Aikyam-Lab/Synoptic-Bench huggingface dataset:
- Temperatures turn sharply colder after the cold front's passage. Wednesday and Thursday highs will struggle into the 40s, with Wednesday night lows in the 20s and Thursday night lows in the lower half of the 30s. Currently sfc cold front is working through from about Marble Hill, MO northeastward to Marion and approaching Mt.
236 AM MST Wed Feb 28 2024 - Windy conditions today, especially in the higher elevations and across central Wyoming. - Ridging brings warmer temperatures back to the region for the latter half of the week, with temperatures 5 to 10 degrees above normal.
414 AM MST Wed Feb 28 2024 - Windy conditions today, especially in the higher elevations and across central Wyoming. - Ridging brings warmer temperatures back to the region for the latter half of the week, with temperatures 5 to 10 degrees above normal.
The precip has been outrunning the deeper cold air mass a bit and precip has been starting as rain and changing to a brief period of snow before ending, with brief period of sleet or freezing rain in the transition zone.
The only activity that KBYX radar has picked up on is a few very weak, shallow showers along a Cuban land breeze located southwest of the Lower Keys. Temperatures in most island communities are in the lower 70s at this hour. High pressure in the western North Atlantic will maintain gentle to moderate generally easterly breezes, which will aid in temperatures rising to slightly above normal for this time of year. A cold front associated with a low pressure system currently over the Great Lakes region will move through the Southeast today. Unfortunately for the Florida Keys, this cold front is not expected to move through and will likely decay across the northern portion of the peninsula this weekend. High pressure will build in behind this front, and winds will once again increase beginning on Thursday.
Upper troughing is present over the center of the CONUS early this morning, having shunted yesterday's cold front well southeast of the forecast area.
A weak upper level low will move through Arizona, bringing some rain and high elevation snow showers to the White Mountains this evening into early Thursday.
Visible satellite and observations depict a cold front approaching the Appalachian Mountains, with a well-defined (albeit slowly decaying) squall line along its leading edge. Closer to home, anticylonic flow around an area of high pressure centered in the west-central North Atlantic is resulting in gentle to moderate east to southeast breezes. The 12z sounding at KEY highlighted a nearly dry adiabatic well-mixed layer from the surface to around 850 mb, capped by a formidable inversion associated with a low- level ridge. From synopsis, as a cold front continues to move across the Southeast this afternoon, east to southeast breezes will slacken. Strong high pressure will build across the Eastern Seaboard on Thursday.
Highs today in the valleys and mountains are forecast to be 5 to 10 degrees warmer than yesterday with temperatures about the same as yesterday for the coast and deserts. Onshore flow will increase for the end of the week, spreading cooler conditions inland. A low pressure system moving inland along the West Coast this weekend will bring rain, mountain snow, cooler conditions, and strong and gusty west winds for the mountains and deserts.
Near the surface, a broad area of high pressure is moving slowly southeast through western/central Kansas into northern Oklahoma. Tranquil conditions are forecast during much of the period as a zonal flow aloft persists across the high plains of eastern Colorado and western Kansas. Widespread below freezing temperatures are forecast tonight with the NBM 4. A dry pattern continues through the weekend as medium range ensembles indicate westerlies aloft prevailing across the Western High Plains even as a fairly broad upper level trough of low pressure approaches through the Pacific Northwest.
1203 PM EST Wed Feb 28 2024 - Cold front pushing through early this morning - Travel Impacts Today - Warming up over the Weekend No changes to the going headlines are planned for now. - Cold front pushing through early this morning As of 230 am, the cold front stretched from Mount Pleasant, through Grand Rapids to just west of Kalamazoo. It was approaching the freezing mark already near Ludington. Bridges and overpasses will be the first to cool down and become icy.
A cold front approaches this evening bringing a slight chance of showers, mainly for the nature coast.
The cold front will clear the entire CWA over the next 15-30 minutes along with the remaining storms. Behind the front, temperatures have dropped into the low to mid 40s. (This afternoon through Thursday Night) Conditions are quieter this afternoon compared to this morning but also much cooler. Winds will decrease this evening as high pressure approaches from the west.
