Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure will dominate the Southwest through the forecast period. Isolated to scattered showers/storms possible each day, primarily across the higher terrain. A large area of high pressure remains centered over New Mexico today, resulting in additional record breaking daytime highs and mostly dry conditions. The ridge will gradually shift westward while the area of low pressure moves eastward to our north. The movement of this trough will finally allow winds to decrease across far northern Arizona, but with minimum RH values mostly between 8-20%, near- critical fire weather conditions will stick around. the area of high pressure that was previously mentioned looks to build across the West Coast. This isn't a very favorable pattern for moisture to creep into our CWA, but by mid-week this high could shift back towards Arizona and allow for moisture to increase from the Gulf of California.
324 AM EDT Fri Aug 8 2025 - A return to uncomfortable temperatures and humidity levels in store this weekend with highs in the upper 80s to near 90 and heat indices in the low to mid 90s. Ridge axis building in from the south to southwest will supply enough capping aloft to keep showers/storms at bay through most of the weekend. Temperatures and moisture will continue to be on an increase with the first influx of higher dew points coming into the area later today with dew points getting into the lower 70s along with high temperatures into the upper 80s across the CWA. On Saturday, dew points increase slightly into the mid 70s with highs also slightly higher into the lower 90s for many locations.
159 AM EDT Fri Aug 8 2025 High pressure will remain centered to the east of the area through the weekend.
- Cooler Friday and Saturday with temperatures in the 70s to low 80s F. Continued cold air advection overnight will lead to high temperatures 10-15 degrees cooler for Friday. The upper level low will bring descent and a tight pressure gradient leading to westerly 700 mb winds of 40-50 kts.
Updated at 1129 PM CDT Thu Aug 7 2025 - A warming trend continues Friday with afternoon highs in the low to mid 90s through the weekend.
- Cooler temperatures are expected today and through the weekend with highs mostly in the 70s to low 80s. Cooler temperatures are on tap through this weekend with highs in the mid 70s to low 80s.
pdf High pressure ridge will remain in place to the north of the region across the Carolinas, while a weakening frontal boundary will remain in place across NE FL. Low temps will generally be in the lower 70s inland and mid/upper 70s along the Atlantic Coast tonight.
(Through Friday) Today is expected to be the hottest day in this multi-day stretch of dangerous heat as the upper ridge reaches peak intensity across the southwestern US into the southern Plains.
The upstream upper air pattern continues to feature a prominent ridge across the southwestern tier of the CONUS. This, combined with an impinging low-level thermal ridge, will promote another dangerously hot afternoon and early evening. While slightly "cooler" to the east, a persistent axis of deeper moisture content will foster heat indices in the 105 to 110-degree range. Otherwise, hot conditions will return by the afternoon on Friday, as influence from the aforementioned western ridge, and expanding low-level thermal axis, continue. A modest pattern change is currently anticipated during the weekend, as a strong upper trough lifts across the Central and Northern Plains.
This activity is result of a very weak upper wave diving south around the ERN periphery of the upper ridge to the west. The upper ridge centered to the west of AR late this week will gradually weaken and shift further west over the weekend. with chances for convection increasing slightly as weak low pressure to the SE moves closer to AR. AR and the Mid-South will be under a weak upper trough.
100 AM EDT Fri Aug 8 2025 High pressure will bring warm days and comfortably cool nights through Saturday.
Cloud, and Cambridge. As the cold front approaches, the cap should erode but likely remain in some capacity with the cooling boundary layer. By late week, broad ridging will build across the Rockies and eastward which could bring an uptick in the heat and humidity again. Given the high dew points, added in a TEMPO for MVFR cigs/vis at KRWF and may need to add to KMKT later. Late in the period, thunderstorms are possible along a cold front, but have only introduced this as a PROB30 mention at KAXN and KMSP.
High pressure over the Mid-Atlantic will gradually shift northeastward during the day with a mid level ridge across much of the Southeast.
A 500mb ridge will build northeastward over the coming days engulfing the eastern U. Meanwhile, an upper low over the Northern Rockies will slowly slide east into the Northern Plains and Southern Canada this weekend. This will set up a trough axis over the Central Plains early in the week that will slowly pivot east.
