Aikyam-Lab/Synoptic-Bench huggingface dataset:
plan on another cooler and dry night with dew points in the 50s to low 60s and lows in the mid 50s to mid 60s at most valley locations. Chattanooga Airport, TN 65 88 67 88 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 63 87 65 86 / 0 0 0 0 Oak Ridge, TN 63 87 66 86 / 0 0 0 0 Tri Cities Airport, TN 58 85 60 85 / 0 0 0 10.
/issued 908 PM CDT Sun Jul 30 2017/ Wx map shows weak drier high pressure building over the region, with dewpoints ranging from the mid to upper 60s this evening. Slightly cooler and drier air has filtered into the region, with SFC dewpoints in the mid/upper 60s along and north of the I-10 corridor and in the lower 70s down to the coast. Better rain chances still look on tap for the mid to late week period as the frontal boundary lifts north and stalls near the coast and an upper trof digs into the Central and Eastern US. 13 A light northerly flow and dry weather will prevail through tonight in the wake of the cold front that pushed through the coastal waters earlier Today.
Outflow boundaries and the weak cold front continued to generate showers and thunderstorms across central and western parts of our area. Rain chances continue overnight mainly across the Edwards Plateau and Rio Grande Plains over the warmer/moist sector of the "cold" front.
to the low-mid 60s in the southern valleys. An upper trough crossing Quebec will push a weak cold front southward into upstate NY. Latest model runs continue to show isolated convection developing in vicinity of the Lower Lakes which may drift south/east into the northern tier of central PA during the afternoon/early evening as a few, brief, light-mdt rain showers before dissipating.
Drier air continues to filter in to our area this evening as the front and embedded low pressure center over the eastern Gulf continue to drift southward. As of the 8 PM Tropical Weather Outlook, the low pressure center is located west of Tampa in the east central Gulf this evening.
823 PM EDT Sun Jul 30 2017 Fair weather with below normal temperatures and humidity will prevail the next few days, as Canadian high pressure works into the region.
916 PM CDT Sun Jul 30 2017 Better flow and theta-e air will support better chances for showers and thunderstorms over the High Plains this evening and overnight.
VFR conditions are most likely, but some occasional MVFR ceilings will be possible Monday morning as the low levels moisten. /issued 235 PM CDT Sun Jul 30 2017/ SHORT TERM (Now through Monday Night): The heat we've been experiencing this weekend should ease a bit as we move into the new week, as the midlevel ridge axis shifts westward. The bump in moisture will also bring an increase in cloud cover and slightly cooler temperatures for Monday.
/issued 329 PM CDT Sun Jul 30 2017/ (Tonight and Monday) A weak cold front extended from Big Spring to San Angelo to south of Brownwood at 330 PM. Northwest flow will be in place by Monday night as trough across the eastern U. shoves the ridge over our area now back to the west.
1216 AM EDT Mon Jul 31 2017 High pressure will maintain dry and seasonable weather through early this week.
Strengthening high pressure aloft across the Great Basin will bring a gradual warming and drying trend to the region through the upcoming week. The mid level high remains centered over nwrn NV this eve while at higher levels, the high is centered over w TX with a s to swly flow over UT.
A deep upper level trough extends from the mid Atlc into north FL with a surface frontal boundary stalling across the northern zones overnight. Weak low pressure across the ern Gulf is forecast to move east or east-southeast toward the west coast into Monday morning. Will continue 50 percent chance of showers for the srn zones and also near the low level frontal boundary across far nrn areas. Lows will drop into the lower to mid 70s. Winds up to 10-15 knots with the highest seas building to 4 ft across the nrn offshore waters into the late night hours.
Winds around this low will continue to be elevated Tonight, therefore small craft advisory issued. A cold front will extend to the West of this low.
652 PM CDT Sun Jul 30 2017 Sprawling high pressure centered over the Midwest will dominate the weather across central Illinois over the next 24 hours. The airmass will begin to moderate somewhat by Monday, as high temperatures climb into the lower to middle 80s: however, humidity levels will remain low.
