Aikyam-Lab/Synoptic-Bench huggingface dataset:
Sunny to mostly sunny remains the rule in most places as the transitory ridge continues to move eastward over the plains today. With a large trough approaching the western CONUS coast, that leaves us under strengthening southwest flow as the jet moves overhead. A tightened surface pressure gradient associated with a cold front will push into the area Tuesday evening. As this trough approaches on Tuesday, there will be slight chances for precipitation mainly along the Wyoming border.
733 PM EDT Mon Apr 17 2023 High pressure will build overhead by midweek, keeping the area dry and sunny.
327 PM MDT Mon Apr 17 2023 Afternoon Discussion: Current Conditions: A surface warm front with the oncoming low pressure system has allowed temperatures to increase into the upper 50s and low 60s today.
843 PM EDT Mon Apr 17 2023 Forecast remains on track as High pressure with drier/cooler airmass filters in from the North-northwest, and under clear skies expect widespread below normal temps in the 40s over inland areas and near 50 degrees along the Atlantic Coast, and have continue to undercut NBM guidance by 2-4 degrees and closer to MOS text guidance. High pressure ridge axis slides just north of the region on Tuesday with steering flow becoming North-Northeast by the afternoon hours. This high will provide clear skies. Temperatures will be cooler than normal with lows dipping into the mid 40s inland, lower to mid 50s closer to the coast. The sea breeze will push inland Tuesday afternoon, limiting highs at the coast to the lower 70s, whereas inland highs will reach around 80.
A strong area of low pressure was located over the Great Lakes, which has set up a tight pressure gradient across Iowa and Illinois. Temperatures have rebounded where the sun has come out, reaching the lower to mid 50s in central and southern sections. It's much colder across the Highway 20 corridor due to remaining low clouds in this area. horticulture specialists suggest that sensitive vegetation across most of the outlook area is susceptible to freezing conditions.
Ongoing gusty winds will relax high as high pressure builds towards the region from the south. Elsewhere, low temperatures will mainly drop into the lower to middle 40s. Low temperatures Tuesday night will only dip into the lower to middle 50s.
Daytime highs were once again above normal, despite the cold front's reduction in the humidity and the dew point temperature. Due to an increase in the pressure gradient between the high to our northwest and the front to our south, strong northwest winds of 15 to 20 miles mph was the most notable weather component. Daytime highs will be in the lower to mid 80s.
719 PM EDT Mon Apr 17 2023 Aviation - Snow into this evening, Quiet Weather for Monday - Upper low moving through with occasional heavier snow showers but skin temps in the 40s are not allowing any accums even in the heavier snow showers.
744 PM EDT Mon Apr 17 2023 Increased ridging over the area along with weak cold air advection. Temperatures will have a warming trend through the week and high pressure will persist through the majority of the workweek.
Decreasing clouds and slightly warmer temperatures are in store for the afternoon. Then, another cold night with lows in the low to mid 30s, Precautions may be needed for sensitive vegetation.
Temperatures tonight will drop to the mid 60s across the East Coast and mid 50s along the interior, while tomorrow high temperatures in the low to mid 80s across the region. For Tuesday, winds will become more northerly and eventually northeasterly with drier air filtering down the peninsula as high pressure begins to take over the weather pattern. Temperatures will be in the low 80s on the east coast with mid 80s on the west coast under the northeasterly flow.
As a result, morning lows will be cooler than normal. Another day of efficient mixing is possible, with low level humidity again near or below critical levels in the low-mid 20% range.
1042 PM EDT Mon Apr 17 2023 An upper low will keep unsettled conditions over the area through this evening. Dry conditions return on Tuesday as high pressure builds in.
A well defined upper level low pressure system approaching the Pacific Northwest Coast this evening with an associated cold front reaching southeast oregon later tonight. The cold front will move eastward late tonight from Burns at around 05z to Ontario around 09z to Boise around 11z and finally Twin Falls around 16z. Travel and commute impacts will be minimal as surface temperatures will remain above freezing through the event.
Chambers Satellite imagery shows SW flow over the region ahead of a deep trof off the Pacific coast.
