Aikyam-Lab/Synoptic-Bench huggingface dataset:
310 AM EDT Mon Aug 28 2017 An area of low pressure off the southeast coast will strengthen and lift northeastward today and Tuesday and will bring a chance for showers. High pressure centered over the Northeastern CONUS continues to ridge into the forecast area while an area of low pressure remains over the Southeast Coast. An area of low pressure currently located off the FL/GA coast is forecast to strengthen into a tropical storm later today as it moves along the SC coast. The highest rainfall is expected along the coast with a sharp gradient inland. The low will pull away to the northeast on Tuesday, with enough lingering moisture to only support isolated showers at best. Northerly flow will limit highs to the lower 80s most areas.
Synoptic Setup: Near term begins with a hot high pressure dome over the western half of the CONUS including northeast Montana. Today through Tuesday: With the ridge up high directly to the west conditions will be dry and clear to partly cloudy and hot. Upper level ridge will remain over Montana and most of the western US with hot and dry weather continuing.
416 AM EDT Mon Aug 28 2017 An area of low pressure off the southeast coast will strengthen and lift northeastward today and Tuesday and will bring a chance for showers. High pressure centered over the Northeastern CONUS continues to ridge into the forecast area while an area of low pressure remains over the Southeast Coast. An area of low pressure currently located off the FL/GA coast is forecast to strengthen into a tropical storm later today as it moves along the SC coast. The highest rainfall is expected along the coast with a sharp gradient inland.
POP chances are result of weak cold front moving in with the trough.
358 AM EDT Mon Aug 28 2017 Dry and cool weather will continue as high pressure remains in control.
The low clouds and fog will start to lift by late morning. Winds will be light outside of the thunderstorms and will turn more to the north and northeast behind the cold front which will be helping to add lift for the thunderstorms. /Issued 438 PM CDT Sun Aug 27 2017/ For tonight, a cold front will move across the OK and TX Panhandles.
655 AM EDT Mon Aug 28 2017 Showers will pivot into area this morning, steadily saturating the low levels so that on/off showers will be prevalent by 14z-16z on into the afternoon. Will replace tempo group this evening with TSRA as forcing/mid level dry slot with trough axis brings more conducive conditions for thunder late in the day. Better chance of TSRA late in the day with trough axis, but will maintain showers through 00z within initial plume of moisture. Upper level low centered over the Western Great Lakes early this morning, with 00z GRB revealing a 500 mb TEMP of -15 C.
Activity will initiate over higher terrain, transferring to the lower valleys by late afternoon on southerly winds aloft.
431 AM EDT Mon Aug 28 2017 An upper level low will approach and slowly move across the region today into Tuesday bringing multiple rounds of showers and storms.
430 AM EDT Mon Aug 28 2017 Skies are variably cloudy with temperatures ranging from the upper 70s to the lower 80s. Surface wise, a western Atlantic ridge is aligned across the outer Straits of Florida. A pesky trough (between 850 and 700 mb) extending southward and into the extreme southeast Gulf of Mexico will dissipate today.
Potential Tropical Cyclone Ten is expected to track parallel to the coast of the Carolinas through Tuesday before merging with a frontal zone and moving out to sea Tuesday night.
The upper low will continue to drop south today, so upper forcing will weaken across the region. This means that precipitation placement will mainly be tied to the location of an inverted surface trof and the main axis of daytime instability. As high pressure sags south into the region, partial clearing should lead to another night of fog development. High temperatures should be a few degrees warmer, in the lower to middle 70s.
Temperatures were in the lower to middle 60s across the area. For today, an upper level low and associated surface boundary will approach the region from the northwest. High temperatures will run below normal with readings in the upper 70s to the lower 80s. The upper level low is forecast to continue to swing through the southern Great Lakes region. Lows will cool into the lower to middle 60s. On Tuesday, the upper low will continue to move eastward out of the southern Great Lakes and into the northeastern US. Temperatures still will be below normal with highs in the upper 70s to the lower 80s. As we enter the forecast period, the aforementioned upper level low in the Great Lakes is forecast to continue to track east into New England with somewhat of a drier pattern emerging for the Ohio Valley.
