Aikyam-Lab/Synoptic-Bench huggingface dataset:
Upper level ridge axis centered over Arizona persists as the dominate synoptic feature. Clear skies and dry conditions will allow overnight temperatures to fall back into the low 70s. Dew points rise from the mid 60s into the low 70s. Areas inland not impacted by storms will see temperatures reach the mid 90s while the coastline should settle in around the low 90s for afternoon highs. Upper level high pressure remains stationary over the Desert Southwest through the rest of the forecast. The upper level high pressure will help to keep temperatures around to a bit above seasonal through the period.
238 PM EDT Fri Jul 26 2019 High pressure will remain over Pennsylvania today and Saturday.
314 PM EDT Fri Jul 26 2019 High pressure should maintain mainly dry and seasonable weather through the weekend.
342 PM CDT Fri Jul 26 2019 The midlevel atmospheric pattern across the US is similar to that of yesterday, with a midlevel ridge of high pressure positioned over the southwestern portion of the country. A midlevel closed low circulation continues to slowly traverse south-central Canada with another midlevel storm system just off the western shore of British Columbia. Saturday's weather is expected to mimic today's with the exception of afternoon temperatures possibly being a degree or two warmer in response to low level WAA with southerly surface winds.
242 PM CDT Fri Jul 26 2019 WV imagery shows broad scale ridge over western CONUS with closed upper low beginning to push east of Lake Winnipeg. Sunny skies over most of the state, with some clouds associated with the upper low brushing northern and northeastern portions of the state. Global models in good agreement in short term with upper low filling as it progresses eastward to south central Ontario by Saturday morning as an open wave.
317 PM CDT Fri Jul 26 2019 Radar is indicating some reflectivity returns along the highway 283 corridor and eastward, which will likely dissipate before sunset.
VFR expected at all sites over the next 24 hours as high pressure brings mainly clear skies and light winds.
/Tonight through Saturday night/ Relatively dry airmass remains in place, as evidenced by KSHV morning sounding, under weak nly flow aloft sandwiched between the upper ridge centered over AZ/NM and weak troughing over the ern CONUS. Loss of heating should deflate any convection, leaving us with fair skies and mins in the low 70s.
302 PM EDT Fri Jul 26 2019 The stalled frontal boundary in place across the northern zones will continue to dissipate tonight as high pressure at the surface and aloft build back over the area as a weak trough remains just offshore of the GA coast. Temperatures will also transition back to near normal, with highs in the lower 90s and lows generally in the mid to upper 70s each day. Winds will be transitioning tonight and Saturday to a more NE flow as high pressure builds back to the north.
The ridge axis has pretty much moved as far east as Livingston. As the ridge moves east, this is going to allow monsoonal moisture to move up into the area.
303 PM EDT Fri Jul 26 2019 Continued high pressure will keep sunny skies and warmer temperatures over NY and PA through the weekend. Temperatures will fall into the lower-60s. Temperatures will rise into the lower and middle-80s on Saturday under a flat ridge. High pressure will move offshore with southerly flow on the backside of the high leading to increasing heat and humidity. With increased mugginess, lows will be warmer in the mid and upper 60's.
319 PM CDT Fri Jul 26 2019 The pleasant conditions will continue across the region on Saturday, under the influence of high pressure aloft, with sunny skies and light southerly winds.
127 PM EDT Fri Jul 26 2019 High pressure should maintain mainly dry and seasonable weather through the weekend. With the early afternoon update, brought in isolated showers/storms slightly earlier across the ridges as a couple of showers have already popped. Low level ridging should maintain mainly dry weather through the weekend. The exception Saturday is again in the WV/MD ridges where isolated afternoon showers or thunderstorms are possible with weak diurnal instability.
335 PM CDT Fri Jul 26 2019 Mid-afternoon sfc analysis shows our old frontal boundary still meandering off the coast over the nwrn Gulf, while high pressure centered over the srn Appalachians is providing a more erly low- level flow over the forecast area today. This erly flow has resulted in slightly warmer temps/higher dewpoints than the first couple of days post-fropa. Water vapor imagery shows ridging in place over the Four Corners region which is building ewd into the wrn Gulf Coast area. while the previous trof axis is noted extending from the sern CONUS to the n-cntl Gulf. As we move through the weekend, daytime POPs are expected to continue their upward creep as the old front gradually lifts back nwd as a warm front, helping provide better moisture/convective focus.
