Aikyam-Lab/Synoptic-Bench huggingface dataset:
1042 PM CDT Tue Sep 20 2022 Pattern change in the works, beginning tonight as the upper level ridge begins to weaken. A strong area of low pressure over eastern Manitoba will slide east just north of the U. This system will drag a cold front across the region Wednesday through Wednesday evening. With the front just north of the I-70 corridor by 18z Wednesday, areas along and south of I-70 will still warm up well into the 90s for highs, while far northern portions of the forecast area will only warm up into the low 80s.
255 AM CDT Wed Sep 21 2022 Key Messages: - Cooler temperatures arrive today with scattered showers and thunderstorms possible through Wednesday night. As of 07Z, the cold front was just starting to move into northwestern MO. Temperatures will still warm into the 90s in our far southern zones by this afternoon, but for areas from about I-70 northward cooler temperatures are expected with a muted and earlier diurnal trend.
1236 AM CDT Wed Sep 21 2022 (This evening through Wednesday) A near carbon copy is expected the next 24 hours as a mid-upper level high continues to control our weather. The center of the high will edge westward, placing it even more directly overhead by Wednesday afternoon, though that will have very little affect with regards to our sensible weather.
432 AM EDT Wed Sep 21 2022 Hot weather will arrive just ahead of a cold front today.
355 AM EDT Wed Sep 21 2022 Showers and storms return today and tonight with the passage of a cold front.
415 AM EDT Wed Sep 21 2022 A ridge of high pressure will continue to bring dry and very warm weather to eastern Kentucky again today.
1255 AM EDT Wed Sep 21 2022 Showers and storms return today and tonight with the passage of a cold front.
1121 PM MDT Tue Sep 20 2022 Water vapor shows upper trof over southern Manitoba extending into the Northern Plains, weak upper ridge over the Northern Rockies, and upper low along the Northern CA coast.
854 AM EDT Wed Sep 21 2022 Hot weather will arrive just ahead of a cold front today.
The latest RAP40 500mb analysis is showing an amplified ridge in place over the central/southern Plains, allowing for southwest flow aloft. Clouds and moisture continue to wrap around the western edge of the ridge into the Rockies.
The region will continue to remain in the grasp of stout upper ridging centered across northeast Texas with a low-level thermal ridge extending into the Lower Mississippi Valley. /TW/ Today through tonight: Persistent mid-level high pressure will keep temperatures above average across the region today. Anomalous heights will contribute to a hot and dry airmass being locked over the ArkLaMiss region today, leading to temperatures in the middle to upper 90s, with some areas in the Delta reaching the lower 100s.
723 AM EDT Wed Sep 21 2022 Upper level ridging will remain in place across the region along with the warming trend continuing which will result in near record highs Thursday afternoon. A cold front will cross the region Thursday evening allowing a cooler and dry air mass to dominate the area through the weekend.
413 AM CDT Wed Sep 21 2022 Today through tonight: Persistent mid-level high pressure will keep temperatures above average across the region today. Anomalous heights will contribute to a hot and dry airmass being locked over the ArkLaMiss region today, leading to temperatures in the middle to upper 90s, with some areas in the Delta reaching the lower 100s.
556 AM CDT Wed Sep 21 2022 Today through tonight: Persistent mid-level high pressure will keep temperatures above average across the region today. Anomalous heights will contribute to a hot and dry airmass being locked over the ArkLaMiss region today, leading to temperatures in the middle to upper 90s, with some areas in the Delta reaching the lower 100s.
With steering flow generally north to northeast, a few cloud broken cloud streamers may try to form along portions of the Lower and Middle Keys this afternoon, but the streamers are not expected to morph into a mature cumulus cloud line.
Dry and warmer weather conditions are forecast for the latter half of the week into the weekend. One last day of showers and isolated thunderstorms are forecast in the interior today as a cold upper level low moves NE over the area. Thus, expect showers and storms to come to an end quickly as the upper low exits to the NE and large scale subsidence develops over the area.
612 AM CDT Wed Sep 21 2022 (Today and tonight) An upper level ridge will remain firmly in control of the weather for today. The center of the ridge will move slightly to the west over the next 24 hours ending up nearly overhead on Thursday morning.
