Aikyam-Lab/Synoptic-Bench huggingface dataset:
A weak cold front brought scattered light showers this afternoon, but very little activity remains and is limited to mountaintops.
1229 AM CDT Sun Apr 21 2024 - Warmer temperatures in the 60s finally return for Sunday. The center of the high does not move right overhead, rather it moves from eastern MT and western SD, down into NE/KS by 12Z Sunday. Warmer air begins moving into the region on Sunday as upper level ridging builds east into the Dakotas. Look for highs to rise into the low to perhaps mid 60s for most locations. With south winds persisting Sunday night and warmer air aloft in place, lows should stay fairly mild and may struggle to get below 40 degrees.
Despite the drier weather, it will be unseasonably cool, especially Monday behind a strong cold front.
113 AM EDT Sun Apr 21 2024 Primary cold front has now moved offshore with high pressure building in from the west.
- A cold front tomorrow night will bring the potential (50 to 75% chance) for rain across much of eastern Nebraska and southwestern Iowa. Cold temperatures near or just below freezing this morning will quickly warm up into the 60s by this afternoon. Even warmer temperatures in the 70s are expected tomorrow afternoon before a cold front comes through tomorrow night. With dewpoints in the low 20s, relative humidities tomorrow afternoon will drop as low as 20 to 25 percent.
350 AM EDT Sun Apr 21 2024 Much cooler and wet today.
106 AM EDT Sun Apr 21 2024 It will be cooler and breezy, with scattered rain showers into early evening.
1149 PM CDT Sat Apr 20 2024 - Tonight could be the last night of freezing weather for the foreseeable future.
Sfc ridging will shift eastward toward the state today and tonight with H500 flow largely out of the N/NW. Sfc ridging will linger through Monday night with temperatures remaining below normal.
132 AM EDT Sun Apr 21 2024 High pressure will lead to dry but cool conditions through the weekend.
There'll be some very nice days mixed in with some cooler, showery, windier days. Today, an upper level low moves across southern Canada quickly and compresses the ridge over the region south. The trailing surface cold front with this system will cause some more showers and a cool down to about 5 degrees below average. Tomorrow through mid-week another ridge builds in with the ridge axis over central Montana.
As our ridge of high pressure shifts eastward today we return to more zonal flow aloft courtesy of a passing low farther north in central Canada. We've also got the associated cold front moving through the area today, but we will warm up ahead of the front anyway with highs in the mid and upper 60s through most of the Magic Valley, Snake Plain, and valley locations in the Southern Hills. As the cold front works eastward today, we will also see about a 20 percent chance of showers and storms, particularly in the Eastern Highlands. Behind the cold front, Monday will be a quiet day again with temperatures about 5 degrees cooler in the afternoon.
It does not appear that much of this is reaching the surface given the high cloud ceilings and the secondary surge of drier air that has moved into the area, so right now we will not include a mention of precipitation, but will continue to monitor obs and may add the mention of sprinkles if needed.
Ample sunshine, building 500mb heights, and a warming airmass all contributed to warmer temperatures this afternoon. Latest 24 hour trend shows many locations running 2 to 5 degrees warmer than yesterday. Given less morning clouds, even higher 500mb heights (building high pressure), and warming airmass (warmer 850mb temps) Sunday will feature even warmer temperatures.
A large area of high pressure will cover much of the central U.
Have seen a few sites briefly dip below freezing during breaks in the clouds but the time frame for any one site is short. Clouds exit with the departure of the low level moisture field this morning resulting in a breezy day with plenty of sunshine. Highs today will be in the low to mid 50s. Monday then continues to warm with highs in the 60s as the thermal trough across the area exits to the east. - More Rounds of Frost/Freeze Risk Midweek After a few warmer nights, a reinforcing shot of cold air descends on Lower Michigan for the middle of the week.
Expect morning lows along and north of US-36 to be at or below freezing.
