Aikyam-Lab/Synoptic-Bench huggingface dataset:
115 AM EDT Tue Apr 29 2025 High pressure will slide off of the North Carolina coast tonight into Tuesday, settling between the Carolinas and Bermuda through the remainder of the week.
128 AM EDT Tue Apr 29 2025 (Through Tuesday) A stalling backdoor cold front continues to be the focal point for showers and storms this evening. (Tuesday night through Wednesday night) Ridging will build in across the eastern US with high pressure building into the southeast.
pdf A stray shower may shift onshore to the immediate NE FL coast early this morning with a passing coastal trough. Easterly flow continues as high pressure shifts off the mid-Atlantic coast and begins to slowly shift southward tonight. Around seasonable temperatures with highs in the low 80s along the coast to mid 80s inland and overnight lows in the mid/upper 60s along the coast to upper 50s/low 60s inland.
916 PM PDT Mon Apr 28 2025 Dry and warmer weather, with marine layer low clouds each night and morning in the coastal areas and valleys, will continue this week. Cooler, cloudier, breezier, and probably wetter weather is expected this weekend as a low pressure trough arrives. This could push the marine layer back offshore for a couple of hours, as suggested by some of the high resolution models, but stratus will redevelop and/or continue to expand into coastal regions and then western valleys by early Tuesday morning. The clouds over the coastal basin are slowly and gradually dissipating under the spring sunshine this afternoon as a low pressure trough takes its sweet time exiting our region. A weak high pressure ridge aloft will bring warmer and sunnier weather Tuesday.
354 AM EDT Tue Apr 29 2025 (Today through Wednesday) 500mb analysis shows a ridge extending into the SE Gulf states from eastern Mexico. A mid level low pressure center is located over the four corners region of the country. Ridging over the SE US will flatten a bit as the mid level low center pushes eastward through today. As the low center moves east, it does fill by the time it crosses the Mississippi River.
Temperatures will remain cooler than climatological average today, but will overall be trending warmer this week. Otherwise, warmer than average temperatures continue until the end of the week. As the ridge of high pressure builds over our area, much warmer temperatures are in store for Tuesday until later this week, with highs reaching several degrees above average by Wednesday.
Issued by National Weather Service Gray ME 1213 AM EDT Tue Apr 29 2025 High pressure will crest south of the area tonight. A cold front will approach Tuesday and cross the region early Wednesday morning followed by high pressure building in from the west.
High pressure is over central ND at 08z. High pressure will move over the Red River valley at 18z and then eastern fcst area by 00z.
A mid-level ridge over Mexico has already started to slide eastward with the ridge axis expected to expand to the SE CONUS. 30 inches which is below normal and with a cap over the lower to mid levels, have maintained a low 15-25% chance for showers and thunderstorms tomorrow. Afternoon temperatures today and tomorrow will range from the low 80s along the immediate coast, mid 80s east to around 100 out west. Overnight lows will hover around the low to mid 70s region-wide.
The cold frontal boundary will continue its slow slog to the east throughout the day. - Frost Tonight into Wednesday morning In the wake of the cold front, Dry cold air will propagate over the Great Lake region tonight into WEdnesday morning. A building high pressure over the upper Midwest will create downsloping flow over Michigan dropping dewpoints into the 20s. The high pressure will be short lived as a change in the upper level pattern will stream Gulf moisture through the region through the latter half of the week.
221 AM MDT Tue Apr 29 2025 KEY MESSAGES: - A trough today will bring another round of rain showers to the region.
A quick passing trough will bring increased cloud cover and a slight chance for mountain showers on Tuesday.
High pressure and upper-level ridging over the southeastern U.
628 AM CDT Tue Apr 29 2025 (Today through Wednesday Night) Ridging across the Southern Plains/SE/E CONUS continues to shift eastward today as closed low approaches from the Desert Southwest. Subsidence and dry mid-lower levels should work to suppress rainfall today, though modest PWs and weak impulses preceding the low will keep rain chances from being zero. Wednesday should start to see more active weather as the aforementioned low/upper level trough pushes into the Southern Plains/Texas. 5 DegC/km, though the freezing level and WBZ level are rather high.
