Aikyam-Lab/Synoptic-Bench huggingface dataset:
120 AM EDT Mon Sep 18 2017 Weak high pressure through most of this week, providing warm afternoons and cool nights. Mainly quiet weather is expected today and tonight with weak high pressure remaining in the region.
357 AM PDT Mon Sep 18 2017 A little warmer today as low pressure weakens.
With deepening surface trof will see an increased west to southwest wind tonight that will help hold temperatures up and prevent fog development. Dry weather continues on Monday for the bulk of the CWA out ahead of an upper Pacific trough and surface cold front. The Pacific trough will move eastward on Monday, with showers and isolated thunderstorms possible first in our western areas late Monday afternoon. Then the cold front associated with the trof will bring a good chance of showers along with some frontal wind across the area Monday night. Expect snow levels to fall to 6500-7000 feet over our western mountains by late Monday night or early Tuesday, so there will be snow accumulation over the high terrain. Then a brief drying trend begins Tuesday night for the lower elevations.
The surface cold front will remain deep into the panhandles this afternoon, but begin to turn back north as a warm front by later this evening. Lows for early Monday do not look to be much warmer despite warm advection, however may be noticeably warmer in the southeast sections. The warm front will help scour out the low level moisture, bringing full insolation back and a bump back into the mid and upper 80s Monday afternoon. Stronger surface winds are expected Tuesday as low pressure develops across eastern Co/ NW KS in advance of the next approaching cold front. Given the warmer conditions and surface dew points approaching critical levels, red flag conditions could be met in the afternoon Tuesday.
416 AM EDT Mon Sep 18 2017 A persistent ridge of high pressure at the surface and aloft will maintain fair, warm and generally dry weather during the entire upcoming week, and likely through the weekend as well.
/issued 813 PM EDT Sun Sep 17 2017/ Another quiet evening as convection is held to a minimum by high pressure.
422 AM MDT Mon Sep 18 2017 The water vapor pictures are showing a weak upper trough moving across the CWA right now. The QG Omega fields show benign synoptic scale energy for the forecast area today and this evening, then upward motion moves in later tonight ahead of an approaching upper trough.
325 AM MDT Mon Sep 18 2017 An upper level trof of low pressure will approach the region on Monday.
/issued 826 PM EDT Sun Sep 17 2017/ The area is currently between ridging to the NW and Jose to the NE keeping a NE flow in place across the area becoming NW near the coast in the afternoon. As a result, temperatures will be a little cooler with lows in the upper 60s north to around 70 inland and the mid to upper 70s along the coast. High pressure to the NW and Jose to the NE will keep generally NE flow in place across the waters with winds turning NW near the coast in the afternoon. High pressure will build back in over the waters through the week as Jose lifts off to the N, with moisture returning across the area.
655 AM EDT Mon Sep 18 2017 Weak low pressure in the upper atmosphere will keep a slight threat of afternoon showers around the region today.
225 AM CDT Mon Sep 18 2017 219 AM CDT High pressure will build across the western Great Lakes today while the cold front that passed over the region yesterday settles over the Ohio Valley. East to northeast flow will help temper afternoon highs today, especially near Lake Michigan where onshore flow will keep temperatures only in the low 70s. Much better chances will be well to our west on the nose of the low level jet over the mid Missouri Valley overnight. Deubelbeiss 219 AM CDT Expect a warm pattern throughout much of the extended time frame as an increasingly amplified ridge takes hold over the Great Lakes and eastern CONUS.
Otherwise, ridging across the Tennessee valley with mid-level warm layer capping convection over the area. Ridging will also keep winds light and less than 10kts.
405 AM CDT Mon Sep 18 2017 West to southwest flow is over the area with weak ridging aloft.
203 AM EDT Mon Sep 18 2017 Weak low pressure in the upper atmosphere will keep a slight threat of afternoon showers around the region today.
300 AM MDT Mon Sep 18 2017 Low amplitude upper ridging will develop over the forecast area today as one upper trough moves off to the east and another, stronger trough develops over the west coast. At the surface, a tightening sfc pressure gradient between high pressure to the east and a deepening lee side trough to the west will produce breezy to windy conditions across much of the forecast area this afternoon. The weather today will be dry, warmer and breezy to windy as the 850-mb temperatures rise to the lower 20s Celsius over northeastern Wyoming. A strong upper trough will affect the forecast area on Tuesday. However, models still differ on the timing of a cold front that ultimately will move through the region by Tuesday night.
