Aikyam-Lab/Synoptic-Bench huggingface dataset:
MVFR ceilings and gusty northwesterly winds will continue to surge south and eastward tonight behind the cold front, affecting all terminals well into the afternoon tomorrow. Cold front is currently moving into northwest AR and southeast OK, with gusty northwest winds and stratus filling in behind the boundary.
Cold front is currently moving into northwest AR and southeast OK, with gusty northwest winds and stratus filling in behind the boundary.
5" are expected with the highest amounts south of the MO river. This evening, a cold front marches through the area dropping temperatures back into the 30s. Much of the precipitation is expected to be ushered out with the cold front during the late evening and overnight. Strong NW flow on the back side of the cold front facilitates substantial cold air advection limiting our high temperatures on Sunday to around 35 degrees. Ridging across the center of the country keeps our weather calm and mild for remainder of the next work week.
A storm system over southern Missouri this evening will continue to move to the east dragging a cold front through the state as it does. Clouds will break up slightly before moisture rotating around the upper low spreads back over the state.
1052 PM CST Sat Jan 30 2021 Broad thermodynamic lift (RAP 280-295 K sfcs) working on deepening low level saturation to produce areas of freezing drizzle across parts of SE MN, NE IA early this afternoon, inching toward far SW WI. Some hints of a seeder-feeder potential too, which could limit the freezing drizzle in some locations. The parent upper level trough holds to the south without much indication of energy pivoting around the trough. Temps would be cooler with mostly snow favored - minor to light accumulations. Freezing drizzle has finally transitioned to snow at RST.
A band of light to moderate showers continues to spread across northeast LA through northern MS this evening ahead of an approaching cold front. As the low level jet departs the area roughly around midnight and the pressure gradient relaxes somewhat, these gusts will decrease leaving just breezy conditions by the early morning hours. Mid afternoon surface analysis had a <1000mb low nearing the mid Mississippi river valley as well and a ridge nosing west along the Gulf coast states. Ahead of the approaching cold front, a gusty south wind will continue to increase low level across our CWA. The cold front is expected to enter our northwest zones before midnight and exit our southeast zones by early afternoon.
1136 PM CST Sat Jan 30 2021 A cold front will move across the local area Sunday. As the cold front moves through late morning through early afternoon, rain will shift east and ceilings should rapidly improve.
1012 PM MST Sat Jan 30 2021 Current Visible Satellite loop across eastern Wyoming and western Nebraska shows diminishing cloud cover along the Front Range as the split upper level trough axis has moved east of the area into the northern and central plains. For Sunday and Monday, all models show quiet weather over the Front Range as an upper level ridge axis translates eastward across the mountains. This ridge axis is expected to temporarily stall along the Front Range early in the week leading to above normal temperatures each afternoon. Highs early in the week will reach into the mid-50s east of the Laramie Range, potentially hitting the low 60s in the Nebraska Panhandle. Regardless, warm weather will settle in early in the week with an upper level ridge setting up.
/Issued 1137 PM CST Sat Jan 30 2021/ /Overnight through Monday/ Our strong upper trough continues to depart the region tonight with a cold front pushing through Central Texas. Temperatures will continue to fall into the lower 40s and upper 30s by morning with brisk northwest winds making it feel colder. High pressure will settle in overnight Sunday night with winds diminishing and clear skies. This will allow temperatures to fall into the lower 30s across the region with below freezing temperatures in rural areas. Upper ridging will spread into the Plains on Monday with continued sunny skies and temperatures warming into the upper 50s and lower 60s.
1058 PM CST Sat Jan 30 2021 Low pressure over western Illinois will continue to move to the east through the night, dragging a cold front across the state. A storm system over southern Missouri this evening will continue to move to the east dragging a cold front through the state as it does. Clouds will break up slightly before moisture rotating around the upper low spreads back over the state.
Therefore, should see a cloudy day coming up but rain shower chances will be on the low side with just light amounts possible. Looking further upstream, however, we see a series of trough axes extending southwest from the upper low over Lake Michigan. Freezing levels will be dropping and should drop below 7-8 hundred ft agl just aft 06Z, Thus, rain shower activity will switch to snow. Overnight lows will fall to near freezing for most areas with little warm up on Monday.
