Aikyam-Lab/Synoptic-Bench huggingface dataset:
932 PM CST Sun Dec 10 2017 Temperatures this evening are quite variable across the area, with some areas already in the lower 30s, and others still in the upper 40s to lower 50s. We should stay several degrees below record highs, as most of those records are in the low to mid 70s for Monday. The wind shift associated with the cold front will be a potential problem for fire suppression efforts.
515 PM CST Sun Dec 10 2017 Large scale flow over the CONUS will be stagnant over the next several days with mean ridging west/trof east.
/Issued 306 PM CST Sun Dec 10 2017/ Main forecast concern is the elevated fire weather conditions expected across portions of northeast Oklahoma and northwest Arkansas tomorrow both immediately ahead of and immediately behind an approaching cold front. The highest afternoon wind speeds in northeast Oklahoma should follow the frontal passage mid to late afternoon, and with the cooler air lagging the initial wind shift, there should be a short window when Red Flag conditions are met near the Kansas border and possibly as far south as Highway 412.
Very little change is expected through Monday with the inversion and resultant fog/stratus which extends across most of the lower elevations of southeast Oregon and southwest Idaho.
Another chilly night is in store, even colder than last night, as dry airmass, clear skies, and lighter winds from nearby high pressure allows temps to drop into the mid to upper 30s over much of the area. Near freezing temperatures will be possible over far northern Lake and northwest Volusia counties toward daybreak Monday.
821 PM EST Sun Dec 10 2017 A cold and clear night is expected as high pressure settles in across the Florida peninsula.
955 PM EST Sun Dec 10 2017 High pressure builds over the Gulf coast region through Monday night, as low pressure moves through the northern tier of the nation.
The strong and persistent high pressure aloft will remain the dominant weather feature across the western states through at least the middle of this week. Strong and persistent high pressure aloft across the western CONUS will continue to dominate the weather over UT thru mid week.
702 PM EST Sun Dec 10 2017 High pressure will bring a brief period of fair weather to the Appalachians and central mid Atlantic region to start the work week.
An upper ridge remains centered over the west coast, and will support a continuation of mild afternoons and cool nights through early to mid week.
903 PM EDT Thu Jul 13 2017 Muggy air will be displaced by a cold front which will pass through during the day and evening on Friday. Additional activity should develop/approach in the pre dawn hours as cold front approaches. It will be another muggy night with mins ranging from the mid 60s north to the lower to middle 70s southeast. Sfc cold front nears the nrn tier before sunrise, but takes quite a bit of time to cross the CWA.
952 PM EDT Thu Jul 13 2017 Thunderstorm chances will continue into tonight as a cold front slowly moves south into the Ohio Valley.
918 PM CDT Thu Jul 13 2017 A cold front has slipped just south of the forecast area over the past couple of hours, per surface wind shift and main instability axis, but temperatures and humidity levels are in no hurry to fall off to the north of the boundary. Cold front is edging across the far northern CWA early this afternoon, with dew points down into the upper 60s. The earlier convective line that formed just south of Lawrenceville resulted in briefly cooler conditions, but heat index values mainly in the 100-105 range at this point. However, high pressure building in from the northwest on Friday will result in dry conditions across the area. Much of the weekend will see our area in a northwest flow, as the upper ridge across the western U.
1038 PM EDT Thu Jul 13 2017 Muggy air will be displaced by a cold front which will pass through during the day and evening on Friday. It will be another muggy night with mins ranging from the mid 60s north to the lower to middle 70s southeast. Sfc cold front nears the nrn tier before sunrise, but takes quite a bit of time to cross the CWA.
708 PM EDT Thu Jul 13 2017 Rain chances will continue, and escalate into Friday as a cold front slides toward the Upper Ohio Valley Region. Upper-level low will push southeast through the day, with the surface cold front dragging through in the afternoon. Nevertheless, SPC has outlined the Ridges in a day 2 Slight Risk. High pressure will build in behind the cold front, bringing a drying trend heading into the weekend. An approaching trough will return low shower/storm chances for Mon before a large upper high drifts E from the Plains and Midwest.
