Aikyam-Lab/Synoptic-Bench huggingface dataset:
613 AM EST Thu Mar 9 2017 A cold front will move south of the area this morning and then stall in the lower Ohio valley this afternoon as low pressure moves east along the boundary. The low will reach the coast early tonight allowing the cold front to continue pushing south. Friday arctic high pressure out of central Canada will begin building toward the area. The high will bring cold air to the region for the weekend. A fairly unremarkable cold front bisected the area early today. Highs near 40 north to the low to mid 50s far south. For tonight models show low pressure moving along the front stalled across southern Ohio. Forecast soundings show conditional to moderate instability in the lower 6 to 8kft with good lift within the favorable snow dendritic growth zone.
Initially dry air in the low levels bringing mainly virga. Initially dry air in the low levels bringing mainly virga. As high pressure builds in tonight skies will clear.
Upper level troughing over southern Canada is expected to move southeastward into the upper Midwest by late tonight and help drag a backdoor cold front through western Kansas.
Cold air advection will persist through Friday morning as high pressure builds in from the northwest. This will keep today's high temperatures below the freezing mark for most locations, and overnight lows will be below zero across the north part of the forecast area and in the single digits across the southern part of the forecast area. The first is Friday night, as a weak trough noses into central South Dakota.
low to mid level clouds will move in tonight and a band of showers with local MVFR conditions will push in late in the period as cold front advances across the region.
550 AM EST Thu Mar 9 2017 High pressure will begin to rebuild over the region today, as a stalled front dissipates to the north of the area.
624 AM EST Thu Mar 9 2017 A cold front will move south of the area this morning and then stall in the lower Ohio valley this afternoon as low pressure moves east along the boundary. The low will reach the coast early tonight allowing the cold front to continue pushing south. Friday arctic high pressure out of central Canada will begin building toward the area. The high will bring cold air to the region for the weekend. A fairly unremarkable cold front bisected the area early today. Highs near 40 north to the low to mid 50s far south. For tonight models show low pressure moving along the front stalled across southern Ohio. Forecast soundings show conditional to moderate instability in the lower 6 to 8kft with good lift within the favorable snow dendritic growth zone.
538 AM CST Thu Mar 9 2017 High pressure that was centered over the lee side of the Canadian Rockies had worked into the forecast area as of 08Z. The high pressure will affect the region today through Friday. It's possible this will change and a better chance for snow returns, but it looks like an area of high pressure over central Saskatchewan Sat/Sun will be strong enough to keep chances for precipitation minimal across the Northland. In addition, temperatures have trended a bit cooler with highs in the teens to 20s over the weekend, which is around ten degrees below normal.
945 AM EST Thu Mar 9 2017 High pressure today. Cold front crosses tonight. A high pressure system will provide plenty of sunshine again today. Will go closer to the cooler LAMP MOS. A cold front will push through the area tonight.
/issued 550 AM EST Thu Mar 9 2017/ High pressure will begin to rebuild over the region today, as a stalled front dissipates to the north of the area.
well above normal temperatures continue today with readings in the low to mid 70s. Northeast winds increase through midnight at 10 to 20 mph with higher gusts as a cold front moves through from the northeast. Low temperatures in the low to mid 20s. much cooler (but near normal for this time of year) temperatures expected as forecast area under influence of high pressure. By late in the day warm front noses into parts of far eastern Colorado where warmest temperatures expected.
This will be ahead of a cold front arriving from the north. Today Through Friday Night Clouds will increase and thicken today as a cold front approaches from the north. It will start turning cooler behind the front.
721 AM CST Thu Mar 9 2017 For the 09/12Z terminal forecast, expecting IFR flight categories to prevail at most of the sites across the Four State Region as warm and moist air with a warm front lifts Northeast over the region producing ceilings from 3 hnd to 9 hnd feet and some. In wake of the warm front later during the afternoon some sites will return briefly to MVFR followed by VFR. Surface winds will be South to Southwest 5-10 knots today, dropping of to light and variable or light South less than 7 knots, and variable during the day Friday with Northerly winds for parts of Northeast Texas,South Arkansas, and North Louisiana with passage of a cold front. /issued 505 AM CST Thu Mar 9 2017/ Warm frontal boundary has lifted just north of area, ahead of schedule.
