Aikyam-Lab/Synoptic-Bench huggingface dataset:
This activity looks to continue moving E/SE along a warm front as it lifts north this morning. The warm front will continue lifting north this Sun morning. with a weak upper level ridge in place over the state. Weak disturbances will move around the top of the this weak upper ridge through this afternoon. the weak upper ridging will shift east. with a cold front approaching from the NW late Mon into early Tue. drier and more stable air will move into the region behind the cold front. though a warm front may attempt to lift back north late in the forecast.
A mid-level disturbance moving into the mid- Mississippi Valley along southwesterly flow will initiate and organize an MCS that will track east overnight along a warm front that will be draped across the mid-Mississippi Valley. Instability is expected to be able to rebound back to 1000-3000 J/kg of MUCAPE by the afternoon hours in the wake of a northward moving warm front. Despite this, KUIN and metro terminals will remain near or below 5 knots as winds veer out of the southeast ahead of a warm front Sunday evening. The warm front previously mentioned will approach late Sunday afternoon into the evening with thunderstorms developing along and ahead of the boundary.
- Cold temperatures, in the low to mid 30s, are expected most mornings through the upcoming week.
Nothing to suggest that any site will be anything less than VFR for the remainder of the night as the lowest ceilings at the sites is around 5000 feet currently. An upper trough will move eastward across the region through Sunday. As it does, an upper low ill drop down from Canada on Sunday and into the Great Basin Sunday night. Upper level ridging will move over the area early Monday. Also, as the trough moves and low drops down, snow levels will decrease to as low as 3500 feet in some areas. Locations in the Grand Ronde Valley could be close to freezing, and this will have to be monitored.
(Today through Monday) The subtropical ridge continues summer-like conditions across Deep South Texas into the new week, with low pressure in the Plains enhancing the pressure gradient locally.
1251 AM CDT Sun May 18 2025 - Frost and freezing temperatures tonight, along with lingering scattered light rain/snow showers. Plenty of clouds linger this afternoon as low pressure departs to the east. Some snowflakes may mix in late tonight into Sunday morning, but any accumulations will be limited to a light dusting at best in the higher terrain of the Arrowhead. There is some uncertainty on how low temperatures may fall tonight with plenty of clouds around, but in northeast Minnesota, anything ranging from around freezing to 36 degrees is expected. High pressure will settle in up north in Canada going into Sunday, which will cause winds to become more northeasterly by Sunday morning.
These storms will pass this evening with low pressure slowly moving through the region Sunday through Monday with much cooler temperatures and continued chances of rain. With the cold core of the low overhead, more showers are anticipated, but no severe thunderstorms since temperatures cool off dramatically. Upper low drags northeastward Sunday night pulling rain with it.
- Cooler in the wake of the storm system for mid-week before warming back into the mid 70s, which is normal for Mid-end of May. Lee troughing is/will deepen in response. Monday, the whole system will move eastward and thus so has the highest thunderstorm potential.
A reinforcing cold front settles southward from northern Great Lakes low pressure while sweeping MVFR clouds across southern Lower Mi late tonight and in the morning. Cool (850 MB temps in the mid-single number) cyclonic flow with the large upper-level low-pressure system supporting scattered light showers this afternoon, along with gusty westerly winds around 35 mph. Maxes will be dependent on what happens to the low clouds and whether or not they mix out fast enough. This will assure another dry day as surface ridging extends from strong high pressure over Hudson Bay.
106 AM CDT Sun May 18 2025 - Near-freezing temperatures across central and much of northwest North Dakota late tonight into early Sunday morning, including the James River Valley.
313 AM CDT Sun May 18 2025 Forecast discussion for routine morning forecast issuance - Cold tonight with a 70-90% chance of temperatures at or below freezing across northern Wisconsin.
159 AM EDT Sun May 18 2025 An upper level low will bring rain showers to our region today, with this activity ending from west to east tonight as cooler and drier air builds into our region.
An upper level trough will continue to produce showers through the weekend. Temperatures will slowly climb a few degrees as the forecast progresses, with highs climbing from around 60 to near 70 in the lowlands.
317 AM EDT Sun May 18 2025 Overall expect a warm and generally dry next few days turning cooler and drier by the end of the new work week.
