Aikyam-Lab/Synoptic-Bench huggingface dataset:
Also, temperatures were a bit warmer than expected and have tweaked the hourly values. /Issued 232 AM EST Sat Jan 27 2018/ High pressure has moved off the Middle Atlantic coast, with a high pressure wedge in place across much of the CWFA. A cold front currently across the middle of the country will begin to push east today into the Mississippi River Valley.
Frontal lift with the incoming cold front weakening through the afternoon hours will probably see precip with the front but not nearly the intensity that is ongoing at press time around Galveston County.
The sunshine, loss of linger snow cover and 925H temps around zero to 2 should allow daytime temps to recover into the low to mid 40s despite breezy west winds.
Cold front currently stretches from western Great Lakes into west TX. Brief/weak upper ridging will pass over the Rockies and into the Plains Mon night into Tue. This will result in deepening lee troughing Tue and gusty south winds Tue afternoon. A series of impulses are expected to follow the initial wave, which will carve out a deep broad upper trough from the Rockies into the Ohio Valley. There is some model agreement in snow chances Thu across the high Plains with some of this possibly making it into our forecast area.
739 AM CST Sat Jan 27 2018 Added a mention of light snow this morning to northwest North Dakota per observed trends through 1330 UTC in association with the compact upper level low/vort lobe observed on GOESEast imagery. Secondary cold front continues to drop through the area with temperatures dropping in its wake. Upper level analysis places broad trough dropping through the Great Plains. Weak wave rotating through the trough is producing a little light snow over southwestern portions of North Dakota. A compact short wave dropping through the trough will push through the area later today. For tonight, another weaker wave grazes far southwestern portions of the area as modestly warmer air tries to nudge in, bringing some snow chances. Warming trend then develops to start the week as ridge quickly builds in and passes over the area.
A short wave is moving across the plains this morning along with an associated Pacific cold front. The cold front will continue to advance toward SETX and Louisiana today while lift ahead of the short wave combines with ample moisture to produce one half to 4 inches of rainfall. Rain chances will decrease from west to east late this afternoon through tonight as the cold front moves through.
Quite strong high pressure centered offshore the northeast U.
Secondary cold front continues to drop through the area with temperatures dropping in its wake. Upper level analysis places broad trough dropping through the Great Plains. Weak wave rotating through the trough is producing a little light snow over southwestern portions of North Dakota. A compact short wave dropping through the trough will push through the area later today. For tonight, another weaker wave grazes far southwestern portions of the area as modestly warmer air tries to nudge in, bringing some snow chances. Warming trend then develops to start the week as ridge quickly builds in and passes over the area.
Moisture levels will continue to increase today as a cold front slowly approaches the area from the northwest. The heaviest rainfall is expected to focus offshore this evening and tonight where a weak area of low pressure is expected to develop. Highs today will range from the low 60s in the northwest to upper 60s in the southeast. Lows tonight will be in the low to mid 50s inland to upper 50s along the coast.
930 AM EST Sat Jan 27 2018 Rain is expected to develop today and tonight with a crossing cold front. Rain chances continue Sunday south of Interstate 68, with dry weather expected under high pressure elsewhere. Increasing moisture transport in SW flow, and improving upper air support, should result in the highest POPs this afternoon and evening. The front is progged to slide E of the area by Sunday morning, though a developing wave along the front in response to an approaching, deepening upper trough should slow its progression.
A cold front is currently making its way through the region. Despite the passage of the cold front, the air behind it is not very cold, so expect afternoon highs once again to reach the 50s. A good radiational cooling set up tonight with the high overhead.
There is still a slight chance for freezing rain to develop overnight and into Sunday morning. Rising snow levels are likely on Sunday due to a warm front passage so mixed precipitation will change to rain below around 5000 feet.
