Aikyam-Lab/Synoptic-Bench huggingface dataset:
Forecast Highlights: -A weekend cold front brings in a frigid air mass and wind chills below zero. Forecast Discussion: At 09Z today, water vapor imagery shows a trough axis associated with a system centered over northern MN moving over northeastern KS. Increased cloud cover and perhaps some flurries have been associated with the trough, which is quickly moving east very early today.
A surge of sfc-850 mb warm advection is expected into the early afternoon with sfc temps warming into the lower to middle 30s, followed by the cold front with falling temps late. Sswly winds will gust to 30 to 35 mph ahead of the cold front with wly winds after fropa then weakening.
Warmer both today and Saturday with some 50s possible on Saturday.
At the surface, there will be a strong pressure gradient between a potent storm system well to the north and high pressure along the Gulf Coast.
Expect cloud cover to thicken today due to the strengthening isentropic ascent, leaving highs on the cooler side once again. Highs on Saturday will be a bit warmer, with temperatures in the 70s.
519 AM CST Fri Jan 27 2023 An upper trough will move out of the Northern Plains today and into the Upper Mississippi Valley. This will send a cold front down the Plains with well below normal temperatures behind it.
Light accumulating snowfall is most likely in the higher elevations of northern Elko county. For today, high pressure will remain offshore in the east Pacific which will give northern and central Nevada a northerly flow regime. Some of the higher elevation locations in eastern Elko county could see a trace, with about one to three inches in the Ruby Mountains and East Humboldt range.
850 AM CST Fri Jan 27 2023 High pressure centered across southeast Louisiana today will maintain light southeasterly flow through the day.
With high pressure dominating our weather today, clouds will stay limited and daytime highs will climb into the 50s as southwesterly winds gust up to 20kts.
422 AM EST Fri Jan 27 2023 Gusty southerly winds developing on the backside of high pressure will bring warmer air into the region today. A few rain and snow showers will be possible this afternoon into this evening ahead of a weak cold front washing out over northern Ohio tonight.
628 AM EST Fri Jan 27 2023 Gusty southerly winds developing on the backside of high pressure will bring warmer air into the region today. A few rain and snow showers will be possible this afternoon into this evening ahead of a weak cold front washing out over northern Ohio tonight.
Satellite imagery continues to show northwest flow and widespread cloud cover over our area with a trough moving through this northwest flow. The trough is currently located over northern Idaho. Models continue to show moderate winds over the area, especially over ridgetops and our southwestern areas where gusts of 40 to 45 mph are likely this afternoon.
Troughing and north to northeast winds will persist throughout the rest of today and Saturday. This will result in one more cold night with the Nature Coast getting into the 30 with Levy County getting close to freezing. Temperatures will be warming up quickly tomorrow as troughing moves away and ridging takes hold.
Issued by National Weather Service Columbia SC 103 PM EST Fri Jan 27 2023 Dry high pressure will persist over the region today through Saturday.
Saturday looks to be remarkably similar to today, bit just a little bit warmer and a little less breezy with stronger moisture advection by tomorrow night.
105 PM EST Fri Jan 27 2023 High pressure will persist through most of the weekend. Temperatures will peak around 5 degrees below late January normals, with highs generally in the lower to mid 50s. Given several hours of radiational cooling, the low temperature forecast will favor the cooler members of guidance. Low temperatures are expected to fall into the upper 20s inland to around freezing along the coast. Saturday: Zonal flow will prevail aloft while high pressure centered over the southeastern states dominates at the surface. As the day progresses the high pressure will shift offshore, eventually moving into the Atlantic waters by Saturday night. Mostly sunny conditions in the morning hours will give way to cloudy by nightfall as low level moisture begins to increase ahead of an approaching cold front.
The lowest of lows tonight will be inland SE GA, where areas will see temperatures fall to 31 degrees.
229 PM CST Fri Jan 27 2023 A weak cold front will sink south into northern portions of the forecast area tonight, then stall out just north of the I-70 corridor. By Saturday afternoon, precipitation chances will be on the increase as a cold front begins to move through the region. Moisture will be rather limited and latest forecast soundings indicate that the dendritic growth zone will remain unsaturated for most locations, thus the light rain will transition to a mix of light freezing rain/drizzle as colder air filters in Saturday night.
