Aikyam-Lab/Synoptic-Bench huggingface dataset:
240 PM EDT TUE SEP 20 2016 Skies are partly to mostly cloudy with temperatures ranging from the rain cooled lower 80s to the lower 90s along the Florida Keys. Meanwhile, local radars are detecting only a few showers left from an earlier band of showers along the Lower Florida Keys, with only a few showers on the coastal waters surrounding the Florida keys.
642 PM EDT TUE SEP 20 2016 High pressure and no change in airmass will keep temperatures above normal through the end of the work week.
/issued 553 AM CDT TUE SEP 20 2016/ /12Z TAFS/ Upper high pressure will settle over West Central Texas with mostly clear skies and light winds at all terminals through the next 24 hours. /issued 446 AM CDT TUE SEP 20 2016/ (Today and Tonight) Upper level high pressure will settle over the forecast area through tonight resulting in mostly clear skies and dry weather. Highs today and lows tonight will be around 5 to 10 degrees warmer than average with afternoon highs in the mid 90s and morning lows around 70.
324 PM CDT TUE SEP 20 2016 Upper level ridge over the southern plains will slowly break down and move east with time through the late week.
154 PM EDT Tue Sep 20 2016 High pressure will remain over the Ohio Valley through the rest of the work week, allowing dry weather to continue.
129 PM EDT Tue Sep 20 2016 High pressure will dominate our weather for the next several days, with dry conditions, and above normal temperatures for late September. A weak cold front is actually expected to drop across the area this afternoon, but lack of moisture or forcing should preclude any shower activity, or even much in the way of cloud cover.
855 PM CST Tue Jan 31 2017 Strong cold front moving into the region tonight with low clouds along with some light snow/flurries along it. Winds will gradually diminish in speed across the area tonight as high pressure approaches from the northwest. The high will settle in over the western half of the state on Wednesday, keeping conditions dry, but allowing for colder air to begin to move in. To start Wednesday night, the main 500mb low will be across Hudson Bay, with a ridge across the Pacific Coast of the continuous states up through Canada.
/26/ High pressure at the surface and quasi-zonal flow aloft will continue to overall maintain quiet conditions across the forecast area tonight into Wednesday afternoon. However, a weak cold front will try to sink south into the far northern quarter of the CWA late Wednesday afternoon. Then for Wednesday afternoon, with a gradual increase in clouds through the day, we should still warm pretty decently ahead of the boundary with highs ranging from the low to upper 70s.
439 PM MST Tue Jan 31 2017 21z surface analysis had cold front from Lake Superior to central WY with arctic boundary sinking south into MT/ND courtesy of Canada. 140kt jet streak over MT into the eastern Dakotas impinging on 850-700mb baroclinic zone in place across the CWA along cold frontal boundary. Previous updates addressed expected snowfall totals with highest amounts where weak upslope enhancement assists accumulations over the higher Black Hills.
523 PM CST Tue Jan 31 2017 The view from satellite imagery this afternoon shows the nation under the influence of a modest ridge-trough pattern, though the amplitude is low enough to locally result in a shallow northwest flow across the Central Plains.
The cold front is expected to stall just south of the CWA late tomorrow, providing a focus for additional light rain showers through the remainder of the work week.
Currently, strong northwest flow aloft with a closed upper low over the Hudson Bay and an upper level ridge over the California coast. Strong cold front near the Canadian border slowly dipping south clearly evident when looking at surface wind fields along with a large area of stratus along the FROPA. Cold front will continue southward tonight approaching the ND/SD border area around midnight local time.
A much stronger surge of cooler air will arrive overnight into Wednesday morning, shoving the front well south into Texas by evening, and bringing temperatures across Oklahoma and western north Texas back down closer to the seasonal average.
559 PM CST Tue Jan 31 2017 Gusty W/NW winds this afternoon will diminish to less than 10mph by evening as high pressure currently over the Plains builds eastward. Despite the presence of surface ridging, a weak upper-level disturbance will spread clouds and some very light precipitation into the area tonight. Low temperatures will drop into the lower to middle 30s. Morning upper air and moisture channel imagery shows flat ridge in the west US and flat trough approaching WV. By Sat, high pressure finally east of area, with southerly flow over IL.