Temperatures this evening are warmer than this time last night, but forecast lows are warmer in the upper 50s to low 60s. Highs will be slightly warmer than today. Sprawling high pressure centered over the Midwest will dominate the weather across central Illinois over the next 24 hours. The airmass will begin to moderate somewhat by Monday, as high temperatures climb into the lower to middle 80s: however, humidity levels will remain low.
714 PM EDT Sun Jul 30 2017 High pressure will cross the region tonight. A cold front will cross the region tomorrow afternoon and night.
552 PM MDT Sun Jul 30 2017 Moist southwest flow combined with a weak trough of low pressure will continue to fuel showers and thunderstorms through the evening hours across southern sections of the forecast area with isolated to scattered activity to the north. A ridge of high pressure will build over the western US through the workweek.
954 PM EDT Sun Jul 30 2017 High pressure extending from the Midwest, into the northeastern states, will keep our weather mainly dry through Monday.
637 PM CDT Sun Jul 30 2017 High pressure continues over Arkansas at this time.
Templer Previous discussion - Upper ridging continues to provide hot and dry weather conditions across the region this afternoon with highs across the CWA ranging from the middle 90s near the MT/ND border to the upper 90s and around 100 elsewhere. A cold front will push through the area tonight and Monday switching winds to the north and bringing a relief from the heat. It will perhaps be somewhat warmer in the Yellowstone region where the front may take longer to get to. Lastly, monsoonal moisture streaming north will interact with cooler air coming from the north across the CWA, and this may allow for some convection initiation across SE MT.
An area of low pressure has formed along the boundary over the eastern Gulf of Mexico approximately 140 miles west of Tampa. Overnight, numerous showers and isolated thunderstorms will continue to develop over the eastern Gulf of Mexico associated with the area of low pressure/frontal boundary.
1219 AM EDT Mon Jul 31 2017 High pressure remains centered over the Mid Mississippi River Valley into the Southern Great Lakes. This high will settle toward the Ohio Valley through Monday. A very weak cold front will be pushing through northern Lower Michigan Monday afternoon and evening and may have just enough support to bring a late day thunderstorm to MBS.
/Nisbet 00Z TAFS: High pressure aloft to deliver clear skies and dry conditions.
/issued 231 PM CDT Sun Jul 30 2017/ The 500mb ridge that is directly overhead today will gradually move to the southwest over the next several days. More isolated to scattered convection can be expected during the afternoon hours for the next several days as the aforementioned 500mb ridge moves to the southwest. At the same time, a stronger upper level ridge will be developing over the Great Basin placing West Texas under northwest flow aloft. The NAM does erode the high PWs by mid week but is an outlier in its solution. The upper ridge will eventually weaken/break down as a series of upper level troughs move across Canada. The ridge will still be positioned to the west of the region keeping West Texas under northwest flow aloft.
1155 PM EDT Sun Jul 30 2017 High pressure will cross the region tonight. A cold front will cross the region tomorrow afternoon and night.
This will be mainly ahead of the cold front. Cold front will move southeast through the remainder of the forecast area Monday night with chance of thunderstorms along it as it moves through.
Brusda An upper level ridge of high pressure will be over the region through Monday, resulting in another warm day on Monday.
1046 PM MDT Sun Jul 30 2017 Moist southwest flow combined with a weak trough of low pressure will continue to fuel showers and thunderstorms through the evening hours across southern sections of the forecast area with isolated to scattered activity to the north. A ridge of high pressure will build over the western US through the workweek.
1139 PM CDT Sun Jul 30 2017 Little change in the forecast as high pressure over the Mid Mississippi River valley is responsible for the unseasonably cool and dry weather over the area. Northwest flow aloft is being driven by a trough over the northeastern US and ridge covering most of the western part of the country. The combination of light east to northeasterly flow and clear skies in complex terrain will likely drive temperatures a couple of degrees cooler over areas of southeast Missouri and the Ozark valleys tonight.
Monsoonal moisture continues to flow over the region around an upper high over central Texas. Temperatures will be slightly warmer tomorrow to keep CAPE values similar to today.
701 PM EDT Sun Jul 30 2017 High pressure centered over the Midwest will continue to settle toward the Ohio valley tonight through Monday. A very weak cold front will be pushing through northern Lower Michigan Monday afternoon and may have just enough support to bring a late day thunderstorm to MBS.
