Aikyam-Lab/Synoptic-Bench huggingface dataset:
828 PM MDT Tue Mar 13 2018 Upper ridge and dry airmass continued over the forecast area this evening per water vapor imagery. Tomorrow an initial wave energy moving through during the afternoon bringing some snow showers to the mountains, and some rain to the lower elevations.
/22/ Tonight through Wednesday night: Latest RAP and satellite imagery showed a broad upper trough in the mid to upper levels of the atmosphere, which was providing cold air advection in northerly flow to the region. This is the area that has the best chance of dipping below freezing for at least several hours. Highs will range from the middle 50s north to the lower 60s south. Minimum humidities will dip in the lower to middle 20s, but light winds and recent rainfall will limit fire danger issues. There will be some potential for freezing temperatures in our eastern counties for Wednesday night. Lows for Wednesday night will range from mainly the lower 30s east to the upper 30s west.
514 PM MDT Tue Mar 13 2018 Latest upper analysis shows a high amplitude upper ridge over the Rockies and the high plains. At the surface, most of the great plains are under the influence of high pressure, creating southeasterly winds over the forecast are tonight. The upper ridge will be located over the forecast area on Wednesday, bringing mostly sunny skies and warmer temperatures.
812 PM EDT Tue Mar 13 2018 No significant weather concerns as high pressure builds over the area bringing clear to mostly clear skies through the period. /issued 413 PM EDT Tue Mar 13 2018/ Latest WPC analysis shows a deep low pressure system off the coast of Massachusetts with an associated cold front extending southward down the mid-Atlantic. The aforementioned northerly flow has also managed to bring in a cooler airmass, as maximum temperatures have struggled this afternoon to reach the low to mid 70s across much of the area.
These counties should remain several degrees above freezing and will not meet Freeze Warning criteria. Wednesday will be continued cool with high temps a few degrees cooler than Tuesday under sunny skies. Given low temperatures expected to be right around freezing. As upper ridge passes, low level warm/moist advection will kick in quickly with shot of precip likely Fri night.
Chilly overnight lows expected once again, ranging in the low to mid 40s for much of the area and even upper 30s over normally colder locations across the interior. Winds over the waters will be light and somewhat variable through late evening, ahead of an approaching reinforcing cold front.
848 PM EDT Tue Mar 13 2018 Intense low pressure east of Cape Cod will move northeastward in to the Canadian Maritimes tonight. High pressure will build southward into the central U.
/Issued 315 PM CDT Tue Mar 13 2018/ Water vapor imagery continues to show a couple of weak disturbances moving down the back side of the trough this afternoon, with one currently over Oklahoma and the other moving into Kansas. Temperatures are also trending a few degrees warmer than this time yesterday afternoon, with most locations expected to top out in the mid to upper 60s today. Dry conditions will continue to prevail the next several days, as high pressure builds back across the region.
708 PM CDT Tue Mar 13 2018 For the 13/00Z terminal forecast will prevail VFR under the influence of high pressure on the surface and aloft through the forecast period.
321 PM EDT Sat Sep 2 2017 Low pressure will approach from the southwest tonight and will lift northeast through the region Sunday and Sunday night.
322 PM EDT Sat Sep 2 2017 With northwest flow aloft and high pressure continuing to build into the region at the surface, dry and cooler weather will persist through the short term.
151 PM MDT Sat Sep 2 2017 Large upper level high pressure is sprawled over the Great Basin and Central Rockies. Subsidence and dry air on its eastern half over our region is inhibiting any vertical growth to the diurnal cumulus forming over the mountain ridges so far early this afternoon. No other noticeable changes expected through Sunday night as high pressure remains firmly in place. High temperatures on Sunday will likely be a degree or two warmer than today and close to record highs.
239 PM MDT Sat Sep 2 2017 Broad high pressure aloft over much of the Western U. The airmass will remain mainly dry with even warmer temperatures expected on Sunday. Continued dry and warm conditions will continue Sunday night across the area under the influence of the upper ridge over the Great Basin and into UT.
311 PM MDT Sat Sep 2 2017 Upper-level ridging will continue to strengthen across the central Rockies on Sunday, giving way to a continued period of hot and dry conditions for southeast WY and the western NE Panhandle.
