Aikyam-Lab/Synoptic-Bench huggingface dataset:
303 PM MST Thu Nov 9 2017 Current surface analysis shows frontal boundary south and west of the area, with cold high pressure centered over eastern ND. Upper level analysis shows low over southern Hudson Bay, with ridging from the Rockies to the Southern Plains, and a low off of the Pacific NW coast. Skies remain mostly cloudy across the area with chilly temperatures, ranging from the lower 20s across far northwest SD to the mid 30s over northeast WY and far southwest SD. A warming trend will develop for the end of the week and the weekend, at least to near or slightly above average temps, as ridging moves over and eventually east of the region. Highs on Friday will be in the lower 40s to mid 50s, warmest over northeast WY and southwest SD.
Slightly cooler drier air will move into the Nature Coast and central Florida during Friday and with extra clouds high temperatures should be near to below normal. The low ceilings are expected to linger into midday then some improvement expected during the afternoon with mainly VFR conditions returning.
/issued 318 PM CST Thu Nov 9 2017/ A large area of cool high pressure centered over the Plains will continue to be the dominant feature over the southern Plains for another day or so.
High moisture remains trapped in the low levels, with a persistent cloud deck remaining overhead. The mid/upper level trough which passed this morning will be well east of the region tonight, and anticipate dry conditions. Weak coastal troughing will develop over the southern coast on Friday with another plume of higher moisture, and more isolated showers and light rain will be possible across the southern Coastal Bend and waters tomorrow. Temperatures on Friday will be warmer with highs in the upper 60s to lower 70s.
/issued 228 PM CST Thu Nov 9 2017/ Tranquil weather will continue across the Mid-South through the early part of the weekend as high pressure will dominate the weather pattern. However first, a reinforcing cold front will move through the area tonight. In fact, there will be little, if any cloud cover with it, but it will keep temperatures cooler through Friday Night.
Despite this, 03Z temps have fallen off into the lower/mid 40s areawide, as sfc ridging has built S to the Gulf coast.
401 PM CST Thu Nov 9 2017 High pressure continues to build into the region this afternoon. Drier air associated with the high pressure on the surface and aloft has eroded the cloud cover from this morning, which has allowed for more sunshine today with temperatures in the low to middle sixties. Overnight temperatures will be much cooler due to light winds and less cloud cover. Portions of Southeast Oklahoma and Southwest Arkansas could see some readings in the low to mid 30s, with temperatures approaching freezing across the northern sections of Sevier/Howard Counties in Arkansas and northern sections of McCurtain County Oklahoma. By Friday, zonal flow aloft will set up across the area, as the upper ridge flattens, another cold front will move across the forecast area, but it will be a dry system.
529 PM CST Thu Nov 9 2017 Cloudy conditions will continue through Friday despite high pressure being over the region. For tonight, have removed the freezing drizzle/drizzle potential as models are indicating enough low level dry air to limit any drizzle from reaching the ground. Overnight lows will be slightly warmer than the previous couple nights due to cloud cover expected across much of the forecast area tonight. With cloud cover combined with breezy winds, will keep temperatures east of US-83 on the cooler side (upper 30s to low 40s). Temperatures towards the eastern Panhandle and southwest Nebraska will see slightly warmer highs on Friday in the mid 40s to low 50s.
The cold front is through the area and rain has come to an end. The cold front has pushed a little further southeast, pushing past Apalachicola, FL, Tallahassee, FL, and Valdosta, GA at this point. Overnight, cooler air will begin to move in, though cloud cover through a good part of the night will prevent us from dropping below 45.
449 PM CST Thu Nov 9 2017 A cold front is currently pushing through the region this afternoon. The coldest readings will be across central Missouri where readings in the low 20s are expected.
The most noteworthy weather with this front tonight will be a widespread low cloud deck behind it as the lower theta e air will be shallow.
525 PM EST Thu Nov 9 2017 Rain and low clouds will continue over the region through this evening as an upper level trough currently over western GA moves eastward and across the Midlands this evening. High pressure along with cold dry air will begin building into the area during the early morning hours Friday and remain over the area through the weekend.