727 PM EDT Sun Jul 30 2017 High pressure will maintain dry and seasonable weather through the start of the work week.
Also, isolated showers and thunderstorms near the eastern Mohave County border may still develop overnight on the edge of the inverted trough over Arizona. Meanwhile, high pressure over northern Nevada will keep thunderstorm activity somewhat suppressed there.
High pressure aloft will be centered near the Nevada border on Monday for continued hot and dry conditions. Mostly clear skies and light winds will continue on Monday, with a few high based cumulus clouds developing over the higher mountains in the afternoon.
623 PM CDT Sun Jul 30 2017 H5 analysis from earlier this morning had high pressure extending from Texas into California. A low amplitude ridge was noted over the western CONUS north to Alberta and Saskatchewan. East of this feature a closed low was located over Labrador Canada with a trough extending to the southwest along the east coast of the CONUS. Forecast K indexes in the western CWA are in the lower 40s this afternoon and early evening, lending further support to the notion of heavy rain.
/12/ Prior discussion below: Tonight and Monday: Dry weather with slightly cooler than normal temperatures will continue through Monday. Normal morning lows run in the lower 70s while normal afternoon highs run in the lower 90s.
1018 PM EDT Sun Jul 30 2017 High pressure will cross the region tonight. A cold front will cross the region tomorrow afternoon and night.
However, the low-level pressure gradient will be a bit more relaxed tonight. Temps will be a little warmer but still remaining just below normal with highs in the upper 80s.
909 PM EDT Sun Jul 30 2017 High pressure will maintain dry and seasonable weather through the start of the work week.
1121 PM CDT Sun Jul 30 2017 H5 analysis from earlier this morning had high pressure extending from Texas into California. A low amplitude ridge was noted over the western CONUS north to Alberta and Saskatchewan. East of this feature a closed low was located over Labrador Canada with a trough extending to the southwest along the east coast of the CONUS. Forecast K indexes in the western CWA are in the lower 40s this afternoon and early evening, lending further support to the notion of heavy rain.
908 PM CDT Sun Jul 30 2017 Wx map shows weak drier high pressure building over the region, with dewpoints ranging from the mid to upper 60s this evening. Slightly cooler and drier air has filtered into the region, with SFC dewpoints in the mid/upper 60s along and north of the I-10 corridor and in the lower 70s down to the coast. Better rain chances still look on tap for the mid to late week period as the frontal boundary lifts north and stalls near the coast and an upper trof digs into the Central and Eastern US. 13 A light northerly flow and dry weather will prevail through tonight in the wake of the cold front that pushed through the coastal waters earlier Today.
725 PM EDT Sun Jul 30 2017 High pressure with cooler and drier air prevails through mid week. High pressure centered over the region will be in control through much of the work week.
/BB/ Tonight and Monday: Dry weather with slightly cooler than normal temperatures will continue through Monday. Normal morning lows run in the lower 70s while normal afternoon highs run in the lower 90s.
Surface analysis this evening places a 1022 mb ridge of high pressure over the Upper Midwest and Great Lakes Region.
With the deep layer trough digging into south Florida, general diffluence aloft will aid in shower and thunderstorm development overnight, mainly over the mainland. Although possibly overdone, will keep the high chance pops for the overnight period in the zone forecasts and scattered showers and thunderstorms over the coastal waters.
Although there is an inverted trough is in the vicinity, given the latest observed satellite/radar trends and short term convective model output, we have scaled back PoPs considerably overnight but will still maintain slight chances.
As high pressure builds over the region tonight into the middle of the week. /Issued 129 PM PDT Sun Jul 30 2017/ High pressure will bring hot temperatures to the region this week with records possible.
On Sunday a building h500 ridge will cap most convection leaving just widely scattered thunderstorms.
633 PM CDT Sat Jul 29 2017 The ridge of high pressure over Minnesota and Iowa will continue to influence the weather through Sunday.
1027 PM EDT Sat Jul 29 2017 High pressure will remain across the area into Sunday with fair and seasonably mild weather.
835 PM EDT Sat Jul 29 2017 A cold front extended from eastern North Carolina to northern Texas this afternoon with a large area of high pressure over the Great Lakes and Upper Mississippi Valley.
