Aikyam-Lab/Synoptic-Bench huggingface dataset:
High temperatures are expected to be in the low to mid 70s. Low temperatures are expected to be in the low to mid 40s. 850mb temperatures warm a few degrees across the western CWA where some short wave ridging moves in ahead of a larger upper level low centered north of Montana. High temperatures are expected to be in the low to upper 70s. By Thursday/3rd an upper low develops across parts of Kansas across with an upper level ridge across parts of the southwest CONUS.
1130 PM EDT Wed May 26 2021 Scattered showers and storms will push east of the commonwealth overnight, as a cold front will crosses the region.
Temps will be a few degrees warmer everywhere tomorrow as thermal ridge axis centered over the Pecos River with 90s favored for most locales, and triple- digits along the river valleys. A cold front will slip into the southern plains with an emergence over the NE forecast area by Friday afternoon. Temps will scale back areawide, but in a big way for much of the Permian Basin as NE flow will usher in some "cooler" air to filter out the 90s back to the 80s for the area post front.
337 AM CDT Thu May 27 2021 An upper level short wave trough moving east across the northern High Plains will help to shove a cold front through the Panhandles today. This cold front should be near a Canadian to Amarillo line by mid afternoon. The Panhandles will be well behind the cold front on Friday.
1027 PM CDT Wed May 26 2021 Summary: Much cooler temperatures are on tap for the next several days with the possibility of frost. A secondary cold front pushed through this morning allowing for cooler temperatures to move into the region with highs in the mid 50s over the Arrowhead to the lower 60s further south and into northwest Wisconsin. Behind the cold front is cooler air that will stick around through much of the week. Overnight lows for Thursday look to be in the low 30s which has lead to a Frost Advisory over our far northern counties tonight, and potentially over a large area Thursday night with Freeze Warnings possible. With the cooler air in place some models are hinting at snow for our far southern zones by Thursday afternoon as low pressure propagates to the south of the Northland.
Going into Friday and Friday afternoon, this low will drag a cold front into the region, bringing showers and storms that will last through the remainder of the short term and into the extended. Temperatures Friday will start off mild in the low to mid 60s. There is still a bit of uncertainty around the highs for Friday. Currently, highs Friday are forecast to range from the upper 70s in the northwest to the low 80s in the southeast. A cold front will be exiting southeast out of the forecast area at the start of the period, and showers or thunderstorms will probably be in progress in association with it, especially in extreme eastern and southeastern KY. Much drier air will arrive in all but the lowest levels during Friday night, putting an end to most precip.
A cooler airmass settles in across the region today along with a shift to northerly winds at the sfc. Expect breezy winds again today thanks to a tight sfc pressure gradient as high pressure pushes its way south across the region.
Today Through Friday Night Warm and humid conds were noted acrs the FA this mrng, with predawn temps ranging from the mid 60s to the lower 70s. Rain chances dcrs fm the NW later Fri and Fri night as much cooler and drier air advects into AR.
High pressure remains in control of our weather today, however, it is not as strong or organized as it once was, so the pressure gradient has relaxed and breezes are now gentle to moderate across the coastal waters. From synopsis, High pressure centered near Bermuda reaches west-southwest across Central Florida. Breezes will diminish somewhat today through Friday as the high recedes to the east into the western North Atlantic.
/issued 331 AM CDT Thu May 27 2021/ SHORT TERM (Now through Friday): A 500 mb ridge will continue to build over Deep South Texas through the short term.
5 inches with a line of storms expected along and ahead of a cold front.
314 AM MDT Thu May 27 2021 Lingering showers and cloud cover will exit to the southeast this morning as upper ridging builds over the region for today. Warmer temperatures will arrive on Friday ahead of the next system, with a chance for showers and isolated thunder during the afternoon and evening hours. Ensembles point to a strong upper ridge pattern developing over the western U. Timing and placement will have low predictability at longer time scales, but confidence is increasing that the weekend and week ahead will be trending toward the warmer side. Patchy fog is also possible on the backside of the departing low pressure system.