306 PM PDT Mon Apr 17 2023 Cooler temperatures will begin the week as a disturbance passes through the region.
748 PM EDT Mon Apr 17 2023 An upper low will keep unsettled conditions over the area through this evening. Dry conditions return on Tuesday as high pressure builds in.
612 PM CDT Mon Apr 17 2023 The lows tonight will be in the mid-to-low 30s.
610 PM CDT Mon Apr 17 2023 (This afternoon through Tuesday Night) High pressure centered along the Louisiana coast continues to direct a dry northwest flow into Middle Tennessee, with pleasantly cool temperatures today and very low RH values.
Upper ridging will remain in place across the forecast area tonight and most of Tuesday, with even milder temperatures expected for Tuesday afternoon.
735 PM EDT Mon Apr 17 2023 High pressure will be the dominant feature through the week. A cold front could move through early this weekend.
Current surface analysis places low over the Great Lakes into eastern Ontario, with ridge stretching through the eastern plains. Upper level analysis places low off the northwest Pacific coast, with ridge over the northern plains. For tonight, a weak initial short wave slides mainly over western portions of the area as upper ridge does a gradual progression east. On Tuesday, upper ridge continues to scoot over to the east as a stout short wave swinging around the base of the Pacific ridge works its way towards the Rockies. Elongated surface lee trough deepens, resulting in breezy southeasterly winds over the area.
829 PM CDT Mon Apr 17 2023 Clear skies rule the region this evening as high pressure dominates. With zonal flow aloft and plenty of sunshine, afternoon highs will be considerably warmer than today with many climbing towards 80 degrees. (This afternoon through Tuesday Night) High pressure centered along the Louisiana coast continues to direct a dry northwest flow into Middle Tennessee, with pleasantly cool temperatures today and very low RH values.
646 PM EDT Mon Apr 17 2023 An upper low will bring cooler temperatures with isolated to scattered showers tonight into Tuesday. Some snowflakes may mix in at times across the higher elevations. Warmer weather returns by the end of the week. As of 645 PM EDT, the surface occluded/cold front continues to push eastward across New England and the steadiest showers have ended. Temperatures should fall close enough to freezing for some snow showers to mix in at times across the higher elevations, especially the Adirondacks and southern Greens.
800 PM CDT Mon Apr 17 2023 The lows tonight will be in the mid-to-low 30s.
A decent radiational cooling set up should take place as a bubble of 1020-mb surface over the lower MS Valley slides into the service area that is fairly dry. Morning lows on Tuesday will range from the low to mid 50s along the immediate coast to the upper 40s inland.
(This afternoon through Tuesday) High pressure and dry conditions will continue through the short term portion of the forecast.
This system will bring a return of cooler and unsettled weather through mid-week. A cold front will push through the area late this afternoon and overnight bringing rain showers, potentially some isolated thunderstorms for the northern Sacramento Valley and surrounding terrain.
756 PM EDT Mon Apr 17 2023 An upper level trough over the region will lift out and be replaced by a building ridge the second half of this week.
After peaking today in the 40s, lows tonight should fall back below freezing, into the 20s. This will be in response to an approaching upper low that is expected to impact the area by mid- week. Highs for Tuesday will range from the low 40s in the Devils Lake Basin, to the low 50s in west-central Minnesota.
1024 PM EDT Mon Apr 17 2023 High pressure will build in from the southwest through Tuesday.
724 PM EDT Mon Apr 17 2023 High pressure will build in from the southwest through Tuesday.
1022 PM EDT Mon Apr 17 2023 High pressure will be the dominant feature through the week. A cold front could move through early this weekend.
628 PM CDT Mon Apr 17 2023 (Thru Tonight) South winds and rising dewpoints will yield overnight lows considerably warmer than last night's cold (sub-freezing in some spots) readings.
1051 PM MDT Mon Apr 17 2023 Current water vapor and upper air models show upper ridge over the lee side of the Rockies and Northern Plains this afternoon, with a closed Upper Low over the Great Lakes region. Upper ridge centered over the region should keep the area mostly dry, at least through Tuesday morning. Precipitation chances increase the latter half of Tuesday as the ridge slides eastward and troughing digs into the western CONUS. Cold front is progged to move through the region late Tuesday and Tuesday night, bringing chances for showers and thunderstorms.
