Aikyam-Lab/Synoptic-Bench huggingface dataset:
300 PM CDT Wed Sep 4 2019 High pressure over the area this afternoon is keeping skies mostly clear, though a few clouds are trying to skirt the far northwest corner of Alabama associated with a dying upper-level front. The main front will not arrive until late tonight over our Tennessee counties, and bring cooler, drier air south into northern Alabama early Thursday morning. Again, the dry cold front will move south across the Tennessee Valley overnight tonight into Thursday morning, bringing cooler, drier air into the Tennessee Valley. Winds will ramp down Thursday evening as the pressure gradient over the area weakens with the trough pushing Dorian away to the northeast.
/issued 1122 AM CDT Wed Sep 4 2019/ A cold front currently located over Southeast Missouri will begin to push into the Mid-South late this afternoon into the evening hours. short term models are in good agreement that a cold front seen draped along I-70 to the north will pass through the Midsouth late today. Unfortunately FROPA will take place after peak heating for most so expect afternoon highs to creep back into the low to mid 90s and heat indices near 100F.
1256 PM CDT Wed Sep 4 2019 /Remainder of This Afternoon through Thursday/ North Texas remains under the influence of a dominating mid and upper level ridge resulting in hot and dry weather across the region. Water vapor imagery this afternoon shows a large area of drying to the north of the 250 mb ridge axis which is centered over landfalling Tropical Storm Fernand. Overnight lows will bottom out in the lower 70s outside of urban areas with mid/upper 70s in the cities. More of the same is expected on Thursday although mid level heights associated with the ridge will increase across North Texas.
427 PM EDT Wed Sep 4 2019 A cold front was located over the northern portion of the forecast area at mid afternoon, moving southeast. The front will drop south of KY tonight, and high pressure over the Great Lakes will supply a cooler and drier air mass behind the cold front. The pressure gradient between Dorian and the high will keep a steady northerly flow going over our area through Thursday, promoting the advection of the more comfortable air mass southward into our area.
1223 PM CDT Wed Sep 4 2019 Latest surface analysis shows the wind shift associated with the cold front near I-70. Guidance has the the high over the Upper Midwest drifting east into the Great Lakes region overnight, with the ridge axis extending southwest from central Illinois into south central Missouri. Dry air should remain in place on Thursday though high temperatures will likely be a few degrees warmer than today, particularly in central Missouri where the wind is expected to turn back to the south during the afternoon.
156 PM CDT Wed Sep 4 2019 Another warm, dry day is going into the books today across Southeast New Mexico and West Texas, with similar conditions expected through the end of the week as an upper ridge maintains its hold over the region. Temperatures today will top out in the lower to middle 90s for most, with 80s across higher terrain, and lower 100s through portions of the Rio Grande Valley.
/issued 452 AM CDT Wed Sep 4 2019/ (Today and Tonight) Rain chances, for the next 24 hours, are near zero; however, models indicate the upper ridge may continue to weaken slightly, and this may produce slightly cooler temperatures. Model MOS guidance data indicate highs today and lows tonight will still be warmer than those usual for early September; but, they'll likely be closer to our usual temperatures.
318 PM EDT Wed Sep 4 2019 A cold front will push southeast across Pennsylvania later today. High pressure will then build into the area for the rest of the week. The cold front as of about 2PM extended from around BGM down just west of UNV down to near LBE. Temps will be pleasantly cool and about 5-6 deg below normal with afternoon maxes in the upper 60s across the high terrain of the north and west, and low to mid 70s throughout the Central and SE valleys.
however the low-levels of the atmosphere are fairly well capped by a strong inversion. The question mark for any late afternoon development will be whether we can get enough convergence along a cold front moving southeast across the region. having the cold front clear through enough of the region to have those clouds form more south of our KY/TN border overnight.
316 PM CDT Wed Sep 4 2019 A fairly quiet weather pattern is currently in place over the lower Missouri Valley this afternoon as a ridge of high pressure continues to build southward with time.
A lower tropospheric ridge axis stretches west into the Caribbean, lending to confluent and moist west-southwesterly flow across the Florida Keys.
