Aikyam-Lab/Synoptic-Bench huggingface dataset:
550 AM CST Mon Nov 28 2022 (Today and tonight) An upper trough will dig southeast across the Intermountain West today, and into the central Rockies tonight. With south-southwest winds, temperatures will be considerably warmer tonight compared to the previous night. Expect overnight lows to be mostly in the lower 50s.
331 AM MST Mon Nov 28 2022 Current surface map places cold front across far northwest South Dakota/northeast Wyoming. Cold front moves through the forecast area this morning with breezy northwest winds. Upper trough over western CONUS continues to dig southward today, with trough crossing the plains on Tuesday.
1143 AM CST Mon Nov 28 2022 (Today and tonight) Rather benign westerly flow aloft today will back southwesterly tonight ahead of a broad trough digging into the central Rockies. Lee troughing currently from the TX/NM border north to the Big Horns will gradually sharpen all the while lee cyclogenesis focuses over southeast CO later today.
117 PM MST Mon Nov 28 2022 AFTERNOON UPDATE: Upper low over southern Saskatchewan this afternoon is spinning some wrap around moisture into NE Montana. Will keep a chance of light snow and flurries going this evening especially north of the Missouri River and gradually diminish the chance of light snow overnight as this low moves to the east.
The low chances for snow will end by Tuesday night as the system high tails it east.
1131 AM CST Mon Nov 28 2022 (The rest of today ) Increasing southerly winds will result in a warmer day today across the area.
(The rest of today ) Increasing southerly winds will result in a warmer day today across the area.
300 PM CST Mon Nov 28 2022 After a cloudy and milder night, warmer and and very windy conditions are expected Tuesday, with showers and a chance for storms on Tuesday night.
311 PM EST Mon Nov 28 2022 High pressure will prevail through Tuesday.
Likely to see 40-45 gusts at ridgetop levels of SE OK and NW AR at the very least and will be flirting with wind advisory levels for much of the area N of US 412 and E of US 75 based on forecast position of low level jet. Strong warm/moist advection in the lower levels may also result in some light rain showers across far southeast OK toward sunrise.
(This evening through Tuesday) A mid-level trough will continue to move across the Plains this evening into tomorrow. A cold front associated with the advancing trough, will move into northwestern parts of Oklahoma starting tomorrow morning. This boundary will have a much cooler airmass in its wake.
236 PM EST Mon Nov 28 2022 (This afternoon through Tuesday) Reinforcing cold front has pushed east of the CWA. High pressure will briefly build in through tomorrow. The high center will begin to shift offshore early tomorrow, with a weak wedge trying to hang onto northern GA. A cold front will begin to push east of the Mississippi River by tomorrow evening and should begin to approach the AL/GA state line by 12Z Wed.
1044 AM EST Mon Nov 28 2022 Dry high pressure will continue to build in from the west today.
With temps cooling behind the cold front, some of the snow production may get into the dendritic growth zone which could further enhance snowfall. Current surface map places cold front across far northwest South Dakota/northeast Wyoming. Cold front moves through the forecast area this morning with breezy northwest winds. Upper trough over western CONUS continues to dig southward today, with trough crossing the plains on Tuesday.
Highs in the upper 30s to low 40s in the higher elevations will be ~2-4 degrees below late November climo. High pressure ridge and associated dry air mass should ensure fair and seasonable weather tonight and Tuesday.
1249 PM EST Mon Nov 28 2022 Dry high pressure will continue to build in from the west today.
A cold front continues its movement into the region this afternoon, bringing a return to below normal temperatures. West winds prevail through the afternoon along the southern extension of an upper trough.
Highs in the upper 30s to low 40s in the higher elevations will be ~2-4 degrees below late November climo. Some partial clearing is more likely from the central ridges eastward to the Susquehanna Valley. Leaned warmer Tuesday night for minT based on increasing WAA pattern downstream of strong cold front pushing through the Ohio Valley.
A storm system passing by today bring gusty winds to the Sierra and Mojave Desert and cooler temperatures areawide Tuesday. Further east, winds have been slow to materialize across the lower desert valleys and around Las Vegas, owing to deeper surface inversions hindering mixing, but suspect that will begin to change later this afternoon as strengthening pressure gradients win out allowing southwesterly breezes to expand in coverage. Late tonight, the surface cold front will slide through the region with winds shifting to the north and cooler temperatures to follow for Tuesday.
