Aikyam-Lab/Synoptic-Bench huggingface dataset:
609 AM EST Mon Jan 16 2017 Chances for light freezing rain and light rain will increase today as a warm front lifts northward. Some light icing will be possible across far northern Indiana and lower Michigan through early this afternoon before temperatures warm above freezing. Rain will become more widespread tonight into Tuesday morning as temperatures warm well above freezing and low pressure lifts into the Great lakes.
9 AM temperatures were mainly above freezing except for the Missouri River Valley from around Bismarck to the SD border. A thin band of mid and high level clouds is tracking southeast through the forecast area today, associated with a weak trough. As the cold front sweeps southeast across the state today, southwest/west winds ahead of the front and northwest winds behind the front should provide enough mixing such that we should see temperatures in the teens and 20s again today. Tonight the small pocket of cooler air moves southeast and is replaced quickly with strong warm advection.
637 AM EST Mon Jan 16 2017 Aviation A low pressure system will track from Texas today through Michigan on Tuesday. This system will result in a wintry mix of precipitation for the region that changes to rain as some warmer air tries to move in.
Weak high pressure will still remain in control through the TAF period and VFR condition will prevail. /issued 430 AM CDT Wed Oct 5 2016/ SHORT TERM (Today through Thursday): Another warm and dry October day is expected across the RGV as persistent but flattened 500mb ridging remains in place. A deep upper level low will continue to move across the Northern Plains states today and act to weaken the ridge and shift it a bit to the south. but with the ridge weakening a bit. easterly to southeasterly flow will begin to deepen through the lower layers. Readings could be a few degrees cooler on Thursday.
Low precipitable waters with persistent mid level ridge will allow optimal heating to occur this afternoon with lower 90s probable over the area. The low level flow is forecast to back, and the inland trajectories should further enhance drying of the boundary layer, especially over eastern MS, but light wind will help to mitigate fire weather danger for now.
1131 AM EDT WED OCT 5 2016 A pressure ridge will extend along the Appalachians with an inverted trough just off the Southeast coast through Thursday.
Attention then shifts to the Pacific upper level trough moving onshore today. but current thinking is that overcast conditions will develop as the next upper level trough begins to impact the area tonight. Models indicate that the upper level trough near the Washington state coastline will dig southeast today as the strong jet sets up over Colorado. This trough will then move eastward across the cntrl Rockys over Wyoming and Colorado tonight and early Thursday before rapidly moving into the cntrl plains. Models have trended warmer and a little further east with a weak frontal boundary across the high plains. Kept a rain/snow mix for now along the higher ridges for now.
731 AM EDT Wed Oct 5 2016 High pressure will remain over New England and the eastern Great Lakes through Thursday.
They'll be limited by strong ridging and should dissipate by midday, but we are seeing some 40-50 dBZ returns so a brief shot of rain is possible in the few locations that will be affected. However, western periphery of an upper ridge will hold over the Ohio River Valley, and should deflect most of the moisture that is currently entering the mid Mississippi River Valley to our NW today and tonight. Highs should reach into the low to mid 80s. A few of the cooler eastern spots could see mid 50s. Upper ridge strengthens a bit over the area on Thursday, helping to bring mostly sunny skies and highs in the low to mid 80s.
High pressure ridge will continue over the region today and tonight and actually become a little stronger in response to Hurricane Matthew as it moves northwest across the Bahamas. and in fact with the ridge wedging in from the northeast PWATS today will actually be about 0. highs today in the mid 80s near the coast and in the upper 80s over interior locations and lows tonight ranging from the lower 60s over the interior to the lower 70s at the coast.
Upper low which brought abundant rainfall the past few days is lifting from northeast MT into southern Saskatchewan. Below normal heights with broad troffing and cyclonic flow will keep the potential for mountain snow showers going the next two days. Mid level lapse rates on the order of 7C/km show decent instability, and atmospheric moisture remains above normal, so there will be some local snow accumulation over the higher terrain both today and Thursday. This will be the focus of any rain/snow showers for the lower elevations tonight and Thursday. Temperatures will remain well below normal today and Thursday with potential freezes across the lower elevations each of the next two nights.
