Aikyam-Lab/Synoptic-Bench huggingface dataset:
(The rest of today ) Region remains under the influence of a slow moving upper low centered near Memphis this morning.
157 PM EDT Sat May 27 2023 Moisture from a system along the Atlantic coast will get drawn into the region around a large upper level low.
203 PM CDT Sat May 27 2023 While high pressure continues to reside over the Great Lakes, upper- level moisture has been gradually returning this afternoon leading to the cirrus clouds overhead. Furthermore, the clouds will do little to impact our temperatures on Sunday with highs expected to top out in the upper 70s to lower 80s for inland locations, though the persistent easterly winds will keep values along the lake front in the low to mid-60s. Overnight lows will also remain mild with values in the low to mid-50s expected tonight and Sunday night. Yack In the wake of a Rex block drifting eastward toward the east coast early in the week, mid-level ridging will amplify across the central CONUS into central Canada through the remainder of the week.
The aforementioned upper disturbances will phase into one closed upper low during the overnight hours, and northwesterly flow will reinforce a dry and cooler airmass over the area.
Widespread rain chances will remain elusive through the upcoming week as heat gradually builds into the low 90s, though a stray shower or storm cannot be ruled out. No real sensible weather impacts are anticipated over the next several days as a pair of upper-level blocking patterns keep conditions stagnant across the Midwest.
(This evening through Sunday) The flow has become more zonal today between systems as the previous trough moves out and the next closed low starts to move in.
Large scale ridging remain dominant across the Upper Mid west with the moist/southerly blow still west of our CWA. Sunday-Sunday night: Influence of ridge may be decreasing as the day goes on, as a trough begins to slowly move east and the moist/unstable axis slowly moves east. The period starts with a broad upper level ridge over the forecast area. Strong low level jet will help increase moisture over the region as surface dewpoints rise into the low 60s. Due to deep mixing in the drier side of the upper ridge RH values have fallen to the teens across northwest MN, and while stronger winds have remain along and west of the Red River Valley (where RH values are higher) sustained winds have remain in the 15-20 mph.
306 PM EDT Sat May 27 2023 Moisture from a system along the Atlantic coast will get drawn into the region around a large upper level low.
CMiller (Issued 258 AM CDT Sat May 27 2023) Today through Sunday: High pressure will bring mostly clear skies through this weekend, aside from some passing high clouds at times. Cooler temps will continue near the lake under onshore winds.
1216 PM CDT Sat May 27 2023 (Today through Sunday Night ) Strong high pressure will bring an east/northeast wind into Arkansas this weekend.
Upper low centered over the region on Sunday will result in widespread rain showers, especially across northeast Tennessee and southwest Virginia. Temperatures will be generally below normal with the upper low, widespread cloud cover, and scattered rain showers. Discussion: The upper low centered across the Mid-Mississippi Valley will trek eastward towards the Tennessee Valley tonight and begin to phase with the stacked low near coastal South Carolina on Sunday. With the anomalous troughing across the region on Sunday as the closed, cutoff upper low becomes centered across the Tennessee Valley and Southern Appalachians, temperatures will be 15 to 20 deg F below normal for much of the area. We may hang onto some sunshine near Chattanooga but gradual increasing clouds is expected, especially later in the day with scattered convection near the upper low center.
Most locations will see southwest winds at 5 to 15 mph gusting to 25 mph but east of the trough axis, primarily along and southwest of a line from Heber to Window Rock, sustained afternoon winds of 15 to 25 mph with a few gusts to 35 mph are forecast.
Weak upper trough continues over the area this morning with main moisture on the Idaho side.
439 PM EDT Sat May 27 2023 High pressure will remain firmly in place across the Great Lakes through the long holiday weekend.
347 PM CDT Sat May 27 2023 (Issued 322 PM CDT Sat May 27 2023) Tonight through Sunday night: High pressure will linger through the short term leading to dry, quiet conditions with some passing high clouds and light east to southeast winds. Lows tonight may not tank as low as previous nights in spots owing to the thicker high cirrus expected and warmer temps aloft, but will still drop into the mid to upper 40s owing to the dry sfc dewpoints over the region. Highs tomorrow will rise into the low 80s away from the lakeshore, while east winds will again sabotage lakeshore locales, with their highs reaching into the low 70s right along the lakeshore to the mid to upper 70s for inland portions of the lakeshore counties.