This boundary sits between high pressure over the mid-Atlantic states and high pressure in the western gulf. A little farther to the northeast, models continue to develop a weak area of low pressure off the Carolina coastline. This area of low pressure has only a 20 percent chance of tropical development over the next 7 days as it slowly lifts to the north-northeast.
1038 PM MDT Thu Aug 7 2025 - Breezy Today With Isolated Storms North and East - Critical Fire Weather Conditions Today Due to Wind & Humidity - Much Cooler Temperatures Tomorrow As an area of low pressure moves eastward through eastern Washington state, northern Idaho, and Montana an associated cold front will swing through Eastern Idaho later this evening/tonight. While this cold front won't bring much precipitation, it will at least bring some relief from the heat. Highs today will be in the mid to upper 80s in our valley locations and we will be about 5 to 10 degrees cooler on Friday, meaning highs for many in the mid to upper 70s and a few low 80s.
For today, the upper level pattern will consist of a weak trough over the northeastern US. Mostly dry conditions are expected to persist as high pressure takes hold of the middle Ohio Valley and central Appalachians this weekend. Temperatures will continue to trend hotter through the weekend, with highs potentially breaking into the 90s for portions of the lowlands.
High Pressure Ridge finally taking shape over the West as Central California seeâs a return of Triple digits today. While a disturbance moving through the Pacific Northwest and Extreme Northern California, the ridge over the Southwest will now dictate temperature conditions over the area.
Continued hot, humid, and quiet weather is expected again today as an upper level ridge of high pressure centered over New Mexico continues to dominate our weather. The ridge is forecast to weaken through the day with heights actually falling aloft over North and Central Texas, which normally would suggest a cooler day versus yesterday. As mentioned above, models show the H5 ridge over New Mexico continuing to weaken tomorrow, with a weak inverted trough of low pressure sliding westward into the Texas Gulf Coast.
1227 AM CDT Fri Aug 8 2025 (This evening through Friday) Not much on radar this afternoon as high pressure is building and the wedge is retreating. On Friday the mid-level ridge axis will continue to build eastward towards the Lower Ohio Valley, while southern portions of the Southeast trough begin to form a weak/broad upper low over the northern Gulf. With another surge of dry easterly flow at the lowest levels, PoPs are on the lower side again, with high temperatures.
A strong mid-level anticyclone remains centered over New Mexico with a ridge axis extending northeastward to the Mid-Mississippi Valley. Mid-level ridging builds across the eastern CONUS on Saturday, while some tropical (PWATs > 2 in) moisture begins to move into Central Alabama from the southeast.
The stout dome of high pressure over New Mexico will maintain its stronghold over our region for at least one more day, resulting in forecast high temperatures of 100-107. On Saturday, models show a weak cold front advancing out of Kansas, eventually reaching our neck of the Plains and providing a slight cool down for much of the area. This will be due in part to the decaying ridge to our west, allowing for slightly improved moisture return and another weak disturbance to advance over the region.
304 AM EDT Fri Aug 8 2025 High pressure will bring warm days and comfortably cool nights through Saturday.
Additionally, the wedge of cooler and more stable air, denoted by upper 60s and lower 70s dewpoints across southwest Georgia could also make it a little more difficult for storms to develop. (Today and tonight) For today, weak upper level troughing and low-level northeasterly flow will continue. This moisture gradient will result in the highest rain chances across the southeast Florida Big Bend today with lower chances further northwest. High temperatures will generally range from the mid 80s to near 90 with overnight lows in the low to mid 70s.
635 AM CDT Fri Aug 8 2025 (Today through Saturday) Typical summer-like conditions continue today as the subtropical ridge is centered over New Mexico with its influence extending over South Central Texas. The ridge shifts slightly more west by Saturday afternoon leaving some low precipitation chances for our far eastern counties due to the seabreeze.
