Aikyam-Lab/Synoptic-Bench huggingface dataset:
This will bring a cold front across the forecast area. Otherwise, high pressure will build into the region today with mainly dry weather although a moist atmosphere will keep skies partly to mostly cloudy. Another high pressure system builds into the forecast area Sunday afternoon and moves to the east Sunday Night.
Slightly cooler temperatures can be anticipated behind the weak front with highs Sunday about five degrees cooler, but still near average for this time of year.
In the upper levels there is a ridge just off the Atlantic Coast of Florida. A trough is over the Central U. At the surface a low over Quebec has a cold front extending all the way to Texas. Low level moisture is increasing and POPs will increase significantly tonight as the cold front and Gulf Low move closer.
This morning the first cold front comes through, that is really weak and will not cool us down much or give us much rainfall, maybe a few sprinkles. A stronger cold front comes through Sunday morning, there could be some flurries with that front.
Gusty west winds in the wake of the cold front will persist through mid afternoon. The sunshine, loss of linger snow cover and 925H temps around zero to 2 should allow daytime temps to recover into the low to mid 40s despite breezy west winds.
221 PM MST Sat Jan 27 2018 Latest upper analysis showing a trough dropping southward across the eastern Dakota, producing some scattered flurries over the eastern part of the forecast area this afternoon. Cool high pressure is moving in at the surface on breezy to windy northwest winds. The cooler air moving into the region will result in lows in the single digits and teens above zero tonight with highs in the 20s to lower 30s on Sunday.
This short wave will have an attendant cold front that will sweep through the Iowa late tonight into early Sunday and will bring much colder temperatures to the state, with highs in the upper teens to near 20 north and in the low to mid 30s south. While temperatures may be initially above freezing, evaporative cooling and the saturation process will drag temperatures back toward the wet bulb temperatures and below freezing, therefore, mostly snow is expected.
324 PM CST Sat Jan 27 2018 High pressure is building into the region this afternoon, bringing mostly sunny skies and temperatures still quite mild with the colder air hanging back to the NW. Quiet weather as cooler air moving into the region, and the northwesterly winds will drop tomorrows high temps into the 40s. The weak wave is running over a high pressure ridge at the surface. The mid level trough of cold air drops into the Midwest Sunday night.
1243 PM EST Sat Jan 27 2018 Rain through tonight with a crossing cold front. Rain chances continue Sunday south of Interstate 68, with dry weather expected under high pressure elsewhere. The front is progged to slide E of the area by Sunday morning, though a developing wave along the front in response to an approaching, deepening upper trough should slow its progression.
316 PM CST Sat Jan 27 2018 An upper level trough is currently moving through the midwest, as ridging increases over the west coast. This disturbance and associated cold front could bring a quick shot of light snow to the area tomorrow, before exiting southeast Nebraska Sunday evening. Clouds will increase and winds will begin to swing around to the north tonight with the passage of this front, ushering cooler air into the region for Sunday. Highs will range from the mid 30s in far southeast Nebraska and southwest Iowa, to the low 20s over the previously snow-covered parts of northeast Nebraska.
250 PM EST Sat Jan 27 2018 Showers continue to spread through northwest Pennsylvania as a cold front will slide through the area tonight into early Sunday.
1139 AM CST Sat Jan 27 2018 Cold front making its way through Central IL this morning and winds are coming around to more WNW in its wake. Only slightly cooler air in place behind it, resulting in another mild day overall for the region. Keeping the high temperatures in the lower 50s for today and the precip is clearing to the southeast. 09z/3am surface analysis shows cold front approaching the Illinois River.
250 PM EST Sat Jan 27 2018 A cold front will spread rain across the area tonight through Sunday night.
Elsewhere, northwest flow prevails overhead and upper-level ridging is occurring over the west coast. Upstream, another disturbance on the periphery of the upper-level ridge near southern British Columbia/WA late today will move eastward tonight into the Central High Plains by early tomorrow morning. Highs tomorrow are forecast in the lower 40s across extreme southwest NEB to the lower 20s across far north central NEB. The pattern early Sunday night will feature an upper-level ridge over the western CONUS and downstream a trough across the eastern half of the CONUS while northwest flow prevails overhead.
