Aikyam-Lab/Synoptic-Bench huggingface dataset:
An upper ridge to our west will flatten this afternoon and allow some cirrus to move into the region. Slightly warmer temperatures are expected tomorrow under partly cloudy skies with passing mid to upper level clouds. This will result in slightly warmer overnight lows, ranging from the mid 50s to the lower 60s.
High level clouds will continue to clear through the day as an upper level ridge builds in from the southwest. Increased today's high temperatures slightly, especially across the Lower Columbia Basin and through Central Oregon.
1250 PM EDT Thu Sep 23 2021 Cool and cloudy conditions will prevail in the wake of the cold front. The large Great Lakes low pressure will continue to eject north into Ontario and Quebec. Drier air will be able to filter into the low- and mid- levels such that the sun will be able to shine and temps rise from the 40s at dawn to the 60s by afternoon. Long range ensembles indicate that high pressure early this weekend will be followed by a cold frontal passage which will result in precip chance. With strong cold air advection behind the exiting cold front, persistent high IFR/low MVFR cigs are expected through much of the day.
300 PM EDT Thu Sep 23 2021 Cooler and drier through Friday.
1141 AM MDT Thu Sep 23 2021 As models had predicted the mid-level trough over the Pacific Northwest began to deepen over the Great Basin early this morning. Cirrus moving out ahead of this system has begun to move over the region during the night and will increase today as the trough deepens and its axis shifts eastward over central Utah later today. The trough splits tonight with a closed low forming over Utah drifting southward over Arizona later tonight.
104 PM EDT Thu Sep 23 2021 A slow-moving cold front will push through eastern Pennsylvania today.
A cold front across central North Dakota, highlighted by a band of mid and upper level clouds, will continue to move east through the afternoon. The clouds across Montana are due to increasing upper level flow to the west of an upper trough axis digging into the northern Plains. Guidance over the past couple days has trended slightly lower with winds due to ridging and high pressure building into the area quicker behind the exiting trough, relaxing the surface pressure gradient.
Closer to the end of the forecast period, a weak cold front could move into the northern Panhandles and would shift winds at KGUY to more northerly. Friday, as a northern stream longwave trough advances from Lake Winnipeg to northern Minnesota, an associated cold front will advance south through the Plains.
Highs will climb into the low to mid 80s with mostly clear skies. Plenty of sunshine is in store for today, with afternoon highs topping out in the lower to mid 80s across the region. Overnight lows tonight will once again fall into the lower to mid 50s across the region under mostly clear skies. As we move into Friday we will see broad upper level ridging across the western CONUS that will help our region remain under northwest flow aloft. This will also cause temperatures to increase by a few degrees here and there from what we are expecting today, with afternoon highs on Friday ranging from the lower 80s to mid 80s, with the warmer temperatures across our western zones.
114 PM EDT Thu Sep 23 2021 A low pressure system will slowly drift north through the Great Lakes today and into southern Canada tonight. As the low pressure system exists the region, showers will end and winds will diminish. High pressure will offer clearing skies overnight and abundant sunshine Friday.
1208 PM CDT Thu Sep 23 2021 (Today and tonight) Slightly warmer and drier conditions expected today as high pressure continues to build into the region.
Issued by National Weather Service Salt Lake City UT 312 PM MDT Thu Sep 23 2021 A mid-level trough deepening over the Great Basin today is pushing thickening high clouds through eastern Utah and northwest Colorado. These clouds will continue to translate eastward through the forecast area late today as the trough deepens and its axis shifts eastward over central Utah later today. The trough splits tonight with a closed low forming over Utah drifting southward over Arizona later tonight.
920 PM EDT Thu Sep 23 2021 High pressure will build northwest of the region through Friday as a coastal trough slides southward down the Atlantic coast and shifts inland into Friday evening. Winds increase from the ENE near 15 kts into Friday afternoon trailing a coastal trough sliding down the SE Atlantic Bight. High pressure will be to the northwest through Friday, as front lingers to the east southeast of the region. Lows in the 50s will be common across inland areas of SE GA, with lows in the lower to middle 60s at the coast. A dry day is expected for Friday, but a few more clouds expected South due to weak inverted troughing, and moisture increasing as flow becomes more onshore in the afternoon.
