Aikyam-Lab/Synoptic-Bench huggingface dataset:
1234 PM EST Mon Jan 2 2017 A low pressure system approaching from the southwest will bring widespread showers to the area tonight. Weak disturbances following the low will allow shower chances to continue Tuesday and Tuesday night.
316 PM CST Mon Jan 2 2017 19z surface analysis shows a warm front, enhanced greatly by the MCS over AL into southern MS, situated from near Columbus GA west thru Montgomery AL to just south of Jackson and Vicksburg MS. The warm front to our south may lift northward into central AL this evening, but may not reach north AL at this point. Further north, the upper trough axis over the ArkLaTex will eject negatively tilted tonight producing strong UVV across the mid south and TN valley. Low level helicity values will increase due to stronger veering as the low advances closer, so will not totally rule out an isolated tornado threat, but this appears to be a very low threat at this time due to limited low level CAPE.
High pressure over British Columbia will push cold air into Western Washington this week, while easterly flow aloft keeps the weather dry. Highs will be in the lower to mid 30s, with lows in the teens to 20s.
Snow showers in most areas this morning due to upper low over the nwrn states. Snow showers should gradually decrease today on the Idaho side, but continue on the Oregon side as the upper low, currently on the WA/OR coast, moves slowly westward into the Pacific.
Steadier rain is forecast for tonight and tomorrow with approaching low pressure. Downsloping will contribute to better conditions immediately west of the ridges. Cold front will shift east of the region late Tuesday, with resultant cold advection changing what precipitation is left from rain to snow with minimal accumulation anticipated.
The main area of concern for this event remains across the southern third of the state where the warm front has become well established over the past several hours. The greatest tornado threat should remain along and southeast of the I85 corridor as it is likely that the warm front will be limited in its northward progression. The warm front may rebound back northward up to around the I85 corridor.
335 PM EST Mon Jan 2 2017 Widespread rain is expected through tonight as a warm front advances slowly north through the area.
temps have warmed into the upper 50s to lower 60s on the Caprock with even warmer temps in the Rolling Plains. See no reason to abandon our recent strategy of favoring the ECMWF's phasing of troughing from southern Canada with energy currently atop the Oregon coast.
1135 AM EST Mon Jan 2 2017 A low pressure system approaching from the southwest will bring widespread showers to the area tonight. Weak disturbances following the low will allow shower chances to continue Tuesday and Tuesday night.
Given the orientation and weak nature of this frontal boundary and zonal flow pattern building back over the area aloft, not expecting much in terms of cooler air, with highs Tuesday still expected to reach the low to mid 70's across the area.
Back edge of the rainfall with drier and cooler air associated with the trough axis of upper level trough moving into East Texas and Southeast Oklahoma.
The overall event doesn't look very impressive with a dampened mid level trof and marginal low level moisture. The strongest WAA is expected across the eastern zones and this is where the highest pops are located.
309 AM MDT Wed Apr 12 2017 Weak upper ridging sits across the western to central CONUS at this time. Upper trough across the Pac NW and northern Rockies will bring active SW flow to the region. A cold front crossing the CWA will bring slight chance pops and cooler temps across northeast WY and far western SD.
This morning's surface analysis shows that the remnants of yesterday's cold front extends along the immediate Gulf Coast. The surface boundary is forecast to lift northward through the day as high pressure begins to build into the area. Cloud cover will decrease late this afternoon as the high builds in and clear skies are expected tonight. The combination of clear skies and light to calm winds should allow for cooler temperatures and the possibility of patchy fog again Thursday morning.
335 AM PDT Wed Apr 12 2017 A low pressure system moving inland along the West Coast will bring a cooling trend through Thursday.
An upper level trough will push across the CWA this afternoon while a cold front at the surface slowly sinks southward and weakens before reaching the CWA. High temperatures will remain above average today, with highs in the low to mid 80s.
340 AM CDT Wed Apr 12 2017 A weak cold front passed southeast of the Mid-State overnight, and by 300 am light northerly surface flow was observed area-wide.
A mean low amplitude upper level ridge will remain over the area through Wed night. An upper level trough currently over the West Coast spreading all the high level clouds toward and over our region will move east tonight and deamplify as it moves through the mean ridge.