152 AM EDT Mon Aug 28 2017 Canadian high pressure will continue to prevail through Monday providing dry weather and below normal temperatures. High pressure and riding aloft will remain over the region through Monday night and will keep dry weather in place. Temps are expected to rise into the low/mid 70s today, then fall into the uppr 40s/low 50s tonight. Temps will be similar to Sun, but slightly warmer over the Finger Lakes (reaching the mid 70s).
Temperatures will be quite toasty into the mid nineties for those in the lower Snake Plain, other upper 80s to low 90s for most of the rest of SE Idaho.
310 AM EDT Mon Aug 28 2017 Dry weather, and cooler than normal temperatures, will continue as high pressure remains in control. A cyclone will drift into the upper Midwest which will stimulate some warm advection and high cloudiness over our area at times. High pressure retreats into the North Atlantic on Tuesday while the developing tropical system off the southeast coast drifts to the north.
Dry conditions expected today as the area is sandwiched between an upper trough dropping over the western Great Lakes and low pressure off the carolina coast. The aforementioned trough will slowly transition east and open through the first half of the week. The region looks to largely remain under an area of subsidence between the Great Lakes trough and low pressure riding up the eastern coast. Therefore have cut back PoPs except over the ridges where sufficient low level moisture and upslope winds could result in light rain and/or drizzle during the day Tuesday.
Convection also was noted across portions of western Missouri, ahead of an approaching cold front.
313 AM EDT Mon Aug 28 2017 An upper low will bring chances for showers and isolated thunderstorms today into Tuesday, best chances this morning and again Tuesday afternoon. Temperatures will remain cool for this time of year, with highs in the low to mid 70s each day. An upper low over WI will drop south toward the IL/WI border today, then drifting into ne IL/far nw IN by later tonight. Scattered showers/isolated storms will likely fire across northern IL later this afternoon under the upper low. Chances for scattered rain showers will continue into Tuesday as the upper low spins east through the local area.
613 AM EDT Mon Aug 28 2017 An area of low pressure off the southeast coast will strengthen and lift northeastward today and Tuesday and will bring a chance for showers. An area of low pressure currently located off the FL/GA coast is forecast to strengthen into a tropical storm later today as it moves along the SC coast. The highest rainfall is expected along the coast today with a sharp gradient inland.
634 AM EDT Mon Aug 28 2017 Dry and cool weather will continue as high pressure remains in control.
A persistent flow pattern will continue across the Desert Southwest through much of this week with an expansive mid/upper level high pressure located to our north across the Great Basin into northern Arizona. Tuesday is looking a little bit better compared to today in terms of convective coverage pushing off the higher terrain into the lower elevations as moisture increases a bit compared to today.
447 AM CDT Mon Aug 28 2017 Today through tonight: Tropical Storm Harvey is forecast by the National Hurricane Center to drift southeast into the Texas coastal waters in the near term before lifting slowly north due to influences from the strong trough digging southward through the Midwest. Going into tonight, expect a drop-off in rainfall potential over the ArkLaMiss similar to experienced last night as significant convective rainfall tends to focus a little more closely to the cyclone center. However, lift for light to moderate rainfall may increase some, especially along/south of the Highway 84 corridor as we go through tonight.
307 AM PDT Mon Aug 28 2017 A strong ridge of high pressure centered over the Great Basin will bring near record heat to much of the central California interior through Tuesday. Strong high pressure centered over the Great Basin will continue to keep well above normal temperatures across the region today and Tuesday.
139 AM EDT Mon Aug 28 2017 WV imagery and RAP analysis indicated a mid/upper level low near KDLH, resulting in cyclonic srly flow through the cwa. Southeast winds to near 30 knots late today will diminish to 15 to 25 knots tonight as low pressure weakens and sags to the south.
Diurnal convection north of the trough over the Nature Coast expected to wane by midnight but rounds of convection continues to develop and wrap into the low level convergent zone from off the Gulf into the Suncoast and SW FL where flooding remains a concern overnight and again tomorrow.
