Aikyam-Lab/Synoptic-Bench huggingface dataset:
410 PM EDT Thu Aug 29 2019 High pressure will build in from the west this evening and remain across the area into the weekend. a weak secondary cold front (w/ minimal moisture) will slide S across the FA. Strong hi pres moves E across New England Sat night into Sun while a weak trough aloft/sfc lo pres tracks through the Great Lakes region. Refer to NHC for updated forecasts on Tropical Cyclone Dorian (through the upcoming weekend). The high pres will slide off the coast by Friday morning and winds will become southerly 5-10 kt. A weak cold front will move through the are Friday night.
On Friday the cold front that pushed through the region today will lay out across southern Iowa, and then lift up north as a warm front Friday night.
Excellent late August weather for the region with weak llvl ridging in place and sfc dewpoints in the U40s to L50s. There is a southeastward extension of an 850 mb thermal trough across NW and Ncent PA this midday hour, responsible for for an expanding area of fair weather cu. 850 mb temps across southern PA are a deg or two C warmer, so sky cover there should be few cu at best this afternoon. A few showers will try to get into the far NW by sunrise Friday, but the cold front will be carrying most of that moisture from the Pacific. A slight tap of the Gulf still has to circle around the big OH/TN Valley high pressure to get here.
333 PM EDT Thu Aug 29 2019 Dry high pressure will spread across the area through Friday before showers increase off the Atlantic this weekend.
352 PM CDT Thu Aug 29 2019 This Evening through Tomorrow: The forecast area should remain dry under the influence of high pressure both at the surface and aloft. /NF/ Dry conditions will exist through the early portions of the weekend as high pressure remains parked over the region.
Surface cold front currently from Decorah to Boone to Denison. Temps about 10 degrees cooler as well.
Drier and warmer conditions can be expected into the holiday weekend. Drier and warmer conditions are expected Friday into the weekend.
Expect high pressure and cooler conditions Thursday. The last of the cold front will be through by this afternoon. As high pressure builds in tonight, skies will clear out and winds will quickly fade as well. A cool night is expected with temperatures falling into the lower 50s to lower 40s. High pressure then continues on into Friday, with relatively light winds, cool temperatures, and mostly clear skies. Friday Night Through Thursday Pretty nice weather is expected for Friday night through Labor Day as high pressure moves from the Northern Plains to the eastern Great lakes.
High pressure builds back in from the west beginning late Friday night, and persists into the weekend.
High pressure and dry air will prevail across the tri-state region tonight with PoPs near 0 overnight. Min temps will be in the high 60s across SE AL and SW GA and low 70s elsewhere.
236 PM CDT Thu Aug 29 2019 Models are coming into better agreement with the handling of the upper ridge over the southwestern CONUS through the weekend lending more confidence to the forecast.
245 PM CDT Thu Aug 29 2019 (Tonight and Friday) An upper level high centered over the Desert Southwest will remain in place tonight and Friday. Lows tonight are expected to be in the lower to mid 70s, with highs on Friday in the mid to upper 90s.
155 PM CDT Thu Aug 29 2019 Quiet weather across the Tennessee Valley region this afternoon, with high pressure in control of the weather across the region.
Winds will quickly go mainly calm after sunset as the high settles overhead, so excellent radiational cooling conditions will develop. Stayed close to the cooler MET guidance with widespread mid/upper 50's expected. Forecast soundings at the TRI Cities show saturation below the low-level inversion in the 09-12Z timeframe as temps fall close to dew points, so patchy fog will again develop in protected valleys of northeast TN and southwest VA. The upper level trough will lift northeast through the day allowing heights to rebound. This will begin a WAA process, so high temps will be a solid 5 degrees warmer than today with skies remaining mostly sunny. The extended range forecast period kicks off on Friday evening amidst ridging across much of the southeast CONUS thanks to a broad/flat subtropical high.
The southward trend in the RR models is the result of a strong h700mb cap holding down high instability and the progress of a sfc cold front dropping into swrn Nebraska. The moisture, at least aloft, is very good with h700mb-h300mb RH around 70 percent, but the lower levels are very dry. The forecast is for a chance of showers and POPs are capped at 50 percent as a result of the dry air at the lower levels. This forecast is warmer than the straight guidance blend. The upper level ridge of high pressure which has governed temperatures across the wrn U.