A large upper level low off the coast will dominate our weather through the short term. Showers today will be confined mostly to the higher terrain of the north and west. A cold front accompanying the upper system will push through the region late tonight and Thu morning, providing the best chance for precipitation at lower elevations. After moderate warming today, with highs 5 to 10 degrees above normal, and a mild night tonight with clouds and winds minimizing radiational cooling, the cold front will change things Thursday. Snow levels will rise to 7500-9500 feet tonight, before falling rapidly behind the cold front tomorrow.
335 AM CDT Wed Apr 12 2017 Surface analysis showing high pressure centered over northern IL with mostly clear skies across our area. For today, warm air advection/isentropic upglide in advance of a mid- level trough pushing east through the Plains will increase cloud cover though the day along with increasing shower chances through the afternoon. Otherwise, looks like a mild day as temperatures top off in the middle 50 to the lower 60s. Showers move back into the area after late Thursday night south of I- 90 as another mid-level wave and developing surface warm front push toward the area from the Central Plains.
349 AM EDT Wed Apr 12 2017 High pressure has moved east out of the area as the frontal boundary moves into NW GA this morning. H5 ridge builds over the region through the weekend.
336 AM CDT Wed Apr 12 2017 Deep layer ridging will build over the area today resulting in increased subsidence throughout the atmosphere. With a sinking airmass in place, temperatures will easily climb back into the lower to middle 80s by this afternoon. The deep layer ridge axis will be directly over the Gulf South tomorrow resulting in continued warmer than average temperatures and mostly clear skies.
432 AM EDT Wed Apr 12 2017 Rain showers will be ending over northeast Pennsylvania and portions of south central New York this morning as drier and cooler air moves in behind a cold front. High pressure will likely dominate the region through the rest of the work week with mild temperatures and dry weather.
344 AM CDT Wed Apr 12 2017 A very active weather pattern is expected today and tonight as a southern stream trough approaches and moves over the forecast area. More thunderstorm activity will be possible Thursday afternoon further west across the mountains and immediate adjacent plains due to strong heating along the higher terrain and upslope flow.
315 AM CDT Wed Apr 12 2017 Passage of an 850 hPa ridge through the area overnight has allowed winds to become southwesterly at that level which will bring a warming trend to the area today. An increase in 850 hPa temps of about 3 to 4 degrees C will translate to surface temperatures about 10 degrees F warmer than yesterday, with afternoon highs in the middle 70s across most of the area. Boundary will sag slightly south into north central MO on Thursday, and it's not out of the question that it could spark off a few showers or storms across that area before retreating as a warm front Thursday evening.
Weak trough will wrap up this morning, then the next upstream low begins to move onshore in the Pacific Northwest. with the cold front still way behind. This is somewhat slower than previous thinking, and this may keep temperatures on Thu warmer than previous forecasts. In the wake of this front, more precipitation is expected Fri and Fri night as weak troughing continues. Afternoon highs will still get warm enough to melt quite a bit of the accumulation on Fri, but more will accumulate Fri night as temperatures get below freezing everywhere.
/Issued 654 PM CDT Tue Apr 11 2017/ 00z Issuance: VFR conditions expected overnight but low clouds will be on the increase as we near sunrise, with the lowest cigs expected across the southern and eastern Panhandles including AMA between 12z and 18z Wednesday. Showers and some isolated thunderstorms will be moving in mainly during the afternoon hours off the higher terrain out west.
Quiet conditions across the region continue as deep layer ridging remains entrenched over portions of the east coast. Expect overnight lows a few degrees warmer than last night as a result, with temperatures in the upper 50s to low 60s. A weak upper level trough will slowly move east across the local area Wednesday with upper ridging building back in on Thursday. Highs will be in the low to mid 80s and lows in the upper 50s to lower 60s.
Northerly winds return Wednesday behind the passing cold front. The upper low will pass through Wednesday morning into Wednesday afternoon with a few hires models popping a few showers between 12- 18z. The cold front won't impact highs much and with the help of clearing skies, highs should be in the upper 70s/near 80 with lows in the lower to middle 50s. Weak high pressure builds in Wednesday night through Thursday night as ridging aloft starts to build in as well. A weak upper low starts to develop over the midwest Thursday which will stretch a vort max out ahead of it. South-southeasterly flow returns on Thursday along with a slight warming aloft which will help push highs into the lower 80s.
