Aikyam-Lab/Synoptic-Bench huggingface dataset:
602 PM CDT Tue Apr 11 2023 (This evening through Wednesday) The forecast area is positioned to the northeast of a developing upper low over far Southeast Texas. Longwave ridging will continue to amplify over the Desert Southwest northeast to over the Midwest while an upper low will continue to gradually develop over Eastern Texas and Western Louisiana. Highs will range from around 70 in the higher elevations east and northeast to readings in the mid 70s south. A coastal/marine warm front will advance northeast into the Northern Gulf Coastal Waters while a cold front moves east across the Western Gulf of Mexico. Highs will range from the mid 70s in the higher elevations east to the upper 70s elsewhere.
756 PM EDT Tue Apr 11 2023 High pressure and a warming trend will remain in control of the area through Wednesday.
These winds will be coming down through the late afternoon and evening when a cold front ends the wind threat. The pattern will will turn cooler and wetter through midweek behind the cold front tonight.
High pressure will continue to bring near or record high temperatures rest of today.
632 PM MDT Tue Apr 11 2023 Upper level ridging continues to build across the Rockies and into the Central High Plains with increasing southwest flow aloft expected through the day Wednesday, ahead of a weather system moving across the Pacific Northwest Coast.
726 PM EDT Tue Apr 11 2023 Aviation --Dry, summerlike pattern; quite breezy Wednesday-- Thermal ridge aloft will be pushing in from the west tomorrow as west-southwest winds increase in tightening pressure gradient. Cloud cover will be limited due to subsidence under building upper ridge, and temps inland from Lk MI will make a run at 80 degrees. Wind gusts to 35 mph are likely in the afternoon as the low level jet comes across and deeper mixing takes place.
1259 AM PDT Wed Apr 12 2023 Cooler temperatures and increased winds will prevail until Thursday.
(Today through Thursday) The upper low is now beginning to cut off from the base of the upper trough and should wobble but remain over or near the TX/LA border. Today could be the highest we see these levels. A strong surge of moisture with a warm front will rapidly move inland by late afternoon/evening and this is when the heavy rain comes into the picture for the central gulf coast. The next upper trough that kicks all this mess east moves into the west coast tonight and kicks this upper low out Thu bringing all this rain east and relaxes the winds.
Further north, high pressure to the east should keep things dry with moisture return likely unable to overcome dewpoint depressions. The upper low should keep clouds around tonight across the south, with showers becoming more scattered in nature. As high pressure moves off to the east, the moisture plume will be allowed to surge northward, increasing rain chances late Wednesday afternoon and evening. /SAS/ An upper low will begin to develop out of eastern Texas, transporting moisture into our region starting late Wednesday into Thursday. The severe threat with this low seems relatively low at this time.
This activity is being supported by a warm front associated with an approaching area of low pressure over the northern Gulf of Mexico.
A ridge remains aloft owing to warmer temperatures and dry conditions.
Dry conditions continue through the short term as an upper level ridge slides over the Plains with an upper level long wave enters the Rockies. Towards the surface, lee troughing will continue to strengthen with strong southerly winds expected through tomorrow. As for temperatures, highs today look to reach into the mid to upper 80s with lows tonight dipping into the low to mid 50s. Highs tomorrow will reach into the low to mid 80s.
1224 AM CDT Wed Apr 12 2023 High pressure was sitting directly over Middle TN this evening. Under sunny skies, temperatures are mostly in the lower 70s currently with light winds. For the near term temps, with the higher dewpoint spreads, temperatures will carry seasonally wide diurnal ranges through Thursday.
310 AM EDT Wed Apr 12 2023 High pressure will maintain fair weather through Thursday, with temperatures trending warmer.
309 AM EDT Wed Apr 12 2023 A 579 dm 500mb ridge axis now extends from the central plans across the Ohio Valley. The Great Lakes region will remain along the northern periphery of this ridge today and within a respectable low level west-southwesterly gradient. In fact, wind gusts may reach up to 40 MPH across the Saginaw Valley and thumb region where the low level wind fields will be a touch stronger.
(Today) High pressure centered over the southeast US continues to keep the TN Valley dry with primarily easterly winds.
