Aikyam-Lab/Synoptic-Bench huggingface dataset:
946 AM CST Fri Mar 10 2017 A cold front is currently draped from eastern West Virgina, southwestward through north Alabama and into Mississippi. Temps currently in the lower 60s will likely drop by a couple of degrees over the few hours and then rise this afternoon. During the evening, forecast soundings indicate rapid cooling of mid levels with a near isothermal layer around 0C above 850 mb, while low levels stay above freezing during the evening hours.
A ridge of Canadian high pressure centered across the region will slowly exit east through tonight, putting an end to the mainly dry weather.
An upper level ridge is set to advance over Montana on Saturday with the departing storm system to the east. As the CWA will remain on the advancing edge of this ridge, heights will only rise modestly and so expect a continuation of the cold air mass with highs in the single digits and teens, and perhaps around 20 in the far southwest zones.
632 AM EST Fri Mar 10 2017 Much below normal temperatures are in store from today through the weekend as a broad ridge of Canadian high pressure settles into the region.
Classic dirty ridge pattern over the west coast allowing plenty of high level moisture connecting back to the tropics to spread over Northern California. remainder of short term forecast is completely dry as the west coast upper ridge begins to amplify.
459 AM CST Fri Mar 10 2017 A cold front moving into the Red River Valley from the north brought a line of strong thunderstorms along an outflow invok frontal boundary, which have mostly diminished during the wee hours. A stronger cold front will move quickly across area later Saturday into Sat night.
Eventually looking for a wave/coastal trof to develop along this remnant/diffuse boundary near the middle Tx early Saturday - then move ENE toward SE Tx during the day and overnight hours.
550 AM CST Fri Mar 10 2017 Updated for 12Z aviation discussion 12Z TAF discussion: Scattered SHRA/TSRA and mainly MVFR category ceilings will continue to accompany the southward moving cold front. /EC/ Today through tonight: A loosely organized and diminishing mesoscale convective system over central/northern portions of the ArkLaMiss early this morning will continue to push south ahead of an approaching cold front. In the wake of the cold front, a temporary intrusion of dry air is expected to end rain chances as we go through late afternoon and the overnight hours. There will be just a glancing shot of cooler air behind the front, so temperatures will not fall too much, and they could actually remain a bit above climatic normal in many locations.
Snow levels are running at 7500 feet and up, so there could be some light snow in the higher elevations though liquid amounts will be light, less than 0. For the weekend, flat ridge will remain over California and Nevada with light winds and periods of mid and high cloud cover.
Cold front still on track to push thru the region during the day Fri. Much cooler and breezy in the wake of the front.
248 PM CST Thu Nov 17 2016 A 999 mb low pressure over west central Iowa has a cold front extending sw through central KS to deepening 994 mb low pressure near the OK panhandle and NM border. The models take strong low pressure ne from OK panhandle into central Iowa by 12Z/6 am Friday and then to western upper MI by 6 pm Friday. This will push a strong cold front east into the IL river valley by 18Z/noon Friday and pass east of IL by 6 pm Fri. Temperatures to fall behind the cold front during Friday afternoon as fairly strong SSW winds 15-25 mph and gusts of 30-40 mph turn westerly during Fri afternoon.
BMickelson Previous short term discussion: Cool temperatures will prevail across the region today as an upper level trough gradually translates eastward. As the trough axis moves downstream of eastern Montana expect rising heights in advance of a building upper ridge over the Pacific shore. This ridge will become more established over the area by the beginning of the weekend.
expect to see this low level cloud cover begin to mix out but with a cu field remaining with an expanding cu field further east as well. The Lake Wind Advisory still looks good as the stronger winds in the lower levels will result in a strong pressure gradient just northwest of the I-30 corridor. A cold front remains forecast to sweep across E TX, S AR, and N LA during Friday with SCT showers and TSTMS.
