Aikyam-Lab/Synoptic-Bench huggingface dataset:
1124 AM EDT Thu Jun 22 2017 Marine A cold front currently stretches from western Minnesota south to northeast Nebraska. A warm front stretched from central Wisconsin southeast to near Chicago. The next 24-30 hours will be stormy until the cold front passes through the state Friday. Several days of cooler weather will follow with highs in the lower to mid 70s over the weekend. A robust low level jet continues to generate convection in Wisconsin as it intersects the warm front that is in the vicinity. At this point, the higher chance of showers/storms will come this evening ahead of the approaching cold front. Skies will clear Friday behind the departing cold front.
1007 AM EDT Thu Jun 22 2017 High pressure will cross the region today.
This combined with warmer than normal temps aloft, around -5C at 500mb, should continue below normal rain chances today. Less cloud cover and expected lower convective coverage should allow highs to reach in the lower 90s with a few mid 90s possible inland. High pressure ridge axis remains north of the waters and pressure gradient will support southeast winds 10-15 knots.
Expect ceilings to drop to at least MVFR once the rain settles in and the low levels become saturated.
Broken/overcast cloud cover over Southeast Oklahoma and Northwest Arkansas today should help to keep temps slightly cooler this afternoon with highs in the mid/upper 80s forecast.
620 AM CDT Thu Jun 22 2017 The ongoing thunderstorm activity across SD moves east this morning allowing cooler air into Nebraska.
This will ride the ridge north into Canada before diving southeast through Wisconsin late Friday.
218 AM CST Thu Nov 23 2017 Happy Thanksgiving from the HUN midnight crew! Latest water vapor images are showing an upper trough digging into NW MS with cirrus clouds streaming along and ahead of it. The trough will move through this afternoon but won't do much to the sensible weather. Another fantastic radiational cooling night is forecast for tonight but with slightly warmer 850mb temps and a moisture surge from the southeast, lows will be slightly warmer, in the upper 20s to middle 30s.
This will leave weak high pressure over the eastern cwa with a developing surface warm front to the west. This pacific warm front may work into southwest MN this afternoon and with some southerly wind should be able to downslope some lower 50s to the lee of the Buffalo Ridge in the southwest.
Satellite is showing pretty quick clearing across the eastern Dakotas, so expecting skies to become clear overnight as a high pressure ridge passes by. Plenty of sun and relatively mild temperatures ranging from the mid-upper 30s north of I-94 to nearing 50 downwind of the Buffalo Ridge will make for a good day weatherwise.
Much of the state will be sunny today as high pressure remains in control. This high pressure will keep the bulk for the tropical moisture that is in place across the northeastern Gulf of Mexico from making it into the area. Lows will be in the low 30s north to low 40s south.
Low temperatures will fall near or below freezing, in the upper 20s in the north to low 30s in the south (well below normal some 10-15 degrees). Our area on Thanksgiving Day (Thursday) will be situated on the eastern periphery of strong ridging out in the Desert Southwest & into the eastern Pacific while broad troughing over the Appalachians & northeast CONUS. Expect high temperatures to be slightly cooler than today in the mid-upper 50s to low 60s (~ 5 degrees below normal). Lows Thursday night will be on the chilly side, mainly in the low to mid 30s.
310 AM CST Thu Nov 23 2017 The main story for today will be warming temperatures in a developing southwesterly low level flow as strong low pressure begins to slide along the U. With 925 mb temperatures around 18 C in our southwest, looking at highs into the lower 70s through south central SD, then rapidly tapering downward to the north and east, with highs only in the upper 40s to lower 50s east of Interstate 29. The aforementioned low pressure continues to slide eastward on Friday, pulling a cold front through our area during the day.
We're in a northwesterly flow regime on the eastern edge of the ridge with some cirrus being observed.
Rain chances return to the North Bay on Thanksgiving, but the rest of the region is expected to remain dry with continued warmer than normal temperatures.
442 AM EST Thu Nov 23 2017 High pressure will build into the area bringing dry weather and temperatures very close to average for Thanksgiving today.
