Aikyam-Lab/Synoptic-Bench huggingface dataset:
640 AM EST Thu Feb 8 2018 Central Valley flurries, and scattered, mainly mountain snow showers will persist into this afternoon before an area of high pressure builds northeast from the Ohio River Valley and becomes located over the commonwealth tonight. The high will drift east to the Mid Atlantic Coast by midday Friday, allowing a warm front to develop in its wake from Central PA to Low pressure located over the Greater Chicago Area.
Chattanooga Airport, TN 52 32 59 47 / 0 0 10 80 Knoxville McGhee Tyson Airport, TN 46 30 60 43 / 0 0 10 70 Oak Ridge, TN 47 29 60 43 / 0 0 10 70 Tri Cities Airport, TN 44 26 57 38 / 0 0 10 60.
Progs attempt to slide this weakening trough over northern Wisconsin this afternoon.
The weather pattern should finally change during the weekend as a cold front approaches the area. This will allow easterly wind flow and warmer than normal temperatures to continue across the region. This weekend the mid to upper level ridge will shift eastward allowing a cold front to work its was across the southeast US into northern and central Florida. High pressure will continue to dominate the weather pattern through the weekend with breezy winds east to southeasterly.
Northerly flow and considerable cloud cover behind the front will keep highs closer to normal, in the low 70s, across northern Lake and Volusia counties, with above normal max temps from the mid 70s to low 80s farther south. (Previous Discussion) Cool front will sag through the Volusia County waters by mid day, before dropping south to around Cape Canaveral by early evening, where it will stall and become diffuse as NE-E winds bridge the boundary.
High pressure weakens slightly Friday through the weekend and the onshore flow should bring back more coastal clouds and fog.
/issued 322 AM CST Thu Feb 8 2018/ Wx map shows cold front well south of the coastal waters this morning, with high pressure building southeast across the midwest.
There is some concern that more efficient snow production will develop Sat night given a relatively deep dendritic snow growth zone progged by the NAM, but the GFS temperature profile remains warmer so confidence in that scenario remains somewhat low at this time.
The upper low across eastern Arizona will continue east across the southern Rockies through Wednesday. Unsettled weather will exist north and west of the low across southern and eastern Utah tonight through Wednesday. High pressure aloft over western Utah Wednesday will cover the entire area late in the week, followed by another weather system this weekend.
Another quiet night across the mid state as upper level ridging continues to slowly work its way eastward. Winds will calm down a bit overnight, but should remain strong enough to help keep the low levels mixed and low temps mainly in the low 60s.
An upper level ridge of high pressure remains centered over the Lower Mississippi River Valley this evening. /issued 328 PM CDT Tue May 9 2017/ A slow moving upper level ridge will continue to bring warm and dry weather to the Midsouth again on Wednesday.
1208 AM EDT Wed May 10 2017 High pressure will maintain dry weather today. Areawide rain chance returns with late week low pressure. That front is progged to be shunted eastward as low pressure digs toward the Western Great Lakes tonight.
Other than some mid and high clouds drifting down under the NW flow aloft, the overnight will remain fair and pleasant courtesy of weak high pressure nosing down from eastern Canada. The ridge axis over the Midwest approaches but stays suppressed to the south with the upper low remaining off the New England coast. Even then, the position of the trough and steering flow should keep most of the precip to our west/south. Temps Wed start cool in the 30s to lower 40s, and rise to the 60s for all but the highest elevations of the north. The increasing clouds Wed night will keep mins above freezing over all the area for the foreseeable future.
A weak high pressure area, along the Gulf coastal area and Tennessee Valley, was keeping it mostly sunny, warm and dry across the Mid-State this afternoon. Early afternoon temperatures ranged from the mid 70s along the Cumberland Plateau to the lower and middle 80s elsewhere.
1032 PM EDT Tue May 9 2017 Upper level low pressure will weaken atop the region tonight into late week with an overall decrease in clouds and shower coverage.
1148 PM CDT Tue May 9 2017 Updated aviation section for 06z taf issuance A warm front will remain north of the region through midday Wednesday with mid level anticyclonic flow and lack of forcing keeping it dry through 18z Wednesday.
