Aikyam-Lab/Synoptic-Bench huggingface dataset:
245 AM CDT Fri Jul 28 2017 A cold front near the Ohio River early this morning will continue southward and clear most if not all of the FA by midday/early afternoon. Max temps will be in the lower to mid 80s even with abundant sunshine. The dry and cooler airmass which will be over the region for the weekend will slowly start to moderate as we work through the week. As such, humidity levels will be also slow to rise, with dewpoints remaining in the low to mid 60s early but rising into the mid to upper 60s later in the week.
Winds will take on a more southeasterly component during the day as the high settles to the south, but remain light through the afternoon. Will see mid and high clouds stream across the region, and temperatures will be similar to yesterday - in the lower to mid 80s. Overnight temperatures will be seasonable, in the lower to mid 60s. With upper level ridging extending across the intermountain west to southern plains this weekend, the northern plains will be under a light northwest flow aloft. High pressure at the surface just east of this area will continue to greatly influence our weather with seasonal temperatures. This high has effectively blocked the gulf, all the way through west Texas, therefore humidity values will not be very high either despite a south to southeast flow of surface air.
Front pushes east of the area overnight and cooler, drier air begins to work into the area.
216 AM CDT Fri Jul 28 2017 216 AM CDT Weak secondary cold front will continue to move slowly south across the area this morning, with some models hinting at some isolated showers or sprinkles south of the Kankakee River this morning. Otherwise, modestly brisk northerly winds are expected today with dewpoints a good 10F+ lower than yesterday with temps in the same ballpark or a bit cooler.
In the low levels, the gradient will increase across the state, with around 10mb across the state and mixed winds in the low 20kts range. More coverage is possible overnight with a mid level trough passing across the northeast part of the state, aided by the right entrance region.
307 AM EDT Fri Jul 28 2017 Upper air pattern consists of a 500 mb ridge across the southern U.
A weak cold front still expected to shift winds to the northwest this morning. Most of the higher resolution guidance is showing most of the activity on the terrain and weakening as it moves off the higher terrain. Given the higher PWs, not expecting dry thunderstorms. The forecast area will be under an upper ridge through the period.
429 AM CDT Fri Jul 28 2017 Most areas should be dry through this evening with continued below normal high temperatures only in the lower to mid 80s. An upper level ridge over the desert southwest is resulting in northwesterly mid to upper level flow across the central plains. Fairly strong influence of the upper ridge will be in place over the weekend.
Much cooler temperatures and a chance of showers tonight and Tuesday.
20Z water vapor imagery shows a closed low over northern NV with an upper trough over Hudson Bay. At the surface, ridging remained over the Great plains with the high centered over the upper Midwest. Although the ridge is weakening as obs indicate pressure falls along the lee of the Rockies. Southerly winds through the day Tuesday are expected to bring warmer air into the region with highs reaching around 50.
201 AM MST Tue Feb 13 2018 Upper trough this morning is extending from the northern Plains to central California. Warmer air is quickly pushing into the region this morning and will continue through the rest of the day.
233 AM CST Tue Feb 13 2018 High pressure was located over the eastern Great Lakes at 0730Z with ridging over the forecast area. The only observations with light snow/flurries was occurring gin east central North Dakota, which was closest to the upper level trof moving through the Dakotas. The upper level trof exits the region in the afternoon allowing for drier air to return. Neutral to weak warm air advection will translate to warmer min temps tonight with teens common.
311 AM EST Tue Feb 13 2018 The week ahead will be characterized by the occasional shearing of energy from the southwest US closed low along the periphery of the broad, flat upper ridge anchored over the southeast US. Surface temps will likewise be on the warmer side of normal, particularly given emerging southwest return flow around this morning's departing Canadian high.
1206 AM EST Tue Feb 13 2018 High pressure will build across the area tonight, before passing off to the east on Tuesday.
Skies are clear across much of the area as an exiting trough moves further south.
The exception will be locations along/north of a Macomb to Minonk line where a significant snow cover will keep readings in the lower 30s. Southerly flow will keep temps several degrees warmer tonight than they have been in recent nights.
