Aikyam-Lab/Synoptic-Bench huggingface dataset:
As for the weak cold front advertised to slip south across nenr Colorado next hour or two, well its difficult to see any revealing evidence in the wind and pressure fields upstream in Wyoming. High pressure ridge aloft now centered over Colorado with a light westerly flow aloft.
435 PM MDT Sun Sep 10 2017 No significant changes seen across the CWA over the next couple days with an upper high pressure area being the main weather factor for the region.
142 PM CDT Sun Sep 10 2017 142 PM CDT High pressure to continue influencing the weather across the region, with quiet/dry weather expected through the period.
215 PM EDT Sun Sep 10 2017 High pressure will continue to build into the area today and strengthen through the upcoming work week.
108 PM EDT Sun Sep 10 2017 Dry airmass and large area of high pressure in full control of southeast Michigan will lead to minimal aviation concerns. * High confidence in CIGS aob 5000 feet early this afternoon dissipating late this afternoon 06Z MSAS Analysis places the center of the sprawling +1030mb anticyclone directly over the Saginaw Bay region. Main composite 500-300mb ridge axis will nudge from Wisconsin this morning to southeastern Michigan later today.
336 PM MDT Sun Sep 10 2017 No significant changes seen across the CWA over the next couple days with an upper high pressure area being the main weather factor for the region.
252 PM MDT Sun Sep 10 2017 Under the upper level ridge that is over the state, a weak disturbance will be slowly drift over CO tonight and Monday. High temps are expected to be a few degrees cooler on Mon, but still a little above average acrs the southeast plains, and around average in the high valley locations.
249 PM EDT Sun Sep 10 2017 High pressure will maintain dry conditions through the start of the week before rain chances return with approaching low pressure. High pressure will maintain dry conditions tonight, with what little diurnal cu there is diminishing around sunset. Dy conditions under high pressure will continue through much of Monday and Monday night, with only high clouds increasing in advance of the remnants of Irma late.
458 PM EDT Sun Sep 10 2017 High pressure will maintain dry conditions through the start of the week before rain chances return with approaching low pressure. This will generally preclude frost in essentially all of the area, yet light winds and high pressure will continue to allow for local fog development. Fries Dy conditions under high pressure will continue through much of Monday and Monday night, with only high clouds increasing in advance of the remnants of Irma late.
352 PM EDT Sun Sep 10 2017 As all eyes are on southwest Florida with the landfall of Hurricane Irma, high pressure remains in control of weather over the Great Lakes. High pressure center continues to shift east to the lower Great Lakes tonight into Monday. Result will be increasing south to southwest gradient winds leading to warmer temps tonight than have been seen last couple nights.
/18Z TAFS/ High pressure will remain in control with some scattered high clouds and east to northeast winds through the forecast period. Ridging from the surface to 250 mb will remain over Texas.
590-592dm high pressure center remains centered over Colorado with a 1F to 3F increase in 850mb temperatures today compared to yesterday. This will support high temperatures in the low to mid 90s. synoptic scale pattern doesnt change much during the day with the forecast area remaining under 590-592dm upper high. During the night the upper high shifts slightly west/southwest as remnants of Irma move northwest into parts of Alabama. MOS/2m temperatures a few degrees cooler so have blended the two and am going for low 90s.
Afternoon highs will be a bit cooler than yesterday but still a few degrees above average for this time of year.
246 PM CDT Sun Sep 10 2017 An area of low pressure is currently located over Saskatchewan with a cold front along the western Dakotas. An are of high pressure will slide across North Dakota on Monday with winds shifting to the northeast. The core of this high pressure is very dry with dew points dropping into the 40s and 50s by the afternoon hours.
700 PM EDT Sun Sep 10 2017 Strong high pressure will extend from Lower Mi across the ern Great Lakes through Monday. Otherwise, the high will maintain light winds and clear skies into Monday. Will struggle to get anything other than surface saturation, but some of the higher res models indicate it may difficult to reach that. Slightly warmer temperatures throughout the day will mean a further fall of overnight as well.
