Aikyam-Lab/Synoptic-Bench huggingface dataset:
425 PM PDT FRI JUL 8 2016 A deep low pressure system will move through the region this weekend delivering cool temperatures and rain showers. The higher QPF amounts are associated with the second weather disturbance that should appear in the Spokane area after 11 PM PDT Tonight.
917 PM PDT FRI JUL 8 2016 A deep low pressure system will move through the region this weekend delivering cool temperatures and rain showers.
additional sct convection may be focused farther SSW Saturday afternoon as a weak upper trough axis slides S into extreme NE TX/SW AR late in the day. However, additional development cannot be ruled through daybreak with increasing upper troughing beginning to work southward from the Ozarks.
Winds behind a cold front Saturday will cause dangerous swimming conditions along the southeast Lake Michigan coast Saturday. Surface based CAPEs have risen to near 3000 J/Kg over northern Indiana and lower Michigan this afternoon ahead of a cold front that was just entering into far northwest Indiana at 330 PM EDT.
Chattanooga Airport, TN 75 95 72 91 / 30 30 20 40 Knoxville McGhee Tyson Airport, TN 73 91 70 89 / 60 20 20 30 Oak Ridge, TN 72 91 69 89 / 50 20 10 30 Tri Cities Airport, TN 68 88 63 87 / 60 20 0 10.
1155 PM CDT FRI JUL 8 2016 The cold front continues to waver about from south central IL across the St. There is yet another weak upstream short wave in western IA at this time, and passage of it and continued digging of the upper trof through the Great Lakes should nudge the front southward into far southern MO and southern IL tonight.
522 PM MDT FRI JUL 8 2016 Water vapor shows upper ridge amplifying through the nrn Rockies. Upper wave will moving through the ridge may spark a few tsra across our warn zones this evening. Upper ridge axis builds into the nrn plains allow temps to soar well into the 90s most locations.
The past few mornings have seen the development of MVFR category ceilings in the moist southwesterly flow, but the flow may have a more westerly and slightly drier component tomorrow morning so it is less clear whether we will see a repeat of the lower clouds. Strong upper ridging continues to prevail across the ARKLAMISS this afternoon with partly cloudy skies prevailing. The upper ridging will begin to break down on Saturday and this will allow disturbances to move across the northern portions of the area.
1204 AM EDT SAT JUL 9 2016 Cooler and drier air will build into the region on Saturday with partly to mostly cloudy skies.
Near stationary boundary being analyzed on surface analysis from just north of Casper to Scottsbluff to Bridgeport. Dewpoints out in the Panhandle in the low 60s east of the front. Going to be warmer and drier over todays conditions.
509 PM MDT FRI JUL 8 2016 A very unstable atmosphere in place but capped somewhat by warmer air aloft and there is a large amount of dry air in place. Highs on Saturday should be a tad warmer as mixing increases and the thermal ridge ahead of the next system will be laying overhead.
/issued 406 PM CDT FRI JUL 8 2016/ Current upper level synopsis shows a ridge centered near the northern Texas panhandle and a trough over the eastern third of the country. A surface inflection of the Bermuda ridge does extend across Florida to the western Gulf of Mexico. the upper ridge to the west that extends over the CWA will begin to weaken locally and retrograde westward.
Approach of the tail end of a cold frontal system moving into the Pacific Northwest will likely lead to some enhancement of the coastal drizzle overnight into Saturday morning, and also bring a slight chance of showers north of about Pt Reyes.
Synoptic pattern and observations: Low pressure and a cold front is crossing nrn Michigan with the line of strong and severe storms set to exit NE lower by 5pm. Falling freezing levels and the arrival of the mid level speed max with a potent upper low over Lake Superior led to many reports of large hail and damaging winds. Synoptic pattern evolution: The upper low passes through eastern upper this evening while opening up, before making it past the eastern Great Lakes Saturday afternoon. Maybe some isolated light showers lingering through the overnight hours across NW lower, while a better chances for periodic light rains reside in residual low level troughing from eastern upper through NE lower.