Upper low over ne NV combined with deformation axis and upslope has kept light snow going across much of the area today. The snow will gradually taper off into this evening with just a few flurries lingering into the evening, mainly in the high country.
The precipitation is being produced by isentropic lift above the low- level inversion due to southwest winds of 25 to 35kts. Also, mid- level instability is being focused along an inverted trough over the area.
The only question tonight will be whether or not an inverted trough retrogrades from east TN and pushes some light showers onto the Plateau. If that does occur, it'll be closer to daybreak and temperatures (due to the cloud cover) will be above freezing, so I would expect sprinkles or light rain, at most.
Southerly breeze and clearing skies will lead to a warmer day for Tuesday, with highs as much as 20 degrees warmer compared to Monday. Wind direction will be favorable for some gusty winds along the Buffalo Ridge Tuesday and Tuesday night.
/issued 245 PM CST Mon Feb 12 2018/ WV imagery shows the upper-lvl trough that made landfall on the OR coast yesterday is now over nrn NV, putting West Texas and Southeast New Mexico under SW flow aloft. Meanwhile, the upper trough over NV is forecast to jog SW, to just off the SoCal coast by 06Z Wed. However, all models dig a secondary trough out of the PacNW that intercepts the first. As the trough moves east, it is set to push a strong cold front into the FA by 12Z Fri, taking temps well-blo normal by Fri afternoon. As the trough moves east, large-scale ascent ahead of the trough, combined w/the approaching RR quadrant of an upper jet, could kick off -SHRA over the NW zones as soon as Wed night.
South to southwest winds look to be pretty gusty Tuesday as stronger low-level winds develop along the mid- level trough. Thanks to the WAA, temperatures Tuesday will be much warmer compared to today, with highs in the lower to middle 20s across the area.
Southerly flow on the back side of the high will bring warmer temperatures as well as increasing moisture to central Indiana ahead of approaching frontal system.
353 AM CST Tue Feb 13 2018 Southerly winds will bring warmer temperatures into the area today with highs reaching the upper 20s and lower 30s.
Southwest winds will increase quite a bit, getting into the 10-15kt range across MN, but they will also usher in much warmer air, with our first day of highs near normal this month expected this afternoon.
This high was producing partly to mostly sunny skies across the Upper Mississippi River Valley. 12z models are in agreement that a weak short wave trough will move east through the area.
High pressure centered over lower MI early this morning. With the high departing to the east, deep warm advection will develop, and persist thru the near term period. That high will be over southern New England by the end of the day, and move offshore tonight, while low pressure moves into s central Canada.
Lows tonight will stay above freezing for most of the area with the exception of the northernmost counties in the CWA.
A cold front is stretched from the outer banks of the Carolinas across the FL Panhandle into the western gulf. Aloft, a trough is over much of the country, however an upper low near the west coast is gradually shifting south and west.
As this warm and humid airmass has encountered the shallow pool of cooler air at the surface, it has been isentropically lifted into a persistent low stratus deck throughout the day.
Forecast focus on a bit warmer temperatures. The forecast will indicate highs this afternoon ranging from the mid to upper 20s north to the lower to mid 30s south.
Large scale pattern at 500 mb features a trough in the western US and another trough that extends from Hudson Bay toward the Great Lakes. At the surface, cold high pressure was building east across MN, IA and MO with low pressure over the high Plains.
305 AM EST Tue Feb 13 2018 High pressure will provide fair weather today into tonight.
1144 PM CST Mon Feb 12 2018 Going forecast is in good shape with high pressure and the associated dry air mass in control of the local weather. High pressure will drift east across the lower Great Lakes tonight and be centered over the eastern Great Lakes by Tuesday morning. Another quiet day expected on Tuesday with temperatures edging up across the entire area, although the snow covered sites across the north will struggle into the low and mid 30s, while further south, the combination of sunshine and warming temperatures aloft should yield afternoon temperatures in the middle 40s.
302 AM EST Tue Feb 13 2018 High pressure in charge today, with a partly cloudy to mostly sunny sky, and near normal temperatures.
This is currently and will continue to build a ridge of high pressure along the leeward side of Appalachians.
