Aikyam-Lab/Synoptic-Bench huggingface dataset:
In the drier regime, there will only be a slight chance for convection this afternoon, and it will be limited mainly to the higher Cumberland Plateau terrain.
North of this boundary, east-southeasterly surface flow is pooling dewpoints in the lower to mid 50s while temperatures are rising into the lower to middle 80s this afternoon. There is currently little to no convective inhibition present, although convective development is currently being limited by the subsidence aloft from the large ridge in place over the Rockies and western portions of the high plains. Expect the favored area of development to lift northeast out of the area by 08Z with dry conditions to continue persisting through the remainder of the overnight hours and through the day on Thursday as the axis of the upper ridge moves east over the high plains.
417 AM CDT Thu Jun 1 2017 Today through Tonight: Ridging aloft will continue through today but the upper ridge will get suppressed on Thursday as a front pushes into the TN valley.
326 AM EDT Thu Jun 1 2017 Cold front overnight. High pressure Thursday and Friday.
Upper ridge of high pressure meandering over Colorado this afternoon along an axis running from northwest to southeast Colorado. Steering flow under ridge is very light, only about 5-15 knots. As the disturbance moves through the ridge over Colorado, it weakens and, therefore, doesn't look as strong tomorrow over Colorado as it does over New Mexico today. Look for highs in the 70s for the high valleys, and upper 70s to mid 80s for the plains.
342 AM CDT Thu Jun 1 2017 RADAR and satellite data indicate a vorticity center spiraling just to the north of Abilene, with what appears to be a weak trough axis extending from the vort center east-southeastward across North and Central Texas. Scattered showers and storms continue to lift slowly northward this morning in the vicinity of the trough, and will most likely continue across the I-20 corridor later this morning, approaching the Red River around midday. Isolated storms will persist well into the evening, with the better chances occurring across the northern counties near the upper trough axis.
629 AM EDT Thu Jun 1 2017 A cold front moves through today with thunderstorms. Low pressure over the Canadian Maritimes Friday into the weekend brings northwest flow with a chance of showers. Storms will be forming along a cold front moving through from northwest to southeast, moving through the North Woods midday and to Downeast late afternoon into early evening. Only modest CAPE, but pretty good upper level dynamics with a potent upper level low just off to the northwest. Areas of fog this morning expected to lift into a stratus deck, with the stratus deck breaking up as the cold front moves through. Partly to mostly cloudy tonight and cooler with isolated showers. Expect much less low clouds and fog than previous nights due to offshore flow and a cooler, drier airmass.
Satellite imagery shows a weak low pressure circulation southeast of Yuma AZ this morning and moving eastward, and a gradient of higher precipitable water across areas along and north of the Mogollon Rim. Thus it appears that sufficient moisture and instability will be present this afternoon for another round of showers and thunderstorms, with scattered coverage across the high terrain along and north of the Mogollon Rim and isolated storms over the lower elevations of northeast AZ. Expect pleasant weather this weekend as high pressure moves through the region.
427 AM EDT Thu Jun 1 2017 High pressure has brought quieter and cool conditions to the area overnight. High pressure will then take hold tonight with skies clearing off. Fog will burn off Friday morning with a pleasant day anticipated as high pressure remains the dominant weather feature over the region.
244 AM EDT Thu Jun 1 2017 Weak surface cold front is slowly moving in from the northwest and has pushed past the KY/IN border over the past couple of hours, with high pressure sliding in behind it. Should see the weak cold front continue to push south through the rest of the morning and surface winds switch to the northwest. Mainly quiet short term period with dome of high pressure in control behind the cold front. Dome of high pressure will begin to drift east of the region over the weekend allowing return flow out of the south.
Scattered showers/storms expected to develop and move across portions of the area today and tonight, with the highest potential in parts of S OK & western north Texas. With the low confidence on how things will evolve, will keep PoPs in the chance category. with upper ridge eventually developing over the western U.
308 AM EDT Thu Jun 1 2017 High pressure will build into the Ohio Valley today. The high will remain across the region tonight into Friday.
