Aikyam-Lab/Synoptic-Bench huggingface dataset:
1236 AM CDT Thu Apr 17 2025 (Tonight through Thursday night) For the short term period, ridging will remain in place overhead through much of the period and begin to slowly slide eastward Thursday evening. At the same time a mid/upper level trough will dig into the Great Basin allowing low pressure to develop at the surface across the High Plains. While the high pressure in place will maintain warm and dry conditons over us, the increased surface pressure gradient will lead to breezy conditions tonight into Thursday.
An upper trough (insider slider) will drop south into the area this evening and tonight. The upper trough will move east of the area Thursday ushering in a cooler and drier air mass, with moderate to occasionally strong winds east of the Cascades Thursday afternoon into Thursday evening. Friday will be dry with afternoon temperatures warming up some, and will be above seasonal norms as the upper trough from Thursday digs south and bringing a dry east to northeast flow over the area. We can expect gusty afternoon and early evening breezes east of the Cascades and the higher terrain west of the Cascades. However, winds are not expected to be as strong as upper ridging builds in and winds aloft become weaker.
------------------------------------------------------------------- Clear skies and light wind has allowed for efficient radiational cooling overnight, with recent observations showing the vast majority of the forecast area at or below freezing. Ridging will maintain dry conditions today.
338 AM EDT Thu Apr 17 2025 A warm front will lift north across the Ohio Valley later today and tonight, leading to a chance for a few light rain showers. It will also usher in a warmer airmass with warm and breezy conditions expected on Friday.
A pattern change is expected by Friday as an upper level trough dives down from the Rockies. This will bring a cold front into the state, likely stalling over NW Arkansas.
As low pressure deepens over the High Plains ahead of the approaching trough, scattered thunderstorms have developed this morning in an area of strong 700 mb WAA. The rest of today will be dry and warm, with the area resting under the 850 mb thermal ridge axis. Overnight and into Friday morning, a cold front will press southeast across the area, turning winds to the northwest.
1217 AM CDT Thu Apr 17 2025 - Warmer temperatures Thursday and Friday, with highs reaching into the upper 80s to low 90s.
353 AM CDT Thu Apr 17 2025 An upper ridge extending from the western Gulf to Ontario Canada will shift over the eastern CONUS through Friday morning.
(Today through Friday) Warming trend begins in earnest across central Alabama today, as upper level heights increase with the building 500mb ridge.
- Above normal temperatures return for the remainder of the work week; much cooler temperatures this weekend with cold front and rain. Otherwise, a warm and windy day is anticipated across eastern Oklahoma and western Arkansas in advance of a cold front that is set to move into the area on Friday.
1232 AM CDT Thu Apr 17 2025 Deep layer ridging will build over the forecast area tonight through Thursday night. Highs on Thursday will be quite warm, primarily in the lower 80s for most locations except for mid to upper 70s closer to and along the coast.
The longwave trough will move further offshore of the Northeast Coast tonight while the high-amplitude longwave ridging builds closer to the area, extending from over Northeast Mexico northward to over the Midwest and Mid-Mississippi River Valley Regions. Low temperatures will range from the lower 40s northeast to the mid 40s south and west. High amplitude longwave ridging will continue to build closer from the west, extending from over the Northwest Gulf northward to over much of the Great Lakes. The warming trend will continue across the area with highs ranging from the mid 70s in the higher elevations east to readings in the lower 80s across the southwest third of the forecast area.
- Rain transitions to snow across portions of northwest Nebraska Thursday night, with a threat for light (~1-2") accumulations near the Pine Ridge. This cold front will continue to push south tomorrow afternoon, with much of the area post-frontal by Noon. The greatest threat for accumulating snow will occur along the Pine Ridge, where ~1-2" of slushy accumulations are possible. By Friday night, an upper low will begin to eject northeast out of the Four Corners into the southern Plains. It appears this low will track far enough to the south and east that it will largely keep us devoid of precipitation, keeping any moisture confined to far eastern Nebraska. A cold front will make it's way southward though the area with winds becoming north and increasingly gusty through the afternoon into this evening.
