Aikyam-Lab/Synoptic-Bench huggingface dataset:
1242 AM EST Wed Dec 27 2023 Rain continues to be over the area through tonight, with activity diminishing early Wednesday morning as cold front pushes through the region. Temperatures will remain above normal into mid- week, but cooler conditions are expected late this week and over the upcoming weekend following the passage of a cold front. Widespread showers continue across the forecast area this evening ahead of a cold front located over central Georgia that will continue to push into the region early Wednesday morning. Temperatures will remain nearly steady in the lower 60s before falling into the 50s behind the front as it crosses the region. A closed upper level low pressure system will slowly meander eastward during the latter half of this week.
1119 PM CST Tue Dec 26 2023 (This evening through Wednesday night) Upper low centered to our northeast continues to dominate our weather pattern in the short term. Wednesday, available mid-level moisture begins to reduce as the upper low departs to the east ever so slowly.
236 AM CST Wed Dec 27 2023 - Lingering very light precipitation, in the form of a mix of snow and drizzle, with temperatures right around the freezing mark.
1025 PM CST Tue Dec 26 2023 (This afternoon through Wednesday night) A low pressure system across the central part of the country will be departing to the east, with dry northwesterly flow in its wake resulting in clear conditions. Tuesday night into Wednesday morning, mostly clear skies and light winds will allow temperatures to drop near or below freezing for most of the forecast area.
314 AM EST Wed Dec 27 2023 A cold front will slowly move through the area today, with dry air beginning to filter in behind it this afternoon and evening.
- Temperatures fall below freezing this morning and again tonight and may freeze any lingering water on roadways or sidewalks causing slick spots. Radar this morning is taking on a convective appearance presumably from a little enhancement to the low level lapse rates by Lake Superior as cooler air wraps around the large, but dying low that has affected our weather for the last several days. With temperatures falling below freezing, some of the precipitation is falling as snow and could amount to a quick inch before sunrise for some locations. Otherwise, a mix of freezing rain and rain can be found north of Highway 2 while snow is more prevalent to the south where the colder air is.
1255 AM MST Wed Dec 27 2023 Dry conditions under mostly sunny skies will prevail today with high pressure aloft. Temperatures look to be a little warmer than yesterday with highs in the mid 30s to lower 40s. Areas with snow cover may stay a few degrees cooler as has been the case the past few days.
138 AM CST Wed Dec 27 2023 High pressure and cloudy skies beginning to clear more as we approach dawn will allow for temperatures to radiate down to near the dew point values tonight, falling into the 30s F for most to around 40 F in the Pinebelt. Some typically cooler locations north of I-20 could near freezing by daybreak Wednesday. With temperatures near dew points and freezing, patchy frost will be possible particularly north of I-20 alongside patchy fog. Some chance for locally dense fog will be possible right around dawn for areas along the highway 84 corridor.
Large upper low is currently situated over far southeast Nebraska/Northeast KS. At the surface, low is positioned under the upper low over northeast KS. Light snow showers continue to pin-wheel around the upper low across most of Kansas and this will continue into the evening hours, especially across eastern KS. By 00z Thu the upper low is expected to be situated over central MO. By Fri morning, the upper low will be approaching the Tennessee Valley with north/northwest flow over the Plains. Patchy light snow flurries or even perhaps very light freezing drizzle may linger the next 24 hours across the region, but impacts should remain low, with no accumulation expected.
Overnight, clear skies and diminishing winds should allow temperatures to drop below freezing yet again.
650 AM EST Wed Dec 27 2023 A cold front will slowly move through the area today, with dry air beginning to filter in behind it this afternoon and evening.
543 AM CST Wed Dec 27 2023 - Additional light moisture in the form of light snow and drizzle with temps near freezing will occur today, mainly SE ND into MN, but gradually dimninish in time.
High temperatures today will reach the lower to upper 40s, this is over 10 degrees above seasonal normals for the end of December. We should have another lull in the precipitation overnight, but some precipitation moves back into the area early Thursday morning associated with low pressure passing along the New England coast. Minimum temperatures overnight will dip into the lower to upper 30s, this is about 20 degrees above seasonal normals. As the precipitation moves back into our area early Thursday morning, there's a chance of some freezing rain especially in the Massena, NY area early Thursday morning.
