Aikyam-Lab/Synoptic-Bench huggingface dataset:
802 PM EDT Mon Apr 10 2017 High pressure remains centered off the Mid Atlantic coast through mid week.
/Issued 226 PM CDT Mon Apr 10 2017/ Cold front, currently located near a Fayetteville/Sallisaw/Daisy line, continues to push south this afternoon.
1148 PM CDT Mon Apr 10 2017 The atmosphere ahead of a cold front identified by the fine line making its way into the eastern section of the forecast area has been capped but convective inhibition has just about been eliminated which is expected to lead to scattered thunderstorms over south central MO during the late afternoon into this evening.
Upper trough pivoting along the northern Gulf Coast will continue to nudge the upper ridge, which has had a stronghold over us this past week, eastward.
Thus, will keep categorical PoP's >80% going over the east/southeast CWA a good chunk of the night, before the low finally lifts northeast. Low levels remain very saturated through the night though, and winds will become nearly calm behind the low. With the low level moisture not going anywhere, think that dense fog will become a concern, especially after midnight, and will issue a Dense Fog Advisory for areas west of I-57, running from late evening into the first part of Friday morning. The fog should start to lift somewhat, but may persist into the afternoon as a warm front begins to take shape over central Illinois. Despite the extensive clouds on Friday, the warmer air surging in south of the front should help boost temperatures into the 50s in many areas.
630 PM EST Thu Jan 19 2017 An upper level trough will pivot northeast across western North Carolina into Virginia tonight and Friday.
(prev disc) High pressure ridge will slide southeast towards the northern Bahamas and cause winds to become south/southwest.
918 PM CST Thu Jan 19 2017 Mid-evening update to revamp the drizzle/freezing drizzle wording to just drizzle wording and to adjust the overnight low temperatures to above freezing for much of the clouded over and foggy portions of the cwa. This will work to keep temperatures from falling below freezing for much of the cwa that has very low clouds over it while ensuring the dewpoint either holds steady or gradually increases overnight as well. Areas where it is going to be foggy overnight and the temperature remains below freezing will get to experience freezing fog, where everything receives a coating of frost. With two weak upper waves transitioning over eastern SD/western MN, precipitation type still remains difficult to resolve, no less complicated by temperatures above freezing but ground temperatures in the mid/upper 20s.
Even while dewpoint depressions are rather wide off the ground this evening, warm advection working in tandem with moisture transport keep the thermal profiles way, way, way above freezing off the deck. When you combine this with the fact that boundary layer wet bulb temperatures are already above freezing, this means all areas should experience purely liquid precipitation. Rain will continue to the northeast on Friday as the negatively- tilted mid-level trough axis shifts northeastward.
Area of low pressure will lift northeast and across the Southern Appalachian Region tonight. Accompanying the low will be a thick low level cloud deck and widespread rain showers.
/ISSUED 334 PM CST Thu Jan 19 2017/ Rain from earlier this morning had cleared all but the eastern offshore waters as of 3 PM CST, with dry conditions expected to persist through the remainder of the evening and overnight hours as subsidence in the wake of a closed low lifting across the Central Plains overspreads the region. A few breaks in the clouds this afternoon had allowed for temperatures to climb into the low 70s along the Upper Texas coast this afternoon, with most locations reporting temperatures in the lower to mid 60s.
Also, while some of the observations in these areas are now near freezing, these values are likely to warm before precipitation occurs, especially as the rain encroaches on the dry air that is currently present in the 00z PBZ sounding.
Proton Previous Discussion Upper trough has moved into the West and split.
1033 PM EST Thu Jan 19 2017 High pressure is centered just southeast of the Florida Keys, lending to gentle southeast breezes at the available observation stations. Temperatures are in the lower 70s with dewpoints in the lower 60s. This evening's 00Z KKEY RAOB sampled a dry and inhibited profile, characteristic of deep ridging. High pressure will remain in place over the Bahamas overnight through Friday night.
There is a weak upper trough that moves across the CWA from 09Z to 21Z on Friday. The low level wind fields have southeasterlies this evening, then weak normal drainage winds overnight. There is plenty of moisture over the plains, but not in the lower levels on the GFS or the ECMWF. For temperatures, Friday's highs are 3-6 C cooler than this afternoon's.
