Aikyam-Lab/Synoptic-Bench huggingface dataset:
326 AM CDT Sat May 30 2020 Short Term [Today and Sunday] This morning's water vapor satellite imagery indicates an upper level trough extends from the Great Lakes southwestward into the Lower Mississippi River Valley. As the Gulf breeze moves inland, it could produce enough forcing for ascent to trigger additional convection inland, with the highest chances across southeastern Acadiana. The upper level trough will exit the region this evening and upper level heights are expected to rise over the CWA during the day Sunday. This will result in warmer and drier conditions on Sunday.
Temperatures tonight remain on track to fall into the lower 30s for much of northwestern MN and portions of northeastern North Dakota. Will watch for continued clearing during the late evening and early overnight hours to assess the low temperature potential, but overall, temperatures appear to remain on track for now. Upper level pattern to start the period begins with northwest flow aloft as a strong ridge is in place in the intermountain west. and a trof over Hudson Bay.
1146 PM CDT Fri May 29 2020 06Z TAFs are VFR CAVOK next 24-36 hours as upper ridging takes place to suppress convection.
1157 PM EDT Fri May 29 2020 Northwest winds will be prominent now that main cold front has passed this evening. Mid level trough axis anchored over Lake Michigan mid afternoon will sweep across the local area through the evening hours. Brief increase in mid level ascent tied to this feature will then maintain the chance for a linear axis of low topped showers/isolated thunder to emerge along the attendant secondary cold front. Conditions Sunday then marked by a high degree of stability under building high pressure and increasingly confluent mid level northwest flow. Southeast Michigan will reside within the immediate downstream periphery of expanding upper level high pressure projected to encompass the central conus throughout the early-mid week period.
With clouds over our area, temperatures will be overall cooler today with highs in the mid to upper 60s. For tonight, could see a few more showers develop later at night under the influence of a return flow behind exiting high pressure to our east and increasing theta e advection in a developing low level jet.
252 AM MDT Sat May 30 2020 Warmer temperatures are expected this weekend with many areas seeing their warmest of the spring thus far. Isolated to widely scattered thunderstorms are expected over the mountain and foothills today, but confidence is low if they will affect the plains as progged soundings are showing a very strong cap in place over the plains thanks to strong E/SE winds and warm air at the mid levels as upper ridge shifts over our region. BT Ridge breaking cool front moves across Sunday and shifts the focus of storms to the eastern plains, mainly from Rosebud County eastward where low level convergence and higher dewpoints will be in place ahead of the frontal passage.
Temps should be similar to yesterday, maybe a few degrees warmer in the low to mid 60s. Even with some mixing and weak warm air advection, the air mass is dry enough to see lows drop into the low to mid 40s tonight.
Have focused corridor of additional showers and storms from far nern WY through s cntrl SD, consistent with location of best combo of isentropic ascent and upper jet forcing along the low-midlevel baroclinic zone. 20z surface analysis had ridge from central Canada into the southern plains. Warm front/lee trough located from central MT to western KS. Saturday, east/southeast low level flow continues as warm/front lee trough moves little. Thermal ridge building aloft will increase cap strength, but convergence along boundary and the Black Hills terrain could pop off an active storm or two late in the day/early evening.
345 AM CDT Sat May 30 2020 The CWA remains in northwest flow in between a 500mb ridge over the western US and a broad trough over the eastern US. Despite CAMs bringing at least some precip into the area, thinking this will struggle to reach the ground as forecast soundings in northern KS show a lot of dry air in the low levels. Highs in far northeast KS will likely stay in the low to mid 70s due to seeing more cloud cover, while the rest of the CWA should reach the upper 70s to low 80s. Subsidence then takes over Sunday morning as the ridge amplifies and builds across the area. Temperatures will then start their upward trend as southerly winds bring in much warmer air.
The latest water vapor satellite loop shows an upper low currently centered over the interior of northern Mexico near 24. On the eastern side of this low, high level cloud cover continues to move northward into south central Texas. It will take some time for the low-levels to moisten today, so we will keep the forecast rain free through early this afternoon.
