Aikyam-Lab/Synoptic-Bench huggingface dataset:
1044 PM CDT Mon Sep 5 2022 (This evening through Tuesday) Drier airmass in place today has limited shower and thunderstorm development in our area, with activity instead focused to our south and east on the east side of the upper low clearly evident on satellite across southeast Oklahoma. The upper trough axis drifts a bit further east tomorrow, which will likely take precipitation chances even further away from our area, so expect a mainly dry day. High temperatures will warm 2-3 degrees on Tuesday compared to today, with highs in the low to mid 90s across the area.
1211 AM CDT Tue Sep 6 2022 (The rest of tonight) Deep moisture wrapping around the eastern and northern periphery of a well defined upper low along the Red River once again led to scattered showers and thunderstorms this afternoon and evening. Bowlan (Tomorrow through Monday) Upper trough axis will gradually shift more to the east the next few days. By mid week the low will likely drift far enough southeast the precip chances will lessen as drier airmass moves in on the back side.
A sharp upper trough axis also remains located from the OH Valley SW into the western Gulf region.
228 AM MDT Tue Sep 6 2022 Water vapor continues to show large scale ridge over the western US and Plains. At the surface, very broad trof covers the Northern Plains. A couple more days of hot and dry weather expected before strong trof/cold front moves through.
1225 AM CDT Tue Sep 6 2022 (This afternoon through Tuesday night) Upper pattern unchanged over the last few days with a strong upper ridge entrenched over the Western US and a trough reaching from the Great Lakes to TX. On Tuesday the ridge is expected to expand eastward into the region. Temperatures will be warmer Tuesday with high pressure building in, readings into the lower 90s across much of the area with 80s for the higher elevations.
1214 AM MDT Tue Sep 6 2022 There is some lingering showers occurring over the higher mountains areas early this evening, but much of that will be diminishing by 7-8 pm. The hot and dry weather continues into Tuesday with the 597dm upper ridge centered over the NV/UT border Tuesday morning. The ridge is expected to strengthen through the day Tuesday with 700 mb temperatures staying in the 18-20C range over Colorado. A batch of moisture can be seen on water vapor that even with the ridge extending a little further east could bring some high level clouds Tuesday morning with some isolated mountain CU by the afternoon.
355 AM EDT Tue Sep 6 2022 Rain chances will lower through midweek as a slow moving low pressure system shifts east of the region. However, the upper level trough will remain parked over the area which will mean another day of clouds and the risk for scattered showers or a thunderstorm.
A ridge will build into the area through Tuesday for dry, warmer weather.
Upper low currently over north Texas will continue to shift slowly southeastward today. Otherwise, warm conditions expected with highs climbing into the lower 90s across much of eastern Oklahoma and west- central Arkansas.
(Today and tonight) The longwave trough axis from the eastern Great Lakes region southwest into northeast Texas continues to very slowly inch eastward away from the area, and with it the primary precipitation chances.
250 AM CDT Tue Sep 6 2022 Upper level ridging will continue to extend east into the area which will bring southerly winds more around to an easterly direction. Behind this wind shift in central SD dew points will likely drop into the lower 50s, possibly some 40s. Lighter winds will move across the area tonight which will allow for some slightly cooler temperatures, but still anticipate lows in the upper 50s to lower 60s as smoke could limit radiational cooling.
(Today and tonight) Upper-level ridging over the Great Basin will expand towards the forecast area today. Despite the increased ridging aloft, thickness values won't increase much today and when combined with cooler northeasterly surface flow, temperatures should peak similar to yesterday. With afternoon high temperatures in the low 90s on the Caprock and mid to upper 90s east of the escarpment under mostly sunny skies.
Temperatures had fallen to the low to mid 40s with the exception of the western U. Afternoon humidity will drop into the 25-35 percent range as dry air is mixed down from the low to mid levels. Temperatures will be seasonable in the low to mid 70s. Yoopers should expect a gradual warming trend as the upper level ridge flattens and a warmer airmass builds into the region.
247 AM MDT Tue Sep 6 2022 The H5 high remains roughly centered over central Utah with ridging extending northward across the forecast area. The steering flow around the ridge continues in a prime direction to pull smoke from fires in Idaho into the state.
