Aikyam-Lab/Synoptic-Bench huggingface dataset:
814 PM CST Fri Mar 5 2021 High pressure will slowly drift through the Midwest this weekend, keeping our dry weather pattern going for a few more days.
A fast moving upper level closed low will dive southward from eastern Oklahoma to the Gulf coast over the next 12 hours. A cold front will push through behind it with increased winds and slightly cooler conditions by late tonight and Saturday. Troughing will set up over the northeast as an upper level ridge builds in over the Plains this weekend.
327 PM MST Fri Mar 5 2021 Upper ridge will keep warm and dry conditions going over the region into Saturday. The upper ridge will be moving eastward, though, and will push a jet over the mountains of southwestern Canada. This surface pressure pattern will cause breezy conditions to expand to more of south central MT and for Carter and Fallon Counties, with perhaps a narrow zone of lighter winds in the trough of low pressure from about eastern Big Horn County to Rosebud County.
/issued 206 PM CST Fri Mar 5 2021/ The cooler air arrived today and along with it plenty of wind and blowing dust.
A low chance of light precip in the foothills and mountains is possible tomorrow along with cooler conditions.
247 PM MST Fri Mar 5 2021 A few cirrus clouds are passing through central Wyoming as we speak, along the periphery of a 500 mb upper-level ridge now moving across the Intermountain West. By tomorrow, the ridge axis will align with the spine of the Rockies in the morning, passing east in the afternoon. Anticipating the one of the warmest days yet, as well as drier and gustier conditions, especially to the High Plains. To the west, gusty conditions will impact the western portions of Converse and Carbon counties as a low-level jet effects south-central Wyoming on the backside of the progressing ridge.
548 PM EST Fri Mar 5 2021 Dry air feeding into the area on northwest flow from high pressure over the upper Mississippi Valley/western Great Lakes will promote VFR conditions with generally clear skies. Southeast Michigan resides within the influence of the surface anticyclone as cold air between 3.
250 PM MST Fri Mar 5 2021 There are barely any clouds in the sky across our forecast area this afternoon as there is rather dry air underneath an upper level ridge that is over the Intermountain West. Subsident flow within the ridge will continue to be over our forecast area tomorrow keeping conditions dry with mostly sunny skies. A weak trough will pass through the Northern Rockies region tomorrow staying well to the northwest of Colorado. The only impact this trough will have on the weather in our area is to increase winds across the eastern plains due to lee cyclogenesis forming over the high plains.
A period of moderate to locally heavy rainfall will occur across the lowlands this evening, while accumulating snowfall takes place across interior ridges and mountains.
Much cooler day today versus yesterday with current temperatures only in the mid 40s to low 50s. High clouds have spread across the whole area this afternoon in association with an upper level low passing to our southwest.
Southwest winds begin to increase ahead of a cold front expect to arrive Saturday afternoon. The cold front will generate mainly mountain snow showers, but some of this activity will cross the Southwest valleys.
518 PM CST Fri Mar 5 2021 High pressure will slowly drift through the Midwest this weekend, keeping our dry weather pattern going for a few more days.
This feature will move southeast over night and will pass south of our region ahead of a progressive mid- and upper trough that opens up and approaches. An area of overrunning precipitation will form north of a surface warm front this evening.
/issued 245 PM CST Fri Mar 5 2021/ Skies are cloudy across much of the Mid-South this afternoon with temperatures ranging from the mid 40s to the lower 60s. The rain is due to an upper level low over eastern Oklahoma. This upper level low will move southeast and weaken through tonight.
Cloud cover continues to increase ahead of an approaching mid to upper-level trough. Eventually the mid-levels will moisten as the trough approaches, but that might not occur until past sunrise. A weak cold front is being analyzed this evening across the northern peninsula from the Cape to the Nature Coast. Rain chances increase rapidly Saturday (up to 80-90 percent), as overrunning moisture north of the front and trough aloft passing across Florida generates widespread rainfall, especially into the late morning and afternoon hours. Cloud cover and rainfall Saturday will keep temperatures cooler than normal in the 60s to low 70s, except mid 70s along the southern Treasure Coast. Expect winds to increase late tonight into Saturday as a cold front pushes across the local waters.
