Aikyam-Lab/Synoptic-Bench huggingface dataset:
224 PM CDT Mon Oct 2 2023 Key Messages - Gusty south winds persist this evening, in advance of an incoming wave and cold front progged to arrive tomorrow afternoon and evening.
High pressure is slowly inching off to the east. The 925 mb temps are around 21C today and will be similar tomorrow, if not a little warmer.
1155 AM EDT Mon Oct 2 2023 High pressure maintains dry and sunny weather through midweek, with river valley fog developing each night.
300 PM MDT Mon Oct 2 2023 Current water vapor imagery shows a stream of moisture pushing eastward into Colorado by an incoming deep trough. Showers/storms decrease across the high country and I-25 corridor mid-evening and exit the plains by midnight as the cold front moves through. It will be much cooler Tuesday in the post-frontal airmass with highs around 10-15 degrees cooler than Monday.
231 PM EDT Mon Oct 2 2023 Conditions will be quiet and temperatures will trend warmer through mid week.
Meanwhile, latest sfc analyses show broad high pressure now expanding across the E CONUS and into the northern portions of the peninsula. As cloud cover decreases, high temperatures should continue to climb into the low 90s Tuesday afternoon, with overall conditions becoming drier overnight.
252 PM EDT Mon Oct 2 2023 - More patchy fog overnight into Tuesday morning - Continued sunny with unseasonably warm temperatures Tuesday Visible satellite loop was showing clear skies across all of central Indiana under the influence of a ridge over high pressure from the eastern Great Lakes to the western Gulf of Mexico. This has resulted in well above normal temperatures in the lower to mid 80s over central Indiana. Stagnant synoptic pattern will remain in place as the high pressure ridge continues to provide subsidence and along with a very dry column, per BUFKIT soundings, will result in sunny skies and unseasonably warm temperatures again Tuesday.
1249 PM CDT Mon Oct 2 2023 (Today and tonight) Another hot and dry day expected today in advance of approaching western trough. As we go into this evening trough axis will swing through the four corners area into Colorado and New Mexico.
A round of rain is likely to end the week followed by cooler and breezy conditions with rain showers downwind of Lake Erie over the weekend.
South to southwest return flow around the high will draw in an airmass characterized by 850mb temperatures to 15-17C into mid- week. Subsidence has supported mostly clear skies and is also helping the daytime highs climb mostly into the low 80s. Temperatures still expected to land in the low to mid 80s.
(Now through Tuesday) The upper ridge axis just to our west from eastern Texas/western Louisiana northward to the lower Great Lakes region will begin to breakdown late in the near term. /22 (Tuesday Night through Monday) Dry conditions will persist through midweek as an upper-level ridge maintains its hold over our region.
319 PM EDT Mon Oct 2 2023 High pressure will remain in place over the eastern United States through mid-week.
228 PM EDT Mon Oct 2 2023 High pressure remains in control for much of the week as low pressure this morning shifts further offshore.
/24/ (Tuesday Night through Monday) Upper level ridging, which has been dominant from the Srn Plains into the Great Lakes Region since mid to late week last week, is expected to finally begin sliding off to the E Tuesday/Tuesday night, in response to longwave troughing currently over the Great Basin into Nrn Baja/NW Old MX, which will eject NE through the Rockies and into the High Plains. Additional troughing aloft will develop near/E of the Great Basin near the Four Corners Region in wake of the departing lead trough, with a SW flow aloft commencing over the Srn Plains Tuesday and across the Nrn half of the region Tuesday night.
The cold front finally shifts eastward across the CWA on Tuesday, thus shifting best precip chances to eastern portions of the area.
348 PM EDT Mon Oct 2 2023 High pressure prevails through most of the week, keeping the area mostly dry with temperatures near normal.
quiet and tranquil weather conditions are expected through Tuesday as high pressure dominates the weather pattern.
1005 AM MST Mon Oct 2 2023 Updated Aviation A longwave trough will allow cooler temperatures and occasional breezy conditions to continue across Arizona today. A delayed warming trend will occur the latter half of the week as a ridge builds over the western CONUS. A closed low pressure system centered over southern Nevada and far northwest Arizona this morning will continue to migrate eastward today. The low level cumulus clouds over the region currently are expected to clear out later this afternoon. With a relatively slow progression, the trough axis will be over Arizona later this evening allowing temperatures to be below normal again today. The cooler temperatures will last through early this week, with highs anticipated to be between 82-87 degrees across the lower deserts this afternoon.
