Aikyam-Lab/Synoptic-Bench huggingface dataset:
309 PM MDT Mon Jul 17 2017 Light westerly flow is pushing into the area as a broad high pressure lies over the southern Rockies. Tuesday will be slightly warmer, and drier mainly over the northern half of the forecast area where lower PWs will be moving in.
Otherwise a broad ridge in mid and upper levels remained over the southwest and south central U. At the surface, A low pressure system was seen over the northern plains in an otherwise diffuse pattern. This is expected to keep the boundary layer a little better mixed and keeping lows in the lower and mid 70s. With this in mind, highs are expected to be a degree or two warmer than today.
Hot conditions will be associated with the ridging and heat advisories may be required by the end of the week. Short wave trough moving northeast of the SC coast early this evening. Persistence with temperature forecast expect lows in the low 70s.
331 PM CDT Mon Jul 17 2017 Heat remains the primary concern over the forecast period as the upper-level ridge continues to expand and strengthen across the eastern Plains.
With weak high pressure over the area winds will remain light and the cumulus field that developed across eastern KY will dissipate this evening. There were showers and thunderstorms along the Appalachian chain to our southeast today, and there is a slight chance a few storms could develop along the higher terrain near the VA border on Tuesday, and will continue to carry this in the forecast. The upper level ridge in the center of the country will flatten somewhat but build east into the OH and TN valleys during the latter part of the week.
139 PM EDT Mon Jul 17 2017 No major updates needed as high pressure remains over the area. quiet and a bit warmer today. Large area of strong high pressure producing clear skies. High pressure will remain centered over the Great Lakes region today and most of tonight. Temps will moderate today as the core of the cooler air slides east of our region.
However a brief window of opportunity for thunderstorms north of the highway 96 corridor exists beginning mid evening. The combination of mid upper 60s surface dew points and highs around 100 degrees or warmer across central Kansas may lead to heat advisory criteria being met. Marginal LLWS shear should also develop in the lowest 2000 ft during the early morning hours.
540 PM EDT Mon Jul 17 2017 A trough of low pressure will dissipate as it moves in from the west tonight.
Convective temps are in the mid 80's and SE TX lies on the east side of a weak inverted upper trough. There are indications that a low pressure center will begin to form over the Central Plains later in the week, which would tighten the pressure gradient and slightly nudge wind speeds up.
134 PM MDT Mon Jul 17 2017 Cold front laying along a line from Rapid City to Wright to Cody this afternoon. Southeast surface winds out across western Nebraska, northeastern Colorado and northwestern Kansas this afternoon with dewpoint temperatures in the low 60s.
At the surface, low is centered over north central South Dakota with trailing cold front extending through southwest SD into the NEB panhandle. Cold front will hang up across far southwest SD and the Blkhls on Tuesday and will be the focus for afternoon/evening storm development. Things should remain fairly capped on the SD plains given cooler easterly low level flow and subsidence behind tonights short wave. Temps will be noticeably cooler across much of the area with readings struggling to get out of the 80s. A bit cooler for Tuesday with easterly winds and higher relative humidities.
This will be the pattern for much of the week into the weekend, as the region remains under high pressure.
Cold front is completing its passage across the region. Also continued with chance pops in the ridges tomorrow afternoon, but decided to cut back on amount of area with chance pops considering how meager coverage has been today. Higher 500mb heights will creep into the region, with warmer air continuing to move into the area.
243 PM EDT Mon Jul 17 2017 A trough of low pressure will dissipate as it moves in from the west tonight.
1205 PM CDT Mon Jul 17 2017 Upper ridging remains over the Plains into the mid and upper Mississippi Valley. While the bulk of the showers and storms will stay north of the forecast area this evening, can't rule out a few stray showers or storms along the upper trough for areas along and north of I-70. A weak disturbance aloft rotating northeast around the upper ridge will graze north central Kansas thru tonight, possibly supporting isolated convection along and north of the I-70 corridor.