542 PM EST Thu Nov 9 2017 A strong cold front will cross tonight and bring scattered snow showers to the region. No major changes were needed for the early eve update as the strong cold front is poised to sweep the region through the evening. Dry weather is expected during this period with the passage of high pressure.
1015 PM EST Thu Nov 9 2017 High pressure along with cold dry air will begin building into the area during the early morning hours Friday and remain over the area through the weekend.
15 inches which is at the 25 percentile for this time of year, as a weak cold front moved through South Florida this afternoon bringing in some drier air to the area. The drier air should remain over South Florida tonight, before some low level moisture works back into the area ahead of the next cold front on Friday. Do to the unknown timing and duration of the lower vis and ceiling for these taf sites, will leave them in the VFR conditions at this time. /issued 310 PM EST Thu Nov 9 2017/ An approaching cold front will bring an increasing chance for showers, and the potential for thunderstorms, to round out this work week. Showers and thunderstorms will be possible on Friday as the front passes with a focus along the east coast where the highest available moisture will be.
However, a dry cold front will move through tonight bringing a quick shot of much colder air. Lows Friday night will be well below normal as lighter winds and dewpoints in the teens will allow temperatures to fall into the lower to mid 20s.
Scattered showers continue across the region this evening ahead of an upper level trough. A warm front lifts northward across the region early Friday morning focusing much of the precipitation across our northern zones. Precipitation will expand in coverage Friday afternoon and continue into the late Friday evening as the upper level trough moves across the Pacific Northwest. Snow level gradually lower to about 5-6k feet with the trough passage.
Skies have just about cleared across the cntrl TN Valley this Thu afternoon, with just a few lingering clouds continuing to drift ewd in association with a sharp upper trough axis beginning to cross into the srn Atlantic Basin. N winds around 10 MPH are firmly entrenched across the region, or more specifically sandwiched between 2 cold fronts. The quiet and tranquil wx pattern will definitely continue into the end of the work week, as a strong dome of high pressure out of the nrn/mid Plains states begins to build towards the SE in the wake of the dry frontal passage.
Do to the unknown timing and duration of the lower vis and ceiling for these taf sites, will leave them in the VFR conditions at this time. Another foggy morning ahead of a cold front on Friday. An approaching cold front will bring an increasing chance for showers, and the potential for thunderstorms, to round out this work week. Showers and thunderstorms will be possible on Friday as the front passes with a focus along the east coast where the highest available moisture will be.
Expect clear skies to be the rule in the near term as cool high pressure builds over the ArkLaMiss through Friday.
Overnight lows will be in the low to mid 40s. (Rest of the day) The fog will slowly begin to dissipate, but expect the low clouds to hang around for much of the morning before they begin to thin out by the early afternoon. 40 (Friday Night through next Thursday) Return flow in the low levels will continue through Friday night, continuing to increase moisture across the area. This will result in warmer overnight lows Friday night.
530 PM CST Thu Nov 9 2017 A surface cold front continued to push through Kansas this afternoon, extending from south of Ottawa to just south of Wichita to just south of Dodge City. The latest global and mesoscale models suggest this axis of low cloud will mainly affect central and south central KS, with southeast and east central KS remaining cloud- free in the lower troposphere. Far southeast KS along the OK border should warm up to the mid 50s with a little more direct insolation expected east of the low cloud axis.
Drier has has moved into the region and the northerly surface flow should increase after midnight with another cold frontal boundary.
607 PM CST Thu Nov 9 2017 Cold front will continue to settle southward into the Ohio River Valley. Given upstream dewpoints in the single digits and teens across the Dakotas into northwest Iowa, low temperatures will drop well below freezing despite less than optimal radiational cooling conditions. High pressure will build eastward across the Great Lakes on Friday, providing a continued cold/dry E/NE flow.
High pressure in NW MN moving slowly east and lightest winds there. Combination of falling snow and gusty south winds late Friday morning into the evening will cause some lower areas of vsby from falling snow/blowing snow, mainly north of the highway 2 corridor.
For now, will extend the mention of patchy fog down here where low level moisture remains the highest and to better match up with surrounding offices.
