Aikyam-Lab/Synoptic-Bench huggingface dataset:
951 PM EDT FRI JUN 17 2016 A large high pressure system, will build over the region through the weekend. Some very patchy fog is still possible but afternoon dew points were only in the lower 40s, and overnight mins will be mainly in the 50s. The normally cooler deep valleys may approach the 40s and it will be here patchy fog can't be ruled out. Saturday looks great, just a few degrees warmer than today with full sunshine. Enjoy! Upper level ridge will sprawl across NY and PA and much of the northeast U.
water vapor shows strong upper level low over the Oregon coast and high pressure over the central united states. a more intense wave comes into the state during the day with a cold front moving through in the evening on overnight hours.
Chattanooga Airport, TN 70 89 65 88 / 10 0 0 0 Knoxville McGhee Tyson Airport, TN 65 88 60 86 / 10 0 0 0 Oak Ridge, TN 66 89 61 86 / 0 0 0 0 Tri Cities Airport, TN 58 88 54 84 / 20 0 0 0.
852 PM CDT FRI JUN 17 2016 High pressure to our north will dominate the weather in our area through the weekend.
746 PM EDT FRI JUN 17 2016 In the wake of a cold frontal passage, abnormally dry and cool high pressure will build in over the weekend.
/issued 1253 PM MDT FRI JUN 17 2016/ A low pressure system off the Pacific Northwest coast will begin to lift north over the next 48 hours. A cold front will arrive Saturday afternoon.
1035 PM MDT FRI JUN 17 2016 Upper level pattern continues to be dominated by large scale ridge across the central US. A cold front is moving into northeast Colorado and is just now moving into NW Yuma county. As cold front sags south and LLJ kicks in we should see an increase in thunderstorm coverage, with activity possibly lingering into the night. Regarding Severe Impacts: While this type pattern generally favors pulse type thunderstorms, the high CAPE profiles and higher ELs raises the possibility for taller updrafts and larger hail potential. Saturday: We will be post frontal with a slightly "cooler" air mass in place. Complicating things will be position of ridge center and how soon it moves into our CWA.
520 PM MDT FRI JUN 17 2016 Large upper ridge stretching across much of the CONUS is resulting in southwest flow over the CWA. Behind the cold front that is draped across the northern plains, winds are generally northeasterly around 10-15 kts across the CWA. Upper ridge strengthens over the region on Saturday. As an upper trough moves through southern Canada, a cold front at the surface will push through the northern plains.
1041 PM EDT FRI JUN 17 2016 In the wake of a cold frontal passage, abnormally dry and cool high pressure will build in over the weekend.
/issued 804 PM CDT FRI JUN 17 2016/ A cold front currently extending from Tunica County, MS to Itawamba County, MS continues to push south through our warning area. A slightly cooler, drier airmass will continue to filter into the region behind the front.
Cold front has completely cleared the mid state with high pressure building in from the north VFR conditions area- wide.
18z surface data had high pressure over the Great Lakes.
Mainly a quiet day across the mid state today as the cold front is just south of the area, allowing showers and thunderstorms to develop from northern MS through northern GA. Slightly cooler temperatures can be expected this weekend in the wake of the cold front to be around seasonal normals.
High pressure responsible for such will remain in control through the overnight, with just a few passing thin cirrus (debris from earlier southern Canada thunderstorms). Strong high pressure and dry air remain firmly in control of the weather across the Great Lakes region this afternoon. Otherwise, high pressure will remain built into Lower Michigan through the day and night.
1145 PM CDT FRI JUN 17 2016 Surface/lower tropospheric high pressure located through the Great Lakes region will continue to be the dominate weather feature tonight and Saturday, producing easterly flow and the advection of lower dew points into the area.
/issued 246 PM CDT FRI JUN 17 2016/ SHORT TERM (Tonight through Saturday Night): H5 trough finally starting to drift westward now, with large-scale trough dropping down the East Coast. The ridge should remain strong enough locally during the next 36 hours to inhibit shower formation, but there may be enough instability aloft tomorrow for a few more clouds than today.
All of the showers and thunderstorms have dissipated this evening over South Florida, as some drier air in the low levels of the atmosphere has worked into the area from the south.