317 PM CST Fri Mar 5 2021 203 PM CST Quiet weather will continue across the area to start the weekend as stout upper-level ridging builds eastward across the Great Plains into the Mississippi River Valley. An axis of 900-950 hPa moisture advecting SSE across Lake Superior into northern Lake Michigan is expected to continue in a loosely anti-cyclonic flow around the ridge tonight. The western flank of the low-level ridge will continue to affect the area Saturday night, resulting in light E to SE winds with lows generally in the 20s area-wide.
The trough to the west will begin to slide eastward Saturday night. Low temperatures tonight will be in the mid 20s to lower 30s, with highs Saturday ranging from the lower 50s across west central Minnesota, to around 70 degrees across south central South Dakota.
400 PM MST Fri Mar 5 2021 A few cirrus clouds are passing through central Wyoming as we speak, along the periphery of a 500 mb upper-level ridge now moving across the Intermountain West. By tomorrow, the ridge axis will align with the spine of the Rockies in the morning, passing east in the afternoon. Anticipating the one of the warmest days yet, as well as drier and gustier conditions, especially to the High Plains. To the west, gusty conditions will impact the western portions of Converse and Carbon counties as a low-level jet effects south-central Wyoming on the backside of the progressing ridge.
/issued 527 PM CST Fri Mar 5 2021/ Skies are cloudy across much of the Mid-South this afternoon with temperatures ranging from the mid 40s to the lower 60s. The rain is due to an upper level low over eastern Oklahoma. This upper level low will move southeast and weaken through tonight.
A cold front is currently draped across the forecast area. The airmass will be modifying however, and some moisture around the 925-850 layer currently wrapped around the low will work its way southward bringing an increase in low level clouds late in the night. Expect temps tomorrow to warm into the lower 70s for most of the area with mid 60s along the coast.
852 PM CST Fri Mar 5 2021 A cooler and drier air mass continues to spill into the Tennessee Valley region this evening in wake of a backdoor cold front that dropped through the region earlier in the day. Dense mid to high cloud cover continues to filter across the area as an upper-level trough dips southeast into the Gulf of Mexico. It should be slightly cooler, despite more sunshine, as strong cold air advection counters daytime heating. Highs in the lower to mid 50s are expected in most areas.
631 PM EST Fri Mar 5 2021 Aviation - High Pressure and Fair Weather This Weekend - Wet Weather Mid-Late Week as Low Pressure Moves Through - High Pressure and Fair Weather This Weekend The tranquil weather of the past few days continues through the weekend as surface ridging holds sway.
As the upper low shifts southeastward, drier air will work in, with clouds diminishing by Saturday morning.
Upper level ridge axis is just to our west. There are barely any clouds in the sky across our forecast area this afternoon as there is rather dry air underneath an upper level ridge that is over the Intermountain West. Subsident flow within the ridge will continue to be over our forecast area tomorrow keeping conditions dry with mostly sunny skies. A weak trough will pass through the Northern Rockies region tomorrow staying well to the northwest of Colorado. The only impact this trough will have on the weather in our area is to increase winds across the eastern plains due to lee cyclogenesis forming over the high plains.
Temperatures cool enough for some of that light precipitation to be of a "wintry" nature early this morning across the higher elevations of the far north, but again, little potential to accumulate with temperatures at or above freezing and precipitation so light.
High pressure and northwest flow will be the set up. Deep troughing currently exists across eastern North America, with the upper-level low centered over eastern Quebec. The northwest flow and additional cloud cover will keep cooler temps in place through the day with highs in the mid to upper 30s south and low 30s up north with even a few upper 20s reading for highs.
1043 PM CST Fri Mar 5 2021 Dry and mild conditions to persist for the end of this first week of March with ridging aloft and high pressure centered west of Hudson Bay extending well south into the mid-Mississippi River Valley. With light winds and modest moisture trapped under the nocturnal inversion, most of which due to snowmelt, some patchy freezing fog is possible in western and southern MN but is not expected to cause many, if any, issues. Will look for another mostly clear sky on Saturday with temperatures nearly identical to today as highs range from the mid 40s in western WI to the lower 50s in western MN. With a more pronounced warmer low level flow in place tomorrow night, lows will only drop to the mid 20s to upper 30s.
An upper level ridge moves into the central plains for Saturday which should lead to quiet conditions to start off the weekend. With warmer air moving in and plenty of sunshine high temperatures today should get into the upper 60s to near 70 for most of the region.