Otherwise, high temperatures today should be a little warmer than Sundays.
Cold front is departing across eastern Lake Huron. Trailing high pressure is building into nw WI. The high will move slowly east across northern Lake MI and eastern upper MI today. Weak warm advection will resume tonight as the high lifts ne. Radar (and walking outside) indicates an area of associated drizzle over the high terrain of northern lower.
However, a surface pressure trough over eastern New Mexico will enhance the low level convergence by this afternoon. A low level theta-e ridge will be jetting up through the I-27 corridor this afternoon.
637 AM EDT Mon Sep 18 2017 Weak high pressure through most of this week, providing warm afternoons and cool nights. Mainly quiet weather is expected today and tonight with weak high pressure remaining in the region.
1026 PM PDT Sun Sep 17 2017 Wet, cool and breezy fall-like weather can be expected over the Inland Northwest for the upcoming week as an upper level trough moves over the region.
As Jose moves away, a high pressure will build southward and locally at the Keys, the pressure gradient will remain weak for the next few days, keeping light and variable winds.
406 AM EDT Mon Sep 18 2017 A weak cold front will move into Ohio today, bringing a chance of showers and thunderstorms.
431 AM CDT Mon Sep 18 2017 Water vapor imagery shows the upper ridge axis shifting east this morning with convection firing along a weak surface boundary still northwest of our region across central Oklahoma southward into extreme north Texas. This boundary is not expected to shift much more in our direction before slowly retreating northward as a warm front later today. The upper ridge axis will re-orient itself back across the region by late week and will keep daytime temperatures in the lower 90s for nearly all of the region.
For Today and tonight, ridging will remain across the Tennessee valley with mid-level warm layer capping convection over the area.
303 AM CDT Mon Sep 18 2017 Weak, diffuse cold front now over Arkansas will wash out today with southerly low level flow re-establishing itself over the forecast area. Vigorous trough begins to dig across the northern Rockies on Tuesday, while zonal to slightly southwesterly flow continues across the local area.
Temperatures will climb into the mid to upper 80s across most of the area, with the cumberland Plateau in the low 80s. Showers and thunderstorms will pop in and out of the forecast throughout the work week as we keep weak high pressure influences around the Tennessee Valley.
606 AM EDT Mon Sep 18 2017 High pressure will remain over the area into Tuesday while Hurricane Jose approaches southeastern New England.
Synoptic Setup: Short term begins with a Ridge over Wyoming, eastern Montana, and Saskatchewan and a large trough over the coasts of British Columbia and the Pacific Northwest. Today: Ridge will exit eastern Montana allowing a clear to partly cloudy morning to turn into a mostly cloudy afternoon with mild to warm and dry conditions. Tonight through Tuesday: Ridge axis exits into the Dakotas by midnight allowing the trough to the west to gain influence. Highs by Tuesday should settle back into the 60s or about 10 degree cooler than today.
For Monday, expect generally tranquil, dry and warmer conditions over the forecast district as dry zonal to southwesterly upper flow develops over the forecast district, which will allow maximum temperatures to climb above seasonal averages by Monday afternoon. Increasing westerly flow will lead to a breezy to windy conditions across the higher terrain, with the downslope flow developing lee troughing across the I-25 corridor, leading to breezy conditions developing overnight along and west of I-25. Lee trough kicks out across the eastern plains through the day Tuesday, with breezy south to southwest winds of 15 to 30 mph expected across the lower elevations Tuesday afternoon.
323 AM EDT Mon Sep 18 2017 A weak cold front over Indiana will move east over the local area and become stationary by this evening. The front will push to the south Tuesday as high pressure begins to build back over the region from the north. The high will then dominate the weather the second half of the week. The lower atmosphere will continue to moisten in advance of the front.