102 PM MST Mon Nov 28 2022 Water Vapor shows broad trof over the western/central CONUS, with one upper low over southern BC and another over southern SASK/Manitoba. At the surface, cold front has moved through the entire CWFA. A secondary band of snow is likely to extend along the Pine Ridge and into north central NE and south central SD tonight. The higher probabilities for snow accums with this band are along and south of the NE/SD border, with HREF probabilities of greater than 3 inches in our SD zones generally less than 20% (and NBM probs of greater than 2 inches below 50%).
153 PM MST Mon Nov 28 2022 Localized high pressure over north-central MT will continue to move southeast across our forecast area, bringing with it ever colder temperatures that will keep highs and lows dipping over the next couple days.
An Upper level trough will eject out of the Pacific Northwest and southern Canada today and will move towards the Central and Northern Plains. Lows across central Kansas will be in the low 30s while southeast Kansas will see lows in the upper 40s. ; The surface cold front is expected to move through Tuesday morning with temperatures quickly falling to near or below freezing behind it.
251 PM EST Mon Nov 28 2022 Fair and warm weather expected today and Tuesday as high pressure and drier air build in.
As upper level trof moves through eastern Idaho tonight and strong Canadian front also moves south think most of the snow will be in the southern and southeast mountains and Snake River Plain.
1150 AM EST Mon Nov 28 2022 Fair and warm weather expected today and Tuesday as high pressure and drier air build in.
1157 AM CST Mon Nov 28 2022 (Today and tonight) An upper trough will dig southeast across the Intermountain West today, and into the central Rockies tonight. With south-southwest winds, temperatures will be considerably warmer tonight compared to the previous night. Expect overnight lows to be mostly in the lower 50s.
1254 PM EST Mon Nov 28 2022 Weak high pressure will build into our region tonight into Tuesday.
242 PM EST Mon Nov 28 2022 Have lingering clouds in place across the southern half of the area in the wake of the cold front. Conditions gradually clear out through the evening as high pressure builds in and some drier air filters down. Overnight lows will be in the lower 50s north to mid 60s south. Highs generally in the lower 80s Tuesday, and lows Tuesday night in the 60s.
Water vapor imagery highlights a large-scale and chaotic trough complex over the CONUS. These westerlies paint the northern extent of the mean-layer ridge which has been flattened over the past 24-hours. Not quite as hot as summer, but just as humid with dewpoints in the lower to mid 70s.
For today, an approaching low pressure system will bring a round of strong southwest winds. For tonight, the low pressure system will push a cold front across the area. This looks to be a dry low pressure system, but some light snow/flurries cannot be ruled out in the mountains. Only some minor updates were made to the forecast this morning to slightly increase wind speeds today, as well as introduce a slight chance for light snow with the passage of tonight's cold front. High temperatures on Tuesday will likely be stuck in the 30s and 40s for the upper elevations with 50s in the lower elevations.
Cold upper trough is now settling southward into our area behind last night's surface cold front that brought rain and snow.
Some partial clearing is more likely from the central ridges eastward to the Susquehanna Valley as high clouds also shift to the east. Leaned warmer Tuesday night for minT based on increasing WAA pattern downstream of strong cold front pushing through the Ohio Valley.
The center of a stacked low is analyzed in far west-central Manitoba, with the attendant cold front east of the forecast area.
The associated cold front will cross southwestern and south central Kansas between 6 and 11 am Tuesday from northwest to southeast.
427 PM MST Mon Nov 28 2022 AFTERNOON UPDATE: Upper low over southern Saskatchewan this afternoon is spinning some wrap around moisture into NE Montana. Will keep a chance of light snow and flurries going this evening especially north of the Missouri River and gradually diminish the chance of light snow overnight as this low moves to the east.
) A wintry mix of freezing drizzle and snow expected for Tuesday.