Made slight upward tweaks to the high temperatures both days, given less clouds and precipitation.
Strong 594 dm upper anticyclone was centered over SE Arizona at midday. High pressure aloft will build northeastward over Kansas through the short term, resulting in a simple forecast. As a result, minimum temperatures sunrise Saturday will be noticeably warmer, in the upper 50s and lower 60s.
344 AM CDT Sat May 30 2020 (Today and Tonight) Early this morning, water vapor satellite imagery shows a southwestward moving upper low far south of our region in Mexico, while an upper level ridge expands over the 4 Corners Region and into West Texas. Other than some high clouds associated with the northern edge of the upper low, skies are clear across West Central Texas. Ridging aloft and in the low levels will result in dry weather and clear to mostly clear skies today and tonight. Some strengthening of the 850mb thermal ridge will likely bring a few degrees of warming today, with highs in the mid to upper 80s today and lows tonight in the upper 50s to low 60s.
331 AM CDT Sat May 30 2020 325 AM CDT Another pleasant day is in store across much of the area today with temperatures only warming up into the low 70s. A lake breeze is expected to develop by early afternoon which will begin to surge inland by mid afternoon aided by a backdoor cold front.
Lows on Saturday night will be in the mid 40s northeast to the lower 50s west. The period begins on Sunday with strong southerly winds bringing low level moisture and warmer temperatures into the Northern Plains.
1208 AM CDT Sat May 30 2020 This evening has been a much welcome respite from active weather! High pressure centered over south central Canada responsible for the tranquil weather tonight, and the forecast looks on track with a clear sky, and temperatures falling through the 60s into the mid and upper 50s by midnight-1AM. More cloud cover Saturday night will result in slightly warmer low temperatures, albeit still slightly below normal for the end of May. GKS An upper level ridge over the southwestern US will shift eastward into the Plains on Sunday.
302 AM EDT Sat May 30 2020 A noticeably cooler and drier, less humid airmass will move into the area for the last weekend in May with temperatures trending below normal to start June. Sfc cold front crossing the State College area around 06Z with post-frontal stratus across the Alleghenies per GOES-IR. However, expect an increase in cloud cover into the afternoon ahead of a secondary cold front. Max temps are forecast to be about 10 degrees cooler than yesterday in the mid 60s to upper 70s or near-seasonal averages for late May. Mostly clear tonight with lows ranging from around 40F in the northern tier to around 50F in the Lower Susq. Temperatures will continue to trend lower (cooler) and bottom out Sunday night.
Cold front which stretches from the northeast southward to the southeast will slowly move into our area this afternoon through tonight then south into the Florida peninsula Sunday. The supporting mid level trough will dampen as it slowly moves through the southeast with drier air on the backside of the feature. Once the trough swings through, dry air on its heels will effectively push the chances towards the Florida Big Bend early this evening.
Overnight low temperatures forecast to fall into the low to mid 60s.
As we get into our Sunday a weak cold front will stall in north Florida. This will cause ridging to push into south Florida.
Afternoon showers and thunderstorms developing each day over the mountains will drift over the lower elevations late in the day and during the early evenings. The upper high will shift slightly eastward on Saturday, centered right over NM, though heights will fall to 589dam as a weak disturbance rounds the northern periphery of the high.
1041 PM CDT Fri May 29 2020 (This evening through Saturday) Quiet weather tonight into Saturday as upper ridge continues to build into the region. Slightly warmer temperatures are expected tomorrow compared to today.
133 AM EDT Sat May 30 2020 Any lingering showers associated with a passing cold front will end by daybreak this morning. Then cooler and drier weather will be in store today behind a departing cold front, although a few isolated showers cannot be ruled out this afternoon in Central New York.
/Issued 939 PM CDT Fri May 29 2020/ Weak high pressure at the surface will continue to build into the region tonight with light winds/clear skies.
The upper ridge will expand across the southeast through the period.