628 PM CDT Thu Jul 13 2017 Cold front has made it just south of a St. In addition, the lack of a focused low- level jet feeding into the cold front should prevent a widespread heavy rain and flooding situation like what occurred further north last night. Much more comfortable conditions will build in for Friday with highs in the lower and middle 80s.
1030 PM CDT Thu Jul 13 2017 A ridge of high pressure will very slowly drift southeast, bringing another cool morning. Temperatures tonight will drop again into the 50s in most locations with the coolest readings across northwest IA and southwest MN where a few low spots could sneak down into the lower 50s. Some of the cooler spots could allow for a little fog development as well, but widespread low visibilities are not expected.
810 PM EDT Thu Jul 13 2017 Muggy air will be displaced by a cold front which will pass through during the day and evening on Friday. Additional activity should develop/approach in the pre dawn hours as cold front approaches. It will be another muggy night with mins ranging from the mid 60s north to the lower to middle 70s southeast. Sfc cold front nears the nrn tier before sunrise, but takes quite a bit of time to cross the CWA.
The wind field was light from the east in the lower levels and then generally north or northeast throughout the remainder of the column. This will help to enhance storm coverage and maintain the high moisture airmass.
742 PM EDT Thu Jul 13 2017 Several weak areas of low pressure will track along a stalled front over southern New England over the next few days as cool high pressure remains to our northeast.
Model guidance shows convection initiating offshore around 08Z overnight, with the highest chances to the west.
High pressure over the Great Basin will bring a continuation of above normal temperatures to the district. An influx of monsoonal moisture this weekend could increase the chance of thunderstorms over the higher terrain. A strong ridge of high pressure continues to be centered over the Four Corners region and covers much of the central and western US. The ridge will edge westward the next few days with temperature edging upward a few degrees.
Scattered storms continue to erupt across the area in the warm, humid and unstable airmass on the northwest side of a retreating upper level ridge.
We may see additional development as a cold front approaches. Temperatures have climbed into the lower 90s at most locales, with winds calm to light from the south.
1142 PM CDT Thu Jul 13 2017 Cold front has made it just south of a St. In addition, the lack of a focused low- level jet feeding into the cold front should prevent a widespread heavy rain and flooding situation like what occurred further north last night. Much more comfortable conditions will build in for Friday with highs in the lower and middle 80s.
650 PM CDT Thu Jul 13 2017 Cold front is edging across the far northern CWA early this afternoon, with dew points down into the upper 60s. The earlier convective line that formed just south of Lawrenceville resulted in briefly cooler conditions, but heat index values mainly in the 100-105 range at this point. However, high pressure building in from the northwest on Friday will result in dry conditions across the area. Much of the weekend will see our area in a northwest flow, as the upper ridge across the western U.
The front will push south through the area as a cold front Friday night.
554 PM MDT Thu Jul 13 2017 Updated aviation section Latest satellite imagery this afternoon shows both the amplifying upper level ridge across the western CONUS as well as the counter-clockwise rotation associated with the low pressure system spinning over south-central Colorado. Overnight lows tonight should be a few degrees warmer under mostly cloudy skies.
Otherwise, high pressure will over the coastal waters, with light winds and seas expected outside of afternoon/early evening thunderstorms.
Expect low clouds to remain limited tonight as cirrus insulates the lower layers. Drier air will move into the mid levels of the atmosphere in the wake of an inverted trough tonight and Friday, limiting rain chances.
Data from the Key West evening radiosonde balloon indicated strong, low-level convective inhibition and a deep layer of dry air extending well down into the lower troposphere. This evening's KKEY RAOB sampled a dearth of moisture through the lower levels of the atmosphere, precluding rain chances for much of the night.
851 PM EDT Thu Jul 13 2017 Rain chances will continue, and escalate into Friday as a cold front slides toward the Upper Ohio Valley Region. Upper-level low will push southeast through the day, with the surface cold front dragging through in the afternoon. Nevertheless, SPC has outlined the Ridges in a day 2 Slight Risk. High pressure will build in behind the cold front, bringing a drying trend heading into the weekend. An approaching trough will return low shower/storm chances for Mon before a large upper high drifts E from the Plains and Midwest.