121 PM MST Wed Feb 28 2024 An area of low pressure will cross southern Arizona this afternoon and evening, bringing widespread showers and isolated thunderstorms.
1015 AM EST Wed Feb 28 2024 Low pressure and a strong cold front will move east across the Great Lakes and Ohio Valley today, bringing windy conditions along with much colder temperatures. High pressure will build quickly east into the Ohio Valley tonight, resulting in clearing skies and drier air. The high will persist over the region into Thursday with below normal temperatures expected. A strong cold front will continue to quickly push east through our forecast area today. Skies will be mostly clear tonight and sunny on Thursday thanks to 1035mb high pressure tracking across Kentucky.
1202 PM CST Wed Feb 28 2024 With the passage of the cold front, today's maxT's have already been reached across the ArkLaTex. A strong cold front has exited the region late this morning, with drier post-frontal air having spilled S across the region in its wake, thus eroding the MVFR cigs in place earlier this morning. Some patchy areas of -RA also can not be ruled out over these areas through the remainder of the TAF period, but given the low confidence and lack of impacts in regards to lowering vsbys/cigs, have not inserted mention in the TAFs attm.
1227 PM CST Wed Feb 28 2024 (Today and tonight) Temperatures will be much cooler today behind the cold front, with highs dropping around 35 degrees from yesterday. The cold front has moved through the Concho Valley and is entering the Northwest Hill Country and Northern Edwards Plateau as of 3 AM. Wind chills will be near or below freezing for much of the Big Country this morning. An upper level low has developed near Baja California and will progress east towards West Central Texas throughout the day today. As it nears our area, lift ahead of the trough will increase our rain chances. Temperatures Thursday morning will be primarily in the mid 30s to near 40, but a few areas could drop near freezing.
1243 PM EST Wed Feb 28 2024 Low pressure and a strong cold front will move east across the Great Lakes and Ohio Valley today, bringing windy conditions along with much colder temperatures. High pressure will build quickly east into the Ohio Valley tonight, resulting in clearing skies and drier air. The high will persist over the region into Thursday with below normal temperatures expected. A strong cold front will continue to quickly push east through our forecast area today. Skies will be mostly clear tonight and sunny on Thursday thanks to 1035mb high pressure tracking across Kentucky.
1214 PM CST Wed Feb 28 2024 (Today through Thursday night) For today, much lighter winds along with sharply cooler temperatures are anticipated in the wake of the most recent cold frontal passage.
For Thursday, weak ridging both surface and aloft building into the region.
1129 AM CST Wed Feb 28 2024 - The cold front has finished moving through central and southeastern Illinois tonight, ending the severe risk. Skies will remain mostly sunny across the area this afternoon, but will provide little in the way of warmth, given the cold high pressure that is in place over the area. Afternoon highs should reach to freezing and above over most of central and southeast IL, but some places in the north parts of the CWA may only reach 30 or 31 degrees. Auten As we wave goodbye to the cold front, we welcome in MUCH colder temperatures than what we have been seeing over the previous days. With the strong winds following behind the cold front, wind chills are going to get into the single digits this morning.
1124 AM CST Wed Feb 28 2024 A cold front stretches from the Cumberland Plateau in Tennessee back through Central Mississippi. Showers and thunderstorms have exited the forecast area with some clearing occurring mostly along and north of I-40 thus far as high pressure builds back into the Mid-South. Cooler temperatures and dry weather expected for the remainder of the day. CJC A Wind Advisory remains in effect areawide until 9AM today for strong winds associated with a cold front. Much cooler and dry conditions will prevail for the rest of today and tomorrow as strong high pressure builds in.
254 PM CST Wed Feb 28 2024 - Expect temperatures to fall quickly below freezing tonight to bottom out in the upper teens to low and mid 20s as high pressure builds across the area.
151 PM EST Wed Feb 28 2024 Showers and gusty winds will accompany a cold front this afternoon. - Wind Advisory for Preston/Tucker ridges. _______________________________________________________________ Cold front currently entering the PGH metro area will rapidly transition east with gusty winds and much colder and drier air spreading in behind it. Overnight lows will be in the mid 20s, and combined with the continued gusty winds, it will feel like it's in the teens most places and around zero in the ridges.
