Aikyam-Lab/Synoptic-Bench huggingface dataset:
131 PM EDT Sun Jun 11 2017 Atlantic high pressure will extend across the area through mid week. An inland trough will develop late in the week as the high shifts further offshore. At the surface, Atlantic high pressure ridging into the Carolinas will gradually weaken and move further offshore.
Highs this afternoon will be around 90 degrees and even a few degrees warmer on Monday.
The center of a cold upper low is currently progressing south across Trinity and Mendocino Counties. Farther south at KUKI, an upper low was spinning over the western portions of the Central Valley, with a few lightning strikes having been observed with a thunderstorm just east of the Yolla Bolly Mountains.
Warm and drier mid-level southwest flow aloft associated with the upper low will keep temperatures aloft very warm and should keep any widespread showers and thunderstorm development from occurring.
209 PM EDT Sun Jun 11 2017 High pressure will continue to build into the area today maintaining fair weather, with temperatures slightly above normal. Due to increased insulation from the high clouds any fog would likely be patchy. High pressure aloft will slide off the Southeast U.
A predominant low level southeast flow will persist across the region early this week, as ridge axis of high pressure over the west Atlantic remains north of the area. A stronger area of high pressure building down into the northeast U. shifts subtropical ridge axis farther south and across the area into late week. Winds out of the east-southeast will veer the south- southeast later in the week as subtropical ridge axis north of the area shifts southward and across the region.
1254 PM CDT Sun Jun 11 2017 Stationary summer pattern remains entrenched across the bi-state region with mid/upper level ridging aloft and south/southwest low- level flow. You will probably begin to notice the increase in humidity as dewpoints this afternoon rise into the low to mid 60s due to the prolonged southerly surface flow.
SHORT TERM (Tonight through Monday Night):Upper high centered in the vicinity of west central Mexico to maintain generally light north flow aloft over deep south TX through the period while southeasterly onshore flow will prevail at the surface.
351 PM EDT Sun Jun 11 2017 A westward extension of the Bermuda high lingers to our southeast through Monday night, as a trough of low pressure lingers over the area.
Increasing moisture from the Gulf of Mexico the next 24 hours as upper ridge continues to weaken. Chattanooga Airport, TN 89 69 85 69 / 10 10 40 20 Knoxville McGhee Tyson Airport, TN 87 67 86 68 / 10 0 30 20 Oak Ridge, TN 88 67 87 68 / 10 0 30 20 Tri Cities Airport, TN 85 60 85 64 / 10 0 10 10.
H5 analysis depicts the local region beneath a ridge axis, with closed lows flanking this feature both over the Atlantic Ocean and another over northern California. 00" as moisture advection ensues in earnest as the aforementioned surface anticyclone continues to trek eastward, enhancing southerly low level flow. The region will remain entrenched beneath the upper ridge through midweek, with chances of showers and thunderstorms daily. With an abundance of moisture present, heat indices will rise into the mid to upper 90s during the day, while overnight lows are in the lower 70s.
555 PM CDT Sun Jun 11 2017 Low pressure over the Great Plains combined with high pressure moving off the southeast Atlantic Seaboard is providing the area with warm and moist southerly flow this afternoon. but subsidence from the ridge aloft is keeping it pretty flat. Expect lows Monday morning to be a few degrees warmer over all than this morning. Monday afternoon highs should be around the same as today's if not a little warmer. but persistent subsidence from the ridge aloft should preclude widespread convection. With increasing low level RH on Monday there will likely be more diurnal cu on Monday afternoon and slightly warmer temperatures some isolated convection could pop up over the Ozarks.
As the low level jet increases this evening, 900-800 mb moisture transport is expected to increase with a weakening cap. A surface boundary will begin to retreat northward Monday evening and overnight in response to the the large upper trough moving eastward through the Northern Rockies. That said, the best chances for scattered elevated convection to break out will be late in the evening or closer to the midnight hour as several models are suggesting the low level jet amplifies to upwards of 50 knots.
Sfc dew pts have increased and overnight low temps will only cool into the lower/mid 70's. An upper level low will remain over the region through Monday and the combination of increased low level moisture and the upper level feature will provide the area with scattered showers and isolated thunderstorms on Monday.