Chattanooga Airport, TN 60 85 62 87 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 60 84 64 85 / 0 10 0 10 Oak Ridge, TN 60 84 63 85 / 0 10 0 20 Tri Cities Airport, TN 57 80 63 81 / 10 10 30 40.
02z Water Vapor and IR satellite analysis shows upper to middle level moisture rotating up and around an eastward transitioning upper level ridge.
The coverage of storms will increase across the eastern Carolinas late in the week as a series of low pressure systems move along the nearly stationary front.
723 PM EDT Tue May 9 2017 Upper level low pressure will weaken atop the region tonight into late week with an overall decrease in clouds and shower coverage.
A weak upper ridge over the region will keep conditions dry and mild tonight into Wednesday morning. An upper level low will bring a slight chance of showers Wednesday, mainly to the coast and mountains.
A wave of low pressure tracking ewd across IA and IL will bring widespread showers to srn WI from Wed aft through the evening. For Wed aft-nt, a wave of low pressure will track ewd from the Central Great Plains to nrn or central IL. A wave of low pressure tracking ewd across IA and IL will bring widespread showers to srn WI from Wed aft through the evening.
840 PM CDT Tue May 9 2017 Partly cloudy skies across the Four State Region today with the temperatures in the low to mid 80s. The low level moisture and heating created cumulus clouds for many areas around the region but the areas still warmed throughout the day. These clouds are associated with an upper level low pressure system that is spinning over Arizona tonight. At this current time the upper level low pressure system is pulling dry continental tropical air over the east Texas region, but the area will moisten during the early morning and afternoon hours.
612 PM CDT Tue May 9 2017 Updated aviation section for 00z taf issuance A warm front will remain north of the region through midday Wednesday with mid level anticyclonic flow and lack of forcing keeping it dry through 18z Wednesday.
848 PM EDT Tue May 9 2017 High pressure should maintain dry weather through Wednesday. Rain chances return with late week low pressure and continue into the weekend. Clouds will slowly increase on Wednesday in advance of low pressure developing in the Plains, but the weather will remain dry through the day. Highs will be slightly warmer, approaching normal values. As low pressure pushes into the Ohio Valley, rain chances will increase through the period.
750 PM EDT Tue May 9 2017 High pressure over the central Great Lakes will push slowly east tonight and Wednesday.
745 PM EDT Tue May 9 2017 The slow moving low pressure system that has been stuck over our region, will finally start to pull away. Pattern continues with large, slow moving closed lows seperated by narrow ridges. Forecast period begins with the area under a narrow ridge between a low off the New Englad coast and a low developing over the Ohio valley.
Clear skies are expected through the night as an upper level ridge of high pressure continues to build eastward from the Mississippi Valley toward the central Gulf Coast region. The forecast looks on track with lows tonight expected to range from the mid to upper 50s inland to the lower to mid 60s near the coast.
High pressure over Florida and the Keys will remain in place for the next few days, keeping the local area with quiet weather conditions, near to nil chances of precipitation and generally east winds.
/issued 347 PM CDT Tue May 9 2017/ Dirty ridge complete with patchy areas of cumulus and stratocu across area. Aftn highs once again into the lower to mid 80s, with a repeat expected once again Wednesday.
758 PM EDT Tue May 9 2017 What a tough cloud forecast for tonight! Initial thoughts are some thinning/clearing late tonight with high pressure still ridging over northern Michigan. There are already hints on the thinning of the clouds so have hence forth decided to go with the cooler guidance, but not nearly as cold as last night. Wednesday will see moderating temperatures once again, reaching into the mid 50s to low 60s as the airmass continues to modify a bit warmer each day. High Impact Weather Potential: None Pattern Synopsis/Forecast: While by no means warm, a milder weather regime is expected as recent and persistent upper level troughing retreats out of the region (coldest anomalies rotate back northwest into Canada).
1143 PM CDT Tue May 9 2017 Chances for showers and thunderstorms increase tonight as the upper low moves from southern Arizona into western New mexico overnight. Diffluent flow aloft and favored development along and north of the warm front will promote increasing convection overnight with likely pops forecast. Another area for showers to focus along will be the upper trough axis from the panhandle into the northwest sandhills. Cloudy skies, low ceilings and shower chances will limit highs to only the mid and upper 50s eastern panhandle and north central, while southwest and central Nebraska should reach the lower 60s. In addition, north and west of a closed low tracking from northeast New Mexico into the Oklahoma panhandle, a deformation band will develop.