A stray shower may shift onshore to the immediate NE FL coast early this morning with a passing coastal trough. Easterly flow continues as high pressure shifts off the mid-Atlantic coast and begins to slowly shift southward tonight. Around seasonable temperatures with highs in the low 80s along the coast to mid 80s inland and overnight lows in the mid/upper 60s along the coast to upper 50s/low 60s inland.
Today's forecast is similar to yesterday in that breezes will lull somewhat as daytime heating promotes a thermal low on mainland Florida to weaken the influence of high pressure along the Eastern Seaboard. As this higher moisture arrives and heating peaks, showers and thunderstorms are expected to develop and push west off of mainland Florida. Opted to hold slight chance PoPs for now as the low level steering flow seems to keep most of the activity to our north. From synopsis, moderate to breezes today will freshen by tonight as high pressure continues to build in to the region. The high will remain fairly stagnant in place through the middle of the week, so breezes will oscillate between moderate to fresh on a weak diurnal trend with stronger breezes in the evening hours.
WEATHER PATTERN OVERVIEW: After freezing temperatures this morning generally near and east of MT-Highway 24, and increasing clouds from the northwest, expect today's weather conditions to include high temperatures near 70 degrees and the possibility of some scattered rain showers. With the responsible upper level open low pressure trough from British Columbia, most of the instability for thunderstorms today will be confined to north central and northwestern Montana. Later on Wednesday, as the upper-level low pressure trough departs eastward, a strong ridge of high pressure begins to build into our region from the west.
Wind Advisory until noon in northwestern areas and 3 PM in southeastern areas to cover a pop in wind gusts as mixing increases with both solar heating and a passing cold front. The cold frontal boundary will continue its slow slog to the east throughout the day. - Frost Tonight into Wednesday morning In the wake of the cold front, Dry cold air will propagate over the Great Lake region tonight into WEdnesday morning. A building high pressure over the upper Midwest will create downsloping flow over Michigan dropping dewpoints into the 20s. The high pressure will be short lived as a change in the upper level pattern will stream Gulf moisture through the region through the latter half of the week.
A pattern change over the weekend will bring overcast skies, cooler temperatures, strong wind and light rain. The inland extent is limited mostly to the coast as high pressure keeps the layer of cool-moist air relatively shallow. A SW-NE oriented ridge will dominate the pattern today, allowing fair weather.
543 AM MDT Tue Apr 29 2025 - Tuesday will be warmer for most locations, along with drier and less windy conditions.
- Much cooler today with highs in the middle 60s. A cold front is moving through the area as of 07Z. With a much cooler and more stable air mass across the forecast area, the threat of severe or even strong storms is very limited.
Over the Southeast, the southern end of the ridge remains strong through mid week.
A weak upper trough looks to move over northern California and southern Oregon today.
- Warmer for the weekend with a low level of diurnal shower/storm activity. The remnants of the southwest trough will lift across Colorado during the day Wednesday, quickly followed by the northern stream trough system that's moving into the Northwest today. Guidance ramps up PoPs pretty quickly during the day and this might be a bit suspect, especially in the morning as we might still be short on moisture ahead of the northern trough and its associated front. There still could be significant snow in the higher mountains, especially the northern Front Range.
Issued by National Weather Service Hastings NE 632 AM CDT Tue Apr 29 2025 - 20-25 degrees cooler today than yesterday. - Warmer for weekend and remainder of the forecast. Overall temps will take a brief hit before warming again with multiple chances for precipitation Due to the cold frontal passage last night, eastern Nebraska and southwest Iowa will be about 20-25 degrees cooler than yesterday. Highs yesterday were in the 80s to low 90s and today highs are expected in the low to mid 60s. The highest chances (greater than 50%) will be across extreme southeastern Nebraska and southwest Iowa. Even with the higher chances for precipitation, the amount of rain is expected to be less than 0.
634 AM CDT Tue Apr 29 2025 (Today through Wednesday) Deep South Texas will remain on the northwest periphery of 500 mb high pressure centered over the southern Gulf. High temperatures today and Wednesday will range from the 80s near the coast to the low to mid 90s along and west of the I-69E corridor. Lows tonight will fall into the low to mid 70s with increasing clouds. Elevated seas along the Lower Texas Coast will produce a Moderate Risk of rip currents at the local beaches.
