Aikyam-Lab/Synoptic-Bench huggingface dataset:
133 PM EDT Fri Jun 9 2017 A large upper-level ridge will build over the region over the next 48 hours.
1245 PM CDT Fri Jun 9 2017 Upper level ridging and increasing southerly flow will allow WAA to build into the region starting tomorrow increasing temperatures 3 to 4 degrees higher than yesterday over most of the CWA.
1246 PM CDT Fri Jun 9 2017 Early-morning water vapor imagery and 00z upper-air analysis indicate a mid-level ridge from the southern Rockies into the lee of the Canadian Rockies, which is bracketed by troughing over the Pacific NW and eastern North America. trough will result in the gradual de- amplification of the downstream ridge which will shift into the north-central states today.
602 PM EDT Fri Jun 9 2017 A large upper-level ridge will build over the region over the next 48 hours.
213 PM EDT Fri Jun 9 2017 Low pressure departs eastward into the Canadian Maritimes this evening. A trailing trough of low pressure will bring a few isolated showers until midnight, but overall will see a drying trend overnight into Saturday morning. Saturday will feature partly sunny conditions and warmer temperatures, with afternoon highs in the upper 70s to lower 80s.
That said, the clear skies will also lead to some minor temperature splits, as return flow should keep the ridges a bit warmer. However, return flow will lead to a warmer day with temperatures climbing into the low to mid 80s. Ridging aloft and at the surface will dominate our weather during the first 24 to 36 hours of the extended. Then the weak, subtle feature mentioned before or more specifically some lingering "troughiness" over eastern Texas and the Gulf of Mexico, will drift northward through the deep south.
First cold front is slowly moving across the state this afternoon.
315 PM CDT Fri Jun 9 2017 A deep 500 mb low is sitting just off the Pacific NW coast this afternoon, with weak ridging over the Plains. Most of the eastern half of the CONUS is under northwesterly flow aloft and a weak ridge at the surface. Tomorrow, mostly sunny skies and continued southerly flow as the ridge axis drifts eastward.
A broad upper level low will result in cool weather with periods of rain through the weekend with the possibility of thunderstorms this afternoon and Saturday.
Afternoon highs will range from the upper 70s to the lower 80s.
216 PM CDT Fri Jun 9 2017 The main mid level trough over the western US has allowed southwest flow aloft over the northern Rockies. This has supported a deepening lee side trough and therefore a strong southerly flow. Forecast soundings are indicating that the combination of the higher low level moisture and a cooling boundary layer could lead to low level clouds tonight. The better chances for these clouds appear to be across western and central KS where the higher moisture is forecasted. High temperatures should be warmer than normal in the lower to mid 90s with heat indices up to 100 at some locations.
359 PM EDT Fri Jun 9 2017 A large upper-level ridge will build over the region over the next 48 hours.
Quiet weather and pretty much a clear sky this afternoon across SW Kansas, as high pressure ridging begins to nose in aloft. Boundary layer moisture remains quite elevated, thanks to recent rainfall and evapotranspiration, with dewpoints holding in the lower 60s.
This has occurred along the boundary of a left- over trough, (positioned along the Gulf Stream) which has been responsible for wet conditions over the past several days. Temperatures are in the low to mid 80s across the island chain.
345 PM MDT Fri Jun 9 2017 Visible satellite loop shows mostly clear skies across the area with a band of mid to high level cloudiness moving eastward across the high plains at this hour. Upper level ridge axis has pushed into the central plains with southwest flow increasing across the region. A weak cold front will begin moving southward across central Wyoming late tonight and into tomorrow, so high temperatures may not be quite as warm as today well north of Interstate 80.
Temperatures now running in the low to mid 80s, while dewpoints have mixed down into the mid 50s to near 60 degrees yielding a very tolerable relative humidity value of near 40 percent. Atmospheric moisture will remain limited and primarily confined to the lower levels where a deepening and strengthening southerly flow will become established.