Slightly elevated winds look on tap as well starting late morning, especially KBPT where gradient is progged to tighten the most with developing low pressure to the west. High pressure is located at the surface near the mouth of the Mississippi River. Aloft a ridge is over the northern gulf and north central gulf coast. Over the next few days the ridge at the surface and aloft will shift east while the aforementioned upper low moves into and across the plains.
1047 PM MDT Tue May 9 2017 Current surface analysis shows low pressure over northeast AZ, with weak high pressure over northeast SD. Upper level analysis shows a cutoff low over southern AZ, with persistent ridge remaining across the MS River valley region. A few thunderstorms have also developed over the higher terrain of eastern WY, moving eastward. Building ridge behind passing low will settle across the region late week, with dry conditions and a warming trend.
A low pressure system will move from southeast Arizona into New Mexico through Wednesday, bringing continued cool and occasionally showery weather to northern Arizona.
Other than some mid and high clouds drifting down under the NW flow aloft, it's a fair and pleasant evening courtesy of weak high pressure nosing down from eastern Canada. The ridge axis over the Midwest approaches but stays suppressed to the south with the upper low remaining off the New England coast. Even then, the position of the trough and steering flow should keep most of the precip to our west/south. Temps Wed start cool in the 30s to lower 40s, and rise to the 60s for all but the highest elevations of the north. The increasing clouds Wed night will keep mins above freezing over all the area for the foreseeable future.
843 PM EDT Tue May 9 2017 Some clouds will remain around the region overnight as a warm front stalls nearby, but we will be dry until a low pressure system approaches for later Wednesday.
733 PM CDT Tue May 9 2017 An omega blocking pattern will slowly shift eastward tonight and tomorrow. The quasistationary boundary then lifts slightly northward as a warm front on Wednesday after a new wave of low pressure has developed along it farther to the west. High temperatures on Wednesday should be similar to today but a few degrees cooler due to increased cloud cover and scattered afternoon convection, especially across the northern part of the CWA.
1054 PM MDT Tue May 9 2017 Thunderstorms have developed early this afternoon, as expected, from YNP into the western mountains, and are now moving off the higher terrain to the valleys and basins to the lee of the mountains. Anticipating some areas of patchy fog given the low and mid-level moisture in the area, along with some clearing out by 6am as ridging starts to develop. Then conditions should improve after 9am Wednesday as the high pressure builds to our west over Idaho. Wednesday will thus see mostly clear skies with slightly warmer temperatures and a north-northeast wind as the main upper level low traverse northern NM.
An upper level storm system west of the area will push a dryline/cold front through the area late this evening.
1143 PM CDT Tue May 9 2017 An omega blocking pattern will slowly shift eastward tonight and tomorrow. The quasistationary boundary then lifts slightly northward as a warm front on Wednesday after a new wave of low pressure has developed along it farther to the west. High temperatures on Wednesday should be similar to today but a few degrees cooler due to increased cloud cover and scattered afternoon convection, especially across the northern part of the CWA.
919 PM EDT Tue May 9 2017 Surface warm front continues to move slowly east/northeast across the region this evening. Overnight lows still look on target with readings in the lower 60s. The warm front continues to work its way north across the region slowly.
732 PM EDT Tue May 9 2017 Some clouds will remain around the region overnight as a warm front stalls nearby, but we will be dry until a low pressure system approaches for later Wednesday.
The warm front continues to work its way north across the region slowly.
1040 PM EDT Tue May 9 2017 High pressure over the central Great Lakes will push slowly east tonight and Wednesday.
Elsewhere, a tranquil evening weather-wise will become a tranquil night as high pressure continues to dominate. VFR conditions will prevail through Wednesday evening, though with areas of cumulus development and a slight chance of thunderstorms over much of the higher terrain from the Cascades eastward late day into Wednesday evening. A thermal trough near the coast will weaken tonight. Winds turn southerly Wednesday afternoon ahead of a cold front.