Any lingering low cloudiness should clear out by mid morning, but the mid/upper clouds will hang around today into tonight until another surface front pushes through and brings some drier and cooler air into the area. Much of Thursday should be mostly sunny, but will be 6-12 degrees cooler than today with breezing NW winds to accompany it. On Thursday afternoon, some clouds will return from the NW into our NRN sections ahead of activity associated with an upper low.
Winds will turn northerly overnight in the wake of a cold front. Much cooler temperatures will be the main story with highs today topping out in the lower 60's, becoming lower to middle 50's for highs Thursday. Overnight lows follow suit, with temperatures falling into the lower to middle 30's Wednesday night over interior portions of southeastern MS into southwestern AL.
406 AM CST Wed Dec 27 2023 - Additional light moisture in the form of light snow and drizzle with temps near freezing will occur today, mainly SE ND into MN, but gradually dimninish in time.
456 AM CST Wed Dec 27 2023 (Today and tonight) We continue to follow the meanderings of an occluded low across the lower Missouri Valley for its sensible impacts on our weather. The low will spin a bit eastward during the day, but not far enough away that we won't see another in a series of daily reinforcing cold shots driven by deeper boundary-layer mixing to our north.
427 AM CST Wed Dec 27 2023 Today and Tonight: A closed low pressure system spinning over northwest Missouri early this morning is dominating much of the flow across the central and eastern CONUS today. As high pressure continues to build on the western side of this low pressure system tonight, cooler conditions will once again settle in along the Gulf Coast. Even with perhaps a little flow overnight, Min Temps are generally expected to range from the upper 20s to lower 30s near freezing.
530 AM CST Wed Dec 27 2023 - Lingering very light precipitation, in the form of a mix of snow and drizzle, with temperatures right around the freezing mark.
512 AM CST Wed Dec 27 2023 Clouds will continue to move back into the region this morning as an upper level low pressure system brings a few showers over northern sections of the Mid-South today into this evening.
A band of rain continues to move across the Schoharie and Mohawk Valleys eastward across the Capital District and southern Vermont early this morning in response to a short wave moving through the upper ridge across the region. More widespread rainfall will overspread much of the area today with as the ridging across the region weakens as additional pieces of energy move through the flow ahead of the large closed off upper low over the Midwest.
The low clouds over the plateau are expected to dissipate this morning allowing for everyone to hopefully see some sun before our next disturbance. A lobe of energy will pivot around the upper low this afternoon with some showers associated with the wave.
High temperatures today reach the lower to middle 30s, so not overly cold, although just slightly below expected normals. The next band of snow that extends from central SD through western NE, located with the larger circulation of the upper level low, will also slowly drift eastward today, but not really moving into northeast NE until very late this afternoon, but moreso after 6 pm tonight. Any lingering snow on Thursday could be just west of the forecast area, and another upper low rotating out of the great lakes will bring snow to the Mississippi River valley and likely remain just east of us.
Temps will be above normal again, with highs topping out at around 40 given the potential for filtered sunshine through the high clouds along with the breaks in cloud cover. Increasing moisture and forcing will move in from the northeast tonight as low pressure over the eastern Great Lakes this morning retrogrades towards the area, eventually merging with another low passing by to the south today. Model ensemble probabilities for measurable precip are on the high end, peaking out in the 90-100% range. The best chance for mainly snow will be during the morning hours while surface temps are closer to freezing.
Temps early this AM were somewhat mild with most of the plains above freezing at 2 AM. Some clouds are expected on the backside of the low over the far eastern plains tonight, otherwise it will be clear across the region with min temps falling into the 15 to 25 range over the plains, and from +10 to -10F across the valleys and mtns.
Much cooler temperatures will be the main story with highs today topping out in the lower 60's, becoming lower to middle 50's for highs Thursday. Overnight lows follow suit, with temperatures falling into the lower to middle 30's Wednesday night over interior portions of southeastern MS into southwestern AL.