High pressure and drier Sunday through Labor Day. Strong cold front midweek. A continuation of the high PoP low QPF weather as Harvey continues to dissipate over the area. Temperatures will remain cooler than normal. High pressure and ridging start to build into the region on Sunday and will persist through the remainder of Labor Day Weekend.
Well above normal temperatures will return today as a ridge of high pressure builds over the Northern Rockies. The high pressure will remain in place tonight through tomorrow.
209 PM CDT Sat Sep 2 2017 Water vapor reveals a well defined shrtwv trof and a 5h 30-35kt speed max dropping s into the S Plains. Said shrtwv trof will continue to move s or even sw into Sun and this along with a hint of the surface boundary INVOF I-10 there will still be a few tstms possible across SE PB/Lower Trans Pecos Sun PM. In the meantime, however deepening mid level cyclonic flow encompassing the cntrl/nrn plains driving a cold front s. Cooler wx will follow Wed with highs mostly in the 80s.
141 PM EDT Sat Sep 2 2017 A weak cold front over the LowCountry will move to the coast tonight.
153 PM EDT Sat Sep 2 2017 Mainly dry and cool this afternoon, as high pressure gives way to increasing clouds. Rain, associated with the remnants of Harvey and a passing cold front, will spread across central New York and northeast Pennsylvania tonight into Sunday.
This same low- level ESE flow has kept low clouds and drizzle fairly pervasive in the ridges through the afternoon. The low level center of Harvey will be continuing to weaken as it moves northeastward from its current location back toward central Kentucky toward our CWA. Drier air will start to move into Ohio by morning as high pressure and northwesterly flow will follow said wave. Fries Layer moisture is set to decrease markedly during the day on Sunday with further decreases likely into Labor Day as high pressure moves toward the central Appalachians.
Lows will be in the low 40s over the interior W to the low 50s elsewhere. This would favor a round of showers and thunderstorms moving through late Sun night/early Mon with the fropa mainly over the northern tier counties, and a more optimistic Labor Day fcst with a limited risk of more shower development in the wake of the cold front. With mid-upper level trough amplifying thru the Great Lakes, much cooler/fall conditions will follow Tue under nw to n winds/mostly cloudy skies and isolated/scattered showers. Models finally trend toward drier and warmer conditions on Fri as the mid-level trough shifts e and heights rise. As a cold front pushes into western portions of Upper Michigan, scattered showers and thunderstorms will be possible this afternoon.
330 PM EDT Sat Sep 2 2017 A weak cold front will push through central NC overnight.
high pressure will keep VFR conditions through the rest of the TAF period.
If the high resolution solutions are reality, dry conditions will occur Sunday morning, then another round of showers/tstms west of Tucson Sunday afternoon.
Most locations will reach the low 90s for high temperatures Sunday which would be one of the few days of the last several that we've been above normal.
325 PM EDT Sat Sep 2 2017 Aviation A weak cold front will bring increasing clouds tonight along with a few light rain showers.
307 PM EDT Sat Sep 2 2017 A wedge of high pressure extending into NC from the north will slowly give way this afternoon. A weak cold front will push through the region this evening and overnight.
631 PM EDT Sat Sep 2 2017 Low pressure will approach from the southwest tonight and will lift northeast through the region Sunday and Sunday night.
By tonight, weak cold front to move into region and slide south across area. Period begins with a weak fnt exiting the CWA and the 850mb thermal ridge building into the area. With swly winds increasing, especially on Mon ahead of the approaching cdfnt, have trended aoa the warmer guidance thru Mon. Behind this fnt, a much cooler airmass will move into the region. With the cold airmass in place and the upper trof digging into the region, mention of SHRA may need to be added for Wed afternoon. Otherwise, have trended aob the cooler guidance thru the remainder of the forecast period.
Steady high pressure will remain in control of the weather pattern for the next several days, leaving warm and dry conditions.
An enlongated area of ascent and vorticity with this trough has supported the development of some isolated showers along and north of Interstate 30.