Winds will gradually back as a cold front approaches, w/fropa at KMAF/KHOB ~ 17Z. Our attention turns next to a weak cold front expected to arrive during the day Wednesday.
Aviation weather should be quite decent through many hours of the twenty-four hour forecast as a cold frontal boundary slips very slowly south into the Mid South.
There is also a shot of colder air that moves into the area with this digging trough. Temperatures will cool and lake effect snow will get going, but looking at bufkit soundings, there is some drier air coming into the low levels with inverted-v soundings in the low levels which cut into the snow amounts a bit.
Expect more clouds over the area Wednesday as the cold front moves further south.
Locally Dense Fog and Dangerous Driving Conditions Possible Forecast still on track for mainly clear skies overnight as High Pressure Ridge lingers across the FL peninsula south of NE FL. Widespread lows in the lower/middle 40s inland and upper 40s closer to the coast. Multiple prescribed burns across NE FL have produced localized pockets of smoke in the lower levels of the atmosphere that may settle and mix with expected fog formation later tonight to produce smog with localized dense vsbys around sunrise. Jan 2017 was warmer than normal with both JAX/GNV recording their 19th warmest Jan on record with JAX Avg Temp at 59.
Ridging over Nevada will bring dry conditions through Wednesday.
942 PM CST Tue Jan 31 2017 9 PM CST surface map showed a pressure trof roughly parallel to and just north of the I-40 corridor. The cold front is expected to stall just south of the CWA late tomorrow, providing a focus for additional light rain showers through the remainder of the work week.
A cold front will make it's way through all the terminals Wednesday morning, shifting winds from west to north, then northeast. /issued 303 PM CST Tue Jan 31 2017/ The weak cold front that meandered south through the heart of the Texas Panhandle this morning has stalled across the extreme southern Texas Panhandle along our northern row of counties with little effect on the ambient weather. The approaching ridge axis to the west will help moderate the cooling trend the farther west and south you go across our CWA. Surface ridging will build in following a cold front on Wednesday.
Across the central ridges and Lower Susq Valley, the mean (and not so cold) westerly llvl flow will keep skies mostly cloudy with little in the way of precipitation. Highs will range from the lower 30s north to the mid 40s southeast.
649 PM CST Tue Jan 31 2017 Cold front sinking down the valley and approaching F-M area. Temperatures near zero are expected for the lows tonight around Grand Forks, with areas reaching 5 below zero along the Canadian border. More sunshine on Wednesday, but high temperatures will be about 20 degrees cooler than today.
718 PM CST Tue Jan 31 2017 Update to focus on band of snow along the cold front as it moves south across southwest and south central North Dakota this evening. Currently, strong northwest flow aloft with a closed upper low over the Hudson Bay and an upper level ridge over the California coast. Strong cold front near the Canadian border slowly dipping south clearly evident when looking at surface wind fields along with a large area of stratus along the FROPA. Cold front will continue southward tonight approaching the ND/SD border area around midnight local time.
A fairly stagnant upper level pattern persist across much of the region, as a broad trough remains over the northeastern CONUS with a ridge over the west coast. Not much change in the sensible weather pattern overnight, with the exception of an increase in low level clouds as the lower levels continue to saturate. With the steady flow of moisture, the lower levels will become saturated by Wednesday afternoon, as the boundary enters the area.
however parts of north GA may be a bit cooler with clouds and a few showers. Took a couple of degrees off the lows for tonight for most sites given dry air and mostly clear skies.
High pressure over the region will lead to above normal temperatures for most areas along with lighter winds through Wednesday. A Pacific storm system will bring snow to the highest elevations of the Sierra as well as breezy to windy conditions elsewhere for the last part of the week. Ridge currently over the area will hold through Wednesday morning before shifting east in response to trough over the eastern Pacific nearing the West Coast. Greatest snow accumulations will occur at the highest elevations but we will need to monitor the need for a possible Winter Weather Advisory for elevations down to Aspendell.
