Aikyam-Lab/Synoptic-Bench huggingface dataset:
1150 AM MDT Tue Jun 15 2021 Early morning upper level analysis has large ridge across the central CONUS, with deep trof off the West Coast. At the surface, high pressure is located across the the Dakotas with lee trof developing across central Montana and Wyoming. Upper ridge axis will reside across the Northern Plains today. Strong upper low moving across central Canada will flatten the central CONUS ridge, allowing for slightly cooler temperatures on Wednesday. A cold front is expected to push through the region overnight and shift the winds out of the northwest.
Expect another hot day on Wednesday as the upper ridge dominates, however the atmosphere will become drier with PWATs less than 1.
229 PM CDT Tue Jun 15 2021 Cooler and much drier air than what we have seen over the last few weeks have spread across the region.
245 PM EDT Tue Jun 15 2021 Surface cold front will stall off the SE Coast tonight and will remain offshore through mid-week.
Gusty to breezy southwest wind expect south and west of the valley this afternoon, with a cold front sweeping through the area this afternoon and evening. Otherwise, gusty wind will accompany the front, with slightly cooler temperatures expected on Wednesday.
158 PM MDT Tue Jun 15 2021 There is a pretty decent fetch of forest fire smoke riding up the ridge now getting into the northwestern quarter of Colorado. Currently at DIA the temperature is 3 degrees F warmer now then it was yesterday at this same time. There is a Denver cyclone in place again today with southeasterly low level winds over the eastern 2/3rds of the plains. Models show the upper ridge to flatten out somewhat on Wednesday. For temperatures, it may be a tad warmer tonight than last night with the smoke aloft coming.
Tonight and Wednesday Quiet weather and seasonable temperatures are expected tonight and Wednesday as high pressure stays in control of the weather across the western Great Lakes region. High temperatures should be a few degrees warmer than today; ranging from the middle to upper 70s across the north, with highs around 80 across central and east-central Wisconsin.
Some relief from the summertime humidity is on the way thanks to a dry cold front that is currently pushing through the area. There will still be plenty of sunshine, but afternoon highs will peak in the mid to upper 80s -- and with the lower RH values, it may actually feel a degree or two cooler than that. The TN Valley remains wedged between increasing ridging aloft over the Four Corners region and troughing along the Atlantic Coastline.
41 A welcomed quiet pattern change and ridge dominated regime for the short term. Pretty strong NW flow aloft and dry ridging persists for Wednesday and will actually have afternoon highs slightly below to near normal.
The ridge axis has pulled east into the High Plains with a very dry and hot southwest flow across the forecast area. The upper ridge flattens out tonight with a dry westerly flow across the area through Wednesday night. A cold front will push across the area late tonight into Wednesday morning. The biggest beneficiary will be across the Bighorn Basin and Johnson County where highs will be around 15 degrees cooler, while the rest of the area should see highs between 4 and 8 degrees cooler. The upper-level ridge that has been impacting the region will begin to flatten out and become more zonal to start the period.
930 PM EDT Tue Jun 15 2021 Surface cold front will stall off the SE Coast tonight and will remain offshore through mid-week.
Cooler and much drier air than what we have seen over the last few weeks have spread across the region.
The exception is the far east and northeast, where the clouds have been enhanced by some energy rotating around an upper trough.
No major changes to the forecast today as high pressure builds in for the week.
437 PM MDT Tue Jun 15 2021 The ridge axis has pulled east into the High Plains with a very dry and hot southwest flow across the forecast area. The upper ridge flattens out tonight with a dry westerly flow across the area through Wednesday night. A cold front will push across the area late tonight into Wednesday morning. The biggest beneficiary will be across the Bighorn Basin and Johnson County where highs will be around 15 degrees cooler, while the rest of the area should see highs between 4 and 8 degrees cooler. The upper-level ridge that has been impacting the region will begin to flatten out and become more zonal to start the period.
538 PM MDT Tue Jun 15 2021 High pressure persisted over the forecast area today. Regardless, overnight lows will be warmer than in previous days. Very little change indicated on Wednesday as the dome of high pressure will remain directly overhead.
