Aikyam-Lab/Synoptic-Bench huggingface dataset:
246 AM EDT WED AUG 31 2016 A cold front will move across the commonwealth late today through early Thursday.
558 AM EDT WED AUG 31 2016 A cold front will move across the commonwealth late today through early Thursday.
Better chances for precip will be seen across the NRN portions of the state as a cold front pushes south into the state. Better chances for precip will be seen across the NRN portions of the state as a cold front pushes south into the state. Tonight Through Thursday High pressure. The activity is bring driven mainly by aftn heating and the influence of the higher terrain. allowing a cold front to drop SWD into AR. Cooler and much drier air wl filter into the FA behind the fnt.
With ridging through NW MN and easterly flow across eastern ND, RAP/ECAM guidance seem reasonable that any activity will remain in central ND and will continue with a dry forecast. Ridge axis begins to shift east this afternoon with strong southerly return flow setting up over western Dakotas by this afternoon. This will keep overnight lows across eastern ND 3 to 5 degrees warmer than Wed morning lows.
505 AM CDT WED AUG 31 2016 Surface analysis shows a ridge of high pressure over Lake Winnipeg and an area of low pressure over James Bay. High pressure will dominate the weather pattern through Thursday with a light north to northeast wind, clear skies, very seasonable temperatures and low humidity readings during the day. A few cumulus clouds will develop Thursday afternoon as high pressure sends a reinforcement of cooler air aloft.
1228 AM CDT WED AUG 31 2016 Short Term (Tonight - Thursday night): Scattered thunderstorms this afternoon are developing across the southern CWA where weak convergence along a 850mb boundary exists and across the northern CWA out ahead of a surface cold front sagging across central Iowa. The first is an upper level trough that will digging across the Upper Midwest into the central Plains. Tomorrow during the day the upper level trough moving across the Upper Midwest will force the aforementioned cold front across Iowa into the area. High pressure will remain in control Thursday and Thursday night with dry conditions and highs in the upper 70s to lower 80s and lows in the mid to upper 50s.
345 AM CDT WED AUG 31 2016 With abundant moisture still in place, showers and storms will return once again as a weak cold front makes its way across the area this afternoon.
428 AM CDT WED AUG 31 2016 Surface analysis shows a ridge of high pressure over Lake Winnipeg and an area of low pressure over James Bay. High pressure will dominate the weather pattern through Thursday with a light north to northeast wind, clear skies, very seasonable temperatures and low humidity readings during the day. A few cumulus clouds will develop Thursday afternoon as high pressure sends a reinforcement of cooler air aloft.
648 AM EDT WED AUG 31 2016 The surface cold front will slide across metro Detroit between 12Z and 15Z. The high amount of low level moisture has led to the development of pockets of IFR stratus in the vicinity of the front. Deep moisture axis (PW values up to 2 inches) early this morning ahead of the weak cold front has been sufficient to generate numerous showers/isolated thunderstorms in the M-59/I-69 corridors with some right entrance forcing, which will be ending shortly, and thus expecting majority of the activity to be over around 12z. At very least, would expect skies to become mostly cloudy during Thursday, holding maxes in the low to mid 70s.
A weak cold front will push onshore today, providing a chance for some light showers from the coast to the Cascades. This front is associated with a large closed low just offshore of British Columbia.
A cold front will move inland today and bring cool temperatures with the threat of light rain showers to most of NW Oregon and SW Washington.
140 AM EDT WED AUG 31 2016 Water vapor imagery this evening shows an upper low centered near Augusta. lingering upper level low and strengthening low along the coastal waters of Ga and Carolinas will keep tropical moisture in place. Models indicate lee troughing will develop out ahead of this feature.
ahead of the next upper trough to affect the region Thursday.
The region was under meridional flow today with a broad mid-level trough stretched across the eastern U. with a large ridge over the western U. While the low clouds may linger across eastern KS through the day, expect some clearing skies across central KS Sunday afternoon.
737 PM EST Sat Jan 28 2017 Low pressure over Labrador will slowly lift north through Sunday. A weak cold front will move into western Maine Sunday morning then exit the Downeast coast Sunday night.