A deep tropospheric ridge will be aligned across the Florida peninsula and the adjacent Atlantic and Gulf waters. Little change in the overall pattern as a low and mid level ridge will remain anchored across the Sunshine State. Being on the southern periphery of the ridge, a few minor undulations accompanied by higher moisture may cross our region.
349 PM MDT Mon Jul 17 2017 An upper level trough over the northern Rockies will continue to suppress the ridge today. Another area of low pressure will spin off the main trough later today and then intensify Tuesday off the Pacific Northwest coast. This trough amplifies and helps push the ridge axis to the east opening the gates for a tap to subtropical moisture. The ridge axis center continues to slide slightly east setting up over KS and OK. The ridge becomes less elongated and more compact.
1127 AM MDT Mon Jul 17 2017 An upper level low pressure area that has been over the area the past few days is forecast to lift northeast toward McCook by 18z then across the far northeast and east by days end and finally out of the area by sunrise Tuesday morning. Plenty of moisture exists in the vicinity of the low which will help promote shower and thunderstorm activity, some of which will produce locally heavy rainfall. For Tuesday and Tuesday night weather disturbances will graze the far northern zones around periphery of upper ridge continuing a low chance for thunderstorms.
The big upper ridge will be trying to build into the forecast area during the short term however, a weak upper trough will be gradually exiting through the Eastern Seaboard. Lows tonight should be near normal ranging from the middle 60s north to the lower 70s across the extreme south. A slow moving trough will be located along the Carolina coast early in the period with a ridge established across the Central U. This ridge will expand eastward throughout the week. Wednesdays forecast will feature a few isolated to scattered showers in the higher elevations along the TN/NC line with high temperatures in the upper 80s to low 90s across most valley locations.
135 PM EDT Mon Jul 17 2017 High pressure aloft brings increasingly hot and humid pattern with scattered showers/storms through mid week.
At the same time, a cold front extending along the Northern Plains/Central Dakotas will approach the area early this evening; bringing isolated/spotty thunderstorms along and ahead of the front. The exception will be along the Missouri Valley, where highs could reach the lower 90s. General pattern puts our CWA on the north side of a flat ridge with several waves rounding the ridge.
1203 PM MDT Mon Jul 17 2017 GOES-16 water vapor loop showed the upper ridge axis extended from north of Lake Superior southwestward across the central Great Plains and Southwest CONUS. A cold front reached from northwest ND through southern MT and ID, and northern NV. The short range models and ensembles are consistent with the gradual east-southeast shift of the upper ridge, with its center over the south central Great Plains by mid-week. The front to the northwest weakens as it progresses southeast into the high plains this afternoon. With CAPEs near 2000 j/kg and 0-6km shear values of 30 kt late this afternoon and early evening over the high plains, isolated strong to marginally severe t-storms will be possible.
High pressure in the mid levels remains centered over far northern Arizona and the four corners today. Easterly steering flow around the high pressure will move storms from east to west through the evening. Large scale high pressure slowly moves east through the middle of the week, gradually shifting our steering flow from easterly to southerly.
Narrow and slow lifting upper trough will remain down the east coast into the deep south with energy wrapping through the N Gulf Coast while another area of upper energy over Cuba will lifts over the South and Central FL Peninsula through Tuesday. An upper level trough down the eastern seaboard shifts offshore and dampens out by the end of the week. allowing weak upper level ridging to build in across the region. At the surface broad and relaxed Atlantic high pressure extends into most of the Gulf of Mexico with an axis initially across southern FL. as the upper trough moves out over the Atlantic and the upper ridging builds in. Weak Bermuda high pressure will continue to dominate the marine weather through the week for light winds and slight seas.
237 PM CDT Mon Jul 17 2017 Little change to the going forecast this afternoon, with temperatures still expected to top out in the low to mid 90s.
Weak upper level troughing will continue across the region overnight into Tuesday with convection moving to the east coast and diminishing this evening. With the upper trough hanging over the region tonight will see some mid to high level convective debris cloudiness hanging in through the overnight hours and a very slight chance of showers especially over southeast Georgia overnight. Low temperatures will be in the lower to mid 70s and high temperatures on Tuesday will be in the mid 90s.
