Aikyam-Lab/Synoptic-Bench huggingface dataset:
350 AM EDT Tue Aug 15 2017 A cold front will result in showers and thunderstorms this afternoon across northern and western zones. The cold front will move through tonight. High pressure will build in from Canada Wednesday night and remain over the area through the end of the week. High clds are streaming into the CWA in sw flow aloft ahd of upr lvl trof. Highs tda wl be similar to yda with cooler temps along the immediate coast in onshore flow and low stratus expected. The cold front will be making its final eastward push across the state Wednesday.
344 AM CDT Tue Aug 15 2017 H5 analysis from earlier this evening had a low amplitude ridge across the central CONUS. West of this feature, a closed low was located over western Alberta, with a trough extending sw of this feature into northern Nevada. Will continue with thunderstorm chances overnight with the highest pops in the east.
1127 PM MDT Mon Aug 14 2017 The evening water vapor loop/00Z upper air analyses showed a mid/upper level trough axis over the Intermountain West. Most of the heavier convection has exited to the east of the CWA, with scattered showers and isolated thunderstorms spreading northeast across central and southern Wyoming ahead of a slow moving cold front. Temps will be around 5-10 degrees cooler for tomorrow behind a weak fropa overnight.
Lows are likely to tank into the low to mid 50s most areas, with the colder low lying regions sneaking into the upper 40s for what should be a 30+ diurnal swing.
657 AM EDT Tue Aug 15 2017 A weak cold front will move through the area today possibly causing a few showers and thunderstorms.
The Atlantic ridge of high pressure stretched across the Florida Peninsula will continue to dominate, keeping winds light and out of the southeast through tonight. On Wednesday, the ridge will start a slow trek northward, letting winds freshen slightly out of the east southeast. Again temperatures will again run several degrees above normal through Wednesday night, topping out in the lower 90's, and lows bottoming out in the low to mid 80s.
1213 AM MDT Tue Aug 15 2017 06Z TAF CYCLE Drier air aloft moving in over western New Mexico tonight as a broad upper trof moves into the Great Basin. An upper level trough will deepen over the western United States through mid week steering drier air over New Mexico from the west.
A broad upper trough lingers over the West this morning, but a push of drier air in the lower levels will keep things mostly stable through the day. Through the rest of the week, we come under the influence of upper ridging.
355 AM EDT Tue Aug 15 2017 Moisture will remain high with a pressure trough in the forecast area during the rest of the week. The trough and heating will help support thunderstorms but coverage should remain limited because of upper ridging. This ridging will help cause hot conditions with heat index values peaking 102 to 108. The surface pressure trough in the region and high moisture plus heating should help cause thunderstorms but building upper ridging should limit coverage. Leaned toward the lower pop guidance because of the ridging. Expect maximum heat index values 102 to 108 with the higher values in the southeast section. Upper ridging was depicted weakening somewhat over the weekend.
The warm front will begin to strengthen and lift north, but with the main rainfall delayed (due to delayed forcing) the low level flow will likely become northeast to east and draw in cooler lake air overnight. Overall largescale pattern remains southwest to zonal, ushering warmer air and more humidity.
Broad High Pressure will remain across Indiana and the Ohio Valley today. The high will continue to keep warm and dry weather across Indiana through Wednesday Morning. A warm front will approach Central Indiana from the southwest on Wednesday afternoon as low pressure develops across Minnesota and Wisconsin.
415 AM MDT Tue Aug 15 2017 A series of short wave troughs that have been moving through the base of the main upper trough over the intermountain region begin lifting out east of the Rockies today and across the Central High Plains over the Plains states from tonight through Wednesday evening. Isolated to scattered thunderstorms will continue across the area through the day on Wednesday as the short wave troughs aloft continue to lift across the region with some stabilization of the atmosphere Wednesday night in the wake of the exiting upper short wave trough. The remainder of the upper trough over the western U.
Clearing skies will allow temperatures to get a few degrees warmer than yesterday with temps in the upper 70s to low 80s expected. Warming and drying trend continues tomorrow with low-level ridging building in and westerly flow aloft.