Scattered showers and storms along cold front into lake Erie will begin to cross region after 04Z, and then be scattered toward daybreak. The mean mid-level trough axis will be swinging east of the area on Saturday night with a drier column infiltrating the area progressively from west to east. Northwest flow will become established behind it with cooler and drier air coming into the CWA for the remainder of the weekend.
expect another MCS to develop over Southwest Missouri near the vicinity of a weak cold front during the early morning hours.
An upper trough will track east across the Panhandles this evening and then track east into Oklahoma later tonight and Saturday. The remnants of the surface boundary along with another upper trough approaching from the west will allow for the development of scattered convection once again Saturday afternoon. This will bring fairly quiet weather for the morning and early afternoon hours before the ridge lifts to the northeast in response to a closed low moving over Idaho.
Showers and thunderstorms will increase as a pacific low pressure trough moving inland in the pacific northwest moves east towards western Wyoming. temperatures will be warmer most areas saturday afternoon.
1058 PM EDT FRI JUL 8 2016 Low pressure over the northern Great Lakes will continue east tonight. A cold front trailing the low will move across the local area tonight. A secondary cold front will follow on Saturday.
747 PM EDT FRI JUL 8 2016 Low pressure over the northern Great Lakes will continue east tonight. A cold front trailing the low will move across the local area tonight. A secondary cold front will follow on Saturday.
The core of the large mid level low pressure will continue to push off to the east this evening. We're seeing some nice cool air advection in its wake as a trailing trof axis drops southeast across the area overnight. Overall, a quiet and cooler night ahead. A mid level trough axis dropping southeast across the area will be providing cool air advection that will bring some lowering of the cigs very late tonight or just after sunrise on Saturday.
1159 PM CDT FRI JUL 8 2016 A surface cold front has settled just south of the Interstate 70 corridor this afternoon, with dry air moving into the area north of the boundary with dewpoints in the 60s. The weekend ahead looks quiet overall as the region finds itself underneath the center of an upper ridge building into the central CONUS.
845 PM EDT Fri Jul 8 2016 A weak disturbance will continue to cross the region this afternoon, followed by a cold front on Saturday.
922 PM CDT FRI JUL 8 2016 Will leave in slight chances of showers/storms out west tonight as a weak upper level trough moves into the region. The 500MB ridge centered over far eastern MT/WY this afternoon will move directly overhead by 12-15Z Saturday. Highs on Saturday will be 5-8F warmer than today, topping out in the the 80s east of the MO River Valley, and in the low to mid 90s elsewhere. An area of low pressure will move through the Northern Plains over the weekend. A strong ridge aloft will also be in place. Shear and general instability will be sufficient on Saturday night to generate showers and thunderstorms ahead of the low.
Storms may organize into one or more lines across southern Oklahoma and north Texas in the next several hours as the low level jet increases. Along those lines, there appears to be a east-west boundary in West Central OK with visible satellite showing the clouds bubbling from there into southwest OK where the lower amount of clouds has allowed more heating to occur today. A third way for storms to affect the area will be with activity developing in the High Plains then moving into the fa later tonight into Saturday morning.
/Issued 252 PM EST Wed Nov 18 2020/ An upper-level ridge and associated subsidence will remain in place across much of the U.
246 PM MST Wed Nov 18 2020 An upper trough moving east into the Pacific Northwest this afternoon will send a disturbance across northern Montana tonight. Conditions look to be just right for the precip to fall as Freezing rain, mainly from central Philips and Valley counties southeast to Richland county late tonight into Thursday morning. A cold front now moving southeast through southern Saskatchewan may be the key player in this. TFJ A Freezing Rain threat will move in late tonight affecting airports along and north of a line from Malta to Sidney. WIND: Winds will be light and variable tonight until a cold front turns the winds to the west Thursday morning.
/Tonight through Wednesday/ Thermal ridging building to the west has served to tighten the pressure gradient across the state and resulted in gusty south winds into the area. The combination of warmer temperatures and gusty winds has given the area elevated fire weather concerns as dew points have remained in the 30s with resultant relative humidity in the 30 to 40 percent range. Thursday will be another warm day as the ridge axis passes across the area, with most area topping out in the 60s and even low 70s in southern Iowa. With the passage of the ridge axis winds will not be as strong as was seen today, but will still remain breezy with gusts around 20 to 25 possible.
