Aikyam-Lab/Synoptic-Bench huggingface dataset:
620 AM CDT Mon Aug 26 2024 (Today) Another hot day is in store across the region today under the continued influence of mid level ridging.
1013 AM EDT Mon Aug 26 2024 High pressure and mostly dry conditions will persist across the CWA through the short term. A gradual eastward drift in the core of the upper level ridge (from Missouri to Kentucky) will allow 850 mb temperatures to climb 3 to 4 degrees C by Tuesday afternoon.
616 AM MDT Mon Aug 26 2024 KEY MESSAGES: - Cooler conditions with showers & isolated thunderstorms today. Locally heavier amounts are certainty possible with today's activity as well as the upper low pulls in more atmospheric moisture. Today's showers and thunderstorms will come to an end from west to east this evening through the overnight hours as the upper low moves into the Dakotas.
A mostly dry cold front will push across the region late afternoon and winds will gust 25 to 35 mph widespread, while higher terrain has a 30-40% chance of wind gusts in excess of 35 mph, especially in the Glacier Park Region. Behind this cold front will be the seasons coolest temperatures yet.
The trend towards a warmer and more humid air mass continues today, with high temperatures in the mid 80s to lower 90s away from precipitation. ------------------------------------------------------------------- Upper ridging will slowly shift east and begin to flatten on Tuesday as Midwest troughing lifts and fills.
604 AM CDT Mon Aug 26 2024 (Today) The dome of high pressure continues to be the main driver of the local weather forecast today. Under sunny skies it will feel quite warm outside today with forecast highs in the low to mid 90s in our eastern zones to upper 90s to low 100s along and west of I-65.
437 PM EDT Mon Aug 26 2024 An upper low will exit across the Maritimes tonight. High pressure will cross the region Tuesday.
1252 PM CDT Mon Aug 26 2024 As of 9:30 AM CDT, temperatures have already reached the mid-80s under mid-to-upper level cloud cover that continues to rotate around an area of low pressure along the Texas coastline. High temps today may see similar persistence numbers or perhaps a degree or two cooler with more cloudiness arriving later today. /24/ (Tuesday Night through Monday) Meanwhile, the upper ridge is over IA/MO at it's peak of 599/600dam. Little change in our overall pattern aside from the slight chances as the weakness lingers as an inverted trough keeping the Gulf open to our region for sea breeze activity.
Upper level ridging will generally promote another quiet night weather-wise, featuring mostly clear skies, light winds, and warm overnight lows in the 70s. Additionally, may see partly- mostly cloudy conditions build in overnight for portions for SE OK as a TX upper low increasingly influences the region.
242 PM EDT Mon Aug 26 2024 High pressure will keep conditions mainly dry into the middle of this week as it becomes hot and humid. Tonight, mostly clear skies will again support temperatures in the 60s, but a few degrees warmer than last night. This will make highs a touch warmer than today, with much of the area east of the Blue Ridge seeing mid 90s, and heat index values close to 100F in the Roanoke area. With additional short wave energy rounding the upper ridge centered to our west, we will see another, slightly better chance for showers and thunderstorms tomorrow afternoon, generally in the Shenandoah Valley once again.
The weak ridging pattern is still expected to maintain the easterly flow, but an area of some confluence could set up somewhere in the region. An Atlantic ridge stretching into the southeastern United States will begin slipping southward across Florida by mid week.
245 PM EDT Mon Aug 26 2024 (This afternoon through Tuesday) High pressure will continue across the CWA through the period. The ridge axis shifts slightly southward tomorrow.
136 PM MDT Mon Aug 26 2024 A mostly dry cold front is set to move across the Northern Rockies Tuesday afternoon and evening. Expect widespread west-southwest wind gusts of 25-35 mph, with the higher terrain, especially Glacier Park, having a >80% chance of gusts exceeding 35 mph. Scattered showers and isolated thunderstorms will develop along the cold front, with precipitation generally focusing north of the Interstate 90 corridor.
