Aikyam-Lab/Synoptic-Bench huggingface dataset:
819 AM EDT Sun Apr 8 2018 High pressure will provide mostly sunny skies and light winds today. Temperatures however will remain cool with highs generally in the low 40s. Chances for light snow and rain will return later tonight through Monday night as a weak low pressure system moves through.
The Small Craft Advisory for the open gulf waters of AL and NWFL out to 60 nm including the lower end of Mobile Bay and the Mississippi Sound east of Pascagoula has expired. Temperatures are expected to be about ten degrees below seasonal normal for the highs.
High temps were maintained however a thicker or more persistent cloud deck may warrant slightly cooler values with later updates.
The center of a large 1022 mb area of high pressure continues to be anchored over Illinois and Indiana. Strong subsidence/upper level ridging extends southward into northern and central Alabama from this feature. Although there will not be much moisture with this low, upper energy will be fairly strong near this feature (possibly producing some showers near the low in Texas). However, some upper level forcing should still produce enough cloud cover to keep high temperatures a bit cooler in northwestern Alabama and southern middle Tennessee, despite some warm air advection today.
922 AM PDT Sun Apr 8 2018 A high pressure ridge will move over California on Monday, temporarily shifting surface winds offshore, shrinking the marine layer, and boosting temperatures.
A low pressure system will bring some rain and snow to central Indiana tonight into Monday night. Surface analysis late this morning shows high pressure in place across northern Illinois. Low pressure was found across the western plains along with a warm frontal boundary stretching from Nb in to IA and MO. This appears reasonable given the invading clouds to west along with the approaching warm front.
Temps are already warming above freezing at most sites, with a few lagging sites across our n. These cooler sites should warm up within the next hour or so. Much of our nrn areas are currently experiencing temps very near or just below the freezing mark, and a Freeze Warning will remain in effect for these areas through 8 AM.
Upper level analysis has a low off the Pacific Northwest Coast with weak ridging over the High Plains and a large scale trough extending from the Great lakes area down through the Mississippi Valley. At the surface, an area of low pressure is located across eastern Wyoming, with a frontal boundary extending northwestward through western Montana, and a lee trough extending southward along the Front Range of Colorado. High temperatures today will range from the lower to mid 30s across northwestern South Dakota to the mid and upper 40s across northeastern Wyoming and southwestern South Dakota. Overall, precipitation will be light, but wouldn't be surprised if the higher hills picked up an inch or two of snow. On Monday, an upper ridge over the western CONUS will begin to build into the area.
Temperatures have risen into the low to mid 30s across the region. Temps should continue to fall into the low to mid 20s across the region and the Freeze Warning remains in effect. With temperatures right at or slightly above freezing this should have little impact.
From the larger scale models, the 12z deterministic GFS and Canadian guidance, along with the high resolution NAM-WRF Familly and HRRR family of guidance are coincident with their solutions for light precipitation this afternoon. Weak high pressure will lose its grip on the area today, as s/wv mid level energy approaches from the NW.
High pressure moving in from the west will raise temperatures through mid week before a potent system later this week brings strong winds, cooler temperatures and a chance of precipitation to parts of the area. Breezy north winds behind a fairly weak surface cold front will continue to sweep southward through this afternoon under clear skies.
Patchy very light rain or freezing rain will remain possible at KBVO for another hour or two, with ceilings remaining in the VFR category.
A cold front pushing through the Nature coast this morning will ease down the state today. A cold front slides south through the waters today with a relaxed pressure gradient keeping winds gentle to light.
949 AM CDT Sun Apr 8 2018 The center of a large 1022 mb area of high pressure continues to be anchored over Illinois and Indiana. Strong subsidence/upper level ridging extends southward into northern and central Alabama from this feature. Although there will not be much moisture with this low, upper energy will be fairly strong near this feature (possibly producing some showers near the low in Texas). However, some upper level forcing should still produce enough cloud cover to keep high temperatures a bit cooler in northwestern Alabama and southern middle Tennessee, despite some warm air advection today.
analysis shows theta-e ridge along the outflow boundary extending north into the eastern Plains of NM with ML CAPE values on the order of 1000-1500 J/kg. Convective models thus far have been in good agreement on activity developing along the outflow this afternoon and working east with second batch of storms organizing and moving off the higher terrain later this evening. Broad-scale lift will continue across west Texas overnight as the upper low and attendant positively tilted trough axis across NM approaches. Temperatures will be cooler on Wed with combination of clouds and precip through much of the day limiting instability and the overall severe potential, however, very slow forward motions of the storm complex will continue a heavy rain potential.
