Aikyam-Lab/Synoptic-Bench huggingface dataset:
Winds will shift towards the N Wednesday as a cold front moves across the area. A few impacts that we are monitoring as data comes in this morning are potential for fog across south/eastern portions of CWA early tomorrow morning and fire danger elevation across far southwest portions of CWA ahead of tomorrow's cold front. A cold front will move through on Wednesday as an upper-level trough moves from the Canadian Prairies to the U.
It's gonna be chilly tonight as we all fall into the low 30s, but winds should become calm so it shouldn't be all that bad.
A cold front will continue to move through the area with flow shifting to out of the northwest by midnight. This will advect colder air into the area causing low temperatures tonight to be near or below freezing. high pressure begins to set up with temperatures several degrees cooler than today thanks to that northwest flow bringing in cooler air.
1144 AM CST Tue Dec 27 2016 At 08z, a surface cold front was well southeast of our region with ridging associated with high pressure centered over KS building in. The center of high pressure is expected to move into southeast MO by late this afternoon, maintaining westerly flow into the afternoon before backing southwest by nightfall.
Highs in the 40s will be common along and south of Highway 30 gradually cooling toward freezing near the Minnesota border where snowpack still exists. The warm advection intensifies tonight with the approach of a boundary and thermal ridging will build into the state.
an hihs AOA 80 many other locations excluding right at the coast where its a bit cooler and foggier. On Wednesday front lifts north as a warm front with much of the area again seen warm humid conditions.
The weak cold front has slowed its southward progression along the I-10 corridor and will eventually wash out by tomorrow morning. The low clouds and fog will persist through midday, then a southwest flow and some breaks in the clouds should allow temperatures Wednesday afternoon to warm into the upper 70s to around 80.
Tonight's lows will once again drop to around freezing or slightly above which is still about 10 to 15 degrees above our normal low for this time of year.
Highs are on track to top out in the 20s for most areas, although the southwest CWA may see the lower 30s.
/issued 940 AM CST Tue Dec 27 2016/ The cold front has moved south of the CWA as of 930 AM, with north winds observed across all of the Mid-South. /issued 257 AM CST Tue Dec 27 2016/ Currently a slow moving cold front had just passed through Savannah Tennessee and Clarksdale Mississippi. In the past 24 hours the highest rainfall amounts were seen across the north.
1229 PM EST Tue Dec 27 2016 Dry weather and seasonal temperature can be expected until the approach of a Wednesday night cold front. The mid level thermal trough still looks sufficient to support a few snow showers off the lakes tonight.
550 AM EDT Tue Oct 4 2016 High pressure will remain across the region through the end of the week. The high pressure ridge will remain over the area through the period. A filling upper level low will be over Cape Cod and will slowly fill as it move southeast into the north Atlantic. High pressure will continue to reign supreme through the short term with sunny skies, light winds and abv normal temperatures. Main question continues to center around the strength of the sub-tropical ridge and what impact that wl hv on the mvmnt of Matthew and this still rmns to be seen. Other than that, expect VFR through the period under high pressure.
323 AM CDT TUE OCT 4 2016 A broad upper trof with an embedded stacked low over eastern Montana and western North Dakota responsible for rain with shallow convection on a quick northward trajectory, while the whole warm conveyor makes a slow eastward progression.
343 AM CDT TUE OCT 4 2016 Upper ridging beginning to take shape over the far eastern U. Meanwhile over the nations interior, broad shallow troughing is in place. Upper trough axis along the lee of the rockies will pivot northeastward today but stay well clear of our neck of the woods.
Short wave trough coming in from the north Pacific is weaker than models forecast yesterday but it will still bring scattered rain and snow showers today to northern areas, and isolated rain showers to southern areas. A stronger short wave trough will follow with more rain and mountain snow showers tonight, but models weaken it quickly Wednesday as it moves into Idaho.
The upper ridge that has been over the area will continue to flatten today as an upper trough moves across the plains.
