Aikyam-Lab/Synoptic-Bench huggingface dataset:
235 PM CDT SAT MAY 28 2016 Latest water vapor imagery shows an upper level low shifting to the north-northeast across the Great Plains, while Tropical Depression 2 makes its way towards the South Carolina coast. In between these two low pressure systems, a convergence axis was located parallel and just east of I-65 over the TN Valley. Meanwhile, extensive dense cirrus was holding across the forecast area, keeping our temperatures several degrees cooler than those yesterday. Meanwhile, the axis of the upper trough will flatten, leaving zonal flow over the forecast area on Sunday.
the weak trough crossing the forecast area this afternoon will shift east and be followed by ridging/anticyclonic flow and slightly drier air going through the remainder of this Memorial Day weekend. There may be an uptick in diurnal convective precip chances over western portions of the ArkLaMiss Memorial Day due to effects from a weak trough moving across the Ozark region.
339 PM CDT SAT MAY 28 2016 The upper trough has finally lifted northeast into IA and southern MN this afternoon. There may be enough weak ascent and residual moisture on the southwest extent of the H5 trough axis for some isolated showers or thunderstorms along the NE border across northeast KS late this afternoon. As the lee trough deepens, southerly surface winds will gradually increase to 10 to 20 MPH during the afternoon hours. Highs on Sunday will warm into the lower to mid 80s. This advancing wave will help to lift the frontal boundary currently draped across Oklahoma northward as a warm front into central Kansas.
A visual look at the clouds shows there is not much vertical development so far, most likely due to the presence of an upper ridge axis directly overhead. Tomorrow storm chances increase as the ridge axis shifts east and a favorably timed disturbance arrives during the afternoon.
High pressure is centered near Bermuda and extends west into the Southeastern United States. Tropical Depression Two is approaching the South Carolina coast and has eroded the ridge across the Bahamas and the Florida peninsula.
an upper level low was over British Columbia with a trough extending southeastward into Montana. Meanwhile another weaker upper level low was over the Red River Valley from Sioux Falls to near Fargo. A line of scattered showers and thunderstorms was associated with this feature, which was moving westward very slowly or was stationary as the upper low lifts north/northeastward tonight. and a mid level ridge moves east across North Dakota through Sunday.
328 AM CDT SUN AUG 7 2016 Latest surface analysis indicates high pressure over northern Minnesota and is expected to dominate our weather for the next several days. This boundary will not move much the next couple of days as the high to our north will be very slow to move out of the Great Lakes region. Forecast soundings continue to show quite a bit of dry air in the low and mid levels of the atmosphere this afternoon so the dry forecast will continue in our area into this evening.
03Z surface analysis would suggest the cold front is bisecting the far SE, but the KY mesonet obs would suggest north winds areawide.
132 AM EDT Sun Aug 7 2016 A cold front continues to advance across the North Country which is triggering a few isolated showers mainly across Vermont this afternoon. Then cooler and more pleasant temperatures and humidities will return this evening and through the rest of the weekend.
354 AM CDT SUN AUG 7 2016 06Z surface data has high pressure over the upper Midwest with a frontal boundary from the Tennessee Valley into the southern Plains. In the large scale beginning on Monday, an upper level trough will move onto the west coast Monday, which will be the factor in building the ridge back in over the plains and midwest through mid-week.
320 AM EDT Sun Aug 7 2016 A cold front continues to advance across the North Country which is triggering a few isolated showers mainly across Vermont this afternoon. Then cooler and more pleasant temperatures and humidities will return this evening and through the rest of the weekend. Infrared satellite shows some low to mid- level moisture tied to the thermal trough associated with upper low to our northwest. Overall just a minor change in the grand scheme of things, as most will see tonight as being a departure from the warm past couple nights and a return to more cooler and comfortable overnight conditions. Quiet weather is expected with high pressure providing clear to partly cloudy skies and nil pops.
352 AM CDT SUN AUG 7 2016 (Today and Tonight) The upper level high over Texas will remain in place today and tonight. With the low-level thermal ridge building into our area a bit from the west and northwest, highs today should be slightly hotter than yesterday and close to what the GFS MOS is indicating.
