Aikyam-Lab/Synoptic-Bench huggingface dataset:
508 AM CST Mon Jan 29 2024 (Today and tonight) An unseasonably warm late January day will take place today as an upper level ridge axis slowly progresses eastward across the Intermountain West. A sharp but weak upper level short wave trough will drop southward through the Central Plains today. We will see weak surface lee troughing in eastern New Mexico leading to weak downsloping southwesterly surface winds in West Texas.
536 AM CST Mon Jan 29 2024 (Today and tonight) Expect continued benign and dry weather through tonight, with weak upper-level ridging and zonal (west to east) flow aloft set up over West Central Texas today.
(Today through Tuesday) High pressure is building into the area. This is forcing the trough that has been in the northeast to slide east of the area by the morning.
Little overall change to forecast data and messaging as isolated to scattered light snow (with a mix of drizzle and potentially even freezing drizzle) continuing across the region. Monitoring of area road temperatures and other observations has maintained prior thinking of minimal impacts if freezing rain/drizzle occurs as well. The only concern is the possibility for some very isolated slick spots due to freezing drizzle north of PGH where roadways surface temperatures are hovering just below freezing. Cloud top temperatures have been observed between -5 and -10C overnight, so any light precipitation out of the relatively warmer patches would not be cold enough for ice nuclei and result in rain rather than snow.
Some light additional snow accumulations still possible over the higher terrain. We start the period under the west side of an upper trough with its axis near the East Coast and northwest flow over our region.
Winds will be lightest along the I-10 corridor tonight, and lowered lows in that areas into the lower to mid 30s, closer to cooler GFS MOS guidance.
Northwest flow aloft will bring through trough/weakish front tonight and keep winds up just a touch into early evening in northern sections of the forecast area. There is cold advection which will linger into tomorrow for eastern areas and that will keep that region cooler than the western areas, though still above normal. Bottom line though is Tuesday is another melting day for snow with highs ranging from the lower 40s near York to near 60 at Cambridge and Plainville.
1124 AM CST Mon Jan 29 2024 (Today and tonight) Expect continued benign and dry weather through tonight, with weak upper-level ridging and zonal (west to east) flow aloft set up over West Central Texas today.
(Tonight through Tuesday night) Other than some streaming high clouds to filter the sun, the next 36 hours will be warmer than normal with south and southwest surface winds in the daytime hours through Tuesday. High pressure ridging over TX will help maintain warm afternoon temps about 5 to 7 degrees above late January normals. A weak backdoor ridge settles over parts of Central to NE TX late Tuesday, but model trend seem to favor the upper ridge having more influence on the surface winds and temperatures.
1131 AM CST Mon Jan 29 2024 (Tonight through Tuesday night) High pressure remains over the forecast area today, tonight, and Tuesday. With the 500 mb ridge just upstream of south Texas, the next few days are expected to remain rain free. There will be some moisture that moves into the forecast area tonight into Tuesday from the 500 mb trough over the Pacific just off Baja California, which will affect our weather as we get into the weekend.
Current Conditions and Synoptic Pattern: An area of high pressure is currently overspreading the Ozarks, bringing clear skies and light winds.
Surface ridging briefly builds this afternoon into this evening shifting northwesterly back to the west with gradients slackening. Subsidence over the region overnight will likely lock in the low level stratocumulus field, although a few breaks may be possible, especially across the south. Will keep fog out of the forecast for now with a generally low confidence of breaking out of the low level cloud cover in a substantial fashion. As transient ridging ahead of the next system moves overhead during the day Tuesday, should finally see some decent breaks in the low level cloud cover, only to be replaced by increasing mid-level cloudiness heading into the afternoon. The next northern stream disturbance arrives on our doorstep Tuesday afternoon spreading light rain eastward across the lower elevations heading into Tuesday evening as light snow commences in the mountains.
It will get cold tonight with lows near or just below freezing. Some freezing river fog is possible early tomorrow morning. The ridge axis will shift east of the area tomorrow and strong warm air advection will result in quite the warmup during the day.
228 PM EST Mon Jan 29 2024 Lake effect snow showers will dissipate by the early evening as high pressure moves into the region.
Cold, dry air continues to push into the area following yesterday's cold front. The winds will also begin to diminish tonight as high pressure settles in.
