Aikyam-Lab/Synoptic-Bench huggingface dataset:
608 AM EDT Sat May 6 2017 Strong low pressure over the Mid-Atlantic States will lift farther north today. Dry high pressure will dominate Sunday into the middle of the week. Upper low pressure will continue moving through the Mid-Atlantic states and lifting north today. This morning will start off cool and dry, and then warm into the low 70s.
256 AM MDT Sat May 6 2017 Latest water vapor satellite shows upper ridge sliding east and is now centered across eastern Montana and Wyoming. At the surface, high pressure is centered over the eastern Dakotas with a lee trough deepening in Wyoming. Upper ridge will continue to shift east today before gradually breaking down on Sunday as a strong upper low moves onshore over the southwest CONUS. With the upper ridge centered over the area, mostly clear skies and warm temperatures will be common today. Southeasterly winds will increase through the day as the lee trough strengthens with breezy/windy conditions this afternoon across the SD plains. On Sunday, the upper ridge becomes centered over the Dakotas with southwest flow over northeastern Wyoming.
313 AM CDT Sat May 6 2017 High amplitude ridge over New Mexico this morning will progress east across West Texas today bringing very warm temperatures and dry conditions. The ridge then shifts east on Sunday as West Texas begins to come under the influence of a deep closed low currently developing along the central coast of California and which will dig southward over northern Baja by late Sunday.
The amplified upper ridge currently over the Rockies will begin to move slowly into the western Plains today.
306 AM EDT Sat May 6 2017 Strong low pressure over the Mid-Atlantic States will lift farther north today. Dry high pressure will dominate Sunday into the middle of the week. Upper low pressure will continue moving through the Mid-Atlantic states and lifting north today. This morning will start off cool and dry, and then warm into the low 70s.
358 AM EDT Sat May 6 2017 A deep low pressure system will lift out of the southeast through the short term. Have hoisted a wind advisory for the higher terrain (above 2kft) through 18Z with some gusts already being observed around 35-40mph. Another strong impulse rounding the aforementioned trough will approach by mid-afternoon. Those in the higher terrain will be in the 50s/60s. 26 GFS/ECMWF in good agreement as east coast trough weakens and upper ridge builds into the southeast states through mid week. Much of north and central GA should be under the influence of the ridge.
315 AM CDT Sat May 6 2017 A high-amplitude ridge centered along the spine of the Rockies will shift east into the Great Plains this weekend, downstream from a split-stream trough moving onto the West Coast. The ridging aloft will support continued dry weather with above-normal afternoon high temperatures.
1138 PM MDT Fri May 5 2017 Upper ridge axis over the Rockies today will shift eastward to the High Plains on Saturday. Recent precipitation has led to substantial green-up across the High Plains. Attention then turns to the southwest as a slow moving upper low treks across the southwestern United States. Ahead of this low, southeast flow over several days will prime the atmosphere with rich moisture. Instability and shear will also be on the increase as the upper low approaches.
319 AM PDT Sat May 6 2017 Cooler with a chance of mountain showers and thunderstorms this weekend.
458 AM MDT Sat May 6 2017 Latest water vapor satellite shows upper ridge sliding east and is now centered across eastern Montana and Wyoming. At the surface, high pressure is centered over the eastern Dakotas with a lee trough deepening in Wyoming. Upper ridge will continue to shift east today before gradually breaking down on Sunday as a strong upper low moves onshore over the southwest CONUS. With the upper ridge centered over the area, mostly clear skies and warm temperatures will be common today. Southeasterly winds will increase through the day as the lee trough strengthens with breezy/windy conditions this afternoon across the SD plains. On Sunday, the upper ridge becomes centered over the Dakotas with southwest flow over northeastern Wyoming.
339 AM EDT Sat May 6 2017 A slow moving low pressure system will stall over our region this weekend. Temperatures will fall into the lower and middle-30s, allowing snow to mix in with the rain showers.
245 AM EDT Sat May 6 2017 A slow moving low pressure system will stall over our region this weekend. Temperatures will fall into the lower and middle-30s, allowing snow to mix in with the rain showers.
