Aikyam-Lab/Synoptic-Bench huggingface dataset:
Made slight modifications of lower the PoPs for the southern Coastal Bend for the remainder of the evening as it appears the better lift associated with the short wave trough is moving northeast of the region.
The cold front is just entering northwest Arkansas. A cold front is just entering northwest Arkansas and will stall across the north on Saturday.
As next s/w approaches expect lift to increase across the region and between 05-11z will likely see heavy showers mixing in with the low ceilings.
A cold front will move into the area early Saturday morning, resulting in a NE wind shift for MAF/INK/HOB by 11Z-14Z. Meanwhile, a broad upper trough moving across the northern U. is pushing a strong cold front south.
1245 AM EST Sat Feb 10 2018 Moderate E/SE wind flow will persist through the next 24-30 hours as high pressure over the Atlantic remains in control.
/issued 256 PM CST Fri Feb 9 2018/ A strong cold front is making its way across the South Plains this afternoon.
352 AM CST Sat Feb 10 2018 High pressure stretches from northeastern MT through south central SD and central NE, with the ridge extending across the entire forecast area.
359 AM CST Sat Feb 10 2018 The longwave trough remains anchored over the central CONUS at this time. Southerly winds at the surface continue to advect relatively deep moisture into the Mid- South but a cold front has advanced as far south as the northern fringes of the CWA. Instability will gradually retreat equatorward today as the cold front moves slowly south. As the colder air filters into the northern counties tonight, rain is expected to change over to freezing rain across extreme northeast AR and the Missouri Bootheel. The most likely area for any accumulations will be along and north of a line from Walnut Ridge (AR) to Tiptonville (TN). A few bridges/overpasses could develop some slick spots, but most road surfaces should remain in decent shape.
202 AM EST Sat Feb 10 2018 Moisture will increase today ahead of an approaching warm front.
At low and mid levels, a high pressure will persist to the east of the Florida Keys for the next several days. At the surface, a ridge will extend from the Atlantic and reach the Keys today. This ridge will keep winds from the east to southeast through the forecast period.
345 AM EST Sat Feb 10 2018 Today will feature chances for snow and patchy freezing drizzle as a frontal boundary remains draped across the region.
1134 PM CST Fri Feb 9 2018 A region of high pressure will continue moving southward across our forecast area tonight with the majority of the region seeing mostly clear skies. This will allow for cooling of temperatures down into the low teens and double digits below zero across much of the Northland. Wind chills are slightly warmer than the previous night with the additional cloud cover and lighter winds.
307 AM CST Sat Feb 10 2018 Winter Weather Advisories for a light glaze from freezing drizzle early this morning in southeast Kansas and for a couple inches of snow in northern portions of central Kansas this evening. While the frontogenetic forcing does not look overly impressive, the transient lift just ahead of the mid and upper level trof axis and larger snow ratios look to support up to two inches of snowfall generally north of I-70.
955 PM PST Fri Feb 9 2018 Gusty north winds and slightly cooler on Saturday.
The advisory farther south likely will see only light amounts of snow, but given the snow covered roads, and a chance of a bit of freezing drizzle there, I will prefer to ride the advisory out.
653 PM CDT Mon Jun 26 2017 Aloft: The Westerlies were moderately amplified with a ridge over the Wrn USA. a trof over the E and cyclonic NW flow between over the Plns. This low will weaken and cont E as a trof tonight into tomorrow and arrive into MT/WY after midday. This will force the Wrn ridge to deamplify and move over the CWA tomorrow. The tail end of this trof will cross the CWA Tue night. expect the low level winds to shift and become southeasterly.
moving with impulse in broad upper trough. Broad troughing in place across much of the eastern United States this evening.
Another cool and dry summer afternoon remains in place across eastern Kentucky, with temperatures in the low-mid 70s and dewpoints comfortably sitting in the mid 40s-mid 50s. Moisture will be very limited and confined to top-down moistening, as surface ridging moves south into the Tennessee Valley. Rain chances will continue into Tuesday afternoon as the axis of the mid level trough swings through eastern Kentucky. Given steepening lapse rates owing to lower heights with the base of the trough overhead, isolated thunder chances will be in the offing until a weak cool front pushes through by mid-late afternoon and shuts off any additional chances for precipitation.
Otherwise, high pressure will dominate but begin to shift more to the east through the period with winds turning more east to southeast with time.