328 AM EDT Wed Apr 12 2023 High pressure will linger to our south and then move offshore late Thursday.
Over the Gulf coast a nearly stacked closed low will slowly meander up towards us, but in the short term its movement is negligible. Outside a tad bit warmer tomorrow under sunny skies, seems fair to expect relative humidities to dip once again in the afternoon to the mid-20s, low- 20s in some locations.
1023 PM MDT Tue Apr 11 2023 The latest analysis shows a broad upper ridge over the central CONUS with an upper trough over the Pacific Northwest. In general, the Pacific trough will approach the area Wednesday and Thursday as the upper ridge moves east.
West of the Divide, the deeper snowpack will help to keep temperatures a little cooler. With the temperatures and wind maximized today, as well as above freezing temperatures expected overnight, today and tonight will be the period to watch. The ridge will get further shunted east tonight as a Pacific trough approaches. Precipitation chances will increase on Wednesday as the trough pulls closer and lift aloft is enhanced, though models continue to slow the arrival of the associated cold front. Otherwise, Wednesday will be mostly dry and warm, though cooler than today across the north and west. There is still some disagreement on the exact placement of this low, with the Canadian and NAM showing it much farther south than the GFS/ECMWF.
with dry and warmer weather in store through the rest of work week. In the meantime, the latest deterministic and ensemble models are still indicating that as an upper level trough develops and deepens over the western CONUS, the Rex Block will begin to weaken on Thursday. Then as the upper level trough begins to lift out towards the forecast area, the closed low will weaken and lift out towards the Ohio Valley.
117 AM EDT Wed Apr 12 2023 High pressure will maintain fair weather through Thursday, with temperatures trending warmer.
1201 AM CDT Wed Apr 12 2023 (Tonight through Wednesday night) Deterministic runs are consistent with respect to the upper pattern, with a quasi-stationary/meandering upper closed low (500 mb) over southern LA during the period, resulting in persistent subsidence over the CWA/adjacent waters. 6ft MSL during the high tide cycle this afternoon, just below the 1.
855 PM PDT Tue Apr 11 2023 A trough moving in from the northwest will bring cooler weather and a deeper marine layer Wednesday and Thursday.
Most places will top out in the upper 70s, but the warmer urban areas may touch 80. Typical cool spots will likely see some low 40 readings, while your typically warm ridgetops and urban areas will be up around 50. Strong mid and upper level ridging begins to retreat eastward on Thursday as vertically stacked low pressure drifts northeast from the central Gulf Coast.
1242 AM CDT Wed Apr 12 2023 Upper level ridging remains overhead continuing the dry and mild pattern. This is due to the tight pressure gradient between the high pressure to the southeast and developing low off of the Rockies.
1221 AM CDT Wed Apr 12 2023 (Rest of tonight) High pressure remains over the area tonight.
Currently - A healthy ridge over the southeastern United States and nearby Atlantic and a developing low positioned in the southeastern Gulf of Mexico continue to support fresh to strong easterly breezes across the Keys this morning. Forecast - Over the next 24 hours the previously mentioned ridge will spill further east southeastward into the Atlantic, while the deepening low advances towards Mississippi. Through the back half of the work week the ridge will slowly consolidate off the southeast Atlantic coast and the gulf low will crash apart over Mississippi. High pressure over the southeastern United States and adjacent Atlantic will consolidate off the Atlantic coast over the next several days. Thereafter, winds will remain light and largely out of the south as the high remains well off to the east.
(Today and tonight) As an upper cyclone deepens over the Nrn Gulf today, an attendant sfc cyclone will develop with enhanced moisture transport on its Ern/Nrn periphery.
Cooler temperatures will also return with wintry precipitation becoming possible late in the period. High pressure was in control across the Northland this afternoon under mostly sunny skies. A warm front was analyzed across western North Dakota into northern South Dakota. A weak cold front will then stall out across central Minnesota Wednesday night into Thursday and bisect the region.
1104 PM MDT Tue Apr 11 2023 Upper level ridging continues to build across the Rockies and into the Central High Plains with increasing southwest flow aloft expected through the day Wednesday, ahead of a weather system moving across the Pacific Northwest Coast. -MW Increasing southwest flow aloft ahead of the Pacific upper trough translating across the Intermountain West on Thursday will push lee trough into western Kansas. Low level southerly flow ahead of the lee trough will increase low level moisture and bring the potential for a few showers and thunderstorms into northwest Kansas and southwest Nebraska Thursday afternoon, where CAPE of up to 800 j/kg are progged.