This yielded low temperatures in the low to mid 40s, but there is potential to see lows a bit cooler than this. Temperatures will moderate on Sat with highs getting closer to average levels in the low to mid 70s. Tue and Wed: Cold front passing through the region overnight Mon into Tue will offer clearing and breezy weather for Tue proper. Cooler temperatures of 65 to 70 will be the norm through Wed as high pressure settles over the area.
Tomorrow will start off sunny and dry, but a cold front moving in from the north could trigger some showers and storms across southern Indiana during the late afternoon hours. A cold front will drop into Srn Indiana and stall just north of the OH River. A herculean high pressure ridge will amplify over S Rockies. Looks to be a 594m ridge around the 4 Corners National Monument. One models having trouble figuring out how strong the upper ridge will be to deflect the storm back to the west.
123 PM CDT Thu Aug 29 2019 Early this morning, surface analysis indicated a cold front moving southeast across North Dakota. A few gusts of 20 mph have occurred along the Buffalo Ridge in the last hour. Cool high pressure will build back in for the weekend.
154 PM PDT Thu Aug 29 2019 High pressure building over the southwestern states will trigger another warmup over the next couple of days.
In the west, the dewpoints have climbed into the mid 70s, while UNO still in the low 60s. Cold front was located from far northwest Missouri into northeast Iowa early this afternoon.
259 PM CDT Thu Aug 29 2019 An upper level ridge continues to drift west, continuing some drying for tonight. With the higher higher PWATs, some isolated convection has begun in the northeast counties along a weak mid level trough and could continue through the early evening. Convection will move inland with the sea breeze during the afternoon Friday over the Coastal Plains and the Victoria Crossroads as the weak mid-level trough moves south-southwest across the region. While some rain across the area would be welcome, the lower dewpoints will limit heat index values to 105 to 109 over the Coastal Plains and the southern Brush Country Friday.
1109 AM EDT Thu Aug 29 2019 A cold front will stall near the coast today. The pressure ridge behind the front moving into the Southern Appalachians will bring dry conditions to the forecast area through Friday.
/issued 851 AM EDT Thu Aug 29 2019/ Interaction between high pressure over the southeast U. and troughing extending through the western Atlantic is producing a persistent northeast wind flow over the Florida peninsula. Persistent northeast winds continue over the coastal waters as an inverted trough moves south of Florida and high pressure ridges in from the north.
120 PM MDT Thu Aug 29 2019 Cold front moving into the area from the north and northeast this afternoon.
Temperatures tomorrow will actually warm a bit over today due to abundant sunshine before another cold front moves through tomorrow night.
The only change was to lower morning PoPs over central Oregon into the lower Columbia Basin as ongoing precip is lifting northward.
331 PM CDT Thu Aug 29 2019 The cold front has moved to through much of the area this afternoon.
Only caveat seems to be that models continue to suggest a bit of a weakness developing between two mid level ridges Fri/Sat as a very weak sfc front sags southward toward the region.
251 PM CDT Thu Aug 29 2019 Cold front has swept thru the area as of mid afternoon with breezy to occasionally gusty northerly winds behind it.
300 PM CDT Thu Aug 29 2019 Cold front is exiting the area and high pressure is building in with clear skies and decreasing evening winds.
1251 PM CDT Thu Aug 29 2019 High pressure will continue over much of the area through the period. More humid air was noted just to our W and S, along the periphery of the ridge axis.
243 PM EDT Thu Aug 29 2019 A cold front will stall near the coast today. The pressure ridge behind the front moving into the Southern Appalachians will bring dry conditions to the forecast area through Friday.
Otherwise, lows tonight will be in the lower to middle 70s for most areas. Tomorrow night is expected to be quiet with lows once again in the lower to middle 70s.
250 PM EDT Thu Aug 29 2019 A cold front will stall offshore this afternoon and tonight.
The ridge begins to rebuild to the west on Friday so coverage of diurnally driven afternoon/evening showers and thunderstorms are expected to be reduced and mainly confined to the mountains along the Continental Divide. A broad ridge of high pressure across the southwestern U.
