Aikyam-Lab/Synoptic-Bench huggingface dataset:
1247 PM EST Tue Dec 19 2023 High pressure will build across the region for mid-week. Winds will also continue to decrease as high pressure to the west builds in over the region today. Highs this afternoon will remain cold in the west, struggling to reach 32 in the higher elevations. Tonight as high pressure builds overhead, and calm winds with clear skies, will have optimal conditions for a radiational cooling night with lows in the teens and 20s. High pressure remains overhead Wednesday and clear skies and light winds will result. Should see highs 8 to 15 degrees warmer tomorrow, reaching the low to mid 40s.
Partly to mostly sunny and trending milder tomorrow with fcst highs in the upper 30s to mid 40s or slightly warmer than average for this time of year.
1223 PM EST Tue Dec 19 2023 A sharp upper trough will slide east and lift away later today, with zonal flow likely the rest of the week.
Temperatures will be cool today with highs only a degree or two above freezing. A deep anomalous upper level trof over the east Pacific was helping to support a large positive 500 mb height anomaly over eastern North America.
337 PM EST Tue Dec 19 2023 High pressure building into our area will allow for dry conditions that will last through the rest of the week. For Wednesday, it'll be a quiet weather day with mostly clear skies, temperatures in the high-30s/low-40s, and calmer winds. High Pressure centered near James Bay with a ridge axis extending south across the Appalachians will lead to a period of quiet weather mid-week.
Temperatures this afternoon are mainly in the lower to mid 60s. Moisture levels will continue to be on the increase overnight resulting in warmer overnight lows- generally in the mid to upper 40s.
1205 PM CST Tue Dec 19 2023 (Today through Wednesday Night) High pressure will control the weather pattern through the short term promoting calm and dry conditions.
Model soundings also appear to support freezing rain in spots early tomorrow morning, with warm air overrunning the colder surface. Weak upper ridge begins to nose into the region late in the day Wednesday, pushing precipitation up and out of the Island Park region late in the day.
1247 PM EST Tue Dec 19 2023 Cold high pressure will build into the region today and persist through mid week. At the surface, ~1030 mb high pressure will gradually build east from the TN Valley today. Winds will gradually decrease this afternoon as the high continues building east and the pressure gradient relaxes, but apparent temperatures will still only reach the mid-to-upper-30s. Actual high temperatures will be in the lower- to-mid-40s, which is around 10 degrees below normal. Cold 1030 mb high pressure will remain anchored over central NC through the day/night, resulting in clear/calm winds most of the period. The low-level airmass will warm but after a cold start with teens and 20s, highs will still be below average in the upper 40s to around 50 degrees.
1150 AM CST Tue Dec 19 2023 (Today through Wednesday) Surface ridging shifts east today and will turn our winds from northerly this morning to east and eventually southeast by this afternoon.
217 PM EST Tue Dec 19 2023 High pressure will build across the region for mid-week. Winds will also continue to decrease as high pressure to the west builds in over the region today. Highs this afternoon will remain cold in the west, struggling to reach 32 in the higher elevations. Tonight as high pressure builds overhead, and calm winds with clear skies, will have optimal conditions for a radiational cooling night with lows in the teens and 20s. High pressure remains overhead Wednesday and clear skies and light winds will result. Should see highs 8 to 15 degrees warmer tomorrow, reaching the low to mid 40s.
/13 (Now through Wednesday) A large upper trof oriented over the easternmost states moves off into the western Atlantic as a subtle upper ridge builds into the forecast region. Highs today will be mostly in the lower to mid 50s, then highs on Wednesday tend to be in the mid 50s except for some locations reaching the upper 50s near the coast.
1046 AM CST Tue Dec 19 2023 (Rest of Today) The upper trough responsible for the breezy conditions yesterday will continue to shift east off the Atlantic Coast today, while broad upper ridging builds in from the west. Closer to the sfc, high pressure will shift southeast and center near the Tennessee Valley, reinforcing a cooler and dry airmass. With much lighter northerly winds today, the main impact will come from dewpoints in the low to mid teens.
1019 AM EST Tue Dec 19 2023 A sharp upper trough will slide east and lift away later today, with zonal flow likely the rest of the week.