This high moves overhead tonight, with mostly clear skies and light winds. This period begins Thursday night with an upper level low pressure system situated across portions of MT.
615 AM CDT Wed Sep 21 2022 (Now through Thursday) Mid-level ridging centered over the Lone State will provide subsidence across Deep South Texas through the period. At the surface, broad high pressure across the northwest Gulf of Mexico will maintain light to moderate east to northeast winds across the region today into Thursday.
526 AM MDT Wed Sep 21 2022 Current surface map places high pressure across the Northern Plains.
(Now through Thursday) Mid-level ridging centered over the Lone State will provide subsidence across Deep South Texas through the period. At the surface, broad high pressure across the northwest Gulf of Mexico will maintain light to moderate east to northeast winds across the region today into Thursday.
601 AM CDT Wed Sep 21 2022 (Today through Thursday) The ridge holds strong today with temperatures expected to trend a couple degrees warmer resulting in one of the hottest days this week. On Thursday, the ridge will nudge slightly towards the west as troughing dives southeast across the Northeast and Mid-Atlantic states. A diffuse east to west oriented cold front will move south across Central AL during the day accompanied by a slight increase in mid-level moisture. This weakness in the ridge may result in small rain chances as the cold front spurs a few isolated showers, especially in our southeast where Slight Chance PoPs have been added.
This feature is forecast to develop tomorrow night, and while not forecast to be quite as strong, will still keep the boundary layer sufficiently mixed for mins above normal, but maybe a degree or two cooler than this morning. Otherwise, WV imagery shows the ridge has begun retrograding to the west, and is forecast to center over central Texas by 00Z Thursday. The ridge will inch a little farther west Thursday, but weaken just a bit, resulting in highs similar to today's.
A cold front moves across northern Nevada, bringing some showers, thunderstorms, and gusty southerly winds across eastern Nevada. Drier and warmer condition look to follow this weekend with the return of high pressure.
649 AM EDT Wed Sep 21 2022 A cold front moving from the northwest will bring the threat for strong thunderstorms today.
637 AM CDT Wed Sep 21 2022 (Today and tonight) Upper level high will shift almost directly over West Central Texas this afternoon.
337 AM PDT Wed Sep 21 2022 Cooler conditions and periods of gusty west winds in the mountains and deserts will continue through today.
High resolution models continue to suggest a surge of easterly winds will impact west-central Montana from 5 pm to 11 pm MDT tonight as a warm front approaches. A closed upper level low remains on track to bring widespread rainfall Wednesday night into Thursday. Widespread rain will develop overnight Wednesday into Thursday morning as the closed low tracks across north-central Idaho into Glacier Park. The closed low will exit the region Thursday night.
Warm and dry conditions continue on Thursday and with afternoon dewpoints mixing out into the lower 50s to mid 60s, afternoon highs will nudge upward, with lower 90s to near 100 degrees expected.
There is a 25% to 30% chance for temperatures to fall to near freezing. Breezy northwest winds prevail through much of the day along with cooler high temperatures in the 50s and 60s. For tonight, dew points are expected to fall into the lower to middle 30s along with decreasing cloud cover and wind.
1019 AM EDT Wed Sep 21 2022 High pressure will move off to the southeast today.
As the high moves into the area, clouds will clear out in the next few hours with dry conditions. This high moves overhead tonight, with mostly clear skies and light winds. This period begins Thursday night with an upper level low pressure system situated across portions of MT.
Gusty south winds will occur again across the region today as a low pressure system lifts from from northern California across northern Nevada. Dry weather with a warming trend can be expected into the weekend as a ridge of high pressure builds. Isolated showers or thunderstorms will be possible near the lower Colorado River Valley around Lake Havasu and also eastern Lincoln County near the Utah border. The rest of the region will remain dry and breezy with gusty south winds 25-35 mph associated with a low pressure system lifting from northern California across northern Nevada. The moisture will be pushed to the east tonight and Thursday by dry south to west resulting from the upper low making its way across northern Utah and the Northern Intermountain Region.
