Aikyam-Lab/Synoptic-Bench huggingface dataset:
306 AM MST Tue Mar 27 2018 A low pressure system will exit the region today with windy conditions across southeast California and lingering chances of light showers across the higher terrain in far eastern Arizona. High pressure will then build in from the west resulting in a strong warming trend.
/issued 404 PM EDT Mon Mar 26 2018/ SHORT TERM (Tonight through Wednesday night) Southwesterly moving cold front at 20z is located from Immokalee to Fort Lauderdale, and will exit the Gulf Coast and extreme southern Florida by late evening.
242 AM CDT Tue Mar 27 2018 Wx map shows low pressure trof associated with the frontal zone from W TX over OK and northeastward, and high pressure over the Eastern U. ridging south and southwestward across the SE U. This is continuing a modest SE flow across the region, keeping temps in the lower 70s. Otherwise, mostly cloudy skies, temperatures reaching the lower 80s. The upper air pattern shows the upper level trough digging across the Western U. will move slowly eastward today through Wednesday, where the trough axis is expected to be across West Texas.
/issued 424 AM CDT Tue Mar 27 2018/ SHORT TERM (Today through Wednesday): Mid level ridging over the Gulf will fade eastward as a mid level low slowly cuts off over the southwest United States. Another round will ignite upstream on Wednesday, especially as a cold front approaches the area in the afternoon.
High pressure builds into/across southern Ky during the day Wed. Cigs are already trending to MVFR as anticipated, and as a cold front approaches from the west, moderate rain/showers can be expected to spread slowly east across the taf sites today.
650 AM EDT Tue Mar 27 2018 Periods of showers will occur as a cold front slowly approaches and then moves across the area into Wednesday.
648 AM EDT Tue Mar 27 2018 High pressure ridging over the area will continue today with northeasterly surface flow gradually becoming southeasterly.
Meanwhile, upper level ridging will continue to build in from the west. With this pattern, the wedge will break down and much warmer temperatures will return to the area. High temperatures will range from the upper 70s to around 80 south to the lower 70s north.
A low pressure system will move across Arizona through Tuesday, bringing colder weather and a good chance for rain and snow showers. As the low pressure system responsible for the instability exits the region on Wednesday, temperatures will rebound back toward seasonal normals as dry and mild conditions persist through the rest of the week. A low pressure system will bring a chance of rain and snow showers across eastern Arizona through Tuesday evening. Dry and warmer conditons will develop on Wednesday under building high pressure.
/Issued 638 PM CDT Mon Mar 26 2018/ Low clouds in the IFR range will spread south behind a cold front overnight. /Issued 539 PM CDT Mon Mar 26 2018/ An upper level low pressure system in western Arizona is forecast to move eastward tonight and Tuesday, then across west Texas on Wednesday. A cold front will move across the fcst area tonight and early Tuesday morning.
Large high pressure ridge covers the eastern CONUS and adjacent western Atlantic this morning.
207 AM MDT Tue Mar 27 2018 The region will remain on the SW periphery of a deep upper trough centered over interior Canada. A stronger western NOAM ridge topping impulse will force a vigorous cold front into the region by the end of the work week, with temperatures expected to be 15-25 degrees below seasonal averages by this coming weekend.
329 AM EDT Tue Mar 27 2018 High pressure ridging over the area will continue today with northeasterly surface flow gradually becoming southeasterly.
553 AM CDT Tue Mar 27 2018 At 3 AM, a cold front extended from the western tip of Upper Michigan to Dubuque Iowa. For tonight, a ridge of high pressure will build across the region. On Wednesday, southwest and west winds ahead of an approaching cold front will warm 925 mb temperatures into the 4 to 9C range. Meanwhile, the remainder of the area will see high temperatures ranging from the lower 50s to lower 60s. On Wednesday evening, a weakening cold front will move southeast through the area.
Most of this activity is just ahead of a cold front which is moving through the region. High pressure will start to build into the region bringing somewhat drier air into the forecast area. Temperatures will be a little cooler tonight with lows Saturday morning from the upper 50s to mid 60s. By Sunday, a warm front will lift north into the region bringing a return of thunderstorms with it. By Sunday night, a cold front will start to approach the region from the north bringing more thunderstorms.