Lows look to be 40-45 area wide with a few degrees warmer SW. This yielded low temperatures in the low to mid 40s, but there is potential to see lows a bit cooler than this. Temperatures will moderate on Sat with highs getting closer to average levels in the low to mid 70s. Tue and Wed: Cold front passing through the region overnight Mon into Tue will offer clearing and breezy weather for Tue proper. Cooler temperatures of 65 to 70 will be the norm through Wed as high pressure settles over the area. Winds to remain light thru Friday as high pressure moves overhead.
Light to calm winds beneath clear skies will support radiational cooling, especially across northeast portions of the area where dewpoint depressions are the highest. /TW/ Prior discussion below: This Evening through Tomorrow: The forecast area should remain dry under the influence of high pressure both at the surface and aloft. /NF/ Dry conditions will exist through the early portions of the weekend as high pressure remains parked over the region.
232 PM PDT Thu Aug 29 2019 Temperatures will remain slightly above normal through Labor Day as high pressure continues to dominate the region along with dry conditions.
618 PM EDT Thu Aug 29 2019 A cold front will stall near the coast today. The pressure ridge behind the front moving into the Southern Appalachians will bring dry conditions to the forecast area through Friday.
Daytime highs remain cooler today being near to slightly below average. Early afternoon temperature readings are a bit cooler than yesterday given the Delta breeze influences. upper ridge expanding northward, a warm-up is likely on Friday with Valley highs back into the low/mid 90s. The region remains in between a stout ridge across the Desert Southwest/Four Corners and troughing over the Pacific Northwest.
623 PM CDT Thu Aug 29 2019 Cold front is exiting the area and high pressure is building in with clear skies and decreasing evening winds.
Quiet weather across the Tennessee Valley region this afternoon, with high pressure in control of the weather across the region.
Temperatures should fall into the upper 50s near the Tennessee River with most of us in the low 60s.
/28/ This Evening through Tomorrow: The forecast area should remain dry under the influence of high pressure both at the surface and aloft. /NF/ Dry conditions will exist through the early portions of the weekend as high pressure remains parked over the region.
733 PM EDT Thu Aug 29 2019 High pressure building in across the region will bring dry conditions to the forecast area through Friday.
405 PM CDT Thu Aug 29 2019 A surface cold front continues to push south across the forecast area and is forecast to extend northeastward from low pressure over southeast Colorado to southeast Nebraska and southwest Iowa by 00Z this evening.
Chattanooga Airport, TN 60 89 65 92 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 59 88 63 90 / 0 0 0 10 Oak Ridge, TN 60 88 64 90 / 0 0 0 10 Tri Cities Airport, TN 53 87 61 88 / 0 0 10 10.
702 PM EDT Thu Aug 29 2019 Dry high pressure will spread across the area through Friday before showers increase off the Atlantic this weekend.
Afternoon will bring isolated convection to the lower elevations. Temperatures will be in the mid 80s on the plains with the far northeast corner seeing highs 10 degrees cooler. A strong upper ridge is forecast to dominate Colorado weather for the holiday weekend.
Drier and warmer conditions can be expected into the holiday weekend.
Another fair overnight is expected over most of the area, with the exception being over the NW where a cold front sagging out of Canada could trigger some showers after midnight. In contrast, the low to mid 50s for min temps in the SE will be about 3-6 F cooler than early today, thanks to clear skies, low dewpoint air and light/variable wind. The cold front will drop SE across the Northern Mountains of the state during the late morning and early afternoon hours with just some isolated, brief showers.
/issued 236 PM CDT Thu Aug 29 2019/ Models are coming into better agreement with the handling of the upper ridge over the southwestern CONUS through the weekend lending more confidence to the forecast.
535 PM MDT Thu Aug 29 2019 Cold front moving into the area from the north and northeast this afternoon.
611 PM CDT Thu Aug 29 2019 A surface cold front continues to push south across the forecast area and is forecast to extend northeastward from low pressure over southeast Colorado to southeast Nebraska and southwest Iowa by 00Z this evening.
The cold front has moved to through much of the area this afternoon.
Convection associated with a cold front moving through the southern Gr Lakes may spread a few showers into the far north after midnight. In contrast, the low to mid 50s for min temps in the SE will be about 3-6 F cooler than early today, thanks to clear skies, low dewpoint air and light/variable wind. The cold front will drop SE across the Northern Mountains of the state during the late morning and early afternoon hours with just some isolated, brief showers.