1104 AM CDT Mon Oct 2 2023 (Rest of Today) A strong ridge of high pressure is centered directly over the Tennessee Valley today, promoting mostly clear and dry weather.
1050 AM PDT Mon Oct 2 2023 Cooler temperatures and precipitation are expected today before a warming and drying trend develops through the end of the week.
1057 AM CDT Mon Oct 2 2023 Hot and dry conditions will persist today as the upper level ridge remains over the MidSouth. We are still on track for a late week cold front to push through the region and bring a chance of rain along with much cooler temperatures. A large upper level high pressure system will remain over the Mississippi River Valley the next several days, resulting in continued summer-like high temperatures across the Midsouth.
Temperatures remain well below normal, but gradually warm throughout the week as high pressure builds. The potent trough that brought us active weather over the weekend is beginning to lift out of the area today. The 12z HREF paints the high terrain in this area with 20- 40% PoPs, quickly diminishing around sunset. Amounts will be light, but with snow levels around 9000 feet, could see a thin coat of snow on the highest peaks.
An upper level low pressure system over the Desert Southwest will lift northeast through the central Rockies today through this evening and into the Northern Rockies and Northern High Plains late tonight into Tuesday morning. Today low stratus and fog will be the rule across western and central North Dakota ahead of the approaching upper trough. Highs today will range from the low to mid 60s north and west, to the lower 80s over the southern James River Valley with lots of afternoon sunshine. As the upper level trough approaches, the forcing for ascent will be sufficient enough to initiate convection tonight over the western Dakotas. with the upper trough remaining to our west, scattered showers and (non-severe) thunderstorms will linger Tuesday morning.
243 PM EDT Mon Oct 2 2023 Dry high pressure will dominate the region through the week. A cold front approaches late week with much cooler weather late this weekend. This afternoon: Fair weather continues with high pressure ridging down into the area from the north. Temperatures continue to steadily warm into the upper 70s and lower 80s and should top out in the lower to mid 80s.
220 PM CDT Mon Oct 2 2023 A couple more days of very warm and dry weather will accompany a pronounced 500 mb ridge over the eastern states and Mississippi Valley. Daytime highs will continue to approach 90 degrees, with some locations in se Missouri in the lower 90s.
1210 PM EDT Mon Oct 2 2023 High pressure will extend across the region this week.
Rain chances will increase Tuesday afternoon with the highest chances in western OK and western north TX. With the increasing moisture and approaching trough, instability and shear are expected to be sufficient for severe storms to be possible with large hail and damaging winds the primary concerns. The window for severe storms could be fairly narrow depending on the extent/width of the higher moisture over the region, so in other words, the further east you go the more uncertainty and lower the severe potential could be Tuesday afternoon/evening.
146 PM MST Mon Oct 2 2023 A low pressure system will bring cooler conditions and occasional breeziness to the Desert Southwest through this evening. A return to above normal temperatures is anticipated late in the week as high pressure builds across the intermountain West.
321 PM EDT Mon Oct 2 2023 Dry and warm weather continues in the short term as persistent upper level ridging keeps the airmass 'locked' in place. Stout capping in the low/mid levels will keep any precip from developing. Forecast soundings reveal slightly warmer air advecting into the low levels during the day tomorrow as well as deeper mixing within the boundary layer, which should result in afternoon high temps being a couple degrees warmer compared to the last couple days.
120 PM EDT Mon Oct 2 2023 Dry high pressure will remain in place through the majority of the workweek.
927 AM PDT Mon Oct 2 2023 Dry and warmer weather is in store for this week as high pressure builds over the West Coast.
159 PM EDT Mon Oct 2 2023 High pressure maintains dry and sunny weather through midweek, with river valley fog developing each night.
(This evening through Tuesday) This afternoon, a deep upper-level trough was located across the western US, while a surface frontal boundary was situated over the Four corners region. The upper-level trough will move eastward into the northern Plains through tomorrow afternoon. This should push the cold front southeastward into the Texas Panhandle on Tuesday afternoon.