Exactly how far east the dryline advances and how much cloud cover remains across the north and western portions of the area will ultimately determine where storms will develop through this evening Some of the high resolution models are advancing the dryline from an Ozona to San Angelo to Abilene line, before retreating back to the west this evening. Expect overnight lows in the mid 60s to lower 70s tonight and highs in the low to mid 90s on Sunday, with another round of showers and thunderstorms in the afternoon and evening hours on Sunday.
1238 AM CDT Sun May 18 2025 (This evening through Sunday Night) Shra/tstm activity beginning to fire to our wnw in association with daytime heating dryline, and weak impulses tracking along the northern periphery of the ridge.
346 AM EDT Sun May 18 2025 Low pressure moving through the region will bring cool and showery weather today into tomorrow. Cooler weather and additional chances for showers can be expected throughout the upcoming week. A closed upper level low will continue to track eastward across the region, which will bring additional showers to the region throughout the day. Temperatures today will be much cooler compared to recent days, with afternoon highs only climbing into the 50s to lower 60s. As the low continues to pull eastward, shower activity will become less widespread, becoming more focused to the higher terrain and northeastern Vermont under northwesterly flow. Broad cyclonic flow will continue to bring some chances for showers, mainly confined to the higher terrain.
1008 PM CDT Sat May 17 2025 - Temperatures dip to around freezing over central and much of northwest North Dakota late tonight into early Sunday morning, including the James River Valley.
Tornado potential continues to look low, as the low level shear isnât very favorable, but it cannot be ruled out either. Behind the outflow boundary, temperatures and dewpoints have started to recover, shown by some areas warming back up to the mid 80s with dewpoints in the low 60s.
757 PM CDT Tue May 28 2024 (This evening through Wednesday) High pressure will develop over the MS River Valley and slowly move east through the short term. Wednesday morning, as the high pressure moves east, flow will shift to out of the southeast, bringing warm and moist air beginning to advect into the western part of the state.
1046 PM EDT Tue May 28 2024 A cold front stalls just offshore overnight, followed by a second front approaching Wednesday, and moving through into Wednesday night.
352 PM PDT Tue May 28 2024 A return of showers and thunderstorms today with a cold front passage.
748 PM EDT Tue May 28 2024 Drier and cooler weather will continue moving into the region as high pressure builds in from the upper Mississippi Valley. With the drier air now in place and mostly clear skies later tonight, temperatures will be able to drop down into the low 60's in most spots, and likely some spots hit the 50's across the western and northern Midlands.
1009 PM EDT Tue May 28 2024 A cold front will move through this evening.
(Rest of tonight) Only high cirrus can be seen on satellite this evening as high pressure continues to expand across the Midwest and into the Southeast.
Skies are mostly clear with the highest density of coverage over the Upper Keys due to cloud debris from old South Florida seabreeze convection. 54 inches with the moistening of much of the lower levels of the thermodynamic profile.
Cooler air will be advected in for temperatures in the low 50s and isolated ares in the upper 40s. Otherwise, an upper level ridge grows over the region allowing for height rises and drier conditions with temperatures in the 70s inland and 60s along the lakeshore on Wednesday.
931 PM EDT Tue May 28 2024 A cooler and drier air mass will gradually build into the region through the end of the week, with high pressure moving across the region at the start of the weekend.
945 PM EDT Tue May 28 2024 A cold front will cross the region overnight through early Wednesday.
825 PM EDT Tue May 28 2024 A series of moisture-starved, reinforcing cold fronts will lead high pressure from central Canada and the Great Lakes to the Middle Atlantic and Carolinas this week. A broad upper trough over the eastern United States will continue to drift east overnight. A line of thunderstorms is currently over eastern North Carolina associated with the surface cold front near the Atlantic coastline. At the surface, an Appalachian-lee trough will develop with diurnal heating Wed and be overtaken by a moisture-starved, reinforcing cold front that will settle south across the Carolinas Wed night. It will otherwise remain less humid than recent days, and slightly cooler, with highs in the low-mid 80s and lows mostly in the 50s to around 60.
