Aikyam-Lab/Synoptic-Bench huggingface dataset:
941 AM EDT Wed Jun 28 2017 High pressure over the region today will move off the coast tonight.
543 AM MDT Wed Jun 28 2017 Area will remain under the influence of an upper trough over Alberta through Thursday. Steepening lapse rates underneath cool air aloft will promote continued chances for shower and thunderstorm activity but think the wind threat will be a bit lower due to cooler temps and less of a T/Td spread in the BL. Some hail will be possible with the stronger storms as freezing levels lower and mid/upper tropospheric flow remains strong. Cooler and more stable air will filter into the area behind the front on Thursday night.
A period of dry and warmer weather is in store for the residents of eastern Kentucky today and tomorrow, as a ridge of high pressure settles over the region. High temperatures will return to closer to normal values today and tomorrow, with max readings in the low to mid 80s expected. Tonights lows will also be warmer, with ridgetop temperatures forecast to fall into the lower 60s, while the surrounding valleys bottom out in the upper 50s. Clouds will be on the increase Thursday afternoon, as an area of low pressure passes by to the south of the area.
Surface wise, a large area of high pressure is centered over the mid Atlantic States with a ridge extending southward into the Sunshine State and our region.
Increased high temperatures into the lower 80s across southern MN. The daytime period on Thursday looks to be dry as brief ridging sets in over the area.
The troughing pattern over Central and East TX will shift SEwd today as a mid-level ridge axis knifes east into North Central TX. A trough clipping across the Northern/Central Plains should increase southerly winds and raise min temps and heat index values for Thursday, but think the values will remain shy of heat advisory levels.
/issued 409 AM CDT Wed Jun 28 2017 by National Weather Service SAN ANGELO TX/ Upper level ridge centered over Baja will extend across the area the next several days.
Aloft, an upper level low moving east off the Texas coast will cause moisture aloft to increase throughout today across the Lower Mississippi River Valley. 5 inches near the Highway 82 corridor. As temperatures warm into the upper 80s and lower 90s, and combine with the influence of another upper trough lingering over the northern gulf, isolated to scattered showers and storms will occur this afternoon. The greatest coverage should be south of I-20, and closer to the Highway 84 corridor. Overnight lows will be rather mild in the lower 70s.
Aloft, a long wave trough exits New England with zonal flow across our region. With the precipitation and cloud coverage, cooler temperatures are expected for Thursday.
As the coastal trough meanders around and in from the coast expect the storms to continue develop and spread inland. Elevated tide levels will continue with the persistent coastal troughing. Rip current stronger today and probably begin to see some overwash on 87 near High Island during the high tide this afternoon with these same conditions tonight and Thursday.
This morning the area remains between an offshore ridge and a trough in Alberta which will keep a generally dry and stable weather pattern over the region today. Forecast high temperatures today looked a little low so have raised temperatures a couple of degrees, though it will still be a couple of degrees cooler than yesterday. Lows will be in the 50s in the lower elevations and in the 40s in the mountains.
411 AM PDT Wed Jun 28 2017 A weak ridge and onshore flow will keep a night through low cloud pattern across the coasts and valleys through the week.
Upper level low pressure over Saskatchewan and Alberta today digs into northeast Montana on Thursday. This brings colder air aloft to the region with moderate flow aloft but the boundary layer will be cooler. Will be a cooler day with highs in the mid to upper 70s. Presence of this moisture and cyclonic flow aloft behind the exiting upper low moving into North Dakota support additional shower and thunderstorm activity but weaker CAPE and higher shear limits the potential for strong updrafts and do not expect a lot of moisture from the storms. Thursday will be the coolest day of the week with highs in the lower to mid 70s.
High pressure is currently centered over the Appalachians. Highs will warm into the low to mid 80s this afternoon.
721 AM EDT Wed Jun 28 2017 High pressure will pass north of the region today, then shift into the Atlantic Thursday.
Troughing extends from New England southward along the eastern seaboard. Upper level ridging extends over the Bahamas westward through west central and southwest Florida and into the Gulf of Mexico. On the surface, subtropical high pressure near Bermuda ridges west-southwest over southern Florida. A weak frontal boundary over northern Florida washes out and dissipates as high pressure moves off the mid-Atlantic coast by Wednesday evening. Rain chances will be typical for the summer time with 40-60 POPs each day through the week, with the highest coverage over the interior counties.