322 AM CDT Sat May 6 2017 Upper ridge centered over the Rockies this morning will slowly drift east through the weekend. As it does an upper trough along the West Coast will move ashore developing a cut off low later today that will drift southward toward Mexico. By early Sunday this low should be over Srn CA.
West winds will increase to 15-20 mph by midday, but will gradually shift from the north as a weak cold front moves into the CWA this afternoon. The deep trough over the east will slowly lift northeast early in the week with another closed cyclone moving very slowly out of the Desert Southwest. A rather high-amplitude ridge will build over the central CONUS during this time.
SHORT TERM (Now through Sunday): Highly-amplified upper level ridging across the Central US will dominate the short term across Deep South Texas and keep conditions benign through Sunday. The axis of the ridge will move overhead the Southern Plains on Sunday with a deep 500mb low pressure system digging behind it towards Baja California.
628 AM EDT Sat May 6 2017 A slow moving low pressure system will stall over our region this weekend. Temperatures will fall into the lower and middle-30s, allowing snow to mix in with the rain showers.
342 AM CDT Sat May 6 2017 Starting off with the 500mb ridge stretching from Mexico up through the border with MT/WY/ND/SD and through Saskatchewan.
Expect mild temperatures today and overnight, then a rebound normal highs and lows will follow on Sunday through the rest of the week with high pressure building over the eastern Gulf of Mexico. Expect the current surge will continue through midday, then high pressure will build across the entire Gulf of Mexico through the day. The low to mid level cloud deck to our north will provide a last gasp to winds early this afternoon. The Gulf of Mexico ridge will then take control of the Keys environment.
The strong upper low pressure system will continue to move east over the east-central US. This has set up a strong northwest upper flow, allowing the cooler and dry air mass to move into the region.
153 AM EDT Sat May 6 2017 An area of upper level low pressure will slowly move northeast into the Appalachians tonight, with rain expected to come to an end over the Ohio Valley during the overnight hours.
/Tonight through Saturday/ Rather benign weather during this forecast timeframe as state will remain in deep northerly flow on backside of large eastern trof. However, a weak cold front will push through the state late tonight with only concern coming in the form of a windshift and some modification to temperatures. Cold advection is expected across the state into Saturday on the backside of the system with cooler temperatures. Readings will be at least 5 degrees cooler than today with more of a cooling across the northeast closest to the thermal trof.
Low pressure will be Northeast of the region this period. A trough will move Southeast of the region this morning, with another moving South across SE GA Tonight. Temperatures will be cooler than normal Today into Tonight.
302 AM CDT Sat May 6 2017 Not much to say about today, other than ideal! Weak backdoor cool front has pushed through much of the forecast area, but really will have little effect on temperatures, with highs just a few degrees cooler than yesterday.
Upper level ridging will build over the Western High Plains tonight and Saturday. Overnight lows tonight will be in the 50s, with afternoon highs on Saturday ranging from the lower 70s east to the lower 80s west. Upper level ridge axis will be over the region at the start of the period, keeping conditions dry and mild Saturday night through Sunday.
VFR conditions are expected to continue the next 24 hours with mid-level ridging overhead Deep South Texas providing plenty of subsidence. Expect VFR conditions to prevail across the Rio Grande valley and northern ranchlands tonight into Saturday as the 500mb ridge across the west central United States continues to provide subsidence across south Texas.
Winds will remain gusty throughout the day today at times today under sunny to mostly sunny skies as high pressure builds into the region. Our warming trend begins on Sunday as temperatures look to be around 5 degrees warmer compared to Saturday. High pressure will keep skies mostly clear with no chance for rain.
Widespread significant rainfall is slowly making its way out of central Indiana as the upper low opens and pushes eastward.
407 AM CDT Sat May 6 2017 (Today and Tonight) Dry and warmer weather will prevail across the area today, as an amplified upper ridge resides across the Plains states. Subsidence associated with the ridge aloft will result in a cloud free sky today, with temperatures 5 to 10 degrees warmer than yesterday. Tonight will be mostly clear and warmer, with light south to southeast winds and overnight lows in the upper 50s and lower 60s.