355 PM CST Thu Nov 17 2016 An upper level ridge is currently centered over the Gulf of Mexico and extends all the way into Canada. Down that he surface, high pressure is situated just to the east of the upper ridge apex. The upper ridge will be quickly progressing east Friday while a trough moves out of the Rockies and across the central/high plains. Temperatures will still be quite warm but a few ticks below Thursday as heights begin to fall from exiting ridge. A strong cold front on the leading edge of the trough will be moving across north Louisiana Friday afternoon. Highs over the weekend will barely reach into the lower 60s.
Warm air and moisture advection ahead of an approaching cold front will help in the formation of at least scattered showers by mid morning Friday.
A sfc and mid-level ridge axis remains centered across the deep south with a trough axis pivoting through the Four Corners region. The ridge across the area will lead to another day of well above normal afternoon high temps, in fact a few locations will flirt with daily record high temps. The warm dry weather will lead to elevated fire weather concerns this afternoon, mainly across the NW Delta, where RH values will drop in the low 20s due to mixing this afternoon. /17/ The combination of very dry soils, coupled with highs this afternoon topping out in the lower 80s, and afternoon minimum relative humidity values between 20%-30%, will lead to an increased threat for fire danger across mainly central and northern portions of the forecast area this afternoon.
Will start to see decreasing CIGS after midnight and especially by after sunrise Fri as moisture surges north ahead of an approaching cold front. Upper ridge centered over the western Gulf of Mexico will shift eastward over the next 24 hours, which will allow the aforementioned frontal boundary to move down into the plains.
Abundant low level moisture behind this disturbance could also provide for some fog and areas of freezing mist or freezing drizzle. with the higher amounts coming across the south.
1254 PM EST Thu Nov 17 2016 High pressure will prevail through late week.
The mid/upper ridge axis will shift to out east through tonight and tomorrow, bringing a deep SW flow that will keep temperatures well above normal. Winds will be a little higher as the approaching cold front moves into the Ozarks and MS Valley, around 10 mph in the Plateau and southern TN Valley. Weekend Overview: On Friday night a deep upper level trough and strong cold front will be approaching our area.
Another similarly cold night tonight, then windy and warmer Friday as next Pacific upper ridge comes rapidly inland.
This morning's sounding is significantly warmer in the low-levels than yesterday, which should allow high temperatures today to climb into the mid 70s to lower 80s.
135 PM EST Thu Nov 17 2016 High pressure continues through Friday.
1237 PM EST Thu Nov 17 2016 Warm and dry high pressure will hold over the region through Friday night.
A strong upper level low has moved into the High Plains, bringing an attendant cold front through Southwest Kansas today. Temperatures will drop through this evening to sub-freezing levels. Temperatures will be tricky today given the early morning cold frontal passage and late afternoon warm frontal surge. Much cooler air can be expected by late tonight.
Guidance suggest high temperatures may be a bit warmer than previously forecast and have adjusted upward a degree or two. High pressure centered over the Central and Southern Plains will maintain a moist southerly flow over the region with light winds. This combined with relatively strong upper level ridging will continue to favor very warm afternoon temperatures. Highs will rise into the lower 80s most places, with middle and upper 70s along the coast.
Temp trends thus far have rebounded nicely from their earlier lows ranging from the upper 30s to the mid 40s now to predom the lower/mid 50s for most areas. With high pressure at the sfc/aloft dominating the wx pattern across the SE states, temps will continue to easily climb into the upper 70s/near 80F this afternoon under mainly sunny skies. A deep upper trough in the upper midwest makes its way east on Friday with a trailing cold front that should be near the AR/MS line by 18-21z. Temps will be similar to today, maybe a deg cooler, as clouds start to move in.
230 PM EST Thu Nov 17 2016 Warm and dry high pressure will hold over the region through Friday night.
Cold front will move into northeast Oklahoma after midnight with scattered showers/thunderstorms developing along boundary late tonight across southeast Oklahoma/northwest Arkansas.
Clearing skies are expected tonight which will allow for freezing fog to develop across the region. The typical colder valleys will not see much of a breeze, but higher locations like Anaconda to Butte and the higher elevations south of Grangeville, Idaho there could be enough of a southerly breeze to keep temperatures up a bit.