1235 PM CDT Sun Sep 10 2017 Little change from persistence/going forecast with highs edging slightly warmer each day.
There is a low pressure trough over the Northern Plains that will slide northeast tonight. The tighter pressure gradient between that trough and high pressure stationed over the Great Lakes is leading to steady southeasterly winds each day over southern WI. The clouds and weather associated with this trough should remain to the northwest of us. Monday will feature weather very similar to today, except highs will be a little warmer.
Shower and thunderstorm activity through mid-week will be limited to mainly southeast California and the higher terrain of the southern Great Basin and northwest Arizona.
An upper ridge of high pressure is over the region.
554 PM CDT Sun Sep 10 2017 Patchy showers over southeast parts of the forecast area at 19Z are expected to continue to diminish through the afternoon as upper trough over southwest Minnesota lifts northeast.
255 PM CDT Sun Sep 10 2017 High pressure across Illinois will steadily weaken in the short term, as the remnants of Irma advance into western Georgia by 00z/7pm Monday. Slightly cooler temps in the mid 70s are expected in our NE area, toward Danville/Hoopeston.
342 PM CDT Sun Sep 10 2017 An upper level trough is located from the Midwest down into the Northwest Gulf of Mexico. This trough is steering Hurricane Irma into the Southwest Florida coast.
25 /Monday through Sunday/ Tranquil weather is expected across the region on Monday as we remain sandwiched between Irma to our east and an upper level ridge to our west.
443 PM EDT Sun Sep 10 2017 A strong ridge of high pressure continues to hold on today across the Ohio Valley, with a large amount of dry air in place. The center of low pressure associated with the hurricane is forecast to move into northern Florida and southwest Georgia tomorrow afternoon, and eastern Alabama overnight Monday night. However, the amount of clouds and rain will keep near surface temps quite cool Monday night, warming quickly in the mid levels as winds feed into warmer air. As such, there could still be some higher winds that mix down even in the lowest levels, so did up increasing winds and gusts a bit across the CWA.
207 PM EDT Sun Sep 10 2017 High pressure, with cool, dry air, dominates into much of Monday.
217 PM CDT Sun Sep 10 2017 142 PM CDT High pressure to continue influencing the weather across the region, with quiet/dry weather expected through the period.
Very dry air mass will continue over South Texas through the period with the upper level ridge axis remaining to our west.
257 PM EDT Sun Sep 10 2017 High pressure centered over the eastern Great Lakes will gradually weaken through the day on Monday. The models are in general agreement taking the center of the low associated with Irma into northern Georgia/Alabama through Monday night. Generally expect highs on Monday to be in the lower 70s across the area.
SW KS will remain under the subsident eastern periphery of a 592 dm upper high centered near Colorado, allowing for few clouds and temperatures several degrees abovve normal. Kept temperatures several degrees above MOS guidance, with most locations achieving the lower 90s. The westerlies remain well north over Canada, with persistent upper ridging over the Intermountain west.
/Issued 543 AM CDT Sun Sep 10 2017/ A mostly dry forecast will continue as high pressure centered just east of the area will provide a dry northerly flow. A low pressure system off the CA coast will be influenced by an upper level trough that will deepen over the Pacific Northwest mid week.
321 PM CDT Sun Sep 10 2017 The closed mid/upper level low pressure is currently located over the northern plains and upper Midwest. The associated trough axis extends to the south-southwest with the southern most portion over southern NE. Therefore patchy ground fog will be possible around sunrise especially in the low lying areas across eastern KS.
126 PM EDT Sun Sep 10 2017 High pressure will remain over the area through Monday and bring pleasant conditions. A ridge of high pressure will remain over the region and allow a cool and dry east flow to persist. VFR conditions continue with east winds as high pressure dives to the southeast, east of our forecast area.
328 PM EDT Sun Sep 10 2017 High pressure will continue to build into the area today and strengthen through the upcoming work week.
215 PM CDT Sun Sep 10 2017 A cold front currently stretching from Sherwood south to Glen Ullin and into central South Dakota will continue moving east this afternoon, clearing the James River valley shortly after 06z Monday. Quite a density gradient as dewpoints are in the lower 60s ahead of the front, with mid and upper 40s coming in behind the front. Although there could be a brief, isolated shower, the high resolution models are scarce in terms of any significant reflectivity's associated with the front through this evening. With plenty of dry air in the lower levels, will go along with that idea and keep the forecast dry. Behind the cold front, smoke/haze evident across the west per surface observations.