Outside of patchy fog over the North Bay, looks like a quiet weather day for our region with both a weak ridge of high pressure aloft plus minor offshore flow at the surface. Synoptically speaking, a flat ridge of high pressure will remain anchored over much of California.
905 AM EST Thu Mar 9 2017 A cold front will move south of the area this morning and then stall in the lower Ohio valley this afternoon as low pressure moves east along the boundary. The low will reach the coast early tonight allowing the cold front to continue pushing south. Friday arctic high pressure out of central Canada will begin building toward the area. The high will bring cold air to the region for the weekend. A fairly diffuse cold front over the southern counties will continue to drift slowly south. Highs near 40 north to the low to mid 50s far south. For tonight models show low pressure moving along the front stalled across southern Ohio. Forecast soundings show conditional to moderate instability in the lower 6 to 8kft with good lift within the favorable snow dendritic growth zone.
An mild westerly flow aloft will remain in place across the region through the upcoming weekend, followed by strong high pressure aloft across the western states for the first half of the week. Infrared satellite imagery early this morning hints at a ridge developing in vicinity of the Pacific Northwest, upstream of a weakening weather disturbance over the Northern Rockies. Models depict a shower or two in that same vicinity through today, otherwise quiet weather is in store for the forecast area as the aforementioned ridge axis slides inland. The ridge axis crosses UT early Friday, making that the likely warmest day of the week (around 10-15 degrees above normal).
837 AM EST Thu Mar 9 2017 Weakening high pressure ridge will build overhead Today, with most clouds associated with departing cold front expected to dissipate.
but freezing temperatures and snow are on the way.
Currently, the next system will come through with significant moisture transport ahead of it and a rather strong high pressure system to the North and East.
505 AM CST Thu Mar 9 2017 Warm frontal boundary has lifted just north of area, ahead of schedule.
630 AM EST Thu Mar 9 2017 Scattered showers will continue through the morning hours as a cold front swings through the North Country. Gusty winds will taper off, then pick up again on Thursday behind a secondary cold front. Towards the weekend there is the potential for snow squalls to develop on Friday as an arctic cold front brings much colder temperatures to the region. One to two inches of snow in the higher elevations is possible, but generally just a dusting to a couple tenths of an inch across the rest of the area. A weak low pressure system will pass well south of the region overnight.
Lower elevations across the remainder of North Central and Central Montana should get another 2 to 6 inches due to lingering northerly upslope winds behind a Canadian cold front, with mountains there receiving 6 to 11 inches. As a result, the southwest valleys will remain above freezing, limiting the potential for any snow. As warmer air creeps north on Friday, there will be a slight chance of freezing drizzle mixed with the snow across the north before below freezing temperatures begin to warm there behind the front as it moves north as a warm front.
Otherwise, high pressure centered over the southeastern U. /issued 422 AM CST Thu Mar 9 2017/ Early morning sfc analysis shows high pressure centered over nrn GA providing for a serly low-level flow over the forecast area, which in turn has pushed temps/dewpoints back into the steamy 60s. Meanwhile a stationary front was noted from low pressure over Quebec through the ern Great Lakes/Midwest to another low over the cntl Plains. Water vapor imagery shows flat ridging aloft over the Gulf with a near zonal flow to weak troffing covering most of the ern CONUS.
It will be cooler on Friday behind the boundary although with gusty northeast winds, increasing the fire danger yet again.
609 AM EST Thu Mar 9 2017 High pressure today. Cold front crosses tonight. A high pressure system will provide plenty of sunshine again today. Will go closer to the cooler LAMP MOS. A cold front will push through the area tonight.
603 AM EST Thu Mar 9 2017 Low pressure will remain over Quebec through Friday as high pressure approaching from Western Canada pushes colder air across the region.