910 PM EDT Mon Jun 26 2017 A weak cold front will cross the area tonight into Tuesday morning.
Plenty of lift will be available tonight with a 500 mb trough moving across the area overnight coupled with a few surface boundaries in place from earlier and ongoing convection. The models differed somewhat with the higher resolution/short term models making a case for a bit of a push southward.
Sfc trof noted extending southwestward out of the GRT LKS and into the local CWA north of I80. Ongoing low sfc DPT regime should allow for lows in the lower 50s to upper 40s in most of the local fcst area. A fair weather day under a passing ridge of high pressure. light winds in the morning to increase and become south to southeast in the afternoon behind the passing anticyclone, especially west of the MS RVR.
Sufficient moisture and weak low pressure in the mid and upper level of the atmosphere will maintain at least some chance of showers developing through the night with mainly VFR conditions. /issued 251 PM CDT Mon Jun 26 2017/ SHORT TERM (Tonight through Tuesday Night): A weakness aloft persists over the west Gulf, with an inverted trough analyzed at the surface. Garden variety tropical showers and thunderstorms will be the norm, with partly to mostly cloudy skies and high temperatures ranging from the mid to upper 80s to the lower to mid 90s.
907 PM MDT Mon Jun 26 2017 Today is turning out to be the quiet day as expected with a ridge moves overhead.
Isolated showers and thunderstorms have also formed over the past few hours across eastern Iowa and northern Illinois along a secondary cold front.
600 PM MDT Mon Jun 26 2017 Aviation Section Updated Upper level high pressure ridge over the region will bring hot conditions to Montana today. Later tonight, a surface cold front will sweep across the state with a better coverage of showers and thunderstorms. The front will bring cooler temperatures with it on Tuesday.
613 PM CDT Mon Jun 26 2017 An upper level trough is currently spreading south across the region this afternoon.
752 PM EDT Mon Jun 26 2017 Long wavelength upper level trough remains in place directly over the central Great Lakes. Upper level low/cold pool (-25 C at 500 MB) sliding through southeast Michigan this evening. Surface dew pts started out in the lower 50s early this morning, but have mixed down into the 40s, limiting SBCAPES to 500 J/kg or less. However, isolated thunderstorms remain possible, especially across Lake St Clair and western Lake Erie, as warmer waters provide a moisture boost, and max negative showalter values seen tracking through that area early this evening.
/issued 411 PM EDT Mon Jun 26 2017/ THIS AFTERNOON AND TONIGHT: Frontal boundary is draped across the north Central peninsula this afternoon, pushing the ridge axis further south into our region.
Weak high pressure with Gulf Coast sea breeze front moving inland Tuesday. High pressure will remain fixed over the waters through this week and into the weekend, maintaining light winds and favorable seas.
Although the lower levels are still quite dry, enough forcing exists along subtle waves associated with the upper trough to our north to produce storms over central IL/IN this evening. Thus, think that there is some chance for lesser convection overnight over southern IN/central KY as the trough drops southeast. The southern Indiana counties could get down to the low 50s if clouds clear out quick enough toward dawn.
1017 PM EDT Mon Jun 26 2017 Aviation sections updated A surface and upper level trough will move through the area this afternoon and this evening, perhaps bringing a spotty shower or thunderstorm to portions of the area.
838 PM EDT Mon Jun 26 2017 Weak high pressure builds farther offshore tonight as a cold front approaches from the Great Lakes. High pressure will then briefly follow for the middle of the week. Anomalously strong upper trough across the Great Lakes and Ohio Valley states pivots eastward the next couple of days with gradual height falls and increasing daytime instability. Airmass gradually destabilizes on Tuesday with height falls and approaching cold front over the Great Lakes. Cold front works across the area in Tuesday evening with high pressure to follow.
932 PM EDT Mon Jun 26 2017 Upper low pressure will maintain cooler temperature and a periodic shower chance for the first half of the week. Cold troughing will keep isolated showers in play through the morning but will diminish by the afternoon with the upper trough axis to the east.
As of 19Z, an upper level trough continues to slowly push eastward across the Great Lakes region. Tuesday: high pressure will push into the Mississippi Valley by midday Tuesday, allowing return flow for the southern and central Plains. Dew points will surge into the low and middle 60s. High temperatures will rebound into the lower and middle 80s. By the afternoon, an upper trough will begin its push towards the northern and central Plains. Thunderstorms look to develop in the foothill of the Rockies along a weak cold front.