242 PM MDT Mon Oct 2 2023 Through tonight, a trough of low pressure will move north/northeastward from UT to MT/WY then eastward across MT/WY. As it does so, the trough will bring increased ascent for showers (60-80% chance) and isolated thunderstorms. As the upper low moves eastward tonight, it will bring a cold front across the area, with snow levels dropping to 8000 feet west/northwest of Billings to 8500-9000 feet elsewhere by late tonight. but would recommend checking 511 for the latest conditions before heading to the highway. Tuesday, the upper trough will move eastward across the Northern Rockies, with scattered to numerous showers (40-90% chance) over our area is unstable northwesterly flow.
1221 PM CDT Mon Oct 2 2023 Hot and dry conditions will persist today as the upper level ridge remains over the MidSouth. We are still on track for a late week cold front to push through the region and bring a chance of rain along with much cooler temperatures. A large upper level high pressure system will remain over the Mississippi River Valley the next several days, resulting in continued summer-like high temperatures across the Midsouth.
129 PM MDT Mon Oct 2 2023 Current water vapor and upper air analysis shows upper trough situated over the western CONUS, with ridge stretching over the Great Lakes region, and northwest flow over the forecast area. On Tuesday, upper trough axis moves through the Plains with fairly widespread showers and a few storms and a continued cool down with breezy northwest flow.
215 PM EDT Mon Oct 2 2023 High pressure will remain in place over the eastern United States through mid-week.
1225 PM CDT Mon Oct 2 2023 (Today through Tuesday) 500mb heights across south-central Texas will slowly fall through the short term period as the well advertised trough to our west continues to move east. On Tuesday, this moisture will be pulled north ahead of the advancing trough, so chances for shower and storm activity will encompass all of south-central Texas. SPC is monitoring potential for strong to severe storms across west Texas and the Panhandle Tuesday afternoon and evening as the cold front begins to move into the region, and Val Verde County is clipped by a marginal to slight risk.
131 PM EDT Mon Oct 2 2023 Dry and unseasonably warm weather is expected through the middle of the week under high pressure.
140 PM PDT Mon Oct 2 2023 Dry and warmer weather is in store for this week as high pressure builds over the West Coast.
219 PM EDT Mon Oct 2 2023 Dry high pressure will remain in place through the majority of the workweek.
203 PM MDT Mon Oct 2 2023 Closed upper level trough over the Great Basin has begun to open up and lift off to the northeast. Southern and eastern zones will be the most favored areas for the highest rainfall amounts with totals ranging from 0. As the Low moves just south of our CWA on Tuesday, pressure gradient will set up to increase northwesterly winds high enough for Lake Wind Advisory criteria to be met so one has been issued from 9am to 9pm.
640 PM EDT Mon Oct 2 2023 Conditions will be quiet and temperatures will trend warmer through mid week.
Cooler weather will persist with overnight lows expected to be near or below freezing for many locations above 6000 feet Tuesday morning. An upper-level trough is gradually working eastward today with its axis located along the western Arizona border.
Weak low pressure approaching from the Pacific will spread a steady, mainly light rain across SW Washington and NW Oregon today.
A weak front continues to move across Western Washington this afternoon with troughing moving east tonight.
Widespread showers are expected to exit our area by noon on Tuesday as the upper flow carries the trough out of our area, though some lingering isolated showers in Malheur and Owyhee counties will last through Tuesday evening.
Beginning Tuesday, the weather will trend warmer and drier through the weekend.
801 PM EDT Mon Oct 2 2023 High pressure will persist through mid-week.
The only other weather impact of note is some haze spreading west across the Florida Peninsula, likely caused by smoke from Canadian wildfires being pulled across the western Atlantic around the edge of the ridge to the north of the state. High pressure will continue to build across the waters with breezy northeast winds.
409 PM MDT Mon Oct 2 2023 Cooler and more unsettled conditions continue today as the second wave within the trough over the western US pulls north through Wyoming. Regardless, the heaviest precipitation will be tonight through Tuesday morning, decreasing through the afternoon as the trough axis passes to the east.
733 PM EDT Mon Oct 2 2023 Dry high pressure will dominate the region through the week. A cold front approaches late week with much cooler weather late this weekend.
