Aikyam-Lab/Synoptic-Bench huggingface dataset:
959 AM EDT Sat May 20 2017 High pressure in Canada will slowly build into the area through the weekend.
Chances of rain will linger across mainly the southeast half of the state tonight, with drier air building into the north/west behind a cold front. This will be ahead of a cold front pushing into the state from the west.
1022 AM MDT Sat May 20 2017 Latest analysis shows the deep closed low is currently centered over swrn Nebraska with bands of precipitation rotating around the low and into parts of western and central South Dakota. The low pressure system will move slowly eastward today, reaching northeastern Nebraska by early evening. The rain will gradually shift eastward today as the low moves away from the forecast area.
A scattered to broken line of SHRAs and TSTMs moving east through the Hill Country will expand and move southeast during the morning hours as a cold front enters the region. 90/I-10 as the actual cold front moves into the area.
625 AM CDT Sat May 20 2017 Strong upper low will continue to lift northeastward today and tonight right across our eastern zones as evidenced by upper QG forcing. Typical for a mature cyclone, the shower activity will become a bit more scattered on the southwest flank of the occlusion as the day progresses, especially from Sioux City to Storm Lake, and northward to Sioux Falls and Yankton. Despite the high pops in the trowal locations, opted for an occasional wording to the showers where categorical pops are present today, as the radar is showing a rather intermittent rain regime. Warmed up the lower pop areas forecast for this afternoon, basically in northwest IA and extreme southeast SD over guidance values.
1235 PM EDT Sat May 20 2017 Shower and thunderstorm chances will increase by Sunday afternoon as moisture increases ahead of an approaching cold front.
The combination of warmer temperatures aloft along with meager sfc boundary development will limit the potential for pcpn development today. Lows will generally range in the low to mid 70s. High pressure ridge axis will remain north of the area, with onshore winds decreasing slightly through tonight.
1005 AM EDT Sat May 20 2017 Hydro A low pressure system developing in Kansas will track northeast through tonight. A cold front associated with this storm will push eastward through Lower Michigan Sunday morning.
Upper low easily discernible on IR sat imagery this morning over southwestern Nebraska. Starting cooler and that cloud cover has resulted in a major drop in the high temps for today.
An upper level low over the central plains will lift northeast into the eastern Dakotas and Minnesota by 12 UTC Sunday. For highs today we leaned toward a MOS based forecast with temperatures a little warmer than yesterday in the west, about the same north central and a little colder in the south central, closer to the approaching upper low. This lowered them from the given guidance but did not drop off as drastically as the HRRR/RAP did this afternoon.
High pressure aloft will build across the western states and bring a warming/drying trend through the middle of the week. The upper low across the upper midwest and ridging across the eastern Pacific will leave the Great Basin under a generally stable north-northwest flow through this evening. The low-level forcing will dissipate by late morning, leaving most of the remaining convection tied to the higher terrain of northern/central Utah during the afternoon through early evening. The axis of the rather strong upper ridge will remain west of Utah during the first half of the upcoming week.
319 PM EDT Thu May 25 2017 An upper-level low pressure system centered across eastern Kentucky will slowly depart the this evening and overnight. Elsewhere to the south, breaks will allow highs to peak in the low to mid 70s. This NW flow and cloud cover to the north will linger overnight, resulting in some gusty winds along the Blue Ridge and Cumberland Mtns along the KY/VA and TN/NC border across upper east Tennessee. Clouds will quickly break up by late tonight into early Friday morning as high pressure and drier air builds into the region.
With southwest flow from the surface through the upper levels, the thermal ridge will intensify over the area.
The upper ridge axis will shift east tonight with nearly zonal flow aloft expected tomorrow. 850mb temps will be slightly cooler Friday however modest west winds will continue at the surface so another hot day is expect. Regardless, think there is still time and will let the High Wind Warning stand for this area.
Windy and relatively cooler conditions are forecast across northern Arizona through Friday. Lighter winds and a warming trend are in the cards for the weekend as high pressure builds in from the west. Northern Arizona remains in a dry and windy weather pattern today with a broad trough of low pressure encompassing much of the western U. The trough axis will gradually rotate through the Great Basin today through Friday keeping us dry and breezy.
