Aikyam-Lab/Synoptic-Bench huggingface dataset:
301 AM CST Mon Dec 18 2023 - Cooler today, rising above normal temperatures in the upper 50s through much of the week.
Otherwise, dry and warmer than normal conditions through the week for most. Discussion: The relatively quiet weather pattern will continue for another day as a ridge axis moves over the state.
(Today through Tuesday) The upper level pattern is characterized by ridging from northern Mexico into the Pacific Northwest while large troughing covers the eastern CONUS. This morning, low clouds associated with the trough will hang around the northeast through mid morning, before clear skies prevail across the area. Strongest winds will be on the ridge tops in northeastern counties. High pressure will be centered over the Lower Mississippi River Valley tonight, with cold advection at mid and low levels. During the day tomorrow, cooler temperatures are expected with highs in the mid 40s to lower 50s.
The winds will slowly diminish through the day as high pressure approaches from the plains.
603 AM EST Mon Dec 18 2023 Breezy winds continue with the area between the departing Low over the Carolinas and high pressure building across the Plains. Aloft, an upper trough will swing across the eastern US with deep- layer northwesterly winds ushering in cold, dry air across the region. A Freeze Warning is in effect tonight for areas north of Waycross, GA where freezing and sub- freezing temperatures will be possible.
There are remnant low clouds hanging behind the passing cold front, but these should give way to clear skies this morning as well. The strong NW winds overnight have brought noticeably cooler air to our area, with temperatures running in the mid-low 20s currently. A drier and warmer stretch is expected to return Tuesday as an upper- level ridge builds across the central CONUS.
520 AM CST Mon Dec 18 2023 - Cooler today, rising above normal temperatures in the upper 50s through much of the week.
Sharp secondary trough axis has reached the Western Great Lakes region early this morning. accompanied by a low level cold front now entering our NW CWA. mainly driven by the sharp upper level trough axis and resulting low level cold front. Low level CAA will continue today into this evening as the sharp upper level trough axis and attendant cold front swing thru the Great Lakes region. Upstream low level ridge axis will begin to build into the Western Great Lakes region overnight.
Nonetheless, we will remain well above normal, with highs into the mid to upper 50's for the lower elevations. The more substantive cloud over tonight will also help buffer the overnight lows in the high mountains valleys, which will be less likely to fall below zero this time around. A flat upper level ridge over the area will keep above normal temperatures in place for much of this week. Tuesday will see near record warmth, thanks to the following; It appears we'll see a decent break in the high level cloudiness during peak heating.
547 AM CST Mon Dec 18 2023 (Today through Tuesday) The upper level pattern is characterized by ridging from northern Mexico into the Pacific Northwest while large troughing covers the eastern CONUS. This morning, low clouds associated with the trough will hang around the northeast through mid morning, before clear skies prevail across the area. Strongest winds will be on the ridge tops in northeastern counties. High pressure will be centered over the Lower Mississippi River Valley tonight, with cold advection at mid and low levels. During the day tomorrow, cooler temperatures are expected with highs in the mid 40s to lower 50s.
(Today through Tuesday Night) High pressure will continue to dominate the local weather pattern for the next few days. The highs today will once again be in the mid 60s to around 70 degrees areawide. For tonight, cooler airmass will filter into the region, resulting in lows in the low 30s over the Piney Woods region, the upper 30s for areas north of I-10, the upper 30s to low 40s for areas along and south of I-10, and the mid to upper 40s over the coasts. The cool air will allow for highs to be slightly lower on Tuesday and are expected to be in the upper 50s to low 60s over areas east of I-45 and in the low to upper 60s for areas west of I-45.
445 AM CST Mon Dec 18 2023 (Today) A subtle cold front will move south across the forecast area this morning.
(Today through Tuesday) Strong low pressure is currently situated over the Outer Banks of NC. The low will continue to pull off to the NE with high pressure building in back behind the system. High pressure and dry conditions will persist across the CWA through the remainder of the short term period.
A trough of low pressure will swing eastward across Central California today and tonight, resulting in periods of rain and high elevation snow in the Sierra Nevada.
