Aikyam-Lab/Synoptic-Bench huggingface dataset:
621 PM CDT Thu Sep 28 2017 The shower activity across the high plains this afternoon is expected to slowly dissipate as it tracks northeast towards the local area this evening. With very dry air in the low levels of the atmosphere. Expect the responsible upper level low across Utah to continue to gradually lift northeastward into Wyoming by Friday afternoon. when it is expected to get absorbed into longwave trough over the upcoming weekend as it sags towards the local area. with a fairly breezy weekend in store for the local area as the pressure gradient increases ahead of a deepening longwave trough to our west. expect the upper level ridge across the central plains to shift east by the weekend with a large trough of low pressure building across the western states.
The cooler, less humid air is here with temperatures ranging through the 70s this afternoon across central KY and southern IN. A dry cold front will move through Friday afternoon and evening bringing a reinforcing shot of cool air.
A deep trough in the western US with a ridge from the Gulf Coast to the Ohio Valley is fcst for Sat. Southwest flow will erode the low level cool airmass and with weak impulses there will be a chance/slight chance for thunderstorms with temps just a few degrees below normal.
All models are in agreement that a ridge of high pressure will continue to be in control over the region. A weak cold front will push through the region Friday morning with some scattered diurnal cumulus clouds possible tomorrow in central Missouri during the day.
The UT upper low separated from the main flow will only slowly drift northeast not affecting our weather and IA will remain on the fringe of cyclonic flow beneath the Ontario/Great Lakes short wave. Mid level forcing and weak instability associated with this trough will pass to our north and east tonight followed by subsidence tomorrow. Forecast soundings and projected mixing suggest highs will be toward the cooler side of MOS, NAM in this instance.
748 PM EDT Thu Sep 28 2017 High pressure will maintain dry conditions through much of Friday before a cold front approaches. The northern fringe of counties where stratocu has held firm, will see temperatures a few degrees cooler than surrounding locations where late sun permeates.
Issued at 252 PM PM EDT Thu Sep 28 2017 High pressure over the central plains will build east towards the Ohio valley. Models bring a weak and dry secondary cold front south across Indiana Friday.
Warm inland but cooler at the coast with increasing onshore flow for the remainder of the day.
Surface cold front also easily depicted by wind shift and brief gusts over far northwest Wisconsin. High pressure will bring a sunny but coolish fall day on Friday.
659 PM CDT Thu Sep 28 2017 The upper level low across the Cntl Rockies is forecast to move very slowly north tonight and be located across WY Friday. Cloud cover and the stronger south winds across Swrn Neb should limit vertical mixing and hold down highs in that region to the low to mid 60s.
931 PM EDT Thu Sep 28 2017 Much cooler air will continue moving into the region overnight on breezy northwest winds.
1156 PM CDT Thu Sep 28 2017 Skies are clear and winds are light as high pressure ridge dominates the CWA tonight. Tonight, expect temps to fall into the 50s and the winds to lighten and become more variable as the ridge axis expands back over the region.
938 PM CDT Thu Sep 28 2017 Updated overnight lows to reflect slightly cooler trends due to a swath of drier air evident on low level water vapor imagery moving over the Caprock.
At the surface, cold front has pushed down to near the Gulf coast with weak high pressure situated over the high Plains. Upper low near four corners region will continue lifting northeast tonight into Fri and by 00z Sat will be situated over central WY. This setup will keep mid level moisture transport in place across the high Plains through Sun morning, with Sat night looking like the most widespread activity, as some jet energy starts to directly impact the area. Upper trough out west will get further reinforced as yet another piece of energy dives into the Central Great Basin on Sun night into Mon. As the showers move east, they will encounter lots of drier air in the low layers, with possibly a few sprinkles or virga actually making it to KRSL and possibly KGBD.
1006 PM CDT Thu Sep 28 2017 Clear skies tonight with high pressure over the region. CONSSHORT guidance a bit warmer than inherited grids and have reduced MIN T grid from CONSSHORT guidance by 2 deg across the domain. Generally ranging from upper 30s to low 40s and maybe a deg cooler than prev fcst advertised. Short wave ridge will shift east Friday night putting the fa back into sw flow aloft for the upcoming weekend.