For Wed aft-nt, a wave of low pressure will track ewd from the Central Great Plains to nrn or central IL. A wave of low pressure tracking ewd across IA and IL will bring widespread showers to srn WI from Wed aft through the evening.
511 PM MDT Tue May 9 2017 Current surface analysis shows low pressure over northeast AZ, with weak high pressure over northeast SD. Upper level analysis shows a cutoff low over southern AZ, with persistent ridge remaining across the MS River valley region. A few thunderstorms have also developed over the higher terrain of eastern WY, moving eastward. Building ridge behind passing low will settle across the region late week, with dry conditions and a warming trend.
Persistent southerly winds overnight will lead to the continual transport of rich Gulf moisture across the region, resulting in the low-mid level saturation and thus the development of a stratus deck overnight. /issued 840 PM CDT Tue May 9 2017/ Partly cloudy skies across the Four State Region today with the temperatures in the low to mid 80s. The low level moisture and heating created cumulus clouds for many areas around the region but the areas still warmed throughout the day. These clouds are associated with an upper level low pressure system that is spinning over Arizona tonight. At this current time the upper level low pressure system is pulling dry continental tropical air over the east Texas region, but the area will moisten during the early morning and afternoon hours.
622 PM CDT Tue May 9 2017 Chances for showers and thunderstorms increase tonight as the upper low moves from southern Arizona into western New mexico overnight. Diffluent flow aloft and favored development along and north of the warm front will promote increasing convection overnight with likely pops forecast. Another area for showers to focus along will be the upper trough axis from the panhandle into the northwest sandhills. Cloudy skies, low ceilings and shower chances will limit highs to only the mid and upper 50s eastern panhandle and north central, while southwest and central Nebraska should reach the lower 60s. In addition, north and west of a closed low tracking from northeast New Mexico into the Oklahoma panhandle, a deformation band will develop.
639 PM CDT Tue May 9 2017 Updated for 00Z aviation discussion 00Z TAF discussion: Aside from the low potential for patchy areas of fog to impact TAF sites during the early morning, VFR conditions are expected tonight through Wednesday. High pressure at the surface will gradually slide east of the region during this time, with the ridge axis building over and just east of the CWA through Wednesday afternoon. With moisture subtly increasing through the period, low and high temperatures during the period will be a degree or two warmer, compared to previous days. Lows tonight will fall into the low and middle 60s, and highs Wednesday afternoon will climb into the mid and upper 80s.
914 PM EDT Tue May 9 2017 High pressure should maintain dry weather through Wednesday. Rain chances return with late week low pressure and continue into the weekend. Clouds will slowly increase on Wednesday in advance of low pressure developing in the Plains, but the weather will remain dry through the day. Highs will be slightly warmer, approaching normal values. As low pressure pushes into the Ohio Valley, rain chances will increase through the period.
627 PM CDT Tue May 9 2017 Moist low level southeast flow will precede thunderstorm chances developing later in the night as a strong upper level low pressure system over southern Arizona moves into western New Mexico. The stationary upper low that has been over Baja California and the Sea of Cortez the last 36 hours or more finally appears to be picking up some eastward momentum. Later tonight will see the potential for another round of storms, probably more widespread than the evening round as the parent upper low ejects across northern Sonora toward southeastern Arizona. The middle part of the forecast period still looks to be dominated by a transient upper level ridge.
skies have mostly cleared out and temperatures running close to forecast except a little warmer near the coast.
/issued 328 PM CDT Tue May 9 2017/ A slow moving upper level ridge will continue to bring warm and dry weather to the Midsouth again on Wednesday.
/issued 343 PM CDT Tue May 9 2017/ Upper level ridge of high pressure will remain spread across the Central Gulf Coast through Wednesday night. Normal max temps typically run in the lower/mid 80s. Saw no reason to deviate from that with ridge in place.
The latest obs seem to indicate that the fog is occurring along ridges and where precipitation fell during the day into early this evening.
A weak trough of low pressure will move across the region tonight. The next, more substantial low pressure system tracks through the Saint Lawrence Valley Thursday into Thursday night bringing a round of rain and possibly mountain snow to northern New England.