513 AM CST Mon Dec 18 2023 (Today and tonight) High pressure aloft will act to keep West Central Texas under a more benign weather pattern through the short term, with calm, cool, and mostly clear conditions expected through tonight.
Otherwise, high pressure will build across Deep South Texas as an upper level ridge continues to move into Texas through the short term period. Afternoon high temperatures will reach the low to mid 70s for most locations with overnight low temps from the mid 40s to lower 50s.
509 AM CST Mon Dec 18 2023 (Today and tonight) Surface ridging was expanding over the region early this morning under dry northwest flow. This ridge will be quick to depart by late afternoon ahead of a semi-dirty upper ridge expected to bring a wealth of high clouds this evening and overnight. Although much cooler than yesterday, temps today are still set to top out above normal in the mid and upper 50s.
There is also a potential for light freezing rain in portions of Humboldt County during the morning hours today. Today through Tuesday night A steady stream of moisture is expected to increase throughout today ahead of a low pressure system situated off the west coast. Given the warmer air aloft overriding the cold dome near the surface, the main concern is for light freezing rain across the valleys. Precipitation type changes over to light rain by midday as surface temperatures warm above freezing. Warm, southwest flow will help keep snow levels to about 7,000 feet, with minimal impacts expected for the mountains given the low snowfall amounts.
Colder air was pouring into northeast IL and across Lake Michigan where rain was changing to snow in the vicinity of a cold front and ahead of a strong upper level system. A large positive (500 mb) height anomaly will develop as a persistent ridge builds over eastern North America.
311 AM CST Mon Dec 18 2023 - Freezing fog is occurring over areas near the Mississippi and Ohio River confluence. Impacts are possible on bridges crossing the river and reductions to visibility are also expected. Issued an impromptu freezing fog advisory this morning for areas mainly along the low-lying Ohio/Mississippi River beds based on observational trends. Temperatures are 28-32, this likely won't be a more traditional widespread dense fog event but obs seem to show sudden drops in visibility and with the fog thickest along the river am concerned about impacts on bridges. With lapse rates steepening up this morning under a mid/upper level trough a few snow showers are possible in SWIN today but obs and model trends don't support a more traditional "snow-squall" type situation this far southwest and QPF amounts should be light enough to prevent any accumulation.
By Tuesday night, much of the energy associated with this low will have either shifted north or be absorbed by a secondary H5 low working SE out of the Gulf of Alaska as it works south along the Pacific Coast leading to progressively drier conditions by midweek as temperatures remain mild with highs in the upper 30s and 40s.
416 AM CST Mon Dec 18 2023 - Cooler temperatures expected today, then warmer and much above normal temperatures through the remainder of the forecast.
421 AM CST Mon Dec 18 2023 (Today and tonight) The cold front has moved well into central TX this morning. We'll cool back off to near average this afternoon and overnight under the influence of this high.
607 AM EST Mon Dec 18 2023 (Today and tonight) Much quieter weather will prevail today in the wake of the low pressure system that brought rain and wind to the area over the weekend. High pressure and a dry airmass will build into the area. With winds staying somewhat elevated tonight, wind chill values in the lower 20s are expected across the cooler locations of southeast Alabama and southwest Georgia.
535 AM CST Mon Dec 18 2023 (Today through Tuesday afternoon) A weak cold front has nosed through the Permian Basin this morning and reached the limit of its progression along the Pecos Valley. Despite the weak nature of the front, today's highs are still going to be 5-10 degrees cooler than yesterday and much closer to normal for mid-December. With breezy southerly winds setting up and the axis of an upper ridge passing overhead on Tuesday, the region warms up a few degrees, topping out in the low to mid 60s for most. Dry air in place and subsidence supplied by the upper ridging keeps precipitation chances nil through the short term.
Former low pressure system continues to race up the Eastern Seaboard as broad high pressure builds over the Great Plains. Another reinforcing cold front is poised to move southward down the peninsula this evening and overnight. This will reinforce cooler and drier air. The pressure gradient remains stout with WNW winds 15-20 kts and gusty, veering more to NW/NNW later this evening and overnight and picking back up to 20-25 kts and gusty areawide as a reinforcing cold front boundary slides southward down the peninsula. Cooler with breezy conditions continuing through Tue. A reinforcing cold front drops across the area tonight with winds veering NW/N and speeds remaining elevated near 10 kts.