A weak low pressure system will pass to the north of our area tonight with decreasing precipitation chances north of Fresno County.
/Issued 312 PM CST Thu Nov 9 2017/ A cold front currently across central Missouri into Kansas will surge into the are Tonight resulting in below freezing temperatures again Tonight across portions of northeast Oklahoma and northwest Arkansas.
928 PM EST Thu Nov 9 2017 Surface cold front to the northwest of the region will continue to move southeastward tonight. Readings west of I-65 were generally in the lower 40s. Surface cold front will continue to sink south and eastward overnight and winds will shift firmly to the northwest and pick up a little bit. However, a dry cold front will move through tonight bringing a quick shot of much colder air. Lows Friday night will be well below normal as lighter winds and dewpoints in the teens will allow temperatures to fall into the lower to mid 20s.
A cold front will move through the area tonight and early Friday.
The first of which is a highly amplified trough across the Upper Midwest/Great Lakes region. A secondary mid-level trough was positioned across the Pacific Northwest. In between the two mid-level trough features, a mid-level ridge was traversing portions of the central and northern Plains. A mid-level Pacific moisture plume in association with the mid-level ridge has spawn a cirrus shield across the central Plains. At the surface, an anticyclone was centered across eastern ND. Transitioning into Friday, the aforementioned surface anticyclone will push into the Great Lakes region.
915 PM EST Thu Nov 9 2017 A cold front will move through the area late tonight through Friday.
1005 PM EST Thu Nov 9 2017 Strong cold front tonight.
A weak sfc cold front will push thru the mid state this evening. Lows tonight will be in the lower 30s northwest and across the wrn half of the Highland Rim to upper mid 30s near locations near the TN/AL border. May make some minor tweaks as press time approaches, but initially dry nwly flow aloft as the night time hours progress tonight into Fri, gaining more zonal characteristics Fri night thru Sat night, along with sfc ridging influences still persisting as strong high pressure moves eastward off the New England Coastline by Sun morning, will result in little if any cloudiness until late Sat night.
652 PM EST Thu Nov 9 2017 Rain and low clouds will continue over the region through this evening as an upper level trough currently over western GA moves eastward and across the Midlands this evening. High pressure along with cold dry air will begin building into the area during the early morning hours Friday and remain over the area through the weekend.
Cold front moving SE across northeast FL this evening. Some uncertainty as to when the low cloudiness will clear out.
KDRT is currently overcast VFR and with drier air in place in the low levels, should hold off on going IFR until around sunrise tomorrow morning.
Winds will be light out of the northwest overnight but as high pressure wedges down the east side of the appilachains on Friday. The lower ceilings we have seen across the area is beginning to lift slowly and we should see clear skies across the state tonight. Drier cooler air will spread across the region tonight and Friday as strong high pressure builds into the southeast U.
933 PM EST Thu Nov 9 2017 A cold front will move across the region this evening. High pressure and cold, dry air will build in for the end of the week.
942 PM CST Thu Nov 9 2017 9 PM CST surface analysis showed a 1036mb pressure ridge centered over northern MN. /issued 228 PM CST Thu Nov 9 2017/ Tranquil weather will continue across the Mid-South through the early part of the weekend as high pressure will dominate the weather pattern. However first, a reinforcing cold front will move through the area tonight. In fact, there will be little, if any cloud cover with it, but it will keep temperatures cooler through Friday Night.
649 PM EST Thu Nov 9 2017 Strong cold front tonight.
This introduction of additional moisture with in place instability will bring about rain showers and thunderstorms tonight, initially a warm front. Added QPF for the possibility of some wetting rain by morning as a cold front moves through the area. Thickness heights once rebound for Wednesday as the upper ridge begins its move in from the west. Winds that were southeasterly before the cold front disturbance moved through will shift around to the northwest, but not strong.
704 PM EDT Tue Jul 18 2017 High pressure will remain in control through Wednesday morning. A weak area of low pressure will move east across the Southern Great Lakes Wednesday into Wednesday night, forcing a weak cold front southeast across the area.