1043 PM EDT Mon Jun 26 2017 A weak cold front will push through the region overnight. High pressure will then provide dry weather through mid week. A weak cold front will move southeast through the region overnight. Lows will be chilly, ranging from near 50 north to the lower/mid 50s south. Tuesday will be dry with rather cool highs from the lower 70s northeast to the mid 70s southwest.
Midlevel clouds will increase and become overcast late tonight ahead of an approaching upper trough, and some light rain may occur Tuesday morning. With dry air in the low levels, vis and cigs will remain VFR if there is any rain that reaches the ground.
/28/ Surface ridging continues to build into the area from the NW with quiet and cooler weather persisting. /TW/ Prior discussion below: Tonight and Tuesday: Quiet, cooler than average conditions will continue to prevail over the ArkLaMiss through tonight and tomorrow. Temperatures overnight will fall to the lower to mid 60s. However, dewpoints in the low 60s will make for another pleasant day.
814 PM EDT Mon Jun 26 2017 A long wave trough over the Great Lakes and eastern Canada will deepen across the region.
1044 PM EDT Mon Jun 26 2017 A weak cold front will push through the region overnight. High pressure will then provide dry weather through mid week. A weak cold front will move southeast through the region overnight. Lows will be chilly, ranging from near 50 north to the lower/mid 50s south. Tuesday will be dry with rather cool highs from the lower 70s northeast to the mid 70s southwest.
1208 AM EDT Tue Jun 27 2017 Long wavelength upper level trough remains in place directly over the central Great Lakes. Upper level low/cold pool (-25 C at 500 MB) sliding through southeast Michigan this evening. Surface dew pts started out in the lower 50s early this morning, but have mixed down into the 40s, limiting SBCAPES to 500 J/kg or less. However, isolated thunderstorms remain possible, especially across Lake St Clair and western Lake Erie, as warmer waters provide a moisture boost, and max negative showalter values seen tracking through that area early this evening.
Precipitable water values have continued to decline on the back of a persistent north-northeast flow in the low to mid-levels of the atmosphere. This drying of the mid-level atmosphere has resulting in warmer temperatures between 850 and 700mb, and that warming has reduced overall instability.
In the middle and upper levels(700-200 mb), latest available satelitte imagery overlaid with model streamline analysis as of 800 pm depicts a prominent cold core middle and upper trough situated across the Eastern two-thirds of the United States. The base of the trough reaches down to along the Central and Eastern Gulf Coast. South of that feature, a regional scale middle and upper ridge is centered near 27 N 76 W, with the axis across South Florida. At the surface and in the lower to middle levels(Surface to 700 mb), latest marine and land observations and analysis as of 800 pm detail that a stationary frontal boundary has reached as far south as Northern Florida.
816 PM EDT Mon Jun 26 2017 The cool air will continue through tomorrow as an upper low moves slowly through the Great Lakes.
1148 PM CDT Mon Jun 26 2017 An upper level trough is currently spreading south across the region this afternoon.
736 PM EDT Mon Jun 26 2017 A cold front crosses Tuesday morning.
950 PM CDT Mon Jun 26 2017 Surface analysis this evening shows the region dominated by high pressure. This approaching high pressure system will act to keep the rest of Tuesday/Tuesday night dry with another pleasant day as this dry/cool airmass arrives.
A weak disturbance, rotating around the upper low over the Great Lakes region, will affect our area this evening and into the overnight hours.
Forecast shows clearing from the southwest overnight, then sunny and cooler Tuesday as a Pacific upper trough replaces today's ridge.
1052 PM MDT Mon Jun 26 2017 The high pressure ridge over eastern Idaho will move east as a Pacific low pressure trough moving into the Pacific Northwest coast spreading southwest winds across the area tonight and Tuesday.
630 PM CDT Mon Jun 26 2017 As of 20Z, the region is situated under northwest flow aloft with a high pressure at the surface. This high pressure will drift southeast of the region tonight allowing for southerly winds to develop. This CWA will continue seeing windy conditions on Tuesday as a low pressure system develops west of the region. Mid-level waa will have warmed temps up enough to cap off daytime convection, but as a cold front begins to push into the region from the west early Tuesday evening, expecting at least isolated to scattered coverage of thunderstorms (supercells most likely) to develop with large hail and damaging winds possible.