928 AM EDT Thu May 27 2021 Dry weather is expected today under building high pressure. Rain returns Friday and Friday night with crossing low pressure. The morning fog across the area has lifted and mainly clear skies is present under high pressure. The lack of cloud cover but still a slightly cooler air mass in place will allow for some near average highs today but cooler than normal further north. The warm front will begin to move into the area by about 09Z with showers developing likely before 12Z. The high should maintain dry weather through this evening as it moves east. The low is expected to pull a warm front N across OH into Wrn PA Friday.
519 AM EDT Thu May 27 2021 Dry weather is expected today under building high pressure. Rain returns Friday and Friday night with crossing low pressure. Also adjusted POPs as the last of the showers along the cold front were exiting Tucker county WV. Otherwise, building high pressure across the Upper Ohio Valley and Great Lakes region should result in dry weather today. The high should maintain dry weather through this evening as it moves east. The low is expected to pull a warm front N across OH into Wrn PA Friday.
High pressure will build into the area today before the next dry cold front crosses northern Utah on Friday.
An area of low pressure is currently over the western part of the Dakotas with an attendant cold front extending southward into Colorado. High temperatures are expected to be cooler today with highs ranging from the low 70s in the northwestern part of the CWA to the mid-70s in the southeastern part of the Tri-State area. Friday, the low pushed into Minnesota. The Tri-State area comes under northwest flow aloft with a ridge moving across the Central and High Plains region.
1039 AM EDT Thu May 27 2021 Cooler and drier conditions are expected today following the passage of a front. Widespread rain and much cooler weather is expected for Friday as a low pressure system passes to the south.
927 AM EDT Thu May 27 2021 A weak cold front could spark a few showers and thunderstorms in northwest North Carolina this afternoon. By Friday evening, a more potent cold front will provide widespread showers and thunderstorms. Cooler and damp conditions are expected for this weekend. A weak cold front will drift southward across the Mid Atlantic today. However, it is not really going to provide a cooler air mass but rather drier air as noted with lower dewpoints in the model soundings for later this afternoon. For tonight, the front is expected to stall over NC, then return north as a warm front.
328 AM MDT Thu May 27 2021 Today and tonight, a 500 mb ridge axis will be along the CO/UT border with a drier northwesterly flow aloft over the forecast area. The fire danger will be elevated over the high mountains valleys of Grand, Jackson and Summit counties this afternoon, where rh values will drop below 15 percent. Upper ridging with weak flow aloft starts out on Friday for the forecast area. Moisture is lacking and this is mid level stability with warming aloft from the ridging. Pops are limited to the high county, and then pretty low chances.
346 AM PDT Thu May 27 2021 The marine layer will continue to deepen into this morning with coastal low clouds spreading inland across much of the valleys and with the coast and valleys a little cooler today.
443 AM CDT Thu May 27 2021 Summary: A large system brushes the southern portion of the forecast area today followed by widespread freezing conditions tonight. With such a cold day in store, it won't take much for temperatures to drop below freezing tonight as high pressure builds. There is some chance that a few lingering clouds will be around, but overall feel quite confident that the area will see widespread freezing temperatures. There will be a sharp cutoff with the precipitation gradient on the northern edge of the low pressure that passes today with only a sliver of QPF ending up in our forecast area.
Bumped temperatures this afternoon up around a degree with expected readings in the low to mid 90s.
The low level dry air will cause evaporative cooling once the rain begins later today, and keep surface temperatures 20 to 30 degrees below normal where it is raining.
Low pressure moving into the Pacific Northwest today will push cooler air into northern California.
A cold front will be exiting southeast out of the forecast area at the start of the period, and showers or thunderstorms will probably be in progress in association with it, especially in extreme eastern and southeastern KY. Much drier air will arrive in all but the lowest levels during Friday night, putting an end to most precip.
