Aikyam-Lab/Synoptic-Bench huggingface dataset:
317 AM EDT Mon May 31 2021 High pressure will settle over the region for the next couple of days and this will result in fair and seasonable conditions through Tuesday. Early this morning: High pressure is building in at the surface across the forecast area as the upper low continues to move east. Early morning lows in the mid 50s across the CSRA and central Midlands, and the low 50s in the Pee Dee and northern Midlands. Today and tonight: High pressure will build into the region. This will keep temperatures a few degrees cooler than normal. Highs will mainly be in the low 80s with lows overnight in the mid to upper 50s.
328 AM CDT Mon May 31 2021 A weak ridge should keep conditions dry today. Temperatures will be a bit warmer, climbing into the low 80s across most of the Midsouth. A deepening trough over the southwestern US will strengthen southwest flow over the Southern Plains and across the lower and middle Mississippi River valley. The ridge will slowly break down and shift east this afternoon and overnight. This feature along with an attendant surface cold front will bring a round of showers and thunderstorms into eastern Arkansas early Tuesday.
833 PM PDT Sun May 30 2021 High pressure continues to build into the area. An upper level ridge of high pressure will be over the region through the midweek, leading to dry and calm conditions as well as a significant warm up. Tomorrow and Tuesday, an upper level ridge will continue to strengthen over the west coast leading to a period of dry and warm conditions. By Tuesday, most of the lowland areas in the forecast area will see temperatures in the mid to upper 90s with mostly clear skies.
406 AM EDT Mon May 31 2021 Variable high cloudiness and high temperatures in the low to mid 70s can be expected today.
222 AM MDT Mon May 31 2021 H5 ridge continues to build along the West Coast during the next 36 hours, keeping western and central WY in northwesterly flow aloft. Although there may be some slight lift with this, the lack of surface focusing and moisture will minimize any convective development, and limit it to the highest elevations of the Winds, Absarokas, and Big Horns during peak heating. With strengthening ridge and increasing midlevel temps, highs will continue to recover into the 70s today and Tuesday. with 60s across the Parks and 50s for the highest elevations. The beginning of the period has a ridge axis located across western portions of Oregon and Washington with northwesterly flow over the CWA.
354 AM CDT Mon May 31 2021 Seasonably cool conditions are present across the area this morning with temperatures mainly in the low/mid 50s under light NE-E winds. The cirrus won't have too much of an impact on temperatures today as the high pressure system to our NE moves farther east and developing southerly flow results in WAA. High temperatures this afternoon are expected to be mainly in the low 80s. A quasi-zonal upper flow pattern across the region today will gradually evolve into SW-NE upper flow as a trough develops in the Central CONUS. Deepening S-SW flow in the low-mid levels will occur on Tuesday as the trough moves closer to the region.
A few of the traditional cooler spots out east have fallen into the lower 40s. Temperatures should continue to drop off with lows bottoming out in the lower-mid 40s. For today, dry conditions are expected with slightly warmer temperatures. Highs on the day should top out in the lower-middle 70s over the Bluegrass and out in the I-75 corridor. Dry and tranquil weather is expected for the overnight period with lows dipping into the low-mid 50s. By Tuesday, troughing deepens across the central CONUS setting the stage for unsettled weather for the remainder of the work week. The OH Valley, situated between aforementioned trough and western Atlantic ridging, will reside beneath deep SW flow that will advect warm, moist Gulf air into the region resulting in surface dew points in the low 60s.
1056 PM CDT Sun May 30 2021 Main focus on the short term is the chance for afternoon thunderstorms, with the low possibility of seeing a funnel cloud or even a weak landspout. While that is not a lot of CAPE, vast majority of it is in the lowest 3 km, which could lead to enhanced stretching potential as thunderstorms start to initiate. For Tuesday, the region remains under northeastward flow aloft as a strong amplified ridge sets up along the west coast. As the amplified ridge is slow to move eastwards, the region will remain under a very similar pattern bringing much warmer air polewards.
405 AM EDT Mon May 31 2021 Following a dismal holiday weekend, Memorial Day will be dry and much warmer across Central Pennsylvania.