Even so the low level jet has pulled off to the east and the 1000/850 moisture transport is away from this area instead of being aimed at the Lake Michigan shore area as it was most of the night.
716 PM CDT Thu Aug 29 2019 Cold front has swept thru the area as of mid afternoon with breezy to occasionally gusty northerly winds behind it.
The inverted upper level trough that contributed to the active thunderstorm day yesterday was still passing through northern Mexico today. The Tucson 12Z upper-air sounding also indicated a more stable air mass over the lower deserts compared to yesterday which will limit thunderstorm activity there this evening.
High pressure to our east will promote east to southeast surface winds through this time with speeds during the day mainly in the 6 to 12 mph range and mostly 5 mph or less at night.
3 inches near Bridgeton, with most of southern Newaygo and northern Muskegon County have had between.
/issued 245 PM CDT Thu Aug 29 2019/ (Tonight and Friday) An upper level high centered over the Desert Southwest will remain in place tonight and Friday. Lows tonight are expected to be in the lower to mid 70s, with highs on Friday in the mid to upper 90s.
1142 PM CDT Thu Aug 29 2019 High pressure builds in from the northwest late-week leading to sunny and cooler-than-normal conditions. Strong northwest winds today in the wake of the cold front are causing gusts to 30-40 mph, but these winds will taper off this evening with the loss of surface heating and a weakening pressure gradient. Much of the day Saturday should remain dry as high pressure will be centered over the central Great Lakes region, but will eventually move off to the east.
High pressure and dry air will prevail across the tri-state region tonight with PoPs near 0 overnight. Min temps will be in the high 60s across SE AL and SW GA and low 70s elsewhere. However, temperatures will be warm, with highs in the lower to mid 90s. By Saturday, an inverted trough is expected to move eastward into the Gulf of Mexico, along with a significant increase in deep layer moisture.
look for decreasing afternoon storm coverage and warmer afternoon temperatures across northern Arizona through Saturday.
Daytime Temps will Cont to Average Cooler than Normal with a Aloft: RAP tropopause analyses and aircraft obs indicated low- amplitude WNW flow over the CONUS. with a slight ridge in the W and a slight trof in the E. The WY trof will cross NEB/SD this afternoon. quickly followed by the OR trof tonight. The front will become quasi-stationary acrs Srn KS thru tonight while the high slides into the GtLks and strengthens to 1026 mb. The CAMs suggest sct shwrs this afternoon and that seems reasonable with the shrtwv trof moving thru. The subtropical high (currently over the Desert SW) will expand and eventually move over the Srn Plns in response to an E Pac trof that moves inland and heads E acrs the Nrn USA. A warm front will form and lift acrs KS/NEB.
321 AM CDT Fri Aug 30 2019 Today and Tonight: Ridging at the surface and aloft will continue to dominate the weather through tonight maintaining the dry airmass over the region.
352 AM CDT Fri Aug 30 2019 Widespread showers and thunderstorms are ongoing across the area, but the severe weather concerns have subsided for the night as the low level environment stabilizes within the large expanse of moderate to heavy rain. As the low level jet weakens through the morning expect the rain to gradually subside the northwest to the southeast.
344 AM EDT Fri Aug 30 2019 A surface inverted trough lifting northwest out of the Florida Straits and into the eastern Gulf of Mexico today is helping to transition low level winds across the forecast area back to northeasterly this morning, and then easterly by this afternoon and generally holding through the upcoming weekend.
152 AM EDT Fri Aug 30 2019 High pressure building in across the region will bring dry conditions to the forecast area today. Moisture will begin to increase Saturday in an onshore flow between tropical cyclone Dorian well to the southeast and ridging north of our area. Overnight temperatures will be a little warmer. By Saturday and Saturday night, both the NAM, GFS and ECMWF show a gradual increase in moisture as the low level winds become more south to east through the period. Continued with highest pops along the I-95 corridor to the lowest pops toward the Piedmont. High pressure across the area.
Mid-level moisture focused around 700 hPa will remain over the area and highs in the low to mid 90s may be just enough to allow us to see some elevated instability and MLCAPE values across the South Plains jump a bit to around 1000-1500 J/kg.
Persistent northeast winds will continue over the coastal waters as an inverted trough moves south of Florida and high pressure ridges in from the north.
957 PM PDT Thu Aug 29 2019 High pressure building over the southwestern states will trigger another warmup over the next couple of days.