724 PM EDT Thu Sep 23 2021 Cooler and drier through Friday.
538 PM MDT Thu Sep 23 2021 00Z TAF CYCLE Abundant high clouds have spread over NM in advance of a weak low pressure system now over SE AZ. High pressure over the Desert Southwest will get shunted eastward, as a low approaches.
However, farther south lows will remain in the low 70s. A weak cold front across central Florida will move slowly southward toward to just south of the Treasure Coast waters tonight.
718 PM EDT Thu Sep 23 2021 Cool and Dry high pressure builds in across the southeastern United States today.
Temperatures behind this front could then cool into the 30s northwest to the low 50s southeast. A cold front across central North Dakota, highlighted by a band of mid and upper level clouds, will continue to move east through the afternoon. The clouds across Montana are due to increasing upper level flow to the west of an upper trough axis digging into the northern Plains. Guidance over the past couple days has trended slightly lower with winds due to ridging and high pressure building into the area quicker behind the exiting trough, relaxing the surface pressure gradient.
641 PM CDT Thu Sep 23 2021 A few high clouds are beginning to move into the region from the west ahead of an approaching cold front. By early Friday morning, the cold front will be knocking on western Minnesota's door with rain chances steadily increasing and expanding eastward through the early afternoon. Western Wisconsin and southeastern Minnesota will have the highest chances of getting a few rumbles of thunder where the atmosphere will have a shot a destabilizing before the front arrives. Overall, QPF amounts remain rather unimpressive with the highest totals across western Wisconsin. CAA works in with clearing skies and will drop overnight temps back into the low 40s and upper 30s area wide.
/issued 233 PM CDT Thu Sep 23 2021/ Skies remain sunny across the Mid-South this afternoon with temperatures in the low to mid 70s. High pressure covers much of the area just west of the Mississippi River. The center of high pressure will move over the Mid-South tonight keeping things dry and cooler across the region. Temperatures will remain below normal with lows Friday morning in the low to mid 50s. This will allow warmer air to return to the region. Temperatures will be a couple of degrees warmer with highs in the mid 70s to around 80 degrees.
VFR will prevail through the period as high pressure continues dominating the southeastern US.
The high pressure shifting eastward by tomorrow morning will allow for winds to be rather gusty by the afternoon with some gusts approaching 30mph at times.
848 PM CDT Thu Sep 23 2021 (Issued 848 PM CDT Thu Sep 23 2021) Just some mid level clouds hanging on across the far northeast this evening as low pressure starts to pull away to the east. Temps will be warmer Friday with southerly winds expected ahead of the front.
Deep upper low over the Great Lakes region lifting to the northeast. A pressure ridge (much drier air mass) centered over the Mississippi Valley is building east. With the ridge to the west and front/trough offshore, weak cold advection will continue overnight with north winds. Low temperatures will be below average once again in the low to mid 50s. High confidence forecast for Fall weather over the forecast area during this period as high pressure continues to build over the Carolinas.
720 PM EDT Thu Sep 23 2021 A strong cold front has swept through the region allowing cool air for late September to reach the Ohio Valley.
759 PM EDT Thu Sep 23 2021 Did I just see a FROPA?!? Ok, admittedly the first cold front or two of the season usually doesn't result in too much for West Central and Southwest Florida, but it has happened today nonetheless and will result in some slight weather changes over the next day or two. Farther south, where the effects from the front gradually diffused out, expect temperatures to be a few degrees warmer with higher dewpoints (I-4 corridor southward = dewpoints in the 70s). A weak cold front continues to push across our forecast area this evening and will stall out across the central and southern coastal zones into the weekend.
Yesterday's low pressure system continues to influence the upper flow as it remains anchored over the lower Great Lakes Region. Further amplification of the upper ridge tonight will lead to a dry forecast and strong radiational cooling. As surface flow becomes southwesterly tomorrow though, temperatures will rebound a bit back into the low to mid 70s. Forecast soundings become saturated in the lower levels once again early Friday night over the northwest portions of central Indiana as that trough and associated cold front approach the area. Ensemble means support a quick frontal passage though with the best forcing in the Sat 06-12Z time frame along and ahead of that cold front.