237 PM CST Mon Jan 29 2024 - Small light rain/snow chances (15-25%) along a Canadian cold front tonight and associated with the cyclonic flow aloft in the wake of this front on Tuesday morning. - There may be some redevelopment of dense fog across parts of southwest Wisconsin and northeast Iowa this evening, and then the visibilities should improve in the wake of the Pacific cold front between 30. During this evening, a Pacific cold front will move southeast across the Upper Mississippi River Valley. Unlike the past several days, the visibilities should improve in the wake of the Canadian cold front between 30. 5C on Tuesday afternoon and mainly cloudy skies, high temperatures will be cooler (ranging from mid-30s to lower 40s).
239 PM EST Mon Jan 29 2024 Lake effect snow showers will dissipate by the early evening as high pressure moves into the region.
353 PM EST Mon Jan 29 2024 High pressure and dry weather will dominate across the region through Tuesday.
Fog and stratus are the main concerns the next severals days as high pressure ridging brings stable conditions to the Northern Rockies.
A chilly start to the work week is underway with temperatures generally in the low to mid 50s this morning. Much cooler/drier behind latest strong cold front.
1135 AM CST Mon Jan 29 2024 (Today through Tuesday night) Dry and relatively quite weather is expected to hold over the Panhandles as latest model agreement continues to see a ridge build in alongside dry northwesterly flow for today and Tuesday. Meanwhile, overnight lows will still remind us its January with temperature in the low 30s for tonight.
Tonight: As the trough digs off the east coast overnight, synoptic & sfc pattern will consist of mean northwesterly dry flow ahead of a deepening cold core & frontal system digging southward into the Great Lakes overnight. With some crossover temps in the 3-5 degree range or so, especially along & east of the I-55 corridor, patchy dense fog is psbl & localized freezing fog can't be ruled out. Leaned towards cooler NAM MOS, which seemed to verify well this morning, with areas of freezing temps east of I-55. Tuesday: After the fog lifts by mid-morning, trough is expected to dig southward across the Mid MS Valley to Mid South region, bringing some increase in clouds.
Temperatures will cool through the evening hours which will lead to some freezing drizzle potential and some potentially slick roadways. Ridging builds in across the region and we continue warm air advection through the forecast period. Models continue to have a very tough time with this stagnant airmass and have kept conditions on the lower side of guidance.
131 PM MST Mon Jan 29 2024 With an upper ridge over Montana, the dry and mild conditions will continue through the workweek. DISCUSSION: Areas of patchy freezing fog will be possible along the Milk and Missouri River Valleys again tonight.
Lows tonight per ridging influences surface and aloft still maintaining some hold on the areas weather should dip below freezing, coldest temperatures Cumberland Plateau Region in mid 20s.
(This afternoon through Tuesday night) Quiet and pleasant weather is on tap to close out the month of January across West Texas and Southeast New Mexico supplied by upper level ridging.
918 AM CST Mon Jan 29 2024 (Today through Tuesday night) Dry and relatively quite weather is expected to hold over the Panhandles as latest model agreement continues to see a ridge build in alongside dry northwesterly flow for today and Tuesday. Meanwhile, overnight lows will still remind us its January with temperature in the low 30s for tonight.
(Tonight) Dense low level stratus has since cleared out this afternoon as drier air moves into the region with high pressure situated just to our west. Current afternoon temperatures range from the lower to upper 40s and will gradually drop this evening after sunset. Otherwise, overnight lows will be in the lower 30s/upper 20s with light winds becoming southerly.
Highs today will range from the lower to mid 60s. As for the lows for both tonight and tomorrow. temperatures are going to be in the lower to mid 40s.
- Cold front moves through the region tonight, yielding cooler temperatures for tomorrow.
In FL the temps might a bit tricker as the low to upper 30s are forecast for the FL Panhandle and the mid to upper 30s are forecast for the Bend. If winds ease or go still, temperatures may be able to fall a few degrees cooler than forecast. Come Tuesday, high pressure is out of the region. Highs for Tuesday will be in the low 60s for much of the region, with perhaps some areas in the Big Bend getting close to 65.