254 PM CDT Fri Jul 26 2019 Tonight through tomorrow (Saturday): Expect another quiet & slightly cooler than normal night as northerly flow aloft, with low-level return flow remains over the region. Moisture has been slowly on the increase, with dewpoints expected in the low-mid 60s & moisture aloft increasing to near or just over an inch PWs. These look to be possible along & south of the Highway 84 corridor.
1238 PM EDT Fri Jul 26 2019 High pressure should maintain mainly dry and seasonable weather through the weekend. With the early afternoon update, brought in isolated showers/storms slightly earlier across the ridges as a couple of showers have already popped. Low level ridging should maintain mainly dry weather through the weekend. The exception Saturday is again in the WV/MD ridges where isolated afternoon showers or thunderstorms are possible with weak diurnal instability.
Any threat of strong/severe storms should remain reduced due to warmer temps aloft and rather slow cell motions. models are slow to rebuild the wrn flank of the Bermuda Ridge axis. Upstream low/mid lvl moisture lvls are on the low side with H100-H70 mean RH arnd 70pct. Wrn flank of the Bermuda ridge will slowly rebuild acrs central FL, allowing the H100-H70 flow to shift to the south, though H85-H50 steering winds fcst to maintain more of a S/SW component as a persistent troffing pattern over the ern CONUS prevents the ridge axis from lifting north of central FL. Little change in overall sea state as the wrn flank of the Bermuda ridge remains weak and disorganized.
A cold front tonight will bring breezy winds across the region through Saturday. A cold front is still expected this evening and this will increase the surface pressure gradient across the Cascades.
214 PM MDT Fri Jul 26 2019 Current surface map shows high pressure across eastern Montana into western South Dakota.
Aloft, ridging was located west of the area. Overall temperatures look to be slightly warmer than today across the area. With dewpoints in the 60s, heat indices look to be in the low to mid 90s Saturday afternoon.
1247 PM CDT Fri Jul 26 2019 Typical summer weather slated for all areas as strong, massive upr deck high pressure remains sprawled across the roughly the south- western third of the U. The center of the 590-595DM 500-MB high, which has been located over the AZ/NM border during the night, slowly retrogrades as a compact mid-upper cyclone, that is centered over southern Manitoba, scoots E across Ontario tonight, transitioning into a sharp trof as it continues to cross southern Ontario & the southern tip of Hudson Bay on Sat.
SHORT TERM (Now through Saturday Night): The combination of a stalled frontal boundary down to the south, residual outflow boundaries and the sea breeze had aided in some pockets of low- topped showers across the lower-mid valley, along the coast and offshore today. The stalled frontal boundary to the south will gradually lift northward tonight and into Saturday as a warm front, which will allow for winds to veer to the southeast across the region. With the return of the warmer and more humid onshore flow, will go ahead with keeping temperatures along with dew points a few degrees higher compared to today.
/issued 352 AM CDT Fri Jul 26 2019/ Last vestiges of out-of-season cold front dry air will likely get flushed out with today's gulf breeze advance inland later this morning into the afternoon hours. Dewpoints in the 60s across the MS coast into the northshore parishes and SW MS will rise to the lower 70s.
A few showers developed over Cherokee County this afternoon, likely due to orographic lift due to southeast flow being lifted across the mountain ridges in southern Cherokee County. Rain free conditions expected overnight as a deep layer ridge holds over the Lower Mississippi Valley.
Otherwise due to light winds, low temperatures should be a little cooler tonight.
309 PM EDT Fri Jul 26 2019 Updated at 300 PM EDT Fri Jul 26 2019 Upper high pressure is centered over the southwestern United States with strong anticyclonic flow aloft around the high. At the surface, high pressure still dominates with the highest pressures being east of our area.
This is a good radiational cooling pattern, so sided with the slightly cooler MET guidance for lows tonight bringing widespread low/mid 60's. Temp and dew point cross overs do not suggest much fog, but soundings project some saturation in the lowest levels late tonight under the subsidence inversion as temps fall close to dew points. Any fog will quickly burn off Saturday morning with highs a few degrees warmer than today (85-90) as mid level heights rise to around 590 dam. High resolution models suggest isolated showers/storms in the higher terrain during the afternoon and evening.
