Aikyam-Lab/Synoptic-Bench huggingface dataset:
1159 AM CDT Fri Apr 18 2025 (Today through Saturday Night) Today will be the warmest day of the week with high temperatures rising into the upper 80s to low 90s for most areas but the immediate coast, which will stay in the low 80s. Cloud coverage increases tonight, which combined with WAA ahead of an approaching disturbance from the west will lead to overnight lows not dropping below the low 70s for much of the region. Increased cloud coverage on Saturday will lead to slightly cooler temperatures, but still staying in the mid to upper 80s for most of the area with low temperatures again in the low 70s Saturday night. The large upper level low will move into northern Texas/Oklahoma Saturday night with showers and thunderstorms developing along the the I-35 corridor to our northwest.
(This evening through Saturday night) Upper ridging over the northern Gulf Coast states and Gulf. Upper troughing extends from western Ontario to southern California, with another ridge over the Pacific Northwest. At the surface, high pressure was off the Carolina coast, and over the Canadian Rockies. Low pressure was over Wisconsin with a cold front to the Texas Panhandle. Away from immediate coastal areas (upper 70s), temperatures were in the lower and middle 80s with dew points in the 60s under partly to mostly sunny skies.
221 PM EDT Fri Apr 18 2025 Upper ridging will be in control of our weather through the weekend, leading to continued dry weather with above normal temperatures.
123 PM EDT Fri Apr 18 2025 Dry high pressure lingers over the area through the weekend with temperatures steadily warming each day.
135 PM EDT Fri Apr 18 2025 A warm front lifts through the area tonight, bringing milder conditions. High pressure to the south dominate the weather pattern for Saturday with much warmer temperatures.
With the ridge building further and reaching its zenith on Saturday, highs will reach the mid to upper 80s areawide - well above normal for mid April. Current forecast highs fall just shy of the records, though Atlanta will be closest (currently one degree shy) and thus has the highest probability of potentially reaching the record for the date.
The next 5h trough will arrive in the Plains during this time. Other than some late night and morning low cloud cover developing and advecting northward on the moist southerly flow, warm and more humid weather is anticipated Saturday with highs in the lower to middle 80s, and lows Saturday night in the upper 50s to middle 60s.
134 PM PDT Fri Apr 18 2025 Hit-and-miss showers continue through this evening, most likely over the mountains, parts of the high desert, and southern San Diego County.
1243 PM CDT Fri Apr 18 2025 - A light accumulation of snow may create hazardous travel conditions through this morning from the western sandhills into the panhandle, especially up near the Pine Ridge. - Temperatures well below normal today across central and western Nebraska, then trending warmer through the weekend.
223 PM EDT Fri Apr 18 2025 Dry high pressure lingers over the area through the weekend with temperatures steadily warming each day.
159 PM EDT Fri Apr 18 2025 It'll be much warmer today as a warm front moves through the area, which may produce a few light showers or sprinkles. An approaching cold front will bring steadier showers and possibly a thunderstorm late tonight and Saturday.
Such strong high pressure aloft will maintain large-scale subsidence and a very dry air mass above the surface-based mixed layer. Otherwise, strong high pressure aloft is a favorable pattern for hot afternoon temperatures.
232 PM EDT Fri Apr 18 2025 A warm front will lift northward across the area tonight. Southerly return flow will then set up across the east coast, before a cold front tracks through the area Saturday night.
1225 PM CDT Fri Apr 18 2025 Dry and warm weather prevails through the weekend as upper ridging remains in place over the region. High temperatures top out in the lower to middle 80's for most locations each day, with a few interior spots reaching upper 80's today and Saturday. Overnight lows fall into the lower to middle 60's for most spots each night.
(This afternoon through Saturday) An expansive subtropical ridge is in place from the northern Gulf to the western Atlantic. Due to the strong ridge over the area, a cold front will stall well to our northwest today, so conditions will remain dry as the rain associated with that feature remains well to our north and west. There will be some shallow moisture that moves northward from the Gulf tonight, so expect some clouds and perhaps areas of advection fog tomorrow morning, then high-level clouds will move across the area during the day as an upper-level trough begins to rotate across the Desert Southwest.
1108 AM EDT Fri Apr 18 2025 Upper ridging will be in control of our weather through the weekend, leading to continued dry weather with above normal temperatures.
