Aikyam-Lab/Synoptic-Bench huggingface dataset:
The axis of the cold upper trof is just to our west this evening and the associated cold front extends from near Delta to Provo to Evanston. Temps have dropped to near or below freezing in most areas behind the front and the combination of this plus the wind and snow is starting to create slick driving conditions in the valleys with snow covered roads over the passes. Do still expect the snow to turn showery across the nrn CWA by midnight and sub surface temps will stay well above freezing. Models still indicate warm frontal precip could bring more snow to the nrn CWA Mon night with possible impacts again for Tue morning commuters.
Expect the incoming clouds tonight to stay around tomorrow leading to cooler temperatures than we experienced today. Chattanooga Airport, TN 50 66 54 65 / 20 20 30 80 Knoxville McGhee Tyson Airport, TN 47 63 51 64 / 40 20 30 80 Oak Ridge, TN 47 63 52 64 / 40 20 30 80 Tri Cities Airport, TN 39 60 46 63 / 30 30 30 80.
250 PM PST Sun Mar 5 2017 Wet, cooler and gusty this evening as a storm system moves through the region.
Strong area of high pressure along the eastern U. Easterly winds will keep temperatures from falling below the low to mid 60s along the coast, while inland lows in the mid to upper 50s are forecast.
658 PM EST Sun Mar 5 2017 High pressure along the coast will continue ridging into the area overnight then move offshore Monday afternoon.
600 PM EST Sun Mar 5 2017 Clouds will increase tonight ahead of an approaching cold front.
Otherwise, VFR conditions expected today as surface winds once again becomes breezy due to the interaction of high pressure over the Gulf and low pressure across west Texas. Light winds and cooler temperatures have allowed some fog to develop across portions of Brooks and Jim Hogg counties this morning. High temperatures today will be in upper 80s to lower 90s (except for the low to mid 80s near the coast) due to combination of abundant sunshine and a drier airmass in place.
Chattanooga Airport, TN 71 56 77 54 / 10 10 40 60 Knoxville McGhee Tyson Airport, TN 66 54 73 48 / 10 30 60 80 Oak Ridge, TN 67 55 73 48 / 10 30 60 80 Tri Cities Airport, TN 64 47 69 44 / 10 50 60 80.
/ISSUED 422 AM CDT Mon Mar 20 2017/ Warm moist southerly flow firmly in place this morning leading to a stratus deck covering most of the area north of the Highway 59 corridor.
951 AM EDT Mon Mar 20 2017 A northwest flow is in place aloft this morning as Florida resides in between a low off the New England coast and weak ridging over the south. Weak high pressure resides over the state at the surface and will remain over the region through the day. Ridging aloft will build westward over the Gulf of Mexico through the day as the low continues to move off the U. The sea breeze will turn winds onshore in the afternoon and will keep coastal areas a few degrees cooler. High pressure will remain over the waters for the next few days, with benign boating conditions expected.
As heating ensues after sunrise, this low stratus will gradually dissipate, giving way to VFR categories at all sites for the remainder of today and into at least early this evening. Otherwise, anticyclonic flow associated with a building ridge will bring warm and dry weather over the ArkLaMiss early this week.
633 AM CDT Mon Mar 20 2017 Quiet and cooler weather today with northeasterly surface flow with zonal flow aloft. Highs in the lower 60s to lower 70s, still well above normal on this first day of Spring, but definitely not as warm/hot as yesterday.
941 AM EDT Mon Mar 20 2017 High pressure over the area will move off to the east today. A cold front will move southeast through the region tonight and be followed by an arctic cold front late Tuesday into Tuesday night.
626 AM CDT Mon Mar 20 2017 Pacific high pressure will continue to build into Western and North Central Nebraska today. This will be quite necessary given the dry air at the lower levels. The snow accumulation process will have to overcome ground temperatures in the lower 40s which suggests no significant travel hazard other than accumulations of slush on the roads.
702 AM EDT Mon Mar 20 2017 There will be a chance of rain this afternoon and tonight as cold front crosses the region. Sleet/graupel have been reported in Cleveland, and have also added sleet/freezing rain to the forecast.
