Aikyam-Lab/Synoptic-Bench huggingface dataset:
310 PM EDT Wed Apr 16 2025 Cool and dry high pressure will build in from the west through tonight before shifting offshore on Thursday.
An upper level area of low pressure over eastern Canada should move towards Greenland over the next couple of days. This, and synoptic scale troughing forming over the western North American domain, should result in a ridging pattern forming over the eastern CONUS. Under a slowly developing upper ridge, dry conditions should continue.
330 PM EDT Wed Apr 16 2025 High pressure builds in from the west tonight and persists for Thursday.
WEATHER PATTERN OVERVIEW: After the sudden gusty winds this morning with the cold frontal passage, we experienced a lull in wind speed through the middle of today. This cold Canadian low pressure trough will be slow moving through our region. The next approaching warm ridge of high pressure will arrive later this weekend. High confidence on the cooler temperatures today with north winds strong enough for a Lake Wind Advisory. DISCUSSION: A cold Canadian trough will direct north winds and rain showers changing over to snow showers through this TAF cycle. Expect cooler and unsettled conditions through the rest of this work week.
1219 PM CDT Wed Apr 16 2025 (Today through Thursday) Cold front stalling well offshore this morning but providing very nice, cool dry conditions to our area today and Thu.
Split upper trough will move slowly through western North America tonight and tomorrow. One main upper low moving from northern Saskatchewan into Manitoba will help push a cold front into our CWA. However, any impacts are very unlikely with METRo roadcasts keeping our area above freezing.
318 PM EDT Wed Apr 16 2025 High pressure strengthens overhead through the weekend, keeping conditions dry across our area. Tonight: Dry high pressure will continue to prevail across the region with the center of the high becoming centered just to the north across the central/southern Appalachians. While temperatures aren't expected to be quite as cool as they were last night, we are still forecasting mid to upper 40s inland ranging to the low 50s along the immediate coast. Upper level ridging pushes eastward across the Ohio River Valley Thursday, allowing quiet conditions to continue across our area.
(This evening through Thursday) High pressure now lies over the forecast area. The pressure gradient was relaxing but with the trough to the east there was still some gusty winds over southwest Virginia and northeast Tennessee.
- Meteorological Overview: An upper level trough will continue to dig into the Northern Rockies today, bringing a cold front and a round of precipitation to the area. Snowfall will continue to move southward this evening and overnight tonight as the cold front and trough slide further south, and winds will also pick up across Southwestern Montana as the cold front slows, allowing the pressure gradient to strengthen, with the strongest winds expected in the North South oriented valleys.
pdf High pressure to the northwest Today, will build to the north Tonight. With subsidence under ridging, and dry air in place a mainly clear night is forecast. The change in location of the high will result in the flow coming more from the northeast overnight. Due to this onshore flow, areas along the coast will be notably warmer overnight, than locations further inland.
Then the cold front blasts across the state Wednesday evening. With temperatures stuck in the low to mid 30s through the day, along with moderate snowfall rates, feel the probabilities remain high for significant accumulations in some lower elevations. A strong cold front sweeps southward across the state overnight, bringing quickly dropping cigs and increasing precipitation, along with an abrupt wind shift from the north.
The SE winds have helped with the Gulf of America near shore waters in the lower 70s. Tonight will be much warmer with the dew points climbing all day and into the night.
(This evening through Thursday Night) With a ridge axis gradually moving over Southeast Texas today, expect the warm and dry conditions to persist. High temperatures in the low to mid 80s today will reach the mid to upper 80s on Thursday as 850mb temperatures reach the 90th percentile (NAEFS/GEFS).
129 PM EDT Wed Apr 16 2025 Dry high pressure will linger over OUR region through the weekend with a gradual warming trend.
Today remains the warmest day of the week as temperatures will reach the high 60s to low 70s. Looking at satellite, the cold front that will move through the region later today is currently entering eastern Oregon, moving southeast.
Temperatures have risen into the lower to mid 80s, while dew points have held steady in the mid 60s. The tail end of a decaying cold front is slowly trekking southward this afternoon and will bleed through this evening and overnight. Quickly filling in behind this frontal boundary will be the next high pressure. Said high pressure is currently elongated across the entirety of the Mississippi Valley and spilling into the Gulf. Over the next 24 hours, the high will consolidate and gradually build as it settles across the Mid-Atlantic region.