1143 PM EDT Thu Jul 13 2017 High pressure will build down from this northwest this evening and crest over the area tonight.
955 PM EDT Thu Jul 13 2017 Evening surface analysis depicts the axis of Atlantic ridging extending across the Savannah River Valley. deep-layered ridging was centered along the Carolina coast.
/Issued 400 PM CDT Thu Jul 13 2017/ A few showers and storms have developed along the Red River counties this afternoon where the weak upper level trough axis is located. Tonight into tomorrow, the upper level ridge across the western United States will amplify and have a stronger influence on our sensible weather across the area.
High pressure in place should yield a mostly clear and cool (for mid-July) night. On Friday, this high will continue to drift east, allowing for southerly winds and hot temperatures to make a return to the area.
728 PM EDT Thu Jul 13 2017 A cold front will move through the area this evening and overnight. Cooler and sharply lower humidity will follow. Cooler and much drier air will overspread the area through Fri aftn. Thereafter pattern looks to become unsettled again throughout nrn periphery of hot central plains centered upper ridge. Skies clearing with VFR at KSBN as initial cold front has passed. VFR at both terminals through midnight but cooler post frontal air along with residual boundary layer moisture and light winds will likely lead to stratus development and some fog.
1144 PM CDT Thu Jul 13 2017 At 3 PM, cyclonic flow associated with a low pressure area over Northern Lower Michigan continued produce partly to mostly cloudy skies across the Upper Mississippi Valley.
1251 AM EDT Fri Jul 14 2017 A cold front will move through the area early this morning. Cooler and less humid conditions will follow during the day today. Cooler and much drier air will overspread the area through Fri aftn. Thereafter pattern looks to become unsettled again throughout nrn periphery of hot central plains centered upper ridge. Fairly weak flow behind a cold front can be expected today.
The west side of a strong 500 mb height high pressure area will fluctuate in strength over the Bay Area by only + or - 10 geopotential meters tonight into Friday.
708 PM EDT Thu Jul 13 2017 High pressure will build down from this northwest this evening and crest over the area tonight.
Temperatures will remain near average through the weekend as high pressure sits over the Great Basin. The usual summertime upper level ridge of high pressure continues to persist over the west coast keeping the jet stream well to our north and mostly confined to Canada. This ridge has one of its high pressure centers located almost squarely over Phoenix this afternoon bringing subsidence to our area but is forecast to gradually lift north and west over the next couple of days. An inverted trough approaching from our east will begin to influence our weather tomorrow by enhancing the upper level easterlies as it moves against our high pressure center.
Expect isolated afternoon thunderstorms on Friday, mainly over the higher terrain of central Idaho and south of the Snake River Valley.
943 PM EDT Thu Jul 13 2017 High pressure will build down from this northwest this evening and crest over the area tonight.
An unusually quiet mid-July evening thanks to high pressure and a drier airmass working into the area from the marine area. Ridge axis north of the area will keep an E/SE flow across the waters, with highest speeds up to 10-15 knots over the outer waters south of Sebastian Inlet.
A cold front will slowly move through the area tonight into early Friday, with additional chances for showers and storms, some of which will likely produce heavy rainfall. High pressure in the wake of the front will bring a sorely needed break from the recent wet weather to the area for much of the weekend.
625 PM CDT Thu Jul 13 2017 At 3 PM, cyclonic flow associated with a low pressure area over Northern Lower Michigan continued produce partly to mostly cloudy skies across the Upper Mississippi Valley.
After midnight, convection should be confined to the offshore waters and more specifically offshore waters south of Intracoastal city where short range guidance is indicating some convective development during the early morning associated with the approaching inverted trough from the east. Said trough will have a more significant influence on precip chances over the weekend. /issued 409 PM CDT Thu Jul 13 2017/ At the sfc, high pres continues to ridge west acrs the Gulf coast which is maintaining light southeasterly winds over the region. Aloft, the area remains south of a east-west oriented ridge axis acrs the southern plains into the mid-MS valley. Despite this, showers and tstms developed a little later today and coverage has been more widely sctd than the past few days thanks to a little more influence from ridging in the mid levels.