450 PM CDT Sun Sep 10 2017 A rather tranquil weather pattern will exist across the southern high plains this week as an upper level ridge of high pressure dominates the region.
349 PM CDT Sun Sep 10 2017 (Tonight and Monday) An upper level ridge centered over Colorado will continue to dominate the weather across West Central Texas. Ideal radiational cooling conditions are once again forecast overnight, with lows dropping into the mid to upper 50s for most locations, although a few low lying areas may drop into the lower 50s.
147 PM EDT Sun Sep 10 2017 High pressure centered over the southern Great Lakes will keep dry conditions over the Ohio Valley today. As mid-level ridging moves to the east on Monday, the remnants of Hurricane Irma will move north into the Tennessee Valley.
The light winds, clear sky, and low dewpoints should yield another seasonably cool night and went a degree or two below the cooler MAV guidance for tonight. Expect highs to range from the low to upper 70s.
In any case, the models have been consistently drying up the precip along the western flank of the low.
1013 PM EDT Sun Apr 23 2017 An approaching low pressure system will slowly cross the region tonight through Monday night bringing showers and thunderstorms.
The cold front approaching Madison will continue wwd this evening across south central WI. The cold front moved through southeast WI early this afternoon and temperatures dropped over 20 degrees in 20 minutes.
High clouds continue to stream northward moisture swirling around a potent upper low over TN surges our way. The HRRR shows light rain just beginning to creep up over the Mason-Dixon line counties shortly after sunrise, otherwise it will remain dry tonight with a ridge of high pressure holding on across the northern tier counties of PA, while the northern extent of deepening, moist easterly flow off the Atlantic advects north to near the Mason/Dixon line well after midnight.
1129 PM CDT Sun Apr 23 2017 Pocket of warmer air was located across the central plains this afternoon with a warm front over the northern plains near the South Dakota North Dakota border. Significantly colder north of the warm front with temperatures in the 30s at 18z across North Dakota. This colder air is forecast to begin to spread south on Monday behind a cold front which models bring into eastern Nebraska by late afternoon before stalling out across the area through Monday night.
/issued 1008 PM CDT Sun Apr 23 2017/ An upper level low pressure system remains located across Middle Tennessee this evening. Clouds associated with the upper level low cover much of West Tennessee and North Mississippi. Models show the back edge of the clouds stalling out over the next couple of hours and then retrograding westward to the MS River as the upper level low begins to shift to the south. The clouds and rain are associated with an upper level low which moved across west Tennessee this morning. The upper level low will continue to move southeast and each northern Alabama tonight. By Monday morning, the upper low should be over western Georgia so most of the clouds and rain will be gone.
A weak 850 hPa thermal ridge atop calm surface winds will push Sunday afternoon highs into the low to perhaps mid 70s, particularly across eastern Kansas and western Missouri. Adequate mixing will also help to nudge Monday temperatures up slightly compared to Sunday underneath a thin cirrus canopy, generally rising into the low to mid 70s across the local area.
Birds have taken flight northbound from the island chain and from the northern coast of Cuba, clearly displayed on the low-level reflectivity loop over the past hour or so. The low pop, 10 percent, from the afternoon zone issuance is plenty to cover that small possibility. On this date in Florida Keys weather history, in 1991, the low temperature in Key West was 79 degrees.
Fair, dry, and a little warmer midweek as the marine layer shrinks and onshore flow weakens.
516 PM MDT Sun Apr 23 2017 Upper flow is nearly zonal across the northern plains, and a trough is moving into the western CONUS, with the upper low just off the Pac NW coast. Fog over northwestern SD took a while to dissipate today, and with a cold front draped west to east across SD, have lowered expected highs to the north. Temperatures at 2PM range from the 40s across far northwestern SD to the lower 70s across parts of central SD.
