Aikyam-Lab/Synoptic-Bench huggingface dataset:
Winds will then become northerly with the passage of a dry, cold front Friday morning, then increase area-wide to be around 10 knots by Friday afternoon.
256 AM CDT Fri May 7 2021 The large upper level low near Hudsons Bay is expected to spin another short wave trough across the Great Lakes region today. After that, the large area of high pressure currently over Manitoba will move southeast and across the region tonight.
300 AM EDT Fri May 7 2021 Surface Analysis early this morning shows weak low pressure in place over Ohio. and a broader stronger high pressure system in place over Kansas and Missouri. Water Vapor imagery shows a deep upper low over northern Ontario with broad cyclonic flow in place over the Great Lakes and Ohio Valley. A sharp ridge was in place aloft over the Rockies. Tonight the short wave will depart the area to the east and the sharp ridging aloft over the Rockies is expected to build east across the plains.
Despite the reinforcement of cool air from the northwest today, temperatures should still manage to get back into the lower 60s under ample sunshine.
406 AM EDT Fri May 7 2021 Low pressure and its associated cold front will cross the area this afternoon.
Good radiational conditions will likely result in freezing temperatures by sunrise with colder locations in the mid 20s (similar to the previous night). Prefrontal trough has shifted south of our CWA with main front between Grand Forks and Fargo roughly where clearing light is. Falling temperatures tonight and winds diminishing as high pressure builds into the area. A bit more moisture into southeastern ND Friday night as the next upper trough over MT grows closer.
After a busy afternoon and evening with the severe storms that rolled through the region, a cooler, drier air mass is moving in from the NW. Temperatures have fallen into the low to mid 50s and will continue to slowly fall throughout the night into the 40s, thanks to the northerly flow and cool air advection taking place. Another cool night in store with lows dropping back into the lower to mid 40s behind the front towards daybreak. Fairly decent warm air advection should allow dewpoints to climb and lows to only drop into the mid upper 40s/lower 50s west of the I-65 corridor and cloud cover should help keep temperatures warmer there as well. Lows there will likely drop into the lower to mid 40s.
While surface ridging is the dominant feature this period and VFR is likely at all terminals, a passing weak disturbance will generate BKN cigs aoa 7-10 kft north and central through the afternoon.
321 AM EDT Fri May 7 2021 As the recent cold front pushes into south Florida today, a cooler and much drier airmass will fill into the area under breezy north and northwest winds. Afternoon temperatures today will still warm up into the low 80s to around 90 under sunny skies, but the air will feel significantly less humid than recent days with dew points in the 40s and 50s.
848 PM PDT Thu May 6 2021 An upper level trough moving inland over California will result in stronger onshore flow, higher humidity, and cooler weather through the weekend.
A trough pushing off the Rockies will help to initiate some thunderstorms to the west of our region this evening.
The NE GA mountains will take another day to recover as the cooler airmass remains through Sat.
By late afternoon we will begin to see the effects of the upstream trof and associated Pacific cold front, with showers/t-storms developing from Livingston to Harlowton before 00z.
The departing low pressure system will be close enough that we will have some breezy northwest winds today on the order of 20-25 mph in gusts.
107 AM EDT Fri May 7 2021 High pressure builds into the area tonight and Friday with low pressure expected to track well south and east of the area over the weekend.
205 AM CDT Fri May 7 2021 (This evening through Friday) With a strong upper level ridge still overhead allowing for dry, northwest upper level flow and overall high pressure dominating the area, the forecast for the short term remains dry for West Central Texas. Dew points will be on the rise early on Friday as the low level southerly flow increases, bringing with it some more gulf moisture. With a modestly strong 850 thermal ridge skirting our western counties, highs on Friday will be the in the mid to upper 80s areawide.
High pressure currently over the Lower Mississippi River Valley will slowly trek into the southeast U.
In general, the trough across the eastern U. AC Saturday upper level troughing across the northeast part of the country and along east coast into North Carolina will shift northeast as ridging moves in from the west. A cold front will have moved through the region by Saturday morning and temperatures will stay in the 50s higher elevations to the 60s lower elevations. Saturday night lower pressure over the central and southern plains will deepen and the old frontal boundary will lift north as a warm front.