A ridge of high pressure will remain in place across the region through mid week, resulting in continued hot temperatures.
607 PM EDT Mon Jul 17 2017 High pressure will build east through the central and southern Great Lakes through Tuesday night.
1200 PM MDT Mon Jul 17 2017 Current surface map shows cold front creeping through western South Dakota. For today, cold front makes it into central South Dakota this afternoon. Front will be stalled out in northern Nebraska Tuesday afternoon as weak high pressure slides through the Dakotas. Area will be under flat upper ridge through the remainder of the week. GFS/ECMWF then amplify ridge over the Rockies over the weekend with digging trof over the Great Lakes. Forecast area will be on western edge of northwest flow, allowing for slight cooler temperatures with back door fronts.
These storms will continue to push east, with additional chances coming this afternoon as the cold front pushes in. A cold front will continue to push south and east across the area today while a rigorous H5 wave passes overhead resulting in height falls. The mean H5 ridge over the area flattens to a fast quasi-zonal flow for this week. Aided by a long wave trough over Alberta, into southern Saskatchewan, a series of waves keep chances for thunderstorms in the forecast most days through the long range period.
113 PM EDT Mon Jul 17 2017 A weak cold front will move south of the area by late this morning.
Mid level trough over the southeast states will keep subtropical ridge suppressed to our south, which will provide a deep layer of moist southerly winds.
103 PM EDT Mon Jul 17 2017 A weak cold front will gradually dissipate today.
Once any lingering clouds diminish, Friday should be mostly sunny with slightly cooler (though still quite seasonable) conditions.
Dry and cooler air mass reinforcement without much change in the diurnal temperature/moisture curve through Friday. Mainly clear with increasing cirrus riding atop this flattened near-zonal 5H ridge flow pattern.
Some high cirrus should begin to move across most sites early Friday morning as the weak cold front (currently north of the region) continues to sag southward into SE TX. Dry and cooler air mass reinforcement without much change in the diurnal temperature/moisture curve through Friday. Mainly clear with increasing cirrus riding atop this flattened near-zonal 5H ridge flow pattern.
125 PM MST Thu Nov 30 2017 20z surface analysis had high pressure over the southern plains with a lee trough from central MT into southeast WY, which is in response to return flow on back side of high and weak warm air advection.
Cold front, now knocking on our door near Land Between the Lakes, and will continue to push eastward for the remainder of the day, and shove a band of scattered showers out ahead of it. Still looks like most high temperatures today will be in the lower and middle 60s. The high resolution models indicate scattered showers this afternoon so will go with a VCSH for the afternoon hours through 02Z.
333 PM CST Thu Nov 30 2017 A feeble cold front, located near I-65 at 3 pm, was continuing to limp steadily eastward this afternoon.
Some clouds are moving ahead of a weak trough over the SW CONUS which may bring slightly warmer overnight lows compared to yesterday, but not by much. With southwesterly flow returning on Friday, temperatures will warm up to some areas in the western TX Panhandle reaching the lower 70s, well above average. Another weak cold front will make its way into northern areas bringing slightly cooler temperatures back into the lower and mid 60s.
1024 AM MST Thu Nov 30 2017 An upper level low stalled offshore the southern CA/Baja coast through Friday night will de-amplify as it becomes progressive and tracks east across the Desert SW Sat/Sat night.
A very weak and dissipating cold front is moving into South Texas today, but virtually no impacts are expected besides continuing northeast flow behind it. Rainfall is not expected through the short term period with above- normal temperatures forecast for Friday with highs in the low to mid 80s for most areas.
148 PM EST Thu Nov 30 2017 A weak cold front will move into the area tonight.
217 PM CST Thu Nov 30 2017 Weak ridging over the west with cutoff closed low off Baja. Closed low over the Gulf of Alaska. Am concerned about the return of southerly flow which may prove to warm temperatures warmer than what is suggested. GFS slower and deeper with the trough and ECMWF is more progressive. Friday night front continues to move south across Kansas with clearing skies winds becoming southerly after midnight and temperatures in the low 20s.