The latest consshort and hrrr runs suggest dewpoints in the lower 30s - even upper 20s - possible southwest. Raised max temps a tad, mainly in the dry areas in the south central with high res models indicating temps in the lower 80s today. Highs today will range from the mid 70s northwest to the lower 80s southeast. Dry air with surface dewpoints in the lower 30s across much of the west this afternoon will bring minimum relative humidities as low as 20 percent. But shortly after midnight the effects of the ejecting h500 upper low will bring scattered showers and thunderstorms to southwest North Dakota.
330 PM CDT Sun Jun 11 2017 Low pressure over the Great Plains combined with high pressure moving off the southeast Atlantic Seaboard is providing the area with warm and moist southerly flow this afternoon. but subsidence from the ridge aloft is keeping it pretty flat. Expect lows Monday morning to be a few degrees warmer over all than this morning. Monday afternoon highs should be around the same as today's if not a little warmer. but persistent subsidence from the ridge aloft should preclude widespread convection. With increasing low level RH on Monday there will likely be more diurnal cu on Monday afternoon and slightly warmer temperatures some isolated convection could pop up over the Ozarks.
At the surface, an area of low pressure had developed over northwestern KS with an inverted trough extending northeast through eastern SD and a dryline stretching south through west TX. And there does not appear to be a strong signal for mid level moisture advection with the low level jet. This may allow winds to lighten up and temps to be a few degrees cooler than this morning. So highs are expected to be pretty similar with readings in the lower 90s. By Monday evening, the deep upper level low will be located over the northwestern CONUS.
1234 PM CDT Sun Jun 11 2017 Currently residing in southwest flow on the west side of an upper level ridge.
Drier air along the lower Texas coast will move into the coastal plains this afternoon and evening with only few clouds expected. PWAT image shows an axis of much drier air from off the lower Texas coast extending north-northwest into the Coastal Bend.
Overall, dynamics are not looking impressive as these waves will be riding through weak ridging. Nevertheless, all models generating QPF/storms within the high CAPE/low shear environment.
1252 PM CDT Sun Jun 11 2017 Southwest flow aloft will slowly increase as the upper ridge axis has now shifted to the east. Solutions indicate around 40 knots of a low level jet forming again late this evening mainly near or just east of KLBB to KPVW and we added the low level wind shear remark with this issuance.
The closed upper-level low pressure system sitting over northern California will make an abrupt turn overnight tonight and churn over Nevada and then turn to the northeast until it passes over the region by the end of the short term period. At this time, it does not seem that the low will either fill in or deepen significantly while over Montana, thus making variances in expected precipitation accumulation more a consequence of differences in mesoscale effects as opposed to the synoptic features. However, with the low being well developed already, synoptic features certainly will play a role in the precipitation potential for the region. As the expected track of the low continues to be further east, the potential for severe weather has decreased over northeast Montana to very low to marginal.
355 PM EDT Sun Jun 11 2017 A westward extension of the Bermuda high lingers to our southeast through Monday night, as a trough of low pressure lingers over the area.
Mid-level synoptic ridging will continues today with a mid-level cap and dry air prevailing aloft.
High-res models do take the complex slightly farther north than before, and have edged the higher pops a wee bit northward. This will be an area that may not be worked over too much this morning, and the low level jet does look to persist through the day and shift eastward toward southeast MN by late afternoon. Warm front will also be in the area, so any storms that do develop will have a favorable environment for a tornado or two. Hot and humid air remain in place as southwest mid level flow persists ahead of the closed low to the west.
624 PM EDT Sun Jun 11 2017 A westward extension of the Bermuda high lingers to our southeast through Monday night, as a trough of low pressure lingers over the area.
641 PM EDT Sun Jun 11 2017 High pressure will continue to extend into the Ohio valley from the mid Atlantic coast through Monday night.
109 PM CDT Sun Jun 11 2017 High pressure continues over the area. Today Through Monday Night The larger scale flow over the CONUS will be characterized by a closed upper low over the Pacific Coast over CA and OR. with a ridge over the ERN CONUS. with dewpts increasing from the low to mid 60s this Sun afternoon.