There are some limiting factors however, there will be a weak ridge aloft which will generally act to suppress activity due to subsidence. Also, the lower to mid levels, from around 700mb to 400mb, remain dry.
This energy is expected to pass over the forecast area later tonight into Thursday, and into an upper ridge over the East Coast. With subsidence from the upper ridge competing against the upper dynamics overnight, am expecting any precip overnight to be confined to mainly western-most portions of the forecast area to over the Lower Mississippi River Valley. With increasing cloudiness combined with subsidence from the East Coast upper ridge limiting overnight cooling, lows tonight a bit above seasonal are expected. Also, with the decreasing cloudiness and a lack of cooler air moving over the forecast area, temps above seasonal again expected, with highs ranging from around 80 along the coast to low 80s inland.
312 AM EDT Wed Apr 12 2017 A weakening cold front will move into the Midlands this afternoon and move south of the CSRA overnight. High pressure will be over the area this weekend.
358 AM EDT Wed Apr 12 2017 High pressure will build into the area today and move off to the east tonight.
The low ceilings could last through 12/18Z, but especially at KMAF, KHOB and KINK.
For today, upper level ridging will be building in from the west in the wake of the departing disturbance, but the frontal zone will basically be stalled across the region (and perhaps lift a little north by late in the afternoon).
Partly cloudy and warmer today. Much cooler on Thursday with rain and snow returning.
608 AM EDT Wed Apr 12 2017 Quiet weather is expected for today and tonight as a ridge of high pressure settles across the region. High temperatures today will range from the upper 50s to mid 60s, although cooler near Lake Michigan due to a lake breeze.
The weak frontal boundary associated with the upper level trough axis will push through Central AL today. However, as we go into the afternoon hours, the upper level trough axis and vort max will be moving through. 1000-850mb thickness values are forecast to be around 1390m, which would support highs in the low 80s.
651 AM EDT Wed Apr 12 2017 High pressure will build into the area today and move off to the east tonight.
Chattanooga Airport, TN 80 55 81 58 / 10 0 10 0 Knoxville McGhee Tyson Airport, TN 77 52 78 57 / 10 0 10 0 Oak Ridge, TN 77 52 80 57 / 10 0 10 0 Tri Cities Airport, TN 75 48 77 50 / 10 10 10 10.
406 AM EDT Wed Apr 12 2017 Quiet weather is expected for today and tonight as a ridge of high pressure settles across the region. High temperatures today will range from the upper 50s to mid 60s, although cooler near Lake Michigan due to a lake breeze.
606 AM EDT Wed Apr 12 2017 A cold front slicing through central PA early today will push gradually southeast across the rest of the state this morning.
338 AM EDT Wed Apr 12 2017 Dry conditions will prevail until the next low pressure system impacts the region this weekend. Daytime max temperatures will be slightly cooler. High pressure will support dry conditions and a warming trend in temperatures through the period. Minimal change made in the extended with only minor adjustments in warm and cold frontal timing.
Though weak, the sfc trof will none-the-less advect gradually increasing southerly moist advection thru Thu Night. The shearing of the initial wave would prevent a cold front that'll develop from the Northern to the Northwestern Plains from making sufficient SE progress with the boundary stalling as it nears the Nebraska/KS border Thu Morning. The cold front should make further SE progress, perhaps reaching the KS/OK border Sun Morning. KED The Front Range sfc trof will enable Southerly winds to increase considerably today, but gradually increasing moisture should keep grassland fire danger indices in check for most areas.
In fact, based on the satellite trends, locations toward the Ohio border will likely even start the day clear, as they are closest to the Anti-Cyclone. Main moisture axis/850-700 MB Theta-E Ridge seen sneaking into southwest Lower Michigan, and then folding over in a west-east fashion into the Northern Ohio Valley.
Cloud cover will steadily decrease through early this morning, as an area of low pressure off to our southeast continues to pull eastward away from the area. A ridge of high pressure will quickly build across the region, bringing warm and dry weather to eastern Kentucky. Temperatures today through tomorrow will yet again be well above normal, with highs topping out in the low to mid 70s today, and in the upper 70s to perhaps 80 on Thursday. Overnight lows will be mostly above normal, with ridge top temperatures bottoming out around 50, while the surrounding valleys fall to more normal values in the mid 40s.