Meanwhile, troughing over Texas as part of the now sheared cutoff low from earlier in the week and a high pressure over Northern Florida wedges Central AL in an area of southwesterly flow with some isentropic lift ahead of this slow moving front. Low level southwest flow will increase overnight as a weak cold front approaches from the north. 58/rose Slight chance of rain will return by Wednesday afternoon across the northwest counties, as a slow moving cold front becomes stationary across the north.
A vigorous upper low is parked near the southern tip of the Baja Peninsula. High pressure over the Caribbean has pinched the southern branch of the jet stream, stretching from the upper low, eastward over the Florida Peninsula. The upper low off the tip of Baja will gradually break down and slide eastward.
942 PM EST Tue Jan 31 2017 A cold front has moved into the Mid-Atlantic.
944 PM EST Tue Jan 31 2017 Weak low pressure slowly moves east of Long Island tonight. Another area of low pressure moves across New England Wednesday.
837 PM CST Tue Jan 31 2017 The local area remains under nearly zonal upper flow with a broad upper trough over the Great Lakes. At the surface, weak high pressure has been building in from the southeast. With the steady flow of moisture, the lower levels will become saturated by Wednesday afternoon, as the boundary enters the area.
632 PM EST Tue Jan 31 2017 A cold front has moved into the Mid-Atlantic.
High pressure to the west will build in as the arctic front dives south across the upper Midwest tonight into Wednesday resulting in falling temperatures. However, if winds go calm late tonight, even if just for a few hours, with clear skies and high pressure building in temperatures could plummet to -15 in some areas. So, forecast should be considered a middle-ground with the possibility for slightly warmer or much colder temperatures overnight tonight.
Temperatures have risen across much of central Pa this evening, as surface warm front finally pushes through. The winds should keep temps from falling much, so have raised overnight mins closer to the latest LAMP guidance, which shows temps by dawn ranging from the u20s over the northern Mtns, to the low/mid 30s south. The focus for the first half of Wednesday will be over the Laurel Highlands, where a nearly saturated sfc-700mb ssw flow ascending the high terrain of Somerset/Cambria counties should result in a steady light upslope snow between dawn and early afternoon. However, with surface temps mainly above freezing, expect little if any accumulation. Highs will range from the lower 30s north to the mid 40s southeast.
10 PM EST Tue Jan 31 2017 High pressure ridge axis will extend from the Atlantic across east central Florida with airmass remaining quite dry and stable through Wednesday. High pressure ridge axis draped E-W across the local Atlc waters and central FL peninsula will keep favorable boating conditions in place.
Winds will gradually diminish in speed across the area tonight as high pressure approaches from the northwest. The high will settle in over the western half of the state on Wednesday, keeping conditions dry, but allowing for colder air to begin to move in. To start Wednesday night, the main 500mb low will be across Hudson Bay, with a ridge across the Pacific Coast of the continuous states up through Canada.
Models have come into better agreement with a weak cold front moving into the northern CWA late Wednesday evening.
632 PM EST Tue Jan 31 2017 Low pressure will lift northeastward from our area through tonight.
548 PM CST Tue Jan 31 2017 Winds will generally be light and variable prior to the arrival of a cold front early Wednesday morning. A back door cold front will slowly work its way south through the Panhandles region from NE to SW during the day tomorrow.
On Wednesday, a cold front will move south into our northern counties during the morning, reaching KABI around 17Z. Overnight temperatures will be a little warmer tonight, with lows ranging from the mid 30s across the I-10 corridor to the mid 40s along the I-20 areas. Cold front will move across West Central Texas on Wednesday, although for areas south of a San Angelo to Brownwood line the front will arrive after peak heating. In these areas, afternoon highs will climb into the lower 70s and lower 80s. Cooler temperatures across the Big Country with afternoon highs in the mid and upper 60s. 07 (Wednesday night through Tuesday) A cold front will move south of West Central Texas by late evening Wednesday.
Temperatures have risen across much of central Pa this evening, as surface warm front finally pushes through. The winds should keep temps from falling much, so have raised overnight mins closer to the latest LAMP guidance, which shows temps by dawn ranging from the u20s over the NW Mtns, to the low 30s elsewhere. The focus for the first half of Wednesday will be over the Laurel Highlands, where a nearly saturated sfc-700mb ssw flow ascending the high terrain of Somerset/Cambria counties should result in a steady light upslope snow between dawn and early afternoon. However, with surface temps mainly above freezing, expect little if any accumulation. Highs will range from the lower 30s north to the mid 40s southeast.