SHORT TERM (Tonight through Friday Night): 500mb ridge across the central United States this afternoon will begin to move eastward tonight into Friday as a 500mb subtropical ridge develops across northeast Mexico and the Rio Grande valley. This will continue to provide subsidence across the CWA even as an onshore flow continues to increase across the lower Texas coast tonight into Friday.
Trowal on back side of upper low in southern Saskatchewan continues to wrap some light showers into our cwa. Satellite imagery shows western portion of split trof dropping into eastern Oregon.
An upper ridge centered near 135w will gradually push east towards our area as the upper trough departs and moves east. At the coast, the thermal trough will weaken tonight and a coastally trapped wind reversal is expected to take place allowing marine stratus to push northward through Brookings Friday morning.
Since the lift is weak and high pressure continues to build in from the northwest, rain amounts should be light for most part. Will continue to favor partly cloudy skies over west farther away from the low pressure system and closer to the high pressure/dry air over northern Ontario. Temps aloft warmer than Wed and better chance at seeing some sunshine, so expect decent warming trend today compared to last couple days. Coolest readings in the low 50s will be near Lk Superior with persistent NE-NNE flow but otherwise expect highs well into the 60s if not reaching 70 over interior west. Instead the high pressure ridge moving into western U. Friday night: A weak trough/cold front is expected to slide across the U.
Temperatures reached into the low to mid 80s. A ridge of high pressure from south Texas to Iowa prevailed with upper level troughing across the eastern and western United States.
1044 AM PDT Thu May 25 2017 Cooler than average temperatures are expected again today, with scattered showers and a few thunderstorms. Strong high pressure will build over the region this weekend, bringing dry weather and warm temperatures for Memorial Day.
Good radiational cooling will result in cooler than normal temperatures tonight. Lows will be in the low/mid 50s inland to the low 60s along the coast. Highs on Friday will be warmer with highs reaching near 90 degrees inland and low/mid 80s at the coast where an afternoon seabreeze will develop.
211 PM EDT Thu May 25 2017 The upper trough axis will push east of the forecast area this evening.
There could still be some additional shower development along and east of the Red River Valley this afternoon, so kept the low pcpn chances we had going in these areas. Additionally small chances for a few light showers will persist through the day and evening as these disturbances eject out ahead of the main system, a strong stacked surface/upper low in southern Saskatchewan.
A weak upper level ridge will move out of the Plains today with an upper level trough digging into the Intermountain West. Towards the surface, an area of low pressure will be found across eastern Colorado this morning shifting eastward as the day progresses. Meanwhile, a cold front currently across Wyoming will slowly ooze southeast into the western Kansas tonight. As for temperatures, highs today look to range from the lower 80s across central Kansas to lower 90s across southwestern Kansas. Winds will shift back to a southerly direction Friday as an area of low pressure redevelops across southeastern Colorado.
A deep upper level trough will gradually move eastward across our area today with westerly/northwesterly flow in its wake bringing progressively drier air into our region. Cool air advection in the wake of the cold front will lead to very pleasant temperatures for late May in our area, with morning lows in the upper 50s to lower 60s and highs ranging from the upper 70s to lower 80s.
A line of isolated showers and storms extended near a warm front aloft north to south from the central Dakotas through Central Nebraska. An upper level low in southern Saskatchewan will pivot slowly east today as the upper trough extending south from the low pushes east into the Northern and Central Plains. This will push a weak cold front slowly through western nebraska today. In the northwest slightly cooler today near 70.
Friday will be cooler across the reigon with a threat for scattered showers and isolated thunderstorms for mainly northeast Nevada. High pressure will rapidly build into the region for the weekend with temperatures warming into the 70s.