234 AM CDT Tue Aug 15 2017 The highest probability for storms will occur across the central high plains this afternoon and evening. There may also be an attempt across southern Kansas with a remnant Storms may be ongoing early in the period on Wednesday with redevelopment along a southward advancing cold front on Wed afternoon.
Deep west to southwest flow around high pressure to our southeast, high moisture and PWAT levels, and decent instability in the late morning and afternoon will combine with the seabreeze to produce scattered showers and storms across a majority of the area. Highs will generally be in the low 90s with heat indices around 100.
Afternoon highs will be limited to the low/mid 80s in southeastern zones, where skies will remain mostly cloudy. With dewpoints in the low to mid 70s, moderate instability could develop by the afternoon. Lows will only drop into the low/mid 70s.
Temperatures will peak by the end of the week followed by cooler and breezy weather for the upcoming weekend. A weak ridge is building off the West Coast and allowing cooler and drier northwest flow.
404 AM CDT Tue Aug 15 2017 Today through tonight: The ArkLaMiss continues to remain in westerly flow on the northern side of a subtropical ridge situated in the northern Gulf of Mexico. The subtropical ridging over the Gulf will begin to build into the area during the day and will act to displace the perturbed westerly flow and channeled vorticity further north into Tennessee. The main headline for today will continue to be heat stress issues as temps rising into the low 90s combined with mid to upper 70s dewpoints will result in heat index values around 105 degrees. For tonight, any diurnal convection should dissipate fairly quickly after sunset with overnight lows staying mild in the low to mid 70s.
An area of low pressure over the western states will provide a dry southwest flow for the Mojave Desert and southern Great Basin much of the week.
The high-res guidance (HRRR/RUC/NAM/NAMnest) have all indicated thunderstorm development along the surface boundary over southern Nebraska and northern Kansas. The best widespread chances for rainfall will be Tuesday evening and overnight as an upper level disturbance and associated cold front moves eastward across the area.
A weak cold front will approach the area this afternoon and stall across the region tonight into Wednesday.
High pressure brings drier weather on Wednesday but unsettled pattern returns to end the week. The short term period is characterized by weak high pressure with nearly zonal flow at the apex of a broad upper level ridge centered over the southeastern CONUS. Starting Wednesday night, numerous boundaries wrapping around the developing cyclone to our northwest are in play to act upon the available moisture to generate scattered showers and storms.
339 AM EDT Tue Aug 15 2017 A weak cold front will move through the area today possibly causing a few showers and thunderstorms.
352 AM EDT Tue Aug 15 2017 A very weak trough/old boundary remains across portions of north central/central GA this morning. Building high pressure aloft will help limit convective coverage into Wednesday. High pressure aloft will build in from the south - also helping to limit convective coverage.
An upper level ridge over the eastern Pacific will keep the region under an upper level northwesterly flow through the next 24 to 36 hours. Low temps tonight will be cooler due to good radiative cooling in the dry low level air mass. Scattered high clouds will continue to stream through the area as they spill over the ridge offshore.
Current temps are running about 5-10 degrees cooler compared to 24 hours ago and range from the 40s in the mountain valleys to the upper 50s to around 70 in the Central Valley. Several impulses forecast to drop southeast into NorCal thru Wednesday as the trough shifts east and ridging from the eastern Pacific begins to rebuild.
A weak cold front will bring slightly drier air into the area late today into Wed.
/issued 221 PM CDT Mon Aug 14 2017/ Upper ridge weaker this morning and extending across southern tier of states from FL to AZ. An upper trough deepening across the Western US will reach down to Mexico by Tuesday. rolling over top of ridge Wednesday as the ridge once again builds west again.
Dew points are in the low to middle 70s so temperatures will not likely drop much more overnight. Broad upper level ridging centered along the Gulf Coast will expand northward over the area by Wednesday with a general reduction in overall pops. Mainly diurnal convection is anticipated, especially over northern areas which should be positioned along the northern periphery of the upper ridge.
410 AM EDT Tue Aug 15 2017 07z sfc analysis shows general low pressure through the area with high dewpoint air in place. Winds are light with temperatures fairly uniform in the lower 70s most places along with dewpoints in the upper 60s to lower 70s. Heights will be on a slowly increasing trends ahead of the next main trough developing over the Pacific Northwest and inland to the Northern Plains. High dewpoints tonight will mean a repeat with mild temperatures, not much ridge to valley distinctions, and more patchy/areas of non-terrain discriminating fog.