However, winds will become gusty again after 29/15Z and switch to the northwest as a dry cold front passes through the region. With high pressure wedged into the CWA from the west, a disturbance embedded in northwest flow aloft will swing through the forecast area overnight into Sunday morning. Otherwise, look for another seasonable night across the CWA as lows fall into the low and middle 30s. Quiet weather will prevail early in the period as the region will transition to being on the west side of a digging trough on Sunday to more zonal flow through much of the week. By Sunday night, a large digging upper trough encompassing much of the eastern third of the CONUS will continue to push east. This should leave conditions on the cooler side in the northern part of the ArkLaMiss.
1039 PM EST Sat Jan 28 2017 Low pressure over Labrador will slowly lift north through Sunday. A weak cold front will move into western Maine Sunday morning then exit the Downeast coast Sunday night.
832 PM CST Sat Jan 28 2017 Surface ridging over the state will result in light winds tonight, with temperatures falling into the mid 30s to low 40s in many locations under excellent radiational cooling conditions. A few low-lying or sheltered locations like Conroe may dip into the lower 30s by sunrise, possibly experiencing a (brief) light freeze. /ISSUED 601 PM CST Sat Jan 28 2017/ High pressure over West Texas will continue to inch its way across Texas tonight and Sunday.
729 PM EST Sat Jan 28 2017 A cold front will approach from the northwest tonight and move through the region Sunday.
Britt Several disturbances within a NW flow pattern aloft will move across the area tonight and tomorrow, bringing periods of clouds and flurries to parts of MO/IL as well as contributing to the development of a trough over the East Coast. Low temperatures will be slightly warmer than average tonight and highs will be near average tomorrow across most of the area.
Clouds wl be increasing over NRN AR later tngt and Sun morning as a weak sfc trof drops SEWD thru the FA.
Moisture had increased in the lower and mid levels, but still noticeably dry above 700 mb. Cold air advection from the north has led to a much cooler and drier day as compared to yesterday. Maximum temperatures have struggled to rise into the low 70s. Tonight, global models begin to deepen a long wave trough over the southeast CONUS.
622 PM CST Sat Jan 28 2017 A very amplified pattern across North America today with a ridge across the western CONUS and longwave trough centered over the Great Lakes Region.
602 PM CST Sat Jan 28 2017 Several disturbances within a NW flow pattern aloft will move across the area tonight and tomorrow, bringing periods of clouds and flurries to parts of MO/IL as well as contributing to the development of a trough over the East Coast. Low temperatures will be slightly warmer than average tonight and highs will be near average tomorrow across most of the area.
So, while colder air will be advecting into the low levels, drier air will be, too; thus, I'm not seeing any overlap of freezing temperatures/potential for sufficient trailing moisture to yield an occurrence of flurries over the far northeastern areas of our forecast area. A broad upper trof over the eastern United States will produce west to southwest sfc winds thru the period. A short wave trof will produce some mid level clouds across north Alabama during the day on Sunday, but no precipitation is expected at any of the TAF sites.
There remains a small threat for some light drizzle or freezing drizzle overnight and on into the day on Sunday. Given this, still think there is a possibility of freezing drizzle, especially in the Sisseton Hills region where a little topographical lift may be present. High temperatures on Sunday should again rise into the low 30s across the northeast CWA to near 40 across the southwest CWA.
943 PM EST Sat Jan 28 2017 A cold front will approach from the northwest tonight and move through the region Sunday.
535 PM CST Sat Jan 28 2017 Light snow chances tonight, then warmer temperatures for the beginning of the work week, are the main highlights of the forecast.
608 PM CST Sat Jan 28 2017 Sharp ridge over the western CONUS and deep trough over the eastern CONUS with northern and central plains in north northwesterly flow. As for high temperatures on Sunday, have raised them once again warmer than models are forecasting. Have bumped temperatures into the 50s across our southwest and across north central Nebraska where there is still an abundant snow cover have only bumped temperatures a few degrees to push them in to the low to mid 40s. Through the first part of the week ridge to the west flattens out with upper pattern through the northern plains becoming more fast northwesterly.
Western CONUS ridge continues to shift east into the high plains. Warmer and dry for the area on Sunday, though it will still be breezy across the plains.
EXPANSION OF THE STRATUS OR FREEZING FOG DEVELOPMENT REMAINS POSSIBLE AS WELL.