Ridging aloft and high pressure at the surface remain in control of the weather across the forecast area today. High pressure and upper-level ridging over the southeastern U.
(Today through Wednesday) 500mb analysis shows a ridge extending into the SE Gulf states from eastern Mexico. A mid level low pressure center is located over the four corners region of the country. Ridging over the SE US will flatten a bit as the mid level low center pushes eastward through today. As the low center moves east, it does fill by the time it crosses the Mississippi River.
So, the little bit of moisture in the atmosphere seems to be confined to the lowest level. High pressure anchored across the region will continue to favor relatively quiet and warm conditions, but occasional pushes of additional low level moisture could lead to a handful of showers throughout the week. Moderate breezes today will freshen by tonight as high pressure continues to build in to the region. The high will remain fairly stagnant in place through the middle of the week, so breezes will oscillate between moderate to fresh on a weak diurnal trend with stronger breezes in the evening hours.
304 AM PDT Tue Apr 29 2025 Much warmer today with fewer coastal low clouds this morning.
446 AM MDT Tue Apr 29 2025 - Tuesday will be warmer for most locations, along with drier and less windy conditions.
(Today through Wednesday) Deep South Texas will remain on the northwest periphery of 500 mb high pressure centered over the southern Gulf. High temperatures today and Wednesday will range from the 80s near the coast to the low to mid 90s along and west of the I-69E corridor. Lows tonight will fall into the low to mid 70s with increasing clouds. Elevated seas along the Lower Texas Coast will produce a Moderate Risk of rip currents at the local beaches.
1230 PM CDT Tue Apr 29 2025 (Today through Wednesday) Deep South Texas will remain on the northwest periphery of 500 mb high pressure centered over the southern Gulf. High temperatures today and Wednesday will range from the 80s near the coast to the low to mid 90s along and west of the I-69E corridor. Lows tonight will fall into the low to mid 70s with increasing clouds. Elevated seas along the Lower Texas Coast will produce a Moderate Risk of rip currents at the local beaches.
343 PM EDT Tue Apr 29 2025 - Frost and Areas of Freezing Temperatures Tonight - Showers and Storms Wed Night through Thu Night - Frost and Areas of Freezing Temperatures Tonight Temperatures are dropping quickly behind a cold front in northwestern areas this afternoon. High pressure will move over Lower Michigan tonight, allowing winds to calm while skies become mostly clear. We will be starting frost/freeze alerts for our area up to US-10 (Mason through Clare county) given recent warmth and the increasing susceptibility of certain plants to freezing temperatures. Guidance suggests the most likely areas for widespread freezing temperatures will be from Oceana, Newaygo, Montcalm, and Gratiot counties to the north.
Although it'll be shifting east of the region, ridging aloft will maintain quiet and warm humid conditions across the forecast area tonight into Wednesday.
Time cross sections do start to finally trend toward drier low levels by Tue 22Z, which correlates well with latest surface analysis indicating high pressure centered over the South Dakota/Minnesota state line. So, once those skies finally do clear out later this evening, expect strong radiational cooling overnight and lows dipping well below normal into the low to mid 20s (upper 20s along lakeshores). 5th percentile of PWAT climo per NAEFS), RHs could fall to the low 30%s across the interior, though with recent wetting rainfall and relatively light winds (<20 kt gusts) no fire weather concerns are expected.
1229 PM CDT Tue Apr 29 2025 (Today through Wednesday) Deep South Texas will remain on the northwest periphery of 500 mb high pressure centered over the southern Gulf. High temperatures today and Wednesday will range from the 80s near the coast to the low to mid 90s along and west of the I-69E corridor. Lows tonight will fall into the low to mid 70s with increasing clouds. Elevated seas along the Lower Texas Coast will produce a Moderate Risk of rip currents at the local beaches.
Temperatures will trend warmer until late this week. Otherwise, warmer than average temperatures continue until the end of the week.
A low-amplitude upper trough and associated cold front will bring showers mainly to the higher elevations through tonight. 10) of an inch with little or no precip expected in the lower valleys.