RAP soundings for the late afternoon/early evening support this, with drying in the mid-levels, and a slightly cooler atmosphere present (-10C at 500mb). What is most likely is for pretty typical thunderstorms to occur once again, perhaps with more lightning with the cooler atmosphere and more efficient ice production. Scattered thunderstorms are expected this afternoon, and may be rather efficient lightning producers with a cooler atmosphere.
1219 AM EDT Mon May 31 2021 High pressure will prevail through mid week.
221 AM EDT Mon May 31 2021 High pressure builds into the Mid Atlantic region tonight with warming temperatures Monday and Tuesday.
1156 PM CDT Sun May 30 2021 (This evening through Monday) Convection forming on the High Plains this afternoon and evening will make a run east toward the forecast area this evening and affect the area overnight into tomorrow.
108 AM EDT Mon May 31 2021 High pressure will build from the northwest tonight and become centered across the area on Monday. High pressure is building down across the Great Lakes region this afternoon and will be moving our area tonight into Monday. Clouds have been stubborn to clear out across the far southern and eastern portions of the CWA but they will clear out by this evening as the upper level low continue to move away from our area. Monday will be a fabulous day with sunshine afternoon temperatures back into the lower and perhaps a few middle 70s.
Mostly clear skies cover Middle Tennessee this evening as a ridge of high pressure sits to our west. High pressure has returned to the region.
350 AM EDT Mon May 31 2021 High pressure centered over the area today will move off to the mid-Atlantic coast tonight.
343 AM EDT Mon May 31 2021 High pressure will control the weather pattern across the lower mid-Atlantic today and Tuesday, resulting in warmer temperatures and drier conditions.
1231 AM CDT Mon May 31 2021 (This evening through Monday) At this hour, an upper-level ridge was breaking down across much of west Texas while an upper trough was digging in over Baja California. An area of low pressure is expected to develop in the lee of the Rockies overnight and push southeastward toward Wichita Falls. While a marginal wind threat is possible in the morning with any bowing segments, the bigger threat will be heavy rain as it moves slowly southeastward through the morning with the cold front.
Through this evening, a trough will move southeast through the area. Under partly sunny skies, surface temperatures will warm into the lower and mid 70s. As the cold core (-18C to -21C) of 500 mb trough moves overhead during peak heating, relatively steep lapse rates will develop during the afternoon and early evening.
129 AM EDT Mon May 31 2021 High pressure will continue to build into the region, then slide offshore mid to late week. Expect clouds to continue to slowly shift offshore through the rest of the overnight period as high pressure builds in. Have lows slightly warmer, but still in the upper 40s to low 50s. High pressure will build in overhead today, with mostly sunny skies expected. Across the Outer Banks and into mainland Dare and Hyde counties, an onshore winds will keep conditions cooler, with highs only in the upper 60s to low 70s. High pressure will remain over the area tonight, shifting slightly offshore by early Tuesday morning. High pressure takes control for the first half of the week.
The high pressure that is to the south will continue to to be shoved south as a broad trough east of the Rockies dominates.
Low temperatures tonight are expected to range from the low 50s north of Highway 84 to near 60 along the coast, well below seasonal norms. Monday night will see low temperatures ranging from around 60 inland to the low to mid 60s south of I-10, again below seasonal.
Otherwise, high pressure remains in control through Monday with light sly/swly flow developing at all sites amidst low vfr cu. CDG Chattanooga Airport, TN 83 60 85 64 86 / 0 0 0 0 20 Knoxville McGhee Tyson Airport, TN 79 57 84 62 85 / 0 0 0 0 20 Oak Ridge, TN 79 57 84 61 84 / 0 0 0 10 20 Tri Cities Airport, TN 77 53 82 59 83 / 0 0 10 0 20.
This is thanks to surface ridging across Eastern Conus and weak W-SW flow aloft. Rain-free conditions are expected as ridging is expected to continue in control for the short term. Look for the warming trend to continue into Tuesday with the slowly weakening ridge. While highs will still be in the 80s, readings should be 2-4 degrees warmer than today. Winds should shift to SE-S with a more onshore flow expected in response to the movement of the ridge.