However the absence of a lee trof in e-se NM will tend to preclude a warm-up today and high temps will generally remain 5-10 degrees below normal. By Tue high temps will return to above normal and remain so thru Thur as the low-level thermal ridge amplifies and advances farther e. GFS suggests a retreating dryline Wed eve and Thur eve, but colliding with a Pacific front Thur eve, a few storms across PB? Temps will then turn cooler Fri, but moreso Sat. There are large timing differences with trof passage thus large degree of uncertainty Fri- Sat.
Temperatures will slowly dip into the low 30s by early Saturday morning. While we are seeing some light echoes on radar this evening, it appears that the lower levels are just too dry to allow any precip to reach the ground.
909 PM CST Fri Mar 5 2021 Dry and mild conditions to persist for the end of this first week of March with ridging aloft and high pressure centered west of Hudson Bay extending well south into the mid-Mississippi River Valley. With light winds and modest moisture trapped under the nocturnal inversion, most of which due to snowmelt, some patchy freezing fog is possible in western and southern MN but is not expected to cause many, if any, issues. Will look for another mostly clear sky on Saturday with temperatures nearly identical to today as highs range from the mid 40s in western WI to the lower 50s in western MN. With a more pronounced warmer low level flow in place tomorrow night, lows will only drop to the mid 20s to upper 30s.
Overnight lows into Sun morning will be similar to this morning, but a few degrees warmer over NW OK where winds will remain a bit elevated.
152 AM MST Sat Mar 6 2021 Current surface map shows trof/stationary front across far eastern Montana into western South Dakota. Upper level ridge located over the Northern Plains, with cirrus coverage increasing. Dry cold front passage tonight.
142 AM MST Sat Mar 6 2021 An upper ridge over eastern Montana this morning will move to the east today. Look for warm and dry weather today ahead of a cold front that will move through the area this evening. The cold front this evening will have limited moisture and only Petroleum County will have any chances for showers.
323 AM EST Sat Mar 6 2021 Low pressure will pass well to our south through today. Otherwise, chilly high pressure will extend east across the central Appalachians and southern middle Atlantic through the weekend. The high was building south and east through the OH/TN valley and central Appalachians into the Mid-Atlantic states. The high cloudiness will occasionally be thin enough for ample sunshine, but at other times will be thick enough to dim or obscure the sun. This high level moisture is associated with several upper level disturbances that will be tracking SE and E within the large and broad trough over the eastern United States.
A strong ridge has built across the InterMountain West, nosing as far north as Hudson Bay. This ridge will be the key player in our forecast the next several days, bringing warm and sunny conditions to the Mid-South through midweek. At the surface, a cold front extends from east to west along the northern Gulf Coast, arcing northwest into the TX Panhandle.
1037 PM CST Fri Mar 5 2021 Cold front pushing off the coast near Matagorda and near Freeport and Pearland. Spotty showers near the low in the vicinity of Houston/Galveston/Sugarland area for a few more hours.
1151 PM CST Fri Mar 5 2021 Mid to high level moisture continues over the central and southern parts of the state as an area of low pressure exits the region. High pressure will build in behind this system with clearing skies. Northeast winds early in the period will become light and variable as the high pressure builds in. As the upper low shifts southeastward, drier air will work in, with clouds diminishing by Saturday morning.
This comes as an upper trough swings across the region. Temperatures will be on the cooler side with highs in the 60s, and some upper 50s possible in the Delta. High pressure at the surface will move in today as well as northwest flow aloft.
Weather pattern across the central CONUS through mid week will be dominated by ridging aloft and a corresponding broad zone of temperatures well above normal.
1130 PM EST Fri Mar 5 2021 Aviation - High Pressure and Fair Weather This Weekend - Wet Weather Mid-Late Week as Low Pressure Moves Through - High Pressure and Fair Weather This Weekend The tranquil weather of the past few days continues through the weekend as surface ridging holds sway.
310 AM EST Sat Mar 6 2021 Upper level trough sitting over Ontario begins to amplify and dig further south/southwest today resulting from a mid-level PV anomaly dropping south from the Hudson Bay into the eastern Great Lakes. This shift in the location of the trough/jet will allow for subtle CAA locally as 850mb temps drop by 1-3C. Exceptions are the Thumb being a bit cooler in the low 30s and Detroit/Ohio border areas who could get up to around 40.