The cold front that moved through the area yesterday is now located over the western Atlantic. Cooler and drier air has filtered into the region in the wake of the cold front and will stick around for the next 24 hours. Temperatures on Tuesday will top out around average in the low to mid 80's with overnight lows in the 50's and 60's.
128 AM EDT Tue Apr 18 2023 An upper level trough over the region will lift out and be replaced by a building ridge the second half of this week.
At the surface, a lee trough across eastern New Mexico is attempting to kick off some convection along the higher terrain. Visible satellite imagery this afternoon shows convection attempting to develop in eastern New Mexico along the higher terrain and thus storms will be a bit until they push east towards the South Plains. Tomorrow, southwesterly flow will return aloft ahead of the next approaching trough axis.
Isolated to scattered wintry mix and snow showers will likely continue in the near term as a low pressure system slow tracks north.
Quiet conditions are expected for today with warmer conditions gradually working in after a chilly start. Temperatures will continue to drop to around freezing by daybreak before rapidly climbing into the upper 50s to mid 60s. A broad ridge will push to the east during the daytime hours with plenty of sunlight expected. The aforementioned ridge will continue to push to the east during the overnight hours with a wind shift to the east late tonight. Modest moisture advection will push surface dewpoints closer to the mid 30s tonight which will help keep conditions warmer than this past night, but spots across the northeastern counties may fall back into the mid to upper 30s.
Warmer temperatures will return over the weekend as a ridge rebuilds across the area. A cold trough of low pressure currently just off the CA coast will continue to push east today. Tightening surface gradients ahead of the trough will allow for southwest winds to increase today across portions of San Bernardino, Clark, and Mohave Counties. With cooler air associated with the trough advecting into the area, we will see highs today about 7-10 degrees cooler than Monday.
330 AM EDT Tue Apr 18 2023 Discussion/Marine - Unseasonably cool through tonight - Brisk wnw flow caa will continue today and result in high temps only reaching the lower to middle 40s. A few flurries will linger through the early morning hours before ending as the upper trof axis continues to move further east. Partial clearing should develop this afternoon as upper ridging begins to build in from the west. Skies will clear tonight as the upper ridge builds overhead.
203 AM EDT Tue Apr 18 2023 High pressure will be the dominant feature through the week. A cold front could move through early this weekend.
439 AM EDT Tue Apr 18 2023 High pressure conditions, dry weather, and mostly clear skies will persist through today and overnight with winds shifting about to become more out of the northeast as the center of high pressure rotation drifts further towards the east. High temperatures will rise up into the upper 70s and lower 80s over inland areas and in the lower to mid 70s along the coast.
1236 AM CDT Tue Apr 18 2023 Clear skies rule the region this evening as high pressure dominates. With zonal flow aloft and plenty of sunshine, afternoon highs will be considerably warmer than today with many climbing towards 80 degrees. (This afternoon through Tuesday Night) High pressure centered along the Louisiana coast continues to direct a dry northwest flow into Middle Tennessee, with pleasantly cool temperatures today and very low RH values.
Decreasing clouds and slightly warmer temperatures are in store for this afternoon. Then, another cold night with lows in the low to mid 30s, Precautions may be needed for sensitive vegetation.
145 AM EDT Tue Apr 18 2023 High pressure will build in from the southwest through Tuesday.
359 AM CDT Tue Apr 18 2023 Summary: Quiet weather today as High pressure resides over the region.
As the low pulls away. Surface temperatures have lowered slightly so we are nearing the freezing mark. - Snow into this evening, Quiet Weather for Monday - Upper low moving through with occasional heavier snow showers but skin temps in the 40s are not allowing any accums even in the heavier snow showers.
113 AM PDT Tue Apr 18 2023 The cooling trend will continue today as the weather disturbance moves through our area, with temperatures in the valley in the low to mid 60's.