242 AM MDT Sat May 30 2020 High pressure aloft will help warm temperatures to between 10 and 20 degrees above normal through the weekend. High pressure ridge axis currently directly over the area will gradually shift east, allowing for mostly sunny skies and very warm temperatures today with highs well into the 80s to near 90 degrees for lower elevations. A disturbance moving north on the upstream side of the ridge will cross the area quickly this evening. However, lingering subsidence from the ridge and only marginal moisture will likely hinder thunderstorm development. Any storms that develop will be high- based given meager moisture profiles in the lower levels.
this afternoon with an upper ridge over the Rockies. The upper ridge will slowly expand eastward through the weekend and by Sunday will be centered over the Plains. High pressure over the area through the weekend will keep dry weather in place. Dew points in the lower 50s are in northwest Arkansas with mid 60s in the southeast.
327 AM EDT Sat May 30 2020 Any lingering showers associated with a passing cold front will end by daybreak this morning. Then cooler and drier weather will be in store today behind a departing cold front, although a few isolated showers cannot be ruled out this afternoon in Central New York.
303 AM EDT Sat May 30 2020 Current radar imagery shows quiet conditions across our area in the wake of a departing cold front. In terms of temperatures, have afternoon highs climbing into the upper 70s with dewpoints only reaching the low to mid 50s thanks to NW winds. As we head into the overnight period, expect lows to fall into the low to mid 50s with the aid of radiational cooling. High pressure will be moving across the Midwest Sunday, making for another nice day across our region.
400 AM CDT Sat May 30 2020 The quiet pattern continues through the early part of Saturday, as surface ridging makes it presence. By this afternoon and evening a warm front will likely form across northwest Missouri, with temperatures along and south of the front in the upper 70s, and temperatures north of the front hovering around 70. Sunday will be a transition day between the cooler pattern that's been in place for a majority of May thus far and what looks to be a wholesale warm up for the early part of the upcoming week.
1212 AM EDT Sat May 30 2020 Cooler and less humid conditions are expected tonight into this weekend.
418 AM EDT Sat May 30 2020 Expect cooler and less humid conditions this weekend.
/NEW/ /Rest of Tonight through Sunday/ Quiet weather will continue through the weekend as mid level ridging builds into the Southern Plains. Sunday's activity may spread a little farther into the Hill Country as the upper trough slowly moves north. Subtropical ridging will push daytime temperatures above normal, and steady surface winds off the Gulf will assure seasonal humidity. The only potential disruption to an otherwise uniform week would be the upper low currently over the Sierra Madre. It is heading equatorward on the eastern/southeastern fringe of the upper ridge that will drift eastward toward our longitude this weekend.
Moisture will linger in the area Saturday night into Sunday morning as as the low level jet develops, showers are expected again early Sunday morning.
(Today and tonight) A building upper level ridge will keep the weekend dry and warm.
Temperatures have been slow to cool with much of the area still in the lower to upper 70s by 7z.
254 AM MDT Sat May 30 2020 Current surface map places high pressure across the eastern Dakotas, with stationary front backed up against the Rockies. keeping temperatures near the lower end of guidance. Ridge shifts a bit east for Sunday, with instability axis located from the Nebraska panhandle through the Black Hills into eastern Montana. Upper level ridge slowly flattens through the week. This low stratus may persist through much of the day across these areas, along with some BR/FG in higher elevations.
155 AM EDT Sat May 30 2020 A cold front will move through the region this afternoon. The axis of the upper trough will shift east across central NC today. Much more scattered convection will be found inland, and will be associated weak low pressure and weak pre-frontal trough over eastern NC. The trailing, and main cold front will merge with the pre-frontal trough near the coast by early this evening, then shift quickly offshore tonight. The mean flow will become more westerly this morning in the west, spreading east with the passage of the pre- frontal trough and cold front this afternoon. Temperatures will turn cooler with lows in the 50s. Upper troughing will be located from the Great Lakes to New England.
Seabreaze formation will be the driving influence of the precipitation tomorrow as the upper level low begins to slowly move west tomorrow morning. This will increase the moisture flux in the area increasing the chances of precipitation in the afternoon as the ridge moves east into LA. HiRes Model and TTWRF indicate a few isolated showers and possible isolated thunderstorms over the SW quadrant of the CWA as well as parts of the adjacent waters, which is where the highest amounts of moisture persists.
