Aikyam-Lab/Synoptic-Bench huggingface dataset:
1043 PM CST Wed Dec 18 2024 (Tonight through Thursday night) At time of writing, a cold front is currently draped over our northern CWA, bringing isolated rain showers along and ahead of the boundary. Behind today's cold front, cold and dry air will settle into the region, bringing seasonably cool conditions. Overnight lows will fall into the 40s across most areas, with slightly warmer temperatures near the coast, where lows will hover around the low 50s. Northerly winds will continue to reinforce the cooler and drier air. Thursday night, lows will dip into the 40s across the Victoria Crossroads and much of the Coastal Plains, while the Brush Country and immediate coast will see lows in the low 50s.
200 AM CST Thu Dec 19 2024 - Well above normal temperatures today despite an early morning cold frontal passage, with highs in the upper 50s to low 60s. Early morning water vapor satellite imagery and RAP upper air analysis reveal a rather muted synoptic pattern is in place over the CONUS, with weak ridging over the western CONUS and weak troughing over the eastern CONUS. At the surface, a ~1007-mb low pressure system is spread out over the northern and central plains ahead of a weak vorticity max. Short range guidance agrees these features will slide east-southeast daytime Thursday, sending a modest cold front through the central plains. Daytime Friday, short range ensembles agree the upper level pattern will amplify as both the western ridge and eastern trough gain strength.
1235 AM EST Thu Dec 19 2024 Intermittent freezing drizzle is possible in the ridges overnight. - Risk for freezing drizzle in the mountains of WV overnight.
350 AM EST Thu Dec 19 2024 Outside a few lingering upslope showers this morning, drier and cooler weather will prevail for much of today into tonight.
A cold front drifts across the area during the day followed by drier air filtering into the area by Thursday night, which should favor continued improving conditions into Friday morning.
1035 PM CST Wed Dec 18 2024 - Cooler and breezy today. - Temperatures at or below freezing late tonight and Thursday morning. (This evening through Thursday) This afternoon, a cold front that move through the region overnight is continuing southward through south Texas. By this evening, a 1032mb high pressure center will move southward and settle in across west central Texas. This combination should result in ideal radiational cooling conditions and cause temperatures to fall to around freezing for most locations. The area of high pressure is expected to move eastward tomorrow with light southwesterly return flow.
(Today) Water vapor imagery indicates the upper trough axis was shifting southeast through east TN into southern MS attached to a strong vorticity center along the LA Gulf Coast. The associated cold front has now cross the I-59 corridor, with brisk north winds settling down at this hour to 5-10kt at most locations. However, most should at least have some sunshine pushing valley temperatures into the lower to middle 50s, with upper 40s atop the Cumberland Plateau areas.
1035 PM CST Wed Dec 18 2024 (Tonight through Thursday night) Key Messages -Breezy and gusty behind the passage of the cold front -Overnight lows in the mid 30s for the Hill Country and southern Edwards Plateau with 40s elsewhere -Dry and cooler for the rest of this afternoon into Thursday night A cold front moved across most of South Central Texas from this morning into early afternoon. The front brought cooler temperatures (50s) across the Hill Country and (60s) the I-35 corridor as the frontal boundary pushed across the local area. Dry and cooler weather conditions are in store for Thursday across South Central Texas.
1019 PM MST Wed Dec 18 2024 - Gusty winds will persist over the higher terrain tonight, however, remain below High Wind Warning criteria. With the departure of an upper trough to our east, we have observed a return to more zonal flow today. However, in its wake, a fast moving upper trough and strong jet have been moving east/southeast across the region. Given the higher likelihood of this occurring, don't anticipate the need for any High Wind headlines at this time. Do think a few gusts up to 50 to 60 mph will be observed over the higher terrain tonight, especially the central mountains and Ramparts.
1127 PM CST Wed Dec 18 2024 - Low pressure tracking from the northern Plains to southern Great Lakes Thursday and Friday will bring breezy weather to central IL, along with scattered snow showers Thursday night and Friday.
