Aikyam-Lab/Synoptic-Bench huggingface dataset:
Meanwhile, temperatures will exhibit a hearty warming trend through this weekend as daily temperatures surge into the mid-to-upper 80s beneath a strong, late-summer heat ridge. While the large upper low was centered near Buffalo NY early this afternoon, the fringes of the circulation continues to bring cloud cover east of I-57, though it has appeared more diurnal as of late. Otherwise, clear skies to prevail overnight, with lows mainly in the lower 50s. High pressure will slowly drift east through Wednesday, keeping our weather quiet. With more of a southeast flow setting up, temperatures should reach the lower 80s for highs.
(Tonight) Temperatures are currently in the 60s throughout the TN Valley and are expected to drop below-normal into the lower to upper 50s as the night progresses. We expect a temperature inversion-caused ridge/valley split, with a temperature spread of 5-10 degrees between the valleys and areas of higher elevation.
(This evening through Wednesday) Large trough over the eastern CONUS continues to move through the area. Highs will be in the mid 80s tomorrow, so a bit warmer than today as our cool continental airmass modifies a bit.
Isolated showers and thunderstorms, mainly over the higher terrain.
/Issued 1157 AM CDT Tue Sep 13 2022/ /Through Wednesday/ Ridging aloft will keep quiet weather in place through Wednesday. Abundant sunshine and the return of southerly winds will result in warmer temperatures both today and tomorrow. Compared to yesterday, temperatures will be several degrees warmer area-wide this afternoon, with highs topping out in the upper 80s across the east to mid 90s across the west. Thankfully, dew points will remain low through the overnight hours tonight, providing us another cooler night with low temperatures falling into the 60s.
Meanwhile, upper riding extends through the High Plains. At the surface, cold front extends across the Northern Plains with Lee troughing in place across eastern CO. Upper trough over the Great Basin is expected to slowly track east tonight into Wed, pushing the upper ridge east. This will allow Lee troughing to increase, spreading gusty south winds across the region. Upper energy will continue to slowly track east on Thu and will move out into the High Plains for late Thu afternoon through Thu night. Confidence remains high that above normal temps will continue through the work week with highs generally in the low to mid 90s.
634 PM CDT Tue Sep 13 2022 The short term forecast looks quiet as high pressure dictates the sensible weather in the Mid-Mississippi Valley. An incoming upper level ridge and dry air throughout the atmosphere will keep showers away and skies clear.
It will be dry and notably warmer for the remainder of the week. This activity will diminish this evening as the low departs. A 588dm ridge builds through the remainder of the week.
400 PM MDT Tue Sep 13 2022 Current surface map places lee-side trof across Montana into Wyoming. Active southwest flow continues through the weekend with several impulses ejected from western trough.
Slightly cooler than normal overnight during the mid week. Broken mainly mid and upper level clouds remain over the Low Country with mostly clear skies for the Midlands through the Upstate. Afternoon dewpoints ranged from the low 50s in the central and western Midlands to the upper 60s in the southeastern Midlands and southern CSRA. Overnight lows will be in the upper 50s to low 60s across the area and slightly warmer near area lakes.
1058 PM EDT Tue Sep 13 2022 High pressure will then provide dry and comfortable conditions for the remainder of the week and into the weekend. Dry weather with a few stratocu clouds are expected overnight as an upper low departs, and sfc ridging builds across the region.
Another system will sweep across the region this weekend, bringing another shot of cooler air and a better chance of light rain.
This system could bring some mainly light snow over the highest elevations of the Sierra Nevada.
Dry surface ridging will remain in place through the short-term portion of the forecast leading to fairly tranquil weather.
A large trough of low pressure very slowly lifting toward the northeast will produce scattered to numerous thunderstorms with additional rounds of heavy rain possible tonight into Wednesday.
It has been quite an active evening across primarily the Lower Keys. Weak ridging nearby and an approaching broad trough will result in light and varying breezes becoming east to southeast tonight and tomorrow. Towards the end of the week, continental ridging will expand southeastward through the eastern United States, resulting in moderate easterly breezes by this weekend.
