Aikyam-Lab/Synoptic-Bench huggingface dataset:
The WPC surface analysis shows high pressure draped over the region, and this will help to maintain light to gentle easterly breezes today. Nighttime GOES-19 imagery shows some scattered cloud coverage, but this won't do much in terms of blocking out the sunshine today. High pressure will remain the dominant synoptic feature through the week, and the only appreciable impact to our sensible weather will be freshening breezes during the middle of the week as the pressure gradient associated with this high tightens. From synopsis, an area of high pressure encompassing the southeastern U. A period of fresh breezes is expected during the middle of the week as the high pressure strengthens, but breezes will slacken again by the end of the week.
By Monday, a mid/upper level trough will lift into the Plains with a dryline advancing eastward into the Southern Plains.
The period after severe storms Monday will be dry as a very large ridge will develop over the CONUS.
A pattern change will bring warmer and drier weather through the work week. A nearly cut-off low pressure system has drifted towards the CA/NV border, and the Bay Area is now firmly in the back-side environment.
Otherwise, another warmer than normal night is on tap.
Cooler temperatures today and tomorrow. A low pressure center is centered over Las Vegas based on the 8Z water vapor imagery. Heed any fire restrictions and let's do our part to prevent sparks! The rest of the week, temperatures will start to trend warmer after today. The synoptic pattern will replace the trough with a ridge. Ensemble models show a weak cyclonic rotation passing through under this ridge.
- Turning very warm and breezy Monday, with highs in the lower 80s.
100 AM EDT Sun Apr 27 2025 (Rest of today through Sunday) A pair of high pressure systems, one over the NE Gulf and another over the western Atlantic will keep things primarily dry this weekend. Low temps tonight will range from the lower 60s inland to around 70 close to the Atlantic coast.
447 AM EDT Sun Apr 27 2025 Drier and cooler conditions are expected into Sunday in the wake of a cold front.
Beside the low-clouds, areas of high/mid-level clouds will move across the region producing partly sunny sky. The building surface ridging will bringing drier dewpoints into the area especially areas along and north of interstate 40. For Tonight, surface ridging and dry airmass will allow produce good raditional cooling conditions.
As such, this forecast update will indicate slightly cooler highs in the mid 60s to low 70s.
149 AM EDT Sun Apr 27 2025 High pressure will enter the region from the northwest tonight and remain over the area Sunday and Monday.
349 AM EDT Sun Apr 27 2025 Drier and cooler conditions are expected into Sunday in the wake of a cold front.
It's a fairly strong drizzle signal, with pretty solid saturation through the lowest 0. As expected, today ended up as another cloudy and cooler-than- normal day across the area. As of 3pm, there are still some light rain showers near the Highway 281 corridor in Nebraska, and these will continue to steadily move eastward and out of the area this afternoon. Lingering fog, showers, and cloud cover may keep Sunday on the cooler side as well, although it is expected to be warmer than today, with most areas at least approaching the 70s. A few more storms could develop early Monday morning as the cold front moves into the area, but even this is a relatively low chance (20-40%).
215 AM EDT Sun Apr 27 2025 High pressure overnight through early parts of the work week, becoming unsettled again midweek. High temperatures today will be a little warmer than yesterday, with mid to upper 60's across the lowlands and low to upper 50's across the mountains. Some locations may see cooler temperatures with efficient radiational cooling overnight, namely in the valleys.
Much of the area will experience an increase in moisture through the day across central and eastern Kansas with dewpoints rising into the lower to mid 60s. The energy from the southwest mid level trough will eject from New Mexico into Nebraska while phasing with a northern stream trough across the Dakotas. Forecast soundings show some curvature in the hodographs with veering winds in the low levels.
Otherwise, partly cloudy to mostly sunny skies will prevail this afternoon, while renewed upper level ridging overhead favors another day of highs in the mid to upper 80s, with some sites reaching the 90 degree mark. /26/ (Monday Night through Sunday) By Monday night, the axis of the pronounced upper level ridge which has sustained these well above average temperatures will be in the process of being pushed eastward out of the Four State Region by a deep upper level longwave trough positioned over much of the western CONUS. This trough will be the catalyst behind a more unsettled pattern which will define much of the week. As the trough loses its first closed low, it will develop a pronounced positive tilt as it deepen and reorganizes itself, potentially around a new closed low.