1028 PM EDT Thu Sep 28 2017 Currently - A wet pattern is in place across the Florida Keys due to the combination of a cut off low aloft over the eastern Gulf of Mexico and a lower level trough extending across western Cuba and South Florida. The Lower Keys were the primary recipient of heavy showers and thunderstorms due to South Florida outflow boundaries. Light flow will prevail across Keys waters due to a trough across the Florida Keys and surrounding waters.
If winds calm down a bit, and temps drop a bit further into the low 50s, patchy fog may develop over eastern zones.
Friday will be another very warm day, followed by gradual cooling this weekend as a trough deepens along the West Coast. At 9 PM the low cloud and fog coverage was sparse and limited to areas south of Tijuana.
We went on the cool side of guidance for temperatures tonight with that ridge axis sliding overhead.
A weak trough of low pressure off the southern Florida coast will lift northward into tonight. Cloudier conditions will exist across southern portions of east central Florida closer to the trough, with lows falling into the low to mid 70s overnight. Best chance for onshore moving showers and possibly a few thunderstorms into late tonight will be from KVRB- KSUA where deeper moisture associated with weak inverted trough will build into the area.
1140 PM CDT Thu Sep 28 2017 VFR conditions are expected to prevail throughout the forecast period with high pressure over the area.
937 PM EDT Thu Sep 28 2017 High pressure will keep dry weather over the region tonight.
Another vortmax rounding the base of the large trof to our west might start additional activity through the overnight, but confidence on this is not high.
A weak ridge is over the local area with a broad pressure field over the Gulf currently supporting moderate northeast winds.
High pressure will build in across the Ohio Valley tonight, bringing cooler temperatures and river valley fog. The current lows in the upper 40s to lower 50s in the valleys, with the ridges a touch milder, look on track thus far. Cooler and drier air has continued to slowly filter into eastern Kentucky this afternoon, but not quite as fast as previously expected. With lows expected to fall well under current dewpoints tonight (into the low to mid 50s), should see a good deal of fog develop, mainly in the river valleys. A secondary dry cold front will push across the area late tomorrow with a slightly better push of drier air. This will lead to an even cooler Friday night with lows well into the 40s in many areas.
With local 00z raob and latest KLCH VWP showing nrly flow through the lower and mid levels, as well as somewhat decreased moisture upstream, expect the area to remain dry through the remainder of the night.
Laramie Range eastward along the Cheyenne Ridge for tonight to account for this and would not be surprised if another dense fog advisory is needed. Slow moving upper low that has been influencing our weather over the past day or so will lift N into western Wyoming by early Friday.
Surface cold front also easily depicted by wind shift and brief gusts over far northwest Wisconsin. There have been some diurnal cold pool aloft type showers that developed well behind the front over north central MN, but these should dissipate very rapidly as the lower sun. High pressure will bring a sunny but coolish fall day on Friday.
A low pressure system will bring a chance for showers and thunderstorms through Friday, primarily focused over the eastern portions of the state.
914 PM EDT Thu Sep 28 2017 High pressure will maintain dry conditions through much of Friday before a cold front approaches. Light surface flow may limit fog potential tonight, but warmer, sheltered river valleys could see some development in the pre-dawn.
Current surfaced analysis places modest low over Ontario, and high stretching from the Canadian Prairies into the high plains. Upper level analysis places cut off low over Utah, with ridge over the Northern and Canadian Rockies. quiet weather expected over the area as ridge axis gradually pushes east. quiet weather continues as ridge passes over while aforementioned upper low lifts into the backside of the ridge and opens.
932 PM EDT Thu Sep 28 2017 A cold front just north of the area will become quasi-stationary near the Altamaha River basin tonight through tomorrow.
At 1 PM, a short wave trough was located over northern Minnesota. On Friday, high pressure will build across the area. The high will shift into the eastern Great Lakes through the weekend with southerly flow developing along with increasing deep layer moisture, especially during the second half of the weekend as the upper level flow becomes southwesterly.
/issued 300 PM CDT Thu Sep 28 2017/ Some sct convection has developed just to the s and w of our region this aftn where the cold front that moved through our region overnight has stalled.
