Aikyam-Lab/Synoptic-Bench huggingface dataset:
Some ifr and even lifr is possible as the lower layers become saturated with the passing wave.
/issued 344 PM CST Sat Jan 14 2017/ (Tonight and Tomorrow) A warm front along the Interstate 10 corridor this afternoon will lift to the north overnight and should be in the vicinity of Interstate 20 by sunrise tomorrow and over the northern Big Country by noon. An upper low over the central Baja this evening will move eastward overnight and should be moving over far West Texas by noon tomorrow. Highs tomorrow will range from the lower 60s over the Big Country to the upper 60s over the southern half of the forecast area. Following the exit of the upper level trough tomorrow night, a cutoff low will develop southwest of the area in western Mexico.
Building high pressure will bring mostly dry and cool weather through the weekend.
937 PM EST Sat Jan 14 2017 High pressure shifts east and weakens through today, allowing a weak cold front to move through the area early Sunday.
Lows tonight will be in the lower 50s inland and upper 50s near the coast.
946 PM EST Sat Jan 14 2017 a trough of low pressure over the Ohio valley will move off the Mid Atlantic Coast tonight. as high pressure centered over the Central Plains moves east.
An upper ridge and light winds will keep a cold dry air mass over Western Washington through Sunday.
A strong temperature gradient is across the mid state this afternoon thanks to the cold front that stalled just south of the area a few days ago, and warm air now forcing the boundary back to the north.
918 PM EST Sat Jan 14 2017 Wintry mix will end this evening followed by high pressure for Sunday. The lowest visibilities are over the higher elevations where they are actually in the cloud deck. Still remain concerned about freezing drizzle in the ridges, but drier air is slowly sinking to the south. Some icing may still be possible in a few spots where temperatures hover near freezing, but overall concerns for further impact is low. Ridge of high pressure will remain in control on sunday, with near average temperature expected under zonal flow. A deeper trough is progged to develop over the plains for the start of the new week.
650 PM EST Sat Jan 14 2017 High pressure shifts east and weakens through today, allowing a weak cold front to move through the area early Sunday.
435 PM MST Sat Jan 14 2017 A seasonal weekend in store for southeast WY and the western Nebraska Panhandle as we keep watch on an area of low pressure spinning across the Baja of California.
the lower and more sheltered valleys have seen persistent visibilities below one quarter of a mile. A seasonal weekend in store for southeast WY and the western Nebraska Panhandle as we keep watch on an area of low pressure spinning across the Baja of California.
544 PM EST Sat Jan 14 2017 A backdoor cold front will move just south of the area and become diffuse. An upper ridge over the southeastern part of the country will favor above normal temperatures through midweek.
Elsewhere, MVFR visibilities can be expected by morning, but somewhat drier air in the lower levels should prevent the fog from becoming widespread and dense as last night. Mid level ridging will continue the string of abnormally warm days for Sunday as highs reach into the mid and upper 70s. The exception will be over the far northwest where cooler air and cloud cover behind the boundary will keep readings in the mid 60s.
1024 PM EST Sat Jan 14 2017 Currently - A strong high pressure system over the southeastern United States is generating moderate to fresh northeast to east breezes across the Florida Keys and surrounding waters. The maritime trajectory that sweeps southwestward then west across the Keys is keeping dew point temperatures in the mid 60s with temperatures slowly descending through the lower 70s.
620 PM EST Sat Jan 14 2017 A ridge of high pressure will move off the New England coast overnight. An upper trough will move southeast from Canada overnight and will bring a slight chance of snow showers to the Adirondacks and Green Mountains after midnight and early Sunday morning.
554 PM CST Sat Jan 14 2017 IFR conditions will decrease to LIFR tonight with low ceilings, rain/freezing rain and fog. The freezing rain line will remain almost stationary overnight from near OKC to HBR and move increase start a northwestward movement Sunday morning. Freezing Rain Advisory until 6 AM CST Sunday for OKZ023>027- 033>035. Freezing Rain Advisory until midnight CST tonight for OKZ036>038.
Tight temperature gradient trying to press into the forecast area behind the cold front across the Great Valley. Advection of cooler air a bit weak though and the chilly airmass will have some difficulty making it across the plateau so current forecast appears on track.
