Aikyam-Lab/Synoptic-Bench huggingface dataset:
348 PM CST Wed Nov 22 2017 Few cirrus clouds streaming in from the north in the wake of the cold front that passed through early this morning. High pressure will continue to build in from the NW through Thursday which will keep offshore flow through the rest of the workweek.
311 PM EST Wed Nov 22 2017 Low pressure will depart the region this evening. Thanksgiving will be mostly sunny as high pressure moves into the area.
High pressure continues to build in from the northwest. low pressure continues to move out of the Gulf of Mexico and cross the Florida peninsula. VFR conditions will prevail through this evening as a northerly flow around high pressure brings in some drier low lvl air. Late tonight and into Thursday however, the flow becomes more easterly ahead of a Gulf wave of low pressure approaching the FL panhandle.
The region remains in between amplified ridging over the western states and a trough over the eastern third of the country.
Overnight lows will have no problem falling into the 30s across the entire forecast area with multiple spots reaching freezing before sunrise. After a cold start Thanksgiving morning with temperatures near freezing, the dry air in place will allow temperatures to warm quickly with diabatic heating along with a return to light southerly winds.
1132 AM CST Wed Nov 22 2017 Updated for 18z Aviation VFR conditions will prevail throughout the period as we continue to clear out in the wake of this morning's cold front.
High pressure will gradually move over the region during the upcoming week bringing a significant warming trend to the area.
340 AM CDT Sun Apr 30 2017 Unseasonably strong upper level low pressure over the eastern Texas Panhandle this morning will move into southeast Kansas later today, deepening by another 100 meters at the 500 millibar level.
A cold front will sweep east across the region late this afternoon and this evening. Cooler air will arrive, with lows around 50 tonight.
402 AM CDT Sun Apr 30 2017 At 3 AM, a cold front had crossed most of the CWA. Some elevated convection over the Hill Country could also clip parts of the western CWA but this is also expected to diminish this morning as a weak disturbance rotating around the upper low over the panhandle exits the area. The rest of today looks fantastic with cooler temperatures and much drier air working into the region. The pressure gradient will remain tight today as high pressure builds over the state and breezy northwest winds will be gusty at times. Max temps will be about 15 to 20 degrees cooler today due to cooler 850 mb temps coupled with strong CAA at the sfc.
Fair skies over the CWA this morning under upper level high pressure ridging.
A cold front will bring widespread precipitation on Monday. Will lean more toward a slower solution since the path of the upper level low is more toward the north on Monday and the trough axis will really not show much of an easterly swing until Monday afternoon.
Given the nature of the low ratio, heavy wet snow it is not clear if 3 hours of 1/4 mile or less visibility will be met, required to go with Blizzard warning.
SEVERE WEATHER AND FLOODING TODAY AND POTENTIALLY AGAIN MID Today through Tonight, Today's focus remains on the potential for severe weather and heavy rainfall, as a deep low pressure system sweeps through the central CONUS. A line of thunderstorms - focused mainly along an advancing cold front - will continue marching eastward throughout the day today.
High pressure will bring dry conditions and a strong warming trend during the upcoming week. The forecast calls for warmer high temperatures the next several days as a ridge of high pressure aloft builds over the Desert Southwest.
325 AM CDT Sun Apr 30 2017 Large closed upper low will transit northwest Oklahoma today with some lingering showers and some light snow across portions of northern Oklahoma today.
334 AM EDT Sun Apr 30 2017 An area of low pressure will occlude today as it tracks into the western great lakes. Ridgetops will also get gusty. The low level will reach 50 to 60 knots late tonight. This will likely impact ridges above 2kft late tonight with some strong winds developing.
457 AM MDT Sun Apr 30 2017 Upper level analysis has large closed low over the central and southern Plains with weak ridging over the great basin area. Skies are mostly clear across much of the northern Plains, with the exception of the cloud shield on the northern end of the upper low across eastern South Dakota. At the surface, high pressure is located across the Dakotas. As the upper low/trof shift east of the area, fast northwest flow will take over across the northern Plains.