1225 AM CDT Sun Apr 21 2024 (This evening through Sunday) Satellite and radar imagery are telling the story this afternoon showing a clear mid/upper level trough moving eastward across New Mexico with lift out ahead of it resulting in showers and thunderstorms now almost entirely east of the I-27 corridor. Will have to watch the area between the western edge of precip and the trough itself for any additional attempts to precipitate late this afternoon, but by 00Z only the eastern third of the forecast area should be under any threat for showers and storms, and by 03Z all meaningful lift should be east of the forecast area. In fact, with the trough shifted east of the area by then there should be mid/upper level subsidence.
929 PM PDT Sat Apr 20 2024 High pressure across the region will warm things up across the region through Monday.
(Today through Monday afternoon) WV imagery shows the upper trough now in central Texas, leaving West Texas and Southeast New Mexico under northwest flow aloft. The trough brought much-need rain to the area, mainly the Permian Basin/Western Low Rolling Plains. Despite being on the backside of the trough today, stratus will be slow to scatter out, and highs today will be a poignant ~ 20-22F below normal. Monday, a respectable rebound is in order as an upper ridge starts building in from the west, and stratus finally clears out.
1118 PM CDT Sat Apr 20 2024 - Temperatures are expected to drop to or below freezing this morning and tomorrow night.
421 AM EDT Sun Apr 21 2024 An upper level trough with unseasonably cold air aloft will swing through eastern Canada and the northeastern states late this weekend. A frost or freeze is expected in many areas of Central and Northern PA this morning and again Monday morning as high pressure moves overhead and the sky clears. The high clouds will slide to the east later this morning as the wave over the Carolinas scoots off the coast. However, the progged mins are between 31-33F for the ridge and valley region (which is roughly the part of PA that is SE of the Allegheny Front and NW of the Lower Susquehanna Valley). High pressure nosing in from the west crests over the Appalachian Mountains on Mon Temps rise nicely on Mon aftn- night.
This feature will move east of our area by sunrise ending the showers and storms as subsidence takes hold due to upper level ridging building over our area today through Monday. This allows for a cooler night tonight due to decreasing winds and a warmer day on Monday as cold advection ends and southerly winds return.
152 AM EDT Sun Apr 21 2024 A cold front moves slowly southward and through the area tonight. Sunday and Sunday night: Surface cold front will be situated south of the forecast area. Weak high pressure off to the north will push cooler air into the region on northeasterly winds, allowing a low-level wedge to develop. Lows Sunday night in the lower 40s north, to the upper 40s south. In addition, an isolated shower can not be completely ruled out as the main upper trough moves through. Clouds may still hang around behind the low through a good portion of the day, which will still help to keep cooler temperatures in the area, but still a little warmer than Sunday as highs do reach into the middle 60s. Overnight lows in the low to mid 40s.
- A cold front tomorrow night will bring the potential (50 to 75% chance) for rain across much of eastern Nebraska and southwestern Iowa.
310 AM CDT Sun Apr 21 2024 - Warmer temperatures in the 60s finally return today.
- West to northwest winds gusting to 50 mph will be possible Monday, with the highest gusts over western and far south central North Dakota.
139 AM EDT Sun Apr 21 2024 It will be cooler and breezy, with scattered rain showers into early evening.
The water vapor shows the upper decks departing OK/TX skies, but the low winds backing a little from NE to N is helping to scour out a little remaining low level moisture. The afternoon will be very nice with sunshine and warmer middle 60s across the area. Sunshine and light winds will make for highs generally in the lower 70s. (Monday Night through Sunday) The high pressure will be across the MS River, but still looking for below average readings in the low to mid 40s east of I-49 and upper 40s to low 50s to the west.
Skies will eventually clear later in the day and into this evening, with quiet and noticeably cooler conditions expected tonight as high pressure builds into the region from the west. As far as temperatures are concerned during the period, breezy northerly winds today will continue to advect cooler drier air into the forecast area. As a result, look for well below normal temperatures both today and tonight, as highs this afternoon top out in the low and middle 60s.
607 AM EDT Sun Apr 21 2024 High pressure will lead to dry but cool conditions through the weekend.
For tonight, confidence is increasing in the formation of low clouds ahead of a cold front. The high pressure that has been dominating the past week, keeping temperatures high and rain chances low, will finally have some competition.