Consensus short range model runs showing upper level low moving SE into cntrl GA by 24/12Z. Numerous shwrs across wrn half of mid state will begin to diminish thru early evening per upper level low movement, with only a slight chance of shwrs after midnight Plateau region. The boundary layer will remain loaded with moisture this taf period, as an upper level low begins to move out of the area.
An upper level low continues to deepen as it pushes across the Tennessee valley and into the Deep South this afternoon.
1008 PM CDT Sun Apr 23 2017 An upper level low pressure system remains located across Middle Tennessee this evening. Clouds associated with the upper level low cover much of West Tennessee and North Mississippi. Models show the back edge of the clouds stalling out over the next couple of hours and then retrograding westward to the MS River as the upper level low begins to shift to the south. The clouds and rain are associated with an upper level low which moved across west Tennessee this morning. The upper level low will continue to move southeast and each northern Alabama tonight. By Monday morning, the upper low should be over western Georgia so most of the clouds and rain will be gone.
The upper trough associated with the deeper moisture is expected to track across the mountains later tonight, producing some light snow, beginning after midnight. No precipitation is expected across the plains tomorrow, but temperatures will be a little cooler in the wake of the passing upper level disturbance. Gusty winds over the mountain passes may also develop overnight with passage of the trough.
958 PM EDT Sun Apr 23 2017 Stacked upper low aloft over northern Alabama this evening will pivot into central Georgia by morning. This will push a cold front through our area during the early morning hours. Ceilings will lower overnight as a cold front moves through the area. Southerly winds around 15 to 20 knots this evening will gradually veer to the southwest and decrease overnight, and then veer to the west Monday morning behind the cold front.
Cold core upper low steepening lapse rates a bit this morning and that is creating just enough elevated instability for a few lightning strikes to occur. The boundary layer will remain loaded with moisture this taf period, as an upper level low begins to move out of the area.
1210 AM EDT Mon Apr 24 2017 High pressure should maintain dry weather tonight north of I 68. Low pressure tracking along the East Coast should result in periodic rain chances east of I 79 for the start of the new work week. Surface ridging should maintain dry weather overnight north of I 68. Increasing moisture and ascent on the nrn periphery of the low should return rain chances to areas S of I 68 overnight. As a result, will keep a tight gradient of PoPs along the Ridges, with only slight chance west.
* None A cold front is currently dropping southward through Northern Michigan and Lake Huron and has progressed into northern portions of the Thumb this afternoon. Min temps tonight will actually remain a few degrees warmer for most locations (mid 30s to low 40s) owing to the northeast gradient and influence from the lake. It will still be a nice spring day, as seasonal averages for max temps are still in the low 60s.
Tonight and Monday The latest rap analysis and satellite/radar imagery show a cold front dropping southeast from Merrill to Oshkosh early this afternoon. The cold front will settle across southwest Wisconsin to northern Illinois. The cold front will retreat northward as winds veer to the southeast with low pressure moving across the central Plains.
737 PM EDT Sun Apr 23 2017 High pressure will move off the New England coast through Monday, keeping our weather rain-free during this time frame.
933 PM CDT Sun Apr 23 2017 Skies have cleared across the ArkLaTex this evening as upper-level ridge continues to build areawide. /issued 554 PM CDT Sun Apr 23 2017/ High pressure movg into area, with isold to sct stratocu quickly dissipating, and nw winds around 10 kts quickly decoupling, by sunset.
This high pressure is proving full sun, and light anticyclonic winds rotating around our cwa in a perfect clockwise pattern. A look just to the west in Iowa shows a tightening pressure gradient to low pressure in the western Dakotas developing with gusty south west winds. Winds will become southerly this evening over the entire CWA and by morning, southeast winds will begin to increase to breezy levels from west to east as the high pressure moves to the east.
/Tonight through Monday/ Ridge of high pressure stretched from Texas though southeast Iowa and towards the lower Great Lakes, will settle slowly southeast overnight. A short wave trough will cross the Rockies overnight with surface cyclogenesis commencing across Colorado and Wyoming as a response. This will increase the pressure gradient over Iowa as the developing low pressure moves east into western South Dakota and Nebraska late tonight. High temperatures Monday will be in the low to mid 70s central and south and 60s north where more cloud cover will reside.