1217 PM CST Sat Jan 27 2018 For the ArkLaTex, a cold front extends from KTYR to near KTXK and KHOT. The cold front will only slowly work across the brunt of the area during the overnight hours slowly lifting cigs and vsby. /issued 1008 AM CST Sat Jan 27 2018/ Cold front continues to make slow but steady progress into our region this morning.
An upper trough approaching from the west and a upper ridge over the Bahamas are providing strong southwest flow aloft. High pressure off the eastern seaboard ridges into the east Gulf of Mexico with a easing gradient. A cold front approaching from the west will begin to shift winds Sun and bring some showers and a few thunderstorms.
Rodriguez 233 AM CST As an upper level trough settles in across the region, CAA will be the trend at the start of the period.
1008 AM CST Sat Jan 27 2018 Cold front continues to make slow but steady progress into our region this morning. /issued 546 AM CST Sat Jan 27 2018/ A cold front will move across the region today bringing widespread showers to area terminals along with MVFR/IFR conditions.
Moisture will continue to increase at all levels as an upper level trough and associated surface cold front approach from the west. Highs will be in the lower to mid 70s.
Added a mention of light snow this morning to northwest North Dakota per observed trends through 1330 UTC in association with the compact upper level low/vort lobe observed on GOESEast imagery. Secondary cold front continues to drop through the area with temperatures dropping in its wake. Upper level analysis places broad trough dropping through the Great Plains. Weak wave rotating through the trough is producing a little light snow over southwestern portions of North Dakota. A compact short wave dropping through the trough will push through the area later today. For tonight, another weaker wave grazes far southwestern portions of the area as modestly warmer air tries to nudge in, bringing some snow chances. Warming trend then develops to start the week as ridge quickly builds in and passes over the area.
448 PM EST Sat Jan 27 2018 A trof will cross the region tonight, with a cold front crossing Sunday.
/Issued 416 AM CST Sat Jan 27 2018/ A weak cold front that move through the Panhandles last night will keep temperatures a bit cooler today. Highs expected to be in the low to mid 50s, but winds should be fairly light, so it may not feel that cool. Tomorrow will be very similar with temperatures reaching the low 60s. Upper level trough will continue to amplify across the central plains, keeping the Panhandle in the transition area between the warm and cold air.
Cloudy skies continue this afternoon as a cold front is crossing the Mississippi Valley and lower Ohio River Valley.
Satellite pictures this morning shows the downsloping affect in northeast sections with some breaks in the clouds and slightly warmer temperatures then over southeast Tennessee.
North winds (5 to 10 knots) can be expected to develop behind a cold front that moves through the area this afternoon and off the coast this evening. We will continue to see generally scattered showers and isolated thunderstorms throughout the day ahead of a cold front which has moved through Waco and should reach our NW areas early this afternoon.
Latest surface analysis showing a cold front laying across central Montana this morning. Water vapor imagery shows a low pressure system moving into the Pacific Northwest this morning that models forecast will track along that front as time progresses. Winds on the increase today as low pressure across Montana increases gradients over southeast Wyoming.
939 AM MST Sat Jan 27 2018 The Left Coast ridge will be establishing itself again over the nest 24 to 36 hours which will be keeping us in northwest flow. Warmer temperatures also mean the 25:1 ratios should fall back to 20:1 or less tonight through Sunday morning as the warm advection pushes the dendritic layer higher above the terrain. Snow amounts should be higher closer to the Wyoming border and we could see some 6 to 8 inches over the higher divide mountains above 10kft. The warmer air moving in should strengthen the valley inversions though we will have plenty of sunshine today and again tomorrow.
1208 PM EST Sat Jan 27 2018 A cold front will move east across the area late today and early tonight. High pressure will slide quickly across the Ohio Valley on Sunday ahead of a second cold front that will drop across the lower Great Lakes Sunday night.