257 PM CST Thu Nov 30 2017 Low amplitude upper ridge extended from the Pacific Northwest into the Northern Plains. Ridge axis will move the area Fri morning. Low amplitude trough will move through the area Fri afternoon. Zonal flow over the northern tier will transition to SW flow by the end of the weekend as an omega ridge amplifies over the west coast of Canada.
100 PM CST Thu Nov 30 2017 Today will be sunny and a little breezy as high pressure builds into the region. A cold front moved across the Upper Midwest last night and led to a brief period of gusty winds. Overnight lows could be a bit cooler in the typical cold spots of eastern Mn and western WI, depending on the timing of the southwesterly winds.
mornings dipping into the upper 40s to middle 50s and afternoons warming into the lower to middle 70s.
328 PM EST Thu Nov 30 2017 High pressure persists along the Eastern Seaboard and also over the Great Plains, in between, a weak front has dipped through the Ohio River Valley. The mean layered ridge is centered over Mexico and maintains dry northwesterly flow in the mid-levels. The warmer water temperatures have been able to modify SFC parcels just enough to create convective cells across the Straits.
Occasionally gusty west-northwest winds behind this morning's cold front will ease late this afternoon and even more tonight as high pressure across the plains expands across the southern Great Lakes. The high will shift east of the area Friday afternoon, allowing generally light southwest winds to develop. KMD 251 AM CST High pressure expected to be in place Friday, but then slide to the east by the start of the weekend.
1202 PM EST Thu Nov 30 2017 A cold front will bring showers to the area this afternoon and evening.
312 PM CST Thu Nov 30 2017 An area of high pressure is moving across the Central Plains today allowing for mostly sunny skies across the area that will persist throughout the next few days. The high will continue to move through the area tonight and exit to the east on Friday morning.
233 PM EST Thu Nov 30 2017 A cold front will bring showers to the area this afternoon and evening. A cold front is currently crossing the region, bringing showers to all locations. Nearly all rain should have exited the forecast area by midnight, although an isolated shower might remain in the ridges. Temperatures should remain warm enough this evening that all precipitation will fall as rain, although overnight temperatures will drop near freezing in most locations. Sunshine will return to the region on Friday, but with much cooler temperatures and highs only reaching the 40s. High pressure will settle into the region for the weekend, with near seasonal temperatures expected and dry conditions.
318 PM CST Thu Nov 30 2017 Another mild and sunny day! Temperatures have exceeded expectations again with readings ranging from the low 40s to low 50s. Dew points aren't dry enough to allow temps to plummet, but we should be cooler than last night given the good radiational cooling setup in place.
1209 PM EST Thu Nov 30 2017 A cold front arriving from the west will bring clouds and showers today.
1121 AM CST Thu Nov 30 2017 Expect near seasonal normals for temps and dry weather for the next few days as a ridge of high pressure moves rapidly across the plains. Zonal mid level flow will keep things moving along, with the ridge moving rapidly east of the area by early Fri.
302 PM EST Thu Nov 30 2017 Cold front with light showers Thursday night. High pressure for the weekend.
If a little more in the way of high clouds and wind occur, temperatures will be a bit warmer.
145 PM PST Thu Nov 30 2017 High clouds today ahead of a weak trough off the California coast will drift south into Northern Baja Friday.
Current temperatures are running anywhere fro m6 to 10 degrees behind yesterday at this time, and wind speeds in the high country are certainly much lighter. Drier and somewhat warmer air aloft moving over Colorado today while southerly flow redevelops across the plains. This will allow most of the plains to get warmer than yesterday, while areas near the foothills that were so warm yesterday should be a little cooler. Southerly flow should develop a Denver cyclone this morning with lighter northerly winds near the foothills, which will also hold back temperatures there just a little.
312 PM CST Thu Nov 30 2017 High pressure is building into the center of the country this afternoon, with an upper trough moving through the Great Lakes and ridging along the northern Atlantic coast. A cold front associated with the upper level trough has moved through IL last night and this morning. In the wake of the boundary, cooler temperatures and northwesterly winds dominate. The clear skies behind the front will continue through the overnight hours as the high pressure ridge axis drifts eastward.