224 PM EDT Fri Apr 18 2025 Temperatures will continue warming through Saturday before a cold front brings showers and possible thunderstorms in the afternoon.
1219 PM EDT Fri Apr 18 2025 Dry high pressure lingers over the area through the weekend with temperatures steadily warming each day.
1245 PM CDT Fri Apr 18 2025 - Turning cooler today, with cooler temperatures persisting through the weekend.
1157 AM CDT Fri Apr 18 2025 - Elevated north winds and much cooler Friday and Saturday.
(Tonight and Saturday) High pressure ridge axis from the Western Atlantic will remain across the NE FL/SE GA region over the next 24-36 hours. Lows a bit milder in the lower 60s along the Atlantic Coastal areas.
234 PM CDT Fri Apr 18 2025 - Elevated north winds and a much cooler Friday and Saturday.
1221 PM CDT Fri Apr 18 2025 - Cooler today with a chance of rain showers this morning into the early afternoon.
Temperatures have been cooler the past few days due to a strong trough in the Great Basin. There also is a 5 to 10 percent chance of afternoon showers and thunderstorms in the Sierra Nevada in the higher elevations today thanks to the trough. However, the trough will slowly slide away and a ridge moves in from the Pacific coast bringing temperatures back up.
This Evening/Tonight Currently this afternoon, a broad ridge is centered across the eastern U. with troughing and the upper jet well to our northwest. At the surface, a weak low is moving into the Great Lakes region with Bermuda High Pressure in the Atlantic. Otherwise, warm and dry conditions will continue overnight with breezy winds remaining over the higher elevations. Saturday On Saturday, troughing to the northwest will slowly advance eastward. Locally, the 500mb ridge will increase to an impressive 5,920m with heights over our area reaching to 5,880m. This will also be combined with continued southwesterly flow and Bermuda High Pressure to our east.
Expect high temperatures to reach the lower to middle 80s this afternoon with south winds gusts at 25-30 mph at times, mainly in western portions of the forecast area. With deep layer ridging over the southeast near the Gulf Coast, southerly flow and mild temperatures will persist tonight as well. Expect overnight lows in the lower 50s east to lower 60s west. The next 5h trough will arrive in the Plains during this time. Other than some late night and morning low cloud cover developing and advecting northward on the moist southerly flow, warm and more humid weather is anticipated Saturday with highs in the lower to middle 80s, and lows Saturday night in the upper 50s to middle 60s.
1242 PM CDT Fri Apr 18 2025 (Today through Saturday) Very warm highs expected today as temps should approach the upper 80s for many locations maybe a bit cooler at the coast.
This morning's 12z sounding revealed very limited moisture with less than an inch of PWAT with the majority of said moisture restricted to the lower levels of the atmosphere. High pressure building over the Eastern Seaboard will freshen winds with Small Craft Advisory conditions expected later this afternoon. Breezes will slacken gradually over the start of the week as the Atlantic high pressure system weakens.
1204 PM CDT Fri Apr 18 2025 - Light showers remain possible today along with cooler and breezy conditions.
A cold front will sweep through the area Saturday, but with little, if any precipitation (low chance -- 20% or less -- along the coast and over the Cascades). /Issued 345 AM PDT Fri Apr 18 2025/ Very dry conditions will persist over the next 24 hours before a mostly dry cold front approaches the coast.
Broad high pressure centered over the western Atlantic remains the dominant synoptic feature influencing our weather over the Florida Keys. This ridge will continue to promote stable and dry conditions through the weekend. Breezes will slacken gradually over the start of the week as the Atlantic high pressure system weakens.
746 PM EDT Fri Apr 18 2025 Temperatures will continue warming through Saturday before a cold front brings showers and possible thunderstorms in the afternoon.
* Warmer weather returns for Easter weekend that extends the beginning of Easter week with mainly dry conditions and afternoon west breezes. The latest RAP analysis shows the CWA with a generally northerly upper air flow being between an upper air trough to the east and an upper air ridge to west. Models show cooler and drier air continuing to come in from the north with these breezy north-northeasterly winds today. Overnight lows tonight expect to be in the lower to middle 30s range in the valleys while higher elevations may low temperatures drop into the 20s and lower 30s.