Better chances for storms will come Thursday night along and ahead of a strong cold front. Cooler and drier weather will be on tap for the weekend.
/issued 330 AM CDT WED OCT 5 2016/ Weather map shows high pressure ridging over most of the eastern U. This is not a cold front, but should bring dewpts back into the 60s, and allow lows to reach the mid 60s north to near 70 I-10 corridor.
742 AM EDT Wed Oct 5 2016 High pressure over the northeastern United States will keep fair weather across the region through late week.
1154 AM EDT Wed Oct 5 2016 High pressure will dominate our weather through at least the end of the week. High pressure centered over New England will dominate our weather today.
634 AM CDT WED OCT 5 2016 Low level flow around low pressure to the north resulting in weak cold advection and westerly low level flow.
While satellite imagery shows the upper level low pressure system continuing to spin to our north over the Canadian border, the accompanying trough axis which brought us additional afternoon/evening storms has pushed off to our east. At the surface, winds are on the light side thanks to a weak pattern across the area, with higher pressure building in behind the departing cold front. Didn't make any notable changes to forecast temps, with highs today in the low-mid 70s and lows tonight ranging from the mid 40s to lower 50s.
High pressure will bring a drier and warmer airmass for the end of the week.
Remainder of the day should feature a good amount of sunshine, with breezy westerly winds, especially near the Highway 14 corridor where a tighter gradient exists. Abundant rainfall in the past 24 hours may keep temperatures may be a little cooler in central/eastern portions of the forecast area today, but still looking for highs in the mid to upper 60s. The cooler air mass in place, along with fairly light winds, should allow temperatures to fall into the 40s for lows tonight despite the increasing clouds. Rotation of west end of southern Canadian upper low Thursday will aid in backing upper flow and expanding thermal contrast for moisture flow to act on, so that even the northwestern part of the forecast area, around Huron, will see a decent chance of rain/showers Thursday afternoon into the start of the evening.
A ridge aloft over the western Atlantic has been building westward, and the Florida peninsula is now on its western periphery, as evidenced by south-southwest flow aloft on the morning KTBW sounding. At the surface, an area of high pressure remains centered over the northeast, with ridging extending into the southeast. Florida resides between this ridging and Major Hurricane Matthew to the southeast.
1218 PM EDT Wed Oct 5 2016 High pressure will maintain dry and warm weather until the approach of a cold front this weekend. Upper-level ridge axis will shift eastward on Thursday night and Fri, leaving the forecast area beneath weak southwesterly upper flow.
12z Cape Canaveral sounding indicates onshore flow around 10 knots in the lower levels with SW flow aloft above 400 mbs.
1050 AM EDT Wed Oct 5 2016 Inverted coastal trough offshore extends inland to near St Augustine and westward to the Gulf of Mexico. Sharpening coastal trough along with high pressure wedging across the southeast U.
950 AM EDT Wed Oct 5 2016 High pressure will dominate our weather through at least the end of the week. High pressure centered over New England will dominate our weather today.
1145 AM EDT WED OCT 5 2016 Update A weak cold front in Iowa will continue to weaken as it tracks slowly east today and into tonight. A wave of low pressure forms along this front in Kansas on Thursday.
Low level flow around low pressure to the north resulting in weak cold advection and westerly low level flow.
1034 AM EDT Wed Oct 5 2016 High pressure over the northeastern United States will keep fair weather across the region through late week.
Weak upper level trough still on track to move over the forecast area today. Best chance for precipitation will be over the higher elevations through this evening with mostly dry conditions over the Snake River Valley. A second stronger wave will through this afternoon and evening supporting more showers, especially over the higher terrain. The showers will decrease and shift mainly into northern portions of the forecast area (Baker County and the Boise/West Central Mountains) on Thursday as heights rise with a developing weak upper ridge. Temperatures will be a few degrees warmer on Thursday, but still 5-10 degrees below normal.
1042 AM EDT Wed Oct 5 2016 High pressure over the northeastern United States will keep fair weather across the region through late week.