Lows will be in the low to mid 70s. Most of the showers will dissipate by the early overnight hours with skies becoming partly cloudy, with lows in the low/mid 70s. During this time the Lower Mississippi Valley region will be situated between a sprawling and deep high pressure ridge to our west (over the Intermountain West and High Plains) and a somewhat more subtle "Bermuda" High encroaching toward the Deep South. By afternoon on all these days there will likely be enough convective activity around and associated moving and cooler outflow boundaries to temper the heat some as well.
There is potential for additional scattered showers and a few thunderstorms to develop late tonight or early Friday morning, particularly near the coast with the approach of an upper level trough. Overnight lows look on track to range from the lower 70s inland to the mid to upper 70s near the coast and beaches.
A cold front was slowly working its way south across Missouri this afternoon. A Heat Advisory remains in effect through 7pm this evening as the cold front will be slow in pushing the summertime high to the west until later tonight into the overnight hours. Ample moisture will be available for storm development with dewpoints in the lower to middle 70s. Temperatures Friday will be cooler as the result of the increased cloud cover and rain across the region.
610 PM CDT Thu Jul 13 2017 A ridge of high pressure will very slowly drift southeast, bringing another cool morning. Temperatures tonight will drop again into the 50s in most locations with the coolest readings across northwest IA and southwest MN where a few low spots could sneak down into the lower 50s. Some of the cooler spots could allow for a little fog development as well, but widespread low visibilities are not expected.
Climb winds are SE backing to NE to about the freezing level at 15kft, then NW flow around 20KT into flight levels. A cold front will filter in our backdoor NE tomorrow.
854 PM MDT Thu Jul 13 2017 The forecast remains on track as the ridge is keeping any shower activity suppressed. As we go through the rest of the evening, most places will remain dry except for far western zones where a few isolated thunderstorms could form in the higher elevations above the cap. A few of these could make it north and east off the higher elevations, but confidence is low, and these will likely produce little rain. A weak disturbance will pass through the top of the ridge axis tonight and this will push a weak (and dry) front through the forecast area tomorrow morning.
1130 PM EDT Thu Jul 13 2017 Muggy air will be displaced by a cold front which will pass through during the day and evening on Friday. It will be another muggy night with mins ranging from the mid 60s north to the lower to middle 70s southeast. Sfc cold front nears the nrn tier before sunrise, but takes quite a bit of time to cross the CWA.
In the wake of this disturbance, high pressure will build across the region for the weekend allowing for hot temperatures. Thunderstorm coverage will probably be even less tomorrow, with the ridge beginning to amplify over the Rockies.
920 PM PDT Thu Jul 13 2017 Warmer weather will develop by this weekend, along with a return of chances for afternoon showers and thunderstorms in the mountains and deserts. Night/morning low clouds and fog will push into the valleys again tonight into Friday morning, then pull back to coastal areas for the weekend as the marine layer thins under strengthening high pressure aloft. The upper level ridge over SoCal has begun to shift northward. As the ridge shifts north and builds slightly through the weekend, high temperatures will increase to around 5 degrees above seasonal normals and also help to create a more shallow marine layer along the coast. The transition of the ridge further north will result in southeasterly flow aloft, bringing an influx of sub-tropical moisture over the region.
Ridge of high pressure will continue over the region.
but with the onshore flow remaining in place and the upper ridge axis lingering out west not confident enough to make any changes at this time.
936 PM EDT Thu Jul 13 2017 Several weak areas of low pressure will track along a stalled front over southern New England over the next few days as cool high pressure remains to our northeast.
328 AM CST Tue Nov 28 2017 The upper level trough that brought last night's cold front will continue pushing east.
341 AM CST Tue Nov 28 2017 A quite complex upper level pattern exits with 2 progressive northern stream troughs, one over the High Plains & another coming into the Pacific Northwest, a 3rd slower moving one over the southern Rockies and a 4th in the central Gulf of Mexcio. Locally, a weak ridge passing across the southeastern states will once again provide mild temperatures with no rainfall. This ridge will quickly erode as the southern Rocky Mountain trough tracks into the southern plains tonight. A few showers will develop in the coastal waters as moisture from the Gulf trough is drawn into the southern plains trough.