330 AM CDT Mon Aug 28 2017 08Z WV imagery showing northwest flow in place around pronounced western CONUS ridge. This will leave a pleasant day in store with continued drying as a strong persistent high pressure ridge expands into the area. Models are still in agreement with keeping an upper ridge to the west of the central plains with upper troughs moving across the Great Lakes and northeast. Weak surface ridging is progged to remain over the area through mid week keeping relatively dry air over the region.
402 AM CDT Mon Aug 28 2017 Upper level ridge remains over the western US. Upper ridge will shift into the western Dakotas by Wed night. Upper level trough over WI will move away from the area. Another upper level trough over the Northwest Territories will move into eastern Canada and amplify by Wed. System will bring a cold front to the forecast area Tue night into Wed.
546 AM CDT Mon Aug 28 2017 Most readings are in the lower 70s, both temps and dew points under clouds making it muggy.
An upper level low over western Lake Superior is forecast to drop southeast into northern Illinois on Monday. The low should be centered over northwestern Indiana by 12Z Tuesday. As a result, we will keep rain chances no higher than 30 to 40 percent across most of the area, with the highest chances (50%) over southwest Indiana and the Kentucky Pennyrile. The trough will be slow to completely clear the area, so a slight chance for showers will linger into Tuesday across eastern portions of the forecast area. Highs will generally be in the lower to mid 80s through Tuesday.
The upper level ridge over the area will dominate the pattern today with very warm temperatures. Expect a brief change in the pattern with an upper trough approaching on Tuesday then pushing inland Wedensday. This will lead to a few degrees cooling but overall high temperatures will still be around 10 degrees warmer in the Rogue Valley. This trough however is expected to cause fire weather concerns with gusty winds, strongest east of the Cascades but potentially affecting west side valleys as well.
322 AM CDT Mon Aug 28 2017 A cold front will move across the region Today with little fanfare.
658 AM EDT Mon Aug 28 2017 A ridge of high pressure will remain over Pennsylvania through tonight. A weakening upper low over the Midwest will lift through the region by the middle of the week, as a potential tropical storm along the Carolina coast tracks out to sea well south of Pennsylvania.
342 AM MDT Mon Aug 28 2017 An upper level high will remain centered over the Great Basin with generally dry nnw flow aloft over nrn CO. Once again there may be just enough moisture for a few aftn storms over the higher terrain and possibly across the Palmer Divide. As for highs 850-700 mb temps rise a few degrees by aftn so expect highs will be 2 to 3 degrees warmer than yesterday.
602 AM EDT Mon Aug 28 2017 Aviation A slow moving low pressure system will track through Lower Michigan over the next couple of days. The clouds over the next couple of days will likely hold back the high temperatures a few degrees.
1150 PM MDT Sun Aug 27 2017 A cold front that moved south across Wyoming overnight brought extensive smoke from ongoing wildfires in Montana and Idaho on north to northwest winds. The front will wash out, as the ridge over the Desert Southwest and Great Basin builds north and east across Wyoming Monday. Late Monday afternoon and evening, mid and upper level moisture coming up the west side of the high pressure ridge over the Desert Southwest and Great Basin, will move into western Wyoming and spread east.
254 PM CDT Mon Oct 23 2017 Mid/upper level low pressure is currently diving southeastward over south central Canada and the upper Midwest. The lowest relative humidity values have remained above 20 percent, but low enough to cause very high fire danger this afternoon. There is not much change in the overall pattern as the mid/upper low digs over the Midwest, which means that wind speeds will be similar for tomorrow.
1252 PM CDT Mon Oct 23 2017 A cold front currently over northern Neb will rapidly drop south across the forecast area during the morning hours. Tonight-Wed: This secondary shot of cooler air will lead to slightly cooler than normal temps for tonight through Tue.
This should allow for a cold night as compared to last nights, with low temperatures dropping into the upper 20s/lower 30s for the lower elevations, with mainly 20s and teens for the high mountains and valleys. upper ridge will nudge eastward on Tuesday which will decrease winds aloft over the mountains. This could yield some near critical fire weather conditions, but with the cooler temperatures this should keep RHs just shy of criteria.
217 PM PDT Mon Oct 23 2017 Expect mild, dry conditions through the week, as high pressure builds into the Pacific Northwest.