Similar synoptic setup as yesterday, however we see a short wave lifting out of the trough along the Pacific coast. At the surface, a cold front will couple with the energy from the lifting short wave and will favor thunderstorms mainly over the mountains.
432 AM EDT SUN AUG 7 2016 An upper level trough will move through Eastern Canada today.
With the onset of early convection and also slightly cooler temperatures, heat indices will be a little cooler than yesterday, ranging from around 100 to 105 degrees.
IPW sensors have already shown a decrease in precipitable water values in the last 6 hours over the higher terrain. As for tstm chances still expect to see wdly sct to sct activity over the higher terrain with the best focus along and south of I-70. Over the higher terrain activity should end by early evening.
Elsewhere, quiet conditions exist with temperatures generally in the lower to mid 60s across the region. the upper pattern will feature high pressure aloft over the Central Plains while an area of low pressure sits over the Pacific Northwest. Decreasing Thunderstorm Activity Early in the Week then Upper level high pressure will build in over the region early in the week, decreasing the level of thunderstorm activity over the region.
637 AM EDT SUN AUG 7 2016 High pressure will maintain dry conditions through the early part of this week.
1228 AM CDT SUN AUG 7 2016 214 PM CDT Late this afternoon: High pressure centered across the Upper Midwest stretching south through the Central Plains, which is allowing a light gradient over Northern Illinois and Northwest Indiana this afternoon. Closer to the Lake temperatures will remain a few degrees warmer in the middle/upper 60s. Sunday: High pressure continues to influence the region, which will allow a light and variable surface wind once again to start the day.
Broad troughing is in place across the Great Lakes and through new England, with ridging through the central U.
MAV temps generally look to be a bit on the low side for max temps today.
Convection should become focused across the Devils Lake Basin prior to sunrise as the low level jet veers. Sunday appears dry with North Dakota in the dry sector and a warm front well to the north.
Wave will slowly shift east today as large-scale troughing remains over the region into mid-week.
Another round of lightning strikes will continue to move into Modoc County overnight but thunderstorms are expected to be out of our forecast area by morning as the short wave trough moves east. The low pressure will move into NW Washington today with westerly flow into Oregon and northern California. Normal high temperatures for August 7th: Roseburg: 86 Medford: 92 Klamath Falls: 85 Alturas: 89 Montague: 92 Mount Shasta: 87 North Bend: 65 This pattern continues into Monday as with the low to the north over Washington.
Warmer weather will return later in the week as a ridge of high pressure builds over the district. Little change is expected in the overall pattern during the next 72 hours while an upper level low remains centered over the Pacific Northwest.
WV imagery shows the subtropical ridge centered over Texas, where it has resided the past few days.
The overall synoptic weather pattern which will dominate the region over the next several days has taken shape with a stalled upper-level low pressure center over the Puget Sound area, and downstream southwest flow aloft pushing moisture through the northern Rockies and adjacent northern high plains regions.
447 AM MDT SUN AUG 7 2016 Widespread fog and/or low stratus has developed across much of the high plains early this morning. We should start to see some sun by early afternoon, so expect a slightly warmer afternoon for much of the area with H7 temperatures averaging around +14 C.
234 AM MDT SUN AUG 7 2016 Widespread fog and/or low stratus has developed across much of the high plains early this morning. We should start to see some sun by early afternoon, so expect a slightly warmer afternoon for much of the area with H7 temperatures averaging around +14 C.
An upper low will bring showers the next few days. Dry and warmer weather will develop midweek as high pressure moves over the area. An upper low just off the coast will slowly shift onshore and then inland over the next few days.
139 AM EDT SUN AUG 7 2016 High pressure will bring cooler and much less humid conditions this weekend.
Otherwise, 500 mb high pressure will dominate over Deep South Texas and the Rio Grande Valley during the forecast period.
Seasonally cool temperatures are anticipated this week as low pressure dominates the weather pattern for much of the upcoming week.