1216 PM EST Tue Dec 19 2023 A weak cold front moves through this afternoon. High pressure then builds in through the middle of the week and will remain in control through the upcoming weekend. The mid and upper level trough axis pushes through later in the day. NW wind will continue with a pressure gradient in place between the departing low well to the north, and high pressure to the southwest.
1120 AM CST Tue Dec 19 2023 (Today through Wednesday afternoon) A rather benign forecast for the short term, as ridging translates eastward over the region today, accompanied by increasing mid- and upper level cloud cover. At the surface, flow has already veered to the south and southeast across much of the region, yielding a quick return to above normal temperatures this afternoon as highs top out in the lower to middle 60s for most, with lower 70s for portions of the Pecos and Rio Grande Valleys. The aforementioned ridge continues its eastward progression through tonight, with flow aloft transitioning to southwesterly ahead of a deepening trough off the Pacific Coast.
902 AM MST Tue Dec 19 2023 Received a report of Freezing Rain at the Flowing Wells Rest Area (located about 37 miles east of Jordan). It could be in the form of Freezing Rain, Snow or Rain. Until then, a strong ridge of warm high pressure will remain in control over the western and central states as an upper low drops south off the west coast.
This afternoon: High pressure continues to build into the region with a very dry air mass in place as dewpoints in the teens are common with PWAT values less than a quarter inch. Low temperatures this morning dropped into the mid 20s (24 McCormick, 25 Saluda) in the cold advection alone and think overnight lows tonight with strong radiational cooling should be in the lower 20s and upper teens in sheltered locations. Expect lows in the lower 20s and upper teens.
1240 PM EST Tue Dec 19 2023 Cool high pressure builds in behind a departing cold departing front. High pressure then remains in control through the remainder of the week. A persistent nwrly breeze will keep temps above freezing for the barrier isls. Conditions will eventually moderate by late week with strong high pressure remaining over the region.
225 PM EST Tue Dec 19 2023 Dry high pressure lingers over our region into the weekend.
Weak upper level ridging remains over the central CONUS this afternoon with mainly westerly flow over the Panhandles. Temperatures will be comparable to today, with highs in the low 60s to low 70s.
325 PM EST Tue Dec 19 2023 High pressure will build across our area tonight and then prevail the rest of this week. Tonight: High pressure will be centered along the southern and central Appalachians, and conditions will support a clear and cold night. We have trended low temperatures just a bit cooler, with mid to upper 20s away from the coast and low to mid 30s as you get closer to the beaches. The mid-levels Wednesday morning will consist of a trough moving off the coast of the Northeast U. , while broad ridging will be over much of the U.
1025 AM EST Tue Dec 19 2023 Cool high pressure builds in behind a departing cold departing front. High pressure then remains in control through the remainder of the week. A persistent nwrly breeze will keep temps above freezing for the barrier isls. Conditions will eventually moderate by late week with strong high pressure remaining over the region.
Temperatures bottomed out in the upper 50s across the Middle and Upper Keys, and the lower 60s over most of the Lower Keys. As this high approaches, moderate to fresh breezes from the north to northeast will veer towards the northeast tonight. Breezes will peak Wednesday and Wednesday night, as the high remains planted along the Eastern Seaboard.
A tightening pressure gradient located across the forecast area, due to a low pressure area along the lee side of the Rockies, will create breezy and gusty south winds for the afternoon hours today and potentially on Wed. Both models agree that the precipitation will be all rain for Thu thru Fri, as the warm advection will keep temperatures above freezing throughout the quick hitting event. Lee troughing continues to strengthen over western KS/eastern CO which will bring gusty south winds to most of the region. The higher end of this range will be for areas along and east of I-135 and will quickly decrease as sunset approaches.
With that, another bitterly cold night is in store with widespread temps in the low to mid 20s. A shift in the upper air pattern will occur tomorrow as ridging aloft builds over the Ohio River Valley.
RW (Today through Wednesday) Strong low pressure has moved well out of the area. Currently, a trailing cold front is moving through the CWA. This front will push south today with high pressure remaining in place through the end of the short term period. Overnight temps are running a little warmer than forecast, due to the elevated winds.