A strengthening ridge of high pressure in the mid and upper levels will continue to provide a tranquil weather pattern across south central Texas through this weekend.
Primary focus of the forecast turns to forecast temperatures as a drier and cooler air mass invades the region this weekend. Dewpoints this low do not support widespread frost development, but with the potential of temperatures from 30 to 32 across the area, could have a mix of frost with freezing temperatures.
Low temperatures will be bottoming out in the low-mid 50s inland to mid 60s along the coastline, below normal for this time of year by approximately 5 to 10 degrees. Sunny and dry conditions will continue into the afternoon today, with highs reaching into the low to mid 80s across much of Southeast Texas. This ridge begins to slide eastward Sunday, allowing for high clouds to build in.
Early this morning, areas of light rain showers will gradually shift off to the east as the initial trough shifts east of the mountains.
Most spots will remain dry today and highs will top out in the lower to middle 50s. Some patchy frost is likely early Saturday morning and again early Sunday morning as temperatures dip into the lower to middle 30s. Unseasonably cool and somewhat breezy north-northwest flow will persist today on the backside of deep low pressure refocusing into the Eastern Great Lakes. Mainly dry otherwise today, though there could be a few isolated/diurnally driven showers pop up this afternoon into ne IN/nw OH given residual moisture in closer proximity to deep cyclone. Height rises/subsidence as Eastern Great Lakes cyclone begins its slow east-northeast exit will afford fair/cool wx and clear skies tonight. Full decoupling looking unlikely however with low level ridge axis positioned west of the local area.
An upper level trough is stalling along the coast as it undergoes a split. This is placing the forecast area under a southerly flow with a cold front near the Idaho border. There continues to be some thunderstorm along and ahead of the cold front. Behind the front are cooler breezy conditions and some showers.
An area of low pressure in northwest Ontario and northern Minnesota will continue to move a trough, followed by a cold front, will move southeast through the Northland through this evening. High pressure will then nose into the Northland tonight in the wake of the cold front. Saturday will feature high pressure, light to a bit breezy northeast flow, mostly sunny skies, and highs ranging from the upper 40s near the Lake Superior shoreline to the low 60s in central and north central Minnesota.
Winds shifted to the northwest behind a cold front as it slid through the Boise area earlier this morning. An upper trough will support more showers today, which will develop further through this afternoon with most of the activity expected in SW Idaho. The upper trough will split tonight, with the northern portion of the trough shifting to our north and the southern portion forming a closed upper low in southern California.
As cooler air moves in on Sunday, the threat of stronger storms will begin to diminish, but a strong storm or two cannot be ruled out across SW MT (east of I-15) where it will remain unstable longer.
231 AM CDT Sat May 6 2017 Warmer conditions are expected this afternoon as surface winds return from the south and heights increase from west to east under an upper level ridge. This ridge will shift directly overhead tomorrow, and temps will continue to respond in the upward direction. Shower and thunderstorm chances are still expected to increase overnight Tue as a closed low moves somewhere just south of the 4 corners region. The highest rain chances are expected by Wed with this feature.
Mid afternoon surface map shows 993 mb low pressure over northern WV while 548 dm 500 mb low was along the eastern TN/KY border. Strong NNW winds of 15-30 mph and gusts of 25 to 40 mph prevailed today, with strongest winds over eastern IL closer to low pressure system. 12Z forecast models lift strong low pressure and associated upper level low, into western PA/NY by 12Z/Sat, with pressure gradient weakening over CWA by early evening and NNW winds diminishing at sundown. Highs Sunday in the low to mid 60s which is about 10 degrees cooler than normal for mid May.
evidence of the lowering wet bulb zero heights associated with the approaching upper low.
The 11 pm surface analysis showed a cold front moving away from the Southeast coast, and a 994 mb low centered over WV. Vapor imagery and upper air data showed the axis of the anomalously-deep upper trough over our forecast area.
150 AM EDT Wed Jun 21 2017 A weak cold front will cross southeast through the area tonight, wash out between the I-70 corridor and the Ohio River on Wednesday, and lift northeast of the region Wednesday night.
