Aikyam-Lab/Synoptic-Bench huggingface dataset:
A cold front has moved through much of the forecast area and was located to the South of a KTVR to near KIER and KOCH line. /issued 248 PM CST Thu Feb 1 2018/ Cold front from near Mineola to El Dorado continues to make its way swd this aftn. Strong nly winds in the wake of the front tonight /Lake Wind Advisory remains in effect from 4 PM to midnight for portions of the region/ will help usher in a much cooler airmass that will keep us from getting out of the 40s and 50s for daytime highs Friday.
earlier change of rain to snow over the ridges should result in a higher snow accumulation, so the Winter Weather Advisory has been maintained for 2-4 inches of snow. NW flow, an approaching upper trough, and lake/terrain enhancement should result in additional snow showers overnight, as wrn and central portions of Lake Erie are ice free. The upper trough, combined with lake and terrain enhancement, should maintain sct-nmrs snow showers through part of Friday.
905 PM EST Thu Feb 1 2018 Latest observations indicating that cold front has now shifted east toward the TN-NC border with the cold air pushing into the area rather quickly. However, either way, snow covered or ice covered roadways are going to lead to very hazardous road conditions overnight and into tomorrow morning as temperatures reach into the lower to middle 20s across most of the area and down into the teens across SW Virginia. Chattanooga Airport, TN 27 40 22 46 / 90 0 10 10 Knoxville McGhee Tyson Airport, TN 25 34 16 43 / 100 0 10 10 Oak Ridge, TN 24 34 16 44 / 100 10 10 10 Tri Cities Airport, TN 23 29 13 42 / 100 10 10 10 TN.
The persistent pattern of the ridge centered off the west coast with a fast northwest flow into the ern Great Basin continues this evening. The low amplitude short wave that passed this morning continues sliding into the plains while a weak warm front in its wake is crossing nrn UT this eve and bringing lower clouds to much of the wrn CWA. These will tend to dissipate and lift north overnight as the warm front passes and the small chances of light precip for the mtns will also retreat north and end overnight. Temps will stay on the mild side and any afternoon clearing in these areas will send maxes to even warmer levels. Amplification of the ern Pac ridge is expected to allow another slightly better defined wave to drop more directly thru at least the nrn CWA next Mon.
922 PM EST Thu Feb 1 2018 High pressure ridge will sink south of the region Tonight, as a cold front moves into Southeast Georgia toward dawn. A cold front will move Southeast across the region during the day on Friday.
646 PM EST Thu Feb 1 2018 A cold front will cross southeast through the Ohio Valley this evening. High pressure will build in its wake for Friday, settling southeast of the are overnight.
Some of the tropical moisture from Franklin will reach the lower TX coast Wed afternoon.
Prevailing VFR tonight into tomorrow under high pressure. Relatively light winds and waves are expected through Wednesday with high pressure in control. High pressure centered to our south will provide another pleasant night across southern Wisconsin. Tomorrow should be a near carbon copy of today, as high pressure to our south remains in control. Prevailing VFR tonight into tomorrow under high pressure. High pressure centered to the southeast of Wisconsin will keep very pleasant weather in place tonight and Wednesday.
Relatively light winds and waves are expected through Wednesday with high pressure in control. High pressure centered to our south will provide another pleasant night across southern Wisconsin. Tomorrow should be a near carbon copy of today, as high pressure to our south remains in control. Prevailing VFR tonight into tomorrow under high pressure. High pressure centered to the southeast of Wisconsin will keep very pleasant weather in place tonight and Wednesday.
High pressure over the Upper Midwest brought clear skies and comfortable temps in the upper 70s to lower 80s this afternoon. Light south winds should hold temps a few degrees warmer than lows were early this morning (Tuesday) when we were in the upper 40s to mid 50s.
Initially northeasterly winds late this afternoon will gradually veer overnight with the passage of the high pressure center, eventually becoming southeasterly by tomorrow morning. With little air mass exchange and limited in-place air mass modification, tonight's lows should be similar to last night's lows and tomorrow's highs should be similar to or perhaps a shade warmer than today's highs. Kanofsky A mid to upper level longwave trough over the eastern part of North America will drive west to northwesterly upper flow over the area through next Tuesday.