1207 PM CDT Mon Aug 26 2024 (Tonight through Tuesday night) Key Message: - Medium to high chances (30-70%) of showers and thunderstorms today over the Coastal Plains, slightly decreasing to generally medium on Tuesday - Max heat index values generally 100-105 today, increasing to 103-108 Tuesday, will lead to a minor to moderate risk of heat- related impacts A mid to upper level low currently located over the northwestern Gulf of Mexico is currently producing a few showers and thunderstorms over the Upper Texas Coast and the open waters. This low will move northwest into the Victoria Crossroads region through the day today, making its way into the Hill Country tonight. Rain chances decrease to low (20-30%) tonight as the low moves northward and South Texas loses a major lifting mechanism.
(This evening through Tuesday Night) Warmer than normal conditions will continue across the Four State region into the middle of the week. This southerly flow will become more meridional as the upper low weakens and meanders west across central Texas, allowing drier air and higher temperatures (especially across eastern zones) by tomorrow afternoon.
240 PM EDT Mon Aug 26 2024 High pressure will shift offshore tonight and sit off the East Coast through mid-week as a strong upper level ridge builds in from the west. Aloft, the anticyclone will very slowly migrate eastward into the mid-MS Valley through tonight as the cyclone over the Northeast US slides SSE. A s/w swinging trough the base of the trough will clip the mid-Atlantic coast this eve/tonight. The anomalous mid-level ridge will inch further east Tuesday, promoting nly flow over central NC. Low-level thicknesses will continue to rise Tuesday, and given some organized swly sfc flow, temps will should warm into the lower to mid 90s. Overnight lows will be warmer as well, dipping into the upper 60s/lower 70s.
An upper trough crossing the area has triggered a N-S oriented line of showers and thunderstorms over northeastern WY already this afternoon. The trough will push off to the east of the forecast area late this evening, with subsidence taking over and precip ending.
1207 PM CDT Mon Aug 26 2024 (Today through Tuesday) High pressure will remain centered near the Appalachians through Tuesday. Continued low level thicknesses increase today and Tuesday, which should allow temperatures to be warmer over the next two days.
331 PM EDT Mon Aug 26 2024 Hot conditions are expected for the region this week as high pressure controls our sensible weather. A mid level ridge will continue to nudge northeast into the Ohio Valley tonight. It will be warm with lows ranging from the mid 60s to the lower 70s. Mid level ridge should predominate on Tuesday. With dewpoints in the mid 60s to the lower 70s, this will push heat index values to around 100. Records for Tuesday, August 27 CVG 99 (1948) CMH 100 (1948) DAY 97 (1899, 1948) Forecast Highs CVG 97 CMH 98 DAY 96 For Tuesday night, mid level ridge remains over the Ohio Valley. Models generally keep any embedded energy on the periphery of this ridge to the north. It will continue to be warm with lows in the lower 70s.
A cooler and more stable airmass will remain in place into midweek.
The trend towards a warmer and more humid air mass continues today, with high temperatures in the mid 80s to lower 90s away from precipitation.
Dry weather and dry air once again tonight and Tuesday with high pressure and ridging across the region. Temperatures warm another 1 to 3 degF as 850mb temperatures warm beneath the upper ridge. Discussion: The upper-level 596 dam 500mb upper-level ridge will gradually shift eastward across the Ohio Valley on Tuesday with continues northerly upper-level flow and subsidence across the Tennessee Valley and Southern Appalachians. Daily Record High Maximum Temperatures Date Chattanooga Knoxville Tri-Cities Oak Ridge 08-27 102(1936) 101(1943) 95(2016) 97(2007) (Tuesday night through next Monday) Key Messages: 1.
Warm and muggy this morning with 9AM temperatures observed in the low to mid 80s across much of east central Florida. Weak high pressure centered off of the mid Atlc coast will continue to promote a light E/ESE wind flow across the local waters. A persistent pattern continues with light onshore (E/ESE) flow 6-12 kts thru the period as the ridge axis remains north of the local waters.
1202 PM CDT Mon Aug 26 2024 (Rest of Today) A strong mid/upper ridge will become centered over the Mid South and Ohio/Tennessee Valleys today as the hot/dry pattern continues across the region. Extremely light winds under this ridge will prevent any elevated fire weather concerns despite RHs flirting with critical values.
With high pressure in control, strong subsidence is creating clear conditions save for a few very shallow Cu.
- More appreciable cold frontal passage late Thu, with showers and thunderstorms likely. Central Iowa is still currently entrenched in the upper level and thermal ridge with little in the way of cloud cover and 19z heat indices from 100 to as high as 112 at Marshalltown so no change to the current Excessive Heat Warning. MLCAPEs may still reach 1500-2000 J/kg with QG forcing from the approaching northern Plains upper level trough also providing additional support.
