Aikyam-Lab/Synoptic-Bench huggingface dataset:
/Today through Sunday/ Key Points: -Dry this week with temperatures fluctuating between the upper 70s to mid 80s Details: A weak cold front bisects the state early this morning as delineated by a band of scattered clouds visible in GOES-16 Nighttime Microphysics and in surface observations across the area. High pressure situated to the southwest will place Iowa within a southerly flow, warm air advection regime this afternoon, pushing temperatures across the state into the 80s with upper 80s possible south.
/issued 644 PM CDT Sun Sep 5 2021/ Convection is ongoing across the region associated with a south moving cold front. Temperatures will be significantly cooler than what we saw today, with highs in the upper 80s to around 90 degrees across the area. Overnight lows on Monday night will range from the lower to mid 60s.
218 AM MDT Mon Sep 6 2021 Tail end of a trough moving through Canada today will drag a dry cold front through northeast Montana this afternoon. For the rest of the week the main story will be a large dome of High Pressure centered over Utah.
An upper level ridge/trough pattern continues over the U. The ridge was building eastward over the central High Plains today and this will result in warmer temperatures across western Kansas today.
345 AM EDT Mon Sep 6 2021 A weak cold front will slip southeast through our region today.
(Today and tonight) An upper level high will remain over the Great Basin today, with weak northerly flow aloft over our area. The upper level ridge currently centered over the Great Basin area will slowly shift eastward into the Four Corners area by the second half of the week, and into the weekend. The ridge will flatten somewhat over the weekend, but will still be strong from the Desert Southwest into Texas.
112 AM EDT Mon Sep 6 2021 A weak cold front will slip southeast through our region today.
Looking at surface obs this morning, the approaching cold front has moved across Central LA and is nearing the HWY 190 corridor at this time.
418 AM EDT Mon Sep 6 2021 Latest analysis shows a surface cold front moving southeast away from the area. High pressure is building in from the west and is expected to settle over the area by tonight. At the upper levels, a trough is swinging through the northeast and a ridge continues to build across the western US.
2am temperatures were 4-9 degrees warmer than 24hrs ago, with readings in the low to mid 60s. Forecast soundings show another day of deep mixing between 800-750mb, which would yield afternoon highs a few degrees warmer than yesterday in the low to mid 80s.
Ahead of a mid-level digging trof, a very warm to hot airmass will advect east into the Northern Plains.
405 AM EDT Mon Sep 6 2021 Currently - A surface through lower tropospheric ridge extends across the Florida Strait. The best that can be said about flow aloft is it is generally nebulous with weak troughing in the Gulf of Mexico and east northeast of the Bahamas. Forecast - Over the next couple of days, the weak ridge across our area will expand and connect with a high moving eastward through the eastern United States as a mid latitude trough lifts out. Around mid week another mid latitude trough will swing through the eastern states and the ridge will again narrow across our area.
339 AM CDT Mon Sep 6 2021 The main concern for the near-term forecast is in regards to fire weather as a cold frontal boundary drops through the state today. Minimum relative humidity values are also expected to drop to 15 to 25 percent, with the lowest values in far southwestern North Dakota. Highs today will be rather warm from the low 80s north to the low 90s south.
06Z TAF discussion: As a weak cold front pushes into and through the region today, chances for SHRA and TSRA will shift to southern and eastern TAF sites. Very little of this is being sustained as the airmass is trying to moisten but instability remains on the low side. Dewpoints have come up some and are in the lower to mid 70s across the western half of the forecast area. Further north, showers and an isolated thunderstorm have regenerated along the cold front that will push through the region later this afternoon through tonight. Dewpoints will drop into the lower to mid 60s through Monday night with the exception being in the southeast, where 70s dew points will stick around. Cooler weather looks to occur tomorrow with highs mainly in the 80s.
Despite temperatures rising into the low to mid 90s, dew points will largely remain in check thus heat indices will struggle to reach into the mid 90s.
A broken line of heavy rain along with a few tstms continues to move east across parts of north cntrl/NE AL this late Sun evening, along and just ahead of a weak cold front crossing thru NW AL. Modest cold air advection on Monday will limit high temperatures to the low to mid 80s as skies gradually clear, so it should be a very pleasant Labor Day in the afternoon and evening.