340 AM EDT Thu Apr 17 2025 High pressure will bring fair dry weather through tonight. A few showers will be possible Friday as a warm front works through the Lower Lakes. Skies quickly clearing as high pressure builds into the Lower Lakes. Increasing clouds Friday with a chance of a showers as a warm front crosses the Lower Lakes. much warmer with highs in the 60s east of Lake Ontario, to low to mid 70s elsewhere.
Cooler temperatures again today. Sarment (This evening through Thursday) Cooler and cloudy conditions exist over San Francisco area and for portions of the North Bay. The longwave pattern shows the cut-off upper level low that has been spinning off the coast will move inland near LA as it transitions to an open wave. As this happens, another wound up upper low sweeps through the Great Basin.
With the area remaining under the influence of increasing upper ridging, quiet conditions will continue through the near term, and no forecast updates are required at this time. Tonight, temperatures will be about 10 degrees warmer than last night, falling into the 50s F as winds turn southerly around the western flank of the high pressure center responsible for the fair weather. ) We could knock on the door of 90 some spots Friday with the peak of an 850mb thermal ridge.
443 AM EDT Thu Apr 17 2025 (Today through Friday) -Warm and dry conditions continue through Friday -High fire danger conditions for portions of east-central Georgia this afternoon due to low RH and dry vegetation Another warm and dry day can be expected across North and Central GA today with even warmer temperatures forecast for Friday. Upper ridging slides overhead with high pressure nudging off the East Coast today. Though 60s to low 70s are forecast for northeast GA and the higher elevations. Even warmer temperatures are forecast for Friday the ridge parks and builds over the southeast.
949 AM EDT Thu Apr 17 2025 High pressure will shift offshore later today with temperatures below normal followed by significant warming for the weekend.
High pressure will allow dry conditions and above normal temperatures to persist through the end of the work week as our stretch of pleasant weather continues. This allows for warmer temperatures this afternoon and Friday afternoon, with dry conditions during this time. At the coast, temperatures closer to the low/mid 60s. Friday will be warmer, with a 70-80% chance of temperatures exceeding 70 in the Willamette Valley and SW Washington lowlands.
(Today through Friday) -Warm and dry conditions continue through Friday -High fire danger conditions for portions of east-central Georgia this afternoon due to low RH and dry vegetation Another warm and dry day can be expected across North and Central GA today with even warmer temperatures forecast for Friday. Upper ridging slides overhead with high pressure nudging off the East Coast today. Though 60s to low 70s are forecast for northeast GA and the higher elevations. Even warmer temperatures are forecast for Friday the ridge parks and builds over the southeast.
427 AM CDT Thu Apr 17 2025 Today and Tonight: Continued dry and warmer through the period. Early morning satellite imagery/RAP analysis showed a mid level ridge just west of our CWA that is progged to strengthen and shift east over our CWA. This ridging surface and aloft combined with the gusty southerly wind should help temperatures top out warmer than normal and in the 80s. This will help temperatures bottom out warmer than normal as well and from the upper 50s east to the mid 60s west. /22/ Friday through Next Thursday The period will begin with a upper-level ridging across the southeastern states.
High pressure will continue to dominate with fair dry weather and above normal high temperatures. This will keep coastal locations several degrees cooler than inland areas with highs this afternoon ranging from the mid to upper 70s along the coast to upper 80s to around 90 inland. High pressure surface and aloft will build over west central and southwest Florida today and will hold over the region through the weekend. As the U/L ridge builds over the area, temperatures will climb a few degrees today and again on Friday.
621 AM EDT Thu Apr 17 2025 High pressure will shift offshore later today with temperatures below normal followed by significant warming for the weekend.
An upper trough will dive into the Great Basin region today, then proceeding into the Four Corners region through the weekend. A NE Pacific ridge will nose in as the trough passes.
1009 AM EDT Thu Apr 17 2025 High pressure will bring fair dry weather through tonight. A few showers will be possible Friday as a warm front works through the Lower Lakes. High pressure will bring sun-filled skies today which will help to push temps into the upper 40s to the low/mid 50s. Increasing clouds Friday with a chance of a showers as a warm front crosses the Lower Great Lakes, however the vast majority of the day will be rain-free. much warmer with highs in the 60s east of Lake Ontario, to low to mid 70s elsewhere.
