Aikyam-Lab/Synoptic-Bench huggingface dataset:
Windy and cooler conditions are forecast across northern Arizona from Thursday through Friday. Lighter winds are a warming trend are in the cards for the weekend as high pressure builds in from the west. This is due to a low pressure trough moving across the Northern Rockies. As the ridge to the southeast and the low pressure trough to the distant north move off to the east, the pressure gradient will weaken as will winds aloft.
A strong low pressure system centered over western Ohio will move on to the east. Weak ridge of high pressure will move east across Indiana late tonight and early Friday.
409 AM 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. An upper low pressure system will move east from the Ohio Valley, east across WV through tonight. Upper level low will finally be well off to our northeast by Friday morning. Still could see some showers across the mountains until ridging builds in later in the day. Brief ridging will give way to more unsettled weather for the holiday weekend.
310 AM CDT Thu May 25 2017 Relative high pressure col moving over the area currently is resulting in light winds and clear skies. For Friday, a weak boundary will be in the area as weak high pressure builds into the area from the north.
Weak upper ridging will continue to build east over the region tonight and tomorrow with nearly zonal flow aloft expected. Friday will be similar though temperatures should be roughly a degree or two cooler.
Upper level ridging overhead will maintain a rain-free forecast through the short term. Tomorrow will be even warmer, reaching the triple digits across the Rio Grande Plains/Brush country.
Current greenup and cooler temperatures will again keep fire danger below the high level even with the gusty winds.
200 AM EDT Thu May 25 2017 A cold front will push over the Atlantic by early Thursday morning. Large high pressure will build over the region through Thursday and will linger through this weekend.
Winds will become breezy later this morning into the afternoon as low pressure develops across west Texas. Winds will increase and be gusty at times Thursday as low pressure develops in the Southern Plains. The pressure gradient will increase across the lower Texas coast Thursday and breezy conditions will develop across the coastal sections of the CWA Thurs afternoon.
Closed upper level low finally expected to advance eastward to the Atlantic coast through this evening and into New England by Friday morning. Temperatures, still on the cooler side with highs in the middle 50s to lower 60s. Pattern forecast: Upper level low pressure that's plagued northern Michigan over the past several days will continue to slowly depart off to our east early today into tonight with mid-level ridging briefly becoming centered overhead by midday Friday.
545 AM 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. Ascent and deep layer moisture ahead of approaching low pressure should maintain the showers across the area this morning. The ascent/moisture is progged to shift N of the area by this afternoon as the low drifts across OH to Wrn PA. Scattered showers are expected through the rest of the day however with the close proximity of the low. 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.
305 AM 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. An upper low pressure system will move east from the Ohio Valley, east across WV through tonight. Upper level low will move off to the northeast Thursday night and Friday, with showers pulling out of the area.
312 AM 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. Ascent and deep layer moisture ahead of approaching low pressure should maintain the showers across the area this morning. The ascent is progged to shift N of the area by this afternoon as the low drifts across OH to Wrn PA. Scattered showers are expected through the rest of the day however with the close proximity of the low. 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.
The low will lift to the northeast tonight which will allow the winds to diminish.
312 AM 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.
155 AM 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. Upper low continues to dig into the Mid Mississippi Valley with energy rotating into the CWA in the cyclonic flow. As the low continues to rotate into the northeast, additional embedded waves will be the source of forcing in the cold pool aloft heading into Thursday. Upper level low will move off to the northeast Thursday night and Friday, with showers pulling out of the area.
A bit cooler over the region with isolated showers and a few thunderstorms from mainly eastern to northeastern Nevada through Friday. Drier and a little warmer on the weekend. Frontal system and upper trough trudging across the northern part of the state will finally exit Friday, and the first northerly flow of the coming ridge will begin to set up late Friday.
