Aikyam-Lab/Synoptic-Bench huggingface dataset:
141 PM EDT Tue Aug 29 2017 An area of low pressure along the northern South Carolina coast will move away from the region today. High pressure will then prevail mid week, before a front approaches the region late week. Highs will have a hard time breaking the 80 degree mark in our SC counties, while the lower 80s can be the high point in our GA counties. The low is departing with each passing hour. Tonight: Dry weather is expected as a weak onshore flow develops as high pressure builds over the inland Carolinas and extends to the SE. Lows will range from the mid 60s at cooler spots in our NW tier to the mid 70s right along the GA coast to the south of Savannah.
144 PM EDT Tue Aug 29 2017 An upper level low will bring chances for scattered showers and isolated thunderstorms today.
Short-term forecast of warmer than normal temps and chances for storms later today looks on track.
Warmer air will drift into southern WI ahead of an approaching front on Wednesday, so high temperatures will end up warmer than today with values in the upper 70s.
The highest storm total radar estimates are about 3 inches in Marion County.
1119 AM MDT Tue Aug 29 2017 Strong upper ridging is persisting across the western two thirds of the CONUS with northwest flow continuing aloft over the Great Plains into the upper Midwest. Little change to the pattern through tomorrow though some eastward movement to the ridge is expected.
202 PM EDT Tue Aug 29 2017 Upper level system moves through by midweek, while a low pressure system grazes the mountains today.
1210 PM CDT Tue Aug 29 2017 The HRRR and RAP models suggest an inverted trof (sfc-800mb) will set up across Wrn Neb this afternoon. Strong upper level ridging will continue across the region keeping conditions dry and fair.
304 PM EDT Tue Aug 29 2017 High pressure will remain over the region tonight through Wednesday while an ocean storm passes well to our south.
231 PM EDT Tue Aug 29 2017 Upper low still in the vcnty currently over southern Lk Michigan and lower Michigan. With the potential for some sunshine, max temps should continue on an upward trend with readings in the low to mid 70s. Onshore flow will keep temps along Lk Superior slightly cooler in the mid to upper 60s. Later this week, quiet and dry weather looks to prevail across the region as high pressure drops down from Canada. Accompanying this continental polar airmass will be the arrival of cooler temperatures and the potential for another round of frost. High pressure will begin to push into the region Wednesday night as longwave troughing continues to dig across the Northeast CONUS. This longwave trough is progged to slow and become a cutoff low, thus leaving us in a blocking pattern upstream of the low.
335 PM EDT Tue Aug 29 2017 A weak warm front will linger nearby through mid week before a cold front approaches from the north late in the week. Lows will range from the upper 60s for our NW tier to the lower 70s elsewhere. High pressure to the north will give way to some deeper moisture Wednesday north of a stationary front near the Gulf coast, which should push north into or even through the area Wednesday night as low pressure, once Hurricane Harvey, moves northeast from the Lower Mississippi Valley.
314 PM CDT Tue Aug 29 2017 Tonight through Wednesday, A broad upper ridge will remain across the western conus. Upper level ridging across the western CONUS will deamplify by late week as a northern stream trough traverses the northern Plains. The aforementioned trough will absorb the remnants across the Ohio Valley.
1209 PM MDT Tue Aug 29 2017 Strong high pressure will remain over much of the western U. Enough moisture will cycle around the high to produce isolated mountain thunderstorms this afternoon and Wed. Late Wednesday afternoon a trough moving through the Pacific Northwest will begin flattening the ridge with will bring about a brief change to wetter conditions.
1113 AM MDT Tue Aug 29 2017 Upper ridge will remain in place over the srn Great Basin another day with weak N-NW upper flow across CO.
137 PM EDT Tue Aug 29 2017 Dry conditions and fair weather continue through midweek as high pressure remains over the Northeast.
328 PM MDT Tue Aug 29 2017 A rinse-and-repeat forecast through Wednesday as a strong ridge of high pressure remains overhead. Moisture lingering under the ridge will continue to be recycled today and tomorrow to produce isolated showers and thunderstorms over the higher terrain. An upper level trough will elongate off the coast of the Pacific Northwest throughout the day on Wednesday. The progression of the trough further inland will help flatten the ridge for the latter half of the week.