255 PM EST Tue Dec 19 2023 High pressure will continue to build into the area overnight with temps dropping into the mid to upper 30s north, upper 30s to upper 40s central and upper 40s to lower 50s south. Isolated cooler locations across mainly Levy county may see freezing temps, but not expecting any widespread freezing conditions.
Shallow inversions will open up the potential for pockets of light freezing rain and wintry mix in the valleys, particularly across northwest Montana.
pdf Weak upper level ridge will continue to build from west to east into the region today through Wednesday. At the surface, ridge over the Mid South will move over Appalachia Region tonight with axis extending into the Florida peninsula.
Pattern Synopsis/Forecast: Potent troughing currently situated over Hudson Bay and southeastward down the Atlantic coast. Mid-level ridging taking hold across the majority of the nation's midsection with northern MI influenced by ~1030mb high pressure passing by to our south.
1136 AM CST Tue Dec 19 2023 The forecast remains on track this morning with high pressure in control, resulting in clear and cool conditions. These high clouds could result in slightly warmer temperatures tonight as the area may not be allowed to radiate efficiently. Mostly sunny skies will allow temperatures to rebound into the low/mid 50s today, but there is some uncertainty with tonight's lows as cirrus is expected to thicken up in the fast upper level westerlies laden with Pacific moisture, and this could keep lows above freezing.
1100 AM EST Tue Dec 19 2023 Cold high pressure will build into the region today and persist through mid week. At the surface, ~1030 mb high pressure will gradually build east from the TN Valley today. Winds will gradually decrease this afternoon as the high continues building east and the pressure gradient relaxes, but apparent temperatures will still only reach the mid-to-upper-30s. Actual high temperatures will be in the lower- to-mid-40s, which is around 10 degrees below normal. Lows in the lower to mid 20s.
1128 AM CST Tue Dec 19 2023 (Today and tonight) Dirty ridging aloft is on pace to exit the region this afternoon ahead of a minor impulse in southwest flow tonight. An abundance of high clouds already in place will remain intact tonight all the while lee troughing sharpens to our northwest and results in breezy downslope winds.
1012 AM CST Tue Dec 19 2023 Chilly and clear conditions are in place across the Mid-South this morning in the wake of strong high pressure at the surface and northwest flow aloft. Aside from a few high clouds moving in along an upper ridge, expect mostly sunny skies today with cool temperatures in the upper 40s. CAD Dry and cold weather is expected across the Mid-South today as high pressure moves across west Tennessee.
1242 PM EST Tue Dec 19 2023 Cold high pressure will build into the region today and persist through mid week. At the surface, ~1030 mb high pressure will gradually build east from the TN Valley today. Winds will gradually decrease this afternoon as the high continues building east and the pressure gradient relaxes, but apparent temperatures will still only reach the mid-to-upper-30s. Actual high temperatures will be in the lower- to-mid-40s, which is around 10 degrees below normal. Lows in the lower to mid 20s.
The clearing trend will continue this evening, as inversion heights fall and high pressure ridge builds in. Further east, a more persistent breeze should hold readings closer to NBM min temps in the low to mid 20s.
531 PM CST Tue Dec 19 2023 (This afternoon through Wednesday night) Longwave troughing continues over the western CONUS with mid- level ridging across the central CONUS. Ahead of this developing trough is southwesterly flow aloft with lee troughing and southerly/southeasterly winds at the surface.
(Now through Wednesday) An upper level ridge will continue to build over the area through Wednesday.
528 PM CST Tue Dec 19 2023 Cool and dry conditions will prevail for the next several days as high pressure dominates. By the end of the week, a slow moving cold front will approach, marking the start of a wet and unsettled holiday weekend. Expect rain showers on and off daily through at least next Tuesday due to a series of stalled frontal boundaries and an upper low pressure system.
(This afternoon through Wednesday) High pressure will dominate the short term and bring continued dry conditions. With clear skies and near calm winds, another cold night is ahead tonight with subfreezing lows areawide. A gradual warming trend will begin on Wednesday as upper ridging starts to build eastward. Still, highs will remain a bit below normal but should nudge the lower 50s for most. While not quite as cold as tonight, subfreezing temperatures are again forecast areawide for Wednesday night lows.
