Aikyam-Lab/Synoptic-Bench huggingface dataset:
1017 AM EDT Sun Sep 15 2019 High pressure in control today.
323 AM MDT Sun Sep 15 2019 As the ridge in the region nudges eastward, dry southwest flow sets up over WY today. RH values will dry across the state today with widespread mid to lower teen values and only the northern mountains and some northwest locations in the low 20s. Longwave trough still expected to sweep eastward across the Pacific Northwest early in the week, as the overall pattern begins to buckle significantly.
Chattanooga Airport, TN 92 66 94 68 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 90 62 91 67 / 0 0 0 0 Oak Ridge, TN 91 62 91 67 / 0 0 0 0 Tri Cities Airport, TN 89 54 89 63 / 0 0 0 10.
As an upper level ridge builds overhead, expect the warming trend and sunny skies to continue on Sunday with widespread temperatures in the mid to upper 80s, perhaps approaching the lower 90s across the far west. The upper ridge axis slowly begins to move east tonight as a deepening longwave trough makes its way into the Pacific Northwest.
These winds and upper level high pressure will keep dominant VFR conditions ongoing. or just slightly warmer than Sat.
The 05Z surface chart shows high pressure centered over southwest OH. For today, the elongated west-east ridge at 5h from OK through the lower Appalachians will begin to amplify through the lower MO and AR river valleys. Expect even hotter temps on Monday afternoon given the lower dew points.
437 AM MDT Sun Sep 15 2019 Satellite pictures are showing a batch of upper level cloudiness over the CWA right now associated with an upper closed low over Arizona. The low level winds will be southeasterly and easterly today, with normal drainage patterns tonight. 5 C warmer than yesterday's highs.
352 AM PDT Sun Sep 15 2019 Pattern change will lead to significantly cooler temperatures and a chance of showers and thunderstorms late this evening into Monday. Significant cooling is expected Sunday into Monday as heights lower across the region in response to an approaching strong upper-level trough. Southwesterly winds will increase in advance of this upper-level trough.
expect fairly uneventful weather to continue through the short term periods as high pressure aloft will continue across the local area today.
Much like yesterday, there is some concern on the potential for diurnal thunderstorm development in the higher terrain areas of southeast Oklahoma, but given the minimal development yesterday, POPs do not appear warranted for now. /Issued 338 AM CDT Sun Sep 15 2019/ Ridge of high pressure will continue to build across the Plains Today with southerly winds combined with warm and humid conditions common across Eastern Oklahoma and Northwest Arkansas. A non-zero potential of a diurnal isolated shower/storm could also be possible again this afternoon within the higher terrain locations of Southeast Oklahoma.
/issued 237 AM CDT Sun Sep 15 2019/ (Today and Tonight) An upper level ridge centered across the Arklatex region will continue to dominate the weather across West Central Texas. Expect highs this afternoon in the low to mid 90s.
Am expecting this trend to continue through the day as the mid/upper level low over the Gulf of Mexico continues to slowly drift west toward the TX coast and usher deeper moisture into S TX. High temperatures are expected to be a couple degrees cooler by Mon with the increase in moisture/rain.
Temperatures will continue to run warmer than normal over the central California interior today. Monday will be much cooler with a chance of showers north of Fresno county and mainly over the Sierra.
517 AM MDT Sun Sep 15 2019 The latest surface analysis has a lee trough/weak warm front over eastern WY. Water vapor images and the RAP analysis showed a dirty, low-amplitude ridge over the northern Rockies. Today through Monday night, upper ridge builds over the MO River Valley in response to deepening upper trough over the West Coast. Strong thermal ridge builds over the CWA bringing high temperatures around 10F above average.
402 AM CDT Sun Sep 15 2019 As an upper level ridge builds overhead, expect the warming trend and sunny skies to continue on Sunday with widespread temperatures in the mid to upper 80s, perhaps approaching the lower 90s across the far west. The upper ridge axis slowly begins to move east tonight as a deepening longwave trough makes its way into the Pacific Northwest.
527 AM MDT Sun Sep 15 2019 As the ridge in the region nudges eastward, dry southwest flow sets up over WY today. RH values will dry across the state today with widespread mid to lower teen values and only the northern mountains and some northwest locations in the low 20s. Longwave trough still expected to sweep eastward across the Pacific Northwest early in the week, as the overall pattern begins to buckle significantly.
