Aikyam-Lab/Synoptic-Bench huggingface dataset:
339 AM CST Tue Dec 12 2017 H5 Analysis from earlier this evening had high pressure located over northern Nevada with a ridge extending north into the Northwest Territories of Canada. East of this feature, a broad area of low pressure was located over eastern Canada with a trough of low pressure extending south to Florida. At the surface: High pressure was dominant across the intermountain west tonight and a piece of this high extended east into Nebraska. A warm front extended from North Dakota into central Nebraska. Along and west of the warm front, an area of cloudiness was present North Dakota south into central Nebraska. Thanks to westerly winds along the trough, much warmer air will push into the forecast area today.
256 AM CST Tue Dec 12 2017 Today: A mid-upper deck longwave trough, deeper than the Marianas Trench, is situated from the Great Lakes all the way to about Mississippi, while an ultra-high amplitude upper-deck ridge covers western North America from Baja CA all the way to the British Columbia/ Alberta border. Airmass in wake of trough passage becomes dry adiabatic early Wed afternoon & with excellent momentum transfer windy & warmer weather results for all areas. The mid-upper wave will kick a weak cold front SE across KS Sat Night. Since the front is fairly weak, temperatures won't cool that much from Sat to Sun with Sun's highs in the lower 50s. Mon will be warmer as lower-deck flow backs toward the west which would enable highs to reach back into the mid 50s.
Even though the models are showing a couple of upper level troughs, with their associated surface fronts, moving across the region over the weekend; the environment is too dry to support any significant impact other than an increase in cloud cover.
High pressure will continue to bring above normal daytime temperatures, cold night, relatively light winds and very dry conditions through much of this week. Not much changes over the next several days as a high amplitude ridge remains over the western United States. The ridge position will move a bit westward later this week, which may allow for energy moving over the ridge to retrograde into the southwestern states, too early to tell.
254 AM MST Tue Dec 12 2017 High pressure parked across the western United States will result in dry and quiet weather through the weekend.
1123 PM CST Mon Dec 11 2017 A dry cold front is moving through North Texas tonight which has caused winds to shift to the north. /Issued 231 PM CST Mon Dec 11 2017/ /Tonight/ After a very warm, sunny, and near record temperature-breaking afternoon, a cold front lurks on the horizon across the Texas Panhandle and Western Oklahoma. The cold front should clear our Central Texas counties well before sunrise. Initially, the surface cold front will bring a subtle shift of current westerly winds to northwest at 10-15 mph, before strong low level cold advection and a shift to the north at 15-20 mph arrive 3-4 hours post passage.
208 AM MST Tue Dec 12 2017 Northwest flow continues over the northern plains, with a persistent upper ridge to the west and trough to the east. A band of low clouds and a warm front stretch from north to south across the central/eastern Dakotas.
This will offer more of a warmer flow combined with sunshine.
332 AM EST Tue Dec 12 2017 A low pressure system will move east from the Great Lakes region into the Northeast states today. The associated strong cold front will push across the region from midday through mid- afternoon.
342 AM EST Tue Dec 12 2017 A dry cold front moving across TN this morning will push into NW GA around sunrise and continue move SE through the day. A colder airmass will move in across the state behind this cold front with low temps Wed morning running mainly in the teen and 20s across the CWA.
1231 AM EST Tue Dec 12 2017 High pressure over the Southern States will weaken overnight allowing a dry cold front to cross the area Tuesday morning.
With many areas falling below freezing north of I-4 last night, temperatures will not be nearly as cool with only Tomorrow's highs will climb back up to average before a strong and dry cold front sweeps across the area during the day tomorrow. A deepening low pressure system near the Great Lakes will drag a cold front across our region on Tuesday.
419 AM EST Tue Dec 12 2017 Dry cold front will cross the forecast area late this morning with high pressure and reinforcing cold air moving into the region this afternoon and tonight.
/Issued 927 PM CST Mon Dec 11 2017/ Cold front has moved through the entire forecast area this evening, with only a few high clouds left in its wake.
It will be considerably cooler today as CAA continues upon northwest low level flow.