322 PM EST Thu Nov 17 2016 High pressure continues through Friday.
In the meantime, southwesterly flow will begin increasing tonight between departing high pressure to the east and deepening system to the west. As surface cold front approaches, clouds will increase from the west late in the day Friday with frontal showers expected Friday night with passage occurring around the midnight time frame.
Issued by National Weather Service Baltimore MD/Washington DC 352 PM EST Thu Nov 17 2016 High pressure will build over the East Coast through Friday.
Increased cloud coverage is expected across most areas this evening continuing through Friday ahead of a strong cold front. As the cold front moves through the area, a line of scattered showers and isolated thunderstorms are expected to affect parts of the Hill Country and areas along and east of I-35.
SHORT TERM (Tonight through Friday Night): A 500mb trough across the western United States this afternoon will move across the central United States tonight Friday bringing a strong cold front into central Texas Friday morning. Moisture will pool along and ahead of the front and showers and thunderstorms will develop across portions of east and south TX Fri afternoon and across the rest of south TX Fri evening as the cold front moves through the CWA Fri night.
Weak upper level trough will remain over the Pac NW through early afternoon and will exit to the east later this afternoon. A weak disturbance moving through the trough has enough forcing to into low level instability and initiate rain and snow showers over the north Panhandle. But this will be a brief respite as high pressure moves into the region this evening, clearing skies and light winds will promote good radiational cooling and promote more fog/stratus development in the usual locations through the night. Tobin 18Z TAFS: An upper level trough will remain over the area today with a weak disturbance moving through ridge and across the northeast zones. The lower atmosphere will remain saturated resulting in a good chance of low clouds and fog reforming overnight.
153 PM PST Thu Nov 17 2016 Cooler weather inland today, with breezy offshore winds decreasing throughout the day. Freezing to near freezing low temperatures tonight in the High Desert, with areas of frost expected. Highs slightly above normal this weekend under weak high pressure aloft.
High pressure will return to the interior west Friday and remain over the area through the weekend. The Pacific trough that moves through the area yesterday evening and overnight is now centered near the UT/CO border this morning. Continuing to see some rather gusty winds over eastern Utah in the wake of the trough, primarily in those areas that are prone to receive northwesterly downslope winds. In the wake of the trough, a much colder airmass has settled in over the forecast area. High pressure is on track to move in tomorrow and remain in place through the weekend, causing rapid upper level warming. Additionally, the rapid clearing will cause areas of fog in prone areas, particularly those in the northern and southwest valleys, which received the most snow with the trough.
Did add the mention of precipitation for CRP/VCT for the late Friday morn- ing timeframe given the current progs with the timing of the cold front. Along the lower TX Coast winds have increased to just under 20 knots but could increase above 20 knots later today. Changes to the weather will be coming Friday evening as a cold front pushes through the area with a line of showers/thunderstorms. Much cooler conditions are still expected for the weekend.
Increasing moisture ahead of an approaching cold front late tonight may result in a brief window of MVFR cigsand vsbys in scattered TSRA across the SE OK and AR sites. Will continue to monitor dewpoint and wind trends for possible red flag criteria across northeast Oklahoma as we head towards the afternoon Cold front will move into northeast Oklahoma tonight. with breezy northwest winds ushering in cooler temperatures behind the boundary.
A cold front remains forecast to sweep across E TX, S AR, and N LA during Friday with SCT showers and TSTMS.
320 PM CST Thu Nov 17 2016 (Tonight and Friday) Main concern for tonight is the threat for thunderstorms in the Northwest Hill Country as the cold front approaches. The values ranged from 1500 to 1700 J/KG near Junction with dewpoints in the low to mid 60s, but the CIN of -30 to -50 may be enough to sustain the capping inversion. The cold front should slide across the area between Midnight and 6 AM tonight, sweeping the low level moisture east and ushering in cool and breezy north winds to the region tomorrow. Highs on Friday will only climb into the upper 50s north to the low to mid 60s south.
Medium With low pressure continuing to develop to our west this will maintain an unseasonably mild southerly flow into the area tonight through at least Friday morning. Went with mins above MOS for lows tonight and should see a nice rise in the morning ahead of the cold front.