A ridge of high pressure aloft will result in another day of above normal high temperatures today. Thereafter, global ensemble means showed the ridge shifting eastward in response to a weather system passing through the Intermountain West today.
Heading into the weekend, another Low pressure system will form in the central Plains, pushing into the Midwest Saturday night.
Showers continue along the coast this morning behind a well defined cold front. 300 mb levels show a relatively moist layer with some moisture also present in the lower levels of the atmosphere along the coast. Even with the potential for high clouds, there is still some potential for near freezing temperatures in the valleys. After tonight, we are expecting a gradual warm up in the temperature forecast with highs pushing into the lower 70's and lows only falling into the upper 30's west of the Cascades.
It will be much cooler today with scattered showers as a weak cold front slowly pushes through the region this morning.
A trough continues to bring unsettled weather to NV today with gusty winds and thunderstorms. Today will see further unsettled weather as a trough continues to pass over NV. The passage of this system will cool the temperatures with the highs being in the 60s and 70s today. The trough will leave the region late tonight allowing a dry northwest flow to move across NV. The northwest flow will cause Saturday to be somewhat cooler with highs mainly in the 60s.
431 AM PDT Fri May 7 2021 Showers continue along the coast this morning behind a well defined cold front. 300 mb levels show a relatively moist layer with some moisture also present in the lower levels of the atmosphere along the coast. Even with the potential for high clouds, there is still some potential for near freezing temperatures in the valleys. After tonight, we are expecting a gradual warm up in the temperature forecast with highs pushing into the lower 70's and lows only falling into the upper 30's west of the Cascades.
407 AM CDT Fri May 7 2021 Latest surface analysis is showing the main polar front well off to our south while a secondary cold front was moving south over the upper Midwest. The highest PoPs will then shift north of I-70 during the afternoon a warm front moves north into southern Missouri with the strongest low level forcing over the northern CWA. Highs today will be around 70 degrees as there will be some deep mixing and 850mb temperatures will be around 8C before the cold front moves through.
430 AM CDT Fri May 7 2021 Upper ridge centered over the Rockies this morning will slide east through the day as the next upper low moves over WA and into ID overnight. This low will spin over MT Saturday displaying the ridge to the east.
The warming trend continues as the ridge axis aloft moves over the Wyoming and Nebraska state line. Significantly cooler in the wake of a passing cold front and cooling north winds. Definitely cooler overnight in the wake of the cold frontal passage.
Water vapor imagery continues to show a longwave troughing pattern over the eastern CONUS, and a closed low system moving inland over the Pacific Northwest. Northeast KS remains under northwest flow aloft, but an upper ridge is nudging eastward from the Intermountain West and Four Corners region.
/issued 448 AM CDT Fri May 7 2021/ Relatively cool and dry conditions to prevail today, behind yesderday's cold frontal passage, and under northwest flow aloft. An upstream upper ridge over the high plains will lift east tonight and Saturday, deamplifying in the process.
Transient ridging aloft makes its way across the Plains today and tomorrow as a closed low descends down from Canada and settles over MT. Currently the SPC Day 2 Severe outlook has a slight risk in the general vicinity of this warm front. This will create a triple point set up where convection is expected to begin to develop during the afternoon on Saturday and expand to the northeast along the warm front into Saturday evening and overnight.
There is still considerable dry mid level air in place which will enhance winds and wind gusts across northeastern SD and west central MN until the high builds in this afternoon. North central SD will be close to critical fire weather conditions as east to southeast winds increase this afternoon ahead of an approaching low pressure system. As the low moves east, rain will spread across the region on Saturday.
Warm front will begin to extend northward through the daytime on Saturday allowing some moisture return and shower chances to increase. With the slow progression of the warm front, will see a decent temperature divide across the area tomorrow with highs in our NE remaining in the low 60s while those to our SW could reach the low to mid 70s.