1128 AM CST Fri Jan 27 2023 Surface analysis at 0800 UTC shows an area of low pressure near the US-Canadian border, with a cold front draped to its south across the Upper Mississippi Valley. Further south, chances of rain showers increase with the trailing cold frontal passage Saturday night. As the low-level cold air comes in behind the front, the rain may mix in with or briefly changeover to snow or freezing rain/drizzle before ending. The reason that freezing drizzle/rain is possible is that some model guidance suggests a largely unsaturated dendritic growth zone.
High pressure off the east coast will allow brief warm up. Discussion: 500 MB troughing over the Rockies will increase southerly flow into the southern Plains where precip area will develop Saturday, well west of our area.
Meanwhile, the lower elevations will see the arctic air arrive later Saturday morning and afternoon with a round of light snow and cold temperatures, but certainly lesser impact than anticipated in western Montana.
The abundant sunshine and breezy south winds will result in afternoon highs in the low 60s across most locations. The south winds will also bring a surge of moisture and cloudiness late tonight into Saturday morning, keeping our lows in the lower to mid 40s. The overcast skies and rain/drizzle will keep daytime highs in the low to mid 60s over the eastern half of the region and mid/upper 60s across the western half of our CWA.
1124 AM CST Fri Jan 27 2023 (Today through Saturday) Coastal trough moves north into the area today bringing a slight chance for showers today. However, by the evening hours, as the trough pushes northeast, some of the drier air erodes which will allow for the highest chance for rain to occur for the lower RGV/coastal areas. Even though Saturday is forecast to be mostly cloudy, temperatures are expected to reach the lower 80s which is warmer than it's been in awhile.
WAA will allow for the ridges and mountaintops to be a little warmer. High pressure will continue to be present across the south for Saturday with southwesterly flow aloft favoring WAA through the day. This will result in temperatures climbing into the low to mid-50s for tomorrow. The southern piece of energy is progged to track into the Ohio River Valley along the cold front.
1154 AM CST Fri Jan 27 2023 An upper trough will move out of the Northern Plains today and into the Upper Mississippi Valley. This will send a cold front down the Plains with well below normal temperatures behind it.
Issued by National Weather Service Jackson KY 1046 AM EST Fri Jan 27 2023 Gusty southerly winds developing on the backside of high pressure will bring warmer air into the region today. A few rain and snow showers will be possible this afternoon into this evening ahead of a weak cold front washing out over northern Ohio tonight.
There continues to be concern that if the more northern NAM is correct that a corridor containing a mix of freezing rain and sleet could sneak as far north of I-96, with mainly rain south of there.
Issued by National Weather Service Jackson KY 104 PM EST Fri Jan 27 2023 Gusty southerly winds developing on the backside of high pressure will bring warmer air into the region today. A few rain and snow showers will be possible this afternoon into this evening ahead of a weak cold front washing out over northern Ohio tonight.
1033 AM CST Fri Jan 27 2023 Allowed the Wind Advisory to expire earlier this morning as winds have fallen below criteria for all but one or two sites along the Coteau ridge line. Temperatures are falling below freezing again. Arctic high pressure will build in from the northwest on Saturday, pushing the precip south with the front edge of the arctic front. Will start under an Arctic airmass with the center of a 1040mb high over northern Montana and a ridge extending east into the eastern Dakotas and western Minnesota.
1249 PM EST Fri Jan 27 2023 High pressure will build into the forecast area and remain in control of the region through Saturday.
340 PM EST Fri Jan 27 2023 High pressure will persist through Saturday.
1035 AM MST Fri Jan 27 2023 Current surface analysis shows low pressure along the MN/Canadian border, with warm front well east of the forecast area and arctic front from central ND to northeast MT. Upper level analysis shows broad trough covering the central and eastern US, with ridge remaining off the west coast.
(Tonight) High pressure will drift eastward overnight but remain in control of the forecast. These breezy southwesterly winds will slack at sunset and with clear skies in place, temps will fall into the lower 30s.
139 PM EST Fri Jan 27 2023 High pressure will build into the forecast area and remain in control of the region through Saturday.
