Aikyam-Lab/Synoptic-Bench huggingface dataset:
Temperatures will be around 5 degrees below normal today, with afternoon highs in the lower 70s. On Wednesday, much of the area will see temperatures right at seasonal normals for this time of year, with highs in the low to mid 70s, under mostly sunny skies.
A ridge of high pressure will be centered directly over the forecast area today. The ridge will begin to slowly breakdown tonight as the pattern transitions to more of a westerly flow. especially in the lower valleys and basins. Increasing clouds Wednesday with approaching cold front.
940 AM EDT Tue Oct 24 2017 It was a cooler start to the day with locations 10-20 degrees cooler around sunrise compared to yesterday morning. With the initial cold front having pushed through yesterday, the area will remain dry today with high temperatures in the 70s. A drier and cooler airmass will prevail across the region today behind a cold front. Skies will be clear with afternoon high temperatures ranging from the lower 70s across the northwest to the upper 70s across the southeast big bend.
A cold front pushed through northern and central New Mexico overnight and will provide cooler conditions today.
Hickford An upper level ridge positioned over the western U. will extend into the CWA today bringing with it dry weather conditions and warmer temperatures. The ridge axis will reach the forecast area by Wednesday which is when temperatures are expected to peak well into the 60s north of the Missouri River with some 70s to the south.
As of 3AM this morning, the Great Lakes low pressure system was lagging in deepening as much as we had anticipated at this time, and peak winds overnight have remained around 25-35 MPH. The low is quickly deepening though, and should continue on a northwestern path over the next few hours.
Could see some of the highest gusts early in the day, before the gradient begins to relax for the afternoon hours. This robust north flow will lead to cooler temps today, given the colder start to the day. This will lead to good downslope flow and a warmer day for Wed with max temps closer to normal. C drops south by Fri and Fri night, with freezing temps expected to settle over central KS by thu night and areawide by Fri night/early Sat morning.
Significant winds and dry conditions ahead of a cold front passage Wednesday afternoon have resulted in the issuance of a Red Flag Warning for portions of Central Montana. An upper level ridge of high pressure will be over the region today through Wednesday afternoon resulting in mostly dry but windy conditions. A fast moving cold front moves southward through the region Wednesday night, producing a few rain or snow showers over the Rocky Mountain Front and across Central and Southwest MT. However, stronger winds and lower humidity is expected on Wednesday ahead of a cold front.
High pressure was anchored over southern California with a high amplitude ridge extending north into the Northwest Territories of Canada. East of this feature, a closed low was located over northern portions of Hudson Bay with a secondary low noted over Iowa. A deep trough of low pressure extended from Hudson Bay southward to northern portions of the Gulf of Mexico. Downstream of this feature, a ridge of high pressure extended from the western Atlantic north into southern Greenland. Winds will diminish slightly in the west late this afternoon with the arrival of high pressure, however, gusty winds will continue in the eastern and northeastern forecast area as a decent pressure gradient will persist into the evening hours. Lows tonight will range from the freezing mark in the Platte River Valley and northwestern sandhills, to lower 40s in the northeastern forecast area.
Temperatures are in the lower 80s. A cold front will move to the east across the southeastern Gulf of Mexico this afternoon. Despite plenty of atmospheric moisture and instability in place for convection, rain chances today will be kept near the lower end of numerical model output statistics due to lack of an apparent convective trigger.
643 AM CDT Tue Oct 24 2017 Northerly flow aloft, along with unidirectional winds in the lower levels will produce breezy conditions across the region today. The strongest winds will occur east of the I-29 corridor, closer to the low pressure system. This system will draw warmer air into the area with high temperatures likely reaching the 60s and low 70s.
This has brought ideal downslope conditions to portion of the East Bay shoreline and even around Half Moon Bay with middle of the night temps hovering in the low 80s. There's wild variation in temperatures with some of the cooler wind protected valleys currently in the 40s while 50s and 60s are most common with plenty of the 70s and even the aforementioned 80s at 3 am! So the stage is set for a rapid warm up once the sun comes up with gusty easterly winds through about 17z. The gfs keeps the ridge in place over CA through at least the end of the work week so high confidence for continued above normal temperatures and dry weather with high pressure overhead.