658 AM EDT Tue Oct 4 2016 An upper level low, which has impacted our weather for several days, is finally exiting by sliding off the coast.
411 AM EDT Tue Oct 4 2016 Building high pressure will maintain dry and warm weather for much of the week. High pressure will build in today, fog will dissipate, and mostly sunny skies will return.
This morning WV/IR satellite shows an area of low pressure off the BC coast. This morning the best risk will be over the Cascades through southeastern WA and the lower ID Panhandle.
However, little accumulation is expected as temperatures are expected to remain at or above freezing. The main band of wrap around precip will also lift north this evening as the upper low moves north into Saskatchewan.
322 AM EDT Tue Oct 4 2016 High pressure will build in from the northeast today through tonight.
Otherwise, partly cloudy skies and slightly warmer temps are expected.
601 AM EDT TUE OCT 4 2016 A pressure ridge will extend along the Appalachians with an inverted trough just off the Southeast coast through Wednesday. The upper troughing extending into the area will lift farther northeast. The models have been consistent keeping deep moisture east of the forecast area associated with the offshore trough. The models show continued surface ridging from the north and significant moisture east of the area associated with an inverted trough off the coast. Aloft, ridging is shown extending into the area from the east. The northeast flow favored the lower guidance but this should be offset by the upper ridging.
400 AM EDT Tue Oct 4 2016 A ridge of high pressure will build over the region today and remain over the area through the end of the work week.
403 AM CDT TUE OCT 4 2016 Main concerns in this forecast cycle are chances of convection with the upper system and cold front, while temperatures will start above normal values, then cool behind the front over the weekend. The surface and upper high pressure ridge have moved east of the region, and a south surface wind flow has returned to AR. The upper low pressure system was over the northern Rocky Mts with the trough south to the rest of the Rockies. The upper high pressure ridge over the east is holding it back.
551 AM EDT Tue Oct 4 2016 High pressure will bring dry conditions today with partly cloudy skies and high temperatures in the mid 70s.
Models do bring an upper trough axis across the CWA today. Southwest flow aloft will be increasing Wednesday as another upper trough digs south from the Pacific Northwest down into the Northern and Central Rockies. A stronger cold front will push south into the area overnight.
Continued warm on Wednesday with temps a degree or two warmer.
A strong U/L trough will dig through the plains today which will induce strong downstream ridging over the eastern U. A strong U/L ridge will persist over the central Atlantic with the ridge axis extending off the southeast U. At the surface, high pressure over New England will extend down the Eastern Seaboard.
410 AM EDT TUE OCT 4 2016 High pressure positioned northeast of the area will be the main influence on our local weather through much of the week. One dissipating cold front will near northwest Ohio Wednesday night.
639 AM EDT TUE OCT 4 2016 Skies will clear out today with comfortable temperatures as high pressure builds across our region.
120 AM EDT Tue Oct 4 2016 A weakening upper low over New Jersey will push off the coast overnight. A ridge of high pressure will build east into Pennsylvania behind this system, and will likely remain over the area through the end of the work week, bringing mainly dry and slightly milder conditions across Central Pennsylvania. and along with PBZ opted to go for Dense Fog Advisory through mid morning Tuesday for all but the Lower Susq River Valley. Lows will drop back into the upper 40s across the Allegheny Plateau, to the low 50s over the Susq Valley. Upper ridging is forecast to build over the eastern United State through the weekend. This will support high pressure at the surface, providing the state with a stretch of fair and warmer weather for much of the work week.
Upper troughing with a few fast-moving impulses will maintain clouds and the chance for rain across much of the forecast area through midweek.
Current water vapor imagery and RAP upper air analysis indicate a closed low across the Mid-Atlantic and a ridge across the Great Lakes. At the surface, there appears to be an inverted trough across the forecast area with easterly winds in SW VA and northeasterly winds across the Central valley. Therefore, have only seen an uptick in cloud cover with this surface inverted trough.
149 AM EDT TUE OCT 4 2016 High pressure through mid week. Upper trough and an associated cold front push across the area this upcoming weekend. High pressure in place will provide dry weather through the near term period.