746 PM EDT Tue Aug 8 2017 High pressure centered over Ohio will keep dry weather across the region tonight and Wednesday.
620 PM CDT Tue Aug 8 2017 High pressure centered to our south will provide another pleasant night across southern Wisconsin. Tomorrow should be a near carbon copy of today, as high pressure to our south remains in control. Prevailing VFR tonight into tomorrow under high pressure. High pressure centered to the southeast of Wisconsin will keep very pleasant weather in place tonight and Wednesday.
643 PM MDT Tue Aug 8 2017 No major changes in the near-time expected as the 500mb height pattern keeps high pressure centered south of the Four Corners over the next couple of days.
However as the short wave trough to the northwest continues to approach expect better dynamics and VM overnight that will support scattered thunderstorms tonight. This favors slightly below normal temperatures in the 70s to the lower 80s.
1145 PM CDT Tue Aug 8 2017 High pressure extended from eastern Nebraska into the upper Ohio Valley at 19Z with a small area of isolated showers located near the southeast Nebraska Kansas border.
911 PM CDT Tue Aug 8 2017 Quite a difference in air masses across the Deep South this evening as high pressure to the north wants to promote a northerly, drier flow and a stalled front is maintaining a very moist, humid air mass in Central Alabama. Winds aloft across the local area will back to the west-southwest once again tomorrow, as the western portion of the subtropical ridge strengthens and expands east-northeastward. and a northern stream trough digs southeastward into the Dakotas and Minnesota. At the surface, a warm front will continue to advance northward through the TN Valley as low pressure organizes over the northern Plains and the ridge to our northeast drifts eastward off the mid-Atlantic coast. With low-level ascent expected to be maximized along and north of the warm front.
Rather large and broad mid/upper level trough in place across North America with a sharp ridge aligned along the Pacific Coast. At the surface, high pressure transits the Ohio Valley from west to east through the period. A frontal boundary draped across the deep south morphs into an inverted trough and shifts northward through the Commonwealth Wednesday. COOP MOS is advertising mid 50s in our cooler valleys tonight.
957 PM EDT Tue Aug 8 2017 High pressure centered over Ohio will keep dry weather across the region tonight and Wednesday.
726 PM EDT Tue Aug 8 2017 High pressure will build into the area through Wednesday.
Overall weather pattern shows a broad frontal boundary to our south with weak high pressure building in.
Overall weather pattern shows a broad frontal boundary to our south with weak high pressure building in. Chattanooga Airport, TN 70 83 71 84 / 20 50 50 60 Knoxville McGhee Tyson Airport, TN 66 84 69 82 / 10 30 40 60 Oak Ridge, TN 66 85 70 82 / 10 30 40 60 Tri Cities Airport, TN 60 83 65 80 / 10 20 30 60.
901 PM MDT Tue Aug 8 2017 Cold front has worked through all but extreme eastern portions of SE MT this evening. At 19Z, the cold front was located from a KHLN to KLWT to KGGW line moving slowly S. Otherwise, models continued to hit the high terrain and areas downstream with thunderstorms this evening so kept PoPs over these areas. Expect showers to linger over and near the high terrain overnight as the low-level flow turns NE. A cooler airmass combined with mixing to 750 mb will result in highs in the 70s to around 80.
858 PM CDT Tue Aug 8 2017 Sufficient warm advection ahead of the cold frontal boundary across northwest North Dakota seems to be supporting a weak MCS across Central South Dakota that has expanded a large stratiform rain region across south central North dakota this evening. However as the short wave trough to the northwest continues to approach expect better dynamics and VM overnight that will support scattered thunderstorms tonight. This favors slightly below normal temperatures in the 70s to the lower 80s.
Quiet 24 hours ahead with high pressure over the Upper Midwest moving east to the Ohio Valley region.
1220 AM EDT Wed Aug 9 2017 High pressure will build in briefly tonight. A cold front will move into the region tomorrow before it stalls out and weakens. A cold front is quickly moving towards the western border with clouds increasing towards dawn and spreading southward through the day.