Overall high pressure will still be in control of the region today and tonight.
/issued 456 AM CDT Wed Jun 28 2017/ Latest upper air analysis/water vapor satellite imagery depicted an upper level trof over E TX and into the NW Gulf. SFC to H7 analysis revealed an inverted trof axis stretching from SC LA across the NW Gulf to near the TX/MX border. Upper trof over E TX is forecast to remain quasi-stationary today while the low to mid level inverted trof axis sharpens a bit and becomes re-oriented in a more E-W manner over the Gulf waters and pushes inland tonight. Low/mid level trof axis and its associated MSTR pool will continue to lift off TWD the NE and begin to pull away from the area THU night, replaced by a low/mid level ridge and relatively drier air building into the northern Gulf.
1055 AM EDT Wed Jun 28 2017 High pressure remains in control today with abundant sunshine. High temperatures today should be generally about 5 deg F warmer than yesterday as the trough axis moves east and ridging builds in with warming 850mb temperatures. High pressure moves east of the region late today and tonight resulting in southerly winds and increasing moisture. Chattanooga Airport, TN 87 69 82 70 / 0 0 70 20 Knoxville McGhee Tyson Airport, TN 85 66 86 67 / 0 0 30 10 Oak Ridge, TN 85 65 86 68 / 0 0 30 10 Tri Cities Airport, TN 83 60 86 62 / 0 0 10 10.
1215 PM EDT Wed Jun 28 2017 Canadian high pressure will drift offshore the Mid-Atlantic coast tonight. High pressure will extend into the region from the east on Thursday.
Otherwise, the previous suite of TAFs remains largely unchanged, with surface and mid- level low pressure producing another round of convection this afternoon. Although the aforementioned 500 mb trough will persist on Thursday, the convection will decrease to more isolated levels as drier air begins to work into the region and precipitable water values fall to below two inches.
Ahead of the low an elevated axis of moisture and instability exists with PWats near an inch and a half and MU CAPES around 1000 J/kg. Temps will be highest in the west with more sun than clouds and cooler in the east ranging from near 70 under the clouds to near 80 in the west.
Onshore flow and mostly cloudy skies will lead to temperatures in the low to mid 80s for coastal areas, and mid to upper 80s inland.
950 AM EDT Wed Jun 28 2017 High pressure will maintain dry weather today. Dry weather and mostly sunny skies today as high pressure slides across the region.
NAM/GFS/ECM in agreement showing the stalled boundary slowly lifting across the CWA before washing out in the early evening before a cold front.
1005 AM EDT Wed Jun 28 2017 High pressure will pass north of the region this afternoon, then shift into the Atlantic Thursday.
944 AM MDT Wed Jun 28 2017 An upper level trough will continue to move east across the area today bringing a little cooler temperatures to the region. We did nudge winds up, mainly across the Western Magic Valley, as gradient tightens in northwest flow behind a weak cold front. Isolated showers and thunderstorms associated with an upper trough will continue mainly in SW Idaho this morning. Drier air will arrive with the passage of a cold front, except the isolated showers and thunderstorms may continue in the West Central Mountains east of McCall this evening. The upper trough will pass by to our northeast tonight and will be followed by a dry N-NW flow aloft on Thursday.
1033 AM CDT Wed Jun 28 2017 A few light showers remain in the east late this morning and should be dissipating by noon as the upper level low pressure area moves east. The low level jet and strong southerly flow persists along and east of the James valley, while to the west, northwest winds have developed out ahead of weak high pressure.
421 AM PDT Wed Jun 28 2017 A weak ridge and onshore flow will keep a night through low cloud pattern across the coasts and valleys through the week.
932 AM EDT Wed Jun 28 2017 Dissipating boundary across north Florida with high pressure moving across the eastern U. Can see this wind shift in the surface observations and visible satellite imagery as the low clouds are moving southwest across the Nature Coast into Polk County and east central Florida. East to northeast flow will become established across the northern waters today as high pressure well to the north builds south.