Afternoon high temperatures will warm into the low - high 60s areawide. Skies will eventually clear later in the day and into this evening, with quiet and noticeably cooler conditions expected tonight as high pressure builds into the region from the west. As far as temperatures are concerned during the period, breezy northerly winds today will continue to advect cooler drier air into the forecast area. As a result, look for well below normal temperatures both today and tonight, as highs this afternoon top out in the low and middle 60s.
609 AM CDT Sun Apr 21 2024 (Today) Dense cloud cover and some light stratiform rain remains in place early this morning across the Tennessee Valley as an area of low pressure shifts across the Deep South. A deepening upper-trough will swing across the region today, pushing the true cold front through the area and ushering in a cooler, drier air mass.
Meanwhile at the surface, high pressure is situated over southwest Nebraska/nw KS and encompasses the majority of the Plains. This will allow a weak cold front to move through the forecast area during the day Tue and should push through the entire area by late Tue afternoon. Meanwhile, over the eastern half of KS, strong 850-700mb moisture transport, near and north of a lifting warm front, should support at least sct showers and storms into the early evening. Then for Sat both ECMWF and GFS dig a deep western CONUS upper trough and progress it very slowly east into Sun. The trend so far with this trough has been to slow it down and dig it deeper.
Cooler, more unsettled conditions look to return by the end of the week.
(Rest of Today) Satellite imagery shows an upper level trough slowly progressing east this morning. Out ahead of the trough, light drizzle or rain is occurring across the Tennessee Valley. As a cooler and drier airmass moves in this afternoon, skies should begin to clear out with sunshine expected later today.
615 AM CDT Sun Apr 21 2024 A large area of high pressure will cover much of the central U.
642 AM CDT Sun Apr 21 2024 (Today through Monday Night) This weakening broken line of showers/thunderstorms currently nearing the coast should be end of the organized activity for SE TX with this system and its associated cold front. Clearing skies and decreased winds will help to give us lows ranging from the mid and upper 40s north to the lower and mid 50s across the central/southern CWA tonight. Light NE/E winds will prevail with highs in the lower 70s.
729 AM EDT Sun Apr 21 2024 High pressure builds into the region early this week.
936 AM EDT Sun Apr 21 2024 High pressure will lead to dry but cool conditions through the weekend.
325 AM PDT Sun Apr 21 2024 Warm today and Monday with weak high pressure over the region.
This upper system, and an upper level disturbance to move across the Mississippi Valley/Midwest today, has contributed to the southward movement of the cold front, that is moving offshore per MSAS analyses.
(Now through Monday) A cold front continues to push south into the marine area this morning. The rain will end from est to east by this afternoon as the upper trough moves east and drier air returns to the region. A cooler airmass has moved into the area in the wake of he front and high temps today will only be in the low to mid 60s inland to near 70 along the coast. Lows tonight will range from the low 40s inland to low 50s along the coast.
2) Otherwise, a broad ridge pattern builds into the area this week resulting in mostly dry and seasonable conditions. WEATHER PATTERN OVERVIEW: A much warmer day is in store ahead of the next quick moving cold front tonight and associated low pressure system.
- Warmer, unsettled weather expected throughout much of the week with multiple chance for precipitation. Clearing skies and calm winds have lead to effective radiational cooling, so looking at a chilly morning for most with temperatures in the low 20s and perhaps a few teens in low lying areas. The low-level moisture has also lead to the development of patchy fog in these areas per ASOS and webcam observations. As mentioned, a drier and warmer airmass will take hold of the CWA today as a weak ridge axis passes overhead.
731 AM EDT Sun Apr 21 2024 (Today through Monday) For the remainder of the weekend, the prevailing mid-level atmospheric pattern over South Florida will gradually weaken as a deepening trough moves southeastward from the Plains into the Southeast. Simultaneously, high-pressure systems at the surface will shift eastward into the Atlantic, while a frontal boundary remains stationary over the Gulf Coast States and edges southeastward, expected to pass through Northern Florida tonight and into Sunday. This front is expected to lack strong dynamic support as its parent trough moves across the Eastern CONUS, diminishing the likelihood of widespread severe weather.
525 AM EDT Sun Apr 21 2024 High pressure builds into the region early this week.
A cold front is moving through the area this morning.