530 PM CST Sat Jan 28 2017 Very dry w-nw flow at all lvls continues with series of reinforcing cold fronts resulting in persistent VFR SKC with daytime winds from the wnw 10 to 15 kts and gusty, diminishing to around 5kts overnight, to continue thru the 30/00z fcst cycle. /issued 237 PM CST Sat Jan 28 2017/ Tonight a cold front will usher in a re-enforcing shot of cooler air, but no precipitation with this front. Overnight low temperatures will fall to the low 30s to upper 20s, but temperatures will rebound on Sunday. Once again the wind will make it feel cooler than what it actually is outside so a jacket will be needed for most of the day.
601 PM CST Sat Jan 28 2017 High pressure over West Texas will continue to inch its way across Texas tonight and Sunday.
Winds will be a bit breezy out of the NW Sunday afternoon as the area finds itself between a departing front to the east and high pressure over Mexico. With clouds out of the picture for the most part, temperatures will likely be a little cooler than last night. Area is entering a broad trough axis across the eastern U.
457 PM CST Sat Jan 28 2017 Benign weather is expected across the forecast area for the next several days as upper level ridging prevails.
Therefore, temps overnight were raised just a couple degrees, which keeps lows at or above freezing south of a kcgi/kpah/Madisonville line. By midnight precipitation in the form of snow showers will begin to move into the far northwestern sections of our CWA as the first of a series of short waves rotating around the back side of an upper low over southeast Canada taps into deeper moisture.
/issued 948 PM CST Sat Jan 28 2017/ A few changes made to the ongoing forecast such as increasing overnight temperatures a few degrees, due to a persistent light westerly wind/downslope wind that will in turn provide for a slightly warmer overnight then previously thought. /issued 237 PM CST Sat Jan 28 2017/ Tonight a cold front will usher in a re-enforcing shot of cooler air, but no precipitation with this front. Overnight low temperatures will fall to the low 30s to upper 20s, but temperatures will rebound on Sunday. Once again the wind will make it feel cooler than what it actually is outside so a jacket will be needed for most of the day.
Rain chances will end early Sunday morning as drier air moves in behind passage of upper short wave trough.
Strong short wave trough moving across the lower Great Lakes this evening will enhance lift. Cellular look to the snow showers over lower MI gives a hint of the instability underneath the trough.
Chattanooga Airport, TN 33 44 30 46 / 10 40 20 0 Knoxville McGhee Tyson Airport, TN 33 43 29 41 / 20 70 60 10 Oak Ridge, TN 33 43 29 41 / 20 70 60 10 Tri Cities Airport, TN 27 41 24 36 / 30 70 70 20 TN.
A few of the colder locations, such as Oakdale and Esler Field that are sheltered and rural with lower wind speeds will see the lower temperatures in the low to mid 30s. Winds will be a bit breezy out of the NW Sunday afternoon as the area finds itself between a departing front to the east and high pressure over Mexico. With clouds out of the picture for the most part, temperatures will likely be a little cooler than last night. Area is entering a broad trough axis across the eastern U.
830 PM EST Sat Jan 28 2017 An upper low over the Great Lakes region is diving southward through the Tennessee River Valley. A mid level trough resides across the Central Gulf of Mexico and Florida Peninsula. The upper low will nudge the boundary to our north southward overnight. Expect north winds to surge Sunday as a trough makes it to the Gulf of Mexico.
As high pressure settles across the region, winds will become lighter from generally the west overnight then the direction is expected to become more northwest on Sat. sfc flow becomes more westerly as elongated high pressure axis extends southeastward into the region. am banking on enough weakening of the sfc winds to allow for temps to fall to the lower end of guidance /if not slightly below guidance values/. Isolated locations may briefly approach the freezing mark late in the night. Some downsloping/adiabatic processing from the NW flow should result in temps warming into the low 70s in the afternoon across inland areas /60s along the immediate coast/.
This wave looks to be mainly light snow as temperature profiles will be cold enough throughout the column despite surface temperatures near or just above freezing. Exception will be in the northern Plateau counties where higher elevations combined with cooler temperatures will keep precip all snow. Some travel impacts are possible in the advisory area, especially where snow falls heavy enough to cover roadways, as well as Sunday evening/night when temperatures fall well below freezing. Few if any travel impacts are expected elsewhere due to warmer temperatures and warm ground.