Satellite imagery shows the mid level short wave trough from northwest Texas to the Mid-Coast region with drier air in the mid levels over much of South Texas. But adequate moisture remains in the lower levels. Weak mid level ridge along with area of drier air will move into the area tonight. NAM and GFS indicate a weak mid level short wave trough could move out of Mexico into the Brush Country on Friday.
116 AM EDT Thu Jun 1 2017 High pressure will provide quiet weather today and through most of Friday.
500 AM EDT Thu Jun 1 2017 High pressure crosses today through Friday.
233 AM PDT Thu Jun 1 2017 A weak low pressure trough will continue a deep marine layer and areas of drizzle this morning before moving out today. Higher pressure will bring warmer weather Friday through the weekend with less coastal cloudiness. The trough will move out of our region to the southeast and allow a ridge of high pressure to timidly build today and Friday. The higher pressure aloft and a touch of offshore flow will shallow the marine layer tonight such that low clouds might not even make it into the Inland Empire.
Temperatures at 3 am are generally in the lower and middle 70s.
152 AM EDT Thu Jun 1 2017 Low pressure across Canada will cause a cold front to cross the area late tonight. A weak area of high pressure will be across the area late Thursday.
The region remains in a broad upper level trough Thursday with another short wave moving through. By Friday a drier westerly flow aloft will result in partly cloudy skies and warmer temperatures.
325 AM EDT Thu Jun 1 2017 Broad cyclonic flow will continue through the weekend as an upper level low pressure system dominates our weather. Showers return to start the work week as another low pressure system moves in from the west. Cold air advection will bring cooler air with 850mb temps dropping to -1C to +2C supporting highs in the low to mid 60s. Late in the afternoon and into the evening hours a vort max will swing through the base of the upper level low and should provide enough energy and moisture to see some isolated to scattered showers mainly along the international border. Temps will remain on the below normal side throughout as overnight lows are expected to be in the low to mid 40s tonight and only warm to the upper 50s to low 60s on Friday.
A couple of low pressure systems moving across the region through Friday morning will keep the weather pattern unsettled.
529 AM CDT Thu Jun 1 2017 Upper low continues to spin over northeast Ontario early this morning, with associated fast-moving waves around it passing through the Great Lakes region. Evening model suite continues to favor MCS development over Iowa tonight, but extension further southeast along the incoming upper ridge is not as clear cut. Expansion of the convective complex is expected later Friday night along the warm front lifting northward, although Wisconsin and northeast Illinois are more in line for this.
630 AM EDT Thu Jun 1 2017 High pressure will build into the Ohio Valley today. The high will remain across the region tonight into Friday.
350 AM EDT Thu Jun 1 2017 High pressure will move into the Ohio Valley today.
654 AM EDT Thu Jun 1 2017 High pressure crosses today through Friday.
A trough of low pressure over eastern Washington will continue to usher in pieces of energy into the Northern Rockies today. An upper level trough will. As the day progresses warm temperatures and increased instability from the approaching trough the widespread showers will become more convective. Dry but cooler temperatures will occur Friday as the upper trough moves into Alberta, Canada.
High pressure over the eastern USA will control Indiana weather into Friday, when a weak front should arrive over our state from the north.
L/W trough will dig along the eastern seaboard through the end of the week with the southern extent of the trough extending over the Florida peninsula. This will suppress the U/L ridge currently over south Florida and Cuba to the western Caribbean. Although there has been much talk about the beginning of the rainy season with the onset of higher pops over the next several days, this has more to do with U/L troughing over the region creating lower heights eliminating large scale subsidence. However this is not the typical sea breeze driven afternoon/evening thunderstorm activity which develops under a strong subtropical ridge with relatively light U/L winds one would expect with the Florida rainy season. High pressure will create relatively benign conditions across the waters for the next several days.
412 AM EDT Thu Jun 1 2017 Latest water vapor imagery shows a large dome of upper level high pressure positioned south of Bermuda, slightly further east than 24 hours ago. Along the coastal regions, maximum temperatures are forecast in the upper 80s to near 90 degrees, slightly warmer than the norm.