720 PM EDT FRI JUN 17 2016 High pressure will continue to bring quiet weather to the area through the weekend.
1149 PM CDT FRI JUN 17 2016 High pressure to our north will dominate the weather in our area through the weekend.
755 PM EDT FRI JUN 17 2016 Cool and dry high pressure will build into the region for the weekend. Another cold front will approach the region toward mid week. The combination of the loss of daytime heating and the passage of the mid/upper level trough will end the threat of any brief showers. Lows tonight are expected to range from the lower 60 north to the upper 60s SE. Cool high pressure will build/extend into the area this weekend, while low pressure remains well off the Carolina coast. This will result in a cool, but dry northeasterly flow with temps expected to be in the lower 80s for highs and lows in the mid to upper 50s, with a few usual rural cold spots dipping into the lower 50s.
614 PM CDT FRI JUN 17 2016 High pressure over the central Great lakes will move little through tonight. Winds should drop off this evening as a combination of decoupling and reduced flow aloft as the 500 mb ridge axis moves into Illinois.
Greatest chances appears to be closer to KPNC which is near and east of low-mid level convergence zone and least affected by warmer temps aloft.
804 PM CDT FRI JUN 17 2016 A cold front currently extending from Tunica County, MS to Itawamba County, MS continues to push south through our warning area. A slightly cooler, drier airmass will continue to filter into the region behind the front.
623 PM CDT FRI JUN 17 2016 Starting to get some storm development late this afternoon along the cold front moving into southeast South Dakota. As this occurs, the cold front will return back north as a warm front through Saturday and Saturday night with the llj increasing into Saturday Night. With weak short waves coming across the region from the southwest through Saturday night along with the warm front lifting north, kept chances of storms in the forecast for this time. Saturday will also be a little warmer along with humid conditions.
Storms are starting to form over the higher terrain of Larimer county with increasing clouds over the mountains. For Saturday the upper level ridge that dropped south of the last few days will make its way north back into Colorado helping to stabilize the region. Convection will be stalled with increased warming in the mid levels due to the incoming ridge for tomorrow afternoon.
/issued 948 PM CDT FRI JUN 17 2016/ Temperatures finally becoming a little more bearable as the loss of daytime heating has dialed temperatures back into the lower to middle 80s. As the Upper level high begins to retrograde westward.
820 PM EDT FRI JUN 17 2016 High pressure will provide a fair weather pattern through the weekend.
737 PM EDT FRI JUN 17 2016 The weather will be fair through the weekend with temperatures gradually warming to above normal as high pressure dominates. Ridging building in at the surface and aloft will aid in subsidence tonight. Lowered min temps by a few degrees across much of the area, due to a very dry air mass in place for mid June with dewpoints in the lower to mid 40s. As a result, efficient cooling will take place with lows ranging from the mid to upper 40s in the higher terrain with lower to mid 50s in the valleys. Upper ridging builds into the region from the west while an upper low spins around off the Carolinas.
1157 PM EDT FRI JUN 17 2016 High pressure will provide a fair weather pattern through the weekend.
Overall, will focus our attention on the warm front that will be draped across the area overnight.
Skies are mostly clear with temperatures in the lower to mid 80s along the island chain. Surface wise, a nebulous ridge lies across our area, with variable to mostly southwest winds reaching up to 10 knots on the waters southeast of the Upper Keys. little change in the forecast evolution and consistency with a deep tropospheric ridge aligned across the Florida Straits and into extreme South Florida. Given the nearby anticyclone, large scale subsidence will limit moisture for at least the next 12 to 24 hours. Given a ridge over the outer straits and the archipelago of Cuba, mostly southwest winds of 10 knots or less will predominate on our entire marine district.
902 PM EDT FRI JUN 17 2016 Building high pressure will ensure a dry and seasonal weekend.
Accompanying precipitation will be focused from the lower Snake Plain northward. A cold front will move through region Sat afternoon with isolated showers/thunderstorms possible along front.
The cold front that sparked convection across the southern counties earlier today now sits just south of the TN River, with dewpoints ranging from the lower 60s north of this front to the lower 70s south of the front. A cold front will shift winds to the north-northeast tonight.