530 AM EDT Wed Sep 21 2022 A ridge of high pressure will continue to bring dry and very warm weather to eastern Kentucky again today. This pattern will finally begin to change tonight and Thursday, however, as a cold front moves in from the north. A dry and much cooler air mass will be ushered in behind the front on Thursday, and we will likely see temperatures begin falling across the area by the late afternoon/early evening time frame. The cooler air will be quite evident on Thursday, as highs are forecast to only make it into the 70s around the area, with lower 70s on tap north of the Mountain Parkway, and in the mid to upper 70s south of there.
Gusty south winds will occur again across the region today as a low pressure system lifts from northern California across northern Nevada. Dry weather with a warming trend can be expected into the weekend as a ridge of high pressure builds. Isolated showers or thunderstorms will be possible near the lower Colorado River Valley around Lake Havasu and also eastern Lincoln County near the Utah border. The rest of the region will remain dry and breezy with gusty south winds 25-35 mph associated with a low pressure system lifting from northern California across northern Nevada. The moisture will be pushed to the east tonight and Thursday by dry south to west resulting from the upper low making its way across northern Utah and the Northern Intermountain Region.
638 AM EDT Wed Sep 21 2022 Hot weather will arrive just ahead of a cold front today.
It will be sunny and hot today with highs in the upper 80s and lower 90s in the lower elevations. Otherwise, upper and surface ridging will keep weather quiet with anomaly warm thickness/850mb temperatures producing highs in the upper 80s to lower 90s over much of the area. For tonight, ridging will remain in control until around daybreak.
748 AM EDT Wed Sep 21 2022 High pressure will move off to the southeast today.
344 AM MDT Wed Sep 21 2022 High pressure sliding across eastern Montana today with a cold start this morning.
(Today through Thursday) Weakening high pressure ridge axis along the Appalachian will result in mostly dry conditions for the short term. The developing cold front moves south out of the Great lakes states today and moves into N GA Thu afternoon. High temperatures Today and Tomorrow will be in the lower to mid 90s, which is about 7-12 degrees above average.
Current surface map places high pressure across the Northern Plains.
519 AM EDT Wed Sep 21 2022 Showers and storms return today and tonight with the passage of a cold front. Much cooler air moves in on Thursday.
630 AM PDT Wed Sep 21 2022 Cooler conditions and periods of gusty west winds in the mountains and deserts will continue through today.
1024 AM EDT Wed Sep 21 2022 A cold front moving from the northwest will bring the threat for strong thunderstorms today.
637 AM CDT Wed Sep 21 2022 KEY MESSAGES: - Considerably cooler air settles in beginning today.
625 AM CDT Wed Sep 21 2022 Key Messages: - Cooler temperatures arrive today with scattered showers and thunderstorms possible through Wednesday night. As of 07Z, the cold front was just starting to move into northwestern MO. Temperatures will still warm into the 90s in our far southern zones by this afternoon, but for areas from about I-70 northward cooler temperatures are expected with a muted and earlier diurnal trend.
An anticyclone was sitting over north central TX at 5h and over AR at 8h. Surface ridging was spanning the Gulf States into the mid Atlantic region. The highest points of Lookout Mtn and near Sewanee may stay just below 90 this afternoon.
556 AM CDT Wed Sep 21 2022 (Today) Another day of record and near-record heat is in store today underneath strong high pressure aloft.
Thus, expect afternoon highs to be notably cooler than yesterday, as temperatures only rise into the mid to upper 60s - a welcomed reprieve for most! Otherwise, look for breezy conditions to quickly subside after sunset and cloud cover to briefly wane. Lows during this time will feel quite crisp, as another shot of CAA sends temperatures into the low to mid 40s. May even see a few locations along the Buffalo Ridge fall into the upper 30s, though this will largely depend on how quickly cloud cover builds back across the area. Heading into Thursday evening, guidance continues to show a fairly pronounced upper level trough edge closer to the region, causing rain chances to once again return to the forecast.
639 AM CDT Wed Sep 21 2022 (Today and tonight) Temperatures will peak this afternoon in the upper 90s and lower triple digits as an upper level high continues to sit over central Texas.