Widespread showers were in progress across the greater Tennessee Valley this afternoon, as a warm front returns northward. Despite the front/clouds/showers, very warm temperatures for mid January continued with mid/upper 50s over southern middle Tennessee and far NE Alabama to the lower 60s near and south of the Tennessee River. An upper low across eastern Kansas has produced a diffluent flow across much of the southeastern states, including the Tennessee Valley.
947 PM EST Thu Jan 19 2017 The forecast is generally on the right track with the rain spreading into our area, which is associated with a negatively tilted upper trough and cold front aloft.
210 AM EDT WED SEP 21 2016 Dry weather is expected with temperatures running much above normal through the work week as upper ridging remains overhead.
An upper low along the Pacific NW coast will cutoff and pivot into Oregon today. Precipitation will development east of the low center, focusing over s-central Idaho this morning, expanding to the north and west through the afternoon. A dry slot rotating around the low will inhibit shower development over southeast Oregon and far southwest Idaho (areas near the OR/ID border) through this afternoon. For tonight and Thursday the low tracks eastward along the southern Oregon border. Dynamics and moisture ahead of the low will continue to generate precipitation across s-central Idaho (though a break looks possible early Thursday morning). Moisture wraps around the northwest side of the low Wednesday night and Thursday increasing the chance of showers across Baker and Harney counties in southeast Oregon. Temperatures trend cooler through Thursday with today's highs near normal and Thursday's highs 10-15 degrees below normal.
342 AM EDT WED SEP 21 2016 Upper low dropping through the western U. These waves should stream into Michigan late tonight through Thursday night, guided by an upper trough passing through Manitoba and Ontario as it pivots down around the Hudson Bay low. This should trigger a wetter pattern over the Great Lakes, with much of the activity expected to remain over the northern half of Michigan where the frontal zone will stall, and where right entrance region forcing will coincide with the nose of the low-level jet tonight and Thursday.
638 AM EDT Wed Sep 21 2016 High pressure will remain over the Ohio Valley through the rest of the work week, allowing dry weather to continue.
657 AM EDT Wed Sep 21 2016 High pressure will remain in control of the weather pattern through Thursday with dry and unseasonably warm conditions.
A strong cool Pacific low pressure system is forecast to plunge into the western states on Thursday. A cold front moving through Arizona will gather and push the deep tropical moisture eastward across central Arizona, with a good chance of afternoon thunderstorms Thursday afternoon and evening.
222 AM EDT WED SEP 21 2016 High pressure and no change in airmass will keep temperatures above normal through the end of the work week.
434 AM CDT WED SEP 21 2016 (Today and Tonight) Upper ridging will continue to dominate the state of Texas through tonight, with the center of the upper ridge over the forecast area. Afternoon highs today will be in the mid 90s, around 10 degrees warmer than normal. Morning lows tomorrow will mostly be in the upper 60s, around 5 degrees warmer than normal.
105 AM EDT Wed Sep 21 2016 High pressure will give dry and warm weather for the rest of the work week. High pressure over the region will provide another clear night with fog development expected again early morning with strong radiational cooling. With nearly maximum insolation Wednesday tempratures will again warm into the lower and mid 80s. Minimal change to the long wave pattern is progged through late week with flat ridging dominating the Great Lakes and Upper Ohio Regions. Confidence is rather low, due to the drier air mass and warmer temperatures yesterday.
413 AM EDT Wed Sep 21 2016 High pressure will dominate our weather for the next couple days with dry conditions and above normal temperatures for late September.
502 AM CDT Wed Sep 21 2016 The passage of the weak cool front has brought drier and slightly cooler air to SE TX overnight/this morning. However with the low- we dewpoints (along with clear skies/calm winds) we will also see some patchy fog across the area through the mid morning hours. Despite the cooler (than it has been) start to the day, high temps this afternoon are still expected to be slightly above normal. The consensus remains with a highly amplified slow moving upper low/trof developing out west Sun before it begins to slowly translate east with an associated cold front.