653 PM EDT Tue Sep 13 2022 Less humid air will start arriving into the region following a cold front today. High pressure remaining to our north will keep the weather dry and seasonable for several days thereafter. Cold front pushing offshore and dewpoints are falling. The trough driving this boundary quickly swings through the Northeast (though it does leave behind a piece of energy with little consequence on account of the drying), and this lack of latitude aloft keeps the high well to our north through the period.
DDV (Issued 333 PM CDT Tue Sep 13 2022) Tonight through Wednesday night: High pressure in the Mid Mississippi Valley this afternoon has kept conditions clear and dry across Wisconsin.
627 PM CDT Tue Sep 13 2022 (This evening through Wednesday) A mid-level ridge will continue to move eastward as a trough pushes into the Desert Southwest. The aforementioned ridge will continue to build over the Southern Plains tomorrow, which will lead to temperatures in the low 90s for most of the area.
936 PM EDT Tue Sep 13 2022 Less humid air will start arriving into the region following a cold front today. High pressure remaining to our north will keep the weather dry and seasonable for several days thereafter. Cold front pushing offshore and dewpoints are falling. The trough driving this boundary quickly swings through the Northeast (though it does leave behind a piece of energy with little consequence on account of the drying), and this lack of latitude aloft keeps the high well to our north through the period.
733 PM EDT Tue Sep 13 2022 High pressure will provide dry weather through the remainder of this week. Previous discussion: A closed low will track over Lake Erie today, then across the northeast corner of the US. The upper trough will pass over the area tomorrow with little fanfare, but the mountains may have a few more clouds than today. Overnight lows will once again dip into the upper 40s to lower 50s across the mountains and mid 50s east of the Blue Ridge.
The marine inversion is not very strong with the cooler temperatures aloft and this has allowed most coastal areas to clear out this afternoon.
Ensemble guidance in good agreement that broad longwave troughing will remain settled over the West Coast through the week, bringing below normal temperatures and higher humidity levels to interior Northern California.
This system could bring some manly light snow over the highest elevations of the Sierra Nevada.
Chambers The ridge axis is now as a far east as the Montana/Dakotas stateline. This activity will eventually drift east as far as maybe Billings during the morning tomorrow, as a cold front moves through. Once the cold front moves through during the day tomorrow, smoke should start to clear out as we start to pull in clearer air for the northwest. Temperatures will be cooler tomorrow with the cold front moving through in the morning. A significant trough will move in from the Pacific, but the evolution of this trough is highly uncertain. The ECMWF and its ensembles are more progressive while the GFS and its ensembles tend to cut off the low across the Southwest and pump more moisture northward into the area.
No changes have been made to the current forecast package as the forecast remains on track Surface cold front has stalled near the ND/SD border and is providing for some cooler temperatures with some mid to high level clouds across the north. Wednesday sees an upper level wave and an associated low pressure system move across the state. As daytime heating kicks in and the surface front turns the stall front into a weak warm front, isolated to scattered showers and thunderstorms could then be found later Wednesday morning through the day. The end of the work week sees a transitional pattern with weak ridging aloft.
704 PM EDT Tue Sep 13 2022 (Through Wednesday) A cold front currently stretches from about Valdosta to Apalachicola, slowly moving to the east. The seabreeze is making some inland progress along the Big Bend coast ahead of the cold front, and scattered storms are forming along the seabreeze late this afternoon. Drier air behind the front and clearing skies will lead to cooler overnight lows for most of the area. Lows will be in the lower to middle 60s outside of the coastal and southeast Big Bend.
931 PM EDT Tue Sep 13 2022 High pressure will build in for the remainder of the week. There may be enough of a gradient to maintain light winds overnight across much of the area, but winds may go calm in the mountain valleys as high pressure starts to build in from the Ohio Valley. Lows tonight will range from the mid-upper 40s in the mountains, to the lower 60s in the urban centers and along the bay.
