PM EDT Wed May 10 2017 High pressure will remain over the Northeast United States tonight through Thursday, as a frontal boundary extends from the Ohio Valley southeast to off the coastal Carolinas.
915 PM EDT Wed May 10 2017 High pressure will remain over the Northeast United States tonight through Thursday, as a frontal boundary extends from the Ohio Valley southeast to off the coastal Carolinas.
1023 PM EDT Wed May 10 2017 Upper level ridging has kept the forecast area dry today but will begin to see this ridge break down late tonight as a trough digs into the Southern Plains. Additionally, a cold front from the north will begin to push to the south during this timeframe. Chattanooga Airport, TN 61 88 63 78 / 0 0 10 80 Knoxville McGhee Tyson Airport, TN 61 85 63 76 / 0 10 20 80 Oak Ridge, TN 61 85 63 75 / 0 10 20 80 Tri Cities Airport, TN 59 83 61 75 / 10 20 30 80.
A large mid/upper ridge extends from the Gulf Of Mexico to the Great Lakes which is providing a dry NW flow aloft over the area. A few high clouds will traverse around the ridge over the area.
833 PM EDT Wed May 10 2017 High pressure will remain over the Northeast United States tonight through Thursday, as a frontal boundary extends from the Ohio Valley southeast to off the coastal Carolinas.
Quiet conditions this evening as the area is under a southwest flow ahead of the next upper low moving down the PACNW coast.
1218 AM EDT Thu May 11 2017 Upper level low pressure will remain south of the region into Thursday.
1232 AM EDT Thu May 11 2017 Rain chances have returned today with advancing low pressure. The midnight update featured adjustment to precip probabilities as low pressure emerging from the midwest is shunting a surge of warm and moisture toward the region with its eastward advance. Otherwise, showers are likely as the mid level trough slides over the region later this morning.