Mins tonight will range from the low to mid 40s north and portions of the Allegenies to the upper 40s southeast. Model consensus favors increasing clouds and a very low chance for passing light showers near the Maryland border on Sunday afternoon associated with low pressure system over the Carolinas. Temperatures continue to trend warmer particularly over the northern half of CPA with fcst highs in the upper 70s to low 80s or +5-10F above late May climo.
Pattern Synopsis: Broad ridging will remain draped over the Great Lakes tonight as a cut-off low continues to spin over the southeast CONUS. Patchy frost cannot be ruled out across the typical coldest low- lying areas away from the lakeshores with temperatures dipping into the low to mid 30s locally.
Model consensus favors increasing clouds and a low chance for rain showers over the southern tier of CPA on Sunday associated with low pressure system over the Carolinas. Temperatures continue to trend warmer particularly over the northern half of CPA with fcst highs in the upper 70s to low 80s or +5-10F above late May climo.
1237 PM CDT Sat May 27 2023 (Today and tonight) Thunderstorms over the southern Texas panhandle this morning are nearing the apex of a weak upper ridge over west Texas. This is downstream from the larger- scale upper trough over the western coast of the U. Simultaneously, the weak upper ridge over Texas will drift eastward allowing for weak southwesterly flow over Oklahoma later today.
Temperatures throughout the Keys are generally in the mid 80s with dew points in the lower to mid 70s. High pressure remains over the eastern Great Lakes region with low pressure over the southeastern United States. Also, looking a little further east this blocky pattern continues in the Atlantic with high pressure over the central Atlantic east of Bermuda and low pressure to the north near Newfoundland.
223 PM EDT Sat May 27 2023 A complex upper level low in the Tennessee Valley area will be the main influence for weather across central Indiana through Sunday. Clouds will keep temperatures warmer than previous nights, with lows in the mid 50s expected. However, the lowest portions of the atmosphere will remain dry.
For temps, rich PBL moisture and wet soils will negate warmer highs a bit.
155 PM EDT Sat May 27 2023 Short Term/Aviation/Marine Vis and IR loops continue to show a feed of high level cloudiness moving northwest from the southeast US around the flow of an upper low over the Deep South. After that, the upper low moves off the southeast US coast and the ridge over the Great Lakes drifts eastward.
Warmer temperatures will occur across the area this coming week.
Although storms should begin growing upscale as they propagate east into our western counties this evening and interact with an improving LLJ, an outflow boundary near the Highway 70 corridor from Muleshoe to Plainview could serve as a focus for embedded low-level mesos and perhaps a few tornadoes.
220 PM CDT Sat May 27 2023 Current water vapor imagery shows an amplified ridge over much of the eastern portion of the U. At the surface, observations show an area of high pressure centered northeast of the CWA, causing surface flow to be light and generally out of the east.
A drier airmass has settled across our forecast area to the south of a mid/upper low pressure system over the Lower MS Valley and also to the southwest of another low located off the GA/SC coast. High temperatures look on track to range in the lower to mid 80s over most of the area.
Tonight will be quiet and slightly cooler than last night. Speaking of cooler temperatures, tomorrow should feel quite a bit cooler thanks to northerly winds and an upper low centered over southeast Tennessee.
407 PM EDT Sat May 27 2023 Mainly dry weather is expected for much of the area through the holiday weekend with high pressure over the Great Lakes region.
As the low lingers offshore, thunderstorm potential will shift slightly with the best potential (30-40% chances) along the Sierra, northeast CA, and far western NV. No signals for building high pressure ridge for the CA/NV region. Headwater flows have diminished a bit with cooler temperatures, and crests are slowly migrating down mainstem rivers.
