Aikyam-Lab/Synoptic-Bench huggingface dataset:
848 PM CDT Mon May 8 2017 The upper level ridge is still in place over the area but will shift off to the east late Tuesday. Low level moisture has streamed in from over the Pacific ocean and Mexico causing overnight temperatures to be warmer than previous nights. Overnight low temperatures will be in upper 50s in eastern half of the ArkLaTex while east texas region will be in the lower 60s. The deep east Texas region is warmer due to the aforementioned low level moisture that is currently in place.
1152 PM CDT Mon May 8 2017 Latest water vapor satellite imagery shows upper level closed low over the southwest United States/northeast United States and upper level ridge over the central United States. First pieces of energy ejecting out of the closed low over southwest United States is overtopping the ridge and producing a cluster of showers/thunderstorms over eastern North Dakota per latest mosaic radar.
The low pressure system currently over northern Baja California will continue to bring unsettled weather as far north as the Great Basin through midweek. High pressure aloft will develop across the region from the west beginning midweek.
630 PM CDT Mon May 8 2017 Updated aviation section for 00z taf issuance Early this afternoon, a warm front was between KMVN-KMDH, extending southeast to just north of K2I0.
Chattanooga Airport, TN 74 56 75 48 / 20 10 20 80 Knoxville McGhee Tyson Airport, TN 70 56 74 46 / 30 20 20 80 Oak Ridge, TN 68 56 74 44 / 30 20 20 80 Tri Cities Airport, TN 66 51 73 45 / 30 30 20 80.
The nearly flat northern periphery of large warm core ridging centered near Guadalajara, MX, reaches much of Texas and the other Northern Gulf Coast States, with the eastern periphery of the ridging reaching near the Western Florida Peninsula. A slowly moving cold frontal boundary is located from near the Delmarva Peninsula southwest to Central Texas. Surface ridging will remain in place across Central Florida and middle level dry air mixes down this afternoon, allowing for PWAT to fall below 1. High temperatures will have no trouble reaching the lower to middle 80s.
Winter weather headlines have expired at 10 am with temps at or above freezing areawide.
/Issued 434 AM CDT Mon Apr 2 2018/ Latest radar trends are showing an increase in freezing drizzle across parts of northeast Oklahoma over the past hour or so, including in some places to the north of the winter weather advisory. Travel impacts are expected to be minor, but a few slick spots on bridges and overpasses will remain possible. Have cancelled a few counties out of the freeze warning, as temperatures have nudged above freezing in some places.
Removed mention of patchy freezing drizzle. Continuing with the current forecast that trends a bit more toward the NAM and HRRR with cooler temperatures. This will likely be short lived as moisture shifts back west this evening ahead of a cold front. Strong cold front will pass over KWWR toward end of forecast period bringing strong north winds and clearing skies. /issued 436 AM CDT Mon Apr 2 2018/ Freeze warning was expanded southward to include areas that are near and below freezing this morning.
If you're a weather weenie, you know mid-60s dew points ahead of a cold front this time of the year means good surface instability with which to work.
1038 AM EDT Mon Apr 2 2018 Weak high pressure will bring dry conditions today. Showers will return tonight as a warm front brings warmer temperatures. A cold front will sweep through the area Tuesday night bringing a line of thunderstorms and a return of below normal temperatures. In response to the digging energy a warm front and isentropic lift begins to develop in Kentucky and lifts north over the entire region. The cold front is forecast to swing through the region Tuesday night.
1136 AM EDT Mon Apr 2 2018 Warm front lifts north across the area through tonight.
1005 AM EDT Mon Apr 2 2018 RAP40 analysis shows a broad, albeit weak, H100-H70 anticyclone axis extending from Bermuda into the NE GOMex, generating a light E/SE breeze south of the I-4 Corridor, veering to a light S/SW breeze north of I-4. Position of the anticyclone is blocking out any meaningful dynamic mid/upr lvl support. H100-H70 mean RH lvls are high enough to provide the buoyancy necessary to generate precip, but the lack of instability and mid lvl suppression generated by the anticyclone will limit both overall coverage and potential. Weak/broad ridge axis extending from Bermuda into the NE GOMex will generate a light to gentle S/SE breeze over the lcl Atlc.