Farther north a close evaluation of weather stations along the Continental Divide overnight have shown that the arctic air mass, well entrenched east of the mountains, has made it over Marias Pass, past Essex and recently into Polebridge early this morning. Here, accumulations of 8 to 14 inches with up to 2 feet across the higher terrain are likely. Steady precipitation will transition into a more showery regime Friday into Friday night as a cold front works its way across the region. Breezy winds are expected, especially over the higher terrain in advance of this front.
Upper level high pressure continues to remain the dominant weather feature over southern and central California. Temperatures this morning were generally running between 2 and 6 degrees warmer compared to 24 hours ago.
Synoptically speaking, a flat ridge of high pressure will remain anchored over much of California.
1015 AM EST Thu Mar 9 2017 High pressure will prevail through much of Friday, before another weak cold front crosses the region late Friday.
A ridge of high pressure remains across the southern Appalachians with a very dry airmass. Chattanooga Airport, TN 73 53 64 36 / 0 60 30 0 Knoxville McGhee Tyson Airport, TN 69 50 57 28 / 0 60 40 0 Oak Ridge, TN 69 50 56 28 / 0 60 40 0 Tri Cities Airport, TN 69 44 53 24 / 0 60 50 0.
A stronger wind shift/cold front will enter northern Oklahoma after 03Z and will progress southward through all terminals overnight.
High pressure over the central Atlantic and southeast United States this morning will keep the Florida Keys under a gentle to moderate northeast to east breezes this afternoon, subsiding later tonight and tomorrow. A cold front which was moving southeast over northern Florida and the Atlantic has eroded and no changes to the Keys are expected. Due to these observations in the high end range, operators of small craft should continue to exercise caution over the western waters of the Straits of Florida until winds subside.
914 AM EST Thu Mar 9 2017 Morning water vapor satellite imagery is showing a band of upper level moisture followed by a swath of dry air moving through the northern Florida Peninsula associated with a weak cold front. Overall the forecast looks on track with warmer than normal weather continuing into the weekend. A weak cold front will continue to drop south through the area today, with high pressure filling in behind the front and winds remaining around 10 knots or less.
High pressure is still forecast to push into the area late tonight and adjustments made account for this.
There is some uncertainty as to how far south the outflow and subsequent convection will move and have opted to leave any mention of precip to the ranchlands vicinity and out of the lower valley area. /issued 252 PM CDT TUE JUN 28 2016/ SHORT TERM (Tonight through Wednesday Night): Overall, a high-pressure ridge axis aloft stretching back toward the Four Corners region continues to dominate the region.
Lows will sink to the low 70s by morning. Scattered showers and thunderstorms have increased in coverage this afternoon in response to our warm and soupy airmass in place and a weak cold front sagging south toward our region. The aforementioned cold front should move through the region tonight and clear our area by tomorrow.
752 PM EDT TUE JUN 28 2016 High pressure with weak boundary layer flow continues across the Florida peninsula.
A ridge extending westward from the Atlantic will remain in place to our east through the rest of the work week, keeping winds generally from the east to southeast up to 10 knots.
A second short wave associated with a bit stronger cold front in northwestern Manitoba will move south and southeast and through the forecast area on Wednesday. Still looks like a cold front will drop from north to south across the FA Wednesday night. Any pcpn looks to move south and east of the FA by 18z Thu with high pressure moving back in. The high should be right over the top of the FA Thu night with clear skies and light winds.
930 PM EDT Tue Jun 28 2016 A cold front will continue to move southeast tonight and stall to the south by Wednesday morning. High pressure will build in the wake of the front.
1107 PM EDT TUE JUN 28 2016 A cold front will move slowly across the region this evening.
After midnight into the remainder of Wed morning, keeping the chances higher, around 50-60% from I-10 southward into the coastal waters as the weak low pressure trof drifts further southward towards the coastal parishes and counties. /issued 405 PM CDT TUE JUN 28 2016/ Radar looked more active across the area this afternoon as low pressure aloft finally has gotten a foothold. An upper level trough of low pressure will hang around another day with the best chance of rain remaining across the southern half of the area.