323 AM PDT TUE OCT 4 2016 An upper-level trough will linger across the West Coast through Wednesday, maintaining the cooler conditions and onshore flow.
316 AM EDT Tue Oct 4 2016 High pressure will remain across the region through the end of the week. The high pressure ridge will remain over the area through the period. A filling upper level low will be over Cape Cod and will slowly fill as it move southeast into the north Atlantic. High pressure will continue to reign supreme through the short term with sunny skies, light winds and abv normal temperatures. Main question continues to center around the strength of the sub-tropical ridge and what impact that wl hv on the mvmnt of Matthew and this still rmns to be seen. Other than that, expect VFR through the period under high pressure.
658 AM EDT TUE OCT 4 2016 High pressure positioned northeast of the area will be the main influence on our local weather through much of the week. One dissipating cold front will near northwest Ohio Wednesday night.
So, have opted to extend the High Warning until 9 PM this evening. This in response to a strong upr low currently over Wyoming and a cold front now progressing across the Panhandle. have opted to cancel the high wind warning over western Carbon county as winds have not really come up there and 7H winds fcst to stay in the 35-40kt range through this evening. With some downward motion around the mtns will maintain the high wind warning there. The upper low will move to eastern Montana Tuesday and into far southern Canada Weds. Cooler temperatures across the CWA over the next couple days with chilly nights.
230 AM EDT Tue Oct 4 2016 An upper level low, which has impacted our weather for several days, is finally exiting by sliding off the coast.
With that said though I think the eastern portions of our area could see the arrival of the low cloud deck right at sunrise and have modified the Sky grids to reflect this. Warmer morning lows (59 to 64 degrees) will spread west into northwestern AL Tuesday night due to southerly flow. As a broad trough extends from the west coast to the northern Plains, a ridge stretches from the southeast up the Atlantic coast.
/issued 139 PM CDT MON OCT 3 2016/ Have an upper trough over the Great Basin this morning with a weak upper ridge over NM and TX. As this trough lifts NE it will displace the upper ridge and bring a chance of storms to the region tonight.
301 AM EDT Tue Oct 4 2016 High pressure will build in from the northeast today through tonight.
435 AM CDT TUE OCT 4 2016 Today through Wednesday night, A weak ridge of high pressure associated with a dry, hot airmass will continue to be the biggest influences on the ArkLaMiss weather for the next couple of days.
Model 925-850 mb relative humidity forecasts have a good handle on this area which is expected to lift north of the forecast area this afternoon but will replaced by increasing mid-high level clouds ahead of approaching 500 mb trough.
352 AM EDT TUE OCT 4 2016 A pressure ridge will extend along the Appalachians with an inverted trough just off the Southeast coast through Wednesday. The upper troughing extending into the area will lift farther northeast. The models have been consistent keeping deep moisture east of the forecast area associated with the offshore trough. The models show continued surface ridging from the north and significant moisture east of the area associated with an inverted trough off the coast. Aloft ridging is shown extending into the area from the east. The northeast flow favored the lower guidance but this should be offset by the upper ridging.
Water vapor loop reveals a shorter wave length ridge persisting over the Great Lakes with mesoanalysis showing much better anticyclonic flow at the surface compared to yesterday. Highs in the low 70s, several degrees warmer than yesterday, remain a reasonable expectation. The weather through late week will be moderated mainly by the evolution of the closed low over Montana that is presently anchoring the developing longwave trough over the western US.
Showers and storms will then start to increase again later this morning through this afternoon as strong upper support approaches, and the approach of the somewhat diffuse surface cold front will contribute to an increase in activity. High temperatures today should be in the mid 60s to low 70s, with the warmer readings far west and east, on either side of the most concentrated late morning and early afternoon precipitation.
A gradual warming trend is then expected through late week and into the weekend as high pressure builds over the region.
Focus then shifts to this afternoon and evening as a cold front moves through.