1235 PM EST Wed Feb 28 2024 - Cold front pushing through early this morning - Travel Impacts Today - Warming up over the Weekend No changes to the going headlines are planned for now. - Cold front pushing through early this morning As of 230 am, the cold front stretched from Mount Pleasant, through Grand Rapids to just west of Kalamazoo. It was approaching the freezing mark already near Ludington. Bridges and overpasses will be the first to cool down and become icy.
Latest 28/12Z model and numerical guidance continue to monitor an upper level trough moving NE from southern Arizona. Lift along and downstream of the main trough axis in-conjunction with decent H850-700 theta-e advection should give suffice amount of low level moisture for precip to develop.
GEFS painting the highest amounts, EC ensemble much lower and the Canadian in the middle.
1101 AM MST Wed Feb 28 2024 - Windy conditions today, especially in the higher elevations and across central Wyoming. - Ridging brings warmer temperatures back to the region for the latter half of the week, with temperatures 5 to 10 degrees above normal.
Otherwise, look for warmer and drier conditions through the end of the week. This west to east flow aloft will lead to warmer and drier conditions across much of northern Arizona through the end of the week.
Another cool down is expected tonight, as high pressure passes through the region. With high pressure passing by, the pressure gradient overhead will lighten up, allowing the winds to decrease throughout. Tomorrow, LLVL southerly flow kicks in on the backside of the passing high pressure. Temperatures are forecast to increase into the low-mid 50s for much of the area, especially on the west side of the Mississippi River.
251 PM EST Wed Feb 28 2024 High pressure will build east into the Ohio Valley tonight and Thursday, bringing dry weather but much colder temperatures. The high will then move east of the area Thursday night.
(This evening through Thursday Night) In the wake of today's cold front passage, tonight's lows will be accordingly chilly, though the extent to which we cool will depend on the contest between cold air advection and lingering cloud cover. While the ArkLaTex saw little, if any, precip with this early week system, our next weathermaker will not be far behind, induced by a secondary trough pushing northeast out of the Intermountain West tomorrow. Early analysis continues to show a weak area of ridging in advance of this trough, but a weak impulse of energy riding along the ridge looks to result in some low end PoPs beginning early tomorrow along the I-20 corridor before expanding in confidence and coverage into the afternoon and early evening hours.
220 PM CST Wed Feb 28 2024 - Cooler temperatures will continue tonight, but a warming trend will quickly return for the rest of the week and into the weekend.
The high cirrus will continue this evening and overnight tonight. The low temperatures this morning were (on average) about 2-5 degrees below what was forecast yesterday. Most locations will see another freeze tonight, with higher confidence of freezing temps north of I-40. The approaching trough will have to fight very dry air between the surface and 500mb for precipitation, but model consensus indicates this column will gradually saturate mid-late afternoon and through the evening. At this time, was only confident in adding a wintry mix (rain, sleet, snow) to the higher terrain areas in southeast OK and northwest AR.
1032 AM CST Wed Feb 28 2024 - The cold front has finished moving through central and southeastern Illinois tonight, ending the severe risk. Skies will remain mostly sunny across the area this afternoon, but will provide little in the way of warmth, given the cold high pressure that is in place over the area. Afternoon highs should reach to freezing and above over most of central and southeast IL, but some places in the north parts of the CWA may only reach 30 or 31 degrees. Auten As we wave goodbye to the cold front, we welcome in MUCH colder temperatures than what we have been seeing over the previous days. With the strong winds following behind the cold front, wind chills are going to get into the single digits this morning.
So Today and Thursday look fairly similar temperature-wise , in the low 50s Today most areas, to a few degrees warmer in the west on Thursday. There is not a lot of difference in the different model runs, a fairly good consensus for high in the mid 50s, but a few of the climate guidance, and climate weighted model blends favor the possibility for warmer temps around the Colorado line, by forecasting around 60F or more around Scott City, Lakin and Elkhart and westward.