151 PM PDT TUE MAY 31 2016 High temperatures will rise throughout the week as high pressure builds aloft.
Will retain previous TAF's idea of convection developing this afternoon, as upper-level ridge has begun to flatten and move eastward.
3 pm temperatures in the cwa ranged from the mid 60s in our eastern counties to the lower 80s in our west. Elsewhere, a line of thunderstorms extended from western WI to central IA along/ahead of a cold front. Ahead of the front dewpoints were in the lower to mid 60s but were in the 40s behind the front. Forecast focus on thunderstorms through Wednesday morning associated with a cold front, as we begin meteorological summer. Tonight, CAMs indicate numerous showers and thunderstorms should accompany a cold front that will move slowly across the cwa. Minimum temperatures are expected to be mainly in the lower to mid 60s. Wednesday, operational models have sped up the cold front somewhat so most of the showers and storms will exit the cwa in the morning.
144 PM EDT TUE MAY 31 2016 Aviation High pressure will bring another mostly sunny day today then a cold front will touch off some showers and thunderstorms Wednesday and Wednesday night.
253 PM CDT TUE MAY 31 2016 Shower activity just off to the west of the area has dissipated early this afternoon which looks to be a result of ridging still over the region. As the upper trough approaches from the southwest, chances for showers and thunderstorms will increase during the afternoon and evening on Wednesday.
With dewpoints in the low/mid 60s ahead of the front, surface-based CAPE of 1000- 2000 J/kg was present. This cloud cover will continue to scatter out through the day tomorrow, resulting in warmer conditions and afternoon high temperatures reaching into the upper 70s to low 80s.
Tonight and Wednesday As of mid afternoon, a warm front extended from central Minnesota southeast into far southwest Wisconsin and then into northern Illinois. For tonight, showers and thunderstorms are expected across the area as a warm front pushes slowly northward. Cold front expected to move into northeast and east-central Wisconsin. Leaned toward the warmer guidance for highs on Wednesday expecting a little more sun in the afternoon. Wednesday Night Through Tuesday Lingering convection to end over eastern Wisconsin Wednesday evening as a cold front shifts east of the area.
A low pressure system moving through the Southwest Region will continue to produce a few high based showers and isolated thunderstorms over the mountain regions of northern Arizona.
1130 AM MDT TUE MAY 31 2016 Updated Aviation Discussion Moisture wrapping around a mid/upper level low centered over western ND this morning will continue to bring showers to areas from Havre south to Lewistown and pts east this morning. Moist NW flow aloft around an upper level low moving across ND will maintain low clouds, occasional showers and MVFR/IFR conditions at KLWT and KHVR terminals through this afternoon.
339 PM EDT TUE MAY 31 2016 Ridging aloft with high pressure extending south over the area from Hudson Bay will keep pleasant weather over the Great Lakes into Wednesday. With dewpoints hovering in the low 50s tonight, low temperatures will bottom out in that range.
Seeing a good push of bulk shear out ahead of the low, or over most of eastern ND. With the low in the vicinity, will be watching SPC page closely for any hints that may indicate funnel or weak tornado formation. Also very cold temps aloft around the low, so there are some ingredients to support funnels or weak tornadoes this afternoon (but mainly west of the Red River Valley). Temperatures within dry slot should range not too far from average with much cooler values over the far north and east. Upper low will begin to drift east across the northern fa tonight. Rain associated with the low will gradually end from west to east during the day. With much cooler column overhead temperatures will range 10 to 15 degrees below average. Ridge of high pressure builds in behind departing low.
