Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure centered over OH will extend southward into the TN Valley tonight, providing calm winds. We will continue to see a warming trend into Saturday as the ridge aloft builds east, and highs will reach the 50s across the lower elevations. Mostly clear and cold again Saturday night as cold high pressure still lies across the eastern Tennessee Valley and Southern Appalachians. Temperatures again will be near to several degrees below freezing.
320 PM CST Fri Mar 3 2017 This afternoon a strengthening N/S-oriented sfc trof continued to strengthen from the Northwestern Plains to the CO/NM border. In fact, a small area of low pressure has developed over Eastern CO. Tonight: The afore-mentioned sfc trof camping out across the Western Plains will team with the large, strengthening high pressure to keep fairly brisk S/SW flow across the KS Neighborhood. Sat Night-Sun Night: Overall the lower-deck pattern changes little.
1147 AM EST Fri Mar 3 2017 Brief high pressure tonight. Warm front Saturday.
108 PM PST Fri Mar 3 2017 An approaching cold front will produce cooler onshore flow and dense coastal fog tonight along with increased cloudiness tomorrow.
RIdge axis aloft is quickly moving across the area and high pressure has settled in over the central Montana mountains this is generating a downslope affect with drying and warming in these areas regardless of snow coverage still present on GOES imagery. An upper ridge will follow this afternoon and evening with dry weather and warmer temperatures. Flow aloft turns to the southwest tonight as ridge moves to the east. An area of moisture will move along a cold front that will be northwest of the forecast area.
237 PM EST Fri Mar 3 2017 Brief high pressure tonight. Warm front Saturday.
High pressure ridge at the surface will be exiting the region to the east tonight. Usually, low level moisture return precedes mid and upper level moisture ahead of an upper level trough but that will not necessarily be the case with our weekend system. This upper level trough is currently spinning across the Baja region of NW Mexico attm and is forecast to quickly begin filling as it moves into the Tx Hill Country during the day Saturday.
Temps currently are widely ranging from the upper 40s east to the low 60s west. Upper ridge currently over the Great Basin will move into the plains on Saturday.
Warm front developing from central MT into eastern CO. Water vapour had upper ridge building over the Rockies into the northern plains with AC/CI shield spilling over CWA on well-defined warm air advection regime. Today through Saturday, warm front pushes east of CWA as upper ridge moves over the northern plains today and then over the Midwest Saturday. Bumped up winds over northeast WY and the higher elevations of the Black Hills Saturday afternoon given deep mixing potential and 2-4mb/3hr pressure falls to our east.
Additional accumulations will be light, generally an inch or less with the highest amounts near and north of the Indiana and Michigan state line. A warm front will then bring a chance for light snow back into the area early Saturday morning.
125 PM PST Fri Mar 3 2017 Fair and warmer than normal weather will continue today with weakening offshore flow.
The highest Pops, likely will be across the far southeast. Highs will be in the lower 60s, with south winds of 10 to 20 mph. Extensive cloud cover will help to keep overnight low temperatures above seasonal normals, in the low to mid 50s.
Strengthening north northeasterly flow this evening will advect in a cooler and relatively drier airmass.
Weak cold front approaching from the northwest coast will bring rain and snow late tonight through Saturday morning, but little if any cooling.
Vigorous midlevel trough beginning to eject across northern Mexico will push significant midlevel moisture into the region overnight. The midlevel trough will continue sweeping eastward Saturday evening, drawing in drier air from the west.
817 AM PST Fri Mar 3 2017 Fair and warmer than normal weather will continue today with weakening offshore flow.
1226 PM CST Fri Mar 3 2017 High pressure continues over the area. (ISSUED 1146 AM CST Fri Mar 3 2017 ) High pressure continues across the area. Winds shifted to the northeast and east behind a weak cold front. High pressure will remain in control with VFR conditions through the period. A new cold front continues to push south through the state this morning. cold front is pushing south through the CWA early this morning.
Increasing high clouds are moving across Northern California in advance of an upper level trough approaching the state.
Surface lee trof well established across eastern CO with breezy winds and Red Flag conditions materializing across Baca County.
