Aikyam-Lab/Synoptic-Bench huggingface dataset:
A strong cold front is expected to bring gusty west winds Saturday and heighten wildfire concerns once again. The cold front will cross the Cascades Saturday morning bringing our region another round of gusty and dry winds.
202 PM MDT FRI AUG 26 2016 Challenging forecast today with the main branch of the upper level trough still hanging out over Nevada bringing increasing westerly flow over the state. A more diffuse trough is currently pushing through the eastern plains with mid level forcing seen on water vapor. It appears the mountain and plains convection are driven by two pieces of energy from the separate troughs with subsidence between over the lower foothills and urban corridor. Overnight some showers may persist over the mountains as the trough to the west will help to keep forcing over the area. Tomorrow models have the upper trough firmly entrenched into southern CA with weak SW flow aloft. Temperatures will be slightly warmer with highs reaching back into the 80s.
126 PM EDT FRI AUG 26 2016 A cold front will cross the region this afternoon.
208 PM EDT FRI AUG 26 2016 Upper level high pressure in place with hot and humid weather through the weekend. Current thinking is that High Pressure. latest guidance is warmer than previous numbers and have bumped highs up a degree or so.
251 PM MDT FRI AUG 26 2016 Current surface analysis shows low pressure over eastern CO, with trough stretching northward across eastern WY into MT. Upper level analysis shows broad trough across the Rockies and high plains, with numerous disturbances within the trough across the region. Temps are mostly in the 60s, with 50s across the higher Black Hills. Unsettled weather will continue through much of tonight, then dry and warmer weather will return for the weekend as the upper trough shifts east of the region on Saturday.
1224 PM CDT FRI AUG 26 2016 Region is in SW flow aloft with the area between high pressure along the E Coast and a broad low amplitude trough across the West. Cold front has stalled aligned roughly along I-70 as of early this mrng.
124 PM EDT FRI AUG 26 2016 Dry and less humid conditions can be expected today as high pressure shifts into the Great Lakes. Highs this afternoon are forecast to reach the low to mid 80s, with lows Friday night into the 60s.
309 PM EDT FRI AUG 26 2016 Cooler and drier air will filter in tonight behind a cold front. High pressure builds in out of Canada on Saturday with another warm day in the 70s and 80s.
345 PM EDT FRI AUG 26 2016 High pressure will build into the region tonight.
Dry northerly flow aloft has settled into Northern California this morning behind a weak upper level trough over SoCal. A few thunderstorms may form this afternoon along the high Sierra, mainly from Alpine County southward.
Broad upper level ridging will build into the southern U.
Synoptic Setup: Short term begins with the base of a trough moving through northeast Montana and running into Saskatchewan and northern Manitoba. The High pressure heat dome is beginning to reform over Nevada with the ridge running up into Washington and British Columbia. This afternoon and evening: trough will continue to mosey through the area and bring a few scattered rain showers and isolated thunderstorms until roughly sunset when activity should taper off very fast.
With a weak trof moving across the region, a slight chance for showers or thunderstorms will continue through the afternoon. Northwesterly flow aloft will become more westerly between 15Z and 18Z/Sat as a high pressure ridge building slowly eastward into our region is flattened by another weather disturbance diving southeastward over British Columbia.
A strong upper cyclone continues to dominate northeastern Canada this morning, generating broad cyclonic flow across much of the northern and eastern U. Meanwhile, broad upper level ridging persist across the Southwest U. At the surface, a cold front extends from the Southern Plains into the Tennessee Valley and Mid Atlantic states. As the surface airmass continues to modify with light easterly flow, expect slightly warmer conditions today than we saw yesterday. Lows tonight will be a bit warmer than recent day, with mid to upper 40s along the Nature Coast and low to mid 50s elsewhere.
632 AM EST Thu Feb 2 2017 High pressure will slowly build into the region through the end of the week. Ridging will continue to work into the area through the period.
/issued 318 AM CST Thu Feb 2 2017/ Current cold front has worked its way into central Mississippi leaving the Midsouth mostly cloudy with a zone of showers hugging the 850mb upper front along the TN/MS border. to the low 50s across the far south.