(This afternoon through Wednesday night) Longwave troughing continues over the western CONUS with mid- level ridging across the central CONUS. Ahead of this developing trough is southwesterly flow aloft with lee troughing and southerly/southeasterly winds at the surface.
620 PM EST Tue Dec 19 2023 Cold high pressure will build into the region today and persist through mid week. At the surface, ~1030 mb high pressure will build east from the TN Valley into the Appalachians tonight. NW winds have relaxed with the high shifting closer to the area, but a few locations are still gusting to 15-20 mph. This is resulting in a chilly afternoon as air temperatures are only in the lower-to-mid- 40s. Cold 1030 mb high pressure will remain anchored over central NC through the day/night, resulting in clear/calm winds most of the period. The low-level airmass will warm but after a cold start with teens and 20s, highs will still be below average in the upper 40s to around 50 degrees. Weak upper level ridge over the Mid-Atlantic region will influence fair weather late week.
900 PM EST Tue Dec 19 2023 Cold high pressure will build into the region tonight and persist through late week. Clear skies with cold high pressure dominated the region this evening. The highest pressure was over the mountains and the winds have decoupled already there. Cold 1030 mb high pressure will remain anchored over central NC through the day/night, resulting in clear/calm winds most of the period. The low-level airmass will warm but after a cold start with teens and 20s, highs will still be below average in the upper 40s to around 50 degrees. Weak upper level ridge over the Mid-Atlantic region will influence fair weather late week.
635 PM EST Tue Dec 19 2023 Cool high pressure builds in behind a departing cold departing front. High pressure then remains in control through the remainder of the week. A cool, dry, and sunny day today in the wake of the cold front which passed through overnight. CAA has abated and the high pressure is building in from the west. Current forecast calls for lows in the low to mid 20s across much of mainland ENC, with high 30s along the OBX. Dry, cool, and quiet weather will continue Wednesday, with highs in the mid to upper 40s, similar to today but a few degrees warmer in spots. Conditions will eventually moderate by late week with strong high pressure remaining over the region.
===================================================================== Key Messages: - Chilly tonight but not as cold as last night - Low humidity levels tomorrow afternoon ===================================================================== High pressure centered over the central Appalachians will remain nearly stationary through tomorrow, keeping low and mid levels dry beneath high clouds streaming overhead. With the center of the high just off to our east, we'll have a slight southerly breeze tonight. The forecast calls for lows in the lower and middle 20s in most areas, and a bit colder in the usual valley cold spots. The south breeze will continue tomorrow behind the Appalachian high, and will bring warmer temperatures into the region with afternoon highs around 50. Though mixing heights will be low, very dry air in the low levels will lead to minimum afternoon relative humidity values around 25-30%.
Low level moisture flux convergence along with the passage of a weak short wave trough at 70H over the coastal plains should provide enough lift for shower development, with several hi-res models improving confidence.
836 PM EST Tue Dec 19 2023 High pressure will build into the area this evening and remain in control through the end of the week.
624 PM EST Tue Dec 19 2023 High pressure will build across our area tonight and then prevail the rest of this week. Tonight: High pressure will be centered along the southern and central Appalachians, and conditions will support a clear and cold night. We have trended low temperatures just a bit cooler, with mid to upper 20s away from the coast and low to mid 30s as you get closer to the beaches. The mid-levels Wednesday morning will consist of a trough moving off the coast of the Northeast U. , while broad ridging will be over much of the U.
608 PM EST Tue Dec 19 2023 Below normal temperatures under dry high pressure will prevail across the area through the midweek period.
552 PM CST Tue Dec 19 2023 (This afternoon through Wednesday) High pressure will continue to move into the state through Wednesday. Winds should be a lot weaker with the pressure gradient off to the east, so wind chill values in the morning will be a few degrees cooler in the upper teens to mid 20s. As the high shifts east, flow will transition to the east by early Wednesday morning, and then east southeast by Wednesday afternoon. Otherwise, the southeasterly flow will bring slightly warmer air with high temps in the low to mid 50s on Wednesday.
