Aikyam-Lab/Synoptic-Bench huggingface dataset:
1022 AM CST Tue Feb 14 2017 Low pressure continues to move along the Gulf Coast. Pine Bluff, Monticello, and Camden are in the lower 50s. Rain wl cont to overspread the rest of the area today, with the highest QPF amts still expected to occur along and S of the I-40 corridor.
1257 PM MST Tue Feb 14 2017 Upper level ridging is building eastward into the Northern and Central Rockies toward the plains, with a closed upper low over Texas/Oklahoma. Mixing heights are limiting potential gusts this afternoon, however we will still see 15-20kt winds prevail through the early evening before decoupling of the low levels takes place. Some warmer guidance is indicating potential for mid 60s.
Patchy fog and stratus formed earlier in parts of the Lower Treasure Valley and along the Snake River in the Upper Treasure Valley. Upper ridge over SE Oregon and SW Idaho will shift east on Wednesday. The winds should be enough to weaken the inversion, except in the Lower Treasure Valley and Upper Weiser Basin where the inversion will likely persist.
239 PM CST Tue Feb 14 2017 Large area of precipitation will continue to move across the area the rest of the afternoon and this evening as the upper low continues to slowly move across Oklahoma/north Texas. Most of the precipitation continues to be rain but for locations near the low snow has been occurring with light accumulations on grassy and elevated surfaces. The rain mixing with snow is expected to continue as the low moves across the area despite sfc temps currently in the low to mid 40s across parts of the area. Observations have shown sfc temps dropping into the 30s as the low slowly moves east which has helped with the occurrence of snow. The precipitation is expected to slowly decrease/end from N to S/SE through this evening with all precipitation ending overnight as the upper low exits the area.
Trough across the Great Lakes will circulate a disturbance past well to the east this evening, enough to keep some cold advection going and mixing gustier winds through the evening over areas east of I-29. Ridge will shift east and allow southerly flow to develop on Wednesday. Has routinely been mixing a bit deeper than expected during our warmer period, and have shaded temps a bit to the upper end of guidance, as any deeper mixing will introduce a better westerly component and utilize the stronger warming trend aloft.
950 AM MST Tue Feb 14 2017 High pressure will be in control of southeast Wyoming and Nebraska Panhandle weather for the remainder of the week.
Expect gusty northwest winds Wednesday afternoon as the cold front pushes eastward with gusts as high as 25 mph.
Given the fact that gusts have already reached the 15-20 knot range, will maintain gusts up to 25 knots, both in WSW flow this afternoon and also NW flow tonight in wake of passing cold front. Winds will veer to WSW this afternoon and then NW late this evening as strong cold front passes. Another day with temperatures exceeding 40 degrees, ahead of a cold front which will track through southern Lower Michigan this evening. 00z Raob out of MSP showed a 925 mb temp of 4 C, and although the bulk of this warm air will sink southeast into the Northern Ohio Valley, 00z euro/RAP/Regional Gem still sporting temps of 1-3 C at 925 mb during the afternoon, and based on yesterday's results, favor warmer NAM/Euro mos guidance for Today, mid to upper 40s.
Highs still look to reach into the lower 30s north and the mid to upper 30s south. Tonight a ridge of high pressure builds into the area, settling across the western forecast area by Wednesday morning. While we have a ridge moving across the mid and high level moisture levels should keep cloud cover up.
118 PM EST Tue Feb 14 2017 Upper air pattern consists of a 500 mb ridge on the west coast and a closed low in the southern Rockies and a trough in the upper Great Lakes this morning.
400 PM CST Tue Feb 14 2017 An upper low currently moving into eastern Oklahoma will move east into Arkansas later this evening taking the rain with it. Skies will clear later tonight, allowing temperatures to fall close to the freezing mark in many locations.
1141 AM CST Tue Feb 14 2017 Surface map this morning had a cold front extending from eastern Upper Michigan through eastern Wisconsin. Temperatures as of 2 am were in the lower to middle 30s. For today, a mid-level trough and secondary surface cold front drops southward through the area this afternoon. Look for temperatures to climb into the mid 30s/lower 40s ahead of the cold front.