Westerly flow with a weak embedded upper level trough will move through today and tonight, depositing moderate snow in the mountains and highlands mainly with any latitude north of Pocatello. A stronger trough on Fri will bring heavier precipitation first to the Sawtooths and Wood River basin, then by Fri night to the ID-WY border region. At night, temperatures may not return below freezing on Fri night and the rain will continue.
405 AM CST Thu Feb 2 2017 Cool high pressure now building into the area, as a band of scattered showers sags slowly southward across our southern counties this morning.
High pressure ridge will remain extended across central Florida today, with winds remaining generally light. Highs will be slightly warmer than normal, reaching the mid to upper 70s, with skies mostly sunny over much of the area. (Previous Discussion) Continued good boating conditions as high pressure ridge over the waters will provide variable winds 5 knots or less, except in the southern waters where easterly winds will be up to around 10 knots.
356 AM MST Thu Feb 2 2017 Current surface analysis shows high pressure over MT and southwest Canada, with arctic boundary generally along the lee of the northern and central Rockies. Upper level analysis shows closed low over southern Hudson Bay, with trough covering much of southern Canada and the northern US. Slightly milder air will begin to push back into the area Friday as weak ridging moves across the region. Warmer air will continue to push into the area over the weekend, as weak upper ridge moves across the Northern Plains.
/issued 326 AM CST Thu Feb 2 2017/ A cold front is located this early morning from roughly the Arklatex to South Central Texas. Rua The cold front will continue to move eastward today, reaching the forecast area this afternoon, and out into the coastal waters this evening. Some drier and cooler air, with a brief period of northerly winds, will occur on Friday, behind the front.
After morning lows ranging from the mid 40s to mid 50s, expect highs in the low-mid 70s across our area this afternoon.
/Issued 258 AM CST Thu Feb 2 2017/ The cold front has clear the forecast area.
A frontal boundary to our north will move into the area through the day, then move south of the region Friday providing a slight chance of showers, along with some cooler temperatures.
At mid morning, a cold front was located south of Tn, with cool, dry high pressure moving in from the northwest.
526 AM CST Thu Feb 2 2017 Clouds will be on the increase to end this week as a high pressure systems builds to the Northeast and East of the region. The high pressure that will be in MO and parts of AR will be relatively slow to move out as a new but rather weak weather system will come off the Rockies.
Chattanooga Airport, TN 53 36 52 26 / 30 10 10 0 Knoxville McGhee Tyson Airport, TN 50 30 46 21 / 20 10 10 10 Oak Ridge, TN 49 29 47 22 / 10 10 10 0 Tri Cities Airport, TN 48 27 43 15 / 10 10 10 10.
Canadian high pressure is currently centered over the northern Plains extending south into the Central High Plains, and colder/moist air mass is in place. There is an indication in latest model soundings that layer at and above 900-1000ft below -10C, so any deepening of moist layer would result in predominately flurries or light snow rather than freezing drizzle. Low level saturation is more likely in our west where advisory is, and this would be region more supportive of light freezing drizzle.
Moisture wrapping around a low-level low pressure system centered over East Texas will blanket the Metroplex with MVFR ceilings much of the daylight hours. /ISSUED 359 AM CST Thu Feb 2 2017/ As of 3 AM, a cold front had moved through all but the southeastern-most part of the forecast area, extending southeast of a Quitman to Hearne to San Antonio line. Moisture is expected to wrap around a low pressure system over East Texas today. As is indicated by the high resolution models, this should result in an increase in cloud cover and some drizzle/sprinkles developing later this morning into the afternoon across the northeastern half of the region. Overnight lows will range from the lower 30s across the northwest to the mid 40s across the southeast.
950 AM CST Thu Feb 2 2017 The lower clouds in parts of the fa are expected to spread west some this morning. An even cooler day is expected today compared to yesterday with highs in the 30s and 40s.
Cool high pressure now building into the area, as a band of scattered showers sags slowly southward across our southern counties this morning.
631 AM CST Thu Feb 2 2017 This morning the cold front continued to move South into the Four State Area as was roughly along the Louisiana/Arkansas border and into Northeast Texas West of Texarkana and to near Idabel Oklahoma, and then draped South to Tyler and College Station Texas. This boundary was shallow and the shape shows the higher terrain of Southeast Oklahoma and Southwest Arkansas blocking the transport of the colder air into the area. Cloud cover looks to hold over the area even with high pressure in control due moisture above the surface remaining around.