445 AM PDT Mon Mar 20 2017 A series of weather systems will bring cooler and more unsettled weather to the region this week. Trend back toward cooler and more unsettled weather for interior NorCal is underway. However, it will continue to be a slow process as the ridge is gradually nudged eastward by the approaching eastern Pacific trough. Snow impacts may develop across the higher passes over the northern Sierra late tonight and continue Tuesday as snow levels lower, so a winter weather advisory has been issued. Potential for scattered thunderstorms is continuing to look favorable for Tuesday afternoon in the Central Valley as frontal precip clears the valley in the morning allowing for increased surface heating as the mid/upper level dry slot moves in ahead of the upper trough as it becomes negatively tilted.
841 AM EDT Mon Mar 20 2017 There will be a chance of rain late this afternoon and tonight as an area of low pressure crosses the region. A weak upper thermal trough diagnosed across the eastern Great Lakes into the Ohio Valley earlier this morning had help cause some very light precip over the Cleveland area but has since diminished as it approached our CWA due to much observed dry air in the low to mid levels. Recent model runs have slowed down the onset of precipitation in association of the area of low pressure forecast to cross the region late today.
925 AM EDT Mon Mar 20 2017 High pressure over the region this morning will move offshore this afternoon.
/Issued 400 AM CDT Mon Mar 20 2017/ An upper ridge will prevail across the Panhandles today through Tuesday before the upper ridge shifts off to the east of the forecast area by mid week.
High pressure will continue to build over the region today, and sunny skies and light winds will prevail. Light winds are expected today as high pressure builds overhead.
Another warm day is on tap for the forecast area today, as highs warm into the low and middle 80s areawide. As heating ensues after sunrise, this low stratus will gradually dissipate, giving way to VFR categories at all sites for the remainder of today and into at least early this evening.
1121 AM CDT Mon Mar 20 2017 Temperatures through 16 UTC have been outpacing the forecast across much of western and central North Dakota ahead of the cold front that was entering the far northwest. Very little change with this update other than to blend to observed trends through 14 UTC as high pressure will continue to build across the area today. Would not be surprised that some areas are receiving a mix though as temperatures aloft cool north to south, especially over the higher terrain of the southwest as we go forward in time through 12Z. High pressure continues to build southward into the Northern Plains tonight bring CAA and clearing. Overnight lows Monday night/Tuesday morning will reach the single digits above north to the lower 20s south. Upper level ridging forecast through mid-week moderating our temperatures.
A cold front will move through with a drop in temps for the middle of the week.
/Issued 300 AM CDT Mon Mar 20 2017/ Near record warmth expected today as high temperatures soar into the lower 90s across portions of northeast Oklahoma. The warm weather will continue on Tuesday across much of the area south of a cold front, which will move into northeast Oklahoma Tuesday morning.
1251 PM EDT Mon Mar 20 2017 High pressure will remain over the region today. A cold front will cross the region Tuesday.
742 AM EDT Mon Mar 20 2017 Early morning round of elevated convection, which included a mix of rain, snow, and freezing rain, has pushed rapidly south and east out of southeastern Michigan. For this afternoon, cold front to the west will be moving east with no real solid upper level forcing for the northern two thirds of the cwa. For the southern counties, a warm front will remain nearly stationary along or just south of the border. North of the I96 corridor will have just a chance for showers with cold frontal passage as again moisture will not be as deep and forcing confined mainly to frontal convergence.
940 AM EDT Mon Mar 20 2017 High pressure will remain over the southeastern United States this afternoon keeping the weather dry over South Florida.
An approaching cold front and upper level disturbance will bring scattered showers into the area tonight, spreading from north to south.
Issued by National Weather Service Tulsa OK 1102 AM CDT Mon Mar 20 2017 Cold front has pushed into northwest OK and will move slowly southward to near a KBVO - KSWO - KCSM line by late afternoon. The strongest winds by afternoon are expected to focus from southwest to south central OK and slightly offset from the lowest humidity zone which will be located nearer the frontal boundary.
958 AM EDT Mon Mar 20 2017 High pressure across the southeast U.
1028 AM EDT Mon Mar 20 2017 High pressure will remain over the region today. A cold front will cross the region Tuesday.
Winds will shift to a northerly direction at BVO late tonight as a cold front passes, with the remaining terminals likely to see their wind shifts after 18Z tomorrow. The windiest conditions should be offset, just to the southeast, from the lowest relative humidities, and as such, the going Fire Danger Statement continues to look sufficient to handle the fire weather threat. /Issued 300 AM CDT Mon Mar 20 2017/ Near record warmth expected today as high temperatures soar into the lower 90s across portions of northeast Oklahoma. The warm weather will continue on Tuesday across much of the area south of a cold front, which will move into northeast Oklahoma Tuesday morning.