747 AM CST Wed Dec 27 2023 - Additional light moisture in the form of light snow and drizzle with temps near freezing will occur today, mainly SE ND into MN, but gradually dimninish in time.
621 AM EST Wed Dec 27 2023 (Today and tonight) Quiet weather today as a dry cold front advances from the west and a low traverses to our south.
448 AM EST Wed Dec 27 2023 A large low pressure system will bring periods of steady rain to the area through tonight.
(Today through Thursday Night) Cold front to the northwest will sweep across the state today, bringing increased NW winds and cooler temperatures in its wake. H500 and corresponding sfc cyclones will make slow progress to the ESE across central MO today. As these low pressure systems drift toward the TN/OH Valleys in the coming days, occasional chances for precip will be seen across mainly northern Arkansas.
The upper low continues to rotate lobes of vorticity and mesoscale forcing for bouts of light snow across the area. We are not expecting accumulations that would impact travel after sunrise today given air temps will again rise to above freezing mitigating impacts of any falling snow. Additional lobes of vorticity will rotate along the western periphery of the upper low tonight/Thurs which will keep the area in cyclonic flow and will slow any clearing trend until later Thurs/thu night.
Patchy freezing fog is possible across portions of northeastern NV this morning, including the Elko and Spring Creek areas.
522 AM CST Wed Dec 27 2023 (Today) The upper level low pressure center continuing to impact the region is centered near Kansas City this morning, having very slowly shifted eastward in the past 24 hours. A vort max on the west and south side of the low extends into southeast Kansas and far northeast Oklahoma and is spurring the region of light radar echoes seen in mainly southwest Missouri, northwest Arkansas and adjacent portions of Oklahoma.
442 AM MST Wed Dec 27 2023 Upper ridge will be over Montana the next several days as the slow moving upper low in the Central Plains drifts slowly east through the Midwest.
Clouds will continue to move back into the region this morning as an upper level low pressure system brings a few showers over northern sections of the Mid-South today into this evening.
(Today through Thursday) A new reinforcing cold front will be moving through today. The next way will be cooler temps. This should be capable of bringing in freezing temps to the northern most areas of the CWA.
A modest mid-level trough attached to the Plains low will swing over region and will bring a weak cold front/reinforcing surge of high pressure into Deep South Texas later today. Mild temperatures are expected today with highs ranging from the mid to upper 60s near the coast to the lower 70s elsewhere. Cooler air filters into region tonight courtesy of CAA with overnight temperatures falling into the low 40s across the northern ranchlands, mid to upper 40s for much of the region and the 50s along the beaches. Thursday will be slighlty cooler with highs mainly in the mid to upper 60s.
527 AM CST Wed Dec 27 2023 - Light snow or drizzle/freezing drizzle will persist across parts of the area mainly this morning. The upper low continues to rotate lobes of vorticity and mesoscale forcing for bouts of light snow across the area. We are not expecting accumulations that would impact travel after sunrise today given air temps will again rise to above freezing mitigating impacts of any falling snow. Additional lobes of vorticity will rotate along the western periphery of the upper low tonight/Thurs which will keep the area in cyclonic flow and will slow any clearing trend until later Thurs/thu night.
High pressure has returned to dominate southern Idaho weather. Snowfall and precipitation in general is not expected, save for this evening along the border with Utah and Nevada, and again at the very end of Fri night when the next trough could start producing precipitation in the western portions of the central Idaho mountains.
221 AM MST Wed Dec 27 2023 The upper low continues to meander across northern Missouri with weak vorticity lobes rotating around it bringing occasional rounds of light snow. High temperatures will be in the low to mid 30s. Not much change in temperatures with the snow pack and highs will be in the low to mid 30s.
645 AM EST Wed Dec 27 2023 Low pressure will track across eastern NC today, then along and offshore the middle Atlantic and southern New England coasts tonight through Thursday.
930 AM EST Wed Dec 27 2023 Low pressure will track across eastern NC today, then along and offshore the middle Atlantic and southern New England coasts tonight through Thursday.