317 AM EDT Tue Apr 18 2023 A warming trend is expected through the week as high pressure will continue dominating the region. The next chance of rain arrives this weekend as high pressure departs and a cold front moves through the region. Today and tonight high pressure will control the region while becoming more centered over the area late this morning and early afternoon. With ridging building over the eastern US afternoon high temperatures will continue to climb with upper 70s in the northern Midlands to low 80s in the southern Midlands and CSRA. Even so with the ridging overnight lows will be several degrees warmer with low 50s across the forecast area.
1100 PM CDT Mon Apr 17 2023 (Tonight) High pressure at the sfc continues to move eastward across the western/central Gulf Coast states this Mon evening. Overnight temps will be a few degrees cooler compared to this morning, with lows mainly in the lower/mid 40s for most spots.
1106 PM EDT Mon Apr 17 2023 An upper level trough over the region will lift out and be replaced by a building ridge the second half of this week.
259 AM MDT Tue Apr 18 2023 Satellite imagery showed a SW flow over our region with embedded short wave impulses and pockets of Pacific moisture just upstream ahead of a deep trof moving onto the west coast.
Discussion: Upper heights will begin to rise today as troughing lifts northeast through New England. Despite increased influence from surface ridging, still expect another breezy afternoon today.
Expect overnight lows generally in the low to mid 50s.
136 AM EDT Tue Apr 18 2023 High pressure will build overhead by midweek, keeping the area dry and sunny.
354 AM EDT Tue Apr 18 2023 High pressure will be the dominant feature through the week. A cold front could move through early this weekend. Today/this afternoon: High pressure is expected to remain over the area at the surface, while flow aloft becomes zonal. Once again expect clear/mostly clear skies, and along with relatively dry low levels, we should see another relatively cool night, but likely a few degrees warmer than this morning. The region will remain under the influence of high pressure both at the surface and aloft. At the surface the center of high pressure, initially over the Deep South, will slowly shift eastward through the period. High temperatures will be several degrees above normal, warming into the low to mid 80s each day.
223 AM CDT Tue Apr 18 2023 Quiet night unfolding across the outlook area, with GOES satellite imagery showing clear skies locally and low clouds associated with upper low over southeast Canada, rapidly diminishing over northeast IL and southeast WI. Went near the higher end of guidance for highs today due to plenty of sunshine, increasing weak WAA aloft, and low surface dew points.
401 AM EDT Tue Apr 18 2023 Dry weather along with slightly warmer temperatures and gusty winds are expected today, creating increased fire danger.
With the increasing sunshine, warmer temperatures than the past couple of days are expected, but they are below normal for this time of year. Tonight, another cold night with lows in the low to mid 30s is expected.
1125 PM CDT Mon Apr 17 2023 The lows tonight will be in the mid-to-low 30s.
(Today and tonight) Warm again today with breezy southerly winds due to lee trough and increasing pressure gradient. In addition to the low chance for a few storms later today, increased fire weather conditions will be possible in parts of northwest OK. With the increasing dewpoints, warmer temperatures are expected tonight with lows only dropping into the mid 50s to low 60s.
1120 PM EDT Mon Apr 17 2023 An upper level trough over the region will lift out and be replaced by a building ridge the second half of this week.
118 AM EDT Tue Apr 18 2023 An upper low will keep unsettled conditions over the area through this evening. Dry conditions return on Tuesday as high pressure builds in.
The broad trough continues to move into the PacNW today, with diffluent southwesterly flow building across WY. As the trough sweeps east into southeast Montana, it starts to deepen, which induces deepening low pressure in the same general location.
400 AM EDT Tue Apr 18 2023 Isolated to scattered wintry mix and snow showers will likely continue in the near term as a low pressure system slow tracks north.
144 AM EDT Tue Apr 18 2023 An upper low will bring cooler temperatures with isolated to scattered showers today. Some snowflakes may mix in at times across the higher elevations. Warmer weather returns by the end of the week.
The forecast calls for highs in the lower to mid 80s, nil rain chances, and a little less breeze by this afternoon.
Most locations, however, should only reach the low to mid 80s. Overnight, rain chances will diminish, but a stratus deck will re- form across much of the area as the dryline retreats westward and a more humid airmass builds back in for the low-levels.
