Aikyam-Lab/Synoptic-Bench huggingface dataset:
338 PM CST Thu Nov 16 2017 Forecast Highlight: 1: Strong cold front still scheduled to plow through KS late Fri Night & early Sat morning. The trof will move slowly E & should extend from eastern Nebraska to western KS by which time it will have broadened. With the surface trof remaining well to the west of KICT Country, pronounced lower-deck moist advection would commence this evening & continue thru Fri. The slow eastward trek of the trof would likewise push the lower- deck moisture axis east Fri afternoon. Fri Night & Sat: A strong, positively-tilted upper-deck trof that this afternoon is situated just off the WA/OR coast will surge E/SE, reaching from central Canada to the Central/Southern Rockies Fri Night. The wave will kick a strong cold front SE across KS.
350 PM EST Thu Nov 16 2017 High pressure will allow for dry conditions through Friday.
246 PM CST Thu Nov 16 2017 Surface gradient over the central plains region will continue to tighten into tonight as high pressure moves off toward the Ohio Valley and a cold front approaches from the northern plains. Southerly winds will bring increasing moisture and warmer temperatures into the area tonight into Friday in advance of the cold front. Some light rain or drizzle may reach parts of southeast Nebraska and southwest Iowa by daybreak on Friday then shift east of the area by early afternoon as the cold front moves into the southeast portion of the forecast area. A better chance of rain or a rain snow mix is expected Friday night as the area comes under stronger forcing aloft associated with a jet max moving across Kansas and ahead of an upper trough over the northern plains.
225 PM MST Thu Nov 16 2017 Latest SFC analysis shows a warm front extending from a low pressure center in central Montana to just north of the Black Hills and then arcing to the northeast toward Faith. High temperatures have reached the lower 70s on the plains of southwestern South Dakota. Tonight, the upper ridge will continue to shift off to the east of the forecast area as the upper trough drops southeastward toward the northern plains. On Friday, the upper trough will continue to move southeastward across the northern Plains as the main cold front crosses the forecast area. A narrow band of moderate to strong 850-700mb frontogenesis is forecast to cross the region rather rapidly behind the cold front.
1008 AM MST Thu Nov 16 2017 Today through tomorrow, with upper level ridging ahead of the trough, drier and warmer conditions will move into the area which will bring us 10 to 15 degrees above average highs for this time of year. Expecting some rain showers at first followed by mixed wintry precipitation as temperatures drop below freezing. Main concern for the cold front passage is winds.
A deep surface cyclone will develop/move into Kansas tomorrow, and this will cause surface winds to switch to more southwesterly, which will in turn result in relatively dry, breezy, and warm (hot in the far southwest) conditions.
240 PM EST Thu Nov 16 2017 A high pressure system will build in tonight providing clearing. The high remains on Friday.
323 PM CST Thu Nov 16 2017 A narrow ridge of high pressure is located over IL and the Mississippi River Valley this afternoon/evening. The high pressure and relatively subsident air effectively trapped a layer of moisture over the region, resulting in a more cloudy day in the northern half of the state. By morning, winds come around to more southerly behind the ridge as the next front moves into the Midwest.
Bigelbach PREVIOUS DISCUSSION: Satellite imagery shows a shield of high clouds over the region early this morning as a low pressure system tracks through the area with first a warm front, and then a cold front late in the day. Latest 00z model guidance continues to support a building upper level ridge across the western U.
233 PM EDT Sun Jul 9 2017 More humid air will begin to make a return on Monday as high pressure slips off the eastern seaboard. Highs will be a tad warmer than today, returning to within a degree or two either side of normal for the second week of July.
While the apex of this expected bow echo is projected by most of the high-resolution models to stay to our north, they do suggest at least part of the line moving into northern parts of the CWA overnight. The incoming cold front and/or the residual outflow boundary from the earlier storms will provide the focus for another line of storms to form across the northern third of the state around mid afternoon, dropping southward.
200 PM EDT Sun Jul 9 2017 High pressure tonight. A high pressure system will provide another dry and cool night across the area. The upper trof moves east away from the area loosen its influence on the local weather.