High pressure aloft will build across the area from the four corners region during the last half of the week, bringing triple digit interior heat for the latter portion of this week. An upper trough in the Pacific NW will eject NE tonight. Dry conditions are forecast for the remainder of the week as ridging builds over the western CONUS. Significant warming is forecast for the interior toward the latter portion of the week as an upper ridge over the 4-corners region expands NW over N California.
The last remnants of the persistent upper level trough are moving through the region this afternoon. Elsewhere remains dry this afternoon with cloud cover lingering over the higher terrain. As the upper level trough continues to move out of the region, shower activity will diminish this evening and cloud cover will dissipate.
Amplified upper pattern in place with a hot ridge of high pressure centered over the Four Corners and a strong closed low over Quebec. In between we have deep northerly flow with Canadian high pressure building south from Gitche Gumee. As a result, mild and dry weather will continue through Wednesday, with the only noticeable differences being a cooler start Wednesday morning, and less wind through the day.
830 PM EDT Tue Jun 15 2021 A welcomed quiet pattern change and ridge dominated regime for the short term. Pretty strong NW flow aloft and dry ridging persists for Wednesday and will actually have afternoon highs slightly below to near normal.
Should see conditions similar to last night, occur again tonight with the dry airmass allowing for temps to fall into the middle/upper 50s across the eastern ozarks, to the lower and middle 60s across the western areas.
At this point there is no reason to make change the highlights. Still expecting a cold front, though it will be dry, to move through the area tonight. Expecting temperatures to be 15 to 20 degrees cooler tomorrow.
A dry cold front has pushed through the region, with a notable drop in dewpoints in its wake. In fact, current readings across the Tennessee Valley are in the low to mid 50s, making our current surface temperatures in the mid 80s feel quite comfortable. The end result will be a cooler and much more comfortable night with lows in the upper 50s to lower 60s. Expect more of the same for the rest of the work week as high pressure settles into the area. Thanks to the lower dewpoints and RH values, it will feel fairly pleasant for this time of year.
Isolated showers and thunderstorms are forecast each afternoon, especially over the high terrain. High pressure remains stationary over the Four Corners region this afternoon and looks to remain so through Wednesday.
506 PM EDT Tue Jun 15 2021 A cold front crossing eastern Midlands this afternoon.
Highs both days will approach or break records in several areas, climbing into the mid-90s over the valleys and into the low 100s over the eastern plains. With a decent amount of moisture in place under the ridge, more isolated to scattered storms will also be possible Wednesday afternoon over the mountains, possibly being slightly more widespread than today. Gradual moistening within the upper high will keep isolated high based afternoon and evening thunderstorms in the forecast in and near the mountains each day.
619 PM MDT Tue Jun 15 2021 Latest GOES-W satellite imagery showed the mid/upper level ridge centered over the WY/CO Front Range. The nearest thunderstorm activity was detected over the higher terrain of central and southern CO. A weak front will settle south into east-central WY and northern NE Panhandle Wednesday afternoon, lowering temperatures into the low to mid 90s. Wednesday night will be cooler with lows in the upper 50s and lower 60s.
While hot, the lower humidity will keep heat indices near the air temperature values through tomorrow. This trough will ride along the western periphery of the ridge, flattening it as it moves up into the Canadian Rockies and then translating eastward across the Canadian Prairie.
Breezy conditions with a cold front moving through the area on Wednesday highlights the short term forecast. Low level warm air advection ahead of the low and attendant cold front will keep overnight lows quite mild, in the 60s. The cold front moving through on Wednesday is the main feature of the forecast. Winds will diminish late Wednesday as the front exits and diurnal mixing decreases, with cooler overnight lows in the 50s.
711 PM EDT Tue Jun 15 2021 A cold front will move offshore tonight. High pressure will build across the Southeast U.
610 PM MDT Tue Jun 15 2021 Aviation Section Updated A Pacific cold front will shift winds to westerly for most areas tonight with windy conditions continuing into Wednesday across north- central Montana. Somewhat cooler but mainly dry conditions follow for the rest of the week. Temperatures rose rapidly this morning as the shallow surface layers mixed out to the well established layer of warmer air aloft. The Pacific cold front associated with this system has crossed the northern Rockies and is beginning to press across western portions of North-central Montana. PN Temperatures on Wednesday will be around 15-20 degrees cooler than today thanks to the cold front and suppression of the upper level ridge as the previously mentioned upper trough lifts NE across western Canada.