The low-clouds should dissipate by the late morning hours.
A trough then works into the region from the northwest on Sunday so seeing better support for scattered showers and isolated thunderstorms.
553 AM EDT Sat Aug 5 2017 A trough will remain near the coast through the weekend. A cold front approaching from the northwest will be near the forecast area today. The front will move back northward as a warm front Sunday. Early this morning: There will be a continued chance of light showers ahead of the approaching cold front. Cloudiness and mixing should help hold up temperatures and therefore leaned toward the higher temperature guidance. The stalled frontal boundary in the area will retreat northward as a warm front on Sunday. Low temperatures both tonight and Sunday night are forecast in the lower 70s.
Cyclonic flow aloft with a curved jet max, was developing a band of showers and thunderstorms behind a cold front over southern and central Montana.
Otherwise, light winds will gradually veer around to the ESE or SE with time as a warm front lifts north through the state on Saturday. Tonight Through Sunday The cold front has made it's way through most of the CWA as of early this Thu afternoon. this front will lift north on Sat as a warm front.
404 AM CDT Sat Aug 5 2017 Central Illinois is right in the middle of a high pressure ridge over the Midwest in the wake of cold front that has made its way down into the south and southeastern portions of the country. Showers/thunderstorms and cloud cover will keep the highs on Sunday in the low 70s.
High pressure will continue to dominate the weather over the region heading into the weekend. Temperatures will be a little cooler over the weekend thus the heat advisory has been cancelled. An upper level ridge will continue over the region through the next 24 hours.
Otherwise, an area of low pressure moving off the coast of northern California will help to bring temperatures down a few degrees across the forecast area. Temperatures will be around normal or a few degrees above normal, but cooler compared to the last several days.
Flat ridging will remain parked to our south and west keeping unsettled northwest flow in place. Speaking of peak heating, models continue to trend downward with temperatures to start off the week as a cold front backs westward over the divide.
246 AM MDT Sat Aug 5 2017 Current surface analysis shows low pressure over southeast WY, with frontal boundary stretching from north central WY to eastern CO. Highs will be in the 70s and lower 80s each day, with today looking to be slightly warmer than Sunday. Potential for severe weather later on Sunday looks minimal at this point, with less instability, good deal of clouds, and slightly cooler temps.
With a bit more sunshine and a slightly warmer boundary layer, highs today are expected to be in the 70s across the region. Highs will be similar to today, generally in the lower to middle 70s under mostly cloudy skies.
158 AM EDT Sat Aug 5 2017 A cold front approaches from the west tomorrow and will cross the state Saturday night.
127 AM EDT Sat Aug 5 2017 A slow moving cold front will combined with surface heating and instability to produce additional showers and thunderstorms this afternoon and evening. before much cooler and eventually drier air arrives by Sunday.
On Sunday, a cold front pushes through the region, bringing more chances for thunderstorms.
A broad upper level trough continues across the eastern U. The trough will, however, lift away as we work through the daylight hours. Nevertheless, surface ridging south of the area will continue the onshore flow we have been seeing which will maintain the tropical air mass. A cold front will also approach from the northwest. The will still be sufficient clouds and showers to keep max temps below normal with most areas reaching the mid to upper 80s as opposed to the lower 90s we typically see in early August.
Thus, have placed the highest rainfall totals generally along and south of the Missouri River. Unseasonably cool temperatures will persist through the forecast period, with the highest readings not expected to exceed the lower 80s.
Min temps will be in the upper 40s north, to the lower 50s south. Because of the moisture in the low levels, there will be some morning fog Sunday morning across most areas.
For the most part will see much warmer temps today with breezy south winds and increasing humidity. Storms are likely to develop over the high plains and grow into a forward- propagating MCS that will move into eastern OK late this evening and continue southeast overnight.
expect highs today very close to yesterday's highs and lows tonight mainly in the lower to mid 70s.
