Aikyam-Lab/Synoptic-Bench huggingface dataset:
Looking aloft, a potent PV max was moving east across the Northern Plains with the base of the parent trough diving southeast across the Central Plains. Another upper low was located over NW Mexico with SW flow aloft over our area. The stratiform rain band should continue to shift SE with the front and gradually weaken as the upper flow begins to veer to W and then NW with approaching trough axis. Cold front has pushed into NW AR this evening. /Issued 230 PM CDT SUN SEP 25 2016/ The much anticipated cold front is making its way through the forecasts area this afternoon and is currently positioned near Interstate 44. A cooler and drier airmass will settle over Oklahoma and Arkansas behind the front, as evidenced by dew points in the 30s and 40s in Kansas and Nebraska at present.
Have lowered PoPs from the earlier update, but did not go below the original fcst as models indicate that we could get some redevelopment overnight as the cold front slowly sinks sewd. /issued 627 PM CDT SUN SEP 25 2016/ Cold front currently stretching from east Texas to western Arkansas will maintain evening VCTS conditions across TYR/LFK terminal sites.
Mostly clear skies will remain in place overnight and Monday as high pressure is in control.
615 PM CDT SUN SEP 25 2016 Manual upper-air analysis at 12z revealed a vigorous mid-level trough from central Canada into the north-central U. At the surface, a cold front stretched from the upper Midwest through the Ozarks into southern Plains as of early afternoon. These winds will diminish by evening with clearing skies allowing overnight lows to fall into the lower to mid 40s. The upper-air system passing to our north today will evolve into a closed low over the Great Lakes early this week with the mid Missouri Valley remaining in northwest flow aloft.
A gradual warming trend can be expected during the next few days as upper-level ridging continues to build into the region.
740 PM EDT SUN SEP 25 2016 Aviation A strong cold front will move across the state tonight and set the stage for much cooler weather for this week.
1020 PM EDT Sun Sep 25 2016 High pressure over the Northeast will slowly drift off the coast on Monday.
754 PM EDT Sun Sep 25 2016 Rain showers will accompany a strong cold front tonight into early Monday morning.
741 PM EDT Sun Sep 25 2016 High pressure over the Northeast will slowly drift off the coast on Monday.
945 PM CDT Sun Sep 25 2016 High pressure will build over the forecast area tonight. Eastern portions of central ND should remain in the lower 40s with stronger winds remaining through the night. But with current dew point temperatures in the lower to middle 30s, think it's wise to drop temperatures a bit. Strong northwest winds will continue this afternoon southwest of deep low pressure across northeast Manitoba and western Ontario in the wake of a cold front entering northwest Minnesota.
315 PM CDT Sun Sep 25 2016 Surface cold front has moved through the forecast area, with cooler and drier air advecting in behind the boundary. A slow- moving highly amplified upper trough evolving over the Great Lakes into the Ohio Valley region will supply the area with reinforcing shots of cool air during the week with persistent northwesterly to northeasterly H85 flow, and dry atmospheric moisture resulting in no appreciable weather expected through the period.
834 PM EDT Sun Sep 25 2016 High pressure will result in another cool night across the Keystone state.
The axis of the high pressure ridge is progressing over southeast Idaho a little slower than previously forecast.
1048 PM EDT SUN SEP 25 2016 High pressure shifts east tonight. A cold front will cross Monday with showers and thunderstorms.
627 PM CDT SUN SEP 25 2016 Cold front currently stretching from east Texas to western Arkansas will maintain evening VCTS conditions across TYR/LFK terminal sites.
First significant cold front of the season was making its way southeastward this afternoon, and it is on track to enter Alabama on Monday.
KABI is expected to see improving conditions by 06Z as drier and cooler air moves in behind a cold front that is sweeping south across the area. Showers are expected to persist through the overnight hours as well as humid air is lifted over the top of the cooler surface air mass. The upper level low is located over northwest Mexico, with additional short wave energy upstream of our area. Also, a cold front moving south will provide some lift too.
417 PM EDT Sun Sep 25 2016 High pressure to the north will extend over the area through Monday.
1042 PM EDT SUN SEP 25 2016 An upper-level ridge will continue to build east across the region tonight then move off the coast Monday. A cold front moving into the area tonight will stall across the area Monday providing a focus for scattered showers and thunderstorms.
