Aikyam-Lab/Synoptic-Bench huggingface dataset:
Upper Plains trough continues to work its way towards the Great Lakes region, and the cold front is moving its way southeast towards the area. Temperatures will be noticeably cooler Monday, with highs only in the upper 50s to mid 60s. With the current forecast, frost may be a possibility on the Plateau where the high valleys may see a bit more cooling, and with dewpoints in the mid 30s, temps may fall a bit further in these areas and develop some frost.
Upper air analysis this morning showed a trough over the middle of the country with south-southwesterly flow over Texas. At the surface, a cold front stretched across the southern part of our CWA. Behind the front winds were from the north-northeast bringing cooler, drier air. The cold front will have moved to the coast by the start of this period. Low temperatures Monday will be nearly 20 degrees cooler than Sunday.
349 PM EDT Sun Oct 15 2017 A cold front crosses through this evening.
There should be a period of mostly clear skies before an approaching trough brings more clouds tonight. Sunshine on Monday will allow for warmer high temperatures than those experienced today.
Toward the end of the week, models are depicting ridging building over the SE CONUS, creating an increasingly amplified pattern as a trough crosses the Intermountain West.
The cold frontal boundary is just entering the lakes region of southeast Texas with a few light showers along and just ahead of the boundary. Look to see rains ending quickly this evening as high pressure moves down into the gulf coast. Drier air spilling in with overnight lows expected into the lower 60s down along the I-10 corridor and mid 50s across central La and into the lakes region.
204 PM EDT Sun Oct 15 2017 Aviation A deepening low pressure system will track through Lower Michigan today.
A building low amplitude ridge will causing fair conditions across the Northern Rockies as temperatures rise to near to slightly above normal the rest of today into Monday.
Forecast confidence is high: Clouds will decrease late afternoon into the evening as low pressure continues to pull away. High pressure will bring mostly sunny skies Monday, with high temps recovering to around normal.
254 PM EDT Sun Oct 15 2017 A cold front will push into the Mid Atlantic tonight followed by a return to high pressure early in the week and hold through the end of the week. Blue Ridge/Catoctins west at or before midnight, east of there overnight.
230 PM CDT Sun Oct 15 2017 High pressure has built in quickly after the passing cold front last night ushering in cooler air, clear skies, and a brisk NW airflow. This colder airmass will keep most of the area from reaching 60F this afternoon and lead to very cool temperatures tonight with low temperatures ranging from the mid 30s in northern Missouri to the low 40s in southern Missouri. Upper level ridging will build into the area Monday and last through the end of the week keeping our area dry for the work week. The southerly flow will add some warm air advection to the area each day with temperatures gradually climbing into the lower to mid 70s by the end of the week.
Today will be the last day of widespread below seasonal temperatures before the warming trend kicks into high gear tomorrow as high pressure amplifies over the Intermountain West. Daytime highs Monday will be right around normal, about 5 to 10 degrees warmer than today's, under sunny skies. Overnight lows should generally remain above freezing for those lower elevation zones south of I-70, though a few pockets of at or below 32 degrees are not out of the question.
338 PM CDT Sun Oct 15 2017 The dry cold front was passing across the Houston Metro at 3 PM with some heavy cloud cover thinning out, which allowed high temps ahead of the front to reach the 90s. Winds will pick up behind the front as high pressure builds in from the northwest. Weather behind the cold front will be very pleasant, with high temperatures in the mid to upper 70s, lows in the 40s and 50s, clear skies, and dew points in the 40s.
248 PM MDT Sun Oct 15 2017 High pressure at the surface and aloft over the western United States will maintain windy, warm, and mostly dry conditions through mid-week before a series of Pacific weather systems move rapidly east across the region later this week.
326 PM EDT Sun Oct 15 2017 A cold front crosses through this evening.
1255 PM CDT Sun Oct 15 2017 A cold front extends along a LLQ, to RSN, to just N of IER, to LFK and UTS line as of 1730Z. These cigs will clear the LFK/MLU terminals by 01-04Z, although areas of AC/cirrus will linger in wake of the lower cigs this afternoon/evening before thinning out late tonight. High pressure is on the way.