Winds will quickly diminish by early evening as an arctic cold front pushes southwest and low-lvl gradients weaken dramatically. No doubt it will be breezy in Arlington for much of the night, but the weakening 850mb gradient should cut off the high wind threat by early evening.
627 PM EST Tue Jan 31 2017 Elongated low pressure stretches across northern Michigan at the moment. Winds veer into the northwest behind the trough.
The upper low spinning between Baja and Old Mexico will not be a player for the forecast, as the moisture is limited and the system is too far south for any impacts. Models move this east through the period with the main trough axis well south of our area. Thickest fog as usual will mainly be over the central and northern areas along the Highway US 77 corridor.
Outside of this band, we will continue to see scattered snow showers drop across areas north of the MN River into the evening until a strong cold front currently crossing the international border sweeps all of this activity out of the area. However, those mostly cloudy skies will come with the coldest air we have seen since the 13th/14th of January, so look for the highs for the first calendar day of February to come around midnight, with temperatures in the afternoon remaining steady or slowly falling.
406 PM CST Tue Jan 31 2017 The view from satellite imagery this afternoon shows the nation under the influence of a modest ridge-trough pattern, though the amplitude is low enough to locally result in a shallow northwest flow across the Central Plains.
A southwesterly surface flow has developed over the area on the northwest quadrant of a ridge of high pressure that stretches from the eastern Gulf of Mexico through the FL peninsula. Full sunshine and occasional gusty southwesterly winds have resulted in warm temperatures ranging from the lower to mid 70s across most of the region. Lows tonight should generally range from the mid 40s to around 50 inland to the lower to mid 50s near the coast. Highs Wednesday afternoon are forecast to once again range in the lower to mid 70s across most locations.
Strong ridging remains in place across the southwestern CONUS this morning as the northeastern United States continues to dig out from a major winter storm.
Wind chill values are in the lower teens to lower 20s with a brisk north wind.
Surface wise, a sprawling continental area of high pressure is covering the eastern United States, most of the Gulf of Mexico and the Sunshine State.
Freezing Temperatures Tonight. Strong high pressure over the Plains will build into the se states today and tonight.
538 AM MDT Wed Mar 15 2017 Dry and benign weather is expected for the mid to late portion of the week as a low amplitude ridge axis moves eastward into the northern and central Rockies. Thursday will be even warmer across western Nebraska and the I80 corridor with highs near 80 around Scottsbluff and Sidney. Models show a weak cold front moving into Wyoming on Thursday. It will be noticeable more windy on Thursday ahead of the cold front.
However, there will be one more night of subfreezing temperatures for the eastern cwfa. Sat: Looks great with high pressure moving through the area.
Currently still seeing some light returns on radar as the cold advection and channeled vorticity squeeze out whats left of the low- level moisture. Tonight will be another cold one with sub-freezing temperatures expected areawide as dry and clear conditions combine with diminishing winds.
Thus, the high temperature forecast for today was lowered by a couple of degrees for many locations. MVFR ceilings were in and out of the TXK/ELD/MLU and SHV terminals with the higher ceilings noted at the TYR/GGG/LFK terminals. Sfc ridging has shifted east of the region and that will allow for a mostly ENE to E wind near 7-12kts through the day.
Sunny, breezy and warmer. Much warmer. Lee trough migrates out onto the high plains, accompanied by 850 mb temperatures +20C and higher. A quick check at the record highs for March 16th reveals that many are tough to beat in the lower 90s. Lee trough in the vicinity will keep the pressure gradient weak and the winds tame, generally near 10 mph or less.
Strong ridging at all levels will gradually weaken through the period but still maintain a tranquil synoptic pattern across the CWA.
A cold closed upper low over the northeast U. High pressure over the central U. Temperatures will moderate after this high moves by.
1058 AM MDT Wed Mar 15 2017 Satellite imagery pretty much sums up the forecast for the next 48 hours as a strong ridge of high pressure slowly builds northward across the Great Basin. Bigger concern with this building ridge is a rather prolonged stretch of above normal temperatures.