With the mid level ridge center residing overhead, conditions are not favorable for any convection along said front. /Issued 326 AM CDT Wed Sep 4 2019/ Hot and dry weather will be the rule the remainder of the week and into the weekend as upper ridging holds. Expect highs back into the lower/mid 90s with heat index values around 100F in a few spots.
Also made a slight adjustment to the high temperatures based on this. The center of the high pressure area aloft over the western U. A short wave through aloft moves eastward through southwest Canada and through the apex of the upper ridge today with a series of waves moving along the U.
Issued by National Weather Service Lake Charles LA 229 PM CDT Wed Sep 4 2019 Light northerly flow and increasing subsidence across the area has allowed for plenty of sunshine and temperatures to rise to near forecast maximums in the mid to upper 90s inland to the lower 90s along the immediate coast. The higher pressure dome across the the mid section of the country was ridging southeast into the area. High pressure will remain fixed across again on Thursday and create dangerous heat conditions as heat indices area expected to rise well above 108 degrees most areas beginning late Thursday morning and continuing into the afternoon before easing around 6 pm tomorrow.
327 PM CDT Wed Sep 4 2019 A ridge is dominating the upper levels for the western two thirds of the CONUS while a trough is positioned over Hudson Bay into the eastern Great Lakes. In Kansas, afternoon temperatures ranged from the lower 80s to the lower 90s with few clouds overhead. Highlights: 1)Highs primarily in the 90s 2)Slight chances of storms on Sat eve The persistent ridge in place keeps the weather benign around Kansas. This brought relatively cooler air across the Sunflower State by a few degrees compared to yesterday.
Issued by National Weather Service North Platte NE 1057 AM MDT Wed Sep 4 2019 Water vapor shows upper ridge axis building from the Northern Rockies into the Northern Plains, with upper low over southern BC. Very warm and dry conditions expected today with thermal ridge peaking in our western zones. Highs close to the mid 90s expected in northeast WY and parts of far western SD, and a tad cooler east. Breezy southerly winds expected on the SD plains, with winds turning southwest/west across northeast WY behind surface trof. Slightly cooler temps expected Thursday with northerly winds behind surface trof.
/Tonight through Thursday night/ The upper level ridge will remain centered over western Kansas and the TX/OK Panhandles and will continue to extend into the Four State Region over the next couple of days. With the ridge staying in place, high temperatures will continue to rise in the upper 90s with several locations getting into the lower 100s on Thursday. Dewpoints will mix out into the lower to mid 60s, so heat index values will range from 100 to 105 degrees, which is just below Heat Advisory criteria.
Latest analysis places a cold front just south of the OH river at midday.
1257 PM CDT Wed Sep 4 2019 Corrected the High Temperatures for Today.
Temperatures have remained slightly cooler than expected in NW Minnesota and NE North Dakota. Highs in lakes country will top out in the upper 60s with ND highs in the lower to mid 70s. Some of the cooler locations this morning could see the upper 30s before we warm into the upper 60s to lower 70s this afternoon. Instability will be limited and with cooler air at the surface, will remain trapped within the rather small EML above 750 mb.
304 PM CDT Wed Sep 4 2019 A cold front is located just north of the Mid-South at this time. Temperatures have climbed into the lower to mid 90s this afternoon south of the front.
1146 AM EDT Wed Sep 4 2019 A cold front will push southeast across Pennsylvania today. High pressure will then build into the area for the rest of the week. The cold front just went through BFD. Temps will climb into the low 70s across the NW Mountains, and reach around 80 near the I-99 corridor, and the mid to upper 80s throughout the Susq Valley. Temps will be pleasantly cool and about 5-6 deg F below normal with afternoon maxes in the upper 60s acrs the high terrain of the north and west, and low to mid 70s throughout the Central and SE valleys. Mainly dry weather expected to continue on Fri under a ridge of high pressure to the NW of Hurricane Dorian that will be east of the Delmarva Coast.
127 PM EDT Wed Sep 4 2019 A cold front will move across the region this morning.
A weak cold front across the KS/OK Panhandle border will drift to the north as we go into the evening hours. after high temperatures in the lower to mid 90s, temperatures tonight will drop under mostly clear skies.
Meanwhile, a trailing cold front will advance through the northern Plains into our area by Thursday afternoon. The cold front will progress through the area Thursday afternoon and evening with a cooler and drier air mass overspreading the region from the north.