At the surface, the cold front is draped from NW SD to south central SD.
314 PM EST Fri Jan 27 2023 An area of low pressure will pass well to our north tonight as high pressure builds to our south. High pressure will progress offshore tomorrow night.
The increased southwesterly flow both aloft and at the surface brings warmer temperatures as well, with highs ranging from the upper 50s over northwestern areas to the upper 60s over the southern Rolling Plains.
Allowed the Wind Advisory to expire earlier this morning as winds have fallen below criteria for all but one or two sites along the Coteau ridge line. Temperatures are falling below freezing again. Arctic high pressure will build in from the northwest on Saturday, pushing the precip south with the front edge of the arctic front. Will start under an Arctic airmass with the center of a 1040mb high over northern Montana and a ridge extending east into the eastern Dakotas and western Minnesota.
Upper troughing has passed through the region, with light shower activity northeast of the Evansville Tri-State. Low pressure is located just north of Lake Superior and high pressure at the Gulf Coast. The low crosses into Quebec tomorrow, trailing a front to the southwest towards low pressure in the Central Plains.
(Tonight through Saturday night) Coastal trough moves north over the area and loses definition tonight, maintaining low accumulation rain chances, mainly along the coast. Even though Saturday is forecast to be mostly cloudy, temps should reach the lower 80s for many locations.
Temperatures continued to warm into the lower 20s north to the upper 20s to lower 30s across northeast Wisconsin.
1138 AM CST Fri Jan 27 2023 (Today and tonight) SIGWX NIL today as an inverted trough stretching from northern Baja California to the Red River Valley continues to sag southward with a broad fetch of northwesterly flow building in behind over the CWA. However, locations where the snowpack remains present will experience much shallower PBL mixing, yielding much cooler temperatures compared to locales in the immediate vicinity without snow. , trending cooler and more moist) to best capture these highly localized mesoscale effects the snowpack will cause on the sensible heat flux budget with the expectation of significant sublimation and melting of the snowpack occurring due to the southwesterly breeze. Surface winds will remain breezy overnight tonight as the lee cyclone drifts into west-central Kansas, resulting in a slight uptick in low temperatures on Saturday morning.
1017 AM EST Fri Jan 27 2023 High pressure will persist through most of the weekend. Given several hours of radiational cooling, the low temperature forecast will favor the cooler members of guidance. Low temperatures are expected to fall into the upper 20s inland to around freezing along the coast. Saturday: Zonal flow will prevail aloft while high pressure centered over the southeastern states dominates at the surface. As the day progresses the high pressure will shift offshore, eventually moving into the Atlantic waters by Saturday night. Mostly sunny conditions in the morning hours will give way to cloudy by nightfall as low level moisture begins to increase ahead of an approaching cold front.
NNW winds will gust 15-20 mph at times through early afternoon, then weaken into the late afternoon as the ridge builds overhead. For the coast, low temps in the low/mid 40s are expected as shallow NNE flow develops.
In addition, southerly winds will advect warmer temperatures to the region with afternoon highs in the mid 50s.
An upper trough will continue to support precipitation as it moves southeastward through the region today. Gusty winds will accompany the system, becoming windy in the higher elevations during the afternoon.
Ample stratiform cloud cover in the Lower and Middle Keys coupled with decent cold advection from low-level mean north to northeast winds has kept temperatures from getting out of the mid to upper 60s.
642 PM EST Fri Jan 27 2023 High pressure will build into the forecast area and remain in control of the region through Saturday.
Weak cold front analyzed on 20z/2pm surface chart from Lake Superior to eastern Iowa will sag southward and stall across the northern KILX CWA tonight. Despite presence of boundary, dry weather is expected until upper forcing associated with a short- wave trough currently over Wyoming approaches from the west toward dawn. to the lower 50s south of I-70.
(Tomorrow through Friday) South to southwesterly winds increase Saturday with gusts of 25 to near 40 mph ahead of a cold front forecast to enter Northeast Oklahoma Saturday evening. Chances start out across mainly Southeast Oklahoma Saturday morning and then spread across mainly far Eastern Oklahoma and northwest Arkansas into Saturday night ahead of the cold front.