1147 AM CST Sat Jan 27 2018 A cold front will drop through the area today, and could see a few flurries through the Highway 14 corridor during the early part of the day with saturation in the dendritic layer. Temperatures will run a little cooler than yesterday, with highs mid 30s to lower 40s.
246 PM CST Sat Jan 27 2018 The cold front has made it past College Station and is near Brenham. The upper level trough axis moves east of the area on Sun afternoon and southeast Texas will be under the influence of NW flow aloft through mid-week.
Behind it a nice drizzle has developed and will likely linger until the cold front passes.
329 PM CST Sat Jan 27 2018 A broad upper trough was noted over the central and northern plains per the 20Z water vapor imagery. At the surface, a weak high was centered over the TX panhandle while a cold front was seen moving south through the Dakotas. Winds should remain light as the weak ridging remains over the central plains. Forecast soundings suggest precip initially may be rain before diurnal cooling and low level cold air advection cool the column below freezing.
327 PM CST Sat Jan 27 2018 The cold front continues to sag slowly southward late this afternoon, and as of now was located somewhere along a line from Cooperstown to Hillsboro to Park Rapids. High pressure builds in on Sunday with lighter winds and more sun, but cooler as well.
This high will keep weather conditions quiet through Saturday night. Appears this front will stall from northwest to southeast across the area, with highs ranging from lower 40s on the warm side of the front across far southwest Nebraska to the lower 20s across portions of northern Nebraska on the cold side.
Another high pressure system builds into the forecast area Sunday afternoon and moves to the east Sunday night.
229 PM EST Sat Jan 27 2018 With strong high pressure remaining over the Carolinas, isentropic processes in full effect as light rain continues to increase in coverage across most of North GA.
We will see slow cold advection over the next few days, along with a series of weak PV anomalies as the upper pattern becomes more trof-y over the northern plains. The last wave of note is embedded in northwest flow on the western edge of the upper trough that will continue to migrate slowly eastwards with an amplifying upper ridge to the west Sunday.
A significant moisture plume is moving onto the coast as the warm front develops and heads our way. Temps will be tricky as always in these types of systems, with precip holding temps down initially, and then the warm frontal influence trying to increase them later. Guidance agrees that a weak impulse will follow the warm front this evening, producing another, though much lighter, precip event. Sunday will be warmer, with highs near 10 degrees above normal.
The showers will be moving southeast of the area by early evening as a cold front slides southeast.
The northwest wind with gradually shift south this afternoon as high pressure moves east. Despite a much cooler start to the day compared to yesterday, the downslope wind this afternoon will warm temperatures to the lower 50s to around Scott City and Hays, to upper 50s near Medicine Lodge. Sunday, a backdoor cold front will begin to move into the region by morning.
Rain will move across much of central Indiana today along and ahead of a cold front.
A quick return to south to southwest winds by tomorrow afternoon ahead of the next, stronger front will bring temperatures a couple of degrees warmer than those today.
955 AM MST Sat Jan 27 2018 Current surface analysis shows low pressure over western Ontario, with cold front stretching west-southwest into northern MN and ND. Cooler air will continue to push into the area over the weekend as the cold front to the north slides south through the region today. Highs today will range from the 20s across far northwest SD to the lower 40s across portions of southern SD.
Band of rain associated with a cold front currently crossing the TN river. and into early Sunday on the plateau as the trailing cold front pushes slowly across. associated with a cold front.
However, clouds will increase through the day ahead of the approaching PV anomaly and associated cold front which will push into northern MO and western IL during the afternoon hours. The passage of this front and the cloud cover will mean temperatures will be much cooler tomorrow in northern MO/western IL, where highs will likely only make it into the lower 40s. It will be much warmer along and south of I-70 south of the boundary, where temperatures will push into the mid/upper 50s once again.
Surface ridging continues to build into the area behind last night's FROPA.