212 AM EST Tue Feb 13 2018 Broad high pressure centered over the lower Great Lakes and Ohio valley will drift to the east coast today.
230 AM MST Tue Feb 13 2018 Longwave trough currently extends across the Great Basin, with southwest VLow across the Central High Plains. A warm front has stalled just north of interstate 70 in NW Kansas.
252 AM CST Tue Feb 13 2018 Surface winds will shift to the south today and allow for temperatures to warm to slightly above normal levels with highs ranging from around 40 along the IA border to the low 50s in our south.
351 AM CST Tue Feb 13 2018 (Today and Tonight) Low level moisture has surged north into West Central Texas this morning, with temperatures actually climbing as the low clouds have moved in. Highs will be a little warmer today, mainly in the low 50s across the extreme eastern portions of the area where the clouds will persist, to the lower 60s across the west where the clouds will break.
Weather highlights include highs largely 15-20 degrees warmer than yesterday across much of the area and then mild lows tonight.
1135 PM EST Mon Feb 12 2018 High pressure will provide fair weather through Tuesday.
High pressure is building across the Upper Mississippi Valley and will build east across the Great lakes region overnight tonight. So, even with light winds and a dry air mass at the lower levels, only expect that temperatures will drop into the single digits overnight tonight. Through the day tomorrow, low level flow will continue to shift to more southerly through the day as low pressure develops over the western plains. Increasing low level warm advection should allow temperatures to rebound back to the lower 30s. This warming trend into the middle part of the week will bring warmer temps to the area, however, still not overly confident with high temps with current snow pack in place and possible cloud cover.
as a sfc cold front sinks into the region during the overnight period.
401 AM EST Tue Feb 13 2018 High pressure in charge today, with a partly cloudy to mostly sunny sky, and near normal temperatures.
With warmer temperatures no winter precipitation is expected tonight.
154 AM EST Tue Feb 13 2018 High pressure will be centered overhead today.
Southeast and south surface winds tonight will become more southwest on Tuesday as lee trof moves into northwest part of forecast area.
A relatively active pattern is expected for the forecast period noted by a strong cold front Wed/Thu and a couple of short waves late in the period, all the while riding a roller coaster of a temperature trend.
455 AM EST Tue Feb 13 2018 High pressure will be centered overhead today.
/issued 324 PM CST Mon Feb 12 2018/ After another cool day today we'll see another cooler than normal overnight into tomorrow morning with temperatures bottoming out into the teens and low 20s across the region.
The slow warming trend will continue Tuesday, as atmospheric thickness and south/southwest winds increase, with forecast high temperatures reaching the low 50s most areas.
339 AM EST Tue Feb 13 2018 Dry weather is expected today under high pressure.
Lows tonight range from the low to upper 30s, which is above climatology for this time of the year.
/Today through Tonight/ Large area of high pressure across much of the Great Lakes and west into Wisconsin will continue to move east today with return flow and warm advection occurring into Iowa. Warmer air will continue to lift north today, however the deeper snow pack will mitigate some of the impact across the state.
423 AM EST Tue Feb 13 2018 An upper-level composite analysis early this morning reveals a deep layer mean anticyclone covering the entire southeastern United States, Gulf of Mexico, Florida Peninsula, Bahamas, and most of the western Caribbean Sea. A steady easterly flow prevails throughout most of the lower troposphere over the Florida Keys, with a near-maritime tropical air mass at the surface. The local atmosphere is moist near the surface, and weakly unstable through the lower troposphere, with moderate low-altitude convective inhibition energy. A prevailing high pressure cell across the southeastern United States and adjacent Gulf and Atlantic waters will maintain steady easterly breezes across Florida Keys coastal waters for the next several days.
Surface lee troughing in Eastern Colorado and an impressive pressure gradient has caused wind gusts upwards of 40 mph, especially west of Garden City this afternoon. Mid to high level clouds will move in tonight, which will help to keep temperatures about 10 degrees warmer than last night to lower 20s in far southwestern Kansas, and upper 20s near Hays.
429 AM EST Tue Feb 13 2018 Upper air pattern consists of a 500 mb trough and closed low in the western U. this morning and a broad 500 mb trough across central and eastern Canada down into the Great Lakes region and a ridge off the se coast. The ridge moves into the Gulf of Mexico 00z Wed with the trough in the western U.