529 AM MDT Thu May 27 2021 The mid-level trough which brushed the northern portion of the forecast area area overnight will be supplanted by a ridge of high pressure building ahead of the next trough approaching the Pacific Northwest. Later, daytime warming will result in cumulus over the higher terrain during the afternoon. Expect less wind under the ridge with highs today peaking at, or above seasonal norms. The ridge axis is driven east of the Divide late tonight as the Pacific Northwest trough pushes farther inland, crossing over the northern Rockies during the afternoon.
322 AM MDT Thu May 27 2021 The mid-level trough which brushed the northern portion of the forecast area area overnight will be supplanted by a ridge of high pressure building ahead of the next trough approaching the Pacific Northwest. Later, daytime warming will result in cumulus over the higher terrain during the afternoon. Expect less wind under the ridge with highs today peaking at, or above seasonal norms. The ridge axis is driven east of the Divide late tonight as the Pacific Northwest trough pushes farther inland, crossing over the northern Rockies during the afternoon.
With ongoing clouds across much of the area outside of the NW MN, where temps have fallen below freezing at a few locations, these clouds will limit daytime temps as the weak short wave slides across the area today. As the system pulls away and skies clear from north to south this evening dry airmass in place along with light winds with high pressure axis sliding across the area will allow radiational cooling to be efficient with temps falling at least into the low 30s for most areas. Current thinking is that a Fargo to Fergus Falls to Alexandria line may not fall quite into freeze range with lingering clouds and any areas that see rainfall today trending a bit warmer than the 32 degree criteria.
646 AM EDT Thu May 27 2021 A cold front bisecting Pennsylvania from Northeast to Southwest early today will drift southeast across the remainder of the state by late this morning.
349 AM MDT Thu May 27 2021 Latest WV imagery this morning has building region of high pressure into the forecast area as a dry stationary front lies along a line from Limon, CO northwest into MT. Fairly quiet weather in store today under high pressure as low cloud deck continues across much of the NE Panhandle this morning. Highs today from the low 60s to low 70s for many. Lows tonight from the middle 30s into the low 40s. Upper level low and adjoining cold front will begin to move across the region late Friday with stationary front ahead of the system. An unsettled weekend expected across southeast Wyoming and Nebraska Panhandle as an upper low tracks across southern Alberta Canada. dragging a cold front through Wyoming.
532 AM MDT Thu May 27 2021 As an upper-level ridge builds into the region. This ridge will also keep dry and tranquil weather around through the day tomorrow before the ridge begins to break down early Friday morning. A digging trough will dive into the region bringing a cold front with it.
A mid to upper-level ridge will remain in control Thursday, promoting warmer and drier conditions across South Texas. Models are continuing to show the ridge eroding Friday as a weak upper level trough moves across Northern Texas. 5 inches, a strong enough cap should be in place which would inhibit precipitation development as the trough moves across the state. With ridging aloft, temperatures are expected to range within the upper 80s near the coast to near 100 degrees across the Rio Grande Plains today and tomorrow. With the warmer temperatures out west, heat indices can briefly climb to near 106 degrees in the afternoon today and tomorrow across the Brush Country and Rio Grande.
Best chances will be in the Pine Belt near the trough axis which passed overhead yesterday, and where southerly flow off the Gulf could enhance convergence.
420 AM CDT Thu May 27 2021 High pressure at the surface along the north central Gulf Coast. Temperatures generally ranging from mid 60s in the normally cooler locations, to the mid 70s in areas with marine influences.
Thunderstorm chances increase Fri evening through Sat ahead of an approaching cold front slowly dropping down from the NW.
641 AM CDT Thu May 27 2021 Summary: A large system brushes the southern portion of the forecast area today followed by widespread freezing conditions tonight. With such a cold day in store, it won't take much for temperatures to drop below freezing tonight as high pressure builds. There is some chance that a few lingering clouds will be around, but overall feel quite confident that the area will see widespread freezing temperatures. There will be a sharp cutoff with the precipitation gradient on the northern edge of the low pressure that passes today with only a sliver of QPF ending up in our forecast area.