808 PM MDT Tue Aug 8 2017 Sct showers and a few storms continue over the far nern plains and across the higher terrain. Some of the shower activity over the higher terrain may affect portions of the front range the next few hours especially from Denver southward. Broad upper trough over the Midwest and eastern states with a low amplitude upper ridge over the desert southwest has west- northwesterly flow aloft over the state. Expect warmer temperatures but less PW values, especially over the plains. The high pressure ridge now off the Pacific Northwest Coast will gradually move into the Great Basin and move just West of Colorado during the weekend, but there will still be ample moisture for scattered afternoon and evening thunderstorms each day.
High pressure over the upper midwest is the dominating feature on today's weather map. Temperatures are on the cool side for early August and range from the upper 70s Plateau to the lower to mid 80s elsewhere. However, the aforementioned boundary will work back to the north as a warm front and will move across the mid state late Wed nt. For the near term temps, with a general broad trough over the eastern U. In the ext fcst, the boundary to our northwest will stall but will weaken as the trough remains just to our northwest.
The low-level ridge axis more or less across the central peninsula this evening. Ridge axis wanders back north of the area and will produce a more east-southeast low level flow across the region, with drier mid level air working in within the onshore flow. Highs will continue to range from the low 90s along the coast to low-mid 90s interior. LLVL ridge axis lifts back north again on Wed with mainly ESE/SE flow across ECFL. Ridge axis lifts back north of the waters through this time.
/issued 209 PM CDT Tue Aug 8 2017/ The area is under the edge of a weak upper ridge over Arizona and New Mexico with west to northwest flow aloft. Chances of rain decrease tonight and will mainly be present south of I-10 and across the higher terrain tomorrow. Temperatures increase tomorrow closer to normal values as the upper ridge becomes more centered over the region and winds return to the south.
622 PM CDT Tue Aug 8 2017 No weather concerns today as high pressure centered over the mid-Mississippi valley continues our run of pleasant summer days. However as this high continues to slide off to the east, we'll see a return to unsettled weather. This afternoon a diffuse cold front is stretched along the international border between two areas of low pressure, one over the Canadian Prairies & the other over Hudson Bay.
842 PM CDT Tue Aug 8 2017 High pressure centered over central Illinois early this evening will drift slowly off to our east by Wednesday morning bringing a continuation of the pleasant weather conditions to the region. Another nice day shaping up on Wednesday as the fair weather system continues to move away from our area allowing winds to turn more into a southeasterly direction bringing afternoon highs into the lower 80s over most of our area. High pressure will slowly shift east of Illinois through tomorrow, but it will remain our primary influence on the sensible weather. Highs tomorrow will rebound nicely into the lower 80s, as fair weather cumulus develop from late morning through the afternoon.
616 PM CDT Tue Aug 8 2017 High pressure will slowly shift east of Illinois through tomorrow, but it will remain our primary influence on the sensible weather. Highs tomorrow will rebound nicely into the lower 80s, as fair weather cumulus develop from late morning through the afternoon.
An associated cold front leads the trough, shifting into eastern Wisconsin by Thu evening. Nose of the low level moisture transport pushes into central MN Wed evening, working northeast, ahead of the trough and along the front. The GFS works on some ridge building for the area while the EC keeps the region in northwest/north flow a loft, amplifying the ridge over the central part of the U. Obvious impacts to temps (warmer in the GFS), and potential for showers/storms by mid week (GFS again). VFR conditions expected into Wednesday afternoon as high pressure slowly drifts east of the area. Winds overnight will shift southerly as high pressure departs, with speeds a little too strong to support any fog and/or stratus potential for the LSE terminal.
Quiet weather conditions through mid week as high pressure continues to build into the Ohio Valley out of the Central Plains while a stalled frontal boundary remains draped across the UP. The center of the high will track into Ohio early Wednesday allowing for a more southwesterly component to the wind field, and a slight increase in moisture with dewpoints rising to near 60 degrees in some spots. Models do support a strong mid level vort min crossing southern MI through the day which should help the ridge keep the weather quiet.