1039 PM MDT Mon Sep 5 2022 Massive western CONUS hot ridge will remain anchored to the west through mid week, supporting hot and dry conds locally. Deeper NW Pac upper trough will then advect into the northern plains toward the end of the week, supporting a strong cold front into the region Thur.
WV imagery indicates a building upper level high centered across the Great Basin while expanding eastward well across the Western High Plains into portions of the Central Plains. Near the surface, a weak lee side trough of low pressure remains anchored in eastern Colorado.
The lower, MVFR cloud layer, has been diminishing in coverage the last few hours. An upper level trough has been over the Great Lakes the last few days, unable to make much progress eastward as a strong blocking pattern has been in place with a ridge over the SE conus and another over the western half of the conus. Models show the SE conus ridge to be breaking down tonight and tomorrow allowing forward propagation of the longwave pattern to commence.
125 AM EDT Tue Sep 6 2022 A dry airmass and high pressure continue to dominate the region, and brought the region a mostly clear sky day. For the remainder of the afternoon, some additional warming is expected, and some folks should dip into the low 70s. Yoopers should expect a gradual warming trend as the upper level ridge flattens and a warmer airmass builds into the region.
1257 AM EDT Tue Sep 6 2022 Rain chances will lower through midweek as a slow moving low pressure system shifts east of the region. However, the upper level trough will remain parked over the area which will mean another day of clouds and the risk for scattered showers or a thunderstorm.
652 AM EDT Tue Sep 6 2022 Rain chances will lower through midweek as a slow moving low pressure system shifts east of the region. However, the upper level trough will remain parked over the area which will mean another day of clouds and the risk for scattered showers or a thunderstorm. Some improvement is expected on Wednesday as the upper trough begins to shift to the northeast. Temperatures will remain cooler than normal.
623 AM EDT Tue Sep 6 2022 High pressure will build slowly south across the region today then remain over the area tonight into Wednesday.
A strong high pressure system over the western United States will remain in place through the middle of the week. High pressure will weaken toward the end of the week leading to decreasing temperatures and an increasing chance of thunderstorms as monsoon moisture spreads back into Arizona. A strong high pressure system continues to be centered over Utah and Nevada, influencing the warm temperatures we've seen recently. This warning is valid for the lower elevations of the Grand Canyon and up to Page.
554 AM CDT Tue Sep 6 2022 (Today through Wednesday night) High pressure system remains in control of the weather pattern over the Panhandles during the short term period. H500 northeasterly flow near the periphery of a large domain high pressure system centered over Utah will be quasi-stationary through tomorrow night as the stronger H300 steering flow jet is displaced well to the north over the Canadian border. Large scale subsidence over the domain of the high pressure system will keep the Panhandles dry. High temperatures today will range from the lower to mid 90s across the Panhandles. High temperatures tomorrow will be a tad bit warmer with some areas in the northern Panhandles getting as high as the upper 90s as a drier airmass settles in across the region compared to today.
611 AM CDT Tue Sep 6 2022 (Today and tonight) Upper-level ridging over the Great Basin will expand towards the forecast area today. Despite the increased ridging aloft, thickness values won't increase much today and when combined with cooler northeasterly surface flow, temperatures should peak similar to yesterday. With afternoon high temperatures in the low 90s on the Caprock and mid to upper 90s east of the escarpment under mostly sunny skies.
The regional 12Z RAOBs sampled a small low level anticyclone over the northeastern Gulf of Mexico. The 500 mb heights suggest the low level circulation is vertically stacked with the mid level circulation. Water vapor imagery places a large mid-latitude trough complex over the Plains and a dying TUTT circulation near the Yucatan Channel. The forecast calls for highs in the lower 90s with slight (20%) rain/thunder chances through the afternoon. High tides associated with the coming full moon will result in less clearance under low fixed bridges. High pressure over the western North Atlantic will weaken today and tonight, with diminishing easterly breezes across the Keys coastal waters.
