Aikyam-Lab/Synoptic-Bench huggingface dataset:
/Issued 223 PM CDT Fri Apr 3 2020/ A strong cold front continues to march across the forecast area today. The front was faster and more aggressive into our area, and the freezing line even penetrated into Osage and Pawnee counties where some light icing on elevated surfaces caused the anemometers on the Mesonet stations at Burbank and Foraker to drop out. Temps are sitting right at freezing there now and are not expected to change much thru tonight and the drizzle should be ending there as well so no headlines are planned at this time.
Winds will remain around 10 knots or less through the weekend as high pressure builds in northeast of Florida, with winds turning onshore near the coast each afternoon with the sea breeze.
/issued 246 PM CDT Fri Apr 3 2020/ Low clouds behind the morning cold front continue to stick around the forecast area this afternoon. This will lead to temperatures near or below freezing for much of the southern Panhandle and northern South and Rolling Plains once again.
655 PM CDT Fri Apr 3 2020 Strong cold front currently bisecting the CWA with temperatures in the 30s over southeast Kansas into western MO and in the mid 60s east of the front. The clouds will help to keep temperatures from tanking tonight, with some temperatures near freezing over southeast Kansas and into central Missouri, but we are not expecting a hard freeze with temperatures near freezing and not below for very long.
622 PM EDT Fri Apr 3 2020 A ridge of high pressure will remain in control across the region through tonight.
Lowland rain and mountain snow showers will continue today as another low pressure system affects the region.
Temps near or below zero will be possible, particularly across northwestern MN where the highest snow totals were located.
Temperatures are not likely to fall much from current readings, although some clearing is likely in areas to the northwest of Tulsa where temps will likely drop to near of just below freezing. /Issued 223 PM CDT Fri Apr 3 2020/ A strong cold front continues to march across the forecast area today. The front was faster and more aggressive into our area, and the freezing line even penetrated into Osage and Pawnee counties where some light icing on elevated surfaces caused the anemometers on the Mesonet stations at Burbank and Foraker to drop out. Temps are sitting right at freezing there now and are not expected to change much thru tonight and the drizzle should be ending there as well so no headlines are planned at this time.
958 PM EDT Fri Apr 3 2020 A ridge of high pressure will remain in control across the region through tonight.
740 PM EDT Fri Apr 3 2020 High pressure will continue across the CWA overnight. Will see varying amounts of upper-level cloud cover streaming across the region over the top of the weak upper ridge axis centered over the north- central/northwest Gulf of Mexico.
733 PM EDT Fri Apr 3 2020 Dry conditions will persist most of tonight under the influence of high pressure. Low temperatures tonight will drop back into the 40s, with high temperatures on Saturday ranging from the upper 40s to around 50 across southwest Lower Michigan to the lower 60s across far northeast Indiana and northwest Ohio. Cooler temperatures will be felt from combination of cloud cover and limited CAA arriving behind the system.
There is mainly zonal flow aloft for the CWA tonight and Saturday as upper ridging moves in late in the day.
This disturbance will advance east-southeastward through the TN Valley overnight, in zonal flow within the base of an amplified mid-level ridge extending northward from the OH Valley into eastern Ontario. However, IR satellite data indicates a rapid northeastward expansion of convective debris clouds from storms over south central TX, and this may ultimately result in temps a few degrees warmer than indicated in the grids.
408 PM CDT Fri Apr 3 2020 Latest surface analysis revealed a 1017mb high over Indiana/Ohio with the ridge axis southwest across the Lower Mississippi Valley and a cold front Wisconsin to northeast Texas to Big Bend Texas. Light southeast winds were present over the Lower Mississippi Valley. Surface dewpoint ranged from the lower 50 from central Mississippi to the upper 50s to the Louisiana coast. Upper air analysis showed a cyclonic circulation off the northeast coast and a large trough over interior Rockies. In addition, ridge axis was present from mid Mississippi Valley to Wisconsin. In addition, zonal flow was present over the Lower Mississippi Valley. Upper level cyclonic will continue to rotate over the northern Rockies with the trough axis pushing east through Friday.