310 AM CDT Wed Sep 14 2022 The stretch of dry weather will continue the rest of the week as a strong high pressure area builds into the region. Meanwhile, temperatures will exhibit a hearty warming trend through this weekend as daily temperatures surge into the mid to upper 80s beneath a strong, late-summer heat ridge. Sunny and dry conditions are expected today and tonight as a high pressure area dominates the weather across the region. Afternoon highs will be several degrees warmer than yesterday, reaching the lower to middle 80s. Ridging will continue to build into the area end of the week and into the weekend.
/NEW/ /Through Thursday/ The axis of a mid/upper level ridge which is currently situated directly overhead will progress eastward over the next few days, eventually reaching the southeast CONUS by Thursday. Subsidence associated with the ridge will maintain the seasonably warm and rain-free conditions currently in place. There will be a slight increase in moisture on Thursday as a weak trough approaches from the west, which may bring an increase in mid and high level clouds, but no precipitation is expected.
925 PM MDT Tue Sep 13 2022 Current surface map places lee-side trof across Montana into Wyoming. Active southwest flow continues through the weekend with several impulses ejected from western trough. Scattered shra/tsra will develop Wednesday afternoon/evening as a cold front moves through.
Temps are sitting right at 80 on the coast while locations in the northern half of the CWA are running in the low 60s. The upper level trough that brought this boundary to the area is quickly pushing east. From a temp perspective, just a slight bump in highs/lows expected over the next 24 hours as the trough lifts and ridge starts to move in.
426 AM EDT Wed Sep 14 2022 (Today through Thursday) Beautiful weather conditions are on tap for the short term while the upper level trough shifts its axis off to the northeast over New England/Southeastern Canada. As high pressure at the surface builds in, temperatures are expected to trend warmer through the forecast period. Today, high temperatures in the low to upper 80s while tomorrow high temperatures are forecast to reach the mid to upper 80s. In the absence of moisture in the low/mid levels coupled with the high pressure building in from the west, mostly clear skies should prevail.
Until then, the region will remain dry with increasing southeast breezes ahead of the low. This low pressure system will remain present over SD into Thursday. Ahead of the low, high temperatures will climb into the 80s to lower 90s with the good mixing and the exiting elevated smoke.
A cold front was dropping south through the Upper Peninsula, accompanied only by a wind shift. The cold front will drop south across the forecast area tonight. It will be cooler in the wake of the cold front, with highs only in the middle 60s to lower 70s.
136 AM EDT Wed Sep 14 2022 High pressure will then provide dry and comfortable conditions for the remainder of the week and into the weekend. Dry weather with a few stratocu clouds are expected overnight as an upper low departs, and sfc ridging builds across the region. Moisture and lift with the front remain quite limited, and the boundary will likely dissipate over the Ohio Valley as high pressure bridges across it.
Strengthening upper level jet streak digging across northern lower MI continues to push any remnants of the early week system to our east, while building 588 dam ridge centered over the ArkLaTex region keeps mid-level height rises ongoing throughout the day. High temperatures today remain sensitive to the pace of a southward propagating cold front, with post-frontal high temperatures in the north recovering only into the low 70s while pre-frontal high temperatures push into the mid to upper 70s further south. Thursday morning lows trend a few degrees cooler than this morning given a slightly cooler and drier post-frontal airmass and generally clear skies.
The smoke and increasing clouds will likely affect temps again today with slightly cooler numbers preferred.
(Today through Thursday) Today, an upper level ridge stays over eastern parts of the Southern Plains with ridging extending to the southwest over northern Mexico into the Pacific west of the Baja California Spur. Thursday, an upper level trough moving out across the Plains creates a weakness in the upper level pattern splitting the ridge with centers near the lower Mississippi Valley and over northern Mexico. The highest chances are near the Coastal Plains, although cannot rule out a few showers reaching the I-35 corridor prior to dissipation by sunset with loss of heating.
An area of showers and thunderstorms remains over western Arizona early this morning as a trough lifts through the southwest. As the trough continues to push northeastward, this activity is expected to move into the northern portions of Arizona through the remainder of the overnight and into the morning hours. With moisture and forcing from the departing trough still in place, another round of scattered showers and thunderstorms are expected to develop this afternoon. However, a few isolated showers over the higher terrain in central Arizona (Mogollon Rim/White Mountains) will remain a possibility.