At the surface, a cold front will work its way southward across the area this morning turning our winds out of the north. It will be cooler and breezy this afternoon behind the front. Clear skies and diminishing winds overnight will allow temperatures to drop into the lower 30s for most of the area.
/issued 124 AM EST Sun Jan 31 2021/ High pressure moves into W Atlantic today with southerly low level flow increasing temps and moisture for the local area. Associated complex surface storm system to move well N of the area but attendant cold front expected to move towards N FL late this afternoon with clouds increasing areawide and chances for showers in the N Nature Coast. Modest upper energy to wrap around base of upper trough to push cold front through the FL Peninsula tonight with broad band of widespread showers and isolated thunderstorms ahead of and along the front as it moves south through the area, SPC continues to show general thunderstorms with this system. NW flow aloft to bring cold Canadian high pressure airmass into the region on breezy NW-N winds for much cooler and drier conditions.
The highlights of this forecast package feature a warming trend into the workweek with potential drastic changes in sensible weather by late this week. Winds will continue to gust to between 25 and 35 mph through much of the day, finally subsiding this evening as the ridge builds in. Upper level ridging expands over the forecast area early this week. As such, calm and slightly warmer conditions are expected tomorrow with high pressure remaining in control of our weather.
523 AM CST Sun Jan 31 2021 The system which brought freezing drizzle to parts of the area continues to slide off to the east very early this morning. If clouds hold longer than anticipated, lows may be a few degrees warmer than this.
Temps have slipped sub-freezing across the area this morning and with wind 15-20kts and gusts to 30, wind chills are biting. Slick roads reported in the Omaha metro as freezing drizzle has persisted for the last couple of hours. Expect the thermometer to reach a zenith near freezing, but the human body to estimate something closer to 20F. Temps will rebound with a 500MB ridge nosing east through the period.
Much of the high resolution guidance also redevelops cloud cover over much of the central tonight. Some of the high resolution guidance is suggesting fog may redevelop tonight, so that will be another issue to keep an eye on.
438 AM MST Sun Jan 31 2021 Water vapor shows upper trof shifting further east with large ridge crossing the Rockies. At the surface, ridge is located over the western Dakotas, with low stratus along and east of a Lemmon to Pine Ridge line. Low stratus and fog will gradually shift east/dissipate this morning as drier air works in with approaching upper ridge.
340 AM CST Sun Jan 31 2021 The highlights of this forecast package feature a warming trend into the workweek with potential drastic changes in sensible weather by late this week. Winds will continue to gust to between 25 and 35 mph through much of the day, finally subsiding this evening as the ridge builds in. Upper level ridging expands over the forecast area early this week. As such, calm and slightly warmer conditions are expected tomorrow with high pressure remaining in control of our weather.
High Pressure will be centered to the northeast of the area bringing northwest winds to western Kansas through tonight.
535 AM CST Sun Jan 31 2021 AT 2 AM, light to moderate snow continue to fall across the Upper Mississippi River Valley associated with wrap around moisture from a low pressure system over northern Illinois. The highest totals will be found in Clayton and Fayette counties in northeast Iowa and Grant County in southwest Wisconsin.
Expect breezy north winds along the lower Colorado River Valley today, otherwise expect winds to be light.
Expect MVFR to IFR conditions to prevail across the Rio Grande Valley through 15Z before a cold front moves through the area later this morning. VFR conditions will prevail this afternoon into this evening as high pressure builds into deep south Texas in the wake of the front. The front will bring drier and slightly cooler air across the CWA this afternoon through tonight. Some patchy fog may develop across the coastal sections of deep south Texas this morning before the cold front moves through the area.
309 AM CST Sun Jan 31 2021 Showers along the pre-frontal trof continue to transit the area this morning mainly along the coast and Southcentral Louisiana. The actual cold front is moving into the western portions of the forecast area at this time. The cold front will move across the forecast area through the morning bringing clearing skies and cool northwest breezes.