/issued 417 AM CDT Tue Aug 29 2017/ The cold front has moved through the area and brought drier low- level air into Oklahoma and north Texas.
A ridge of high pressure remained over the region early this afternoon while sub-tropical moisture rotated north through the Great Basin ahead of an advancing Pacific trough positioned off the NW coast.
658 PM EDT Tue Aug 29 2017 A weak area of low pressure will continue east across the Ohio Valley tonight into Wednesday.
326 PM CDT Tue Aug 29 2017 High pressure will dominate over the area tonight, keeping conditions dry under mostly clear skies. Another area of high pressure will begin to drop out of Canada on Wednesday, with a weak frontal boundary pushing through ahead of it.
316 PM EDT Tue Aug 29 2017 Light rain will exit south central and southeastern parts of central PA as low pressure tracks away from the coast tonight and Wednesday.
1232 PM CDT Tue Aug 29 2017 Early morning Water Vapor loop/RAP analysis shows a closed low over Lower MI/IN with a ridge of high pressure building into the area from the Northern Plains. For today, look for that stratus to lift into flat cumulus under the inversion of incoming ridge of high pressure. High pressure moves directly overhead tonight. Will be watching a cold front drop southward through area Wednesday afternoon/evening for a chance of showers and storms. Otherwise, heating ahead of the front should push highs Wednesday well into the 70s to the lower 80s.
1023 PM EDT Sat Apr 22 2017 An upper level low will drift slowly southeast across the Tennessee Valley tonight into Sunday. Upper low to drift south into the TN VLY Sunday. As upper low shifts south expect all pcpn to stay south of the area. Lows tonight will range from the upper 30s in the northwest to the lower/mid 40s across the southeast. The upper level low will continue to drift slowly southeast into the southeastern United States Sunday through Sunday night. Expect highs on Sunday mainly in the low to possibly mid 60s.
912 PM EDT Sat Apr 22 2017 Low pressure tracking toward the Southeastern United States will continue to fuel rain chances over the ridges for the start of the new week. This scenario should confine rain chances to the I 68 vicinity, and over the ridges and eastern CWA periphery during the period.
IFR/MVFR conditions will prevail through the next 24 hours as an upper level low crosses the region and abundant boundary layer moisture remains in place.
Upper level low will approach from W and initiate sct shwrs across area by 23/09Z.
A low pressure system over the epac will continue to pump moisture into the two state area tonight with some showers persisting.
A cold front currently extending from near Falfurrias to Rio Grande City will continue to move south across Deep South Texas through the evening. VFR conditions will prevail after 15z Sunday as high pressure builds into the region. /issued 256 PM CDT Sat Apr 22 2017/ SHORT TERM (Tonight through Sunday Night): The highly anticipated cold front is currently draped across South Texas or from an area just to the northwest of Laredo and angled northeast toward Refugio. Front will move in the Northern Ranchlands over the next few hours across the western portions of the CWA, before the northeastern edge of the front catches up as the upper level low dragging the front continues to pull away across the mid Mississippi Valley. A much cooler day is expected and Sunday with lower dewpoints.
909 PM CDT Sat Apr 22 2017 Cold front sinking south this evening and will move into northern SD tonight. A cold front, currently running east/west over central North Dakota, will continue sinking southward this afternoon and through tonight. While there is good agreement among models with the placement of the warm front Sunday afternoon, a slight difference of 40 miles will yield a drastic changes in temperatures. North of the front, highs may only reach the lower 50s at best.
High pressure will continue VFR conditions under areas of passing mid and high clouds through 08Z.
1208 AM EDT Sun Apr 23 2017 High pressure should maintain dry weather today. Low pressure tracking toward the Southeastern United States will result in rain chances for areas southeast of Pittsburgh for the start of the new work week. High pressure should result in dry weather today as an upper low deepens across the MS/TN Valley regions. This scenario should confine rain chances to the I 68 vicinity, and over the ridges and eastern CWA periphery during the period.
The average date of the last spring freeze has passed for the SE third of the area, and there could be some frost in the ridge and valley region (between UNV and MDT).
806 PM CDT Sat Apr 22 2017 High pressure building over the Plains and reaching eastward into the Midwest this afternoon. overnight lows have come up to the lower 40s. High pressure ridge drifts eastward overnight on Sunday.