501 AM EDT Thu May 27 2021 Cooler and drier conditions expected Thursday following the passing of a front. Widespread rain and much colder for Friday as a low pressure system passes to the south. Cooler air begins to fill in this morning behind the passing of a cold front. Drier conditons and mostly to partly sunny skies are also expected today with the presence of high pressure. A low pressure system over the Ohio River Valley begins to make its way east brining increasing cloud cover tonight. During the early Friday morning hours, a chance of showers is introduced for western parts of the Southern Tier and Finger Lakes regions as an area of widespread rain associated with the low pressure system begins to enter the region.
958 AM CDT Thu May 27 2021 Summary: A large system brushes the southern portion of the forecast area today followed by widespread freezing conditions tonight. With such a cold day in store, it won't take much for temperatures to drop below freezing tonight as high pressure builds. There is some chance that a few lingering clouds will be around, but overall feel quite confident that the area will see widespread freezing temperatures. There will be a sharp cutoff with the precipitation gradient on the northern edge of the low pressure that passes today with only a sliver of QPF ending up in our forecast area.
/Issued 337 AM CDT Thu May 27 2021/ An upper level short wave trough moving east across the northern High Plains will help to shove a cold front through the Panhandles today. This cold front should be near a Canadian to Amarillo line by mid afternoon. The Panhandles will be well behind the cold front on Friday.
4 inches along the SE Georgia coast with slightly cooler mid level temperatures. The area is situated under a weak pressure pattern, sandwiched between high pressure to our east over the Atlantic waters, another ridge to our west over the northeastern Gulf waters, with a positively tilted upper level trough axis laid out over the Florida Peninsula. With mainly high pressure dominating the local weather pattern, the heat will continue, but moisture has already begun to return to the region.
Other than a few thin high clouds entering northwest California ahead of the next trough, skies are clear across interior NorCal early this morning. Trough will pass to the north across the PacNW today, and only minor cooling and a few clouds are expected across interior NorCal.
738 AM EDT Thu May 27 2021 Dry weather is expected today under building high pressure. Rain returns Friday and Friday night with crossing low pressure. Also adjusted POPs as the last of the showers along the cold front were exiting Tucker county WV. Otherwise, building high pressure across the Upper Ohio Valley and Great Lakes region should result in dry weather today. The high should maintain dry weather through this evening as it moves east. The low is expected to pull a warm front N across OH into Wrn PA Friday.
Going into Friday and Friday afternoon, this low will drag a cold front into the region, bringing showers and storms that will last through the remainder of the short term and into the extended. Temperatures Friday will start off mild in the low to mid 60s. There is still a bit of uncertainty around the highs for Friday. Currently, highs Friday are forecast to range from the upper 70s in the northwest to the low 80s in the southeast.
507 AM MDT Thu May 27 2021 Latest WV imagery this morning has building region of high pressure into the forecast area as a dry stationary front lies along a line from Limon, CO northwest into MT. Fairly quiet weather in store today under high pressure as low cloud deck continues across much of the NE Panhandle this morning. Highs today from the low 60s to low 70s for many. Lows tonight from the middle 30s into the low 40s. Upper level low and adjoining cold front will begin to move across the region late Friday with stationary front ahead of the system. An unsettled weekend expected across southeast Wyoming and Nebraska Panhandle as an upper low tracks across southern Alberta Canada. dragging a cold front through Wyoming.
East of this approaching trough axis, sheaths of cirrus are moving into the Yucatan, western Cuba, the Florida Keys, and South Florida. At the surface, high pressure centered near Bermuda reaches west across Central Florida.
826 AM EDT Thu May 27 2021 Mainly dry conditions to continue today while upper trough in the E Gulf moves overhead as seen in water vapor imagery this morning. Deep layered ridging of late will weaken and shift east through Friday as a short wave trough moving across the southeastern states impinges upon it. On Friday a continued slow increase in moisture combined with less suppression from the aforementioned ridge may lead to some much needed isolated showers or storms (Pops 20 percent) developing along the inland moving sea breeze boundaries over inland locations during the afternoon, otherwise dry and hot conditions will continue elsewhere with light winds again becoming onshore along the coast with the sea breeze during the afternoon.