Weak high pressure has settled over the area resulting in clear conditions and light/calm winds. Temperatures are expected to drop to the low to mid 40s overnight. (This afternoon through Tuesday) Reinforcing cold front has pushed east of the CWA. High pressure will briefly build in through tomorrow. The high center will begin to shift offshore early tomorrow, with a weak wedge trying to hang onto northern GA. A cold front will begin to push east of the Mississippi River by tomorrow evening and should begin to approach the AL/GA state line by 12Z Wed.
Some partial clearing is more likely from the central ridges eastward to the Susquehanna Valley as high clouds also shift to the east. Tuesday will be fair with high pressure in control. Leaned warmer Tuesday night for minT based on increasing WAA pattern downstream of strong cold front pushing through the Ohio Valley.
752 PM CST Mon Nov 28 2022 After a cloudy and milder night, warmer and and very windy conditions are expected Tuesday, with showers and a chance for storms on Tuesday night.
In addition, some of the higher terrain areas of southeast Oklahoma could also approach advisory criteria at the ridge tops, so have included those area in the advisory as well.
A system passing through the northern Great Basin will bring us another round of gusty winds Tuesday, along with a few degrees of cooler air filtering in.
631 PM EST Mon Nov 28 2022 High pressure will prevail through Tuesday.
Key west resides in the northwestern quadrant of a high pressure cell near the Bahamas. The high pressure has promoted warm and stable weather conditions throughout the Keys and coastal marine zones tonight due to robust dry air from 850 MB to 500 MB. Later tonight, a ridge over the eastern United States will slowly slide to the northeast to east.
542 PM CST Mon Nov 28 2022 The center of a stacked low is analyzed in far west-central Manitoba, with the attendant cold front east of the forecast area.
We had drier low levels this afternoon as the area remains in the weakening high pressure area sandwiched between a weak front in the FL Straits and weak another front draped across the FL/GA line. Have lingering clouds in place across the southern half of the area in the wake of the cold front. Conditions gradually clear out through the evening as high pressure builds in and some drier air filters down. Overnight lows will be in the lower 50s north to mid 60s south. Highs generally in the lower 80s Tuesday, and lows Tuesday night in the 60s.
406 PM MST Mon Nov 28 2022 Water Vapor shows broad trof over the western/central CONUS, with one upper low over southern BC and another over southern SASK/Manitoba. At the surface, cold front has moved through the entire CWFA. A secondary band of snow is likely to extend along the Pine Ridge and into north central NE and south central SD tonight. The higher probabilities for snow accums with this band are along and south of the NE/SD border, with HREF probabilities of greater than 3 inches in our SD zones generally less than 20% (and NBM probs of greater than 2 inches below 50%).
(This afternoon through Tuesday) Reinforcing cold front has pushed east of the CWA. High pressure will briefly build in through tomorrow. The high center will begin to shift offshore early tomorrow, with a weak wedge trying to hang onto northern GA. A cold front will begin to push east of the Mississippi River by tomorrow evening and should begin to approach the AL/GA state line by 12Z Wed.
A passing low pressure system will continue to bring strong winds to northern Arizona from tonight into Tuesday.
529 PM CST Mon Nov 28 2022 After a cloudy and milder night, warmer and and very windy conditions are expected Tuesday, with showers and a chance for storms on Tuesday night.
542 PM CST Mon Nov 28 2022 (This evening through Tuesday) A mid-level trough will continue to move across the Plains this evening into tomorrow. A cold front associated with the advancing trough, will move into northwestern parts of Oklahoma starting tomorrow morning. This boundary will have a much cooler airmass in its wake.
454 PM CST Mon Nov 28 2022 (This afternoon through Tuesday night) We'll be warm and windy today and tomorrow under zonal flow aloft with strong southerly surface flow thanks to a deepening lee trough in CO. A large upper level trough will tighten the gradient over the region and a strong jetmax will set up over the higher terrain out west today and tomorrow. The higher terrain could see gusts of 75-85 mph and those in the Plains and Foothills surrounding the higher terrain will see gusts up to 45 mph. The strong winds will die out Tuesday night as a cold front associated with the aforementioned trough approaches the area, bringing significantly colder temperatures to the region. Have gone ahead and slightly lowered temperatures below NBM for Tuesday night given models have been trending cooler with the airmass behind the front.