Looking for 70s for highs across the region today with 40s for overnight lows ahead of the approaching cold front and subsequent CAA. will usher in a round of colder fall-like temps with overnight lows in the lower to mid 30s.
Surface and upper level low pressure continues to spin over southeast Saskatchewan, and are forecast to move slowly east into Manitoba today. Main forecast issues involve mixed precip across the west and north related to deep vertically stacked low pressure system that will slowly depart the region today with strong winds continuing behind the system.
Expect cool and breezy conditions through Thursday as low pressure remains over much of the western United States. Another s/wv will move through the western mean trough today and into the central Rockies on Thursday.
701 AM EDT Wed Oct 5 2016 Valley fog and scattered clouds early this morning, will give way to sunshine during the day as high pressure takes charge.
634 AM CDT Wed Oct 5 2016 Weak front pushing into western MO this morning will stall out somewhere near or south of I-70 today, then push back north as a warm front later this evening. Despite the presence of this boundary, a lack of any deep synoptic-scale ascent should keep most of the day dry although some thunderstorm development is possible later today and overnight as a LLJ strengthens and feeds into the retreating warm front. Several additional rounds of showers and thunderstorms are possible throughout the day Thursday in a continuous warm air advection regime, with the highest chances coming later in the evening when a cold front will swing in from the west.
Issued by National Weather Service Pittsburgh PA 1001 AM EDT Wed Oct 5 2016 High pressure should maintain dry weather through much of the work week. Moisture from Matthew from the south and an approaching cold front from the west will increase the chance for rain this weekend. High pressure remains to our northeast with easterly low level flow across the Central Appalachians and Middle Ohio River Valley. Dry conditions under high pressure with southeasterly flow across the area. An upper trough approaches from the west as hurricane Matthew moves northward, our forecast area will be stuck in between for increased PoPs.
Chattanooga Airport, TN 86 58 86 59 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 86 56 84 56 / 0 0 0 10 Oak Ridge, TN 85 56 85 56 / 0 0 0 10 Tri Cities Airport, TN 80 50 80 52 / 0 0 0 10.
As Hurricane Matthew moves northward along the Atlantic Coast, wind flow around the system will enhance the drier air advection as well as amplifying an upper level ridge axis across the area. Have trended warmer than guidance for temperatures through the end of the week. Matthew will take a turn to the northeast along the Carolina coast in response to an approaching upper level trough over the weekend.
737 AM EDT WED OCT 5 2016 Cool high pressure will ridge down the East Coast and across the Carolinas through Thursday.
the winter weather advisory was expired for Southwest Phillips county and cancelled for the high line. GAH PREVIOUS SHORT TERM DISCUSSION: Low pressure system center stacked over southeastern Saskatchewan early this morning. Precipitation bands wrapped around the back side of the low a mix of rain and snow with temperatures in the low 30s across most of northeast Montana. Precipitation continues today with the proximity of the low but will be tapering off from the southwest as the low moves north. Winds also will remain strong today due to the lingering low pressure system and Lake Wind Advisory remains in effect for Fort Peck Lake.
1046 AM EDT Wed Oct 5 2016 Valley fog and scattered clouds early this morning, will give way to sunshine during the day as high pressure takes charge.
/issued 225 AM CDT Wed Oct 5 2016/ An upper ridge will continue to dominate the forecast over the next seven days.
All model indicate that it will fall apart around sunrise as it approach the Highway 63 corridor. A mixture of sun and clouds today will allow for high temperatures back in the lower to middle 80s. Over night convection will fade away by Thursday morning and an area of low pressure will develop across Kansas with an approaching cold front Thursday afternoon. A stronger cold front will move into the area late Thursday evening and Thursday night.
A trough from Wisconsin down to Arkansas was producing scattered showers, including a few in western TN and KY. Models continue to show this feature lifting off toward the northeast, deflected by a strong ridge axis running from New England to the Gulf Coast.