An upper level high will extend fm the Great Basin into Colorado with weak flow aloft. However still expect sct aftn high based storms over the higher terrain. First off, however, Monday looks like it will be another scorcher as the present upper level ridge covers Colorado with very warm temperatures.
Scattered thunderstorms have also developed along the periphery of the ridge in the Atlantic and could hold together enough to impact the offshore zones. Tomorrow the upper level ridge will attempt to build back in from the east, and scattered thunderstorms should develop around the periphery similar to what is occurring further out to sea today.
341 PM PDT Sun Jul 9 2017 Strong high pressure will weaken and move east the next few days allowing for some minor cooling each day. Strong high pressure over the region is providing another very hot day across the lower elevations. The ridge has weakened a bit and this is evident in 24 hour temperature trends down slightly. The ridge will weaken the next few days as an upper trough moves over the Pacific Northwest.
335 PM CDT Sun Jul 9 2017 Mid-afternoon sfc analysis high pressure centered over the ern Gulf maintaining a moist onshore flow across the region. The region looks to remain in a rather persistent pattern through the early part of the coming week with the forecast area lingering on the edge of weak mid/upper-level troffing or zonal flow for the next several days. Afternoon highs will remain mostly seasonal with temps peaking in the lower/mid 90s. Perhaps a break is in store for the nrn portions of the area by late week as ridging over the wrn CONUS tries building ewd through the srn Plains.
High pressure remains in control tonight and tomorrow resulting in pleasant weather. High pressure remains in control with sunshine and scattered cumulus in the afternoon. Upper-level troughing pattern lifts off to the northeast resulting in heights building some through the day with 850mb temperatures expected to increase by a degree or two. Therefore, expect high temperatures to be generally a couple degrees warmer on Monday than we had on Sunday. Although it will be slightly warmer, the good news is that dew points remain lower and we will have another day of less muggy conditions.
1225 PM CDT Sun Jul 9 2017 850 mb warm front is working its way into the area from the west this morning. 1020 mb high pressure over central IL early this morning was providing light winds and fair wx over much of area with fairly comfortable dewpoints in the upper 50s and lower 60s. Very warm and humid on Monday with highs around 90F and dewpoints mostly in the lower 70s giving afternoon heat indices peaking in the mid to upper 90s, highest from Galesburg to Lincoln to Effingham sw. The 00Z forecast models and their ensembles are in good agreement that a subtropical mid/upper level ridge (596 dm 500 mb high) currently over the central and southern Rockies, will flatten out during next few days and extend eastward into the mid MS river valley.
258 PM CDT Sun Jul 9 2017 Drier air associated with high pressure continues to filter into the ArkLaMiss from the north today. Temperatures will be 1 to 2 degrees warmer as upper level heights build over the region.
439 PM EDT Sun Jul 9 2017 More humid air will begin to make a return on Monday as high pressure slips off the eastern seaboard. Highs will be a tad warmer than today, returning to within a degree or two either side of normal for the second week of July.
645 PM EDT Sun Jul 9 2017 High pressure will build into the region tonight into Monday. High pressure will build southeast into our region tonight into Monday. Aloft, a deep trof will dominate the weather pattern along the East coast. A good radiational cooling expected tonight with ridging well established. High temperatures on Monday will vary from the mid 70s in the mountains to the lower 90s in the Piedmont. This will allow high pressure at the surface to cross the region and eventually give way to a large Bermuda high off the coast.
310 PM CDT Sun Jul 9 2017 H5 analysis from this morning had a high located over southern Utah with a ridge extending north into the Yukon and north slope of Alaska. A closed low was located off the southern coast of Alaska. East of the ridge, a closed low was located over northern portions of Hudson Bay with a trough extending south into the Mid- Atlantic states and Carolinas. Across western and north central Nebraska, winds west of the trough took on more of a westerly component, while winds along and east of the trough were nearly calm to light southerly. Based on the guidance trends, I did go ahead and lower temps slightly from the inherited forecast, however, they were kept in the higher end of guidance, especially in the south where the forecast frontal position is uncertain.
/26/ Drier air associated with high pressure continues to filter into the ArkLaMiss from the north today. Temperatures will be 1 to 2 degrees warmer as upper level heights build over the region.