Northwesterly flow aloft continues over the area as mid/upper level ridging remains over the western states. At the surface, a weak low pressure system was located over southern Minnesota this morning with a weak cold front extending southwest into eastern Nebraska/western Iowa. The remainder of the holiday weekend will be dry, but cooler than Friday.
SHORT TERM (Today through Friday): 500mb high centered just off the Baja CA coast and a broad mid level trough over the Eastern Gulf of Mexico will maintain a dry northerly flow over South Texas today and Friday. At the surface, high pressure will be centered over Deep South Texas today and tonight spreading along the Texas coast Friday.
Currently, there is a northwest-to-southeast boundary across ND separating cooler air to the northeast and the warmer air to the southwest. Strong upper level ridging today should bring even warmer conditions than yesterday for all of western and central ND.
205 AM CST Thu Nov 23 2017 Happy Thanksgiving! An upper level ridge was positioned over the western U.
After a very chilly start to the morning, highs today will stay in the mid 60s along the coast to the lower 70s inland. Another cool night will develop with radiational cooling occurring, bringing lows in the lower 40s across most locations. Temperatures will be around five degrees warmer tomorrow, but still remain very dry and sunny.
Lows tomorrow night not as cold though freezing temperatures will still be possible northwest and far north, especially in the colder valley locations.
Expect highs today to struggle to reach much above the low 60s across most of the forecast area. Only areas immediately south of Lake Pontchartrain and close to the Louisiana coast will remain the lower to mid 40s tonight.
As expected, this has allowed temperatures to drop to near or below freezing across parts of central Louisiana verifying the freeze warning issued yesterday afternoon. Further south, along the I-10 corridor temperatures are presently in the lower 40's and still expected to bottom out in the upper 30's around sunrise. The rest of thanksgiving day looks very pleasant as high pressure begins to settle over the region yielding clear skies, light northerly winds and afternoon highs in the low 60's. Friday will once again start off on the chilly side with temperatures in the upper 30's along the I-10 corridor and near freezing across central Louisiana. Afternoon highs will be just a few degrees warmer as high pressure begins to shift off to the east turning winds back out of the south by Friday afternoon.
1026 PM MST Wed Nov 22 2017 An upper level high will be centered just west of the northern Baja California coast tonight and Thu, and the upper ridge will extend into the Great Basin. This will leave CO on the front side of the ridge resulting in northwest flow aloft and some high level clouds. Highs will range from the upper 60s over El Paso county to the lower 70s acrs the rest of southeast CO, which are near record levels.
1203 AM EST Thu Nov 23 2017 Low level wind backed to the south and southwest during the evening ahead of the next low pressure system organizing over central Canada. A few wind gusts near 20 knots will be possible at FNT and MBS during the afternoon as southwest flow matures ahead of the cold front over the northern Great Lakes. This front is expected to stall there while the influence of high pressure over the Ohio valley returns late in the day through Thursday night. This cold front moves southeast across the area Friday night, bringing at least a chance of showers to the area.
A lee-side trough will strengthen some overnight into Friday morning ahead of another cold front which will move through the region Friday afternoon and evening.
The clouds move east with more sunshine by Thanksgiving afternoon, along with highs into the lower 40s. A large ridge of high pressure extended into the region this afternoon.
Tomorrow a upper level trough will dig from the Canadian Plains into the Great Lakes region which will force a cold front through the forecast area tomorrow evening/night.
A weak cold front will move through the area tonight. Record high temperatures November 23rd: Grand Island: 66 degrees set in 2011, 2005 Hastings: 70 degrees set in 1923 Thursday night will continue to be mild but there will be a cold front that moves through the area on Friday.
352 AM CST Thu Nov 23 2017 Upper level trof over the Ohio river valley to pull away from IL during today, as a weak disturbance exits eastern IL during this morning.
Max and min temperatures will be just a tad below normal with highs in the 50s and lows in the lower and middle 30s.
307 AM EST Thu Nov 23 2017 High pressure will dominate the weather through Friday. At the same time airmass will start to moderate over the region, allowing for slightly warmer afternoon highs today and even warmer readings on Friday. Ridges and more unsheltered areas may see a slight increase in low temperatures tonight, but still likely below freezing.