958 AM EDT Thu Apr 17 2025 High pressure will build into the area through today before moving offshore tonight.
640 AM CDT Thu Apr 17 2025 An upper ridge extending from the western Gulf to Ontario Canada will shift over the eastern CONUS through Friday morning.
An upper low is spinning just to the west of the channel islands with a a positively tilted ridge over the eastern Pacific. The low is brining some mid level moisture into Central California. Progressing into Friday the upper low is eaten up by a digging trough into the Great Basin leaving Central California in a northerly flow aloft.
Upper ridging will keep dry conditions over the region Friday, along with breezy southerly winds. Cloud cover will be on the increase ahead of an emerging upper trough that will impact our area over the Easter weekend.
546 AM CDT Thu Apr 17 2025 (Rest of tonight and Thursday) Tranquil weather across the Tennessee Valley for the remainder of the overnight hours, with high pressure in control of our sensible weather. With high pressure setting up east of the area on Thursday, southerly flow will increase across the Deep South.
------------------------------------------------------------------- Clear skies and light wind allowed for efficient radiational cooling overnight with recent observations showing a good portion of the forecast area at or below freezing this morning. Ridging will maintain dry conditions with increasing thickness and warm advection pushing temperatures up to near normal.
616 AM CDT Thu Apr 17 2025 (Today through Friday) Warming trend begins in earnest across central Alabama today, as upper level heights increase with the building 500mb ridge.
623 AM CDT Thu Apr 17 2025 - Warmer temperatures today and Friday, with highs reaching into the upper 80s to mid 90s.
507 AM MDT Thu Apr 17 2025 - Late season cold front racing southward, with widespread snow in its wake. The initial edge of the cold front continues to push southward across central WY this morning, with precipitation beginning to fill in across the north. As the north sfc winds increase later this morning, overrunning precip will begin to build across central Wyoming, and with temperatures steady in the low to mid 30s, precip will be nearly all snow through the day.
Key Messages: -Warmer than normal conditions persist the next two days.
623 AM CDT Thu Apr 17 2025 Today and Tonight: Continued dry and warmer through the period. Early morning satellite imagery/RAP analysis showed a mid level ridge just west of our CWA that is progged to strengthen and shift east over our CWA. This ridging surface and aloft combined with the gusty southerly wind should help temperatures top out warmer than normal and in the 80s. This will help temperatures bottom out warmer than normal as well and from the upper 50s east to the mid 60s west. /22/ Friday through Next Thursday The period will begin with a upper-level ridging across the southeastern states.
420 AM MDT Thu Apr 17 2025 - Low pressure system arrives today bringing much colder weather with light snow possible even down to valley floors. Low pressure system will sag south into eastern Idaho today. Ground temps being warm, not expecting much accumulation in the lower elevations. Elsewhere, the amounts from this storm just look too light for advisories, maybe near the pass level with Montana, perhaps around the higher peaks in the hills south of Burley, or even along the spine of the Idaho Wasatch.
Weak upper level ridging will build north of the Ohio River today and allow much warmer air to the reach the area. Also, the arrival of an Elevated Mixed Layer (EML) should help initially prevent showers with a sizable cap in the lower levels. Lingering dry air from departing high pressure will hamper late afternoon rain chances. Forecast soundings show a 30+ degree surface dew point depression while the low-level dry air extends to 700mb (nearly 9k FT).
------------------------------------------------------------------- Slowly departing high pressure will continue to foster dry weather and plenty of sunshine. A few high clouds may show up this afternoon, spilling over an approaching mid-level ridge axis.
648 AM EDT Thu Apr 17 2025 A warm front will lift north across the Ohio Valley later today and tonight, leading to a chance for a few light rain showers. It will also usher in a warmer airmass with warm and breezy conditions expected on Friday.
846 AM EDT Thu Apr 17 2025 A warm front will lift north across the Ohio Valley later today and tonight, leading to a chance for a few light rain showers. It will also usher in a warmer airmass with warm and breezy conditions expected on Friday.