The low to mid level easterly flow pattern gradually starts to shift towards the northeast as the upper level ridge over the region shifts westward. Cloud cover again will keep daytime high temperatures generally in the low to mid 90 degree range.
/Issued 338 AM CDT Sun Sep 15 2019/ Ridge of high pressure will continue to build across the Plains Today with southerly winds combined with warm and humid conditions common across Eastern Oklahoma and Northwest Arkansas. A non-zero potential of a diurnal isolated shower/storm could also be possible again this afternoon within the higher terrain locations of Southeast Oklahoma.
738 AM EDT Sun Sep 15 2019 High pressure will build into the region and usher in several days of dry weather with temperatures at or above normal. A weak area of low pressure will approach from the west tonight. Weak low pressure will cross the area on Monday, generating many showers. A weakening cold front will cross the area on Monday, bringing little more than low chance PoPs. After that, a sprawling area of high pressure will nose down from New England and dominate our weather for the remainder of the week. After a brief cool down behind the departing cold front, temperatures should slowly begin to moderate later in the week. A weak low pressure area and nebulous cold front with meager moisture will cross the area on Monday.
Strong high pressure will continue its grip over the ArkLaMiss today. Another hot day is on tap, with highs ranging from the low 90s in the Pine Belt area to the upper 90s across the Delta. Clear skies will prevail overnight with lows in the low/mid 70s.
609 AM CDT Sun Sep 15 2019 A few storms were able to bubble up overnight across residual boundaries, as the low level jet promoted lift across the region. High pressure will build in at the surface behind the departing showers and storms today, as a ridge begins to build over the region aloft. The ridge of high pressure will remain over the forecast area through the majority of the day, Monday, maintaining dry conditions, before shifting off to our east Monday evening and overnight. A weak disturbance will ripple through the southwesterly upper level flow Monday night, brining a small chance for a few showers and storms to the region as the low level jet intensifies Monday night.
Upper high over Oklahoma today will shift east further away from the Panhandles tonight.
209 PM CDT Sun Sep 15 2019 A deepening warm sector underneath a building ridge over the central CONUS will maintain hot and muggy conditions through the early to mid-week, with a slight improvement expected by the late week.
High pressure at the surface and aloft will maintain hot conditions over the forecast area as we head into the start of the work week.
1058 AM MDT Sun Sep 15 2019 The latest surface analysis has a lee trough/weak warm front over eastern WY. Water vapor images and the RAP analysis showed a dirty, low-amplitude ridge over the northern Rockies. Today through Monday night, upper ridge builds over the MO River Valley in response to deepening upper trough over the West Coast. Strong thermal ridge builds over the CWA bringing high temperatures around 10F above average.
Meanwhile, a disturbed area in the northern Gulf of Mexico will work slowly eastward toward the Texas Gulf coast before turning northward around the southeast CONUS upper ridge. Western end of the southeastern ridge over the forecast area will get shunted eastward by increasing cyclonic flow over the intermountain West and Pacific coast.
137 PM EDT Sun Sep 15 2019 Showers will be possible Monday as a weak cold front and an upper level disturbance cross the region.
204 PM EDT Sun Sep 15 2019 High pressure in control tonight. Mainly dry cold front crosses Monday. High pressure and upper ridge dominate latter half of the week. These clouds were associated with a mid-level disturbance and weak cold front which were pushing toward the region. The disturbance and cold front are expected to push east across the area on Monday. Models indicate high pressure, at the surface and aloft, will build back into the region through the period.
144 PM MDT Sun Sep 15 2019 The latest upper air analysis shows deep upper trough just off the west coast. In response to this digging trough, a robust ridge continues to build across the intermountain west. A weak upper trough currently centered over eastern Arizona and western New Mexico will slowly meander northeastward over the next few days.
245 PM CDT Sun Sep 15 2019 Skies remain mostly sunny across the Mid-South this afternoon with temperatures in the low to mid 90s. An upper level ridge continues to cover much of the southern U. This ridge will start to expand northward and become more centered over the lower Mississippi Valley.