759 PM EDT FRI JUN 17 2016 High pressure will build in for the weekend, bringing in dry conditions and less humid air.
A backdoor cold front moving through the region may help initiate showers and storms during the day on Saturday, but confidence is not all that high at the moment. /issued 252 PM CDT FRI JUN 17 2016/ Temperatures in the lower 90s across the region at this time with heat index values ranging from around 100 to 106 degrees. A weak surface boundary within a region of very unstable air with dewpoints in the low to mid 70s across central Arkansas will contribute to afternoon convection along and mainly north of the Interstate 30 corridor.
726 PM EDT FRI JUN 17 2016 Strong high pressure and dry air remain firmly in control of the weather across the Great Lakes region this afternoon. Otherwise, high pressure will remain built into Lower Michigan through the day and night.
1049 PM EDT FRI JUN 17 2016 High pressure will build in for the weekend, bringing in dry conditions and less humid air.
High pressure continues to work its way into Middle Tennessee from the north, with cooler, drier air replacing our hot, humid air mass from previous days.
948 PM CDT FRI JUN 17 2016 Temperatures finally becoming a little more bearable as the loss of daytime heating has dialed temperatures back into the lower to middle 80s. As the Upper level high begins to retrograde westward.
/issued 217 PM CDT FRI JUN 17 2016/ Upper ridge centered near ELP today stretches northward up to the Great Lakes region.
640 PM CDT FRI JUN 17 2016 Surface/lower tropospheric high pressure located through the Great Lakes region will continue to be the dominate weather feature tonight and Saturday, producing easterly flow and the advection of lower dew points into the area.
Ratzer 235 PM CDT A quiet night ahead with high pressure drifting overhead.
1015 PM EDT FRI JUN 17 2016 High pressure will provide a fair weather pattern through the weekend.
740 PM EDT FRI JUN 17 2016 A large high pressure system, will build over the region through the weekend. Upper level ridge will sprawl across NY and PA and much of the northeast U.
Some moisture hangs around the Southern Appalachian region this evening in association with the upper trough dropping further south across the Mid Atlantic states.
1058 PM MDT FRI JUN 17 2016 Large upper ridge stretching across much of the CONUS is resulting in southwest flow over the CWA. Behind the cold front that is draped across the northern plains, winds are generally northeasterly around 10-15 kts across the CWA. Upper ridge strengthens over the region on Saturday. As an upper trough moves through southern Canada, a cold front at the surface will push through the northern plains.
Starting to get some storm development late this afternoon along the cold front moving into southeast South Dakota. As this occurs, the cold front will return back north as a warm front through Saturday and Saturday night with the llj increasing into Saturday Night. With weak short waves coming across the region from the southwest through Saturday night along with the warm front lifting north, kept chances of storms in the forecast for this time. Saturday will also be a little warmer along with humid conditions.
As a cold front enters and then moves south of area waters late tonight through Saturday.
1155 PM CDT FRI JUN 17 2016 Aloft: Subtropical high pres was over Nrn Mex with a ridge extending NNE to Hudson Bay. This high (594 contour) will expand NE into the Cntrl Plains thru tomorrow. The lows will drift a little NE of their current positions. but remain essentially trapped within the longwave trof that extends from Cntrl Canada SW into the Ern Pac. This should force the front to lift back N as a warm front into the Nrn Plains tomorrow. With the ridge overhead. The remaining trof will deep over the Great Lakes and Ern USA Tue-Fri. This will force the high to decrease in extent but become oriented more N-S near 105W longitude as the longwaves amplify. There appears to be just too much ridging/subsidence/warm air aloft and a lack of upr-lvl support.
Temperatures are generally running 5 degree or so warmer than last night at this time with the exception of the delta which is running slightly cooler. High pressure will continue to build over the region the next several days with a warming trend through the weekend. Temperatures will warm into the lower 90s for most valley areas to the mid to upper 90s for the north end of the valley.
A thermal trough along the coast will persist into Friday.
Evolution of showers/thunderstorms tomorrow still a bit uncertain in terms of both coverage and timing, but latest guidance is suggesting an earlier onset than we have seen the past few days as the weak area of low pressure and associated MSTR pool lifts TWD the NW. Temperatures have climbed into the lower 90s most locations under partly cloudy skies. an inverted trof with and area of low pressure over the west central gulf this afternoon continues to bring us these storms today.