1051 AM EST Sat Jan 27 2018 The Florida Keys woke up to cloudy skies, temperatures in the low 70s and windy conditions, with observations of sustained winds of 15 to 20 mph and gusts to 30 mph. As the high pressure shifts to the east today and tonight, winds will veer from the southeast by tomorrow. Earlier this morning, at around 6 am, an altimeter pass was able to measure wave heights of 8 to 10 feet over the waters south of the Lower Keys and up to 14 ft over the Straits.
Today Through Sunday Night Cold front was located along the I-44 corridor early this mrng and was poised to enter the NW corner of AR.
Periods of LIFR/IFR withing MVFR conditions will continue to push across Southeast Oklahoma and Northwest Arkansas early this morning as a cold front moves through the CWA. With mostly sunny skies and limited cold air behind the front, temperatures are expected to rebound back into the lower 60s this afternoon.
535 AM EST Sat Jan 27 2018 Rain is expected to develop today and tonight with a crossing cold front. Rain chances continue Sunday south of Interstate 68, with dry weather expected under high pressure elsewhere. Increasing moisture transport in SW flow, and improving upper air support, should result in the highest POPs this afternoon and evening. The front is progged to slide E of the area by Sunday morning, though a developing wave along the front in response to an approaching, deepening upper trough should slow its progression.
We will continue to see generally scattered showers and isolated thunderstorms throughout the day ahead of a cold front which has moved through Waco and should reach our NW areas early this afternoon. Cold front nearing Fort Worth/Denton area and it should reach the CLL area 11 am and Downtown Houston 2-3 pm.
345 AM MST Sat Jan 27 2018 The Left Coast ridge will be establishing itself again over the nest 24 to 36 hours which will be keeping us in northwest flow. Warmer temperatures also mean the 25:1 ratios should fall back to 20:1 or less tonight through Sunday morning as the warm advection pushes the dendritic layer higher above the terrain. Snow amounts should be higher closer to the Wyoming border and we could see some 6 to 8 inches over the higher divide mountains above 10kft. The warmer air moving in should strengthen the valley inversions though we will have plenty of sunshine today and again tomorrow.
has developed ahead of an approaching cold front along a theta-e ridge. The aforementioned cold front, currently located across Central Oklahoma, will continue to move SE today across the region, bringing rain chances to the entire area. Current models also seem to pick up on this feature as well, which is reflected in the lower QPF amounts across these areas today. The cold front should clear the region by 00z today, which will essentially put an end to any significant rainfall. Sunday will be drier and cooler with overnight lows in the lower 30s.
/Issued 232 AM EST Sat Jan 27 2018/ High pressure has moved off the Middle Atlantic coast, with a high pressure wedge in place across much of the CWFA. A cold front currently across the middle of the country will begin to push east today into the Mississippi River Valley.
The majority of the rainfall will push east during the evening, but showers will linger as a cold front moves across the areas from the northwest.
The bulk of the rain today will be along and just ahead of the cold front that will move through this afternoon. Given the bit slower timing in the model guidance, have slowed down the highest pops today. Southern IN will have rain for more of the day and thus will top out in the lower 50s. Lows tonight will dip into the lower 30s to around 40.
Strong winds are expected as subsidence under the right exit of the jet forces the higher winds aloft to the surface.
614 AM CST Sat Jan 27 2018 A cold front will drop through the area today, and could see a few flurries through the Highway 14 corridor during the early part of the day with saturation in the dendritic layer. Temperatures will run a little cooler than yesterday, with highs mid 30s to lower 40s.
547 AM CST Sat Jan 27 2018 /12Z TAFS/ As of 5 AM, a cold front was passing through the KSJT terminal and will clear the far southern terminals by mid morning. /issued 328 AM CST Sat Jan 27 2018/ (Today and Tonight) A cold front is moving south across the Big Country early this morning and will clear far southern counties around the mid morning hours. For tonight, a drier airmass coupled with clear skies and light winds will allow temperatures to fall into the lower and middle 30s by daybreak Sunday.
424 AM CST Sat Jan 27 2018 We will see slow cold advection over the next few days, along with a series of weak PV anomalies as the upper pattern becomes more trof-y over the northern plains. The last wave of note is embedded in northwest flow on the western edge of the upper trough that will continue to migrate slowly eastwards with an amplifying upper ridge to the west Sunday.