242 PM CDT Wed Sep 4 2019 The center of a strong upper level ridge will remain nearly stationary for the next several days.
The good mixing combined with an upper ridge nudging fartehr north into the plains will push temps to the highest point of the period.
326 PM EDT Wed Sep 4 2019 A cold front moving through northern New England into early this evening will result in thunderstorms.
Temperatures have been suppressed due to the expansive clouds, but increasing sunshine should still manage to push some areas into the low 70s yet by late afternoon. A decent setup for some river valley fog tonight with the high sitting overhead, providing mostly clear skies and rather light winds throughout the lowest 5000 feet or so.
High pressure will drift into the region overnight, coausing some patchy fog to develop. High pressure is expected to move over the region tonight.
Bigelbach PREVIOUS DISCUSSION Warm and dry conditions are expected for today, though expect a cold frontal passage to take place during the late morning and early afternoon hours.
338 PM EDT Wed Sep 4 2019 High pressure will push dry air into NY and PA tonight, clearing skies. High pressure gets squeezed out by Dorian to the southeast and multiple waves from the northwest.
Temperatures will range from the lower 90s to near 100 on Thursday.
We will stay under the influence of an upper air high pressure over eastern Colorado and with southwest winds lows fall into the mid to upper 60s.
Forecast Confidence is medium to high: High pressure will keep the weather quiet into Thursday afternoon. The clearing skies and lighter winds will allow temps to fall into the low 50s most places. Low pressure will approach during the day Thursday, moving through Wisconsin overnight. Went with a chance for showers and a few storms as the low moves through, mainly during the later evening and overnight hours when better low level moisture arrives. It will likely stay on the milder side Thursday night as the low moves through.
457 PM EDT Wed Sep 4 2019 A cold front will push southeast across Pennsylvania later today. High pressure will then build into the area for the rest of the week. Radar loop at 21Z is showing widely scattered convection across southeast Pa in moderately unstable air mass ahead of cold front. High pressure building southeast from the Grt Lks will supply the region with fair and cooler conditions tonight. Temps will be pleasantly cool and about 5-6 deg below normal with afternoon maxes in the upper 60s across the high terrain of the north and west, and low to mid 70s throughout the Central and SE valleys.
On Thursday, quiet weather is expected as an upper level ridge strengthens to the west.
1257 PM CDT Wed Sep 4 2019 The cold front that moved into northeast KS yesterday continued to progress southward through east-central KS overnight. Aloft, an expansive mid- level ridge stretches from the Four Corners region eastward over much of KS, OK and northern TX, with troughing over the Great Lakes. Temperatures should also be noticeably cooler than yesterday with highs topping out in the low 80s for much of the forecast area, but a touch warmer for locations in central KS. The surface boundary located south of the area will begin to lift back northward as a warm front tomorrow as an area of low pressure advances across the Dakotas and into Minnesota. Return flow will allow for the advection of warmer air and higher dewpoints into the area.
1229 PM CDT Wed Sep 4 2019 Water vapor imagery was showing an upper level high pressure dome encompassing the western half of the CONUS with attendant ridge extending well into western Canada. At the surface, high pressure was centered over SD with the leading edge of a cold front extending roughly from southern IL to northwest KS. Did note though a cold front making a push through the CWA Thursday night. On Thursday, much warmer with highs topping out in the low 90s.
1215 PM CDT Wed Sep 4 2019 Early this morning a cold front has dropped through the forecast area ushering much cooler and drier air. Otherwise high pressure will build into the area today making for pleasant early September conditions with highs in the mid 70s to lower 80s. Thursday, high pressure will shift off to the northeast and warm air advection will help temperatures rise into the lower 80s east to upper 80s west. Thursday night a upper level trough moving through the western Great Lakes will forecast a weak front through the CWA.
320 PM CDT Wed Sep 4 2019 Quiet conditions are expected over the next 36 hours as a short- wave trough departs to the east southeast, allowing summer-like temperatures and humidity to return for Thursday.
With the weak, and mostly dry, frontal boundary expected to move through the area today/tonight some of the high resolution models are trying to generate some very light showers along the Cumberland Plateau.