859 PM CDT Sat Apr 22 2017 High pressure building into the area from the northern Plains and upper Midwest is bringing clearing skies into central IL this evening, while pressure gradients around the low over the southeast U. If any temperatures drop to the mid 30s for frost it would be in and around Galesburg, but currently looks like it will be just warmer. Will make a small adjustment for cooler temperatures around Galesburg, and some cloud trends, but overall forecast is in good shape. High pressure building over the Plains and reaching eastward into the Midwest this afternoon. overnight lows have come up to the lower 40s. High pressure ridge drifts eastward overnight on Sunday.
744 PM EDT Sat Apr 22 2017 High pressure from the central plains to the western Great Lakes will build into the region tonight through Sunday.
WV imagery indicates a weak upper level ridge of high pressure transitioning eastward across the Intermountain West. Near the surface, a broad area of high pressure is sinking southward across the Western High Plains. High pressure will slide through western Kansas tonight shifting the winds from a northerly direction to a southerly direction. A lee trough will develop tomorrow bringing breezy conditions to much of western Kansas. Lows tonight will generally be around freezing across western Kansas with upper 30s across central and south central Kansas.
1149 PM CDT Sat Apr 22 2017 At 3 PM, high pressure, both at the surface and aloft, was producing light winds and mostly sunny skies. Temperatures were in the lower and mid 60s. For tonight and Sunday morning, a Canadian cold front will move south through northern Minnesota and northern Wisconsin. High temperatures will be in the lower and mid 60s north of the front and range from upper 60s to mid 70s south of this front. This lowered the relative humidity values into the mid to upper 20s along and south of Interstate 94.
926 PM CDT Sat Apr 22 2017 Showers and isolated thunderstorms continue to shift east across deep east Texas and north Louisiana in the wake of a cold front that moved across the region earlier today. Cigs will bounce a bit and KMLU may still start thunder with the back edge just past KSHV, but VFR decks in E TX have been lifted by gusty NW sfc and low level flow as high pressure builds into the area.
There are small chances of low stratus along a backdoor cold front that will sweep swwd from ern WI into south central WI for the afternoon and evening hours. A Cold front will accelerate from nrn Lake MI to srn Lake MI on Sun. High pressure and good radiational cooling conditions will make for another cool night and patchy frost. Swly winds will develop for Sun but a cold front will accelerate down Lake MI and move inland during the afternoon. There are small chances of low stratus along a backdoor cold front that will sweep swwd from ern WI into south central WI for the afternoon and evening hours.
MVFR conditions across SE OK into NW AR will gradually trend toward VFR thru the evening as high pressure and drier air work their way into the region from the north.
839 PM EDT Sat Apr 22 2017 The showers associated with an inverted trough sitting over southwest Florida have diminished over the past couple of hours. A cold front sweeps into the northeast/south-central Gulf Sun then across FL. High pressure builds back in for mid week with decreasing winds and seas.
Another short wave upper trough will push into the area on Sunday.
502 PM MDT Sat Apr 22 2017 This morning's 12Z H500 hand analysis had ridging moving into our eastern CWA. This ridge will remain transitory moving over the Rockies into the Plains over the next 24 hours. The best precipitation chances remain north of interstate 70 with the high terrain favored with this first in a series of storms. Again strong ridging over the North Atlantic and Eastern Pacific will carve out a broad and cold trough over the western 2/3 of the CONUS by mid week. The models are really struggling with this pattern change in how energy is dropped into and rotated out of the larger mean trough.
821 PM CDT Sat Apr 22 2017 Severe thunderstorm activity has diminished over the last hour as a cooler, more stable air mass has moved into the area at the low levels.
A Cold front will accelerate from nrn Lake MI to srn Lake MI on Sun. High pressure and good radiational cooling conditions will make for another cool night and patchy frost. Swly winds will develop for Sun but a cold front will accelerate down Lake MI and move inland during the afternoon. There are small chances of low stratus along a backdoor cold front that will sweep swwd from ern WI into south central WI for the afternoon and evening hours.
/EC/ This afternoon through Sunday, A slight severe weather risk will continue through late afternoon ahead of the cold front which is roughly along the Natchez Trace Parkway as of late afternoon.