933 AM EST Sat Jan 27 2018 A cold front will move east across the area late today and early tonight. High pressure will slide quickly across the Ohio Valley on Sunday ahead of a second cold front that will drop across the lower Great Lakes Sunday night.
436 AM MST Sat Jan 27 2018 The forecast focus is on the temperatures as the remaining snow cover continues to affect mainly the high temperatures across the forecast area for the next few days. During this time the northwest flow aloft across the Rockies becomes stronger and more amplified through the weekend as an upper ridge moves into the western U. A short wave trough embedded in the upper flow moves across the region mainly north and east of the forecast area on Sunday with strengthening unidirectional flow bringing gusty northwest winds to the area during the day on Sunday.
Later this evening and overnight cigs will lower to IFR levels with areas of rain sweeping across the terminals from west to east ahead of a cold front. Moisture will continue to increase at all levels as an upper level trough and associated surface cold front approach from the west. Highs will be in the lower to mid 70s.
Only a few echoes are showing up on radar early this morning off to the west ahead of the front and upper Midwest trough.
546 AM CST Sat Jan 27 2018 A cold front will move across the region today bringing widespread showers to area terminals along with MVFR/IFR conditions. has developed ahead of an approaching cold front along a theta-e ridge. The aforementioned cold front, currently located across Central Oklahoma, will continue to move SE today across the region, bringing rain chances to the entire area. Current models also seem to pick up on this feature as well, which is reflected in the lower QPF amounts across these areas today. The cold front should clear the region by 00z today, which will essentially put an end to any significant rainfall. Sunday will be drier and cooler with overnight lows in the lower 30s.
416 AM CST Sat Jan 27 2018 A weak cold front that move through the Panhandles last night will keep temperatures a bit cooler today. Highs expected to be in the low to mid 50s, but winds should be fairly light, so it may not feel that cool. Tomorrow will be very similar with temperatures reaching the low 60s. Upper level trough will continue to amplify across the central plains, keeping the Panhandle in the transition area between the warm and cold air.
Drier northwest flow will reside over the area today as an upper trough moves to our east. A warm front will be accompanied by a chance of showers across northern portions of the forecast area from late this afternoon through Saturday morning. The showers will end Saturday afternoon as a drier west-southwest flow aloft develops ahead of an offshore trough. Temperatures will trend warmer through the period - from below normal today to slightly above normal on Saturday.
Temperatures are expected to be just as warm if not a couple of degrees warmer than yesterday's highs. The surface pressure gradient will continue to tighten ahead of an approaching low pressure system keeping winds gusting out of the south to 25 to 35 mph. A mid level trough will dig into the southern U. tonight and gradually push a cold front through the Tennessee Valley.
Cooler air will move into the northwest around sunrise with a change over to all snow. As cooler air fills in the areas of snow will shift southeast and east. Strong mid-level cyclone will begin to occlude and weaken on Saturday, though a persistent H7 FGEN/TROWAL will continue to bring moderate snows to eastern portions of the forecast area through at least mid-day. Saturday afternoon the mod-level cyclone will be far enough east that we expect some clearing with some weakening of the wind as the tight pressure gradient weakens.
410 AM MDT Fri Apr 13 2018 An upper level trof will continue to move eastward into the central Plains state today.
High pressure will remain in control today with the center anchored in the western Atlantic. Nudged highs up a few degrees based on regime and new MOS guidance with readings mainly in the low 80s away from the coast.
The clouds will continue to build across southern Oregon and northern California, and a weak warm front will move from south to north. Highs on Saturday will be near normal for this time of year (except for a little warmer than normal east of the Cascades).
As for the winds today, the base of a powerful upper level trough moving east through the Rocky Mountains will move across our area today. Winds aloft will be very strong as this trough moves into the area. A cold front will move through tonight, turning winds to the northwest at 15 to 25 mph. Although a cold front tonight will cool temperatures Saturday, breezy conditions, and dry air may require another fire weather headline for Saturday afternoon.
which should help keep temps a couple of degrees warmer than last night.