524 AM MDT Tue Oct 24 2017 Deep cyclonic flow sits across the western half of the CONUS while strong upper ridging has built into the western half. A quiet day is expected today with slightly warmer temps than yesterday. Warm air advection will push in from the west tonight into Wednesday with much warmer temps expected. possibly just reaching into the low 80s.
For this afternoon, an upper level trough axis will dig across the region, bringing increasing clouds and scattered light showers.
757 AM EDT Tue Oct 24 2017 Low pressure will maintain shower chances and cool temperatures through mid week.
/issued 309 AM CDT Tue Oct 24 2017/ Breezy northerly winds will affect the area again today as upper trough deepens and moves across the eastern U. Cooler temperatures also expected today, with highs in the 60s across the area which would be about 10-15 degrees cooler than yesterday.
The highs this afternoon will be mainly in the 60 to near 65 degree range based on the 24hour cooling trend in the 900mb to 850mb layer from 00z Tuesday to 00z Wednesday. The warmer temperatures will be located near the Oklahoma border in south central Kansas. Lows tonight should be similar or possibly even a couple of degrees cooler compared to the lows early this morning given the clear skies and west winds at 10 mph or less. Lows will range from the lower 30s from Garden City west and north to the mid 30s elsewhere. A northwesterly down slope flow ahead of our next cold front will favor a nice warmup mid week.
632 PM CDT Thu Sep 14 2017 The surface front/trough is sitting off to the northwest of the forecast area over northern/west-central Nebraska. Winds will really increase during the day tomorrow as lee troughing deepens.
Scattered showers and thunderstorms drifting off the higher should be gone after that. /issued 237 PM CDT Thu Sep 14 2017/ An upper trough is currently moving over the Pacific Northwest and will combine with an upper low over southern Nevada on Friday. Upper ridging is over West Texas and southeast New Mexico with west to northwest flow aloft. The upper trough over the western part of the country broadens on Friday and starts to increase upper lift over the region.
High pressure will result in mainly dry and warmer weather through the weekend. During the day there is a slight chance of showers in the afternoon over the ridges but dry elsewhere. The high should result in mainly dry weather for most of the area, though areas in the higher terrain E-SE of PIT could see an isolated afternoon shower in closer proximity to the weak trough.
18Z surface data has high pressure over the Great Lakes and Ohio Valley with low pressure along the SD/NE border west of KYKN.
A ridge of high pressure will remain in place through the upcoming weekend.
Friday is shaping up to be another breezy to locally windy day as broad troughiness remains across the region under continued southwesterly flow.
High pressure and dry air overhead will limit cloud cover and precipitation chances the next 24 hours. /issued 245 PM CDT Thu Sep 14 2017/ SHORT TERM (Tonight through Friday Night):Deep South Texas and the Rio Grande Valley will continue to be influenced by 500 mb high pressure, initially over northwestern and northern Mexico, and then building west from the eastern Gulf of Mexico.
Windy conditions with widespread thunderstorms will continue to move across the area today as the low pressure system tracks across Southern Utah. Strong gusty winds have been seen across the area both associated with the storms and due to the approaching low pressure system. Winds should drop off dramatically this evening as convective mixing decreases near sunset and the low pressure system moves east. Quiet but cooler weather looks to develop Friday and beyond as a large scale trough looks to settle into the area.
This activity should continue to lift north and be primarily elevated over the low level frontal zone through the late evening hours.
849 PM EDT Thu Sep 14 2017 Low pressure will pass north of the region tonight. High pressure will build into the Mid Atlantic for the weekend. Highest threat for more widespread dense fog would be across portions of the central VA piedmont (Charlottesville-Culpeper) and the valleys west of the Blue Ridge (including the Shenandoah Valley).
820 PM CDT Thu Sep 14 2017 Another quiet night in store with warmer and more humid conditions than previous nights. /Issued 350 PM CDT Thu Sep 14 2017 by National Weather Service HOUSTON/GALVESTON TX/ Warm and dry across the region this afternoon with S-SE winds and weak upper level ridging shifting in from the west as it weakens.