249 PM EDT Fri Jun 9 2017 Low pressure will exit across the Maritimes tonight as high pressure builds in from the west.
252 PM CDT Fri Jun 9 2017 Tonight and Saturday: Continued dry through the period with cooler than normal temperatures tonight followed by near normal temperatures Saturday afternoon. Mid afternoon surface analysis had a broad center of high pressure over the southeast states. This high pressure will become more centered to the east of our area resulting in a light return flow Saturday. Circulation around the low will help PWATs increase back above one inch Saturday; up from just over a half inch this morning. Surface dew points in the 50s this afternoon will hold in the lower 60s Saturday afternoon. Thus, warmer and a little more humid conditions will exist Saturday.
255 PM MDT Fri Jun 9 2017 Hot and dry conditions will be continuing across the forecast area through this weekend as we see southwest gradients winds gradually increase ahead of low pressure system moving across the Pacific Northwest.
The TN Valley will remain under a retreating broad upper level trough expanding over much of the eastern CONUS, while high pressure slowly builds at the surface. Despite the abundant sunshine, temperatures will still be a couple of degrees below normal, with highs expected to be in the low to mid 80s. High pressure remains in control of the weather pattern over the area through the remainder of the forecast. Lows in the lower 60s are expected by Saturday morning, despite light winds and clear skies.
153 PM MDT Fri Jun 9 2017 Upper ridge axis is centered over the northern plains, and some mid/high clouds are streaming into the CWA through southwest flow. Ahead of the 850 mb trough, models are showing a 50 kt low-level jet across south central SD. Then behind the trough/cold front, 850 winds of 30-40 kts, along with impressive pressure rises and CAA, will support gusty northwest winds across portions of western SD. Saturday will be dry and slightly cooler, with highs generally in the 80s.
241 PM CDT Fri Jun 9 2017 Current analysis shows high pressure overhead with just some scattered CU this afternoon with temps in the mid to upper 70s and dew points in the low to mid 50s. High pressure will slowly slide east of the Carolina coast allowing muggy conditions to return over the weekend.
320 PM EDT Fri Jun 9 2017 Low pressure over Lake Huron will track across the Lower Lakes tonight dragging a weak cold front across the Forecast area. A strong upper level ridge will build over the area this weekend ushering in hot and humid conditions. Low pressure Over Lake Huron with the the trailing cold front into Central Illinois. The Model trends have the cold front into CLE around 00z then moving east of the forecast area by 06z. Strong upper ridge builds over the entire forecast area this weekend ushering in hotter and more humid conditions.
106 PM EDT Fri Jun 9 2017 The slow moving upper low that brought below normal temperatures and showers at times across the region this past week will finally begin to lift northeast and away from the region today. A weak ridge of a high pressure will build over the state today providing plenty of sunshine and dry conditions through at least the mid afternoon hours. A warm front and weak wave of low pressure will slide southeast from the upper great lakes region late today and will drift across northern Pennsylvania or southern New York tonight.
1238 PM CDT Fri Jun 9 2017 A quieter day today across the forecast area, as surface boundary currently located near the Missouri River lifts northeast as a warm front through the day. Front is expected to still be located in our far northeast areas by peak heating, and weak convergence along the boundary could trigger isolated storms east of the Buffalo Ridge during the mid-late afternoon. Given fairly dry soundings and increasing southerly flow behind the warm front, looks like an optimum mixing day, and have continued to favor warmer/drier/windier bias-corrected guidance options for today. A cold front will move across the area from western Dakotas Saturday morning, but breezy to windy conditions ahead of the front will be the main impact. Tightening pressure gradient will yield windy conditions east of I-29, with highest gusts across the Buffalo Ridge area.
Friday afternoon WV imagery showed a closed upper low positioned offshore from Vancouver Island BC.
128 PM EDT Fri Jun 9 2017 The slow moving upper low that brought below normal temperatures and showers at times across the region this past week will finally begin to lift northeast and away from the region today. A weak ridge of a high pressure will build over the state today providing plenty of sunshine and dry conditions through at least the mid afternoon hours. A warm front and weak wave of low pressure will slide southeast from the upper great lakes region late today and will drift across northern Pennsylvania or southern New York tonight.