A trough was over the northeast Gulf and northern FL while Atlantic high pressure ridges in across south FL. A trough to the north and a ridge to the south.
As of 9PM, although a front itself is not analyzed, a trough is still evident in surface features extending NE to SW along the western spine of the Cumberland Plateau.
but can/t rule out additional redevelopment especially over portions of Deep E TX and Ncntrl LA as a weak H850-700 trough associated with the broad upper low over the Nrn Gulf begins to shift inland late tonight. This nwd moving trough will also enhance low level moisture advection especially after daybreak Friday.
High pressure will continue to limit convective chances at all sites tomorrow afternoon with SE 5-10 knot winds. This is likely due to the strengthening mid- level ridge axis across the northwestern Gulf of Mexico and southern Texas. On Friday, the mid-level ridge axis remains intact while the mid and upper level low over the central Gulf of Mexico gradually slides westward. The highest rain chances will be confined to the coastal plains as deeper moisture associated with the upper low drifts into the Texas coast.
708 PM MDT THU SEP 15 2016 Upper low continues to evolve slowly over ND with backside trowal wrapping some showers into mainly our east. Visible imagery shows clearing skies in our west as ridge begins to build in from western MT. Spin of upper low seems to be located over SE Montana early this afternoon. All of this will gradually weaken and diminish through the evening as the upper low shifts east well into the Dakotas after midnight. Will begin to see a drier and warmer pattern develop on Friday and continue into the weekend, as the upper low from Thursday slowly drifts eastward into Minnesota.
/issued 239 PM CDT THU SEP 15 2016/ An upper ridge remains located across the Mid-South this afternoon. Current temperatures are in the lower to mid 90s. The upper ridge will begin to break down on Friday. This will allow a cold front that is currently located across the Upper Midwest to sink into the Mid-South over the weekend.
1006 PM EDT THU SEP 15 2016 A back door cold front will settle southwest through central and southern NC tonight.
TFJ An upper low currently centered over Wibaux county, Montana will continue to lift into North Dakota this evening and overnight. Wrap-around precipitation will continue over the lower Yellowstone valley and adjoining areas but will gradually taper off from west to east through the night.
716 PM CDT THU SEP 15 2016 A warm front will spread rain with a few embedded thunderstorms across the forecast area overnight. The waves of showers and isolated storms will continue through friday as an area of low pressure slowly drifts east across the region.
825 PM EDT Thu Sep 15 2016 Humidity will be on the increase Friday ahead of approaching low pressure and a cold front for the weekend. Easterly low level flow from exiting high pressure will keep some stratus into the southeast ridges overnight with mid and high clouds elsewhere. Dew points will begin to increase into the 60s Friday as moisture returns ahead of an approaching mid level trough and frontal boundary. Southeast fetch into the ridges will also bring isolated showers. A broad upper trough will plague the region over the weekend causing widespread rain as a slow moving surface boundary crosses the forecast area.
Not a great deal of change from the morning sounding with deep easterly flow to about 16kft coincidental with the freezing level. /issued 429 PM CDT THU SEP 15 2016/ An area of weak low pressure over the northwest Gulf of Mexico is expected to move slowly northwest towards the Texas coast with an inverted trough of low pressure extending northeast into the central Gulf coast region tonight and Friday. High pressure in the mid to upper levels will be east of the region, and combined with the surface pattern, this will maintain a flow of higher moisture content (2 to 2.
High pressure over the region will maintain status quo, with mostly clear skies inland and low clouds along the coast through Friday.
A warming trend will begin Friday and extend through the weekend as high pressure builds into California and weak offshore flow develops. Compared to yesterday cooler coastal temperatures were observed along the coast while inland locations warmed slightly. A thermal trough developing along the coast and high pressure over the Eastern Pacific will allow temperatures to warm beginning Friday and will last through the weekend.
Water vapor imagery shows a weak upper level trough situated over the Western Gulf, and its orientation should help to bring increased moisture levels this weekend. 20 inches, with K index values in the lower 30s. The 00z LCH sounding specifically showed good saturation at 850mb, most likely due to the influence of the coastal troughing.