/issued 352 PM CDT Thu Sep 14 2017/ (Tonight and Friday) After record-setting heat today, look for cooler temperatures to return to West Central Texas, during the next 24 hours. However, models indicate highs tomorrow will be cooler than today, as the eastward expansion, of a thermal ridge at 850 mb to our west, will be limited by cooler air at that level tomorrow afternoon. Cooler temperatures, at 850 mb, along with varying cloud cover, will help keep afternoon highs, mainly in the 90 to 95 range.
1139 PM CDT Thu Sep 14 2017 Latest water vapor imagery shows an upper level trough over the Pacific Northwest with a ridge axis over the Central Plains. Surface analysis shows a weak area of low pressure along the Nebraska/South Dakota border with a boundary extending to the northeast into northeast Minnesota. The aforementioned ridge axis over the Central Plains will move through the area today with the surface pressure gradient tightening ahead of the low pressure system. The increasing southerly winds will bring in some warmer air, including 925 mb temperatures in the 22 to 28 C range, leading to well above normal high temperatures in the 80s to possibly 90 degrees in a few spots.
525 PM MDT Thu Sep 14 2017 Current surface map shows cold front through south central South Dakota into southwest Nebraska. Water vapor places deep trof along the west coast. Temperatures marginally cold enough for some light snow in the higher elevations of the Black Hills with a mix possible for portions of northeast Wyoming.
0" will exist areawide, with stronger onshore flow pushing the sea breeze inland at a faster clip, thus favoring the western interior for the highest (40-50) POPs. Weak high pressure well north of the waters will support a developing and then slightly freshening onshore breeze from the northeast by the afternoon.
929 PM EDT Thu Sep 14 2017 High pressure was centered over the Lower Keys with westerly winds north of the Keys and easterlies south. Flow will turn east to northeast tonight and a lower precipitable water airmass, currently over the Bahamas, will advect westward into the Keys while a ridge aloft moves over the area.
This afternoon, water vapor imagery showed increasing cloud cover across the Pacific Northwest as a mid-level trough continues to dive southward over the western U. The presence of the low-level jet over central KS could support isentropic upglide to help produce some isolated showers and thunderstorms overnight into Friday morning. However, if the increased cloud cover from the AM showers lingers into the afternoon, then high temperatures may be a couple of degrees cooler across north central KS.
611 PM CDT Thu Sep 14 2017 With upper ridge overhead and south winds at surface, will have dry and warmer weather for the last part of the work week. As for any possible fog late tonight, should not be a problem as there was plenty of mixing during the day today to dry out the lower levels.
The higher MUCAPE values east of the Panhandles, along with a strengthening LLJ, raise some concern for redevelopment, possibly before midnight. For Friday, daytime heating/vertical mixing in the boundary layer will keep winds gusty across our area, while South winds will continue to bring in unseasonably warmer air with temperatures well in the lower to mid 90s. The winds, warm temperatures, and RH values in the lower 30s will maintain elevated fire weather conditons for Friday as well. A deepening trough of low pressure across the Western U.
808 PM EDT Thu Sep 14 2017 Low pressure will pass north of the region tonight. High pressure will build into the Mid Atlantic for the weekend. Highest threat for more widespread dense fog would be across portions of the central VA piedmont (Charlottesville-Culpeper) and the valleys west of the Blue Ridge (including the Shenandoah Valley).
Skies will be mostly cloudy tonight and Friday as an upper trough along the central Gulf coast lifts ne.
619 PM CDT Thu Sep 14 2017 Latest water vapor imagery shows an upper level trough over the Pacific Northwest with a ridge axis over the Central Plains. Surface analysis shows a weak area of low pressure along the Nebraska/South Dakota border with a boundary extending to the northeast into northeast Minnesota. The aforementioned ridge axis over the Central Plains will move through the area today with the surface pressure gradient tightening ahead of the low pressure system. The increasing southerly winds will bring in some warmer air, including 925 mb temperatures in the 22 to 28 C range, leading to well above normal high temperatures in the 80s to possibly 90 degrees in a few spots.
An area of low pressure is currently located over south central SD with a cold front just north of Watertown. The main upper level trough is located over the desert southwest. This trough will lift northward tonight which will bring increasing chances for showers and thunderstorms for locations along and west of the Missouri Valley by Friday morning. If the dry slot does develop and skies clear off, then highs in our eastern CWA will be warmer than expected.