Britt An isolated shower or perhaps a few stray thunderstorms are possible across the far southern CWA late this afternoon, but the best pcpn chcs will continue to shift southward in tandem with a southward-moving cold front. Overnight lows in the mid 50s to low 60s should be roughly 5-10 degrees colder than last night, which is cooler than average for this time of year.
leaving behind much cooler temperatures and cloudy skies.
Did still keep a very low pop in Lake of the Woods region as the short wave trough will be over that area toward 12z. Still looks like a cold front will drop from north to south across the FA Wednesday night. Any pcpn looks to move south and east of the FA by 18z Thu with high pressure moving back in. The high should be right over the top of the FA Thu night with clear skies and light winds.
High pressure aloft will prevail over the Great Basin throughout the week. A weak disturbance moving around the high has spread moisture across Utah that will remain in place through the end of the week. The mid level high remains centered near 4 corners this evening with a short wave lifting up the west side of the high, with this feature currently over srn Nv and swrn Ut. Gusty winds will still likely accompany most storms but there will be a better potential for isolated heavy rain mainly south and east as the lower levels moisten up. The wave remains embedded in the high Thu but becomes less possibly most numerous northeast.
1135 PM EDT TUE JUN 28 2016 A cold front will move through the region tonight and bring a most welcome break of fair weather to the region for midweek. Lows tonight will be right around normal for this time of year with readings in the mid/upper 50s west of the Blue Ridge and mid/upper 60s to the east. However, the cold front that moves through tonight will be stalling out just to our south and will start pushing back to the north by late Wednesday. High pressure will build into the Upper Ohio Valley with its influence experience across mainly northern portions of the forecast area. Concurrently, low pressure will move eastward along the coast of the Gulf of Mexico.
912 PM EDT TUE JUN 28 2016 An upper trough will move east of the region this evening as high pressure builds in from the upper Great Lakes.
VFR will dominate beyond with upper level high pressure aloft and drying in the mid levels through Wednesday. A degree or two warmer Wednesday with highs in the lower to mid 90s after humid morning lows in the mid 60s to near 70. The upper ridge currently northwest of the FA will slowly push southeastward and flatten by late week. The West Texas Region will be close to the center of the upper ridge which is reflected in the temp forecast. Being close to the center of the upper high will allow little in the way of relief by rainfall.
As of early this afternoon thunderstorms were firing over the San Juan Mountains with outflow boundaries spreading to the southwest toward the lower elevations of the Four Corners. Convection was approaching thunderstorm stage over all ridgelines in the forecast area and storms were over Before 4 pm thunderstorms will little rain and gusty winds should be over the area currently in a Red Flag Warning in southwest CO and southeast UT. Today's convection will further moisten the lower levels so more storms will be rain-producing over SW and central CO and SE UT.
1248 AM EDT WED JUN 29 2016 A cold front will approach from the west this evening, then slowly cross the Tri-State through Wednesday.
805 PM MST TUE JUN 28 2016 High pressure will move somewhat north and east of Arizona this week allowing warm temperatures to prevail, but also bring a couple of weather disturbances through the state. Numerous weak outflow boundaries were converging through the lower elevations of central AZ likely modifying the environment.
Otherwise, drier air continues to filter into the northeast half with dewpoints down into the low to mid 60s per surface obs. Dewpoints will continue to lower as dry air oozes south overnight, with lows in the low to mid 60s expected.
High pressure will prevail over WI and N IL tonight and Wed. High pressure will move across the state tonight while northwest flow continues at 500mb. A lake breeze will keep temps slightly cooler near Lake Michigan.
However, expecting a thunderstorm complex or two to congeal over the high plains of western NE this evening, propagating southeast along 850-700mb thermal/moisture gradient into western/central KS later tonight toward Wed morning. If the NAM and associated hi-res models verify, a massive convectively-induced outflow and associated bubble high will settle across the area, leaving a stabilized, cooler and mostly thunderstorm-free atmosphere in its wake. In contrast, the GFS and ECMWF keep overnight complex further north and not as robust, allowing for a warmer and more unstable Wed airmass as the remnant outflow drapes across the forecast area. Wondering if the greatest potential for organized thunderstorm activity will be Thu afternoon-night, as approaching Canadian high pressure from the north enhances outflow/frontal convergence somewhere across southern KS/northern OK.