A low pressure system is located in southern Saskatchewan and is expected to move to the southeast this evening and into tonight.
The "cooler" and drier airmass resided about 100 miles or more north of the boundary, especially from central Missouri and north where dewpoints were in the middle 60s and temps in the low to middle 80s.
Cloud cover will make tonight warmer than last night. The main story will be showers and thunderstorms late Thursday, and especially Thursday night, as a Pacific upper trough moves past just north of our CWA.
156 PM MDT Wed Sep 4 2019 Mean troughing will continue into central Canada, supporting a continued southward bias to the jet stream and associated storm track. This will support a local active pattern with passing low pressure troughs ejecting out of the PAC NW trough. Passing impulse will support a trough through the region tonight, with dry conds expected most places. Slightly cooler conds expected Thur, although still warm and dry. Attention then turns toward a deeper/stronger trough expected to push into the northern Rockies.
Hot and dry weather can be expected tomorrow across all of Southeast Texas as high pressure at the surface and aloft builds across the area. High temperatures could end up a degree or two warmer that what the area has seen today, but enough mixing is anticipated and that should keep heat index values below advisory levels.
A lower tropospheric ridge axis stretches west into the Caribbean, lending to confluent and moist west-southwesterly flow across the Straits of Florida. The forecast calls for the lower tropospheric ridge to slowly lift northward, battling the orphaned cyclonic envelope from Dorian's southwestern flank. Weakly confluent southwesterlies will resume tonight as the ridge presses into the cyclonic curvature to our north.
323 PM EDT Wed Sep 4 2019 High pressure will push dry air into NY and PA tonight, clearing skies. High pressure gets squeezed out by Dorian to the southeast and multiple waves from the northwest.
402 PM CDT Wed Sep 4 2019 Cool and calm conditions this afternoon as high pressure sits over the area. Temperatures will be warmer Thursday under strong warm advection, with highs in the mid to upper 80-s possible across western minnesota, and highs in the 80s possible up to I-94.
839 PM EDT Wed Sep 4 2019 High pressure will build southeast into the region late this week, as Hurricane Dorian tracks off the Mid Atlantic coast.
640 PM EDT Wed Sep 4 2019 High pressure will push dry air into NY and PA tonight, clearing skies. Skies turn clear to partly cloudy overnight with high pressure building in. A cooler and drier airmass, as well as more breaks in the clouds, will help temperatures drop back quite a bit tonight, generally into the low/mid 50s across the lower elevations and river valleys. High pressure gets squeezed out by Dorian to the southeast and multiple waves from the northwest.
Locations outside of this area, a weak cold frontal passage will result in a wind shift from southwest to northwest. On Thursday, quiet weather is expected as an upper level ridge strengthens to the west.
917 PM CDT Wed Sep 4 2019 Cold front passage still on track to pass through the area late tonight into the early morning hours. No precip expected with the frontal passage however, slightly cooler temps are in store tomorrow morning. Again, the dry cold front will move south across the Tennessee Valley overnight tonight into Thursday morning, bringing cooler, drier air into the Tennessee Valley. Winds will ramp down Thursday evening as the pressure gradient over the area weakens with the trough pushing Dorian away to the northeast.
856 PM EDT Wed Sep 4 2019 A cold front moving through northern New England into early this evening will result in thunderstorms.
329 PM MDT Wed Sep 4 2019 Moisture will continue to wrap around the north and western periphery of the upper level high, feeding afternoon convection. Otherwise, cloud cover will remain overnight, keeping tonight's lows slightly warmer.
516 PM MDT Wed Sep 4 2019 Mean troughing will continue into central Canada, supporting a continued southward bias to the jet stream and associated storm track. This will support a local active pattern with passing low pressure troughs ejecting out of the PAC NW trough. Passing impulse will support a trough through the region tonight, with dry conds expected most places. Slightly cooler conds expected Thur, although still warm and dry. Attention then turns toward a deeper/stronger trough expected to push into the northern Rockies.