724 PM EDT Mon Oct 2 2023 Conditions will be quiet and temperatures will trend warmer through mid week.
642 PM CDT Mon Oct 2 2023 (This evening through Tuesday) Water vapor imagery shows an upper level trough over Nevada/Colorado pushing east toward the CWA giving way to strong southwesterly winds aloft bringing mid to upper level moisture over the region for the rest of today and into tomorrow. South southeasterly winds near the surface as a result of the high pressure system sitting over the Great Lakes region will aid in keeping moisture at the surface with dewpoints in the upper 50s to upper 60s for the rest of today and tomorrow. Temperatures will be similar to today with highs in the lower to mid 80s across the South Plains and upper 80s across the Rolling Plains.
The high temperature recorded today at Key West International Airport was 89 degrees, which exceeded the average temperature. Several Special Marine warnings for areas of the offshore and nearshore waters and a Special Weather Statement for the Lower Keys were issued due to the windy conditions. The dry air will gradually reduce the high moisture content and restrict the occurrence of showers. Boaters can expect less clearance under fixed bridges, especially during the times of high tide. An area of high pressure will build over the southeastern in its wake, will promote moderate to fresh northeast to east breezes through Tuesday night.
348 PM MDT Mon Oct 2 2023 Cooler and more unsettled conditions continue today as the second wave within the trough over the western US pulls north through Wyoming. Regardless, the heaviest precipitation will be tonight through Tuesday morning, decreasing through the afternoon as the trough axis passes to the east.
Expect more of the same tomorrow as a strong ridge remains in place over the Midsouth with high pressure to our east centered along the East Coast.
752 PM EDT Mon Oct 2 2023 High pressure maintains dry and sunny weather through midweek, with river valley fog developing each night.
931 PM EDT Mon Oct 2 2023 Another clear night with light variable breezes is in store with high pressure centered near Pittsburgh. Dry and warm weather continues in the short term as persistent upper level ridging keeps the airmass 'locked' in place. Stout capping in the low/mid levels will keep any precip from developing. Forecast soundings reveal slightly warmer air advecting into the low levels during the day tomorrow as well as deeper mixing within the boundary layer, which should result in afternoon high temps being a couple degrees warmer compared to the last couple days.
Beginning Tuesday, the weather will trend warmer and drier through the weekend. Ridging will begin to slowly rebuild over the Pacific Northwest starting Tuesday, commencing a gradual warming trend. Weak systems overtopping the ridge are carrying a 20-30% chance to bring light precipitation to the Cascade Crest and the Idaho Panhandle Mountains on Tuesday, but overall the region will remain dry with decreasing clouds.
- More patchy fog overnight into Tuesday morning - Continued sunny with unseasonably warm temperatures Tuesday Visible satellite loop was showing clear skies across all of central Indiana under the influence of a ridge over high pressure from the eastern Great Lakes to the western Gulf of Mexico. This has resulted in well above normal temperatures in the lower to mid 80s over central Indiana. Stagnant synoptic pattern will remain in place as the high pressure ridge continues to provide subsidence and along with a very dry column, per BUFKIT soundings, will result in sunny skies and unseasonably warm temperatures again Tuesday.
614 PM CDT Mon Oct 2 2023 Water vapor imagery shows an amplified upper level pattern with ridging stationed over the eastern two-thirds of the CONUS and deep troughing swirling over the Intermountain West. The influence of the ridge and high pressure at the surface will keep conditions dry and warm through tomorrow night. High temperatures tomorrow are still expected to reach the upper 80s for most locations, with some locations peaking in the low 90s. The biggest difference in tomorrow's forecast as opposed to the past few days will be the increase in mid-level cloud cover ahead of an impending cold front.
956 PM CDT Mon Oct 2 2023 (Issued 945 AM CDT Mon Oct 2 2023) The continued influence of high pressure will keep things clear and quiet tonight. High pressure is slowly inching off to the east. The 925 mb temps are around 21C today and will be similar tomorrow, if not a little warmer.
622 PM CDT Mon Oct 2 2023 (Tonight) High pressure remains over the Tennessee Valley this afternoon, with a nice Cu field well established over the area.