The marine layer will thin into midweek, resulting in fair and warmer days west of the mountains.
940 AM CDT Mon Apr 2 2018 Water vapor imagery shows zonal flow aloft over the region this morning, with a weak cold front sagging over the region. The weak cold front is currently along the Arkansas and Louisiana border back towards Marshall and Jacksonville, Texas. Otherwise, expect relatively mild conditions to prevail across our northern areas, with warmer than normal and somewhat muggy conditions prevailing across the southern areas. Main forecast concern for this forecast period will be with the threat of severe weather for Tuesday afternoon and evening, as a more potent cold front moves through the region.
This will likely be short lived as moisture shifts back west this evening ahead of a cold front. Strong cold front will pass over KWWR toward end of forecast period bringing strong north winds and clearing skies. /issued 436 AM CDT Mon Apr 2 2018/ Freeze warning was expanded southward to include areas that are near and below freezing this morning.
However, readings in the lower 90s will be common across the lower deserts the remainder of the week.
High pressure over the region will keep winds and seas low through the next several days.
Temperatures, which largely struggled to get to the freezing point in the first place, will creep up through the day, exacerbating snow melt. Tuesday will see rain showers and temperatures climbing to above normal with strong warm advection and a warm front lifting north over the area in the morning.
A strong cold front crosses Tuesday night, which will bring rain, gusty winds, perhaps a rumble of thunder, then snow to the area. Temperatures, which largely struggled to get to the freezing point in the first place, will creep up through the day, exacerbating snow melt. Tuesday will see rain showers and temperatures climbing to above normal with strong warm advection and a warm front lifting north over the area in the morning.
Daily temperatures will be near to slightly above normal early in the week, becoming even warmer for the latter half of the week.
MVFR and lower flight categories out there this morning will begin to trend upward for most terminals throughout the period as a warm front lifts north across the state. KHRO/KBPK will take longer to improve given that they will be the last sites to see the warm frontal passage. Given the progression of the warm front, temperatures will continue to vary widely today and will moderate further through the evening and overnight hours in many spots.
1137 AM EDT Mon Apr 2 2018 Warm front lifts north across the area through tonight.
/issued 342 AM CDT Mon Apr 2 2018/ Warmer conditions as advertised for this morning with temperatures over land zones in the 60s. Marine air temperatures were noted to be in the lower 70s. A warmer day is on tap for the area as southerly winds continue to feed in additional moisture with clouds holding in place. a cold front has stalled across central and northeast Texas this morning.
633 AM CDT Mon Apr 2 2018 Mid level impulse extends into western ND ahead of approaching trough (currently over northern ID), and combined with 850mb frontogensis max is responsible for development of light to moderate snow upstream from our CWA and this is shown on radar to slowly track eastward.
The overall synoptic pattern will remain fairly stagnant today with zonal flow aloft and high pressure influencing conditions at the surface. Though much of the region will be greeted by fog and low clouds this morning, temperatures will quickly rise into the low to mid 80s for afternoon highs once the morning fog/low stratus mixes out.
/issued 431 AM CDT Mon Apr 2 2018/ SHORT TERM (Now through Tuesday): 500mb ridge just to our south over the Bay of Campeche along with very dry air above 850mb will maintain hot and dry conditions Monday. Temperatures yesterday reached the upper 80s in the Lower RGV to around 100F near Falcon Dam, so highs today were raised several degrees due to persistence and models indicating slightly higher 1000-500mb thickness values this afternoon. The pressure gradient will weaken some as winds shift to the west northwest ahead of a cold front, however, winds could still gust up to 30 MPH across the Rio Grande Valley in the afternoon.
Mid level impulse extends into western ND ahead of approaching trough (currently over northern ID), and combined with 850mb frontogensis max is responsible for development of light to moderate snow upstream from our CWA and this is shown on radar to slowly track eastward.
Warm afternoon temperatures in the low/mid 80s, and cool sea surface temperatures over the Atlantic will allow a strong sea breeze to develop.
411 AM PDT Mon Apr 2 2018 High pressure will provide for mainly clear skies and above normal temperatures across the area through the middle of the week.