901 AM MDT WED OCT 5 2016 Updated to remove freeze headlines as temperatures have risen above freezing for most areas. Glance at surface observations across northwest Colorado showing most sites at or above freezing although we still have a few hours to go and some clearing noted on satellite over this area. Convectively enhanced showers linger through Thursday afternoon as the trough passes to our east and northwest flow settles back in. Showers will come to an end by Thursday evening as drier northwest flow moves in behind the departing upper level trough.
Expect cool and breezy conditions through Thursday as low pressure remains over much of the western United States.
Main forecast issues involve mixed precip across the west and north related to deep vertically stacked low pressure system that will slowly depart the region today with strong winds continuing behind the system.
the Pacific cold front has advanced into southwest Minnesota, western Iowa into southeast Kansas. The upper flow will be from the west southwest across the region ahead of the next upstream trough currently located from eastern Oregon into western Nevada. Highs today will be within a few degrees of climatology from the mid to upper 60s far northwest, to the lower 70s southeast. The upper trough in the west will advance through central Wyoming and the Utah/Colorado border by 12z. Ahead this trough, the right entrance region of a fairly strong 300mb jet max will reside across much of western Nebraska.
Temperatures will be quite mild, with highs in the low 80s northwest to mid 90s in the southern Rolling Plains. This will help keep temperatures warmer to the east of the dryline and may result in the development of some low stratus and light fog on the Caprock in conjunction with the moist advection. Models are generally coming more in line with each other regarding the strong cold front later this week. A more middle of the road solution between the NAM/GFS and ECMWF seems to be taking shape later this week with the cold front.
a little cooler to the northwest where it has rained. /issued 225 AM CDT Wed Oct 5 2016/ An upper ridge will continue to dominate the forecast over the next seven days.
944 AM EDT Wed Oct 5 2016 High pressure will remain over New England and the eastern Great Lakes through Thursday.
Issued by National Weather Service Pittsburgh PA 1158 AM EDT Wed Oct 5 2016 High pressure should maintain dry weather through much of the work week. Moisture from Matthew from the south and an approaching cold front from the west will increase the chance for rain this weekend. High pressure remains to our northeast with easterly low level flow across the Central Appalachians and Middle Ohio River Valley. Dry conditions under high pressure with southeasterly flow across the area. An upper trough approaches from the west as hurricane Matthew moves northward, our forecast area will be stuck in between for increased PoPs.
734 AM EDT WED OCT 5 2016 Aviation A weak cold front in Iowa will continue to weaken as it tracks slowly east today and into tonight. A wave of low pressure forms along this front in Kansas on Thursday.
1007 AM CDT Wed Oct 5 2016 Surface and upper level low pressure continues to spin over southeast Saskatchewan, and are forecast to move slowly east into Manitoba today. Main forecast issues involve mixed precip across the west and north related to deep vertically stacked low pressure system that will slowly depart the region today with strong winds continuing behind the system.
/issued 330 AM CDT WED OCT 5 2016/ Today will be much like yesterday, warm and dry, as persistent westerly flow aloft keeps the thermal ridge in place. SW flow will develop aloft later tonight as an upper trough digs through the 4 Corners region and on into the Central Plains Thursday afternoon.
strong cold front should be approaching and cross into the CWA early Thursday aftn with additional pcpn expanding along the bndry.
943 AM EDT Wed Oct 5 2016 High pressure will maintain dry and warm weather until the approach of a cold front this weekend. Upper-level ridge axis will shift eastward on Thursday night and Fri, leaving the forecast area beneath weak southwesterly upper flow.
1137 AM EDT WED OCT 5 2016 Hydro A weak cold front in Iowa will continue to weaken as it tracks slowly east today and into tonight. A wave of low pressure forms along this front in Kansas on Thursday.
939 AM MDT Wed Oct 5 2016 The upper low that brought the rain and snow to the forecast area the past couple of days has finally moved into southern Canada. Upper low which brought abundant rainfall the past few days is lifting from northeast MT into southern Saskatchewan. Below normal heights with broad troffing and cyclonic flow will keep the potential for mountain snow showers going the next two days. Mid level lapse rates on the order of 7C/km show decent instability, and atmospheric moisture remains above normal, so there will be some local snow accumulation over the higher terrain both today and Thursday. This will be the focus of any rain/snow showers for the lower elevations tonight and Thursday. Temperatures will remain well below normal today and Thursday with potential freezes across the lower elevations each of the next two nights.