1235 AM CDT Wed Apr 12 2023 Closed upper level low spinning across S LA and the Northern Gulf Coast attm. Hourly temperatures are running just a degree or two warmer from this time last night and the hourly temperature forecast has a good handle on this so no additional changes were necessary with temperatures. The cu field should mostly diminish shortly after sunset, although AC/cirrus cigs will linger across the region through Thursday as a closed low begins to slowly lift NNE across SE LA into Srn MS.
436 AM EDT Wed Apr 12 2023 Dry weather and warmer temperatures are forecast today through Thursday as high pressure moves slowly east.
118 AM EDT Wed Apr 12 2023 High pressure ridges northward from the southeastern United States through the week.
211 AM EDT Wed Apr 12 2023 High pressure will modify as it moves across the region and then offshore late Thursday.
The warmer and dry boundary layer will mix deeply and allow for some occasional gusts to around 30kt to be transported to the sfc in gusts late this morning into this afternoon.
There will be somewhat of an increase in the gradient wind as the high gradually meanders off to the east later Wednesday night into Thursday.
1227 AM EDT Wed Apr 12 2023 Aviation --Dry, summerlike pattern; quite breezy Wednesday-- Thermal ridge aloft will be pushing in from the west tomorrow as west-southwest winds increase in tightening pressure gradient. Cloud cover will be limited due to subsidence under building upper ridge, and temps inland from Lk MI will make a run at 80 degrees. Wind gusts to 35 mph are likely in the afternoon as the low level jet comes across and deeper mixing takes place.
246 AM EDT Wed Apr 12 2023 (Through Wednesday) An upper low over western Louisiana will slowly drop southward over the Gulf of Mexico tonight and Wednesday. Jet rotating around the upper low will aid in cyclogenesis over the central Gulf on Wednesday, with broad low pressure developing south of the mouth of the Mississippi River. Temperatures are expected to be slightly warmer tomorrow, but somewhat tempered by increasing cloudiness from the south.
150 AM MDT Wed Apr 12 2023 Upper ridge is shifting eastward, and a trough is digging into the Pac NW, resulting in southwest flow over the northern plains. Highs could range from the lower 60s across NW SD to the mid 80s across south central SD. Upper trough will approach our region Thursday, and chances for precip will increase late Thurs. Rain showers will spread over the CWA, changing to snow overnight across the cooler areas of northeastern WY, northwestern SD, and the Black Hills.
A large upper ridge over the Great Lakes will produce sunny skies, low humidity and very warm temperatures. Southwest winds blowing off of Lake Michigan will result in significantly cooler conditions adjacent to the lake shore.
259 AM CDT Wed Apr 12 2023 Dry and unseasonably warm with stronger south winds today and Thursday with generally clear skies under ridging aloft. Attention then turns to the western conus upper trof which will move thru the interior West on Thursday.
Today will be a rinse and repeat of yesterday, with highs a few degrees warmer in the mid to upper 70s. Pattern will begin to shift tomorrow as a low pressure system to our south begins to move our direction bringing moisture back to the area.
403 AM EDT Wed Apr 12 2023 (Today through Thursday) Early this morning a closed upper level low will continue to develop over the TX/LA region under a broad upper level ridge. Tonight a surface cyclone will develop over the Gulf coast with enhanced moisture transport on its eastern and norther periphery. By morning cloud coverage followed by rain showers will increase from southwest to northeast as the upper level low, stacked surface cyclone with attendant warm front eject northward toward the coast line. Rain showers and thunderstorm will form ahead and along the warm front that will be progressing northward later in the day.
1236 AM CDT Wed Apr 12 2023 (This evening through Thursday) WV imagery shows an upper low over southern LA, and models have this system slowly meandering over southern LA and the northern Gulf Coast thru the remainder of the short term.
The rest of the CWA will experience increased winds, also, all of which result from the deepening of the lee-side trough as mid- level height falls reach the south-central plains - well ahead of an upper trough centered over the Pacific Northwest.
The strong ridge that brought record heat to the forecast area has moved to the east and in its place, a 500 hPa trough will move in from the northwest which sets up the next chance for precipitation from tonight.