921 PM CDT Sat Jul 29 2017 Convection over the high plains, hasn't really gotten going too well, considering the weak moisture transport in wrn KS. Confidence remains high that below normal temps will remain in place through Tue with highs in the low to mid 80s. Normal highs for this time of year are in the low 90s. The main story through these extended periods will be another cold front set to come through toward the end of the work week. This will allow an unseasonably strong cold front to push- in from the northeast. Convection over the high plains and NW KS is expected to form into an eastward forward propagating MCS late tonight.
Aloft, the northwest flow pattern will also persist with the upper jet streaming overhead between the Mid- Atlantic trough and the Plains ridge. Sunday morning lows will range from the mid 50s to around 60 degrees, and a couple urban centers may hold in the low 60s. Sunday looks sunny and a bit warmer than today. 1000-850 mb thickness increase suggests highs around 3-4 F warmer than today, so 80-85 seems reasonable.
A weak cold front will move through with north to northeast winds expected tomorrow. Weak SFC front is forecast to slowly move south towards and eventually through the area tonight as an upper TROF continues to dig over the ERN CONUS. SUN morning low temperatures will be notably cooler, especially over interior E TX/Central LA where the difference could be as much as 10 degrees lower than the balmy near 80 degree readings observed this morning.
Coverage of showers and storms also expected to increase by later tonight into Sunday morning as a cold front drops south across the area. Cold front drops south across the area later tonight into Sunday morning producing widespread showers across the area. West-southwest winds will gradually veer to the northwest tonight then to the northeast early Sunday morning as a cold front drops south across the waters.
616 PM CDT Sat Jul 29 2017 Water vapor imagery this afternoon shows a ridge axis to our west, centered over the high Plains of the west, with the attendant downstream trough inducing a northwest flow across the northern and central Plains of the CONUS. And, this nice weather trend will persist through the rest of the weekend and into the beginning of the work week as the ridge axis remains to our west, allowing seasonally cool and dry air to prevail.
West TX upper high centroid seems to have become the dominant circulation today. Deformation (atmospheric stretching) between the west TX circulation and a second upper high center over NV helping to get storms going over much of western and central NM early this afternoon.
Confidence remains high that below normal temps will remain in place through Tue with highs in the low to mid 80s. Normal highs for this time of year are in the low 90s. The main story through these extended periods will be another cold front set to come through toward the end of the work week. This will allow an unseasonably strong cold front to push- in from the northeast. Convection over the high plains and NW KS is expected to form into an eastward forward propagating MCS late tonight.
748 PM EDT Sat Jul 29 2017 A cold front extended from eastern North Carolina to northern Texas this afternoon with a large area of high pressure over the Great Lakes and Upper Mississippi Valley.
A deep trough is now carved out over the eastern CONUS today, leaving our area in NW flow aloft. Drier air continues to back door its way into the region, due to the presence of a large surface anticyclone over the Great Lakes region.
/issued 400 PM CDT Sat Jul 29 2017/ A diffuse cold front continues to slowly move south across the area and is still located across East Texas and Louisiana south of Interstate 20. A few isolated showers continue to develop along the front, but overall rain chances are decreasing as an upper trough axis moves farther away from the region.
Convection should be less on Sunday due to a slightly stronger upper ridge and drier air mass.
For tonight, expect clear skies and a bit cooler weather with lows dipping into the 60s areawide. Several of the models deepen this low into a tropical like feature, so it will need to be monitored closely.
Rare cold front (for this time of the year) moving slowly south across the southeastern states today, will be approaching the coast early this evening. The front should be offshore between 03Z-06Z this evening, with drier and slightly cooler air moving into the area in its wake and rain chances ending. Low temperatures tonight generally 2 to 3 degrees cooler tonight than past several nights, ranging from the lower 70s inland to mid 70s near and along the coast. Should have a fair amount of sunshine on Sunday, so daytime highs will warm into the lower 90s for most areas, although heat indices will not be as high as early this week due to lower dewpoints (upper 60s and lower 70s) and afternoon relative humidity around 50 to 55 percent.