We will see a reinforcing surge of high pressure push in today. it could be called a weak cold front, but there's little temp/moisture gradient associated with it. While we have very dry conditions in the lower to mid- levels, increasing moisture in the mid and upper levels will lead to a thickening cirrus layer across the region today into tuesday. Have cut back dewpoints slightly and gone with a cooler low in the 40s.
After a cooldown yesterday across the plains, southerly to southwesterly downsloping winds have redeveloped across much of the plains of Central and North-central Montana as a ridge of high pressure builds in from the west. These mild temperatures will persist through the rest of the week, as flow aloft oscillates between southwesterly and westerly while upper level ridging persists.
511 AM CST Mon Dec 18 2023 - Cooler temperatures expected today, then warmer and much above normal temperatures through the remainder of the forecast.
(Today and tonight) High pressure aloft will act to keep West Central Texas under a more benign weather pattern through the short term, with calm, cool, and mostly clear conditions expected through tonight.
500 AM PST Mon Dec 18 2023 Chances for showers will steadily increase today and Tuesday as atmospheric moisture increases ahead of trough over the Pacific.
Satellite and upper air analysis show moisture starved northwest flow atop Texas and Oklahoma, between a Great Lakes trough and western CONUS ridge. As the ridge axis shifts over the Plains today, northerly winds at the surface will veer to south/southwesterly, becoming slightly breezy at times in the northwest Panhandles this afternoon (peak winds 15-25 mph). Ridging begins to break down and exit the region tonight as a lee trough approaches.
524 AM CST Mon Dec 18 2023 (Today through Tuesday Night) High pressure will control the weather pattern through the short term promoting calm and dry conditions.
557 AM MST Mon Dec 18 2023 An upper ridge will linger over the Rockies through the week as an upper low drops from the Gulf of Alaska south along the west coast to Baja California by the end of the week.
506 AM CST Mon Dec 18 2023 - Freezing fog is occurring over areas near the Mississippi and Ohio River confluence. Impacts are possible on bridges crossing the river and reductions to visibility are also expected. Issued an impromptu freezing fog advisory this morning for areas mainly along the low-lying Ohio/Mississippi River beds based on observational trends. Temperatures are 28-32, this likely won't be a more traditional widespread dense fog event but obs seem to show sudden drops in visibility and with the fog thickest along the river am concerned about impacts on bridges. With lapse rates steepening up this morning under a mid/upper level trough a few snow showers are possible in SWIN today but obs and model trends don't support a more traditional "snow-squall" type situation this far southwest and QPF amounts should be light enough to prevent any accumulation.
309 AM CST Mon Dec 18 2023 - The higher terrain area of the Prairie Coteau will see southerly winds with gusts of 30 to 45 mph later tonight into the early morning hours on Tuesday.
621 AM EST Mon Dec 18 2023 (Today through Tuesday) Low pressure will move northeast along the northeastern coast of the United States, as high pressure over the North Central United States moves southeast into the Southeastern United States. however, the wind speeds around 5 mph over the interior areas will make the wind chill readings be in the lower to mid-40s except around 40 tonight will make the wind chill readings be in the upper 40s well west metro areas to the lower 50s near the coast.
527 AM CST Mon Dec 18 2023 An arctic cold front will move through the Mid-South later today, bringing a very cold airmass into the region later tonight into Tuesday morning with temperatures falling to the 20s areawide. A warming trend will begin by midweek as high pressure gradually moves east.
The next cold front was dropping southeast through southern IN, IL and MO at this hour and will arrive early to mid afternoon.
An arctic cold front will move through the Mid-South later today, bringing a very cold airmass into the region later tonight into Tuesday morning with temperatures falling to the 20s areawide. A warming trend will begin by midweek as high pressure gradually moves east.
- Possible Weather Impacts Christmas eve and Christmas day High pressure over northeast North Dakota at 12z bringing light winds and for some the coldest temps of the winter season with several areas near zero. High pressure moves east pretty quick today with return southerly flow setting up as it moves out. High pressure will move quickly over the Red River valley today and into west central Minnesota by late today. Tuesday will see weak cold front drop south as winds turn light northerly behind it.