135 AM EST Thu Nov 23 2017 High pressure will build into the area and last through the weekend.
WV imagery shows West Texas and Southeast New Mexico under meridional flow aloft, courtesy of a highly-amplified ridge centered just over the western CONUS. An upper trough is making landfall on B. , and as the rest of it comes onshore further south over the next 48 hrs, it will dampen the ridge somewhat and transition flow aloft to NW. Unfortunately, as it traverses into the interior CONUS, the PacNW trough will drop a cold front into the region Friday night, knocking temps down around 10 deg F Sat afternoon.
1222 AM CST Thu Nov 23 2017 Currently, there is a northwest-to-southeast boundary across ND separating cooler air to the northeast and the warmer air to the southwest. The 19-20 UTC RAP/HRRR favor the potential development of fog across central North Dakota on the cool side of the low level baroclinic zone.
256 AM EST Thu Nov 23 2017 High pressure will build build across the east coast today through early Friday, before shifting offshore later on Friday.
This will result in lee trough development, southwesterly winds, and warming 1000-850 mb thicknesses especially on Friday.
1123 PM CST Wed Nov 22 2017 Relatively mild temperatures are expected over the next few days, with at least breezy conditions behind a cold front on Friday. Those southwest winds will continue into this evening before a weak cold front slides through the Plains overnight. ridge extending from the Baja to southwestern Canada.
312 AM CST Thu Nov 23 2017 Forecast discussion for routine morning forecast issuance Quiet weather with warmer temperatures today. Windy and warm Friday, then cooler (but still above normal) for the weekend. A series of strong cyclones tracking across Canada will be the primary factor controlling daily temperature changes. Moisture will be limited, so precipitation amounts will be light despite the strong cyclones.
The chilly weather will continue in the wake of the cold frontal passage yesterday. There could be a few low spots especially west in the Hill Country that see some min temps drop to the freezing mark but don't anticipate any freeze warnings as these same areas saw freezes in late OCT and the freezing temps should be confined to low spots. Will likely issue a Special Weather Statement to talk of the very cool temps expected overnight and the possibility of isolated freezing temps. A ridge of high pressure centered near Baja will bring us mid and upper level NW flow for the next several days. Highs in the 70s with lows Thursday night a few degrees warmer than the previous night, mainly in the 40s.
One caveat to keep an eye on tonight will be the potential for some freezing drizzle. If some freezing drizzle does develop, it should be brief. A mild Pacific airmass will advect across the region Thursday night and Friday ahead of an approaching cold front and upper trough. The cold front will swing through during the afternoon with some low-level cold advection in its wake. However, the strongest synoptic lift is progged over northern Wisconsin where the highest chances for rain showers will reside Friday afternoon.
The column is progged to warm even more on Friday with high temperatures expected to top out in the low to mid 70s, likely breaking a couple of record highs. A clipper system will drive a cold front south across the area late on Friday shifting winds to the northwest although the Pacific airmass will lag a bit.
310 AM CST Thu Nov 23 2017 Today through Tonight: Latest Rap and Satellite imagery showed an upper trough over the Mississippi Valley with high pressure over the Lower Mississippi Valley. For today into tonight the upper trough axis will push off to the east as upper ridging builds over the forecast area from the west. Lows for tonight with some additional radiational cooling, light winds and clear skies overnight lows will be from the lower to middle 30s. Strong upper ridging over the SW Conus and troughing over the eastern CONUS will result in upper NW flow over our region.
124 AM EST Thu Nov 23 2017 High pressure over the Middle Mississippi Valley will track across the Ohio Valley and move off the SE coast Friday.
This high will shift east overnight and winds will gradually shift to the south and begin to increase slightly. Light south winds will keep temperatures from bottoming out in most locations and most areas will remain above freezing. The usually cold air drainage spots will be cooler however, with the normal river valleys and lake shores dropping below freezing by morning. Warmer on Thanksgiving Day with afternoon highs well into the 70s.
