Aikyam-Lab/Synoptic-Bench huggingface dataset:
921 AM EST Mon Feb 27 2017 Warmer weather moving in with a strong cold front expected midweek. This will be a transition period toward warmer and unsettled weather. Models in very good agreement on an upper disturbance lifting a weak warm front northward across the area today. Despite the clouds today, southerly flow behind the warm front will boost temperatures. Look for highs today in the lower 50s north to the lower 60s far south. For tonight, the upper disturbance and warm front will be north of the area, but another upper disturbance will approach late tonight from the southwest.
649 AM EST Mon Feb 27 2017 High pressure off the coast will bring milder air up from the south through the middle of the week.
An upper ridge south of Cuba reached over the Gulf of Mexico with southwest flow containing a weak embedded short wave trough aloft the central Gulf coast. High pressure off the Mid-Atlantic coast ridged southwest. This will provide a slight increase in moisture which along with lift as the short wave trough track across the east gulf into FL will be enough to support some low odds of showers/storms this afternoon for the nature coast and inland central and southern counties. becoming easterly in the evening High pressure ridging across FL into the gulf today will provide southeasterly winds.
436 AM MST Mon Feb 27 2017 Overnight water vapor loop showed the next Pacific upper trough over the northwest CONUS.
/issued 243 AM CST Mon Feb 27 2017/ Showers and thunderstorms pushing east across northeast Texas, southern Arkansas, and extreme north Louisiana at this time due to enhanced low-level warm advection in the vicinity of a warm front.
624 AM EST Mon Feb 27 2017 Warmer weather moving in with a strong cold front expected midweek. This will be a transition period toward warmer and unsettled weather. Models in very good agreement on an upper disturbance lifting a weak warm front northward across the area today. Despite the clouds today, southerly flow behind the warm front will boost temperatures. Look for highs today in the lower 50s north to the lower 60s far south. For tonight, the upper disturbance and warm front will be north of the area, but another upper disturbance will approach late tonight from the southwest.
However, the GFS, NAM and HRRR models appear to be fairly excited about spooling up a quick shot of snowfall later this morning through early afternoon first in the Magic Valley then spreading east through the Pocatello area by early afternoon with the upper trough passage.
Regional surface analysis shows high pressure centered along the mid- Atlantic coastline this morning with moderate winds from the southeast across the local area. Highs across the area will range from the mid 70s to the low 80s, with the warmest temperatures further east.
But the low level flow is expected to be slightly stronger so not expecting the coverage of fog to be as much as this morning. The short wave trough over the Ozarks early this morning will move through the Tennessee Valley today. The next short wave trough will move into the Desert Southwest this evening and across the southern Rockies Tuesday. Otherwise, another very warm day will be in store with temperatures slightly warmer than Monday. Winds speeds will be slightly higher on Tuesday as the pressure gradient increases due to low pressure strengthening over West Texas in advance of the short wave trough.
419 AM CST Mon Feb 27 2017 Widespread freezing fog is being reported from Kirksville through St. This is all in thanks to a ridge axis directly overhead, allowing for light to calm winds, clear skies, and just about no dewpoint depression. A warm front lifting north across the area later today into tonight will bring the chance for rain. Cold front pushing its way through the region on Tuesday, coupled with 60+ kts.
An upper trough is moving across the eastern mountains this morning with a small band of snow associated with it.
406 AM MST Mon Feb 27 2017 Upper level analysis has near zonal flow across the CONUS with upper trof moving into the Northern Rockies. Upper level trof will slide across the Northern Plains on Tuesday, with mostly cloudy skies expected. High temperatures will be slightly cooler, in the upper 20s to mid 30s.
624 AM EST Mon Feb 27 2017 High pressure offshore will result in onshore flow today.
926 AM EST Mon Feb 27 2017 Chilly temperatures this morning will quickly rebound this week as a warm front lifts north, leading to near record high temperatures by mid-week.
Will carry LLWS at FSM early tomorrow morning, associated with the low level jet. /Issued 355 AM CST Mon Feb 27 2017/ Sfc warm front remains well south of the Red River this morning with isolated storms ongoing across SE OK along the elevated frontal zone. Storms originating near this zone will also quickly become severe while the trailing cold front surging southeastward Tues evening will provide an additional focus.