307 PM MDT Fri Apr 3 2020 Satellite imagery and upper air analyses show a large upper low over southwest Canada with below normal heights extending through the northern Rockies and high plains.
743 PM EDT Fri Apr 3 2020 A ridge of high pressure will remain in control across the region through tonight.
The approach and passage of a cold front will create unsettled aviation conditions during the overnight hours. /issued 246 PM CDT Fri Apr 3 2020/ SHORT TERM (Now through Saturday night): The main focus will be on a cold front moving through the area tonight. The ingredients will be in place for an increased risk of severe weather with the front, a slight risk, though the cold air behind the front will settle things down pretty quickly, with cooler, cloudier, and showery conditions behind the front on Saturday.
/issued 245 PM CDT Fri Apr 3 2020/ Latest mesoanalysis/sfc obs/area radars show the cold front down in the lwr Trans Pecos, w/a line of convection extending along the front into central Texas. CAA will continue overnight, banking colder air up against the higher terrain Saturday, yielding unseasonably cool temperatures, especially over the upper Colorado Rvr valley. Wed or so, long-range models begin moving the west coast trough onshore around the CA/Baja border. The GFS is fastest, bringing the trough to the Texas Panhandle by 00Z Fri.
654 PM CDT Fri Apr 3 2020 Latest surface analysis and the fine line seen on radar indicates that the cold front has moved into the western part of the St. There is also a post-frontal band of rain that will continue to slowly move east across the CWA late this afternoon into tonight as the upper trough currently the Upper Midwest lifts northeast into the Western Great Lakes at the same time the surface front moves into the Tennessee Valley. This along with north winds and scattered showers continuing into the afternoon over the southern CWA, have kept highs in the lower to mid 50s. Temperatures will be slightly warmer tomorrow night with lows in the upper 30s and lower 40s.
The mid-level trough axis pivoted northeast of the CWA today with an advancing Canadian high pressure diving into the Central Plains to help push the system that brought freezing rain and sleet to the area earlier today east of the area.
648 PM CDT Fri Apr 3 2020 A cold front will continue to slowly move eastward during the TAF period, becoming stationary just east of a line from Lufkin,TX to Shreveport, to El Dorado AR. The main forcing is focused along and ahead of a cold front that extends from Fayetteville, Arkansas southwestward across McCurtain County, Oklahoma to Quitman, Texas. Showers and storms will decrease in coverage and intensity overnight as the cold front stalls. As the front stalls and straddles our region, the thermal gradient will be very evident tomorrow with highs ranging from the lower to mid 50s from Tyler, TX to Idabel, OK to the lower to mid 70s for locations like Natchitoches, Jena, and Monroe in Louisiana.
919 PM EDT Fri Apr 3 2020 Westerly flow continued aloft, as a flat upper ridge dominated the northwest Caribbean and deep upper complex cyclonic circulation southeast of New England settled southward. Once again, heating during the day reduced pressures slightly causing bifurcation of the once continuous ridge. Overnight, the two pieces of the weak high pressure gradually rejoin with the only forecast issue increasing moisture at 15K-25K feet advecting eastward north of the upper ridge. High pressure will build over the Atlantic offshore the southeast U. Low pressure developing offshore the Mid Atlantic will push high pressure further south and east, allowing for light south to west breezes to occur by midweek.
A trough will approach the area on Saturday and bring our next round of precipitation. High clouds will increase late tonight and tomorrow ahead of the incoming trough, with south to southeast winds becoming breezy during the day tomorrow. Increased southerly winds and warmer air will allow highs tomorrow to rise about 5 degrees from today.
As a result, lows are only expected to fall into the low to mid 50s areawide by Saturday morning. Scattered rain showers will return to the region late Saturday morning as a weakening cold front approaches from the northwest. Expect a short lull to occur until the overnight hours when showers ahead of a cold front begin to spread into Northeast Arkansas.
530 PM MDT Fri Apr 3 2020 Deep upper trough will dig into the western CONUS, supporting downstream riding and warming trend locally as mean SW flow develops. Deep layer ridging will ensue tonight with staunch pressure falls per lee side troughing. Much warmer conds expected tomorrow, although snow pack will continue to hamper T rises.