639 AM EDT Thu Apr 17 2025 High pressure will bring fair dry weather through tonight. A few showers will be possible Friday as a warm front works through the Lower Lakes. Increasing clouds Friday with a chance of a showers as a warm front crosses the Lower Lakes. much warmer with highs in the 60s east of Lake Ontario, to low to mid 70s elsewhere.
302 AM MDT Thu Apr 17 2025 - Low pressure system arrives today bringing much colder weather with light snow possible even down to valley floors. Low pressure system will sag south into eastern Idaho today. Ground temps being warm, not expecting much accumulation in the lower elevations. Elsewhere, the amounts from this storm just look too light for advisories, maybe near the pass level with Montana, perhaps around the higher peaks in the hills south of Burley, or even along the spine of the Idaho Wasatch.
312 AM PDT Thu Apr 17 2025 Cooler, cloudier, and windier conditions expected through Friday.
An upper ridge will continue to bring drier, warmer weather for Western Washington through Friday.
High clouds increase late weekend ahead of a low pressure system.
Weak upper level ridging will build north of the Ohio River today and allow much warmer air to the reach the area. Also, the arrival of an Elevated Mixed Layer (EML) should help initially prevent showers with a sizable cap in the lower levels.
202 PM EDT Thu Apr 17 2025 High pressure will bring fair and dry weather through tonight. It'll be much warmer Friday as a warm front moves through the area, but this may produce a few showers.
The warming trend will continue as readings top out from the upper 70s in the higher terrain east to the lower 80s south and west. Amplified longwave ridging will extend from over the Northwest Gulf northward to over the Southern Ohio River Valley overnight while troughing over the Central Intermountain West becomes more pronounced. Mid-level amplified longwave ridging will become extended from over the Central Gulf Coast northeast to over the Mid-Atlantic Region while positive-tilted longwave troughing will extend from South-Central Canada southwest to over the Four Corners States. High temperatures will range from the lower 80s in the higher terrain east to readings in the upper 80s southwest.
- Off and on again storm and rain chances through the weekend with the highest chances over east-central Kansas areas.
A well-defined low pressure center over south- central Idaho this morning is bringing gusty winds and scattered light rain and snow showers across the forecast area. The western Magic Valley may see a temporary lull in winds early this afternoon as the low passes overhead. A band of rain and snow showers has developed on the backside of the low across Elmore County, with additional showers expected to form this afternoon under the low center across south-central Idaho. Winds and showers will gradually taper off late tonight as the low moves south and east of the region.
A warm front will lift northeast through the area tonight on the leading edge of deepening southwest flow preceding a south-central Canada to Four Corners positively tilted upper trough. HREF members continue to generate elevated convection over the Upper Midwest tonight, with the bulk of this activity bypassing north through WI and central MI later tonight into early Friday morning north of the sfc warm front.
122 PM EDT Thu Apr 17 2025 High pressure will shift offshore later today with temperatures below normal followed by significant warming for the weekend.
1117 AM MDT Thu Apr 17 2025 - Low pressure system arrives today bringing much colder weather with light snow possible even down to valley floors. Low pressure system will sag south into eastern Idaho today. Ground temps being warm, not expecting much accumulation in the lower elevations. Elsewhere, the amounts from this storm just look too light for advisories, maybe near the pass level with Montana, perhaps around the higher peaks in the hills south of Burley, or even along the spine of the Idaho Wasatch.
254 PM MDT Thu Apr 17 2025 KEY MESSAGES: * Lingering regional low pressure will keep the occasional chances for scattered showers over NE MT through Friday.
1252 PM MDT Thu Apr 17 2025 - Late season cold front racing southward, with widespread snow in its wake. The initial edge of the cold front continues to push southward across central WY this morning, with precipitation beginning to fill in across the north. As the north sfc winds increase later this morning, overrunning precip will begin to build across central Wyoming, and with temperatures steady in the low to mid 30s, precip will be nearly all snow through the day.