/issued 620 PM CDT Mon Jun 26 2017/ /00Z TAFS/ Band of thunderstorms will affect KBBD and KJCT trough 2Z-3Z as they move slowly east. MVFR stratus returns to KSOA, KJCT, and KBBD late night through late morning as a warm front moves through. (Tuesday night through Monday) Upper level ridging will strengthen over the region once again by the middle of the week, leading to hotter and drier conditions.
/issued 359 PM CDT Mon Jun 26 2017/ A generally zonal mid level flow pattern prevails across our forecast area this afternoon on the base of a broad upper level trough that extends across much of the eastern CONUS.
620 PM CDT Mon Jun 26 2017 /00Z TAFS/ Band of thunderstorms will affect KBBD and KJCT trough 2Z-3Z as they move slowly east. MVFR stratus returns to KSOA, KJCT, and KBBD late night through late morning as a warm front moves through. (Tuesday night through Monday) Upper level ridging will strengthen over the region once again by the middle of the week, leading to hotter and drier conditions.
753 PM EDT Mon Jun 26 2017 The cool air will continue through tomorrow as an upper low moves slowly through the Great Lakes.
High pressure will be centered over the Upper Ohio Valley Tuesday afternoon.
The storms are occurring ahead of a cold front that will continue to move east across the forecast area late tonight and Tuesday morning. Previous short term: Gusty southeast winds will continue to blow across northeast Montana through the evening hours as high pressure at the surface pushes eastward toward Minnesota. Again isolated to scattered thunderstorms will be possible by the afternoon hours supported by an upper level disturbance associated with an upper trough over Alberta/Saskatchewan.
1037 PM EDT Mon Jun 26 2017 A long wave trough over the Great Lakes and eastern Canada will deepen across the region.
Scattered storms also developed this eve across the lower Suwannee Valley and the far Nw zones (Ga) along the east coast seabreeze and weak short wave. A nearly stationary front will slowly move South across area waters through Tuesday night as high pressure builds to the Northwest and North.
/issued 340 PM CDT Mon Jun 26 2017/ Water vapor imagery continues to show a broad trough of low pressure over the eastern half of the US this afternoon, with a series of disturbances moving through this flow. The overall flow aloft will not change much over the next 24 hours, as this trough will remain over the region. Day time temperatures will be similar to or slightly warmer as well.
942 PM EDT Mon Jun 26 2017 A dry cold front will cross the area on Tuesday, followed by high pressure that will persist over the region through the rest of the week. Current CAM solutions are a little too robust considering current coverage across the lower Great Lakes/mid-MS Valley. High temps Tuesday upper 70s NW to the low-mid 80s southeast.
730 PM EDT Mon Jun 26 2017 An upper level trough swinging through the Great Lakes will bring a chance of showers and thunderstorms this evening and tonight. High pressure will provide dry weather at midweek with increasing precipitation chances toward the end of the week as temperatures warm to near normal. highs again in the lower to mid 70s. Tuesday will be dry with rather cool highs from the lower 70s northeast to the mid 70s southwest.
1155 PM EDT Mon Jun 26 2017 A long wave trough over the Great Lakes and eastern Canada will deepen across the region.
843 PM EDT Mon Jun 26 2017 A dry cold front will cross the area on Tuesday, followed by high pressure that will persist over the region through the rest of the week. Wly flow aloft a result of central NC being in the base of broad upper level trough will maintain fair and dry conditions tonight. The approach of a minor s/w will sharpen the trough overnight, lowering heights 30-40m. Current CAM solutions are a little too robust considering current coverage across the lower Great Lakes/mid-MS Valley. High temps Tuesday upper 70s NW to the low-mid 80s southeast.
915 PM EDT Mon Jun 26 2017 A weak cold front will cross the area tonight into Tuesday morning.
853 PM EDT Mon Jun 26 2017 A cold front crosses Tuesday morning.
Surface ridging continues to build into the area from the NW with quiet and cooler weather persisting. /TW/ Prior discussion below: Tonight and Tuesday: Quiet, cooler than average conditions will continue to prevail over the ArkLaMiss through tonight and tomorrow. Temperatures overnight will fall to the lower to mid 60s. However, dewpoints in the low 60s will make for another pleasant day.