Rua (This evening through Thursday night) Mid-afternoon sfc analysis shows our old cool front well offshore over the nrn Gulf with high pressure building overhead, centered over the ArkLaMiss. Water vapor imagery shows troffing over the ern CONUS, keeping a nwrly mid/upper-level flow in place. ridging is noted from nrn Mexico through wrn TX to the lee of the Rockies.
Otherwise, there should be enough sunshine this afternoon with little change in the low level airmass to support high temperatures into the lower 90s again. The upper trof and tropical moisture plume lifting northeastward across the Rockies later today will begin to advance eastward into the Plains on Thursday. While the low levels will remain relatively drier, the elevated moisture flux and subtle mid-level cooling will result in modest instability across portions of central Kansas, perhaps as far east as a HUT-SLN line by Thursday evening.
H500 ridging will expand over the area while sfc ridging works its way to the northeast.
Upper level trough extended from a low approaching New England into the southeast U. with upper ridging over the forecast area. No cloud cover to speak of over the region with high pressure in control and a dry air mass with PW values around 0. For today and tonight, upper level ridging will continue over the area. Lows tonight will be from the mid to upper 50s in the east and the lower 60s elsewhere. Normal highs for this time of year are in the lower 80s.
WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO There were a few showers and thunderstorms along the sea breeze arc in the high desert and along the Elsinore Convergence Zone in the Inland Empire this afternoon, which have since dissipated. Otherwise it is slightly cooler, and more importantly, drier, this evening with no 70s dew points to be seen. Modest troughing will be seen across our region for the remainder of this week, allowing for drying conditions, below-normal high temperatures and breezy onshore winds across the mountains and deserts in the afternoons.
Slightly cooler than normal overnight during the mid week.
All is quiet along the southwest KS front at 0530Z Wednesday morning, as a weak upper level ridge moves eastward across the central and southern plains ahead of a longwave trough moving over the western states. Surface lee cyclogenesis is well underway in eastern CO and adjacent portions of WY, and this low pressure center will continue to deepen through the day today fostering the first truly windy day across our area in quite some time. Still, spatiotemporal differences cast doubt on overall coverage, and pops were limited to the low-end chance category (<30%). Overnight Wednesday, elevated southerly winds and lingering cloud cover will severely dampen radiational cooling, and Thursday morning lows are only expected to drop into the low to mid 60s.
231 AM EDT Wed Sep 14 2022 High pressure, and subsequent dry weather, persists into next work week. Dry Cooler Weather Again Today. The recent arrival of and persisting high pressure will spell dry weather for today and tonight. An upper level trough will finish passing over the area today and primarily just bring some clouds for the late morning and afternoon, but we remain mostly sunny. With high pressure persisting and such dry air in place, went with the lower side of guidance for lows tonight, once again bringing many into the 50s and a few into the 40s. Zero chance of rain this period as high pressure surface and aloft keep a dome of subsidence over us this period.
The mid-latitude trough that has acted to break down the climatological ridging across the North Atlantic and Florida Peninsula is progged to slowly lift northeastward for the rest of the work week.
Tonight will be seasonable, with temperatures falling into the low to mid 50s.
(Now through Thursday) Issued at 946 PM CDT Tue Sep 13 2022 An upper level trough over the area will continue to move east and off the east coast by Thursday. An upper level northwest flow will prevail as upper ridging builds in from the west. At the surface, high pressure building into our area from the west will allow for north to northeasterly winds through Wednesday before becoming easterly on Thursday as the high moves north and east of the area.
There may be a period of slight diurnal cumulus enhancement Wednesday as a backdoor cold front drops through the area. Strong 1000-500mb geopotential height rises now crashing into the Lake Superior/northern Wisconsin region will kick the closed upper level low pressure system rapidly northeastward during the next 6-12 hours. The last of cyclonic vorticity maximum has been in place over Southeast Michigan correlating to cooler temperatures aloft and associated cumulus development. The weak, diffuse midlevel occlusion over northern Lower Michigan will be drawn southward as the low begins to pull away. Westerly flow with building upper level ridge will support moderating temperatures through the end of the week and upcoming weekend.