Cold front tied to upper low in the northern plains had pushed through southeast Nebraska and southwest Iowa during the early afternoon. With upper low currently in North Dakota and swinging east-northeast, biggest push of drier and cooler air has already occurred, with a gradual drying trend overnight under weak northwest surface flow.
High pressure building in over Nevada will result in mostly sunny skies and warming temperatures through the weekend.
While this round will not have the benefit of the higher instability from this afternoon, and a somewhat worked over atmosphere, would expect this activity out west to evolve into a mature MCS and move east into at least the western half of the CWA late tonight into tomorrow morning.
650 PM EDT TUE MAY 31 2016 Upper level ridge rebuilds for mid week.
Otherwise, a ridge of high pressure sits over the golden state of california with an upper trough moving east approaching the Pacific Northwest. A larger upper low is sitting over the Aleutian islands. Cyclonic flow around the low will allow skies from clearing out tonight. a weak ridge of high pressure will be in control providing mainly clear skies, light winds and temperatures closer to normal.
508 PM EDT TUE MAY 31 2016 High pressure will ridge south into the commonwealth tonight and Wednesday.
Troughing over the Desert SW, to broad ridging east can best describe the upper level pattern across the CONUS. The on-going shower activity should fade shortly after sunset this evening as the atmosphere stabilizes somewhat with cooler night time temperatures. A cold front current draped from Minnesota to the Texas Panhandle and northern New Mexico will continue moving to the SE over the next few day, and be near NW Alabama Thur afternoon/evening.
342 PM CDT TUE MAY 31 2016 Showers will gradually end tonight, leaving a cooler, but mostly dry day on Wednesday, when highs will mainly be in the 60s F. However, it appears that is mainly being driven by enhanced surface vorticity tied to the stacked low pressure system over ND, as 0-3-km SBCAPE values are less than 100 J/kg per that mesoscale analysis.
322 PM EDT TUE MAY 31 2016 Our weather will remain unsettled through the end of the workweek as a weak cold front slowly moves in from the northwest and keeps showers and thunderstorms in our forecast into the weekend.
1134 AM PDT TUE MAY 31 2016 High pressure will build over the Inland Northwest today with warm and dry weather.
144 PM EDT TUE MAY 31 2016 Upper level ridge rebuilds for mid week.
451 AM CST Sat Feb 18 2017 Upper level low continues to lift northeast toward the middle MS Valley and generally away from our region. As the upper low ejects farther away from the region this afternoon, expect these rain chances to further diminish and clouds to show some breaks with periods of occasional sunshine especially over our southwest half of the CWA. Across SE OK and SW AR, cooler readings are expected with clouds lingering and highs only in the mid 60s. An even warmer day is in store on Sunday as upper ridging sets up while southerly flow really begins to ramp up in the low levels. Highs will average around 80 degrees with warmer temps over our southern zones in the lower to mid 80s and only slightly cooler across the north with mid to upper 70s.
914 AM EST Sat Feb 18 2017 High pressure will continue to build over the area from the southeast today.
340 AM MST Sat Feb 18 2017 Current surface analysis shows frontal boundary just south and west of the forecast area, with weak low pressure over central WY. Upper level analysis shows trough just off the west coast, with southwest flow extending across the western US into the Northern Plains. Very mild weather will continue through the weekend as the frontal boundary lifts slowly north and east as a warm front today and tonight. Mild conditions tonight as warm front lifts north of the area overnight, mid 30s to upper 40s for lows. Highs will range from the 50s over parts of northwest SD and the higher Black Hills to around 70 from parts of west central to south central SD.
617 AM EST Sat Feb 18 2017 High pressure will continue to build over the area from the southeast today.
433 AM CST Sat Feb 18 2017 A highly amplified trough will move inland from the west coast today and will be in control of our weather for the next few days. The approaching upper level trough will cause a surface response with winds swinging around to the east-southeast this evening and overnight which will begin to draw up low level moisture from the Gulf of Mexico where surface dew points are currently in the 60s.
Today and tonight: Very light showers continue across portions of north and east Mississippi this early morning as an upper low moves across AR. As the upper low continues eastward toward the TN Valley, we could see some redevelopment of light showers through the day closer to the low center over the northern half of the area.