/Issued 457 PM CST Sat Jan 28 2017/ Benign weather is expected across the forecast area for the next several days as upper level ridging prevails.
An upper ridge to the west is generating a northwesterly flow aloft over Northeast Montana tonight, with very cold air continuing to flow into the area. The stationary frontal boundary between the Arctic air-mass and the warmer air to the southwest remains well to our south.
1030 PM EST Tue Feb 7 2017 Cold front overnight. Low pressure south of area Wednesday night.
651 PM EST Tue Feb 7 2017 Rain showers will continue tonight until the passage of a cold front.
Will go ahead and leave the wx and pop grids alone as the low pops theme still appears to be in play. The cold front will reach our area around midnight and should be into southern counties by 12z. Dependent on actual timing of sfc frontal movement into mid state, sfc winds will generally fluctuate from S to N and then back to S as front pushes slight NWD as a warm front 08/15Z-08/24Z into mid state.
958 PM EST Tue Feb 7 2017 A low pressure system will come through the area tonight providing a chance of thunderstorms.
302 PM MST Tue Feb 7 2017 Upper level analysis has weak trof shifting into Minnesota and the Great Lakes region, with fast zonal flow across the western CONUS. At the surface, Arctic high pressure resides to the north of the forecast area, with a frontal boundary draped across the central Rockies and Plains. Models are in good agreement on the location of the higher amounts being across the central and southern Black Hills into southwestern SD, where 3 to 6 inches will be possible. Another cloudy and cold day is expected, with highs in the teens, with lower to mid 20s across Northeast Wyoming and the higher Black Hills.
A cold front will move across the terminals on Wednesday, with north to northwest winds gusting to around 20 knots following FROPA. Southern and low lying areas, especially along the I-10 corridor and Llano and San Saba River Valleys, will see lower winds and cooler into the mid 40s. A cold front will move into the Big Country late Wednesday morning and along the I-10 corridor mid afternoon. 04 (Wednesday night through next Tuesday) Winds will already be turning around to the east/southeast by Wednesday night, following the cold front that will move through during the day.
To the west of the forecast area, a few storms have developed just ahead of the cold front that will be pushing through tonight. The latest HRRR runs continue to initiate storms along the rest of the cold front across southern IN. However, upstream the cold front was still located over IL, clouds are thin or becoming scattered, and instability is building again. Looking at satellite, some cu are starting to become enhanced very close to the cold front. For Wed, expect a mainly dry morning with another round of showers and possibly a rumble of thunder tomorrow afternoon courtesy of an upper level trough.
Dependent on actual timing of sfc frontal movement into mid state, sfc winds will generally fluctuate from S to N and then back to S as front pushes slight NWD as a warm front 08/15Z-08/24Z into mid state.
937 PM EST Tue Feb 7 2017 The cold front has just begun to enter the forecast area. To the west of the forecast area, a few storms have developed just ahead of the cold front that will be pushing through tonight. The latest HRRR runs continue to initiate storms along the rest of the cold front across southern IN. However, upstream the cold front was still located over IL, clouds are thin or becoming scattered, and instability is building again. Looking at satellite, some cu are starting to become enhanced very close to the cold front. For Wed, expect a mainly dry morning with another round of showers and possibly a rumble of thunder tomorrow afternoon courtesy of an upper level trough.
928 PM EST Tue Feb 7 2017 Rain showers will continue tonight until the passage of a cold front.
A cold front will swing through early Wednesday, ushering in colder air and scattered rain and snow showers. even the high-resolution models. In the meantime, we are handling pockets of freezing rain with an SPS. Cold front sweeps through late tonight beginning a return to more seasonable air.
Both indicate a reinforcing upper trough to dig deep across the eastern US late Wednesday.
Moisture depth is limited to the lowest 100mb and current thinking is that fog should quickly develop once surface winds fall to below 5 knots /current speeds are just high enough to preclude fog development/.
638 PM EST Tue Feb 7 2017 Low pressure will move rapidly into Ontario tonight with a trailing cold front sweeping across our area bringing a brief return to more winter like conditions. Temperatures will fall tonight and recover little on Wednesday with highs around freezing.