Ridge rebounds slightly on Wednesday, but with downslope flow out of the heat dome in the Great Basin expect temperatures to soar to near or above 100 degrees. Upper trof swings across the northern plains through the end of the week.
(Today through Wednesday Night) Activity is continuing over the Gulf waters along the coastal trough as slightly drier air filters into the CWA. Highs today will range from the lower 90s for most areas. Low temper- atures tonight (and tomorrow night) will be in the lower 70s. The forecast for tomorrow could feature slightly more activity over SE TX as the upper low sinks a bit closer to the CWA.
525 AM MDT Tue Sep 6 2022 Water vapor continues to show large scale ridge over the western US and Plains. At the surface, very broad trof covers the Northern Plains. A couple more days of hot and dry weather expected before strong trof/cold front moves through. Wednesday looks to be the hottest day as thermal ridge peaks across the area.
150 PM MDT Wed Aug 11 2021 A cold front will bring a northerly wind shift through early this evening. Northwesterly flow continues over the Northern Rockies as upper level ridging builds over the Pacific Northwest, and an elongated upper disturbance within the northwesterly flow is helping to push a shallow cold front south across the plains this afternoon into this evening. Some cooler air in the wake of the front will bring a temporary dip in temperatures for Thursday, mostly over the plains.
/issued 911 AM EDT Wed Aug 11 2021/ High pressure from the Atlantic extending west-southwest across the northern Florida peninsula is supporting clear skies and light east winds across the forecast area early this morning. High pressure to the north of the area will maintain east southeast winds around 10 knots with slight seas over the Gulf waters the remainder of today with an onshore sea breeze component developing along the coast during the afternoon.
A front has sagged south of the area, allow for high pressure and east-northeasterly flow to spread over the area. Some gusts over 20 mph at times, with area temperatures ranging in the lower to mid 90s. The latest RAP40 500 mb analysis and water vapor loop do show a persistent northwest flow over the area, with upper ridges on each coast, and a broad trough/low over the central portion of the country into Canada.
Winds will remain light with high pressure ridging over the area. High temperatures will be near normal, in the low to mid 90s.
While most locations are expected to stay rain free today, a subtle inverted trough passing to the south, should help to activate the seabreeze across the mid- Texas coast and result in the opportunity for isolated convection that should remain confined to the coastal plains.
High pressure will remain in control of area weather through the period, resulting in typical summer weather. Mins tonight and Thursday night will fall to the low to mid 70s with highs Thursday in the lower 90s except upper 80s nearer the coast.
Flow aloft becomes more northwesterly on Thursday as the upper trough axis nudges east.
High pressure ridge will extend across the region from a center to the northeast this period.
ABM Chattanooga Airport, TN 74 92 73 92 73 / 20 50 10 50 20 Knoxville McGhee Tyson Airport, TN 74 93 72 92 72 / 20 40 10 60 30 Oak Ridge, TN 72 93 72 92 71 / 20 40 10 60 30 Tri Cities Airport, TN 70 91 70 90 68 / 20 50 10 60 30.
1" over the W-NW Gulf this morning upstream of an inverted trough. Although the inverted trough is forecast to decay to our west tonight into Thursday, mid-level lapse rates actually improve over much of the Coastal Plains and Crossroads as cooler H7 temps arrive.
Another cold front passes over NE MN this evening, which may bring some scattered showers to the area. Relative humidities will once again be in the low 30s which may lead to some near-critical fire weather concerns, particularly along and north of the MN Iron Range.
/NEW/ /Through Thursday/ A lee-side trough along the Front Range and a Bermuda high to our east will maintain the southerly low level flow across the region.
1120 AM EDT Wed Aug 11 2021 Currently - A lower tropospheric ridge extending westward across the far southeastern United States is producing gentle to moderate easterly breezes across the Keys. Short Term Update - Ridging will continue to dominate Keys weather through the afternoon.
Mostly clear skies this morning will allow in an abundance of heating with dew points in the low to mid 70s, setting the stage for dangerous heat. High temperatures this afternoon will peak in the mid to upper 90s as dew points mix only to the low 70s. A weakness in the upper level ridge aloft has led to isolated showers and storms to the east of the TN Valley this morning.