A cold front extends from central Missouri into central Arkansas, and it will sweep swiftly and surely across the FA this morning. Then, the High shifts to the east for the weekend, and we'll moderate some to a seasonally mild wx weekend heading into the first part of December.
This coupled with a upper level trough axis will continue to see showers develop across central and eastern Kentucky this afternoon and evening. These showers and the cold front will progress through and out of the area tonight. Then high pressure will build east in the wake of this front and this will be coupled with deep layer of dry air. This high pressure will continue to build, as we round out the short term period.
1151 AM CST Thu Nov 30 2017 High pressure over the western high plains at 08Z will build east through the day bringing considerable sunshine and another day of above normal temperatures to the region.
313 PM CST Thu Nov 30 2017 High pressure lumbered slowly east this afternoon across the central CONUS. Dry air associated with this high pressure made the temperatures feel slightly cooler. This high pressure and minima of moisture serve as the forecast focus for the short term. GFS has much warmer temps than any of the other guidance. As a result have lowered the lows tonight to try and eliminate the bias of the GFS.
248 PM EST Thu Nov 30 2017 A moisture-starved dry cold front will approach from the the west today and will move through the region overnight. High pressure will build in behind the front and will dominate through the weekend. As suspected, models have trended drier and drier with the moisture- starved cold frontal passage this evening and overnight, choked off by an overwhelming westerly downslope component east of the mountains. The approach of the cold front into the southern Appalachians will result in increasing Cloud cover will increase from to east during the evening hours. In the wake of the exiting cold front Friday morning, high pressure will gradually build into the area from the NNE Friday and Friday night.
304 PM EST Thu Nov 30 2017 A dry cold front that will cross the area late tonight.
1157 AM CST Thu Nov 30 2017 The secondary cold front moved through the state this morning. High pressure is building into the area and northwest winds are increasing. Mvfr stratus deck will affect the area into the morning hours, but should scatter out as a remnant frontal boundary moves east of the state, and high pressure pushes in. However, it will scatter out after sunrise, as high pressure moves in and the gradient increases. Cooler air will move into the region as well, but it's not a significant cooldown just yet, given zonal flow aloft. Not only that, the high will move through fairly quickly, with winds gaining more of a southerly component by late Friday.
256 PM CST Thu Nov 30 2017 A weak cold front has cleared most of the Midsouth with temperatures ranging from near 60 in Paris, TN to the low 70s in north MS.
305 PM EST Thu Nov 30 2017 A weak cold front has crossed through southern IN today and will continue to move through central KY over the next few hours. Lows tonight and tomorrow night will drop into the 30s with highs tomorrow topping out in the lower to mid 50s. High pressure will remain in place across the region through the weekend. Ridging will build in aloft.
1236 PM CST Thu Nov 30 2017 A cold front extending from near Quincy to Columbia will continue to push southeast this morning. Short range guidance has the low level trof and moisture convergence ahead of it sweeping out of the forecast area by 12-13Z. GOES-16 imagery is showing the low level cloudiness moving out behind the front. although high level clouds are streaming in from the west on a plume of moisture ahead of the upper level trof.
311 PM CST Thu Nov 30 2017 A surface cold front extended from northern Louisiana into north- central Mississippi and was entering into the far northwest corner of Alabama at this hour.
115 PM EST Thu Nov 30 2017 A moisture-starved dry cold front will approach from the the west today and will move through the region overnight. High pressure will build in behind the front and will dominate through the weekend. Highs in the lower 60s NW to upper 60s SE. As suspected, models have trended drier and drier with the moisture- starved cold frontal passage this evening and overnight, choked off by an overwhelming westerly downslope component east of the mountains. The approach of the cold front into the southern Appalachians will result in increasing Cloud cover will increase from to east during the evening hours. The high will extend down the eastern seaboard Friday night.
301 PM EST Thu Nov 30 2017 A weak cold front will push east through the region tonight accompanied by some light rain and snow. High pressure and drier air follows Friday into the upcoming weekend.