High temperatures overachieved yesterday so have forecast today's highs into the lower 80s for most locations (1-2 degrees above the higher end of guidance). According to the latest model guidance some of the higher gusts in the 35-40 mph range may occur in southern IN and/or near the Bowling Green area in KY.
High pressure aloft will return to the interior west for the weekend.
Surface gusty winds are helping bring in the warmer air as well, but the subsident air under the ridging is keeping us relatively dry for now. If we are able to get unstable, we would see a north/south line of storms develop ahead of the cold front and push slowly northeast.
Saturday night an upper low over SW quadrant IA begins to progress N then E.
532 AM EDT Fri Apr 13 2018 Dry and warm weather will continue into Saturday before rain chances again increase with the advance of low pressure. Dry, warm, and breezy conditions will continue today under broad Eastern CONUS ridging.
The high sun angle will quickly melt any snow that accumulates on paved surfaces.
Expect gusty north to northwest winds amd much cooler temperatures today in the wake of yesterdays cold front.
/issued 825 PM EDT Thu Apr 12 2018/ Quiet weather will continue through the overnight hours as Atlantic high pressure ridges back westward to the I-10 corridor. with lows by dawn ranging from the mid/upper 50s north of Brooksville to the lower and middle 60s elsewhere. Weather continues mostly dry and even warmer for your Friday. This process will continue into the weekend as a strong cold front moves eastward across the Gulf of Mexico and deep south.
At 500 mb there was a cold trough over the Rockies with 12 hour height falls of 120 meters or more from northern AZ into parts of UT and western WY. Surface analysis early this morning showed low pressure down over KS north of KRSL and a warm front extending form the low into southeast NE and northern MO. SPC Day 1 outlook seems on track with southwest IA and parts of southeast NE with the highest chance of severe.
An unseasonably deep upper trough and its well advertised cold front will approach the area today tightening the pressure gradient and increasing the southerly flow especially near the coast. Some localized flash flooding will be possible with the highest threat being Saturday morning. Coordination with WPC this morning has resulted in maintaining the slight risk of excessive rainfall across the entirety of our region with the higher risk of flash flooding further off to the northeast.
1208 AM CDT Fri Apr 13 2018 High pressure over the southeast US continues to push away from the area this afternoon and evening. At the surface, our region is in the warm sector with a quasi stationary SW-NE oriented warm front northwest Missouri and southeast Iowa. The line will be aided by a low level jet of around 40kts and strong upper level speed max ahead of the upper level low pressure system. A dry slot will immediately follow the line of storms before the cold front and attendant low pressure system begins to push through the forecast area after sunrise Saturday morning. The cold front will clear the forecast area by Saturday evening.
Will also leave the wind advisory as is as current thinking the highest gusts will continue in conjunction with the low level jet axis this morning.
Cold front will approach late tonight, catching up to the dryline, generating scattered to numerous showers and thunderstorms. Behind the front much drier air sweeps into the region which will help to lower relative humidity values into the lower teens across the west; slightly higher east.
419 AM EDT Fri Apr 13 2018 A strong southerly flow will keep warm temperatures over the area today as high pressure moves slowly east.
Associated cold front will pass through the Texas and Oklahoma Panhandles by late afternoon. Below-normal high temperatures are expected today and Saturday with freezing temperatures will be possible tonight and Saturday night across most of the area.
By Saturday some ridging will be building into the area. Even with this ridging, there will be a weak wave moving through the flow that could bring a chance for some precip, mainly in the western zones. With the ridge building in expect temperatures to warm back up into the 50s for much of the area.
129 AM EDT Fri Apr 13 2018 As low pressure exits the Great Lakes region this evening, a trailing boundary will stretch across the southern Great Lakes tonight and Friday.