Water vapor imagery shows an upper level trough that continues to ride south towards northern CA with broad cyclonic flow keeping light southwesterly winds aloft across the Panhandles. Temperatures across the area are in the high 90s with a few 100s again as of 19z. Overall forcing today will be limited to some convergence along a dryline positioned near the central/east central Panhandles as a lee trough strengthens where a cumulus field is noted.
Ridge will continue weaken across the Tennessee Valley and southern Appalachians. The big ridge still expected to hang around through about mid week with a moistening lower level flow developing.
311 PM CDT Sun Jun 11 2017 An elevated warm front was located over the southern third of the forecast area at 1930Z. Elsewhere, high pressure was in play. The showers and storms will end from west to east over northwest Wisconsin later tonight with the high pressure in charge. A stronger area of high pressure over Manitoba will affect the region on Monday. A warm front will continue to be the focus for showers and thunderstorms early in the period. On Monday night, the warm front will start to lift northward across Minnesota and Wisconsin, generating thunderstorms first in the south, and then spreading northward during the night.
In the mid/upper levels, troughing extends south through the western Atlantic with another trough over eastern Texas extending into the western Gulf of Mexico. Mid-level ridging extends northwest from eastern Cuba to the southeast U. Another trough over the western U. In turn, upper ridging will build over the southeast U. High pressure in the western Atlantic ridging westward will become the dominant weather feature over the area for the next several days.
After another hot and windy day Monday, influences of the slowly-moving upper low over the northern U.
347 PM EDT Sun Jun 11 2017 Latest surface analysis show a broad high pressure centered over the western Atlantic waters gradually lifting north allowing for wind flow to remain more easterly across South Florida today. Through the week: high pressure over the western Atlantic waters keeps an easterly flow through mid week before shifting winds more southerly as ridge drifts east into the Atlantic waters the rest of the week. As a result, most of the higher convection can be expected along the interior as winds become more southerly by the end of the week. Overnight low temps will range around the low to mid 70s through much of the period.
1217 PM CDT Sun Jun 11 2017 Developing low pressure over eastern Kansas has helped to intensify a strong southerly LLJ over the area. This strong LLJ is expected to increase low levels a few degrees Celsius and give the area a boost of 3-4 degree in the high temperatures for Sunday from what they were yesterday leading to highs in the low 90s throughout the region. This increase in temperatures along with dewpoints in the lower 70s will result in heat indexes in the mid to upper 90s for Sunday afternoon creating the possibility of some heat related issues for those outside or sensitive to heat.
259 PM EDT Sun Jun 11 2017 High pressure will build across the area today through Monday bringing dry warm weather with high temperatures both days well into the 80s.
The low clouds that spread across parts of the forecast area this morning started breaking up late morning and skies had become mostly sunny across most of the region by mid afternoon. Water vapor satellite imagery continues to show an upper level low over far Southeast Texas this afternoon.
235 PM MDT Sun Jun 11 2017 A closed 550mb low pressure center was located over northern California early this afternoon with broad southwest flow ahead of it covering much of the country. At the surface a cold front extended from northeast Nebraska through Oberlin and Tribune Kansas into southeast Colorado. On Monday the upper low is forecast to be over much of Nevada and during the day is expected to pivot its way into southern Idaho. At the start of the period, upper ridging dominates the eastern half of the country while an upper low digs into the Pacific Northwest.
Warm overnight lows continue given the amount of moisture in place, with temps only dipping to the low 70s inland and mid 70s near the coast. With the center of low-level ridging expected to remain to our east, a southeasterly flow will continue to advect moisture from the Gulf of Mexico into the region.
Weak upper level ridge in place, with the best southwest flow aloft across the Permian Basin and South Plains.
248 PM EDT Sun Jun 11 2017 A weak cold front will cross the area this evening and stall across the region overnight. The front will lift north as a warm front on Monday as a weather disturbance tracks across the area from the west. A cold front cross the area Monday night. Winds will diminish this evening as a weakening cold front moves into the area and stalls. Tonight will then bring some cooling across the north with lows dropping into the low 50s, but be warm Downeast with lows in the low to mid 60s. A weather disturbance approaching from the west will then lift the stalled front north as a warm front on Monday.