Generally went with a persistence forecast, apart from yesterdays breezy winds, with temperatures expected to be just a degree or two cooler today compared to yesterday.
Another cold front will make its way through the Northern Rockies later this afternoon and through the evening. The higher terrain and mountain passes, especially along the Montana/Idaho border, should receive several inches of new snow with this front. A winter weather advisory has been issued for the higher areas with the biggest impacts tonight into morning hours.
309 PM CST Wed Nov 18 2020 Continental high pressure remains firmly planted over the Midwest States and extending across the entire northern gulf. This will cause the center of the high pressure area to shunt into the Atlantic with low level air mass moderation taking place across the Gulf States.
319 PM CST Wed Nov 18 2020 Weak ridging will begin to break down this evening and continue to bring a warm southwest flow pattern through this evening. As this band lingers it could transition rain over to freezing rain for many areas by early Thursday morning. Precip still looks to start out as freezing Rain then transition to a brief period of snow with some sleet in between. Given timing of freezing rain that may impact the morning commute, and some areas could see up to 0. Temperatures on Thursday look to be cooler, with 30s in the north and 40s to low 50s south.
415 PM CST Wed Nov 18 2020 Lee troughing across the High Plains has helped develop a strong pressure gradient across the area, with a 14 mb difference between eastern and western Kansas. The highest gusts so today have generally been 40-50 mph at most sites, with 53 and 52 mph reports at Topeka Forbes and Emporia respectively. The gusty winds along with some high clouds will keep the boundary layer somewhat mixed, with temperatures only cooling into the low/mid 50s. During the day tomorrow, SW winds will increase again ahead of an approaching cold front, particularly across east-central Kansas where the pressure gradient will be the strongest.
1000 PM EST Wed Nov 18 2020 Strong high pressure along the eastern seaboard combined with lower pressures over the Caribbean will produce windy conditions overnight along the coast, 20 mph with gusts around 30 mph. Cooler over the interior but not as cool as this morning with lows in the lower 60s I 4 corridor and mid to upper 50s in Lake/NW Volusia counties. Tight NE pressure gradient around strong high pressure over the mid Atlc states will remain in place tonight, veering slightly out of the E/NE Thu.
A large scale trough remains over the west coast today with a strong 130kt jet over the Sierra which will continue to bring breezy winds and rain/snow showers to the region, with a few lightning strikes possible near the Sierra crest today.
An increase in boundary layer and surface moisture will occur tonight into Thursday ahead of the surface trof which moves into central Kansas. It will remain unseasonably warm Thursday area-wide with strong and gusty southwest winds ahead of the trof across southeast Kansas where a Wind Advisory will be posted. Drier air and lighter winds are expected behind the trof across portions of central Kansas.
High pressure to our east has continued to give us sunny skies and dry weather.
Energy embed in the long wave trough is making its way through the far northern part of the state. Another piece of energy within the long wave trough will spin trough far northern CA tonight.
South winds are expected to remain up overnight, which should keep temperatures much warmer than the last several nights.
747 PM EST Wed Nov 18 2020 High pressure to our west will slide closer and then sag southeast into the Carolinas on Thursday.
Gusts across the highest mountains will be around 55 mph with gusts to 45 mph in the foothills. As the jet nears the area tomorrow, cooler low level air will advect across our forecast area which will decrease temperatures 5 to 10 degrees tomorrow and increase humidity. It will be hard to complain about the slightly cooler temperatures as a forecast high of 66 in Denver is still quite pleasant for November 19th.
/issued 235 PM CST Wed Nov 18 2020/ The axis of a broad upper level ridge spread across the CONUS has shifted to our east. Southerly surface flow today will veer to the southwest tomorrow, helping lift temperatures across the region into the low 80s by tomorrow afternoon.
Tranquil weather continues across the Tennessee Valley region this afternoon, with strong subsidence from a high pressure ridge promoting a clear sky once again. After a very chilly start, (with many locations dipping below the freezing mark), winds have veered to the SE and helped to warm us into the lower 60s as of 20z. However, a light southerly flow should help to keep temperatures 5-10 degrees warmer tonight, with lows in the mid to upper 30s being common. High pressure centered over the Ohio Valley will shift east into the central and southern Appalachians including a south to southwesterly flow across the Deep South and Tennessee Valley region.