1225 PM EDT Wed Jun 28 2017 High pressure will move off the eastern seaboard later today setting up a warmer and more humid airflow beginning on Thursday.
1005 AM EDT Wed Jun 28 2017 Morning visible imagery shows some low level stratus/stratocu behind a weakening low level frontal trough that moved into central FL yesterday afternoon. NNE winds behind the trough feature will veer to onshore through late afternoon. Morning soundings indicate fairly high moisture levels continuing mainly in the low to mid levels with PWATs to 1. High resolution mesoscale guidance focuses greatest coverage of afternoon convection across srn sections ahead of the remnant frontal trough and also across the interior this afternoon. Plenty of moisture left behind from an old frontal trough will be available for scattered showers and thunderstorms, but with an inland propagating sea breeze during the afternoon.
With the centered subtropical ridge to the southeast and a weak trough to the west, the local area is situated in a region of deep and moist onshore flow. However, have lowered PoPs slightly over the eastern Big Bend, which is slightly less favored for precip in this low-level flow regime.
The low level jet and strong southerly flow persists along and east of the James valley, while to the west, northwest winds have developed out ahead of weak high pressure.
320 PM EST Thu Feb 8 2018 High pressure will skirt across the area over the next 24 hours, providing mostly clear skies and light winds. The period is expected to begin with a broad trough extending from central Canada south into much of the central and eastern Conus.
The arrival of a cold front tonight will produce colder temperatures Friday. Some areas may have hit their high temperatures this morning with the wind gusts, although temperatures will be running 5 to 10 degrees warmer than yesterday with widespread 50s this afternoon. Weak instability may lead to a small chance of showers in the KGEG-KCOE corridor to KPUW and KLWS between 21-01z ahead of a cold front.
Cold northwest flow remains in place across the region between departing low pressure moving into the Canadian maritimes and high pressure in the Tennessee Valley. A weak trough will move through this evening, with increasing moisture and lift with southwest flow making a band of lake effect intensify near the Saint Lawrence Valley and Watertown. As the trough axis passes this evening, the band of lake effect snow will realize a pure westerly, long-lake axis fetch combined with EQL levels 8-10kft under the trough axis. Snowfall amounts are likely to range from 4 to 8 inches in northern Jefferson and southern Oswego counties in the most persistent snows, with the highest amounts of 9 to 18 inches expected across the central Tug Hill.
Right now it appears that some freezing rain or drizzle may be possible. Sunshine today will help warm temperatures to just a tick below normal with highs expected to range from the mid 40s to the lower 50s. A low pressure system will develop over the Southern Plains on Friday.
Tonight the low level jet will ramp up across Illinois, tightening up the baroclinic zone along the Wisconsin/Illinois state line, and providing strong warm air advection.
Friday starts out drier than in the afternoon the next frontal boundary sags further south as a stronger upper trough approaches from the north. Mountain snow and valley rain should increase as this trough moves through WY and the jet drops down over the forecast area.
With that said, the highest winds we expect with the snow are 10-15 MPH overnight along the Iowa border, with speeds of 5 knots or less to the north.
Latest high-res model guidance shows this low cloud band press further S through the afternoon, then expand back toward the north Tonight as cold front stalls just S of forecast area and starts working back N as a warm front. For Friday, as WSW flow sets up aloft, warm front moves/redevelops northward across northern FL. Model guidance suggests good chance for fog and possibly isolated showers across the forecast area as warm front works northward.
1037 AM MST Thu Feb 8 2018 Northwest flow aloft will continue across the area today and tonight, while surface winds take on a w-sw component as lee trough deepens slowly along the I-25 corridor. Much Cooler and Unsettled Weather This Weekend.
337 PM CST Thu Feb 8 2018 A trough can be found over the Northern Plains.
Tonight, a large upper high west of California and an equally large upper low over northern Hudson Bay have directed a northwest flow over Montana. the frontal boundary between the Arctic air mass of the low and the warm air of the upper high will run from NW Montana to SE Montana.
Little change to sensible weather is expected Friday, though CAA will begin to sag into the UT/ID border region late in the day as the next weak trough approaches from the northwest.