This trough is implicated in a tornado outbreak, for the areas just inland along the Northcentral and Northeastern Gulf Coast (from Louisiana to NW Florida). A 50-75 knot at 500 mb in tandem with around 75 to 100 knot at 250 mb jetstream rounds the bend at the base of the trough across the Eastern Gulf of Mexico into North-Central Florida. At the surface and in the lower to middle levels, latest marine and land surface observations and analysis as of 800 pm, detail a cold front extending southwest into Eastern Texas from near Grand Rapids. Overnight, the westernmost edge of the aforementioned surface ridging will slide a bit eastward, allowing for local gentle southeast winds to become more southerly by morning.
Frontal trof pushing acrs the Lwr MS Valley will interact with the Atlc ridge axis over S FL/FL Straits to generate a gentle to moderate SW breeze over most the area.
We will need to watch trends for a possible brief period of MVFR ceilings immediately behind the cold front, especially northern TAF sites. /issued 349 PM CST Tue Feb 7 2017/ Another cold front will move through the area late tonight and Wednesday morning taking the edge of the temperatures for a couple of days.
Cold front, currently near the OK/KS state line, will begin to make a southward push overnight.
Axis of vigorous upper level trof that has been responsible for instances of damaging storms today was now moving across the MS/AL border. Colder air aloft within the trof axis continues to support the potential for isolated severe storms containing large hail thru this evening. The tornado potential though will be on the decrease as the trof axis moves across.
DML Cold front moves through the area tomorrow, but column continues to look too dry for precipitation. The fog threat will end Wednesday night as drier air sweeps in behind the cold front.
918 PM CST Tue Feb 7 2017 Issued update to get rid of the High Wind Warning. Winds have decreased below high wind criteria in both the Guadalupe Mountains and Davis Mountains and are not expected to increase so have allowed the High Wind Warning to expire. /issued 244 PM CST Tue Feb 7 2017/ WV imagery shows yesterday's the upper trough has entered the MS Valley, leaving dry, NW flow aloft over West Texas and Southeast New Mexico.
720 PM EST Tue Feb 7 2017 A low pressure system will come through the area tonight providing a chance of thunderstorms.
Well after quite a bit of record heat this afternoon in the low to mid 80s, we are falling down quickly this mid evening with the lower dew points the southwesterly winds coming in behind the trough, which is still struggling through out SE parishes. The cold front is still almost a day away currently over S. It will be too late with much of any cool air advection for the big change on highs coming, but this drier air is trending for cooler mornings and one afternoon anyway.
549 PM CST Tue Feb 7 2017 South winds wind 6 knots or less tonight to increase to 10 knots with higher gusts on Wednesday ahead of a cold front that will move across the region during the afternoon.
544 PM CST Tue Feb 7 2017 A cold front continues to work across the terminals with winds shifting to the northwest with time.
731 PM EST Tue Feb 7 2017 A low pressure system will come through the area tonight providing a chance of thunderstorms.
1044 PM EST Tue Feb 7 2017 A low pressure system will come through the area tonight providing a chance of thunderstorms.
/issued 244 PM CST Tue Feb 7 2017/ WV imagery shows yesterday's the upper trough has entered the MS Valley, leaving dry, NW flow aloft over West Texas and Southeast New Mexico.
538 PM EST Tue Feb 7 2017 Rain showers will continue tonight until the passage of a cold front.
700 PM EST Tue Feb 7 2017 Cold front tonight. Low pressure south of area Wednesday night.
258 PM EDT Wed Mar 22 2017 High pressure will build across the area tonight, and move offshore Thursday night.
228 PM EDT Wed Mar 22 2017 Mostly clear skies and warm temps this afternoon as cold front moves across the area. Behind front, increasing northeast surface flow will set up Tonight as strong high pressure builds well north of the area. Strong high pressure will build over Mid-Atlantic coast Thur and move just offshore Fri. while strong upper ridge builds over the southeastern U.
203 PM EDT Wed Mar 22 2017 Cooler air returns to the region behind a departing cold front and will linger through the end of the work week. A warm front will lift north over the region over the weekend bringing increased chances for widespread precipitation. Low level cold advection will continue through that time, as the high takes on a CAD configuration. However, while warm advection will ramp up over the high during the day, it does so without enough moisture for sustained cloud cover, much less precip. However, the northwest NC Piedmont is still expected to drop below freezing.