With ample insolation expected today, have trended twd the warmer guidance despite weak advection. Have also trended twd warmer guidance for tonight as clouds move into the region and winds becoming sly across the region. Mdls disagree on timing, but with a weak trof moving thru IA late tonight into Fri morning, have focused further north late tonight.
with deep troughing digging into the Gulf of Mexico. The upper low and associated troughing moves northeast toward New England by Friday morning which will allow weak upper ridging and a more quasi- zonal pattern to set up over the area. Behind this front, high pressure builds in over the Gulf of Mexico bringing sunny skies and cooler conditions to the area.
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.
416 AM EDT Thu May 25 2017 A cold front will push east of the Midlands and CSRA this morning. The upper level low will cross the region today bringing another chance of showers to the area.
/44/ Clouds and light convection over AR associated with the surface and upper low pressure systems, continue to rotate around mainly northern to eastern areas. Otherwise, a northwest wind will bring in cooler temperatures with lows from the upper 40s to lower 50s. Today Through Friday Upper low pressure over southern Missouri will move through northeast Arkansas this evening and then into Ohio Thursday morning. An upper ridge will build over Arkansas for Thursday and Thursday night but moves east of the area Friday. Another cold front will move through the Plains Friday and as moisture increases over Arkansas rain chances will increase in the north.
The upper low was near Muncie early this morning. The upstream upper level trof will gradually amplify as this system moves southeast out of Canada.
Warmer Today with the Usual Uncertainty in Coverage of Tstms Aloft: WV imagery and 00Z upr-air data show two lows. one over the TN Vly and the other over Sask with a ridge between over the Plns. As the ridge moves E. This low will be dislodged by the front and be pushed into OK tonight. Warmer as temps climb back to near normal (mid-upr 70s). though there a few spots from Cambridge-Plainville KS will probably reach the low 80s. the lower the chance of tstms here. but models are indicating sufficient mstr should develop in place to result in MLCAPE of 1000-1500 J/kg from I-80 S with the highest amts over N-cntrl KS.
/Issued 935 PM EDT Wed May 24 2017/ Cold front on the e side of the area with the last of the thunderstorms associated. Showers over AL associated with the upper Low will affect the n and portions of central GA later tonight into Thursday before exiting.
335 AM CDT Thu May 25 2017 Weather map depicts upper low centered over the mid MS River valley this morning with northwesterly flow situated across the area. Temperatures away from the coast are in the low to mid 50s with temperature along the coast in the 60s.
An upper level trough will be the main driver of the weather across the area today. The thermal trough along the coast will weaken, so winds at the beaches won't be quite as strong as they were yesterday. The upper trough will shift to the east Friday with one last short wave moving southward on the back side through south-central Oregon. An upper ridge offshore will strengthen and this will result in warmer weather, especially over the west side. East side areas will have highs similar to or just a touch higher than today due to the influence of the trough. By this weekend, the upper ridge will move into the West Coast and set up over the Great Basin.
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.
With a slow eastward movement of the upper level trough at least isolated showers will be possible near the Indiana border through the night while showers taper off slowly from west to east. Lows in the low 50s expected, slightly cooler than normal. Low level cyclonic flow around low pressure in central KY will keep showers and a few t-storms in eastern Illinois the rest of the evening. The ridging for Thursday will be progressive, allowing for a WSW upper level flow to develop on Friday. The models are in fairly good agreement that low pressure will track from the southern Plains toward eastern MO by Friday evening.
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.
329 AM CDT Thu May 25 2017 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.
Warmer temps expected the next few days along with increasing moisture levels (as S/SE winds strengthen in response to a low pressure moving into the Southern Plains). Highs in the lower 90s with lows in the 70s should prevail. The system moving into the South- ern Plains will help to drag a cold front into the state on Sat and the boundary should eventually make its way into the north- ern portions of our CWFA by Sun night. 41 Onshore winds will quickly strengthen during the day today as the pressure gradient tightens in response to developing low pressure in the lee of the Rockies. A moderate onshore flow will prevail through the weekend with low pressure over West Texas and high pressure over the eastern Gulf of Mexico.
644 AM 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.
Upper trough axis now stretching across northern California has deepened the marine layer to near 3000 feet this morning.