1257 PM CDT Mon May 29 2017 A reinforcing cold front moves through this morning.
339 PM CDT Mon May 29 2017 A deep, quasi-stationary trough continues to spin over the northern Great Lakes this afternoon. Several weak impulses are noted on the periphery of this cyclone on the water vapor loop, but winds aloft across the Mid-South are relatively light. A broad area of moist southwesterly flow in the upper-troposphere is streaming across the Lower Mississippi Valley, helping to maintain the cirrus overhead.
Cooler conditions with some light showers will return through mid-week.
Rodriguez 227 PM CDT Showers diminish and push east Tuesday night as a secondary cold front and the upper level vort streamer move through.
A cooler weather pattern is in store for the rest of the week, with periodic chances for showers.
/issued 755 AM EDT Mon May 29 2017/ Morning water vapor satellite imagery is showing comparatively dry conditions over the central and southern portions of the Florida Peninsula under a mid level ridge centered just east of the region, while much higher moisture is visible over the Panhandle associated with thunderstorms along a weak front. This front is not forecast to be able to displace the ridge across the Florida Peninsula, and generally rain free conditions are expected once again this afternoon.
Have left the previous forecast which showed slight shower chances over the Lower Kissimmee River region. Mid level ridge will retreat into the Atlantic through Tue. Low level high pressure ridge over the southern peninsula will maintain a light southwest flow, then as the east coast sea breeze forms and moves steadily inland, expect initiation of isolated to scattered showers/storms early to mid afternoon.
1142 AM MDT Mon May 29 2017 The ridge of high pressure over the Intermountain West will dominate the weather pattern for today with mainly mostly sunny skies and seasonable temperatures expected. Models have cut back a bit on the influx of moisture and resultant convective, but still expect isolated showers and thunderstorms over the high country this afternoon before diminishing this evening. Models were consistent in shifting the ridge eastward Tuesday night allowing more moisture to advect into southern Colorado.
330 PM CDT Mon May 29 2017 Cutoff low pressure aloft will loiter over the Great Lakes through the short term period. Temperatures will climb into the low 50s north to the upper 50s south. Depending on where the holes in the clouds develop, some spots may jump into the low 60s, especially from the Brainerd Lakes through Hayward and into the Park Falls area. The last upper level long wave trof works its way across the forecast area Tuesday night. This means some POPs in the evening, ending overnight as the trof departs.
A mid to upper level ridge will hold over South Florida and the Keys for another 36 hours or so, then push eastward separating from a somewhat weaker ridge focused over the central Gulf of Mexico. At the surface, high pressure will modulate only slightly in strength while oscillating very little in position over the next several days.
136 PM MDT Mon May 29 2017 19z surface analysis had low over central ON with upper low spinning just north of Lake Superior. Tonight, upper low moves northeast as upper ridge builds over the Rockies. Tuesday, upper ridge and subsidence bring a pleasant day to the area with temperatures near guidance.
557 PM EDT Mon May 29 2017 Ridging over the region will weaken today as a frontal boundary slowly pushes into the area. Will continue to increase pops from dry into the high chance category through the afternoon and into the evening hours.
/Issued 349 PM CDT Mon May 29 2017/ Developing Cu field over the Panhandles as colder H500 temperatures move in out ahead of an upper level perturbation over the high terrain of NM/CO indicate upper level instability for some possible diurnal convection later this afternoon and evening. Latest radar shows convection developing over the high terrain over New Mexico.
This should help keep us mainly dry through the daytime period and slightly cooler with highs ranging from the lower 70s northwest to the upper 70s in the far southeast. Additional short wave energy rotating around an upper level low over the northern Great Lakes will work across our area Tuesday night. However, moisture is still somewhat limited so will keep pops in the lower chance category.
Tonight and Tuesday A cold front that was in eastern Wisconsin moved out of the state this morning. Another mid level short wave trough will be passing through the area on Tuesday, so expect chances for showers to increase during the day. It looks to be cooler on Tuesday than today. with highs generally ranging from the lower 50s to the lower 60s.
Latest visible satellite imagery shows a decrease in the high clouds across the tri-state area and with daytime heating, cu has begun to develop. Lows tonight will remain above average with lows in the lower 70s inland to mid 70s along the coast.