453 PM EDT Sun Jun 11 2017 High pressure has brought dry and warm weather for the start of the new week. Broad high pressure aloft and southerly boundary layer flow will maintain dry weather and more humid warmth through tonight.
102 PM EDT Sun Jun 11 2017 Bermuda high pressure will remain anchored off the coast through the middle of this week. A trough and cold front will approach the region late this week. indicating today will be a degree to 3 degrees warmer than yesterday. A 591 DM upper level high will be cresting over our area early Monday morning with a dry forecast expected Monday. 850 MB temps are about 1 degree warmer than this afternoon. This warmer air aloft will push highs into the lower 90s inland to middle to upper 80s at the beaches. A large high pressure system both aloft and at the surface will be in control of our weather.
An unseasonably cool trough will bring showers and thunderstorms to portions of Northern California today.
A broad upper level low pressure system over northern California will move eastward into the Great Basin tonight and Monday. As the upper low moves further east, westerly flow will take over across the Pacific Northwest.
309 PM EDT Sun Jun 11 2017 High pressure will remain in control of our weather bringing warm and dry conditions through tomorrow.
240 PM CDT Sun Jun 11 2017 Latest surface chart is not much different than yesterday, with high pressure now centered a little further east over the Carolinas and a frontal boundary draped over the northern Plains states. We will see dewpoints steadily creep to 70 degrees or even into the lower 70s bringing the real sticky feel back into the air. We will definitely be feeling the effects of this moisture, as heat index values jump into the lower 90s to possibly mid 90s in some locales as temperatures continue to be in the upper 80s.
Flow turns southerly as high pressure retrogrades eastward off the coast.
The weak mid to upper level low over southeast Texas will weaken into a shear axis over the northwest Gulf of Mexico on Monday and remain in this region for Monday night.
Low clouds should lift by late morning as the closed low continues to weaken into a shear axis east of Galveston Bay and the subtropical ridge continues to build in from the southwest. This should allow high temperatures to be 1-2 degrees higher tomorrow with most spots in the lower to mid 90s except for some upper 90s in the Rio Grande Plains.
308 PM CDT Sun Jun 11 2017 High pressure over the southeast has maintained the quiet and warm weather pattern for the weekend.
Tue & Tue Night: An intense, cut-off upper-deck cyclone that has been spinning over the OR Coast during the night is still expected to drift S/SE along the CA/NV Border tonight. The cyclone will intensify as it cuts off even further over the Great Basin Mon morning. The upper deck cyclone would be forced to lift slowly NE across the Northern Rockies by a strong & massive mid-upper high sprawled across the Southeastern U. Thunderstorms are still scheduled to arrive Tue evening as the afore-mentioned mid-upper cyclone lifts N/NE along the Saskatchewan/Manitoba Border. This would send a weak, slow-moving cold front SE that may reach Central KS late Tue night. With the mid-upper cyclone continuing to lift slowly NE across Manitoba the cold front is still expected to decelerate as it ventures further toward Southeast KS on Wed.
Temperatures were in the upper 80s to low 90s most areas, with heat index values in the low to mid 90s. Temps/heat index: Dewpoints crept up into the mid to upper 60s today, helping keep temps a bit cooler than expected. With similar to slightly higher dewpoints expected Monday, did not want to get too crazy with the high temp forecast and have held readings in the 90-94 range.
A storm system over northern California will be responsible for blustery and cooler than normal weather across the central California interior through tonight with isolated to scattered showers over mainly the Sierra north of Kings Canyon.
The large upper low pressure system is still on track to move through the Intermountain West tonight and early Monday, bringing bands of showers over southwest/west-central Montana, and central Idaho by Monday afternoon.
335 PM EDT Sun Jun 11 2017 High pressure will continue to extend into the Ohio valley from the mid Atlantic coast through Monday night.
315 PM EDT Sun Jun 11 2017 Afternoon surface analysis showing an area of high pressure remains parked off to the east. We continue to see increased moisture as dewpoints have climbed into the low 60s. Mid-upper level ridging over the southeast CONUS will be in an ongoing decay process as the period starts.