A likttle warmer today but still a few degrees below normal as upper trough remains over the northwest states. A weak embedded short wave trough will provide enough instability for a slight chance of thunderstorms in southern Malheur County this afternoon and evening. A little warmer again Wednesday as the main upper trough fills and shifts to our east.
The first will be an upper maritime anticyclone. Normally these upper maritime ridges will cause a good bit of sh/ts actvity depending on what is subducting them at the time. But the next upper system will be very fast behind the departing upper high. This time it will be the upper low that is currently located over the open Atlantic north of Puerto Rico.
342 AM CDT Tue Aug 15 2017 Upper ridge located to our south across the Gulf with westerlies in place across the mid state.
155 AM EDT Tue Aug 15 2017 A weak cold front will move across the Eastern Lakes Tuesday then lift north as a warm front by Wednesday night.
High pressure will build over the Great Basin this week, bringing very warm temperatures to northern Arizona and a slight chance thunderstorms to the high terrain, most numerous over the White Mountains. Quiet weather across northern Arizona this afternoon, with temperatures about 3-4 degrees cooler than yesterday. Not much change in our forecasts from yesterday, as models continue to show a very strong ridge of high pressure developing over the Great Basin and Rocky Mountains this week.
155 PM EDT Sun Jul 2 2017 Aviation A cold front will move through this afternoon with a few showers and thunderstorms. Then high pressure will provide fair weather for much of Lower Michigan through July 4th.
/ISSUED 1018 AM CDT Sun Jul 2 2017/ 500 mb ridge continued to build overhead this morning. /ISSUED 421 AM CDT Sun Jul 2 2017/ Upper ridging making it's presence known with slightly above normal temperatures and little if any rainfall through the 4th of July holiday.
225 PM CDT Sun Jul 2 2017 Surface map at 19Z shows a weak ridge of high pressure to our east, with a moist & moderately unstable air mass in place across Middle Tennessee.
350 PM EDT Sun Jul 2 2017 Enhanced westerly flow around the southern periphery of the low tracking across the northern great lakes is supporting a poorly organized band of innocuous shower activity over Lake Michigan and western Lower this afternoon.
259 PM EDT Sun Jul 2 2017 A weak cold front will push down into the area through Monday and then stall out across the region through mid week. Expect lows tonight in the low to mid 60s. The cold front will continue to sag slowly south through the day on Monday and eventually stall out across central portions of our fa. Weather will be influenced by an upper trough that will be positioned over the Eastern CONUS for most of the period.
231 PM CDT Sun Jul 2 2017 Water vapor imagery and latest upper air analysis show a subtropical ridge extending from roughly around Florida to across the Gulf South states and the Gulf of Mexico into Texas. The center of the 70H ridge is roughly along the South Central Louisiana coast. High pressure is also extending at the surface from Florida across the Gulf of Mexico. However, dry and sinking air brought about by the mid and upper level ridge is keeping any significant convection from developing. Rua Decent agreement in the 70H ridge hanging around the forecast area through the Fourth of July Holiday, so little change in the forecast for the next 48 hours, with almost none or very limited significant convection, along with hot and humid days and muggy nights.
Strong heating and convergence into a lee-side trough will be the main support for thunderstorms. However, we leaned toward the higher guidance pops because of the surface feature and moderate instability plus early afternoon upstream development in central Georgia. Weak upper troughiness to continue over the E CONUS, with upper ridge over the W.
1258 PM CDT Sun Jul 2 2017 Forecast generally looks good today and just slight modifications to sky cover into this evening and went about 1F warmer for highs today. Weak 1020 mb high pressure over the mid MS and into the Ohio river valley wil continue to influence central/se IL weather with dry wx through sunset. A weak bubble of high pressure will bring mostly sunny and warm conditions to central Illinois today. Based on forecast soundings showing a well-mixed boundary layer up to about 6500-7000ft, afternoon high temperatures will be a couple of degrees warmer than yesterday. Meanwhile further northwest, an approaching cold front will interact with a narrow instability axis to trigger scattered strong thunderstorms across far northern Illinois into central Iowa by late afternoon into early evening.