The upper level ridge continues over the Pacific Northwest this morning, but has shifted east enough that the ridge axis is over eastern Washington and Oregon. This ridge will largely remain in it's current location through today, then begin to slowly shift east tonight as a weak Pacific system approaches the region.
The moisture is being pulled up in response to a 90 kt jet streak rotation around the base of a trough which remains over the midwest.
High pressure ridge aloft nudges a bit closer to Colorado on Tuesday with a bit weaker northwest flow aloft over the mountains. With the ridge approaching, temperatures will be a few degrees warmer on the plains and slightly drier. Scattered showers and thunderstorms over the higher terrain and adjacent plains will be decreasing Tuesday evening, likely never reaching the far eastern plains due to stable conditions expected.
Further offshore, based on latest obs from buoys & rigs it looks like a weak coastal trof has set up 20-40nm offshore. As the coastal trof washes out on Wed, guidance suggests another surge of deeper Gulf moisture moves up the coast and back inland.
See below The next upper level disturbance rotating around the large upper low over Ontario will move south across the region today. Cooler air and clouds also spreading southward currently, and wonder if this may limit instability a bit today.
The afternoon visible satellite imagery shows some clearing of the low clouds has taken place across south central Texas.
1204 PM CDT Mon May 29 2017 The latest water vapor imagery shows a short wave trough moving east southeast through southeast South Dakota. On Tuesday and Tuesday evening, a series of short wave troughs will move southeast through the region.
629 PM EDT Mon May 29 2017 An unsettled weather pattern will continue through the week as a series of cold fronts affect the region. As the upper trough and associated sfc front progress eastward tonight, more of this convective may develop, so have eliminate the evening break and have maintained at least isolated pops through the night for those areas.
Today this has resulted in the development of scattered showers and thunderstorms, most of which appear to be closely linked to the higher terrain and are falling apart once they leave the mountains.
A large ridge of high pressure will provide dry and increasingly warmer temperatures to the Great Basin for Memorial Day into Tuesday. A Pacific trough will bring increasing chances for showers and thunderstorms to Nevada by midweek.
459 PM EDT Mon May 29 2017 An unsettled weather pattern will continue through the week as a series of cold fronts affect the region.
1258 PM CDT Mon May 29 2017 A cold front progressing across Illinois today may trigger a few showers and storms. Large upper low clearly seen on water vapor imagery early this morning just north of the Minnesota arrowhead. While a lot of the activity will be closer to the low, the arrival of one of the waves will trigger some isolated convection by mid afternoon from about I-55 east, where CAPE's are progged to reach about 1000 J/kg. As the upper wave should arrive later in the day, the warmer weather will linger for another day, with highs mainly in the lower 80s. The upper pattern will be slow to transition through mid week, but the broad trough will slowly shift east as the upper low hangs out over northern Ontario.
Model guidance suggests upper low over the northern Great Lakes will slowly drift off to the east during this period, with west to northwest upper flow locally.
1252 PM CDT Mon May 29 2017 Today is expected to be cooler and breezy with increasing clouds, scattered showers, and even an isolated thunderstorm possible. Low clouds and drizzle were wrapping around this low, and should overspread the region this morning.
109 PM EDT Mon May 29 2017 Ridging over the region will weaken today as a frontal boundary slowly pushes into the area. Will continue to increase pops from dry into the high chance category through the afternoon and into the evening hours.
242 PM EDT Mon May 29 2017 High pressure passes south of the area today.
254 PM EDT Mon May 29 2017 A weak cold front will drift into the region tonight then drift back north on Tuesday. Another warm night with low temperatures right around 70 to the lower 70s. Expect more cloud cover with temperatures a few degrees cooler than today.
254 PM EDT Mon May 29 2017 A weak trough will bring a slight chance for scattered showers and thunderstorms this afternoon into early this evening, mainly across northeast Indiana, south-central Lower Michigan, and northwest Ohio.
However, Tuesday night another weak cold front and wave rounding the base of the upper level trough will bring a renewed chance for scattered showers and perhaps a few thunderstorms.
Upper low centered just north of Lake Superior will broaden with the addition of upper energy dropping through Central Canada and the Northern Plains.