A drier and slightly cooler air mass is sliding south across the area as temperatures are in the middle 80s as dewpoints are in the middle 50s to the lower 60s this afternoon. Lows tonight will drop into the upper 50s to the lower 60s with some locations across central Missouri likely dropping into the middle 50s. The cool and dry conditions will continue Sunday as highs once again warm into the lower 80s with low humidity. The upper level ridge will also remain west of the area leaving the area in a northwest upper level flow pattern. This will help keep highs in the low to middle 80s with lows in the 60s each night through mid week.
With the upper high maintaining strength, expect the moist axis to have trouble producing more than 10 percent coverage of precipitation. Some shifty/gusty winds should be anticipated for late Sunday, but will keep out of TAFs due to the low coverage. The "cold" front could bring temperatures one or two degrees lower than today's highs with the exception of the Rio Grande, which are anticipated to be warmer.
A mid/upper level high pressure system over S TX will continue to move west to northwest of the area tonight.
Otherwise, forcing from an inverted trough will likely keep shower activity going through the overnight hours tonight, before another round of storms gets going by mid-day Sunday. With that said, the inverted trough axis is expected to be over Yavapai County on Sunday, so if tomorrow morning's satellite imagery reveals a similar band of cloud cover, it may be a bit quieter there than currently anticipated.
1021 PM CDT Sat Jul 29 2017 The ridge of high pressure over Minnesota and Iowa will continue to influence the weather through Sunday.
Another pleasant day is on tap for Sunday as high pressure remains in control. Temperatures should be a few degrees warmer in most places than today.
722 PM EDT Sat Jul 29 2017 High pressure will maintain dry and seasonable weather through the start of the work week. Upper low continues to pivot off to the east with the bulk of the moisture now south of the forecast area. Building ridge of high pressure will follow in behind this, with dry conditions expected overnight. High pressure will remain in place through the start of the week.
Skies are variably cloudy with temps in the 80s and lower 90s, cooler over rainy areas. Upper level high pressure over the southern Plains will gradually shift westward into the southwest US early to mid week. A few strong storms with small hail and gusty winds are possible with the increasing instability, but shear looks to remain relatively weak, especially in the low to mid levels.
1104 PM CDT Sat Jul 29 2017 High pressure will stay in control over the region through Sunday afternoon.
1144 PM CDT Sat Jul 29 2017 A cold front will push south across the forecast area overnight and early Sunday.
Overall weather pattern through the period will feature a continuation of the upper level ridge across the western U. and troughing across the northeast/Ohio Valley. Mid level energy will move out of south central Canada and sweep southeast across the Great Lakes/Ohio Valley, reinforcing the upper trough by late in the week/weekend.
Benign weather conditions will persist through the weekend, as high pressure remains situated across the Upper Midwest.
The far eastern forecast area will remain on the fringe of the surface anticyclone which will support a light northerly gradient wind.
1231 AM EDT Sun Jul 30 2017 High pressure will maintain dry and seasonable weather through the start of the work week. Fair weather expected today as high pressure builds into the region. High pressure will remain in place through the start of the week.
/issued 341 PM CDT Sat Jul 29 2017/ (Tonight and Sunday) A weak cold front has move south of the Red River at 3 PM CDT, though winds had already turned light north in a prefrontal trough south along the I-20 corridor. Isolated thunderstorms are possible in the Big Country and Concho Valley as the weak cold front moves through overnight.
/issued 336 PM EDT Sat Jul 29 2017/ An approaching frontal boundary has helped push the influence of Atlantic high pressure to the east of South Florida.
A few sites have been allowed to mix a bit more down into the lower 60s. The upper-level pattern on Sunday will feature an unusually deep trough near the East Coast with an associated surface cold front in an east-west orientation across northern Gulf of Mexico.
Strong high pressure will persist over the western Great Basin through at least mid week.
547 PM MDT Sat Jul 29 2017 Noticeable spin seen on radar this afternoon in southwestern Colorado as a midlevel low pressure system treks across the state. This low, acting in tangent with monsoonal moisture streaming in from down south, has produced another day of scattered showers and thunderstorms.
Scattered showers were developing in western zones and over the higher terrain where mostly clear skies have allowed the surface to warm to convective temps. Most of the showers and storms will be anchored over the higher terrain but expect a few to make it into the lower elevations so included slight chance POPs over most of the lower elevations Sunday evening.