720 PM EDT Tue May 28 2024 A cooler and drier air mass will gradually build into the region through the end of the week, with high pressure moving across the region at the start of the weekend.
537 PM EDT Tue May 28 2024 A cooler and drier air mass will gradually build into the region through the end of the week, with high pressure moving across the region at the start of the weekend.
Temperatures were in the upper 60s to the lower 70s with humidity levels in the comfortable range. Synoptically, upper level ridging resides over the Rockies, bookended by longwave troughing over each coast of the US. At the surface, broad high pressure is noted across the OH Valley. Lower heights aloft and cloud cover will suppress afternoon temps as well, with highs expected in the low to mid 70s.
Water vapor/RAP/00Z observations indicate synoptic large scale troughing across the Mid-West to Great Lakes & gradually pulling off to the northeast.
(Today and tonight) Dry conditions and light northerly winds are expected across the area today in the wake of a weak cold front. Temperatures are forecast to be slightly cooler as a result of the front, with the biggest difference expected in the low temperatures thanks to the drier air.
(Now through Thursday) A broad upper trough remains over the eastern CONUS, with an amplified ridge over the Plains and another trough over the Pacific NW. The upper ridge will shift eastward late tonight, moving east of the Mississippi Valley Thursday.
CIMSS mean layer shows a ridge over the Bay of Campeche into Mexico with another one centered over the Lesser Antilles with weak troughing in between. The eastern Gulf of Mexico, much of Florida and Cuba were underneath this weak upper level troughing as the main trough is further north over the Mid-Atlantic states. It has also been another very warm overnight with temperatures along the Chain in the lower to mid 80s with Big Pine Key down to 76 degrees. At the surface, just enough ridging extends into the Florida Keys associated with a high over the Atlantic.
1206 AM EDT Wed May 29 2024 A cold front will cross the region overnight through early Wednesday.
1216 AM CDT Wed May 29 2024 (This evening through Wednesday) High pressure will develop over the MS River Valley and slowly move east through the short term. Wednesday morning, as the high pressure moves east, flow will shift to out of the southeast, bringing warm and moist air beginning to advect into the western part of the state.
214 AM EDT Wed May 29 2024 A cold front will move through this evening. Slow moving cold front is currently located just offshore forecast to move offshore later this evening, with tstm threat decreasing. CAA behind the front isn't forecast to be overly strong, but it will feel cooler thanks to lowering dewpoints.
1040 PM CDT Tue May 28 2024 High pressure prevails across the Mid-South with light winds and clear skies. Lows will drop into the upper 50s in the typical cooler spots with 60s elsewhere. Cooler temperatures are expected Wednesday featuring highs in the middle 70s to around 80 degrees.
There is still an Enhanced to Marginal risk over the area with the highest threat existing over most of our SETX Counties.
On Thursday, a progressive upper level short wave trough will sweep across the region.
300 AM EDT Wed May 29 2024 A cooler and drier air mass will gradually build into the region through the end of the week, with high pressure moving across the region at the start of the weekend.
204 AM EDT Wed May 29 2024 Low pressure will cross the Ohio Valley tonight and Wednesday pushing a cold front through the Mid Atlantic region along with isolated showers.
(Today through Thursday) The overall pattern today will be similar to yesterday with broad troughing over the east coast and west-northwest flow aloft prevailing over SFL. At the surface, the synoptic gradient will remain light south of a stalled cold front over Central Florida, favoring a relatively deep inland progression of both sea breezes. It will remain another hot and humid day (prior to convective initiation) with highs ranging from the low 90s near the immediate coasts to the upper 90s in the Interior, along with widespread peak heat indices of 100-105 degrees.
Dry and mostly tranquil conditions will be the norm over the next several days as highs across the lower deserts reach into the triple digits. Atmospheric analysis reveals ridging entrenched across much of the western CONUS, promoting dry and tranquil conditions across the Desert Southwest, which will continue for today. Temperatures this afternoon will be a few degrees warmer compared to where they were yesterday due to heights aloft continuing to increase day-by-day. A weak, transient trough will pass over the western CONUS Wednesday, with the greatest energy focused over the Pacific Northwest and northern Rockies.