With the light steering flow in place across the region and the area being on the northeastern edge of a ridge of high pressure over the Southwestern Gulf of Mexico, it appears that afternoon showers and thunderstorms are unlikely. Afternoon highs will be in the lower 90s.
The main forecast topics are: precipitation amounts, the first snow of the season at Crater Lake National Park, and the huge dent in fire season from the cooler temperatures, high humidities, and precipitation. A cold front looks to be near the Rogue Valley at this time since the pressure began to rise in the past hour at Sexton Summit but hasn't risen yet at Medford. West to northwest winds will become gusty especially east of the Cascades today behind the cold front.
258 AM MDT Mon Sep 18 2017 Drier and warmer air will be over the area today and tonight. Temps will be much warmer today, with highs in the 80s acrs the southeast plains, and in the 70s in the San Luis Valley and Upper Arkansas River Valley. Breezy southwest winds are expected over the higher elevations today and portions of the San Luis Valley.
1154 PM MDT Sun Sep 17 2017 As a weak trough exits the region to the east, carrying some remnant showers with it, drier westerly flow with another weak embedded trough will pass over the area this evening. Almost nothing in the way of precipitation is expected from this second trough, just some mid and hi cloud over the northern half of the area. Monday should see dry westerly flow aloft and warmer temperatures from abundant sunshine, followed by a cool clear night. A broad trough over the Pacific Northwest will move east over the northern Rockies and drag a cold front across the northern UT and CO borders Tuesday afternoon and evening.
400 AM EDT Mon Sep 18 2017 Does not appear to be much to the forecast today as there is an overall lack of significant moisture and instability as a 700-500mb ridge up the TN valley and the west side of the Appalachians keeps things quiet across the area. The upper ridge flattens for Tuesday with some moisture increase, most so for the far northern counties as this area could be affected by a weak short wave.
351 AM EDT Mon Sep 18 2017 High pressure will remain over the area into Tuesday while Hurricane Jose approaches southeastern New England.
154 AM EDT Mon Sep 18 2017 Weak low pressure in the upper atmosphere will keep a slight threat of afternoon showers around the region today.
200 AM EDT Mon Sep 18 2017 Weak high pressure centered over the Northeast will extend south down the Appalachians into the Mid Atlantic through Tuesday. While this mixing should preclude widespread fog development, NAM fcst soundings suggest indicate the low-level moisture along the coast spreading inland and lowering with time. Otherwise, we will continue to see in persistence in terms of overnight lows, ranging from 63-64 in the typically cooler spots to upper 60s SE. Clouds will begin to recede on Monday night from southwest to northeast and temperatures will dip into the low to middle 60s.
142 AM EDT Mon Sep 18 2017 A weak cold front will approach the region tonight and stall in western Ohio on Monday and weaken. Another weak cold front will push into the area on Tuesday. This will help keep temperatures a little warmer across the west with lows ranging from the mid 50s in the east to the lower 60s in the west. A weak cold front will slide into western counties on Monday and stall. Cold front will continue to weaken tonight through Monday as it moves into a less favorable airmass over Northwest Ohio. Under partly to mostly sunny skies, highs in the low 80s can be expected.
338 AM EDT Mon Sep 18 2017 Weak high pressure through most of this week, providing warm afternoons and cool nights. Mainly quiet weather is expected today and tonight with weak high pressure remaining in the region.
128 AM EDT Mon Sep 18 2017 A weakening cold front will move into the area tonight into Monday, becoming stationary by Monday night. High pressure will build back across the region Tuesday through the end of the week. Scattered showers and thunderstorms upstream along the axis of deeper moisture ahead of the cold front are gradually decreasing in coverage. Weakening cold front will move toward the region tonight and will impact the weather on Monday. Warmer tonight and MOnday night with the higher moisture levels. Highs Monday in the lower 80s. High pressure will be in control for mid week. High pressure at the surface and aloft should remain in place Thu night thru Sun to keep conditions dry.
434 AM MDT Mon Sep 18 2017 Low amplitude upper ridging will develop over the forecast area today as one upper trough moves off to the east and another, stronger trough develops over the west coast. At the surface, a tightening sfc pressure gradient between high pressure to the east and a deepening lee side trough to the west will produce breezy to windy conditions across much of the forecast area this afternoon. The weather today will be dry, warmer and breezy to windy as the 850-mb temperatures rise to the lower 20s Celsius over northeastern Wyoming. A strong upper trough will affect the forecast area on Tuesday. However, models still differ on the timing of a cold front that ultimately will move through the region by Tuesday night.