Additionally, PoPs have been lowered areawide in cleaning up behind the cold front and line of convection that passed through the region early this morning. Breezy north to northwest winds in wake of a strong cold front will prevail through the rest of the period as well.
Cooler, stable conditions prevail this afternoon in the wake of the early morning cold front.
214 PM CST Tue Feb 14 2017 An upper low is centered over northern TX with precipitation wrapping around the low across east TX and the TX panhandle. This upper low is an extension of an upper trough centered over the Great Lakes. A portion of the previously mentioned upper low moves eastward and becomes entrenched in the upper flow of the upper trough over the Northeast/Great Lakes region. Another portion of the upper low lags behind and stalls out over northern Mexico.
A cold front will be exiting far southeast Wisconsin early this evening. Temps will drop into the lower 20s tonight, and only recover into the upper 20s/lower 30s Wed.
Once the slow moving storm system finally moves further east into the mid-Mississippi Valley this evening and allows the ridge to take hold across Colorado, the warming trend will begin in earnest starting tomorrow. Water vapor imagery showing strong high pressure ridging aloft building over northern Rocky Mountain region with a moderate northerly flow aloft over Colorado.
319 PM CST Tue Feb 14 2017 Afternoon water vapor imagery indicates our upper low continues to pivot northeastward across North TX. Showers linger across areas north of I-20 associated with the vort max from this low and will continue into the evening. As a result, have stuck to the warmer side for overnight temperatures. As the upper low departs the region, drier air will filter into the area leading to clearing skies for Wednesday. Temperatures will be warmer but north winds will remain in place throughout the day.
256 PM CST Tue Feb 14 2017 Upper level ridging will build over the western CONUS today and tomorrow. A thermal ridge will build in its wake with H850 temps rising 5 C on Wednesday afternoon. An upper ridge will amplify across the northern branch of the upper jet across the northern plains, while an upper level trough embedded within the southern stream of the the upper jet will slowly move northeast out of Mexico into TX.
Snowmelt resulting in a shallow moist boundary layer with warmer air/stable conditions aloft will result in patchy fog and/or stratus developing tonight mainly along and east of the Missouri River. It appears the James River Valley could hold onto the lower clouds through Wednesday morning, and this can be refined later this evening as higher resolution model extends farther out through this period.
311 PM CST Tue Feb 14 2017 Tonight into Wednesday: An upper low circulation over north-central Texas with a mid- level deformation zone on the north flank, will shift eastward becoming absorbed within a deepening eastern CONUS upper trough.
231 PM MST Tue Feb 14 2017 With an upper ridge over the western CONUS, flow is northwesterly over the northern plains. Warm air will continue moving into the region as the upper ridge slowly transitions eastward.
1251 PM EST Tue Feb 14 2017 Colder air will return to the entire region as a cold front moves through the Great Lakes and Ohio Valley tonight and Wednesday.
Strong upper ridge of high pressure over the Pacific NW will flatten a bit during the period.
SHORT TERM (Tonight through Wednesday Night): The morning cold front has pushed offshore, leaving high pressure in its wake to settle over the region. High temps today were held down in the lower to middle 70s. The next 36 hours will be cooler, with low temperatures tonight in the 40s and 50s, with more 40s than 50s Wednesday night. High temperatures on Wednesday will be mainly in the 60s, slightly cooler than normal for this time of year.
Satellite imagery shows high clouds streaming into the area ahead of the low pressure system that will begin impacting the marine waters today, and the coast and inland tomorrow. A cold front will bring increasing south winds today. Models show low pressure developing along the front west of the waters Wednesday afternoon and moving northeast Wednesday night. The low could move inside of 130 W and there is some evidence a coastal jet could form Wednesday afternoon through Wednesday evening with winds above the surface of 70-80 kts.
The low level winds are shifting around as the upper low swings in overhead. Strong cold front will move through in the wake of the large precipitation field with winds becoming northwesterly with gusts upwards of 22kts for a brief period this evening. The warm front is gusting into central LA with mid to upper 60s and lower 60 dew points.
Freezing levels will not drop below 1000 ft agl until aft 12z, and that will be primarily across the Plateau area.