Otherwise, a cold front will push into the Panhandles AFT 16/12Z, shifting winds from southerly to northwesterly behind it. As the upper level trough moves eastward over the northern Great Plains, a cold front will come through the area Friday during the day and bring more chances for precip ahead of and along the front.
In the wake of the exiting storm system a ridge will build in over the region and remain in place through the weekend. Water vapor loop shows a trough overhead. High pressure building over northern Utah this evening will create some localized breezy conditions through the north- south oriented canyons of the Washington County overnight. This high will remain over Utah through the weekend with light winds and warming temperatures.
The atmosphere over the Great Valley should remain relatively dry and stable with any diurnal convection mainly limited to the higher terrain on Friday. Expect another forecast period with VFR flight weather while awaiting an upper trough and cold front late in the weekend.
The clouds/precip are the last remnants of moisture associated with the upper-level low pressure system that moved through eastern MT today and is currently centered in the Upper Midwest states. Expect these areas of clouds and rain to dissipate steadily over the next hour or two and the entire forecast area will see clearing skies as high pressure ridging and drier air move in from the west.
641 PM CDT THU SEP 15 2016 A trough over the Rockies is trying to nudge the dominant ridge camped out over the eastern CONUS.
This will result in the potential for some isolated storms to form across the higher terrain. Chattanooga Airport, TN 70 92 70 90 / 10 10 10 10 Knoxville McGhee Tyson Airport, TN 67 92 68 89 / 0 10 10 10 Oak Ridge, TN 68 92 68 89 / 0 10 20 10 Tri Cities Airport, TN 63 87 62 86 / 10 20 10 10.
Weak and broad area of low pressure located across the NW Gulf this evening will continue to slowly west tonight/tomorrow with S TX remaining on the western side of the system. Weak/broad low pressure over NW Gulf prog to drift west tonight with sct SHRA dvlpng offshore. Easterly flow persists ahead of broad low pressure over the W Central Gulf.
Temperatures running about 8 to 10 degrees warmer than last night at this time, and dewpoints about 4 to 10 degrees lower, so expect much less fog in the mountain valleys than last night.
Otherwise, a cold front currently located across east central Colorado, and northwestern Kansas, is progged to have slightly faster forward progression early Friday according to the latest hi-res guidance. Otherwise, a cold front will push into the Panhandles AFT 16/12Z, shifting winds from southerly to northwesterly behind it. As the upper level trough moves eastward over the northern Great Plains, a cold front will come through the area Friday during the day and bring more chances for precip ahead of and along the front.
The trough is making its way east while a fragment is staying back to the west. A cold front is anticipated to be the source of development of convection as it moves through Kansas later tonight through Friday. Of course there is the game of how far south the front will move into the unstable air mass where the bulk shear vectors are 30-50kts with the higher values along the central Kansas and Nebraska borders.
Closed upper low over western ND/SD border will move east tonight and Fri then begin to open up. Water vapor loop indicated two short waves were embedded in the upper low one of which was over eastern WY.
/issued 259 PM CDT THU SEP 15 2016/ Upper level low which has been responsible for the continued rain opportunities will move only a couple hundred miles between this evening and tomorrow as it makes its way across North Dakota. A ribbon of mid level vorticity is set to approach the TX Panhandle early Friday morning to help drive the cold front into the Panhandle.
Clouds tops have continued to warm in Arkansas with little in the way of eastward progress as upper ridge axis runs up through Middle Tennessee on latest RAP.
Weak/broad low pressure over NW Gulf prog to drift west tonight with sct SHRA dvlpng offshore. Easterly flow persists ahead of broad low pressure over the W Central Gulf.
555 PM MDT THU SEP 15 2016 Upper low continues to evolve slowly over ND with backside trowal wrapping some showers into mainly our east. Visible imagery shows clearing skies in our west as ridge begins to build in from western MT. Spin of upper low seems to be located over SE Montana early this afternoon. All of this will gradually weaken and diminish through the evening as the upper low shifts east well into the Dakotas after midnight. Will begin to see a drier and warmer pattern develop on Friday and continue into the weekend, as the upper low from Thursday slowly drifts eastward into Minnesota.
Under partly cloudy skies with light to gentle breezes, temperatures are in the lower 80s in the Florida Keys.