307 AM CDT Thu May 25 2017 307 AM CDT Trough and upper low responsible for the cool and unsettled weather this week is finally moving out of the area. The addition of some sunshine and heart of the cold pool moving east should allow temps to rebound nicely toward, if not into, the lower 70s today.
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.
217 AM PDT Thu May 25 2017 Cooler than average temperatures are expected again on 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.
329 AM 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.
216 AM MST Thu May 25 2017 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.
increase in theta-e should hold temperatures up around 10 degrees warmer than the previous night, primarily in the upper 40s to around 50 F. By Friday, temperatures may not be as warm following convective outflow and a weak cold front. Convective initiation Friday is still expected over the higher terrain in Colorado, driven east by the steering flow and instability axis over western Kansas with a higher threat of severe weather with better low level storm relative flow. Winds will generally be from a southerly direction today shifting to a northerly direction tonight behind a cold front.
509 AM EDT Thu May 25 2017 Cold front has finally pushed east of the CWFA early this morning. However, a large upper low and trough will continue across the eastern third of the country through today. Mid level energy rounding the base of the trough will add just enough lift, to produce some isold/sct shra today. Shra coverage is expected to decrease through the day as the upper low and trough pull off to the east. ecmwf centers a weaker ridge over the northern gulf while the gfs and sref slightly stronger. All of the models put the TN Valley and north GA in a slightly diffluent flow atop the ridge centered over the north central gulf.
Cool upper trough over our area currently extends from a low in Saskatchewan. Trough will be reinforced later today by a short wave trough moving south from BC. An upper low will form in central Idaho tonight, then weaken Friday as it moves east into Wyoming. Cyclonic flow around the low will maintain showers through Friday especially in the Idaho mountains north of the Snake Basin. Oregon will dry out Friday as big coastal upper ridge begins to come inland.
Scattered showers are then possible for most areas this afternoon, with some breezy winds, and cooler temperatures in the 50s and 60s also expected.
Lows tonight will be cooler than the past few nights and will range from the mid 50s in SE AL to mid 60s in the Big Bend. The long wave trough will reach its peak amplitude as it's axis passes east of the area Thursday morning. The associated late- season cold front will sweep drier air into the region setting us up for a couple of days of unseasonably low humidity and relatively mild temperatures, especially at night. It will be a little warmer on Friday with highs in the upper 80s inland and lower 80s coast, but humidity levels will remain low.
Troughing moving in from the north will bring some relief from the heat of the past couple of days.
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.
A trough of low pressure will remain over the region today and Friday with cool and breezy conditions for most locations. High pressure will then build in over the region for the upcoming weekend with a warming trend. Winds are also blowing rather strong through the Kern County Mountain and far southern Sierra passes with the trough of low pressure over the region.
1240 AM CDT Thu May 25 2017 A ridge of high pressure covers the forecast area at 19Z. The ridging remains over the region tonight. On Thursday, the ridging will be in the vicinity on the eastern third of the forecast area in the morning and expect no precipitation. Some minor model differences begin to show up in the afternoon with regards to the onset of the rain, and departure of the ridge. Initially in the extended a low amplitude ridge will build from the Upper Midwest Thursday evening into central Great Lakes by Friday evening.
138 AM EDT Thu May 25 2017 Cold front will move through the Midlands and CSRA overnight with additional showers and thunderstorms. On Thursday the upper level low will cross the region bringing another chance of showers and thunderstorms to the area.
An upper low will move across the eastern Ohio Valley Today. Breezy conditions are expected with gusts up to 35kts, especially across the higher elevations of southwest Virginia and northeast Tennessee. For this evening, the upper trough axis will move east of the Appalachians ending the rain chances with sky cover clearing.
350 AM CDT Thu May 25 2017 An upper level trough across the Pacific northwest and south central Canada will dig southeast across the northern high plains and central Rockies. A lead upper level trough across southwest CO will lift out into the central plains ahead of the main trough axis this digging southeast across the central Rockies this evening.
Readings appear to be a few degrees warmer then yesterday, but should still remain around 5 degrees below normal.