High pressure provided the area with mostly sunny skies this afternoon. Friday and Friday night, a cold front will move into the area with scattered showers and possibly isolated thunderstorms. With skies clearing quickly behind the front, lows will slip back into the low 40s NW to upper 40s south.
This will result in slightly warmer overnight lows, ranging from the mid 50s to the lower 60s.
/issued 239 PM CDT Thu Sep 23 2021/ SHORT TERM (Tonight through Friday Night): High pressure at the surface and a modest mid-level ridge upstream have combined to push drier air overhead. Low temperatures Friday night will be a touch warmer, from the mid 60s to near 70.
/Issued 227 PM EDT Thu Sep 23 2021/ High pressure is building into the region with a cool and dry airmass settling in for the weekend.
742 PM EDT Thu Sep 23 2021 A slow-moving cold front will push through eastern Pennsylvania today.
As this low shifts toward New Mexico over the next 12 hours, a split digging down out of southern Idaho and northern Utah will reinforce a broad mean low position across southern California and Arizona Friday.
An upper low currently centered across the Lower Great Lakes will continue to lift slowly north-northeastward during the near term period, in response to a northern stream trough shifting eastward across Alberta/Saskatchewan.
528 PM MDT Thu Sep 23 2021 A mid-level trough deepening over the Great Basin today is pushing thickening high clouds through eastern Utah and northwest Colorado. These clouds will continue to translate eastward through the forecast area late today as the trough deepens and its axis shifts eastward over central Utah later today. The trough splits tonight with a closed low forming over Utah drifting southward over Arizona later tonight.
Upper ridge will bring sunny and warmer weather next several days.
Warmer temperatures will linger through Friday as high pressure builds in.
1006 PM EDT Thu Sep 23 2021 High pressure will build into the region tonight and Friday.
With a clear sky, ideal radiational cooling conditions are underway, and temperatures have already dipped into the middle to upper 50s, and probably cooler outside of the cities.
High pressure at the surface will center itself over the region tonight. Tomorrow, we will remain under a weakening trough, which will keep conditions sunny and dry. Dry air will remain persistent through the weekend into the beginning of the week as a ridge builds over the region in response to a low stretching across NM/AZ.
1032 PM EDT Thu Sep 23 2021 Cool and Dry high pressure builds in across the southeastern United States today.
This energy is pushing a secondary cold front through the region which is helping to trigger a few showers and even a thunderstorm or two over northern Montana. Northerly winds shifting to the east in the afternoon behind this evenings reinforcing cold front will hold temperatures near 70 for highs, despite plenty of afternoon sunshine. Chambers Currently have a secondary cold front making it's way across Montana, bringing with it the cold air that lacking from last night's cold front. Friday will be cooler than today in the east, with highs only reaching the mid to upper 60s, but downslope flow in south-central Montana will allow temperatures to still rise into the low to mid 70s.
314 AM CDT Fri Sep 24 2021 A cold front continues to pass through the far eastern FA early this morning. As of early this morning, the cold front was located somewhere along a Park Rapids to Elbow Lake line. Dewpoints ranged from the mid 40s along the front to the low 30s in the western reaches of the Devils Lake region. However, it is not very far to the west before dewpoints drop off to the lower 20s, under clear skies. After the mild past couple of days (in the 70s), highs today will be markedly cooler (upper 50s to low 60s) with breezy to windy conditions by afternoon. Have gone on the lower side (NBM 10 percent) for afternoon dewpoints today. That gives afternoon minimum humidity readings in the lower 20s percent along the western border of the FA.
(Friday night through next Thursday) Pleasant weather will continue across West Central Texas through the weekend, as weak high pressure aloft prevails.
Weak trough axis located near KMML-KFSD-KYKN line at 08Z, but trailing west-northwest flow still on the weak side in southeast SD. Cold front pushes southeast across the forecast area this morning, and expect to see similar conditions with increasing northwest winds and spotty light showers/sprinkles follow for a few hours following its passage.
An offshore ridge is expanding it's influence over our area tonight. With 500mb heights increasing compared to last night, am expecting temperatures to be generally a couple of degrees warmer tonight and tomorrow.