647 PM EDT Thu May 25 2017 Unsettled conditions will continue through this evening as an upper level trough crosses the local area from the west. Warmer temperatures and chance for showers and thunderstorms will return over the weekend. A cold front will approach from the west on Memorial Day. Dry slot continuing to fill up w/ BKN CU and developing (SCT) tstms as an upper level trough enters the region. Other than possible ISOLD SHRAs and VRB clouds far NNE locations early Fri as upper level low is slow to reach New England. Weak ridge aloft nudges into the region from the WSW Fri night into Sat. Lows from the u50s NW to the low 60s SE.
150 PM EDT Thu May 25 2017 An upper low pressure system continues to pivot away from the region allowing showers to push away during the early overnight. Scattered showers are once again possible Friday afternoon as a low pressure system approaches the region.
/Issued 415 AM CDT Thu May 25 2017/ Deepening surface trof will lead to increasing west and southwest winds today, with a few locations topping out near 100 degrees Fahrenheit. Models not in good agreement regarding timing of cold frontal passage tonight and Friday.
1259 PM CDT Thu May 25 2017 WV imagery this morning showing revealing a well amplified upper ridge building into the nrn/cntrl Plains with a stout vort max in southwestern Canada moving along the U. Both HRRR/RAP13 suggest a series of impulses/cold pockets associated with the northern tier upper low will contribute to popping off a few showers mainly this afternoon and evening as steepening mid level lapse rates envelop the region.
329 PM CDT Thu May 25 2017 Upper level trough, bringing mid level clouds and scattered light showers/sprinkles east in the region this afternoon, will move east into the evening. At the surface, a trough will also push through tonight bringing winds around to the west.
But it will remain rather dry through the day as dew pt temps will continue to be in the low to mid 60s until Friday evening when southerly winds will begin to bring the warm muggy conditions back.
358 PM EDT Thu May 25 2017 An area of low pressure will push east of the region this evening. An area of low pressure will push east of the region this evening. A low pressure system will begin to quickly move towards the area Friday evening into Friday night. Weak cold front will be laying out across the region at the beginning of the period.
The cold front producing this activity will push through South Florida through tonight, and will keep generally cloudy skies, rainy periods and brief gusty winds lingering probably until Friday morning.
A trough of low pressure will bring breezy to windy conditions with a modest cooling trend into Friday. Less wind will occur this weekend and warmer temperatures will return early next. A low pressure system moving through the northern tier of states, combined with high pressure aloft to our south over northeast Mexico has tightened up the gradient across the forecast area today and expect this trend to continue through Friday.
228 PM EDT Thu May 25 2017 A large and deep area of low pressure over the region will move east and away this afternoon. A ridge will set up in its wake for tonight.
1227 PM CDT Thu May 25 2017 Upper ridging has been building eastward into the Mississippi Valley overnight with deep subsidence through the atmosphere. After any fog dissipates this morning, a very pleasant day is expected with light winds as the ridge axis slides east.
331 PM CDT Thu May 25 2017 After cool start to the day, rapid warmup is underway with temps running 10-15 degrees warmer than yesterday.
105 PM EDT Thu May 25 2017 A deep low pressure system will move across the region this afternoon through tonight, bringing periods of -RA to KTRI and KTYS and the potential for reduced MVFR vis/cigs and some gusty winds at each terminal. While the winds will die off after sunset, the low clouds and MVFR cigs/vis will linger at KTRI for most of the night (while low VFR stratus lingering at KTYS).
241 PM MDT Thu May 25 2017 Winds will gradually diminish this evening as low pressure in Saskatchewan moves off to the east. Drier and warmer conditions move in for the holiday weekend with temperatures trending above seasonal averages.
The high pressure system over the region that produced above normal afternoon temperatures will weaken tonight as several weather systems move into the western states.
a cold front is progged to reside from extreme Southeast KS into Central OK early in the day sinking south away from the area by afternoon. The NAM & GFS would support other elevated storms developing along a warm front as it mixes north late Friday night/early Sat across mainly Southeast KS.
148 PM EDT Thu May 25 2017 Slow moving low pressure will keep rain in the forecast through early Friday. Rain chances return for part of the weekend with another area of low pressure. In line with SPC outlook, any isolated severe risk will be mainly limited to areas along the ridges, along the edge of more favorable but fading deep level shear. Another area of ascent and deep layer moisture is progged to track across the region tonight as the low begins to drift E of the area, with increasing POPs for showers.