There was concern that heat Advisories could be needed again on Saturday, but potential for morning thunderstorms and debris clouds have resulted in slightly cooler temperature forecasts. Even so, heat indices could reach the lower to middle 90s in eastern WI Saturday afternoon. Our local Meso-analysis page showed very warm 700 mb temperatures (+11 to +13 C) moving into western WI and a building upper ridge early this morning. SPC HREF 40 dBZ paintballs show a linear MCS arriving in NC/C WI late tonight (after 09z/Sat), as the upper ridge shifts east and the caps begins to weaken.
Cloud, and Cambridge. As the cold front approaches, the cap should erode but likely remain in some capacity with the cooling boundary layer. By late week, broad ridging will build across the Rockies and eastward which could bring an uptick in the heat and humidity again.
Today: Upper high center over central NM will weaken and with lower low-level thickness values, highs will not be as HOT but there will still be a few local near record highs. Saturday: The upper high centered over NM will continue to weaken and with lowering low-level thickness values, highs will be several degrees cooler than today.
A cold front will push through this afternoon to bring us some relief from those upper 90's to low 100 degree temperatures. Activity will creep up again into the weekend as an upper level low passes over the northern Rockies and northern Plains. Expect cooler temperatures on Saturday with highs generally in the upper 70s to mid 80s underneath the slow moving trough aloft. A dry slot of the upper level low is expected to creep into much of the northern part of the forecast area, and mix down very low dewpoints in the afternoon hours.
553 AM EDT Fri Aug 8 2025 - A return to uncomfortable temperatures and humidity levels in store this weekend with highs in the upper 80s to near 90 and heat indices in the low to mid 90s. Ridge axis building in from the south to southwest will supply enough capping aloft to keep showers/storms at bay through most of the weekend. Temperatures and moisture will continue to be on an increase with the first influx of higher dew points coming into the area later today with dew points getting into the lower 70s along with high temperatures into the upper 80s across the CWA. On Saturday, dew points increase slightly into the mid 70s with highs also slightly higher into the lower 90s for many locations.
620 AM CDT Fri Aug 8 2025 Updated at 620 AM CDT Fri Aug 8 2025 - A warming trend continues Friday with afternoon highs in the low to mid 90s through the weekend.
655 AM EDT Fri Aug 8 2025 (Today and tonight) For today, weak upper level troughing and low-level northeasterly flow will continue. This moisture gradient will result in the highest rain chances across the southeast Florida Big Bend today with lower chances further northwest. High temperatures will generally range from the mid 80s to near 90 with overnight lows in the low to mid 70s.
625 AM EDT Fri Aug 8 2025 High pressure will remain centered to the east of the area through the weekend.
Overall thinking at least scattering of showers and t-storms will be possible just about anytime today as we are still in advance of the 500 mb trough.
Otherwise, the cold front, which is currently positioned along just east of the Missouri River, will continue to track eastward as the lee low over central SD shifts northeastward into ND through the afternoon. Warm temps aloft should keep a lid on any surface based convection forming out ahead of the cold front until it starts to erode later on this evening, allowing for the potential of showers and thunderstorms over the James River Valley and eastward into MN.
An inverted upper trough forming over the western Gulf and lower Mississippi River will gradually shift westward and evolve into a closed low pressure area through the weekend as an upper high pressure ridge builds into our region from the east.
1236 PM EDT Fri Aug 8 2025 A broad area of high pressure dominates the region, leading to quiet conditions as we head into the weekend. Much of the Midwest continues to be dominated by broad ridging and high pressure.
Satellite imagery hints a a couple of weak trough axes between central Kentucky and northern Alabama/Georgia moving slowly south or southeastward today. Expect some scattered showers and thunderstorms to develop later this afternoon as these trough axes push south into an unstable airmass.
913 AM PDT Fri Aug 8 2025 Hot conditions expected today with widespread moderate HeatRisk across the valleys, mountains, and High Desert with widespread major HeatRisk in the low desert. High temperatures are expected to be a few degrees cooler today compared to yesterday, but widespread moderate HeatRisk across the valleys, mountains, and High Desert with widespread major HeatRisk in the low desert will prevail. Ensemble guidance is indicating an increase in precipitable water for the lower deserts on Saturday, which could decrease their high temperature readings even further.