355 AM CDT Fri Aug 30 2019 Upper level ridging will continue to slowly drift west through today.
403 AM EDT Fri Aug 30 2019 High pressure will remain across the area into the weekend. The center of the high will slide offshore by late today and tonight while producing another very pleasant late Aug day/night (w/ seasonable temps and comfortable humidity values). Lows tonight mainly in the low-mid 60s. a weak cold front (w/ minimal moisture) will slide S across the FA.
340 AM CDT Fri Aug 30 2019 A dry airmass, along with clear skies and light winds has allowed temperatures to drop into the mid 40s, to the low 50s.
1009 PM CDT Thu Aug 29 2019 High pressure builds in from the northwest late-week leading to sunny and cooler-than-normal conditions. Strong northwest winds today in the wake of the cold front are causing gusts to 30-40 mph, but these winds will taper off this evening with the loss of surface heating and a weakening pressure gradient. Much of the day Saturday should remain dry as high pressure will be centered over the central Great Lakes region, but will eventually move off to the east.
1056 PM CDT Thu Aug 29 2019 Cold front is exiting the area and high pressure is building in with clear skies and decreasing evening winds.
Hi-Res models overall cont to show a diminishing trend in coverage and intensity of the storms later this mrng as the low lvl jet diminishes and the activity moves into a more stable environment over our FA. This feature wl interact with the higher available moisture lvls to produce sctd convection.
134 AM EDT Fri Aug 30 2019 High pressure will build across through Friday. A weak cold front will move through Friday night.
1142 PM CDT Thu Aug 29 2019 A surface cold front continues to push south across the forecast area and is forecast to extend northeastward from low pressure over southeast Colorado to southeast Nebraska and southwest Iowa by 00Z this evening. Another weak mid-level trough will move eastward out of the Rockies Friday into Saturday. This will bring cooler and cloudier weather to the region to start the weekend. Additional showers and a few thunderstorms are possible Friday night into Saturday morning however these will likely be eroded away quickly as they move east into drier high pressure.
Elsewhere, hot and dry conditions persist under strong ridge of high pressure. Drier air will be wrapping around the northern periphery of the strong ridge which will limit deep convection to areas east of Mohave county Friday and Saturday.
132 AM EDT Fri Aug 30 2019 Dry high pressure will remain across the area before showers increase from off the Atlantic beginning late Saturday.
For the remainder of the forecast period expect upper level high pressure over the SW US to slowly build into the Mid-South. Expect highs in the lower 90s with lows in the 60s to lower 70s.
329 AM EDT Fri Aug 30 2019 High pressure will be in control over central North Carolina through the holiday weekend.
1017 PM CDT Thu Aug 29 2019 VFR conditions to prevail at all terminals with continental high pressure remaining in place through Friday night.
Into Saturday, the upper trough will lift to the east, lifting the surface front, and rain back to the north.
Lows look to be 40-45 area wide with a few degrees warmer SW. This yielded low temperatures in the low to mid 40s, but there is potential to see lows a bit cooler than this. Temperatures will moderate on Sat with highs getting closer to average levels in the low to mid 70s. Tue and Wed: Cold front passing through the region overnight Mon into Tue will offer clearing and breezy weather for Tue proper. Cooler temperatures of 65 to 70 will be the norm through Wed as high pressure settles over the area.
200 AM PDT Fri Aug 30 2019 High pressure aloft will bring hot weather to inland areas, especially the deserts, through Saturday.
306 AM CDT Fri Aug 30 2019 06Z surface data has the cold front running from lower Michigan to near KSTJ and then west across northern Kansas.
334 AM EDT Fri Aug 30 2019 High pressure building into the area in the wake of a passing cold front will provide quiet weather into the beginning of the weekend.
The upper ridge will continue to amplify through the day, resulting in slightly warmer temperatures than we saw yesterday, with highs nearing 90 degrees. Skies will be clear and winds will remain light, making for a beautiful start to the holiday weekend! The aforementioned ridge will continue to amplify over the weekend, and high temperatures will climb back into the lower 90s.
Cooler temperatures are expected across much of the area given rainfall and debris clouds that hamper warming. Chances for storms will be on the decrease for the 2nd half of the weekend as upper ridging strengthens over the forecast area.