A warm front brushes the SoDak border, which suggests increased forcing for stratus. Trended closer to the middle of guidance or slightly warmer, betting on considerable snow melt today.
Subtle cold air advection with the northerly flow should result in slightly cooler temperatures through the short term period. Monday looks to trend the cooler of the two days, especially for the locations further south. The colder drainage valleys in the Hill Country could drop down to near freezing into early Monday morning.
514 AM CST Sun Jan 31 2021 VFR prevails for the TAF period with breezy, north winds as a dissipating cold front moves through before becoming light and variable near civil twilight. /issued 310 AM CST Sun Jan 31 2021/ Fair weather is expected across the CWA today as an upper-level ridge builds into the area. The southward sagging cold front, now located over central Oklahoma and extending northwestward into the Texas/Oklahoma Panhandle region will undergo frontolysis later this morning as the ridge builds in. Sincavage A return of southerly to westerly breezes beneath upper level ridging will fuel a nice warm up through the middle of the coming week.
The front will bring drier and slightly cooler air across the CWA this afternoon through tonight. Some patchy fog may develop across the coastal sections of deep south Texas this morning before the cold front moves through the area.
An upper ridge of high pressure was located over the desert southwest, keeping skies mostly clear across the state. The upper ridge remains in place through the short term, allowing for plenty of sun during the day and clear skies tonight. Winds are forecast to be much lighter today, and high temps this aftn will actually be a bit cooler than yesterday due to the lighter winds. Unseasonably warm followed by a potential sharp drop in temperatures with better chances for snow with growing uncertainty Upper ridge will dominate the pattern over the U.
For today the Central Plains will be in northwest flow aloft in between an upper ridge over the Rockies and a couple of troughs to the east in Ontario and into the Ohio valley. Heights gradually rise thru the day as the western ridge axis builds eastward. At the surface, the pressure gradient will begin to relax as high pressure settles across our region later this aftn into tonight. High temperatures this aftn will be dependent upon the degree of insolation and models have trended a bit slower with decreasing cloud cover, with our western zones (Lexington/Phillipsburg areas) seeing more sun and warmer temps than our eastern areas (York/Hebron/Beloit) and it may be late in the day or just before sunset before clouds depart in the east.
310 AM CST Sun Jan 31 2021 Fair weather is expected across the CWA today as an upper-level ridge builds into the area. The southward sagging cold front, now located over central Oklahoma and extending northwestward into the Texas/Oklahoma Panhandle region will undergo frontolysis later this morning as the ridge builds in. Sincavage A return of southerly to westerly breezes beneath upper level ridging will fuel a nice warm up through the middle of the coming week.
341 AM CST Sun Jan 31 2021 Low pressure is passing by just to the north of the Quad State early this morning. Breezy winds will continue through the day with sustained winds of 15-20 mph and gusts to 30 mph, becoming northwesterly as the low passes by. Wrap-around showers behind the low will bring scattered rain showers during the day, changing towards snow for the evening as we head towards lows just below/near freezing. Northwesterly flow continues over the Quad State Monday, as the trough deepens in the Mid-Atlantic and a ridge builds over the western 2/3rds of the country centered in the Rockies.
Warming 700mb temperatures for Monday as upper ridge builds into the area. Still relatively mild across much of the CWA Weds but an approaching upper trough will drive a cold front across the CWA during the day with some snow behind the front. Upper trough axis move across Weds night with pcpn ending.
Quiet weather conditions under high pressure are expected through Monday night.
426 AM MST Sun Jan 31 2021 Subsidence beneath a building ridge of high pressure will bring dry weather to the area today. Daytime warming is expected to burn off the low cloud cover during the afternoon. The ridge axis shifts east of the Continental Divide tonight as a mid-level trough over the eastern Pacific approaches the West Coast. Clouds increase further Monday as the eastern Pacific trough edges closer to the coast, though precipitation will hold off until midweek.