145 AM EDT Wed Apr 12 2017 A cold front over the southeast counties will move off to the southeast this evening the high pressure will push east across the region late tonight into Thursday.
351 AM EDT Wed Apr 12 2017 High pressure over the western Great Lakes will move east across the area today. A warm front will develop over the midwest on Thursday.
336 AM CDT Wed Apr 12 2017 A 1028 mb Pacific high pressure ridge was over IL and WI early this morning and bringing clear skies and light to calm winds to CWA. High pressure will drift east across lower MI and upper Ohio river valley during this afternoon. Subsidence and dry air from this high pressure system will bring ample sunshine to central/southeast IL with some passing thin cirrus clouds and fairly light ESE winds near 10 mph or less. Upper level ridge building into IL by Thu night to limit coverage of convection and not expected to be severe.
515 AM EDT Wed Apr 12 2017 Dry conditions will prevail until the next low pressure system impacts the region this weekend. Daytime max temperatures will be slightly cooler. High pressure will support dry conditions and a warming trend in temperatures through the period. Minimal change made in the extended with only minor adjustments in warm and cold frontal timing.
Lee troughing will induce some modest moisture return over the plains of SE WY and W NE.
648 AM EDT Wed Apr 12 2017 Rain showers will be ending over northeast Pennsylvania and portions of south central New York this morning as drier and cooler air moves in behind a cold front. High pressure will likely dominate the region through the rest of the work week with mild temperatures and dry weather.
346 AM EDT Wed Apr 12 2017 Rain showers will be ending over northeast Pennsylvania and portions of south central New York this morning as drier and cooler air moves in behind a cold front. High pressure will likely dominate the region through the rest of the work week with mild temperatures and dry weather.
554 AM CDT Wed Apr 12 2017 A 1028 mb Pacific high pressure ridge was over IL and WI early this morning and bringing clear skies and light to calm winds to CWA. High pressure will drift east across lower MI and upper Ohio river valley during this afternoon. Subsidence and dry air from this high pressure system will bring ample sunshine to central/southeast IL with some passing thin cirrus clouds and fairly light ESE winds near 10 mph or less. Upper level ridge building into IL by Thu night to limit coverage of convection and not expected to be severe.
although most of the region is still under this high canopy thus don't feel the northeastern Dense Fog Advisory will expand much further south (if at all) going into the dawn hours. patchy fog development with temperatures dipping into the lower to middle 60s. Upper ridging axis centered just off to our east will make for partly cloudy conditions. mild mornings in the 60s with days warming into the lower to middle 80s and near nil rain chances.
417 AM EDT Wed Apr 12 2017 A weak cold front will move through our area this morning.
A cold front will bring mainly light rain to the area later Wednesday evening into Thursday morning.
131 AM CDT Wed Apr 12 2017 Mid and high level clouds will spread in from the west overnight as a short wave trough moves closer to region. Quiet conditions are expected tonight as high pressure slides east of the region. The forecast period opens up with an inverted trough across the Central Plains and a leeside low forming across Montana.
420 AM EDT Wed Apr 12 2017 Cooler conditions and lingering showers in the higher elevations and near the Canadian border are expected for Wednesday after the passage of a cold front.
A warm southwest flow will develop today and become stronger on Thursday ahead of a cold front. The cold front will cross Utah late Thursday through Thursday night with any moisture limited to the north.
327 AM CDT Wed Apr 12 2017 An upper level short wave trof was moving through North Dakota at 730Z. This trof was associated with a coupled jet structure and providing enough lift to generate a few showers/sprinkles over northwest Minnesota. By afternoon, the next upper level short wave trof moves over Minnesota. A couple of vorticity maxima will accompany this trof along with a good shot of upper level divergence from the entrance region of an upper jet. These showers will percolate nearby through the night as a couple more embedded impulses move through the base of the upper trof. Elsewhere, high pressure will prevail today and tonight. On Thursday, the upper trof begins to move off to the east accompanied by one last vort max. Upper level and surface ridging follow behind for the afternoon.