Weak surface ridging will keep precip in check for the remainder of the region. Lows should be in the low to mid 50s with easterly winds.
Temps tomorrow will be fairly similar, maybe a couple degrees cooler than today.
Mid level high pressure centered east of the state today is continuing to ridge across the area, but will gradually slip east and away tonight and Tuesday. At the surface, the sub tropical ridge will gradually lift north across the Florida Peninsula through Tuesday, with light low level flow becoming increasingly southerly. This increased moisture, combined with reduced ridging aloft will allow for better chances of showers and thunderstorms Tuesday afternoon, along sea breeze boundaries.
209 PM CDT Mon May 29 2017 Northwest flow prevailing this afternoon after a weak cold front moved through the region earlier this morning. Off to our northwest, a ridge of high pressure stretching from the northern High Plains will continue to extend southeast into the lower Missoui Vally overnight, yielding dry conditions and mostly clear skies through the evening and early overnight hours.
Much of this activity is fading quickly under some thinning cirrus ridging overhead. The front is lifting back Northward weakly on S/SW winds of only 5 mph and the NE winds are not going to be cooler over the North under late May sunshine.
700 PM EDT Mon May 29 2017 A weak cold front will push east across the area tonight.
411 PM MDT Mon May 29 2017 Latest water vapor imagery shows a stalled out upper low over the Great Lakes area. Ridge of high pressure extends from northern Arizona, through Nevada, up into Idaho and eventually up into British Columbia this afternoon. CWFA under northerly flow on the east side of this ridge. Surface analysis showing a weak cold front extending out of the Great Lakes low extending southwestward into northern Kansas and eventually into the western nebraska Panhandle. Did get a few spits of rain outside a few minutes ago here at the office, so will continue the low chance PoPs we have going for this afternoon. We stay in this pattern as upper low over the Great Lakes barely moves through Tuesday.
127 PM CDT Mon May 29 2017 Upper low continues to spin across the western Great Lakes. The next lobe rotating around the low could help trigger isolated showers today across the northern Plains/upper Mississippi River Valley, in response to the cool temps aloft and very steep lapse rates.
The main 500 mb low that brought lingering shower chances to the region for the beginning of the week will finally push off towards the north and east with upper ridging gradually building in.
max temps should be 1-2F warmer than today with highs around 80 on the plains and 70s valleys.
Clear skies, light winds, a cool start to the evening and dewpoints in the 30s support a good setup for radiational cooling and the lower edge of the 12 UTC forecast guidance envelope across the west and far south central. Widespread lows in the lower to mid 30s are expected, if not a bit cooler, with widespread frost. Northerly flow aloft continues today, as an upper low maintains its position over southern Ontario. Highs will be cooler today with mid/upper 50s in the Turtle Mountains, while low to mid 60s will occur elsewhere. Overnight lows overall will range the upper 30s from western into most of central ND, with lower 40s James River Valley where enough cloudiness remains in association with the Ontario upper low. The Ontario upper low slowly shifts east Tuesday.
250 PM CDT Mon May 29 2017 Area remains on southwest edge of broad cyclonic flow associated with closed low over Ontario this afternoon.
349 PM CDT Mon May 29 2017 Developing Cu field over the Panhandles as colder H500 temperatures move in out ahead of an upper level perturbation over the high terrain of NM/CO indicate upper level instability for some possible diurnal convection later this afternoon and evening. Latest radar shows convection developing over the high terrain over New Mexico.
352 PM EDT Mon May 29 2017 Forecast remains dominated by an upper low that will continue to wobble around over Ontario and Quebec through the week. A series of troughs will rotate around this low through the Great Lakes presenting several opportunities for increased cloud cover and possibly some precipitation. Aided by the left exit region of a jet streak to our south, decent vorticity lobe expanding outward from the low, enhanced ribbon of theta e, and strong low/mid level lapse rates to utilize around 500 j/kg of elevated CAPE, we should continue to see a scattered coverage of showers and thunderstorms through the evening hours. Lapse rates will still be favorable as cooler airmass slides in aloft, and CAPE could still reach a few hundred J/kg, thus we'll keep the slight chance mention.