1250 PM EST Fri Mar 3 2017 High pressure will build into the area promoting dry and cooler weather through the weekend. Dry high pressure, currently centered over the Midwest, will build SE towards the Central and Southern Appalachians through tonight, maintaining a feed of cool dry air into our region. Guidance indicating low temps late tonight at or below freezing. Dry high pressure will remain across the region.
Max T for a few of the ridgetops was lowered about a degree or so based on recent trends. With temperatures barely dropping to freezing and road temps being warmer, the accumulation would probably be limited to grass and elevated surfaces.
High pressure across the region today will shift east this weekend ahead of a cold Pacific storm.
This is the result of increasing winds aloft and low pressure tracking across Srn Canada.
237 PM EST Fri Mar 3 2017 Gusty winds and scattered snow showers associated with a crossing cold front this afternoon will be followed by dry weather through the weekend as high pressure builds back in over the region. Activity will decrease in intensity the remainder of the afternoon as the associated cold front continues southeast. Snow production will cease overnight as building high pressure decreases the boundary layer. High pressure will provide dry conditions through the weekend with a warming trend in temperatures.
408 AM MST Thu Jan 12 2017 Ahead of a closed 500 mb low along the west coast a ridge is pushing the old frontal surface over the forecast area as a warm front. Tonight and Friday The 500mb closed low along the southern California coast will continue southward Friday night. Cooler mid-level temperatures will support slightly higher snowfall ratios than the most recent event for the mountains.
940 AM EST Thu Jan 12 2017 Stable WX pattern over central FL as an elongated ridge axis spanning the W Atlc maintains deep E/SE flow acrs the region. Radar trend shows precip struggling to maintain itself as it moves out of the warm Gulf Stream into the cooler shelf waters. High pressure ridge extending from Bermuda acrs the FL Panhandle will maintain a gentle to moderate easterly breeze acrs the lcl Atlc.
SHORT TERM (Now through Friday): The pressure gradient will relax some today as the low pressure system across the Plains weakens. High temperatures today will range from the 70s along the coast to the low to mid 80s inland under a mix of sun and clouds.
Patchy freezing drizzle will still remain a possibility over far se WI through 9 AM. Medium to High Dry weather will likely prevail through the daytime hours Friday under strong high pressure.
Chattanooga Airport, TN 67 54 68 52 / 20 20 20 20 Knoxville McGhee Tyson Airport, TN 67 54 65 51 / 20 20 30 20 Oak Ridge, TN 66 54 64 50 / 20 30 40 30 Tri Cities Airport, TN 65 49 61 45 / 20 30 40 40 TN.
435 AM PST Thu Jan 12 2017 One last system will bring relatively light rain to the lower elevations today with a few inches of snow over the Sierra.
A weak cold front will move into the area today, w/fropa at KMAF ~ 14Z.
The 00Z models differ considerably with timing and southward progress of the front into our area, and with how much cooler/colder temperatures will be behind the front. Given the sharp temperature drops immediately behind the front and density considerations, and with collaboration with other surrounding forecast offices, we are incorporating some of the higher resolution model data for temperatures and winds today and tonight. The flow aloft over Texas becomes southwest, as an upper low develops and moves south along or just offshore the California coast, and an upper ridge builds over the southeastern CONUS.
500 AM CST Thu Jan 12 2017 Breezy south winds continue this morning ahead of an approaching cold front, which has advanced into east central Oklahoma as of 10Z this morning.
An upper ridge axis will slip southeast through western Washington today, supporting a dry and stable air mass with mostly clear skies.
Strong cold front pushing slowly through eastern Oklahoma and into northwest Arkansas. The rain may reach TUL/RVS/BVO before 12Z as well, and with temperatures below freezing, would result in FZRA at these terminals. /Issued 301 AM CST Thu Jan 12 2017/ Strong/Arctic cold front pushing south of Interstate 44 this morning. Freezing line still appears to hold near the Interstate 44 corridor tonight into Friday with light freezing rain likely along and to the north.
947 AM EST Thu Jan 12 2017 Upper high building to our south will provide fair and warm conditions through Friday.
613 AM EST Thu Jan 12 2017 Upper high building to our south will provide fair and warm conditions through Friday.
After collaboration with surrounding WFOs, we will issue a freezing rain advisory for the southern zones from 12Z to 18Z. patchy freezing drizzle is expected early this morning as the DGZ is unsaturated. Sfc ridging building in for Friday but another area of f-gen arrives Friday night and this one could put down a stripe of light snow across the central or northern forecast area.