308 PM CDT Thu May 25 2017 Skies are mostly sunny across the forecast area this afternoon with temperatures generally in the low to mid 70s. High pressure is centered over the northern Gulf of Mexico at this time. The high should not move much tonight leaving continue dry weather over the region. On Friday, a warm front will move through the forecast area during the morning hours. Temperatures will be warmer than today with highs mainly in the 80s. By Friday night, a cold front will approach southern Missouri and northwest Arkansas.
Winds will become breezy later this morning into the afternoon as low pressure across west Texas interacts with high pressure across the Gulf of Mexico. /issued 440 AM CDT Thu May 25 2017/ SHORT TERM (Now through Friday): A 500 mb ridge centered over central Mexico will provide subsidence across Deep South Texas and the Rio Grande Valley through the period. The pressure gradient will strengthen today as low pressure across west Texas interacts with Gulf high pressure. High temperatures Friday expected to be a few degrees warmer than today, mainly in the 90s with a few locations reaching the century mark across the west.
/Issued 300 PM EDT Thu May 25 2017/ An anonymously deep upper level low [at least for this time of year] will continue to pivot toward the northeast through the short term. Residual shower activity associated with this low has diminished this morning across the area, thanks to sufficient subsidence.
A cold front will stall over central Utah today. The next upper trough will move across the area Friday.
350 PM EDT Thu May 25 2017 Upper level low over Ohio Valley will move east across the area bringing chances for showers and storms through Friday. Well defined upper level vort max rotating through the base of the parent upper low bringing a shield of light rain through the Tri State area and coal fields. With the upper low passing this evening and the 500mb height gradient sharpening in its wake, expecting winds to increase tonight with ridge and mountain top gusts in the 25-35kt range. Temperatures should be significantly warmer over the Tri State and coal fields/southern mountains tomorrow with a better chance to see sun.
442 PM EDT Thu May 25 2017 The upper trough axis will shift farther east of the forecast area tonight.
1203 PM MDT Thu May 25 2017 Today an upper level trof will be over the northern Rockies, resulting in westerly flow aloft over southern CO. A cold front is expected to stay north of southeast CO through the afternoon and then move south into the area in the evening. Relative humidities will mostly be below 15 percent this afternoon over the lower elevations. Southwest flow aloft across the state as an upper low crosses ID and nears Colorado.
Otherwise the morning will be dry and mostly sunny as a deep layer ridge passes overhead. trough will begin to erode and impinge upon the ridge, resulting in increasing moisture and an opportunity for isolated convection. However, given the nebulous forcing expected with the impulses and the time needed to erode the preceding ridge, have maintained only slight chance POPs, with virtually no mention of thunderstorms.
The upper trough that was responsible for this rainy weather will continue to move east and upper ridging will take over. Highs will range from the upper 70s in the Golden Triangle to the lower 80s in the MissLou. Slightly warmer conditions will occur west of the Mississippi River as moisture returns to the region ahead of a developing low pressure system in Oklahoma.
128 PM PDT Thu May 25 2017 Cooler weather is in the forecast through Friday as a weak trough of low pressure moves through the region. Also, the trough may create scattered light showers over and west of the mountains late tonight through early Friday morning. High pressure aloft will rebuild over the West this holiday weekend for warmer weather and a shallower marine layer.
417 PM CDT Thu May 25 2017 High pressure has settled over the Gulf coast region with low humidity persisting with clear skies. Temperatures were warm, in the lower 80s, but this is below the seasonal normals which are upper 80s for highs. It will be more humid, but still not oppressive as dew point temperatures are expected to be in the low to mid 60s until Friday evening when southerly winds will begin to bring the warm muggy conditions back.