124 AM EST Thu Dec 19 2024 - Areas of fog forecast overnight, becoming locally dense with visibility less than one-half mile at times - Poor to marginally hazardous boating conditions gradually improve on Thursday, moderate to high risk of dangerous rip currents continues - Much cooler temperatures are on the horizon for this weekend Current-Tonight.
High pressure remains the dominant feature across the western U. The warmest temperatures will occur from Friday through the weekend when the ridge axis migrates overhead, and then shifts east and we see warm southwesterly flow return. Temperatures will reach about 10 to 15 degrees warmer than normal, but look to remain below any record highs.
- Strong cold front moves through late this afternoon into the evening hours, bringing much colder temperatures and gusty northwesterly winds.
Winds will increase by noon across the state as surface pressures begin rising with and immediately behind the cold frontal passage.
(Today through Friday night) An upper level trough over western North and South Dakota will move eastward into the western Great Lakes states by late this afternoon. A weak cold front is expected to move through the Panhandles today in association with the upper level trough.
The highest snow amounts will be along and north of Interstate 94 where 5 to 8 inches are expected.
439 AM MST Thu Dec 19 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead.
Latest surface analysis has the cold front well to our southeast and early morning satellite imagery/RAP analysis showed the axis of an upper level trough just to our southeast as well. This upper level trough axis will shift east of Mississippi by sunrise Friday.
Temperatures were hovering near the freezing mark over Nrn AR, to the mid 30s to mid 40s across the remainder of the state. Patchy fog and patchy freezing fog is possible near and around daybreak, especially over portions of N-Cntrl AR, with visibilities quickly improving after sunrise. High pressure will start to slide S and E of the state today with S/SW surface winds returning during the afternoon. By Friday night, temperatures should fall into the 20s statewide as high pressure settles in N of AR.
(Today through Friday Night) Northwesterly flow will prevail over the area today and contribute to cooler temperatures for today. Building high pressure at the surface will result in a decrease in cloud cover today. Friday will feature another day of near normal temperatures and mostly sunny skies with high pressure continuing to reign over SE Texas.
Another upper trough passes north of the Southeast late tonight into Friday with a reinforcing front moving south over the forecast area late Friday into Friday night in response. Friday night will see the biggest drop, with freezing temperatures over most of the forecast area north of I-10, mid 30s to near 40 south.
505 AM CST Thu Dec 19 2024 - Warm with another weakening cold front moving through the region today.
Broad ridge remains the dominant force across the West tonight with mostly clear skies aside from some passing high clouds. Little change is expected through Friday with the ridge axis only slowly shifting east.
520 AM CST Thu Dec 19 2024 - Warmer today with highs in the mid 50s to near 60 degrees - A cold front brings breezy winds this evening and overnight with much colder air building in for Friday. A strong push of cold air moves in this evening and overnight behind a cold front with winds becoming gusty from the north. The higher end of guidance suggests gusts may reach advisory levels this afternoon given deep mixing this afternoon and again behind the cold front this evening/overnight. Winds relax through the day Friday, but highs will struggle to reach freezing with the colder airmass in place.
(Today and tonight) A cold morning across the area with temperatures at or below freezing across much of the area, the coldest being Sterling City at 25. However, expect warmer temperatures today with highs in the mid 60s to lower 70s. Another chilly night with lows in the 30s, with low lying areas and river valleys in the lower 30s. A weak cold front will bring slightly cooler temperatures to the area on Friday.
- Temperatures at or below freezing late tonight and Thursday morning. (Today and tonight) A cold morning across the area with temperatures at or below freezing across much of the area, the coldest being Sterling City at 25. However, expect warmer temperatures today with highs in the mid 60s to lower 70s. Another chilly night with lows in the 30s, with low lying areas and river valleys in the lower 30s. A weak cold front will bring slightly cooler temperatures to the area on Friday.
As for the temperatures, the highs today are currently projected to be in the 70s for most of the region, while some parts of the coast could be in the upper 60s. As for tonight, like mentioned before, the clear skies would help with the radiational cooling so that the low temperatures could drop into the 50s. Then, the high temperatures for tomorrow are expected to be in the low 70s for most of the region. Finally, a moderate risk of Rip Currents will continue for today, but should become a low risk by tomorrow as the wave heights decrease along the beaches of the Lower Texas Coast.