415 AM PST Sun Jan 31 2021 Dry and mild today with high pressure aloft over the Southwest.
After the powerful storm at the end of last week, high pressure has moved in and the high moisture content at the surface for locations in the northeast corner of the forecast area have produced areas of stratus, that at some elevations becomes fog as the phenomenom becomes surface- based. Areas where temperatures stay at or below 15 deg F have been highlighted with a freezing fog advisory due to the threat not only of low visibility but extreme slick road conditions. Otherwise a dry day as the high dominates.
Surface winds have temporarily shifted to the northwest along a band of heavy showers along the I-20 corridor, but the actual cold front is closer to the Mississippi River. Surface temperatures are currently warmer over northern Mississippi than over north Alabama due to a zone of warm air advection ahead of the cold front. A majority of the showers associated with the upper trof will be south of I-20 by sunrise today. Additional showers will develop this afternoon ahead of the cold front. Lows tonight are forecast to stay just above freezing, so no travel issues expected. The low clouds will linger for most of the day Monday, with some clearing possible across far west Alabama in the afternoon.
815 AM EST Sun Jan 31 2021 A passing low pressure system will bring a round of snow to the region with some Advisory level accumulations across the area.
Only high clouds are expected through Monday as high pressure brings mild and dry conditions to the region. A broad upper level ridge continues to build over the region, providing dry and seasonally mild conditions, with upper-level clouds (chinook arch) at times primarily just downstream of the Rocky Mountain Front through Monday. The ridge moves away to the east late Monday, but the westerly downslope flow will continue to maintain mild but breezy conditions.
334 AM MST Sun Jan 31 2021 Subsidence beneath a building ridge of high pressure will bring dry weather to the area today. Daytime warming is expected to burn off the low cloud cover during the afternoon. The ridge axis shifts east of the Continental Divide tonight as a mid-level trough over the eastern Pacific approaches the West Coast. Clouds increase further Monday as the eastern Pacific trough edges closer to the coast, though precipitation will hold off until midweek.
The upper-level ridge remains in place for warmer temperatures and dry weather.
Dry air is wrapping around the southern periphery of this cyclone, shifting rain chances to the east. Elsewhere, a ridge is building across much of the Intermountain West downstream of an occluded cyclone off the British Columbia coast. Winds will shift around from the northwest this morning as the cold front sweeps across the Mid-South. A few showers will be possible along the cold front this morning near the TN River and south along the AL border but any rainfall should remain brief and light. Benign weather is still anticipated Monday through midweek as a ridge builds over the central CONUS.
513 AM CST Sun Jan 31 2021 Low pressure is passing by just to the north of the Quad State early this morning. Breezy winds will continue through the day with sustained winds of 15-20 mph and gusts to 30 mph, becoming northwesterly as the low passes by. Wrap-around showers behind the low will bring scattered rain showers during the day, changing towards snow for the evening as we head towards lows just below/near freezing. Northwesterly flow continues over the Quad State Monday, as the trough deepens in the Mid-Atlantic and a ridge builds over the western 2/3rds of the country centered in the Rockies.
After a chilly start, mostly sunny and dry conditions are expected for this afternoon, with slightly warmer temperatures.
Temperatures are mainly in the lower 70s across the island chain with dew points in the lower 60s. The big concern for this forecast package continues to be a highly anticipated strong cold front that is due to arrive in the Keys tomorrow morning. This will lead to a complex trio of low pressure systems spread between the Upper Ohio Valley and Carolinas, morphing into a single Nor'easter on Monday. This rapidly deepening complex of lows will blast a trailing cold front through the Keys with strong high pressure over Texas following behind.
Subsidence beneath a building ridge of high pressure will bring dry weather to the area today. Daytime warming is expected to burn off the low cloud cover during the afternoon. The ridge axis shifts east of the Continental Divide tonight as a mid-level trough over the eastern Pacific approaches the West Coast. Clouds increase further Monday as the eastern Pacific trough edges closer to the coast, though precipitation will hold off until midweek.
516 AM EST Sun Jan 31 2021 A passing low pressure system will bring a round of snow to the region with some Advisory level accumulations across the area.
Clouds will continue to dissipate through the morning with further drying as the upper level ridge begins to build across the the Rockies.