934 AM EST Mon Feb 27 2017 Latest surface analysis shows ridge moving offshore the mid atlantic coast at this time with weak boundary, remnants of front that approached the region yesterday, just to our east across the NW Bahamas.
The upper trough that brought several inches of snow to mountain passes west of the Cascades and up to a foot of snow in the High Cascades is pushing east and out of the forecast area.
631 AM EST Mon Feb 27 2017 High pressure off the coast will bring milder air up from the south through the middle of the week.
529 AM MST Mon Feb 27 2017 There are some issues with the incoming trough. We have been expecting a shallow moisture layer coming into the mountains to deepen today and produce snow that peaks with the trough passage this evening. Spatial cross-sections not as generous in the mountain regarding the moisture but still should see light to moderate snowfall in the high country through Tuesday night.
Temperatures will range from the low 60s to low 70s today and won't decrease much overnight.
424 AM CST Mon Feb 27 2017 Surface map shows a high pressure system centered around the Mid- Atlantic States. with a low pressure system over extreme west Texas. An old stalled frontal boundary extends eastward from the low across north Texas and through the Arklatex.
530 AM CST Mon Feb 27 2017 Water vapor satellite this morning shows a long wave trough over the West Coast with an embedded upper level low over Oregon. This trough will advance east through the first half of the week with several short wave troughs expected to get ejected out from it. One of these short wave troughs will move across the region from late tonight through Tuesday morning.
1005 AM EST Mon Feb 27 2017 High pressure offshore will result in onshore flow today.
A winter disturbance along with a cold front will move across the state today.
Satellite imagery depicts cold upper trof moving across NorCal early this morning. High pressure from the eastern Pacific will move across the region later Tuesday and continue through mid-week.
Meanwhile, local radars are only detecting a few showers on the distant waters beyond 50 nm south of the Lower Keys. Surface wise, a strengthening (1032 mb) ridge axis extends across the southeast United States, resulting in east to southeast winds of 14 to 18 knots on our marine district. With our area on the southern periphery of a deep troposheric western Atlantic ridge axis aligned across the south Florida, large scale subsidence will persist. Plenty of insolation within a veering east to southeast flow, will allow high temperatures to climb mainly in the lower 80s except 85 degrees at the Marathon ASOS.
409 AM CST Mon Feb 27 2017 As a lee low forms across the high plains, winds will shift to south and southeast to the south of a warm front, which will develop along the northern tier of South Dakota today. To our northwest, high pressure will result in dry northerly flow according to NAM BUFKIT soundings, which will limit accumulations there.
There is a surface warm front that extends from our southern offshore waters into Palm Coast through the north central part of the peninsula into the Cedar Key region. The onshore flow will continue through the day, allow the lower atmosphere to moisten as the day progresses with our temperatures moderating to warmer side mainly upper 70s to lower 80s. At the same time, the aforementioned warm front will move northward today, initially with some isolated /scattered showers and isolated thunderstorms developing across the southern tier zones across north central Florida by early afternoon with CAPES increasing into the 750-1200 J/kg across northeast Florida by late afternoon.
745 AM EST Mon Feb 27 2017 Rain chances return today with a crossing warm front. A series of disturbances will keep periodic rain in the forecast through mid week until the passage of a cold front returns wintry weather for the last half of the week. This dry air will likely take a few hours to overcome, during which time temperatures with warm advection should continue to rise above freezing. The region is progged to be in the warm sector in SW flow ahead of a trough advancing ewd from the Western CONUS.
Chattanooga Airport, TN 56 51 69 59 / 60 40 60 50 Knoxville McGhee Tyson Airport, TN 57 50 69 59 / 10 40 60 50 Oak Ridge, TN 58 49 68 58 / 20 40 60 50 Tri Cities Airport, TN 59 43 69 52 / 10 20 40 40.
Long wave trough over the Pac NW will keep unsettled conditions across southeast Oregon and southwest Idaho through Tuesday.
357 AM MST Mon Feb 27 2017 Updated this morning's low temperatures as increasing cloud cover and a bit of wind kept temperatures 5 to 8 degrees warmer than expected. The next storm system appears to be strengthening over the Pacific NW with its cold front sweeping across northern NV and into NW UT. A strong polar jet rounds the bottom of the trough and curves toward the north over WY and the high plains, while to subtropical jet is arcing north over southern CA. The surface cold front should push through NE UT into extreme NW CO late this afternoon and early evening then progress through most of the forecast area overnight and hanging up over SW CO Tuesday morning.