A strong ridge extends northeast from off the CA coast into British Columbia. Moderately strong closed lows were located over 1. Atmospheric moisture, especially in the low levels, will remain fairly meager, but we could see some light rain showers or sprinkles out of the mid level cloud deck. Wind gusts to around 30 or 35 mph appear possible at times today - with a decent surface pressure gradient and downward momentum transfer suggested behind the cold front in forecast soundings.
Pacific ridge will flatten as it shifts slowly eastward over the next 36 hours.
With high pressure near, but not directly over, the forecast area winds should be light to calm overnight. We believe temperatures will be on the cooler end of the guidance spectrum since this is typical of nights with strong radiational cooling.
258 AM EDT Fri Sep 24 2021 A dry and pleasant fall weekend is in store, with high pressure giving plenty of sunshine.
1021 PM CDT Thu Sep 23 2021 High pressure and clear skies prevail across the region. /issued 233 PM CDT Thu Sep 23 2021/ Skies remain sunny across the Mid-South this afternoon with temperatures in the low to mid 70s. High pressure covers much of the area just west of the Mississippi River. The center of high pressure will move over the Mid-South tonight keeping things dry and cooler across the region. Temperatures will remain below normal with lows Friday morning in the low to mid 50s. This will allow warmer air to return to the region. Temperatures will be a couple of degrees warmer with highs in the mid 70s to around 80 degrees.
223 AM CDT Fri Sep 24 2021 Temperatures were a bit warmer than 24 hours ago, with readings ranging from the upper 40s in the eastern Ozarks to the upper 50s in southwest portions of Missouri. Temperatures will also rise into the low to mid 80s across the area. Temperatures tonight will be a bit warmer with some cloud cover with lows in the low to mid 50s.
Clouds will diminish throughout the morning with dry advection and increasing subsidence on the southern flank of an exiting low pressure system over the Great Lakes. The Great Lakes low pressure center is projected to dig northward over Ontario and Quebec. Dry advection in the low and mid levels will improve insolation today such that, with developing warm advection, temperature recovery to near the calculated-normals is forecast.
Clouds will race back into the area tonight ahead of a cold front.
349 AM CDT Fri Sep 24 2021 The key messages for the next couple of days is a cold front moving through the region today and bringing a narrow band of rain. Despite these light amounts, have increased pops toward the higher end of guidance as confidence continues to increase that there will be some rain drops falling from the sky as the cold front passes through.
Warmer, drier and breezy conditions are expected this weekend as a west to southwest flow develops across the area. A NW flow aloft continues across MT behind an upper level trough moving east across the north-central US, while upper level ridging builds in from the the Pacific Northwest into MT today and tonight.
1226 AM EDT Fri Sep 24 2021 High pressure will build into the region tonight and Friday.
141 AM EDT Fri Sep 24 2021 Cooler and drier through Friday.
206 AM CDT Fri Sep 24 2021 Breezy and warmer conditions are expected today, ahead of a fast moving storm system moving in from the northwest.
Abundant high cirrus will spread over the area this afternoon as a weak upper low moves over the area.
1248 AM CDT Fri Sep 24 2021 For the 24/12Z TAF update, VFR conditions will prevail through the period as high pressure continues to build in across Texas, maintaining northwesterly flow and high cloud decks into our airspace. Our winds are calm now and will trickle in E or SE very light after midnight, especially in TX counties as high pressure start to slide eastward. We are looking good for the forecasted lows in the low to mid 50s area wide with no changes needed anywhere.
/issued 1021 PM CDT Thu Sep 23 2021/ High pressure and clear skies prevail across the region. /issued 233 PM CDT Thu Sep 23 2021/ Skies remain sunny across the Mid-South this afternoon with temperatures in the low to mid 70s. High pressure covers much of the area just west of the Mississippi River. The center of high pressure will move over the Mid-South tonight keeping things dry and cooler across the region. Temperatures will remain below normal with lows Friday morning in the low to mid 50s. This will allow warmer air to return to the region. Temperatures will be a couple of degrees warmer with highs in the mid 70s to around 80 degrees.