The area of high pressure that brought the chilly temperatures to the area today was shifting off to our east early this evening. The combination of the cloud cover and southerly winds overnight should help to keep our overnight lows from reaching the lows we saw over the area this morning. High pressure will be departing the area this evening, followed by a weak short wave trough approaching from the northern Plains. The short wave will be rather rather moisture starved in the low levels, so only an area of mid/high level clouds will move across tonight.
Regardless of the flow aloft being fairly strong, much drier air in the low/mid levels will keep any precip chances out of the area through Thursday night. A west-northwest downslope flow for much of the day will become more southwesterly mid to late afternoon as lee side troughing develops across eastern Colorado. This will reinforce an ongoing warming trend with highs pushing the lower to mid 70s(F) this afternoon. Well above normal temperatures will continue into Friday regardless of a cold front projected to push through western Kansas early to mid afternoon.
953 PM MST Wed Nov 22 2017 Residual mid and high level moisture rotating on the eastern edge of the ridge of high pressure has allowed thicker cloud cover to persist across the northern portion of our forecast area this afternoon. Maybe just a few tenths will fall over the highest peaks before this wave is ushered out of the region.
415 AM EST Thu Nov 23 2017 High pressure centered over the lower Ohio valley will remain in control across the area through Friday. Low pressure will pass just north of the Great Lakes Friday night, bringing a cold front through the local area.
1251 AM EST Thu Nov 23 2017 High pressure builds in overnight, and holds on through Friday.
Regional high pressure will maintain mainly clear skies and a light north breeze through Thanksgiving. Temperatures should range from the lower to mid 30s well inland to the mid to upper 40s at the coast. /ISSUED 348 PM CST Wed Nov 22 2017/ Few cirrus clouds streaming in from the north in the wake of the cold front that passed through early this morning. High pressure will continue to build in from the NW through Thursday which will keep offshore flow through the rest of the workweek.
DISCUSSION Ridge west/Trof east pattern will be flattening to a more zonal westerly pattern as we finish out this Thanksgiving Holiday week. Current dew points across the region/nearby extend from the mid teens just upstream to the lower-mid 20s just downstream. The center of the high pressure ridge moves overtop tonight, and we should see good/strong radiational cooling for the bulk of the night, even if some high cloudiness increases toward sunrise, as a weak wave drops across the Great Lakes. With the high/ridge shifted east, should start to see return flow southerlies and building heights finishing out the week.
1241 AM EST Thu Nov 23 2017 A series of low pressure systems will track from the Gulf of Mexico NE across Florida and offshore the Carolinas late Thursday through Friday night, providing variable cloudiness along with a slight chance of light rain, mainly in southern and eastern areas.
On Friday, the trough will continue to move east across the area, with drier low level air filling in from north to south.
Overnight lows will have no problem falling into the 30s across the entire forecast area with multiple spots reaching freezing before sunrise. After a cold start Thanksgiving morning with temperatures near freezing, the dry air in place will allow temperatures to warm quickly with diabatic heating along with a return to light southerly winds. South winds will continue on Friday with a strong upper ridge positioned to our west, keeping us in northwest flow aloft.
1222 AM EST Thu Nov 23 2017 High pressure in the southern Ohio Valley will move east late tonight and Thursday.
An approaching trough/front system from the Gulf will bring better chances for rain and thunderstorms on Thursday. a decaying frontal boundary extends across Central Florida, while model data keeps depicting an amplifying mid-level trough over the northern Gulf of Mexico. This trough will send a series of energy impulses across the region, which will enhance shower activity and increase the potential for thunderstorms starting late tonight and into Thursday. The trough will also push an associated front across the area on Friday, supporting convection, gusty winds and periods of heavy rainfall. Temperatures remain relatively warm with afternoon highs in the low 80s across much of the area, morning lows in the mid-upper 60s away from the coast, and low 70s near the coastal metro areas.
239 AM EST Thu Nov 23 2017 A series of low pressure systems will track from the Gulf of Mexico NE across Florida and offshore the Carolinas late Thursday through Friday night, providing variable cloudiness along with a slight chance of light rain, mainly in southern and eastern areas.