330 AM CST Thu Dec 19 2024 - Low pressure tracking from the Dakotas to southern Great Lakes this evening will bring breezy weather to central IL, along with scattered snow showers tonight and tomorrow.
High pressure will build into southwest Wyoming and Utah into the weekend.
521 AM CST Thu Dec 19 2024 Colder weather is on tap for the Mid-South going into this weekend as high pressure builds in.
An unseasonably strong high pressure ridge is now positioned over much of the Western U.
(Today through Friday) First cold front is through with cooler drier air in tow. This front will bring another even colder blast with it to bring our lows into freezing again. We will diddo the highs today and Fri.
510 AM CST Thu Dec 19 2024 - Well above normal temperatures today despite an early morning cold frontal passage, with highs in the upper 50s to low 60s. Early morning water vapor satellite imagery and RAP upper air analysis reveal a rather muted synoptic pattern is in place over the CONUS, with weak ridging over the western CONUS and weak troughing over the eastern CONUS. At the surface, a ~1007-mb low pressure system is spread out over the northern and central plains ahead of a weak vorticity max. Short range guidance agrees these features will slide east-southeast daytime Thursday, sending a modest cold front through the central plains. Daytime Friday, short range ensembles agree the upper level pattern will amplify as both the western ridge and eastern trough gain strength.
Colder weather is on tap for the Mid-South going into this weekend as high pressure builds in.
- Much cooler temperatures remain on the horizon by the weekend. A vigorous mid-level trough will sweep across the FL peninsula today. This will drive the first in a series of surface cold fronts across the area as winds veer NW/N with speeds increasing to 7-12 mph. Overnight lows cooler and well into the 50s to around 60F. Overnight mins for Sat/Sun morning realizing L-M40s across the interior - a bit warmer near the coast, with U40s (NW of I-4) to 50s expected for Mon morning, and 50s/L60s (coast) returning Tue-Thu mornings.
305 AM CST Thu Dec 19 2024 - Warmer today with highs in the mid 50s to near 60 degrees - A cold front brings breezy winds this evening and overnight with much colder air building in for Friday. A strong push of cold air moves in this evening and overnight behind a cold front with winds becoming gusty from the north. The higher end of guidance suggests gusts may reach advisory levels this afternoon given deep mixing this afternoon and again behind the cold front this evening/overnight. Winds relax through the day Friday, but highs will struggle to reach freezing with the colder airmass in place.
Drier air will filter into the region Friday as a backdoor cold front passes through the region during the day.
417 AM CST Thu Dec 19 2024 (Today) Water vapor imagery indicates the upper trough axis was shifting southeast through east TN into southern MS attached to a strong vorticity center along the LA Gulf Coast. The associated cold front has now cross the I-59 corridor, with brisk north winds settling down at this hour to 5-10kt at most locations. However, most should at least have some sunshine pushing valley temperatures into the lower to middle 50s, with upper 40s atop the Cumberland Plateau areas.
This will help drive a cold front southward over the Central Plains tonight.
High pressure over the Midwest region will also move more into the OH Valley/Mid South states this afternoon, thereby helping to scatter cloud cover and allow the influx of slightly cooler air out of the NNW. Highs later today will struggle to surpass the lower 50s/near 50F given the weak CAA regime.
High pressure will begin to build today over the northwestern U. Water vapor satellite imagery this morning indicates most available Pacific moisture is riding the ridge to the north of the Northern Rockies. Morning fog will be the primary impact associated with this period of high pressure.
The marine layer will deepen through the weekend, extending the low clouds and fog farther inland in the nights and mornings. A low pressure system is expected to bring westerly winds and a chance of showers late on Christmas Eve. Over the next few days, high pressure aloft weakens and weak onshore flow gains the upper hand.
551 AM CST Thu Dec 19 2024 (Today through Friday Night) Northwesterly flow will prevail over the area today and contribute to cooler temperatures for today. Building high pressure at the surface will result in a decrease in cloud cover today. Friday will feature another day of near normal temperatures and mostly sunny skies with high pressure continuing to reign over SE Texas.