609 AM EST Mon Feb 27 2017 Chilly temperatures this morning will quickly rebound this week as a warm front lifts north, leading to near record high temperatures by mid-week.
523 AM CST Mon Feb 27 2017 Widespread freezing fog is being reported from Kirksville through St. This is all in thanks to a ridge axis directly overhead, allowing for light to calm winds, clear skies, and just about no dewpoint depression. A warm front lifting north across the area later today into tonight will bring the chance for rain. Cold front pushing its way through the region on Tuesday, coupled with 60+ kts.
527 AM EST Mon Feb 27 2017 Rain chances return today with a crossing warm front. A series of disturbances will keep periodic rain in the forecast through mid week until the passage of a cold front returns wintry weather for the last half of the week. This wave and an approaching warm front should result in increasing light rain chances later this morning and afternoon. The region is progged to be in the warm sector in SW flow ahead of a trough advancing ewd from the Western CONUS.
The short wave trough over the Ozarks early this morning will move through the Tennessee Valley today. The next short wave trough will move into the Desert Southwest this evening and across the southern Rockies Tuesday. Otherwise, another very warm day will be in store with temperatures slightly warmer than Monday. Winds speeds will be slightly higher on Tuesday as the pressure gradient increases due to low pressure strengthening over West Texas in advance of the short wave trough.
647 AM CDT THU MAY 19 2016 Southerly winds will increase slightly today as high pressure over the Great Lakes slides east.
1103 AM EDT THU MAY 19 2016 Hydro High pressure will essentially be parked over the Great Lakes region from today right through the weekend.
1020 AM EDT THU MAY 19 2016 High pressure will build through Friday morning.
SKC and light winds through tonight under high pressure. A rather stagnant pattern is setting up over lower Michigan as exiting trough stalls over the east coast while deepening closed low remains stationary over the west coast. This is resulting in broad ridging developing across much of the central plains while the lingering thermal trough remains over the Great Lakes.
Morning surface analysis shows dewpoints across the entire forecast area in the lower 70s.
/issued 347 AM CDT THU MAY 19 2016/ Broad region of convection ahead of an approaching upper trough has begun to slowly move into central tx. Gradually tapering pops from the west durg the day Friday and upper ridge allowing for partly sunny skies and fairly seasonal temps thru wknd.
/issued 357 AM CDT THU MAY 19 2016/ (Today and Tonight) Showers and thunderstorms are moving into the western portions of West Central Texas as an upper level trough across New Mexico approaches the area.
1243 PM EDT THU MAY 19 2016 High pressure overhead will build to the east coast through Friday.
1006 AM EDT THU MAY 19 2016 Drier and warmer weather is forecast for today and most of Friday. Most areas will have mostly sunny skies for the rest of the day under high pressure. Areas along the ridges will see more in the way of cumulus clouds. CL Upper level ridge will build over the Upper Ohio Valley tonight and slowly move eastward through Friday. The next mid level trough will start to deepen over the lower Ohio Valley Friday afternoon.
1051 AM CDT THU MAY 19 2016 High pressure across Central Illinois this morning with light winds and mostly sunny skies. Sprawling ridge of high pressure extending from the Great Lakes to the Southern Plains will provide mild and dry weather across central Illinois today. Upper low currently evident on water vapor imagery along the coast of British Columbia is still progged to dig southward across the West Coast of the CONUS over the next few days, causing a persistent piece of energy over the Desert Southwest to eject northeastward by the end of the week.
958 AM CDT THU MAY 19 2016 High pressure over the Great Lakes and low pressure developing in the lee of the northern Rockies will maintain a southerly flow across western and central ND today. Tonight, a ridge aloft becomes pinched off over the northern plains but this will for the most part suppress convection across the region.
/issued 324 AM CDT THU MAY 19 2016/ A stalled front remains located along the Gulf Coast this morning while high pressure covers the Upper Mississippi and Ohio Valleys. Drier air has filtered into much of the Mid-South overnight with thanks to the high pressure nudging into the area. The boundary will then begin lifting northward as a warm front. However, with the expected ongoing convection Friday Morning, would think the atmosphere should be pretty worked over for any severe storm to generate ahead of the trailing cold front.