906 AM EDT Sat May 30 2020 A weak cold front will move slowly into the area this afternoon. Cold front which stretches from the northeast southward to the southeast will slowly move into our area this afternoon through tonight then south into the Florida peninsula Sunday. The supporting mid level trough will dampen as it slowly moves through the southeast with drier air on the backside of the feature. Once the trough swings through, dry air on its heels will effectively push the chances towards the Florida Big Bend early this evening.
Otherwise, mostly dry conditions and cooler temperatures can be expected this weekend. Steep low-level lapse rates will promote areas of modest instability, but a deep layer of warmer air above 800mb or so will prevent much vertical growth, keeping the showers short and weak overall. No change was made to the seasonable but cooler high temperatures.
605 AM CDT Sat May 30 2020 The quiet pattern continues through the early part of Saturday, as surface ridging makes it presence. By this afternoon and evening a warm front will likely form across northwest Missouri, with temperatures along and south of the front in the upper 70s, and temperatures north of the front hovering around 70. Sunday will be a transition day between the cooler pattern that's been in place for a majority of May thus far and what looks to be a wholesale warm up for the early part of the upcoming week.
Current radar imagery shows quiet conditions across our area in the wake of a departing cold front. In terms of temperatures, have afternoon highs climbing into the upper 70s with dewpoints only reaching the low to mid 50s thanks to NW winds. As we head into the overnight period, expect lows to fall into the low to mid 50s with the aid of radiational cooling. High pressure will be moving across the Midwest Sunday, making for another nice day across our region.
Mid-level low across the state of Zacatecas in central Mexico will bring next weather system as a vort max rounds the northern periphery of the low across South Texas today, moving northwest into the Mexican state of Coahuila south of the Big Bend for Sunday. PWATs will increase as the surface weak inverted trough slowly lifts north into the western Gulf, bringing isolated to scattered showers and thunderstorms today. Activity will move inland through the day with the theta-e ridge, diminishing in coverage heading into the evening hours with the loss of heating. This really depends on the convergence zone and how far the weak inverted trough moves north. As for temperatures, kept on the cooler side due to the increased cloud coverage and rain chances.
A low pressure system will continue to generate scattered thunderstorms with a potential for locally heavy rain today.
The CWA remains in northwest flow in between a 500mb ridge over the western US and a broad trough over the eastern US. Despite CAMs bringing at least some precip into the area, thinking this will struggle to reach the ground as forecast soundings in northern KS show a lot of dry air in the low levels. Highs in far northeast KS will likely stay in the low to mid 70s due to seeing more cloud cover, while the rest of the CWA should reach the upper 70s to low 80s. Subsidence then takes over Sunday morning as the ridge amplifies and builds across the area. Temperatures will then start their upward trend as southerly winds bring in much warmer air.
Northwest flow will persist across the Central High Plains today as an upper ridge over the Inter-Mountain West slowly progresses eastward. A lee trough is expected to develop over Eastern Colorado today with a warm front moving north through the region. Sunday, the ridge will move over the Central High Plains. Above normal high temperatures are expected with highs in the low to mid- 90s.
345 AM PDT Sat May 30 2020 Low pressure moves through today bringing cooler weather with showers and thunderstorms with possible locally heavy precipitation. 561 DM closed upper low approaching the Bay Area this morning with center progged to move inland invof of KSFO around 18z, then track through interior NorCal this afternoon. As upper low progresses inland later today, increasing SEly flow and upper level divergence combine over western portions of Shasta/Tehama counties, extending into the Coastal Range.
603 AM CDT Sat May 30 2020 (Today and tonight) A building upper level ridge will keep the weekend dry and warm.
An area of low pressure is located off the central California coast early this morning.
The h500 trough that kept temperatures cool the past few days is finally moving out of the our region, and temperatures will start their move slowly higher as an h500 ridge axis moves to western North Dakota by tonight. After some early patchy frost in the Turtle Mountains and in the southwest this morning, temperatures will rise into the lower 70s west, and the mid 60s east.