513 AM EDT Thu Jun 1 2017 High pressure will provide quiet weather today and through most of Friday.
The showers will continue to expand through the morning and especially this afternoon as an upper trough in Oregon moves into SW Idaho this afternoon. The trough will move to our east tonight with showers and thunderstorms ending by midnight. A weak upper ridge will develop across the region on Friday for mostly clear skies, light winds, and a return to above-normal temperatures.
407 AM EDT Thu Jun 1 2017 High pressure will provide quiet weather today and through most of Friday.
Tropical cyclone formation is not expected during the next five days. The weather early this morning is warm and muggy with current air temperatures in most Keys island communities holding in the lower 80s, with dewpoint temperatures in the mid 70s. On the large scale, deep ridging persists, with prevailing weak thermodynamic instability and weak low-level convective inhibition. However, the deep ridge will weaken slowly, but gradually, during the next few days, and this should allow the moist layer to deepen while boundary-layer flow becomes less difluent.
255 AM MST Thu Jun 1 2017 Warm and dry conditions will persist through the weekend across the lower deserts, with a slight chance of afternoon thunderstorms over the mountains of far eastern Arizona. Even the low level flow responded to this dynamic system with a 30 knot 700 mb southerly wind at Yuma.
315 AM CDT Thu Jun 1 2017 Weak diffuse boundary just to the northeast of KSLN continues to slowly lift back to the NE as a slow moving warm front. Prefer to go a little on the warmer side for max temps than guidance suggests.
551 AM EDT Thu Jun 1 2017 High pressure will move into the Ohio Valley today.
We will see a fairly typical summertime pattern across the Gulf Coast with no notable dips in the jet stream and the Bermuda high ridging westward across Dixie. Onshore flow around the western periphery of this ridge will keep generally scattered PoPs across the region.
329 AM EDT Thu Jun 1 2017 A cold front moves through today with thunderstorms. Low pressure over the Canadian Maritimes Friday into the weekend brings northwest flow with a chance of showers. Storms will be forming along a cold front moving through from northwest to southeast, moving through the North Woods midday and to Downeast late afternoon into early evening. Only modest CAPE, but pretty good upper level dynamics with a potent upper level low just off to the northwest. Areas of fog this morning expected to lift into a stratus deck, with the stratus deck breaking up as the cold front moves through. Partly to mostly cloudy tonight and cooler with isolated showers. Expect much less low clouds and fog than previous nights due to offshore flow and a cooler, drier airmass.
An upper level ridge starts to build to the west and with the sunshine, temperatures will warm into the 80s. The south winds will also bring some moisture and as the ridge moves to the east an upper level wave moves into the western part of the area.
250 AM EDT Thu Jun 01 2017 A weak cold front to our NW will push through the region today. Behind this front, weak high pressure will build into the area tonight and Thursday. High pressure is forecast to be over NC Friday into the weekend. An isolated shower is possible this morning with the lingering trough nearby. A weak cold front will slowly push into the Coastal Plain this afternoon, then offshore this evening. However, dew points in the Coastal Plain are still forecast to be in the lower to mid 60s along and ahead of the weak cold front. This will be courtesy of weak high pressure that will be over the state.
159 AM EDT Thu Jun 1 2017 High pressure will build in later tonight and Thursday to provide mostly dry weather. Weak high pressure will briefly nose into NY and PA, causing winds to go light and clouds to break up. Temperatures mainly in the lower 50s with normally cold spots in the rural areas reaching the upper 40s. Temperatures roughly 5-10 degrees cooler today in the mid-60s. Moisture is limited, but the NAM and GGEM continue to hint at a possibility of light showers, or sprinkles, across the northern half of the area where forcing and 1000-500 mean layer RH appears to be the highest. which translates to the low-mid 40s in most areas, but near 50 for parts of NEPA.
High pressure ridge axis has migrated a little northward and will be located across central FL. Unlike yesterday, there are no mid level impulses approaching the area and so mid level temps are forecast to be slightly warmer at -7C to -8C. Considerable high clouds will occasionally filter the sunshine but high temps should still reach the lower 90s most areas, except upper 80s coast and a few mid 90s over the interior.