High pressure over the area this afternoon is keeping skies mostly clear, though a few clouds are trying to skirt the far northwest corner of Alabama associated with a dying upper-level front. The main front will not arrive until late tonight over our Tennessee counties, and bring cooler, drier air south into northern Alabama early Thursday morning. Again, the dry cold front will move south across the Tennessee Valley overnight tonight into Thursday morning, bringing cooler, drier air into the Tennessee Valley. Winds will ramp down Thursday evening as the pressure gradient over the area weakens with the trough pushing Dorian away to the northeast.
451 PM MDT Wed Sep 4 2019 00Z TAF CYCLE Upper ridge axis extending from west to east over southern CO. Weak surface lee trough developing aft 05/06Z.
Increasing thunderstorm coverage expected the rest of today and Thursday as an upper low off the CA coast gradually moves inland, and monsoonal moisture drifts northward. Another round of afternoon convection is expected near the Sierra Cascade range by Thursday afternoon as the upper low shifts to the northeast towards the PacNW.
807 PM MDT Wed Sep 4 2019 Temperatures have been running much warmer than most of the guidance, with the exception of the high-res models which were somewhat in the ballpark, so made adjustments to overnight lows based on those. Humidity values will once again be on the low side in the southwest part of our area (Petroleum County specifically), but winds should be less of an issue than today. Bigelbach PREVIOUS DISCUSSION Warm and dry conditions are expected for today, though expect a cold frontal passage to take place during the late morning and early afternoon hours.
/issued 156 PM CDT Wed Sep 4 2019/ Another warm, dry day is going into the books today across Southeast New Mexico and West Texas, with similar conditions expected through the end of the week as an upper ridge maintains its hold over the region. Temperatures today will top out in the lower to middle 90s for most, with 80s across higher terrain, and lower 100s through portions of the Rio Grande Valley.
632 PM CDT Wed Sep 4 2019 A fairly quiet weather pattern is currently in place over the lower Missouri Valley this afternoon as a ridge of high pressure continues to build southward with time.
837 PM EDT Wed Sep 4 2019 Forecast is on track with a weak upper trough and surface cold front moving through the region tonight. Chattanooga Airport, TN 71 91 64 92 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 70 89 64 89 / 0 10 0 0 Oak Ridge, TN 69 89 62 89 / 0 0 0 0 Tri Cities Airport, TN 66 87 61 84 / 10 10 0 0.
The good mixing combined with an upper ridge nudging farther north into the plains will push temps to the highest point of the period.
A moderate pressure gradient between Hurricane Dorian off the northeast coast of Florida and high pressure over the central U.
551 PM MDT Wed Sep 4 2019 Moisture will continue to wrap around the north and western periphery of the upper level high, feeding afternoon convection. Otherwise, cloud cover will remain overnight, keeping tonight's lows slightly warmer.
A low pressure system is located in southern Saskatchewan and is expected to move to the southeast this evening and into tonight. Some MVFR ceilings coming in behind the precipitation with a cold front tomorrow morning.
1020 PM EDT Wed Sep 4 2019 High pressure will push dry air into NY and PA tonight, clearing skies. Skies turn clear to partly cloudy overnight with high pressure building in. A cooler and drier airmass, as well as more breaks in the clouds, will help temperatures drop back quite a bit tonight, generally into the low/mid 50s across the lower elevations and river valleys. High pressure gets squeezed out by Dorian to the southeast and multiple waves from the northwest.
A cold front was dropping across the area this evening. North winds will bring cooler and drier air late tonight through Thursday.
Southerly flow will develop across the forecast area tonight between a departing high and approaching low pressure system. Warmer air and increasing moisture, plus a mid level short wave, will bring a chance for showers to the area starting around dawn on Thursday. Rain chances will increase throughout the day as the low and mid level short wave approach.
Over the local area, satellite depicting just a few fair weather cu overhead with strong high pressure aloft in place. Dry high pressure will hold over the near coastal waters through the remainder of the week with winds remaining light and somewhat variable.
Ridging at the surface and aloft continues to dominate the weather over the region this evening providing clear skies.
548 PM EDT Wed Sep 4 2019 A cold front moving through northern New England into early this evening will result in thunderstorms.
High pressure will drift into the region overnight, causing some patchy fog to develop. High pressure is expected to move over the region tonight.
/issued 242 PM CDT Wed Sep 4 2019/ The center of a strong upper level ridge will remain nearly stationary for the next several days.