751 PM EDT Thu Sep 28 2017 Much cooler and more seasonable temperatures will be with us through the weekend.
Brisk nly winds will prevail on Fri in the wake of a cold front. Isolated to possibly scattered, high based showers are expected tnt as a broad cold front moves through the region. An upper trough will slide through the Upper Great Lakes tonight. The HRRR model keeps showing showers developing within the 850mb thermal ridge toward southeast WI and then track into south central WI later this evening. Temperatures will be cooler than today, with highs in the mid 60s.
However, no changes were made to the low temperatures forecast. /issued 300 PM CDT Thu Sep 28 2017/ Some sct convection has developed just to the s and w of our region this aftn where the cold front that moved through our region overnight has stalled.
Tonight, expect temps to fall into the 50s and the winds to lighten and become more variable as the ridge axis expands back over the region.
Low level moisture convergence is also progged to strengthen along the coast through tonight due to a weak coastal trough, and an embedded upper level short wave is expected to slowly track NE across the west then north portions of the CWA. A chc of convection continues on Fri as a weak cold front approaches the area, deeper moister pools across S TX and the upper short wave continues its slow track across the region. Not much in the way of CAA with this front nor a wind shift as sfc winds are already northerly due to the inverted coastal trough. The drier airmass associated with the weak cold front is expected to slowly advect into S TX Fri night.
Expect periodic light rain across eastern CO and perhaps far western KS tonight/Friday as small amplitude waves round the base of the 4-corners low and eject NE across the high plains. An upper low traveling northward from the desert southwest through the Rockies is absorbed by a trough digging into the Pacific Northwest on Friday night.
1126 PM CDT Thu Sep 28 2017 Clear skies tonight with high pressure over the region. CONSSHORT guidance a bit warmer than inherited grids and have reduced MIN T grid from CONSSHORT guidance by 2 deg across the domain. Generally ranging from upper 30s to low 40s and maybe a deg cooler than prev fcst advertised. Short wave ridge will shift east Friday night putting the fa back into sw flow aloft for the upcoming weekend.
524 PM MDT Thu Sep 28 2017 Latest upper analysis shows a Rex block over the western Conus with a low pressure system over the four corners region and a ridge to the north. At the surface, high pressure was located over most of the Canadian and US plains states. The upper low will gradually move northward tonight and then will swing northeastward across the forecast area on Friday night as it become embedded in the next upper trough approaching from the west. The sfc pressure gradient will tighten on Friday aftn as a lee trough develops supporting breezy areas.
Ridging surface to aloft will persist over South Central Texas.
A quick-moving cold front will move onshore early Friday morning, spreading a brief period of rain across much of the forecast area during the day.
903 PM CDT Thu Sep 28 2017 Skies are clear and winds are light as high pressure ridge dominates the CWA tonight. Tonight, expect temps to fall into the 50s and the winds to lighten and become more variable as the ridge axis expands back over the region.
1235 AM EDT Fri Sep 29 2017 Much cooler air will continue moving into the region overnight on breezy northwest winds.
At the surface, cold front has pushed down to near the Gulf coast with weak high pressure situated over the high Plains. Upper low near four corners region will continue lifting northeast tonight into Fri and by 00z Sat will be situated over central WY. This setup will keep mid level moisture transport in place across the high Plains through Sun morning, with Sat night looking like the most widespread activity, as some jet energy starts to directly impact the area. Upper trough out west will get further reinforced as yet another piece of energy dives into the Central Great Basin on Sun night into Mon. As the showers move east, they will encounter lots of drier air in the low layers, with possibly a few sprinkles making to KRSL.
1156 PM EDT Thu Sep 28 2017 Mid level cloud thickens overnight as a cold front advances toward the region. Expansion of low cloud into the area will accompany a cold frontal passage. Warm air and moisture advection as seen in the 850-700mb theta-e axis out ahead of this upper trough axis will stream across lower Michigan. The greater thunderstorm chances will remain over Lake Huron due to the cold airmass moving over the warmer waters creating some more instability. The positively tilted trough axis will move through the area tomorrow and put Michigan under the influence of the left entrance region of the upper level jet. Isolated showers and thunderstorms will remain possible throughout Friday afternoon as a secondary push of cooler air is shoved southward behind a cold front with breezy north to northeasterly flow.