Southwesterly flow remains at 500mb, as the low over northern CA slides into southern ID by the end of the period, building a ridge across the Dakotas and western MN. Expect nearly a carbon copy for temperatures Monday as today, topping out in the low to mid 80s.
Surface wise, a two prong western Atlantic ridge extends across the southeastern United States and the Florida peninsula. Although the mid and upper level western Atlantic ridge will be eroded by a mid latitude trough from both the east and west, a ridge axis below 700 mb will remain across south Florida and our region.
253 PM MDT Sun Jun 11 2017 A vigorous Pacific low pressure system will produce a moist, unstable flow aloft this evening over Southwest Montana. More showers and thunderstorms will develop over Southwest Montana as the low moves into the Great Basin Monday.
Potent trough for June will track across the Great Basin tonight producing very windy conditions through early Monday morning. The system will usher in much cooler temperatures for Monday.
141 PM EDT Sun Jun 11 2017 High pressure will build across the area today through Monday bringing dry warm weather with high temperatures both days well into the 80s.
114 PM EDT Tue Mar 27 2018 High pressure ridging over the area will continue today with northeasterly surface flow gradually becoming southeasterly.
337 PM EDT Tue Mar 27 2018 Upper air pattern consists of a closed 500 mb low over AZ with a trough over the upper Great Lakes this morning. This trough moves out this afternoon. Another trough moves into the northern plains on Wed.
Current analysis depicts that the upper-level low is now over Graham/Greenlee counties with scattered rain/ mountain snow showers near the center of the low. 50" across the highest peaks of the White Mountains, with some locally higher amounts possible given the convective nature of the precipitation. With increasing heights under northwesterly flow on the backside of the upper low Wednesday, temperatures will warm back up to near seasonable levels.
High pressure will yield dry weather into the weekend.
1150 AM MDT Tue Mar 27 2018 Upper level trough passing through the Rockies has split as advertised with northern stream energy driving out into the plains and southern half closing off over south-central Arizona. This activity will continue to get dragged west and south as the upper low over southern Arizona starts pushing eastward and wraps additional moisture northward across New Mexico up into our southern mountains and valleys. As the shallow trough over the central U.
334 PM MDT Tue Mar 27 2018 Short term forecast period is a transition time as the northern stream 500 mb trough departs to the east, while southern stream closed low lags behind and slowly moves out of southern Arizona and into the Texas panhandle by late in the day Wednesday. During this time period upper flow over the forecast area goes from broad southwesterly flow ahead of the trough to a shift to the west to northwest after the trough passage. For Wednesday as the upper trough passes we'll see a northerly wind shift mid morning on the plains with a weak cold front. With above freezing temperatures on the plains precipitation will spread east in the form of rain in the afternoon.
258 PM CDT Tue Mar 27 2018 High pressure will move into the region this evening with gradual clearing of the skies and winds becoming light. High pressure will be pretty much centered over WI by early Wednesday morning. High pressure continues to hold across the region on Wednesday with mostly sunny skies and warm temps pushing into the mid 50s for most.
This will occur ahead of a cold front advancing southward across the area. Chances for rain continue through Wednesday night, as an upper trough passes through the Great Plains.
Otherwise, temperatures as of 1 PM this afternoon ranged from the mid 30s to the lower 40s. Clouds are expected to continue eroding from west to east going into this evening as high pressure continues to build in. With the high overhead producing light winds,mostly clear skies, concern becomes fog development. Warm air advection kicks in Wednesday on the backside of the departing high and approaching cold front from the Northern Plains. Mid-level trough/surface cold front pushes through Wednesday evening, but is expected to produce not much more than some cloud cover as better forcing stays well north of the area. In the meantime, an area of low pressure will be pushing through MO into southern IL later Wednesday night as a mid-level trough pushes into the Upper Mississippi River.
333 PM CDT Tue Mar 27 2018 The current round of rainfall, forced by lift on the cool side of a frontal boundary and in advance of a positive tilt trough to our west, should conclude by late tonight.