351 AM CDT SUN AUG 7 2016 Mid level trough axis this morning is moving eastward over the central plains with mostly zonal flow over the eastern CONUS and an additional upper trough rotating across the Pac NW. In terms of temperatures today, believe the lingering light rainfall with the dense cloud cover will keep highs a few degrees cooler than previous forecast. Readings in the lower to middle 70s are common with light easterly winds at the sfc up to 10 mph. Clouds will also linger into a good part of the day and have kept temperatures on the cooler side accordingly, although it should be noted that a more widespread cloud shield and/or slower departing precipitation would be cause for further reduction in daytime highs.
In the middle and upper levels (700-200 mb), Latest IR imager overlaid with model streamline analysis as of 300 am depict deep warm core east to west oriented middle and upper anticyclone centered over Central MS/AL. To the southeast of that feature, a TUTT (Tropical Upper Tropospheric Trough) cell is centered over the Central Bahamas and still migrating slowly westward towards the Florida Peninsula. At the surface and in the lower to middle levels(Surface to 700 mb), latest available IR imagery as of 300 am overlaid with both available marine and land observations and analysis detail weak trough of low pressure over the NE Gulf of Mexico. South of that, weak and broad surface ridging extends from the SE Gulf of Mexico to across South Florida thence to near Buoy 41049 in the West Central Atlantic at about 27.
252 AM CDT SUN AUG 7 2016 Quiet northwest flow continues over region with fairly stagnant pattern - closed low off Washington coast and mean upper trough across far northeastern U. Continued idea of far cooler in bogs of central Wisconsin compared to most areas.
134 AM EDT Sun Aug 7 2016 A cold front continues to advance across the North Country which is triggering a few isolated showers mainly across Vermont this afternoon. Then cooler and more pleasant temperatures and humidities will return this evening and through the rest of the weekend. Infrared satellite shows some low to mid- level moisture tied to the thermal trough associated with upper low to our northwest. Overall just a minor change in the grand scheme of things, as most will see tonight as being a departure from the warm past couple nights and a return to more cooler and comfortable overnight conditions.
321 AM EDT SUN AUG 7 2016 00Z raobs/latest wv imagery and RAP analysis show a confluent NW flow aloft into the upr Great Lks btwn deep upr trof centered over Quebec and an upr rdg axis stretching fm the Plains into Alberta. Expect the lowest min temps falling into the 40s over the interior E, where winds wl be lightest closer to the core of the driest air/pwat near 0. Light winds less than 10 knots and VFR conditions are to continue through the forecast period at all three TAF sites as high pressure settles over the area.
324 AM EDT SUN AUG 7 2016 00Z raobs/latest wv imagery and RAP analysis show a confluent NW flow aloft into the upr Great Lks btwn deep upr trof centered over Quebec and an upr rdg axis stretching fm the Plains into Alberta. Expect the lowest min temps falling into the 40s over the interior E, where winds wl be lightest closer to the core of the driest air/pwat near 0.
Seasonally cool temperatures are anticipated this week as low pressure dominates the weather pattern for much of the upcoming week. The long wave pattern continues to be dominated by a low pressure in the PacNW and a broad trough over CA.
129 AM EDT SUN AUG 7 2016 High pressure will slowly build into the region for the remainder of the weekend and into the early part of the work week. Cold front has made it to the Kentucky/Tennessee border this evening. Post-frontal air mass across the Ohio Valley is drier, with dewpoints in the lower to mid 60s across much of the CWA. Strong ridging to build into the Great Lakes region.
1035 PM PDT Sat Aug 6 2016 A deep and slow moving low pressure system will move into the area over the next few days. This low will bring cooler temperatures and the threat of showers and thunderstorms.
251 AM MDT SUN AUG 7 2016 Current surface analysis shows low pressure over north central WY, with lee trof stretching from central MT to southwest WY. Upper level analysis shows flattening ridge over the plains with southwest flow across the Rockies, ahead of upper low remaining nearly stationary along the pacific nw coast. Chances for thunderstorms will gradually increase from west to east across the area over the next couple of days as upper low begins to move east across the pacific nw. Southwesterly flow aloft will spread east across the area behind exiting ridge, with embedded disturbances crossing the northern Rockies and northern high plains. More sun and some warmer air aloft will result in highs in the 80s across the plains, warmest over northeast WY, with 70s over the higher Black Hills.