- Dry weather with progressively warmer temperatures can be expected today and Monday.
237 AM CDT Sun Apr 27 2025 - Windy and much warmer today with strong south winds.
303 AM EDT Sun Apr 27 2025 Canadian high pressure will build into the region through Monday.
340 AM EDT Sun Apr 27 2025 Drier and somewhat cooler air will spread over the area today following the passage of a cold front. Key Message(s): - A beautiful day of weather is expected across the area Cold front continues to lazily push towards the region, analyzed across the northern half of the forecast area as of 3a. This should continue to shift southward, with cooler and drier air filtering in as it does so.
This will keep warm and dry conditions across the region again today, with highs in the lower to mid 90s (mid to upper 80s at the coast).
Southerly flow and an open Gulf ahead of the low will keep moisture pumping northward. Large hail and strong winds will be the main threats, but can't rule out a tornado south of Pierre as 0-1 km helicity and CAPE increase with the low passage. Exact placement is a little unclear, but the cold front/dryline will be the focus for severe storm redevelopment near I-29 on Monday afternoon.
A surface boundary that has stalled over the Southeast washes out and a more organized southeast to southerly flow becomes established over the Lower Mississippi River Valley and western half of the Southeast in response. 6") see a drop Monday into Monday night (to around 1") as subsidence created drier air in the mid and upper levels over the Gulf moves inland over the Lower Mississippi River Valley. Subsidence from the upper ridge will keep temperatures well above seasonal norms through the Near Term. Low temperatures in the low to mid 60s are expected north of I-10, mid to upper south to the coast are expected Sunday and Monday nights.
Amplified troughing across western CONUS, with the upper low circulation centered over the Great Basin, will bring the coolest temperatures of this feature to the region today. While the core of the upper level jet from this feature will slide east of the region today, breezy conditions will continue across the region, particularly the higher terrain peaks in Gila County this afternoon.
Ridging will continue to build over southeast CONUS following today's passage of a strong mid latitude system through New England. This will allow high pressure to strengthen along the Eastern Seaboard promoting a freshening of breezes into tomorrow night. From synopsis, an area of high pressure along the Atlantic coast of southeastern U. A period of fresh breezes is expected during the middle of the week as the high pressure strengthens, but breezes will slacken again by the end of the week.
529 AM EDT Sun Apr 27 2025 - Dry weather with progressively warmer temperatures can be expected today and Monday.
632 AM EDT Sun Apr 27 2025 Dry and slightly cooler high pressure moves in today and Monday.
634 AM CDT Sun Apr 27 2025 (Today through Monday) Deep South Texas will remain under the influence of high pressure at the surface and aloft. High temperatures today and Monday 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.
851 AM EDT Sun Apr 27 2025 Canadian high pressure will build into the region through Monday.
534 AM CDT Sun Apr 27 2025 - Windy and much warmer today with strong south winds.
636 AM EDT Sun Apr 27 2025 High pressure will keep dry conditions across the region through Monday.
High pressure will continue to dominate today, with very warm and dry weather for most of the day. This will keep warm and dry conditions across the region again today, with highs in the lower to mid 90s (mid to upper 80s at the coast).
A mostly dry weather system will bring cooler temperatures and elevated winds today, with just a slight chance of a light shower in far northern Arizona.
1048 AM EDT Sun Apr 27 2025 High pressure will keep dry conditions across the region through Monday.
631 AM CDT Sun Apr 27 2025 (Today) An upper level low moving across the New England region, as it departs the coast, will induce upper level ridging across the southern CONUS.
(Today through Monday) Deep South Texas will remain under the influence of high pressure at the surface and aloft. High temperatures today and Monday 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.
737 AM EDT Sun Apr 27 2025 Drier and cooler conditions are expected into Sunday in the wake of a cold front.
Cooler and drier across the area today in the wake of a departing system over California.