1222 PM MDT Sat May 27 2023 The upper level trough to the west has begun to fill due to increasing convergence aloft as it gets absorbed into the jet stream pattern to the north. Sunday will see another secondary trough extend to the west along the west coast with even more isolated in nature storms and rain showers with the bulk of the energy again well to the east of the CWA pushing into the upper Great Plains.
with closed high over the Great Lakes/upper Midwest and a pair of upper lows over the southeastern U. Large scale troughing encompasses the western CONUS. 21z surface analysis shows 1026mb high pressure across most of Michigan/southwest Ontario. Pattern Synopsis: Broad ridging will remain draped over the Great Lakes tonight as a cut-off low continues to spin over the southeast CONUS. Patchy frost cannot be ruled out across the typical coldest low- lying areas away from the lakeshores with temperatures dipping into the low to mid 30s locally.
743 PM EDT Sat May 27 2023 Moisture from a system along the Atlantic coast will get drawn into the region around a large upper level low.
A complex upper level low in the Tennessee Valley area will be the main influence for weather across central Indiana through Sunday. Clouds will keep temperatures warmer than previous nights, with lows in the mid 50s expected. However, the lowest portions of the atmosphere will remain dry.
Anderson (Issued 322 PM CDT Sat May 27 2023) Tonight through Sunday night: High pressure will linger through the short term leading to dry, quiet conditions with some passing high clouds and light east to southeast winds. Lows tonight may not tank as low as previous nights in spots owing to the thicker high cirrus expected and warmer temps aloft, but will still drop into the mid to upper 40s owing to the dry sfc dewpoints over the region. Highs tomorrow will rise into the low 80s away from the lakeshore, while east winds will again sabotage lakeshore locales, with their highs reaching into the low 70s right along the lakeshore to the mid to upper 70s for inland portions of the lakeshore counties.
817 PM EDT Sat May 27 2023 A coastal low continues to slowly push northward along the SC coast pushing rain, gusty winds and much cooler temperatures into the area through tonight.
633 PM CDT Sat May 27 2023 Complex blocking pattern aloft continues across much of the conus with Kansas situated in a virtual col between the Rex type block over the eastern conus (high over the Great Lakes and a couple of lows over the Southeast, then ridge axis over the southern high Plains and mean trof over the West into the Rockies. The southern extent of this feature/lift will shift eastward also helping to advect the higher precipitable water(PWAT)/instability axis over the high Plains into central Kansas.
Widespread rain chances will remain elusive through the upcoming week as heat gradually builds into the low 90s, though a stray shower or storm cannot be ruled out. Geelhart No real sensible weather impacts are anticipated over the next several days as a pair of upper-level blocking patterns keep conditions stagnant across the Midwest.
Expect the Lane County Cascades to have the highest chance (25-50% chance) of thunderstorms through 7pm PDT. Tomorrow, high pressure builds as a lopsided ridge extends into our area.
1 inches) is still in place east of the the upper low spinning over northern Mississippi. Weakening forcing with this upper low will push further east this evening. In between the upper low and the afore-mentioned boundary, convergence will be maximized.
Model consensus favors increasing clouds and a very low chance for passing light showers near the Maryland border on Sunday afternoon associated with low pressure system over the Carolinas. Temperatures continue to trend warmer particularly over the northern half of CPA with fcst highs in the upper 70s to low 80s or +5-10F above late May climo.
An upper trough will maintain the shower and thunderstorm activity overnight, although there will be a decrease in coverage and intensity. Another round of showers and thunderstorms is expected on Sunday afternoon, mainly over the higher elevations near the Nevada border and in central Idaho.
Low pressure area over along the Pacific Northwest coast will deepen along the coast to around the Mendocino County area tonight.
637 PM CDT Sat May 27 2023 Current water vapor imagery shows an amplified ridge over much of the eastern portion of the U. At the surface, observations show an area of high pressure centered northeast of the CWA, causing surface flow to be light and generally out of the east.
610 PM CDT Sat May 27 2023 (Tonight) A rather quiet night is on tap for eastern Oklahoma and western Arkansas as high pressure prevails. (Sunday through Saturday) Sunday looks to be a mostly dry day across the area as high pressure continues at the surface a subtle ridge aloft nudges into the area.