On the plus side, ample cloud cover and widespread precipitation activity will keep temperatures on the cooler side, and finally closer to or slightly below normal high temperatures through the week. Evolution of the low in the northeast Gulf will be the main focus.
Synoptic pattern over the US CONUS features a broad mid to upper level ridge centered over Texas with a cut-off low over the eastern Gulf of Mexico. The ridge over Texas will continue to suppress much of the rain activity minus only a few isolated showers across the coastal plains today and tomorrow. The vertical compression and slightly warmer 925mb temperatures will allow for higher surface temperatures today than yesterday.
125 AM EDT SUN AUG 7 2016 Dry weather is expected under high pressure through early in the week. Dry weather is expected under building high pressure. High pressure should maintain the dry and less humid conditions through Monday as temperatures begin to increase slightly.
520 AM EDT SUN AUG 7 2016 Dry weather is expected under high pressure through early in the week before warm, humid and unsettled weather returns by mid week. Otherwise, the trough is progged to dissipate as high pressure builds in, rusulting in dry weather.
Northern Arizona is currently positioned between an upper level ridge over the central United States and a West Coast trough.
300 AM EDT SUN AUG 7 2016 Dry weather is expected under high pressure through early in the week before warm, humid and unsettled weather returns by mid week. Dry weather is expected today under building high pressure.
523 AM EDT SUN AUG 7 2016 Dry weather is expected under high pressure through early in the week before warm, humid and unsettled weather returns by mid week. Otherwise, the trough is progged to dissipate as high pressure builds in, resulting in dry weather.
319 AM CDT SUN AUG 7 2016 The upper level ridge will continue to largely control the weather this week but a front looks probable by the weekend. Hot and humid conditions will continue for the next few days across much of North and Central Texas with highs from 98-104 degrees and overnight lows in the mid to upper 70s in most places, but in the low 80s in the urban areas of the DFW Metroplex.
The pressure gradient will be on the increase across western and central SD Sunday afternoon, in between this exiting high and nearing area of low pressure stretching from central MT to WY. The apex of the 500MB ridge will slide just to our east Monday morning, with southwesterly flow continuing into Monday night.
1246 AM CDT SUN AUG 7 2016 Aloft: A subtropical high was over TX with a ridge extending NNW to MT. Trofs were over the Wrn and NE USA/Ern Canada. This high will slide SE out of Canada into MN tonight and the Great Lakes tomorrow. The low- lvl jet should maintain or even expand tstm coverage. Aloft: The trof over Ern Canada/NE USA is fcst to lift out. allowing the ridge shift E. The W coast trof will gradually drift inland. The trof will deamplify Thu. the mean ridge will relocate to the Wrn USA with NW flow developing by Sat. The front should surge S and cross the fcst area Thu as the low heads E. Then turning a little cooler than normal behind the cool front Thu.
Think the 70s are generally on track, but trended slightly warmer, a degree or two with mid 70s most places.
High A broad area of high pressure will move across the Great Lakes into Monday.
323 AM CDT SUN AUG 7 2016 214 PM CDT Late this afternoon: High pressure centered across the Upper Midwest stretching south through the Central Plains, which is allowing a light gradient over Northern Illinois and Northwest Indiana this afternoon. Closer to the Lake temperatures will remain a few degrees warmer in the middle/upper 60s. Sunday: High pressure continues to influence the region, which will allow a light and variable surface wind once again to start the day.
549 AM CDT SUN AUG 7 2016 Latest surface analysis indicates high pressure over northern Minnesota and is expected to dominate our weather for the next several days. This boundary will not move much the next couple of days as the high to our north will be very slow to move out of the Great Lakes region. Forecast soundings continue to show quite a bit of dry air in the low and mid levels of the atmosphere this afternoon so the dry forecast will continue in our area into this evening.
630 AM EDT SUN AUG 7 2016 High pressure will extend across the region for the early part of the week. High pressure centered over the upper Mississippi Valley will continue to extend southeast across the region. High pressure will persist through Monday keeping relatively lower dew points across the region.
335 AM EDT SUN AUG 7 2016 High pressure will maintain dry conditions through the early part of this week.
354 AM EDT SUN AUG 7 2016 High pressure will extend across the region for the early part of the week. High pressure centered over the upper Mississippi Valley will continue to extend southeast across the region. High pressure will persist through Monday keeping relatively lower dew points across the region.