558 AM CDT Wed Sep 21 2022 Hot, humid air will be replaced by cool, drier air over the next 24 hours thanks to a cold front diving southeast across central IL today and tonight. Currently, IL is in the warm sector of a low pressure system with the low centered over the IA/WI border. These lows are associated with a large upper trough that is currently centered over Manitoba. Showers and thunderstorms will be possible with the surface front and also behind the front in the vicinity of the low level boundary.
(This evening through Thursday night) Showers and thunderstorms are expected to develop along a slow- moving cold front across the Oklahoma Panhandle and the northern Texas Panhandle this afternoon into this evening. The cold front will continue to move slowly south this evening and should be south of the Texas Panhandle late tonight.
(This evening through Thursday) A dome of high pressure aloft continues to result in warm and relatively humid conditions across the forecast area. That front is expected to stall as it loses impetus as the main upper trough driving it southward is well to the northeast and as the front undercuts the strong upper level ridge.
Upper ridging will return over the region as the upper low lifts into Canada by the end of the week into the weekend.
(This evening through Thursday night) Not a lot of change in thinking for the short term forecast as we remain in a high pressure and ridging pattern through the period. We reached the low to mid 90s in the majority of the CWA today.
(Tonight through Thursday night) Hot afternoon temperatures, which will challenge daily record highs, will be the primary weather story through the short term period as mid to upper level ridging remains settled across the state. With the lower dew points into this evening and a primarily clear sky expected overnight, expect for overnight lows to trend a little cooler, especially across the Hill Country and the colder valley locations. Sunshine will reign again on Thursday with highs perhaps a degree or two warmer than this afternoon. The Hill Country and colder valley locations trend cooler again on Thursday night than the surrounding areas with modest radiational cooling under mostly clear skies.
Northeasterly flow freshens between high pressure over the southern US and Hurricane Fiona, moving north well to the east of the local Atlantic waters.
KEY MESSAGES: - Considerably cooler air settles in beginning today.
Current satellite imagery shows clear skies across the forecast area as the high pressure strengthens over the Appalachians and the ArkLaTex region. (Today through Thursday) Weakening high pressure ridge axis along the Appalachian will result in mostly dry conditions for the short term. The developing cold front moves south out of the Great lakes states today and moves into N GA Thu afternoon. High temperatures Today and Tomorrow will be in the lower to mid 90s, which is about 7-12 degrees above average.
1225 PM CDT Wed Sep 21 2022 (Now through Thursday) Mid-level ridging centered over the Lone State will provide subsidence across Deep South Texas through the period. At the surface, broad high pressure across the northwest Gulf of Mexico will maintain light to moderate east to northeast winds across the region today into Thursday.
232 PM CDT Wed Sep 21 2022 The wind shift associated with a cold front has moved almost completely through the area this afternoon. These showers and storms should last through the evening, the rest of the period will be controlled by high pressure moving into the area from Canada. Discussion: High pressure moves into the area through the period as cooler and drier air is expected across the area. Main forecast concern are the lows and highs tomorrow, clouds tonight should keep the area cooler than the last few days.
Florida remains under the influence of weak ridging with an upper- level ridge to the west and Hurricane Fiona passing off to the East of the Bahamas.
At 18z a cold front was moving south though the area, and had reached a line from near Elkhart and northeastward roughly following the Ark river valley. HRRR model has been consistent all day in developing strong, but largely sub severe thunderstorms outflow along the highway 54 corridor late this afternoon into the very early evening as the cold front overtakes the convective development and/or the storms propagate farther south into Oklahoma. Thursday brings pleasantly cooler temperatures with highs only reaching the 60s in most areas, while a large range between 50s at Hays to 70s at Elkhart is more probabilistic. All global models EC/GFS and Canadian flatten out the large southern Plains subtropical high pressure by the end of the week with northwest flow aloft redeveloping.
See potential to mix higher than expected if we get a bit more sunshine and upper ridging starts to build in, so did increase highs (toward a CONSRaw/NBM 50th blend) to the 60s across most of the region.