301 PM MDT Mon Oct 23 2017 Gusty northwest winds were prevalent over much of the area this afternoon, due to a fairly tight pressure gradient in between the upper level ridge along the west coast and a fast moving upper level trof moving through the northern Plains. This upper level ridge is expected to build over the region during the next couple of days and result in milder conditions.
404 PM CDT Mon Oct 23 2017 A cooler dry day across the forecast area as high pressure begins to work into the region. Drier and cooler air behind the cold front will continue to filter into the region. You will definitely be able to feel the difference in temperatures Tuesday night as temperatures should drop into the lower 40s and maybe into the upper 30s across the northern portions of the forecast area.
1237 PM CDT Mon Oct 23 2017 High pressure will be reinforced overnight allowing for northwest winds to increase to around 10 knots by daybreak and 15 to 20 knots with higher gusts on Tuesday. /issued 1001 AM CDT Mon Oct 23 2017/ High pressure at the sfc continues to settle in over TX under NW flow aloft.
1234 PM CDT Mon Oct 23 2017 A couple potent mid/upper troughs are in the vicinity of the forecast area this morning.
Showers and isolated thunderstorms will continue to move eastward along/ahead of a cold front that currently stretches from just east of TLH through southwest GA. Showers and isolated storms will gradually end from west to east today as the cold front moves across our area.
Strong north winds continue across SW KS early this afternoon, after the latest dry cold frontal passage this morning. Despite the clear sky and dry air, winds are expected to keep temperatures from falling too far Tuesday morning, with lows ranging from the mid 30s west to the lower 40s east.
Showers and a few thunderstorms will be possible through the rest of the day and into tonight as a cold front approaches.
At the surface, a reinforcing cold front is now draped through the Midwest and into southern Oklahoma. Tuesday will be 10-15 degrees cooler for most of the area thanks to the dry cold frontal passage overnight.
247 PM MDT Mon Oct 23 2017 Upper level analysis shows a trough over the eastern CONUS and a ridge over the west. The upper trough and jet will shift eastward on Tuesday, as upper ridging spreads over the central CONUS.
A cold front that was accompanied by widespread showers, with locally heavy downpours and gusty winds during the overnight had translated well east of the forecast area. The partially closed upper trough currently moving across our region will become absorbed back into the broad long-wave trough as it deepens in the Midwest and central Plains region today. A reinforcing short wave will push the trough far southward into the northern GOM. Without sufficient moisture advection ahead of this next trough/front tonight, rainfall does not look like a possibility.
High pressure will build then remain over the western U.
The plains cold front will push west thru gaps in the central mt chain and generate a period of east canyon winds in the Rio Grande Valley overnight. Dry, fall weather is here to stay with a couple cold fronts forecast to push through. The first cold front, a backdoor front, will push down the Eastern Plains later today then progress west to near the Continental Divide tonight.
1116 AM MDT Mon Oct 23 2017 Low amplitude trough sits across the central to western CONUS with a strong wave pushing across the northern Rockies into the northern Plains.
As the wave gets closer, favorable orographics looks to be able to squeeze out some precipitation, maybe an inch at the highest elevations, and some flurries down to 8,500 feet for the northern mountains. Temperatures look to be a few degrees warmer than seen yesterday. Tuesday, high pressure firmly builds in to the western half of the United States bringing widespread sunshine and warm temperatures.
1228 PM CDT Mon Oct 23 2017 A cold front is presently pushing through the James River Valley very early this morning and should be through the entire CWA by 13Z. Otherwise, an upper level trough will deepen over the central CONUS today, and with cold air advection behind the aforementioned front, rapid surface pressure rises, and winds increasing to 40 to 50 kts at the top of the mixed layer, it will be a windy day. Even so, by later in the night winds will begin to increase again as the gradient tightens in response to a rapid intensification of low pressure over the Great Lakes area.
High pressure will remain in control through the short term in some way, shape, or form. Current high over us today will quickly be absorbed by another high pressure sinking southward on the leeside of the Rockies later tonight and tomorrow. This should help keep winds northerly and should continue to filter in drier and perhaps a touch cooler air through the short term period. As the high moves southward from the eastern Rocking into the TX panhandle region a decent pressure gradient will set up Tuesday increasing northerly surface winds. With the higher winds expect elevated risk for rip tides along area beaches Tuesday and Tuesday evening.