Taking a quick peek at latest 12z data, it's looking like we will need a Flood Watch for at least McCurtain County, Oklahoma and Red River County, Texas beginning late tonight and/or during the day Wednesday for the potential for flood producing rainfall with the ejection of our upstream trough Wed/Wed Night. /05/ (Wednesday Night through Tuesday) Conditions forecast to improve on late Wednesday evening into the overnight hours as surface and upper low translate northeast into Missouri.
Issued by National Weather Service Hastings NE 1248 PM CDT Tue Apr 29 2025 - 20-25 degrees cooler today than yesterday. - Warmer for weekend and remainder of the forecast. Overall temps will take a brief hit before warming again with multiple chances for precipitation Due to the cold frontal passage last night, eastern Nebraska and southwest Iowa will be about 20-25 degrees cooler than yesterday. Highs yesterday were in the 80s to low 90s and today highs are expected in the low to mid 60s. The highest chances (greater than 50%) will be across extreme southeastern Nebraska and southwest Iowa. Even with the higher chances for precipitation, the amount of rain is expected to be less than 0.
This moisture will be moving out to the west later today and tonight with drier air returning as the easterly flow around high pressure increases.
A quiescent day is ahead across the region, as the system responsible for the cooler, unsettled weather of the past few days exits to the east, leaving sunny skies and lighter winds in its wake. The area of low pressure over the region will finally push eastward toward the Four Corners through the day today, allowing heights to continue to rise over the Desert Southwest. With a ridge of high pressure building over the southeastern Pacific Ocean and an exiting ridge over the Four Corners, our forecast area will sit beneath a northwesterly flow aloft.
This weekend, a low pressure trough will bring much cooler, cloudier, and windier weather with some showers. This on the backside of the low pressure trough taking forever to move completely out of our region. Today we get a fleeting ridge of high pressure aloft, which we'll feel with mostly sunny skies and higher temperatures.
The trough will track over the Northern Plains Wednesday night, bringing some decent energy with it. At the surface, high pressure currently over the central part of the country will get pushed east tonight as low pressure slides over the Rockies. The low, and its associated frontal boundary, will reach the western CWA by midday Wednesday, then will stall out over the eastern CWA Wednesday afternoon and evening before finally getting pushed east overnight. Low temperatures tonight will be in the lower to mid 40s. High temperatures on Wednesday will be in the lower 60s to lower 70s. Lows Wednesday night will be in the lower to mid 40s.
Issued by National Weather Service Gray ME 432 PM EDT Tue Apr 29 2025 A cold front will approach tonight, then cross the region early Wednesday morning.
(This evening through Wednesday night) Upper level ridge axis is oriented southwest to northeast across the southeastern US.
This weekend, a low pressure trough will bring much cooler, cloudier, and windier weather with some showers. WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO We have fair and warmer weather today, accented by some pretty cumulus clouds over the mountains. We can thank a fleeting ridge of high pressure aloft for the pleasant spring-like temperatures.
1124 AM MDT Tue Apr 29 2025 - Tuesday will be warmer for most locations, along with drier and less windy conditions.
815 PM EDT Tue Apr 29 2025 Showers and thunderstorms to continue until a cold front passes through the area tonight.
A predominant easterly wind flow will prevail over the eastern gulf waters as high pressure to the north ridges across Florida and into the gulf.
1011 PM EDT Tue Apr 29 2025 High pressure will prevail through the end of the week.
715 PM EDT Tue Apr 29 2025 High pressure will prevail through the end of the week.
620 PM CDT Tue Apr 29 2025 (This evening through Wednesday night) Upper level ridge axis is oriented southwest to northeast across the southeastern US.
A warm and humid airmass south of the front will only drop overnight lows down into the low to mid 60s. Upper level ridging amplifies across the Southeast on Wednesday resulting in a warm late April day. High pressure centered over GA will be the main influence on the local weather.
730 PM EDT Tue Apr 29 2025 (Through Wednesday) Our area is on the western periphery of an H5 trough that's over the Carolinas extending down into northeast Florida. The aforementioned H5 trough moseys east and is replaced by a ridge that will be centered nearly over the top of us Wednesday. Meanwhile, the Bermuda high is nosing into our region, which should keep the highest opportunities for rain along and west of the Flint/Apalachicola River Basins on Wednesday. Temperatures remain on the warmer side of normal with highs in the middle to upper 80s once again.