351 PM EDT Mon Aug 26 2024 Scattered showers and isolated thunderstorms are expected until sunset, mainly across the higher terrain of central and southern Vermont and the Adirondacks.
-Muggy conditions combined with temperatures in the low 90s will produce peak heat index values between 100-106 degrees. High pressure builds aloft, extending southeastward into Florida. Surface ridging builds along the southeast coast with its axis remaining north of the state. High temperatures remain mostly in the low 90s with peak heat index values between 100-106 degrees.
1238 PM CDT Mon Aug 26 2024 (Today through Tuesday Night) A robust H500 ridge will remain centered just north of the state through tonight, easily the most dominant mid/upper level feature across the CONUS. Regionally, a weak H500 disturbance will move inland along the TX coast along the periphery of the high. While sfc ridging will remain anchored across the SE US, the H500 ridge will slowly drift toward the Ohio/Tennessee Valleys near the end of the period.
1230 PM CDT Mon Aug 26 2024 The heat will build over the next few days as upper level high pressure moves over the region. Little or no rain expected until at least the end of the week when a cold front moves into the region.
------------------------------------------------------------------- Satellite shows distinct pinwheel of upper low over northern WY tracking NE. Strong upper dynamics associated with the system will spread east in front of the trough creating significant ascent over the area. The precipitation and thunderstorms will come to an end from west to east later this evening and through the overnight hours as the upper low moves into the Dakotas.
As noted on GOES 16 IR and WV channels, an upper level low of tropical origin is moving inland over the middle Texas coast and will eventually parallel I-10 as it moves through South Central Texas today through tonight. Temperatures will remain mild overnight, but cooler than normal during the day, mainly due to increased cloud coverage from storms and rain cooled air where the rain falls.
Thus, the highest rain chances are near the Emerald and Nature Coasts for Tuesday afternoon. Highs will be in the low to mid-90s.
Max temperatures will continue to run in the low to mid 90s with peak heat indices 103 to 110 (highest values over SW Florida) this and Tuesday afternoon.
213 PM CDT Mon Aug 26 2024 High pressure is the primary meteorological feature driving the weather over the next couple of days, with attendant subsidence through the 500mb level.
132 PM PDT Mon Aug 26 2024 Warmer and drier conditions this week with cooler temperatures later this weekend, and periods of breezy winds. Temperature observations are currently trending approximately 5 to 10 degrees warmer than this time yesterday afternoon, in the 80s to low 90s in the Valley and lower foothills, and 60s to 80s in the upper foothills and mountains, valid at 130 PM PDT.
1251 PM CDT Mon Aug 26 2024 (Today through Tuesday night) A similar day today as we had yesterday, as a ridge of high pressure continues to slowly skirt east. Overall, temperatures will be a bit cooler (by a few degrees), but surface moisture will be a bit higher and mid level lapse rates will be weaker. Upper flow will transition more zonal on Tuesday just north of the Panhandles, as the high attempts to.
Dry and quiet weather conditions through the early week as a slight ridging builds over the state. Warmer temperatures return throughout the week with increasing probability of showers and thunderstorms for the upcoming weekend. Tomorrow, clear skies across the state as an upper level ridge continues to build across the southwest, warming high temperatures back into the 80s to low 90s.
(This evening through Tuesday Night) Northern periphery of the inverted mid level trof has made it to the Texas coast providing a much needed break from the heat and some rainfall.
143 PM MDT Mon Aug 26 2024 KEY MESSAGES: - Upper level low that is bringing light rain showers south and east of the Missouri River will begin to push off to our east later tonight.
(This evening through Tuesday) An upper level low is moving onshore the middle Texas coast this afternoon. The aforementioned upper level low will track northwest toward West Central Texas on Tuesday. The lower heights aloft along with an increase in cloud cover should result in slightly cooler temperatures.
A mid level low centered across South Central Texas will slowly continue to track west-northwest through Tuesday, placing S TX on the more favorable east side of the low. The upper level low is progged to meander across the region. The low pressure system will continue to provide mid/upper level support for showers and thunderstorms through Tuesday. The combination of the low with deep moisture (PWATs 1. The highest (50-60%)chance will be across the Victoria Crossroads due to the proximity to the upper low and deeper moisture. The low pressure aloft has led to cooler mid level temperatures.