822 PM EDT Fri Jul 26 2019 Dry weather is expected to last through the weekend as high pressure settles along the Atlantic Coast. Warm temperatures will be observed in the southwest flow behind the high.
Mid level low moving east out of southern Manitoba into southwestern Ontario will provide a source of lift amidst weak instability for widely scattered showers and thundershowers north of the US Hwy 2 corridor this afternoon, mainly near the LOW region. At the surface, a trough extending from near International Falls to near Hubbard County continues to push eastward.
1037 PM EDT Fri Jul 26 2019 Weak high pressure has moved over the Florida Keys and has effectively kept convection to a minimum. No changes to current forecast as high pressure will remain in control over the area tonight. Winds will remain light from the east and northeast through the forecast period as weak high pressure remains over the area.
Winds will be transitioning tonight and Saturday to a more NE flow as high pressure builds back to the north.
Tonight through tomorrow (Saturday): Expect another quiet & slightly cooler than normal night as northerly flow aloft, with low-level return flow remains over the region. Moisture has been slowly on the increase, with dewpoints expected in the low-mid 60s & moisture aloft increasing to near or just over an inch PWs. These look to be possible along & south of the Highway 84 corridor.
726 PM EDT Fri Jul 26 2019 High pressure will remain over Pennsylvania through Saturday.
The region remains in a northerly flow aloft to the east of a ridge centered over the Desert Southwest. Broad surface ridging over the East and Southeast is keeping the rich Gulf moisture down near the coast. surface temperatures were able to be slightly warmer today with mid afternoon temps in the low to upper 80s.
The midlevel atmospheric pattern across the US is similar to that of yesterday, with a midlevel ridge of high pressure positioned over the southwestern portion of the country. A midlevel closed low circulation continues to slowly traverse south-central Canada with another midlevel storm system just off the western shore of British Columbia. Saturday's weather is expected to mimic today's with the exception of afternoon temperatures possibly being a degree or two warmer in response to low level WAA with southerly surface winds.
A rapid warming trend will develop by Saturday as strong high pressure builds over the region.
818 PM EDT Fri Jul 26 2019 High pressure will remain over Pennsylvania through Saturday.
/issued 308 PM CDT Fri Jul 26 2019/ SHORT TERM (Now through Saturday Night): The combination of a stalled frontal boundary down to the south, residual outflow boundaries and the sea breeze had aided in some pockets of low- topped showers across the lower-mid valley, along the coast and offshore today. The stalled frontal boundary to the south will gradually lift northward tonight and into Saturday as a warm front, which will allow for winds to veer to the southeast across the region. With the return of the warmer and more humid onshore flow, will go ahead with keeping temperatures along with dew points a few degrees higher compared to today.
522 PM EDT Fri Jul 26 2019 High pressure should maintain mainly dry and seasonable weather through the weekend.
Overnight temps will settle into the low 70s under partly cloudy skies.
512 PM EDT Fri Jul 26 2019 High pressure will remain over Pennsylvania through Saturday.
532 PM MDT Fri Jul 26 2019 Current surface map shows high pressure across eastern Montana into western South Dakota.
Updated at 300 PM EDT Fri Jul 26 2019 Upper high pressure is centered over the southwestern United States with strong anticyclonic flow aloft around the high. At the surface, high pressure still dominates with the highest pressures being east of our area.
1039 PM EDT Fri Jul 26 2019 Dry weather is expected to last through the weekend as high pressure settles along the Atlantic Coast. Warm temperatures will be observed in the southwest flow behind the high.
Radar is indicating some reflectivity returns along the highway 283 corridor and eastward, which will likely dissipate before sunset.
Weak upper trough drifting across CWA this afternoon combined with monsoonal flow around 4 corners high will result in a slight chance of a thunderstorm near the Sierra Nevada crest. Afternoon temperatures are running near to or lower than 24 hours ago with greatest cooling in the Delta, due to increased onshore flow with upper trough. Upper wave pushes into the Great Basin Saturday causing ridge axis to discontinuously retrograde over Interior NorCal.
634 PM CDT Fri Jul 26 2019 The pleasant conditions will continue across the region on Saturday, under the influence of high pressure aloft, with sunny skies and light southerly winds.