Wind Chill Advisory looks in good shape, but will add mention of blowing snow in the grids and the highlight for mainly locations east of Miles City to Broadus.
1041 AM EST Thu Jan 12 2017 Upper high building to our south will provide fair and warm conditions through Friday.
Fog will linger into the mid-morning hours before dissipating leaving another partly sunny/mild day as High Pressure ridge lingers from the WRN Atlc across south GA. High pressure will remain north of the region through the weekend with onshore flow generally around 10 knots.
540 AM EST Thu Jan 12 2017 More rain is expected today ahead of a cold front. The next cold front will keep in the risk for showers throughout the day, with the best chance coming during the afternoon, as the boundary approaches. There is the potential for these stronger winds to mix down to the surface, however, the greatest threat for advisory level winds will remain over the higher elevations, as the region remains in the warm sector. High pressure will build over the eastern Great Lakes behind the front, keeping the area dry on Friday.
Chattanooga Airport, TN 68 54 68 52 / 20 20 20 20 Knoxville McGhee Tyson Airport, TN 68 54 65 51 / 20 20 30 20 Oak Ridge, TN 67 54 64 50 / 20 30 40 30 Tri Cities Airport, TN 66 49 61 45 / 20 30 40 40.
309 AM MST Thu Jan 12 2017 for this morning, the models show a short wave ridge over CO with a weak period of subsidence this morning. The HRRR however has been indicating the development of a Denver Cyclone and notably higher qpf over southern and western parts of metro Denver this aftn and early evening. An upper level low will be off the southern California coast Friday.
/issued 500 AM CST Thu Jan 12 2017/ Breezy south winds continue this morning ahead of an approaching cold front, which has advanced into east central Oklahoma as of 10Z this morning.
843 AM EST Thu Jan 12 2017 More rain is expected today ahead of a cold front. While there has been no indication of the strong low-level jet mixing down along the convective line, the ridges will need to be checked for possible advisory-level gusts later today. The next cold front will keep in the risk for showers throughout the day, with the best chance coming during the afternoon, as the boundary approaches. There is the potential for these stronger winds to mix down to the surface, however, the greatest threat for advisory level winds will remain over the higher elevations, as the region remains in the warm sector. High pressure will build over the eastern Great Lakes behind the front, keeping the area dry on Friday.
The short term models were a little too ambitious about pulling the trough southward this morning, so opted to increase shower coverage across Humboldt and Elko Counties this morning, base on current radar signatures.
With the ridge overhead Friday should be relatively quiet with mostly sunny conditions. Clouds are certainly possible though, and have some increased cloud cover and slightly warmer min temperatures.
355 AM MST Thu Jan 12 2017 Ahead of a closed 500 mb low along the west coast a ridge is pushing the old frontal surface over the forecast area as a warm front. Tonight and Friday The 500mb closed low along the southern California coast will continue southward on Friday. Cooler mid-level temperatures will support slightly higher snowfall ratios than the most recent event for the mountains.
Expect that tonight through Friday morning it will be colder under mostly clear skies and building high pressure.
Temperatures were on the rise as the wind kicked in, with Bismarck jumping 5 degrees in 20 minutes and now holding in the mid 30s, the high for the day so far.
700 PM EST Mon Dec 19 2016 A stationary front will remain off the coast with cool high pressure ridging into the Carolinas and Georgia from the north overnight.
752 PM PST Mon Dec 19 2016 A robust winter storm will come through the region tonight and will bring snow to much of the Inland Northwest, with local areas of freezing rain.
730 PM EST Mon Dec 19 2016 23z sfc analysis shows high pressure building more solidly into eastern Kentucky this evening. This should finally clear out the low clouds that have plagued the area for the past 36 hours. This means a small to moderate ridge to valley temperature split will develop with chilly low temperatures down in the teens. High pressure will build in and settle over the region tonight.
Warmer airmass out west will also get advected east as winds turn westerly. With 925mb winds increasing a bit overnight, expect an uptick in speeds again along and just to the east of the ridge line.