A cold front boundary will continue to dive to the south through the evening hours, which is expected to bring chances of rain showers mainly across the northern half of the forecast area through the night tonight. Temperatures overnight will range from the lower 30s north to the mid to upper 30s south.
1245 AM EDT Sun Apr 23 2017 High pressure from the central plains to the western Great Lakes will build into the region tonight through Sunday.
High pressure and good radiational cooling conditions will make for another cool night and patchy frost. Swly winds will develop for Sun but a cold front will accelerate down Lake MI and move inland during the afternoon. There are small chances of low stratus along a backdoor cold front that will sweep swwd from ern WI into south central WI for the afternoon and evening hours.
For the ArkLaTex, shower activity has cleared our terminals cigs will bounce a bit from VFR to MVFR as the cool air deepens with high pressure building into the area. /issued 926 PM CDT Sat Apr 22 2017/ Showers and isolated thunderstorms continue to shift east across deep east Texas and north Louisiana in the wake of a cold front that moved across the region earlier today.
1142 PM CDT Sat Apr 22 2017 Mid/upper level low is slowly moving southeastward early this afternoon and will move away from the area tonight. Look for highs mainly in the low 70s along with plentiful sunshine.
1128 PM CDT Sat Apr 22 2017 Early afternoon surface analysis indicated ridge axis from southwest MN into northwest KS. Some patchy frost appears possible in the favored cooler areas of the CWA. Mixing to around 850 mb yields highs in the lower 70s most places.
707 PM CDT Sat Apr 22 2017 Cold front has moved through all but far southern ND as of 6 pm this evening. For the near term, now through sunset, cold front located from Beach to Bismarck to just north of Jamestown. Temperatures have warmed into the upper 60s to 70F in south central along and just ahead of the cold front. The cold front will continue a slow progress to the southern border by 03z Sunday. Expect snowfall accumulations of between 1 and 3 inches from Minot southeast to Harvey and Carrington; essentially between the Highway 2 and 52 corridor tonight through Sunday morning. Morning snow across north central ND, otherwise mostly cloudy and cooler Sunday with highs around 40F north to the mid 50s far south.
With deeper layer flow lining up more parallel to moisture convergence and forcing, a solid line of storms has managed to form over southeast MS ahead of the cold front with a continued marginal severe risk. /EC/ Prior discussion below: This afternoon through Sunday, A slight severe weather risk will continue through late afternoon ahead of the cold front which is roughly along the Natchez Trace Parkway as of late afternoon.
A cold front, currently running east/west over central North Dakota, will continue sinking southward this afternoon and through tonight. While there is good agreement among models with the placement of the warm front Sunday afternoon, a slight difference of 40 miles will yield a drastic changes in temperatures. North of the front, highs may only reach the lower 50s at best.
/Issued 337 PM CDT Sat Apr 22 2017/ Post-frontal ridge of high pressure will settle into the Texas and Oklahoma Panhandles tonight.
Cold front has shifted off to our south with some gusty northerly winds behind its passage. Cold front continues to push southward this afternoon, with a 10-15 degree drop in its wake. Much cooler with lows in the 50s and lower RH values expected overnight. Clear skies and light winds by Sun night will lead to even cooler mn temps around 50 to mid 50s. A cold front is expected to approach the bays and nearshore waters by late afternoon into early evening then push across the offshore w waters by around 9 PM. A strong offshore flow is expected to develop in the wake of the cold front.
1139 PM CDT Sat Apr 22 2017 Trough that brought the rain yesterday has moved southeast to southern CONUS. A ridge is situated over the Plains which will remain for the rest of the weekend. After the trough fully exited the Plains, there is still residual moisture and cloud cover which has left the southeast quadrant of Kansas with temperatures in the mid to upper 50s. Cloud cover has begun to break through the day and will continue to do this evening as drier air moves in with the above mentioned ridge. Its axis over the area and no cloud cover with the cooler air temperatures could result in patchy frost across central Kansas as mentioned in the previous few decisions.
Upper level trough is moving into Northern CA this evening.
1143 PM CDT Sat Apr 22 2017 Clouds and perhaps some patchy drizzle will linger into this evening as an upper low slowly exits to the southeast.
920 PM EDT Sat Apr 22 2017 High pressure from the central plains to the western Great Lakes will build into the region tonight through Sunday.