In the low levels, winds will back to westerly today, allowing for downslope-induced warming to erode the cooler air mass which filtered into the region behind yesterday's (Mon) cold front.
1213 AM CST Tue Dec 12 2017 A dry cold front continues to move SE through the state early this Tue morning.
607 AM EST Tue Nov 14 2017 High pressure builds today. Cold front crosses late Wednesday.
With the high clouds slowly exiting to our southeast, we'll begin to see again the actual extent of fog on the nighttime microphysics GOES-16 satellite imagery. Morning fog east of the Missouri River will slowly exit east, as a cold front sweeps across the region and into MN this afternoon. While cooler air will slide in behind this boundary, a secondary cold front sinking across late tonight will really bring the cooler air. Cool Canadian high pressure will build a ridge overhead Wednesday afternoon and evening.
Mostly sunny skies will prevail Wednesday as high pressure ridging builds once again.
947 AM EST Tue Nov 14 2017 High pressure should result in mainly dry weather through Wednesday morning. Rain chances return with a late Wednesday cold front. Clouds will slowly erode this afternoon, generally from south to north, as high pressure slides across and winds veer towards the east with time. Mainly clear skies are expected tonight as the high continues EWD.
947 AM EST Tue Nov 14 2017 Water vapor imagery and upper air plots showing mid to upper trough down the Eastern Seaboard through FL and into the N Carib. Large dome of high pressure over the Ohio River valley has filtered some slightly drier and not as warm conditions into the region as frontal boundary pulls off the SE FL coast today.
438 AM MST Tue Nov 14 2017 Aviation Section Updated Gusty winds and near to above normal temperatures will be the theme across Central Montana over the next couple of days, although areas from Havre to Chinook may stay cooler than areas further south.
924 AM EST Tue Nov 14 2017 Canadian high pressure to our north will bring near seasonable temperatures and dry conditions this week. A strong cold front is expected to cross the coast this weekend. This will allow a very long and narrow ridge extending from Maine down into the southeast to develop. There once again could be some patchy frost inland in the low lying areas but unless guidance changes appreciably, there shouldn't be a need for a NPW.
A weak upper level trough will graze northern Utah today, bringing a threat of light precipitation to far northern Utah this morning. Dry weather is expected statewide on Wednesday as an upper level ridge briefly builds over the area.
1041 AM EST Tue Nov 14 2017 High pressure and dry air will remain in control of the region through Wednesday.
A cold front will enter northeast Oklahoma late tonight or early Wednesday morning, and will sweep across the area during the day Wednesday.
After the chilly, clear start this morning and a bit of river fog, an area of low clouds across northeast Alabama and east Tennessee is spreading northwest into our southeast counties in the low level southeasterly flow per the 12Z OHX sounding.
352 AM MST Tue Nov 14 2017 Gusty winds and near to above normal temperatures will be the theme across Central Montana over the next couple of days, although areas from Havre to Chinook may stay cooler than areas further south.
This will be suitable for isold-sct low-topped shras to form over the Gulf Stream due to weak coastal troughing and enhanced low-level convergence in the onshore flow.
Winds will be out of the SSW 5-15 kts until 06Z for DHT/GUY and 08Z on Wed for AMA when a cold front will move through shifting winds to out of the north at 20 kts with gust up to 30 kts. Periodic cold frontal passages are expected to impact the area during the next 7 days.
519 AM CST Tue Nov 14 2017 Below-seasonal temperature trends will finally come to an end today as a weak mid-level ridge advects overhead atop steady southerly return flow at the surface. High temperatures will approach the mid to upper 50s across eastern Kansas and western Missouri, with values in the lower 50s across central and eastern Missouri. Increased 850 hPa flow ahead of lee-side low pressure to the west will aid in widespread ascent for light rain and drizzle throughout the morning and afternoon hours today. This feature will force the previously mentioned lee-side low eastward and provide for modest ascent ahead of and along the surface cold front Tuesday night into Wednesday morning.