High pressure following the fropa will build over the southeastern US through tonight and into early Wednesday with dry weather, clearing skies, and slightly cooler temperatures. High temperatures for this afternoon will reach up into the 90s with overnight low temperatures dropping down into the mid to upper 60s over inland areas and in the lower 70s along the coastline. (Wednesday through Thursday night) A dry weather pattern will take hold through midweek, as high pressure builds to the north of our area and the frontal boundary stalls over central Florida. Northwesterly flow will become established behind the boundary's passage, allowing for drier air to move into the area, keeping keeping PoPs chances on the low side for both Wednesday and Thursday.
These systems were moving to the south and southeast, along the edge of an instability ridge, in a northwesterly upper flow.
High pressure has settled across the area, allowing for light wind and cloud free skies early this morning. High pressure will remain in place through the day, making for an absolutely gorgeous Wednesday. Recent model runs have trended towards a cut-off low scenario within the southern stream, reducing moisture transport into the area.
338 AM EDT Wed May 29 2024 (Today through Thursday) High pressure continues to build into the area with a drier airmass in place. High temps today will be mainly in the 80s across the area Today and a bit cooler Thu with the increased cloud cover.
458 AM EDT Wed May 29 2024 Low pressure will cross the Ohio Valley tonight and Wednesday pushing a cold front through the Mid Atlantic region along with isolated showers.
111 AM CDT Wed May 29 2024 Water vapor/RAP/00Z observations indicate synoptic large scale troughing across the Mid-West to Great Lakes & gradually pulling off to the northeast.
/Issued 245 PM PDT Tue May 28 2024/ Overall, the weather should be fairly repetitive this week, with weak high pressure dominating once the current trough moves to the east. The broad trough sitting offshore of Vancouver Island and has forced a weakening front onshore.
1129 PM CDT Tue May 28 2024 High pressure prevails across the Mid-South with light winds and clear skies. Lows will drop into the upper 50s in the typical cooler spots with 60s elsewhere. Cooler temperatures are expected Wednesday featuring highs in the middle 70s to around 80 degrees.
324 AM EDT Wed May 29 2024 High pressure will build in from the west mid to late week, passing overhead and then offshore over the weekend. Today: The cold front is now offshore and will propagate farther way from the area today. A broad, cyclonic flow aloft associated with longwave trough across the eastern CONUS will keep downslope trajectories in the lee of the Southern Appalachians in place again today. The boundary layer looks to decouple by mid-evening resulting in calm/light surface winds even as a secondary, dry cold front crosses the area. Mid level trough persists over the eastern U.
338 AM EDT Wed May 29 2024 Drier and cooler weather will continue moving into the region as high pressure builds in from the upper Mississippi Valley. Morning analysis shows a deep upper low over the Great Lakes region with and upper ridge over the intermountain west. At the surface, weak high pressure continues to build into the region. The upper trough axis will continue to drift eastward today and result in northwesterly 500mb-700mb flow. Atmospheric moisture is relatively low with ensemble mean PWATs around 50 percent of normal and dewpoints mixing out into the lower 50s through the afternoon.
High temperatures should be in the in the lower to middle 80s.
At the surface, the recent cold front will gradually dissipate as it lingers over the Florida Peninsula today and Thursday, with drier air filling in across the forecast area.
Lowered pops across the south this morning from the higher NBM guidance with more uniform chance PoPS this afternoon.
159 AM EDT Wed May 29 2024 A secondary cold front will drop across the region today, sparking a few showers across Western New York along and south of the New York State Thruway. Behind this cold front skies will clear, allowing for excellent radiational cooling conditions both for tonight as well as tomorrow night. when temperatures drop into the low to mid 40s, and upper 30s in the traditionally colder valleys of the Southern Tier and possibly within the Tug Hill region. We will remain overcast though with temperatures settling into the low to mid 50s. While the base of the longwave trough will remain centered over our region on Wednesday. A weak secondary cold front will stall across Pennsylvania at that time as well. Mid-level trough axis will sweep across the eastern Great Lakes Wednesday night through Thursday.
310 AM CDT Wed May 29 2024 - Quiet weather is forecast today through Thursday with high temperatures in the lower to mid 70s.
An upper level trough will move across the northern Great Basin today but is only expected to result in some localized gustiness for our area.