1200 AM EST Tue Feb 13 2018 Dry weather is expected today under high pressure.
H850 warm front from an intermountain H850 low over Nevada/Utah at 12z will continue to produce mid level clouds. Speed max rounding the trough already ejecting some high level broken to overcast conditions into the region now. Though everyone will be warmer overnight due to the cloud cover by about 10 to 15 degrees. though most of the warmer air is aloft at this time so rising temperatures will be limited. /Tuesday night through Monday/ The longer term is essentially quiet for much of this week as the upper flow flattens allowing warmer air into Iowa.
A moderate MSLP gradient will support surface winds in the 15 to 25 mph range this afternoon, more toward the higher end of that range in a corridor from Liberal to Dodge to Larned.
123 AM EST Tue Feb 13 2018 Dry weather is expected today under high pressure.
1204 AM EST Tue Feb 13 2018 High pressure will build in from the west tonight and will crest over the region on Tuesday before moving offshore.
Southwesterly flow will remain in place at mid-levels through the day, funneling sub-tropical moisture into the region between a ridge building over the Florida Peninsula and a well defined trough over the Sierra- Nevada. Rain chances will remain on the low side, due to the absence of appreciable forcing. Diurnal swings will be on the low side once again today, with forecast highs remaining contingent on any breaks in the clouds.
A low pressure system moving through California and then off the coast, will bring cooler weather through Tuesday along with a chance for showers at times.
422 AM EST Tue Feb 13 2018 It will be cool and damp today and tonight just behind a cold front with high pressure ridging into the area from the north.
Lows Tuesday morning will be from the mid 20s north, upper 20s to lower 30s central to the lower 30s south.
Gradually the low clouds and fog will burn off by late morning with partly cloudy to mostly cloudy skies expected for your Tuesday. As has been the case for days now, it will be another hot day across the area with highs in the low to mid 80s.
High pressure will keep the area dry into Tuesday with low temperatures near or below freezing.
Winds were light with the lack of a pressure gradient as the high moves through. the high pressure will continue moving eastward toward the Great Lakes, which will allow light southeasterly winds to develop at the surface.
1251 AM EST Tue Feb 13 2018 Lingering clouds southeast of Lake Ontario overnight will gradually break up to reveal a mostly sunny sky for the coming day, courtesy of high pressure.
A break in the low clouds appears unlikely, and temperatures have been kept near the low end of model guidance for this afternoon.
1038 PM MST Mon Feb 12 2018 Longwave trough currently extends across the Great Basin, with southwest VLow across the Central High Plains. A warm front has stalled just north of interstate 70 in NW Kansas.
1130 PM CST Mon Feb 12 2018 A positively tilted upper trough will extending from Montana through the Great Basin with a closed low over Nevada.
320 AM CST Tue Feb 13 2018 Currently, there is an upper level split flow, with a trough extending from California northeastward to the Dakotas, while an upper level ridge builds into the Canadian Rockies. At the surface, arctic high pressure had exited the Northern Plains, and was now situated over the Great Lakes region. Meanwhile a surface warm front extended from a low over north central Canada across Saskatchewan/Alberta into western Montana. Today the warm front moves east across the Dakotas with an increasing pressure gradient to increase southwesterly winds to 15 to 25 mph across western and central ND.
259 AM MST Tue Feb 13 2018 The closed upper low over central CA will track southwestward off the southern CA coast by 00Z. As it does, increasing subsidence will occur as an upper level ridge develops over northwest CO. Snowfall later today will be light and confined generally to the higher west facing slopes. Low clouds and patchy fog may linger a bit, but around 12z window, skies should clear, then mostly sunny and warmer for the rest of the day.
High pressure was centered over Lake Huron at this time. With the high to our east, winds will shift to the south later this morning. Temperatures will be some 10 to 15 degrees warmer than Monday with highs from the mid 40s to upper 50s.