Overnight the cold front, which passed through much of the Northern Rockies has stalled, leaving a boundary strewn across Idaho County eastward into southwest Montana. The shower activity diminishes later today into this evening as a ridge of high pressure builds over the Northern Rockies. The ridge pushes the moisture up into Canada, so the best chance for any shower activity will be areas along the Canadian border tonight. The upper level flow becomes southwesterly on Wednesday which will increase in clouds and eventually the potential for precipitation by Wednesday evening when yet another strong cold front appears to blast through the Northern Rockies.
Ceilings and visibilities will improve by mid morning as the low clouds and fog lift and burn off with diurnal heating. Low temperatures tonight will be in the 60s inland to the lower 70s along the coast.
Locally, temperatures are in the mid 70s, and dew points are in the low 70s. Low-level moisture associated with the unorganized disturbance in the Caribbean/SW Atlantic will continue to rotate through the Florida Straits, occasionally crossing the Middle and Upper Keys as the disturbance attempts to get a bit more organized, possibly forming a low-pressure center near eastern Bermuda.
650 AM EST Tue Nov 14 2017 High pressure in central Ohio will move northeast this evening. Southerly flow will bring in warmer air and more moisture, eventually getting wrung out as showers with the next cold frontal passage on Wednesday.
809 AM EST Tue Nov 14 2017 High pressure in central Ohio will move northeast this evening. Southerly flow will bring in warmer air and more moisture, eventually getting wrung out as showers with the next cold frontal passage on Wednesday.
Dry weather with periods of high clouds will persist this week as high pressure remains over the region or situated just to our south. A storm system passing to the north later in the week could bring slightly cooler temperatures and some breezes to the Southwest. Latest upper level analysis shows a broad area of high pressure just to our south over the Eastern Pacific and Mexico and is responsible for the unusually warm weather we have been seeing. To our north, a trough of low pressure is positioned over the Pacific Northwest and continues to bring showers and cool weather to the area. 500 mb heights will gradually lower today and through this week as the aforementioned high pressure weakens and the Pacific trough digs further south and east.
Surface wise, our region lies between a trough of low pressure in the Bahamas and a massive and sprawling region of high pressure aligned over the entire eastern United States, and down the Florida peninsula.
Some light showers or patchy drizzle remain possible through the morning, with possible uptick in showers again late in the period as a cold front approaches. A cold front will enter northeast Oklahoma late tonight or early Wednesday morning, and will sweep across the area during the day Wednesday.
Periodic cold frontal passages are expected to impact the area during the next 7 days.
338 AM MST Tue Nov 14 2017 09z surface analysis showed low over southeast MT with modest pressure falls across the northern Plains ahead of cold front pushing across central MT. Ahead of it across southwest into central SD, temperatures will reach the lower to mid 60s with 50s to the northwest. Wednesday, cooler temperatures expected as upper ridge builds to our west.
331 AM MST Tue Nov 14 2017 Warm and dry weather will persist through the week, with record highs in the lower 80s likely today across the lowland deserts. An easterly wind shift will bring slightly cooler air into the area for Wednesday, but highs will remain about 10 degrees above normal.
A cold front late tonight will shift south and southwest winds to the north. /issued 301 AM CST Tue Nov 14 2017/ Lee troughing to our west will strengthen through tonight and surface winds will become more westerly. Both of these factors should help to erode the low stratus deck that has persisted for the past several days. Clearing skies and downsloping warming component of the wind will result in warmer temperatures today. Areas that see more sun earlier will warm more quickly with the highest temps in the far southwestern Panhandle.
531 AM EST Tue Nov 14 2017 High pressure and dry air will remain in control of the region through Wednesday.
The lowest ceilings and visibility tonight should be over western Oklahoma near and behind a cold front that is expected to move through. By the end of the TAF period, the cold front should be near I-44 with northerly winds behind it.
546 AM EST Tue Nov 14 2017 High pressure should result in mainly dry weather through Wednesday morning. Rain chances return with a late Wednesday cold front. Weak dry advection ahead of building high pressure has mainly ended any drizzle around the area with rising cloud ceilings. Mainly clear skies are expected tonight as the high continues EWD.
Satellite showing cold front moving through the Boise and McCall area this morning. Otherwise, short lived upper ridge to move into the region later today through Wednesday morning bringing a temporary reprieve to the precipitation before the next system moves in Wednesday afternoon.