Kept a slight chance (10-20%) of mainly showers by this afternoon due to moisture remaining in place and combining with a long wave trough that will be moving east across the plains and TX through the afternoon. This upper system, and an upper level disturbance to move across the Mississippi Valley/Midwest today, has contributed to the southward movement of the cold front, that is moving offshore per MSAS analysis.
642 AM EDT Sun Apr 21 2024 Much cooler and wet today.
High pressure will bring dry and very mild conditions to Utah and southwest Wyoming today.
606 AM CDT Sun Apr 21 2024 (Today and tonight) Early this morning, the mid-level trough axis that brought much- needed rain to the area has moved eastward. The resulting stout inversion in the low-levels should help cloud cover to persist for most of the day. High temperatures are expected to reach the low to mid 60s, but this will depend highly on how much insolation can break through the clouds. Lows should fall into the low to mid 40s across the region.
Some high level cirrus will stream over the region today, and afternoon temperatures will be cooler than recent days. Meanwhile a strengthening thermal trough will induce the Chetco Effect today and bring some warmer temperatures (upper 60s) to the Banana Belt region. Dry conditions are expected today into Monday, with temperatures trending warmer for Monday. A change in the weather is expected for the latter half of the week as we return to a cooler and wetter pattern. High pressure will build in and remain just offshore today with a thermal trough developing along the south coast.
610 AM CDT Sun Apr 21 2024 - Warmer and sunnier today with temperatures getting into the 60s. A chilly night is taking shape across northeastern Kansas as surface ridging continues to move in from the north, pushing cloud cover further south. Expect temperatures here to range from around freezing to the mid 30s with a Frost Advisory in effect until 8 AM. For the remainder of the day, mostly sunny skies and ridging overhead will warm afternoon temperatures into the low to mid 60s. The next few days to follow will see temperatures fluctuate minimally with highs in the low to mid 70s.
440 AM CDT Sun Apr 21 2024 (Today through Monday afternoon) WV imagery shows the upper trough now in central Texas, leaving West Texas and Southeast New Mexico under northwest flow aloft. The trough brought much-need rain to the area, mainly the Permian Basin/Western Low Rolling Plains. Despite being on the backside of the trough today, stratus will be slow to scatter out, and highs today will be a poignant ~ 20-22F below normal. Monday, a respectable rebound is in order as an upper ridge starts building in from the west, and stratus finally clears out.
The trough that brought breezy winds and a few showers to the area yesterday has lifted to the northeast, and high pressure has started to nudge into the region, drying things out foe the rest of the weekend. With the passage of the cold front yesterday evening, a cooler airmass will be in place, and therefore temperatures today will trend about 5 to 10 degrees cooler than yesterday. Temperatures warm again on Monday as upper level ridging arrives.
652 AM EDT Sun Apr 21 2024 (Today and tonight) A cold front will finally make its way through the region today and with it will come another shot at showers and perhaps a few rumbles of thunder. Skies should gradually clear behind the front and cooler air filters in.
- Sunny today with warmer temperatures, some frost/freeze potential remains tonight. - Warmer and breezy Monday with scattered showers afternoon and evening.
636 AM CDT Sun Apr 21 2024 - Warmer temperatures in the 60s finally return today.
Surface analysis places an area of high pressure centered just to the southeast of Bermuda, with a frontal boundary draped across the Carolinas extending southwestward to the Gulf of Mexico. Temperatures are in the lower to mid 80s at most communities. High pressure building in its wake across the Southeast will quickly slide offshore into the western North Atlantic.
1214 PM CDT Sun Apr 21 2024 - Warmer and sunnier today with temperatures getting into the 60s. A chilly night is taking shape across northeastern Kansas as surface ridging continues to move in from the north, pushing cloud cover further south. Expect temperatures here to range from around freezing to the mid 30s with a Frost Advisory in effect until 8 AM. For the remainder of the day, mostly sunny skies and ridging overhead will warm afternoon temperatures into the low to mid 60s. The next few days to follow will see temperatures fluctuate minimally with highs in the low to mid 70s.
Cooler, more unsettled conditions return for the second half of the week.