Upstream ridging will be short lived as focus shifts to relatively strong short wave trough across British Columbia.
Strong high pressure will bring hot afternoons and dry weather to the region through at least mid week.
1103 PM MDT Sun Sep 5 2021 A strong ridge of high pressure will be shifting slowly east from the Great Basin into the Central Rockies this week. Very dry conditions are expected underneath this ridge with temperatures jumping back into the 90s for the lower valleys with 70s/80s across the higher elevations. With this dry air mass in place, expect big diurnal swings with our overnight temperatures dropping a solid 30-40 degrees from afternoon highs in the lower valleys.
1034 PM CDT Sun Sep 5 2021 High pressure centered over eastern Kansas will drift southeast tonight, and spread out until the ridge axis stretches from eastern Texas up Kentucky into West Virginia by Monday Afternoon. Expect some steam fog on area rivers with temperatures dropping this low, though widespread fog does not look likely at this time. Highs on Monday will likely be a few degrees warmer than today.
(Today and tonight) An upper level high will remain over the Great Basin today, with weak northerly flow aloft over our area.
An upper ridge centered around the Great Basin will continue to strengthen today with continued northerly to northwest flow aloft locally. Combined with the low level moisture available, this may produce some very isolated rain showers or thunderstorms.
100 AM CDT Mon Sep 6 2021 (This evening through Monday) A weak cold front will continue to slowly move south across the area late this afternoon and evening. On Monday, near seasonal temperatures are forecast, with highs in the low to mid 90s. The remnant cold front will be located across our southern counties. The upper level ridge currently centered over the Great Basin area will slowly shift eastward into the Four Corners area by the second half of the week, and into the weekend. The ridge will flatten somewhat over the weekend, but will still be strong from the Desert Southwest into Texas.
143 AM EDT Mon Sep 6 2021 High pressure will remain over the region tonight then move offshore as a weak cold front approaches from the northwest. Weak high pressure remains over the area but will weaken overnight as a cold front over the Ohio/Tennessee Valleys approaches tonight. Winds have become light to near calm and dewpoints have rebounded into the lower to mid 60s. Expect overnight lows in the lower to mid 60s. A cold front pushes into The Midlands and CSRA Labor Day afternoon.
327 AM EDT Mon Sep 6 2021 Latest analysis shows a surface cold front moving southeast away from the area. High pressure is building in from the west and is expected to settle over the area by tonight. At the upper levels, a trough is swinging through the northeast and a ridge continues to build across the western US.
1224 AM CDT Mon Sep 6 2021 High pressure aloft, located over the SW, will keep conditions dry and temps above average. As the troughing moves through, it will transition winds to northwesterly, and advect in cooler air as it does.
119 AM EDT Mon Sep 6 2021 A weak cold front will continue to move away from the region tonight as high pressure builds east into the Ohio Valley.
152 AM PDT Mon Sep 6 2021 High pressure remains across the region early this week with very warm temperatures and light winds. Temperatures will remain warm to hot early this week as high pressure strengthens across the West.
200 AM CDT Mon Sep 6 2021 For today, warmer and dry weather can be expected across the region with highs in the middle to upper 80s. For tonight, overnight lows will fall into the lower 60s, with a few locations across the eastern Ozark valleys dipping into the 50s.
311 AM CDT Mon Sep 6 2021 Yesterday's frontal passage has left us with moist ground conditions and cooler temperatures. With highs in the low 80s, it should be a very pleasant day.
1105 PM EDT Sun Sep 5 2021 A weak cold front will clear the region early tonight leaving a pleasant Labor Day with seasonal temperatures and partly sunny skies.
322 AM CDT Mon Sep 6 2021 High pressure remains firmly in control throughout the mid- Mississippi Valley region early this morning, resulting in almost completely clear skies and light winds. Overnight conditions will likely be similar to the previous night, although slightly increased southwesterly winds will keep temperatures slightly warmer, and may limit the coverage of fog.