401 PM EDT Sun Sep 25 2016 A large area of high pressure over the area will result in another cool night across the Keystone state.
(Issued 926 PM CDT Sun Sep 25 2016) Weak upper low along the Gulf coast was producing some mid/high level clouds across the TN valley.
647 PM EDT Sun Sep 25 2016 Showers and scattered thunderstorms can be expected with a Monday cold front. Dry advection will wane this evening with dewpoints likely creeping up from the southeast overnight as more moist marine air advances northward up the east side of the ridges. Fries A deepening mid level trough is projected to close over the Northern Great Lakes on Monday as it drives a cold front across the Upper Ohio.
This activity is associated with a weak cold front approaching the area. /issued 221 PM CDT Sun Sep 25 2016/ SHORT TERM (Tonight through Monday Night): A negative tilt H5 trough is moving laterally from west to east across the upper plains today. High pressure is over the central high plains and a cold front is pushing out ahead of that high pressure over North Central Texas. High pressure is also over the Gulf of Mex, driving a moderate southeast flow over the CWA, pumping moisture ashore. The NAM starts out the work week Monday morning with ongoing Gulf showers and streamers moving onto the coast and over the Lower Valley, even reaching the southern Mid Valley. Overnight low temperatures will be a bit less than tonight, in the lower to mid 70s.
322 PM MDT Sun Sep 25 2016 Strong high pressure over the western U. Temperatures on the plains will be cooling into the 30s with some parts of northern Weld County and the Palmer Divide dropping close to the freezing mark. Otherwise, temperatures should be some 5 to 10 degrees warmer tomorrow afternoon as the west to northwest flow aloft advects warmer air over the Rocky Mountain reigon.
723 PM EDT SUN SEP 25 2016 High pressure over New England will depart to the east tomorrow. A strong cold front will move across the area on Monday bringing a transition to below normal temperatures. An upper level low will linger over the region through mid-week. A good surge of moisture will reach northwest Ohio overnight in advance of the approaching cold front. The cold front will move east across the area on Monday and is expected to clear the northwest Pennsylvania counties by mid- afternoon. Shower activity should get a boost in coverage by mid-day from a combination of daytime heating and lift ahead of the deep trough pivoting in from the west. This cold front ushers in the coolest airmass of the fall thus far with highs in the 60s and lows in the 40s through mid-week.
Main area of concern will be those low lying locations where temperatures could drop to near freezing. Strong high pressure over the western U. Temperatures on the plains will be cooling into the 30s with some parts of northern Weld County and the Palmer Divide dropping close to the freezing mark. Otherwise, temperatures should be some 5 to 10 degrees warmer tomorrow afternoon as the west to northwest flow aloft advects warmer air over the Rocky Mountain region.
805 PM EDT SUN SEP 25 2016 High pressure shifts east tonight. A cold front will cross Monday with showers and thunderstorms.
A strong upper level ridge will give dry and warm weather to the area though Monday. A cold front will move through the area Monday night.
225 PM MST SUN SEP 25 2016 A developing low pressure system over northwest Mexico and the Baja Peninsula, will slowly move north toward southwest Arizona by later Monday.
Cold front is now south of the forecast area with north to northeasterly winds in its wake, generally in the 10 to 20 knot range. KABI is expected to see improving conditions by 06Z as drier and cooler air moves in behind a cold front that is sweeping south across the area. Showers are expected to persist through the overnight hours as well as humid air is lifted over the top of the cooler surface air mass. The upper level low is located over northwest Mexico, with additional short wave energy upstream of our area. Also, a cold front moving south will provide some lift too.
934 PM EDT Sun Sep 25 2016 Cold high pressure crosses the region tonight. Most towns away from the coast will see their first frost or freezing temperatures tonight.
Winds will diminish after sunset this evening as low pressure continues to move away from the region.
607 PM EDT SUN SEP 25 2016 High pressure over New England will depart to the east tomorrow. A strong cold front will move across the area on Monday bringing a transition to below normal temperatures. An upper level low will linger over the region through mid-week. A good surge of moisture will reach northwest Ohio overnight in advance of the approaching cold front. The cold front will move east across the area on Monday and is expected to clear the northwest Pennsylvania counties by mid- afternoon. Shower activity should get a boost in coverage by mid-day from a combination of daytime heating and lift ahead of the deep trough pivoting in from the west. This cold front ushers in the coolest airmass of the fall thus far with highs in the 60s and lows in the 40s through mid-week.