High pressure settles over the region tonight. With clear skies, fresh snow, and lower heights in the upper trough, temperatures will plummet again. Because of the drier air moving in on the high, models are not picking up on any fog potential. Above freezing temps and some snow melt may cause some shallow fog to develop toward the end of the short term.
However, the low-levels are still quite dry with surface dewpoints in the mid 50s.
There may be a little freezing drizzle on the backside of the showers later tonight. However, road temperatures may remain above freezing, especially in eastern parts of the area. They may reach or dip a little below freezing in western parts of the area, so this would be the area to watch overnight. The freezing drizzle would be brief and do not anticipate much impact from this. Cooler temperatures are expected for tonight into Saturday. Area of showers will push east through the area tonight, as a cold front moves through the region. There may be a brief period of freezing drizzle on the back edge of the showers later tonight. However, think this would be brief and confined to mainly Madison and locations to the west, where pavement temperatures may dip to around freezing.
930 PM EDT Fri Apr 03 2020 Low pressure over the western Atlantic will drift southward tonight and early Saturday, but finally push east and well offshore the middle Atlantic coast Saturday afternoon and night. The low pressure offshore combined with high pressure centered near the Great Lakes will result in the dry and cool NW flow across the middle Atlantic states through Saturday.
High temps will be a few degrees warmer, ranging from the low 50s north to around 60 degrees in the south-central valleys.
419 PM CDT Fri Apr 3 2020 Latest surface analysis and the fine line seen on radar indicates that the cold front has moved into the western part of the St. There is also a post-frontal band of rain that will continue to slowly move east across the CWA late this afternoon into tonight as the upper trough currently the Upper Midwest lifts northeast into the Western Great Lakes at the same time the surface front moves into the Tennessee Valley. This along with north winds and scattered showers continuing into the afternoon over the southern CWA, have kept highs in the lower to mid 50s. Temperatures will be slightly warmer tomorrow night with lows in the upper 30s and lower 40s.
308 PM MDT Fri Apr 3 2020 Satellite imagery and upper air analyses show a large upper low over southwest Canada with below normal heights extending through the northern Rockies and high plains.
This is driven primarily by steep mid-level lapse rates eminating from the higher terrain to the west along with an increase in moisture and some weak diffluent flow aloft. The best moisture and lift will be north of the Missouri River, so this is where we will see the best chance for precipitation with the highest PoPs near the Canadian border. Snow showers will develop along a cold front tonight, but should mostly stay north of the TAF sites. SE winds around 10 knots this evening into tonight will turn to the northwest behind the cold front Saturday.
With warmer air in the valleys, the rain may linger a bit longer than the ridge tops. Look for the cold front and associated wintry mixed precipitation to be east of the area by later this evening. High pressure then builds in overnight and then sprawls across the area through Sunday.
High temps will be a few degrees warmer, ranging from the low 50s north to around 60 degrees in the south-central valleys. Clouds will thicken again Saturday night ahead of an approaching cold front, with a chance of a few rain showers by Sunday. Weak upper ridging will be in place overhead early in the period. This will likely dry up most of what remains of meager moisture moving in with a cold front on Sunday. Temps should be a notch warmer for many locations Mon aftn, but some clouds should return from the SW by the end of the day.
Today through Sunday: The area is still feeling the affects of the strong cold front that moved through the area yesterday. High temperatures today are 15 to 30 degrees cooler for much of the forecast today. Surface analysis shows a high pressure currently located over South Dakota.
Could see some sunshine with highs in the low to mid 60s. Byrd With decent upper level ridging overhead will see temperatures moderate through mid week.
GOES water vapor imagery shows the Pittsburgh forecast area remains underneath an amplified, though narrow, ridge, with the axis stretching across the Great Lakes. A trough rotating around a deep, mature storm off the Mid-Atlantic coast is helping overspread a stratus deck across far northeast portions of the CWA towards the Allegheny National Forest. A light northwest flow will prevail through the day, which will hold temperatures closer (but still warmer) to average despite plenty of sunshine. Large-scale subsidence will follow in the wake of the aforementioned trough and cold front.