/issued 406 AM CDT Sat Apr 22 2017/ An upper level low pressure system over southwest Missouri early this morning will continue to push slowly southeast today and tonight. Areas across northeast Mississippi which remain south of the front should warm into the 70s for highs today, with the remainder of the region to the north of the front much cooler, mainly in the 50s to lower 60s. In addition, deep layer shear in advance of the upper low should range from 30-40 kts across the near surface warm sector. The upper low will drift southeast across the Mid South tonight and Sunday. Much cooler temperatures will also continue through Sunday and Sunday night with highs in the 60s and lows mainly in the 40s.
We still expect storms with the potential for severe wind gusts/hail to develop ahead of a cold front over Central MS. Latest analyses indicate the cold front is approaching northwest portions of the ArkLaMiss with winds having shifted at El Dorado and Pine Bluff, AR. Additional storms will redevelop this afternoon and move eastward through early evening as a cold front pushes across the area.
1007 AM EDT Sat Apr 22 2017 Atlantic high pressure will prevail through tonight.
22/12Z upper air plots depicted a ridge axis that extended from southern California northward into Idaho. Meanwhile, a cold front was east of this forecast area, and was near the Rio Grande river in southern New Mexico. Sunny skies will occur today as the upper ridge axis moves eastward across the area. The upper ridge axis, which extended from central Nevada to off the northern Baja coast this morning, will move across the state today resulting in slightly warmer daytime temperatures.
Tonight winds will start to die down and skies will begin to clear as high pressure moves over the forecast area. Strong radiational cooling will lead to temperatures approaching freezing. With clear skies and returning south winds temperatures will be back in the low 70s.
Todays max temperature should be reached by early afternoon, then a cooler air mass moves in this afternoon. A low pressure system well to our northwest will drag a cold front across our area today. It will be cooler and cloudier in all areas, however.
Did add a mention of afternoon showers to the northern James River Valley ahead of the cold front per the 12 UTC RAP/HRRR iterations. Current surface analysis places high over the central plains, while to the north a cold front is lined up along the international border. Upper level analysis places weak high over South Dakota with ridge over the western United States. main focus will be aforementioned cold front which will gradually settle through northern North Dakota, pushing into central portions of the state late afternoon into the evening. Scattered rain showers will eventually develop along and behind the front, with some snow developing later tonight as cooler air works in. With cooler air pulling into the system, a conversion towards snow possible late.
A strong cold front will advance across the area this afternoon and early evening. Regional 88Ds show scattered shower/few thunderstorms along a cold front stretching from nern TX across srn AR. A ridge of high pressure is moving east across the Atlantic and away from our region while a cold front and short wave is pushing east across Texas. A warm and moist south flow will continue through the morning to afternoon hours between the departing ridge and advancing front. The front will clear the area tonight and a much cooler air mass Will move in.
1059 AM CDT Sat Apr 22 2017 Satellite imagery showing an extensive swath of clouds from the Southern Plains up into the Northeastern US behind the cold front. Cooler highs are also expected to the south while the northern half of the state sees some more sunshine.
An approaching upper level trough will bring cooler weather to the district today along with increasing clouds. These temperatures are generally 1-4 degrees warmer than those 24 hours ago.
1148 AM CDT Sat Apr 22 2017 The late morning sfc analysis reveals that our cold front extends from just W of a BQP, to RSN, to just N of IER, to near Many, to just NW of JAS and a IAH line as of 1630Z. However, frontal forcing remains weak, as does the forcing aloft beneath the initial ejecting trough extending from Srn MO along the Lower MS Valley such that any convection developing along/just ahead of the front late this morning/early afternoon should remain widely sct at best and shallow. However, low chance pops seemed warranted through the afternoon mainly along/S of I-20 this afternoon with the arrival of the H700 trough and associated theta-e axis, although QPF amounts will remain light.