Based on upstream observations, will lean toward the warmer MAV guidance for highs, except near the bay and lake where winds are expected to turn easterly during the day. Highs should be mainly in the 70s, cooler near Lake Michigan. Monday Night Through Sunday Unusually strong upper ridging from the Gulf Coast to the Great Lakes will make for a warm week of weather for mid September. The ridge will keep the threat of precipitation west of the forecast area for the most part. Upper troughs passing well to our northwest and weak surface cold fronts will bring a chance of showers and thunderstorms at times.
Lows tonight will fall into the 60s and then highs on Monday will reside in the low 80s. Conditions become less favorable by this afternoon before a low level jet develops tonight ahead of a cold front. An upper level ridge will build northeast into the Midwest this upcoming week in response to a deep upper level trof amplifying across western North America.
As a broad central Gulf upper low enters the western Gulf through tomorrow, the chances for its outer bands to clip the upper Texas coast will be on the rise.
1237 PM CDT Sun Sep 15 2019 High pressure is centered over Arkansas and will keep mainly dry weather over the state. These winds and upper level high pressure will keep dominant VFR conditions ongoing. or just slightly warmer than Sat.
Surface analysis this morning shows high pressure in place across southern Ohio. have trended highs a bit cooler across the northwest. Could see a small chance for a shower or storm tonight, but after that dry weather will build in for the work week under the influence of high pressure. The ECMWF continues to shows strong high pressure in place across the region through much of this period.
Temperatures are heating into the low to mid 80s and should easily reach the low to mid 90s this afternoon.
336 PM EDT Sun Sep 15 2019 An upper-level composite analysis this afternoon reveals an intensifying tropical cyclone (Humberto) moving slowly over the Atlantic east of the Florida Peninsula, with a deep cyclonic gyre to the west over the Gulf of Mexico. A deep, but narrow ridge extends west-southwestward from the subtropical Atlantic, across the southern Bahamas and Cuba, to the northwestern Caribbean Sea. This ridge is associated with anticyclonic trajectories, dry midtropospheric air, and suppressed cumulus convection. Therefore, daily rainfall patterns will be highly modulated by nuances in the low-level flow/steering, moist layer depth, and potential buoyancy.
1213 PM CDT Sun Sep 15 2019 A few storms were able to bubble up overnight across residual boundaries, as the low level jet promoted lift across the region. High pressure will build in at the surface behind the departing showers and storms today, as a ridge begins to build over the region aloft. The ridge of high pressure will remain over the forecast area through the majority of the day, Monday, maintaining dry conditions, before shifting off to our east Monday evening and overnight. A weak disturbance will ripple through the southwesterly upper level flow Monday night, brining a small chance for a few showers and storms to the region as the low level jet intensifies Monday night.
1143 AM MDT Sun Sep 15 2019 As the ridge in the region nudges eastward, dry southwest flow sets up over WY today. RH values will dry across the state today with widespread mid to lower teen values and only the northern mountains and some northwest locations in the low 20s. Longwave trough still expected to sweep eastward across the Pacific Northwest early in the week, as the overall pattern begins to buckle significantly.
Afternoon heating will allow shower and thunderstorm activity to develop and continue through the evening hours ahead of a cold front moving across Utah.
We are on track to reach the lower 80s for afternoon high temperatures with somewhat high relative humidity as dew points climb into the 60s to near 70 degrees. This results from a developing ridge aloft which will help keep conditions dry today through tonight. Ridging aloft continues through Monday.
Latest models are consistent with frontal timing tomorrow as a large upper level low moves into the PacNW. We are still expecting a big change in temps for tomorrow, as highs will be 10 to 20 degrees cooler than today. Today will be the last hot day as upper flow backs to southwesterly ahead of an incoming Pacific trough. Strong cold front will pass through eastern Oregon Monday morning, reach the OR/ID border midday, and move across western Idaho Monday afternoon.
The only releif may be due to the thermal wind along with some influence from the lee trough over the region. With the lee trough forecast to remain influencing the area for the next few days, at least some southwesterly breeze will remain across the area.
314 PM CDT Sun Sep 15 2019 High pressure aloft centered overhead with area 12z RAOB data sampling mid level heights near seasonal extremes. Upper low currently over the western Gulf of Mexico will make very slow west and eventually northward progress around periphery of upper ridge.