This afternoon, the main upper low was visible on radar with a line of broken returns from Redwood Falls up through Long Prairie at 230pm. Fortunately, as the day has worn on, the warm nose aloft has started to cool off, allowing p-type to switch over to snow, but a period of freezing rain is likely through about 6pm for Eau Claire up through Rusk counties in WI before the warm nose cools down enough over there to end precip as all snow. Saturday night, high pressure will be centered over WI.
Warmer tomorrow, with high temperatures forecast in the 60s to low 70s.
High pressure will remain over the Western Atlantic waters this weekend keeping an easterly wind flow over South Florida. This low level short wave will bring in some low level moisture to the region starting late this afternoon into Sunday. Highs on Sunday will be a little cooler due to more cloud cover, but still will be in the lower to mid 80s, except around 80 east coast metro areas.
254 AM CDT Sat Apr 4 2020 A cold front will depart to the east this morning, bringing noticeably cooler air. The cold front has reached the Indiana border as of 230 am CDT, with brisk northwest winds in its wake ushering in much cooler air. Temps will approach freezing in our western counties by sunrise this morning, with wind chills in the 20s. High pressure tonight will provide mostly clear to partly cloudy skies and light northeast winds, setting the stage for low temps to dip into the mid to upper 30s. Sunday will be dominated by dry high pressure, and a gradual shift in winds from NE to E-SE late in the day.
High pressure still in place over the eastern Dakotas with west/southwest winds in the west. Upper level analysis places ridge over the midwest, with low along the Alberta/British Colombia border. On Saturday, a short wave rotating around aforementioned upper low zips through northern portions of the area. As for timing, have broadbrushed in the low pops as timing remains tricky given the speed of this compact system. Another upper low over the Pacific moves onshore on Sunday. A variety of short waves ejecting ahead of this low will bring modest precipitation chances to the area Sunday afternoon and evening.
Warm air advection will ramp up early in the week as broad upper ridging amplifies over the central CONUS.
Band of light rain is slowly sinking southward over the SC Mountains and portions of the Lower Susq. High temps will be a few degrees warmer, ranging from the low 50s north to around 60 degrees in the south- central valleys. Temps should be a notch warmer for many locations Mon aftn, but some clouds should return from the SW by the end of the day.
1158 PM CDT Fri Apr 3 2020 Strong cold front currently bisecting the CWA with temperatures in the 30s over southeast Kansas into western MO and in the mid 60s east of the front. The clouds will help to keep temperatures from tanking tonight, with some temperatures near freezing over southeast Kansas and into central Missouri, but we are not expecting a hard freeze with temperatures near freezing and not below for very long.
This is due to mid level moisture moving into the area well ahead of a weak cold front over Missouri and Arkansas. RG Chattanooga Airport, TN 74 52 77 54 79 / 0 10 20 10 30 Knoxville McGhee Tyson Airport, TN 72 50 74 53 76 / 10 0 20 10 30 Oak Ridge, TN 72 50 74 52 76 / 10 0 20 10 40 Tri Cities Airport, TN 70 45 71 49 73 / 0 0 20 10 30.
Dry weather for Saturday with light rain moving northwards into Saturday night across southern and central areas as an upper level low slides south along the Oregon coast. Drier conditions are expected on Saturday before a chance of light rain Saturday night into Sunday as an upper level low slides south along the west coast.
There may be an increasing threat for MVFR category ceilings to build into the GLH area later in the period, but high pressure is making it tough for the lower levels to moisten up and will hold off on any lower ceilings for now. A cold front to our west will move closer to our area and even dip into the Delta region by tomorrow.
(Today and tonight) Overall, warmer today with decrease in cold air advection and thinning/decreasing cloud cover all but perhaps southeast parts of Oklahoma. By this evening, southerly flow will return and erosion of cooler airmass will be apparent. Lows tonight are forecast to be 5 to 10 degrees less cold Sunday morning with no expected threat of freezing temperatures.
249 AM MDT Sat Apr 4 2020 The upper low and trough that brought the cold temperatures across the forecast area the past few days will shift east of the state this afternoon. This will allow upper level ridging and a southwest flow aloft to build over the state later this afternoon continuing through Sunday. However, a weak cold front will move across the forecast area today.