623 AM EDT Sun Apr 27 2025 Drier and somewhat cooler air will spread over the area today following the passage of a cold front. Key Message(s): - A beautiful day of weather is expected across the area Cold front continues to lazily push towards the region, analyzed across the northern half of the forecast area as of 3a. This should continue to shift southward, with cooler and drier air filtering in as it does so.
(Today through Monday) 500mb analysis shows ridging across Mexico that extends into the northern Gulf. A low pressure system is across southern NV. The low pressure system will move east and fill through Monday. The ridging across Mexico and the northern Gulf will build northeastward into the southeast states. This boundary will slowly move south through the day as high pressure builds in from the north. The high center currently across the western Great Lakes will move east through the day and then offshore the mid Atlantic coast by early Monday with a wedge building in from the NE. The highest pops should be across the southern quarter of the CWA.
Beside the low-clouds, areas of high/mid-level clouds will move across the region producing partly sunny sky. The building surface ridging will bringing drier dewpoints into the area especially areas along and north of interstate 40. For Tonight, surface ridging and dry airmass will allow produce good radiational cooling conditions.
(Today) An upper level low moving across the New England region, as it departs the coast, will induce upper level ridging across the southern CONUS.
Broad ridging will grow over the western United States through the week, which will allow for warming temperatures, calmer winds, and dry conditions. The upper-level low over the region will continue to shift eastward through the day today as the trough axis pushes through the forecast area. 5 inches of additional snowfall in the higher terrain of the southern Great Basin. Wind-wise, as the trough axis pushes through the forecast area today, expect gusty west-southwest winds ahead of the front, with gust speeds between 15 and 25 mph across the central and eastern Mojave Desert and between 25 and 35 mph across the western Mojave Desert.
953 AM EDT Sun Apr 27 2025 Dry and slightly cooler high pressure moves in today and Monday.
605 AM EDT Sun Apr 27 2025 Canadian high pressure will build into the region through Monday.
A broad low pressure system will makes its way across the area today into tomorrow, bringing much cooler temperatures as well as valley rain and accumulating mountain snow.
- A cold front will bring widespread gusty north winds up to 35 mph beginning this evening. WEATHER PATTERN OVERVIEW: The track of the low pressure system is from Nevada through Utah through Wyoming and through the Dakotas. Locally today, enough moisture and instability will be present to interact with the cold front to produce some thunderstorms across portions of NE Montana. A Lake Wind Advisory has been issued for Fort Peck Lake to account for the expected gusty north winds up to 35 mph associated with the cold front.
(The rest of today) Isolated to scattered showers and thunderstorms continue to develop and scoot across northeast OK and far northwest AR this morning as warm front lifts northward through the area.
With longwave troughing established over the western Conus, a pronounced negative PV anomaly was lifting into the Great Basin while additional subtle vorticity centers rotate into the trough base creating a more elongated, positive tilt structure.
130 PM EDT Sun Apr 27 2025 Canadian high pressure will build into the region through Monday.
306 PM EDT Sun Apr 27 2025 Low pressure slowly exits the Gulf of Maine with precipitation ending tonight.
GOES-19 visible imagery shows mostly clear to partly cloudy skies along the island chain as a few strips of fair weather cumulus streamers bubble off of the Lower and Middle Keys. Meanwhile, gentle to occasionally moderate easterly breezes prevail along the Reef leaving temperatures on the island chain ranging from the lower to mid 80s with a spot or two reading in the upper 80s due to being further inland away from the east shoreline. Easterly breezes will gradually freshen tonight through tomorrow becoming fresh by tomorrow night as the high conglomerate strengthens. That will change tomorrow night however, as moisture is advected along the eastern periphery of the ridge towards our CWA.
Satellite and radar observations early this afternoon highlight showers and thunderstorms developing over the higher terrain, while a closed low pressure system is seen spinning along the ID/UT/NV border. Shower and storm coverage will expand into this evening as the low gradually moves northeastward, with brief heavy rain and outflow winds being the primary storm threats. 25" in the higher terrain, with the higher amounts focused in Lemhi County. Remote locations above 6,500 feet in Lemhi County will see the highest snow amounts with 6-12 inches.