659 AM EDT Sun Apr 30 2017 Low pressure over northeast Oklahoma this morning will move slowly northeast into the upper Great Lakes by Monday. This will result in warmer temperatures across our area today and cooler conditions again Monday.
557 AM CDT Sun Apr 30 2017 Upper low deepening over the Southern High Plains this morning driving the weather through the short term as it amplifies the flow across the country. Other than flooding, and northern drift of the boundary as a warm front making the daytime highs surge ahead of where they were yesterday. HRRR and NAM both coming in with enough of a break to see the CAPE push back over 1000-1500 J/kg with max heating later this evening ahead of the low moving NW of ILX and into the Great Lakes. Considering the rapid intensification of the low, SPC has left most of IL in a slight risk through today and this evening. Temperatures considerably cooler again with highs in the 50s for Monday.
High pressure will build over the area tonight and Monday. Cooler and drier weather is expected with low temperatures possibly dropping into the 40s across east Texas and central Louisiana.
Drier air in the lower levels has continued to affect precipitation from reaching the ground across western Nebraska. An upper level low was positioned just east of the Texas Panhandle early this morning. The upper low is forecast to track into east central Kansas by late afternoon. The upper low will lift northeast into southern Iowa. The low pressure system will be just east of the region by Monday morning.
The cold front responsible for this intense line of thunderstorms is located generally from KELD to KRSN to KIER based on latest 05Z surface plots. Behind the front, spotty light showers will remain possible this morning through perhaps early this afternoon before clouds begin to slowly scour out as dry air aloft entrains from the southwest with the associated upper level trough lifting and ejecting to the northeast away from our region. High temperatures will average around 70 degrees this afternoon in the wake of the front with slightly cooler readings over our northern zones where cloud cover will be slower to exit.
The cold front continues to move steadily E early this morning, from near a Hope and Lewisville AR, to a Greenwood LA, to just E of F17 and Hemphill line as of 0640Z.
400 AM CDT Sun Apr 30 2017 An intense upper level low continues to churn across the TX Panhandle this morning. Temperatures have fallen to near freezing across parts of SE NM, the higher terrain of W TX and even the NW Permian Basin with 30's and 40's elsewhere.
Surface based CAPES have surged into the 2500-3000 j/kg range as dewpoints have increased from the low 60s to low 70s on the south side of the front. The upper low should shift from the 4 corners region into central KS by mid morning Sunday with the dry slot beginning to edge into the western CWA. With the large amplified ridge in place over the eastern U. S, the upper low will move very slowly to the northeast through Monday.
This trough will dive southeast through Northeast Montana beginning in late afternoon today. Winds will veer to the west by afternoon The influx of warmer air will bump temperatures up to around normal for this date.
341 AM CDT Sun Apr 30 2017 Upper low deepening over the Southern High Plains this morning driving the weather through the short term as it amplifies the flow across the country. Other than flooding, and northern drift of the boundary as a warm front making the daytime highs surge ahead of where they were yesterday. HRRR and NAM both coming in with enough of a break to see the CAPE push back over 1000-1500 J/kg with max heating later this evening ahead of the low moving NW of ILX and into the Great Lakes. Considering the rapid intensification of the low, SPC has left most of IL in a slight risk through today and this evening. Temperatures considerably cooler again with highs in the 50s for Monday.
/issued 811 PM EDT Sat Apr 29 2017/ High pressure will continue to ridge across the area through Sunday and keep dry and very warm conditions in place.
A brief break is possible between the strongest isentropic lift this evening and a pre- frontal trough/weak LLJ that will push up to near the KS/MO border just before sunrise Sunday, but total rainfall amounts are still expected to exceed 3 inches across southeastern portions of the forecast area and near 2 inches from the KC metro northeastward. Although rainfall has been relatively steady, the higher amounts have resulted in areal and river flooding especially south of Highway 50, which will be exacerbated by additional rainfall this evening and again tomorrow, so have kept the Flash Flood Watch in effect through tomorrow.
High resolution short range forecast models are indicating that temperatures will indeed fall to near freezing in the Grand Valley overnight, with the coldest temperatures occurring at or around sunrise Sunday morning.