1200 PM EDT THU MAY 19 2016 High pressure builds today giving a brief dry period.
VFR conditions will persist through Friday under high pressure. High pressure centered over the great lakes will bring light winds and low waves through the weekend. FORECAST CONFIDENCE HIGH Mid-level ridging over Wisconsin breaks down as a short wave drops from southern Manitoba into northern Minnesota by 12Z Friday.
1051 AM EDT THU MAY 19 2016 High pressure building southeast into the region will bring a clear to partly cloudy and chilly night tonight.
The highest concentration of storms is expected along the I-95 corridor mid to late this afternoon and also across inland southeast Georgia late this afternoon into this evening.
505 AM MDT THU MAY 19 2016 A transitory ridge will move across the area today. The ridgeline will move east of the area friday and that will allow increase southerly surface winds ahead of the large trough along the west coast.
1257 PM EDT THU MAY 19 2016 High pressure will continue to provide quiet weather and gradual warming through Friday.
A ridge is currently in place across the Four Corners spreading north into Wyoming and eastern montana. A large trough stretches from British Columbia down into northern California and is making its plunge further south. Southern to Southwest flow exists between these two features with unstable flow just west of the ridge axis. ridge axis will remain centered north/south over the far western zones of the GGW CWA. These storms have a small potential to last into the evening hours if a jet streak to the west of the ridge axis moves by.
1006 AM EDT THU MAY 19 2016 High pressure will keep dry weather across the region today.
/issued 307 AM CDT THU MAY 19 2016/ Rain/showers will continue to develop and move eastward this morning as an upper level trough approaches the Southern Plains. Most of the rain will end by afternoon/evening but widely scattered showers will linger until the mid/upper trough moves east of the area late tonight.
Expect drying conditions today with a few lingering showers over the higher terrain from Flagstaff eastward. The upper low that brought showers and thunderstorms to our area for the last few days has weakened and moved east into New Mexico this morning. However, the airmass is rapidly stabilizing as a s/wv ridge moves over the area and coverage will be drastically reduced compared to yesterday. Another large and unseasonably cold trough will enter the Great Basin later today and will affect the weather through the weekend.
Have kept temps as is for the most part this afternoon but adjusted hourly trends to reflect cooler morning temps due to the clouds. Stumpf /ISSUED 710 AM CDT THU MAY 19 2016/ For 12Z TAFs: Satellite data indicates that area of low stratus north of cold front continues to erode, but should persist long enough to provide an additional hr of mvfr cigs at HSV.
7 inches with 500mb temps about a degree cooler than yesterday. With slightly cooler temps/divergence aloft and some mid level dry air, expect that sea breeze storms this afternoon/evening should be a bit stronger than yesterday.
Rain chances will increase tonight with the approach of the upper level trough. Chattanooga Airport, TN 80 60 70 61 / 10 50 100 60 Knoxville McGhee Tyson Airport, TN 74 56 73 60 / 10 30 100 100 Oak Ridge, TN 75 57 71 60 / 10 30 100 100 Tri Cities Airport, TN 71 52 69 56 / 20 20 80 100.
624 AM CDT THU MAY 19 2016 Today will start sunny, and it will be rather nice throughout the day into the evening hours, but a trough starting to eject from the Desert Southwest will spread a bit of moisture north today into tonight kicking up the cloud cover across the region as well as bringing us the remote possibility of rain late tonight. Models runs have been trending the track of the ejecting Desert Southwest trough further south over the past several runs, taking the focus for rain late tonight and shifting it south.
CONSIDERING THAT ORD WILL SEE SOME LAKE INFLUENCE THIS AFTERNOON AND PROGGED 925 MB READINGS ARE A BIT WARMER SOUTH AND WEST OF THE LAKE. With high pressure remaining parked over the Great Lakes and Upper Midwest, mostly clear skies and weak upper ridgeing and modest height rises vs.