608 PM EST Sat Jan 14 2017 a trough of low pressure over the Ohio valley will move off the Mid Atlantic Coast tonight. as high pressure centered over the Central Plains moves east.
Cold front was pushing back to the south during the evening, as models predicted. By this evening we were already back in the cooler air at Nashville, and the 8 pm temperature was back down to 52.
545 PM EST Sat Jan 14 2017 Wintry mix will end this evening followed by high pressure for Sunday. Some icing may still be possible in a few spots where temperatures hover near freezing, but overall concerns for further impact is low. Ridge of high pressure will remain in control on sunday, with near average temperature expected under zonal flow. A deeper trough is progged to develop over the plains for the start of the new week.
720 PM EST Sat Jan 14 2017 A new round of high pressure will build from the Plains into the Great Lakes tonight through Sunday.
854 PM EST Sat Jan 14 2017 High pressure will build over the area again through Sunday night.
546 PM MST Sat Jan 14 2017 A winter storm is still on track to impact the region beginning this evening with freezing rain expected to begin impacting the southern and southeastern reaches of the CWA around sunset. There has been a trend toward heavier sleet accumulations and less in the way of freezing rain and ice, mainly in the northwest portions of the CWA. Shower activity will pick up later this afternoon as the low moves east and then northeast into the region.
833 PM CST Sat Jan 14 2017 Large area of freezing rain continues to move across western and northern Oklahoma, where temperatures range from 30-32. This will certainly change early Sunday as an upper trough approaches and surface winds become northeast and east. /issued 554 PM CST Sat Jan 14 2017/ IFR conditions will decrease to LIFR tonight with low ceilings, rain/freezing rain and fog. The freezing rain line will remain almost stationary overnight from near OKC to HBR and move increase start a northwestward movement Sunday morning. Freezing Rain Advisory until 6 AM CST Sunday for OKZ023>027- 033>035. Freezing Rain Advisory until midnight CST tonight for OKZ036>038.
630 PM EST Sat Jan 14 2017 A ridge of high pressure will move off the New England coast overnight. An upper trough will move southeast from Canada overnight and will bring a slight chance of snow showers to the Adirondacks and Green Mountains after midnight and early Sunday morning.
919 PM EST Sat Jan 14 2017 A ridge of high pressure will move off the New England coast overnight. An upper trough will move southeast from Canada overnight and will bring a slight chance of snow showers to the Adirondacks and Green Mountains after midnight and early Sunday morning.
1115 AM EDT TUE JUL 19 2016 High pressure ridging into the forecast area from the Atlantic will give way to a developing pre-frontal trough today. The weakening cold front approaching from the north will be near the forecast area tonight. Observations show cumulus beginning to develop as temperatures push into the lower 90s. Used the higher maximum temperature guidance based on the recent bias. The models displayed surface ridging extending from the Atlantic into the Gulf of Mexico or southeast states through the medium- range period. A lee-side trough was depicted in the forecast area during much of the period. ALoft, ridging in the south-central part of the nation was shown extending eastward and toward the forecast area.
/Issued 325 AM CDT TUE JUL 19 2016/ Upper level analysis shows persistent upper ridge spinning over the Southern Plains. winds are generally 5-10kts from SSE with temperatures in the low to mid 70s. With upper ridge in place. models start sliding the high pressure westward which will help increase highs into more triple digit territory. some deamplification of the ridge is expected which will allow a few weak disturbances to move over the area.
1111 AM EDT TUE JUL 19 2016 Update High pressure will bring fair weather today and tonight. The high moves east on Wednesday with showers and thunderstorms moving in during the day.
607 AM CDT TUE JUL 19 2016 The primary weather concern this week continues to be the heat building into the region with a rather stout upper ridge taking control. With ridging aloft gripping the bulk of the forecast area, it'll be hard-pressed to get any precip for much of this week. That said, a large complex of thunderstorms currently tracking across central NE may very well clip northern MO as it rides along the ridge's periphery. The placement of the ridge's periphery is key in determining where storms will track.