A deep trough over the southwestern U. S will begin to emerge over the western Plains tonight and spawn an area of low pressure over the central Plains tonight. Activity will build north with time as the nose of the low level jet continues to lift north into northern Minnesota. The warm front will lift north Monday morning and there should be a break in convection until about midday. A second line of storms could fire along the cold front west of the first line an hour or two later.
247 PM EDT Sun Apr 27 2025 High pressure moves overhead with sunny skies and warm temperatures on Monday.
(This evening through Monday night) An upper level ridge expanding from Mexico to Canada is moving eastward into the Mississippi River Valley. Increased heights form that high pressure system moving is the main mechanism expected to limit convective coverage quite a bit as well as keep temps several degrees above normal in the coming days.
With dry conditions forecast the remainder of the day, temps will likely be able to rise a few more degrees before hitting their peak in the high 70s and low 80s. Temps will cool back to the low 60s tonight.
151 PM EDT Sun Apr 27 2025 Dry and slightly cooler high pressure continues through Monday.
The main Pacific upper low off the California coast yesterday has moved inland to central Nevada this morning. As seen on radar, showers this morning were on the northern and western flanks of the low as far north as the Magic Valley, and moving westward in Idaho and southwestward in Oregon. Later today a NE-SW cold front will develop in western Idaho and shift gradually eastward. In the Lower Treasure Valley, the period should be 2 PM to 7 PM MDT.
155 PM EDT Sun Apr 27 2025 Canadian high pressure will build into the region through Monday.
- A cold front will bring widespread gusty north winds up to 35 mph beginning this evening. WEATHER PATTERN OVERVIEW: A cut-off low pressure system over NV/UT will bring areas of showers and some thunderstorms to the area tonight as the low lifts into the Dakotas Monday. A cold front will bring increasing North winds through the CWA this evening. It'll be cooler with highs in the 50s (a couple degrees below normal).
1139 AM CDT Sun Apr 27 2025 (Rest of Today and Tonight) Despite the cold front passing through the area earlier this morning, post frontal clouds continue to plague north Alabama and southern middle TN. Even with the clouds, rain chances will remain very low as post frontal dry air filters into the low and mid levels of the atmosphere indicated by the 12Z sounding from Nashville. High pressure induced SE flow will continue through the night and keep lows slightly elevated bottoming out in the low 60s.
Temperatures will be much cooler than climatological average today and Monday, but will overall be trending warmer this week. Otherwise, warmer than average temperatures continue until the end of the week. Latest satellite imagery shows our region underneath the back side of an upper-level low pressure system that has moved east of our region into the Great Basin. Otherwise, low and mid-level clouds will persist today with cooler than average temperatures.
259 PM EDT Sun Apr 27 2025 High pressure will pass across the Mid-Atlantic tonight, before sliding off the coast on late Monday.
So far, observed dewpoints are running a little higher than forecast, but they may drop off with greater BL mixing this afternoon and continued dry advection with high pressure building in from the north. Beside the low-clouds, areas of high/mid-level clouds will move across the region producing partly sunny sky. The building surface ridging will bringing drier dewpoints into the area especially areas along and north of interstate 40. For Tonight, surface ridging and dry airmass will allow produce good radiational cooling conditions.
234 PM EDT Sun Apr 27 2025 High pressure will keep dry conditions across the region through Monday.
148 PM EDT Sun Apr 27 2025 High pressure will keep dry conditions across the region through Monday.
High pressure over OH today will shift east and be located near the Mid-Atlantic coastal region tomorrow, which will result in a southerly low level flow across the Southern Appalachians and TN Valley. The southerly flow will bring warmer temperatures in the upper 70s to lower 80s for most locations outside the mountains.
19Z surface analysis shows low pressure along the lee of the ROckies from eastern Wyoming into New Mexico. Mid level low/ trough was located over Nevada into southern California and was progressing slowly eastward this afternoon. The energy from the southwest mid level trough will eject from New Mexico into Nebraska while phasing with a northern stream trough across the Dakotas. Forecast soundings show some curvature in the hodographs with veering winds in the low levels, allowing for storms to ingest streamwise vorticity.