The 8h reflection of this trough was a weak low over northwest AL, lagging behind the upper trough. The focus will then shift to a cold front approaching from the northwest. An upper level trough swings into the area Friday afternoon from the west with some decent height falls for late May. A 70-90 kt 300mb jet will extend from the Lower Mississippi River Valley into the Great Lakes putting the forecast area in the favored right entrance region for divergence aloft. The low-level jet will respond to this divergence aloft and will increase into the 30-35 kt range increasing low-level moisture advection to the region. Additionally, with the high PW atmosphere, these storms will be able to produce intense rainfall.
Warmer today and Friday with upper 70s to low 80s in most valley locations.
Partly cloudy, warm, and dry is expected today but our next cold front is just off the west coast currently. By afternoon, breezy southerly winds will develop, then the cold front is expected to pass before midnight through western Montana. There could be enough warming during the afternoon for a few thunderstorms to develop along the cold front. Mainly mountain showers remain on Friday, but leftover clouds will keep it slightly cooler. A cold front moves through our area this evening bringing showers and an isolated thunderstorm along the boundary.
657 AM EDT Thu May 27 2021 Cooler and drier conditions expected Thursday following the passing of a front. Widespread rain and much colder for Friday as a low pressure system passes to the south. Cooler air begins to fill in this morning behind the passing of a cold front. Drier conditons and mostly to partly sunny skies are also expected today with the presence of high pressure. A low pressure system over the Ohio River Valley begins to make its way east brining increasing cloud cover tonight. During the early Friday morning hours, a chance of showers is introduced for western parts of the Southern Tier and Finger Lakes regions as an area of widespread rain associated with the low pressure system begins to enter the region.
At late morning skies were mostly sunny to partly cloudy across the forecast area with temperatures reaching the mid to upper 70s and dew points in the lower to mid 60s.
As the low pressure system over the Central Plains continues to track east tonight, high pressure will push southward into the FA. Cloud cover has already thinned along and north of the highway 2 corridor, with light winds.
This front will make its way over the lower Mississippi and Tennessee valleys Friday afternoon, but in terms of our local area be still off to our northwest by the end of the near term period. By Friday morning, rain and storm chances will begin to increase from the northwest as the aforementioned cold front advances towards the region. Temperatures across the local area this afternoon are in the upper 80s to lower 90s inland and in the lower 80s at the coast. Low temperatures late tonight into early Friday morning will also be warm, in the upper 60s inland and in the lower 70s at the coast. Rain and storm chances will then increase from the northwest through the day on Friday with the approach of a cold front.
SHORT TERM (Tonight through Friday Night): The 500 mb ridging will prevail over the RGV throughout the short term, but will be squashed down somewhat by a series of weak short waves moving over the top of the ridge axis on Fri. With the ridge axis holding on stubbornly and most of the significant moisture return remaining limited to central and northern TX on Fri ahead of a cold front edging into northern TX, do not expect any serious rainfall chcs throughout the short term period. Tidal runup closer to the high tide tomorrow morning may need a Coastal Flood Statement, but will allow the evening and overnight shift to make that decision.
Surface warm front is in place from just east of DSM trailing to the SE towards MQB. This warm front has not moved much through the day. This wave was originally thought to mechanically force the warm front north today. This warm front and unstable environment will drive the risk this afternoon. There are two potential areas for initiation, the convergence along the warm front, and the convergence along the cold front to the west. The cold front would be a later show, the warm front would be earlier. The earlier show would mean storms that are short lived severe as they cross the warm front into cooler environment. An upper low diving down across the region and attendant PVA and colder air aloft will foster showers late tonight and Friday.
Should see more development as we continue through the afternoon, but expect coverage to remain scattered at most and diminish this evening with the loss of daytime heating as the trough flattens and moves further to our east. A trailing cold front will enter northwest AL during the mid to late afternoon driving increasing rain chances through the morning north of I-20.