850 PM PDT Thu Sep 14 2017 A trough of low pressure will bring patchy morning drizzle or light showers west of the mountains ridges Friday.
409 PM PDT Thu Sep 14 2017 A series of weak upper level disturbances moving into the west coast will keep conditions across our area dry and cooler than normal through the weekend. The small upper level low pressure system that has helped to produce some significant convection across our area recently, continues to pull away to our east, as an upper trough swings inland behind it. Temperatures are running a bit cooler again today as the passing low has brought an influx of cooler marine air along with some synoptic cooling. Models suggest just a slight chance for some convection over the mountains this evening as the upper trough continues to approach, but no significant QPF with the drier air in place.
1144 PM CDT Thu Sep 14 2017 With upper ridge overhead and south winds at surface, will have dry and warmer weather for the last part of the work week. As for any possible fog late tonight, should not be a problem as there was plenty of mixing during the day today to dry out the lower levels.
938 PM MDT Thu Sep 14 2017 Current surface map shows cold front through south central South Dakota into southwest Nebraska. Water vapor places deep trof along the west coast. Temperatures marginally cold enough for some light snow in the higher elevations of the Black Hills with a mix possible for portions of northeast Wyoming.
/Issued 350 PM CDT Thu Sep 14 2017 by National Weather Service HOUSTON/GALVESTON TX/ Warm and dry across the region this afternoon with S-SE winds and weak upper level ridging shifting in from the west as it weakens.
839 PM PDT Thu Sep 14 2017 A few showers and thunderstorms remain this evening as jet energy associated with an upper trough shifts through northern CA/NV. Westerly winds behind today's cold front are helping to usher smoke from wildfires in California into the Sierra and northern Nevada.
A low pressure system moving through the region today will bring a cooler, windy, and showery day to northern Arizona. Windy conditions with widespread thunderstorms will continue to move across the area today as the low pressure system tracks across Southern Utah. Strong gusty winds have been seen across the area both associated with the storms and due to the approaching low pressure system. Winds should drop off dramatically this evening as convective mixing decreases near sunset and the low pressure system moves east. Quiet but cooler weather looks to develop Friday and beyond as a large scale trough looks to settle into the area.
The main energy with the storm system out west will lift northeast, well north and west of the area, but we will eventually see a cold front that tracks south towards the area late in the weekend.
Expect a pleasant day tomorrow as ridging builds over the eastern US. It will be much warmer tomorrow vs. Chattanooga Airport, TN 63 84 65 85 / 0 0 0 10 Knoxville McGhee Tyson Airport, TN 61 81 61 83 / 10 0 0 10 Oak Ridge, TN 61 82 61 84 / 10 0 0 10 Tri Cities Airport, TN 58 78 56 81 / 20 10 0 10.
/issued 352 PM CDT Thu Sep 14 2017/ (Tonight and Friday) After record-setting heat today, look for cooler temperatures to return to West Central Texas, during the next 24 hours. However, models indicate highs tomorrow will be cooler than today, as the eastward expansion, of a thermal ridge at 850 mb to our west, will be limited by cooler air at that level tomorrow afternoon. Possible Rain and Cooler Temperatures. Cooler temperatures, at 850 mb, along with varying cloud cover, will help keep afternoon highs, mainly in the 90 to 95 range.
931 PM MST Thu Sep 14 2017 A cold front will continue to sweep through the area tonight resulting in much cooler autumn like temperatures for this weekend. Evening satellite loops this PM paint a near textbook example of an upper low pressure system and associated cloud fields as the main circulation center lifted through southern NV/UT into northern UT/CO. Winds have mostly calmed from their daytime gustiness, but will remain elevated regionally due to the prescence of the upper low and front. Cooler and drier conditions will close out the work week and open the weekend, with highs below seasonal normals (101 for Phoenix and 102 for Yuma). Given the abrupt change in airmass contradictory to recent biases, have based much of the forecast on raw guidance blends and towards the lower end of the guidance envelope.
645 PM CDT Thu Sep 14 2017 A large scale trough over the western U. and building upper level ridge over the eastern U.
Have adjusted POPS to extend coverage in those areas trough 03Z.