329 PM CDT Sat Sep 2 2017 As of 19z Saturday afternoon upper level ridge axis was positioned across northern Nevada, placing the central Plains in northwesterly flow. At the surface, a weak cold front has pushed into northern KS. Behind the weak front, high pressure will descend across the area. Dew points in the low to mid 60s will contribute to heat index values in the mid to upper 90s as well.
337 PM EDT Sat Sep 2 2017 Weakening low pressure will lift northeast through Ohio this evening, providing lingering showers. High pressure will build in for Sunday offering dry weather and warmer temperatures.
215 PM MDT Sat Sep 2 2017 Large upper ridge covers the western CONUS, with dry and warm conditions across the Northern Plains. Even warmer conditions expected on Sunday with thermal ridge passing overhead. Very dry and breezy conditions will develop as a dry cold front crosses the region with widespread Red Flag conditions expected (see Fire Weather discussion below).
251 PM CDT Sat Sep 2 2017 An upper level short wave trough axis currently overhead will quickly exit the region later this afternoon which will leave the area within an area subsidence behind the short wave. A ridge will be covering the western CONUS with a long wave trough over the eastern CONUS.
Upper high pressure has built in over Colorado, really putting a damper on convection so far and also helping to transport smoke from the numerous northwestern fires down our way.
An approaching northern stream upper trough, branching south from a Hudson Bay low, will absorb the remains of Harvey tonight, placing eastern Kentucky in a dry northwesterly flow regime. Surface ridging building into the Lake Cumberland region out of the Tennessee Valley will gradually clear skies out through the night, potentially allowing for some patchy fog to develop across portions of the Cumberland Valley as temperatures cool into the low-mid 50s. Return flow will become somewhat more prominent Sunday night ahead of the southward propagating Hudson Bay low and southward extending troughing.
Big forecast concern for the rest of Labor Day weekend is a strong and dry cold front pushing across the region Sunday afternoon. Cooler temperatures arrive overnight as another front drops into the region after midnight. Dont let the cooler temperatures fool you. offsetting the helpful effect of cooler temperatures.
Exception could be a few discrete cells could form along the trough which will be located roughly from Brunswick to Cross City and some weak convection moving toward southwest zones from the Gulf of Mexico. weak sfc front/trough will dip south into northeast FL and drier air filters in over northern zones. Thermal trough will form inland near the I- 75 corridor and sea west and east coast sea breezes will push inland and help trigger mainly scattered showers and storms in the afternoon hours.
1134 AM MDT Sat Sep 2 2017 Upper ridge begins to build back eastward across Colorado today and tonight, leading to warmer and drier conditions across the region. Max temps today will begin to creep upward as heights build, and many locations will end up 2-4f warmer than yesterday. Upper ridge remains centered over the Great Basin with northerly flow aloft over the region.
254 PM CDT Sat Sep 2 2017 An upper level trough over the region along with a cold front has aided in producing scattered thunderstorms this afternoon, some strong. A strong cold front and low pressure system will move southeast toward northern Minnesota on Sunday reaching northwest Minnesota during the afternoon. It will also be warmer with highs ranging from 75 to 80 over eastern areas. Gusty southwest winds will occur and keep parts of the Arrowhead cooler.
The high resolution models are consistent in depicting the bulk of showers/tstms to be west to northwest of this forecast area by around midnight tonight.
348 PM CDT Sat Sep 2 2017 A secondary short wave associated with Hudson Bay upper low is now affecting northeast MN into northwest WI, while clouds have cleared the remainder of our area. The cold front is bringing in drier air, with dew points in northwest Minnesota in the upper 40s, and even lower dew points farther west and north. Dry high pressure will continue trekking to our south and the next low/front do not move in until Sunday evening. Dew points could easily be lower than projected, and max temps may need to go higher with some downslope flow off the Buffalo Ridge.
SHORT TERM (Tonight through Sunday night): Largely amplified patter across the US, with ridge across the Rockies and trough associated with the remnants of Harvey moving into the NE US. Surface features focus on the moisture trapped in the lowest 10000 feet or so, beginning to bubble up along the seabreeze.
slowly bringing in drier and cooler air. high pressure and cooler weather will remain through the rest of the day.