1119 AM MDT Sun Oct 15 2017 Now that daytime warming has kicked in across the area, temperatures across much of the Grand Valley and southeast Utah have climbed back to above freezing. Cooler air is in place today following yesterday's cold frontal passage. Low temperatures this morning will be significantly below normal and growing season-ending freezes area expected in the Grand Valley, Utah's Grand Flat and the Canyonlands and Bridges N.
259 PM EDT Sun Oct 15 2017 Showers will taper off through late afternoon as a cold front pushes east across the region. The cold front will usher in a drier and cooler airmass for the first part of the week. The cold front is currently stretching from north central Ohio down into far southwest Ohio/northern Kentucky. In continued low level CAA behind the front, temperatures will fall into the low to mid 40s by late tonight. This will likely lead to some frost development, especially across southern portions of our area, closer to the ridge axis. Overall uneventful extended with GFS/ECMWF and GFSE in better than average agreement with a ridge building in from the southern plains and relaxing the gradient, allowing very light SW flow and sunny skies.
321 PM EDT Sun Oct 15 2017 Strong cold front set to cross north and central Georgia tonight into early Monday. Much cooler and drier conditions will prevail heading into the work week, along with breezy conditions (Monday) as gusty northwest winds occur behind the cold front. Some gusts could approach 30-35 mph late tonight and throughout Monday, especially in the higher elevations of north Georgia.
1227 PM CDT Sun Oct 15 2017 A cold front was making its way through the forecast area early this morning accompanied by showers and a few thunderstorms and some gusty northwest winds. By this afternoon clouds will begin to clear from west to east as high pressure begins builds into the region. Cooler temperatures behind the front will result in afternoon highs just in the upper 50s to the mid 60s. This high will then be overhead tonight resulting in clear skies and light winds.
236 PM CDT Sun Oct 15 2017 Tonight-Early Mon Morning: It'll be a clear & chilly night as strong high pressure covers the southern half of the Great Plains. The onsetting southerly flow, albeit fairly light by our standards, will team with sunny skies to boost temperatures into the mid 70s in all areas with Southeast KS on the cooler end of the spectrum. Thu-Fri Night: Quiet weather continues for all areas as strong, broad upper ridge covers nearly all of the CONUS. upper-deck wave approaches & sends a cold front SE across KS.
319 PM EDT Sun Oct 15 2017 High pressure will shift offshore this afternoon. A cold front will cross the area late tonight through early Monday.
These showers, and those preceding the front to the west will likely dwindle as we move into the evening hours, with showers and storms remaining immediately along the cold front further west as it progresses eastward. Expected scattered showers and thunderstorms to proceed the passage of the cold front as it moves into the area late tonight into tomorrow morning.
315 PM CDT Sun Oct 15 2017 /Through Tonight/ It's a much quieter short term forecast this afternoon as the cold front that has brought a taste of Fall to the area continues to plow through South TX. Breezy north winds have ushered in cooler conditions with temperatures in the 60s and 70s. 24-Bain /Monday through Sunday/ The upper level trough that helped push today's front through the region will be moving across the Northeastern CONUS on Monday, and weak upper level ridging from the west will replace our large scale weather pattern.
239 PM CDT Sun Oct 15 2017 Tonight-Early Mon Morning: It'll be a clear & chilly night as strong high pressure covers the southern half of the Great Plains. The onsetting southerly flow, albeit fairly light by our standards, will team with sunny skies to boost temperatures into the mid 70s in all areas with Southeast KS on the cooler end of the spectrum. Thu-Fri Night: Quiet weather continues for all areas as strong, broad upper ridge covers nearly all of the CONUS. upper-deck wave approaches & sends a cold front SE across KS.
A Pacific trough will bring increasing clouds and winds, cooler temperatures, and chances for precipitation to parts of the area later in the week.
With the upper level ridge now changing into a zonal flow pattern the thermal trough along the coast is weakening and offshore flow is decreasing.
/issued 601 AM CDT Sun Oct 15 2017/ /12Z TAFS/ A strong cold front is quickly moving south across the forecast area and is approaching the Interstate 10 corridor. /issued 340 AM CDT Sun Oct 15 2017/ (Today and Tonight) A cold front is quickly moving south through the forecast area early this morning. Temperatures will be significantly cooler than we we have seen the last couple days, with highs generally in the mid to upper 60s. Expect overnight lows generally in the low to mid 40s, although a few low lying areas and river valleys may drop into the upper 30s.