Low pressure will bring widespread shower activity throughout the interior tonight and especially tomorrow with possible short lived thunderstorms. Meanwhile, clear and warmer conditions will build along the coast. A cutoff low pressure system slowly lumbering down the coast has continued to influence the areas weather. Cold air aloft associated with the low has continued to increase instability aloft, helping to further lift and thin the marine layer, For the first time ins several days, some streaks of clear sky are observable over the coastal waters. As the low moves along the coast, shower activity is expected to peak tomorrow. While showers cross the interior, offshore flow behind the low along with instability will most likely (80 % chance)totally scour out the marine layer tomorrow afternoon, actually bringing the warmest and clearest conditions the coast has seen this week.
The fairly tranquil weather today will give way to breezy to windy conditions Sunday afternoon and Memorial Day as a closed upper low drops from the Pacific Northwest into the central California Coast. The latest HREF and NBM do not indicate much potential for gusts over 40 mph except for remote ridgetops and no wind advisories are planned. Convection will be enhanced in the diffluent northeast quadrant of the closed low, but this will mainly be over northwest Nevada and the northern Sierra keeping the probability of thunderstorms only 10- 15 percent over far northern Inyo and Esmeralda counties the next couple days.
Look for overnight lows to fall into the middle 50s along the Nature Coast and into the lower to middle 60s south of I-4. Pleasant conditions are expected again on Sunday with highs a couple degrees warmer than today (middle to upper 80s) and RH values in the 40-50% range. The area of low pressure continues to lift out away from the area today, with drier and cooler air in place across the local area.
630 PM CDT Sat May 27 2023 (This evening through Sunday Night) Water vapor imagery shows a Rex block pattern east of the state; featuring a mid to upper level cutoff low positioned over the Lower Tennessee Valley/Southern Plains with a ridge positioned over the Great Lakes region. Weaker influence from the upper level ridge and increased cloud cover should hinder afternoon heating, keeping temperatures down by a degree or so compared to Saturday.
703 PM EDT Sat May 27 2023 Aviation Vis and IR loops continue to show a feed of high level cloudiness moving northwest from the southeast US around the flow of an upper low over the Deep South. After that, the upper low moves off the southeast US coast and the ridge over the Great Lakes drifts eastward.
610 PM CDT Sat May 27 2023 While high pressure continues to reside over the Great Lakes, upper- level moisture has been gradually returning this afternoon leading to the cirrus clouds overhead. Furthermore, the clouds will do little to impact our temperatures on Sunday with highs expected to top out in the upper 70s to lower 80s for inland locations, though the persistent easterly winds will keep values along the lake front in the low to mid-60s. Overnight lows will also remain mild with values in the low to mid-50s expected tonight and Sunday night. Yack In the wake of a Rex block drifting eastward toward the east coast early in the week, mid-level ridging will amplify across the central CONUS into central Canada through the remainder of the week.
(The rest of tonight) This evening far Eastern Oklahoma and Northwest Arkansas remained on the far western periphery of high pressure centered over the Great Lakes region. (Sunday through Saturday) Sunday looks to be a mostly dry day across the area as high pressure continues at the surface and a subtle ridge aloft nudges into the area.
1012 PM EDT Sat May 27 2023 An area of low pressure will approach the South Carolina and Georgia coast tonight. The low is forecast to move onshore north of the Santee River late tonight or early Sunday morning, drifting slowly northward through Memorial Day. As the low moves northward, the threat for light showers will decrease from south to north, as indicated in the previous forecast. Given temperatures beginning the day in the 50s and ongoing CAA, high temperatures are forecast to range from the upper 60s across inland SC to the low to mid 70s along the coast and SE GA.
643 PM CDT Sat May 27 2023 A large high pressure to the east keeps upper level easterly flow over the region. Low to midlevel flow continues out of the southeast and south respectively gradually advecting warmer air into the area.
The upper level trough along the western states has been bringing about the southwesterly flow but the 700 mb winds are at 20 knots and the 850 mb at 15 knots. As for the rest of the Memorial Day weekend, the troughiness of the upper level pattern will remain over the region and will continue to bring that southwesterly to westerly winds with the occasional afternoon gusts. Later in the week, the trough will be sticking around and it will bring temperatures down a few degrees below seasonal normals.
726 PM EDT Sat May 27 2023 High pressure will remain firmly in place across the Great Lakes through the long holiday weekend.