A cold front will drag across northern Nevada today, bringing slightly cooler weather with scattered showers and isolated thunderstorms. A low pressure trough will move through the state today. Showers and thunderstorms are expected to develop along a cold front as the trough axis passes through. However clearing skies will occur overnight as we move into a short term cooler regime under mild ridging.
A trough of low pressure over eastern Washington will continue to usher in pieces of energy into the Northern Rockies today. An upper level trough will. As the day progresses, warm temperatures and increased instability from the approaching trough will cause the widespread showers to become more convective. Drier weather and cooler temperatures will occur Friday as the upper trough moves into Alberta, Canada.
343 AM EDT Thu Jun 1 2017 High pressure will move across our area today and tonight causing fair weather with seasonable temperatures.
1224 AM CDT Thu Jun 1 2017 Weak cool front/trof axis has finally shifted south of our area early this evening with quite a contrast in air mass from north to south. Dew points dropping with cooler and drier air filtering in. High pressure will remain in control overnight. Late Thurs night and into Friday, warm frontal development possible with boundary moving back northern into area.
108 AM EDT Thu Jun 1 2017 A cold front approaches from the west tonight and crosses the region Thursday. Low pressure in Quebec will slowly drift north of the area Thursday night into Friday. This moisture will also serve to keep overnight temperatures in the lower 50s in most locations. This is likely overdone, but with the upper low poised just to our west, expect we'll have decent diffluence aloft as well as low freezing levels. Highs will be quite a bit warmer than today for most spots away from the coast will see mid and upper 60s. A low over eastern New Brunswick and an upper level low over Hudson Bay will be the weather makers to start the period.
251 AM CDT Thu Jun 1 2017 As with each of the past few nights, showers/isolated storms are developing as spokes of energy aloft (vorts) rotate across the lower Ohio river valley, rounding the base of the mean long wave vortex/trof. The difference is dew points, with near 60F isodrosotherms across our southwest, holding into the PM hours, while in our northeast, northeasterly mix down will drive isodrosotherms down into the lower 50s.
Dry and warmer anticipated for the remainder of the week.
Weak surface cold front is slowly moving in from the northwest and has pushed past the KY/IN border over the past couple of hours, with high pressure sliding in behind it. Should see the weak cold front continue to push south through the rest of the morning and surface winds switch to the northwest. Mainly quiet short term period with dome of high pressure in control behind the cold front.
301 AM EDT Thu Jun 1 2017 High pressure has brought quieter and cool conditions to the area overnight. High pressure will then take hold tonight with skies clearing off. Fog will burn off Friday morning with a pleasant day anticipated as high pressure remains the dominant weather feature over the region. After that, a large trough of low pressure in the upper atmosphere will meander slowly across the Great Lakes region and into New England. A series of short waves are then forecast to move around the periphery of the upper low, each of which will bring chances of showers and thunderstorms to the area.
Small hail, brief reductions in visibility and ceiling during downpours, and gusty downburst winds will be the primary aviation hazards with storms initially favoring the higher terrain from the continental divide eastward to the central mountain chain and eventually filling into adjacent areas into the evening. An upper level trough will pass north of New Mexico Thursday and Thursday night allowing drier air to funnel into the state from the west.
228 AM PDT Thu Jun 1 2017 A weak low pressure system moving through California will bring cool weather and extensive coastal clouds through Thursday. Higher pressure will bring warmer weather Friday through the weekend with less coastal cloudiness.
515 AM EDT Thu Jun 1 2017 High pressure crosses today through Friday.
246 AM CDT Thu Jun 1 2017 Weak upper level ridging will develop over the high plains today with little in the way of low level convergence. A weak upper level trough will approach the high plains on Friday.
Variable winds this morning due to surface ridging will eventually trend to the northwest at 10 to 15 knots today. Meanwhile, weather today should be nice with high pressure providing very dry conditions and much less wind than the past few days. Frontal boundary will remain over the Saginaw Valley and Thumb Friday, but anticipate only a limited coverage of showers/tstorms as we lose jet support and as instability becomes more limited with the upper ridge to our west sliding closer and warming temperatures aloft. Max temperatures should warm a few degrees again, reaching the low 70s in the northern Thumb, and mid to upper 70s elsewhere.