657 PM EDT Sun Oct 15 2017 A cold front will push into the Mid Atlantic tonight followed by a return to high pressure early in the week and hold through the end of the week. Blue Ridge/Catoctins west at or before midnight, east of there overnight.
Clear and dry weather continues with low temperatures even a few degrees warmer than Sunday night as the airmass moderates.
Sfc cold front is currently pushing S across the region with Nrly winds dvlpng areawide.
Dry weather will accompany a strong upper ridge. Temperatures will be below normal in the lower valleys, and near to above normal in the higher elevations due to the inversion.
446 PM MST Wed Dec 6 2017 Current surface analysis shows a Canadian cold front sliding south of the forecast area now. Upper level analysis shows low pressure over southern Hudson Bay, with large trough covering a good portion of the US. A ridge lies along the west coast with strong northwest flow remaining over the Northern Plains. A warmup will take place for late week and into the weekend as the large upper trough shifts a bit to the east, allowing warmer air under the western ridge to gradually build in. Cold front will shift back north and east as a warm front on Thursday, allowing highs to get back to near average levels in most areas.
555 PM CST Wed Dec 6 2017 Current water vapor imagery showing the upper trough beginning to drop southeast across the cwa. The longer term concerns remain the eastern CONUS trough and timing and strength of resultant short waves rotating around the Hudson Bay circulation. Initially we have a weak trough dropping southeast over the region into Thursday night.
Surface/dewpoint depression seem a little higher the further south into southern KS, so not sure the precip will reach the ground near KICT and further S- SE given the drier low level airmass Ketcham Broad upper trough remains extended from Quebec through the Great Lakes and into the central Rockies, with a number of impulses rotating through this feature. Upper trough will continue to translate east on Fri leaving strong northerly flow over the Plains for Fri as yet another piece of energy dives down the backside of the trough Fri night across the western Great Lakes into the Ohio Valley. This feature will carve out another deep upper trough over the eastern Conus for the start of the work week.
Late Wednesday night to Thursday, a cold front will move across AR from northwest to southeast, and bring winds more north to northwest at 5 to 15 mph with some gusts to around 20 mph. Some weak wind shear will be seen along the cold front as it moves through AR.
/issued 345 PM CST Wed Dec 6 2017/ Wx map shows cold high pressure continuing to build south across the region, providing fairly strong offshore flow with marine warnings issued. Radar showing Surface temperatures are expected to remain above freezing, so no accumulation of frozen precipitation is expected this afternoon or overnight across the region.
Gusty northeast winds will usher much cooler temperatures into southeast Arizona Thursday, and a widespread freeze from Tucson eastward Thursday night. Expect warmer temperatures to return by the weekend.
The Four-State Region being enveloped by thick mid-upper level clouds will promote slightly warmer temperatures especially south of the Interstate-30 corridor. Whereas along and north of the Interstate-30 corridor, computer models hint at thinning/clearing sky conditions overnight, thus temperatures will likely fall to below freezing temperatures. /issued 309 PM CST Wed Dec 6 2017/ Area of lgt precip has slowly shifted south of I-20 with high pressure to the north. Dewpoints have lowered to mainly the lower 20s across northern portions of the area, with mid lvl cloud decks extending nwd to near I-40.
/Issued 319 PM CST Wed Dec 6 2017/ Highly amplified pattern will persist through the next several days with western ridge/eastern trough in the mid/upper levels.
While the ridge continues along the West Coast and shows signs of building, at the surface the pressure gradient is strong enough to generate moderate to locally strong southeast winds that helped to scour low level moisture. Based on late afternoon dew points, temperatures in the Rogue Valley could lower into the lower to mid 20s again.
The cold front that moved through last night is now stalled just off the SE Atlantic coast with the frontal clouds streaming up over my SERN zones. Some drying moving in from the west will gradually break up the low clouds after midnight. Overnight lows will mainly range through the 20s tonight with some around 30 readings in the warmer locations in the southeast. High temperatures will range the upper 20s to the lower 40s.