Upper trough continues across the eastern CONUS with relatively weak northwest flow across the Great Plains. Upper ridging sits across the western CONUS with the main axis just offshore the Pac coast. and on the surface a trough is now pushing through northeast WY. KUDX radar shows showers and thunderstorms developing within the deep southerly flow just ahead of the trough. the focus of convection will be the trough as it continues to slowly push eastward. Short term guidance shows convection continuing east of the trough. and eventually a line of storms developing along the trough as it pushes eastward late this afternoon into the evening.
Model time sections show abundant moisture in the low/mid levels along with pw values around or exceeding 2. Expect overnight lows to be close to previous nights with most areas just falling into the lower/middle 70s, this is very close to current dewpoint temperatures across the area. Diurnally induced showers and thunderstorms will then by likely during the afternoon, aided by the weak waves moving along the front as it begins to lift back to the north as a warm front.
1059 PM CDT Tue Aug 8 2017 No weather concerns today as high pressure centered over the mid-Mississippi valley continues our run of pleasant summer days. However as this high continues to slide off to the east, we'll see a return to unsettled weather. This afternoon a diffuse cold front is stretched along the international border between two areas of low pressure, one over the Canadian Prairies & the other over Hudson Bay.
913 PM EDT Tue Aug 8 2017 High pressure will build in briefly tonight. A cold front will move into the region tomorrow before it stalls out and weakens. Weak high pressure will crest across the region late this evening as a cold front in western Quebec moves closer to the area by morning.
An upper level low off the California coast continues to send short waves around it and into the forecast area. The low clouds and fog will burn back to the coast by late Wednesday morning.
630 PM CDT Tue Aug 8 2017 100 PM CDT High pressure centered over west central Illinois this afternoon will be in control, continuing the quiet weather conditions as the high shifts slowly east on Wednesday. A lake breeze will keep shore areas slightly cooler once again. Castro 218 PM CDT Broad upper-level troughing is expected to dominate across much of the Great Lakes Region through the period.
725 PM EDT Tue Aug 8 2017 Rather large and broad mid/upper level trough in place across North America with a sharp ridge aligned along the Pacific Coast. At the surface, high pressure transits the Ohio Valley from west to east through the period. A frontal boundary draped across the deep south morphs into an inverted trough and shifts northward through the Commonwealth Wednesday. COOP MOS is advertising mid 50s in our cooler valleys tonight.
927 PM EDT Tue Aug 8 2017 Broad high pressure, extending from the Midwest U.
1207 AM EDT Wed Aug 9 2017 VFR conditions will persist for the rest of the night and through the upcoming day thanks to high pressure building from the mid Mississippi Valley across the southern Great Lakes. Quiet weather conditions through mid week as high pressure continues to build into the Ohio Valley out of the Central Plains while a stalled frontal boundary remains draped across the UP. The center of the high will track into Ohio early Wednesday allowing for a more southwesterly component to the wind field, and a slight increase in moisture with dewpoints rising to near 60 degrees in some spots. Models do support a strong mid level vort min crossing southern MI through the day which should help the ridge keep the weather quiet.
In the upper levels, a trough to the north and west of the forecast area was helping to generate some weak Q-G forcing across our forecast area.
/issued 349 PM CDT Tue Aug 8 2017/ Isolated showers this afternoon will dissipate by early evening along with most of the low cloud cover.
An associated cold front leads the trough, shifting into eastern Wisconsin by Thu evening. Nose of the low level moisture transport pushes into central MN Wed evening, working northeast, ahead of the trough and along the front. The GFS works on some ridge building for the area while the EC keeps the region in northwest/north flow a loft, amplifying the ridge over the central part of the U. Obvious impacts to temps (warmer in the GFS), and potential for showers/storms by mid week (GFS again). High clouds continue to work across the area, with VFR conditions expected to prevail through the day as high pressure departs off to the east.
Temperatures will warm slightly across the interior as high pressure strengthens over the Desert Southwest through late week. A rex block currently resides over Northern California and the Pacific Northwest as an upper level closed low is positioned just to its west. The marine layer will likely compress a few hundred feet tonight and slightly warmer temperatures are forecast farther inland as the aforementioned ridge backbuilds/strengthens into the southern half of California.
629 PM CDT Tue Aug 8 2017 High pressure extended from eastern Nebraska into the upper Ohio Valley at 19Z with a small area of isolated showers located near the southeast Nebraska Kansas border.