Issued by National Weather Service JACKSON KY 1046 AM EST Tue Nov 14 2017 High pressure in central Ohio will move northeast this evening. Southerly flow will bring in warmer air and more moisture, eventually getting wrung out as showers with the next cold frontal passage on Wednesday.
Chattanooga Airport, TN 58 40 60 46 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 56 37 58 45 / 0 0 0 20 Oak Ridge, TN 56 39 58 44 / 0 0 10 30 Tri Cities Airport, TN 53 32 55 41 / 0 0 0 30.
Low temperatures tonight will be in the 60s inland to the lower 70s along the coast.
758 AM EST Tue Nov 14 2017 High pressure and dry air will remain in control of the region through Wednesday.
High pressure over the Ohio River Valley and low pressure over the southern Bahamas will furnish a breezy onshore flow, particularly near the coast to continue today. For the nearshore waters off of Flagler County where the coastal trof resides there is enough moisture for an isolated rain chance mainly east of I-95 the rest of today, mainly due to the low level convergence with the heightened onshore flow. Onshore flow will continue through Fri, then winds shift southerly Fri night into Sat ahead of an approaching cold front.
Ceilings should remain at or above 5000 ft from mid morning through the afternoon as the low level jet weakens. MVFR ceilings will return to the entire region overnight as the low level jet sets up once again. Overnight temperatures will be very mild for mid November with lows mainly in the lower 60s. /Issued 348 AM CST Tue Nov 14 2017/ Another cold front will move into North Texas on Wednesday once an upper trough swings through the Central Plains.
A cold front crosses tonight, and then another crosses Monday night. High pressure midweek. Therefore, decrease PoPs considerably and blend them into tonight's PoPs with higher PoPs with the cold front. Cold front expected to cross around 06Z. Behind the front, high pressure will take its place.
Upper ridge will try to build across the plains for Mon-Wed, which will lead to max temps once again climbing above normal into the upper 90s, close to 100 by Tue and Wed. Te upper ridge looks to retrograde back to the west for the end of the week, with will lead to more seasonal temps and conditions for the region for the end of the week.
100 AM EDT Mon Jul 24 2017 A broad trough across the lower Great Lakes will linger into Monday afternoon. High pressure will then be able to build across the region and bring lower humidity for the first part of the work week.
Lows will range from the lower-mid 70s inland and upper 70s along the coast.
950 PM EDT Sun Jul 23 2017 A broad trough across the lower Great Lakes will linger into Monday afternoon. High pressure will then be able to build across the region and bring lower humidity for the first part of the work week.
1148 PM CDT Sun Jul 23 2017 As advertised, a somewhat cooler and drier airmass continues to build south across the region today with temperatures ranging from the middle 80s in northeast Nebraska to the lower 90s in far southern reaches of the forecast area.
Remainder of forecast looks good as this trough moves through and skies become mostly clear for the remainder of the night. First is the upper trough axis located approximately along I-57 and pushing eastward. Winds will diminish and turn northerly overnight behind the trough axis with drier air moving in, allowing temperatures to fall into the 60s for lows.
Pretty quiet and hot weather pattern will be in place through Monday with strong ridging aloft and limited monsoonal moisture. The pattern will be similar for Monday with ridging/subsidence aloft keeping tstm chances rather limited. Not expecting much convective initiation along the trough except in areas near the southern Laramie Range.
Issued at 230 PM Sun Jul 23 2017 With the upper ridge building back.
835 PM EDT Sun Jul 23 2017 High pressure remains off the southeast coast.
This high will remain dominant over the area into tonight, so expect the clouds to dissipate with the loss of daytime heating later this evening. The high gets pushed east on Monday ahead of an approaching low pressure system. Warmer air will filter in ahead of the approaching low on Monday, with highs ranging from the mid 80s east to around 100 degrees along and west of the Missouri River.
A ridge of high pressure will move overhead tonight, and east of the region by Monday afternoon.