1201 AM EDT Wed May 29 2024 A cold front will shift offshore tonight. High pressure will build in from the west mid to late week, passing overhead and then offshore over the weekend. Lows from the lower 60s well inland to the mid 70s at the beaches still look on track.
109 AM EDT Wed May 29 2024 A cooler and drier air mass will gradually build into the region through the end of the week, with high pressure moving across the region at the start of the weekend.
Synopsis/pattern: cool advection continues, behind low pressure departing eastern Canada. A trailing upper trof drops south toward upper MI late Wednesday. High pressure builds south from Canada toward the northern Great Lakes on Wednesday.
Areas of showers persist over the Northern Rockies early this morning as a weak cold front gradually moves eastward. An upper trough settles in this afternoon through early Thursday with several additional rounds of scattered showers and isolated thunderstorms.
232 AM EDT Wed May 29 2024 A cold front stalls just offshore overnight, followed by a second front approaching Wednesday, and moving through into Wednesday night.
145 AM PDT Wed May 29 2024 Much cooler temperatures are forecast today across Central and Northern Nevada due to a passing cold front through the Intermountain West. Wednesday and Thursday Cooler air infiltrates the area today due to an upper disturbance and attendant cold front making its way through the region.
Shower activity will increase tomorrow as the upper-level trough axis passes through western Washington.
216 AM EDT Wed May 29 2024 Drier and cooler weather will continue moving into the region as high pressure builds in from the upper Mississippi Valley. Morning analysis shows a deep upper low over the Great Lakes region with and upper ridge over the intermountain west. At the surface, weak high pressure continues to build into the region. The upper trough axis will continue to drift eastward today and result in northwesterly 500mb-700mb flow. Atmospheric moisture is relatively low with ensemble mean PWATs around 50 percent of normal and dewpoints mixing out into the lower 50s through the afternoon.
1238 AM EDT Wed May 29 2024 A cold front approaches the region from the northwest tonight, then moves through later Wednesday into Wednesday night before moving offshore.
Temperatures were in the upper 60s to the lower 70s with humidity levels in the comfortable range. Synoptically, upper level ridging resides over the Rockies, bookended by longwave troughing over each coast of the US. At the surface, broad high pressure is noted across the OH Valley. Lower heights aloft and cloud cover will suppress afternoon temps as well, with highs expected in the low to mid 70s. Troughing aloft on Thursday will keep a northwesterly flow over the Ohio Valley keeping our temperatures pleasant with morning lows in the 50s and highs Thursday in the mid 70s.
135 AM EDT Wed May 29 2024 A series of moisture-starved, reinforcing cold fronts will lead high pressure from central Canada and the Great Lakes to the Middle Atlantic and Carolinas this week. A broad upper trough over the eastern United States will continue to drift east overnight. A line of thunderstorms is currently over eastern North Carolina associated with the surface cold front near the Atlantic coastline. At the surface, an Appalachian-lee trough will develop with diurnal heating Wed and be overtaken by a moisture-starved, reinforcing cold front that will settle south across the Carolinas Wed night. It will otherwise remain less humid than recent days, and slightly cooler, with highs in the low-mid 80s and lows mostly in the 50s to around 60.
242 AM EDT Wed May 29 2024 Unsettled, showery, and cooler weather will continue through Wednesday evening as a slow moving upper level disturbance moves through the area. A weak cold front will push southward through Central NY and NE PA through tonight. High pressure will be in control for the end of the work week, giving us quiet conditions. With northerly flow and mostly clear skies Thursday night, good radiational cooling should take place and lead to temperatures cooler than most guidance.
347 AM EDT Wed May 29 2024 - Light showers will carry through the morning near the Ohio border as a low pressure system passes to the south. A cold front will then push southward through the early afternoon which the CAMs are mostly showing sparks up another round of showers and possible some isolated thunderstorms. 0 inch and cooler air in the mid levels briefly enhance the lapse rates and produce up to 500 J/kg of MUCAPE. The high will be centered off to the west keeping northerly flow persisting over SE MI overnight. Low temperatures are forecast down to around 40 but would not be surprised to see a few cooler spots come in with an upper 30.