Should see what is falling lighten up through the afternoon as deep layer lift weakens behind the departing low pressure system. The remnant low pressure system left by Harvey was located near Frankfort early this morning, and was still causing light precip in the region. The low is forecast to weaken as it moves northeast and becomes absorbed by the westerlies today, merging with a an upper level trough over the Great Lakes. Have used a compromise with at least likely POP area wide, and the highest values in the morning. It may come down to whether the pressure gradient is strong enough to mix out the low level moisture as drier air aloft moves in tonight.
351 PM EDT Sat Sep 2 2017 A weak cold front will be near the coast tonight.
There is plenty of forcing and moisture to warrant likely pops especially in the higher terrain. This same low- level ESE flow has kept low clouds and drizzle fairly pervasive in the ridges through the afternoon. The low level center of Harvey will be continuing to weaken as it moves northeastward from its current location back toward central Kentucky toward our CWA. Drier air will start to move into Ohio by morning as high pressure and northwesterly flow will follow said wave. Fries Layer moisture is set to decrease markedly during the day on Sunday with further decreases likely into Labor Day as high pressure moves toward the central Appalachians.
Hot, dry, smoky weather through and beyond Labor Day as upper high shifts from directly overhead into Utah.
although it seems to have the low/Cindy a bit too far North. However as the low/Cindy moves to the Northeast. After Cindy moves out of the area this evening and a cold front shifts through the area tonight there does not appear to be any enhanced chance of rain for the next 7 days.
759 AM EDT Fri Jun 23 2017 Aviation A cold front will push south through the area this morning bringing rounds of showers and thunderstorms. Cooler and less humid air will filter in behind the front this evening and tonight.
Strong low-level jet will remain across the region and intensify late today as the remains of Cindy move across the lower Ohio/Tennessee Valleys. The strong south/southwest jet (50-60kts) and circulation around low pressure will produce a high shear environment. Chattanooga Airport, TN 85 73 83 63 / 80 80 50 10 Knoxville McGhee Tyson Airport, TN 85 70 81 61 / 70 90 40 10 Oak Ridge, TN 84 71 82 60 / 80 90 40 10 Tri Cities Airport, TN 84 69 80 59 / 50 90 30 10 TN.
928 AM PDT Fri Jun 23 2017 Strong high pressure will continue to bring hot weather to the Southern California interior while the marine layer will dominate near the coast. Temps today will be similar to yesterday, but a couple degrees warmer in the deserts as the ridge becomes a little better oriented with a slight westward shift, and very similar temps elsewhere compared to yesterday. Weak mid level moist S flow around the high will bring some thin moisture into Southern California through today with a few Cu buildups likely over the mountains but not enough of the prime ingredients to generate showers or storms. For this weekend the ridge strengthens a bit and will bring a warmup for well inland, mountain, and desert locations.
A ridge of high pressure is building off the west coast and will be slowly shifting eastward over the weekend. The thermal trough will be positioned over western Oregon placing the forecast area under a light offshore wind pattern which generally means north to east winds. An upper ridge, with an axis roughly along 130W longitude, will gradually shift east through this period.
824 AM EDT Fri Jun 23 2017 Hydro A cold front will push south through the area this morning bringing rounds of showers and thunderstorms. Cooler and less humid air will filter in behind the front this evening and tonight.
854 AM CDT Fri Jun 23 2017 Continued breezy today with scattered late afternoon and evening showers across the north central and east as a weak trough of low pressure moves through from Manitoba/Saskatchewan. GOES 16 non-operational water vapor imagery nicely shows cutoff upper lows upstream over southwest Ontario and central Saskatchewan, both slowly drifting southward in broad cyclonic flow aloft. These features will help maintain the deep upper trough over the Great Lakes region, leaving the Northern Plains in continued cool northwest flow. Stratus deck currently in place over much of the state, including some isolated showers, will gradually erode during the day, though linger farther east closer to upper low.
The next 24 hours are going to be dominated by the large upper low over the James Bay area, producing cyclonic flow over the region. This extra cloud cover is going to keep conditions cooler today than yesterday, with highs mainly in the 60s for northern Minnesota, with lower 70s mainly for northwest Wisconsin. Lows to be warmer than this morning as well, staying in the 40s for most locations.