201 PM MDT Sun Sep 15 2019 Slightly cooler temperatures are expected overnight tonight, mostly in the 40s and and 50s across the region.
252 PM CDT Sun Sep 15 2019 After morning rain dissipated, partly to mostly sunny skies and warmer air prevailed over central and southeast Illinois, this afternoon. High pressure building in from the west later tonight, will allow winds to go light/calm. A deepening west coast longwave trough will allow upper level ridging to strengthen from the lower Mississippi Valley, northeast into the Great Lakes for the first half of the week. However with east to southeast surface flow off high pressure to the northeast, dewpoint will stay tolerable in the 60s, keeping peak heat indices within a few degrees of max temps.
305 PM CDT Sun Sep 15 2019 The axis of an upper ridge across the interior CONUS was migrating eastward today ahead of an upper trough moving into the Pacific Northwest.
The departing upper level ridge will quickly exit the area toward the Hudson Bay region by tomorrow.
331 PM CDT Sun Sep 15 2019 Warmer conditions have returned to the region and will persist through the short term. Byrd Upper level ridge will remain anchored over the region through at least mid week with highs 10 degrees above normal for this time of year.
131 PM EDT Sun Sep 15 2019 High pressure in control tonight. Mainly dry cold front crosses Monday. High pressure and upper ridge dominate latter half of the week. These clouds were associated with a mid-level disturbance and weak cold front which were pushing toward the region. The disturbance and cold front are expected to push east across the area on Monday.
Fortunately, the lower dewpoints mean that heat indices have remained largely under the century mark. Big story in the near term remains the evolution and resulting impacts of the upper level low centered across the central gulf of Mexico.
Temperatures will cool from the low to mid 90s this afternoon to the lower 70s overnight for lows overnight.
357 PM EDT Sun Sep 15 2019 A weak cold front will sink south through the region late tonight and Monday. High pressure will return to the area Monday night through the rest of the week. Another cold front will move into the region by the weekend.
The short term remains dry, with temperatures warmer than usual mid September temperatures.
243 PM CDT Sun Sep 15 2019 High pressure will slowly shift east over the Arkansas area.
A 500mb ridge will expand over the region, leading to a continuation of the abnormally warm temperatures. A couple of the hi-res CAM models, particularly the 12z NSSL, indicate a few isolated showers on Monday afternoon, as a very weak cold front attempts to move in.
1102 AM EDT Sun Sep 15 2019 A weak cold front and upper level disturbance will create chances for showers through the day Monday. Overall coverage may be spotty due to a lack of heating from cloud cover will minimize instability and the lack of stronger forcing along the front and more well-defined trough aloft.
1122 AM EDT Sun Sep 15 2019 A ridge of high pressure over Pennsylvania will slide east to the Mid Atlantic Piedmont tonight. Clouds will increase across the state late today and tonight as an area of low pressure and its preceding warm front moves out of the midwest and crosses Pennsylvania Monday night.
306 PM CDT Sun Sep 15 2019 An Upper Level ridge will continue to move eastward Monday.
Inverted trough in the low levels tonight through Monday should move to the coast or slightly inland by Monday night.
257 PM MDT Sun Sep 15 2019 An upper level trough centered over eastern Arizona will slowly lift northeast across Colorado tonight and Monday. This will also result in cooler highs for Monday.
High Plains lee troughing will continue through the overnight. The mid level ridge will amplify across the greater region this evening and no thunderstorms are expected across the FA tonight. For Monday, lee troughing will continue with a fairly decent pressure gradient across the FA. The net result is breezy to occasionally windy conditions and with highs peaking in the lower 90s.
Otherwise, H5 ridging will continue to amplify to our west as we remain dry overnight. Above normal temperatures will continue through the middle of the work week, as the aforementioned H5 ridge continues amplifying and slowly sliding east.
A large upper low is situated over MO and stretches from the Canadian to Mexican borders. Upper low will continue to push through the area through Thursday. Clouds will build back in on Thursday as the center of the upper low tracks through. Highs will range from the lower 50s in NE AR to the mid 60s in parts of NE MS.