Sfc cold front will make its way through S WI this afternoon and evening. Mainly shower activity is expected this evening, but a rumble of thunder can't be ruled out due to lingering instability in the form of 100-500 J/kg of MLCAPE, with the highest values in the southeast.
Weak mid level troughs will linger offshore over NE GOMEX and from offshore GA/SC to the Bahamas.
330 PM CDT SUN SEP 25 2016 An upper level low is located over the northern plains along the Canadian border, with an upper level trough extending down from this system through the plains to an upper level low over the southwest U. Low level southerly flow is allowing Gulf moisture to stream ahead of the trough. Only isolated showers and storms are occurring over eastern portions of the forecast area, as an upper level low that is filling in over the Western Florida Panhandle is brining in some mid level dry air. The upper level low over the northern plains will continue to move eastward to the eastern Great Lakes over the next couple of days, with an upper level trough rotating around the low through the plains and Mississippi valley to eventually the east coast.
224 PM MDT Sun Sep 25 2016 Latest analysis shows the upper trough has moved eastward over Manitoba and the eastern Dakotas/western Minnesota with an upper ridge building over the western CONUS. The upper ridge will begin to build over the area on Monday, producing clear skies and warm temperatures. Strong upper ridging combined with a slowdown in the upper pattern will bring mainly dry weather to the region through much of the work week.
Showers and thunderstorms are again forecast throughout SE Texas tomorrow as a cold front approaches from the NW.
Weak upper low along the Gulf coast was producing some mid/high level clouds across the TN valley. (Issued 625 PM CDT Sun Sep 25 2016) For 00Z TAFs: Cdfnt now across sern MO with a weak upper low along the Gulf Coast. The circulation arnd this weak upper low, kicked off an isolated shra or two over portions of the CWA this aftn.
1136 PM CDT SUN SEP 25 2016 Ceilings and visibilities to deteriorate to MVFR/IFR across area terminals overnight as a cold front eases across the region.
721 PM EDT Sun Sep 25 2016 Tranquil early fall weather will persist through Monday, as a large area of Canadian high pressure crosses the region.
Cold front has pushed into NW AR this evening. /Issued 230 PM CDT SUN SEP 25 2016/ The much anticipated cold front is making its way through the forecasts area this afternoon and is currently positioned near Interstate 44. A cooler and drier airmass will settle over Oklahoma and Arkansas behind the front, as evidenced by dew points in the 30s and 40s in Kansas and Nebraska at present.
Building high pressure will bring dry conditions with a warming trend through the first part of the week. A mostly quiet evening weather-wise across Utah and southwest Wyoming as high pressure moves in behind a departing low pressure system and the forecast area lies under drier northwest flow aloft. The ridge will remain in place tomorrow, resulting in another tranquil day with maxes warming to near climo.
1004 PM EDT SUN SEP 25 2016 High pressure over New England will move off the coast overnight.
1142 PM CDT SUN SEP 25 2016 Manual upper-air analysis at 12z revealed a vigorous mid-level trough from central Canada into the north-central U. At the surface, a cold front stretched from the upper Midwest through the Ozarks into southern Plains as of early afternoon. These winds will diminish by evening with clearing skies allowing overnight lows to fall into the lower to mid 40s. The upper-air system passing to our north today will evolve into a closed low over the Great Lakes early this week with the mid Missouri Valley remaining in northwest flow aloft.
Tonight Through Monday Dry high pressure will be over the area tonight and Monday. Monday Night Through Sunday Dry and warmer weather with generally light wind will continue through midweek.
/issued 626 PM CDT SUN SEP 25 2016/ VFR conditions should prevail as cooler but drier low level air undercuts higher level moisture. /issued 320 PM CDT SUN SEP 25 2016/ The much anticipated cold front has now cleared the CWA with gusty winds advecting in drier air at the low levels. The advancing dry air will hamper rain prospects through the late afternoon and evening hours even as broad upper level diffluence within the deformation region of a large upper low spinning southwestward through Sonora propels upper level moisture and lift over the region. A nice recovery into the upper 60s and lower 70s is expected Monday afternoon, though where clouds may hang around most/all of the day it may not make it out of the low-mid 60s over the southwest South Plains. Upper level ridging will be the story this week.