As of 8 PM MDT the strong Pacific cold front was east of the Oregon Cascades but not yet to Harney County.
Temperatures will be 10-15 degrees warmer than last night.
/issued 1005 PM CDT Wed Apr 11 2018/ Wx map shows high pressure over the East Coast, with low pressure over the Central Plains. /issued 315 PM CDT Wed Apr 11 2018/ High pressure continues to move east across the southern U.
Moisture will work through the region tonight yielding mid/high clouds at all sites, the lowest of which trended northward.
Deepening low pressure on the lee side of the Rockies will strengthen south to southeasterly winds tomorrow, with breezy to windy conditions developing at area terminals by the mid morning through the end of the period. Low temperatures will generally be in the low to mid 60s inland and upper 60s along the immediate coast. Upper level trough will move out of the western US Thursday into Thursday night. At the surface, lee side trough will deepen tomorrow over the High Plains resulting in breezy to windy conditions, especially over the southern Coastal Bend. It will be much warmer tomorrow with highs in the low 90s out west to lower 80s near Victoria. Warm and muggy conditions can be expected tomorrow night with lows in the lower to middle 70s.
High pressure will build across the region on Thursday. Low pressure will track eastward from the Great Lakes region later Thursday and cross the region Thursday night. High pressure continues to retreat this evening as the decaying occlusion approaches. High pressure at the surface and aloft rebuild later tonight into Thursday. Warm air advection with this ridge will generate highs several degrees warmer today.
Other than a windy night across east Texas, with winds between 10-15 mph, a quiet night is expected across the region with overnight lows in the low to mid 50s. /issued 327 PM CDT Wed Apr 11 2018/ Broad upper ridging across the area with sunny skies areawide dry air at all lvls, coupled with increased southerly winds, with warming trend underway. Deep upper trough exiting Rockies and moving across central plains thur night with conditions ripening for both severe weather and heavy rainfall as low lvl jet of 50 to 60 kts sets up ahead of storm development. Instability will be fulfilled with any daytime heating between morning low clouds ramping temps to at least 80 degrees and stg upper lvl diffluence out ahead of upper low.
Min Temps to fall into the mid/upper 40s across SE GA and inland NE FL, while the weak onshore flow at the coast will allow temps to fall into the lower/middle 50s. On Thursday High pressure ridge moves off the Carolinas and steering flow veers around to the SE quickly and warm-up commences with highs in the upper 70s/near 80 over inland areas and lower/middle 70s at the coast in the onshore flow around 10-15 mph as sea breeze moves inland during the afternoon hours.
/issued 327 PM CDT Wed Apr 11 2018/ Broad upper ridging across the area with sunny skies areawide dry air at all lvls, coupled with increased southerly winds, with warming trend underway. Deep upper trough exiting Rockies and moving across central plains thur night with conditions ripening for both severe weather and heavy rainfall as low lvl jet of 50 to 60 kts sets up ahead of storm development. Instability will be fulfilled with any daytime heating between morning low clouds ramping temps to at least 80 degrees and stg upper lvl diffluence out ahead of upper low.
An area of low pressure, currently over the Plains, will race east-northeast to lower Michigan by late Thursday morning. In fact, tonight's overnight lows will be warmer than most of the daily high temperatures we've seen this month (until today that is). One possible trouble area is across the far northern portion of the forecast area where the cold front trailing from tonight's system may sink into the area and produce notably cooler temperatures. A strong low pressure system is forecast to develop starting Thursday night over the Plains.
/issued 943 PM CDT Wed Apr 11 2018/ Warmer temps are the big story this evening with readings in the 50s to lower 60s. /issued 344 PM CDT Wed Apr 11 2018/ The northwesterly flow aloft will gradually transition more zonal over the next 24 hours as the central CONUS ridge dampens. Temperatures at the surface continue to moderate back toward climatology as southerly winds resume, but the surface anticyclone continues to hang out over the southeast portion of the CWA, temporarily delaying moisture advection.
800 PM EDT Wed Apr 11 2018 High pressure will be overhead tonight. This high will shift offshore on Thursday, bringing a southwest flow and warming trend.