219 PM EDT Sun Jul 9 2017 Aviation An area of high pressure over the Central Appalachians will track slowly east through today.
309 PM EDT Sun Jul 9 2017 High pressure will move offshore during the early part of the week. A cold front will drift south from the Great Lakes during the middle of the week, but stall and likely remain near or north of the area.
An upper level trough is moving in, bringing in relatively cooler temperatures across the area, especially in Delta breeze influenced areas. At 2:00 pm, downtown Sacramento was 97, 4 degrees cooler than yesterday. At Fairfield, it was 93, 8 degrees cooler. Redding was 5 degrees cooler at 101.
303 PM EDT Sun Jul 9 2017 Period of unseasonably dry weather will come to an end on Monday with the passage of a warm front.
316 PM MDT Sun Jul 9 2017 Upper level high pressure just west of the 4-corners this afternoon, with pocket of drier air rotating southward across Colorado. Still not much forcing for precip other than terrain/instability, so suspect storms will stay close to the higher terrain, with most models suggesting best coverage of storms along the Continental Divide. Max temps Mon will rise a degf or two at many locations as 700 mb temps peak, and the usual spots along the lower Arkansas Valley will likely end up around 100f by late afternoon.
Ridge of high pressure out over the Western third of the CONUS is progged to build eastward into the Plains for the week ahead. an isolated potential for thunderstorms will be possible mainly during the daytime heating hours over the higher terrain locations. latest model solutions try to shift the dome of high pressure back westward with a possible backdoor cold front sagging southwest into the CWA.
expect VFR conditions to prevail the rest of the afternoon into this evening as the 500mb ridge across the southwest United States extending into southwest Texas provides subsidence across the Rio Grande valley and northern ranchlands. As the associated mid-level inverted trough moves further inland today, ridging aloft builds into the area from the north (with the 00Z NAM even developing a smaller-scale H5 high center over the CWA on Monday).
1124 AM MDT Sun Jul 9 2017 Late morning GOES-16 water vapor loop shows a stout upper ridge centered over the Intermountain West. The 14Z HRRR composite reflectivity shows convective initiation over the high terrain between 18Z and 20Z, with scattered coverage spreading east/southeast across the plains after 21Z. Added gusty winds with the high- based convection, which will produce only light rainfall.
304 PM MDT Sun Jul 9 2017 Upper ridge axis extends from Four Corners region to the northern Rockies. Mid/upper level moisture and weak disturbances rotating up and over the ridge across Wyoming have triggered isolated to scattered afternoon high-based convection. The other story has been the hot temperatures, especially across the high plains. The latest short range model guidance progs the upper ridge to the west to weaken as it shifts east across the Front Range and high plains. Monday's high temperatures will be somewhat cooler compared to today, with upper 80s-mid 90s.
257 PM CDT Sun Jul 9 2017 Issued at 257 CDT SUN JUL 9 2017 Heat remains the primary concern through the next several days as ridging over the western CONUS shifts eastward, sending a ~594 dm high over the Plains through midweek.
312 PM EDT Sun Jul 9 2017 High pressure tonight. A high pressure system will provide another dry and cool night across the area. The upper trof loosens its grip over the area this week. This puts the area in the cross hairs for several disturbances to rotate though on the back side of the trof.
327 PM EDT Sun Jul 9 2017 More humid air will begin to make a return on Monday as high pressure slips off the eastern seaboard. Highs will be a tad warmer than today, returning to within a degree or two either side of normal for the second week of July.
A ridge of high pressure positioned over the Great Basin will begin to give way to a passing trough migrating through WRN Canada over the next couple of days. Satellite and radar imagery was showing an area of enhanced convection shifting ENE through the CNTRL mountains toward SW Montana coincident with a sub-tropical disturbance which was rotating over the top of the aforementioned ridge. As for Monday, the Canadian trough begins migrating east through BC while an accompanying surface front shifts east through the area between noon and 3pm.
Models advertize another hot day for Monday, however the high pressure ridge will be giving way to a low pressure trough moving in from the west.