630 AM CDT Fri Jun 23 2017 A surface cold front was sinking southward across Kansas during the predawn hours. The front will continue to push further south with cooler/drier air overspreading the region as northwest flow aloft provides a decent push on the frontal boundary.
SHRA/TSRA are expected into the Hill Country overnight and remainder of South Central Texas Saturday as a cold front moves into our area. Upper air analysis last evening showed a weak trough over Texas. There was a cold front moving into the northern Panhandle. High pressure centered over the Gulf will continue to dominate today with hot conditions. Tonight the cold front will approach our area and Saturday it will move in.
High pressure will continue to dominate our area - producing a southeasterly flow with winds taking on a south and west component during the afternoon/evening hours as the seabreeze forms and pushes inland.
742 AM EDT Fri Jun 23 2017 Tropical Depression Cindy was over Arkansas this morning and by Saturday morning will be over Maryland with a cold front trailing into the Southern Plains.
1037 AM EDT Fri Jun 23 2017 Aviation section updated A cold front is forecast to cross Indiana today, causing widespread showers and thunderstorms. High pressure will move in from the northwest overnight.
A cold front will push into the state from the northwest this afternoon, and will trigger additional hit and miss precipitation. While Cindy is leaving, and widespread rain will end, a cold front will push into the region from the northwest by lunchtime.
GOES 16 non-operational water vapor imagery nicely shows cutoff upper lows upstream over southwest Ontario and central Saskatchewan, both slowly drifting southward in broad cyclonic flow aloft. These features will help maintain the deep upper trough over the Great Lakes region, leaving the Northern Plains in continued cool northwest flow. Stratus deck currently in place over much of the state, including some isolated showers, will gradually erode during the day, though linger farther east closer to upper low.
940 AM EDT Fri Jun 23 2017 High pressure ridge extends over the region through a deep layer. High pressure aloft will also help suppress deep convection today, with warm mid level temps of 10C-11C at 700 mb and -5C at 500 mb. Position of low level ridge axis across the central peninsula allowing a little more low level southeasterly flow across the southern sections. (previous)Atlc ridge axis will remain north of the waters roughly along 30N lat.
630 AM CDT Fri Jun 23 2017 For the 12Z TAFs: Conditions should go to MVFR for ceilings this morning as a cold front passes through the region with ample moisture in the lower levels. /Issued 511 AM CDT Fri Jun 23 2017/ Surface cold front will move across the fcst area this morning with north to northeast winds in the breezy to windy categories with higher gusts at times behind this boundary. Low level moisture will be slow to return until later this weekend due to the drier atmosphere behind the cold front.
Sfc analysis shows ridge across north central FL area with southerly flow 5-10 mph noted in area observations. Slightly warmer than normal temps this morning with lows that were in the lower to mid 70s. high pressure center was located a few hundred miles east of NE FL with a mid level trough located over MS Valley area. These temps aloft are about 3C warmer than climate values. like yesterday a warmer than average day with temps pushing into the lower to mid 90s and heat indices topping out at 100-105.
Ridging remains in place across the area with the remnants of Cindy across the Mid- South expected to interact with a southward moving cold front beginning this afternoon. Upper level ridging will build in from the east for today, providing partly cloudy skies by this afternoon with only isolated to scattered convection expected across the area (20-30% PoPs). High temperatures are expected to reach the lower 90s across most of the area, and with muggy dewpoints in the low to mid 70s still in place across the area, heat index values are expected to peak near 100 degrees this afternoon.
The GRK VWP suggests that the westerly component within the low-level jet (FL020-040) should keep the western edge of the cloud bank near Waco. A cold front has invaded northern Oklahoma and the Texas Panhandle. /Issued 359 AM CDT Fri Jun 23 2017/ The main weather stories for North and Central Texas will be the heat today and then thunderstorm chances late this afternoon through the weekend along with some cooler weather. A cold front that extended from northeastern Kansas southwest into the Texas Panhandle at 3 AM will move into the northwestern part of the forecast area late this afternoon and through all but the southeastern zones by sunrise Saturday. The summer cold front will sweep through the rest of the forecast area Saturday night.