High pressure builds into the region late tonight, enabling winds to relax considerably. * High for cig aob 5kft until 29/03z Mid level low that tracked across lower Michigan through the base of the longwave trough, is now lifting northeast through southern Ontario away from the area. There is a filament of vorticity rotating around the backside of the low, which is trying to nose into northern Michigan. It sparked a few showers over northern Lake Huron, but dry air behind the cold front dropping through mid MI (dewpoints in the 30s!) is quickly eroding them. High pressure will start building into the area tonight, bringing with it the dry air already moving into northern Michigan. The aforementioned dome of high pressure will then center itself over southern Michigan by Wednesday evening.
Northwest upper level flow continues over the central US with a seasonal hot ridge extending from the Four Corners Region north into the Canadian Rockies.
A ridge of high pressure continues to dominate the areas weather with dry conditions and above normal temps.
724 PM CDT TUE JUN 28 2016 /00Z TAFS/ A rare summertime cold front brought showers and thunderstorms to the region today. As the ridge steadily reasserts itself, the remainder of the week should be rain-free. The remainder of the week looks hot and dry as upper ridging builds into the area from the west/southwest. An upper trough is forecast to move into the eastern US, dragging a weak cold front into the Central Plains.
722 PM EDT TUE JUN 28 2016 An upper trough will move east of the region this evening as high pressure builds in from the upper Great Lakes.
945 PM CDT TUE JUN 28 2016 High pressure remains over the forecast area and east into Minnesota. A trough continues to set up across the lee of the Rockies today. Temperatures today will be about 5 to 10 degrees warmer than yesterday. The main low pressure center will stay south into southeastern Montana and western South Dakota. A cold front will combine with favorable jet dynamics to spark more widespread showers and thunderstorms on Wednesday.
A trough continues to set up across the lee of the Rockies today. Temperatures today will be about 5 to 10 degrees warmer than yesterday. The main low pressure center will stay south into southeastern Montana and western South Dakota. A cold front will combine with favorable jet dynamics to spark more widespread showers and thunderstorms on Wednesday.
but with the dew points dropping into the low to mid 50s over the last few hours.
Some of the warmer spots in the valley will only cool to around 70 degrees. High pressure will weaken slightly for the next several days as a weak trough moves into the Pacific Northwest.
1247 AM EDT WED JUN 29 2016 Offshore high pressure will introduce a more humid air mass to the region on a southerly wind. A slow moving cold front approaching from the west will bring scattered showers and thunderstorms through Wednesday.
924 PM EDT TUE JUN 28 2016 A cold front will move slowly across the region this evening.
825 PM EDT TUE JUN 28 2016 A cold front will move slowly across the region this evening.
/issued 405 PM CDT TUE JUN 28 2016/ Radar looked more active across the area this afternoon as low pressure aloft finally has gotten a foothold. An upper level trough of low pressure will hang around another day with the best chance of rain remaining across the southern half of the area.
Chattanooga Airport, TN 68 91 65 89 / 10 10 10 0 Knoxville McGhee Tyson Airport, TN 66 87 62 86 / 10 10 10 10 Oak Ridge, TN 66 87 62 86 / 0 10 10 10 Tri Cities Airport, TN 62 83 59 83 / 10 10 10 20.
1127 PM EDT TUE JUN 28 2016 Offshore high pressure will introduce a more humid air mass to the region on a southerly wind. A slow moving cold front approaching from the west will bring scattered showers and thunderstorms through Wednesday.
749 PM EDT TUE JUN 28 2016 Cooler air will continue to filter into the area tonight as a ridge of high pressure settles into the area.
18Z surface data indicated high pressure over Minnesota with a frontal boundary from southern Kansas into southern Missouri. The light winds, dry air, and mainly clear skies should allow temperatures to drop into the low to mid 50s tonight. No record lows are expected tonight but favorable cold air drainage at Moline may allow the low to get close to the record.
The storms in southeast Georgia may linger slightly longer due to a trough of low pressure situated there.