(Today and tonight) The cold front has moved well into central TX this morning. We'll cool back off to near average this afternoon and overnight under the influence of this high.
526 AM CST Mon Dec 18 2023 - The higher terrain area of the Prairie Coteau will see southerly winds with gusts of 30 to 45 mph later tonight into the early morning hours on Tuesday.
High pressure will move quickly over the Red River valley today and into west central Minnesota by late today. Tuesday will see weak cold front drop south as winds turn light northerly behind it.
1131 AM CST Mon Dec 18 2023 (Today and tonight) Surface ridging was expanding over the region early this morning under dry northwest flow. This ridge will be quick to depart by late afternoon ahead of a semi-dirty upper ridge expected to bring a wealth of high clouds this evening and overnight. Although much cooler than yesterday, temps today are still set to top out above normal in the mid and upper 50s.
108 PM MST Mon Dec 18 2023 Upper ridge will continue to dominate our weather into Tuesday night with mild and dry conditions. This lower pressure over central MT will act constructively with relatively higher pressure over NW WY to produce a strengthened pressure gradient over the Beartooth/Absaroka Mountains. Tuesday night should be a little cooler under mostly clear skies, with low temperatures again in the 20s and 30s.
1254 PM MST Mon Dec 18 2023 Key Messages - 1 - High pressure continues today with increasing clouds from the west-southwest.
1113 AM CST Mon Dec 18 2023 - The higher terrain area of the Prairie Coteau will see southerly winds with gusts of 30 to 45 mph later tonight into the early morning hours on Tuesday.
Temperatures across the Island Chain are currently in the lower to mid 70s with dew points hovering near 60 degrees. A winter low pressure system continues moving swiftly northward into eastern Ontario, Canada with a broad northwest flow on its backside. High pressure is also starting to build eastward from the central Plains towards the Ohio and Tennessee Valleys which is keeping a healthy pressure gradient across much of Florida and the Keys. Across the Island Chain, winds are northwest to north 10 to 15 mph, except near 15 mph for the Lower Keys. In its wake, a broad northwest flow is present across much of the eastern United States as high pressure over the central Plains starts to slide and build eastward into the Ohio and Tennessee Valleys.
---BMickelson Previous discussion: An upper ridge will linger over the Rockies through the week as an upper low drops from the Gulf of Alaska south along the west coast to Baja California by the end of the week. PATTERN: Upper-level high pressure ridge remains in control with lee-side partly to mostly cloudy skies up and over the Rocky Mountains and adjacent northern high plains region.
1110 AM CST Mon Dec 18 2023 - Cooler temperatures expected today, then warmer and much above normal temperatures through the remainder of the forecast.
(This afternoon through Tuesday night) Upper level ridge that is currently keeping skies mainly clear will maneuver across the region over the course of tonight and tomorrow. Highs move up into the low to mid 60s area wide Tuesday afternoon.
(Tonight through Tuesday night) Key Message: - There's a MODERATE risk of Rip Currents today Settled and dry conditions are expected during the short term period with a mid-level low over the Great Lakes region and ridging over the Rocky MTNS. Temperatures today and tomorrow across a majority of the region are expected to top out in the low to mid 70s with overnight lows tonight in the mid 40s inland to 50-60 degrees closer to the coast. Lows tomorrow night will be warmer by about 5 degrees.
This is due to warm subtropical moisture ahead of a persistent upper-level low pressure system off the coast. Highs will reach as warm as the lower 70's in the southern San Joaquin Valley and mid to upper 60's in many valley locations, based on latest guidance and trends. The Winter Storm Watch for the higher elevations of the Sierra Nevada has been upgraded to a Winter Storm Warning.
There is still a slight chance of freezing rain in portions of SE Oregon, although any precip amounts are forecast to be light. The inversion will weaken as well, with the low clouds/fog diminishing through the afternoon. Areas of IFR and low MVFR in clouds/fog lingering across the lower Snake Plain through roughly 20Z this morning (vicinity KEUL-KONO).
1109 AM CST Mon Dec 18 2023 (Today through Tuesday Night) High pressure will control the weather pattern through the short term promoting calm and dry conditions.