A trough pushing off the Rockies will help to initiate some thunderstorms to the west of our region this evening. In addition to active weather, a cooler airmass is on the way for Saturday. Highs will range from the low 70s in southwest Nebraska to the low 50s in extreme north central Nebraska on Saturday. High temperatures on Saturday will be highly dependent on the passage of the front and how quickly cooler air can move in.
422 AM CDT Fri May 7 2021 Latest UA analysis and WV imagery shows a sharply amplified ridge over the Rockies upstream of a deep trough between the MS Valley and the eastern seaboard. Sfc ridging over the region has allowed winds to fully decouple, and this, combined with the dry airmass is resulting in another night of good radiational cooling. The dry and pleasant weather pattern will trend warmer and more humid over the weekend, as low level winds become more southerly.
Synoptically, ridging in W. /Saturday Night through Friday/ Saturday Night will begin a transition period aloft across the Southern Plains as weak upper ridging will quickly become west southwesterly flow as a disturbance begins to exit the Pacific Northwest and enter the Intermountain west. Meanwhile at the surface, southerly flow will continue to moisten the lower levels of the atmosphere in the form of higher dewpoints, higher humidity which combined with higher temperatures will result in increasing instability.
An upper level trough will pass over the region today bringing additional showers and possible thunderstorms.
Surface Analysis early this morning shows weak low pressure in place over Ohio. and a broader stronger high pressure system in place over Kansas and Missouri. Water Vapor imagery shows a deep upper low over northern Ontario with broad cyclonic flow in place over the Great Lakes and Ohio Valley. A sharp ridge was in place aloft over the Rockies. Tonight the short wave will depart the area to the east and the sharp ridging aloft over the Rockies is expected to build east across the plains.
946 AM CDT Fri May 7 2021 Temps have climbed into the low 40s and are on track for highs in the mid and upper 50s this afternoon. Temperatures are starting a slow recovery after chilly overnight lows ranging from the upper teens near Cando ND to just below the freezing point near Elbow Lake MN. Otherwise, increasing H5 ridging and subsident warming aloft should lead to mainly sunny conditions the rest of the day. Saturday will see a steady turn of winds out of the east to southeast as a low pressure system digs into the western Dakotas.
Low pressure passing by to the north will bring gusty winds today, resulting in elevated to near-critical fire danger. A passing trough will bring minor impacts to the region this afternoon, mostly in the way of wind and associated fire weather concerns, but also with very slight chances for showers and thunderstorms in our extreme northern areas. Secondarily, hi-res and synoptic models continue to hold on to some marginal showers and thunderstorms developing along the trough axis across mostly northern and north-central Nevada and pushing into Utah. The trough axis swings to the east of the region by Saturday morning and pushes a cold front into southern Nevada.
The next low pressure system will bring cooler temperatures to the region over the weekend.
939 AM CDT Fri May 7 2021 The cold front that brought the line of rain and thunderstorms through the area yesterday currently stretches from Atlanta, GA southwest into southern Alabama. Much drier and cooler air is in place this morning over the area as a result of northerly flow behind this front. Temperatures started out in the lower to mid 40s in many locations and have risen into the lower to mid 50s across most of northern Alabama and southern middle Tennessee. The ridge should be situated over southern MS/AL by Saturday morning. High temperatures should rise into the low/mid 70s to end the week. A moderation in temperatures continue, with lows ranging from the lower 50s NE AL to lower 60s NW AL.
Issued by National Weather Service Caribou ME 1018 AM EDT Fri May 7 2021 An area of low pressure will bring a narrow axis of rain showers into portions of northern New York later today, while Vermont stays dry. Still expecting an area of low pressure and narrow swath of rain showers to track eastward across central New York and into the Saint Lawrence Valley/western Adirondacks by late afternoon. For such reasons, high temperatures will be a bit cooler in New York (low to mid 50s) while in the upper 50s to low 60s across Vermont. At the same time, low-level easterly flow will help advect in relatively drier air from a downstream area of high pressure.