High pressure continues to drop south over the central and eastern Dakotas. Current surfaced analysis places modest low over Ontario, and high stretching from the Canadian Prairies into the high plains. Upper level analysis places cut off low over Utah, with ridge over the Northern and Canadian Rockies. quiet weather expected over the area as ridge axis gradually pushes east. quiet weather continues as ridge passes over while aforementioned upper low lifts into the backside of the ridge and opens.
Isolated to possibly scattered, high based showers are expected tnt as a broad cold front moves through the region. An upper trough will slide through the Upper Great Lakes tonight. The HRRR model keeps showing showers developing within the 850mb thermal ridge toward southeast WI and then track into south central WI later this evening. Temperatures will be cooler than today, with highs in the mid 60s.
The weekend will be cooler and breezy, with a few showers. Tonight through Friday night: High pressure will remain in place tonight promoting clear skies and weak easterly winds. A cold front will push across the region Friday night. Friday will be our last day of the week, and potentially for the season, where we will see temperatures in the 70s to low 80s as the cold front will usher in a much cooler air mass.
Short wave ridge will shift east Friday night putting the fa back into sw flow aloft for the upcoming weekend.
932 PM EDT Thu Sep 28 2017 Much cooler and more seasonable temperatures will be with us through the weekend.
133 PM EDT Thu Sep 28 2017 A cold front will approach the region from the northwest through tonight, then move south of the area by early this weekend. High pressure will then extend south into Georgia and the Carolinas into mid-week. Tonight: The cold front is expected to be slow to reach our area overnight, eventually dipping into northern SC zones late and probably toward daybreak. Lows will range from upper 60s far nw zones to the lower to mid 70s elsewhere.
Warm and above average high temperatures continue for today and Friday with high pressure over the region.
556 PM EDT Thu Sep 28 2017 High pressure will maintain dry conditions through much of Friday before a cold front approaches. The northern fringe of counties where stratocu has held firm, will see temperatures a few degrees cooler than surrounding locations where late sun permeates.
A pleasant day is underway across the Tennessee Valley with a cold front traversing the area at this hour, bisecting the region from SW to NE. The noticeable effects from this fropa will arrive later this evening as cooler/drier air arrives from upstream. Lows tonight will dip into the 55-60F range, with the lower values occurring in sheltered valley locations of NE AL, and across much of Southern Middle TN. The influx of cooler air out of the N should certainly continue into the evening hrs, as cloud cover begins to diminish from the W. As a strong dome of high pressure out of the nrn Plains dives towards the SE, afternoon highs look to climb mainly into the upper 70s/near 80F both Fri/Sat under mostly sunny skies.
The main impact will be cooler daytime highs for the interior and greater cloud cover. On the back side of the front, high pressure will build in. The overland trajectory of the low will limit the amount of moisture being advected to the area. Departing upper high ridging, retreating surface thermal troughing and weaker offshore flow has reversed coastal weather conditions overnight. Ridging behind the front will build Fri night and winds offshore will once again reach 20-25kt.
An upper level ridge over the western U. will continue to shift east due to the approach of a Gulf of Alaska trough. Clear skies today with increasing mid and high level clouds overnight as a cold front approaches the region from the west. Cloudy skies with areas of showers will spread eastward and westerly winds will increase Friday afternoon with a cold frontal passage.
354 PM CDT Thu Sep 28 2017 The shower activity across the high plains this afternoon is expected to slowly dissipate as it tracks northeast towards the local area this evening. With very dry air in the low levels of the atmosphere. Expect the responsible upper level low across Utah to continue to gradually lift northeastward into Wyoming by Friday afternoon. when it is expected to get absorbed into longwave trough over the upcoming weekend as it sags towards the local area. with a fairly breezy weekend in store for the local area as the pressure gradient increases ahead of a deepening longwave trough to our west. expect the upper level ridge across the central plains to shift east by the weekend with a large trough of low pressure building across the western states.