530 PM MDT Sat Apr 22 2017 Upper analysis shows ridging over the north central and western CONUS. A low-level trough is crossing the Dakotas. Southwesterly winds will increase tonight across south central SD between exiting high pressure and an incoming low, keeping lows in the lower 40s there. This will result in temperatures ranging from the lower 60s across northwestern SD to the mid 70s across the southern and central SD plains.
After that, a wonderful Sunday looks to be on the schedule with sunny skies and highs in the low to mid 70s. The associated cold front had already moved through most of SE Texas and as of 3:00 PM was on the verge of moving onto the coastline.
624 PM CDT Sat Apr 22 2017 Upper low will drop across north central/northeast Arkansas tonight, then pick up speed early Sunday morning, with clouds clearing out during the day. Over all, conditions will lower a bit early on Sunday morning, before the low clears out and the gradient picks up. Main concerns in this forecast cycle are first period chances of light rain and cooler temperatures. The northwest to north surface wind flow has brought much cooler temperatures to AR, and temperatures have only reached the 50s to 60s over most areas.
635 PM CDT Sat Apr 22 2017 Clouds and perhaps some patchy drizzle will linger into this evening as an upper low slowly exits to the southeast.
The latest model runs are pretty consistent with the previous runs with the timing and evolution of the next upper trough which will bring increasing showers east of the Cascades and the coast tonight into Sunday.
Changes will bring Pops into western mountains slightly earlier Sunday morning, with cold front approaching the region. Ridge quickly building over the region today with pleasant conditions for most locations. Strong trough moving into Pacific NW will induce backing flow aloft over our region Sunday.
All of this activity was developing along a head of a rather strong cold front. Last of the rain should come to an end as a cold front moves through later in the period. /61/ Rain chances in the northern counties this morning, becoming more widespread across the region by the afternoon and evening as a cold front moves through.
634 PM CDT Sat Apr 22 2017 The cold front has pushed off to the south and CIGs have lifted to MVFR in Austin and San Antonio. Temperatures remained steady in the upper 50s and 60s behind this morning's cold front as cold air advection and persistent low clouds associated with isentropic ascent over the front has easily offset any diurnal warming effects. However, winds tonight will remain around 10 mph to allow for enough mixing to keep low temperatures up in the lower to mid 50s in the Coastal and Rio Grande Plains and mid to upper 40s in the Hill Country. Winds will continue to weaken tomorrow afternoon under sunny skies to set up a beautiful spring day with highs in the lower to mid 70s.
VFR conditions will prevail with high pressure building into the region. MVFR conditions across SE OK into NW AR will gradually trend toward VFR thru the evening as high pressure and drier air work their way into the region from the north.
914 PM EDT Sat Apr 22 2017 Low pressure tracking toward the Southeastern United States will continue to fuel rain chances over the ridges for the start of the new week. This scenario should confine rain chances to the I 68 vicinity, and over the ridges and eastern CWA periphery during the period.
/issued 624 PM CDT Sat Apr 22 2017/ Northerly surface pressure gradient will weaken throughout the evening as the center of high pressure moves directly over the area later tonight. Surface flow will gradually return to southerly by Sunday afternoon as the ridge edges to the east. /issued 244 PM CDT Sat Apr 22 2017/ Cool high pressure continues to build into West Texas this afternoon on breezy northerly winds, with 19Z temperatures only in the 50s and lower 60s.
Chattanooga Airport, TN 58 64 52 71 / 80 90 50 10 Knoxville McGhee Tyson Airport, TN 56 61 51 69 / 90 100 60 10 Oak Ridge, TN 54 61 51 69 / 80 100 60 10 Tri Cities Airport, TN 53 60 48 67 / 100 100 90 30 NC.
624 PM CDT Sat Apr 22 2017 Northerly surface pressure gradient will weaken throughout the evening as the center of high pressure moves directly over the area later tonight. Surface flow will gradually return to southerly by Sunday afternoon as the ridge edges to the east. /issued 244 PM CDT Sat Apr 22 2017/ Cool high pressure continues to build into West Texas this afternoon on breezy northerly winds, with 19Z temperatures only in the 50s and lower 60s.
Surface analysis this afternoon shows a low with attendant cold front gradually moving eastward through MS at the moment. Plenty of low level moisture is in place this afternoon with Td generally in the low to mid 60s.