Northwest flow aloft and large high pressure anchored over Ontario were keeping sunny, dry and warm conditions going over the area this afternoon. Actual temperatures were in the mid to upper 80s west, lower 80s east, which is a bit warmer than anticipated, possibly due to the drying soil conditions. High pressure will remain the dominant influence overnight into Wednesday. The Canadian high will drop south into the western Great Lakes Wednesday as the sharp upper level ridge over the Rockies and Northern Plains begins to flatten and nudge eastward.
Dry conditions are expected to continue through the remainder of the work week with slightly warmer temperatures. No major changes to the forecast today as high pressure builds in for the week.
340 PM MDT Tue Jun 15 2021 Triple digit temperatures are spreading across the region this afternoon under the strongest day of high pressure ridging aloft. The cold front is approaching from the west and it may provide the lift to do so, but most models are not convinced. Even though high temperatures behind the cold front will drop 25 degrees compare to today, the gusty west/northwest winds will remain with only little humidity recovery.
Lows in the low to mid-70s. Also, upper level forcing will shift southward into southern/south- central Florida on Wednesday, as a stronger upper level trough pushes off of the Atlantic Coast, north of the local area. Persistent westerly flow will again keep the highest coverage on the eastern side of the peninsula, with easterly storm motions.
903 PM EDT Tue Jun 15 2021 A cold front will move offshore tonight. High pressure will build across the Southeast U.
Otherwise, VFR conditions expected all sites through the forecast period under strong mid/upper level ridging. /Issued 208 PM CDT Tue Jun 15 2021/ Anomalously strong upper level ridge currently centered over the Four Corners Region will continue to build into the area over the next couple of days, which will maintain hot and dry weather for much of our forecast area through the end of the week.
316 PM MDT Tue Jun 15 2021 High pressure persisted over the forecast area today. Regardless, overnight lows will be warmer than in previous days. Very little change indicated on Wednesday as the dome of high pressure will remain directly overhead.
A strong ridge of high pressure will build over the region through the week.
What has developed is in the transition zone behind the cold front over south MS. Despite being behind the cold front, temperatures have efficiently warmed into the low to mid 90s, and with the dry airmass, will rather quickly fall through the evening settling in the 60s and lower 70s around sunrise Wednesday. Over the northeast, warming will likewise be efficient, but with the starting point in the lower 60s, only upper 80s to around 90 will be achieved.
812 PM EDT Tue Jun 15 2021 Overall pattern has an upper level trough down the eastern US into the Gulf of Mexico while a ridge reaches from the Atlantic west over Cuba to near the Yucatan. At the surface a boundary was through the southeastern states while an Atlantic high pressure ridge axis was south of the Florida Keys.
Dewpoints for our area in the lower/middle 50s are making for a comfortable evening, with morning lows slated to fall once again into the upper 50s to lower 60s. Expect more of the same for the rest of the work week as high pressure settles into the area. Thanks to the lower dewpoints and RH values, it will feel fairly pleasant for this time of year.
511 PM MDT Tue Jun 15 2021 Latest upper air analysis has the upper ridge axis over the western half of the CWA as an upper trough digs into the Pacific Northwest. At the surface, high pressure is located across the the Dakotas with lee trof developing across central Montana and Wyoming. The strong upper low over the Pacific Northwest will move across Canada, flatting the central CONUS ridge, allowing for slightly cooler temperatures on Wednesday.
The upper level trough has lifted to the northeast followed by a dry westerly flow. It will be considerably warmer on Wednesday compared to today due to less cloud cover, but the inverted surface thermal trough will be suppressed to the south which will limit the amount of heat that could occur if it was over the region.
1237 AM EDT Wed Jun 16 2021 A cold front will move offshore tonight. High pressure will build across the Southeast U.
339 AM CDT Wed Jun 16 2021 Breezy conditions today with a cold front moving through the state highlights the short term forecast period. Though somewhat cooler temperatures (low 80s) are expected behind the front, dry air with relative humidity falling to around 20 percent will combine with the northwest winds to create near critical fire weather conditions (current fuel status precluding fire weather headlines). Surface dew points into the low 60s and very steep mid level lapse rates will accompany the front this afternoon in the southeast, however the warm air and capping inversion aloft should keep any chance of convection unlikely.