241 PM CST Sat Jan 27 2018 (Tonight and Sunday) Skies continue to clear this afternoon in the wake of this morning's cold front. The clear skies and light winds will allow temperatures to fall into the lower to mid 30s across the area with a few spots possibly dropping into the upper 20s.
Despite the thin cirrus, weak flow at the surface (no downslope) across the Plains will keep temperatures in check today, expecting highs in the low 40s other than the low elevations of Weld County along the South Platte where the inversion is deeper, highs should only reach the upper 30s. Strong west winds around 40-50 mph will remain confined to the higher mountains. Strong winds are expected as subsidence under the right exit of the jet forces the higher winds aloft to the surface.
1250 PM EST Sat Jan 27 2018 Increasing clouds ahead of approaching cold front which will cross late today and tonight.
A fairly low amplitude longwave pattern was in place across much of the CONUS with broad ridging centered across the West Coast and broad troughing across the Upper Midwest/Mississippi Valley. The Western Plains remained in west-northwest flow aloft, with a large high pressure region at the surface across much of the central and southern High Plains. We will be watching a weak cold front (rather shallow in nature) move down into northern Kansas early tomorrow morning, with a small surface wave developing along it as a jet streak moves into western Nebraska and Kansas in the northwest flow. Timing of the cold advection in the north is still a bit in question, which throws a bit of uncertainty into the high temperature forecast around Hays, but by far the coldest afternoon air will be up in Nebraska (along with precipitation chances).
Cold front will slowly edge into Central KS, with temperatures likely quasi-steady or slowly falling in the afternoon in far northern sections.
115 PM EST Sat Jan 27 2018 Rain showers as a cold front moves into the region tonight.
328 PM CST Sat Jan 27 2018 At 3 PM, a cold front was producing a broken 6-10K deck of clouds across southeast Minnesota and northeast Iowa. Further upstream, a much stronger short wave trough was located over the Dakotas.
201 PM EST Sat Jan 27 2018 Rain through tonight with a crossing cold front. Rain chances continue Sunday south of Interstate 68, with dry weather expected under high pressure elsewhere. The front is progged to slide E of the area by Sunday morning, though a developing wave along the front in response to an approaching, deepening upper trough should slow its progression.
The combination of light snowfall rates, temperatures hovering above freezing, and warm ground is limiting accumulations throughout the Treasure Valley. The Magic Valley should be getting in on the action by late morning, but with temperatures hovering above freezing there will be little accumulation there. Snow levels are expected to rise above all but the highest valley floors overnight. A significant moisture plume is moving onto the coast as the warm front develops and heads our way. Temps will be tricky as always in these types of systems, with precip holding temps down initially, and then the warm frontal influence trying to increase them later. Guidance agrees that a weak impulse will follow the warm front this evening, producing another, though much lighter, precip event. Sunday will be warmer, with highs near 10 degrees above normal.
Some of the activity mixed with sprinkles as temperatures rose above the freezing mark in far southern Minnesota.
The lift with this trough is rather weak, as indicated by the Thaler QG omega progs, but there is plenty of saturation in the low-levels to support the light snow showers. Tonight, chances of precipitation will diminish as some drier air will filter in as the cold front passes. Despite the departure of the cold front, some clouds may linger over the region due to the cold air advection behind the front. This will have an impact on tonight's low temperatures, as more cloud cover will keep temperatures a little warmer than without.
Temperatures tonight will be mild with low falling to around the freezing mark.
A few light showers will linger near and just ahead of the cold front, southeast of Waurika to Seminole line before 9 am this morning. The air will be very dry and preferred the lower 00 UTC ECMWF/latest HRRR model surface dewpoints. Surface winds will increase slightly across northern Oklahoma late Sunday ahead and just behind an approaching cold front. Sunday should be slightly warmer than today.
A ridge of high pressure will be building stronger over the area the next couple of days.