Westerlies aloft are confined to the northern Tier of the country, enhanced at the base of a deepening trough over Canada. This trough will send a cold front south into northern Kansas which will focus greater diurnal coverage than we've seen in recent days just to our north.
However, with temperatures also a little cooler, humidity levels bottom out 30-40 percent range, so not expecting any significant fire weather concerns.
Synoptic & sfc pattern into Thursday will translate more into a digging trough over the N Plains/Great Lakes & S Canada, with any frontal zone well off to the N.
00Z upper air analysis/GOES-16 Satellite trends continue to depict an upper level ridge axis present across the Southeast United States and Lower Mississippi Valley. This is resulting in surface dewpoints remaining in the lower to middle 70s across the Mid-South. Little if any change is expected through Thursday as the upper level ridge remains in place across the Lower Mississippi Valley and a capping inversion keeps convective potential a minimum at best. Afternoon highs will be mostly in the lower to middle 90s with a few locations approaching the upper 90s, especially near the Mississippi River.
139 PM MDT Wed Aug 11 2021 Warm and dry conditions will continue today through Thursday morning as high pressure strengthens over the western CONUS. Wind this afternoon should generally remain below critical fire weather values, but still have low minimum relative humidity across the lower elevations, especially southern areas. On Thursday a weak cold front will try to push in from the northeast. This will lead to slightly cooler temperatures and elevated relative humidity values across areas east of the Divide.
/Issued 421 AM CDT Wed Aug 11 2021/ For today and tonight, the upper level ridge of high pressure will begin reorganizing to the west and northwest of the region. A weak upper level low pressure system meandering around the area through tonight coupled with adequate moisture, daytime heating and attendant atmospheric instability could result in the development of isolated to widely scattered showers and thunderstorms late this afternoon and tonight, mainly across western and southern sections of the combined OK and TX Panhandles. For Thursday and Thursday night, the upper level ridge of high pressure is progged to continue reorganizing over the Intermountain West. An inverted upper level trof or mid level weakness becomes apparent across the southern high plains resulting from the ridge of high pressure to the northwest and a second ridge of high pressure over the southeast states.
331 PM EDT Wed Aug 11 2021 Currently - A surface through mid level ridge extending westward across the far southeastern United States is producing gentle to moderate easterly breezes across the Keys and surrounding waters. Forecast - The previously mentioned ridge will remain across far southeastern United States over the next few days, keeping gentle to moderate breezes across the Keys.
(This evening through Thursday) Mainly hot and dry conditions will continue across the area into Thursday as upper level ridging dominates. Showers and thunderstorms may develop across the higher terrain to our south and west late this afternoon and early evening. Otherwise, dry weather will prevail the next 24 hours, with lows tonight in the lower and middle 70s, with highs tomorrow mainly in the upper 90s.
Gusty southerly to southwesterly winds on the order of 25 to occasionally 35mph are ongoing across the area this morning thanks to a tight pressure gradient from a cold front located across KS and high pressure maintaining across the southeastern US.
133 PM EDT Wed Aug 11 2021 Seasonable warmth, humidity, and periodic showers and thunderstorms can be expected until cold frontal passage late this week.
The mid level high pressure that has suppressed rain chances the past several days is moving away from Deep South Texas. This coupled with higher PWATs from a weak inverted trough moving in from the east will allow for a couple of sea breeze showers and storms to return Thursday.
/Issued 1212 PM CDT Wed Aug 11 2021/ /Through Thursday/ A lee-side trough along the Front Range and a Bermuda high to our east will maintain the southerly low level flow across the region.
Slighlty drier dew points in the upper 50s are noted to the west of this trough with much more rich surface dew points in the mid 60s pooling out ahead of the trough. The location of the trough may be off by a number of the CAMS which had been initiating convection father north and more in and east to west orientation through the day. Once the convective threat ends this evening, another mild night is expected with most model guidance showing low 70s for overnight lows over the higher moisture air southeast sections. The cold front now extending from northeast Nebraska into extreme northeast Kansas is likely to be somewhere across the DDC forecast area on Thursday, and as such, probably the focus for another round of convection.