A persistent low pressure system will bring gusty winds into Monday, along with a chance of showers and thunderstorms through midweek. Expect cooler temperatures Monday, then daytime temperatures returning closer to normal late in the week. A low pressure system will become quasi- stationary over central Baja California Monday.
The upper level low is located over northwest Mexico, with additional short wave energy upstream of our area. Also, a cold front moving south will provide some lift too.
Overnight lows will drop into the lower 70s most locations but will remain a bit higher at the beaches. Aftn temps acrs the region will climb into the 90s ahead of the cold front which is now located south of DAL/FTW metroplex. The cold front looks to move thru the lakes region in se Tx around the noon hour and moves offshore drg the eve hours.
856 PM EDT SUN SEP 25 2016 Update A strong cold front will move across the state tonight and set the stage for much cooler weather for this week.
Temperatures have cooled considerably this afternoon, and highs today are only expected to reach the lower 70s, possibly even the upper 60s in some locations. High pressure will stay just to the west but nose into the area this evening and overnight, drifting southeast through the day tomorrow.
825 PM EDT Sun Sep 25 2016 High pressure will result in another cool night across the Keystone state.
A strong early autumn upper ridge over the northeast Pacific and the Pacific Northwest today will slowly move eastward tonight and Monday, continuing to produce mild and dry weather over southwest Washington and northwest Oregon through Monday.
556 PM EDT SUN SEP 25 2016 An upper-level ridge will continue to build east across the region tonight then move off the coast Monday. A cold front moving into the area tonight will stall across the area Monday providing a focus for scattered showers and thunderstorms.
555 PM EDT Sun Sep 25 2016 Cold high pressure crosses the region tonight. Most towns away from the coast will see their first frost or freezing temperatures tonight.
626 PM CDT SUN SEP 25 2016 VFR conditions should prevail as cooler but drier low level air undercuts higher level moisture. /issued 320 PM CDT SUN SEP 25 2016/ The much anticipated cold front has now cleared the CWA with gusty winds advecting in drier air at the low levels. The advancing dry air will hamper rain prospects through the late afternoon and evening hours even as broad upper level diffluence within the deformation region of a large upper low spinning southwestward through Sonora propels upper level moisture and lift over the region. A nice recovery into the upper 60s and lower 70s is expected Monday afternoon, though where clouds may hang around most/all of the day it may not make it out of the low-mid 60s over the southwest South Plains. Upper level ridging will be the story this week.
1143 PM CDT Sun Sep 25 2016 Surface cold front associated with an upper level trough will continue its march eastward tonight, firing showers and a few thunderstorms along and ahead of it.
/issued 357 PM CDT SUN SEP 25 2016/ A broad upper trough continues to move along the US/Canada border in the Northern Plains while a southern stream low has cut off over Northwest Mexico. To the east, an upper ridge is over the eastern half of the country with a weak mid-level ridge over the western tip of the Florida Panhandle. At the surface, a cold front was located just east of the Interstate 35 corridor in Texas and extended north-northeast through Eastern Oklahoma and into Northwest Arkansas and Southwest Missouri. A plume of deep layer moisture is being drawn northward by the Plains and Mexico troughs, which has aided in the development of widespread convection along the cold front.
320 PM CDT SUN SEP 25 2016 The much anticipated cold front has now cleared the CWA with gusty winds advecting in drier air at the low levels. The advancing dry air will hamper rain prospects through the late afternoon and evening hours even as broad upper level diffluence within the deformation region of a large upper low spinning southwestward through Sonora propels upper level moisture and lift over the region. A nice recovery into the upper 60s and lower 70s is expected Monday afternoon, though where clouds may hang around most/all of the day it may not make it out of the low-mid 60s over the southwest South Plains. Upper level ridging will be the story this week.
Water vapor loop showing drying aloft wrapping around the upper low entering the Red River valley and have seen winds pick up a tad more with 40+ mph gusts and sustained winds 30 mph at a few sites around Grand Forks and fargo. Also will hang on to higher pops late aftn/early eve into the northern RRV and NW MN as another area of showers now dropping back southeast around the upper low across northeastern ND. Lows in the low-mid 40s tonight.