640 AM EST Sat Feb 18 2017 A wave of low pressure will pass offshore this evening and tonight.
624 AM CST Sat Feb 18 2017 Early morning surface analysis indicated that the weak cold front had settled south of the CWA in northern MO/KS.
Chattanooga Airport, TN 58 45 70 46 / 80 10 10 0 Knoxville McGhee Tyson Airport, TN 56 46 67 44 / 60 30 10 0 Oak Ridge, TN 56 46 67 44 / 50 30 10 0 Tri Cities Airport, TN 59 44 64 42 / 30 50 10 0.
/issued 342 AM CST Sat Feb 18 2017/ Cloudy, mild and occasionally rainy conditions to prevail across the Midsouth today, under a slow moving upper level low.
622 AM EST Sat Feb 18 2017 A weak cold front will move southeast into our area today and then stall out and dissipate tonight.
Closer to home, upper ridging has moved away to the north and east overnight, leaving the region in increasingly moist south to southwest flow in the middle and upper levels of the atmosphere. However, increasing cross-barrier flow at the lower levels will make it hard for any significant precipitation to make it out onto the Plains, with the best potential for accumulating snow and snow/rain mix remaining over Southwest Montana, especially toward the mountain passes along the ID/WY border.
336 AM MST Sat Feb 18 2017 Areas of mid and high clouds moving towards the CWA early this morning ahead of an upper trough that is digging off the California/Baja coast. A weak impulse moving northeast ahead of this system may bring a few showers to the higher mtns mainly this morning otherwise a mild day across the CWA today with varying amounts of mid/high clouds. The upper trough will begin lifting northeast later tonight and Sunday with another impulse bringing a few showers once again mainly to the higher mtns this evening. The main upper trough will then pass by the area Sunday evening bringing more widespread rain and snow with snow mainly confined to the mtns with not much cold air associated with this system.
Warm and dry weather is expected today and Sunday with heights across the region rising in response to a digging Pacific trough that will be approaching from the west. Southerly flow in advance of the upper level trough will allow tropical moisture to be transported into the area through the weekend.
Temperatures today will reach back into the low to mid 70s and overnight lows will be in the mid to upper 50s. Sunday looks to also be pretty nice as temps could push up into the lower 80s.
Model 500mb heights continue to carve out a relatively amplified trough across the western U. coast with a downstream ridge. The trough axis shifts northeast Sunday night becoming oriented northwest to southeast through western Montana and into Wyoming. Thermal profiles suggest a wintry mix with mainly rain in the southern zones and snow, sleet, and freezing rain a potential near the Canadian border.
1037 AM EST Sat Feb 18 2017 A wave of low pressure will pass offshore this evening and tonight.
551 AM EST Sat Feb 18 2017 Weak low pressure will approach from central Canada today and track north of the area tonight. A weak cold front will cross the region later Sunday.
The shield of rain over northern California has gradually dissipated this morning as the low pressure near San Francisco weakens and moves east. Radar images indicate these showers are dissipating rapidly as the associated upper trough axis continues to shift east of the area. A cold front will trail southwest of the low, where subtropical moisture characterized by PWAT values from 1.
This light rain is associated with upper low currently moving across eastern OK. Sunday will likely be the warmer of the weekend days. Early morning water vapor imagery is sampling the western US trough.
Water vapor shows upper low currently centered over eastern OK with an area of showers in west Central AL pushing north. Rain amounts should be generally on the low side under one quarter inch. Clouds and showers will keep highs in check today with values ranging from the mid 50s on the plateau to the low 60s toward the Tennessee River. Upper ridging will quickly follow the upper low and by tomorrow afternoon the ridge axis will be overhead. Highs for much of the area tomorrow will reach into the low 70s.
519 AM CST Sat Feb 18 2017 A deep upper level trough currently over Southern California will produce ridging over the Nation's midsection today with warm temperatures continuing.
The latest 06z guidance per NAM/GFS, as well as the higher resolution NAMNest and NMM east have initialized well with current radar trends.