747 PM EDT Fri Apr 18 2025 Upper ridging will be in control of our weather through the weekend, leading to continued dry weather with above normal temperatures.
High pressure and dry conditions continue through late tonight.
A strong area of low pressure is moving across the region, bringing areas of rain and snow today through Saturday.
Temperatures will be a few degrees warmer than today and will be near normal.
633 PM CDT Fri Apr 18 2025 (This afternoon through Saturday) An expansive subtropical ridge is in place from the northern Gulf to the western Atlantic. Due to the strong ridge over the area, a cold front will stall well to our northwest today, so conditions will remain dry as the rain associated with that feature remains well to our north and west. There will be some shallow moisture that moves northward from the Gulf tonight, so expect some clouds and perhaps areas of advection fog tomorrow morning, then high-level clouds will move across the area during the day as an upper-level trough begins to rotate across the Desert Southwest.
723 PM CDT Fri Apr 18 2025 Updated aviation portion for 00Z TAF issuance and new information added to update section Conditions have become more stable in wake of the cold front that has shifted south and east of northeast WI.
705 PM CDT Fri Apr 18 2025 - Elevated north winds and a much cooler Friday and Saturday.
929 PM EDT Fri Apr 18 2025 Dry high pressure lingers over the area through the weekend with temperatures steadily warming each day.
732 PM EDT Fri Apr 18 2025 A warm front lifts north of the area tonight yielding very mild temperatures on Saturday.
A rather sharp upper level ridge arcs north then northeastward through the Gulf and through the southeastern states. Deep layered ridging will remain in absolute control of our weather through the overnight period.
As the trough gradually moves inland, cloud coverage will increase starting this late evening into tonight.
Upper trough responsible for isolated shower chances today will finally shift east into the four corners region allowing for quiet weather to return to NV.
553 PM EDT Fri Apr 18 2025 Dry high pressure lingers over the area through the weekend with temperatures steadily warming each day.
937 PM EDT Fri Apr 18 2025 A warm front lifts north of the area tonight yielding very mild temperatures on Saturday.
950 PM EDT Fri Apr 18 2025 Showers and thunderstorms will develop across the area tonight and continue through the day on Saturday as a cold front moves into the Ohio Valley. Low pressure will lift into southeastern Canada overnight while an associated cold front slides east toward our forecast area. Dew points soar to the low 60s.
621 PM EDT Fri Apr 18 2025 Temperatures will continue warming through Saturday before a cold front brings showers and possible thunderstorms in the afternoon.
626 PM CDT Fri Apr 18 2025 (This evening through Saturday night) Upper ridging over the northern Gulf Coast states and Gulf. Upper troughing extends from western Ontario to southern California, with another ridge over the Pacific Northwest. At the surface, high pressure was off the Carolina coast, and over the Canadian Rockies. Low pressure was over Wisconsin with a cold front to the Texas Panhandle. Away from immediate coastal areas (upper 70s), temperatures were in the lower and middle 80s with dew points in the 60s under partly to mostly sunny skies.
800 PM EDT Fri Apr 18 2025 Dry high pressure lingers over the area through the weekend with temperatures steadily warming each day.
721 PM EDT Fri Apr 18 2025 High pressure continues to dominate the weather pattern, with a warm southwesterly wind advecting in well above average temperatures through the weekend.
1001 PM EDT Fri Apr 18 2025 Temperatures will continue warming through Saturday before a cold front brings showers and possible thunderstorms in the afternoon.
800 PM EDT Fri Apr 18 2025 A warm front lifts through the area tonight bringing milder conditions. High pressure to the south dominates the weather pattern for Saturday with much warmer temperatures.
741 PM EDT Fri Apr 18 2025 High pressure offshore begins a warming trend through the weekend. High pressure offshore and ridging over the southeastern US will persist through tomorrow. Nothing but dry weather on the way here, with surface and mid- level ridging dominating.
1228 AM CDT Sat Apr 19 2025 Near Term (Now through Saturday night) Through Saturday night, a large positively tilted upper trof stretching from the northern Plains to the 4 Corners region advances slowly eastward then splits, with the northern portion moving off across eastern Canada while the remainder moves into the southern and central Plains.