Cloud cover will steadily decrease through early this morning, as an area of low pressure off to our southeast continues to pull eastward away from the area. A ridge of high pressure will quickly build across the region, bringing warm and dry weather to eastern Kentucky. Temperatures today through tomorrow will yet again be well above normal, with highs topping out in the low to mid 70s today, and in the upper 70s to perhaps 80 on Thursday. Overnight lows will be mostly above normal, with ridge top temperatures bottoming out around 50, while the surrounding valleys fall to more normal values in the mid 40s. High pressure will provide warm and dry weather for Thursday.
648 AM EDT Wed Apr 12 2017 A weakening cold front will move into the Midlands this afternoon and move south of the CSRA overnight. High pressure will be over the area this weekend.
646 AM EDT Wed Apr 12 2017 A cold front with showers clears the mountains this morning. High pressure builds in today, remaining Thursday.
An upper level low pressure system crossing northern Mexico this weekend will continue to spread moisture northward into southern Utah. High pressure aloft will settle over the Great Basin for the first half of the week, followed by a return to an active weather pattern late in the week.
649 PM EST Sat Jan 14 2017 Relatively cooler high pressure will extend into the Carolinas through the weekend.
TFJ Upper ridging in a dry northwest flow aloft is currently making for quiet weather across northeast Montana. A lee side trough setting up along the front range is helping scour out the lingering arctic airmass over northeast Montana.
655 PM EST Sat Jan 14 2017 System will exit the area this evening and high pressure will briefly build into the region.
Have had to make some changes to min temps as many sites were at or cooler than ongoing min temp fcst. /issued 319 PM CST Sat Jan 14 2017/ Rather distinct warm frontal boundary draped near the LA/AR state line.
556 PM EST Sat Jan 14 2017 a trough of low pressure over the Ohio valley will move off the Mid Atlantic Coast tonight. as high pressure centered over the Central Plains moves east.
637 PM EST Sat Jan 14 2017 Wintry mix will end this evening followed by high pressure for Sunday. Some icing may still be possible in a few spots where temperatures hover near freezing, but overall concerns for further impact is low. Ridge of high pressure will remain in control on sunday, with near average temperature expected under zonal flow. A deeper trough is progged to develop over the plains for the start of the new week.
552 PM EST Sat Jan 14 2017 High pressure will build over the area again through Sunday night.
831 PM EST Sat Jan 14 2017 System will exit the area this evening and high pressure will briefly build into the region.
/issued 256 PM CST Sat Jan 14 2017/ Wx map shows a cold front just about stationary across Central to Northeast Texas, with a warm and humid airmass ahead of it.
1056 PM EST Sat Jan 14 2017 High pressure will build over the area again through Sunday night.
723 PM EST Sat Jan 14 2017 Wintry mix will end this evening followed by high pressure for Sunday. Will need to keep close watch on eastern ridges as freezing drizzle is a possibility past the expiration time of the current advisory in those locations. Some icing may still be possible in a few spots where temperatures hover near freezing, but overall concerns for further impact is low. Ridge of high pressure will remain in control on sunday, with near average temperature expected under zonal flow. A deeper trough is progged to develop over the plains for the start of the new week.
749 PM EST Sat Jan 14 2017 00Z Raob data shows a strong subsidence inversion around 775MB or just under 8KFT associated with deep layered ridging over the forecast area.
/Issued 312 PM CST Sat Jan 14 2017/ Earlier update had removed the Ice Storm Warning for a few counties in northeast OK and replaced with a Freezing Rain advisory as 32F line has held steady from north of Pryor to Tulsa to northern Creek county. with surface temperatures expected to rise just a hair above freezing by this evening. A large area of freezing rain has blossomed across much of western and northwestern OK. Surface temperatures will warm above freezing by Sunday morning. in advance of a strong upper cyclone moving into west TX.
A warm frontal boundary will slowly push to the north tonight into Sunday while a Pacific cold front approaches from the west. Later Sunday evening, the Pacific cold front will move from west to east and affect much of the northern half of South Central Texas.
/issued 319 PM CST Sat Jan 14 2017/ Rather distinct warm frontal boundary draped near the LA/AR state line.