A strong area of low pressure moving across the area today will produce significant valley rain and mountain snow.
718 AM EST Sat Feb 18 2017 A warm front will push east through the region today and will be quickly followed by a weak cold front this evening. A secondary cold front will approach from the north on Sunday and will drop south through the region Sunday night.
Water vapor imagery shows a dynamic trof along the CA coast digging toward Mexico, and moist southwest flow extending through the Great Basin into our region. Surface temps have risen since evening and are mainly in the mid to upper 30s, so do not see much risk of freezing precipitation. Chance of showers will increase on Sunday as northern portion of split trof approaches from the west. Better chance of rain will be in our east overnight as southwestern trof lifts up the high plains, offering a period of stronger ascent and deeper moisture closer to the Dakotas border. Temps should stay too warm for snow in our east, even over the higher hills.
/issued 433 AM CST Sat Feb 18 2017/ A highly amplified trough will move inland from the west coast today and will be in control of our weather for the next few days. The approaching upper level trough will cause a surface response with winds swinging around to the east-southeast this evening and overnight which will begin to draw up low level moisture from the Gulf of Mexico where surface dew points are currently in the 60s.
Rain chances will return to eastern Kentucky today, as an area of low pressure moves across the Tennessee and lower Ohio valley regions. Above normal temperatures will persist during the weekend as well, with highs today in the upper 50s and lower 60s expected, and in the low to mid 60s on Sunday. Tonights lows should only fall into the low to mid 40s. Winds will be out of the south or southwest at 5 to 10 mph today, and will shift to the west on Sunday after the area of low pressure moves off to our east.
814 AM EST Sat Feb 18 2017 A warm front will push east through the region today and will be quickly followed by a weak cold front this evening. A secondary cold front will approach from the north on Sunday and will drop south through the region Sunday night.
733 AM EST Sat Feb 18 2017 A warm front will lift north of the area today. A cold front is expected late tonight into early Sunday as an area of low pressure passes well to our north.
Southerly flow will keep moisture streaming into the region with dewpoints running in the low-60s across the eastern zones though nearly 20 degrees drier across the west with a bit deeper mixing/subsidence. Cloud cover will be on the increase by late evening into the overnight hours as the low-level jet begins to increase upwards of 30 knots. Ridging moves off towards the east and the pressure gradient starts to tighten so not expecting a strong decoupling or inversion to develop which would keep the fog potential lower. The dynamics are still lacking during the day, however a pretty sharp demarcation from west to east in terms of moisture will exist so a trough/dryline may develop and push eastward during the peak heating.
An upper level low currently centered over eastern Oklahoma will lift to the northeast today and swing across the Lower Ohio Valley. Showers will move off to the east this evening with dry weather then expected on Sunday as high pressure and upper level ridging begin to build in. Temperatures today will be cooler than yesterday with the cloud cover and shower.
Despite the cloud cover, the eastern half of the area has warmed into the low 60s already, and rain chances will hold off there until this afternoon. A weak cold front moves over the waters late tonight shifting winds to NW for Sun. Winds become more NE Mon and E Tue as high pressure passes N of the waters.
440 AM CST Sat Feb 18 2017 Today and tonight: Very light showers continue across portions of north and east Mississippi this early morning as an upper low moves across AR. As the upper low continues eastward toward the TN Valley, we could see some redevelopment of light showers through the day closer to the low center over the northern half of the area.
422 AM PST Sat Feb 18 2017 A slow moving low pressure system will bring scattered showers today and a slight chance of thunderstorms.
Upper lows set to push across the mid-state today.
There will be a break in the precipitations Saturday that will travel from SW to NE as well, then another slightly stronger trough will move in from the SW Saturday afternoon and overnight. Anywhere from 2 to 6 inches is expected above about 7500 ft in the San Juan mts and the highest peaks of the La Sals. Sunday a stronger trough rounds the bottom of the longwave trough over the western U. The low center should travel through the southern half of CO by sunset Sunday. Widespread warm sector precipitation is expected throughout the day, then after the trough passes the flow aloft will shift to the NW late Sunday afternoon and Sunday evening.