551 PM CDT Fri Jul 26 2019 Some clouds remain over the north central portions of North Dakota, wrapping around an upper low passing into Ontario. WV imagery shows broad scale ridge over western CONUS with closed upper low beginning to push east of Lake Winnipeg. Sunny skies over most of the state, with some clouds associated with the upper low brushing northern and northeastern portions of the state. Global models in good agreement in short term with upper low filling as it progresses eastward to south central Ontario by Saturday morning as an open wave.
/issued 232 PM CDT Fri Jul 26 2019/ The high pressure aloft that has been dominating our weather recently is now centered just SW of the CWA over the AZ/NM border. The new position of the high will allow a slight moisture increase to our NW and place the CWA in a more northwesterly flow.
715 PM EDT Fri Jul 26 2019 Comfortable conditions are expected overnight thanks to high pressure remaining in place.
There may be some variability in the high clouds (SCT vs.
An approaching front will bring a chance of showers tonight and Saturday along with cooler temperatures. This system will quickly be replaced by another weak ridge allowing for dry conditions to return.
Some clouds remain over the north central portions of North Dakota, wrapping around an upper low passing into Ontario. WV imagery shows broad scale ridge over western CONUS with closed upper low beginning to push east of Lake Winnipeg. Sunny skies over most of the state, with some clouds associated with the upper low brushing northern and northeastern portions of the state. Global models in good agreement in short term with upper low filling as it progresses eastward to south central Ontario by Saturday morning as an open wave.
937 PM CDT Fri Jul 26 2019 A slightly warmer night than 24 hours ago. Surface analysis this afternoon places a ridge of high pressure over the Middle and Lower Mississippi Valleys. Mainly rain free weather is expected tonight into the weekend as high pressure will remain in place across the Lower Mississippi Valley.
1010 PM EDT Fri Jul 26 2019 High pressure will remain over Pennsylvania through Saturday.
Otherwise due to light winds, low temperatures should be a little cooler tonight. By Sunday afternoon, an upper-level ridge builds over the High plains and dominates the region into the weekend.
A secondary northerly push from the main trough over south-central Canada is likely to surge southward to the Continental Divide Sunday. This frontal boundary will separate a relatively moist and a dry airmass, but overall temperatures look to be a tad warmer even north of the front than what occurs Saturday.
257 AM EDT Sat Jul 27 2019 High pressure will hold over the region today and tonight as weak low pressure passes out to sea well south of New England.
140 AM EDT Sat Jul 27 2019 Mostly dry weather is expected to last through the weekend as high pressure settles along the Atlantic Coast. Warm temperatures will be observed in the southwest flow behind the high.
251 AM CDT Sat Jul 27 2019 07Z water vapor imagery showed the center of an upper ridge over southeastern AZ and southwestern NM. Further north within the mean westerlies were a couple of upper lows, one north of Lake Superior and another moving across British Columbia. At the surface, low pressure remained within the lee of the central Rockies with high pressure over the southeastern U. So the high temp forecast is a persistence forecast with readings likely around 90 over eastern KS and into the mid 90s across north central KS. Lows tonight may be a degree or two warmer than this morning as models prog a little stronger pressure gradient.
342 AM EDT Sat Jul 27 2019 Updated at 300 AM EDT Sat Jul 27 2019 Expect another dry day as high pressure continues to control the region. Updated at 340 AM EDT Sat Jul 27 2019 Mid-level ridging will hold sway across the region at the beginning of the forecast period.
Daytime heating produced cumulus/strata-cumulus have faded with the advent of a cooler evening. This feature was in part a southern extent of weak troughing extending from an upper low over Ontario. While the current wx pattern is enjoyable for those of us who harbor a disdain for the typical stifling humidity this time of year, for those of you looking for more 'typical' humid July conditions, they'll be back (sooner rather than later)! Dewpoints through the weekend will inch upward into the lower 60s Saturday and the middle/upper 60s Sunday, with a dry forecast expected both days. Otherwise, expect daytime highs topping out in the lower 90s both days, with Sunday a degree or two warmer than Saturday.
309 AM CDT Sat Jul 27 2019 Latest water vapor imagery and upper air analysis shows a broad/transient mid/upper level ridge over eastern Montana and western North Dakota. With the effective bulk shear vectors (30kt to 40kt) oriented nearly perpendicular to the surface cold front, thunderstorms that do form would favor a discrete mode. Gusty northwest winds (20-35mph) will develop across the west by mid to late afternoon, as the 850mb cold front slides through.