Have only seen one rogue lightning strike over the terminal areas all evening and that was near KGPT, which probably had the lowest threat of all terminals. A fast moving upper level closed low will dive southward from eastern Oklahoma to the Gulf coast over the next 12 hours. A cold front will push through behind it with increased winds and slightly cooler conditions by late tonight and Saturday. Troughing will set up over the northeast as an upper level ridge builds in over the Plains this weekend.
The upper trough will swing through Middle Tennessee over the next several hours with the upper flow then turning northwesterly.
Despite weak radar echoes across northern AL, northern GA, and southern portions of the area, continually dry air in the low-levels to the surface has inhibited precipitation from reaching the ground. CD Chattanooga Airport, TN 57 32 59 33 64 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 53 30 54 30 60 / 0 0 0 0 0 Oak Ridge, TN 55 30 55 30 60 / 0 0 0 0 0 Tri Cities Airport, TN 49 26 49 26 57 / 0 0 0 0 0.
This will result in mostly clear and cool conditions this weekend with warmer temperatures then expected for the upcoming work week. This will result in north to northwesterly low level flow and a continuation of cooler temperatures. Expect mostly sunny skies today with highs in the low to mid 40s.
925 PM CST Fri Mar 5 2021 Surface and upper-trough that brought convection to the region earlier this evening are now pushing east across the Mississippi River. Clouds are forecast to erode from the northwest as upper-ridging strengthens aloft. Otherwise, temperatures forecast to fall into the low to mid 40s across much of the region with the exception of slightly cooler temperatures in the upper 30s north of Interstate 30 tonight. /Tonight through Saturday Night/ A broad upper trough moving from Oklahoma into Arkansas will continue to evolve into a positively-tilted trough while moving across the Mississippi River tonight. The passage of the upper trough axis tonight should help to move the rain south and east of the forecast area, and the increasing subsidence should also bring the precip to an end.
With high pressure in place, continue to expect another chilly night with lows in the teens and 20s, and light winds. Anderson (Issued 302 PM CST Fri Mar 5 2021) Tonight through Saturday night: A weak cold front will sink southward tonight, bringing light northerly winds with it. Clouds will increase for a time before daybreak, but high pressure will ultimately win, and skies will clear out again tomorrow. Temperatures will be slightly cooler on Saturday, owing to the light northerly winds.
1134 PM CST Fri Mar 5 2021 High pressure will slowly drift through the Midwest this weekend, keeping our dry weather pattern going for a few more days.
A cold front is pushing into the gulf this morning while high pressure is building into the Mississippi Valley.
1044 PM CST Fri Mar 5 2021 (This evening through Saturday) Rain will continue to gradually end across the fa the rest of this afternoon as the upper low continues to move eastward. Warmer temperatures are expected tomorrow with highs in the 60s.
1013 PM MST Fri Mar 5 2021 20z surface analysis had lee trough from central MT into eastern WY. Water vapour depicted upper ridge over the Rockies moving eastward into the plains. Fantastic Friday weather overall with some thin cirrus overtopping the ridge into the CWA. Low level thermal ridge peaks over the CWA. Lee trough moves east as a warm front in response to weak low formation over eastern MT. Pressure falls along warm front 3-5mb/3hr into eastern MT/western ND.
Despite weak radar echoes across northern AL, northern GA, and southern portions of the area, continually dry air in the low-levels to the surface has inhibited precipitation from reaching the ground. BW Chattanooga Airport, TN 37 57 32 59 33 / 10 0 0 0 0 Knoxville McGhee Tyson Airport, TN 34 53 30 54 30 / 0 0 0 0 0 Oak Ridge, TN 33 55 30 55 30 / 0 0 0 0 0 Tri Cities Airport, TN 29 49 26 49 26 / 0 0 0 0 0.
A cooler and drier air mass continues to spill into the Tennessee Valley region this evening in wake of a backdoor cold front that dropped through the region earlier in the day. Dense mid to high cloud cover continues to filter across the area as an upper-level trough dips southeast into the Gulf of Mexico. It should be slightly cooler, despite more sunshine, as strong cold air advection counters daytime heating. Highs in the lower to mid 50s are expected in most areas.