625 PM EDT Sun Jul 2 2017 A cold front will exit across the maritimes tonight followed by a secondary cold front on Monday.
In addition, a cold front is expected to slide southward across the area through the middle evening hours. Mesoscale models seem to focus convective development in the area of the outflow boundary, perhaps helped by frontogenesis response with the cold front. High pressure moving across Lake Superior later tonight into Monday should bring quiet weather to the area. Light easterly winds will bring cooler temperatures on Monday near the lake, with near normal temperatures inland.
114 PM PDT Sun Jul 2 2017 Building high pressure will bring a warming trend this week. A weak trough over California today will get squeezed out by increasing high pressure aloft today and Monday. As the high pressure ridge settles over the four corners area we get the classic monsoon setup.
236 PM EDT Sun Jul 2 2017 Weak high pressure dominates through Monday with warm and somewhat drier air.
1213 PM CDT Sun Jul 2 2017 High pressure centered over southwest Missouri will drift east today and tonight. There should be plenty of sunshine today on the western side of the ridge. Expect temperatures across central and northeast Missouri into west central Illinois to be several degrees warmer today than yesterday due to the strong sunshine and increasing return flow on the back side of the ridge.
Elsewhere, temperatures continue to be on track for the low 70s north and mid to upper 70s south. High pressure will build into the region.
227 PM CDT Sun Jul 2 2017 Weak low pressure will begin to push into western SD tonight. By midnight some showers and thunderstorms associated with the low may be as far east as central SD. With southeasterly flow ahead of the low, temperatures will recover across the east. Highs will range from the lower 80s east to around 90 in the west.
A collision will occur over the interior early this evening and there should be a better chance for wet microbursts given the slightly cooler/drier air aloft. GFS model shows some drier air rotating NW around the ridge axis across southern counties. Temperatures remaining near to slightly above seasonal norms in the low to mid 90s interior and around 90 immediate coast/beaches.
A weakening trough will make its way across the forecast area through tomorrow morning. High pressure will rebuild over the region beginning late tomorrow, with moisture increasing for the middle and latter part of the week.
High generally in the lower 90s, with a few locations in the mid 90s. Low temps Monday night are again expected to be in the lower to mid 70s.
1123 AM MDT Sun Jul 2 2017 Water vapor shows upper ridge extending from the nrn Rockies into the nrn plains, with disturbed sw flow extending newd from the Great Basin. Upper ridge will flatten later today as short wave ejects out of the Great Basin and into ern WY by later afternoon. After Monday, the main wx concern will be the building heat as upper ridge amplifies across the wrn conus.
Upper level high pressure will begin to setup across the desert southwest and remain stationary throughout the week. Meanwhile, over the northern Pacific, troughing will also develop and remain stationary leaving northwest California in southwesterly flow aloft.
A strong upper ridge will remain in place over the southwestern U. High temperatures across the plains should again reach the lower to mid 90s, as this typical summer weather pattern prevails. Models all show the upper ridge center moving into the CWA from the west and southwest Monday night through mid week.
149 PM EDT Sun Jul 2 2017 A weak cold moves through this evening and yet another cold front moves across the area Monday evening.
218 PM EDT Sun Jul 2 2017 General upper troughing eases east of the Upper Great Lakes through Mon. Quiet weather expected into Mon as high pressure expands from Hudson Bay to the Upper Great Lakes. Sct-bkn cu clouds expected on Mon with lake breezes, especially off Lk Superior, as the high builds overhead. Persistent upper troughing that that has been entrenched over the Great Lakes will shift a little further eastward with a slow increase in upper level heights across the area.
Expected trend will generally continue with a lack of a good focus other than weak surface convergence or showers and storms drifting eastward from the higher terrain. Overnight lows will remain warm, generally in the lower to mid 70s. High generally in the lower 90s, with a few locations in the mid 90s. Low temps Monday night are again expected to be in the lower to mid 70s.
Thunderstorms starting to fire up out on the high plains in western Kansas, but these are forecast to move slowly southeast and dissipate with time.