1049 PM CDT Tue Apr 11 2023 (This evening through Wednesday) Mid-level heights will increase subtly this evening and into Wednesday as a mid-level trough continue to moves off towards the Gulf Coast. Overnight lows won't get much higher than the low 50s, and highs Wednesday should stay in the mid to upper 70s, potentially low 80s. There is a low chance for elevated fire concerns across northwestern Oklahoma where winds will be a little bit higher (20-25 mph) and RHs will be in the low 20s.
419 AM EDT Wed Apr 12 2023 High pressure will support dry weather across the Lower Lakes with above normal temperatures through the end of the week. Chances for showers and thunderstorms increase over the weekend as low pressure nears the region. High pressure to our south will once again provide dry weather areawide. little change is expected as high pressure will dominate the region. We might even see a few readings in the low 60s across the western Finger Lakes region.
511 AM MDT Wed Apr 12 2023 Upper ridge is shifting eastward, and a trough is digging into the Pac NW, resulting in southwest flow over the northern plains. Highs could range from the lower 60s across NW SD to the mid 80s across south central SD. Upper trough will approach our region Thursday, and chances for precip will increase late Thurs. Rain showers will spread over the CWA, changing to snow overnight across the cooler areas of northeastern WY, northwestern SD, and the Black Hills.
854 AM EDT Wed Apr 12 2023 High pressure will maintain fair weather through Thursday, with temperatures trending warmer.
The upper level trough axis will swing overhead today, with showers expected across much of the region through this evening.
631 AM EDT Wed Apr 12 2023 Persistent high pressure and upper level ridging maintain dry and generally SKC condiitons today and tonight. A 579 dm 500mb ridge axis now extends from the central plans across the Ohio Valley. The Great Lakes region will remain along the northern periphery of this ridge today and within a respectable low level west-southwesterly gradient. In fact, wind gusts may reach up to 40 MPH across the Saginaw Valley and thumb region where the low level wind fields will be a touch stronger.
Cool and showery conditions will persist through the rest of the work week as a trough of low pressure remains over the region. Forecast models still resoundingly agree that high pressure will begin to build back over the region this weekend.
This was in concert with a warm front advecting back northward through the CWA, providing ample forcing for large-scale ascent, with the strongest confluent flow focused in the vicinity of the Lower Keys. Winds continue to collapse, as the aforementioned warm front continues marching northward. Recent visible satellite trends highlight clearing south of the island chain pushing northwards, which should allow temperatures to warm into the lower to mid 80s by this afternoon. As a low currently developing in the northern Gulf of Mexico dissipates over the Mississippi Valley and high pressure over the Southeast slides into the west- central Atlantic, breezes will slacken further and veer southerly on Thursday.
(Today and tonight) Little is happening across the region this morning as a low pressure system begins to develop across southeast Texas and southern Louisiana. Otherwise, it looks like the slightly warmer temperatures are the only other thing worth a mention. We will be in the lower 80s this afternoon, which will bring our temperatures back to right around normal for this time of year.
An upper level trough moving into northwest Oregon will produce showers over coastal areas and the southwest interior this morning.
A 500mb trough continues to spin over the SE CONUS today but finally begins to move northeastward on Thursday. Temperatures will reach the lower 80s today and lows will be in the low 50s. Thursday will be a bit warmer than Wednesday with highs reaching the mid 80s with mostly sunny skies.
600 AM CDT Wed Apr 12 2023 (Today) High pressure centered over the southeast US continues to keep the TN Valley dry with primarily easterly winds.
934 AM EDT Wed Apr 12 2023 High pressure will linger to our south and then move offshore late Thursday.
Downslope winds along the Coteau will diminish this morning with the passage of a dry cold front. Temperatures will be cooler and closer to seasonable today as winds shift to the north behind the front. Once again, snow covered areas will fall below mid-April norms with highs in the lower 50s that will drop into the 40s on Thursday. However, a warm front will push north into central SD late tonight and as far north as the Hwy 12 corridor Thursday morning. The main concern this short term will remain the ongoing river flooding as the warmer temperatures cause snow and ice melt. Rocky mountain trough generating southwest flow aloft with one weak southwest flow wave already passing overhead to start the period.