316 PM PDT Sun Jul 9 2017 Temperatures are running a few degrees cooler than this time yesterday at most inland locations due to the influence of an upper level trough moving through aloft yielding a more westerly versus southwesterly flow for most locations. The exceptions are along portions of the coast that were under the marine layer yesterday and across Modoc County, where temperatures are 1-3 degrees warmer. Winds are becoming more gusty this afternoon into this evening due to the influence of this trough and, with low relative humidities, this a fire weather concern, particularly for the Ana Fire near Summer Lake.
243 PM EDT Sun Jul 9 2017 A front will remain stationary near the coast through Monday while weak high pressure builds north of the area. The front will dissipate by Monday night, while the high quickly moves east. Then high pressure over the western Atlantic will provide southwest flow over the Carolinas through the rest of the week. High temps will be similar to today or perhaps a degree or 2 warmer.
Strong high pressure aloft will gradually weaken early in the week.
1218 PM CDT Sun Jul 9 2017 Quiet weather continues across the region today, with high pressure pushing southeast of the area through the day. Temperatures should be around or just a touch above climatological averages, with highs in the low 90s with abundant sunshine. Southerly flow will prevail at the surface through the coming workweek, as ridging builds aloft. This will help push temperatures into the low to mid 90s through the week, with plenty of humidity. Afternoon heat indices will range from the mid 90s to low 100s each day, with the higher values north of I-44.
157 PM EDT Sun Jul 9 2017 High pressure will build across the region through tonight and then shift to the mid Atlantic coast Monday. An area of weak low pressure will move over the western Great Lakes on Monday causing a warm front to develop over the local area.
102 PM EDT Sun Jul 9 2017 VFR conditions expected for the rest of today with high pressure in control.
SHORT TERM (Tonight through Monday night): 500mb ridge across the southwest United States extending into southwest Texas has provided some subsidence and drier air across portions of south-central Texas and the Rio Grande plains this afternoon. Temperatures will be warmer Mon afternoon than they have been the past couple of days with less cloud cover and low rain chances.
246 PM CDT Sun Jul 9 2017 A pleasant night is ahead weatherwise as high pressure spanning KY through north AL and MS has brought a drier air mass to the region.
220 PM EDT Sun Jul 9 2017 High pressure will build into the region tonight into Monday. High pressure will build southeast into our region tonight into Monday. Aloft, a deep trof will dominate the weather pattern along the East coast. A good radiational cooling expected tonight with ridging well established. High temperatures on Monday will vary from the mid 70s in the mountains to the lower 90s in the Piedmont. This will allow high pressure at the surface to cross the region and eventually give way to a large Bermuda high off the coast.
1240 PM CDT Sun Jul 9 2017 Temperatures are already in the low to mid 90s at many stations along and west of the Missouri River. An area of low pressure currently over northwest North Dakota will track southeast today. A cold front, currently over Montana, will slide southward across the CWA later this afternoon. Thunderstorms will be possible along the cold front late this afternoon through this evening. Cooler temperatures are expected on Monday with highs in the mid 80s, to the mid 90s.
1225 PM CDT Sun Jul 9 2017 A large amplitude ridge with a 4 standard deviation in the 500mb heights will start to move to the east over the area in the next 24 hours. The high pressure currently over MO will shift to the SE creating a pressure gradient of southerly winds from the Gulf of Mexico up into southern Minnesota.
The general trend will be to shift moisture east and out of our CWA tonight as a Pacific upper trough comes inland.
148 PM EDT Sun Jul 9 2017 High pressure and a dry airmass will provide abundant sunshine today. Conditions will begin to change tonight as high pressure moves east and moisture and forcing increase along a developing frontal boundary.
357 PM EDT Sun Jul 9 2017 Departing high pressure will still manage to keep the weather quiet through most of Monday.
251 PM EDT Sun Jul 9 2017 High pressure builds in from the west to start the week.
A weak upper level trough will move into the area late tonight and Monday morning, deepening the marine layer. The approaching upper trough has had some expected effect--there are bands of mid and high clouds moving through the area, and clouds have appeared over the Olympics and North Cascades-- as well as some unexpected ones--currently the coastal waters are clearing from the northwest. A weak upper level trough will move through Western Washington tonight and Monday. At the lower levels onshore flow will increase. Highs on Monday will be about 5 degrees cooler than today, in the 60s to lower 70s. After the upper trough passes, the marine layer will become thinner.