An upper ridge will move in from the west today and provide the region with dry conditions, light winds, and warmer temperatures.
748 PM EDT Mon Aug 26 2024 Dry high pressure will remain across the region through the middle of the week and maintain hot and humid conditions.
726 PM EDT Mon Aug 26 2024 High pressure will keep conditions mainly dry into the middle of this week as it becomes hot and humid. Tonight, mostly clear skies will again support temperatures in the 60s, but a few degrees warmer than last night. This will make highs a touch warmer than today, with much of the area east of the Blue Ridge seeing mid 90s, and heat index values close to 100F in the Roanoke area. With additional short wave energy rounding the upper ridge centered to our west, we will see another, slightly better chance for showers and thunderstorms tomorrow afternoon, generally in the Shenandoah Valley once again.
Temperatures to the north of I-40 were running 2-3 degrees warmer than 24 hours ago, while to the south, little change was noted. Overall, expect a slightly warmer night across the board.
610 PM CDT Mon Aug 26 2024 (This evening through Tuesday Night) Northern periphery of the inverted mid level trof has made it to the Texas coast providing a much needed break from the heat and some rainfall.
Temperatures in the upper 70s to near 80, expected to fall into the lower/mid 70s by daybreak.
1032 PM EDT Mon Aug 26 2024 Scattered showers and isolated thunderstorms are expected until sunset, mainly across the higher terrain of central and southern Vermont and the Adirondacks.
1030 PM EDT Mon Aug 26 2024 Dry high pressure will remain across the region through the middle of the week and maintain hot and humid conditions.
721 PM EDT Mon Aug 26 2024 An upper low will exit across the Maritimes tonight. High pressure will cross the region Tuesday.
532 PM EDT Mon Aug 26 2024 Dry high pressure will remain across the region through the middle of the week and maintain hot and humid conditions.
/26/ (This evening through Tuesday Night) Warmer than normal conditions will continue across the Four State region into the middle of the week. This southerly flow will become more meridional as the upper low weakens and meanders west across central Texas, allowing drier air and higher temperatures (especially across eastern zones) by tomorrow afternoon.
1015 PM EDT Mon Aug 26 2024 Hot conditions are expected for the region this week as high pressure controls our sensible weather. Mid level ridge should predominate on Tuesday. With dewpoints in the mid 60s to the lower 70s, this will push heat index values to around 100. Records for Tuesday, August 27 CVG 99 (1948) CMH 100 (1948) DAY 97 (1899, 1948) Forecast Highs CVG 97 CMH 98 DAY 96 For Tuesday night, mid level ridge remains over the Ohio Valley. Models generally keep any embedded energy on the periphery of this ridge to the north. It will continue to be warm with lows in the lower 70s.
646 PM EDT Mon Aug 26 2024 Scattered showers and isolated thunderstorms are expected until sunset, mainly across the higher terrain of central and southern Vermont and the Adirondacks.
(Tonight) High pressure layered across the mid/southern Atlantic states continues to maintain quiet wx conditions across the mid TN Valley this Mon evening. Current temps have fallen mainly into the upper 70s/lower 80s and with dew pts in the upper 50s/mid 60s, lows into early Tue should have little trouble falling into the lower/mid 60s.
616 PM EDT Mon Aug 26 2024 An upper low will exit across the Maritimes tonight. High pressure will cross the region Tuesday.
952 PM EDT Mon Aug 26 2024 An upper low will exit across the Maritimes tonight. High pressure will cross the region Tuesday.
655 PM CDT Mon Aug 26 2024 (This evening through Tuesday Night) Warmer than normal conditions will continue across the Four State region into the middle of the week. This southerly flow will become more meridional as the upper low weakens and meanders west across central Texas, allowing drier air and higher temperatures (especially across eastern zones) by tomorrow afternoon.
Gentle to moderate easterly breezes prevail with the Atlantic ridge to our north still holding onto our sensible weather pattern. From synopsis, an Atlantic ridge stretching into the southeastern United States will begin slipping southward across Florida by mid week.
743 PM EDT Mon Aug 26 2024 Scattered showers and isolated thunderstorms are expected until sunset, mainly across the higher terrain of central and southern Vermont and the Adirondacks.