646 PM CDT Wed Mar 23 2022 The vertically stacked low pressure system currently sitting over the Mid-Mississippi Valley is slowly moving east. Below freezing air at 850 mb will be advected into the area tonight, making for a seasonably cool night. Cooler air paired with thick cloud cover will stunt highs Thursday, leaving them in the 40s areawide.
This is all associated with the core parent upper low and strong cold front of late, and will add a good bit of mid level turbulence this cycle as the cold core low tracks from SE OK to near S IL by daybreak. /Tonight through Thursday Night/ The aforementioned closed low/upper trough, that brought us our recent severe weather, has finally moved northeastward into the Midwest. Cloud cover has departed the region with the trough, leaving behind mostly sunny skies areawide. However, a tight pressure gradient has developed beneath the closed low. Another closed trough will move across the region tonight, dragging another cold front across the region. Low to mid 30s are expected north of Interstate 30, with an isolated freezing temp reading possible. But, if cloud cover is greater than anticipated, overnight temps could be a tad bit warmer.
751 PM EDT Wed Mar 23 2022 A cold front will move to the Carolina coast on Thursday.
734 PM EDT Wed Mar 23 2022 Severe weather threat continues this afternoon as potent low pressure tracks to the Great Lakes. Drier and cooler air circulating around the low will bring an end to showers and thunderstorms tonight.
950 PM EDT Wed Mar 23 2022 Scattered showers continue across central Indiana this evening as low pressure spins across northern Illinois. Upped sky cover as satellite shows extensive cloud cover with the low pressure system. Large scale trough and fractured upper low remain just to our west tonight.
(Tonight through Thursday night) Broad cyclonic flow persists over the central CONUS due to the presence of a large upper lvl trough. Temperatures have been much cooler than normal as a result over the past couple of days. We will continue to see quiet weather overnight as lows dip into the low to mid 30s in most locations. After a chilly start to the day, downsloping west winds and increasing hghts aloft behind the departing upper lvl trough will allow highs to climb into the mid to upper 70s Thursday afternoon.
657 PM CDT Wed Mar 23 2022 Summary: Light snow, possibly mixed with drizzle or freezing drizzle, will taper off tonight.
324 PM MDT Wed Mar 23 2022 High pressure has taken the controls for the near future across western Colorado and eastern Utah. With mostly clear skies and light winds, temperatures will drop to freezing in low valleys tonight and elevated valleys will see 15 to 20 degrees. As high pressure builds in, models are nudging up temperatures run to run. This is when the EPac Ridge is forced across the Intermountain West to the lee of the Rockies.
A strong area of closed low pressure was noted across northern IL this afternoon. Thus, even though it's cloudy, the higher sun angles and ambient light and ground warmth are both helping to melt any of the snow on the ground.
Temperatures this afternoon will be about 10 degrees warmer than highs yesterday.
1039 PM CDT Wed Mar 23 2022 The vertically stacked low pressure system currently sitting over the Mid-Mississippi Valley is slowly moving east. Below freezing air at 850 mb will be advected into the area tonight, making for a seasonably cool night. Cooler air paired with thick cloud cover will stunt highs Thursday, leaving them in the 40s areawide. Behind the front, cooler air will sweep down into the Missouri and Illinois.
(Today) Strange looking upper air pattern over the CONUS continues, with an elongated upper trough extending NE to SW from the Great Lakes clear down into northern Mexico. Smaller scale PV maxes continue to rotate about the broader trough. One vort was dropping south out of KS and could produce some light sprinkles or flurries across NE OK, while another vort lifting northeast across AR could bring some light rain/sprinkles or light snow/flurries to the higher terrain areas of NW AR thru around sunrise. By this afternoon, the broad upper trough will finally be on the move to the east, while one final vort max drops south from MO toward northeast AR.
(Today through Friday afternoon) The broad upper trough that has provided persistent northerly flow aloft and below average temperatures across the region will finally start sliding eastward today. Meanwhile, an upper level ridge will build across the western US, kicking off a warming trend as we head into the weekend. Increasing heights ahead of the upper ridge along with downsloping westerly winds and clear skies will allow for a more mild day today. Heights continue to increase with the building upper ridge for Friday.
1217 AM CDT Thu Mar 24 2022 (The rest of tonight) Slight chance pops were added for a light rain/snow mix across portions of northeast Oklahoma overnight in association with approaching mid level short wave on backside of upper trough.