/DL/ Tonight and Tuesday: Quiet, cooler than average conditions will continue to prevail over the ArkLaMiss through tonight and tomorrow. Temperatures overnight will fall to the lower to mid 60s. However, dewpoints in the low 60s will make for another pleasant day.
727 PM EDT Mon Jun 26 2017 Low pressure over the Great Lakes will move east tonight followed by high pressure moving through our area on Tuesday. After another unseasonably cool night tonight, high temperatures will be a little warmer tomorrow than today, but still below normal.
Chattanooga Airport, TN 62 81 60 87 / 20 20 0 0 Knoxville McGhee Tyson Airport, TN 59 77 56 84 / 10 30 10 0 Oak Ridge, TN 59 78 57 86 / 20 30 0 10 Tri Cities Airport, TN 56 74 53 81 / 10 30 0 0.
Cooler temps, dry conditions, and increasing winds to develop in the coming days. A trough of low pressure moving into the Pacific Northwest is pushing drier air over western Arizona today.
Looks to be a weak surface front/trough laid out across southern Nebraska with a few storms developing along this feature over south central/sw Nebraska. The good news with the pattern remaining active is that an upper ridge never gets to take hold, which means temps will remain close to or slightly below normal for this time of year.
1055 PM EDT Mon Jun 26 2017 Weak high pressure builds farther offshore tonight as a cold front approaches from the Great Lakes. High pressure will then briefly follow for the middle of the week. Anomalously strong upper trough across the Great Lakes and Ohio Valley states pivots eastward the next couple of days with gradual height falls and increasing daytime instability. Airmass gradually destabilizes on Tuesday with height falls and approaching cold front over the Great Lakes. Cold front works across the area in Tuesday evening with high pressure to follow.
Will not send a ZFP as the gradient across the lower parishes will grab the higher values and would be unrepresentative for some areas such as Upper Jefferson and the adjacent River Parishes. Precipitable water values have continued to decline on the back of a persistent north-northeast flow in the low to mid-levels of the atmosphere. This drying of the mid-level atmosphere has resulting in warmer temperatures between 850 and 700mb, and that warming has reduced overall instability.
528 PM MDT Mon Jun 26 2017 Today is turning out to be the quiet day as expected with a ridge moves overhead.
914 PM EDT Mon Jun 26 2017 A sharp upper level trough will move across the region on Tuesday.
736 PM EDT Mon Jun 26 2017 Upper low pressure will maintain cooler temperature and a periodic shower chance for the first half of the week. Cold troughing will keep isolated showers in play through the morning but will diminish by the afternoon with the upper trough axis to the east.
Otherwise warm and humid weather today will lead to another night of potential fog development due to surface ridging and the associated lack of mixing overnight. The circulation will progress further eastward throughout today as a weak upper ridge takes over. Otherwise, gorgeous weather is in the forecast heading into the weekend with the upper ridge in place.
Templer Previous Discussion - Upper trof over western Canada will be digging south into the northern Rockies over the next few days. Cold air filtering south of the border from high over Alberta, with Pacific moisture in the southwest flow ahead of the trof overrunning this cooler airmass and producing scattered showers this morning. Widespread rain shield expected to develop around this low as it moves east across Wyoming tonight and Friday.
626 AM CDT Thu Sep 14 2017 Upper level high pressure ridge axis passing later today with VFR and dry conditions. /issued 328 AM CDT Thu Sep 14 2017/ Today will be a couple of degrees warmer than yesterday as the axis of an upper ridge moves overhead. As the ridge moves eastward a trough will amplify over the Rockies placing the FA under southwesterly flow aloft allowing the transport of tropical moisture northeastward from the Pacific.
An upper trough brings some relatively poor flying weather to the terminals today.
1012 AM EDT Thu Sep 14 2017 Scattered showers and thunderstorms will diminish from west to east today as a weak low pressure system exits the area. High pressure will return through the day Friday, and reestablish itself across the Eastern Great Lakes region this weekend with plenty of sunshine and comfortable warm afternoon temperatures. An upper level low will weaken through the morning. By this evening the upper level circulation will be weakening, with the closed low becoming captured within the northerly jet stream. A few showers will remain along the eastern border, and end through the late evening hours as the upper level low pushes towards New England. A weak upper level low across Southern New England on Friday will gradually weaken as a weak ridge slowly builds across our region.