342 AM CDT Wed Jun 21 2017 Hot and humid, will be the prevailing conditions over the next couple of days as the broader pattern across the central Plains transitions from a trough to a more zonal flow, only to be flowed by another large trough, which should make for some rather nice weather for the weekend. In the near term, water vapor imagery shows a weak trough moving to our east this morning with a ridge to our west, which is flattening and spreading east into the Plains States.
A plume of deep layer moisture still looks to be channeled north along its eastern quadrants as ridging from the Bermuda High builds westward into the eastern Gulf.
A weak disturbance is moving through the region today bringing slightly cooler but still above average temperatures to Nevada.
624 AM EDT Wed Jun 21 2017 Early this morning, high pressure is over the Appalachians, whereas a weakening trough lies just to our north over central IN/IL.
Upper level high pressure remains anchored over the four corners region resulting in a significant heat wave across the area.
Lawrence county in area of PVA along leading edge of trough Axis.
450 AM MDT Wed Jun 21 2017 Upper level analysis has broad but flat ridge across the western CONUS with fast zonal flow across the Pacific Northwest through the northern Plains. At the surface, cold front extends from southern Canada through central Montana, with weak warm front lifting through western SD. Cold front over Montana will move into western portions of the area this morning before stalling out over western SD during the day. Highs will range from the lower to mid 80s over northeast WY and the Black Hills, to near 95 over south central SD. Another round of nocturnal convection is possible later tonight as a weak disturbance aloft passes across and eventually pushes the cold front east of the forecast area. Cooler air will move into the area during the morning, with highs Thursday afternoon in the 70s.
At the surface, a weak trough/front will be located over western NE on Wednesday trailing southwestward into CO. This trough will weaken/wash out on Wednesday night as a second front drops south and across the area early Thursday. Best chances for this will be along the Cheyenne Ridge east of the Laramie Range where upslope flow should be able to be maximized and any cap overcome.
Some drying aloft (mid and upper levels) is expected today associated with the building upper heights, but the low level moisture is expected to remain high - characterized by dew points in the mid 60s to lower 70s. Then later this morning into the afternoon the temporary drying of the mid/upper levels combined with subtle sinking associated with the higher pressure should limit shower chances. Mid and upper level moisture is forecast to increase tonight and Thursday as the mid/upper level ridge axis slowly shifts to our NE.
The next chance for precip comes Mon aftn/eve as the eastern Pacific ridge moves to the Rockies. This allows some moistur to flow over the ridge. The presence of the upper ridge will also push temps back up Mon and Tue. High pressure will rebuild into southern Idaho and return nearly clear skies, unlimited visibility, but 15KT to 25KT sustained winds during the afternoon and evening at the Snake River plain airdromes.
Some drying aloft (mid and upper levels) is expected today associated with the building upper heights, but the low level moisture is expected to remain high - characterized by dew points in the mid 60s to lower 70s. Then later this morning into the afternoon the temporary drying of the mid/upper levels combined with subtle sinking associated with the higher pressure should limit shower chances. Mid and upper level moisture is forecast to increase tonight and Thursday as the mid/upper level ridge axis slowly shifts to our NE. Cindy that's currently over the Gulf of Mexico and the subtropical ridge over the western Atlantic, will channel a plume of tropical moisture(PWATS ~2.
As an upper level high pressure sits over AZ/NM, these bouts of energy riding over the ridge will help initiate convection over the high terrain over CO and NM and move southeast over our region.
248 AM EDT Wed Jun 21 2017 Early this morning, high pressure is over the Appalachians, whereas a weakening trough lies just to our north over central IN/IL.
Upper level flow has begun a transition as the ridging over the western U. As this occurs, the boundary will begin lifting back north as a warm front today, reaching northern Illinois this evening.
These will spread eastward overnight as a cold front swings through. A mid-level thermal ridge will cross the region Wednesday ahead of a cold frontal passage that is expected during the afternoon. We leaned on the warmer edge of of model temperature forecast output for highs on Wednesday given expected deep mixing along and to the west of the frontal zone, and in respect to recent model biases. Much cooler, below-normal temperatures are expected late this week and into the weekend.