/Issued 726 PM EST Mon Feb 12 2018/ A cold front is currently bisecting GA from SW to NE across the central portion of the state. However, this has truly had little change in the low level airmass in place with continued cloudy and humid conditions. This will result in a cooler temperature to build in from the NE as winds veer easterly.
High temperatures in the low 60s are expected north of I-10, and upper 60s/low 70s southward.
1246 AM EST Tue Feb 13 2018 High pressure will build into the region from the Great Lakes today through Tuesday, bringing quiet weather.
224 AM CST Tue Feb 13 2018 A weak vorticity lobe and associated area of showery precipitation (most of which is sublimating before reaching the ground) was moving through the mid-MO Valley early this morning, downstream from a prominent upper low situated over the Sierra-Nevada Range.
Plenty of boundary layer moisture trapped underneath the low-level inversion with generally MVFR conditions at all TAF sites. An inverted trough developing over the Tennessee Valley is producing scattered light showers. The boundary layer trough will move west of the area in the morning/early afternoon with showers ending.
246 AM EST Tue Feb 13 2018 It will be cool and damp today and tonight just behind a cold front with high pressure ridging into the area from the north.
This low-level saturated layer is forecast to move northeast through the morning hours, especially along and east of I- 65 where the clouds will be thickest. Southwest flow just off the surface will also begin pumping in warmer air, and surface winds are forecast to veer southerly this afternoon as high pressure shifts to the East Coast.
1220 AM EST Tue Feb 13 2018 Aviation A Canadian Polar high pressure system will cross Lower Michigan tonight brining lows near zero but with mostly clear skies.
Have trended down temperatures just a few degrees in central MO where the low clouds may be more persistent, and will just watch trends over- night and into tomorrow morning.
Light showers across the region will continue to diminish through the evening and overnight hours as the upper low retrogrades westward off the California coast. Model forecasts show the low stalling out briefly this evening then gradually opening and beginning an eastward trek overnight through Wednesday night. Moisture will be pulled northward into Arizona, ahead of the trough later on Wednesday - the question is how much, and when. Warm air ahead of the trough will raise snow levels above 7000 feet by late Wednesday with rain expected in most areas.
Latest surface analysis shows coastal troughing inching closer to the coast but still remains several miles offshore. Closer to the coast however, the troughing will be close enough to push upper-60s dewpoints over the cold Gulf shelf waters allowing dense marine fog to develop. Though the marine dense fog advisory starts now, including the area bays and waterways, it will still take much of the evening for the lower visibilities to push into this area.
On the synoptic scale, lift increases Wednesday as the closed low off of the coast of California phases in with an approaching Pacific trough. A 150 kt upper level jet is set to fly into the Four Corners from the southwest Wednesday evening, keeping temperatures across the region warmer throughout the evening.
Overnight lows will range in the lower to middle teens. A thermal ridge will build into the Northland, which will warm 850 mb temperatures to around +2 to +5 degrees C, so expect the warmest day across the Northland since January 26, when Duluth reached a high of 45 degrees.
320 PM MST Tue Feb 13 2018 Current surface analysis shows remnants of arctic front stretching from eastern MT, to far eastern WY, to low pressure over southeast CO. Upper level analysis shows persistent northwest flow from southwest Canada through the Northern Plains, with an area of low pressure cutoff along the CA coast. Southwesterly winds can be expected in most areas, breezy at times over northeast WY, especially the higher elevations of Campbell County. Highs will be in the 40s across much of the area, possibly a bit cooler across parts of northwest SD. Clouds will begin to increase from the north and west in the afternoon as next cold front slides south across MT and ND.
This will allow temperatures to top out in the low to mid 60s across much of the region, although locations in our eastern counties will likely only reach the mid to upper 50s. Cloud cover will linger through much of the morning Wednesday, although some clearing during the afternoon should allow temperatures to warm into the low to mid 70s for most locations.
With a low persisting in eastern Colorado, lee troughing aided in gusty south/southwest wind once again today, along with beginning a strong warming trend for the next few days. Tonight, low temperatures will be roughly 7-10 degrees warmer than last night, reaching the upper 30s near the Oklahoma border, to upper 20s to toward northern Kansas. Upper level flow becomes quasi-zonal on Wednesday ahead of an approaching trough.