Another period of unsettled weather will begin today as a cold front crosses the region. Cold front will also bring breezy conditions across the area. Unsettled northwest flow persists behind the cold front through Monday night. highs will climb into the 60s today ahead of the cold front. Temps will be a few degrees cooler for Monday.
These showers and thunderstorms are associated with a cold front that has moved into east Texas.
307 AM EDT Sun Apr 30 2017 High pressure ridging into the forecast area from the Atlantic will dominate through today. Strong heating may help support afternoon thunderstorms but these should be isolated because of the ridging and shallow moisture. An approaching cold front tonight will be in the forecast area Monday.
300 AM CDT Sun Apr 30 2017 Strong mid level low pressure is currently located over the TX panhandle and is forecasted to lift northeastward directly over the area tonight. At the surface there was a low pressure was located in far northeast OK, and it is forecasted to drift into central KS slightly deepening in the process as the main low lifts out. An additional half to one inch of rain is expected across the area by sunrise tomorrow morning with the highest amounts in north central KS within the trowal. Monday will start cool and cloudy with some isolated showers in far NE Kansas in the early morning given the proximity of the low. These winds will decrease throughout the afternoon as the low pull further NE and ridging begins to build along the Front Range.
630 AM EDT Sun Apr 30 2017 High pressure ridging into the forecast area from the Atlantic will dominate through today. Strong heating may help support afternoon thunderstorms but these should be isolated because of the ridging and shallow moisture. An approaching cold front tonight will be in the forecast area Monday.
A ridge of high pressure will remain offshore for the next couple of days though there will be a couple of frontal systems riding over the ridge and through the area. During the day tomorrow a chance of rain showers will remain over the mountains while the lower elevations dry out.
Gusty south winds will bring warmer temperatures on Sunday. A strong cold front will push through the region late Sunday night through Monday morning. A cold front will move through on Monday.
135 AM EDT Sun Apr 30 2017 High pressure will build down into the region from Canada tonight. Cooler temperatures are expected over the area on Sunday. A large strengthening low pressure system over the Ohio valley region will lift a warm front through New England bringing another chance for rain Sunday afternoon and evening. There is definitely some high bust potential with regards to the timing of the warm front and warmer air for Sunday. I continued the trend of staying on the cooler side of guidance because of the winds from the models.
424 AM EDT Sun Apr 30 2017 Low pressure over northeast Oklahoma this morning will move slowly northeast into the upper Great Lakes by Monday. This will result in warmer temperatures across our area today and cooler conditions again Monday.
Aloft a robust low over the southern high plains troughs down into Mexico while a ridge centered off the Mid-Atlantic coast stretches across Fl to the Yucatan. At the surface a low in the Mid-Mississippi Valley trails a cold front south to northeast Mexico and has a warm front that extends east through the Ohio Valley to the NJ/DE coast. High pressure in the Atlantic. ridges west to the southeast U. with the low reaching the upper Great Lakes. while the center of the upper ridge shifts out over the Atlantic but continues to extend to the Yucatan. As the features discussed above move to the northeast or east the flow in the lower levels go from southeasterly to southerly. The approaching cold front.
408 AM CDT Sun Apr 30 2017 Deep upper level low centered over extreme northwest OK will continue to lift northeast today.
654 AM EDT Sun Apr 30 2017 A southerly flow will develop today as a warm front travels to Lake Erie. A cold front will push through tonight through Monday morning, bringing showers and thunderstorms.
335 AM EDT Sun Apr 30 2017 High pressure will crest over the area this afternoon.
Cold front Monday. Upper low with unsettled weather to end the work week. Expecting highs around 90 across most of the lowlands, with 70s and 80s at higher elevations. Cold front approaching from the west late in the period, with POPs beginning to ramp up across SE OH during the pre-dawn Monday. Cold front pushes through Monday with showers/storms.
Today's clipper will push through this morning with a weak cold front moving across the region this afternoon and evening. with cooler temperatures expected for Monday behind today's cold front.
334 AM EDT Sun Apr 30 2017 High pressure ridging into the forecast area from the Atlantic will dominate through today. Strong heating may help support afternoon thunderstorms but these should be isolated because of the ridging and shallow moisture. An approaching cold front tonight will be in the forecast area Monday.