1044 AM EST Thu Feb 2 2017 Currently - A pressure ridge extending across northern Florida is keeping gentle northeast breezes across the Florida Keys. Winds are remain backed over the Florida Bay due to the cooler shallow waters and residual land breeze off of the main land. February 2nd, Groundhog Day, on this date in Florida Keys weather history, in 1998, severe thunderstorms and two tornadoes caused widespread damage along the Florida Keys as a low pressure system moved northward over the southeastern Gulf of Mexico.
I amended the previous TAF because it does appear the low to mid level clouds will stick around.
648 AM EST Thu Feb 2 2017 High pressure over the region will keep a light and variable wind through the morning hours. The high does weaken tomorrow, as a cold front pushes into north Florida, and possibly Central Florida.
909 AM EST Thu Feb 2 2017 The high pressure over Florida has shifted slightly northward which has resulted in a slight backing of the winds to the east-northeast. With this high pressure, you can expect continued sunny skies and warm above average temperatures for west central and southwest Florida today. High pressure ridging across northern Florida will produce a predominant east-northeast flow across the coastal waters today.
SHORT TERM (Today through Friday): 500 mb ridging will be building back in place over the RGV as a trough axis clears the region to our east. A weak cold front will move through the region later today and tonight allowing for some weak CAA to move into the region from the north. do not anticipate a dense fog advisory for the lower RGV.
A weak cold front is being carried quickly eastward across the CWA on the heels of an upper level jet early this morning. A stronger Pacific cold front will move inland across the central California interior later tonight and Friday accompanied by more substantial precip, especially over the Sierra where a second jet max will again enhance orographic lift. The models forecast marginal convective instability in the wake of this second cold front Friday afternoon into Friday evening with CAPE approaching 500 joules/kg and 500 MB temperatures near -22C. By the time short wave ridging aloft moves into central California late Friday night, several inches of new snow will have fallen over the higher elevations of the Sierra.
Lowered visibility and ceiling obscuring the higher terrain should be expected for these locations, including for KSMN and KBTM.
A weak cold front will continue its slow push across the Southern Appalachian Region early this morning.
648 AM CST Thu Feb 2 2017 A cold front movg into ne TX bringing wshft to KTYR attm, and about to move into KGGG. /issued 631 AM CST Thu Feb 2 2017/ This morning the cold front continued to move South into the Four State Area as was roughly along the Louisiana/Arkansas border and into Northeast Texas West of Texarkana and to near Idabel Oklahoma, and then draped South to Tyler and College Station Texas. This boundary was shallow and the shape shows the higher terrain of Southeast Oklahoma and Southwest Arkansas blocking the transport of the colder air into the area. Cloud cover looks to hold over the area even with high pressure in control due moisture above the surface remaining around.
A slow moving cold front located over the Texarkana region will take its time getting here and then moving through the region late today.
Atlantic seabreeze this afternoon will keep the beaches a little cooler than inland locations.
The least amount of snow is across the southern Red River Valley, which showed up in the high temperatures from yesterday, as they were about 5 degrees warmer than anywhere else. This keeps the coldest highs over the Devils Lake region and the warmest highs around the Wahpeton Breckenridge area.
/issued 431 AM CST Thu Feb 2 2017/ SHORT TERM (Today through Friday): 500 mb ridging will be building back in place over the RGV as a trough axis clears the region to our east. A weak cold front will move through the region later today and tonight allowing for some weak CAA to move into the region from the north. do not anticipate a dense fog advisory for the lower RGV.
A cold front will move through S TX today bringing cooler temps in its wake. Latest model solns are cooler and a tad stronger with this front than previous runs. Based on MSAS analysis/trends and the high pressure rises, feel the faster/stronger/cooler soln is more likely. Cloudy cooler conditions are expected tonight,then isentropic upglide will increase through Fri leading to a cool wet day.