The Highway 200 corridor between Clearwater Junction and Helmville and from Garrison Junction to MacDonald Pass could get quite difficult this evening as the snow bands coincide with the arctic air.
1231 PM EST Thu Feb 8 2018 Dry high pressure will build into the area today and tonight. Moisture will increase again Friday ahead of a warm front.
1250 PM MST Thu Feb 8 2018 High pressure will continue to hold in place the remainder of the week resulting in above normal daytime high temperatures.
With high pressure right over top of us, it will be a sunny day with highs topping out in the lower 40s to near 50. Products were updated to take out the morning freezing fog wording. High pressure currently centered near CKV will allow for VFR conditions at all terminals for the taf period.
136 PM EST Thu Feb 8 2018 High pressure tonight and Friday. A warm front will produce considerable mid to high clouds across the region tonight, making low temperatures a bit tricky. The warm frontal clouds will persist on Friday over central and northern portions of the forecast area. Dry air in the low levels should help prevent precipitation from reaching the ground, but can't rule out a few flakes making it to the ground across the northern counties. High pressure to our east will provide weak pressure gradient and calm to weak sfc southerly flow through tonight. Winds at H850 will increase from the southwest to 30 knots bringing relatively warmer air. These conditions will provide comfortable temperatures Friday mainly in the mid to upper 50s, but dropping near freezing once again late Friday night.
144 PM EST Thu Feb 8 2018 Dry high pressure will build into the area today and tonight. Moisture will increase again Friday ahead of a warm front.
Very cold low temperatures expected again tonight and utilized some of the lower guidance. Another wave propagating through the deep upper trough does clip the far southwest.
301 PM CST Thu Feb 8 2018 The PAH forecast area will remain dry through Friday as high pressure continues to push off to our east. Models continue to bring a cold front south across our region Friday night, and linger it just southeast of our region through the weekend. Moisture moving northward, along with areas of low pressure moving along the front, will keep us in a wet pattern.
Snow showers driven by steep low level lapse rates are starting to wane from southwest to northeast as high pressure builds in, allowing temperatures to warm aloft and decrease instability.
1225 PM EST Thu Feb 8 2018 High pressure builds in today. Lingering weak upslope snow showers and flurries will come to an end this morning with high pressure system building in. High pressure to our east will provide weak pressure gradient and calm to weak sfc southerly flow through tonight. Winds at H850 will increase from the southwest to 30 knots bringing relatively warmer air. These conditions will provide comfortable temperatures Friday mainly in the mid to upper 50s, but dropping near freezing once again late Friday night.
213 PM EST Thu Feb 8 2018 High pressure will build north of the area tonight and gradually slide offshore Friday.
Limited moisture may produce a few showers today, mainly over the higher elevations of the West Central and Boise Mountains of Idaho. Cooler conditions expected on Friday in response to a cold front moving through the area.
307 PM CST Thu Feb 8 2018 A south wind will remain somewhat breezy tonight, which will result in warmer and more uniform overnight low temperatures that last night. The temperature forecast for Friday will be rather tricky as a strong cold front is expected to move across Oklahoma and north Texas.
356 PM EST Thu Feb 8 2018 Low pressure will move across northwest Ohio Friday, bringing a warm front north to Lake Erie and then sliding the cold front across the area late Friday night.
856 AM PST Thu Feb 8 2018 High pressure will create quiet and warm weather conditions through tomorrow.
322 PM CST Thu Feb 8 2018 Synoptic pattern late this aftn was composed of UA ridging across the western CONUS, UA troughing across the Great Lakes region, and thus dry west-northwest flow aloft across the Four-State Region. Warm moist air running atop of a cooler and moist airmass will result in an overrunning scenario and thus, the development of isolated to scattered rain showers. Tomorrow night, an UA trough across the Pacific northwest will dig east-southeast to near the Four-Corners Region and promote sharpening southwest flow aloft.
346 PM EST Thu Feb 8 2018 High pressure lingers over the area through tonight, then gradually slides off the coast on Friday. High pressure over the area this afternoon with linger through tonight. The period begins with high pressure and dry weather on Friday, but that is short-lived as the next southern stream system lifts north and collides with strong high pressure over the western Atlantic.