Much cooler tomorrow. A big change is in store for the first day of autumn with high temperatures about 20 degrees cooler than today. A cold front moving out of the Plains/Upper Midwest will cross our area this evening with the possibility of thunderstorms. In the wake of the cold front, temperatures will return to near normal for the first day of fall.
1230 PM CDT Wed Sep 21 2022 (Today and tonight) An upper level ridge will remain firmly in control of the weather for today. The center of the ridge will move slightly to the west over the next 24 hours ending up nearly overhead on Thursday morning.
Upper level ridge axis will shift slightly west for Thursday and keep highs about the same as today.
1242 PM CDT Wed Sep 21 2022 The region will continue to remain in the grasp of stout upper ridging centered across northeast Texas with a low-level thermal ridge extending into the Lower Mississippi Valley. /TW/ Today through tonight: Persistent mid-level high pressure will keep temperatures above average across the region today. Anomalous heights will contribute to a hot and dry airmass being locked over the ArkLaMiss region today, leading to temperatures in the middle to upper 90s, with some areas in the Delta reaching the lower 100s.
A cold front will drop through the area after 3 am in the northwest and clearing the southern counties by late morning on Thursday.
125 PM EDT Wed Sep 21 2022 Hot weather will arrive just ahead of a cold front today.
540dm upper low is currently located over James Bay. Upper air pattern consists of a 500 mb closed low in the Pacific NW, a ridge over the southern plains and a trough over the lower Great Lakes 12z Thu. Troughing moves into the northern plains 12z Fri and into the upper Great Lakes Fri night lasting into Sat. In the extended, the GFS and ECMWF show a 500 mb ridge over the western U. and a broad trough over the eastern U. Upper level pattern changes little on Mon and Tue except amplifies the trough over the ern U. A big difference shows up on Wed with the Canadian and ECMWF showing a amplified 500 mb trough still remaining over the ern U. while the GFS is more progressive and has the trough in the Canadian Maritimes.
With the upper level ridge still in the area through tomorrow, a persistence forecast is in order.
Issued by National Weather Service Lubbock TX 1237 PM CDT Wed Sep 21 2022 (Today and tonight) Temperatures will peak this afternoon in the upper 90s and lower triple digits as an upper level high continues to sit over central Texas.
Here, ahead of the weak cold front expected Thursday night, the region could see some weak compressional heating. Tomorrow night is when temperatures will begin to reflect some sort of FROPA, with lows in our northern zones dropping into the low-60s, with low-70s elsewhere.
(This evening through Thursday Night) A mid to upper level ridge will remain centered over Texas through the short term, leading to mostly clear skies and warm temperatures. With clear skies tonight and tomorrow night, temps will cool down efficiently with lows reaching the low 70s outside of the Houston- metro area and mid to upper 70s across Houston and along the coast.
A closed low moving through Oregon today will kick off showers and thunderstorms across the region.
1043 AM CDT Wed Sep 21 2022 Temperatures are running about a degree or two warmer than 24 hours ago.
An upper low over Hudson Bay Canada and upper trough will deepen southward into the Great Lakes and Midwest tonight. The GFS, NAM and ECMWF continue to depict an upper low and trough moving across the Northern Great Basin tonight, and into the Northern and Central Plains Thursday into Thursday night. However, the upper trough moving into the region Thursday and Thursday night will provide additional lift. The upper trough passage will bring likely POPS to eastern area after midnight Thursday night. The highest amounts around an inch across far southwest counties. Highs only in the lower to mid 50s west on Thursday.
Isolated showers/storms are also possible tomorrow afternoon north of I-10 ahead of an incoming cold front. Otherwise, it will be very hot the next couple of days as the the upper level ridge will persist over the south-central CONUS and into the southeastern states. By Thursday afternoon, model PWATs over the northern portion of our local area ahead of the cold front look to increase to around 1. Lows tonight will be warm, as temperatures are expected to merely drop into the lower to mid 70s.
(The rest of today ) Approaching cold front viewable on visible satellite image this morning across central KS in the form of some patchy lower clouds. Latest CAMs showing a weak signal for some showers ahead and along the front late this afternoon into early evening but prospects of any meaningful activity remains too low to mention given subsidence associated with intense mid level ridge.