800 AM EDT Mon Apr 2 2018 High pressure will build across the region today into Tuesday. Low pressure will also track well south of the area today.
Temperature trends remain on track as most areas will see highs in the low 80s by mid-day.
High pressure should bring generally dry conditions today through Tuesday. Still, most of the lowlands should be partly to mostly sunny, with highs around 50.
639 AM CDT Mon Apr 2 2018 Cold high pressure was moving across northern Missouri early this morning bringing below freezing temperatures to the region. This high will move east of the area through this morning allowing winds to shift out of the south and aid in bringing warm and moist air back to the Ozarks this afternoon and evening. An isolated severe storm may also be possible, especially as the low level jet noses into the area from 4-10pm this evening. The storm system will be approaching the region around sunrise Tuesday morning with a cold front sliding into eastern Kansas through early morning. The cold front will not take long moving through the area as is should be well east of the Ozarks before the sun sets Tuesday.
Radar/obs trends show precip coverage continuing to decrease, as an upper level trough exits to the east. Cool temperatures will prevail today with highs in the upper 40s to mid 50s for the lower elevations and 30s to lower 40s for the mountains.
954 AM PDT Mon Apr 2 2018 A vigorous low pressure system will bring rain and snow showers to the Idaho Panhandle and the Cascades today.
Still expect a surface boundary near the Alabama border to move northward as a warm front this afternoon, likely reaching the I-40 corridor by 21z or so.
Mostly sunny skies across southeast Arizona this morning with the upper air pattern featuring a weak elongated trough just to our west that will be pushing across into the forecast area later today and this evening.
Gusts will drop off between 03Z and 08Z but pick back up early tomorrow morning behind a cold front that swings winds northerly. For today, a sfc trof will deepen rapidly along the eastern slopes of the Rockies. The overall strongest southwest winds are expected to occur over the western half of the area where the highest terrain is found. The associated strong sfc cold front will blast southward across the OK and TX Panhandles late tonight and early Tuesday morning with strong north winds and sharply cooler temperatures in its wake.
1030 AM EDT Mon Apr 2 2018 High pressure will build across the region today into Tuesday. Low pressure will also track well south of the area today.
1254 PM EDT Mon Apr 2 2018 VFR conditions are expected through this evening, but lowering and thickening clouds will bring MVFR conditions overnight with eventual IFR cigs/vsbys as showers overspread the area north of a warm front. Low cigs and periods of rain showers will persist throughout the day Tuesday as low pressure tracks along the aforementioned frontal boundary. For the most part, convection should remain elevated above the strong warm frontal inversion, yielding downpours and small hail as the primary threats. Surface ridging anchored over the region today will maintain generally lighter winds from the south, averaging 15 knots or less. Winds become northeasterly tonight and then strengthen heading into Tuesday as low pressure tracks toward the region.
/issued 416 AM CDT Mon Apr 2 2018/ Temperatures have really cooled off behind yesterdays cold front that has settled along the eastern slopes of the higher terrain this morning. A strong cold front will surge south across our area as the trough axis passes.
Chattanooga Airport, TN 46 60 38 64 / 30 0 0 0 Knoxville McGhee Tyson Airport, TN 44 58 34 62 / 30 0 0 0 Oak Ridge, TN 45 58 34 61 / 30 0 0 0 Tri Cities Airport, TN 38 56 30 60 / 50 0 0 0.
My east and north central will remain cloudy, still some question how far west the low clouds will develop tonight with high res models showing a variety of solutions at the moment. Thursday night a band of light precipitation will form in a weak baroclinic zone across southwest into North Central North Dakota, along the leading edge of a cold front. Sounding analysis confirms at least a potential for mixed precipitation with rain, freezing rain and possibly some sleet and snow all possible. However this should be very brief and light so see little consequence to any freezing precipitation.
906 PM EST Wed Nov 15 2017 Light rain will accompany a cold front across the Upper Ohio Valley Region tonight. The 500 mb trough axis will cross on Thursday, with northwest flow/lake enhanced showers continuing. Any shower activity will end Thursday evening as the trough lifts out.
An additional push of cooler and drier air will arrive this evening, as a 1017 mb pressure ridge drops into MO.