Temperatures are on track to remain in the lower to mid 20s this afternoon.
1234 PM EST Thu Feb 8 2018 Dry high pressure will build into the area today and tonight. Moisture will increase again Friday ahead of a warm front.
This increase in moisture in the mid and upper levels is associated with a weak cold front. South of the front, over our CWA, broad high pressure has allowed for good subsidence and warming. Maximum temperatures are currently maxing out in the low 80s along the east coast metro region and mid 80s further inland.
318 PM EST Thu Feb 8 2018 High pressure will shift offshore Friday morning.
1144 AM CST Thu Feb 8 2018 High pressure continues over Arkansas this morning. As the high moves east this afternoon and tonight, winds will turn to the south and southeast. Light winds and dry air have allowed temperatures to fall below freezing statewide with northern areas seeing lower 20s to teens in outlying areas. The ridge will begin to drift east throughout the day and southerly winds will return nearly statewide by this afternoon. Expect high temperatures to remain in the 40s across eastern areas closer to the ridge, while western parts of the state will likely climb into the 50s to near 60 degrees. Overnight lows will be some 5- 10 degrees warmer than this morning. Additionally, a new cold front will approach from the north and will introduce much colder air to northern parts of the state.
140 PM EST Thu Feb 8 2018 High pressure will build in from the west today and will shift offshore Friday morning.
Generally expect to see a trend over the next 24 hours of increasing moisture levels and more clouds across the entire area as high pressure moves off to the east and onshore winds make their return.
343 PM CST Thu Feb 8 2018 After a nice day today, we should see one more tomorrow afternoon as a westerly wind develops ahead of the next cold front to move across the area. The west wind will help to boost highs a few degrees over today across the southern half of the forecast area, but the northern half will depend on when the first push of the cold front will arrive.
Satellite shows some mid decks rounding the base of the mean upper trof, and producing a little flurry activity into central IL. We'll be warm enough in most places for all rain, but our northwest most counties will be at or just below freezing, so a brief period of freezing rain is possible there.
Temperatures will be warmer tonight as a southerly LLJ develops and increases up to 25 knots by sunrise, with lows only in the upper 20s and 30s.
Looks like an overall dry next 18 to 24 hours across the forecast area as high pressure remains in control. This will be shortlived though as a warm front lifts north Friday afternoon. Synoptically, rain will driven by the warm front, but questions revolve around how much precipitation will reach the ground given the drier airmass in place and exactly how strong will the lift be during the afternoon and early evening.
The brief warming will soon come to an end, however, as a cold front sweeps through the area late tonight over northwest Missouri.
154 PM CST Thu Feb 8 2018 Underneath weakish mid-level flow on Fri the thermal ridge will remain anchored to the w. Cold front will make its surge s between 09Z-12Z Sun AM and by 21Z 85h temps across PB (possibly SE NM) will be 0C or less. Turning warmer Mon-Wed with sw flow aloft.
1135 AM CST Thu Feb 8 2018 Warm air aloft is spreading across wrn and ncntl Neb this morning and should continue throughout the day before a strong arctic cold front arrives this evening. The light radar returns represent the warm front and the model consensus suggests the potential for some light snow or rain across nrn Neb today. It was the coolest model and this solution is consistent with strong arctic cold fronts which tend to out-race the models at night. The GFS one hour data was the basis for freezing rain and sleet along and just behind the arctic front.
A pre- frontal trough and cold front will begin veering winds around to the northwest and eventually northeast by the end of this TAF cycle. KGUY could see increasing low/mid clouds after sunrise Friday depending on how fast the main cold front advances south, but confidence is not high enough to include in TAFs at this time.
Latest WV imagery shows a broad trough over the eastern CONUS, and this has allowed drier air to filter southward over the region. Vsbl stlt shows the bulk of the low level moisture now over the coastal waters, with just some thin cirrus streaming over the area. Temperatures were rather chilly this morning with lows near freezing acrs cntl LA to around 40 along the I-10 corridor. Temps have since risen to the lower to middle 40s and are on track to reach highs near 60 later today. /issued 322 AM CST Thu Feb 8 2018/ Wx map shows cold front well south of the coastal waters this morning, with high pressure building southeast across the midwest.