739 PM EDT Mon Aug 26 2024 Hot conditions are expected for the region this week as high pressure controls our sensible weather. A mid level ridge will continue to nudge northeast into the Ohio Valley tonight. It will be warm with lows ranging from the mid 60s to the lower 70s. Mid level ridge should predominate on Tuesday. With dewpoints in the mid 60s to the lower 70s, this will push heat index values to around 100. Records for Tuesday, August 27 CVG 99 (1948) CMH 100 (1948) DAY 97 (1899, 1948) Forecast Highs CVG 97 CMH 98 DAY 96 For Tuesday night, mid level ridge remains over the Ohio Valley. Models generally keep any embedded energy on the periphery of this ridge to the north. It will continue to be warm with lows in the lower 70s.
(This afternoon through Tuesday) High pressure will continue across the CWA through the period. The ridge axis shifts slightly southward tomorrow.
The incoming upper trough Tuesday and associated surface cold front look even stronger in latest models.
658 PM CDT Mon Aug 26 2024 High pressure is the primary meteorological feature driving the weather over the next couple of days, with attendant subsidence through the 500mb level.
A weak upper low will move northwest to near the southern border of Sutton County by late this afternoon and evening, and then will drift a bit west tonight. Expect the highest rain chances and coverage to be over the southern part of our area along the I-10 corridor. With an increase in cloud cover and lower heights aloft, temperatures today will be cooler than yesterday. How much cooler will range from a few degrees in the Big Country, to 5-8 degrees in the southern half of our area.
358 AM CDT Tue Aug 27 2024 - It will be cooler today, but the heat index may push close to 100 degrees in far southeast NE and southwest IA.
Early morning surface analysis had a 1019mb ridge extending southwest from the southern Appalachians back across our CWA. Together these features will contribute to another warmer than normal day across our region and perhaps a record high for the date at Greenwood. Tonight temperatures will bottom out a little warmer in the northeast with morning lows in the lower 70s expected areawide.
- A stronger cold front pushes through the area Wednesday night, bringing precipitation chances (40-50%) with its passage and cooler temperatures in its wake. High temperatures today remain in the low to middle 80s, with weak cold advection continuing into this afternoon.
Upper low will continue to push east-northeast through the night, with clearing skies in its wake. ------------------------------------------------------------------- Satellite shows distinct pinwheel of upper low over northern WY tracking NE. Strong upper dynamics associated with the system will spread east in front of the trough creating significant ascent over the area. The precipitation and thunderstorms will come to an end from west to east later this evening and through the overnight hours as the upper low moves into the Dakotas. BT An upper level closed low is forecast to move across northern MT early Wednesday morning. This will bring an associated cold front through the region beginning Wednesday morning for the west, tracking into SE MT into the evening.
(Today through Wednesday Night) The center of the H500 ridge will meander toward the Ohio/Tennessee Valleys through Wednesday with sfc ridging remaining across the SE US.
Currently - A messy Atlantic ridge stretches westward into the southeastern United States and is responsible for gentle northeast to easterly breezes across the Keys and surrounding waters. In addition, the overall setup is a split lower level ridge across the Bahamas due to a mid latitude trough orphaning a weak upper level low off the southeast coast. Through the remainder of the week the ridge axis is expected to lift slightly northward back into the southeast. The old cut off upper level low will remain off the southeast coast and may give an assist to convective development. An Atlantic ridge stretching across the southeastern United States will shift southward through mid week. Later in the week winds may pick up slightly as the ridge retreats northward and subtle troughing moves through the northwestern Caribbean Sea.
329 AM EDT Tue Aug 27 2024 High pressure will extend across the region through much of this week. Today: Aloft, the center of the large anticyclone will shift eastward into the Ohio Valley and the associated ridge will continue to build in across the Southeast. At the surface, the center of the high will increasingly become centered over the western Atlantic which will gradually promote a more onshore flow along the coast of the forecast area into the afternoon. With the influence of the ridging aloft, hi-res model solutions are consistent in showing less convection this afternoon compared to the last few days. Temperatures are forecast begin a warming trend, with highs reaching the low 90s away from the immediate coast. Tonight: Overall, it should be a quiet night with high pressure in control.
A cold front will bring another round of showers and isolated thunder tonight into Wednesday, with seasonably cool and dry conditions following for the end of the work week.