653 AM EDT Fri Apr 13 2018 A strong southerly flow will keep warm temperatures over the area today as high pressure moves slowly east.
Look for high pressure to bring quiet weather and a warming trend to all of northern Nevada for the first part of the weekend.
To add to the problems, a cold front will enter northwest Oklahoma around midday and push southeast across much of this area during the afternoon into the early evening along with an associated wind shift. With the ongoing fires across parts of far northwest Oklahoma, will go ahead and upgrade the fire weather watch in that location to a warning, even with potential for cooler temperatures and improving RH values. Friday night into Saturday, a very tight pressure gradient, associated with a strong area of low pressure in Kansas will continue to create very strong, gusty winds across Oklahoma and western north Texas. Even with a cooler airmass overspreading the area in the wake of the cold front, critical fire weather conditions are expected to occur as very windy and dry conditions continue.
Our western CWA maybe be delayed for a few hours due to warmer temps, plus slower storm progression.
A strong upper level low pressure system moves slowly across the forecast area between Today and Tonight before continuing over the eastern Plains states by Saturday night.
Could argue upgrading Dunn County to a winter storm warning given a persistent band of snow has been located across the southern third of the county, though it appears snow will be pushing back southeastward now through 12Z as low/mid level flow becomes more northeast, allowing dry air associated with high pressure over south central Canada to push south into the state which will push/erode snow quickly southward. Resultant temperatures cold with overnight lows approaching the single digits near the ridge.
355 AM EDT Fri Apr 13 2018 The latest surface map features deep low pressure located across the central Plains, with high pressure centered across the western Atlantic. Consequently, south to southwest flow in between these two features has ushered in a much warmer air mass across the Ohio and Tennessee valleys. Aloft, a deep trough is taking shape across the Rockies, with broad ridging east of the Mississippi River. Clouds will be on the increase after midnight, as the deep trough pushes east. A convective line will develop out ahead of the associated surface cold front, and this will push east into our area just after dawn and through the day on Saturday. Highs will range from the low to mid 70s in the west, to near 80 degrees in the far east.
440 AM CDT Fri Apr 13 2018 A deep upper level cyclone will lift out of the central Rockies into the central plains today. This system will bring blizzard conditions to portions of the central and northern plains today, extreme fire weather conditions to the southern high plains, and severe thunderstorms over eastern portions of the southern plains and the lower MS River valley.
Strong southerly winds continue south of the front with temperatures across the southern two-thirds of the KILX CWA in the lower to middle 60s. As the low tracks into southwest Iowa, strong to severe convection will develop along an advancing cold front across eastern Kansas/western Missouri late this afternoon into the early evening. Primary severe threats will be large hail and gusty winds, although an isolated tornado cannot be ruled out due to favorable low-level wind profiles in the vicinity of the low. Once the front passes, much cooler conditions will filter into central Illinois for the end of the weekend.
The other concern will be the wind shift today as a cold front passes through the area. A vigorous upper level low pressure system will move to near the four corners region by 12Z Friday, then translate eastward across the central plains states Friday and Saturday. The corresponding sfc cold front will move across the fcst area Friday. The progged path of this upper level low pressure system suggests slgt chc to low end chc pops for light rain showers are plausible for the nwrn half of the OK and TX Panhandles on Friday as the storm system moves by to our north.
437 AM EDT Fri Apr 13 2018 Quiet but warm weather continues today before the influence of the next cold front effects the area on Saturday. The next cold front will be crossing the lower MS valley late on Saturday with increasing shower and thunderstorm chances, most so for n GA. This elongated cold front extends from the central great lake states down across MS/AL and out over the central Gulf.
352 AM EDT Fri Apr 13 2018 High pressure centered off the coast will continue ridging into the southeastern states through Saturday.
/issued 907 PM CDT Thu Apr 12 2018/ Low pressure over the Plains and high pressure over the southeast U. In fact models show a second wave forming along the nearly stalled front Saturday riding up across central Mississippi into middle Tennessee as the upper trough axis becomes more negative.