LW Chattanooga Airport, TN 83 63 86 68 88 / 10 0 20 10 20 Knoxville McGhee Tyson Airport, TN 82 61 86 67 86 / 10 0 10 10 20 Oak Ridge, TN 81 61 85 65 86 / 10 0 10 10 20 Tri Cities Airport, TN 81 56 85 63 84 / 10 0 0 10 30.
230 AM CDT Mon Sep 6 2021 Latest water vapor imagery shows a mid level trough extending through the Ohio Valley and into the lower MIssissippi Valley early this morning. At the surface, a cold front was draped from its parent low over PA, south-southwestward through eastern TN and into southern MS. The mid level trough will swing through the TN Valley during the day, pushing the cold front south of the area and bringing in drier air to the TN Valley. This will make for a fairly pleasant day, with clearing skies and highs warming into the lower to mid 80s. The axis of a mid level trough will weaken as it moves east of the area, causing the surface cold front to stall just south of the area before it dissipates completely.
1144 PM CDT Sun Sep 5 2021 Midlevel ridging over the western CONUS will continue to build over the next couple of days.
Cold front was in Southern Alberta, through Calgary, early this morning. The wave will push the cold front S through the area toward 00Z through 03Z.
GOES water vapor imagery shows a ridge building over the western CONUS, a digging trough across the Great Lakes Region, and generally northwest flow over the central CONUS.
A cold front will approach from the northwest Monday morning with increasing chances for showers and thunderstorms. The upper level ridge of high pressure centered along the northern Gulf Coast this evening will continue to move south and weaken. An upper level trough digging across the Mississippi Valley and an associated surface cold front will drop southeast into the forecast area on Monday.
High pressure dominates over the southwestern CONUS through the forecast period with northwest flow aloft over the Tri-State area. An upper trough embedded in the northwest flow will move across the area. Lows will range from the mid-50s in Eastern Colorado to the low 60s. Relative humidity values in this area will fall into the low to mid-teens during the afternoon.
446 AM EDT Mon Sep 6 2021 A flat upper ridge will dominate the southeast through the short term. The forecast area will be on the southern end of a trough moving across the Great Lakes.
249 AM EDT Mon Sep 6 2021 A weak cold front will clear the region early tonight leaving a pleasant Labor Day with seasonal temperatures and partly sunny skies.
100 AM MDT Mon Sep 6 2021 The Labor Day holiday will be dry and warm across the Western Slope as a strong 597 dam ridge continues to dominate the Great Basin.
Despite low dewpoints in the upper 50s to lower 60s the lack of wind and relatively chilly temperatures will allow for some patchy fog to form, likely in the form of shallow fog mainly in the lower spots such as river valleys. Warm air advection within this southerly surface flow will get some warmer afternoon temperatures than the previous few days. Perhaps bringing some relief to the warming temperatures is that the mid level ridge will be centered a bit to the weest of the forecast area.
High pressure will move across the area Monday resulting in a pleasant day with highs in the lower 80s for most areas. This will lead to milder overnight lows in the lower 60s.
The models agree on the general weather pattern with the an upper level ridge to the west and a large upper level trough to the east. The ridge will move toward the Mid-South by the end of the week.
1243 AM CDT Mon Sep 6 2021 After the showers and thunderstorms dissipated this morning, it has been a pleasant day with mostly clear skies and highs in the low to mid 80s for most. Weak ridging moves overhead Monday allowing temps to increase a bit more.
An upper ridge centered around the Great Basin will continue to strengthen today with continued northerly to northwest flow aloft locally. Combined with the low level moisture available, this may produce some very isolated rain showers or thunderstorms. A cold front, now currently evolving across southern Saskatchewan, is expected to surge southward and near the CWA late in the day Tuesday.
735 AM EDT Mon Sep 6 2021 A flat upper ridge will dominate the southeast through the short term. The forecast area will be on the southern end of a trough moving across the Great Lakes. The upper level trough centered over the Great Lake states begins to dig south into the Mid MS river valley Wed morning. At the same time there is a second cold front that weakens substantially as it moves out of the Upper MS river valley and pushes into NW GA late Wed night. The second and much drier cold front moves into NW GA late Wed into Thu morning and pushes the old stalled boundary and the tropical wave South and east across the state.