Strong cold front stretching from Lake Powell northeast to Craig will continue to move slowly eastward this morning. Have backed off the higher end of the snowfall accumulation for our mountains by an inch or two, but still expect significant travel impacts in our CWA. Coldest night of the season anticipated tonight for just about the entire forecast area and freeze warnings already issued for the few valleys that managed to escape the freezing weather so far this fall. That will come to an end tonight and again Friday night with temps down into the teens and 20s with some single digit readings anticipated for the higher valleys.
1230 PM EST Thu Nov 17 2016 Aviation A couple of mild days are expected with highs well into the 60s today and Friday before a strong cold front arrives Friday afternoon.
A cold front is still forecast to move across the Mid-South, mainly during the afternoon and early evening hours on Friday, providing a good chance for showers and thunderstorms. High pressure covers much of the eastern U. This high will provide one more day of dry weather with temperatures remaining well above normal. By Friday, A fairly strong cold front will sweep through the region. Temperatures will be a little cooler on Friday with highs mainly in the 70s. The cold front will be east of the region by late Friday night. Much cooler and drier air will move in behind the front.
1139 AM EST Thu Nov 17 2016 Late morning surface analysis depicts high pressure (1021 millibars) blanketing the eastern third of the nation. deep-layered ridging extending from the Tennessee Valley to the central Gulf of Mexico was gradually building into our region as troughing off the eastern seaboard progresses further out to sea. Cooler shelf waters and the sea breeze will keep coastal highs generally in the lower 70s. Another seasonably cool overnight can be expected, with light easterly winds advecting slightly higher moisture into our area in the low levels and likely creating at least patchy fog over most locations overnight. High pressure centered over the southeastern states will remain in place just to the north of our region through Friday evening, with a loose pressure gradient promoting a weak sea breeze during the afternoon hours in the near shore coastal waters.
Some snow may linger across south central South Dakota Friday morning, otherwise high pressure builds across the area during the day. Upper level ridge will build over the Northern Plains for the weekend, with dry weather returning.
A passing cold front delivered a sharp blast of cold air to Arizona with much colder temperatures today and Friday. Low temperatures tonight will fall well below freezing at most locations across northern Arizona. Drier and warmer weather will return for the weekend.
A transitory ridge will keep eastern WA and OR dry tonight and Friday morning.
1131 AM EST Thu Nov 17 2016 Update A couple of mild days are expected with highs well into the 60s today and Friday before a strong cold front arrives Friday afternoon.
315 PM CST Thu Nov 17 2016 Upper level ridge axis is directly over middle TN this afternoon.
148 PM EST Thu Nov 17 2016 Hydro A couple of mild days are expected with highs well into the 60s today and Friday before a strong cold front arrives Friday afternoon.
125 PM CST Thu Nov 17 2016 Record or near record warmth today will yield to impending changes coming tomorrow-tomorrow night in the form of the developing cold front and its ultimate passage that will usher in much colder air for the weekend.
400 PM EST Thu Nov 17 2016 Another warm day is expected on Friday before a strong cold front crosses the area Friday night.
As the first winter storm of the central Rockies brings measurable snow to areas well to our south today, an area of relative high pressure keeps the snow away from northeast Montana. As the next upper-level ridge slowly moves west through the western states the flow over NE Montana will transition from NW late tonight to more zonal late tomorrow night.
Will continue to monitor dewpoint and wind trends for possible red flag criteria across northeast Oklahoma as we head towards the afternoon Cold front will move into northeast Oklahoma tonight. with breezy northwest winds ushering in cooler temperatures behind the boundary.
Along the lower TX Coast winds have increased to just under 20 knots but could increase above 20 knots later today. Changes to the weather will be coming Friday evening as a cold front pushes through the area with a line of showers/thunderstorms. Much cooler conditions are still expected for the weekend.