A cold front approaches from the northwest tomorrow afternoon, accompanied by showers and thunderstorms.
321 PM CDT SUN SEP 25 2016 Winds will diminish after sunset this evening as low pressure continues to move away from the region.
907 PM EDT SUN SEP 25 2016 High pressure over New England will depart to the east tomorrow. A strong cold front will move across the area on Monday bringing a transition to below normal temperatures. An upper level low will linger over the region through mid-week. As the upper low starts to dive se toward the area later tonight. The cold front will move east across the area on Monday and is expected to clear the northwest Pennsylvania counties by mid- afternoon. Shower activity should get a boost in coverage by mid-day from a combination of daytime heating and lift ahead of the deep trough pivoting in from the west. This cold front ushers in the coolest airmass of the fall thus far with highs in the 60s and lows in the 40s through mid-week.
The short term is dominated by a ridge over the western US.
255 PM MDT SUN SEP 25 2016 A gradual warming trend can be expected during the next few days as upper-level ridging continues to build into the region.
As high pressure moved out of the area today, a few showers wasted no time popping up on the Plateau. As a cold front moves into the mid state on Monday morning, showers and an isolated storm or two will move in from the west. which means temperatures may only reach the low 70s for those lucky folks. The I-65 Corridor and the Cumberland Plateau will have a chance to warm into the upper 70s and maybe even the low 80s for the Plateau before the front gets there.
1047 PM CDT Sun Sep 25 2016 Surface cold front has moved through the forecast area, with cooler and drier air advecting in behind the boundary. A slow- moving highly amplified upper trough evolving over the Great Lakes into the Ohio Valley region will supply the area with reinforcing shots of cool air during the week with persistent northwesterly to northeasterly H85 flow, and dry atmospheric moisture resulting in no appreciable weather expected through the period.
408 PM CDT SUN SEP 25 2016 High pressure at the surface over the eastern Great Lakes. Cold front from Minnesota to Missouri to Texas. Weak mid level low over the Florida Panhandle, with a strengthening upper trough over the northern Great Plains in the process of breaking down the upper ridge. Upper ridge will continue to break down as upper trough moves through the Great Lakes.
1034 PM EDT Sun Sep 25 2016 Tranquil early fall weather will persist through Monday, as a large area of Canadian high pressure crosses the region.
1143 PM CDT SUN SEP 25 2016 /06Z TAFS/ A cold front has moved through the area tonight, turning winds to the north, and bringing low clouds into the area. Cold front is now south of the forecast area with north to northeasterly winds in its wake, generally in the 10 to 20 knot range. KABI is expected to see improving conditions by 06Z as drier and cooler air moves in behind a cold front that is sweeping south across the area. Showers are expected to persist through the overnight hours as well as humid air is lifted over the top of the cooler surface air mass. The upper level low is located over northwest Mexico, with additional short wave energy upstream of our area. Also, a cold front moving south will provide some lift too.
KAMX detects widely separated showers and isolated thunderstorms over the Lower and Middle Keys, as well as over nearshore and offshore waters surrounding the Lower and Middle Keys. Temperatures are in the lower 80s. In the low to mid levels of the atmosphere, a weak pressure pattern will prevail overnight. In the upper levels of the atmosphere, an area of low pressure will progress to the east-southeast through the northeastern Gulf of Mexico tonight.
1023 PM EDT SUN SEP 25 2016 A warm front stretched across the area will lift north tonight. While most showers overnight will stay east of the mountains, it's possible a few showers may develop along the high terrain near the TN/NC line. For tomorrow, a cold front will move into the Tennessee River Valley. Chattanooga Airport, TN 70 88 61 81 / 10 50 40 10 Knoxville McGhee Tyson Airport, TN 69 87 60 78 / 10 60 60 10 Oak Ridge, TN 69 86 58 79 / 10 50 50 10 Tri Cities Airport, TN 63 83 57 75 / 10 70 70 20.
Latest subjective surface analysis indicates the cold front has reached a line from near Mountain Home, to Mena. 55 Cold front now across extreme northwest Arkansas will continue to move southeastward, reaching southeast Arkansas between 06z and 09z. The surface and upper high pressure systems have moved east, and a cold front in northeast OK and south-central MO slow moves southeast.