Temperatures were chilly in the lower to middle 40s, with likely some 30s in area valleys. High amplitude upper ridge axis was located over the Rockies early this morning with strong northwest flow continuing aloft over the central U. Some showers/thunderstorms may develop this morning to the west on the western side of the ridge and then shift east across western portions of the area by mid to late morning. The additional cloud cover and precipitation chances will keep temperatures in the west cooler than the east today with highs from the mid 60s to low 70s. There are still some decent differences in the deterministic models with respect to the low placement and how far north the warm front sets up on Saturday, which will have implications on how much convection develops over the area Saturday night.
/22/ Today and tonight: Cooler than normal and dry through the period. Early morning water vapor imagery/RAP analysis showed the circulation through an amplified upper level ridge over the Rockies and a large upper level trough over the eastern CONUS. This will result in a light return flow by sunrise Saturday morning but low temperatures will be in the low to mid 50s. Highs today will range from the lower 70s northeast to the upper 70s south. our normal highs run in the lower 80s.
It should become breezy by afternoon as the gradient tightens in response to developing low pressure over SW Kansas.
913 AM EDT Fri May 7 2021 High pressure builds across area from the north and west today through Saturday with low pressure expected to track well south and east of the area over the weekend.
329 AM PDT Fri May 7 2021 Breezy northwest breezes will prevail today along with cooler temperatures through the weekend. A band of light showers continues to steadily track eastward across eastern Pershing and Churchill counties early this morning as an upper-level trough moves across the region. These mainly virga showers will weaken and shift eastward this morning with mainly cooler conditions and breezy west-northwest winds being the main weather highlight today. The increased instability in the axis of the trough combined with some modest jet dynamics on the backside of the trough may pop a few additional light showers across portions of Lassen, Plumas, and Washoe counties this afternoon. Temperatures will cool a few additional degrees on Saturday with some freezing temperatures possible across Sierra valleys Saturday morning with otherwise seasonable daytime highs and lighter northerly breezes prevailing Saturday afternoon.
651 AM EDT Fri May 7 2021 High pressure builds across area from the north and west today through Saturday with low pressure expected to track well south and east of the area over the weekend.
723 AM CDT Fri May 7 2021 Temperatures are starting a slow recovery after chilly overnight lows ranging from the upper teens near Cando ND to just below the freezing point near Elbow Lake MN. Otherwise, increasing H5 ridging and subsident warming aloft should lead to mainly sunny conditions the rest of the day. Saturday will see a steady turn of winds out of the east to southeast as a low pressure system digs into the western Dakotas.
258 AM PDT Fri May 7 2021 A trough to the north will bring cooler weather over the next few days with extensive low clouds each night and morning from the coast into much of the western valleys.
Despite the reinforcement of cool air from the northwest today, temperatures should still manage to get back into the lower 60s under ample sunshine. Clouds will be on the increase late in the day as a warm front takes shape to our south. The period will begin unsettled with Eastern Kentucky positioned along an exiting trough to the east.
539 AM CDT Fri May 7 2021 Latest surface analysis is showing the main polar front well off to our south while a secondary cold front was moving south over the upper Midwest. The highest PoPs will then shift north of I-70 during the afternoon a warm front moves north into southern Missouri with the strongest low level forcing over the northern CWA. Highs today will be around 70 degrees as there will be some deep mixing and 850mb temperatures will be around 8C before the cold front moves through.
427 AM CDT Fri May 7 2021 Today and tonight: Cooler than normal and dry through the period. Early morning water vapor imagery/RAP analysis showed the circulation through an amplified upper level ridge over the Rockies and a large upper level trough over the eastern CONUS. This will result in a light return flow by sunrise Saturday morning but low temperatures will be in the low to mid 50s. Highs today will range from the lower 70s northeast to the upper 70s south. our normal highs run in the lower 80s.