Showers and thunderstorms with the strongest producing small hail continued ahead of an upper level trough axis early this morning.
High pressure and weak offshore flow have brought clear skies to the area. The coasts will cool some due to the early seabreeze and the vlys likely be at least as warm as ydy or maybe a little warmer due to a warmer airmass. The interior will for sure be a warmer. The upper level ridge actually strengthens a touch and the interior will see further warming.
The 00Z NAM shows some differences compared to its 18Z and 12Z runs, but still show a strong low pressure system impacting much of the Northland. High pressure ridging will loiter over the Northland this evening and Sunday morning with thin cirrus and light winds expected until late tonight. With clouds slow to expand northward tonight, lowered minimum temperatures in the Arrowhead into the middle to low 20s, a bit cooler than consensus guidance. The low pressure system is expected to transition to a double-barrel low by 12Z Monday, as the upper level low lifts into the western Great Lakes.
338 AM MDT Sun Apr 30 2017 Mid-upper low is centered near the OK/TX Panhandles with plume of deep moist flow around the northern and western extend.
closed bridges and high water. with a secondary area of showers/storms farther west along inverted surface trof. although far southeast OK remains quite warm/moist and unstable (dewpoints running in the lower/mid 70s). Rainfall will taper off later this evening and overnight as the deep upper cyclone lifts northeast into KS.
339 AM MDT Sun Apr 30 2017 Deep upper level low continues to impact the region this morning as it moves slowly east across northern Oklahoma and southern Kansas.
455 AM CDT Sun Apr 30 2017 Early morning GOES water vapor imagery showed a closed upper low centered over western OK. A downstream plume of tropical moisture extended north through the lower and middle MS River Vally. Eventually, expected a well-defined back side of the storms to form as the midlevel trof axis rotates through.
/issued 400 AM CDT Sun Apr 30 2017/ An intense upper level low continues to churn across the TX Panhandle this morning. Temperatures have fallen to near freezing across parts of SE NM, the higher terrain of W TX and even the NW Permian Basin with 30's and 40's elsewhere.
/06Z TAFS/ Elevated showers and thunderstorms with cloud bases above 6000 feet continue to develop behind the cold front as the upper level low ejects to our northwest. Once these storms push out of the I-35 terminals over the next few hours, the main weather impact will be northwest winds gusting to 25 knots through mid-afternoon tomorrow before gradually subsiding later tomorrow afternoon at all sites as the pressure gradient relaxes and high pressure moves into the area. We expect the strong pressure gradient which developed from the low pressure produced by strong convection ahead of the cold front, and the high pressure of the colder/drier air moving in behind the cold front.
The next best chance for widespread showers and some thunderstorms will be late Monday through Monday night as a cold front moves across the region. A shallow cold front decidedly slipped through most of the region earlier today. The frontal boundary overnight will lift north through the region, but aloft strong ridging will occur. Another weak embedded wave will try to move through the ridge late tonight into Sunday morning. Sunday evening, with warm front hanging roughly along the Lake Ontario counties, a wave will pass which may allow some convection to attempt skimming across the northern zones.
Almost all of the precipitation should be over by late morning as an upper level ridge begins to build again over the area. The axis of the upper level ridge moves west Monday with another weak front moving in on northwest zonal flow pattern Monday night.
The upper low centered over the Four Corners region this morning will be centered just north of the Great Lakes Monday morning. The attendant surface cold front will translate eastward across our forecast area on Monday, which is 6 hours or so slower than the NWP model runs from 24 hours ago. We expect a rather vigorous QLCS to approach our forecast area from the west Sunday night, but to begin weakening as it enters southeast AL and the FL Panhandle in the pre-dawn hours of Monday, as the parent surface cyclone begins occluding over the Great Lakes.
343 AM MDT Sun Apr 30 2017 A robust cold frontal system is currently making its way through the Northern Rockies this morning.
359 AM EDT Sun Apr 30 2017 A southerly flow will develop today as a warm front travels to Lake Erie. A cold front will push through tonight through Monday morning, bringing showers and thunderstorms.