Deep layer ridging will build over the forecast area tonight through Thursday night. Highs on Thursday will be quite warm, primarily in the lower 80s for most locations except for mid to upper 70s closer to and along the coast.
744 PM EDT Wed Apr 16 2025 Dry high pressure lingers over the area through the weekend and temperatures warm a little each day.
A cold front is moving through the area this evening and is reaching the Boise metro. The main upper level trough center appears to be near Moscow ID this evening and this feature will continue to move south overnight into Nevada and Utah by Thursday midday. Snow showers will mainly be focused over the higher terrain, but if the center of the system is farther west (10 percent chance), could see isolated snow showers across the Boise metro Thursday morning. Northwesterly winds will increase Thursday morning through Thursday afternoon following the cold frontal passage.
Cooler temperatures again today. (This evening through Thursday) Cooler and cloudy conditions exist over San Francisco area and for portions of the North Bay. The longwave pattern shows the cut-off upper level low that has been spinning off the coast will move inland near LA as it transitions to an open wave. As this happens, another wound up upper low sweeps through the Great Basin.
Above normal temperatures today will give way to cooler, unsettled weather going into the weekend.
731 PM EDT Wed Apr 16 2025 Stacked low pressure over Quebec will SLOWLY lose its grip on our region during the course of tonight. High pressure over the Upper Great Lakes will move over our region on Thursday.
An upper trough (insider slider) will drop south into the area this evening and tonight. The upper trough will move east of the area Thursday ushering in a cooler and drier air mass, with moderate to occasionally strong winds east of the Cascades Thursday afternoon into Thursday evening.
1045 PM EDT Wed Apr 16 2025 Stacked low pressure will exit into the Canadian Maritimes overnight, with clearing skies allowing temperatures to fall into the 20s. High pressure over the Upper Great Lakes will move over our region on Thursday.
High pressure will settle in over the southeast U. Above average temps in the mid to upper 80's return on Thursday, but lower humidity will stick around for one more day, making it a little more comfortable, before the humidity and even warmer temps return over the weekend. High pressure builds in over the southeast U.
1021 PM EDT Wed Apr 16 2025 High pressure strengthens overhead through the weekend, keeping conditions dry across our area. This is courtesy of high pressure atop the area, and with dew points down in the 40s, that's where most lows will end up early Thursday morning. For the most recent update we have lowered some of the typically cooler spots to 42-43F, such as along the northwest tier and in Berkeley County, with the "warmest" of mid 50s in the Charleston metro, plus near and along the coast. Upper level ridging pushes eastward across the Ohio River Valley Thursday, allowing quiet conditions to continue across our area.
638 PM CDT Wed Apr 16 2025 (Tonight through Thursday night) For the short term period, ridging will remain in place overhead through much of the period and begin to slowly slide eastward Thursday evening. At the same time a mid/upper level trough will dig into the Great Basin allowing low pressure to develop at the surface across the High Plains. While the high pressure in place will maintain warm and dry conditons over us, the increased surface pressure gradient will lead to breezy conditions tonight into Thursday.
A weather system will bring dramatic changes to the weather across northern Arizona starting Thursday with increasing southwest winds and much cooler temperatures.
Look for a continuation of the isolated to scattered rain showers and isolated thunderstorms through the late afternoon ahead of a cold front.
713 PM EDT Wed Apr 16 2025 High pressure strengthens overhead through the weekend, keeping conditions dry across our area. Using the cooler guidance we have lowered mins down about 2-4F from earlier, with the coolest of 43-44F along the northwest tier and Berkeley County, with the "warmest" of mid 50s in the Charleston metro and near and along the coast. Tonight: Dry high pressure will continue to prevail across the region with the center of the high becoming centered just to the north across the central/southern Appalachians. While temperatures aren't expected to be quite as cool as they were last night, we are still forecasting mid to upper 40s inland ranging to the low 50s along the immediate coast. Upper level ridging pushes eastward across the Ohio River Valley Thursday, allowing quiet conditions to continue across our area.