Our area is currently influenced by a ridge of high pressure aloft extending out of the Desert Southwest, and that will continue into Saturday. Water vapor imagery shows a well formed upper low spinning over northeast Montana and southern Saskatchewan this afternoon. Global models show an elongating trough south of it through the weekend, helping to sharpen the ridge as shifts more toward the eastern Great Lakes. A corridor of heavy rain is likely to set up in this region Saturday night, as an incoming cold front runs into the ridge and stalls out.
(Rest of today through Saturday) A slow-moving low pressure trough extending from Central Florida into the eastern Gulf will continue to be the primary focus for showers and thunderstorms across South Florida this afternoon through the weekend. Highs this afternoon will still reach the lower 90s over the interior in the next 1-2 hours before the arrival of the rain, with highs on Saturday a couple of degrees lower due to the increased and prolonged period of cloud cover and precipitation.
Due to the high PWAT values mentioned in the discussion above, residual boundaries from earlier convection, and the MCV, we decided to raise the PoPs for today to 80% which is an increase from the previous 70%.
- Cooler temperatures are expected today and through the weekend with highs mostly in the 70s to low 80s. Currently, surfaced low pressure extends from southern Saskatchewan east into Manitoba and the south through Minnesota. A closed upper low is spinning over southwest Saskatchewan, with another smaller, closed circulation lifting northeast through northeast Montana.
The ridge builds in a little more on Saturday, but edges northward. The main clouds and precipitation will be primarily across the southern portions of the area with the highest rain chances along and south of I-85. Did adjust the highs in the north upwards a few degrees above guidance with more sun. A strong mid-level anticyclone remains centered over New Mexico with a ridge axis extending northeastward to the Mid-Mississippi Valley. Mid-level ridging builds across the eastern CONUS on Saturday, while some tropical (PWATs > 2 in) moisture begins to move into Central Alabama from the southeast.
218 PM MDT Fri Aug 8 2025 - Cooler temperatures today.
Pre-frontal trough has pushed across the western portions of the CWA which will limit severe potential in much of that area with expected main storm development along and ahead of the pre- frontal trough area/cold front into the late afternoon/evening timeframe. Overall thinking at least scattering of showers and t-storms will be possible just about anytime today as we are still in advance of the 500 mb trough.
123 PM EDT Fri Aug 8 2025 - A return to uncomfortable temperatures and humidity levels in store this weekend with highs in the upper 80s to near 90 and heat indices in the low to mid 90s. Ridge axis building in from the south to southwest will supply enough capping aloft to keep showers/storms at bay through most of the weekend. Temperatures and moisture will continue to be on an increase with the first influx of higher dew points coming into the area later today with dew points getting into the lower 70s along with high temperatures into the upper 80s across the CWA. On Saturday, dew points increase slightly into the mid 70s with highs also slightly higher into the lower 90s for many locations.
337 PM EDT Fri Aug 8 2025 A front will linger south of the area this weekend, while high pressure remains centered well to the north. Weak mid level low and associated trough axis will shift off the East Coast through tonight. The surface will feature high pressure ridging south into the region and subtle coastal troughing offshore. A surface wedge of high pressure extending along the ridge of the Appalachians, will support a relatively unusual August cold air damming (CAD) setup. As a result, temperatures will remain below normal through the weekend, with highs in the low to mid 80s under persistent cloud cover. Overnight lows will generally hold in the low to mid 70s.
Temperatures will be cooler than what we'd normally expect for early August with temperatures in the mid to low 80s today and tomorrow. Rain chances will be limited to northern Georgia, as NE flow will force what little moisture in the atmosphere to interact with some of the higher points in NE Georgia.
1241 PM EDT Fri Aug 8 2025 * A ridge of high pressure extending from Central PA to the Atlantic waters just south of Nova Scotia will result in a number of dry, warm days and mainly clear relatively comfortable nights through this weekend.
High pressure now becoming the dominate feature over the West as shown in Thursdayâs max temperatures. Ensemble upper-air analysis has the high showing signs of further amplification today and Saturday as Central California continues its warming trend.