With dry air in place in the low levels, don't think we will see much more than virga and mid level clouds. Overall flow remains active across the area through the end of the week and then upper level ridge builds into the area. Looking to the start of the period, showers and storms could be waning across the northern CWA as a weak cold front moves into the area.
As the high pressure broadens across the Southeast, winds are expected to become calmer throughout the afternoon across the region. Lows tonight will be warmer with temperatures dropping into the upper 60s.
Attention Tue/Wed then turns to a very slow moving mid level trof that will be evolving out over the Plains.
249 AM MDT Mon May 31 2021 Current surface map places weak high pressure across the Dakotas. Upper ridge is building across the western CONUS, resulting in northwest flow across the Northern Plains.
Ketcham Ridging over the Rockies will lead to a warming trend for the end of the work week as southerly winds return to the plains. Some uncertainty on how the end of the week will play out when it comes to pops, as the GFS shows the Rockies ridge breaking down for the end of the week. While the ECMWF suggests that the ridge will break down as well, but shows a southern stream system moving north into the KS for the weekend. Weak cold front remains from near Emporia to near Wichita with cooler easterly flow keeping LIFR conditions in place over much of central KS, currently affecting KRSL-KGBD. The exception will be KCNU, which will not see the lower ceilings until late Mon morning.
A few sites have dropped as low as 1/4SM and visibility this low will remain possible into mid-morning before diurnal mixing begins. This said, there remains at least a low end chance for a shower/thunderstorm to work into the Pine Ridge downstream of the Black Hills. The pattern looks to remain quieter through midweek with upper ridging building into the western half of the CONUS.
An upper ridge will build over the region through Tuesday for warm and sunny conditions through the fist half of the week.
327 AM EDT Mon May 31 2021 Synopsis/Discussion/Marine - Dissipating thunderstorms from the NW this evening - Risk for Thunderstorms later Thu - Near seasonable High temps into Thu then warmer than normal - Dissipating thunderstorms from the NW this evening The atmosphere in WI becomes rather unstable this afternoon and evening. We will hold onto the low risk for thunderstorms in that region for this evening.
More storms will likely develop across the higher terrain and move east onto the plains. As we head into midweek, upper troughing will remain over the area with a chance for storms each day.
Today: Mid level trough continues to transition east of our CWA early this morning, with a few weak showers (isolated lighting activity) over the Lake of the Woods area closer to mid level circulation on WV imagery over north central MN. This upper level ridging will advect a warm, dry air mass into the region and in conjunction with strong WAA at the surface will result in temperatures rapidly climbing up to well above normal.
327 AM EDT Mon May 31 2021 Nice weather will continue through Memorial Day and into Tuesday as the area remains under the influence of high pressure.
A deep layer ridge axis extending in a southwest to northeast orientation across the northern Gulf of Mexico and the forecast area will remain in firm control of the region through Tuesday. As a result, a warmer and drier airmass in the mid-levels will induce a strong capping inversion through the short term period. Dewpoints will gradually rise from the 50s into the lower to middle 60s by Tuesday morning, and this increase in low level moisture will allow for a scattered fair weather cumulus field to develop beneath the mid-level cap by Tuesday afternoon.
554 AM MDT Mon May 31 2021 An upper level positive tilted trough is expected to track eastward towards the Midwest, with a ridge of high pressure coming on-board from the western seaboard. However, high-resolution models remain in fairly good agreement that much of the precipitation is expected to remain to the south, with better chances along the higher terrains and in the Rockie Mountains.
525 AM MDT Mon May 31 2021 H5 ridge continues to build along the West Coast during the next 36 hours, keeping western and central WY in northwesterly flow aloft. Although there may be some slight lift with this, the lack of surface focusing and moisture will minimize any convective development, and limit it to the highest elevations of the Winds, Absarokas, and Big Horns during peak heating. With strengthening ridge and increasing midlevel temps, highs will continue to recover into the 70s today and Tuesday. with 60s across the Parks and 50s for the highest elevations. The beginning of the period has a ridge axis located across western portions of Oregon and Washington with northwesterly flow over the CWA.
Beginning on Tuesday we have a surge of warmer air moving into the area at mid levels, which in combination with some deeper mixing, should help warm temperatures into the mid and upper 70s.