An upper level low over southwest Washington this morning will shift eastward this afternoon and tonight. North to northwest flow will develop behind the low today and tonight.
More specifically, a ridge of high pressure remained anchored over the southeast United States. A large trough of low pressure and an associated cold front were to the northwest of Arkansas.
417 AM PDT WED OCT 5 2016 High pressure building overhead will bring dry conditions with mainly clear skies for the next several days. Cooler than normal temperatures again today, then trending warmer through the end of the week. Central California remains under a dry northwest flow aloft on the back edge of a broad flat upper level trough. A Pacific high pressure ridge is however building eastward and will bring a warming trend as it moves inland during the 2nd half of this week. Satellite loops show a weak cyclonic circulation embedded in the ridge, located near 31N 132W. Models handle the evolution of the incoming ridge similarly and drop the weak circulation and associated moisture to our south through the end of the week.
/issued 245 PM CDT Sat Mar 18 2017/ Latest sfc analysis shows last night's cold front stalled invof KMAF, and return flow has pretty much washed it out. WV imagery shows the upper ridge has moved east over the past 24 hours, and is almost centered over West Texas and Southeast New Mexico. However, winds under the ridge should remain under criteria. All this begins to change midweek as an upper-lvl trough pushes the ridge east. Cooler weather follows the trough into the extended, but temps remain above normal.
Some lingering showers over the northeast Oregon mountains this evening associated with a cold front that moved through the region today. Weak ridge over the area Sunday with partly to mostly sunny skies with temps in the 50s.
No changes to ongoing forecast with overnight lows dipping into the low-mid 50s over the interior and Gulf coast and upper 50s and low 60s for the east coast. Broad upper level ridge dominating the western CONUS will gradually shift east this weekend while trough over the northeast coast exits the region. This trough will bring weak front over South Florida on Sunday.
At the same time, a cold front was dropping south through the region and had made it as far as Lewistown as of 09z. Shower chances will increase through the day today as the cold front works south through the area increasing frontogenesis and inducing easterly upslope flow. Snow accumulations through Monday night look minimal with an inch across some of the lower elevations and a few inches over the mountains.
Upper ridge axis is right overhead currently and is progged to move eastward into Nebraska overnight. Ridge aloft will flatten on Sunday with increasingly zonal flow. Highs on Monday will be 20-25 degrees cooler across the eastern zones behind the front.
400 AM EDT Sun Mar 19 2017 Low pressure moves off the east coast today. High pressure crosses tonight. A cold front crosses Monday night.
1045 PM PDT Sat Mar 18 2017 Windy conditions associated with todays strong cold front passage will decrease tonight.
Clearing conditions are expected this evening as the weakening cold front clears the region and the associated storm system moves eastward. Surface ridging will begin to nose into the region behind this system, yielding tranquil conditions and cool temperatures tonight. High pressure will build in behind tonight's cold front and persist through the remainder of the short term. Drier air will move in on Sunday with high temperatures in the low to mid 70s. Somewhat warmer conditions are expected for Monday with highs in the mid to upper 70s.
The lowest visibilities are currently confined to the coastal counties just southeast of our area and would not be surprised if we see these 1 mile or less visibility values reach our southeastern counties by daybreak. Overnight lows tonight will be in the lower 60s with highs returning to the 80s areawide on Monday afternoon.
255 AM EDT Sun Mar 19 2017 High pressure will build in today and last into Monday. A moisture-starved cold front will pass through Monday night, making for a cool mid-week. Snow diminishing over the area as the upper low fills a little and moves to the SE. An additional inch of snow may stick on the higher elevations of the SC counties. The lower elevations are just a little milder, but could have something stick on the grassy areas and car tops. While some clouds may linger in the higher elevations early, clearing should occur everywhere. There could be a little mix with snow in the far north but the time of day and previously above freezing temps argue against any accums if snow does occur.