628 AM EDT Tue Oct 4 2016 Building high pressure will maintain dry and warm weather for much of the week. High pressure will build in today, fog will dissipate, and mostly sunny skies will return.
Very Warm Weather Mid Week Followed by a Cold Front and Much Cooler It will be warm for early October standards and the humidity will creep back up.
Temperatures along the island chain are in the lower 80s under partly cloudy skies.
432 AM MDT TUE OCT 4 2016 Strong upper low over eastern Montana will be lifting north today with flow over eastern Utah and western Colorado becoming more westerly with strong Pacific jet rolling into the region. The jet rips through the region tonight with another Pacific trough digging across the Great Basin. Few of the lower valleys getting close as well, but any freezing temps will be brief in those locations. Another closed low comes ashore over Washington State late Wednesday. This wave then becomes a more pronounced trough as it approaches our area and interacts with a trough from the North Dakota low.
123 AM EDT Tue Oct 4 2016 Building high pressure will maintain dry and warm weather for much of the week. High pressure will build in today, and return a mostly sunny sky.
623 AM EDT Tue Oct 4 2016 High pressure will build in from the northeast today through tonight.
309 AM CDT TUE OCT 4 2016 Broad cyclonic flow is in place over the western half of the nation this morning with ridging over the Ohio/Mississippi Valleys. At the surface, a cold front will extend south of low pressure near the Canadian border down to around the Kansas border where it will meet a triple point over far NW OK or SW KS. Storms should fire along the cold front down to near the triple point, with a more isolated threat south along the dryline. The broad western trough will eventually lift out to the northeast by the end of the week.
A warm front is moving through the region tonight bringing with it lower cigs and a chance of light rain showers. Some of the heavier showers could drop ceilings briefly to MVFR over the higher terrain.
/Issued 309 AM CDT TUE OCT 4 2016/ Broad cyclonic flow is in place over the western half of the nation this morning with ridging over the Ohio/Mississippi Valleys. At the surface, a cold front will extend south of low pressure near the Canadian border down to around the Kansas border where it will meet a triple point over far NW OK or SW KS. Storms should fire along the cold front down to near the triple point, with a more isolated threat south along the dryline. The broad western trough will eventually lift out to the northeast by the end of the week.
130 AM EDT TUE OCT 4 2016 High pressure will be over the area into tuesday then shift into new england the rest of the work week.
341 AM CDT TUE OCT 4 2016 Upper level low pressure continues to spin out to our north through the northern and central high plains early this morning, with an extension of mid and upper level vorticity advection currently crossing the Texas panhandle and northern South Plains. Passage of a Pacific Cold front should not necessarily bring noticable cooling, with the downslope offset, very dry replacement airmass, and full sunshine. Until the weekend, models do agree in pulling back low level moisture into at least the Rolling Plains on Wednesday in response to another long wave trough moving across the Rockies.
Notable upper jet streak has rounded the base of the upper level low and is punching newd through the northern plains. Scattered/Numerous showers and thunderstorms should continue to move/develop north-northeast across the region overnight in plentiful low/mid-level waa-forced regime out ahead of this upper low churning into southeast montana. Windy conditions, along with thunderstorms along the nearing cold front will continue to be the main concerns through the early evening hours. Low pressure over eastern WY/MT will move to northwestern ND tonight, and remain over this area through Wednesday. The cold front will slow down over eastern SD/western MN late tonight into Tuesday, with showers and thunderstorms remaining possible until the 500MB trough extending from the low over eastern MT pushes it east. Much cooler air will then slowly settle in for the rest of the period.
134 AM EDT Tue Oct 4 2016 Building high pressure will maintain dry and warm weather for much of the week. High pressure will build in today, and return a mostly sunny sky.
408 AM CDT TUE OCT 4 2016 Upper level ridge is beginning to expand across the eastern third of the country from the Great Lakes to the Gulf of Mexico. Some shower and thunderstorm activity on the southern periphery of the ridge may nudge in, but most of that should be along the coast. A broad long wave trough will rotating across the northern Rockies into Canada today through Wednesday. Models have backed off on qpf over the area as the ridge overhead keeps rain offshore for the most part.