Canadian high pressure was building in from the northwest, which will keep the weather quiet through at least Thursday. South winds return on Thursday as high pressure advances off to the east within the fast zonal flow aloft. Highs Thursday will range from the middle 50s to the middle 60s, with the warmer readings in far southwest Missouri.
305 PM MST Wed Nov 15 2017 Current surface analysis shows frontal boundary nearly stationary across the area, from far northeast WY to south central SD, with high pressure over south central Canada. Upper level analysis shows trough over the Great Lakes region, with ridging over the Rockies, and a low off the Pacific NW coast. Skies are partly cloudy to mostly sunny across the area as some high clouds spill over the ridge.
drier air continued to filter into the region with dewpoints in the low/mid 30s across Northeast Oklahoma to the mid/upper 50s near the Red River. Drier air underneath the passing cirrus clouds should allow for temps overnight to fall into the 30s with the normal cool spots perhaps getting into the lower 30s. Temperatures in the 40s look possible between Interstate 40 and the low clouds.
555 PM CST Wed Nov 15 2017 A cold front continues to work its way through the state but will eventually stall out over southern sections.
752 PM EST Wed Nov 15 2017 Rain free conditions persisted across the western half of the Florida Peninsula today, as high pressure holds northwest of the area. High pressure north of the waters will shift east through the rest of the week, with north-northeast winds tonight shifting to more easterly by the weekend.
As of 21z, the high was centered around TIF-BBW, creating southerly flow in the panhandle and northerly across central Neb. A low coming off the Rockies deepens, lowering the MSLP to 1012mb near CDR while the high maintains 1024mb at OMA. The H85 ridge axis also pushes east during this time, and flow approaches 50kts by 12z. Made little change to min temps as weak WAA keeps H85 temps above freezing and previous forecast lows were above guidance. Did bump up Thursday highs as the stout H85 thermal ridge approaches and pushes temps toward 15C west and north.
Due to the drier air mass and radiational cooling lows tonight dip into the lower 30s and upper 20s. By tomorrow morning the southeast winds increase as the high pressure progresses eastward. Zonal flow aloft and the lack of any arctic air the highs reach the 50s.
635 PM EST Wed Nov 15 2017 Showers this evening, with cold front crossing tonight. High pressure crosses Thursday night.
Stronger mid-level winds also farther north with high wind threat looking lower for northern Carbon county so opted to drop that area from the high wind watch, but still some gusty winds expected during the day in that area.
656 PM EST Wed Nov 15 2017 High pressure will move off the New England coast today.
The boundary seems to stall and almost wash out through Thursday, with clouds lingering and the cooler air remaining north.
1024 PM EST Wed Nov 15 2017 High pressure will move off the New England coast today.
/issued 259 PM EST Wed Nov 15 2017/ An area of high pressure located over the eastern United States will remain in place tonight allowing for a breezy east to northeasterly wind flow to continue across South Florida. Low temperatures will range from the lower 60s across the northwestern interior sections to the lower 70s across the east coast metro areas. High pressure will continue to be the dominant feature which will allow the breezy east to northeast wind flow to continue. High temperatures across the region will range from the upper 70s to the lower 80s through the end of the week. As the weekend approaches, both of the GFS and the ECMWF show a stronger frontal passage through the region which will bring drier and cooler air to South Florida.
A cold front will exit the area tonight as low pressure moves through the Great Lakes.
Mostly zonal flow aloft across Texas presently with mid level ridging across the intermountain west/northern high plains with a shallow trough across the Midwest. This Midwest trough will help send a weak cold front into south-central Texas later this afternoon before stalling and eventually washing out by Thursday afternoon.
840 PM EST Wed Nov 15 2017 Cooler air will continue to settle across the region tonight.
High pressure returns late in the week for a dry weekend.
446 PM MST Wed Nov 15 2017 W-SW flow aloft expected to turn a little more southwesterly and increase in velocity Thursday ahead of approaching Pacific trough.
A cold front is approaching from the northwest but this next front is expected to stall acrs cntrl La and se Tx tmrw morning.
Highs will be about 5 to 8 degrees warmer for most areas, except only a few degrees warmer from Hays to Medicine Lodge where mixing will be shallowest.