/issued 406 AM CDT Mon Mar 20 2017/ A surface warm front stretched across south central Arkansas into southern Mississippi will surge northward today across the Mid South. Very warm and humid conditions will develop with highs reaching into the lower to middle 80s. This will help to push a cold front south into northern portions of the forecast area as minor height falls spread over the front by Tuesday afternoon.
740 AM EDT Mon Mar 20 2017 High pressure will build across the area through Tuesday.
1139 AM EDT Mon Mar 20 2017 There will be a chance of rain late this afternoon and tonight as an area of low pressure crosses the region. A weak upper thermal trough diagnosed across the eastern Great Lakes into the Ohio Valley earlier this morning had help cause some very light precip over the Cleveland area but has since diminished as it approached our CWA due to much observed dry air in the low to mid levels. Recent model runs have slowed down the onset of precipitation in association of the area of low pressure forecast to cross the region late today.
930 AM EDT Mon Mar 20 2017 A ridge of High pressure will build east and crest across the region later today before weakening and sliding offshore. Dry and warmer weather can be expected today, with temperatures moderating to near or above normal for a change. The milder air will stick around through Tuesday before a cold frontal passage ushers well below normal temperatures back into the area for mid week. Low pressure may bring a mixed bag of precipitation over the weekend. A 1028 millibar ridge was draped across the eastern CONUS. This moisture starved boundary may touch off a few snow showers across the higher terrain.
The windiest conditions should be offset, just to the southeast, from the lowest relative humidities, and as such, the going Fire Danger Statement continues to look sufficient to handle the fire weather threat. /Issued 300 AM CDT Mon Mar 20 2017/ Near record warmth expected today as high temperatures soar into the lower 90s across portions of northeast Oklahoma. The warm weather will continue on Tuesday across much of the area south of a cold front, which will move into northeast Oklahoma Tuesday morning.
947 AM CDT Mon Mar 20 2017 Very little change with this update other than to blend to observed trends through 14 UTC as high pressure will continue to build across the area today. Would not be surprised that some areas are receiving a mix though as temperatures aloft cool north to south, especially over the higher terrain of the southwest as we go forward in time through 12Z. High pressure continues to build southward into the Northern Plains tonight bring CAA and clearing. Overnight lows Monday night/Tuesday morning will reach the single digits above north to the lower 20s south. Upper level ridging forecast through mid-week moderating our temperatures.
1051 AM CDT Mon Mar 20 2017 Adjusted temperatures a bit warmer this morning, especially across the eastern zones, as temperature profile is a bit warmer off the deck this morning compared to 24 hrs ago which should mix down nicely today. Despite a mid level short wave aloft, ridging/subsidence in the upper levels and very limited moisture will maintain a dry forecast today through Tue. Moisture in the lowest levels will lead to stratus/patchy fog once again tonight. Temps will generally be persistent but could see mx temps a degree or so warmer on Tue.
1214 PM EDT Mon Mar 20 2017 A ridge of High pressure will build east and crest across the region later today before weakening and sliding offshore. Dry and warmer weather can be expected today, with temperatures moderating to near or above normal for a change. The milder air will stick around through Tuesday before a cold frontal passage ushers well below normal temperatures back into the area for mid week. Low pressure may bring a mixed bag of precipitation over the weekend. A 1028 millibar ridge was draped across the eastern CONUS. This moisture starved boundary may touch off a few snow showers across the higher terrain.
1005 AM MDT Mon Mar 20 2017 Surface cold front associated with a system moving across the northern plains will make its way across the forecast area today, but with ridge holding strong aloft it will have only a minimal impact on temperatures. There will be a lull in the precipitation chances Tuesday afternoon as the upper ridge rebuilds, but due to persistent low level upslope winds and clouds temperatures will only reach the low to mid 50s. Another weak system comes over the ridge Tuesday night with scattered rain showers mainly after midnight.