315 AM EDT WED SEP 21 2016 High pressure will build to our south today and tonight. A cold front with limited moisture will drop south into the region tonight with a few clouds before stalling. This front will return north as a warm front on Thursday.
420 AM EDT WED SEP 21 2016 A surface pressure trough near the coast and upper low over the area will continue through Thursday.
643 AM EDT WED SEP 21 2016 Dry weather is expected with temperatures running much above normal through the work week as upper ridging remains overhead.
Otherwise, a mostly clear and quiet overnight is in store with low temperatures falling into the lower to middle 70s. The local area is still forecast to remain on the west side of the upper low, which is typically drier.
238 AM CDT Wed Sep 21 2016 Water vapor imagery shows an upper low circulating off the Washington coast with an intensifying 300mb jet on the back side of the upper low/trough. This will continue today, then abate somewhat tonight as the upper trough shifts a bit farther south and transitions from positively tilted to neutral.
/Issued 324 PM CDT TUE SEP 20 2016/ Upper level ridge over the southern plains will slowly break down and move east with time through the late week. The models are in fairly good agreement on the strength and motion of the large upper level low that moves into the western U.
603 AM EDT WED SEP 21 2016 High pressure will build to our south today and tonight. A cold front with limited moisture will drop south into the region tonight with a few clouds before stalling. This front will return north as a warm front on Thursday.
A few showers will continue in the coastal waters in low level convergent low and synoptic lift around mid level trough. mid and upper level low pres system across NC/SC area will drift slowly southward today through late tonight. low level trough axis across the region from southwest to northeast will help sustain scattered showers and a few storms in the evening. Weak low pres expected underneath the upper level low near coastal GA area. Highs will be held in check by cooler 850 mb temps and partly to mostly cloudy skies. The upper level low over the southeastern states opens up on Thursday and the trough gradually lifts northeast pushing Karl ahead of it.
Upper trof dropping across the Pacific Northwest with moisture streaming across northern California and into Montana. Scattered showers continue over the northern zones this morning before briefly ending as the upper low drops south and flow changes orientation and the band of showers redevelops to the southwest.
Wet conditions and cooler temperatures are in store for the next several days. An upper low and trough currently moving onshore across the Pacific Northwest coast will continue to develop and slowly move southeast into the Great Basin area Wednesday into Thursday. Models are in fairly good agreement through the short term so forecaster confidence is high for cooler and wetter conditions. Temperatures will be much cooler than the past several days with 50s today and Thursday, with the exception of some 60s across the far southeast areas. Models continue to struggle with handling the movement of the upper low as it moves northeast and then eastward away from the region.
157 AM EDT Wed Sep 21 2016 High pressure will remain in control of the weather pattern through Thursday with dry and unseasonably warm conditions.
Looking west, water vapour depicted the main feature of interest for the short term; a deepening upper trough pushing into southwest Canada/northwest US. Today through Thursday, upper trough deepens and closes off over northern CA/OR tonight - moving into UT Thursday. Upper forcing increases ahead of upper low with southwest flow aloft. Shower and embedded thunderstorm chances increase overnight and especially Thursday night as first piece of energy rotates into the CWA ahead of upper low.
357 AM EDT Wed Sep 21 2016 High pressure will build over the region through Thursday.
1216 AM CDT WED SEP 21 2016 Quiet conditions continue through most of Wednesday as weak mid- level ridging settles in across the midwest.
but did not add precipitation over the lower elevations and valleys at this time due to the extremely dry boundary layer. Flow is beginning to back from zonal to southwesterly as upstream positively tilted trough deepens along the Pacific Coast. Meanwhile, a weak sfc cold front will slide into the area Wednesday and with a thicker cloud canopy, afternoon highs will be 5-10 degrees cooler west and 10-20 degrees cooler east. Precip chances increase west-east Thursday and Thursday Night as the pattern amplifies ahead of broad area of low pressure advancing thru the Great Basin.
359 AM EDT Wed Sep 21 2016 High pressure will remain over the Ohio Valley through the rest of the work week, allowing dry weather to continue.
Based on persistence, a cloud line will likely form again today, despite significant dry air in the lower levels.