Northwest flow aloft continues through tonight as weak upper ridging moves into the region from the east. At the surface, weak ridging over the Appalachians shifts southwest through Tuesday out over the northern Gulf.
420 AM PDT Mon May 31 2021 Through midweek, a weak upper level low pressure system will be centered over northern and central Baja with high pressure aloft over northern and central California.
1017 AM EDT Mon May 31 2021 A sharpening upper trough axis, the southern portion of the extensive trough which passed through the eastern U. Analysis of this morning's KEY sounding showed the axis from 600 mb on up has actually passed east of the Keys, with the lower tropospheric troughing remaining to the north and west. As noted in the early morning discussion, the lack of surface focussing mechanisms other than the mesoscale island heating and convergence processes will more likely result in developing convection near and north of the Keys, with the remaining positive vorticity advection associated with trough likely to keep scattered clusters of deeper convection over the Straits.
VFR through the period at all sites as high pressure remains in control through Monday with light sly/swly flow developing amidst low vfr cu beneath high cirrus. CDG Chattanooga Airport, TN 82 60 85 65 86 / 0 0 0 10 20 Knoxville McGhee Tyson Airport, TN 78 57 83 63 84 / 0 0 0 10 20 Oak Ridge, TN 78 57 82 61 83 / 0 0 0 10 30 Tri Cities Airport, TN 76 53 81 60 82 / 0 0 10 10 20.
High temperatures will be slightly warmer across east central and southeast MO and southwest IL where less cloud cover is expected along with continued dry conditions. More significant precipitation will spread into parts of central and southeast MO late tonight and move into east central MO and southwest IL on Tuesday, along and south of I-70 as upper level divergence increases ahead of approaching and deepening upper level trough in the Plains. High temperatures on Tuesday will be slightly cooler across central and southeast MO due to the cloud cover and rainfall.
943 AM CDT Mon May 31 2021 High pressure over south central North Dakota is resulting in full solar and fairly light winds this morning, with warmest temperatures in the upper 50s breaking into the low 60s. Today: Mid level trough continues to transition east of our CWA early this morning, with a few weak showers (isolated lighting activity) over the Lake of the Woods area closer to mid level circulation on WV imagery over north central MN. This upper level ridging will advect a warm, dry air mass into the region and in conjunction with strong WAA at the surface will result in temperatures rapidly climbing up to well above normal.
Trough remains remains in control of the weather through today, with scattered showers and isolated thunderstorms developing over the higher terrain this afternoon. The upper-level low nearly remaining locked in place over to the south over the Baja California Peninsula through the week and high pressure building north and west of Arizona. The greatest chance for precipitation looks to be over the higher terrain along the Rim and into the White Mountains.
528 AM MDT Mon May 31 2021 Current surface map places weak high pressure across the Dakotas. Upper ridge is building across the western CONUS, resulting in northwest flow across the Northern Plains.
Readings have fallen rather nicely into the 50s, though with the higher clouds moving in, it's doubtful how much more temps will drop before sunrise. Low pressure responsible for the Plains systems will slowly move northeastward through the period on southwest/nearly quasi-zonal flow aloft.
646 AM EDT Mon May 31 2021 High pressure will settle over the region for the next couple of days and this will result in fair and seasonable conditions through Tuesday. Early this morning: High pressure is building in at the surface across the forecast area as the upper low continues to move east. Early morning lows in the mid 50s across the CSRA and central Midlands, and the low 50s in the Pee Dee and northern Midlands. Today and tonight: High pressure will continue to build into the region. This will keep temperatures a few degrees cooler than normal with light and variable winds. Highs will mainly be in the low 80s with lows overnight in the mid to upper 50s, since some low level moisture will prevent ideal radiational cooling.
920 AM CDT Mon May 31 2021 Convectively enhanced cold front will continue to move south this morning through the afternoon and will likely be the focus for severe convection this afternoon. The lowest ceilings appear to be affecting areas from KPVW north and northwest with the potential to sag southward toward KLBB. Low level focus for additional convective development this evening to overnight should begin to shift further south as reinforced outflow shifts southward and cooler air mass across the forecast area gets a bit deeper. The base of the upper trough to our west is progged to cut off over Baja California by midweek with the remainder of the upper trough expected to shift slowly eastward toward the Mississippi Valley. Meanwhile, an amplifying ridge over the West Coast will begin to expand eastward toward the Great Plains late in the week.