516 AM MDT Mon Mar 20 2017 Surface cold front associated with a system moving across the northern plains will make its way across the forecast area today, but with ridge holding strong aloft it will have only a minimal impact on temperatures. There will be a lull in the precipitation chances Tuesday afternoon as the upper ridge rebuilds, but due to persistent low level upslope winds and clouds temperatures will only reach the low to mid 50s. Another weak system comes over the ridge Tuesday night with scattered rain showers mainly after midnight.
Under sunny skies, temperatures are about ready to cross into the lower 70s.
1052 AM EDT Mon Mar 20 2017 High pressure will build across the area through Tuesday.
Otherwise, any lingering MVFR cigs /at kmlu and keld particularly/ will gradually scour out later this evening/early tonight courtesy of impinging cold front. /issued 302 PM CST Fri Nov 18 2016/ Stg cold front movg east across nw LA attm. Such is not the case once high pressure settles in sat night with clear skies and near calm winds setting up for radiation cooling and overnight lows near the frzg mark areawide.
638 PM EST Fri Nov 18 2016 Gusty winds and dry conditions have developed ahead of an approaching cold front. This cold front will push through tonight, bringing showers and even stronger winds. Lows to range from the mid 30s far west to the lower 40s east. Mid/Upper level trof to pivot east through the Great Lakes Saturday/Saturday night. In the wake of the overnight cold frontal passage strong CAA will be ongoing Saturday morning.
The ridge axis will be right over the Dodge City to Wakeeney areas with very light winds by dawn. For Saturday, an upper level ridge will move into the High Plains with a developing lee tough. The upper level ridge will carry some increasing moisture with thickening cirrus overcast. Highs will be slightly warmer and be around 50 degrees, with mid 50s far west near the Colorado border.
With high pressure encompassing the region by Saturday afternoon, northwesterly winds will gradually become light and variable under clear skies. /Issued 302 PM CST Fri Nov 18 2016/ Cool/breezy conditions this afternoon behind cold front.
A noticeable amount of thunderstorms ongoing this afternoon to our west, along and just ahead of a cold front that is forecast to push across Alabama overnight. Saturday will be quite cooler and also a bit breezy.
An area of storms was intensifying near the Illinois/Indiana state line at 4 pm EST and was moving northeast ahead of a cold front this afternoon. Roads could get slick Saturday night as temperatures fall below freezing.
Adjusted low temperatures down a few degrees in the low lying river valley locations. Proton Previous Discussion The upper flow pattern this evening will be a large storm system off the northwest coast and a medium wave ridge over the Northern Rockies.
upper trough moving east away from the area. /ISSUED 307 PM CST Fri Nov 18 2016/ Very dry and cold air will continue to spill into the Southern Plains tonight behind a cold front. Although wind speeds will decrease substantially after sunset they will remain in the 10 to 15 mph range overnight which should keep the nocturnal boundary layer mixed up sufficiently to hold temperatures above freezing in most locations. Upper level high pressure will build over the region on Saturday and result in a sunny day but temperatures will be cooler than normal with afternoon highs generally in the 50s. Since wind speeds will be much lighter than today it will probably feel a bit warmer.
The center of the cold high pressure system will settle into the freeze watch area tonight and result in light winds, clear skies and ideal radiational cooling. However, can't rule out any freezing temperatures in the areas outside of the Freeze Warning, especially in low lying river valleys.
Cold front that moved thru the area this morning has ushered in much cooler and drier air into the region, making it feel much more like November. A pocket of lower clouds, still in the low VFR range, is dropping southeast out of far SE KS/SW MO into far NE OK/NW AR this evening. With high pressure encompassing the region by Saturday afternoon, northwesterly winds will gradually become light and variable under clear skies. /Issued 302 PM CST Fri Nov 18 2016/ Cool/breezy conditions this afternoon behind cold front.
The low will track across northern Wisconsin this evening, then start to fill as it reaches eastern lake Superior overnight.
Upper low offshore continues to push mid and high level clouds across the region this evening. Best chance for rain and higher elevation snow will be later tonight into Sat morning as a jet streak rotates around the low and across the forecast area.
Surface analysis this afternoon places a cold front from Central Illinois back through Southeast Missouri, Central/Southwest Arkansas and Northeast Texas. Regional WSR-88D radar trends show showers and a few thunderstorms occurring along and just behind the cold front. A cold front will move through the Mid-South tonight.