523 PM CST Wed Nov 18 2020 High pressure dominating the eastern U.
946 PM EST Wed Nov 18 2020 High pressure to our west will slide closer and then sag southeast into the Carolinas on Thursday.
Even warmer temperatures forecast for Thursday with chance for setting new record highs. Thursday's temps represent the short- term peak as cooler air builds in behind Thursday afternoon's cold front.
Despite the drying trend and decreasing cloud cover the next few days, temperatures will remain on the cooler side of things. Urban areas and the coast/bays will be warmer and in the upper 30s to mid 40s. SFO Bridge Approach.
As high pressure slides east clear skies are expected once again tonight. As the high slides east winds will become more southerly tomorrow with gusts of 20-30 kts. VFR conditions for this TAF cycle as high pressure dominates the region. As that ridge slides east tomorrow, look for winds to pick up.
High pressure will continue to dominate the forecast for the short term period leaving us with quiet weather. Temperatures will continue to be warm in the afternoons with highs in the low to mid 80s for the entire area. Onshore flow will increase moisture in the lower levels which could lead to some patchy fog development, particularly across the Coastal Plains and Victoria Crossroads.
At the surface, low pressure will be centered over south central Canada this evening, with a frontal boundary extending from it across central North Dakota to western South Dakota. Weak westerly flow develops between the exiting front and high pressure approaching from the west on Thursday, which will keep mild air over the region, as reflected by H85 temps in the +6 to +10 degree C range. Thursday night will be quiet as the CWA remains situated between low pressure to the east and high pressure to the west.
NW flow will support seasonably cooler temperature through the remainder of the day, with high pressure promoting dry conditions through tonight. Radiational cooling under a clear sky should yield overnight lows in the upper 20s to 30s across the lowlands, and in the low 20s in higher elevations.
The increase in moisture will yield overnight lows at least 10 degrees warmer than last night.
318 PM CST Wed Nov 18 2020 A Pacific cold front moving through WY this afternoon will move through wrn and ncntl Nebraska overnight tonight.
High pressure centered over the Ohio Valley will shift east into the central and southern Appalachians including a south to southwesterly flow across the Deep South and Tennessee Valley region.
638 PM EST Wed Nov 18 2020 High pressure centered overhead slides east tonight into Thursday.
326 PM CST Wed Nov 18 2020 High pressure to our east has continued to give us sunny skies and dry weather.
Meanwhile, temperatures will climb into the lower 70s for most of the region. The greatest potential for favorable fire conditions will exist along and east of the Highway 65 corridor.
No further shower activity is expected as the upper trough that produced today's shower activity will move well off to our east overnight. Less cloud cover tonight will mean early morning low temperatures tomorrow will be as much as 15 degrees cooler than this morning's mild lows. Drier air will allow temperatures to warm quickly and tomorrow's highs are expected to be on par with today's highs, or perhaps a few degrees warmer. Clear skies and a dry airmass by tomorrow night will mean even colder overnight lows, with our coldest interior valleys likely to drop into the lower 30s.
The low level moisture will continue to increase tonight, with low clouds likely blanketing the region by sunrise Thursday. The increased moisture and clouds will result in a warmer night tonight, with lows in the low 50s. At the surface, stronger low pressure developing in eastern Colorado tonight in combination with surface ridging near the Central Atlantic Coast, will cause the pressure gradient to strengthen and southerly winds to increase. Some strengthening of the 850 mb thermal ridge Thursday will result in warmer high temperatures in the mid to upper 70s.
This flow will bring an occasional short wave trough across the area.
A high pressure ridge is draped across the southeast this evening, keeping the overnight weather quiet and chilly. Prior discussion below: The region will remain under ridging aloft through the short term. /28/ Tomorrow night through Wednesday: The forecast period starts off tomorrow night with surface ridging across the Southeast States beneath weak quasi-zonal flow aloft. Temperatures will gradually moderate with afternoon highs in the low to mid 70s.