The upper flow across central Canada is currently northwesterly due to the positive anomaly/ridge out west. After another mild day today, a couple cooler days are expected as the forecast area gets grazed by the southwest flank of a cold air mass driven southeast by the northwest upper flow. and Wednesday A westerly flow of air is expected across the area today as a cyclone shifts east across Ontario.
Abundant moisture will begin streaming into the Northern Rockies Wednesday night while cold air will still be locked in many valleys leading to the development of light freezing rain and subsequent hazardous driving conditions.
1119 AM CST Tue Feb 14 2017 Sharp ridge over the western CONUS between Aleutian low and cutoff low over the Texas panhandle and Hudson Bay low. Even with clear skies and good insolation gusty northwest winds will advect cooler air from the northwest across western and northern Nebraska. Jet stream to the northeast keeping much cooler temperatures at bay. Tonight winds becoming light westerly downslope component as upper ridge and warmer air aloft pushes east across western Nebraska.
Cooler conditions can be expected tonight in wake of the cold front, which moved through the region this morning. Tomorrow below normal temperatures will continue with highs only reaching the low to mid 60s across most locations, and lows tomorrow night in the low to mid 40s.
237 PM MST Tue Feb 14 2017 Lingering low pressure over the Desert Southwest will bring a slight chance for showers over southeast AZ this evening.
209 PM EST Tue Feb 14 2017 Low pressure tracking eastward through the Gulf Coast States today will move through our area Wednesday morning bringing showers and thunderstorms.
The low will track east across northern AR, with precipitation ending by midnight. Should see plenty of sunshine on Wednesday, with coldest part of the air mass shifting to the east of the area and upper level ridging starting to nudge into the region.
High pressure aloft will expand across the interior west midweek, resulting in dry and stable conditions. Mid level ridging continues to expand over the area this morning allowing a dry northeasterly flow to remain in place, this on the downstream side of the axis. This ridge axis will gradually shift overhead over the next 48 hours retaining a stable and dry environment, while allowing for a net warming trend of temps. Have noted modest mixing in the lower 1kft each afternoon, and don't expect trends to change much if at all through tomorrow.
149 PM EST Tue Feb 14 2017 Low pressure to the south tonight. Cold front late tonight into Wednesday.
Skies have largely cleared out this morning across the region under a ridge of high pressure. High pressure will begin to shift eastward tonight.
A few light valley rain and mountain snow showers around today and this evening as an upper level trof exits the area. Gusty east winds Wednesday, otherwise dry and warmer conditions the second half of the week. A stronger Pacific storm system will bring a very good chance of valley rain, mountain snow, cooler temperatures and gusty winds this weekend. Weak troughiness with a few light showers around.
It was associated with a storm system over the lower Mississippi Valley. A cold front will move southeast through the area overnight and early Wednesday morning. Forecast soundings do not look particularly favorable for snow showers this time around, with moisture in the low level mixed layer being shallow and potentially not reaching the -10C level.
A strong upper ridge was positioned over Idaho this morning and will provide dry and mild weather through the short term. The ridge is progged to slide into western Montana and become positively tilted this afternoon. The ridge will then get suppressed south on Wednesday with energy streaming over the top into Canada. Will have to monitor rivers for potentially increased ice jam activity with warmer weather, along with lingering low land snow melt. Winds will increase over the western valleys tonight and continue through Wednesday night as a lee trough forms and deepens.
Dry conditions will prevail through late Wednesday afternoon as upper level ridging slowly shifts east across the Northern and Central Rockies into the high plains during the period. A weakening northwest flow aloft and much drier air in the lower/mid levels filtering southward into western Kansas will keep precip chances out of the region during the period. Although a north to northwesterly low level flow will do little to change the general air mass across the high plains tonight, decreasing cloud cover is expected, particularly across west central and central Kansas. A developing lee side trough of low pressure across eastern Colorado will create a westerly downslope flow early Wednesday and more of a southwest flow by Wednesday afternoon as it strengthens drawing warmer air into the region.