Sunday will be cooler, breezy, and showery behind a weak cold front. Today through Sunday night: An elongated trough of lower pressure is pushing towards the coastal areas of WA and OR early this morning. The trough will take on more of a negative tilt this afternoon, which will produce more favorable dynamics aloft across western WA and into the east slopes of the northern Cascades. However, there will be additional lift along a cold front that is progged to push across extreme eastern WA late this afternoon and into the ID Panhandle by the early evening. More cloud cover with a greater coverage of showers on Sunday should result in cooler temperatures for much of the region with highs back down into the 50s and low 60s.
In the low to mid levels of the atmosphere, a trough of low pressure will move eastward through the Yucatan Channel this afternoon. The combination of the aforementioned trough of low pressure over the Yucatan Channel and the exceptionally moist air mass in place will be responsible for rain chances just below 100 percent this afternoon.
519 AM MDT Sat Apr 22 2017 Latest upper air analysis depicts a closed low over Eastern Kansas. Behind the closed low a ridge was building in from the northwest. Winds may peak in the late morning, then decrease slightly in the early afternoon then increase again in the mid/late afternoon following the trend of the winds in the low level jet. Along with the winds will be warmer temperatures. The breezy south winds will cause lows to be warmer than tonight.
Regional 88Ds show scattered shower/few thunderstorms along a cold front stretching from nern TX across srn AR. A ridge of high pressure is moving east across the Atlantic and away from our region while a cold front and short wave is pushing east across Texas. A warm and moist south flow will continue through the morning to afternoon hours between the departing ridge and advancing front. The front will clear the area tonight and a much cooler air mass Will move in.
Chattanooga Airport, TN 81 57 64 52 / 90 90 80 30 Knoxville McGhee Tyson Airport, TN 77 56 60 50 / 80 90 90 40 Oak Ridge, TN 75 56 61 51 / 90 90 80 40 Tri Cities Airport, TN 74 53 58 48 / 90 90 100 60 NC.
/issued 402 AM CDT Sat Apr 22 2017/ Unseasonably cool weather is expected today and Sunday in the wake of a strong cold front, though the break from the heat will be short-lived.
The overall theme for today is high pressure will hold on another day before the next storm system affects the area. Upper-air analyses showed a ridge over the eastern CONUS and a trough over the central Plains. Although the deep-layer ridge over our forecast area will be breaking down today, the approaching trough will still be too far away for any appreciable Q-G forcing. High temperatures will remain above average, with highs in the lower to mid 80s in FL, and mid to upper 80s in south Al and GA.
High pressure will deliver light winds through tonight.
Current surface analysis places high over the central plains, while to the north a cold front is lined up along the international border. Upper level analysis places weak high over South Dakota with ridge over the western United States. main focus will be aforementioned cold front which will gradually settle through northern North Dakota, pushing into central portions of the state late afternoon into the evening. Scattered rain showers will eventually develop along and behind the front, with some snow developing later tonight as cooler air works in. With cooler air pulling into the system, a conversion towards snow possible late.
A low pressure system well to our northwest will drag a cold front across our area today. It will be cooler and cloudier in all areas, however.
1057 AM EDT Sat Apr 22 2017 Hydro A large area of high pressure located in the Upper Plains will track slowly eastward into the Great Lakes Region through the weekend. A weak cold front will try to slip down from the north Sunday night. A better shot for rain arrives for the middle part of the week when a low pressure system tracks in from the southwest. Models are in relative agreement in tracking a high pressure system in from the west through the weekend. A weak backdoor cold front slips down from the north Sunday night.
731 AM EDT Sat Apr 22 2017 Atlantic high pressure will prevail through tonight.
Elsewhere, dry and very warm temperatures will prevail, with highs in the upper 80s to near 90 inland, and the low 80s along the beaches.
1246 PM EDT Sat Apr 22 2017 Low pressure tracking toward the Southeastern United States will continue to fuel rain chances over the ridges for the start of the new week. The northern trough axis is projected to complete passage across the region tonight and push rain potential southward while cool and dry high pressure supports overnight lows a few degrees under the seasonal averages. This scenario should confine rain chances to the I 68 vicinity, and over the ridges and eastern CWA periphery during the period.