127 AM EDT SUN AUG 7 2016 An upper level trough will move through Eastern Canada on Sunday.
High pressure over the upper midwest will build southeast into the great lakes bringing slightly cooler and less humid weather through Monday.
The frontal boundary is roughly along a JCT-T82-HYI-GYB line and has moved north this afternoon, so we'll call it a warm front.
137 PM CST Sat Jan 14 2017 Upper low over Baja this morning will swing east today.
Sunday night, upper low over the southwest will eject into the southern plains with precipitation shield reaching north into south central SD.
Generally dry and cold conditions will continue under low amplitude ridging. Very weak impulses riding over the ridge could squeeze out a few flurries. will retain patchy to areas of freezing fog. High temperatures today will range from the lower teens across the lower elevations and some higher mountain valley locations.
1255 PM CST Sat Jan 14 2017 Temps ahead of area of light shwrs moving presently into NW portions of mid state have soared into the low to mid 60s, several degrees about consensus model guidance. Temp trends support afternoon high temps at CKV/CSV, but are showing temps at BNA and surrounding areas might be a little cooler. With wide swath of moisture expected to persist across the mid state region thru 15/18Z around periphery of upper level ridging dynamics to our S, deteriorating flying conditions at terminals least thru 15/15Z expected.
Another round of dense freezing fog looks likely for Sunday morning.
308 PM EST Sat Jan 14 2017 High pressure shifts east and weakens through today, allowing a weak cold front to move through the area early Sunday.
328 PM EST Sat Jan 14 2017 a trough of low pressure over the Ohio valley will move off the Mid Atlantic Coast tonight. as high pressure centered over the Central Plains moves east.
1235 PM EST Sat Jan 14 2017 High pressure will keep the majority of the area dry this weekend with seasonal temperatures.
1239 PM EST Sat Jan 14 2017 High pressure over the central Great Lakes will move east today and allow a weak trough of low pressure to move through the lower Ohio valley.
Expect some freezing fog to develop this weekend with overnight low temperatures in the single digits and daytime highs remaining below freezing.
131 PM EST Sat Jan 14 2017 A dry low level environment and light wind field to continue through Sunday as high pressure maintains control. So with a little warmer air in the low levels, high temps today will break 30 over much of the area. A little better insolation on Sunday will warrant high temps a degree or two warmer compared to today.
256 PM CST Sat Jan 14 2017 Wx map shows a cold front just about stationary across Central to Northeast Texas, with a warm and humid airmass ahead of it.
A low pressure system departing across northwest Mexico will provide areas with gusty north winds and some lingering showers primarily across northwest Arizona.
149 PM EST Sat Jan 14 2017 A backdoor cold front will move just south of the area and become diffuse. The front will then move back north on Sunday, bringing a return to some warmer temperatures. An upper ridge over the southeastern part of the country will favor above normal temperatures through mid week.
154 PM MST Sat Jan 14 2017 A seasonal weekend in store for southeast WY and the western Nebraska Panhandle as we keep watch on an area of low pressure spinning across the Baja of California.
Morning water vapor satellite shows a strong upper low spinning near the northern Baja coast-line.
1105 AM CST Sat Jan 14 2017 It will be a quiet short term period with high pressure in control.
Freezing line continues to slowly migrate back to the northwest. so the latest additions to the warnings and advisories will continue through 2 pm with the thinking that those locations will warm above freezing. Rest of the weekend essentially unchanged as warmer air overtakes the entire cwa Sunday.
Another weak cold front will approach the area for mid week but should stall out nearby through the end of the week keeping conditions unsettled. In general, afternoon highs will range in the lower 70s north to mid/upper 70s south.
1100 AM MST Sat Jan 14 2017 The closed low responsible for the clouds and precipitation over the last few days has managed to reach the west coast of the Baja Peninsula at this hour and will continue to drift to the southeast over the next few days. By this evening and into Sunday, the low pressure will have moved to just south of New Mexico and will start moving towards the northeast. The location of the low and easterly flow will start favoring the Colorado Plains and southern portions of the Front Range as our precipitation finally starts winding down.