Although the flow aloft will remain fairly weak, steep low/mid level lapse rates in a band of convergence in the vicinity of a slowly strengthening lee side trough will be enough to trigger thunderstorm development late this afternoon across the high plains of eastern Colorado with a few storms potentially drifting into west central and southwest Kansas later this evening. Temperatures will not be as cool tonight as a prevailing southerly flow draws slightly warmer air northward, not to mention marginal moisture advection. Lee side troughing will strengthen Saturday turning winds more southwesterly through the day and reinforcing warm air advection into western Kansas, pushing high into the lower to mid 90s(F) mid to late afternoon.
359 AM EDT Sat Aug 5 2017 High pressure will skirt across the southern forecast area today, bringing cool and dry conditions, though a stray shower is possible in northern Ohio. Mostly clear for the southern half of the forecast area, but with WNW flow on the northern edge of the high pressure skirting through the southern Ohio Valley, enough lingering moisture to result in cumulus, even a couple hours of mostly cloudy. Considering the abnormally dry atmosphere needed to be overcome to bring precipitation with the approaching inverted trough, have slowed rainfall onset a bit to late morning Sunday, with western half of forecast area seeing scattered showers by 00z Sunday.
A few of your typical cool spots will probably start out in the low 50s! Looking at record lows in the low to mid 50s in most spots, we won't be too far from them. Zonal flow aloft void of any mentionable features combined with high pressure at the surface will yield a dry, pleasant day with temps below normal. Overnight lows will still be cool, although a bit warmer than what we saw this morning. An interesting setup for Sunday evening/night as mid to upper level speed max moves through the parent trough across the mid Mississippi and Ohio Valleys. Best chance for a few near surface based storms would be over southern KY south of the warm front, but best sheared profile would be over southern IN/central IN in the more elevated environment north of the triple point.
202 AM EDT Sat Aug 5 2017 A trough will remain near the coast through the weekend. A cold front approaching from the northwest will be near the forecast area today. The front will move back northward as a warm front Sunday. Early this morning: There will be a continued chance of light showers ahead of the approaching cold front. Cloudiness and mixing should help hold up temperatures and therefore leaned toward the higher temperature guidance. Weak front/trough to lift to our north as a warm front tonight and Sunday. A wave of low pressure will ride along the front just to our north Mon/Tue. Cold front moving through the central Appalachians overnight will push into the forecast area on Saturday.
The 00z KMFL sounding continued to show abundant dry air in the midlevels, and this will continue to remain the case today with deep layer high pressure overhead. Forecast heat indices look to be a few degrees cooler than recent days, with most areas still well above 100, but generally in the low 100s vs. High temperatures will range from the low to mid 90s, with a few upper 90 readings possible in inland Collier County. Deep layer high pressure ridging will remain in place allowing for continued east/southeast flow.
Well defined sw disturbance over srn SK within wrn extent of larger scale trough axis extending across much of Canada will shear sewd this period as lead disturbance lifts out newd through ern QB. Only potential fly in the ointment this otherwise tranquil period is potential for embedded upstream small disturbance over ern MN/wrn WI to spark an isolated shower or two through mid morning over nw zones before subsidence ensues and low level thermal trough/moisture collapse.
300 AM EDT Sat Aug 5 2017 Mainly dry weather is expected through Sunday under high pressure.
This low pressure and LLJ will be the driving force for a potential dangerous hydrological event over the region. PWAT values will increase to greater than 2" with a 45-50kt LLJ providing plenty of lift along the elevated warm frontal boundary. This low is expected to shift east Sunday morning pushing the majority of the rain out of the area by Sunday afternoon.
533 AM EDT Sat Aug 5 2017 Mainly dry weather is expected through Sunday under high pressure.
633 AM EDT Sat Aug 5 2017 A trough will remain near the coast through the weekend. A cold front approaching from the northwest will be near the forecast area today. The front will move back northward as a warm front Sunday. The stalled frontal boundary in the area will retreat northward as a warm front on Sunday. Low temperatures both tonight and Sunday night are forecast in the lower 70s.