1122 AM CST Sat Jan 27 2018 A cold front is currently making its way through the region. Despite the passage of the cold front, the air behind it is not very cold, so expect afternoon highs once again to reach the 50s. A good radiational cooling set up tonight with the high overhead.
210 PM EST Sat Jan 27 2018 A cold front will spread rain across the area tonight through Sunday night.
Meanwhile, a positively tilted trough aloft that helped push yet another dry cold front through the area overnight will leave temperatures right around climatological norms for late January, mostly in the mid to upper 50's this afternoon. As the trough passes to the east and lifts north, upper level ridging will slide in from the west and high pressure builds at the surface for today and tomorrow.
1126 AM PST Sat Jan 27 2018 A vigorous low pressure system will bring widespread snow to northeast WA and the Idaho Panhandle today.
335 PM EST Sat Jan 27 2018 A cold front will move east across the area late today and early tonight. High pressure will build briefly across the Ohio Valley on Sunday ahead of a second cold front that will drop across the region Sunday night.
Tonight and Sunday The latest RAP analysis and satellite/radar imagery show broad troughing over the northern Plains to western Great Lakes early this afternoon. However, surface obs are showing widespread light snow and flurries over northern Minnesota, just ahead of a cold front positioned just north of the Minnesota-Canadian border. Progged soundings are not optimistic about deep saturation associated with the trough, and upstream obs indicate that chances of flurries or light snow showers are pretty low. Lows ranging from the low teens in the north to low 20s in the south. Kept the highest chances over northern WI though where there should be some contribution from Lake Superior.
1029 AM MST Sat Jan 27 2018 The forecast focus is on the temperatures as the remaining snow cover continues to affect mainly the high temperatures across the forecast area for the next few days. During this time the northwest flow aloft across the Rockies becomes stronger and more amplified through the weekend as an upper ridge moves into the western U. A short wave trough embedded in the upper flow moves across the region mainly north and east of the forecast area on Sunday with strengthening unidirectional flow bringing gusty northwest winds to the area during the day on Sunday.
338 PM EST Sat Jan 27 2018 Clearing skies will continue to spread across the area into this evening in the wake of a cold front that will bring drier conditions and slightly cooler temperatures.
125 PM EST Sat Jan 27 2018 A cold front will spread rain across the area tonight through Sunday night.
High pressure builds over central California the next few days. It will be breezy at times in the high Sierra Nevada Mountains. This means mid/upper level ridge builds over California with dry conditions through early in the week.
Easterly winds and seas will gradually diminish Sun morning through early Sun afternoon then shift north and gradually build late Sun through early Tue as an area of low pressure over the central gulf moves to the east and a surface cold front moves south over the northern and central gulf. Moisture levels will continue to increase today as a cold front slowly approaches the area from the northwest. The heaviest rainfall is expected to focus offshore this evening and tonight where a weak area of low pressure is expected to develop. Highs today will range from the low 60s in the northwest to upper 60s in the southeast. Lows tonight will be in the low to mid 50s inland to upper 50s along the coast.
The cold front is gradually moving southeast, and currently was near DEQ, to RUE to south of BPK. The main area of rain was associated with the upper level lift which is a head of the cold front and much of the rain is forecast to push out of the state around midnight. The cold front will switch winds to the northwest to north, and bring in cooler and drier air. Temperatures a head of the cold front will be above normal today will be in the upper 50s to lower 60s, while behind the front in the lowering into the 40s. Today Through Sunday Night Cold front was located along the I-44 corridor early this mrng and was poised to enter the NW corner of AR.
1119 AM CST Sat Jan 27 2018 A cold front moved through the area last night however, with little cold air advecting in behind it, temperatures will remain well above normal today. Sunday a clipper system will force another cold front through the area. What is less in doubt is that this cold front will usher much colder air into the area. Highs Sunday will be in the mid to upper 30s across the northern CWA where the front will pass earlier in the day, to the low 50s across the south out ahead of the front.
A cold front advanced just east of the Mississippi River during the early morning hours. Mild air will remain across the area today in the wake of a cold front.