However with time into this afternoon, the gradient is proggd to slacken with some weak troughing sliding south which may set up enough convergence with an evolving onshore flow to pop some shra. However, moisture in the lowest levels especially towards the surface will be pretty dry. This will carry some Fgen and enough moisture in the low to mid levels to bring some showers to the lakeshore region, particularly in east central Wisconsin. Overnight Friday into Saturday skies will clear out and allow temperatures to fall to the low to mid 30s which will likely yield potential for fairly widespread frost, which will likely require a Frost Advisory. Otherwise, Saturday will remain fairly clear with some potential for lake breeze clouds with temperatures likely to remain on the cooler side, especially as the lake breeze comes through given prevailing southeast winds.
An upper level ridge over the western CONUS looks to slide eastward today and cross the Rockies, entering the Panhandles. At the surface, lee side troughing is expected to build into eastern CO. The downsloping and LLTR in the eastern Panhandles will mean highs should reach the 90s for most areas with the highest temps in the east along the LLTR axis.
Boundary layer winds will begin to veer more south/southwesterly and increase in speed by later this morning, in response to the H50 ridge axis pivoting east during the day. Temperatures will be warmer than yesterday with the south/southwest winds and the ridge peaking ridge overhead. Showers and thunderstorms will initiate and attempt to move off the New Mexico mountains later this afternoon and likely struggle to sustain themselves as they mover east across the higher terrain of eastern New Mexico. South of the low and front, the dryline will race east across West Texas, and in our area becoming roughly oriented from Kent County to Childress County by late afternoon. At this time, the preponderance of the guidance keeps the atmosphere capped along the dryline during the afternoon and evening, although a couple of the high-res models do generate some isolated storm activity.
607 AM CDT Fri May 7 2021 The large upper level low near Hudsons Bay is expected to spin another short wave trough across the Great Lakes region today. After that, the large area of high pressure currently over Manitoba will move southeast and across the region tonight.
/issued 430 AM CDT Fri May 7 2021/ Upper ridge centered over the Rockies this morning will slide east through the day as the next upper low moves over WA and into ID overnight. This low will spin over MT Saturday displaying the ridge to the east.
/issued 321 AM EDT Fri May 7 2021/ As the recent cold front pushes into south Florida today, a cooler and much drier airmass will fill into the area under breezy north and northwest winds. Afternoon temperatures today will still warm up into the low 80s to around 90 under sunny skies, but the air will feel significantly less humid than recent days with dew points in the 40s and 50s.
520 AM MDT Fri May 7 2021 Current surface map shows high pressure slipping into the eastern Dakotas/Minnesota as upper level ridge shifts into the Northern Plains. Upper level ridge breaks down tonight with upper trough digging into the northern Rockies. Best chance of widespread showers/higher QPF continues to be across far northwest South Dakota late tonight through Saturday night as upper low cuts off over the northern Rockies.
A large scale upper trough was located from James Bay to the southeastern states, resulting in strong northwest upper flow across the forecast area.
448 AM CDT Fri May 7 2021 Relatively cool and dry conditions to prevail today, behind yesderday's cold frontal passage, and under northwest flow aloft. An upstream upper ridge over the high plains will lift east tonight and Saturday, deamplifying in the process.
1009 AM EDT Fri May 7 2021 Low pressure and its associated cold front will cross the area this afternoon. A secondary cold front will move through the area Saturday. High pressure will build toward the region Saturday night.
The highest chances for severe storms appear to be south of our area, but we will continue to monitor. At 300 a ridge was in place over the Rockies with a south to north jetstreak of 80 knots in northwest WA. This was associated with a trough just off the coast of the Pacific NW that had 12 hour height falls of up to around 120 meters at 500 mb. Thermal ridge at 500 mb stretched from AZ up into Alberta. Thermal ridge was also in place at 700 mb over the western US.
Thereafter, the front is expected to return northward as a warm front during the day Saturday.
The low-level ridge axis builds east along the northern Gulf Coast, SW return flow will begin to pick up across the Delta. NE lifting warm front will also increase WAA/moisture advection. Dewpoints will begin to increase from SW to NE in the low-mid 50s to low 60s by the afternoon while drier in the upper 40s in the NE. Even with some subtle mid- high clouds, increasing low-level thermal warmth & efficient mixing potential will help highs warm slightly above normal in the low-mid 80s.