Cold front currently located just west of the MS river. Temps will start out in the lower 40s and will only warm into the mid 40s Plateau.
935 PM CST Fri Nov 18 2016 The cold front continues to move across the coastal waters tonight, with an associated broken line of showers and thunderstorms pushing into the Gulf with it. Cold air advection behind the front and lack of cloud cover is expected to allow overnight lows to range from the low to mid 40s north of Interstate 10, with upper 40s to mid 50s south. /ISSUED 516 PM CST Fri Nov 18 2016/ A cold front is moving through SE TX and and this feature has triggered a line of shra/tsra. Much cooler temps and breezy conditions will prevail in its wake.
516 PM CST Fri Nov 18 2016 A cold front is moving through SE TX and and this feature has triggered a line of shra/tsra. Much cooler temps and breezy conditions will prevail in its wake.
1032 PM EST Fri Nov 18 2016 High pressure will crest over the region tonight and will gradually shift east on Saturday and intensify as it moves into southern canada.
1013 PM EST Fri Nov 18 2016 A cold front will push through tonight, bringing showers and gusty winds. Cold front is just west of the CWFA this evening. This is in part to digging s/wv energy within a large scale mid level trough, along with upper level divergence from a the RR quad of an upper level jet. Much colder air will filter in behind the front, with lows ranging from the upper 30s west to the lower 40s east by sunrise. Mid/Upper level trof to pivot east through the Great Lakes Saturday/Saturday night. In the wake of the overnight cold frontal passage strong CAA will be ongoing Saturday morning.
Current thinking is to keep things around the 20 degree mark in the snow free zones while dropping into the low to mid teens where there is snow. Not a terrible mid November day on tap for Saturday as high pressure builds in. Although cooler than the first half of the month, high temperatures should be right around normal values, give or take a few degrees (low to mid 30s).
728 PM EST Fri Nov 18 2016 Mild conditions will continue tonight before a cold front brings markedly cooler temperatures for the weekend.
COLD FRONT TO USHER IN DRY AIRMASS AND FREEZING TEMPERATURES THIS Updated for the 00z aviation discussion. A squall line currently accompanies a cold front in the GLH to GWO area, but it is expected to diminish this evening with just isolated showers as it moves through the GTR/HKS/JAN to MEI/HBG corridor overnight. /EC/ Tonight and Saturday, A cold front is located across central Arkansas this afternoon with showers and thunderstorms along/ahead of the front. The highest QPF associated with this will be in the Delta, where almost 0. /28/ Saturday night through Friday morning, Big story for the weekend is the dry air and cold temperatures will be ushering in the wake of the cold front.
Cold front sweeping southward across South Texas, with timing or arrival at local airports around 3z. /issued 301 PM CST Fri Nov 18 2016/ SHORT TERM (Tonight through Saturday Night): The cold front remains the main story today and is still on track to move into the CWA later this afternoon to early this evening and push offshore late this evening. Scattered showers and isolated thunderstorms expected to develop along and ahead of the cold front.
Showers working through western Middle Tennessee at 03z will continue its trek eastward over the next several hours followed by a cold front that is currently in western Tennessee. Cold front currently working along the Mississippi River at 00z with showers and a few thunderstorms out ahead across western Tenenssee into far northwest Middle Tennessee. Front is progressive as upper trough digging down behind it continues to give it good kick this way.
512 PM EST Fri Nov 18 2016 Dry high pressure will slide farther off the Southeast Coast tonight ahead of an approaching cold front. The trailing cold front will be approaching early Saturday morning. This combined with warm advection ahead of the front will result in warmer overnight temperatures than previous nights. Amplified/negative tilted upper trough over the Great Lakes into the Mid Atlantic/Carolinas will drive a dry cold front through the area Saturday afternoon. Weakening cold advection overnight with temperatures falling into the 30s although appears to remain above freezing with strong mixing in the boundary layer.
00Z KTBW showed strong subsidence inversion near 850 mb, so this higher moisture will likely get trapped below the inversion allowing for some fog to develop in spots.
805 PM CST Fri Nov 18 2016 Temperatures across the Oklahoma Panhandle and far northwest Oklahoma are at or below freezing early this evening.