Dry and locally windy weather will persist through the upcoming weekend as strong high pressure dominates our weather.
/issued 309 PM CST Wed Dec 6 2017/ Area of lgt precip has slowly shifted south of I-20 with high pressure to the north. Dewpoints have lowered to mainly the lower 20s across northern portions of the area, with mid lvl cloud decks extending nwd to near I-40.
1000 PM EST Wed Dec 6 2017 Currently - A ridge just reaches across the Florida Peninsula from an Atlantic high. Dew points continue to edge upwards, and are now in the lower 70s with temperatures in the mid 70s. Short Term Update - The ridge to our north will continue to retreat eastwards into the Atlantic overnight, resulting in winds becoming more east to southeast and relaxing a bit further.
534 PM CST Wed Dec 6 2017 Backdoor cold front produced a snow squall moving south this afternoon. Wet-bulbing and cold air advection will bring a significant cooldown of 10-15 degrees as the front passes through, and temperatures tomorrow will be considerably cooler with highs only in the lower 30s. We remain within north northwest flow within an amplified pattern of ridge to the west and trough to the east.
An elongated region of H925-H850 Fg forcing was wrapping southward along the upstream flank of an H500 trough axis early this afternoon. CAA behind this line coupled with large T/Td spreads and wet bulb temps near freezing has allowed SN to be reported despite surface temps near 40 degrees. Surface ridging builds for the day on Thursday with and -12 C H850 thermal trough overhead and keeping surface temps around the freezing mark.
The cold front that moved through last night is now stalled just off the SE Atlantic coast with the frontal clouds streaming up over my SERN zones. After a near normal December afternoon, temperatures will mainly range through the 20s tonight with some around 30 readings in the warmer locations in the southeast. High temperatures will range the upper 20s to the lower 40s.
A dry cold front will bring a round of below normal temperatures and strong northeast winds to locations along and southwest of the Mogollon Rim tonight and Thursday.
/Issued 220 PM CST Wed Dec 6 2017/ The upper level pattern will continue to be dominated by a trough over the eastern U. with a ridge over the western U. A short wave trough will occasionally move down the back side of the eastern U. trough and across the Panhandles through this forecast. One such short wave trough will move across the region on Thursday. Another shot of colder air will move into the region in association with this trough. A few flurries can not be ruled out tonight into Thursday with this system, but at this point it looks like the lower layers of the atmosphere will be too dry to allow many flakes to make it to the ground, so will leave the mention of them out of this forecast.
547 PM CST Wed Dec 6 2017 Broad upper trough remains extended from Quebec through the Great Lakes and into the central Rockies, with a number of impulses rotating through this feature. Upper trough will continue to translate east on Fri leaving strong northerly flow over the Plains for Fri as yet another piece of energy dives down the backside of the trough Fri night across the western Great Lakes into the Ohio Valley. This feature will carve out another deep upper trough over the eastern Conus for the start of the work week.
447 PM MST Wed Dec 6 2017 00Z TAF CYCLE An upper level trough will move across northern NM tonight. While the trough approaches from the west, a backdoor cold front will move across the central mountains. Light snow across the northern mountains in association with the upper level trough will produce mountain obscurations and reduced visibility tonight and early Thursday. Cold air will continue to funnel into northern and central New Mexico Thursday as an upper level trough brings a few inches of snow to the northern mountains.
A strong cold front will continue to push southward across northeast/north central Florida this evening. Much cooler temperatures were observed immediately behind the cold front.
On Thursday, a weak reinforcing cold front will arrive by late morning into early afternoon as the high pressure system to the west shifts east and a longwave trough embedded within the polar low moves south. The main noticeable impact during the day will be a wind direction change and slightly cooler temperatures while a dry/mostly sub- freezing profile means little in the way of precipitation. With these waves and just enough moisture overrunning the cold polar airmass, could see light wintry mix of sleet/rain/snow over southern Cullman, Marshall, and DeKalb as we experience sub-freezing overnight lows (20s).