1014 PM EDT Tue Aug 8 2017 Skies are mostly clear with temperatures averaging in the lower to mid 80s along the Florida Keys. Surface wise, a broad area of high pressure is spread across the Sunshine State, with mostly east winds of near 15 knots except slightly higher south of the reef tract. With our region on southern half of the deep layered western Atlantic ridge, scant moisture above 850 mb and a decelerating low level flow will limit shower activity to the isolated category. A steady, albeit light to gentle east wind will keep low temperatures in the lower 80s.
Arctic high pressure is centered over northwest South Dakota, which is leaving the far east with just enough of a gradient to keep us mixed, and northwest low level flow over the warmer lakes is also resulting in flurries and stratus, mainly near the Pierre to Chamberlain areas. With a ridge axis overhead, we can anticipate another night with favorable radiational conditions and readings again falling into the teens to 20s below. Not much moisture given the airmass overhead, however did upgrade the low pops/flurries mention to more 20-40% pops but with no accumulation.
Upper ridge currently over the west coast will slowly migrate eastward and reach the Rockies by the end of the week.
225 PM CST Mon Jan 1 2018 Broad upper trough over the eastern half of the country with a ridge over the west.
A little warmer across southeast OK with lower to mid 20s expected in those areas.
The dry air is associated with a 1050 MB Arctic high pressure system centered over Omaha.
The dry air is associated with a 1050 MB Arctic high pressure system centered over Omaha. Otherwise, the next 24 hours will bring VFR with clear skies as cold, dry high pressure controls the wx.
Added several degrees to the inherited max T grids for Tuesday, toward the warmer 12z MAV guidance. With the continued exceptionally dry ground, confident at least the western zones will climb several degrees above freezing Tuesday afternoon.
Half km winds off the NAM and ECAM support the potential of blowing snow tonight through afternoon hours over the higher terrain areas of the Sisseton hills.
1139 AM CST Mon Jan 1 2018 High pressure will continue over the area through the period. Strong northerly winds will gradually decrease through the afternoon and evening hours as high pressure continues settling in across the area.
Dry conditions with warmer than normal daytime temperatures will continue into the upcoming weekend. Afternoon high temperatures are expected to be down a few degrees on Tuesday as the ridge becomes amplified along the west coast and increased/thicker high cloud cover moves across the forecast area.
A weak upper level trough will rapidly dive south on Tuesday, but surface moisture is lacking for this disturbance.
High pressure will slide southwest of the state tonight keeping enough of a pressure gradient for 5 to 10 knot winds. A mid level trough drops through Tuesday night with an upper level jet off to the west.
1225 PM EST Mon Jan 1 2018 Aviation A strong area of high pressure in the Central Plains will build east today and up the Ohio Valley on Tuesday.
135 PM MST Mon Jan 1 2018 High pressure will prevail across the region through the week as temperatures continue to run above normal with highs mostly in the 70s. There continues to be very strong consensus between the global models suites (and their respective emsemble members) that strong long-wave ridging aloft will remain over the region through all of the upcoming workweek as a highly-amplified long-wave pattern remains locked over North America, with very deep trofing entrenched from the Rockies eastward.
The remainder of the forecast area will have partly cloudy skies and warmer temperatures.
Strong high pressure at the surface over the Plains will continue to build south into the forecast area through the period. These northeast winds are also bringing in a very dry air mass in the low levels that will keep conditions at VFR levels, as only high level clouds coming around the base of an upper level trough will move over head. Continued cold air advection through the day will allow afternoon highs to top out only in the low to mid 30's. Over the coastal waters the gale warning will be reduced to a small craft advisory across the nearshore waters at 10 AM and the low water advisory will expire at the same time.
300 PM CST Mon Jan 1 2018 Quiet forecast over the next several days as the upper trough and surface ridging gradually loosen their icy grip on the forecast area. Slightly warmer temperatures are expected Tuesday as weak southerly flow and gradually increasing temperatures aloft help highs stretch to the upper teens to low 20s, and these cold-but- not-as-awful temperatures will continue through the rest of the work week, then warmer conditions are possible this weekend as the upper pattern shifts to the east and thermal ridging builds in from the west.