928 PM EDT Sun Jul 23 2017 High pressure remains off the southeast coast.
656 PM CDT Sun Jul 23 2017 As advertised, a somewhat cooler and drier airmass continues to build south across the region today with temperatures ranging from the middle 80s in northeast Nebraska to the lower 90s in far southern reaches of the forecast area.
South to southwest winds will range between 15-20 kts tonight between the ridge to the south of the waters and an approaching trough axis which will edge south toward the TN River Valley.
931 PM CDT Sun Jul 23 2017 There'a a low pressure system (currently moving into se Montana/ne Wyoming) approaching the region from the west. This high will remain dominant over the area into tonight, so expect the clouds to dissipate with the loss of daytime heating later this evening. The high gets pushed east on Monday ahead of an approaching low pressure system. Warmer air will filter in ahead of the approaching low on Monday, with highs ranging from the mid 80s east to around 100 degrees along and west of the Missouri River.
The profile was quite moist throughout the lower and mid levels. Some of the thunderstorms associated with the trough could become strong or even severe but most of this activity is expected to stay just northeast of the area.
A developing lee side trough in eastern Montana along with an elevated mixed layer (EML) should set the stage for warm temperatures Monday. More concerning is a cold front moving into western ND Monday afternoon. This feature is associated with a stacked low pressure system moving from central Alberta eastward into central Saskatchewan. Most of the energy with this system should reside in Canada, but enough instability with projected CAPE values over 2000 J/Kg along the surface cold front for SPC to continue a marginal risk for severe storms over ND. Along and ahead of the cold front we expect temperatures to climb into the 90s across western and most of central ND, with upper 90s in the southwest.
/issued 328 PM CDT Sun Jul 23 2017/ (Tonight and Monday) Thunderstorms will continue through this evening as a weakness of low pressure continues in the upper levels. Upper level high pressure will gradually strengthen tomorrow, however can't rule isolated showers and thunderstorms developing tomorrow.
Monday looks warmer with more sunshine than we had today, and adjusted max temps up slightly.
high pressure begins to build in with a pleasant and less humid start to the work week expected.
/Tonight through Monday/ Confidence: Medium to High Secondary cold front moving into northern Iowa early this afternoon and will progress south tonight. Main focus this period will be cooler overnight lows. Light winds with high pressure building into the area will allow for strong radiational cooling. Northeast areas will recover to the upper 70s and the central/south to the lower to mid 80s.
However, to our north, showers and thunderstorms erupted along the leading edge of an upper trough late in the afternoon and are ongoing in some areas. Residents in Franklin County may not see much if any rainfall but will experience slightly cooler, northerly outflow winds from this convection through about 10 PM or so. Another warm/muggy night is on tap across the area with lows by daybreak Monday only in the low/mid 70s. Some redevelopment of showers/storms is possible tonight as the upper trough moves into our area. With more clouds than sun, temperatures to start a new work week will be a bit cooler, "only" in the upper 80s to around 90. Even with dewpoints in the lower 70s, they should not be high enough to warrant Heat Advisories - at least this issuance.
830 PM PDT Sun Jul 23 2017 A dry cold front will arrive this evening, bringing windy conditions near the Cascades and into the Columbia Basin and a chance of a brief thunderstorm near the Canadian border.
Basically the ridge axis shifts back to our east by tomorrow morning allowing southerly flow to increase and our PWATs push back up to 1. Early cloud cover and this increase in convection should begin a cooler trend for Monday.
Might be some fog tonight in the west toward the high building in. Dry weather is then expected overnight and on Monday as high pressure builds into the region. Might be some fog tonight in the west toward the high building in. Dry weather is then expected overnight and on Monday as high pressure builds into the region. The lack of sunshine along with cooler temps aloft will result in below normal high temps in the low to mid 70s.
High pressure will move east following Highway 2 toward Lake Superior tonight, prompting light winds and making for a nice mild evening. On Monday, a combination of breezy southerly return flow and an upper level ridge building through the forecast area will bring a warmer day with highs nearing 90 in the Devils Lake basin area. Moderate instability will develop during the afternoon, especially in eastern North Dakota, but ridging aloft will keep mid levels warm enough to hold capping into Monday night.