1030 PM EST Mon Dec 19 2016 Currently - An area of high pressure over the eastern United States is in the process of bridge across a stalling front. Meanwhile, deep layered ridging is in place aloft with ample warm dry air aloft. Gentle to Moderate breezes will prevail across the Florida Keys through the overnight period due to a high pressure system to our north being reinforced by another high over the eastern United States.
512 PM MST Mon Dec 19 2016 Expanded the High Wind Warning to include northern portions of Carbon County, Converse County (mainly for western portions), central Laramie County, and the remainder of Platte County for tonight through Tuesday. Some concern Tuesday with warmer temperatures.
Light winds and moisture in the low-levels will aid for fog/low stratus cloud development overnight into Tue morning. Shallow inverted sfc trof will help generate a moderate to fresh N/NE breeze from Sebastian Inlet northward with seas building to 4-6FT.
1027 PM EST Mon Dec 19 2016 High pressure over Indiana will move across Ohio overnight to the east coast on Tuesday.
Warmer temperatures are anticipated during the next 24 hours(when compared to the very cold temperatures of the previous 48 hours or so), although locations such as portions of the San Luis Valley and sections of the snow covered lower Arkansas River Valley will still struggle with some cold temperatures.
504 PM EST Mon Dec 19 2016 A stationary front will remain off the coast with cool high pressure ridging into the Carolinas and Georgia from the north overnight.
Temperatures everywhere above freezing at the end of the day, so removed blsn wording from forecast, since the sun and warmth put a crust on top of the snowpack. Looking upstream, a fast moving ridge/trough couplet lie over the British Columbian coast and stretch back into the Gulf of Alaska.
833 PM EST Mon Dec 19 2016 High pressure will control the region's weather for the first half of the week.
533 PM CST Mon Dec 19 2016 High pressure ridge has shifted southeastward into the Ohio River Valley, allowing a southerly return flow to commence across the KILX CWA this afternoon. Temperatures have responded nicely, with 20z/2pm readings well into the teens and in some cases the lower 20s. Afternoon highs will reach the middle 30s across most of the area, but will remain in the lower 30s along/west of the Illinois River where a slightly more substantial snow cover exists. Upper level heights to rise over the next few days as the cold 500 mb trof edges away from the Midwest.
Arctic high pressure is currently in control. As high pressure slides east tomorrow temperatures will moderate closer to normal.
630 PM EST Mon Dec 19 2016 High pressure and a dry airmass will build across the region through mid week.
Clear weather will continue through Tuesday as weak high pressure builds over Arizona with cold overnight lows across much of the high country. The water vapor loop is showing a large area of low pressure off the Baja Coast this afternoon. This low is becoming cut off from the general west to east flow and allowing weak high pressure to develop over Arizona.
Meanwhile at the surface, high pressure is firmly entrenched across western Arkansas with winds expected to go calm tonight across much of the I-30 corridor. Farther south, temperatures will generally run in the lower to mid 20s which is just above our hard freeze criteria. Temperatures will recover quite a bit more on Tuesday afternoon compared with the last few days, ending up about 10 degrees warmer in the upper 40s to lower 50s.
551 PM MST Mon Dec 19 2016 Updated to adjust overnight lows for tonight, especially along the lower Arkansas River Valley. Warmer temperatures are anticipated during the next 24 hours(when compared to the very cold temperatures of the previous 48 hours or so), although locations such as portions of the San Luis Valley and sections of the snow covered lower Arkansas River Valley will still struggle with some cold temperatures.
541 PM EST Mon Dec 19 2016 High pressure over the region will gradually settle south of New England tonight through Tuesday.
834 PM EST Mon Dec 19 2016 Cold front has moved through the region, and the shower activity has ended. Temperatures have fallen to the mid 40s across the northern portion southeast Georgia, but remained in the lower 70s across Marion County. Shallow cold front will continue to move southward, with overrunning clouds and drizzle possible through the night into the day on Tuesday.
Arctic high pressure continues to settle over the Mid South tonight. The axis of the Arctic surface pressure ridge will settle along and north of the I-40 corridor.
/Issued 309 PM CST Mon Dec 19 2016/ Under mostly sunny skies, temperatures have risen to or above freezing at many locations across eastern Oklahoma and western Arkansas this afternoon. The warming trend will continue for the next couple of days as the responsible high pressure system continues to shift to the east.