A warm front will be pushing inland from the Matagorda Bay area about that time and anticipate that we'll see some areas of drizzle/light rain develop into the morning, with better chances generally west I-45 and north of I-10. Ceilings should slowly lift as the warm front passes during the day, though confidence in timing isn't very high.
Expect overnight lows in the lower 40s for most locations. The development of a lee trough across the Texas Panhandle and northeast New Mexico will result in southwest winds across the forecast area increasing to 12 to 20 mph, with higher gusts, by late morning.
638 PM EST Fri Jan 27 2023 Dry high pressure will persist over the region tonight through Saturday.
* Key Messages: * The main concerns in this forecast are possible snow and freezing drizzle mainly for tonight and Saturday. An arctic cold front will push into the area during the day on Saturday with gusty north winds. Temperatures behind the front will plummet with the high temperature on Saturday occurring in the morning. Locations along and north of I-80 could see snow amounts of a trace to one inch with the highest amounts expected in Valley and Greeley Counties.
Also, tweaked high temperatures up a couple of degrees for Saturday as mostly clear skies and more onshore NE to ENE flow around high pressure allow temperatures to rebound higher compared to today. Highs will warm into the lower 60s over inland SE GA and the mid 60s over inland NE FL with readings near 60 along the coast and upper 60s over north central FL.
304 PM CST Fri Jan 27 2023 Key Messages: - Warmer temperatures today and Saturday with afternoon highs in the 40s and 50s.
In northern NV enough moisture will be present to cause isolated light snow showers mainly in the high elevations. Snow amounts in northern Elko county are one to three inches, with the highest amounts in the Jarbidge mountains of 3 to 9 inches. Southward of this the high elevation will see only a trace to a half inch of snowfall.
937 PM EST Fri Jan 27 2023 High pressure will build into the forecast area and remain in control of the region through Saturday.
, Blakely, TLH, CTY) are poised to see readings in the upper 20s, while most coastal spots potentially fall short of the freezing mark.
5" per hour rates for a few hours, will lean towards the higher amounts between the Missouri River and I-90, along an axis from about Platte to Beresford to Spencer IA. The EC Ensemble and GEFS continue to point towards roughly south central SD a bit east down the Missouri River has the highest probability of something closer to 10 inches of snow.
841 PM CST Fri Jan 27 2023 GOES-16 Satellite trends and 00Z upper air analysis shows a broad upper level trough axis extending across much of the Continental United States with mid-level flow nearly zonal across the Lower Mississippi Valley. Latest short term model guidance including the 00Z NAM and Convective Allowing Models indicate the potential for showers should hold off until around mid-afternoon on Saturday when a slow moving cold front begins to move towards western sections of the Middle and Lower Mississippi Valleys.
855 PM EST Fri Jan 27 2023 An area of low pressure will pass well to our north tonight as high pressure builds to our south. High pressure will progress offshore tomorrow night.
529 PM CST Fri Jan 27 2023 (Tonight through Saturday night) Coastal trough moves north over the area and loses definition tonight, maintaining low accumulation rain chances, mainly along the coast. Even though Saturday is forecast to be mostly cloudy, temps should reach the lower 80s for many locations.
550 PM EST Fri Jan 27 2023 High pressure will persist through Saturday.
the Arctic cold front quickly moves south through the area through early afternoon and remains over the area through the night. Along the front, fog/freezing fog will be possible. High temperatures are currently forecast to range from the lower to middle 20s along the CO/KS border to the lower 30s from Kit Carson to Tribune and Leoti.
Troughing will slide across Western Washington on Saturday for another round of precipitation.
Northern Levy county may have spots that touch freezing, but not expecting widespread durations. N/NE winds will turn to the E/SE over the next couple of days as high pressure shifts east.
523 PM CST Fri Jan 27 2023 A weak cold front will sink south into northern portions of the forecast area tonight, then stall out just north of the I-70 corridor. By Saturday afternoon, precipitation chances will be on the increase as a cold front begins to move through the region. Moisture will be rather limited and latest forecast soundings indicate that the dendritic growth zone will remain unsaturated for most locations, thus the light rain will transition to a mix of light freezing rain/drizzle as colder air filters in Saturday night.