1146 AM CST Mon Jan 29 2024 (Today through Tuesday) Mid-level ridging will move over South Central Texas on Monday, resulting in picture perfect weather with filtered sunshine and high temperatures around 3-7 degrees above normal in the upper 60s to lower 70s.
Temperatures will continue to be slightly above normal thanks to weak ridging aloft, diverting any significant weather out of our region. Patchy fog will be possible across northeastern North Texas, where slightly cooler temperatures will reduce dew point depressions to near 0 deg. /NEW/ /Tuesday Night Onward/ A weak cold front will make its way across the region Tuesday night, ultimately resulting in a northerly wind shift.
High pressure moves overhead and just east of the Divide in the next 36 hours. While there will likely be isolated pockets of dense and/or freezing fog, we did include the general idea of patchy dense fog tonight for a good chunk of our valley locations.
(This evening through Tuesday) Thin cirrus continued to overspread the region this afternoon downstream of upper ridging to our west. Favored a blend of cooler guidance tonight in our NW zones where light winds look on par for another round of efficient radiational cooling. Otherwise, cirrus should dissipate tomorrow under the sprawling ridge.
A Dense Fog Advisory is in effect for the Lower Treasure Valley this morning. Otherwise, an unusually strong high pressure ridge over the region today will provide dry conditions and near-record high temperatures at several locations, including Boise (forecast and record high today is 56 degrees). LIFR-IFR in low clouds and fog in the Lower Treasure Valley terminals (KEUL to KONO) and higher elevation valleys (KBNO/KMYL/KBKE) through the late morning.
Will see similar temperatures today as northwest flow remains aloft, but with upper ridging building to our west it will ultimately lead to warming temperatures in the short term period.
Temperatures will continue to be slightly above normal thanks to weak ridging aloft, diverting any significant weather out of our region. Patchy fog will be possible across northeastern North Texas, where slightly cooler temperatures will reduce dew point depressions to near 0 deg.
Overnight tonight, mid-level ridging is likely to keep any additional precipitation forcing to a minimum, though moisture under a subsidence inversion will persist low-level overcast decks with high confidence.
1129 AM CST Mon Jan 29 2024 (Today and tonight) An unseasonably warm late January day will take place today as an upper level ridge axis slowly progresses eastward across the Intermountain West. A sharp but weak upper level short wave trough will drop southward through the Central Plains today. We will see weak surface lee troughing in eastern New Mexico leading to weak downsloping southwesterly surface winds in West Texas.
Upper ridging will persist through the week along with mild and dry conditions. Dry west-southwesterly flow will resume Tuesday with highs Tuesday pushing into the upper 60s from NW SD and NE WY through the western SD plains and foothills; cooler temperatures will prevail in areas where snow cover lingers.
This morning's surface analysis places a strong cold front now clearing southeast of the Bahamas, with elongated high pressure building in its wake across the Tennessee Valley and the Southeast.
Temperatures will be around to just above freezing Tuesday morning and warm up into the mid 30s during the day. Overall, not really expecting much in the way of impacts with 0-2 inches of snow across the area with the highest amounts along the US-127 corridor.
915 AM PST Mon Jan 29 2024 Upper level ridge is over southern California and continues the above average temperatures.
158 PM EST Mon Jan 29 2024 A dry and cooler air mass is spreading across the region. High pressure will dominate through Tuesday with seasonable temperatures.
1241 PM EST Mon Jan 29 2024 Light freezing drizzle is occurring across portions of northern New York and northern Vermont this morning; slick road conditions are possible.
1145 AM CST Mon Jan 29 2024 (Today through Tuesday afternoon) Weak ridging will continue to dominate the short term with some beautiful, January conditions. An upper trough moving through the Great Lakes will send a very weak cold front south into the region.
This has allowed for sunny skies and light winds to prevail this afternoon, with temperatures warming into the low to mid 70s this afternoon, near or just above normal for late January. With high clouds expected to prevail through Tuesday night, overnight temperatures for both tonight and Tuesday night should be slightly warmer than this morning as radiational cooling processes are inhibited by cloud cover.
Highs and lows will be just a few degrees warmer, in the mid-50s to lower-60s and mid-30s to near 40, respectively. As the trough axis and moisture gradient swings across Tennessee and into western North Carolina overnight Tuesday, precipitation chances will increase (but remain fairly scant, at 30% or less for all but far northeast Georgia) for the northern and eastern half of the forecast area.