Strong high pressure will gradually build into Utah through at least the midweek timeframe.
/Issued 327 AM EDT Mon May 31 2021/ Nice weather will continue through Memorial Day and into Tuesday as the area remains under the influence of high pressure.
Another dry and warm day is expected today across the Northern Rockies as high pressure continues to build over the region from the west.
/issued 356 AM CDT Mon May 31 2021/ SHORT TERM (Now through Tuesday): A 500mb ridge over central Mexico will continue to nose into deep south Texas through much of the short term. Highs this afternoon are expected to range from the lower 80s at the beaches, upper 80s to lower 90s inland and the mid 90s across the west. A robust 500mb low will develop over Baja California by Tuesday with broad troughing over the Plains and modest ridging over the CWA. A cluster of weakening convection from the higher terrain of Mexico may drift across the deep south Texas late tonight into Tuesday.
1020 AM EDT Mon May 31 2021 High pressure centered over the Upper Ohio Valley and Mid Atlantic region will gain even more control of our weather to end the long holiday weekend. Temperatures will be bit cooler than normal with most highs reaching the mid to upper 60s with a few locations near 70. Latest guidance suggesting a weak short wave trough will cross the region late Monday night and early tuesday. This wave will exit east by Tuesday afternoon with increasing sunshine and temperatures reaching the lower to mid 70s.
An upper ridge will build over the region through Tuesday for warm and sunny conditions. The ridge will shift east Tuesday night.
713 AM EDT Mon May 31 2021 Following a dismal holiday weekend, Memorial Day will be dry and much warmer across Central Pennsylvania.
918 AM EDT Mon May 31 2021 High pressure centered over the area today will move off to the mid-Atlantic coast tonight.
The islands stay cooler with water temperatures now around 80 in open waters and into the lower 80s in the bays. Lighter winds are expected tomorrow as the eastern US ridge shifts east.
The upper trough axis is still well west of Colorado at this time. Models show the trough axis over the CWA from our northeast corner to the southwest corner by mid afternoon. There may be just enough moisture and instability, for a slight chc of showers and storms, over the higher terrain. For Thu into Fri, an upper level high will build into the area. The GFS continues to show some moisture affecting the higher terrain while the ECMWF is drier. Highs will be even warmer as readings will be in the 80's both days over nern CO. The low cloudiness expected at DIA today should be in the BKN- OVC010-030 range through 00Z this afternoon, then come up significantly.
As the week progresses, a Low pressure system will push High pressure off the Atlantic coast.
417 AM MDT Mon May 31 2021 An upper level positive tilted trough is expected to track eastward towards the Midwest, with a ridge of high pressure coming on-board from the western seaboard. However, high-resolution models remain in fairly good agreement that much of the precipitation is expected to remain to the south, with better chances along the higher terrains and in the Rockie Mountains.
Seasonably cool conditions are present across the area this morning with temperatures mainly in the low/mid 50s under light NE-E winds. The cirrus won't have too much of an impact on temperatures today as the high pressure system to our NE moves farther east and developing southerly flow results in WAA. High temperatures this afternoon are expected to be mainly in the low 80s. A quasi-zonal upper flow pattern across the region today will gradually evolve into SW-NE upper flow as a trough develops in the Central CONUS. Deepening S-SW flow in the low-mid levels will occur on Tuesday as the trough moves closer to the region.
718 AM EDT Mon May 31 2021 Aviation - Dissipating thunderstorms from the NW this evening - Risk for Thunderstorms later Thu - Near seasonable High temps into Thu then warmer than normal - Dissipating thunderstorms from the NW this evening The atmosphere in WI becomes rather unstable this afternoon and evening. We will hold onto the low risk for thunderstorms in that region for this evening.
628 AM EDT Mon May 31 2021 Variable high cloudiness and high temperatures in the low to mid 70s can be expected today.