Deep layer ridging will persist over the forecast area tonight through Wednesday night, maintaining the dry and rather warm conditions across the area. Subsidence from the deep ridging will continue to result in above seasonal temperatures. DS/12 The pattern looks to get a little more active heading into late week and the weekend as the upper ridge finally breaks down and the upper trough finally pushes into the eastern US. At the surface, expect a cold front to slowly drift southward through the weekend with scattered to numerous showers and thunderstorms occurring each day along the boundary.
641 PM CDT Tue Apr 29 2025 Deep layer ridging will persist over the forecast area tonight through Wednesday night, maintaining the dry and rather warm conditions across the area. Subsidence from the deep ridging will continue to result in above seasonal temperatures. DS/12 The pattern looks to get a little more active heading into late week and the weekend as the upper ridge finally breaks down and the upper trough finally pushes into the eastern US. At the surface, expect a cold front to slowly drift southward through the weekend with scattered to numerous showers and thunderstorms occurring each day along the boundary.
A cold front providing additional showers and storms crosses overnight.
A subtle upper level trough is progged to move through the region tomorrow which will bring a low chance of very isolated showers and thunderstorms to the North Bay and areas near Monterey and San Benito counties in the vicinity of the Gabilan Range. Cold air advection in the upper levels with the passage of the trough and hi res guidance depicting sufficient low level moisture advection result in moderate instability of ~1,000 J/Kg.
Today's weather has been very quiet, albeit 20-25 degrees cooler, behind last evening's cold front. It's unclear just how organized activity will become along the cold front, and how well/long it will be able to persist as it advances southeastward Wed night. Even the highest-end solutions keep storms below severe levels and focused mainly W of the area.
1010 PM EDT Tue Apr 29 2025 In the wake of a cold frontal passage early tonight. it will become notably cooler for Wednesday with temperatures a solid 20 degrees lower than those from today. Canadian high pressure will support a wealth of sunshine though that will help to temper the cooler weather.
Cold front and rain showers have moved southeastward into southern Idaho this evening and should exit into Nevada by 3 AM MDT, as forecast.
A few showers also formed along a boundary that extended from the Lower Keys west into the nearshore waters. The wind profile remains mostly due east in the lowest 3000 ft AGL before becoming more northeast to east above 3000 ft AGL. From synopsis, fresh breezes maintain overnight as high pressure continues to build in to the region. The high will remain fairly stagnant in place through the middle of the week, so breezes will oscillate between moderate to fresh on a weak diurnal trend with stronger breezes in the evening hours.
708 PM EDT Tue Apr 29 2025 - Frost and Areas of Freezing Temperatures Tonight - Showers and Storms Wed Night through Thu Night - Frost and Areas of Freezing Temperatures Tonight Temperatures are dropping quickly behind a cold front in northwestern areas this afternoon. High pressure will move over Lower Michigan tonight, allowing winds to calm while skies become mostly clear. We will be starting frost/freeze alerts for our area up to US-10 (Mason through Clare county) given recent warmth and the increasing susceptibility of certain plants to freezing temperatures. Guidance suggests the most likely areas for widespread freezing temperatures will be from Oceana, Newaygo, Montcalm, and Gratiot counties to the north.
955 PM EDT Tue Apr 29 2025 High pressure off the coast will bring unusually warm temperatures through the rest of the week.
Temperatures are in the upper 40s to lower 50s and will drop to the mid 30s in lakes country and the lower 40s toward the Devils Lake Basin.
This will prevent overnight lows from getting as cold as this morning, with temperatures remaining above freezing. The trough will track over the Northern Plains Wednesday night, bringing some decent energy with it. At the surface, high pressure currently over the central part of the country will get pushed east tonight as low pressure slides over the Rockies. The low, and its associated frontal boundary, will reach the western CWA by midday Wednesday, then will stall out over the eastern CWA Wednesday afternoon and evening before finally getting pushed east overnight. Low temperatures tonight will be in the lower to mid 40s. High temperatures on Wednesday will be in the lower 60s to lower 70s. Lows Wednesday night will be in the lower to mid 40s.
A cold front moves through the region today bringing showers and even a rumble of thunder or two. On Thursday, an upper trough digs in over the northern Plains bringing cooler temperatures.