1221 AM EDT Fri Sep 15 2017 A weak cold front will push down from the north and stall across the area this evening. High pressure will be over the region on Friday.
Under high pressure, predominant VFR expected through much of the night and into the day Friday outside areas that experience BR/FG.
While deep layer ridging remains north and is responsible for our deep onshore flow, an inverted tropical trough axis just west of the Bahamas is making slow progress westward today and will move across the southern FL peninsula. High temps will range from the lower 90s srn sections to mid 90s for the northern interior. GFS indicates weak low pressure will move off the SW FL coast with southeast low level flow across east central FL.
As it interacts with the digging trough and help to intensify it. Several waves will rotate through the trough during the period, but with limited moisture available the biggest impacts may be a brief increase in clouds and a reinforcement of the cool air in place. There are several differences in the way the models are handling the tropical moisture associated with the remants of Harvey and its interaction with the longwave trough over the eastern U.
1058 AM EDT Tue Aug 22 2017 A strong cold front will move through the region late today and early tonight. Much cooler and drier conditions will return for the second half of the week. It will also be significantly cooler.
Complicated and somewhat uncertain forecast next few days as the local area resides between slow moving upper pattern of TUTT in Gulf, upper Bahamian low and upper ridging to the north bringing periods of dry air aloft wrapping overhead then times of increased instability and deep tropical moisture. While at the surface, weak Bermuda high pressure continues to ridge back into the Deep South while decaying frontal boundary holds along and southward from the Carolina Coast and a slow moving easterly tropical wave near the Bahamas.
610 AM CDT Tue Aug 22 2017 As a cold front pushes through eastern Nebraska and western Iowa, it is ushering out showers and thunderstorms and bringing in a drier airmass. Subjective 00Z upper-air analysis indicates broad upper- level trough over the upper Midwest, accompanied by an 80-95kt upper- level jet streak from the eastern Dakotas into northern ON. An 850mb low was centered on the northern ON/MB border, with a trailing cold front through MN/NE/western KS, and with moisture pooled ahead of the front.
and then expanding this afternoon into tonight as a cold front approaches. Cold front expected to pass overnight. VFR will continue through at least 21Z today with high pressure. After 21Z, an approaching cold front will bring a broken area of showers and thunderstorms from northwest to southeast across the area.
Southeast winds tonight will veer to the south overnight at all of our TAF sites except KABI, where winds should become light just ahead of a cold front. /issued 420 AM CDT Tue Aug 22 2017/ (Today and Tonight) An upper trough will move east across the Great Lakes today, and trailing portion of associated cold front will push south across much of Oklahoma and the Texas Panhandle. Weak northerly flow aloft will develop over our area, as an upper high becomes centered over far northern Mexico just south of El Paso this afternoon and tonight. With weak northerly flow aloft and expected convective development along the cold front, the boundary will make southward progress into our northern counties (Big Country area) tonight. Lows tonight are expected to be in the lower to mid 70s.
Temperatures are in the mid to upper 70s further inland and in the low 80s along the coast, with dew points in the low to mid 70s.
This boundary should stall over the next few hours and will likely provide the focus for additional thunderstorm development this afternoon as a cold front moves into northeast Oklahoma.
Temperatures will be on the cool side today, with highs ranging from the lower 30s over the tip of the Minnesota Arrowhead, into the upper 60s and lower 70s further inland. Temperatures over northern Minnesota could drop to as low as the lower 40s in some spots.
1120 AM EDT Tue Aug 22 2017 High pressure retreats well offshore today. A strong cold front will move across the region tonight and early Wednesday accompanied by showers and thunderstorms.
536 AM MDT Tue Aug 22 2017 Stratus has developed in southerly upslope flow along the Cheyenne Ridge and southern Laramie Range, but so far no fog has been observed in these areas. An upper level ridge will build over the western CONUS today, and over the Rockies by Wednesday. Temperatures should increase a few degrees each day as the ridge builds, and it looks like precip chances will increase as well. For today, the dry airmass evident on current water vapor imagery will remain overhead, although some moisture to our southwest may reach the higher mountain peaks of south-central WY.