Stratocumulus field has been quite prevalent over the northeast half of the forecast area, as a deep upper trough edges eastward near the Illinois/Indiana border. The western sections of the CWA have been partly to mostly sunny through the day, which has allowed temps to reach the lower 70s. The winds will settle down around sunset, as the low starts to pull eastward and the high builds toward southern Illinois, and the clouds will move out this evening as the trough exits. Despite that, it will be warmer than today, mainly near 80, though dew points remain in the comfortable 50s. The ECMWF has more of an eastward component, riding more along the surface warm front, which would place its heavy rain axis more squarely in central Illinois.
449 AM EDT Sat Aug 5 2017 Things are settling down with high pressure settling toward the area. Nam shows a 500 mb trough over New England with more troughing in the upper Great Lakes 12z Sun. This troughing remains throughout the forecast period into Tue morning. In the extended, GFS and ECMWF show a 500 mb trough in the Canadian Prairies 12z Tue which digs into the upper Great Lakes on Wed. This trough remains over the area into Sat with it becoming more amplified on Sat. Temperatures look to be slightly below normal for most of this forecast period as a cold front moves through on Wed and then stalls out south of the area through Sat. High pressure will build into the Upper Great Lakes tonight as low pressure departs into Canada.
645 AM EDT Sat Aug 5 2017 High pressure over the Ohio Valley will promote stout westerly winds for the balance of the day. However at that time, should be just enough low level moisture and instability with the thermal trof hanging on over the area and weak cyclonic flow to get scattered to broken cumulus to develop.
238 AM EDT Sat Aug 5 2017 High pressure will skirt across the southern forecast area today, bringing cool and dry conditions, though a stray shower is possible in northern Ohio. Surface and upper low now over Quebec with associated clouds pulling ENE as the low pivots NE away from the area.
/Today through Tonight/ 8z objective surface analysis shows a warm front over the High Plains with a broad, weak PV anomaly moving east-southeastward over Nebraska. Meanwhile, low pressure over southeast Wyoming will drop southeastward into Kansas later today as the PV anomaly reaches the state.
306 AM CDT Sat Aug 5 2017 High pressure remains entrenched across the Mid South this morning and will keep dry and seasonably cool temperatures in place today. A surface warm front will lift north in response to this upper system with much higher humidity levels building over the region. A few strong storms will be possible Sunday afternoon and evening across the region as deep layer shear along the southern periphery of the trough combines with increased surface instability.
Highs are expected to reach the middle to upper 90s for most of the area, with upper 80s expected across the higher terrain. Isolated to scattered thunderstorms will also be possible today, with the best chance existing across the higher terrain and immediately adjacent plains. There is also potential for storms across northern zones as additional storms develop off of the higher terrain in New Mexico and drift eastward. Sunday continues to look like the hottest day of this forecast, with temperatures at least a couple degrees warmer than today areawide. Model guidance has sped up the arrival of the next cold front, with the initial wind shift expected across far northern zones as early as Sunday evening.
However at that time, should be just enough low level moisture and instability with the thermal trof hanging on over the area and weak cyclonic flow to get scattered to broken cumulus to develop.
A cold front will cross the area early this morning. High pressure builds over the area through early Sunday.
1229 AM CDT Sat Aug 5 2017 An upper low to our northeast will continue to track eastward, which will put us into consistent northwesterly flow aloft as we head into this weekend. This evening, thunderstorms are expected to develop across western Nebraska and track towards the area as the low-level jet veers into the area.
Towards the surface, an area of low pressure will intensify across eastern Colorado as the day progresses leading to breezy south southwesterly winds across the area. A cold front will then move through the CWA this evening shifting winds to more of a northerly direction. As for temperatures, highs today look to reach into the lower 90s with lows tonight ranging from the lower 60s across west central Kansas to upper 60s across south central Kansas.
405 AM CDT Sat Aug 5 2017 Cold air aloft, upslope moisture advection and a thermal ridge across the Cntl Rockies appear to be fueling thunderstorms across Wrn Neb this morning.