604 PM EDT Wed Apr 16 2025 Dry high pressure lingers over the area through the weekend and temperatures warm a little each day.
- Rain transitions to snow across portions of northwest Nebraska Thursday night, with a threat for light (~1-2") accumulations near the Pine Ridge. This cold front will continue to push south tomorrow afternoon, with much of the area post-frontal by Noon.
802 PM EDT Wed Apr 16 2025 Cool and dry high pressure will build in from the west through tonight before shifting offshore on Thursday.
Most snow accumulations are on the grassy areas at lower elevations at this time, but do expect reduced driving visibility, along with some slushy snow accumulations, especially on bridges. Brusda /Issued 257 PM MDT Wed Apr 16 2025/ - Meteorological Overview: An upper level trough will continue to dig into the Northern Rockies today, bringing a cold front and a round of precipitation to the area. Snowfall will continue to move southward this evening and overnight tonight as the cold front and trough slide further south, and winds will also pick up across Southwestern Montana as the cold front slows, allowing the pressure gradient to strengthen, with the strongest winds expected in the North South oriented valleys.
741 PM EDT Wed Apr 16 2025 (This evening through Thursday) High pressure now lies over the forecast area. The pressure gradient was relaxing but with the trough to the east there was still some gusty winds over southwest Virginia and northeast Tennessee.
935 PM CDT Wed Apr 16 2025 Stable conditions expected tonight as an upper-level ridge remains firmly established overhead. The SE winds have helped with the Gulf of America near shore waters in the lower 70s. Tonight will be much warmer with the dew points climbing all day and into the night.
927 PM EDT Wed Apr 16 2025 High pressure builds in from the west tonight and persists for Thursday.
An upper level low off the central CA coast is continuing to bring mid level moisture in wrap around flow to the eastern and southern portions of the forecast area today. An upper level trough is approaching from the north and this will push the cut- off low out of the area tonight, ushering in drier northerly air. Main hazard from this high based convection will be isolated cloud-to-ground strikes and perhaps gusty outflow winds. With the passage of an upper trough tonight and ridge building aloft, extensive cloud cover should diminish on Thu.
738 PM PDT Wed Apr 16 2025 Cooler temperatures again today. Sarment (This evening through Thursday) Cooler and cloudy conditions exist over San Francisco area and for portions of the North Bay. The longwave pattern shows the cut-off upper level low that has been spinning off the coast will move inland near LA as it transitions to an open wave. As this happens, another wound up upper low sweeps through the Great Basin.
744 PM EDT Wed Apr 16 2025 High pressure builds in from the west tonight and persists for Thursday.
704 PM EDT Wed Apr 16 2025 Winds diminish this evening as High pressure builds over the area. With high pressure over the area, expecting light winds and mostly sunny skies Thursday.
626 PM CDT Wed Apr 16 2025 (Tonight through Thursday night) Upper air analysis this morning showed a ridge over the south- central part of the country with anticyclonic flow over Texas. High pressure in the low levels has the flow from the southeast across our CWA. The upper ridge will progress toward the east through this period. The low level pattern will remain the same with southerly to southeasterly winds continuing. Lows each morning will increase a few degrees and highs Thursday will be a few degrees warmer than today.
With the area remaining under the influence of increasing upper ridging, quiet conditions will continue through the near term, and no forecast updates are required at this time. Tonight, temperatures will be about 10 degrees warmer than last night, falling into the 50s F as winds turn southerly around the western flank of the high pressure center responsible for the fair weather.
640 PM CDT Wed Apr 16 2025 (This evening through Thursday Night) With a ridge axis gradually moving over Southeast Texas today, expect the warm and dry conditions to persist. High temperatures in the low to mid 80s today will reach the mid to upper 80s on Thursday as 850mb temperatures reach the 90th percentile (NAEFS/GEFS).
609 PM CDT Wed Apr 16 2025 Deep layer ridging will build over the forecast area tonight through Thursday night. Highs on Thursday will be quite warm, primarily in the lower 80s for most locations except for mid to upper 70s closer to and along the coast.
905 PM EDT Wed Apr 16 2025 High pressure will build into the area through Thursday before moving offshore Thursday night.