At the surface, weak low pressure is located across central ND with warm front dropping south through central SD, and cold front extending back into MT and southern AB. On Thanksgiving, upper ridge axis will move into the Northern Plains with even warmer temps expected, 70s on the SD plains. Substantial northern stream trof will work through the Northern Plains on Friday. Northwest winds of 25 to 35 mph with gusts to 50 mph will be likely for much of Friday morning as the cold front moves through.
High pressure ridging will continue to hold over the forecast area through Thursday. Pressure gradients have slackened a bit today as was expected but will tighten again tonight and especially Thursday afternoon and evening along the east slopes of the Rockies as low pressure will be situated over southern Canada with high pressure across southwest Wyoming. This front will flatten the ridge resulting in lowering heights and cooler temperatures for Friday.
A rather high amplitude ridge over the western U. Temperature Friday afternoon will average 5 to 7 degrees warmer than today.
No cold air with this system, so most areas will see rainfall with some snow in the higher elevations mainly above 7k feet. High temperatures for Friday will be some 10 to 15 degrees cooler but still well above normals.
333 AM CST Thu Nov 23 2017 500 mb ridge from southern california into montana today. the higher terrain of the western RRV may see temps rise some as very warm air exists at 925 mb (+14 to +17C). Temps safely above freezing so just liquid and no travel concerns.
By daybreak on Thanksgiving, weak cold front to wash out, so do not expect any precipitation for the Thanksgiving holiday. This combined with sunny skies will allow temperatures to warm up into the low to mid 50s. Byrd A dry weak cold front will push through the region with breezy conditions likely to occur during frontal passage on Friday.
400 AM CST Thu Nov 23 2017 Upper level ridge building into the region, along with westerly winds will bring much above normal temperatures into the region today. An upper level trough and surface front will cross the region on Friday.
223 AM CST Thu Nov 23 2017 First off, Happy Thanksgiving everyone! I think most of us will be thankful for this nice forecast today as high pressure will be our dominate weather feature. Southerly flow kicks in tonight in response to low pressure tracking from Saskatchewan into western Ontario. Warmer start on Friday and southwest flow ahead of an approaching cold front will boost temperatures to near 50s across north central WI to the middle and upper 50s elsewhere. Cold front pushes through during the afternoon but look like better moisture convergence/chance of rain will be north of I-94. High pressure builds in Friday night for clearing skies with overnight lows expected to be in the 30 to 35 degree range.
1130 PM CST Wed Nov 22 2017 VFR prevails under high pressure with mostly clear sky and light winds. The flow aloft is out of the north helping to usher in cooler air. By Thursday afternoon into Friday, high pressure will move southeast of the area bringing a return of southwesterly winds to the state and a bit of a warmup.
252 AM MST Thu Nov 23 2017 Latest upper level analysis shows a high amplitude upper ridge over the western CONUS. For today, the upper ridge axis will move eastward over the high plains with even warmer temps expected over the forecast area today. A substantial northern stream trough will affect the Northern Plains on Friday. Northwest winds of 25 to 35 mph with gusts to 50 mph will be likely for much of Friday morning as the cold front moves through.
400 AM EST Thu Nov 23 2017 High pressure will dominate the weather through Friday. At the same time airmass will start to moderate over the region, allowing for slightly warmer afternoon highs today and even warmer readings on Friday. Ridges and more unsheltered areas may see a slight increase in low temperatures tonight, but still likely below freezing. The models depict a gradual amplification of a trough centered over the Great Lakes heading into the weekend.
An upper trough axis is passing east of the region at this time. This should make early Friday a few degrees warmer than early Thursday.
After tonight temperatures will be seasonably mild and reach the lower to middle 40's for Thanksgiving Day and into the upper 40's to lower 50's Friday.
Temperatures this morning are on track to be a few degrees cooler than originally forecast, so quite a few locations on the Plateau and Hill Country will see temperatures fall below freezing by sunrise. Increasing H5 heights in response to a broad ridge over Baja California will keep the region under dry and mild conditions Friday.