1123 PM EST Mon Nov 27 2017 High pressure will crest over the region tonight then shift east on Tuesday. Another cold front will approach from the west Tuesday night and will cross the region early Wednesday. High pressure will build in from the west Wednesday afternoon and will crest over the region Wednesday night.
224 AM CST Tue Nov 28 2017 Satellite and surface observations indicate a cold frontal boundary that stretches from Omaha down into SE Kansas currently. Warmer air will still reside on the southern side of this boundary creating a decent thermal gradient that runs SW to NE over the CWA this afternoon. The northern side of the boundary will be much cooler than yesterday with highs in the mid to upper 50s and south of the boundary in the low to mid 60s. A closed upper level low over OK will push just to the south of the CWA creating increased chances of light rain over our southern CWA Wednesday morning into the afternoon, but once again little to no accumulation is expected.
257 AM EST Tue Nov 28 2017 High pressure moves off the coast today.
Aloft - Broad troughing resides across the southeast U. A ridge initially from Mexico to the central Plains slides into the Gulf region as it flattens. in response to a short wave trough tracking from the 4-Corners region to the Mid-Mississippi Valley. Surface - High pressure sprawling across the eastern states. The high pressure to the north dominates with northeasterly to easterly flow which will slowly increase moisture somewhat across the area. Then the ridge aloft moving into the Gulf starts to nudge this moisture gradient southward Wed. Temperatures continue to run on the warm side of normal with highs Wed a degree or two above the highs today.
349 AM CST Tue Nov 28 2017 An upper level trough is over northern New Mexico with southwest flow over the CWA. This upper trough will move over the Texas Panhandle by this evening, and a cold front will push into the area beginning this afternoon. Overnight lows tonight will be much cooler with temperatures in the 30s and 40s across the area.
/issued 234 PM EST Mon Nov 27 2017/ The short term models are in very good agreement handling the upper level low that develops near the Georgia/Florida state line overnight. The low has little moisture to work with so no rain is expected, although FEW-SCT clouds will develop over south Georgia and spread northward by tomorrow afternoon. High pressure at the surface will keep winds relatively light overnight before becoming 5- 10 mph out of the southeast by late morning tomorrow. With a few more clouds tomorrow, expect overnight lows to be a few degrees warmer than tonight on Wednesday morning.
248 AM EST Tue Nov 28 2017 High pressure will bring mainly fair weather for much of the week. As the high moves east, a southwest flow will develop along with moderating temperatures.
Expect these winds to slowly decrease through the afternoon hours with the high wind warning now extended until 4 pm as gradients slowly relax through early evening. With enough low and mid level moisture and some energy from the passing trough, expect scattered showers mainly west of a Douglas to Laramie line. Another surface lee trough forms as southwest flow aloft strengthens. Warmer day though in advance of the cold frontal passage. Colder night than Tuesday night in the wake of the cold front and with clearing skies.
129 AM EST Tue Nov 28 2017 High pressure will bring mainly fair weather for much of the week. As the high moves east, a southwest flow will develop along with moderating temperatures.
301 AM EST Tue Nov 28 2017 A cold front near the Mississippi river will push east across the region tonight.
A weak cold front will move into the area Tuesday night and stall Wednesday.
An inverted trough lingers through the central Gulf of Mexico, leaving the local area with at least moderate northeast to east breezes over the next few periods.
1238 AM EST Tue Nov 28 2017 South winds ahead of a cold front will continue to bring warmer air into the region through Tuesday. Low temperatures tonight will only drop into the lower to middle 40s, while highs on Tuesday afternoon will reach the mid 50s north to lower 60s south. A low chance of rain showers will also accompany the cold front as it passes Tuesday afternoon and evening. Lows will generally drop into the low to mid 40s with highs into the upper 50s to near 60 tomorrow. This feature will force a trailing cold front into nw IN/lower MI Tuesday evening and points southeast later Tuesday night.