1131 AM CST Wed Feb 28 2024 (Today and tonight) Significantly cooler temperatures will move into the region today behind a cold front along with increasing chances of wintry precipitation by daybreak on Thursday morning. A southern stream trough currently moving onshore in northern Baja California is forecast to eject eastward across northern Mexico and the southwestern US today and tonight. There is good lift with this short wave trough but the amount of moisture available will be the limiting factor to precipitation accumulation.
With some colder air aloft, some chance that a little sleet will mix in, mainly in the some of the higher elevations where the frozen precip will have less time to melt before reaching the ground. Cooler east where some areas will struggle to reach 50.
1055 AM CST Wed Feb 28 2024 A cold front stretches from the Cumberland Plateau in Tennessee back through Central Mississippi. Showers and thunderstorms have exited the forecast area with some clearing occurring mostly along and north of I-40 thus far as high pressure builds back into the Mid-South. Cooler temperatures and dry weather expected for the remainder of the day. CJC A Wind Advisory remains in effect areawide until 9AM today for strong winds associated with a cold front. Much cooler and dry conditions will prevail for the rest of today and tomorrow as strong high pressure builds in.
After some mild weather of late, it looks like we will have one more visit from ole man winter tonight with winds helping with CAA into the region as a large ridge settles into E Conus. Lows will range greatly tonight from the upper 20s far N to the lower 40s far S. Temperatures will rebound some during the day Thursday as the ridge center pushes EWD toward the Atlantic Seaboard with highs in the lower 50s N to the lower 60s SE and lighter NERLY flow.
Winds will continue to decrease further below Wind Advisory criteria as a upper trough begins to eject northeast out of the Mississippi River Valley. Highs on Thursday are expected to be slightly below normal, with temperatures in the lower to upper 50s.
Quiet and benign conditions this morning will persist throughout the day as the ridge axis stretches across the state and upper ridging centered in the southern GOMEX drifts closer to FL. Boating conditions will be poor to choppy well ahead of a weakening cold front that will approach the local waters into Thursday morning. Mid/upper level ridging will continue to build over the state of Florida today which will result in another dry day across east central Florida.
1136 AM CST Wed Feb 28 2024 (Today through Thursday Night) The cold front is currently pushing SE through the state. winds will relax as high pressure settles across the region. and temps should remain just above freezing in the NW.
/AJ/ Through tonight: A cold front now extends from roughly Paducah KY to Little Rock AR to Texarkana and continues to progress toward our region early this morning. Though the LLJ will begin to pull east of the area this morning, a sharp pressure gradient along the cold front and CAA in its wake will maintain fairly gusty conditions through the day.
Conditions will stabilize tonight as the gradient relaxes tonight, and cooler drier air moves in. The cooler weather will not last very long though, so enjoy it while you can. A coastal trough will develop tomorrow afternoon, which will aid in increasing rain chances mainly over the waters.
513 PM CST Wed Feb 28 2024 - Expect temperatures to fall quickly below freezing tonight to bottom out in the upper teens to low and mid 20s as high pressure builds across the area.
(This afternoon through Thursday Night) Conditions are quieter this afternoon compared to this morning but also much cooler. Winds will decrease this evening as high pressure approaches from the west.
850 PM CST Wed Feb 28 2024 - Cooler temperatures will continue tonight, but a warming trend will quickly return for the rest of the week and into the weekend.
521 PM CST Wed Feb 28 2024 - Cooler temperatures will continue tonight, but a warming trend will quickly return for the rest of the week and into the weekend.
600 PM CST Wed Feb 28 2024 (00Z TAFS) MVFR ceilings associated with a cold front currently pushing offshore will quickly rise to VFR tonight. (Now through Thursday) A broken band of light to briefly moderate showers along a cold front is currently approaching the I-65 corridor. Normally with the passage of a cold front we expect clearing skies.
Much drier air has built into the area behind the departing cold front, and dewpoints have dropped faster than forecast. For Thursday, weak ridging both surface and aloft building into the region.
512 PM CST Wed Feb 28 2024 Cooler and drier air will continue to build into the Lower Mississippi Valley tonight into Thursday.
High temps near 50F Fri, low 60s for Sat, near 70 for Sun, but cooler near the lake.