Cloudiness will begin to increase throughout the day, especially in north Mississippi as moisture increases ahead of a warm front that will approach the region later today. /issued 324 AM CDT THU MAY 19 2016/ A stalled front remains located along the Gulf Coast this morning while high pressure covers the Upper Mississippi and Ohio Valleys. Drier air has filtered into much of the Mid-South overnight with thanks to the high pressure nudging into the area. The boundary will then begin lifting northward as a warm front. However, with the expected ongoing convection Friday Morning, would think the atmosphere should be pretty worked over for any severe storm to generate ahead of the trailing cold front.
644 AM CDT THU MAY 19 2016 Sprawling ridge of high pressure extending from the Great Lakes to the Southern Plains will provide mild and dry weather across central Illinois today. Upper low currently evident on water vapor imagery along the coast of British Columbia is still progged to dig southward across the West Coast of the CONUS over the next few days, causing a persistent piece of energy over the Desert Southwest to eject northeastward by the end of the week.
1249 PM EDT THU MAY 19 2016 A weak upper level low will cross the area today and tonight.
948 AM MDT THU MAY 19 2016 12z KUNR sounding showed potential temperatures in the middle 70s, which would give 250-500J/kg MLCAPE this afternoon with little MLCIN over the higher terrain and over portions of northeast WY / southwest SD. 5-1K J/kg over the Black Hills and southeasterly upslope surface winds advecting higher dewpoints, leading to thunderstorm development over the higher terrain. Again the Black Hills will be uncapped, so thunderstorms will develop over the higher elevation, but CIN and low shear on the plains will inhibit progression of storms. Thermal ridge remains over the high plains, and temperatures will continue to warm today and Friday.
746 AM EDT THU MAY 19 2016 Aviation High pressure will essentially be parked over the Great Lakes region from today right through the weekend.
624 AM CDT THU MAY 19 2016 The bank of 7kft midlevel cloudiness along and west of Highway 83 should move east today with the approach of a 700mb warm front. The temperature forecast leans on the warmer RAP model which was a few degrees warmer than guidance in some areas.
The sea breeze should push into the interior by the early afternoon and this is where the highest rain chances are expected today. a bit cooler at the coast courtesy of the sea breeze. High pressure will be ridging across the peninsula at the surface with low pressure in place just to the north of the state. Deep moisture will be in place across the area with an upper trough moving over the state. The area of low pressure will lift to the NE through the weekend with a weak frontal boundary moving through the area.
1144 AM EDT THU MAY 19 2016 High pressure builds today giving a brief dry period.
Southwest to west winds this afternoon will shift back to the southeast to south tonight and Friday as high pressure ridges in from the east across the Florida peninsula.
Another clear and cool spring night over the region courtesy of high pressure sprawled out from MI SE across the forecast area.
High pressure will shift east today ahead of the next Pacific storm. Upper low clearly indicated on morning satellite imagery across the Pacific Northwest along with a significant jet streak rounding the base of the trough. This trough will slowly dig southeastward and intensify through Friday and remain across the Pacific Northwest/Northern California area into the weekend. The associated cold front will approach the northwestern corner of the state this afternoon. Ahead/near the cold front, expect convection to develop this afternoon and evening. A cold front is expected to cross the terminal between 00-02Z.
A cold front is now east of our forecast area, and we will encounter much cooler, showery, and locally breezy conditions as an upper low moves over us today. As the center of the low moves over us tonight and tomorrow morning, showers will be plentiful, especially in the upslope areas of the west side. In addition, models continue to show significant precipitation in a deformation zone east and north of the low across Modoc, Lake, and parts of Klamath Counties later tonight into tomorrow. However, confidence on the lower conditions are low to medium. Offshore high pressure and weak low pressure over the waters will persist into the weekend.
Partial clearing/sunshine should occur over the most of the area by mid- late Friday afternoon, supporting warmer temperatures.
1215 PM EDT THU MAY 19 2016 High pressure builds today giving a brief dry period.
705 AM EDT THU MAY 19 2016 High pressure overhead will build to the east coast through Friday.
701 AM EDT THU MAY 19 2016 High pressure overhead will maintain light winds today. A rather stagnant pattern is setting up over lower Michigan as exiting trough stalls over the east coast while deepening closed low remains stationary over the west coast. This is resulting in broad ridging developing across much of the central plains while the lingering thermal trough remains over the Great Lakes.