336 PM EST Thu Nov 17 2016 High pressure will prevail through late week.
At the same time, moisture will slowly begin to move northward ahead of a sharpening cold frontal boundary that is forecast to being moving into our area by early Friday. Showers and perhaps a few thunderstorms will be possible along or perhaps slightly behind the cold frontal boundary. The better shot of rainfall will be east of the Highway 65 corridor, however, at the very least, scattered activity is certainly possible area wide. As the cold front moves into the eastern Ozarks, timing does support a conditional strong storm threat from midday through mid-afternoon. Some locations that start out around 60 (or perhaps warmer) will likely drop off into the upper 40s by late afternoon/evening.
245 PM EST Thu Nov 17 2016 Warm and dry high pressure will hold over the region through Friday night.
A strong cold front will move into the area tomorrow, bringing gusty winds and chances for rain showers and thunderstorms.
212 PM MST Thu Nov 17 2016 Upper low progressing east across central Colorado this afternoon with snow expanding slowly across the CWA. Friday will be cool with clearing skies across the CWA as high pressure slides across the area into the central and southern plains.
Issued by National Weather Service Fort Worth TX 320 PM CST Thu Nov 17 2016 Afternoon water vapor imagery depicts a strong upper trough becoming negatively tilted as it progresses across the Central Plains. As a result, strong southerly winds will continue within the warm sector of this low with sustained winds around 20 mph and gusts up to 35 mph. In the wake of the cold front, temperatures will fall into the low 40s across western and northern OK Friday morning.
High pressure will persist across the eastern United States tonight through Friday night.
320 PM EST Thu Nov 17 2016 High pressure builds in from the west tonight and will crest over the region Friday night before moving slowly to the east.
/TW/ A sfc and mid-level ridge axis remains centered across the deep south with a trough axis pivoting through the Four Corners region. The ridge across the area will lead to another day of well above normal afternoon high temps, in fact a few locations will flirt with daily record high temps. The warm dry weather will lead to elevated fire weather concerns this afternoon, mainly across the NW Delta, where RH values will drop in the low 20s due to mixing this afternoon. /TW/ The combination of very dry soils, coupled with highs this afternoon topping out in the lower 80s, and afternoon minimum relative humidity values between 20%-30%, will lead to an increased threat for fire danger across mainly central and northern portions of the forecast area this afternoon.
100 PM EST Thu Nov 17 2016 Dry high pressure will extend into the area from the west through Friday with above normal temps.
420 AM CDT THU SEP 15 2016 Today through Friday night, Anomalous ridging over the ArkLaMiss region will maintain anticyclonic, subsident flow, and low level moisture divergence, thus limiting diurnal shower/thunderstorm coverage for most of the forecast area today.
432 AM EDT THU SEP 15 2016 High pressure across the eastern Great Lakes today will shift east Friday.
302 AM EDT THU SEP 15 2016 High pressure centered along the Ontario Quebec border will build southeast into New England through tonight before retreating offshore on Friday.
355 AM CDT THU SEP 15 2016 Massive high pressure that is covering the Great Lakes as well as Srn Ontario & Swrn Quebec is teaming with a weak low pressure trough situated across Ern CO to produce weak, moisture-laden E-SE flow across KS. With broad mid-upper ridging covering the Great Lakes the upper- deck wave should undergo modest cyclogenesis as it lifts slowly NE across the Dakotas today and tonight. The upper cyclone approaches the Great Lakes, the downstream ridge will deamplify & by Fri the cyclone should once again transition into an open wave. This would enable a se-moving cold front to venture into KS on Fri.
121 AM EDT Thu Sep 15 2016 Building high pressure will provide dry weather and seasonal temperatures until the approach of a weekend frontal system. High pressure will support dry conditions and seasonal temperatures today. As high pressure shifts east Friday, some moisture return on low-level easterly flow may bring a stray shower into the ridges Friday afternoon.
Mostly clear conditions and light winds will prevail as high pressure becomes established through the weekend. Drier conditions with a warming trend will be in store into the weekend as we transition from a broad troughing pattern to ridging aloft. As the upper ridge builds across northern California on Friday we will see a few degrees of warming each day with highs reaching back into the mid and upper 80s for western Nevada and upper 70s to lower 80s for the Sierra.