The upper level low is now pushing into western OK per water vapor imagery and will continue eastward. This will leave the Panhandles in NW flow aloft through early Wednesday before split flow occurs resulting in a ridge building into the northern plains while a southern stream trough dives into northern Mexico. The upper ridge building in will have the most influence on our weather at the surface as a warming trend can be expected.
956 AM PST Tue Feb 14 2017 High pressure will begin to break down today, but not before we have one more day of dry weather.
A cold front with this system will bring a brief spell of more seasonable temperatures and possibly a few snow flurries and lake effect snow showers tonight into early Wednesday morning.
The downsloping winds will back to southwest and increase slightly through the afternoon as a lee trough develops over the high plains. Highs will run some 10-12 degrees Fahrenheit warmer, generally in the lower to mid 60s.
MVFR with occasional IFR ceilings and visibilities in light snow expected through around 22z today at AMA where stronger dynamics with departing 700 mb trof will support upward atmospheric motions. /Issued 443 AM CST Tue Feb 14 2017/ A closed upper low will pass east across the southern Texas Panhandle or the northern portions of the Texas South Plains region today. Forecast soundings, 850 mb temps, and thickness values suggest the precipitation should be either snow or rain as temps remain just above freezing with thickness values around 544 and 546 dkm this morning and 850 mb temps around 0 to -0. A moderating trend commences Wednesday through the end of the week as an upper ridge tries to build in from the west.
1014 AM MST Tue Feb 14 2017 Dry and warmer conditions are expected in the short term period.
Yet another day where you can't go high enough with temperatures, with highs exceeding all guidance at reaching the low-mid 40s. Upper-level ridging and high pressure begin to dominate our weather Wednesday morning, leading to a pleasant but "cool" day with highs in the low-30s across western WI to the low 40s across southwest MN. An unprecedented very mild temperature event will unfold by late in the week as an anomalous upper ridge builds across the Upper Midwest.
1115 AM EST Tue Feb 14 2017 High pressure will be moving farther off the Southeast Coast today. Low pressure tracking eastward through the Gulf Coast States and a cold front dropping southeastward from the Midwest will be in the forecast area Wednesday bringing showers and possible thunderstorms.
232 PM EST Tue Feb 14 2017 More seasonable temperatures will arrive behind a cold front tonight along with a few flurries or light snow showers, espeically closer to Lake Michigan.
In Central Alabama, dewpoints south of the warm front are in the low to mid 40s. Mid level forcing will be weakening as the upper level trough is absorbed into a larger scale trough across the Great Lakes. Dry cold advection will continue Wednesday evening as high pressure moves in from the west. Temperatures may drop just below freezing for much of the northern part of the forecast area.
407 PM EST Tue Feb 14 2017 After quiet weather this evening, a cold front will cross the area Wednesday morning, with associated snow showers and squalls.
Upper-level flow has become somewhat amplified over the CONUS with a strong ridge over the western states and troughing over Ontario/Quebec into the northeastern US. This western ridge will move into the center of the country with nearly an omega block setting up.
Lows tonight should drop into the single digits above zero along the International Border, and the lower teens across NW WI. Winds will be light during the day Wednesday as the high pressure ridge axis advances through the region. Continued with the previous forecast package and kept more cloudy skies for Wednesday, despite the ridge axis in place. Highs Wednesday in the lower to mid 20s most places, with warmer temperatures towards the southwest.
winds will become more northwesterly as high pressure builds into the Mississippi River Valley. split between cooler air moving in with the northwesterly flow and more sunshine providing ample daytime heating.
Expect the rain to continue as low pressure moves along the Gulf Coast. (ISSUED 1022 AM CST Tue Feb 14 2017 ) Low pressure continues to move along the Gulf Coast. Pine Bluff, Monticello, and Camden are in the lower 50s. Rain wl cont to overspread the rest of the area today, with the highest QPF amts still expected to occur along and S of the I-40 corridor.
341 PM CST Tue Feb 14 2017 (Tonight and Wednesday) Main upper level low over the Panhandle this afternoon continues to produce extensive cloud cover across West Central Texas. Otherwise, cooler tonight as clouds clear with lows in the 30s.