155 PM EDT Sun Jul 9 2017 Departing high pressure will still manage to keep the weather quiet through most of Monday.
608 PM EDT Sun Jul 9 2017 High pressure builds in from the west to start the week.
506 PM EDT Sun Jul 9 2017 More humid air will begin to make a return on Monday as high pressure slips off the eastern seaboard. Highs will be a tad warmer than today, returning to within a degree or two either side of normal for the second week of July.
Another active, yet so far, middle of the road North American Monsoon day across much of the high country. Through the work week models continue to keep the ridge associated with the North American Monsoon in place through the period. Cooler temperatures and increased low level moisture are expected early this week, though gusty and erratic outflow winds should still be anticipated. The cooler temperatures and increased moisture will result in higher minimum relative humidity values and higher chances of wetting rains.
257 PM CDT Sun Jul 9 2017 700 MB trough across eastern Oklahoma contributing to scattered thunderstorm development across much of east Texas and north Louisiana. 8 inches and temperatures in the lower 90s. High temperatures throughout the forecast period to average in the lower 90s each day with lows in the mid 70s. At the same time, northwest flow aloft will weaken in favor of strengthening ridge of high pressure. However, thunderstorms chances to increase late in the work week as upper-ridge retrogrades westward and a frontal boundary approaches from the north.
151 PM EDT Sun Jul 9 2017 Surface analysis this afternoon showed high pressure centered over the lower Ohio Valley. As a low pressure system tracks across the lower Great Lakes, breezy southwest winds 20 to near 30 mph are forecast to develop by Monday afternoon. Monday night will be mild and muggy with lows staying in the low 70s for most locations.
210 PM MDT Sun Jul 9 2017 Water vapor shows upper ridge axis extending through the Northern Rockies, with short wave activity noted from western SD westward to far eastern ID. At the surface, trof has moved through all but our far south central SD zones. Temps are very hot early this afternoon give excellent mixing and thermal ridge overhead. Temps will be slightly cooler on Monday, with another ridge topping short wave bringing a few storms late in the day. Upper ridge then expected to flatten through midweek, although temps will still remain well above average. Upper ridge then expected to rebuild and possibly bring more very hot weather to the region by the end of the week/weekend. Slightly cooler wx expected through mid week, although temps will still remain well above average.
Given the high instability, there could be an isolated strong to severe storm this afternoon. Overnight lows will generally be in the low to mid 70s.
322 PM EDT Sun Jul 9 2017 Departing high pressure will still manage to keep the weather quiet through most of Monday.
High pressure remains to our northwest, centered over southern Utah.
214 PM MDT Sun Jul 9 2017 Latest upper air analysis shows the ridge centered over the Four Corners Region. A minor short wave trough in the northwest flow around the ridge over the Northern Plains has lead to some storm activity there. Over the Central High Plains closer to the ridge water vapor showed a dry air mass so there has been no storm activity. Meanwhile a cold front will approach the forecast area from the north, but will be pushed to the east prior to entering the forecast area.
112 PM EDT Sun Jul 9 2017 High pressure today. High pressure will bring quiet weather today and tonight. Winds will turn to the south tonight as the high drifts east. The upper trof moves east away from the area loosen its influence on the local weather.
The ridge axis has shifted slightly to the east today putting the Northern Rockies more under a southwesterly flow pattern. A plume of moisture has traversed under the ridge and is interacting with an unstable atmosphere from Lemhi county into southwest Montana. This feature will knock down the ridge causing the upper level flow to become more westerly. A weak cold front associated with the disturbance will cool temperatures to seasonal readings.
Rain chances all but disappear for the remainder of the work week as the center of the high pressure ridge near the four-corners flattens and broadens to encompass much of the southern half of the country. This readjustment of the upper level pattern will allow drier air to move in aloft along with warmer temperatures.
637 AM EST Mon Mar 5 2018 High pressure will bring fair skies and dry weather Monday.