The High Wind Warning will also include messaging about remnant areas of blowing snow, but so far I see no need to further update the headline.
324 AM MST Thu Dec 19 2024 - Unseasonably warm and dry conditions continue into the weekend with high pressure overhead.
503 AM CST Thu Dec 19 2024 - Low pressure tracking from the Dakotas to southern Great Lakes this evening will bring breezy weather to central IL, along with scattered snow showers tonight and tomorrow.
529 AM CST Thu Dec 19 2024 - Cooler weather is expected for the end of the week and weekend.
- Warmer today and slightly above the seasonal average for most locations. These winds will continue to weaken through the morning hours as the U/L trough propagates further eastward throughout the day. High pressure conditions will strengthen, with the ridge axis over the western states becoming well amplified and slowly advancing towards the region. Highs across the plains will be in the mid to upper 50s, and for the higher terrain, expect temperatures to generally be in the 30s (or 20s for the highest elevations), and 40s for the mountain valleys. Under mostly clear skies and with light winds, radiational cooling will be efficient and some locations within the higher mountain valleys and San Luis Valley will drop to temperatures near the zero mark by early morning tomorrow.
1153 AM CST Thu Dec 19 2024 - Warmer today with highs in the mid 50s to near 60 degrees - A cold front brings breezy winds this evening and overnight with much colder air building in for Friday. A strong push of cold air moves in this evening and overnight behind a cold front with winds becoming gusty from the north. The higher end of guidance suggests gusts may reach advisory levels this afternoon given deep mixing this afternoon and again behind the cold front this evening/overnight. Winds relax through the day Friday, but highs will struggle to reach freezing with the colder airmass in place.
Weak ridging will remain in place through Friday, which will result in low impact weather. Winds will remain light as the ridge axis shifts east and removes and influence of a pressure gradient for winds to develop down the Colorado River Valley like we had seen the past few days. The high breaks down and becomes more zonal over the weekend due to an incoming trough.
UL ridging will dominate our weather throughout much of the period, and really you could argue the entire period.
Shallow surface inversions mixed out over the higher terrain already, with the temperature at Flagstaff jumping from 30F to 46F in less than one hour. High pressure remains the dominant feature across the western U. The warmest temperatures will occur from Friday through the weekend when the ridge axis migrates overhead, and then shifts east and we see warm southwesterly flow return. Temperatures will reach about 10 to 15 degrees warmer than normal, but look to remain below any record highs.
- Much cooler temperatures remain on the horizon by the weekend. A weak cold front continues to push through the local area today, leading to light northerly winds.
The story of this Thursday before Christmas continues to be the low ceilings and the patchy to dense fog across the Lower and Middle Keys, as well as the adjacent nearshore coastal waters. Over the southeastern Gulf of Mexico and the coastal waters adjacent to the Lower and Middle Keys, more widespread fog continues, with Dense Fog Advisories correspondingly now extended through the early overnight hours. A stronger cold front will push through the Keys Friday afternoon and evening.
(This evening through Friday Night) High pressure will settle across the region this afternoon into the evening and overnight period. Overnight lows will generally range from the mid 30s to right around 40 degrees, with a few isolated readings in the lower 30s. On Friday, a cold front will rapidly sweep through the region, with some models having the boundary completely through around lunch time. Behind the front, northerly winds will bring in a reinforcing shot of a cooler and drier airmass.
1117 AM CST Thu Dec 19 2024 - Well above normal temperatures today despite an early morning cold frontal passage, with highs in the upper 50s to low 60s. Early morning water vapor satellite imagery and RAP upper air analysis reveal a rather muted synoptic pattern is in place over the CONUS, with weak ridging over the western CONUS and weak troughing over the eastern CONUS. At the surface, a ~1007-mb low pressure system is spread out over the northern and central plains ahead of a weak vorticity max. Short range guidance agrees these features will slide east-southeast daytime Thursday, sending a modest cold front through the central plains. Daytime Friday, short range ensembles agree the upper level pattern will amplify as both the western ridge and eastern trough gain strength.