353 AM EDT Thu Apr 17 2025 High pressure will build into the area through today before moving offshore tonight.
1257 AM EDT Thu Apr 17 2025 High pressure builds in from the west tonight and persists for Thursday. Low pressure lifts into the Great Lakes on Friday, lifting a warm front through the region.
A large mid to upper trough moves east through the region this weekend.
Returns from the KBYX radar did not indicate any precipitating clouds and GOES East nighttime microphysics RGBs observed occasional layers of stratus across the Lower Keys. Temperatures across the Keys hold steady in the lower 70s while the typical exception of the Big Pine RAWS measured a drop into the upper 60s. Zooming out, a deep layer ridge building over the ArkLaTex region will become the defining feature of the upcoming weekend.
119 AM EDT Thu Apr 17 2025 - Trending warmer and breezy into Thursday and Friday with highs near 80F Friday. An elongated, narrow, low level ridge from western Ontario south through WI/IL will move east through the local area tonight with quiet weather and light winds. Southerly winds then pick up a bit on Thursday resulting in warmer temps. Southwest flow deepens and lifts a warm front through Friday morning with renewed nocturnal/elevated convection possibly clipping far northern portions of the forecast area.
138 AM EDT Thu Apr 17 2025 Warmer today with sunny skies expected region wide as high pressure builds in.
(Rest of tonight and Thursday) Tranquil weather across the Tennessee Valley for the remainder of the overnight hours, with high pressure in control of our sensible weather. With high pressure setting up east of the area on Thursday, southerly flow will increase across the Deep South.
203 AM EDT Thu Apr 17 2025 High pressure to bring dry weather through Thursday night. A warm front crosses the region Friday morning, with a chance of a few showers. A cold front will then bring a better chance of showers Friday night into the weekend. Clearing skies overnight and lighter winds as high pressure builds into the Lower Lakes. as the area of high pressure will push away to our east. as a non-diurnal temp trend will help to keep the mercury above freezing over the western counties.
High pressure surface and aloft will build over west central and southwest Florida today and will hold over the region through the weekend. As the U/L ridge builds over the area, temperatures will climb a few degrees today and again on Friday.
1206 AM CDT Thu Apr 17 2025 (This evening through Thursday Night) With a ridge axis gradually moving over Southeast Texas today, expect the warm and dry conditions to persist. High temperatures in the low to mid 80s today will reach the mid to upper 80s on Thursday as 850mb temperatures reach the 90th percentile (NAEFS/GEFS).
157 AM PDT Thu Apr 17 2025 * A cold front brings gusty winds and cooler weather Thursday with a few rain and snow showers mainly near the Sierra. This is a result of the upper trough swinging down through the Great Basin while absorbing the system that affected us yesterday. The associated cold front will be passing through the area from north to south today bringing gusty northerly winds and cooler temperatures. Mineral county will have gusts close to 35-45 mph and greater over the mountains ridges and southern slopes. An upper level ridge takes over on Friday as it slowly moves in leading to the beginning of a warming and drying trend.
1137 PM CDT Wed Apr 16 2025 (Rest of tonight and Thursday) Tranquil weather across the Tennessee Valley for the remainder of the overnight hours, with high pressure in control of our sensible weather. With high pressure setting up east of the area on Thursday, southerly flow will increase across the Deep South.
- Rain transitions to snow across portions of northwest Nebraska tonight, with a threat for light accumulations from 1 to 2 inches near the Pine Ridge.
Discussion: Ridging begins to build across the Ohio and Tennessee valleys today, starting what will be a significant warm up as we head into the weekend.
Broad and expansive upper troughing is viewable on water vapor satellite imagery extending from central Canada southwest into the northern High Plains and Great Basin. Energy moving through the lee of the positively tilted trough is forecast to move over the Northern Plains and Upper Midwest, helping provide forcing for ascent to our area. As broad upper troughing migrates east, cooler air will continue to be reinforced feeding into our area. This will make for a blustery Friday with temperatures not exceeding 50 and continued breezy northerly winds, contributing to wind chills near and below freezing.