Otherwise, valley locations across Central and Southwest Montana will continue to run below to well below normal, with warmer temperatures expected over the plains of Central and North Central Montana through Thursday. H500 ridge axis will slide east and over the Northern Rockies through the afternoon/early evening hours, which will help to support dry conditions across all of Southwest through North Central Montana today.
311 AM CST Wed Dec 27 2023 - Light snow and a slight chance of freezing rain continue today and tonight across wrn and ncntl Nebraska. The culprit is a backed occluded front which will drift very slowly east today and tonight; acting like a warm front.
We will still be on the warm side of the system (colder air to our south over the Ohio river valley), and even in the highlands of central Michigan temperatures should be just warm enough to avoid freezing drizzle.
515 AM CST Wed Dec 27 2023 (Today through Thursday Night) Cold front to the northwest will sweep across the state today, bringing increased NW winds and cooler temperatures in its wake. H500 and corresponding sfc cyclones will make slow progress to the ESE across central MO today. As these low pressure systems drift toward the TN/OH Valleys in the coming days, occasional chances for precip will be seen across mainly northern Arkansas.
Hernandez Previous Discussion: /Through Thursday/ A slow eastward progression of the Midwestern upper low will keep North and Central Texas under northwesterly flow aloft through the next few days. Much of the region can expect highs in the mid 40s to mid 50s this afternoon, then 2-3 degrees cooler tomorrow afternoon. Breezy northwesterly winds are likely to develop each afternoon making if feel 5-10 degrees cooler than the actual temperature. Temperatures will dip down into the 20s and lower 30s, placing much of North and Central Texas below the freezing mark.
Last evening's H500 hand analysis map showed the upper low had made a slow track eastward to the mid-MO valley near the NE/MO State lines. The low may make it across the state of Missouri over the 24 hours. allowing warmer air to move in aloft on the leading edge of a narrow amplified ridge. Looking at violin plots the bias corrected and MOS guidance looks too optimistic in some of these inversion prone areas and did lean the forecast cooler in several places. The large cut off low over the eastern CONUS is slow to progress east, keeping the Intermountain west under a highly amplified ridge through the end of the work week.
The upper ridging across the region will continue to weakens today ahead of the large closed off upper low over the Midwest.
423 AM MST Wed Dec 27 2023 The upper low continues to meander across northern Missouri with weak vorticity lobes rotating around it bringing occasional rounds of light snow. High temperatures will be in the low to mid 30s. Not much change in temperatures with the snow pack and highs will be in the low to mid 30s.
509 AM CST Wed Dec 27 2023 (Today through Thursday afternoon) A very slow moving upper level low over the midwestern U. Seasonal highs in the 50s to low 60s can be expected both today and tomorrow with lows tonight dropping below freezing for most locations.
The weather will be fairly tranquil today ahead of the next approaching cold front. A potent short wave will round the base of a large upper level trough currently parked over the middle Mississippi River Valley. After this feature rockets through the region, we will see cooler air gradually filter in behind. Daytime temperatures will fall into the mid to upper 60s with overnight lows falling into the lower 60s and even 50s for some locations.
536 AM CST Wed Dec 27 2023 (Today through Thursday) The center of a large upper low will slowly track across Missouri today.
528 AM CST Wed Dec 27 2023 - Light snow and a slight chance of freezing rain continue today and tonight across wrn and ncntl Nebraska. The culprit is a backed occluded front which will drift very slowly east today and tonight; acting like a warm front.
640 AM CST Wed Dec 27 2023 Today and Tonight: A closed low pressure system spinning over northwest Missouri early this morning is dominating much of the flow across the central and eastern CONUS today. As high pressure continues to build on the western side of this low pressure system tonight, cooler conditions will once again settle in along the Gulf Coast. Even with perhaps a little flow overnight, Min Temps are generally expected to range from the upper 20s to lower 30s near freezing.