342 AM CST Sun Jan 31 2021 Cooler conditions, gusty winds, and very light wintry precip are the main points of discussion in the short term. Temperatures will be cool today, with noon temperatures in the low 30s to around 40 (warmest far southeast).
/issued 309 AM CST Sun Jan 31 2021/ Showers along the pre-frontal trof continue to transit the area this morning mainly along the coast and Southcentral Louisiana. The actual cold front is moving into the western portions of the forecast area at this time. The cold front will move across the forecast area through the morning bringing clearing skies and cool northwest breezes.
230 AM MST Sun Jan 31 2021 Only high clouds are expected through Monday as high pressure brings mild and dry conditions to the region. A broad upper level ridge continues to build over the region, providing dry and seasonally mild conditions, with upper-level clouds (chinook arch) at times primarily just downstream of the Rocky Mountain Front through Monday. The ridge moves away to the east late Monday, but the westerly downslope flow will continue to maintain mild but breezy conditions.
525 AM CST Sun Jan 31 2021 Cooler conditions, gusty winds, and very light wintry precip are the main points of discussion in the short term. Temperatures will be cool today, with noon temperatures in the low 30s to around 40 (warmest far southeast).
251 AM MST Sun Jan 31 2021 MORNING DISCUSSION: Synoptic Setup: Forecast begins with abnormally warm conditions under northwest flow and an amplifying ridge forming over the Pacific Northwest.
High temperatures today under northerly flow will be near average with temperatures above average by tomorrow with highs into the lower 60s for many locations as the main H500 ridge axis continues to shift slowly to the east.
321 AM CST Sun Jan 31 2021 Today and Tonight: The low pressure system we have been tracking has been moving west to east through the Midwest early this morning. But the arrival of a cold front this morning and afternoon will spread a new batch of low clouds and bring a shift to breezy winds out of the northwest. show the cold front to be roughly along a line from Houston, TX to Little Rock, AR to Paducah, KY, and widespread wind gusts in the 25-30 mph range behind it.
506 AM EST Sun Jan 31 2021 A passing low pressure system will bring a round of snow to the region with some Advisory level accumulations across the area.
High pressure will reside across the area through the early portion of the week. Another low pressure system is expected to cross the region during the midweek period.
A cold front moving from northwest to southeast across the region will bring a shift to northwesterly winds with sustained speeds around 10-15 kts and gusts up to 25 kts. /NF/ Today and Tonight: The low pressure system we have been tracking has been moving west to east through the Midwest early this morning. But the arrival of a cold front this morning and afternoon will spread a new batch of low clouds and bring a shift to breezy winds out of the northwest. show the cold front to be roughly along a line from Houston, TX to Little Rock, AR to Paducah, KY, and widespread wind gusts in the 25-30 mph range behind it.
338 AM CST Sun Jan 31 2021 The system which brought freezing drizzle to parts of the area continues to slide off to the east very early this morning. If clouds hold longer than anticipated, lows may be a few degrees warmer than this.
Ridging across the central CONUS clears out skies enabling radiative solar heating to pump temperatures up to the mid 40s.
A mid-level disturbance is currently traversing the area on the back side of the trough, producing very light rain and snow across portions of eastern Missouri and western Illinois. The tight surface pressure gradient on the back side of the low will continue to produce brisk northwesterly winds sustained near 15-20 mph this evening, gusting as high as 25-30 mph.
1007 AM CST Sun Jan 31 2021 Cold frontal boundary and associated precip exiting the region this AM. /issued 309 AM CST Sun Jan 31 2021/ Showers along the pre-frontal trof continue to transit the area this morning mainly along the coast and Southcentral Louisiana. The actual cold front is moving into the western portions of the forecast area at this time. The cold front will move across the forecast area through the morning bringing clearing skies and cool northwest breezes.
SHORT TERM (Now through Monday Night): A cold front passed through Deep South Texas earlier this morning, leaving moderate to gusty northerly winds in its wake. With a cooler and drier airmass gradually sliding in behind this front as high pressure settles over the region today, temperatures will still reach the upper 70s to low 80s this afternoon, but tonight, temperatures will drop into the 40s across most of the area and the 50s along the coast.