550 PM EDT Sun Jul 2 2017 A cold front will bring a chance of showers and thunderstorms back to the forecast on Monday. A cold front will start to advance southward toward the area on Monday morning. Monday's cold front will remain stationary near the Mason-Dixon line through much of the period, and a chance of showers/storms will linger across southern counties.
Flow around a high-pressure cell centered over the northern Gulf of Mexico will keep diurnally modulated SE winds in place for the RGV terminals for the next 24 hours. Satellite and radar images as well as surface observations indicate isolated showers offshore the lower Texas coast this morning with some patchy low clouds across the CWA. VFR conditions will prevail after 15Z as the combination of a 500mb ridge across west Texas and a 500mb ridge across the eastern Gulf of Mexico continues to provide subsidence across the CWA. /issued 351 AM CDT Sun Jul 2 2017/ SHORT TERM (Today through Monday): Low to mid level moisture will continue to remain limited across the CWA today through Monday with a 700mb ridge across the Gulf of Mexico keeping deeper moisture well to the south across the Bay of Campeche.
Upper ridge rebounds beginning Monday. Center of upper high strengthens but still wobbles around the 4 corners region this week, with impact to amount of moisture that works through the Great Basin toward Idaho.
202 PM EDT Sun Jul 2 2017 A weak cold front will move across the region early this morning. Did maintain a slight chance across far southern zones into the overnight, but otherwise partly cloudy and modestly cooler/drier. Compressional heating ahead of the frontal passage will bring highs in the lower 90s on Monday, upper 80s coastal zones.
148 PM EDT Sun Jul 2 2017 As high pressure moves into the area today, dry weather is expected. Warmer and more humid conditions are expected going into the new week, with occasional chances for storms. Otherwise, a weak area of high pressure will slide east across the region through this afternoon. As high pressure shifts southeast of the region tonight, its influence will still keep relatively calm and dry conditions over most of the ILN CWA overnight. However, attention will also turn to a weak pressure trough / wind shift moving south across the lower peninsula of Michigan.
More isolated and weaker cells are in the vicinity of the Lower Keys land masses. The local area will continue on the southern periphery of relatively large high pressure which will remain anchored in the western North Atlantic over the next several days. The latest large scale graphical guidance suggests that the mid to upper ridge, although of low amplitude, will remain more resilient to our north/northwest through the bulk of this week, then weaken this coming weekend thanks to the influence of a broad trough approaching the eastern US. On this date in 1888, the low temperature in Key West dipped to 69 degrees.
248 PM EDT Sun Jul 2 2017 Weak high pressure dominates through Monday with warm and somewhat drier air.
Overnight lows will be in the low 70s (F) for most areas.
133 PM EDT Sun Jul 2 2017 High pressure will maintain dry weather this afternoon until a cold front returns shower and thunderstorms chances to the area Monday. The broad trough should shift E of the area Tue, as the cold front becomes stationary across Srn OH to WV.
However, mesoscale bndrys from the convection farther N may inhibit the NE progression of the lower cigs, but this will continued to be monitored and addressed closer to the event.
1219 PM CDT Sun Jul 2 2017 Early morning satellite imagery showed an amplified pattern in place across the Nation, with the broad trough to our east and ridge axis poking north over the Rockies to our west, leaving the region under the influence of a northwest flow.
417 PM EDT Sun Jul 2 2017 A cold front will push offshore tonight followed by a secondary cold front on Monday.
122 PM EDT Sun Jul 2 2017 Dry and mostly sunny conditions will prevail today with highs reaching the low to mid 80s. Lows tonight will drop into the low to mid 60s.
220 PM EDT Sun Jul 2 2017 A cold front will bring a chance of showers and thunderstorms back to the forecast on Monday. Skies will become mostly cloudy on Monday with the arrival of a cold front. Monday's cold front will remain stationary near the Mason-Dixon line through much of the period, and a chance of showers/storms will linger across southern counties.
229 PM MDT Sun Jul 2 2017 West flow aloft will weaken through the week as a large high pressure ridge builds north northeast from the great basin into the northern Rockies. A large high pressure ridge will continue to build north northeast from the great basin into the northern Rockies.
1250 PM PDT Sun Jul 2 2017 High pressure over the Great Basin will keep dry conditions and above average temperatures through the 4th of July.