The latest surface analysis has a cold front into northern Nebraska. The low level jet is forecast to develop tonight over central Nebrsaka, however the NAM is still dry with this due to the warm mid level temperatures. Due to the low confidence. Cooler weather is still forecast to push into the forecast area this weekend as a front pushes south into the forecast area.
Look for the cold front that crossed our area this morning to push back north in the form of a warm front Wednesday afternoon. The highest temperatures will be across our southwestern counties, where 100-103 degrees will not be out of the question.
SPC Meso Analysis show quite nicely a mid to upper level wave will attempt to ride over the ridge late this evening into the overnight hours. Anglin An upper level ridge will be over the region for the next few days.
High pressure in the mid and upper levels of the troposphere will maintain mostly clear skies and tranquil conditions tonight, and for several more days to come. /Issued 301 PM CDT Tue Jul 18 2017/ Hot and humid conditions will continue for the next several days as high pressure aloft remains in control of the overall weather pattern.
1142 PM CDT Tue Jul 18 2017 An upper level ridge of high pressure will continue to build over the region. Highs on Wednesday should be a degree or so warmer than what we see this afternoon. Slightly drier dew points (due to mixing effects) will keep heat indices slightly cooler elsewhere across the Ozarks. The summertime ridge will continue to expand over the region to end the week.
Precipitable h2o values around 3/4 of an inch should be common by morning and surface dewpoints should bottom out in the low to mid 50s.
/issued 254 PM CDT Tue Jul 18 2017/ Hot temperatures will prevail over the Midsouth through late week, as a broad 594dm 500mb height ridge builds into the Midsouth from southern plains.
As we see down south, the other cells would pop off the higher elevations first and drift slowly. However, a short wave trough will be passing overhead sometime during the day on Wed, and provide enough of a shove/cooling aloft to help the cu become isold SHRA. Fast west-northwest flow aloft on the northern periphery of the upper ridge will reside over the area into the weekend. The other concern is for a several-day period of hot/humid conditions punctuated across the Lower Susquehanna Valley with blended guidance showing 2-3 days of 90+F max temps with max heat index potential approaching 100F. The hot temperatures should be eroded from the NW with time as the frontal boundary gradually sinks to the south in response to mean troughing developing late in the period.
922 PM EDT Tue Jul 18 2017 High pressure will remain in control through Wednesday morning. A weak area of low pressure will move east across the Southern Great Lakes Wednesday into Wednesday night, forcing a weak cold front southeast across the area.
545 PM MDT Tue Jul 18 2017 An upper level ridge will be over the region for the next few days.
The current ECMWF/GFS/RAP are indicating ample 0-6 km bulk shear with values around 60 kts but the low/mid level lapse rates and CAPE values are not impressive.
For Wednesday, expect temperatures to be 1-2F degrees warmer as low- and mid-level high pressure strengthen across the central CONUS and north Texas. Heat index values will be on the increase into the mid 90s for the Hill Country and 103-107F range for areas along and east of the I-35 corridor where humidity will be the highest.
High pressure in the mid and upper levels of the troposphere will maintain mostly clear skies and tranquil conditions tonight, and for several more days to come.
Temperatures have risen into the low 90s this afternoon with dewpoints generally in the lower 70s and upper 60s.
1212 AM EDT Wed Jul 19 2017 High pressure will continue to provide mainly dry and clear conditions tonight.
An upper level ridge of high pressure extends from the Four Corners east across the central Plains to the Mississippi River Valley. An easterly wave on the southern side of the ridge is moving across New Mexico, enhancing the convection in those areas and perhaps as far north as the San Juan and Four Corners region of our area this afternoon and evening. However, this feature will round the western periphery of the upper level ridge Wednesday and tap into the higher moisture pooled over AZ.
Chattanooga Airport, TN 71 93 73 95 / 10 0 10 0 Knoxville McGhee Tyson Airport, TN 69 92 70 92 / 10 0 10 10 Oak Ridge, TN 70 92 71 93 / 10 0 10 10 Tri Cities Airport, TN 64 90 66 91 / 10 20 10 10.
A weak inverted trough remains over the region on the western edge of the sub-tropical ridge. The ridge has become more elongated and does not appear to moving any farther south today. The nocturnal convection was very robust, however cirrus held the temps down over SE TX and SW LA with temps only in the low to mid 80s at noon. Late in the weekend an upper low will move west across the northern gulf coast.