Some cooler temperatures may return tonight, with perhaps some patchy front in the northwest. Temperatures behind this front could then cool into the 30s northwest to the low 50s southeast. A cold front across central North Dakota, highlighted by a band of mid and upper level clouds, will continue to move east through the afternoon. The clouds across Montana are due to increasing upper level flow to the west of an upper trough axis digging into the northern Plains. Guidance over the past couple days has trended slightly lower with winds due to ridging and high pressure building into the area quicker behind the exiting trough, relaxing the surface pressure gradient.
An easterly breeze picks up a bit tomorrow as high pressure sets up over the Southeast and northern Gulf of Mexico. /issued 239 PM CDT Thu Sep 23 2021/ SHORT TERM (Tonight through Friday Night): High pressure at the surface and a modest mid-level ridge upstream have combined to push drier air overhead. Low temperatures Friday night will be a touch warmer, from the mid 60s to near 70.
1116 PM CDT Thu Sep 23 2021 A few high clouds are beginning to move into the region from the west ahead of an approaching cold front. By early Friday morning, the cold front will be knocking on western Minnesota's door with rain chances steadily increasing and expanding eastward through the early afternoon. Western Wisconsin and southeastern Minnesota will have the highest chances of getting a few rumbles of thunder where the atmosphere will have a shot a destabilizing before the front arrives. Overall, QPF amounts remain rather unimpressive with the highest totals across western Wisconsin. CAA works in with clearing skies and will drop overnight temps back into the low 40s and upper 30s area wide.
A cold front has moved into the forecast area. The cold front is expected to be in the far southeast part of the area around daybreak and move out of the area early this morning. Temperatures will be a little cooler behind the front today.
Another gorgeous fall-like day will be on tap as high pressure remains situated to our east. Anti-cyclonic flow around the high will result in southerly to southwesterly winds in place through the day, though they will be light (<10kts). Highs this afternoon will top out in the low to mid 70s under cerulean skies.
The next chance for precip is Friday night as a weak cold front moves across the state. The next trough will approach from the Plains on Friday, helping to boost southwesterly winds into the 15 to 25 mph range, with gusts over 30 mph possible. Low pressure is centered over eastern lower Michigan this afternoon while a ridge of high pressure is inching east to the Mississippi River Valley. Breezy northwest winds are in place across central Illinois between these features, but expect winds to drop off around sunset with loss of daytime heating and as the gradient continues to weaken with the approaching ridge axis. Winds will back to the southwest overnight as the ridge passes through the area. By Friday, the ridge will shift to our east with return flow overspreading central Illinois.
With lingering high cloud cover tonight, a slightly warmer night is in store with low temperatures in the mid 50s to mid 60s. This will result in slightly warmer overnight lows, ranging from the mid 50s to the lower 60s.
Clouds will diminish throughout the morning under dry advection and increasing subsidence as high pressure builds to our south and a low pressure system exits north into Quebec.
This morning, a ridge of high pressure to our west and a trough of low pressure to our east are creating northwest flow aloft over the Northern Rockies. The ridge axis makes its way over western Montana and central Idaho by tonight. By tonight, the ridge flattens and flow turns westerly.
High pressure over the Desert Southwest will get shunted eastward, as a low approaches.
245 AM MDT Fri Sep 24 2021 08Z analysis shows an upper level low centered over northern Manitoba with an upper trough swinging across the forecast area. Enhanced lift due to the upper trough and a surface boundary crossing the area is producing areas of scattered showers early this morning.
Models were in good agreement with a cold front crossing southwest Kansas late this morning and early this Friday afternoon as an upper level trough exits Canada and crosses the Northern Plains. Also as this cold frontal boundary passes the southerly winds will shift to the northeast and increase into the 15 to 20 mph range. Temperatures behind this front based on the cooling forecast trends in the boundary layer are expected to average from around 5 to near 10 degrees cooler than yesterday with the coolest temperatures this afternoon occurring north of the I-70 corridor. Further south, especially near the Oklahoma border, where the cold frontal passage will occur late day it will be another warm day with temperatures in the 85 to near 90 degree range. Tonight an area of high pressure will begin to build into western Kansas.