951 PM EDT Mon Oct 2 2023 High pressure will persist through mid-week.
1030 PM EDT Mon Oct 2 2023 Dry high pressure will remain in place through the majority of the workweek.
735 PM EDT Mon Oct 2 2023 (Through Tonight) Strong high pressure will remain over the northeast, with ridge extending south across forecast area. Troughing over the coastal waters continues, providing a pinched pressure gradient. As the flow inland is becoming more northerly, the cooler and drier air will advect in through the night, resulting in lows in the upper 50s inland. While the onshore flow across the still warm Atlantic coastal waters will keep beach communities in the lower 70s.
314 PM MDT Mon Oct 2 2023 Satellite imagery currently puts the low to mid level low over northern Utah moving into southeastern Idaho with the upper-level low just to the west of the Great Salt Lake tracking northeast. There are two frontal boundaries with this system, the first of which is a dry air intrusion with showers and thunderstorms on the leading edge currently extending from the Four Corners area north- northeast to the Steamboat Springs area with associated scattered showers ans isolated lightning strikes, and the second, more of a cold front lying in the trough to the west over the Wasatch Range, also with associated showers. The dry air intrusion ahead of this cold front will limit convective activity to isolated showers overnight as it passes through.
Dry and warm weather continues in the short term as persistent upper level ridging keeps the airmass 'locked' in place. Stout capping in the low/mid levels will keep any precip from developing. Forecast soundings reveal slightly warmer air advecting into the low levels during the day tomorrow as well as deeper mixing within the boundary layer, which should result in afternoon high temps being a couple degrees warmer compared to the last couple days.
647 PM EDT Mon Oct 2 2023 High pressure will remain in place over the eastern United States through mid-week.
442 PM MDT Mon Oct 2 2023 Current water vapor and upper air analysis shows upper trough situated over the western CONUS, with ridge stretching over the Great Lakes region, and northwest flow over the forecast area. On Tuesday, upper trough axis moves through the Plains with fairly widespread showers and a few storms and a continued cool down with breezy northwest flow.
721 PM EDT Mon Oct 2 2023 Dry high pressure will remain in place through the majority of the workweek.
Rain and snow showers will taper off Monday evening as a trough ejects to the northeast.
955 PM EDT Mon Oct 2 2023 High pressure and dry conditions continue across the CWA. quiet and tranquil weather conditions are expected through Tuesday as high pressure dominates the weather pattern.
526 PM MDT Mon Oct 2 2023 Satellite imagery currently puts the low to mid level low over northern Utah moving into southeastern Idaho with the upper-level low just to the west of the Great Salt Lake tracking northeast. There are two frontal boundaries with this system, the first of which is a dry air intrusion with showers and thunderstorms on the leading edge currently extending from the Four Corners area north- northeast to the Steamboat Springs area with associated scattered showers ans isolated lightning strikes, and the second, more of a cold front lying in the trough to the west over the Wasatch Range, also with associated showers. The dry air intrusion ahead of this cold front will limit convective activity to isolated showers overnight as it passes through.
527 PM EDT Mon Oct 2 2023 Dry high pressure will remain in place through the majority of the workweek.
A couple more days of very warm and dry weather will accompany a pronounced 500 mb ridge over the eastern states and Mississippi Valley. Daytime highs will continue to approach 90 degrees, with some locations in se Missouri in the lower 90s.
403 AM EDT Tue Oct 3 2023 High pressure will remain over the region through mid-week.
304 AM EDT Tue Oct 3 2023 High pressure will remain over the region through mid-week.
302 PM MDT Wed Nov 1 2023 The H500 hand analysis map is showing low pressure dominating E. NOAM transitioning to a high pressure ridge along the NOAM Pacific coastline. extends from the PacNW across the Central Rockies to the base of the trough over the Gulf States. Otherwise the warming trend should continue as the Pacific ridge works farther inland.
A weak lee trough will prevail through the entire period. The lee trough may fragment Thursday with winds becoming light and variable underneath the sfc trof. For lows tonight, expect slightly warmer lows with values in the upper 20s to lower 30s.
1004 PM EDT Wed Nov 1 2023 High pressure builds into the area overnight and moves offshore during Thursday.
Lows tonight will be warmer with the increased southerly winds increasing mixing as well as the warmer airmass. Thursday will be similar to Wednesday, albeit a little bit warmer with the continued warm air advection into the region, as well as more widespread strong winds.
1042 PM EDT Wed Nov 1 2023 Tonight will be the coldest night since early Spring with widespread sub-freezing temperatures expected to end the growing season in central PA.