335 AM EDT Tue Oct 4 2016 High pressure will bring dry conditions today with partly cloudy skies and high temperatures in the mid 70s.
Upper low pressure in eastern Montana will slowly lift to the NNE as increasing PWats stream northward within 50kt 850mb LLJ this morning. With the position of the upper low in SW Manitoba the FA will be in the clear slot with convective showers possible in the afternoon closer to the upper forcing in the Devils Lake basin.
216 AM EDT Tue Oct 4 2016 An upper level low, which has impacted our weather for several days, is finally exiting by sliding off the coast.
The low is forecast to lift north into southern Saskatchewan by later this evening. On the back side of the low, there could be additional chances for showers, with those mainly confined to parts of western North Dakota. The GFS is a bit of an outlier in this, but it is also slower in lifting the low north into southern Saskatchewan than the majority of model solutions. The influence of the low continues into Wednesday with the H5 low lagging a bit behind the surface feature.
The strength of the wind field atop the low level inversion has been supporting some higher based stratus at times, which has in turn led to some periodic improvement in visibility. While the strength of the low level winds will likely offer some improvement in sfc visibilities shortly after daybreak, the depth of the fog/stratus deck suggests it will take well into the morning if not early afternoon before mixing out. Water vapor loop reveals a shorter wave length ridge persisting over the Great Lakes with mesoanalysis showing much better anticyclonic flow at the surface compared to yesterday. Highs in the low 70s, several degrees warmer than yesterday, remain a reasonable expectation. The weather through late week will be moderated mainly by the evolution of the closed low over Montana that is presently anchoring the developing longwave trough over the western US.
The narrow band of light rain that has been sitting over the lower ID panhandle and SE WA is finally beginning to break apart as the low departs and the next system approaches from the west. Consequently, temperatures should be a bit warmer with fog setting in as temperatures dip into the mid to upper 30s. /sb 06Z TAFS: Midlevel clouds assoc with low pressure in Idaho will be slower to diminish and although thinning.
548 AM EDT Tue Oct 4 2016 High pressure will build over the eastern United States through mid week. Slightly drier high pressure will continue to build in from the north while a broad trough lingers just off the coast. The deepest moisture will remain off the coast where the coastal trough will continue to spur scattered to numerous showers and tstms. High pressure will remain north of the area while tropical cyclone Matthew moves north from the Bahamas.
222 AM EDT Tue Oct 4 2016 The upper low will continue to move away from the region tonight and high pressure will allow for dry conditions through Tuesday night. These clouds will continue to erode away through the rest of this evening as high pressure builds in from the east. High pressure and dry conditions will continue for Tuesday and into Tuesday night. Upper ridge influencing the region at the beginning of the period will get shunted east as Matthew moves north along the south Atlantic coast and a short wave approaches from the west. 12Z models have slowed the progression of the short wave and associated cold front.
Clearing and warmer after mid-week. Weak ridging overnight will give way to more cyclonic flow across NorCal today and Wednesday as the large low off the BC coast moves into the PacNW.
High pressure will continue to bring dry weather and generally VFR conditions. Moisture remains trapped in the lowest 3000 feet, so any cloud cover tomorrow will be minimal and restricted to the lower levels. Upper-level ridge is in the process of flattening as a deep trough moves through the Great Basin. Tuesday night's min temps will also run 4-6 degrees above normal, generally in the low-mid 70's.
314 AM EDT TUE OCT 4 2016 A pressure ridge will extend along the Appalachians with an inverted trough just off the Southeast coast trough Wednesday. The upper troughing extending into the area will lift farther northeast. The models have been consistent keeping deep moisture east of the forecast area associated with the offshore trough. The models show continued surface ridging from the north and significant moisture east of the area associated with an inverted trough off the coast. Aloft ridging is shown extending into the area from the east. The northeast flow favored the lower guidance but this should be offset by the upper ridging.