A low pressure system will bring a chance for showers and thunderstorms through Friday, primarily focused over the northern and eastern portions of the state. Upper level low has moved over Utah and Colorado. Low pressure was centered over southern Utah this morning, moving northward.
243 PM EDT Thu Sep 28 2017 The cooler, less humid air is here with temperatures ranging through the 70s this afternoon across central KY and southern IN. A dry cold front will move through Friday afternoon and evening bringing a reinforcing shot of cool air.
616 PM EDT Thu Sep 28 2017 High pressure builds in from the west through Friday.
307 PM CDT Thu Sep 28 2017 Current surfaced analysis places modest low over Ontario, and high stretching from the Canadian Prairies into the high plains. Upper level analysis places cut off low over Utah, with ridge over the Northern and Canadian Rockies. quiet weather expected over the area as ridge axis gradually pushes east. quiet weather continues as ridge passes over while aforementioned upper low lifts into the backside of the ridge and opens.
221 PM CDT Thu Sep 28 2017 At 1 PM, a short wave trough was located over northern Minnesota. On Friday, high pressure will build across the area. The high will shift into the eastern Great Lakes through the weekend with southerly flow developing along with increasing deep layer moisture, especially during the second half of the weekend as the upper level flow becomes southwesterly.
300 PM CDT Thu Sep 28 2017 Some sct convection has developed just to the s and w of our region this aftn where the cold front that moved through our region overnight has stalled.
144 PM EDT Thu Sep 28 2017 Much cooler and more seasonable temperatures will be with us through the weekend.
146 PM EDT Thu Sep 28 2017 High pressure will maintain dry conditions through much of Friday before a cold front approaches.
122 PM EDT Thu Sep 28 2017 Warm high pressure will remain across the region today as Hurricane Maria slowly moves away from the NC coast. A moisture limited cold front will move through the area tonight, then stall just south of the area over the weekend. Above normal temperatures will cool for the end of the week behind the cold front. Upper ridging over the Southeastern states will flatten out today. A cold front currently in the Upstate Sc will move across the region tonight. Temperatures will once again be around 10 or more degrees above normal with highs in the lower to middle 90s. The cold front will move across the region overnight.
356 PM MDT Thu Sep 28 2017 Mountains will see isolated thunderstorms for the next few hours, as they are closest to the upper low spinning over Utah. On Friday, the upper low currently over Utah is forecast to be moving across northern Colorado and Wyoming. Temperatures will be a few degrees warmer than today's highs.
339 PM EDT Thu Sep 28 2017 Cooler and drier air has continued to slowly filter into eastern Kentucky this afternoon, but not quite as fast as previously expected. With lows expected to fall well under current dewpoints tonight (into the low to mid 50s), should see a good deal of fog develop, mainly in the river valleys. A secondary dry cold front will push across the area late tomorrow with a slightly better push of drier air. This will lead to an even cooler Friday night with lows well into the 40s in many areas.
A low pressure system will bring a chance for showers and thunderstorms through Friday, primarily focused over the northern and eastern portions of the state.
A dampening synoptic ridge and broad troughing on the northern flank of this ridge has resulted in a slow dry frontal passage today. The forecast for tonight will mainly be focused on dry and cooler air finally arriving behind the front that already passed over the TN Valley.
/22/ Mid morning surface analysis had a weak dry cold front between Interstate 20 and Highway 84. Despite the cold front, afternoon temperatures will top out warmer than normal across most of our CWA. /22/ Prior discussion below: Today and Tonight: A surface cold front, moving through north MS at the moment, will continue its slow southward trek today and tonight and be completely through by sunrise Friday morning. While some convergence will be evident in the form of enhanced cloud cover, no convection is expected as ridge/warm air aloft inhibits significant vertical growth.
629 PM EDT Thu Sep 28 2017 Much cooler air will continue moving into the region overnight on breezy northwest winds.
233 PM EDT Thu Sep 28 2017 After a long stretch of summer like weather, a cold front has moved through with more seasonal weather behind it. A second shot of cooler air will arrive Friday as an upper level disturbance drops in from the Great Lakes. Weak ridging builds into air with clear skies and light winds.