1112 AM CST Mon Jan 29 2024 (Today and tonight) Patchy light freezing fog is possible this morning in a small part of north central Oklahoma before temperatures rise above freezing.
Lower confidence exists in the potential for this patchy fog, although, given temperatures are expected to be at or near freezing, some patchy freezing fog may occur. Ridging impacts will be short-lived as an upper low trails the ridge but not before slightly above normal temperatures return tomorrow afternoon.
1047 AM MST Mon Jan 29 2024 - High pressure over the region will keep temperatures above normal through the week.
/21 (Now through Tuesday) As an upper trof exits off into the western Atlantic, another upper trof dives from the northern Plains into the eastern states during the period. Highs today will be mostly in the mid to upper 50s, then warmer temperatures in the lower to mid 60s follow for Tuesday. Lows tonight range from the lower 30s well inland to the mid 30s near the coast.
941 PM EST Mon Jan 29 2024 A dry and cooler air mass is spreading across the region. High pressure will dominate through Tuesday with seasonable temperatures.
Overnight tonight, mid-level ridging is likely to keep any additional precipitation forcing to a minimum, though moisture under a subsidence inversion will sustain low-level overcast deck with high confidence.
523 PM CST Mon Jan 29 2024 - Cold front to bring rain chances (40-60%) east of a Lacon- to- Effingham line after midnight. There is a low probability (less than 30% chance) for a couple hundredths of freezing rain in areas east of I-57 where low clouds lingered Monday afternoon.
Dry and warmer weather will continue into Tuesday as highs reaching the low to mid 60s over the southern half of the Mid- South. A mainly dry cold front will move through the region Tuesday afternoon and evening.
939 PM EST Mon Jan 29 2024 High pressure and dry weather will dominate across the region through Tuesday.
543 PM CST Mon Jan 29 2024 (This evening through Tuesday) Thin cirrus continued to overspread the region this afternoon downstream of upper ridging to our west. Favored a blend of cooler guidance tonight in our NW zones where light winds look on par for another round of efficient radiational cooling. Otherwise, cirrus should dissipate tomorrow under the sprawling ridge.
417 PM MST Mon Jan 29 2024 - High pressure over the region will keep skies mostly clear and temperatures above normal through the week.
Temps behind the front (NE OK/ NW AR) will likely be cooler than locations out ahead of it (SE OK).
549 PM CST Mon Jan 29 2024 - A cold front will bring move through the area tonight accompanied by a chance of light rain. Most of Missouri has seen the sun all day, and as a result temperatures have risen into the low to mid-50s. The evening will remain clear and calm before a cold front brings low- level clouds and minor precipitation chances back to the region tonight into Tuesday. The cold front will usher in cooler air on its backside.
525 PM CST Mon Jan 29 2024 - Small light rain/snow chances (15-25%) along a Canadian cold front tonight and associated with the cyclonic flow aloft in the wake of this front on Tuesday morning. - There may be some redevelopment of dense fog across parts of southwest Wisconsin and northeast Iowa this evening, and then the visibilities should improve in the wake of the Pacific cold front between 30. During this evening, a Pacific cold front will move southeast across the Upper Mississippi River Valley. Unlike the past several days, the visibilities should improve in the wake of the Canadian cold front between 30. 5C on Tuesday afternoon and mainly cloudy skies, high temperatures will be cooler (ranging from mid-30s to lower 40s).
940 PM EST Mon Jan 29 2024 Lake effect snow showers will dissipate by the early evening as high pressure moves into the region.
Appears much of the low clouds will erode overnight except for our far eastern counties, with much of the midstate becoming clear. Lows tonight per ridging influences surface and aloft still maintaining some hold on the areas weather should dip below freezing, coldest temperatures Cumberland Plateau Region in mid 20s.
It's difficult to gauge just how opaque the high cloud canopy will be. Thus, I have maintained lows Tuesday morning in the lower to mid 40s and highs on Tuesday in the mid 60s to lower 70s. /Issued 300 PM CST Mon Jan 29 2024/ /Tuesday Night Onward/ A weak cold front will make its way across the region Tuesday night, ultimately resulting in a northerly wind shift.