Low pressure is moving through central Idaho this morning. Idaho county into southwest Montana will experience the bulk of the precipitation with the higher terrain receiving a significant amount of snow. The low pressure and associated precipitation will continue to move northeast through the morning hours. A cold front will push through the region later this morning through the afternoon hours. While the valleys will see snow today, the roads will not be impacted given road temperatures will be well above freezing. A weak transitory ridge moves over the region on tonight into Wednesday morning causing a short respite in the shower activity. Wednesday afternoon through the remainder of the work week will remain cool and showery as a broad trough of low pressure continues to be the driving force over the northern Rockies.
This could lead to a period of freezing rain Wednesday morning.
Look for some high clouds this morning as the much advertised trough and associated cold front continue to march eastward. As far as the cold front is concerned, thickness values start dropping, as well as a distinct wind shift, will occur later this evening. 2 to 4 inches of new snow look to fall over the Flat Tops and central mountains with higher amounts for the northern mountains, especially the highest elevations of the Park Range.
BT Satellite imagery showed a SW flow over our region with embedded short wave impulses and pockets of Pacific moisture just upstream ahead of a deep trof moving onto the west coast. As that powerful upper trof on the west coast moves inland today it will result in an increasing diffluent region aloft with considerable energy tracking from western WY to eastern MT tonight with a stacked low near the MT/ND border Wednesday morning. This is a favorable track to bring us widespread showers this afternoon & evening, a few embedded thunderstorms and locally heavy rain (especially Billings eastward) followed by strengthening W-NW winds w/ the cold advection on the back side of the low tonight. Regarding wind, as the low deepens to our east/northeast overnight and into Wednesday, gusts will increase in our CWA later tonight.
Most locations, however, should only reach the low to mid 80s. Overnight, rain chances will diminish, but a stratus deck will re-form across much of the area as the dryline retreats westward and a more humid airmass builds back in for the low-levels.
Cooler temperatures and gusty winds will be the rule the next two days as an upper level trof moves through the wrn CONUS. High temperatures today, depending on location, will run 1 to 5 degrees cooler than yesterday with another 1 to 5 degrees of cooling on Wednesday.
648 AM EDT Tue Apr 18 2023 A warming trend is expected through the week as high pressure will continue dominating the region. The next chance of rain arrives this weekend as high pressure departs and a cold front moves through the region. Today and tonight high pressure will control the region while becoming more centered over the area late this morning and early afternoon. With ridging building over the eastern US afternoon high temperatures will continue to climb with upper 70s in the northern Midlands to low 80s in the southern Midlands and CSRA. Even so with the ridging overnight lows will be several degrees warmer with low 50s across the forecast area.
905 AM CDT Tue Apr 18 2023 (Issued 905 AM CDT Tue Apr 18 2023) Quiet weather is expected today as high pressure moves overhead. DDV (Issued 305 AM CDT Tue Apr 18 2023) Today through Wednesday night: Quiet, cool and dry conditions expected today as surface ridging works in and influence of mid level cyclonic flow and low level thermal trough ease. By this afternoon the high will dominate and a lake breeze may take shape. Surface warm front may try to lift north into parts of southern WI later Wednesday night.
Troughing combined with multiple embedded waves will result in windy conditions today and Wednesday.
Cloud cover will begin to diminish through Wednesday, with temperatures warming around 5 degrees warmer than today's highs in the upper 70s to mid 80s.
As the circulation drifts towards the forecast area a bit of Gulf moisture will begin to get trapped within the clockwise surface wind circulation, which will bump dewpoints up into the low 30s and PWATs could rise to around a half inch. However, skies are expected to remain clear under the subsidence and afternoon temperatures are expected to rise to the low 80s today.
620 AM CDT Tue Apr 18 2023 (Today through Wednesday) Upper troughs are located north of the Great Lakes and off the British Columbia coast this morning with ridging over the center of the country. At the surface, high pressure was centered just south of Grand Isle.
Warmer temps are on the horizon for late week. High pressure will gradually build and sunshine will become dominant from south to north through the day.
632 AM CDT Tue Apr 18 2023 Summary: Quiet weather today as High pressure resides over the region.
Current radar and satellite loops are indicating some development already start- out west, so no real arguments with ongoing POPs for today (which have the higher numbers west and lower east).