Showers and thunderstorms starting to develop at this early morning hour, as the low level jet continues to settle into its southwesterly fetch and continues to increase in speed. Of concern is considerable instability and strengthening shear that develop, along both the warm front and eventually the dryline and triple point somewhere over central Kansas late this afternoon. The initial activity through mid day appears to be driven by the LLJ and isentropic lift converging over the mid level front, which then later becomes reinvigorated by the strengthening warm front lifting out of southern Kansas into our southern CWA, as well as from the front sliding southwestward from Nebraska and reinforced by outflow winds from daytime convection.
A relaxed high pressure ridge moving across then north of the waters will bring moderate southeasterly breezes.
Lee trough transitions east through Saturday and increasing WAA will support High temperatures returning to near normal (around 90F) by Saturday afternoon. At the start of the period, an upper ridge to the southwest and troughing over southeastern Canada places the High Plains under northwest flow. However, it does appear that the potential for stronger storms returns mid to late week when a cold front pushes across the High Plains.
Drier conditions are expected on Sunday, with only isolated storms across the higher terrain.
147 AM EDT Sat Aug 5 2017 High pressure will build into the region beginning tonight in the wake of a cold front pushing east of the area. The high will move across the region through the weekend.
The outflow associated with the MCS has helped push a cool front across the High Plains and into Colorado. For tonight, models show a rather potent upper level trough digging south with an associated jet aloft.
113 AM EDT Sat Aug 5 2017 A slow moving cold front will combined with surface heating and instability to produce additional showers and thunderstorms this afternoon and evening. before much cooler and eventually drier air arrives by Sunday.
Weak low pressure in southern Canada loses its influence over eastern Idaho weather today as it continues tracking eastward and away from the Gem State. ridge then builds northward and shift the precipitation band by Sun farther into Wyoming and away from the forecast area.
For tonight, a warm front appears to set up to our south across KS and MO.
322 AM CDT Sat Aug 5 2017 Southerly surface flow on the backside of the high pressure is beginning to surge northward into the area, increasing moisture and cloud cover across the region, as depicted in the IR satellite imagery at 07Z. Isolated showers and thunderstorms are quickly developing across south central South Dakota on the nose of the low- level jet, and WAA, along with the passage of the upper level jet north of the FA. Today will be a dreary and cooler day, with mostly cloudy skies.
As the short wave approaches, showers and storms will slowly begin to move into the region from the west on the nose of the low level jet. Additionally, the strength of the low level jet and moisture advection today may allow for some strong to isolated severe thunderstorm development this afternoon. There will be a rather tight temperature gradient across the region today as well with locations across central Missouri and the lakes region only reaching the lower 70s for highs this afternoon while areas across southern Missouri climb to near the 80 degree mark.
, unfavorable orientation and position of the cold front).
Dry and quiet weather is expected for tonight as high pressure moves into the region. The combination of weak winds, low humidity, and clear skies will allow temperatures to drop into the low to mid 50s across central Indiana, which would be the coolest night in over a month.
This coincides with a slow-moving cold front which continues to settle into the ArkLaMiss region early this morning.
High pressure over Missouri will move east into the Ohio Valley today. Meanwhile, developing low pressure over the Plains will turn low level flow to the south across much of western Missouri. Low level baroclinicity will push east today as the low deepens and the high continues moving away from our area. Still think that the combination of strong mid level ascent provided by mid-level trough moving across the Midwest moving over sustained low level moisture convergence will cause numerous showers and thunderstorms over central Missouri.
This will allow a pseudo warm front to develop across far North GA and act as the focus for enhanced shower and thunderstorm activity.
Looking at wind directions and dewpoints from the 08Z ob plot, the cold front stretches from near Starkville to Albertville to Chattanooga. Drier mid level air and weak upper level ridging across the Tennessee Valley will suppress much of the convection to areas south of I-85. Deep moisture will quickly return northward on Sunday in response to an upper-level trough approaching the Mississippi River Valley. This system will induce a broad area of low pressure across the Southern Plains with southerly low-level flow encompassing most of the Southeast CONUS.