A tight pressure gradient due to high pressure in eastern Idaho and lower pressure in Oregon (associated with a cold front) is enhancing the winds this evening, especially in southwest Idaho. Temperatures will be 10-20 degrees cooler with highs near normal. VFR except periods of MVFR conditions in showers and areas of mountain obscuration on Saturday as a cold front crosses the area from the west.
220 AM EST Sat Mar 6 2021 Low pressure will pass well to our south through today. Otherwise, chilly high pressure will extend east across the central Appalachians and southern middle Atlantic through the weekend. The high was building south and east through the OH/TN valley and central Appalachians into the Mid-Atlantic states. The high cloudiness will occasionally be thin enough for ample sunshine, but at other times will be thick enough to dim or obscure the sun. This high level moisture is associated with several upper level disturbances that will be tracking SE and E within the large and broad trough over the eastern United States.
258 AM EST Sat Mar 6 2021 The Ohio Valley remains east of a sharply amplified upper trough. High temperatures will range from the mid 40s near Lexington, KY to the low 50s near Jasper, IN and Bowling Green, KY. Near calm winds and mostly clear skies will help low temperatures reach into the low to mid 20s in the Bluegrass to near 30 around Bowling Green.
Still think the fog threat will be tempered somewhat with the high clouds and a light southeast breeze in place.
Despite this, temperatures will be several degrees warmer today, thanks in part to more sunshine.
947 PM MST Fri Mar 5 2021 A few cirrus clouds are passing through central Wyoming as we speak, along the periphery of a 500 mb upper-level ridge now moving across the Intermountain West. By tomorrow, the ridge axis will align with the spine of the Rockies in the morning, passing east in the afternoon. Anticipating the one of the warmest days yet, as well as drier and gustier conditions, especially to the High Plains. To the west, gusty conditions will impact the western portions of Converse and Carbon counties as a low-level jet effects south-central Wyoming on the backside of the progressing ridge.
/issued 925 PM CST Fri Mar 5 2021/ Surface and upper-trough that brought convection to the region earlier this evening are now pushing east across the Mississippi River. Clouds are forecast to erode from the northwest as upper-ridging strengthens aloft. Otherwise, temperatures forecast to fall into the low to mid 40s across much of the region with the exception of slightly cooler temperatures in the upper 30s north of Interstate 30 tonight. /Tonight through Saturday Night/ A broad upper trough moving from Oklahoma into Arkansas will continue to evolve into a positively-tilted trough while moving across the Mississippi River tonight. The passage of the upper trough axis tonight should help to move the rain south and east of the forecast area, and the increasing subsidence should also bring the precip to an end.
324 AM EST Sat Mar 6 2021 After a beautiful last few days a cold front is now draped over the area. As the day goes on models agree that a low pressure system will form along the the front in the Gulf and the push from west to east across the state. By the evening and overnight hours the low pressure will be in the Atlantic taking the cold front with it.
123 AM MST Sat Mar 6 2021 A cold front crosses the region this afternoon.
The 00Z KKEY RAOB sampled no height changes (850 and 700 mb actually increased 10 m), so mean layer ridging is intact. Light northeast breezes across the Lower Keys give way to gentle easterly breezes for the Middle and Upper Keys. Is this a piece of the Bahamian trough or just drainage from the Mainland? Temperatures are warmer for the locations in the easterlies, generally 70 and above. The Lower Keys range from 59 in the radiational cooling capitol of the Keys (BPK), to the upper 60s. A stalled trough of low pressure will linger across the Bahamas and the Straits of Florida tonight. An area of low pressure will dive southeastward through the eastern Gulf of Mexico and across the southern half of Florida Saturday and Saturday evening, pushing a frontal boundary through the coastal waters of the Florida Keys.
With cool northerly flow continuing through the morning hours, expect lows this morning in the low to mid 40s. Due to the cooler air mass in place today, expect highs in the low 60s. (Saturday night through next Friday) Due to the recent cold frontal passage, cool and dry conditions will continue into this weekend.
223 AM CST Sat Mar 6 2021 A mid/upper ridge is progged to translate eastward across the central CONUS today and tonight.
234 AM EST Sat Mar 6 2021 Considerable cloudiness today as a weak low pressure system tracks to the south of the area.