426 AM 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.
320 AM 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.
Warmer temperatures and periodic low chances for rain showers then Friday into the holiday weekend. Brief ridging through the column then brings fair wx Thursday night into Friday morning.
/issued 827 PM EDT Wed May 24 2017/ Regional radar composite is showing a broken band of thunderstorms just north of the forecast area, which is forecast to push south through the area overnight ahead of the cold front. Winds will start to subside through the next few hours, but seas are expected to remain at or above advisory levels through the overnight hours as the cold front passes through the area.
335 AM 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. An upper low pressure system will move east from the Ohio Valley, east across WV through tonight. Upper level low will move off to the northeast Thursday night and Friday, with showers pulling out of the area.
A narrow high pressure ridge will move across the area keeping us dry with warmer temps. If we can manage more clearing/sunshine, those temps could be a few degrees warmer. North winds will be a bit elevated across the southeast this morning, diminishing during the afternoon as the ridge builds in. Another trough will be approaching the area later tonight.
Cloud cover and warm southeasterly winds will keep temperatures a bit warmer across portions of central North Dakota than previously forecast. We increased PoPs along and west of the Highway 83 corridor with this update to reflect the eastward-propagating line of showers moving across western ND early this evening. By Thursday the trough will be east and the chances for precipitation remain just along the northern boarder. Used the highest guidance for wind speeds Thursday which gave a reasonably breezy but not windy day with west to northwest winds. Highs Thursday will range from the lower 60s southwest to lower 70s James River Valley. Current greenup will again keep fire danger below the high level even with the gusty winds.
408 AM EDT Thu May 25 2017 A broad area of low pressure from the Ohio Valley through the mid Atlantic coast will slowly lift northeast today through tonight. Low pressure will continue northeast into the maritimes Friday through Friday night.
133 AM 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 low pressure. Gusty SE winds around 25kt should continue along the ridges with elevated low level flow and a temperature inversion. Widespread morning rain will subside early in the day as a closed upper low deepens in the Ohio Valley and a dry slot asserts itself. By Friday, the upper low will have shifted toward New England with northwesterly flow in control and drier air arriving.
Chattanooga Airport, TN 86 65 88 67 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 84 62 87 65 / 0 0 0 0 Oak Ridge, TN 85 62 88 66 / 0 0 0 0 Tri Cities Airport, TN 84 56 86 59 / 0 0 0 0.
652 AM CDT Sun Jul 30 2017 Relatively cooler conditions will persist today with the chance of primarily isolated showers. There is an axis of higher instability over the high plains, centered west of our forecast area.
Strengthening high pressure over California will result in a warming trend through midweek.
602 AM CDT Sun Jul 30 2017 253 AM CDT Weak lake breeze likely to keep temps a couple/few degrees cooler near the lake this afternoon.
Winds will diminish to around 15 knots this evening with the cold front drifting south into the northern waters overnight as a weak area of low pressure continues along the boundary over the northeast gulf.
S/W in base of mid level trough across the eastern seaboard will dig southward, with models shifting frontal boundary into Lake/Volusia counties by this afternoon.
Northwest flow aloft continues with a trof over the eastern US and a large ridge of high pressure over the weatern US.
High pressure will continue to bring dry conditions to the area today and tonight. High pressure will continue to linger across the region today and tonight.
1038 AM CDT Sun Jul 30 2017 High pressure centered over central Illinois is providing sunny and cool conditions this morning. Another nice summer day expected for central and southeast IL as 1023 mb high pressure will be anchored over northern IL and southern WI through tonight. Highs yesterday were in the upper 70s to around 80F and will be a few degrees warmer today, in the lower 80s with ne winds around 10 mph or less. Lows tonight in the lower 60s with light winds expected.
The upper low that was exiting the Texas Big Bend area 24 hours ago was lifting north through New Mexico along the western periphery of the high centered over central Texas. A secondary disturbance was lifting northward out of northern Mexico in the wake of the upper low. Large scale mean ridge position through western states, but the most significant high center consolidation is immediately east of our area with an inverted trough extending from central Baja through Arizona.