A strong upper level low pressure trough dropping southward through the Great Basin region is producing a northerly flow over our area which has resulted in upslope clouds banked up over the southern and eastern portions of the San Joaquin Valley, the Sierra Foothills and the valley facing slopes of the Tehachapi Mountains with reports of fog being noted in Tehachapi and in the Pine Mountain Club area. The cool northerly flow has also resulted in cooler than normal temperatures across our area today and gusty downslope winds along the Mojave Desert Slopes where gusts between 45 and 50 mph have already been reported today and a Wind Advisory remains in effect until 500 AM PDT Friday.
Upper level low pressure will keep moving southward across the eastern Great Basin tonight and Friday.
(Tonight through Friday night) Overhead mid-level ridging will shift east through the short term, but the surface pressure gradient will remain tight between Gulf of America based high pressure and upstream/inland lower pressure.
This will promote well-mixed and warmer conditions with highs Friday afternoon approaching 90 F.
Tonight, low temperatures are forecast to drop into the low to mid 50s east of I-65 and mid 50s to low 60s west of I-65 (where cloud cover will gradually increase and keep temperatures slightly warmer).
With the dry air in place, leaned toward the cool side of NBM guidance blending in the 10th and 25th percentile range yielding low temperatures in the low/mid 50s inland to low/mid 60s coast.
1258 PM CDT Thu Apr 17 2025 An upper ridge extending from the western Gulf to Ontario Canada will shift over the eastern CONUS through Friday morning.
150 PM PDT Thu Apr 17 2025 Cooler, cloudier, and windier conditions expected through Friday.
233 PM EDT Thu Apr 17 2025 Dry high pressure lingers over the area through the weekend with temperatures steadily warming each day.
(This evening through Friday Night) Upper-level ridging in place across the region today will begin to shift eastward overnight while an upper-level trough continues to dig through the Intermountain West into the Four Corners region. By this evening, this trough will help to induce lee cyclogenesis east of the Rockies with a cold front slowly edging southward into the Central and Southern Plains. This enhanced southerly flow regime will continue through Friday and Friday night as the cold front advances farther SE into the Ozarks and eventually toward the Middle Red River Valley of North TX and Southern OK by the end of the short-term period. The threat of more showers and thunderstorms will expand slightly farther SE on Friday night as the cold front edges closer but remains just to our NW.
1152 AM CDT Thu Apr 17 2025 (Today through Friday) Warming trend begins in earnest across central Alabama today, as upper level heights increase with the building 500mb ridge.
854 AM PDT Thu Apr 17 2025 Cooler, cloudier, and windier conditions expected through Friday.
Issued by National Weather Service Topeka KS 332 PM CDT Thu Apr 17 2025 - Turning cooler from northwest to southeast Friday, with cooler below average temperatures persisting through the weekend.
(Tonight) A storm system forming over the southern Rockies and High Plains will result in a troughing west, and ridging east upper level flow pattern setting up over the North American domain into the weekend.
141 PM EDT Thu Apr 17 2025 High pressure will bring fair and dry weather through tonight. It'll be much warmer Friday as a warm front moves through the area, but this may produce a few showers.
An upper trough moving south east of the forecast area has brought breezy east to northeast winds over the coastal mountains and near and at the ridges in western Siskiyou county, and east of the Cascades. A thermal trough will maintain gusty north winds and steep to very steep seas to the coastal waters, with the strongest winds and steepest seas south of Cape Blanco. The thermal trough will vary in strength easing back a bit today into Friday. It looks like the thermal trough will re-strengthen this weekend with strong northerlies again (and a return of possible gale force winds south of Cape Blanco) along with steep to very steep seas.
Afternoon high temps will range from the lower 80s across the east coast metro to upper 80s over SW FL. High temps will again be in the lower 80s across the east coast metro to upper 80s over SW FL.
219 PM CDT Thu Apr 17 2025 - A cold front will bring scattered thunderstorms to central Illinois Friday evening. It's not until the arrival of a cold front Friday evening that guidance begins to erode the cap. Storm coverage will increase late in the evening and overnight, especially south of I-72, in response to a low level jet along the lower to mid Mississippi Valley overspreading southern Illinois.
1229 PM CDT Thu Apr 17 2025 - Warmer temperatures today and Friday, with highs reaching into the upper 80s to mid 90s.