Ridging takes over Friday with a decent warm up in temperatures, though this may be muted by the new snowfall. With the expected ridging on Friday, highs will likely be in the 20s and 30s for most locations. The weekend will be mostly dry and warm for the lower elevations as the nearby mountains wring out the Pacific moisture passing overhead. Mountains locations will pick up a few inches of snow through the weekend, with the lower elevations seeing only a very slight chance of rain and snow showers.
A cooler airmass will spread across the area as northerly winds dominate with highs near climate normals with lower 60s over the Hill Country and mid 60s along the I-35 corridor. Clouds return tonight across most areas as a shallow cooler airmass remains near the surface and isentropic upglide takes control above that layer. Cooler temps are also expected with highs in the mid 50s to lower 60s.
85 inches with most of this water content noted in the higher relative humidity (RH) layers from the surface up to 850 mb or near 5000 feet. A slow moving cold front located over the Texarkana region will take its time getting here and then moving through the region late today.
638 AM CST Thu Feb 2 2017 High pressure remains in control across eastern Montana and the Dakotas this morning. This will force the low level clouds/flurries over the west central into the south central farther south today, and will slowly diminish the winds as the pressure gradient decreases.
The 7 am regional surface analysis showed an area of high pressure centered over northeast FL, and a strong temperature gradient along the northeast Gulf coastal waters. There was a weak, positive-tilt trough over much of the Gulf Coast, and it appears that the interaction of this feature and the aforementioned thermal gradient to our south was producing some showers over the FL Panhandle coastal waters.
938 AM CST Thu Feb 2 2017 Updated most forecast elements today to account for location of cold front now pushing across southeastern TX.
/issued 257 AM EST Thu Feb 2 2017/ Latest surface analysis across the southeast states shows frontal boundary over Tennessee valley but high pressure trying to hang on over the local area. Frontal boundary pushes south of the area for the end of the short term with cooler but still seasonable mild temps across the area wit low to mid 50s for North GA.
Winds will generally remain less than 15 knots and seas 3 feet or less through midweek as high pressure remains across the waters. Late in the week a cold front moves across the waters with high pressure behind it setting up an increased northeast to east flow for late in the week.
North to northeast winds will prevail into Tuesday ahead of approaching high pressure from the northern plains. 925 temps will be cooler with readings near 0c so expecting highs mostly in the 40s.
1017 PM EDT Mon Mar 20 2017 Low pressure and its associated cold front will push across the area tonight, with precipitation coming to an end. High pressure will build in for Tuesday and remain in control for midweek with dry conditions and cool temperatures. The high will slide off to the east by the end of the week with southerly air providing a warm trend. Expect clouds to hang on with abundant moisture in the low levels as winds become northerly. Low pressure along the central MS Valley will press east but looks to stay south of the area as it passes along northern Kentucky Tuesday. This will keep much of the precip associated with the low to the south and any rainfall chance will be south of the region Tuesday evening.
737 PM EDT Mon Mar 20 2017 A weakening cold front will pass through the region overnight. A stronger cold front will move through Tuesday night bringing sharply colder air for mid week. The southern convection seems to be associated with a weak wave that is forming on the tail end of the cold front. Models takes this weak low eastward and south of PA, with the unfavorable low level shear north of the system causing the cold front to basically fall apart as it enters the region. The HRRR brings some showers into the CWA, mainly between about 10PM and 4AM, keeping the areal coverage limited and the QPF on the low side. High pressure will begin to build in for Tuesday.
852 PM PDT Mon Mar 20 2017 A series of weather systems will bring cooler and more unsettled weather to the region this week. A trough of low pressure off the coast will continue to bring rain to the interior overnight. The front associated with the trough will move through in the morning with clearing behind the front expected over the valley. Ridge continues to shift eastward out of the region as moisture from a Pacific trough heads inland.
Overnight lows will be on the order of 10 to 15 degrees warmer than this past morning. Northwest flow aloft will remain stagnant across the area with high pressure remaining at control at low levels. The ridge axis will continue to shift eastward through the evening hours, with low level flow becoming southerly/southwesterly this evening. In addition to visibility restrictions, this will help keep overnight lows considerably warmer than last night, with low to mid 50s inland and upper 50s to low 60s along the coast.