508 AM EDT Sat May 30 2020 A noticeably cooler and drier, less humid airmass will move into the area for the last weekend in May with temperatures trending below normal to start June. Sfc cold front crossing the State College area around 06Z with post-frontal stratus across the Alleghenies per GOES-IR. However, expect an increase in cloud cover into the afternoon ahead of a secondary cold front. Max temps are forecast to be about 10 degrees cooler than yesterday in the mid 60s to upper 70s or near-seasonal averages for late May. Mostly clear tonight with lows ranging from around 40F in the northern tier to around 50F in the Lower Susq. Temperatures will continue to trend lower (cooler) and bottom out Sunday night.
1015 AM EDT Sat May 30 2020 A noticeably cooler and drier, less humid airmass will move into the area for the last weekend in May with temperatures trending below normal to start June. Morning satellite clearly delineates a secondary cold front dropping through northwest PA and eastern Oh this morning. Max temps are forecast to be about 10 degrees cooler than yesterday in the mid 60s to upper 70s or near-seasonal averages for late May. Some low clouds may develop again across the NW Alleghenies, otherwise expect mostly clear skies tonight with lows ranging from around 40F in the northern tier to around 50F in the Lower Susq. Temperatures will continue to trend lower (cooler) and bottom out Sunday night.
Tonight: The high pressure center is expected to be centered overhead tonight with precipitable water values dropping to around 50 percent of normal. With that in mind, leaned toward cooler guidance for overnight lows. Temperatures may drop into the lower to mid 30s across central/north- central WI, while much of the rest of the area sees lows in the upper 30s to low 40s.
714 AM EDT Sat May 30 2020 A noticeably cooler and drier, less humid airmass will move into the area for the last weekend in May with temperatures trending below normal to start June. Max temps are forecast to be about 10 degrees cooler than yesterday in the mid 60s to upper 70s or near-seasonal averages for late May. Some low clouds may develop again across the NW Alleghenies, otherwise expect mostly clear skies tonight with lows ranging from around 40F in the northern tier to around 50F in the Lower Susq. Temperatures will continue to trend lower (cooler) and bottom out Sunday night.
507 AM MDT Sat May 30 2020 Current surface map places high pressure across the eastern Dakotas, with stationary front backed up against the Rockies. keeping temperatures near the lower end of guidance. Ridge shifts a bit east for Sunday, with instability axis located from the Nebraska panhandle through the Black Hills into eastern Montana. Upper level ridge slowly flattens through the week.
High pressure is building into Middle Tennessee following last evening's cold fropa, so look for abundant sunshine today and light/calm winds.
A broad upper level trough continues to progress eastward across the eastern CONUS and away from our area today with weak upper level ridging to our south out over the eastern Gulf of Mexico. Upper ridging then increases slightly over the area tonight through Sunday. Sunday looks rain-free as deep layer ridging builds over the area and a drier and more stable airmass builds over the area. Highs both today and Sunday will range from the upper 80s north of the Highway 84 corridor and lower 90s over the remainder of the interior, with some low to mid 80s along the immediate coast. Low tonight are expected to range from the low to mid 60s north of the I-10 corridor, mid 60s along the just south of I-10 and the lower 70s along the immediate coast.
720 AM EDT Sat May 30 2020 A noticeably cooler and drier, less humid airmass will move into the area for the last weekend in May with temperatures trending below normal to start June. Max temps are forecast to be about 10 degrees cooler than yesterday in the mid 60s to upper 70s or near-seasonal averages for late May. Some low clouds may develop again across the NW Alleghenies, otherwise expect mostly clear skies tonight with lows ranging from around 40F in the northern tier to around 50F in the Lower Susq. Temperatures will continue to trend lower (cooler) and bottom out Sunday night.
Weak troughing aloft will pass across the southeast U.
558 AM CDT Sat May 30 2020 325 AM CDT Another pleasant day is in store across much of the area today with temperatures only warming up into the low 70s. A lake breeze is expected to develop by early afternoon which will begin to surge inland by mid afternoon aided by a backdoor cold front.