(This evening through Tuesday) Dry and mild weather is expected tonight and tomorrow as upper level ridging moves overheard. Usually southwest winds will help boost high temperatures but persistent upper level cloudiness will offset much warming with highs only a bit warmer in the upper-50s and 60s.
- Temperatures start to moderate by midweek with temperatures trending warmer than normal late this week and weekend.
1118 AM CST Mon Dec 18 2023 - Cooler and windy today.
Upper ridging will move eastward through the early week, allowing for above normal temperatures through the week.
152 PM CST Mon Dec 18 2023 Weather conditions will remain quiet for tonight as global guidance highlights a cold front tracking south across the region. Along with the aforementioned cold front, colder nighttime temperatures will be the primary focus for the short term period as dry northwest flow continues to bring a significant surge of continental polar air across the forecast area. Given the presence of cold air advection for Monday night, went ahead and leaned towards cooler guidance to lower overnight temperatures. By tomorrow, the cold front will continue to shift further south towards the Atlantic seaboard. The combination of sufficient daytime heating and lack of cloud cover will help afternoon highs peak into the low/mid 50s across the forecast area.
132 PM CST Mon Dec 18 2023 - The higher terrain area of the Prairie Coteau will see southerly winds with gusts of 30 to 40 mph later tonight into the early morning hours on Tuesday.
125 PM MST Mon Dec 18 2023 124 PM MST Mon Dec 18 2023 - Warm and dry weather through the week - Precipitation possible Christmas Eve and Christmas Day, along with colder temperatures High-amplitude ridging covers the western CONUS, with northwest flow over the northern plains. A warm front is currently draped across our CWA. Upper ridging will slowly trek across the US this week, keeping our weather warm and dry.
A dry cold front will cross the area this evening and allow even drier and cooler air to filter into the region Tuesday and Tuesday night. Tonight, a reinforcing cold front will push through the forecast area, driven by an upper trough digging across the Great Lakes and Ohio Valley region. A lake wind advisory remains in effect with the strong cold advection and a 30-40 knot low level jet which should mix down over the warmer lake waters. The upper level trough will be along the coast Tuesday morning with high pressure over the mid MS River Valley.
Snow squall parameters continue to be high (3 to 4) across the Bluegrass but the road temperatures have remained well above freezing in the 40s. Strong arctic cold front was draped just along the Ohio River and winds ahead and along the boundary continued to gust between 25- 30mph with a few gusts reaching 35mph. Winds and snow showers will come to an end this evening as the front pushes through and the deep upper trough works off to the east. Lows will drop into the teens and while winds are expected to diminish overnight, they will do so slowly keeping windchill values in the low teens with even a few single digit values across southern IN.
(Rest of today through Tuesday) Low pressure will move northeast along the northeastern coast of the United States, as high pressure over the North Central United States moves southeast into the Southeastern United States. however, the wind speeds around 5 mph over the interior areas will make the wind chill readings be in the lower to mid-40s except around 40 tonight will make the wind chill readings be in the upper 40s well west metro areas to the lower 50s near the coast.
Cold front moves through tonight setting off lake effect snow showers mainly over the finger lakes region with light accumulations expected.
1153 AM CST Mon Dec 18 2023 (Today and tonight) The cold front has moved well into central TX this morning. We'll cool back off to near average this afternoon and overnight under the influence of this high.
1104 AM CST Mon Dec 18 2023 (Today through Tuesday Night) High pressure will continue to dominate the local weather pattern for the next few days. The highs today will once again be in the mid 60s to around 70 degrees areawide. For tonight, cooler airmass will filter into the region, resulting in lows in the low 30s over the Piney Woods region, the upper 30s for areas north of I-10, the upper 30s to low 40s for areas along and south of I-10, and the mid to upper 40s over the coasts. The cool air will allow for highs to be slightly lower on Tuesday and are expected to be in the upper 50s to low 60s over areas east of I-45 and in the low to upper 60s for areas west of I-45.
1100 AM CST Mon Dec 18 2023 (Today and tonight) High pressure aloft will act to keep West Central Texas under a more benign weather pattern through the short term, with calm, cool, and mostly clear conditions expected through tonight.