634 PM CST Mon Jan 29 2024 Dry and warmer weather will continue into Tuesday as highs reaching the low to mid 60s over the southern half of the Mid- South. A mainly dry cold front will move through the region Tuesday afternoon and evening.
540 PM CST Mon Jan 29 2024 (Tonight through Tuesday night) Other than some streaming high clouds to filter the sun, the next 36 hours will be warmer than normal with south and southwest surface winds in the daytime hours through Tuesday. High pressure ridging over TX will help maintain warm afternoon temps about 5 to 7 degrees above late January normals. A weak backdoor ridge settles over parts of Central to NE TX late Tuesday, but model trend seem to favor the upper ridge having more influence on the surface winds and temperatures.
635 PM EST Mon Jan 29 2024 Lake effect snow showers will dissipate by the early evening as high pressure moves into the region.
Temperatures in the low to mid 50s can be expected across the east coast, and low to mid 40s over the interior and SW portions of the region.
(This evening through Tuesday night) Benign weather will continue tonight through Tuesday night as an upper level ridge of high pressure prevails over the plains states.
336 PM CST Mon Jan 29 2024 - Cold front to bring rain chances (40-60%) east of a Lacon- to- Effingham line after midnight. There is a low probability (less than 30% chance) for a couple hundredths of freezing rain in areas east of I-57 where low clouds lingered Monday afternoon.
No changes to existing forecast or reasoning as high pressure building into the region continues to filter cool/dry air mass into the state. Dry and slightly warmer Tue on tap across the area under mostly sunny skies, with afternoon highs in the mid to upper 60s. Cold, dry air continues to push into the area following yesterday's cold front. The winds will also begin to diminish tonight as high pressure settles in.
532 PM CST Mon Jan 29 2024 (This evening through Tuesday night) Benign weather will continue tonight through Tuesday night as an upper level ridge of high pressure prevails over the plains states.
526 PM CST Mon Jan 29 2024 (This afternoon through Tuesday night) Quiet and pleasant weather is on tap to close out the month of January across West Texas and Southeast New Mexico supplied by upper level ridging.
This is thanks to a building upper ridge over the region coupled with downslope warming westerly winds. Overnight temperatures will be warmer too with lows in the upper 20s to lower 40s tonight and Tuesday night.
642 PM EST Mon Jan 29 2024 High pressure and dry weather will dominate across the region through Tuesday.
753 PM EST Mon Jan 29 2024 Lake effect snow showers will dissipate by the early evening as high pressure moves into the region.
(Tonight) Quiet/seasonably cool wx conditions prevail across the central TN Valley this Mon evening, as a weak area of high pressure quickly moves eastward across the region. Predom clear skies are in place as evidenced by a dry NW flow regime, as current temps fall into the lower/mid 30s.
522 PM CST Mon Jan 29 2024 (Tonight) Dense low level stratus has since cleared out this afternoon as drier air moves into the region with high pressure situated just to our west. Current afternoon temperatures range from the lower to upper 40s and will gradually drop this evening after sunset. Otherwise, overnight lows will be in the lower 30s/upper 20s with light winds becoming southerly.
910 PM EST Mon Jan 29 2024 A dry and cooler air mass is spreading across the region. High pressure will dominate through Tuesday with seasonable temperatures.
(Today through Wednesday afternoon) Another gorgeous day is in store for West Texas and southeast New Mexico as upper level ridging holds in place. The rain chances are short lived and amounts stay on the lower side.
The cooling trend will be reinforced on Wednesday with a dry cold front that will push through the area.
1047 PM CST Mon Jan 29 2024 (This afternoon through Tuesday night) Quiet and pleasant weather is on tap to close out the month of January across West Texas and Southeast New Mexico supplied by upper level ridging.
Light southerly return flow is expected to develop overnight, in advance of an upper level trough dropping southeast through the middle MS River Valley. PWB Dry and warmer weather will continue into Tuesday as highs reaching the low to mid 60s over the southern half of the Mid- South. A mainly dry cold front will move through the region Tuesday afternoon and evening. Cooler air will move in behind the front with temperatures dropping below normal readings for Wednesday.
Areas of cirrus cigs will continue to increase across the region overnight, but should gradually thin from NW to SE with the passage of an upper trough from mid-morning through the afternoon Tuesday.