1130 PM CST Mon Nov 28 2022 After a cloudy and milder night, warmer and and very windy conditions are expected Tuesday, with showers and a chance for storms on Tuesday night.
1009 PM EST Mon Nov 28 2022 High pressure will prevail through Tuesday.
The cold front that moved through the area early Monday morning has pushed south and east of the area. This has allowed for some cooler and drier air to filter into the region today.
116 AM EST Tue Nov 29 2022 Fair and warm weather expected Tuesday as high pressure and drier air build in.
Temperatures tonight will be slightly cooler than last night's, with overnight lows in the mid to upper 50s across the interior from northern Okeechobee county northward, and low to mid 60s along the coast and across the Treasure Coast and southern Okeechobee counties.
1021 PM CST Mon Nov 28 2022 (This afternoon through Tuesday night) We'll be warm and windy today and tomorrow under zonal flow aloft with strong southerly surface flow thanks to a deepening lee trough in CO. A large upper level trough will tighten the gradient over the region and a strong jetmax will set up over the higher terrain out west today and tomorrow. The higher terrain could see gusts of 75-85 mph and those in the Plains and Foothills surrounding the higher terrain will see gusts up to 45 mph. The strong winds will die out Tuesday night as a cold front associated with the aforementioned trough approaches the area, bringing significantly colder temperatures to the region. Have gone ahead and slightly lowered temperatures below NBM for Tuesday night given models have been trending cooler with the airmass behind the front.
Winds should swing southwest and then west today as an upper level trough passes mainly north of the area. Cold front will make progress southward today, but not reaching the northern Big Country until after max heating and then moving south across the rest of the area overnight.
An upper low will continue to produce scattered snow showers through mid morning.
1000 PM MST Mon Nov 28 2022 Water Vapor shows broad trof over the western/central CONUS, with one upper low over southern BC and another over southern SASK/Manitoba. At the surface, cold front has moved through the entire CWFA. A secondary band of snow is likely to extend along the Pine Ridge and into north central NE and south central SD tonight. The higher probabilities for snow accums with this band are along and south of the NE/SD border, with HREF probabilities of greater than 3 inches in our SD zones generally less than 20% (and NBM probs of greater than 2 inches below 50%).
High pressure that is over the Southeast gradually shifts east as an upper level trough digs down across the Rockies. Temperatures currently as of 03z are in the lower 40s may drop a degree or two overnight, but given dewpoint depressions between 1 and 4 degrees, not expecting much more cooling by daybreak.
1100 PM CST Mon Nov 28 2022 (This evening through Tuesday) A mid-level trough will continue to move across the Plains this evening into tomorrow. A cold front associated with the advancing trough, will move into northwestern parts of Oklahoma starting tomorrow morning. This boundary will have a much cooler airmass in its wake.
249 AM CST Tue Nov 29 2022 An upper level trough located over the Central Great Basin and Central Rockies will quickly push east today into the Central Plains. This will send a cold front through the area and temperatures will fall into the 30s behind the front.
330 AM EST Tue Nov 29 2022 Dry conditions are expected today with high pressure passing through.
1234 AM EST Tue Nov 29 2022 High pressure will prevail through Tuesday.
(Today and tonight) Deeper and drier southwest flow was found overspreading the region early this morning in the base of a broad trough that should merely graze the South Plains by this afternoon. This is especially the case across our NW zones where winds should hold at sub-advisory levels for much of the late morning and early afternoon before the gradient flow tapers behind the trough. By sunset, a strong cold front (presently in extreme SE CO as of 2 AM) should be entering Childress and Hall counties following a typical slowdown as it encounters deeper boundary layer mixing/resistance over the TX PH this afternoon.
The result will be period of windy conditions continuing through the morning especially across far NE OK into far NW AR and across the higher ridgetops of SE OK. Correspondingly, moisture advection continues in advance of the cold front evident by rapidly expanding low clouds and scattered showers may develop across far SE OK into west central AR later this morning. Cold frontal timing continues a slightly faster trend with the front into NE OK around noon and sweeping through western AR by early evening.