So far the low clouds have not moved into Jackson County as of 3 AM. On Wednesday, inland temperatures are expected to rise 5 to 10 degrees as a ridge expands northward. The exception is the coast and the lower Umpqua River valley where low clouds will be persistent.
Will leave mention of isolated storms in most locations for the next day or so, until the upper ridge really builds in on Thu.
722 AM EDT TUE JUL 19 2016 High pressure builds behind a cold front today through Wednesday.
931 AM EDT TUE JUL 19 2016 High pressure will move into the area today, bringing drier conditions, with temperatures near normal.
920 AM MDT TUE JUL 19 2016 small update to add low pops for diurnal convection, mainly off the high terrain. Water vapor shows upper ridge amplifying through the nrn plains. low is centered over sern MT with trof extending sewd into scntrl SD. thermal ridge will build into our wrn zones with temps rising well into the 90s through the cwfa. Thermal ridge will be centered over wrn SD and should result in the hottest day of the week.
In the low levels of the atmosphere, an Atlantic ridge of high pressure will extend across north Florida this afternoon. In the mid to upper levels of the atmosphere, an area of high pressure will be centered over the south central United States today.
Subsidence from the building ridge continues to become more apparent. Since the upper high is centered to our north winds are easterly through the profile becoming more northeast aloft. /issued 345 AM CDT TUE JUL 19 2016/ Main focus this week will be impacts from an upper level ridge on the area in terms of temps and convection. Wednesday will be similar to today albeit possibly slightly warmer.
More VFR weather today with a possibility of convection this afternoon with a weak upper trough moving across the Great Valley.
While this will likely cut down on some of the solar insolation later this morning and this evening, forecast soundings are showing mixing up to 750mb which favors the warmer GFS MOS highs in the mid 90s in most areas. Do expect another day with isolated thunderstorms as the aforementioned cold front currently just north of the area will move south, becoming oriented northwest-southeast near the Mississippi River by early afternoon according to the latest runs of the RAP.
Convection moving out of eastern MT and into western ND is associated with a subtle upper-level impulse that will cross the state today, albeit atop the influence of an intense central US 500 MB ridge. Further east temperatures will be slightly cooler with readings in the 90s, however these very warm temperatures will combine with high humidity to produce heat indices across central North Dakota around 100 degrees.
1219 PM EDT TUE JUL 19 2016 Areawide VFR through the period as high pressure transiting the region causes winds to continually veer from westerly early this morning to NE around 10 kts this aftn to light southerly by Wednesday morning.
958 AM MDT TUE JUL 19 2016 Another hot day is in store for the region as high pressure dominates. The short term will be dominated by the central US ridge. The ridge will dominate most of the the forecast.
Elsewhere, a northern stream trough will amplify over the Mid-Atlantic today, while a +PV anomaly rotates around the eastern periphery of the central CONUS ridge. At the surface, already established lee troughing will be further strengthened by the synoptic scale trough and smaller disturbance spreading southeast. Then, scattered to numerous storms will develop along the developing trough from Columbus through Dothan and Destin. Well upstream, storms should be initiating along the lee trough/merging cold front.
727 AM CDT TUE JUL 19 2016 /12Z TAFs/ It still appears the proximity of the mid-level ridge should limit shower/thunderstorm development. /ISSUED 303 AM CDT TUE JUL 19 2016/ A broad ridge of high pressure was anchored from the central/ southern High Plains eastward all the way into the Deep South early this morning. Mid level heights near the center of the upper high will be pushing 600 decameters, as the high center remains anchored over Kansas/Oklahoma the remainder of the week. Water vapor satellite imagery does depict some moisture trapped within the ridge across the southeast half of the CWA today and we tend to call these types of upper highs a 'dirty ridge'.
718 AM EDT TUE JUL 19 2016 High pressure will build in from the west today and will settle offshore south of New England on Wednesday.
An upper level trough along the Pacific Northwest coast will leave the Great Basin under a southwest flow through much of the week, with moisture remaining over southern and eastern Utah. Water vapor satellite imagery this morning shows a broad trough over the Pacific NW while anticyclonic flow lies over the southwestern US, advecting deeper moisture into AZ. Area radars show a few light returns over the higher elevations of southern UT, but no lightning activity has been detected thus far. The central and eastern parts of UT should be cooler today with mostly cloudy skies this afternoon. Have maintained the highest POPs east of I-15 while the west largely remains dry through the forecast period.