(This evening through Saturday night) We continue to be subjected to the influence of upper level high pressure to our west and east with a subtle trough (really only 3 to 4 mb lower) and a weak, nearly stalled surface front drifting north and south over the CWA and just offshore. Afternoon high temps should stay in the low 90s with feels-like just over 100.
A cold front has pushed through all of western SD late this morning and in its wake a cooler and drier airmass has advected into the region. Water vapor and VIS shows a broad closed low spinning across northeastern Montana with a clear defined dry slot wrapping up near the center. As the main area of low pressure/trough approaches the area some residual CAPE values around 1000 J/kg are hanging around the plains and points east. Heading into the weekend, the pattern begins to shift toward a prolonged period of dry weather with temperatures warming to seasonal as the winds aloft switch from the Northwest to the southwest as upper level ridging begins to build across much of the western CONUS.
As we head into the weekend, the aforementioned high sightly shifts westward, opening the door for more troughiness across our area.
Satellite imagery hints at a couple of weak trough axes between central Kentucky and northern Alabama/Georgia moving slowly south or southeastward the remainder of the afternoon. Expect additional scattered showers and thunderstorms to develop later this afternoon as these trough axes push south into an unstable airmass.
This morning was the coolest since late June (Burns/OR 34 degs, Boise 51, McCall 37), but warming is forecast the next several days as yesterday's cool upper trough exits east.
123 PM MDT Fri Aug 8 2025 - Scattered showers, cooler (68 to 78), and breezy today. - Isolated showers, a bit warmer (70s to lower 80s), and continued breezy conditions Saturday.
Updated at 1241 PM CDT Fri Aug 8 2025 - A warming trend will continue through the weekend with afternoon highs in the low to mid 90s.
205 PM EDT Fri Aug 8 2025 A front will linger south of the area this weekend, while high pressure remains centered well to the north. Weak mid level low and associated trough axis will shift off the East Coast through tonight. The surface will feature high pressure ridging south into the region and subtle coastal troughing offshore. A surface wedge of high pressure extending along the ridge of the Appalachians, will support a relatively unusual August cold air damming (CAD) setup. As a result, temperatures will remain below normal through the weekend, with highs in the low to mid 80s under persistent cloud cover. Overnight lows will generally hold in the low to mid 70s.
A mid and upper level high pressure system remains dominate across S TX, keeping rain chances low (10-20) tonight through Saturday, as well as hot with afternoon heat indices generally ranging from 100- 109.
137 PM EDT Fri Aug 8 2025 * A ridge of high pressure extending from Central PA to the Atlantic waters just south of Nova Scotia will result in a number of dry, warm days and mainly clear relatively comfortable nights through this weekend.
1257 PM EDT Fri Aug 8 2025 High pressure will bring warm days and comfortably cool nights through Saturday.
220 PM EDT Fri Aug 8 2025 High pressure will remain anchored over the northeast states through the weekend bringing mainly dry weather and a gradual warming trend.
Main upper low the wrapping into ND/south central Canada with some additional clouds moving into the state, cooler conditions and a few isolated showers developing across the north late Saturday. Winds have already shifted to the west and northwest behind general troughing and will in the western TAF sites and will become westerly through the period in the east.
At the upper levels, a trough lingers over the northeastern US, with little influence over the local area. Mild temperatures expected tonight generally in the mid 60s across the lowlands, ranging into the low 50s northeast mountains. Highs for Saturday will range from the lower 90s across the lowlands, ranging into the lower 70s northeast mountains. Mostly dry conditions with a warming trend can be expected as the high pressure system continue its influence over the Middle Ohio valley and West Virginia through the weekend. Isolated afternoon convection will be possible mainly along the higher terrain, but it will be dry for the most part of the weekend. Temperatures will continue to trend hotter through the weekend, with highs potentially breaking into the 90s for portions of the lowlands.
209 PM EDT Fri Aug 8 2025 High pressure will bring warm days and comfortably cool nights through Saturday night.
Winds across the Keys are expected to remain southeasterly while a high pressure system builds off the US northeast coastline.
706 PM EDT Fri Aug 8 2025 A broad area of high pressure dominates the region, leading to quiet conditions as we head into the weekend. Much of the Midwest continues to be dominated by broad ridging and high pressure.