Yesterday's frontal passage has left us with moist ground conditions and cooler temperatures. With highs in the low 80s, it should be a very pleasant day. It looks like this will be a dry cold front.
Look for mainly dry conditions for Labor Day and into mid week with just a slight chance of thunderstorms over the higher terrain of east-central Arizona.
951 AM CDT Mon Sep 6 2021 Warm front is orientated along the RRV in ND and shifting eastward, and SW flow/WAA in the BL and sunny skies is supporting good temperature recovery (already around 70). A modest push of cooler air follows on Tuesday, and the CAA and tighter pressure gradient behind the low will yield 20 to 25 mph winds with gusts in the mid to upper 30s possible. With 500mb ridging expected, high confidence as ensemble spread is low, to prevail for much of the forecast period dry conditions are expected with normal or seasonal temperatures this week.
Sandwiched between the subtropical ridge over the Bahamas and a longwave trough over the Great Lakes, steering flow will favor a pull to the east or east-northeast over northern FL.
Mean layer ridging has consolidated to the east of the Bahamas and stretches west, to north of the Yucatan Channel. Stagnant, light and variable breezes, and highs in the lower 90s will make for a hot and humid late morning and early afternoon, that is, until the afternoon storms interrupt the tropical heat. Weak high pressure will persist over or near the Florida Keys today, resulting in light and variable breezes. As high pressure begins to build in from the east on Tuesday, breezes will shift to the east to southeast.
This wave will continue to move eastward and deepen over the Great Lakes region on Tuesday and push a cold front southward across Kansas. Temperatures will heat up ahead of the cold front over southern Kansas along with increasing low level convergence.
High pressure dominates over the southwestern CONUS through the forecast period with northwest flow aloft over the Tri-State area. An upper trough embedded in the northwest flow will move across the area. Lows will range from the mid-50s in Eastern Colorado to the low 60s. Relative humidity values in this area will fall into the low to mid-teens during the afternoon. A cold front slips south into the Tri-State area Tuesday, bringing temperatures down slightly. Despite the higher RH values, drying conditions on Monday and gusty winds as the front moves through will help to dry out fuels and could potentially aide in the spread of any fires that pop up.
Cold front brings windy conditions for Tuesday. This smoke coverage may be the highest over the west river areas and could minimally impact temperatures. The higher elevations of the Coteau des Prairies may see a marginal boost in highs as well given the southwesterly winds. With a persistent mixy wind ahead of the boundary, will keep temperatures a bit warmer overnight. TUESDAY: A cooler and windy day is anticipated on Tuesday, with highs settling back into the 70s in most areas.
/issued 414 AM CDT Mon Sep 6 2021/ SHORT TERM (Now through Tuesday): A 500mb trough swings across the Great Lakes and into the Northeast, dragging a cold front down into south-central Texas today where it stalls and dissipates into Tuesday. The strength of the mid level ridge anchored across Nevada weakens locally through the short term as low level moisture increases into Tuesday afternoon.
A trough will lift out to the northeast this morning and allow short term ridging to build into the Upper Midwest today. Another trough will approach from the northwest tonight and a surface cold front will swing through late. However, a cooling boundary layer beneath a thermal ridge axis in advance of the front will create some sizable capping issues with southward extent. Strong CAA and a deepening trough will lead to windy conditions Tuesday. The trough centered south of Hudson Bay will continue to deepen slowly for the rest of the week as it crawls northeast. Meanwhile, an impressive 596 dm ridge over the southwest will remain nearly stationary into late week as well.
The remainder of this week will feature near-record heat as an unseasonably strong area of high pressure dominates the region. Strong high pressure dome over the Great Basin will continue to strengthen today and Tuesday. The flow around this high will continue to usher in dry air from UT/CO, limiting afternoon thunderstorms to a few over the Mogollon mountains in Catron County, a storm or two over the Sacramento and Capitan mountains and a few storms in Union county this afternoon. Above average temperatures will be the rule areawide today and Tuesday thanks to the above mentioned high pressure dome and the lack of moisture resulting in cloud cover.