The low level jet/moisture transport noses into northern MN by 18z Mon, pushing into and across an west-east running warm front. The combo of this interaction with the upper level trough should be a broad area of showers across northern parts of the region, with perhaps a few showers farther south ahead of the front. Yet one more piece of upper level energy is progged to move northeast into the cold front Wed/Wed night. Trends in the NAM/GFS/EC suggest enough transition east with the front that the higher rain threat would be across IL into southeast WI.
1214 AM EDT Mon Apr 24 2017 A cold front will cross the region overnight. High pressure will build across the region Monday.
Satellite and observations show only mid and hi cloud and no precipitation with the initial push from the approaching trough. The progressive weather pattern really kicks off Monday evening as a broad, positively-tilted upper level trough and associated cold front begin to impact the area.
944 PM EDT Sun Apr 23 2017 High pressure will continue to work east across the region tonight and Monday as a cold front settles south into the Great Lakes. High pressure will regain control over the region as the front lifts back north Monday night.
1145 PM CDT Sun Apr 23 2017 High pressure has brought vfr skc and near calm winds areawide tonight. /issued 933 PM CDT Sun Apr 23 2017/ Skies have cleared across the ArkLaTex this evening as upper-level ridge continues to build areawide.
1030 PM MDT Sun Apr 23 2017 Upper level ridge extends across the Central High Plains, with southwest flow beginning to build into the Central Rockies. At the surface lee trough has developed across eastern Colorado, with high pressure with southerly gradient in place over our CWA.
Ideal radiational cooling tonight with clear skies and light winds will allow temperatures to fall into the lower to mid 50s most place. Temperatures will warm back to normal on Monday as an upper level short wave ridge moves across the region. A weak short wave trough moves across northern Coahuila on Monday and into the Brush Country Monday evening. Onshore flow will develop on Monday and continue through Monday night leading to much warmer low temperatures.
High pressure will bring quiet weather thru the period. As the high shifts east on Monday, gusty south winds will affect the TAF sites during the afternoon, especially across NE OK.
The clouds and rain are associated with an upper level low which moved across west Tennessee this morning. The upper level low will continue to move southeast and each northern Alabama tonight. By Monday morning, the upper low should be over western Georgia so most of the clouds and rain will be gone.
A ragged line of showers associated with a slow moving cold front will continue through south-central Georgia and the eastern Big Bend of Florida over the next few hours. In the wake of the front, lows will fall into the lower to middle 50s under cloudy skies.
839 PM EDT Sun Apr 23 2017 A cold front will cross the region overnight. High pressure will build across the region Monday.
Areas to the northwest will be cooler than areas to the southeast. Over the next 24 hours this front will gradually lift northward as a warm front, but mid level clouds will develop which should keep Monday's temperatures from getting out of control despite the strong dynamic mixing of the boundary layer. The heaviest precip will tied to the warm front across northern MN, so only have around 20 to 30 percent chance for seeing precip in our area.
The low to mid level low pressure system has been moving slowly east, and the associated stubborn clouds will finally be moving east while eroding overnight. /issued 351 PM CDT Sun Apr 23 2017/ Cooler and drier high pressure is currently building into the region at the surface while sharp trough axis aloft swings eastward.
/issued 620 PM CDT Sun Apr 23 2017/ An upper level ridge axis overhead this evening will shift east with increasing westerly flow aloft Monday. The surface and upper level ridge in place will quickly shift eastward allowing for a return of southerly surface winds and zonal flow aloft over the coming 24 hours. However the slightly improved moisture and backed flow east of the dryline should keep highs in the upper 80s, while west of the dryline many spots on the South Plains may make it up into the lower 90s.
1022 PM EDT Sun Apr 23 2017 High pressure will build into the region over the next couple of days, leading to dry conditions and a warming trend through mid week.
WV imagery indicates a weak upper level ridge of high pressure shifting slowly eastward across the Central Plains. Near the surface, a lee side trough of low pressure is slowly strengthening across eastern Colorado. South to southeast winds will continue to increase through this afternoon, in response to lee trough deepening along I-25 in Colorado. Much warmer. Went several degrees above MOS guidance, with afternoon highs in the lower to mid 80s.