244 AM CDT Wed Jun 21 2017 One more day of high pressure will serve the area another heater of around 90 degree temps, even if the amount of high clouds is already starting to increase as Cindy makes a move toward land.
Most areas will also be a touch cooler Wednesday, but perhaps more notably will be the lowering of dew points and afternoon humidity across the area.
Expect highs in the lower/mid 80s, lows Wed night in the mid/upper 60s to lower 70s, warmest far S/SE. Cindy that's currently over the Gulf of Mexico and the subtropical ridge over the western Atlantic, will channel a plume of tropical moisture(PWATS ~2.
/issued 349 AM CDT Wed Jun 21 2017/ Generally northerly flow aloft is expected to continue through the weekend with a nearly stationary upper ridge centered across the desert southwest.
149 AM EDT Wed Jun 21 2017 An upper level trough will gradually shift eastward across the Great Lakes through tonight. High pressure will build east across the area Wednesday and Wednesday night, with a warm front lifting northward over the area by Thursday.
341 AM MDT Wed Jun 21 2017 High pressure centered over AZ and NM will continue to control the dry and hot weather over the area today and tonight, though mid level moisture is gradually increasing under the high.
144 AM EDT Wed Jun 21 2017 Weak high pressure will build across our area today providing fair weather.
Atlc ridge axis north of the area combined with TC Cindy in the north central Gulf will produce a deep moist S/SE wind flow. Mid level ridge is forecast to build west across the area with an increase in subsidence/suppression so have tapered PoPs back along the coast to 30 percent with 40-50 percent over the interior and these may be generous.
The upper level ridge will remain pretty much anchored over the southwestern U.
401 AM MDT Wed Jun 21 2017 A gradual cooling trend is expected over the next few days as several cold fronts drop south out of Canada. On Thursday, a cold front will drop south out of Canada, possibly bringing a few showers with it to central MT.
641 AM EDT Wed Jun 21 2017 A cold front will cross the region this afternoon. High pressure will cross the region Thursday.
High pressure remains centered over the desert southwest this afternoon. Afternoon convection has produced some shower and thunderstorm activity that initiated over the mountains and is beginning to drift into the lower elevations. Excessive Heat Warnings remain in effect for lower elevations with Heat Advisories in the higher terrain through Thursday.
305 AM CDT Wed Jun 21 2017 High level moisture has overspread the entire area this hour providing for warmer temperatures.
strong to severe thunderstorms possible in the afternoon (mainly along and south of the interstate) as a cold front moves in from the north. This matches well with partial 850mb mixing and with the cold front moving through seems possible.
316 AM MDT Wed Jun 21 2017 Upper level analysis has broad but flat ridge across the western CONUS with fast zonal flow across the Pacific Northwest through the northern Plains. At the surface, cold front extends from southern Canada through central Montana, with weak warm front lifting through western SD. Cold front over Montana will move into western portions of the area this morning before stalling out over western SD during the day. Highs will range from the lower to mid 80s over northeast WY and the Black Hills, to near 95 over south central SD. Another round of nocturnal convection is possible later tonight as a weak disturbance aloft passes across and eventually pushes the cold front east of the forecast area. Cooler air will move into the area during the morning, with highs Thursday afternoon in the 70s.
Cold front will move to the east early this morning taking scattered showers and thunderstorms with it. Upper level low currently over Alberta will move into Saskatchewan this afternoon. The system will also bring another cold front south during the day on Thursday with gusty NW winds developing once again.
Temperatures behind the exiting Canadian low pressure system will be cooler with highs around 70.
312 AM EDT Wed Jun 21 2017 A weak cold front will cross the area today accompanied by scattered showers, and maybe a few thunderstorms mainly across central and northern sections. High pressure follows the front for tonight and Thursday with dry air and seasonable temperatures.
455 AM EDT Wed Jun 21 2017 A cold front will cross the region this afternoon. High pressure will cross the region Thursday.
Meanwhile, a large upper level ridge over the southwestern United States will start to weaken. We will have a another warm dry day across most of North and Central Texas today as we will be under subsidence from the upper ridge.