604 PM CST Fri Jan 27 2023 (Tonight) High pressure will drift eastward overnight but remain in control of the forecast. These breezy southwesterly winds will slack at sunset and with clear skies in place, temps will fall into the lower 30s.
836 PM EST Fri Jan 27 2023 High pressure continues across the CWA tonight. Saturday looks to be remarkably similar to today, bit just a little bit warmer and a little less breezy with stronger moisture advection by tomorrow night.
935 PM EST Fri Jan 27 2023 Dry high pressure will persist over the region tonight through Saturday.
The evening upper air data showed dry air throughout the atmospheric column with brisk south southwest winds in the low levels. Overnight, high pressure will be centered over the southeast states. Lows tonight will not be as cold as last night- running 5 to 10 degrees warmer. and temperatures are most definitely warmer.
343 PM CST Fri Jan 27 2023 * Key Messages: * The main concerns in this forecast are possible snow and freezing drizzle mainly for tonight and Saturday. An arctic cold front will push into the area during the day on Saturday with gusty north winds. Temperatures behind the front will plummet with the high temperature on Saturday occurring in the morning. Locations along and north of I-80 could see snow amounts of a trace to one inch with the highest amounts expected in Valley and Greeley Counties.
(Rest of tonight) Seasonably strong west-northwest flow aloft will continue across the region overnight, in the wake of a sheared mid-level longwave trough that crossed the region earlier this morning. Although not explicitly noted in the grids, conditions may become favorable for the development of patchy/light freezing fog in the sheltered valleys of northeast AL/southern TN.
217 AM CST Sat Jan 28 2023 Key Messages: - A strong cold front moves through the area today with much colder air moving into the region tonight.
(Today and tonight) The CWA remains beneath the southern periphery of a full-latitude trough positioned across the U. Temperatures will trend a few degrees warmer today compared to yesterday from increasing adiabatic compression as the weak surface cyclone drifts southward into the Texas Panhandle, and the presence of high-level cirrus bands associated with a strengthening 300 mb jet streak should not impede diabatic heating effects.
(Today and tonight) A 500mb trough across the western United States this morning will broaden somewhat across the western and central U.
1048 PM CST Fri Jan 27 2023 (Tonight through Saturday night) Coastal trough moves north over the area and loses definition tonight, maintaining low accumulation rain chances, mainly along the coast. Even though Saturday is forecast to be mostly cloudy, temps should reach the lower 80s for many locations.
Temperatures will be falling through the day, with the high likely very early this morning in the teens.
1124 PM CST Fri Jan 27 2023 The current forecast through the short term remains mostly unchanged, but did make a few adjustments to temperatures and dew points in the eastern half of the forecast area where the effects of high pressure will linger into the day tomorrow. Min temps in that area were nudged a few degrees cooler tonight, as winds are beginning to decouple and afternoon dew points indicated dry air was in place. Increasing cloud cover and little better pressure gradient in the western half of the area should keep temps from falling as drastically tonight, and sites should stay above freezing.
Upper ridging in the N Carib begins to build Nward this weekend through early to mid week. By late week, the upper ridging moves SEward as low latitude upper trough swings from S TX through the Gulf pushing surface frontal system through the region Fri but limited moisture and weak dynamics to only produce a chance of rain mainly over the Nature Coast. High pressure over the region to move into the W Atlantic through the weekend with NE winds becoming SE as seas continue to slowly subside. Weak high pressure to remain stretched across the FL Peninsula and E Gulf waters as a frontal boundary stalls in the N Gulf for mainly benign marine conditions through mid week.
Cold front is expected to enter northwest Oklahoma late this afternoon and push south through the area Saturday night.
Quiet and mild weather today with warmer temperatures.
The current forecast through the short term remains mostly unchanged, but did make a few adjustments to temperatures and dew points in the eastern half of the forecast area where the effects of high pressure will linger into the day tomorrow. Min temps in that area were nudged a few degrees cooler tonight, as winds are beginning to decouple and afternoon dew points indicated dry air was in place. Increasing cloud cover and little better pressure gradient in the western half of the area should keep temps from falling as drastically tonight, and sites should stay above freezing.