619 AM CDT Wed Apr 12 2023 (Today and tonight) As an upper cyclone deepens over the Nrn Gulf today, an attendant sfc cyclone will develop with enhanced moisture transport on its Ern/Nrn periphery.
(Today through Thursday afternoon) We will start the day with a large closed low along the SE TX coast and the next upper trough along the West Coast. This trough will move inland today then into ID/NV tonight as the Gulf low spins in place. On Thursday the trough axis slowly moves east into UT/AZ as the Gulf low begins to drift east.
641 AM EDT Wed Apr 12 2023 Dry weather and warmer temperatures are forecast today through Thursday as high pressure moves slowly east.
341 AM PDT Wed Apr 12 2023 A low pressure system moving inland through the western states will bring stronger onshore flow through Thursday. High temperatures will be much cooler inland for today and Thursday with stronger and gusty west winds for the mountains and deserts for this afternoon into Thursday.
800 AM EDT Wed Apr 12 2023 High pressure will linger to our south and then move offshore late Thursday.
618 AM CDT Wed Apr 12 2023 (Today through Thursday afternoon) We will start the day with a large closed low along the SE TX coast and the next upper trough along the West Coast. This trough will move inland today then into ID/NV tonight as the Gulf low spins in place. On Thursday the trough axis slowly moves east into UT/AZ as the Gulf low begins to drift east.
The high end values that are over Graham county is above the 90th percentile for April. Water vapor imagery showed a weak mid-level trof just south of the border which will gradually lift northeast over the area, in a weakening state, out ahead of a stronger upper level trof. Cooler tomorrow with highs down to near mid-April normals.
The cold front continues to progress southeastward as it recently passed through Bismarck. A cold front continues to progress through northwestern and north central North Dakota this morning. More seasonable temperature are in store for today as a cooler airmass moves into the region. An upper level low over the Pacific Northwest has positioned a southwesterly jet over eastern Montana. Overnight lows are forecast to cool down into the lower 30s. A dynamic upper level low is forecast to move through the state through the end of the week. The upper low is forecast to move over Northern Rockies Thursday this will nudge a southwesterly jet over northeastern Montana. As the low continues to progress northeastward Thursday precipiation chances increase across the state.
651 AM EDT Wed Apr 12 2023 High pressure will support dry weather across the Lower Lakes with above normal temperatures through the end of the week. Chances for showers and thunderstorms increase over the weekend as low pressure nears the region. High pressure to our south will once again provide dry weather areawide. little change is expected as high pressure will dominate the region. We might even see a few readings in the low 60s across the western Finger Lakes region.
335 AM PDT Wed Apr 12 2023 Cooler temperatures today and Thursday as a weak system brushes by to the north. Upper low over Oregon swings east to Idaho tonight before pivoting northeast over Montana Thursday. Larger-scale trough will move through NorCal today and shift east into Nevada Thursday.
601 AM CDT Wed Apr 12 2023 (Today and tonight) Little is happening across the region this morning as a low pressure system begins to develop across southeast Texas and southern Louisiana. Otherwise, it looks like the slightly warmer temperatures are the only other thing worth a mention. We will be in the lower 80s this afternoon, which will bring our temperatures back to right around normal for this time of year.
404 AM CDT Wed Apr 12 2023 A cold front continues to progress through northwestern and north central North Dakota this morning. More seasonable temperature are in store for today as a cooler airmass moves into the region. An upper level low over the Pacific Northwest has positioned a southwesterly jet over eastern Montana. Overnight lows are forecast to cool down into the lower 30s. A dynamic upper level low is forecast to move through the state through the end of the week. The upper low is forecast to move over Northern Rockies Thursday this will nudge a southwesterly jet over northeastern Montana. As the low continues to progress northeastward Thursday precipiation chances increase across the state.
312 AM MDT Wed Apr 12 2023 Issued at 310 AM MDT Wed Apr12 2023 Warm and breezy conditions continue today and Thursday with southwest flow aloft ahead of an approaching trough. Cold front will be moving into northwest corner of the forecast area by 12z. Low temperatures will range from the lower 40s behind the front to the upper 50s well ahead of it.
939 AM EDT Wed Apr 12 2023 Dry weather and warmer temperatures are forecast today through Thursday as high pressure moves slowly east.