The sfc front has moved all the way through our area with temperatures ranging from near freezing over some of our northwest/western counties to the 40s/low 50s in south central MO.
Broad upper level ridging will keep the weekend fairly quiet with temperatures moderating into the mid 40s to mid 50s for Saturday and mid 50s to mid 60s for Sunday. If we can stay on the lower end of the spectrum as far as cloud cover, temperatures could be even a shade higher than forecast.
/Issued 740 PM EDT Fri Apr 3 2020/ High pressure will continue across the CWA overnight. Will see varying amounts of upper-level cloud cover streaming across the region over the top of the weak upper ridge axis centered over the north- central/northwest Gulf of Mexico.
A mean longwave trough remains in place across the western CONUS this evening. Meanwhile, southern Utah will continue to see some midlevel clouds for the next few hours before they dissipate behind the trough axis. Winds will increase, especially across southern and portions of western Utah, with warmer temperatures expected. Otherwise, moisture will start to spread in from the southwest ahead of the upstream storm system as it continues to dive south along the West Coast before the low becomes cut off from the mean flow.
Tonight and Saturday The main focus of the short term forecast will be the passage of the cold front and the accompanying precipitation. Tonight, the cold front will make its way across the area, bringing rain to the entire region. Overnight low temperatures will be coldest in the west, where the cold front comes through first. A few slick spots could develop on wet surfaces overnight as temperatures drop below freezing. Saturday, rain will move out of the region by midday, with drier conditions and clearing skies moving in fairly quickly behind the departing systems as high pressure returns. Temperatures will be fairly close to normal, which will feel cooler than the past few days.
With moisture increasing will see slight chance of showers mainly in the higher elevations of northeast GA tomorrow afternoon.
131 AM EDT Sat Apr 4 2020 Dry conditions will persist most of tonight under the influence of high pressure. Low temperatures tonight will drop back into the 40s, with high temperatures on Saturday ranging from the upper 40s to around 50 across southwest Lower Michigan to the lower 60s across far northeast Indiana and northwest Ohio. Cooler temperatures will be felt from combination of cloud cover and limited CAA arriving behind the system.
GOES water vapor imagery shows the Pittsburgh forecast area remains underneath a ridge, with the axis stretching across the Great Lakes. A trough rotating around a deep, mature storm off the Mid- Atlantic coast is helping overspread a stratus deck across far northeast portions of the CWA towards the Allegheny National Forest. Mostly clear to partly cloudy skies and dry weather are expected under weak high pressure Saturday. Otherwise, dry weather is expected under building high pressure over the Great Lakes.
231 AM MDT Sat Apr 4 2020 The cooler area of high pressure in place at the surface over the central High Plains region today slides off to the east over the weekend with a trough of lower pressure deepening in the lee of the Rockies by Sunday. Broad west to southwest upper flow will provide some weak short wave ridging over the forecast area through the weekend.
348 AM EDT Sat Apr 4 2020 High pressure will build into the region today into Sunday.
242 AM MDT Sat Apr 4 2020 Weak ridging will set up across the western part of the state today as a trough sweeps by to the north. Thermal ridging strengthens across the state as well, with H7 temps 4 to 6 degrees C higher this afternoon and 8 to 10 degrees C tomorrow. The only weather impact noted is from the effects of a trough dropping down the west coast this weekend. Southwest flow continues across the forecast area Sunday night with the strong closed low off the coast of northern California and a trough digging into the west from Canada.
339 AM CDT Sat Apr 4 2020 Big ridge of high pressure at the surface will be the predominant influencer of weather across the area for the remainder of the weekend. As a result temperatures have dropped below freezing for this morning, however low stratus has helped keep temperatures a little more palatable. Mid level ridging will help keep conditions dry and on the upward trend for temperatures.
423 AM EDT Sat Apr 4 2020 As an offshore low pressure system moves out to sea tonight, the rainy pattern of the last few days will come to an end. May see some patchy drizzle and mist lingering tonight, but high pressure building in Saturday will bring increasing sun and warmer temperatures.