Like yesterday, exact temperatures will be dependent on the high level cloud cover. Models show this cloud cover breaking up somewhat this afternoon, so have more confidence we will actually reach the low to mid 70s this afternoon.
Large upper level trough is sliding into the PNW, as the associated cold front has pushed into Idaho and Montana. The front will stall and dissipate in the Northern Rocky Mountains over the next 36 hours, since the parent low pressure will continue north into Alberta. The presence of this trough will keep showers and mountain snow in the forecast through much of the day on Thursday. Also bumped up RH values due to lingering moisture from the earlier cold front passage. A trough will move onshore late tonight and an area of SHRA will accompany it. However, gusty west winds are expected at most sites with the trough moving across the area.
High pressure from the surface through the midlevels will remain in control of our weather tonight, and shift to our east tomorrow. Northerly winds turn southerly later today as high pressure moves to our east. SR Chattanooga Airport, TN 61 40 66 44 69 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 61 37 64 42 67 / 0 0 0 0 0 Oak Ridge, TN 61 38 64 42 67 / 0 0 0 0 0 Tri Cities Airport, TN 61 34 63 38 66 / 0 0 0 0 0.
The wind shift is due to high pressure sliding further east, putting us on the western edge of the high. RH values will range from the low to upper 20s. Tonight, clear skies continue and overnight lows slightly warmer with temps in the mid to upper 30s.
Mostly clear skies and light winds will allow overnight temps to fall into the low 40s across the ArkLaMiss region. /Tonight through Thursday night/ Nice warmer day for us with low 70s for an average. It will be a little warmer trend each morning especially climbing from 40s to 50s in the short term.
Mostly clear skies and light winds will allow overnight temps to fall into the low 40s across the ArkLaMiss region. /issued 524 PM CST Wed Nov 18 2020/ High pressure centered across the southeast to maintain southerly winds across the region through the terminal forecast period ending 20/00Z. /Tonight through Thursday night/ Nice warmer day for us with low 70s for an average. It will be a little warmer trend each morning especially climbing from 40s to 50s in the short term.
1006 PM MST Wed Nov 18 2020 Water vapor shows upper ridge over the Upper Midwest with trof moving into the western CONUS. Surface trof is moving through the central Dakotas. Gusty west winds will turn northwest on Thursday as upper wave crosses south central Canada and pushes a cold front through the Northern Plains.
1137 PM CST Wed Nov 18 2020 High pressure dominating the eastern U.
Strong cold front moved across southwest Idaho late today with showers, thunderstorms with hail up to marble size, and post-frontal northwest wind gusts up to 40-50 mph.
1223 AM EST Thu Nov 19 2020 High pressure centered overhead slides east tonight into Thursday.
343 AM EST Thu Nov 19 2020 High pressure will move offshore tonight starting a warming trend through the later half of the week. A cold frontal boundary with some showers will then move into the area by the end of the weekend. Overnight, as high pressure moves off the Mid Atlantic coastline tonight the flow will turn southerly. With the warm air advection on the backside of the high, high temperatures should rise well into the 40's across the region and even low 50's in a few spots.
Lower level ridging is aligned over the south with ample dry air above 700 mb. Short Term Update - High pressure will remain fairly steady as it gradually elongates out into the Atlantic overnight. Strong high pressure will remain over the mid Atlantic states and continue to drive strong northeasterly breezes across Keys waters through the overnight period.
Lee troughing across the High Plains has helped develop a strong pressure gradient across the area, with a 14 mb difference between eastern and western Kansas. The highest gusts so today have generally been 40-50 mph at most sites, with 53 and 52 mph reports at Topeka Forbes and Emporia respectively. The gusty winds along with some high clouds will keep the boundary layer somewhat mixed, with temperatures only cooling into the low/mid 50s. During the day tomorrow, SW winds will increase again ahead of an approaching cold front, particularly across east-central Kansas where the pressure gradient will be the strongest.
At present, however, data suggest the lower flight categories will remain south of the terminals. /issued 235 PM CST Wed Nov 18 2020/ The axis of a broad upper level ridge spread across the CONUS has shifted to our east. Southerly surface flow today will veer to the southwest tomorrow, helping lift temperatures across the region into the low 80s by tomorrow afternoon.