1142 PM CDT Fri Jul 26 2019 Latest surface map indicates high pressure over southwest North Dakota, under broad ridging/subsidence aloft. Some clouds remain over the north central portions of North Dakota, wrapping around an upper low passing into Ontario. WV imagery shows broad scale ridge over western CONUS with closed upper low beginning to push east of Lake Winnipeg. Sunny skies over most of the state, with some clouds associated with the upper low brushing northern and northeastern portions of the state. Global models in good agreement in short term with upper low filling as it progresses eastward to south central Ontario by Saturday morning as an open wave. The low continues to press eastward on Sunday with lingering chances of precip across the east, while a cold front begins to push across the state, located across central ND by 18Z.
317 AM EDT Sat Jul 27 2019 High pressure should maintain mainly dry and seasonable weather today.
The high pressure center has shifted south of the Four Corners today with the pattern starting to flatten over Utah. These will continue to make their way across Utah overnight owing to the deep moisture in place and dynamic lift from the trough. Behind the trough, the flow will turn more westerly and then northwesterly tomorrow.
1253 AM EDT Sat Jul 27 2019 Comfortable conditions are expected overnight thanks to high pressure remaining in place.
/issued 232 PM CDT Fri Jul 26 2019/ The high pressure aloft that has been dominating our weather recently is now centered just SW of the CWA over the AZ/NM border. The new position of the high will allow a slight moisture increase to our NW and place the CWA in a more northwesterly flow. Tomorrow into Sunday the high will begin to shift eastward allowing for moisture to slowly increase at all levels. By Sunday evening the CWA will be on the periphery of the high.
The upper ridge remains to our west with fairly dry air still in place over the area. Look for lows in the 60's again with highs back in the low to mid 90's. A mid level thermal ridge shifts east Sunday pushing temperatures into the upper 90's to near 100.
Aloft, ridging was located west of the area. Overall temperatures look to be slightly warmer than today across the area. With dewpoints in the 60s, heat indices look to be in the low to mid 90s Saturday afternoon. Sunday On Hot and humid with highs in the lower 90s and peak heat indices in the low to mid 90s.
a ridge remains firmly ensconced over the southern Rockies with a long wave trough located over the Appalachians. high pressure was centered from New England southwestward into the lower Mississippi Valley. another short wave moves up and over the western ridge and begins approaching the area.
Radar is indicating some reflectivity returns along the highway 283 corridor and eastward, which will likely dissipate before sunset. A cold front is shown to drop slowly south across the area Sunday night, with possibility of a few thunderstorms.
1130 PM EDT Fri Jul 26 2019 High pressure should maintain mainly dry and seasonable weather through the weekend.
1139 PM CDT Fri Jul 26 2019 The pleasant conditions will continue across the region on Saturday, under the influence of high pressure aloft, with sunny skies and light southerly winds. Precip activity is progged to expand in areal coverage to the east Saturday night with intensity increasing along the cold front with onset of low level jet.
Monsoonal upper high, currently seen on satellite to our west over AZ/NM, will continue to be the main determinant of our weather in the short term. Broken to overcast deck of mid level clouds associated with a disturbance that rounded the northeastern side of the ridge last night has kept things relatively cool this afternoon, with temperatures mainly in the mid 80s to lower 90s.
1018 PM PDT Fri Jul 26 2019 A cold front will bring breezy winds across the region through Saturday. The forecast remains on track with a gradual increase in high clouds later tonight in the west as a cold front approaches and then the increasing winds going into Saturday away from the Cascades with the cold front pushing through. /Cote' 06Z TAFS: A cold front slips in late tonight into Saturday.
Another quiet period with VFR conditions forecast at all sites as high pressure remains in control.
400 AM CDT Sat Jul 27 2019 Upper level ridging will generally prevail across the intermountain west and high plains into early August, with western Kansas situated on the eastern edge. Moisture will increase a little in the wake of the cold front Sunday.
337 AM CDT Sat Jul 27 2019 The center of the high pressure ridge continues to spin between Albuquerque, NM and Tuscon, AZ on the 00Z RAOB analysis.