Latest H5 analysis depicts the upper low responsible for earlier showers now centered over east Tennessee, with heights beginning to increase over the local region as a ridge builds from the west. Temperatures will rise into the mid to upper 70s this afternoon under the influence of clear skies and the building ridge aloft. The region will be nicely entrenched neath the upper low on Friday, thus diurnal convection looks unlikely, despite the ample low level moisture and resultant instability.
1235 PM CDT Thu May 25 2017 Upper low over Ohio continues to shift slowly eastward this morning: however, its associated cloud cover lingers across much of the KILX CWA. to the lower to middle 70s across the Illinois River Valley where skies are already mostly sunny. The deep upper level trough that has been driving the weather for the Midwest over the last several days is still over the Eastern Ohio River Valley. With the low continuing to drift eastward.
Meanwhile the cold front across northeast CO combined with upper trof moving across the northern Rockies has sparked a round of thunderstorms just north of the forecast area. Trailing energy dropping southward out of Canada carves out an upper low across ID which will move slowly eastward on Friday. Temperatures tomorrow will be around 10 degrees cooler across the southeast plains behind the front, to similar to a degree or two cooler out west.
320 PM CDT Thu May 25 2017 19z/2pm surface analysis shows weak ridge of high pressure extending from the western Great Lakes to the Gulf Coast. Despite presence of ridging, clouds associated with a slowly departing low over eastern Ohio persist across the E/NE KILX CWA this afternoon. A warm front will lift northward through the area Friday morning, possibly setting off a few WAA showers across the NW CWA. to the lower 80s along/south of I-70.
The persistent and atypically deep mid and upper level trough covering the eastern United States southward into the extreme southeastern Gulf of Mexico, will lift northward tonight and Friday. Because of this, the western Atlantic ridge aligned through the archipelago of Cuba will move northward into the Florida peninsula and the eastern Gulf of Mexico. At the surface, a subtle trough extending from south central Florida into the extreme southeastern Gulf of Mexico will limp into our area before dissipating overnight. A deep layered anticyclone centered over the Florida peninsula will slowly shift eastward, but a sharp western Atlantic ridge will become anchored across the Sunshine State through the period.
Cyclonic flow around the low was sloshing stratus back across much of the eastern half of the cwa keeping temperatures into the lower to middle 50s. The clearing skies in the western cwa has allowed temperatures to drop into the lower to middle 40s, with some patchy fog also being observed with variable visibilities due to a shallow, steep low level inversion. Increasing subsidence today with ridge building in should bring about decreasing clouds east, while mostly sunny west. Increasing clouds and developing southeast winds will yield a milder night for many with lows in the lower to middle 50s. Forecast highs range from the lower 70s far north to near 80 F far south.
Low pressure in the plains will move into southeast Kansas late tonight. Today Through Friday Night Drier and cooler airmass contd to advect into the region overnight behind a departing upper lvl low that moving acrs the SERN states. Highs today wl be much warmer than on Wed, with readings topping out in the mid 70s to lower 80s. Small rain chances return to the fcst Fri/Fri ngt as the low passes N of AR and an assocd fntl bndry apchs NW AR.
406 PM CDT Thu May 25 2017 Departing mid level cold core low has left dry northwest flow in its wake over the forecast area today as ridging takes over aloft. After a cool morning in the lower 50s, temperatures have warmed quite efficiently in the dry airmass with upper 70s and near 80 being seen at observation points this afternoon. The low level dry air will allow for another efficient warming day Friday, at least in the east as mid 50s dewpoints hang on. In the west, dewpoints will start creeping back up through the 60s into the lower 70s with humid conditions in place by afternoon.
Afternoon temperatures look to warm into the low to upper 70s (northwest to southeast) with lows in the upper 40s to mid 50s.
An upper level ridge reaches from Mexico to Hudson Bay while a low aloft OH troughs southeastward. With time - The upper ridge slides out over the western Gulf and stretches to Ontario while the upper low tracks to the Canadian Maritimes and takes the trough with it. although a weak short wave trough hangs back across northern FL. The Gulf high pressure tracks to FL with the front moving into far south FL tonight then south of there Fri. The weak short wave trough has very little impact as the deep layer ridging sliding toward the area from the Gulf dominates.