1047 AM MDT TUE JUL 19 2016 H5 00Z hand analysis shows high pressure centered over the lower Mississippi Valley and an anomalously strong low off the left- central coastline of NOAM. Showers and thunderstorms continue to develop and track across the high plateaus and central mountains in the pre-dawn hours.
1147 AM CDT TUE JUL 19 2016 Temps warming rapidly this morning with many in the lower 90s. High pressure will keep today mostly clear with only a few passing low level clouds.
A broad upper low over the Pacific Northwest will maintain unseasonably low inland temperatures and persistent coastal cloudiness over the next few days. Then strong high pressure will bring a warming trend for the late half of the week with weekend temperatures approaching the triple digits across the interior. The upper trough that has enhanced the marine layer and brought cool temperatures to the interior will persist for a few more days. However late in the week the trough will exit to the east allowing a major shift in the pattern to occur.
Additionally, the upper ridge is centered just to our NW and with 597dm 500mb heights over the area, that's in the 99th percentile for mid level heights. This activity looks to be tied to a subtle 850mb convergence axis that is in a theta e ridge.
For today, upper level warm ridging remains dominant across the Central Plains with general subsidence and no chances for any storms into tonight for southwest or south central Kansas. A surface lee trough remains with a typical diurnal wind response of light south winds increasing to 15 to 22 mph by afternoon.
715 AM EDT TUE JUL 19 2016 Aviation High pressure will bring fair weather today and tonight. The high moves east on Wednesday with showers and thunderstorms moving in during the day.
High pressure at the surface firmly in control this morning. Large area of high pressure remains centered over the heart of the US early this morning. Much warmer and more humid conditions over the next few days as a strong sprawling upper level ridge covering the southern half of the country expands northward into the western Great Lakes and holds through at least the end of the week. At the same time, there will be small chances for cooling showers and thunderstorms as upper level disturbances top the ridge and graze the region.
1125 AM EDT TUE JUL 19 2016 Building high pressure will bring dry weather much of the week. Building high pressure is expected to result in dry weather, decreasing dew points and mainly clear skies through tonight. High pressure and dry weather will continue through at least Wednesday night. 500 mb heights will be on the rise as the building central CONUS ridge pushes the upper trough off to the east.
Upper level high pressure builds over central U. Weak disturbances could drop southeast around ridge. Expect mixing to raise the low ceilings along the western slopes and mix out the ceilings to scattered clouds late this afternoon. With cooler minimum temperatures tonight. forming first in the southern coal field valleys and cooler mountain valleys. High pressure. with warmer air aloft keeping atmosphere capped. and upper ridging builds eastward into the region.
An upper level trough along the Pacific Northwest coast will leave the Great Basin under a southwest flow through much of the week, with moisture remaining over southern and eastern Utah. Water vapor satellite imagery this morning shows a broad trough over the Pacific NW while anticyclonic flow lies over the southwestern US, advecting deeper moisture into AZ. Area radars show a few light returns over the higher elevations of southern UT, but no lightning activity has been detected thus far. Currently, SLC is running 4 degrees warmer than this time yesterday, where we topped out at 98. The central and eastern parts of UT should be cooler today with mostly cloudy skies this afternoon. Have maintained the highest POPs east of I-15 while the west largely remains dry through the forecast period.
945 AM PDT TUE JUL 19 2016 Below average temperatures continue into mid-week as a low pressure system moves across the Pacific Northwest. Warming will return by the end of the week as high pressure expands into the region. A slightly warmer start to the day today will continue as onshore flow weakens a bit. Highs this afternoon are expected to also be a few degrees warmer than yesterday across the area, though it is still quite mild for mid July.
1056 AM EDT Tue Jul 19 2016 Noticeably cooler and drier conditions are in store today in the wake of a cold front.
Second, weak impulses of 500 mb troughiness will approach from the east and move through on the southern periphery of 500 mb high pressure centered roughly over Oklahoma.