One of these boundaries is noted by the 10 knot south wind in the lowest levels of the atmosphere. This is likely the result of a lakebreeze that formed as temperatures climbed into the lower 90s during the afternoon hours.
Back of the upper wave and an ill defined surface trof are helping to trigger a few convective showers with isolated thunder over the SE zones this afternoon. Old surface boundary is still hanging around and helping to pool some low level moisture so a shower cannot be ruled out, mainly along and south of I-84 and perhaps in the higher terrain of the Catskills and Poconos.
A pattern change has begun to unfold as the southern end of the upper level trough over the southeast states moves east of the region, while an upper high pressure area over central and southern plains builds into the region from the northwest. Low temperatures tonight will be in the lower 70s inland areas, mid 70s along the coastal sections, with upper 70s at the beaches.
Further northern activity may blossom latter in the day once the lower 90s are met. Energy is forecast to move down an East Coast trough axis and pinch off around the south and eastern periphery of the large Central U. ridge. The deep layer weak trough overhead of SE Texas will likely linger overhead one more day before the deep layer upper level ridge in the Plains edges southward. This pattern should lead to slightly warmer temperatures and less rain chances.
An upper level ridge will be over the region for the next few days.
/issued 418 PM CDT Tue Jul 18 2017/ This afternoon a large and elongated upper level ridge of high pressure was centered over Oklahoma and reached to the Tennessee Valley to the East and to the Four Corners Region to the West. More scattered shower and thunderstorm development was over the lower parts of East Texas across Lower Northwest and North Central Louisiana in association with available moisture, afternoon heating, and a weak shear axis just inland of the Gulf Coast.
/Tonight/ Weak area of low pressure situated off the southwest with an extended lobe stretching off to the northeast through northern IA into SE MN and central WI. H85 temperatures to climb into the mid 20s celsius Wednesday with a broad upper ridge in place aloft.
Ridging builds back in tomorrow which will warm temperatures a few degrees each day peaking in the upper 90s to low 100s across most of the area.
PoPs generally vary 40-60% onshore with the highest rain chances north and west of Panama City.
845 PM CDT Tue Jul 18 2017 Scattered to numerous showers and tstorms are developing along and ahead of the cold front from central WI to far nrn IA.
Across the region temperatures are generally within a degree or two from the readings yesterday though right along the coast they are trending warmer by three to six degrees. This is ahead of the monsoonal moisture that is also shifting westward as the upper high pressure stretches back toward the four corners region. A few degrees cooler in some locations and a few degrees warmer elsewhere but the overall trend will be static through the end of the week. The increased moisture in the air will make conditions less comfortable though and it may feel warmer to some especially those with outdoor activities. There will be a weak eddy toward morning and that should keep the low clouds pushed up against Santa Barbara County into tomorrow afternoon.
Given the higher sfc instability noted over the lower Toledo Bend Country, which coincides with the more defined outflow bndry on radar/satellite, have continued slight chance pops mention for this area until 06Z, dropping pops elsewhere as the very isolated -SHRA still ongoing can be covered with Nowcasts and should diminish soon given the lower instability noted on the evening mesoanalysis. Much of the cu field has diminished as well with the loss of heating, which should persist away from the remnant outflow bndrys overnight, as H850-700 ridging will persist overnight from E TX NE into the Mid-South region. Temps at the 02Z hour still remain quite warm, but even with the high dewpoints in place, should drop to the mid 70s areawide, similar if not a degree warmer than what was observed this morning.
Highs may be a few degrees warmer especially over the plains. The center of the upper ridge will shift eastward, allowing the flow across Colorado to switch from westerly to south and southwesterly. Daytime heating and any embedded short waves rotating around the upper ridge will then produce afternoon and evening shower activity that will be capable of producing locally heavy rainfall.
813 PM EDT Tue Jul 18 2017 High pressure will continue to provide mainly dry and clear conditions into tonight.
646 PM CDT Tue Jul 18 2017 Upper ridge will build over the area the next couple of days and likewise the heat.