- A period of light freezing rain possible south mainly of Interstate 80 early this morning. Expect most locations will see total accumulations generally in the 2 to 4 inch range with the higher amounts in the panhandle and also across northeast Nebraska. While amounts south of Interstate 80 will be on the lower end of the forecast, a brief period of freezing rain is possible at the onset of precipitation possibly resulting in a light glaze of ice and slick conditions. Cold high pressure builds down from Canada tonight with lows ranging from the single digits east of highway 83 to around zero from the sandhills into the panhandle, and wind gusts of 15 to 25 mph will create wind chills of 5 to 15 below zero.
Winds should swing southwest and then west today as an upper level trough passes mainly north of the area. Cold front will make progress southward today, but not reaching the northern Big Country until after max heating and then moving south across the rest of the area overnight. Gusty north winds and good cold advection will make for a much colder night with lows falling into the low to mid 30s Wednesday morning.
Lows tonight will reflect breath of strong cold frontal passage with lows in upper 30s Land Between the Lakes Region to upper 40s to around 50 southeastern portions. High pressure building out of the central plains along with dry quasi zonal flow aloft will provide dry and seasonally cool conditions on Wednesday.
A sharp pressure gradient around this low will likely force advisory level wind gusts this morning and into the mid day hours. 1 NBM 50th percentile was suggesting gusts reaching or slightly exceeding 45 mph across far southwest Missouri, and along the Highway 60 corridor into Wright and Texas counties. These higher elevations roughly along the Highway 60 corridor could see the highest gusts today, along with portions of the Osage plains. A fast moving and powerful cold front will push through the CWA this afternoon, potentially forcing a couple of storms over the eastern Ozarks late this afternoon or evening. Cold air can be expected tonight with lows falling into the low to mid 20s.
WV imagery shows an upper trough digging through the Rockies this AM, resulting in southwest flow aloft over West Texas and Southeast New Mexico. Downslope warming will yield unseasonably warm afternoon temperatures, and so we've stayed on the warmer side of forecast highs. Unfortunately, this all comes to an end tonight, when a dry cold front backdoors the area.
A mid level low pressure system moving through the Northern Rockies has been producing areas of snow overnight.
This will help push a strong cold front through Oklahoma and northern Texas today.
349 AM MST Tue Nov 29 2022 Current surface map places low pressure across central Kansas with high across central Montana into northeast Wyoming/far western South Dakota.
550 AM CST Tue Nov 29 2022 An upper level trough located over the Central Great Basin and Central Rockies will quickly push east today into the Central Plains. This will send a cold front through the area and temperatures will fall into the 30s behind the front.
357 AM CST Tue Nov 29 2022 Key Messages: * A wintry mix of freezing drizzle and snow will impact the forecast area today.
Cool and dry through mid week with frost and freezing temperatures possible.
527 AM CST Tue Nov 29 2022 Stacked upper low will continue to spin over southern Manitoba today, though slowly moving east.
A passing low pressure system will continue to bring strong winds to northern Arizona through the early afternoon. In addition, expect noticeably cooler temperatures, especially Wednesday morning when the forecast calls for lows in the teens and 20s for areas along and north of the Mogollon Rim.
- Slight chance for drizzle/freezing drizzle and/or non-accumulating snow across northwest Missouri.
We'll start with a ridge overhead to open the long range period, though with a broad expanse of high clouds already making their way into the Northern Plains as we move to more of a zonal west- southwest flow regime. Lee low development along the High Plains will increase low level flow over the eastern Dakotas, resulting in windy conditions particularly for the Coteau, but also help to erode some of the colder air in place.
236 AM MST Tue Nov 29 2022 A tight little trough feature within the broader cyclonic flow aloft will track southeast through western Montana and across south central Montana and north central Wyoming today. Skies will be mostly clear east with increasing high clouds west tonight into Wednesday as high pressure begins to build over the region. Some light orographic snow showers are possible over the western slopes of the high country late tonight through Wednesday night.
207 AM MST Tue Nov 29 2022 Current surface map places low pressure across central Kansas with high across central Montana into northeast Wyoming/far western South Dakota.
Cold air lingers across the region on Wednesday as high pressure slides through the northern plains.