332 PM EDT Wed Aug 11 2021 A trough to the north is placing a frontal boundary just to the north of the area.
336 PM EDT Wed Aug 11 2021 High pressure will prevail across the area into the upcoming weekend.
316 PM EDT Wed Aug 11 2021 Upper level high in the Atlantic will continue to dominate our weather this afternoon into tomorrow. Tomorrow afternoon continued advection of moisture off the Atlantic will become trapped under the upper high. By tomorrow afternoon the CWA will sit on the periphery of this high resulting in another afternoon of scattered, diurnally driven rain showers and thunderstorms.
Storm motions continue to favor discrete storms off the cold front.
Cold front is heading this way, just about to move through Great Falls at this time. Thursday will be dry and much cooler with temperatures in the 75 to 85 degree range. Chambers Ridge of high pressure moves in from the west and brings back the heat with it.
A ridge of high pressure will begin to take hold of the Great Basin today, resulting in dry conditions for the majority of the forecast area. Upper level ridging will persist over the western CONUS on Thursday, resulting in another warm and mostly dry day. The synoptic pattern will remain largely unchanged into the weekend as high pressure continues to dominate the Great Basin. Subtropical moisture will gradually trickle underneath the ridge over the southern and central mountains through the period and recycle each afternoon, resulting in daily showers and storms.
244 PM EDT Wed Aug 11 2021 High pressure will remain anchored off the Mid Atlantic coast this week, resulting in typical summer conditions.
/issued 310 PM CDT Wed Aug 11 2021/ Skies are mostly sunny with temperatures in the low to mid 90s. High pressure remains along the Tennessee/North Carolina border. The high will not move much tonight with dry weather continuing.
High pressure that follows will be a little milder and continued dry and breezy. An upper ridge over the Western CONUS and upper trough over Eastern Canada/Hudson Bay will be in place through the first half of this period.
Cooler and breezy on Thursday with highs in the 70s expected.
The upper level low currently between Galveston Bay and Matagorda Bay will slowly move southwestward tonight, before eventually moving out of the CWA by early tomorrow morning. As the upper level low continues to move away from the area, onshore flow will continue to pump in more moisture tomorrow. Temperatures tomorrow are expected to once again climb into the lower to mid 90s across the area.
A western ridge continue to be semi-permanent anchored in place over the west coast areas.
A cold front will bring a northerly wind shift through early this evening. Northwesterly flow continues over the Northern Rockies as upper level ridging builds over the Pacific Northwest, and an elongated upper disturbance within the northwesterly flow is helping to push a shallow cold front south across the plains this afternoon into this evening. Some cooler air in the wake of the front will bring a temporary dip in temperatures for Thursday, mostly over the plains.
Heat continues to be the highlight of the short term, with continued chances mainly for afternoon showers and thunderstorms through the forecast. 850 mb temps of 20C-22C allowing for highs in the mid 90s, and continued southwesterly flow at the surface keeping dewpoints in the low to mid 70s. Winds picked up a bit more this afternoon, and likely allowed for some additional low level mixing which helped lower dewpoints to the low 70s for most. For Thursday, highs are expected to be a degree or two warmer for most areas, with little change to the dewpoints, so have the heat advisory continuing tomorrow as well.
659 PM CDT Wed Aug 11 2021 This morning's cold front has cleared the CWA and with it goes the threat for showers and thunderstorms. High pressure will slide eastward south of the forecast area tonight and winds will become more SW, which will increase the moisture slightly into the area before another cold front passes across the forecast area from northwest to southeast overnight into the early morning. Much drier air will move into the forecast area behind the front with dewpoints falling into the 40s by tomorrow night which will set the stage for a very pleasant night, if not a bit on the cool side, with low temperatures in the low to mid 50s for most, with upper 50s for the core Twin Cities metro.
802 PM EDT Wed Aug 11 2021 Warmth, humidity, and periodic showers and thunderstorms can be expected until cold frontal passage late this week.
High temperatures will be in the low to mid 90s with lows in the low to mid 70s. Low temperatures will mostly be in the lower to mid seventies.