137 AM EDT Wed Jun 16 2021 A cold front crossing eastern Midlands this afternoon.
Stout deep-layer ridging remains in place across the West. Water vapor imagery and RAP mesoanalysis depict this ridge centered near the Four Corners. Farther east, a longwave trough resides generally across the eastern CONUS. High pressure is now settled from the Great Lakes and extends a subtle presence into the Deep South. Tomorrow afternoon may be a degree or two warmer than today as the ridge out west flattens a bit and height rises nudge into the Southeast.
1143 PM MDT Tue Jun 15 2021 High pressure persisted over the forecast area today. Regardless, overnight lows will be warmer than in previous days. Very little change indicated on Wednesday as the dome of high pressure will remain directly overhead.
A cold front is set to trek into the Permian Basin Mon/Tue reducing temps well below normal.
Frontal boundary that brought showers and thunderstorms yesterday has pushed offshore and is expected to oscillate closer to shore again today ahead of another cold front pushing into the coastal Carolinas from the northwest. Weak high pressure will bring mostly clear skies, although an isolated shower or thunderstorm with the surface frontal boundaries may occur near coastal communities later this afternoon/evening.
343 AM EDT Wed Jun 16 2021 Pleasant weather will prevail today as a high pressure area drifts south across the Upper Great Lakes region. One more cool night is ahead tonight with lows dropping into the lower 50s.
Isolated showers and thunderstorms are forecast each afternoon, especially over the high terrain. More of the same for Wednesday, though with the added moisture cloud cover might keep at least the higher elevations a bit cooler than today. High pressure remains stationary over the Four Corners region this afternoon and looks to remain so through Wednesday.
Latest upper air analysis has the upper ridge axis over the western half of the CWA as an upper trough digs into the Pacific Northwest. At the surface, high pressure is located across the the Dakotas with lee trof developing across central Montana and Wyoming. The strong upper low over the Pacific Northwest will move across Canada, flatting the central CONUS ridge, allowing for slightly cooler temperatures on Wednesday.
237 AM CDT Wed Jun 16 2021 Amplified upper ridge was centered over the four corners region of the U. There is some weak energy on the eastern periphery of the ridge axis, but regional radar looks clear early this morning. Further east, temperatures had dropped into the low 60s.
259 AM CDT Wed Jun 16 2021 Summer conditions will continue to prevail as an intense upper level anticyclone remains centered over the Four Corners.
350 AM EDT Wed Jun 16 2021 Latest analysis shows an upper level low over eastern Canada and an upper level high over the four corners region with ridging into the northern plains. At the surface, a cold front continues to slowly drop south across the area this morning, with high pressure over the upper Great Lakes expected to build in today. Pleasant day on tap with plenty of sunshine as heights rise and high pressure continues to build in from the north.
218 AM CDT Wed Jun 16 2021 More hot and dry weather is on the way for the next few days with large ridge aloft to our west expanding northeast over the central and northern Plains.
319 AM EDT Wed Jun 16 2021 High pressure will build over the area mid to late week. Another cold front will approach the area this weekend.
Surface analysis early this morning shows strong high pressure in place over Lake Superior. extending south through the Ohio Valley toward the lower Mississippi River Valley. highly amplified ridge in place over the northern plains. the models continue to depict the large high pressure system moving ever slowly southward toward Indiana and Illinois. Aloft the sharp ridge is expected to make progress toward the Western Great Lakes. The upper ridge axis is expected to still be intact over the Great Lakes.
This feature continues off to the southeast tonight toward the base of a large upper level trough over the East Coast.
A dry cold front, accompanied by wind gusts to 45 mph and blowing dust, will continue to move through the Upper Treasure Valley southeast of Boise this evening and through the Western Magic Valley by midnight. Temperatures will be a little cooler. A cold front will bring reduced visibility due to blowing dust this evening. Cold front currently near KMUO, moving SE toward KJER KTWF by 05z/Wed. Surface winds: NW 20-30kt along the cold front with gusts up to 40kts, otherwise NW 15-25kt through 08z/Wed, easing to NW 5-15kt thereafter.