/issued 345 PM EST Wed Dec 6 2017/ The pattern across the region will start to change on Thursday as high pressure continues to move away from the region. At the same time, an amplifying mid level trough will continue to dig further southward and it will send a cold front towards Florida during the next few days. This will help to begin to increase the low level moisture in the area during the day on Thursday and into Thursday night.
Temperatures will be affected by the low clouds running along the temperature boundary. Northerly flow aloft is still in control, but the west coast ridge of high pressure starts to nudge its way ever so slightly eastward, cutting off all chances of precipitation here through the remainder of the week.
521 PM CST Wed Dec 6 2017 In the wake of the cold front that brought light snow to the region this morning, a tight pressure gradient will continue to force gusty northwest winds in the 25 to 35 mph range through sunset. The amplified upper-level flow pattern remains, with a ridge centered over the the West Coast and a trough stretching from Hudson Bay down through the eastern states.
Aside from a couple tweaks to the low temps, the forecast was in good shape. /Issued 319 PM CST Wed Dec 6 2017/ Highly amplified pattern will persist through the next several days with western ridge/eastern trough in the mid/upper levels.
The upper low pressure trough was pivoting over the Great Lakes to Ohio Valley, while a west flow still remained into AR. The upper trough is forecast to deepen into the MS Valley, and bring even colder air into AR the next two days. Cold temperatures will be seen, as breezy conditions set up as the cold front and reinforcing cold air move southward. Late Wednesday night to Thursday, a cold front will move across AR from northwest to southeast, and bring winds more north to northwest at 5 to 15 mph with some gusts to around 20 mph. Some weak wind shear will be seen along the cold front as it moves through AR.
800 PM EST Wed Dec 6 2017 A surface frontal boundary currently across the northern Florida peninsula will sag southward into northern portions of east central Florida overnight with a shallow layer of N-NE low level winds in the lowest few thousand feet. Appears any low shower chances will hold off until the daytime hours on Thursday with the low level boundary across the area.
Issued at Issued by National Weather Service GRAND RAPIDS MI/ Water vapor imagery shows a couple features of note rotating around the broader upper low centered just south of Hudson Bay. An even stronger PV max has entered IA as part of a broader area of enhanced PV rotating around the low.
Current surface analysis places high pressure over the Canadian prairies settling into the northern plains. Upper level analysis places trough stretching from the Great Lakes towards the four corners region with ridge over the Pacific northwest. temperatures will moderate some with highs climbing to near average as Pacific ridge starts to scamper east. The RAP/HRRR models are indicating a period of IFR/MVFR ceilings at KMOT and KJMS Wednesday morning, and possibly more extensive, in a band of clouds behind an exiting high pressure system.
539 PM CST Wed Dec 6 2017 The Upper Midwest remains under the influence of an expansive area of high pressure located over southern Hudson Bay, leading to cyclonic flow across the area. As the low slowly moves off to the east, the pressure gradient will slowly relax across the region. An upper ridge will be over the western CONUS/British Columbia region putting the Northland in northerly flow aloft. The western ridge will weaken some late in the period and shift a bit further west but the flow will remain northwest over the Northland.
High pressure will remain in control of the weather tonight bringing mainly dry conditions to South Florida. /issued 345 PM EST Wed Dec 6 2017/ The pattern across the region will start to change on Thursday as high pressure continues to move away from the region. At the same time, an amplifying mid level trough will continue to dig further southward and it will send a cold front towards Florida during the next few days. This will help to begin to increase the low level moisture in the area during the day on Thursday and into Thursday night.
Latest surface observations shows a cold front nearing the Oklahoma border with colder air and gusty northerly winds in its wake across Kansas. The air mass behind this cold front is the coldest so far this season with 850 mb temperatures progged to be -7 to -11C for Thursday afternoon.
Another cold front is approaching the area from the northwest tonight but will pass the area without any precipitation during the day tomorrow. Chattanooga Airport, TN 35 49 29 40 / 10 0 10 10 Knoxville McGhee Tyson Airport, TN 34 46 27 38 / 0 0 10 10 Oak Ridge, TN 34 47 28 39 / 0 0 10 10 Tri Cities Airport, TN 28 44 25 37 / 0 0 10 20.
This is within an area of 925-850 mb frontogenesis in the wake of the cold front.