/issued 325 AM CDT Wed Mar 15 2017/ Upper ridge centered over the Western US will dominate weather pattern for the region as a large trough remains over the NE. The ridge will build east and flatten out as it does.
Mean ridging will deamplify as it moves east toward our area tomorrow. One minor perturbation on the northern edge of remnant mid-upper ridge will move through Thursday with little consequence.
As of 3 AM this morning the freezing line was down to the I-85 corridor and quickly pushing south. Most areas should be at or below the freezing mark by sunrise. Temperatures warm up during the day with plenty of sun but it will still feel cool out there as the cold high pressure system builds overhead the area. Winds will slack off after sunset and temperatures will quickly drop to and below freezing as we have yet another freeze across Central Alabama.
The high pressure currently centered over southern IA and northern MO is keeping the area under weak easterly flow. There is a greater likelihood that clouds will clear out of central KS this afternoon and warmer 850 mb temperatures spread eastward from the Rockies. Tonight the upper ridge progresses over the eastern Rockies, which will further enhance the warmer return flow. Thursday, an upper level ridge will move east across the plains. Given deep mixing the western counties will reach the lower to mid 70s while the eastern counties will be bit cooler with mid to upper 60s.
Freezing Temperatures Likely Across The Nature Coast Early A reinforcing front with a surge of colder and very dry air is moving south through the forecast area early this morning.
Expecting drier weather today with considerably warmer temperatures. An upper ridge will persist across the region before a cold front approaches on Thursday. Maliawco A warm front will continue to move through the area this morning. There has been a band of over-running precipitation to the east of the front overnight with a wintry mix that has included freezing rain. The precipitation will move to the east early this morning and high pressure and upper ridge will build into the area today. Will cancel freezing rain advisory with forecast issuance. Temperatures will be much warmer than recent days although lingering snow cover will limit warmth somewhat. Ridge moves to the east tonight with dry weather continuing.
At the surface, high pressure will drift south into the Mississippi River Valley later today. Models show low levels moistening during the day, resulting in more cloud cover across the area and thus slightly cooler temperatures, with highs in the lower and middle 70s.
An atmospheric river continues to feed rain into southwest Washington and northwest Oregon along a stalled cold front across the area.
624 AM CDT Wed Mar 15 2017 WV imagery this morning showing upstream ridge situated over the wrn CONUS with hefty Pacific moisture riding up and over into the cntrl Plains.
Thanks to clear skies and northerly winds around the high decreasing to less than 10mph, radiational cooling over the remaining snow cover is helping temperatures bottom out early this morning. Slightly warmer readings in the middle 30s are expected south of I-70 where little or no snow cover exists. The high will be overhead this evening, before shifting into the Ohio River Valley overnight. Once the high shifts further away, southerly winds will transport warmer air into central Illinois on Thursday resulting in total snow melt. High temperatures will top out in the lower to middle 40s. Models continue to show a low-level jet developing ahead of the next approaching storm system and its associated cold front Thursday night, with NAM depicting a 40-50kt 850mb jet from northern Texas northeastward into Missouri.
The high pres system wl persist acrs AR thru much of today, before heading EWD. Clouds wl be on the incrs tonight, helping to keep temps abv freezing in many areas. The exception will be over parts of ERN AR, where low will apch freezing toward daybreak on Wed. As the high shifts EWD, S/SELY winds will return to the state.
GOES Water Vapor/Upper air analysis has a massive closed low spinning over the eastern CONUS while a ridge of high pressure prevailed across the western CONUS. At the surface, high pressure was centered over IA with very light northwest winds across our forecast area. For today, high pressure ridge will drift across the region with mostly clear skies resulting. Warm air advection kicking in tonight through Thursday as the high moves east and low pressure pushes into the Plains. Look for clouds to be on the increase resulting from this warm air advection and isentropic upglide ahead of the low. Precipitation chances will be on the increase Thursday night as the low pressure area pushes into the region. Look for overnight lows in the lower/middle 30s, so could be a few slick/icy patches, especially north of I-94.
/issued 358 AM CDT Wed Mar 15 2017/ Expect a nice day for the forecast area as high pressure moves overhead.