332 AM EDT Wed Sep 21 2016 High pressure will remain in control of the weather pattern through Thursday with dry and unseasonably warm conditions.
328 AM EDT WED SEP 21 2016 High pressure will remain in control of the weather across the region into Thursday.
257 AM CDT WED SEP 21 2016 The good news is that the temperatures will be cooler than those that were recorded yesterday and that the surface dew points will also be lower. The bad news is that the high temperatures this afternoon will generally be 10 to 15 degrees above normal for this time of year. The unseasonably warm temperatures will be the main concern for the remainder of the work week as high pressure at the surface and aloft prevails. After the hot and dry work week, a wet and cooler weekend looks to be on tap for eastern Oklahoma and western Arkansas as an upper level low currently just off the Oregon coast gains strength as it moves across the rockies and makes slow progress into the plains as the upper level pattern becomes much more amplified.
117 AM EDT Wed Sep 21 2016 High pressure will remain in control of the weather pattern through Thursday with dry and unseasonably warm conditions.
519 AM CDT WED SEP 21 2016 High pressure at the surface and aloft will yield yet another warm and dry day across the region today. After a coolish start in the upper 60s/lower 70s, plenty of sun and the relatively dry airmass will result in afternoon highs reaching the lower/mid 90s. Small rain chances return tomorrow as the surface/low level ridge shifts eastward allowing at least shallow moisture to return amid the southeasterly onshore flow.
509 AM CDT Wed Sep 21 2016 Tranquil weather conditions prevail across the local area once again this morning, provided by deep-layer northeasterly flow between a cutoff upper low situated across coastal portions of NC/SC and a mid- tropospheric high centered across northern TX. The combination of clear skies and light winds has allowed temperatures to fall into the u50s/l60s in outlying areas, with readings a few degrees warmer in the larger metropolitan locations.
1212 AM CDT WED SEP 21 2016 The warm weather conditions will persist across our region under the influence of an upper level ridge of high pressure over the southern and central plains. Chances for thunderstorms will return Wednesday and continue intermittently into Thursday as a couple of upper disturbances lift out of the desert southwest/Baja region onto the plains, kicked out by a potent upper trough digging south from the Pacific Northwest.
A ridge of high pressure continues to remain in control of the weather pattern for the foreseeable future. An area of low pressure continues to wobble off the Carolina coast, but precipitation should stay east of the mountains and out of the MRX forecast area for today.
323 AM EDT Wed Sep 21 2016 High pressure will give dry and warm weather for the rest of the work week. With nearly maximum insolation Wednesday under dry high pressure temperatures will again warm into the lower and mid 80s. Minimal change to the long wave pattern is progged through late week with flat ridging dominating the Great Lakes and Upper Ohio Regions.
341 AM CDT WED SEP 21 2016 The heat will continue today as upper level high pressure remains centered over the region. High temperatures should be a couple of degrees cooler than yesterday due to a slight weakening in the ridge. Expect afternoon highs in the middle and upper 90s with heat index values only a few degrees warmer. The weather Thursday will be very similar to today but maybe a degree or two cooler.
329 AM CDT WED SEP 21 2016 Have an upper level ridge centered over TX with an upper trough moving onto the NW Coast.
With an upper level ridge of high pressure remaining in place over the region for the next few days, dry weather and above normal temperatures continue through the short term periods. Drier air and clear skies have allowed temps early this morning to dip into the low to mid 60s across the ArkLaMiss (coolest morning of the season for some locations), but these conditions should also lead to max temps in the mid 90s for a good portion of the area today. As the lower level ridge translates northeastward over the next few days, easterly low level flow will lead to increasing humidity which should moderate temperatures some.
KCOD/KCPR/KLND/KRIW/KWRL ROUTES The main concern will be MVFR ceilings and mountain obscurations developing Wednesday evening in wake of a cold front pushing south Wednesday afternoon and evening. Attention then turns to increasing chances of convection Wednesday afternoon into the overnight hours ahead of a slow moving upper low that will impact the area for a few days. tonight Through Wednesday Breezy to windy conditions will increase tonight and Wednesday as a large Pacific low pressure trough moves inland.