811 PM EDT Mon Mar 20 2017 Low pressure and its associated cold front will push across the area tonight, with precipitation coming to an end. High pressure will build in for Tuesday and remain in control for midweek with dry conditions and cool temperatures. The high will slide off to the east by the end of the week with southerly air providing a warm trend. Low pressure along the central MS Valley will press east but looks to stay south of the area as it passes along northern Kentucky. This will keep much of the precip associated with the low to the south and any rainfall chance will be along the OH River and into northern KY Tuesday evening.
The cold front is slowly inching into southwestern OK this evening but will likely stall soon.
1129 PM CDT Mon Mar 20 2017 Latest surface analysis had the cold front south of the forecast area, extending from central Illinois to south central Kansas at 19Z. Models show an area of frontogenetic forcing developing north of of the Highway 36 corridor northward into Iowa. Lows tonight will range from near 40 along the Iowa border to the lower 50s south. Highs on Tuesday will be cooler than today with readings in the 50s amid clouds and northeast winds.
856 PM EDT Mon Mar 20 2017 A weak cold front will cross the region tonight. A stronger cold front will cross the area Tuesday night.
946 PM EDT Mon Mar 20 2017 High pressure dominates the Gulf of Mexico and Florida Peninsula, with area radars detecting no precipitation echos. The Pulley Ridge buoy reports 2 foot seas.
915 PM EDT Mon Mar 20 2017 Weak high pressure will slowly move east of the region overnight and Tuesday.
1214 AM EDT Tue Mar 21 2017 Weak high pressure will slowly move east of the region overnight and Tuesday.
721 PM EDT Mon Mar 20 2017 High pressure will prevail across the area tonight into Tuesday.
731 PM CDT Mon Mar 20 2017 At H5 closed low over the northeast Pacific with a ridge into Juneau. Trough from north central Canada into the Dakotas flattening the ridge over the lower 48 and then a closed low off the Atlantic Coast.
646 PM CDT Mon Mar 20 2017 High pressure has yielded sunny skies across much of the Northland this afternoon while a cold front stretched across far northern Ontario, southern Manitoba, and southern Saskatchewan. Skies should remain clear this evening ahead of the cold front and temperatures will gradually cool off. Temperatures will trend cooler behind the front. Lows tonight will bottom out in the low single digits in northern Minnesota and the upper teens to low 20s over central Minnesota and northwest Wisconsin. Normally cold areas may see temperatures dip below zero overnight, but the strong winds may keep the boundary layer mixed and temperatures a bit warmer than otherwise expected. Highs on Tuesday will reach the low 20s in northeast Minnesota to the low 30s over central Minnesota through much of northwest Wisconsin.
Large upper level low remains offshore with southwesterly flow over the region. Satellite shows several short waves rotating through the low. Cold front will cross the area Tuesday with more widespread rain.
1005 PM EDT Mon Mar 20 2017 The onshore flow along the coast is keeping temperatures more mild this evening but the dissipating sea breeze circulation will produce a very light to calm wind overnight as high pressure settles over the area. High pressure will build down across the area tonight, and then shift offshore into tomorrow with ridge axis near Lake Okeechobee. Conditions will remain dry Tuesday and will be a little warmer than normal with highs reaching the upper 70s to low 80s. High pressure over the area tonight and offshore into Tuesday, will keep winds variable and relatively light around 5 to 10 knots across the waters.
1145 PM EDT Mon Mar 20 2017 A weakening cold front will pass through the region overnight. A stronger cold front will move through Tuesday night bringing sharply colder air for mid week. To the north rain showers are becoming a little better organized over Ontario and the lower Gr Lakes. The HRRR still brings a slug of rain into the region mainly between about 11PM and 4AM, keeping the areal coverage limited and the QPF on the low side. High pressure will begin to build in for Tuesday.
With increasing the lows a tad, think fog will only be patchy in most places and did not mention at this time. But there is some weaker isentropic lift indicated around 290K and model soundings have a limited moisture layer just above the cooler surface late tonight. Therefore, will drop the overall confidence in the lower clouds developing, keeping some brief mention at MGM/TOI and removing it elsewhere. A cold front enters Central Alabama after 00z and slowly moves southward.
1029 PM CDT Mon Mar 20 2017 Persistent upper ridging with lgt south wind overnight.