(This evening through Thursday) The expansive, occluded mid-latitude cyclone continues to cylonically spin across the Midwest as it slowly drifts to the east. A shotwave trough/vorticity lobe will rotate on the western periphery of the upper-level low tomorrow, bringing synoptic-scale ascent across northwest into west central Oklahoma from differential cyclonic vorticity advection (DVCA). Any measurable precipitation will be quite light as the High Resolution Ensemble Forecast (HREF) mean liquid equivalent precipitation is 0. The lowest temperatures are expected across northwest into west central Oklahoma, where the cloud cover will be most abundant.
1130 AM CST Wed Dec 27 2023 (Today through Thursday Night) Cold front to the northwest will sweep across the state today, bringing increased NW winds and cooler temperatures in its wake. H500 and corresponding sfc cyclones will make slow progress to the ESE across central MO today. As these low pressure systems drift toward the TN/OH Valleys in the coming days, occasional chances for precip will be seen across mainly northern Arkansas.
1058 AM CST Wed Dec 27 2023 - Light snow and patchy light freezing drizzle are expected today along and west of Highway 60. Impacts from the snow and freezing drizzle are expected to be minor although some light accumulations are possible along with periods of reduced visibility.
A secondary cold front was analyzed over north central Arkansas southwest back into southeast Oklahoma. Aloft, an expansive and deep upper low continues to churn over the Middle Mississippi Valley at this hour. AC3 Clouds will continue to move back into the region this morning as an upper level low pressure system brings a few showers over northern sections of the Mid-South today into this evening.
1136 AM CST Wed Dec 27 2023 (Today and tonight) We continue to follow the meanderings of an occluded low across the lower Missouri Valley for its sensible impacts on our weather. The low will spin a bit eastward during the day, but not far enough away that we won't see another in a series of daily reinforcing cold shots driven by deeper boundary-layer mixing to our north.
150 PM EST Wed Dec 27 2023 A cold front will slowly move through the area today, with dry air beginning to filter in behind it this afternoon and evening.
1135 AM CST Wed Dec 27 2023 - Light snow or drizzle/freezing drizzle will persist across parts of the area mainly this morning. The upper low continues to rotate lobes of vorticity and mesoscale forcing for bouts of light snow across the area. We are not expecting accumulations that would impact travel after sunrise today given air temps will again rise to above freezing mitigating impacts of any falling snow. Additional lobes of vorticity will rotate along the western periphery of the upper low tonight/Thurs which will keep the area in cyclonic flow and will slow any clearing trend until later Thurs/thu night.
Cooler, drier air will move into the region overnight. Discussion: In the upper levels, a closed low will be parked over MO/IL/IN tonight and tomorrow. At the surface, low pressure is moving up the East Coast and high pressure is over the Great Plains. Lows will be cooler tonight with lows in the 30s. Much cooler with more seasonable temperatures through the end of the period.
1139 AM CST Wed Dec 27 2023 (Today through Thursday) A new reinforcing cold front will be moving through today. The next way will be cooler temps. This should be capable of bringing in freezing temps to the northern most areas of the CWA.
Afternoon temps were mainly in the lower 50s with increasing south winds. A cold front will move in tonight with a band of light showers. It will be much cooler tomorrow with highs in the low to mid 40s.
1013 AM MST Wed Dec 27 2023 The upper low continues to meander across northern Missouri with weak vorticity lobes rotating around it bringing occasional rounds of light snow. High temperatures will be in the low to mid 30s. Not much change in temperatures with the snow pack and highs will be in the low to mid 30s.
Highs today will top off in the low to mid 30s before dropping only into the upper 20s for tonightâs lows.
Winds will continue to veer southwesterly today and this will result in warmer afternoon high temperatures in the lower to middle 60s. This will all be ahead of the next cold front approaching from the northwest which will move across the area late tonight into Thursday morning. Winds will turn northerly overnight in the wake of a cold front.
1116 AM CST Wed Dec 27 2023 (The rest of today ) A low pressure area continues to spin to the north of the forecast area, sending bands of clouds and occasional light precipitation at times.
1245 PM EST Wed Dec 27 2023 Aviation The lower deck of clouds was working it's way southwestward a little quicker than expected. We will still be on the warm side of the system (colder air to our south over the Ohio river valley), and even in the highlands of central Michigan temperatures should be just warm enough to avoid freezing drizzle.