An upper trough over western Washington will gradually sink south into the forecast area Wednesday, then into California by Thursday. Expect cool nights and mild days through much of the week, with a few isolated showers over the higher terrain.
318 AM EDT Wed Sep 21 2016 A very quiet period is in store, with ridging at the surface and aloft dominating our weather. With the westerlies well to our north and high geopotential heights due to the ridge, we will continue to see above normal temperatures.
127 AM EDT Wed Sep 21 2016 High pressure will remain over the Ohio Valley through the rest of the work week, allowing dry weather to continue.
338 AM CDT WED SEP 21 2016 Upper level ridge over Texas will weaken over the next 24 hours while the next storm system comes ashore the Pacific Northwest. the lee trough will tighten just a bit providing us with afternoon winds in the 10- 15 mph range. Thanks to the cirrus, we should be a couple degrees cooler than yesterday as well. We will continue to be warm going into the weekend as surface flow continues to be out of the south to southeast ahead of a cold front over the Central Plains. The front will be pulled northward as a deep upper level low pushes eastward across the Rockies.
524 AM CDT Wed Sep 21 2016 The passage of the weak cool front has brought drier and slightly cooler air to SE TX overnight/this morning. However with the low- er dewpoints (along with clear skies/calm winds) we will also see some patchy fog across the area through the mid morning hours. Despite the cooler (than it has been) start to the day, high temps this afternoon are still expected to be slightly above normal. The consensus remains with a highly amplified slow moving upper low/trof developing out west Sun before it begins to slowly translate east with an associated cold front.
The upper level low over western Canada has dropped into northwest Washington today and will settle over western Oregon on Wednesday. An upper low is developing over WA.
/issued 325 PM EDT Tue Sep 20 2016/ A cut off low pressure centered over the Carolinas lingers over the region through mid week and gradually weakens by the end of the week. The low may help in bringing slightly cooler temps aloft over S Fl, which could enhance the overall instability and thunderstorm activity today through mid week. High pressure will begin to build across the Atlantic while the low continues to weaken veering winds to the southeast. By Thursday, the activity will decrease as the aforementioned low gradually weakens as its moves ne and warmer temperatures return aloft. High temperatures will remain in the low 90s and low temperatures in the mid to upper 70s.
A cold front will blast through the region Wednesday afternoon and into Thursday bringing showers and thunderstorms.
254 AM EDT Wed Sep 21 2016 High pressure will dominate our weather for the next several days, with dry conditions, and above normal temperatures for late September.
653 AM EDT WED SEP 21 2016 A surface pressure trough near the coast and upper low over the area will continue through Thursday.
626 AM EDT WED SEP 21 2016 High pressure will remain in control of the weather across the region into Thursday.
In addition, temperatures are expected to remain much cooler than normal the next few days, which will keep snow levels down to around 6500-7500 ft for much of the area. Those planning outdoor activities, especially in the high terrain near the Divide and Glacier National Park, should expect wet and raw backcountry conditions during this period.
226 AM EDT WED SEP 21 2016 A surface pressure trough near the coast and upper low over the area will continue through Thursday.
Today Through Thursday High pressure will be over the area through the period.
456 AM CDT WED SEP 21 2016 As forecast, easterly winds on the south side of the low-level anticyclone have pushed somewhat drier air into eastern Oklahoma and pushed the moisture axis to the west. So this will help take the edge off of the high heat index values we have seen the last few days.
Because of the cloud cover and slightly cooler airmass, highs will be lower today but still mild with readings in the 80s across northeast Colorado. Best chance for showers will be over the higher terrain where the dry layer will not be as thick. Will go with 10-30 pops over the higher terrain south of I-70. For the lower elevations where it will be drier, will go with mainly 10 pops. Precipitation amounts are expected to be light where convection moves off the higher terrain. Lows will be cooler tonight but still above normal. A cold front is expected to enter the northeast corner late tonight and could bring low clouds Thursday morning. Southwesterly flow aloft will increase in speed as an upper trough/closed low moves east-southeastward on Thursday and Thursday night.
333 AM EDT WED SEP 21 2016 Dry weather is expected with temperatures running much above normal through the work week as upper ridging remains overhead.