A cold front will begin to move through the area late this afternoon, and progress south of area terminals overnight. /issued 333 AM CDT Mon Oct 23 2017/ A broad upper trough is over the Northern Plains and Upper Midwest and extends southward towards the Gulf Coast states. Winds will start to come around to the north today as a cold front approaches the area. On Tuesday, the upper trough deepens and shifts a little more to the east.
1239 PM CDT Mon Oct 23 2017 /18Z TAFS/ Main concern will be with the cold frontal passage shifting the wind to the north. A weak cold front will move through the area this afternoon. The region will be under the influence of dry northwest flow aloft, as a deepening trough over the Mississippi River valley remains to our northeast. At the surface, an exiting high pressure system will keep the region under weak southerly flow throughout the day. A weak cold front will move through the area by mid afternoon, beginning in the Big Country, then moving to the south and east.
317 PM CDT Mon Oct 23 2017 Cold front stretching from southeast Iowa through the southwest corner of Missouri into Oklahoma will continue moving east-southeast tonight. The trof forcing this front through the region will continue to deepen across the Mississippi Valleys tonight and Tuesday. The deepening trof will also help to spread clouds south into our area from the Upper Midwest tonight and Tuesday morning. Isolated to widely scattered showers are possible as the trof continues to strengthen, primarily over our Illinois counties due to steepening mid-level lapserates and frontogenesis. Temperatures will be around 10 to 15 degrees cooler tomorrow in the wake of the front. Carney The deep elongated area of low pressure/trough covering the center of the CONUS will finally move east of the area Tuesday night with clearing conditions expected.
A strong upper level ridge will establish itself from Baja California Sur to Oregon. This suggested that most of the areas will see even warmer conditions than on Monday. The warmest locations will be in southern Mendocino County, with highs in the low to mid 90s in Ukiah, Hopland, and Potter Valley. Trinity County will be slightly cooler, with highs in the low 80s. If the fog lingers through the morning, then it will reduce the amount of daytime heating those places get and thus slightly cooler daytime temperatures. The ridge of high pressure will then park itself over the West Coast of North America.
A much cooler pattern will remain established for the most part of the near term as a chilly batch of Canadian air works its way south through the Plains and into the lower OH Valley region Tuesday and Tuesday night.
Latest mesoanalysis as of 18Z shows the cold front stretching from Apalachee Bay northward across the FL Big Bend into south central GA. A few showers/isolated storms will linger across the eastern FL Big Bend during the early evening, but will likely end around sunset as the cold front continues moving east/southeast of our area. Much cooler and drier air will move into our area overnight in the wake of the front, with lows dropping into the 50s across our area by Tuesday morning.
1041 AM PDT Mon Oct 23 2017 Expect mild, dry conditions through the week, as high pressure builds into the Pacific Northwest.
311 PM MDT Mon Oct 23 2017 High pressure at the surface and aloft are building over Colorado this afternoon and tonight which will result in a continuation of dry and seasonal weather. The northerly flow will be bringing in cooler air, but as heights gradually rise, surface temperatures will be warming a few degrees. The clear skies and dew points in the lower 20s will allow overnight temperatures to drop to the lower 30s on the plains, and cooler at higher locations. This will lead to the higher mountain ridges being the main places to see any gusty winds.
Winds will be the main concern as a cold front moves through the area later today causing strong NW winds for much of the TAF period. A cold front will push into AR Monday evening and overnight and bring a northwest wind at 10 to 20 mph with some gusts to near 25 to 30 mph at times. / Issued 346 AM CDT Mon Oct 23 2017 Main concerns in this forecast cycle are cooler temperatures, elevated winds ahead of and behind the cold front, while an overall dry forecast. Currently the upper low pressure center continues to spin over northeast AR, while rotating clouds and some light rain or sprinkles over northern AR. The cooler and dry air mass was filtering in over AR, with dewpoint temperatures in the 40s to lower 50s, while temperatures in a similar range.