Upstream ridging will be short lived as focus shifts to relatively strong short wave trough across British Columbia. Short wave trough will become closed low over Ontario as upper flow amplifies.
Current Watervapor loop shows the upper level ridge axis extending northward from the main upper level high across the southern Great Basin region today. This ridge axis is expected to flatten as a fast moving Canadian cold front brushes the central Front Range tonight. Daytime highs in the low to mid 90s across the high plains may result in a few record highs. Cooler temperatures are expected Tuesday behind the front, but highs will still be slightly above normal for this time of the year and generally in the upper 70s to mid 80s across most of the area.
A weak cold front on the backside of the mean Eastern CONUS trough will slowly slide south today before stalling out tonight somewhere near the I-85 corridor. Temperatures will range from the lower 80s north to around 90 south.
High pressure has moved in leading to cool overnight lows with some locations reaching mid to upper 30s in northern Minnesota. Strong return flow on the back side of a high pressure will allow Temperatures to rebound to above normal highs in the low to upper 70s for. Initially, the precipitation appears to be elevated as a warm front sets up over western MN leading to an isentropic lift/waa regime noted in the 305-310K level. As the system moves eastward a cold front will swing through in the early morning hours of Tuesday ~06Z which will help with surface-based convection. Should also mention that the pressure gradient behind the low pressure system will lead to strong northwesterly winds/gusts with some locations experiencing 30+ mph winds.
407 AM MDT Mon Sep 6 2021 An upper level high will remain over the Great Basin with dry northwest flow aloft over the area. This will lead to highs in the lower to mid 90s across nern CO.
and Tuesday High pressure was building into the forecast area early this morning. Have bumped up temperatures a couple degrees, with highs expected to reach the lower to middle 70s at most locations. On Tuesday, a deepening low pressure system moving through Lake Superior will drag a cold front through the forecast area in the morning and early afternoon. Though the initial round of convection should exit northeast WI in the morning, it is possible for scattered storms to redevelop along the cold front around midday in eastern WI.
SHORT TERM (Now through Tuesday): A 500mb trough swings across the Great Lakes and into the Northeast, dragging a cold front down into south-central Texas today where it stalls and dissipates into Tuesday. The strength of the mid level ridge anchored across Nevada weakens locally through the short term as low level moisture increases into Tuesday afternoon.
For today, warmer and dry weather can be expected across the region with highs in the middle to upper 80s. For tonight, overnight lows will fall into the lower 60s, with a few locations across the eastern Ozark valleys dipping into the 50s.
607 AM CDT Mon Sep 6 2021 High pressure remains firmly in control throughout the mid- Mississippi Valley region early this morning, resulting in almost completely clear skies and light winds. Overnight conditions will likely be similar to the previous night, although slightly increased southwesterly winds will keep temperatures slightly warmer, and may limit the coverage of fog. While dry conditions will persist through at least early afternoon, an approaching cold front may bring with it a slight chance of showers and perhaps a few thunderstorms late in the day. Throughout the day, a strengthening upper trough will dig into the Great Lakes and drive this cold front through the mid-Mississippi Valley between late afternoon and late evening. Shower chances will diminish overnight, and the cold front will continue to push south and out of the area.
512 AM MDT Mon Sep 6 2021 The Labor Day holiday will be dry and warm across the Western Slope as a strong 597 dam ridge continues to dominate the Great Basin. Tuesday will be more of the same as the high only continues to strengthen with its axis extending north into western Canada while its center drifts slightly east over Utah.
Despite low dewpoints in the upper 50s to lower 60s the lack of wind and relatively chilly temperatures will allow for some patchy fog to form, likely in the form of shallow fog mainly in the lower spots such as river valleys. Warm air advection within this southerly surface flow will get some warmer afternoon temperatures than the previous few days. Perhaps bringing some relief to the warming temperatures is that the mid level ridge will be centered a bit to the weest of the forecast area. All in all, looking at temperatures in the lower to middle 80s with dry surface conditions should make for pretty pleasant late summer/early fall weather.
823 AM EDT Mon Sep 6 2021 Mainly dry weather and seasonable temperatures are expected through Tuesday under building high pressure.