413 PM EDT Tue Mar 13 2018 Latest WPC analysis shows a deep low pressure system off the coast of Massachusetts with an associated cold front extending southward down the mid-Atlantic. The aforementioned northerly flow has also managed to bring in a cooler airmass, as maximum temperatures have struggled this afternoon to reach the low to mid 70s across much of the area.
/18Z_TAFS/ VFR conditions are expected to continue through the TAF period as the region remains under the influence of high pressure. Winds will become light and variable tonight before becoming more east-southeast at all sites tomorrow afternoon as high pressure moves to the southeast. Surface pressure ridging continues into our area, though begins to drift to the east on Wednesday.
reducing the high rip current risk. upper level trough will help drive a dry reinforcing cold front southward through the region late tonight and Wednesday.
With ideal radiational cooling conditions in place, we have gone on the cool side of guidance with lows expected to fall into the lower to middle 20s. Highs should be a solid ten degrees warmer than what we saw today with highs ranging from the middle 50s to around 60 degrees.
Large scale troughing across the eastern US, and amplified troughing upstream over the Rockies continues to maintain northern flow over the Northern Plains this morning. Today-Tonight: Rising heights aloft as ridging shifts eastward and increasing WAA associated with developing westerly BL flow will support near to above normal temperatures again today (warmest favored in eastern locations near pine forests of MN). A weak cold front is expected to pass through the region on Wednesday bringing a shift to northerly winds by the afternoon with a few clouds.
Rather dry air in the lower levels over our area, which would indicate some virga at times. Once the showers exit, quiet weather will prevail into Wednesday as high pressure slides to our south. Western CWA should reach into the lower 50s with more of a southwest flow during the day, with mid-upper 40s across the east. Upper level blocking pattern will be in place for the next few days, as the Great Lakes low will only slowly move east. The prominent ridge over the Rockies will begin to flatten as it enters the Plains. Thus, the bulk of the warmer air beneath it will not get this far east. Our main issue will be with a piece of energy that cuts off on the west side of the ridge, across the 4-corners region later in the week.
/Issued 352 AM CDT Tue Mar 13 2018/ Weak upper trough on track to move across the Panhandles early this morning. This trough will bring cooler high temperatures across the area today, but it will also brought some light precip across the central Oklahoma Panhandle early this morning. Have retained low end POPs through the day as this trough continues to move across the area with light accumulation possible. Upper ridging is expected to dominate the pattern on Wednesday which will allow out temperatures to rocket back into the 70s.
412 PM MDT Tue Mar 13 2018 Cooler day across the area with light winds and higher humidity readings behind yesterday's cold front. With ridge axis shifting over the area on Wednesday this should help keep winds relatively light once again. Southeast corner of the state will see some afternoon breezes as southerly winds pick up ahead of the deepening lee side surface trof. and 30s and 40s for the higher mountains.
In the meantime, light winds and clear skies will allow temps to drop into the low to mid 20s tonight.
359 PM PDT Tue Mar 13 2018 The active March continues as a deep trough with a closed midlevel low drops through the Aleutians and Pacific northwest through the week. There also may be some low clouds/fog along the higher elevations near Tehachapi to start Wednesday.
220 PM CDT Tue Mar 13 2018 High pressure will bring a mostly clear sky and VFR conditions to Arkansas through Wednesday morning. Today Through Wednesday A high amplitude upper ridge will be over the Rockies today and only move into the Plains by Wednesday. This high will be over Arkansas Wednesday morning. The cooler temperatures will bring patchy frost to areas north of Little Rock this morning and over most of the area Wednesday morning.
207 PM CDT Tue Mar 13 2018 Upper ridge extending up across the Great Basin will build east into the area as the next upper low comes ashore the West Coast.
Quiet conditions for the time period with the elevated fire risk the highlight for Wednesday afternoon. As a trough of low pressure develops in eastern Colorado winds will increase out of the southwest through the day Wednesday 20-35 mph. On Wednesday a trough of low pressure at the surface will deepen across eastern Colorado as an upper level ridge crosses the central Rockies.
/issued 207 PM CDT Tue Mar 13 2018/ Upper ridge extending up across the Great Basin will build east into the area as the next upper low comes ashore the West Coast.