307 PM CST Tue Feb 14 2017 The upper low that has provided widespread precipitation to the region the past 36 hrs continues moving eastward along the Red River. At the surface, high pressure will translate east in the wake of the storm system with lee side trough development into New Mexico by late in the day Wednesday. Based on recent temperature recovery behind these systems have favored the warmer side of guidance for high temperatures Wednesday under full sunshine. The large scale pattern during this time will still be comprised of a split flow regime along the west coast complete with a pair of southern latitude troughs - the first of which is already found diving over SW Arizona this afternoon.
A few valley rain and mountain snow showers around today and this evening as an upper level trof exits the area. Gusty east winds Wednesday, otherwise dry and warmer conditions the second half of the week. A stronger Pacific storm system will bring a very good chance of valley rain, mountain snow, cooler temperatures and gusty winds this weekend. A weak low sagging behind the exiting trough will bring a few showers to the area this afternoon and early evening. Dry and warmer the second half of the week with high pressure from the west. The first will hit the Pacific Northwest along with northern and central California over the next 48 hours before shearing into the front side of a strong ridge extending into southern Canada.
211 PM CST Tue Feb 14 2017 An upper low over the Great Lakes is dropping lower heights into MN and northeast SD today. Winds will diminish tonight as the low shifts farther east. Upper ridging will build in for the remainder of the short term forecast.
229 PM EST Tue Feb 14 2017 Low pressure tracking eastward through the Gulf Coast States today will move through our area Wednesday morning bringing showers and possibly thunderstorms.
141 PM MST Tue Feb 14 2017 Upper level ridging is building eastward into the Northern and Central Rockies toward the plains, with a closed upper low over Texas/Oklahoma. Mixing heights are limiting potential gusts this afternoon, however we will still see 15-20kt winds prevail through the early evening before decoupling of the low levels takes place. Some warmer guidance is indicating potential for mid 60s.
341 PM EST Tue Feb 14 2017 A cold front will move across the region tonight.
Freezing fog and low clouds are blanketing the Lower Columbia Basin this morning where Freezing Fog Advisories are in effect until 11 AM. NOWcasts were issued for the patchy freezing fog in North Central Oregon. It will be another afternoon where the low level inversion will keep temperatures in the 30s for areas in and around the Columbia Basin while the higher elevations above the inversion will enjoy an afternoon in the 40s to lower 50s. Thus significant snow fall will be limited to the highest mountain peaks. A bigger problem will be freezing rain. At this time feel confident enough that surface temps will be cold enough and precip will be sufficient enough to warrant freezing rain advisories for the Washington Cascade east slopes and the Kittitas valley.
Near the surface, a 1007mb low was located close to the TX/LA border and had a warm front just south of the TN border. A broad band of precipitation has developed north of the warm front, and will slowly propagate northward late this afternoon into our CWA. Should see precipitation increase this evening across portions of Southern KY as the TX/LA low and associated warm front lift northeastward. The system moves out of the region quickly Wednesday morning, and cooler and drier air from the northwest will advect in behind a cold front.
1138 AM CST Tue Feb 14 2017 In a cold air advection pattern behind yesterdays frontal passage, will see cooler temperatures for today, albeit it still above normal for this time of year. Both the GFS and the NAM are suggesting stratus dropping through Minnesota overnight, and cannot rule out that this would scrape our far eastern MN/IA zones after 06Z, though at this time it appears that much of this low level moisture will remain to the east of our area.
240 PM CST Tue Feb 14 2017 An upper low was evident via water vapor imagery dropping southeastward towards Lake Superior early this afternoon. A secondary cold front has been sliding south across the region, but the stronger 925 mb cold advection has been farther north through early afternoon. A very transitory cooler air mass behind the cold front will drop across the region this evening and tonight with temps falling back closer to seasonal averages. Winds will subside heading into Wednesday as surface ridging passes over the area. Mid/upper level ridging will spread into the Northern Plains and Upper Midwest and remain largely in place through the weekend.
342 PM CST Tue Feb 14 2017 Overall pattern in the upper levels locally puts us within north/northwest flow as a closed slow travels east across the southern Plains and an amplified ridge to the west that is heading our way.