615 PM EST Mon Dec 19 2016 High pressure will crest over the area early this evening.
Lower clouds are slowly dissipating from northwest to southeast across the forecast area this evening as dry air mass is scouring out the low level moist air mass. Temperatures at 900 pm are in the lower to mid 20s where skies are mostly clear to the lower to mid 30s central and eastern mountains where low clouds have persisted.
A warmer near zonal flow will be maintained through Tuesday.
610 PM EST Mon Dec 19 2016 High pressure over southern Illinois will move across Ohio tonight on it's way to the east coast Tuesday.
Main concern over next 24 hours still revolves around high wind potential for the higher mountains and east slopes. Given the increase downslope flow and cloud cover, expect warmer overnight temperatures. Warmer yet on Tuesday but still lower temperatures over S Platte river valley and low lying areas.
For now will keep the cooler temps over nw AL (with less cloud cover expected) and the warmer temps for locations with the greatest cloud cover. Anyway you slice it, mrng lows across the cwa will range from the low to mid 20 with a few upper 20s in our sern zones (with the most cloud cover expected). The atmosphere is dry as a bone except in the lowest levels of the boundary layer, this is also shown by the 00z U/A soundings from BHM and OHX. Tuesday night a mid level trough dips into the Texas panhandle region with a weak surface feature developing over LA.
1013 PM EST Mon Dec 19 2016 A stationary front will remain off the coast with cool high pressure ridging into the Carolinas and Georgia from the north overnight.
934 PM EST Mon Dec 19 2016 High pressure over the region will gradually settle south of New England tonight through Tuesday.
920 PM EST Mon Dec 19 2016 High pressure and a dry airmass will build across the region through mid week.
605 PM EST Mon Dec 19 2016 VFR conditions will prevail this forecast as dry southwesterly flow funnels through area around large area of arctic high pressure to the south. The pressure gradient will tighten between this high and low pressure tracking just north of Lake Superior. The deep troughing and Arctic cold that has characterized the middle portion on December will begin its grand exit tonight as baroclinic westerlies lift poleward for the forseeable future.
1232 AM EST Mon Nov 21 2016 High pressure moving across the region will provide fair weather through Tuesday.
Today Through Tuesday Night An upper ridge will be over the Plains today but will move east of the Mississippi River this evening. An upper trough will move into the Rockies tonight and into the Plains Tuesday. The trough axis does not move through Arkansas until late Tuesday night. a low pressure system just east of the Rockies will gather strength this evening and an associated warm front will move through Arkansas. This warm front will bring more southerly winds and moisture to the state. The low will move through Kansas Tuesday with a trailing cold front. ahead of and along the cold front.
Upper level trough currently located off the coast will move across the region late tonight into Mon. A brief period of dry weather Mon night into Tue before the next cold front moves through Tue night with rain and mountain snow. A weakening and splitting upper level trough is approaching the west coast this afternoon. This trough will move into the region tonight and then move across the region on Monday. With the passage of the upper trough Monday, should see some mixing of this air mass in the Basin. Thus could see high temps reach back into the lower 50s in the lower Basin. May again see some patchy fog at the lowest elevations Monday night into Tuesday morning.
Scattered thunderstorms will be possible along and just ahead of the cold front Tuesday afternoon and evening mainly over locations near and east of Interstate-35.
1146 PM CST Sun Nov 20 2016 An elevated warm frontal boundary will move east across southern Manitoba into northwest Ontario, bringing broken to overcast mid- level clouds across northern Minnesota into northwest Wisconsin this evening. A mix of sun and clouds to start off Monday, but clouds will gradually be on the increase from west to east associated with a stronger warm frontal zone pushing northeast across the northern plains into the Canadian Prairie associated with a developing low in southern Saskatchewan.
1002 PM MST Sun Nov 20 2016 Current surface map shows warm front across eastern Montana/western South Dakota. Warm front pushes slowly west overnight. Upper trof moves from the Rockies in the plains Monday night. The upper trough will exit the area Tuesday with chances for light rain and snow ending from west to east across southwest and central SD.
359 AM EST Mon Nov 21 2016 High pressure will build in from the west through mid week. A cold front with limited moisture will move through the area on Thanksgiving day.