145 AM EDT Thu Jun 01 2017 A weak cold front will push southeastward today. Behind this front, weak high pressure will build into the area from the later today and Thursday. High pressure is forecast to remain in control Friday into the weekend. A weak cold front will slowly push into the Coastal Plain this afternoon, then offshore this evening. However, dew points in the Coastal Plain are still forecast to be in the lower to mid 60s along and ahead of the weak cold front. Rather tranquil weather pattern through Friday night as deep upper level low over northern New England gradually pulls away to the east-northeast.
The large upper-level ridge of high pressure will easily draw the hot continental air mass up from the south today as the ridge axis moves over the eastern half of Montana. Flow aloft turns SW this afternoon with the approach of a cold front from the west. The best model consensus directs these storms northeast as they ride the cold front through our CWA late tonight through Friday morning.
Meanwhile, weather today should be nice with high pressure providing very dry conditions and much less wind than the past few days. Frontal boundary will remain over the Saginaw Valley and Thumb Friday, but anticipate only a limited coverage of showers/tstorms as we lose jet support and as instability becomes more limited with the upper ridge to our west sliding closer and warming temperatures aloft. Max temperatures should warm a few degrees again, reaching the low 70s in the northern Thumb, and mid to upper 70s elsewhere.
233 AM CDT Thu Jun 1 2017 Upper low continues to spin over northeast Ontario early this morning, with associated fast-moving waves around it passing through the Great Lakes region. Evening model suite continues to favor MCS development over Iowa tonight, but extension further southeast along the incoming upper ridge is not as clear cut. Expansion of the convective complex is expected later Friday night along the warm front lifting northward, although Wisconsin and northeast Illinois are more in line for this.
Upper air pattern consists of a 500 mb ridge over the northern plains, a deep trough over the ern U. and troughing in the desert sw 12z Fri. The ridge makes it to the upper Great Lakes 12z Sat as a trough moves into the northern and central plains with this trough then digging into the upper Great Lakes Sat night. In the extended, GFS and ECMWF show a 500 mb trough over the upper Great Lakes 12z Sun with a ridge over the Rockies. This trough digs more into the area 12z Mon with the ridge moving into the western high plains 12z Tue. The ridge then moves into the plains 12z Wed and into the upper Great Lakes late Wed.
This activity will move slowly inland with the low level convergence zone through the morning hours into early afternoon.
649 AM EDT Thu Jun 1 2017 High pressure will move into the Ohio Valley today.
Mostly clear skies with slightly cooler air today, then hot and dry conditions redevelop for the weekend and remain through the foreseeable future.
342 AM CDT Thu Jun 1 2017 500 mb ridge building over the area today. Only damper could be some high clouds moving east into the upper ridge. Main upper level low will move northeast into central Saskatchewan Thu-Fri while a sfc front/trough moves east into central ND/western Manitoba Friday aftn. Model progged dew pts in the upper 60s/around 70 too high but will see I do think dew pts in the lower or maybe mid 60s ahd of front in a narrow zone just ahd of boundary.
With the ridge aloft moving off to our east, low and mid level moisture will begin to increase across our western counties, setting the stage for isolated to scattered showers and thunderstorms to develop in the afternoon and evening along and west of Interstate 25. Slightly cooler at most locations.
246 AM PDT Thu Jun 1 2017 High pressure will build into the region, bringing dry and warming conditions through the end of the week.
Showers and thunderstorms still possible this afternoon in the higher elevations of the ID- WY border region, and could linger beyond midnight. For Wed/Wed night/Thu, high pressure will again dominate the atmosphere, but that will allow strong warming and the return of rising rivers. On Thu night, this upper level ridge will start to break down, with increasing southerly wind and a slight risk of thunderstorms in the extreme western edge of the forecast area. Colder temperatures will follow behind the cold front, bringing snow as low as 6500 feet, but warming the next day will likely eliminate a lot of the accumulation.