136 AM EDT Sat Apr 19 2025 Dry high pressure lingers over the area through the weekend with temperatures steadily warming each day.
A broad 500 mb ridge associated with the aforementioned Atlantic high will continue to define Florida Keys weather. Longwave ridges tend to stick around for a while, and that is the trend statistical models show through the start of the work week.
Most of the energy associated with this will be deflected around our area by the ridge, but there will be enough moisture convergence for a few storms.
(Rest of tonight and Saturday) On a big picture, mean upper level troughing was amplifying west of the Continental Divide. At the same time, upper level ridging was building over the SE CONUS. Dry and warmer conditions are forecast on Saturday, with generally more sun than clouds in the morning.
- Freezing temperatures will impact susceptible vegetation in our low elevation valleys Saturday and Sunday morning. An area of low pressure continues to dig into the Four Corners this afternoon. As we head towards sunset and temperatures cool behind the cold front, this will change on mountain passes, especially around Vail Pass and our southern mountains. Freeze Warnings were issued for the Lower Gunnison and Grand Valleys tonight. On Sunday the trough currently bringing us active weather will lift out over the Plains although all of the moisture does not fully scour out. Valleys with vegetation susceptible to the cold should pay attention to overnight lows with many locations dropping below freezing.
The highest probability will be in the Red River Valley and portions of northwest Minnesota. The positively tilted trough from Ontario to the Four Corners will become more split today as the northern branch portion moves off to the east. The southern branch upper low, will move from the Central Plains into the upper midwest, with most precipitation and winds from that system staying to our south and east.
209 AM MDT Sat Apr 19 2025 KEY MESSAGES: - Gusty winds associated with a cold front, mountain snow, and valley rain showers late this afternoon - Scattered showers, breezy winds, and potential for minor road impacts over mountain passes.
A strong area of low pressure moving through the region will continue to bring areas of rain and snow tonight, moving slowly eastward into Saturday. A cold upper low over northern Mohave County will move southeastward overnight, reaching the Flagstaff area around 09Z and then exiting the White Mountains around 18Z Saturday. A dynamic cold front is still churning eastward ahead of the low, currently from about Phoenix to the Four Corners. Instability showers in the core of the low, behind the front, remain possible tonight.
The focus is shifting to the east currently with as the low-level jet shifts that direction. The cold front is slowing down, but continues to slowly shift south.
- Widespread chance for rain arrives Saturday night into Sunday as a low pressure system moves through the Plains/Midwest. It has been a cooler day across the area, with temperatures currently sitting in the upper 40s to mid 50s. An upper level low will reside over the four corners Saturday morning, resulting in southwesterly flow over the forecast area. A broad high pressure system over the northern High Plains will slowly move east throughout the day on Saturday, with partly (south) to mostly sunny (north) skies expected on Saturday. The upper level low will begin to take on a negative tilt Sunday morning as it re-merges with the jetstream. Rain will come to an end Sunday evening as the low moves into the Midwest, with skies quickly clearing.
The upper-level ridge and ridging at the surface will persist across the southeastern states shielding our area from rain chances as the system just to our west slowly pushes eastward.
Discussion: An anomalously strong 500mb ridge with 591-593 dam heights will result in warm conditions across the Southeast CONUS this weekend, and temperatures will run around 10 to 15 degrees above normal across our forecast area. Daily Record High Maximum Temperatures Date Chattanooga Knoxville Tri-Cities Oak Ridge 04-19 91(2002) 90(1941) 90(1941) 90(2002) 04-20 89(2002) 87(2002) 85(2023) 88(2002) We will see varying amounts of high clouds around during the weekend. The low afternoon RH and winds will be highlighted in the FWF.
As of 2 PM, surface observations show a cold front along a line from Stillwater-Norman-Gracemont-Tillman-Crowell. The cold front, however, will be the focal point for additional severe hazards.
Clear skies and the recent snowfall will cause overnight and morning temperatures to drop to the low 20s into the single digits. - Sunday will see a weak low-pressure system move through Wyoming, primarily bringing precipitation to the mountain areas and parts of northern WY.
Most of the forcing will be from southward moving remnant cold front. Coverage could increase by daybreak as warm advection regime strengthens preceding the next eastward migrating mid-latitude cyclone.