/Issued Issued by National Weather Service ALBUQUERQUE NM/ Temperatures have been up to 20 degrees cooler today in the wake of cold front overnight.
1043 PM EST Wed Nov 15 2017 An upper-level composite analysis across the region this evening reveals a lower tropospheric anticyclone centered roughly over South Texas, with a weak ridge extending eastward along the northern Gulf coast.
A few flurries linger, but most of the more significant snow showers and freezing drizzle have ended. Looking on satellite, there are still some patches of clouds under the high, and many of the short range models have lingering clouds over the CWA overnight. Warmer air moving in will be tempered by clouds, kept highs in the 30s for now. A warm front will move into the area from the southwest Thursday overnight increasing moisture and the chance for light precipitation. Ahead of the warm front, cold temperatures below freezing will be in place. However weak forcing for ascent is expected with this warm front leading to only light precipitation.
532 PM CST Wed Nov 15 2017 A cold front currently across interstate 20 will allow for light and variable winds across many of the TAF sites this evening. High pressure behind the front to bring NE winds around 5 to 8 knots overnight into Thursday. /issued 411 PM CST Wed Nov 15 2017/ A weak cold front is just beginning to enter our far northwest zones in Southeast Oklahoma. The line of showers and isolated thunderstorms that had developed along a pre-frontal trough from Southeast Oklahoma, through Arkansas, and into the Ohio River Valley has almost entirely dissipated.
Satellite shows some erosion of this layer across the western two thirds of Clay County, with HRRR showing further significant erosion of the layer from north to south between 10 pm and 1 am as coastal trof along NE FL slips further south along to the east central Florida coast. The inverted trough over the coastal waters will keep an enhanced pressure gradient through this evening, with winds diminishing slightly overnight as coastal trof starts to slip southward overnight. During the overnight hours, higher level cirroform clouds are expected to into the region associated with the passage of the upper level short wave trof moves through the region overnight. Cirrus will exit NE FL during the early daylight hours as short wave trof moves into the adjacent Atlantic.
537 PM CST Wed Nov 15 2017 A broad area of high pressure will sink southward across the eastern portion of the region tonight. A developing low pressure system west of the region will strengthen the pressure gradient after 6Z with winds becoming southerly over the western CWA. The low pressure system will reach western SD by 18Z with strong southerly winds expected for this CWA. The highest winds should occur between the Missouri and James River around 15Z, then the James Valley eastward between 18-21Z. With 925 mb temps around 0Z in NE SD should produce temps in the upper 30s, to the lower 40s.
a weak CAD event/elongated area of ridging is occurring on the leeward side of the Appalachians. however just upstream is the next cold frontal system. thicker mid and lower level clouds are enroute along and just ahead of the cold front system that currently stretches from Lake Superior into the Southern Plains /as of 19z/. The cold front is expected to traverse the CWA overnight tonight into early Thursday morning.
/issued 234 PM CST Wed Nov 15 2017/ (Tonight and Thursday) Fast zonal flow will continue to result in a fast warming trend after the cold frontal passage. By Thursday noon, the clouds should erode from west to east, allowing the high temperatures to climb into the lower and mid 70s.
431 PM MST Wed Nov 15 2017 No problems expected this period with ridging aloft and at the surface resulting in mostly clear skies and light winds.
High pressure will shift east tonight as an upper low and associated trough approach the Pac NW. The aforementioned low and trough begin to move into the Pac NW tomorrow with heights lowering over the area through the day.
921 PM EST Wed Nov 15 2017 A cold front will cross much of the region overnight, and then move east of the Chesapeake Bay Thursday morning.
/ISSUED 352 PM CST Wed Nov 15 2017/ Thickening cloud cover situated south of weak mid-level troughing and downstream of a west central Texas stationary surface boundary. Most of the day will be spent in the 70s with mid afternoon temperatures nearing the lower 80s once again. Texas falls on the eastern side of the southern-based 5H ridging (westerly flow aloft) and. with high pressure moving across the Ohio River Valley tomorrow maintaining near 1.
The highest chances of IFR conditions (and maybe even some LIFR) will be at GLH/GWO and PIB/HBG. The boundary seems to stall and almost wash out through Thursday, with clouds lingering and the cooler air remaining north.