(Wednesday through Thursday) Beautiful weather will continue across our region of the country due in part to ridging aloft noted across the Great Plains into the Lower Miss Valley and sfc ridging noted across the Middle and Lower Miss Valley. Water vapor imagery early this morning depicts the ridging aloft to our west and lots and lots of dry air from the Upper Red River Valley, eastward into the Tenn Valley and the Appalachians. Sfc ridging to remain in place for Thursday and thus, trended close to NBM temps once again which has been in the ballpark the last couple days. Upper-level ridging should hold on tight, and potentially strengthen into next workweek.
(Today) Upper ridge over the area today with weak sfc ridging persisting across eastern half of the CONUS.
1033 PM CDT Tue Sep 13 2022 (This evening through Wednesday) A mid-level ridge will continue to move eastward as a trough pushes into the Desert Southwest. The aforementioned ridge will continue to build over the Southern Plains tomorrow, which will lead to temperatures in the low 90s for most of the area.
This activity will diminish this evening as the low departs. A 588dm ridge builds through the remainder of the week.
(Today) Quiet/near seasonal wx conditions/temps prevail across the central TN Valley this early Wed morning, as high pressure out of the Plains states gradually settles into the region. Otherwise, an upper trough pattern exiting to the east will give way to a ridge axis out of the middle/southern Plains moving into much of the western/central Gulf states. High pressure at the sfc will also drift eastward across the region today, translating into mostly sunny skies with afternoon highs in the lower/mid 80s.
/Issued 1250 AM CDT Wed Sep 14 2022/ /Through Thursday/ The axis of a mid/upper level ridge which is currently situated directly overhead will progress eastward over the next few days, eventually reaching the southeast CONUS by Thursday. Subsidence associated with the ridge will maintain the seasonably warm and rain-free conditions currently in place. There will be a slight increase in moisture on Thursday as a weak trough approaches from the west, which may bring an increase in mid and high level clouds, but no precipitation is expected.
The high will continue to bring dry weather this week and into the weekend. Pesky low clouds will slowly burn off this morning as high pressure builds into the Ohio Valley today. A large mid level ridge to build over the region at the end of the week into the weekend.
238 AM CDT Wed Sep 14 2022 The latest surface analysis is showing that high pressure was centered over southern Illinois which was bringing light winds to the area. Given the relatively warm river temperatures and expected lows in the low-mid 50s, should see some patchy fog again this morning in the river valleys before it burns off by mid morning. The HREF is showing that this high will move off to the east which will cause the winds to pick up out of the south to southeast later today into tomorrow. In the upper levels, the ridge over the Plains will slowly build into the Midwest by tomorrow which will keep us dry. Highs today will be in the low to mid 80s which will be about 5 degrees warmer than yesterday as the low levels continue to warm.
1215 AM CDT Wed Sep 14 2022 (Tonight) Temperatures are currently in the 60s throughout the TN Valley and are expected to drop below-normal into the lower to upper 50s as the night progresses. We expect a temperature inversion-caused ridge/valley split, with a temperature spread of 5-10 degrees between the valleys and areas of higher elevation.
109 AM CDT Wed Sep 14 2022 Today and tonight: Heights will rise across the Lower Mississippi Valley as a deep closed upper low centered over far northern Ohio quickly lifts northeast. In its wake, upper ridging over the Southern Plains will also shift east.
1047 PM CDT Tue Sep 13 2022 The short term forecast looks quiet as high pressure dictates the sensible weather in the Mid-Mississippi Valley. An incoming upper level ridge and dry air throughout the atmosphere will keep showers away and skies clear. Jaja The upper level ridge will be centered overtop the Midwest/Great Lakes regions by Thursday, but will weaken through the late week and weekend as the upper level trough on the east coast pulls off-shore and broad troughing arrives in the western CONUS.
(Today and tonight) The WV imagery was showing a weak upper level ridge across the Southern and Central High Plains. Also, a trough extended from Ohio to the Lower Mississippi Valley, well to our east.
Center of upper ridge will shift slowly eastward into the mid/lower Mississippi river valley today as western trough moves out of the Rockies into the Plains.