As high pressure builds in, the wind flow will return from the southwest tomorrow afternoon.
1147 AM CST Thu Dec 19 2024 Updated at 1146 AM CST Thu Dec 19 2024 - Strong cold front late week will bring below normal temps for Friday into the weekend with dry weather persisting. Patchy low clouds and fog continues this morning in the lower Arkansas River Valley and the valleys of northwest Arkansas.
(Today through Friday) Key Message: - A dry "backdoor" cold front arrives Friday night. Elsewhere, temperatures will settle into the low- to-mid 50s. However, a reinforcing push of drier air will arrive Friday night as a dry "backdoor" cold front moves into the region. In the wake of this front, overnight lows will become notably cooler.
In between the two is a lack of moisture in the midlevels, leading to a lack of ice introduction, resulting in areas of freezing drizzle this afternoon across the north. Further south, a few sprinkles can't be ruled out this afternoon with temperatures in the 40s eliminating the chance for freezing for today.
1228 PM CST Thu Dec 19 2024 - Cooler weather is expected for the end of the week and weekend.
Thereafter, model guidance has us in between an approaching reinforcing cold front, so the local pressure gradient is just tight enough to allow for 3-5kt winds and prevent ideal radiational cooling. For the minT forecast trended it a little warmer than the MOS. The reinforcing cold front will move through the region during the day on Friday. Breezy northwest winds are expected and the cool advection will keep temperatures in check, generally in the lower 60s under sunny skies.
(Tonight) An upper level trough axis across the upper Midwest dips south and east towards the local forecast area tonight. This will push a dry cold front through this evening bringing a reinforcement of cold air into the Tennessee Valley. Otherwise, mostly clear skies and light winds tonight make for ideal radiational cooling, dropping overnight lows into the low to mid 30s.
230 PM CST Thu Dec 19 2024 This Afternoon Through Tomorrow: As low-level moisture continues to slowly erode in the wake of our last system, a low pressure system brewing in the Upper Midwest is set to bring us our next cold front.
1143 AM CST Thu Dec 19 2024 (Today through Friday Night) Northwesterly flow will prevail over the area today and contribute to cooler temperatures for today. Building high pressure at the surface will result in a decrease in cloud cover today. Friday will feature another day of near normal temperatures and mostly sunny skies with high pressure continuing to reign over SE Texas.
1120 AM CST Thu Dec 19 2024 - Warm with another weakening cold front moving through the region today.
- Another cold front is set to arrive late tonight into Friday morning keeping seasonably cooler temperatures across the region.
(Tonight through Friday night) Key Message: - A dry "backdoor" cold front arrives Friday night. Elsewhere, temperatures will settle into the low- to-mid 50s. However, a reinforcing push of drier air will arrive Friday night as a dry "backdoor" cold front moves into the region. In the wake of this front, overnight lows will become notably cooler.
(Rest of today through Friday) Mid level troughing over the Gulf of Mexico will slide eastward across the Florida Peninsula as today progresses, sending a frontal boundary through South Florida. High temperatures this afternoon will generally rise into the lower 80s across most areas, with lows tonight in the 60s. This will reinforce the northwest winds aloft, and usher in an even drier and cooler air mass, with PWAT values plummeting throughout the day and leading to near zero rain chances. While high temps will rise into the upper 70s to around 80, cold air advection will really start to take place Friday night as lows drop into the mid 40s west of Lake Okeechobee to the lower 50s across the rest of the interior as well as Southwest Florida.
1107 AM CST Thu Dec 19 2024 - Low pressure tracking from the Dakotas to southern Great Lakes this evening will bring breezy weather to central IL, along with scattered snow showers tonight and tomorrow.
1236 PM MST Thu Dec 19 2024 Unseasonably warm temperatures will continue through this weekend as high pressure continues to dominate the western United States. High pressure continues to encompass much of the western CONUS, promoting anomalously warm temperatures for this time of year with some areas reaching, and even exceeding, record highs. The high yesterday at Phoenix Sky Harbor was 83 degrees, which is 18 degrees above normal for this time of year and also broke the previous daily record of 79 degrees set back in 1950.