Broad upper ridging continues over the Central U. as Great Lakes troughing moves eastward today then builds down the eastern seaboard starting tomorrow. At the surface, Western Atlantic Bermuda high pressure ridge axis stretches into the Deep South with slightly tight summertime gradient over the state today and expect a similar precip set up as yesterday with moderate easterly flow through the entire column.
A dry southwest flow aloft will persist for continued mostly clear skies, near normal temperatures, and afternoon breezes mainly over the higher terrain.
1135 AM EDT TUE JUL 19 2016 High pressure will build in from the west today and will settle offshore south of New England on Wednesday.
637 AM CDT TUE JUL 19 2016 336 AM CDT Early this morning skies remain mostly clear, as high pressure was overhead and providing light to calm winds.
Drier air will come in Wednesday afternoon as the upper ridge tries to move a bit farther south. Should be a bit cooler today with the clouds and convection, but still enough sunshine to bring temperatures at least closer to normal values. Maybe a tad warmer on Wednesday with the drier air coming in and thus less clouds, but temperatures still only about a degree above normal for this time of year.
Initially upper ridging out through the central and southern plains will build northward into the northern plains today and remain insitu while building over a large part of the U.
A large trough sits over the coastline of the Pacific Northwest and goes as far inland as northern Idaho.
941 AM EDT TUE JUL 19 2016 Deep easterly flow continues from the surface through 40,000 feet as the area remains south of a deep layer ridge. A pocket of relatively moist air rounding the base of the low level ridge has increased available precipitable moisture to around 2" as sampled on this morning's sounding launched at Cape Canaveral.
725 AM EDT Tue Jul 19 2016 Noticeably cooler and drier conditions are in store today in the wake of a cold front.
Chattanooga Airport, TN 95 73 96 71 / 40 30 0 0 Knoxville McGhee Tyson Airport, TN 93 71 94 69 / 30 20 0 0 Oak Ridge, TN 94 71 95 69 / 30 20 0 0 Tri Cities Airport, TN 91 65 92 63 / 30 20 0 0.
A broad H5 mid level ridge is in place across much of the central Plains eastward to the lower Mississippi River Valley this morning. By Wednesday, the ridge consolidates and strengthens across OK and this will damper any possible easterly wave.
848 AM EDT TUE JUL 19 2016 Building high pressure will bring dry weather much of the week. Building high pressure is expected to result in dry weather, decreasing dew points and mainly clear skies through tonight. High pressure and dry weather will continue through at least Wednesday night. 500 mb heights will be on the rise as the building central CONUS ridge pushes the upper trough off to the east.
1049 AM EDT TUE JUL 19 2016 High pressure over the Great Lakes will build southeast across Pennsylvania by Wednesday, then off the Mid Atlantic coast by late week.
943 AM EDT TUE JUL 19 2016 High pressure builds behind a cold front today through Wednesday.
1047 AM EDT TUE JUL 19 2016 Cooler Canadian air will blow in via northwesterly winds today. Dry high pressure will build over the region tonight through Wednesday.
Satellite imagery shows an upper trof axis shifting southward into Kentucky early this morning. The trof axis is along the leading edge of a short wave trof digging southward along the Mid-Atlantic States. This will cause the upper ridge to retrograde a little westward today and provide Alabama with one more day of active convection. The east coast trof should provide some upward motion across the area today, and expect fairly good coverage of rain this afternoon.
403 AM CST Sat Nov 26 2016 Last night's cold front has moved well into the Gulf of Mexico with high pressure over the middle Mississippi River Valley.
Through this afternoon will see riding continue, as the main ridge axis continues to move east. Late tonight and into tomorrow, a trough will begin to move in. Amounts will light, a couple of inches in the high terrain, with a dusting to an inch in the foothills. Sunday night as the low starts to deepen, winds will increase out of the northwest across the area.
Temperatures are below freezing at KFYV with light ice accretion reported. /Issued 336 AM CST Sat Nov 26 2016/ Areas of freezing fog are occurring in parts of northwest Arkansas and eastern Oklahoma. especially bridges over water. A Freezing Fog advisory is up for northwest Arkansas and east-central and northeast Oklahoma. The system will track into the northern Plains and drive a cold front across the region. Initially the low-level moisture will be limited and come up to our west.