152 AM EDT Sat Apr 19 2025 Showers and thunderstorms will develop across the area tonight and continue through the day on Saturday as a cold front moves into the Ohio Valley. Low pressure will lift into southeastern Canada overnight while an associated cold front slides east toward our forecast area. Dew points soar to the low 60s. Warm front will begin to lift northward through the ILN fa, so a temperature gradient will likely be present through our CWA on Sunday.
214 AM MDT Sat Apr 19 2025 - After drier and warmer conditions prevail today, cooler and unsettled weather is anticipated Sunday and into the next work week.
123 AM EDT Sat Apr 19 2025 High pressure offshore begins a warming trend through the weekend. High pressure offshore and ridging over the southeastern US will persist through tomorrow. Nothing but dry weather on the way here, with surface and mid- level ridging dominating. Still have a couple questions on how much cirrus will be around on Sunday, but highs are still expected to reach up into the mid-to-upper 80s inland, while the seabreeze keeps the coastal locales cooler (in the upper 70s). Lows each night in the lower 60s.
1147 PM CDT Fri Apr 18 2025 (This evening through Saturday night) Upper ridging over the northern Gulf Coast states and Gulf. Upper troughing extends from western Ontario to southern California, with another ridge over the Pacific Northwest. At the surface, high pressure was off the Carolina coast, and over the Canadian Rockies. Low pressure was over Wisconsin with a cold front to the Texas Panhandle. Away from immediate coastal areas (upper 70s), temperatures were in the lower and middle 80s with dew points in the 60s under partly to mostly sunny skies. The upper ridging will progress eastward to the Georgia coast by Sunday morning with the southern portion of the upper trough extending from the Dakotas to New Mexico at that time.
Stout southwesterly flow on water vapor imagery this afternoon as the incoming upper low center is rotating through Utah. The sfc cold front from last evening has made its way into central Oklahoma, as gusty north winds on the backside have cooled temps down into the 50s in the afternoon. As the upper low center ejects and deepens across Kansas by early Sunday, progressive and more widespread forcing results in light to moderate rain CWA wide through Sunday evening. Latest cluster analysis shows decent agreement in the 500 mb heights on Sunday afternoon with lesser confidence in the timing of the low and subsequent precip exiting the region on Sunday night. Wrap around deformation bands behind the low therefore could linger longer into the evening while the dry slot stays to our south, therefore ramping up qpf amounts towards north central KS.
Broad scale lift will begin to increase late tonight as a trough approaches the region and begins to take on a negative tilt. This should allow a warm front to lift back into southeast Kansas with some destabilization possible into the late morning and early afternoon. Meanwhile to the north and northwest of the low a band of stratiform rain with isolated embedded thunderstorms will keep central and portions of south-central Kansas soggy through the early afternoon.
Well, I guess that should be "Big bubble, lots of heat!" as that is what we have coming our way again today thanks to a 591dm H5 ridge overhead. Lows tonight won't cool off a ton with temperatures settling in the lower to middle 60s.
352 AM EDT Sat Apr 19 2025 Showers and thunderstorms can be expected at times today as a cold front moves into the Ohio Valley.
Today begins on a quiet note as high pressure continues to slowly push into the Northern Plains. This high will meander across the forecast area throughout the day today, resulting in a wonderful Saturday.
A weak cold front/dry line triple point may develop in the NW Concho Valley/western Big Country and focus development in the afternoon, with a stronger cold front/pacific cold front moving through later in the night.
Meanwhile, the ridge axis settles across Georgia and South Carolina. Locally, onshore flow will continue, enhancing slightly today as the high pressure strengthens to the north. Highs this afternoon in the low to mid-80s, with overnight lows in the 60s. High pressure continues over the western Atlantic through at least mid-week, while slowly drifting towards the Florida peninsula.
1116 PM CDT Fri Apr 18 2025 Updated aviation portion for 06Z TAF issuance Conditions have become more stable in wake of the cold front that has shifted south and east of northeast WI.
Sunday and Sunday night: A longwave upper-level trough is expected to move out of the Rockies and approach our region for Easter Sunday, becoming more negatively-tilted with time.
The isentropic lift spreads north and deepens late tonight into Sunday morning as the upper low over the southern Rockies swings northeast into western Oklahoma.