High pressure will allow dry conditions and above normal temperatures to persist through the end of the work week as our stretch of pleasant weather continues. A short wave passing east of the Cascades is supporting N/NW flow aloft but will shift eastward overnight, allowing for an amplified ridge to move onshore across the West Coast and PacNW. A thermal across northern California and southern Oregon is expected to build northward, supported by the ridge and aiding in the warm temps to end the week. Friday will be even warmer inland with temps in the mid to upper 70s with temps similar to Thursday along the coast. Expect northerly to northwesterly winds in the lowland and easterly downslope winds on the west side of the Cascades and Coast Range.
239 AM EDT Thu Apr 17 2025 High pressure will shift offshore later today with temperatures below normal followed by significant warming for the weekend.
207 AM CDT Thu Apr 17 2025 Stable conditions expected tonight as an upper-level ridge remains firmly established overhead. The SE winds have helped with the Gulf of America near shore waters in the lower 70s. Tonight will be much warmer with the dew points climbing all day and into the night.
Tonight will be a radiational cooling night, which means low temperatures will generally be 1-5 degrees cooler than the NBM guidance. Afternoon highs will be in the low to mid 80s on Thursday.
- Warmer temperatures today and Friday, with highs reaching into the upper 80s to mid 90s.
139 AM MDT Thu Apr 17 2025 - Low pressure system arrives today bringing much colder weather with light snow possible even down to valley floors. Low pressure system will sag south into eastern Idaho today. We may see a few hours of advisory level winds in the hills south of Burley this morning ahead of the cold front. Ground temps being warm, not expecting much accumulation in the lower elevations. Elsewhere, the amounts from this storm just look too light for advisories, maybe near the pass level with Montana, perhaps around the higher peaks in the hills south of Burley, or even along the spine of the Idaho Wasatch.
This will result in a continuation of clear skies and warmer temperatures than yesterday. Look for afternoon highs in the lower to mid 80s with lows tonight in the 50s.
250 AM MDT Thu Apr 17 2025 - Late season cold front racing southward, with widespread snow in its wake. The initial edge of the cold front continues to push southward across central WY this morning, with precipitation beginning to fill in across the north. As the north sfc winds increase later this morning, overrunning precip will begin to build across central Wyoming, and with temperatures steady in the low to mid 30s, precip will be nearly all snow through the day.
Unfortunately, much of the FA will probably remain dry tonight with this low precipitation potential. Anyway, starting a cooler trend seemed to be the way to go given the strong and early fropa.
107 AM EDT Thu Apr 17 2025 Cool and dry high pressure will build in from the west through tonight before shifting offshore on Thursday.
Thunderstorms are then possible this weekend with a crossing cold front. KEY MESSAGES: - Gusty wind diminishes this evening - Clear, calm, and cold overnight - Frost Advisory tonight for areas south of Pittsburgh ------------------------------------------------------------------- Relaxing pressure gradient as high pressure builds will allow wind gusts to quickly diminish this evening. Probabilities for temperatures to drop below freezing are largely above 80% areawide and near 100% north of Pittsburgh and along the ridges. KEY MESSAGES: - Gradual warming Thursday before bigger warmup Friday - Dry until shower chances return Thursday night and Friday - Marginal Risk of storms Friday night ------------------------------------------------------------------- High pressure continues dry weather on Thursday.
Weak upper level ridging will build north of the Ohio River today and allow much warmer air to the reach the area. Also, the arrival of an Elevated Mixed Layer (EML) should help initially prevent showers with a sizable cap in the lower levels. High pressure, currently over MI, will retreat through the TAF period. I did remove the -RA chance at both TAF sites due to stout low-level dry air left behind by high pressure and woeful moisture advection. The low-level wind field strengthens after 00z, introducing LLWS.
Most recent sfc analysis depicts sfc cold front has pushed through the CWA with breezy northerly winds developing behind it. Further up in the atmosphere, upper level positively tilted trof is located over the northern Rockies with the trof axis extending from ID/MT into NV/CA. Upper level trof will slide into the region today with the upper level front and moisture advection supporting the development of precip across northeastern WY into portions of western SD through this afternoon. Precip will taper off through Friday with cooler conditions lingering through the weekend.