Upper low/trough over the Pacific Northwest will continue to spin moisture north into Montana tonight.
920 PM EDT Sat May 27 2023 * Mostly Cloudy and not as cool tonight Surface analysis this evening shows large, broad high pressure in place from the Great Lakes, across NY State, toward points southeast of Long Island. A deep tropical low pressure system was found off the SC coast. Dew points within the lower levels remained quite dry in the lower 40s. A complex upper level low in the Tennessee Valley area will be the main influence for weather across central Indiana through Sunday. Clouds will keep temperatures warmer than previous nights, with lows in the mid 50s expected. However, the lowest portions of the atmosphere will remain dry.
(Rest of today through Sunday) After a very active week, this holiday weekend will get a break as the upper level trough moves northeastward and drier air enters. Due to the northerly flow, afternoon temperatures will be seasonal and peak in the low to mid 80s across a majority of the region. Overnight, the lows will drop into the 60s in the interior while remaining in the low 70s across the eastern metro. With the RH (50- 60%), heat indices have the potential to reach the low to mid 90s across all of south FL - caution should be used when spending time outside.
Hot/dry/breezy conditions ahead of this system will mainly affect eastern Arizona this afternoon, including southern Gila County, however lighter winds predominate across the lower deserts.
658 PM CDT Sat May 27 2023 Showers and a few thunderstorms will persist mainly over portions of north Mississippi this evening as an upper level low pressure system moves east out of the region.
The upper level trough that plagued us earlier in the week has pivoted northeast and is fueling an impressive non-tropical low just off the South Carolina coast. In addition, satellite derived PWat imagery shows a clearly defined tongue of dry air pivoting in behind the aforementioned upper level trough. Temperatures could get down into the lower 70s and possibly near 70 degrees in one or two select locations. Showers are beginning to develop across the distant Straits of Florida south of the Lower and Middle Keys and will likely wax and wane through the overnight in place.
740 PM EDT Sat May 27 2023 Mainly dry weather is expected for much of the area through the holiday weekend with high pressure over the Great Lakes region.
AC3 Showers and a few thunderstorms will persist mainly over portions of north Mississippi this evening as an upper level low pressure system moves east out of the region.
1026 PM EDT Sat May 27 2023 High pressure will remain firmly in place across the Great Lakes through the long holiday weekend.
Key Messages: * Splendid rest of the Memorial Day weekend with dry conditions and large diurnal temperature ranges Tranquil weather persists across much of the Midwest thanks to sprawling Canadian high pressure of 1026 mb centered over the Great Lakes. A nearly identical regime is on tap for Sunday, although 850 mb temperatures are forecast about 3C warmer, and surface temperatures and dew points should accordingly be a little higher too.
Overnight composite analysis reveals a well developed Rex Block pattern across the eastern CONUS with the anchoring closed cold upper low centered across the southeast. Several mid level vorticity centers are noted rotating through the mean upper low; one advancing up through the Mid Atlantic coast and second wave rotating down through the Mississippi/Alabama region. Tonight: Closed cold upper level low will further deepen and become centered over South Carolina by morning, while the coastal low treks up through eastern North Carolina.
In the upper levels, a closed low is present over MS/AL. This low is expected to shift NEWD toward E TN/N GA today, then it will push into the Carolinas on Monday. With the low still close enough to C AL at the start, a few disturbances around the low could generate some shower and thunderstorms this afternoon and this evening for portions of C AL, mainly SW half.
Dry and seasonably pleasant conditions continue locally today through Memorial Day as the large upper low slowly moves through the Deep South into the Carolinas while the surface non-tropical low pressure system along the Carolina coast continues to produce gusty winds and disorganized showers and thunderstorms over portions of the SE U. and W Atlantic Ocean as weak high pressure holds over the FL Peninsula. The atmosphere will continue to moderate by mid week as another upper trough moves into the Gulf and low levels warm and moisten. Weak high pressure in the area will keep the dry conditions with light easterly winds in place then afternoon seabreezes near the coast daily through Memorial Day.
- The potential for localized heavy rainfall will continue this afternoon into this evening as an upper level trough lifts across the region.