529 PM CST Tue Dec 19 2023 - Breezy and warmer Wednesday - Wet for the end of the week and into the weekend Ridging will continue into Wednesday as the next weather system approaches the CWA. Southeast Kansas is likely to have the highest winds during the afternoon.
Southerly winds at the surface will help temperatures trend warmer into the weekend when we should see high temperatures back in the 60s.
809 PM EST Tue Dec 19 2023 High pressure will build across the region for mid-week. Key Message: Winds are calming in earnest tonight as high pressure moves overhead and the pressure gradient is all but eliminated. Tonight as high pressure builds overhead, and calm winds with clear skies, will have optimal conditions for a radiational cooling night with lows in the teens and 20s. High pressure remains overhead Wednesday and clear skies and light winds will result. Should see highs 8 to 15 degrees warmer tomorrow, reaching the low to mid 40s.
928 PM EST Tue Dec 19 2023 Below normal temperatures under dry high pressure will prevail across the area through the midweek period.
A sprawling ridge of high pressure extending from Quebec to the Gulf Coast is providing central Illinois with southerly flow this evening. which has also helped keep temperatures several degrees warmer than they were 24 hours ago. 02z/8pm readings are in the lower 30s. Today the highs are around the mid 30s which is normal for this time of year.
328 PM MST Tue Dec 19 2023 - Mostly quiet weather through this week, with dirty ridging and some light mountain snow showers. Dirty ridging will keep conditions warm and dry for most of the CWA.
554 PM CST Tue Dec 19 2023 (Tonight) High pressure will remain centered near the area, keeping cooler northeasterly flow in place. This will help keep temperatures a few degrees warmer than we saw last night, but still chilly as low drop into the mid to upper 20s.
Latest ACARS sounding out of CAE shows limited wind in the boundary layer which should decrease further as the high shifts closer to the area. Radiational cooling has already been strong since sunset with temperatures near freezing as of 7pm this evening. As a result, low temperature forecast remains on track with lows likely in the low 20s to upper teens in sheltered locations.
(Tonight) High pressure has been slowly building southeastward tonight. These good radiational cooling conditions are expected to continue into portions of the overnight hours and should allow temperatures to continue to fall into the lower to mid 20s in many locations. This should help to keep lows from dropping into the teens and patchy freezing fog from developing.
635 PM EST Tue Dec 19 2023 High pressure building into our area will allow for dry conditions that will last through the rest of the week. For Wednesday, it'll be a quiet weather day with mostly clear skies, temperatures in the high-30s/low-40s, and calmer winds.
Cool and dry conditions will prevail for the next several days as high pressure dominates. By the end of the week, a slow moving cold front will approach, marking the start of a wet and unsettled holiday weekend. Expect rain showers on and off daily through at least next Tuesday due to a series of stalled frontal boundaries and an upper low pressure system.
High pressure will continue to build into the area overnight with temps dropping into the mid to upper 30s north, upper 30s to upper 40s central and upper 40s to lower 50s south. Isolated cooler locations across mainly Levy county may see freezing temps, but not expecting any widespread freezing conditions.
A low-level anticyclone continues to track eastward from the Wabash into the Ohio Valley today backing layer winds west-southwesterly in the wake of a departing longwave trough. This noses a warm front into Lower Michigan marked by 850 mb temps climbing some 12-14C over a 24 hour time-span. The LLJ washes out Wednesday morning as a shorter wavelength ridge axis moves across the Canadian Prairies. More nuanced adjustments get underway Wednesday night as a backdoor cold FROPA spills southward thanks to aforementioned high pressure building aggressively into Quebec.
A weak upper ridge will bring dry weather on Wednesday along with temperatures 5-10 degrees above normal.
ridging southwest across the Southern Gulf States.
333 AM EST Wed Dec 20 2023 High pressure will prevail through the rest of the week. Overnight analysis reveals a somewhat blocky pattern across NOAM with a southern stream cut-off low over the CA coast and downstream ridging through the central and eastern CONUS. high temperatures today will range from the lower to middle 50s. Lows tonight may run just a touch warmer than early this morning, but still in the upper 20s to lower 30s away from the coast. A large area of high pressure will settle over the eastern CONUS and become the dominant pattern through the short-term period. Aloft, the axis of a low amplitude ridge will slide across the eastern U.