We'll begin to see the northeasterly surface winds diminish this evening as a high pressure center moves closer and we lose mixing with the loss of heating. Some lower level cloud cover will limit the temperature drop tonight along the Rio Grande; otherwise, the remainder of the area should see lows in the lower 40s to lower 50s by sunrise on Monday.
Models then show a cold front dropping south across the area Monday night.
Frost advisory has been issued for far NW AR with temps falling into the low to mid 30 especially in colder valleys.
(This evening through Monday Night) Mostly sunny to partly cloudy skies can be found across all of Southeast Texas this afternoon in the wake of the late yesterday through early this morning rain producing system and associated cold front. High pressure settling into the area tonight combined with weakening winds and almost totally clear skies will help our overnight low temperatures to range from the low to mid 40s inland to the upper 50s at the coast. As the high moves off to the east, Monday's winds will swing back around to the east and southeast as the day progresses, and we will have high temperatures peaking in the low to mid 70s.
At the surface, the high pressure axis has shifted to our south as a cold front works into north Florida. Rain will come to an end in the evening, with drier air starting to move in over the region as high pressure builds over the southeast.
1201 PM CDT Sun Apr 21 2024 (Rest of Today) Satellite imagery shows an upper level trough slowly progressing east this morning. Out ahead of the trough, light drizzle or rain is occurring across the Tennessee Valley. As a cooler and drier airmass moves in this afternoon, skies should begin to clear out with sunshine expected later today.
Overnight low temperatures will be chilly dropping down to the low - mid 40s. Going into tomorrow a warming trend will take shape as high pressure begins to build into the area.
- Much cooler air will filter into the area behind a cold front today and tonight. Rains will gradually come to an end from the NW this afternoon and evening as much cooler air finally spreads into the region.
1158 AM CDT Sun Apr 21 2024 (Today and tonight) Early this morning, the mid-level trough axis that brought much- needed rain to the area has moved eastward. The resulting stout inversion in the low-levels should help cloud cover to persist for most of the day. High temperatures are expected to reach the low to mid 60s, but this will depend highly on how much insolation can break through the clouds. Lows should fall into the low to mid 40s across the region.
304 PM EDT Sun Apr 21 2024 High pressure will shift off to the southeast through the day on Monday, leading to dry conditions and some moderation in temperatures.
1239 PM CDT Sun Apr 21 2024 (Today through Monday afternoon) WV imagery shows the upper trough now in central Texas, leaving West Texas and Southeast New Mexico under northwest flow aloft. The trough brought much-need rain to the area, mainly the Permian Basin/Western Low Rolling Plains. Despite being on the backside of the trough today, stratus will be slow to scatter out, and highs today will be a poignant ~ 20-22F below normal. Monday, a respectable rebound is in order as an upper ridge starts building in from the west, and stratus finally clears out.
221 PM MDT Sun Apr 21 2024 - Warmer on Monday with a slight chance of afternoon showers and isolated thunderstorms.
An active spring-like weather pattern will continue with a few nice days mixed in with cooler, showery, and windier days.
/NEW/ /Today Through Monday Night/ Strong subsidence has overtaken the region today in the wake of a departing mid-level trough and the arrival of much drier air at the surface. Clearing skies coupled with northerly winds will result in a pleasantly cool mid spring afternoon with highs across North and Central Texas ranging in the low to mid 60s. This will allow overnight lows to dip into the low to mid 40s. Slightly warmer conditions begin to return tomorrow as winds become southerly once again.
1222 PM CDT Sun Apr 21 2024 (Today through Monday Night) This weakening broken line of showers/thunderstorms currently nearing the coast should be end of the organized activity for SE TX with this system and its associated cold front. Clearing skies and decreased winds will help to give us lows ranging from the mid and upper 40s north to the lower and mid 50s across the central/southern CWA tonight. Light NE/E winds will prevail with highs in the lower 70s.
In its wake, a cooler and drier airmass has entered in from the northwest. High pressure, centered over the Plains begins to filter into the Southeast tonight as the upper level trough axis shifts off towards the East Coast. For our Alabama counties, lower confidence in frost given slightly warmer conditions.
- Windy and much warmer Monday, with strong southwest winds.