1051 PM MDT Tue Jun 15 2021 Latest GOES-W satellite imagery showed the mid/upper level ridge centered over the WY/CO Front Range. The nearest thunderstorm activity was detected over the higher terrain of central and southern CO. A weak front will settle south into east-central WY and northern NE Panhandle Wednesday afternoon, lowering temperatures into the low to mid 90s. Wednesday night will be cooler with lows in the upper 50s and lower 60s.
145 AM CDT Wed Jun 16 2021 Another quiet night across the region with high pressure in control. Under mostly clear skies, temperatures at 1 am ranged from the lower 50s to the lower 60s. High pressure budges east more into the Great Lakes region as mid- level ridge of high pressure builds directly overhead. This will provide another dry and slightly warmer day under ample sunshine.
Lower dewpoints behind last night's cold front passage will make for a pleasantly cool night for mid June, with lows in the mid 50s to lower 60s in most spots. Surface ridging and dry air will result in a mostly clear sky and VFR conditions through the period. JB Chattanooga Airport, TN 86 61 88 64 93 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 82 58 84 61 91 / 0 0 0 0 0 Oak Ridge, TN 82 58 84 60 90 / 0 0 0 0 0 Tri Cities Airport, TN 78 51 81 55 88 / 0 0 0 0 0.
229 AM CDT Wed Jun 16 2021 We were treated to some pretty nice wx Tuesday behind a passing cold front.
Continued dry and cooler weather to continue Wednesday and Wednesday night. Weak CAA with 925-850mb northerly flow will continue cooler than normal temperatures.
Meanwhile, south Florida and the Florida Keys remain on the western periphery of a low level ridge that extends across the western Atlantic. The ridge across the Atlantic will begin to build starting this evening, which will lead to winds freshening and persisting well into the weekend. As the ridge builds, an upper level trough that has been persistent along the eastern Seaboard will lift northeast, effectively ending the large scale lift across the area.
A mid tropospheric ridge remains in place from the southwest US up into Manitoba. There is a trough over the Pacific northwest, and a jetstreak of around 100 knots at 300 mb was associated with that trough. Thermal ridge at 700 mb was quite impressive, with 22 C at Flagstaff and 16 C as far northeast at Glasgow. Highs yesterday were mostly in the lower 90s, with extremes of 89 at Albion to 94 at Omaha Eppley, Millard and Wayne. Expect most areas today to be about 5-9 degrees warmer, biggest changes are expected in the western parts of the forecast area.
237 AM MDT Wed Jun 16 2021 Windy conditions are expected today in wake of yesterday's Pacific cold front, with high temperatures generally ranging from the 70s up north to the low 80s down south.
246 AM EDT Wed Jun 16 2021 An upper trough will linger over the Mid Atlantic region through Wednesday.
With the forecast area locked under the influence of both of these features, hot conditions persist today as temperatures climb into the upper 90s and low 100s thanks to slightly warmer temps around 850-800mb. Overnight temperatures will provide little relief from the heat with lows only falling into the lower 70s.
Four Corners high pressure will dominate the western and central CONUS for the rest of the week and into the middle of the weekend.
222 AM EDT Wed Jun 16 2021 An upper trough will linger over the Mid Atlantic region through Wednesday.
With the passage of a weak cold front, winds will shift to be northerly late tonight into early Wednesday morning area- wide.
235 AM MDT Wed Jun 16 2021 Cold front is currently moving through NE Montana early this morning turning gusty SE winds into gusty NW winds. An upper low will move into Alberta this morning which will push upper ridge to the east. Much cooler temperatures will move into the forecast area today with highs between 75 and 85.
324 AM EDT Wed Jun 16 2021 A potent upper wave moves onshore over the Pacific Northwest early this morning squeezing upper ridging over the central US and displacing it eastward toward the Great Lakes.
(Today and tonight) Highs today will increase a few degrees over yesterday's values as the upper ridge amplifies further to our west and heights rise slightly over the area. With the continued influence of upper ridging and a stagnated airmass, air quality will once again be poor for portions of central OK, where Air Quality Alerts are in effect. Lows tonight will drop off into the low 70s under continued mainly clear skies.
Otherwise, high pressure will build over the area and VFR conditions are expected.