(Rest of Today and Tonight) Despite the cold front passing through the area earlier this morning, post frontal clouds continue to plague north Alabama and southern middle TN. Even with the clouds, rain chances will remain very low as post frontal dry air filters into the low and mid levels of the atmosphere indicated by the 12Z sounding from Nashville. High pressure induced SE flow will continue through the night and keep lows slightly elevated bottoming out in the low 60s.
Despite a continued se/s llvl flow, prevalent mid/upper ridging in place will keep chances of precip minimal at best.
154 PM EDT Sun Apr 27 2025 High pressure in control through early parts of the work week. Generally in the lower 40s to upper 30s across the lowlands, ranging into the mid 30s northeast mountains. Some locations may see cooler temperatures with efficient radiational cooling overnight, mainly in the common lower spots. Warmer temperatures are anticipated for Monday under plenty of sunshine and developing southerly flow. Highs could reach the lower 80s across the lowlands, ranging into the lower 60s northeast mountains. Temperatures will rebound to above normal as area remains in the warm sector of an approaching low pressure system, that will move east across Canada, and its associated surface cold front.
149 PM EDT Sun Apr 27 2025 Dry and slightly cooler high pressure continues through Monday.
1211 PM CDT Sun Apr 27 2025 (Today through Monday) Deep South Texas will remain under the influence of high pressure at the surface and aloft. High temperatures today and Monday 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.
100 PM CDT Sun Apr 27 2025 - Strong south winds and much warmer Sunday.
1210 PM CDT Sun Apr 27 2025 - Warmer and more humid Monday.
1125 AM EDT Sun Apr 27 2025 Drier and somewhat cooler air will spread over the area today following the passage of a cold front. A drier air mass continues to settle over the area with high pressure building in today as PWATs have fallen below and inch and dewpoints in the 40s to lower 50s. Temperatures should be cooler than last night,especially across the northern Midlands with near calm winds and moderate radiational cooling through a drier atmosphere and expect lows to range from the lower 50s north to mid 50s south and would not be surprised to see some sheltered locations dip into the 40s.
947 PM EDT Sun Apr 27 2025 High pressure moves overhead with sunny skies and warm temperatures on Monday.
Temperatures will be much cooler than climatological average today and Monday, but will overall be trending warmer this week. Otherwise, warmer than average temperatures continue until the end of the week. Latest satellite imagery shows our region underneath the back side of an upper-level low pressure system that has moved east of our region into the Great Basin. Otherwise, low and mid- level clouds will persist today with cooler than average temperatures.
1029 PM EDT Sun Apr 27 2025 High pressure will cross the Appalachian Mountains tonight to provide dry weather through Monday.
904 PM EDT Sun Apr 27 2025 High pressure will keep dry conditions across the region through Monday.
1015 PM EDT Sun Apr 27 2025 Canadian high pressure will build into the region through Monday.
854 PM EDT Sun Apr 27 2025 Dry and slightly cooler high pressure continues through Monday.
Conditions early this evening are mainly VFR, though with partial obscuration of the higher terrain. The strongest northerly winds and steepest seas will be found south of Cape Blanco as a weak thermal trough persists into Monday night. A strong thermal trough is not forecast, so periods of below advisory seas will be possible.
We've seen showers and thunderstorms produce light to moderate rain this evening with the highest amounts reported in the Boise Mountains where 0.
730 PM EDT Sun Apr 27 2025 High pressure will cross the Appalachian Mountains tonight to provide dry weather through Monday.
438 PM CDT Sun Apr 27 2025 - Strong south winds and much warmer Sunday.
730 PM EDT Sun Apr 27 2025 Drier and somewhat cooler air will remain over the area into Monday.
- Seasonal temperatures this upcoming work week with a chance of afternoon showers or thunderstorms most days, especially in the high country.
740 PM EDT Sun Apr 27 2025 Canadian high pressure will build into the region through Monday.