Cold front continues to move across the southeast states and will move into the northern Nature Coast later tonight and eventually washing out near or just north of the Interstate 4 corridor late Thursday morning. Conditions will begin to improve during the mid to late morning as northeast to east winds setup and increase, but likely still a rather mostly cloudy and a little bit cooler day across much of the area, with the exception being southwest Florida where some more sun and warm temperatures are still expected. A cold front approaches this evening bringing a slight chance of showers, mainly for the nature coast.
442 PM EST Wed Feb 28 2024 Expect warm weather and breezy winds today ahead of a cold front. Thursday will be cooler and drier as high pressure passes to the north.
638 PM EST Wed Feb 28 2024 High pressure will build east into the Ohio Valley tonight and Thursday, bringing dry weather but much colder temperatures. The high will then move east of the area Thursday night.
(This evening through Thursday) Much chillier temperatures are in place compared to recent days, with many areas anywhere from 25-35 degrees cooler than they were this time yesterday. It will take time for the lower levels to saturate, but evaporational cooling will likely bring temperatures into the range for snow or a rain/snow mix across western Oklahoma and portions of western north Texas Thursday morning. Highs on Thursday will be coolest west, likely in the low 40s, with upper 40s to near 50 to the north, east, and south.
901 PM EST Wed Feb 28 2024 Expect warm weather and breezy winds today ahead of a cold front. Thursday will be cooler and drier as high pressure passes to the north.
- Wind Advisory for Westmoreland/Fayette/Indiana/Preston/Tucker ridges. _______________________________________________________________ The cold front has passed through the area but the increased gradient and pressure rise across the area is still allowing some 40 to 50 mph winds to mix to the surface. Thus have issued a wind advisory for the higher terrain into SW PA as well through tonight into tomorrow morning. Expect lows in the lower 20s being close to normal for this time of year.
531 PM CST Wed Feb 28 2024 (This evening through Thursday) Much chillier temperatures are in place compared to recent days, with many areas anywhere from 25-35 degrees cooler than they were this time yesterday. It will take time for the lower levels to saturate, but evaporational cooling will likely bring temperatures into the range for snow or a rain/snow mix across western Oklahoma and portions of western north Texas Thursday morning. Highs on Thursday will be coolest west, likely in the low 40s, with upper 40s to near 50 to the north, east, and south.
A low pressure system will move through southern Arizona this afternoon and evening bringing some showers and isolated thunderstorms to the area.
506 PM CST Wed Feb 28 2024 (This afternoon through Thursday Night) Conditions are quieter this afternoon compared to this morning but also much cooler. Winds will decrease this evening as high pressure approaches from the west.
(Now through Thursday) A broken band of light to briefly moderate showers along a cold front is currently approaching the I-65 corridor. Normally with the passage of a cold front we expect clearing skies.
950 PM EST Wed Feb 28 2024 High pressure will build east into the Ohio Valley tonight and Thursday, bringing dry weather but much colder temperatures. The high will then move east of the area Thursday night.
Cooler and drier air will continue to build into the Lower Mississippi Valley tonight into Thursday.
405 PM EST Wed Feb 28 2024 - Chilly tonight as skies clear out and winds go very light in valleys, leading to a well defined ridge valley temperature split across the area.
Large scale subsidence will strengthen during the course of the night in the wake an upper level negatively tilted trough axis. The continued departure of the long wave trough axis to eastern Canada will result in rising geopotential heights across the the Great Lakes region on Thursday.
413 PM CST Wed Feb 28 2024 (This evening through Thursday Night) In the wake of today's cold front passage, tonight's lows will be accordingly chilly, though the extent to which we cool will depend on the contest between cold air advection and lingering cloud cover. While the ArkLaTex saw little, if any, precip with this early week system, our next weathermaker will not be far behind, induced by a secondary trough pushing northeast out of the Intermountain West tomorrow. Early analysis continues to show a weak area of ridging in advance of this trough, but a weak impulse of energy riding along the ridge looks to result in some low end PoPs beginning early tomorrow along the I-20 corridor before expanding in confidence and coverage into the afternoon and early evening hours.